• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    TOGETHER TOGETHER A quick-release bracket (1) for coupling an implement (2) having two parallel mounting shafts (3, 4) to a construction machine (6) comprises a frame (7) which can be releasably coupled to said mounting shafts (3, 4) by means of two coupling means (10,11). A first (10) of the coupling means defines a first receiving space (12) for retaining the first mounting shaft (3) and a second (11) disengaging means defines a second receiving space (13) for the second mounting shaft (4), wherein in the the second receiving space (13) fully retractable mounting shaft (4) is lockable therein. For locking, a linear slidable locking bolt (14) is arranged to cooperate with a locking member (20) which is biased downwards and is linearly displaceable upwards by the second fastening shaft (4) when it is inserted into the second receiving space (13), the interaction between the locking strap the gel (14) and the locking means (20) are such that the locking means (15) enables linear extension of the locking bolt (14) only when the second fastening shaft (4) is fully inserted into the second receiving space (13). Publication image: Fig. 2
    公开号:SE1450029A1
    申请号:SE1450029
    申请日:2014-01-15
    公开日:2014-07-19
    发明作者:Kjell Bergh
    申请人:Bsm Verkst S Ab；
    IPC主号:
    专利说明:

    Prior art A quick-release fastener according to the preamble is known from the document GB 2 412 361 A. In the known quick-release bracket a pivotable hook, which is prestressed by means of a helical spring, is used for locking the second fastening shaft, and a likewise pivotable latch , which is prestressed by means of a tension spring, for releasing the prestressed hook in order to effect locking of the second fastening shaft.
    A disadvantage of the known solution is that the pivotable hook, in order to remain in the locked position even in the case of a heavy load, requires the establishment of a securing pin, which should preferably be spring-loaded behind the hook across the quick-release bracket as soon as the hook is fully swung out. Apart from all the extra measures required to set up such a safety pin, the pin still does not imply an absolute guarantee for the correct operation of the quick release. There is thus an intermediate position, which is illustrated in the document GB 2 412 361 A in Fig. 2, where the hook is not completely swung out and the securing pin is therefore not projected behind it but where the latch has already been released by the other mounting shaft. This intermediate position may very well arise, for example, if a stone or the like ends up between the hook and the mounting shaft or if the function of the moving parts is impaired for another reason, such as rust. In any case, the intermediate position is difficult to perceive by a machine operator, unless a thorough inspection is carried out on site at the quick coupler, and constitutes a major safety risk, as an incorrectly connected implement risks coming loose even at low load. The object of the invention Against this background, the object of the invention is to improve the safety of a quick-release bracket according to the preamble by providing a more secure connection between a quick-release bracket and an implement.
    SUMMARY OF THE INVENTION According to the present invention, this object is achieved in a quick-release fastening according to the preamble in that a locking bolt is arranged to slide linearly out of the frame in the direction away from the first receiving space and to close the second receiving space downwards, and by That the locking means is arranged to be displaced linearly upwards by the second fastening shaft out of engagement with the locking bolt so that extension of the locking bolt and thereby closure downwards of the second receiving space is possible.
    In other words, the prestressed locking means is in a starting position in the path of a linearly displaceable locking bolt, which is less prone to be opened under load than a pivotable hook, and releases the locking bolt only when it has been linearly pushed away upwards by the mounting shaft and this thereby assumes a correct position for coupling the implement, in which position the locking bolt can be slid out linearly under the mounting shaft more reliably than a hook can be pivoted around such.
    From the document WO 2012/125104 A1 a quick release is known, which just like the quick release according to the invention comprises a linearly extendable locking bolt. The special thing about this known quick release compared to previous solutions is that because it comprises a special indicating device, which optically indicates not that the locking bolt is retracted and the implement is uncoupled, but that the locking bolt is extended and the implement is potentially coupled. The "potential" restriction is of great importance in this context.
    Namely, with this improved quick attachment, it is possible for a machine operator to cause an error indication and thus an unsafe operating condition with a defective coupled implement through a maneuvering error. This is because the indicating device does not indicate actual locking or correct attachment of an implement but only extension of the locking bolt, regardless of whether this correctly engages under the associated mounting shaft on the implement or slides incorrectly over it. This shortcoming clearly shows that neither this known quick-release bracket can give the person skilled in the art any guidance when it comes to achieving both a robust and reliable quick-release bracket.
    According to the invention, the locking means preferably comprises a rigid element, which has a trailing edge, which is arranged to support against the frame and a leading edge, which is arranged to prevent projection thereof by abutment against a leading edge of the reading bar when the second fastening shaft is not fully inserted in the second recording space. By choosing this solution, the necessary moving parts of the locking member are relieved and forces arising from an attempt at premature ejection of the locking bolt are reliably taken up by more stable, static parts of the locking member. Said rigid element is preferably arranged vertically displaceably on a holder part of the frame, which holder part has a lower wall portion, which is arranged to offer support to the rear edge of the rigid element. Arrangement of the rigid but displaceable element on a special holder part facilitates the assembly of the element both in newly produced quick-release brackets and in the event of possible supplementation of existing quick-release brackets with a locking member.
    Preferably, said rigid element is formed as a substantially rectangular disc and said holder part is formed as a substantially parallelepipedic container, which has a downwardly directed opening, one limitation of which is said lower wall portion and in which the disc is so prestressed that it is biased by means of at least one spring inside the container projects downwards so far out of the opening in it that its leading edge prevents projection of the locking bolt.
    Quick fasteners of the type in question are used in environments where heavy soiling through excavated masses is common. From that point of view, it is of great importance that the blocking member is insensitive to such contamination, as otherwise operational disturbances may result. A container, in which more sensitive parts of the locking member are securely mounted, constitutes an extremely simple solution to this problem.
    The at least one spring is preferably a compression spring surrounding a guide pin, which is fixedly connected to the disc and slidably extends through a hole in an upper container wall, a stop, such as a skull or a pin, on the guide pin by abutment against the upper container wall downwards limits the maximum ejection of the disc from the container. This solution also helps to make the barrier means insensitive to contaminants. In addition, it is easy to achieve and extremely robust.
    In an alternative embodiment, the locking means comprises on the one hand a projection which projects at the top from a leading edge of the locking bolt in the projecting direction of the locking bolt and has a flat underside, in which a keyhole-shaped opening is formed, which has a wider portion spaced from the locking bolt. narrower portion, which slits from the wider portion extends in the direction of said leading edge, and on the one hand only vertically displaceable piston, which is biased downwards and from above extends through the opening, the piston having an upper further part, which fits further of the opening. portion, and a narrower portion adjoining the further portion 15 at the bottom, which fits the narrower portion of the opening and is terminated at the bottom by a piston end which is actuatable by said second mounting shaft when it is inserted into the second receiving space, so that , when said second mounting shaft is fully inserted into the second receiving space, the further part of the piston is displaced upwards out of the further portion of the opening and cow The mouth with its narrower part, which fits the narrower part of the opening, enables the locking bolt to be extended. The alternative embodiment presupposes that the locking bolt is provided with a projection and is therefore not as simple as the previous embodiment to adapt to existing quick fasteners. However, it can be designed very compactly and comprises few and uncomplicated parts and may therefore sometimes be preferable to the previous embodiment.
    Preferably, in the latter embodiment above the wider part, the piston has a stop, such as a ledge or a pin, which, by abutment against a top side of the projection downwards, limits the maximum projection of the piston downwards through the wider portion of the opening. Applying the stop at the specified location makes it extremely easy to limit downwards the maximum possible ejection of the piston.
    Preferably, in the latter embodiment, the piston is slidably mounted in a container on the frame, which container has a downwardly directed opening, through which the piston is extendable under the action of a compression spring, which is accommodated in the container. This solution is robust, easy to achieve and insensitive to contaminants.
    In general, the locking bolt is preferably fixedly connected to an indicating rod which, when the locking bolt is retracted, projects from the frame on a side opposite the locking bolt and which is arranged to move in the same direction into the frame when the locking bolt is displaced in its projecting direction. Indication in this way is by far the simplest, but it is understood that also indication by means of a solution corresponding to WO 2012/125104 A1 is possible or also indication by means of the vertical movement which parts of the locking member carry out between blocked and released locking bolt.
    BRIEF DESCRIPTION OF THE DRAWINGS Preferred embodiments of the invention are described in more detail below with reference to the accompanying drawings, in which: Figures 1-3 show a quick attachment in three different positions in partial section from the side; Fig. 4 shows a locking member with illustrated hidden details in two different positions from the side; Fig. 5 shows the locking means with illustrated hidden details from below; Fig. 6 shows the locking means with illustrated hidden details in an extended position in partial section from the side; and Figs. 7 and 8 show a portion of an alternative quick mount in two different positions in partial section from the side.
    DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Fig. 1 shows a quick-release bracket 1 according to a preferred embodiment of the invention in a first position while coupling an implement 2 to a construction machine 6. The construction machine is then only symbolically illustrated by means of the number 6, but the person skilled in the art realizes that the machine, for example in the case of an excavator, normally has a boom which is fixedly connected to the quick-release bracket 1 by means of connecting means 9, such as shaft holes, thereon. The tool 2 is not illustrated in its entirety either, but only an upper part of it in the form of two flange-shaped, parallel side supports 5, between which two parallel mounting shafts 3, 4 extend. As an example of commonly used tool 2 can be mentioned different types of buckets.
    The actual quick-release bracket 1 comprises a frame 7, which at the bottom has a substantially rectangular base 8, for example in the form of a strong plate. At the top of the frame 7 there are said connecting means 9, which according to the above are fixedly connected to the contracting machine 6, and below the connecting means 9 the quick attachment 1 at the base 8 has coupling means 10, 11, which can be releasably coupled to said fastening shafts 3, 4.
    Of said mounting shafts, a first 3 is intended to cooperate with a first coupling member 10 at the bottom of the quick-release bracket 1 and a second 4 is intended to cooperate with a second coupling member 11 at the bottom of the quick-release bracket 1.
    The first coupling member 10 comprises a first receiving space 12, which in the embodiment shown is designed as a horizontal U-shaped opening, which faces away from the second coupling member 11 and is adapted in size to the mounting shaft 3. The the first receiving space 12 thus enables the insertion of the first mounting shaft 3 between said side supports 5 from a short side in relation to the rectangular base 8 of the frame 7.
    The second coupling member 11 comprises a second receiving space 13, which in the embodiment shown is turned away from the first coupling member 10 and is also open downwards. The second receiving space 13 has at the top a radius which is adapted in size to the second mounting shaft 4 and is arranged to enable insertion of this from below the frame 7.
    When the first mounting shaft 3 is fully inserted into the first receiving space 12, the second mounting shaft 4 can be inserted into the second receiving space 13 (see Fig. 2) and finally bottomed therein (see Fig. 3) and locked therein by means of a locking latch. 14. This is by means of a cylinder assembly 17, which is well protected located centrally in the frame 7, for locking extendable from the frame 7 in the direction away from the first receiving space 12. In the extended position the locking bolt 14 closes the second receiving space 13 downwards and then locks together with the first receiving space 12, in which the first mounting shaft 3 is inserted, fixed the second mounting shaft 4 in the second receiving space 13 and thus the implement 2 on the quick-release bracket 1.
    So far, the described quick bracket 1 corresponds to many known solutions, but according to the invention it comprises an additional, safety-promoting detail. This consists of a locking member 20, which is arranged to cooperate with said locking bolt 14 and to prevent it from being pushed out before the second fastening shaft 4 as above has bottomed out in the second receiving space.
    In the preferred embodiment, illustrated in Figs. 1-3 together with the quick-release bracket 1 and in Figs. 4-6 separately, the locking member 20 comprises a substantially parallelepipedic container 24, which is made of coarse sheet metal and is welded to the frame 7 above the second receiving space 13. The container 24 has a downwardly directed opening 26, in which a substantially rectangular disc 21 is inserted with a sliding fit. The disc 21 is also of coarse sheet metal and is by means of two compression springs 27, which are clamped inside the container 24 between the disc 21 and an upper container wall 30, biased downwards in the direction out of the container 24. The surface 21 of the disc 21 inside the container 24 and its maximum projection out of it is controlled by means of two guide pins 28. Each of these is surrounded by one of said compression springs 27 and extends movably through a hole 29 in the upper container wall 30. At the bottom they are rigidly connected to the disc. 21 and at the top, they each have their own head 31, which is intended to limit the maximum projection of the disc 21 from the container 24 downwards by abutment against the upper container wall 30.
    In its maximum extended position, the disc 21 extends out of the container 24 and into the second receiving space 13. The disc 21 then projects so far out of the opening 26 that only a small portion of a trailing edge 22 (to the left of the drawings) of the disc 21 ends up opposite a lower wall portion 25 of the container 24 while a larger part of said trailing edge 22 projects below this wall portion 25. At maximally projecting disc 21, an opposite leading edge 23 (to the right of the drawings) of the disc 21 projects out of the opening 26 on correspondingly and then ends up opposite a leading edge 15 on the locking latch 14 (see Figs. 1 and 2).
    Ejection thereof by means of the cylinder assembly 17 is thereby prevented, said lower wall portion 25 of the container 24 being suitably used as support for said trailing edge 22 on the disc 21 in order to reduce the load on the guide pins 28 when the leading edge 15 of the locking bar 14 presses against the leading edge 23 on the disc 21 .
    When the second mounting shaft 4 of the tool 2 is inserted completely into the second receiving space 13, i.e. bottoms therein, the disc 21 is pushed into the container 24 so far that the leading edge 15 of the locking bar 14 goes free from the leading edge 23 of the disc 21 and the locking bolt 14 can pass under the disc 21 for locking the second mounting shaft 4.
    Improper activation of the locking bolt 14 and associated security risks is thus effectively prevented by the quick release 1 according to the invention.
    Figs. 7-8 show another preferred embodiment of the quick-release bracket 1 according to the invention, wherein reference numerals corresponding to previously corresponding parts have been chosen for previously corresponding parts and these parts are not described again. The difference from the previously described embodiment thus consists only in the design of the locking member 40.
    The locking member 40 comprises a projection 41 which, in the projecting direction of the locking bolt 14 at the top, projects from a leading edge 15 of this bolt. The committee 10 15 20 25 30 41 has a flat underside 42, in which a keyhole-shaped opening 43 is formed. The opening 43 has a wider portion 44 at a distance from the leading edge 15 of the locking bolt 14 and a narrower portion 45, which slot-shaped from the wider portion 44 extends in the direction of this leading edge 15.
    The locking means 40 further comprises a only vertically displaceable piston 46, which is slidably mounted in a container 52 on the frame 7. The container 52 has a downwardly directed opening 53, through which the piston 46 is extendable under the action of a compression spring 54, which is accommodated in the container. 52. The piston 46 has an upper further part 47, which fits the further portion 44 of the opening 43, and above the further part 47 a ledge 50, which by abutment against a top 51 of the projection 41 downwards limits the maximum projection of the piston 46 downwards through the opening 43 further portion 44 (see Fig. 7). Finally, the piston 46 has a narrower part 48 adjoining the further part 47 at the bottom, which fits the narrower portion 45 of the opening 43 and is terminated at the bottom by a piston end 49.
    Said piston end 49, like the disc 21 in the previous embodiment, can be actuated by the second mounting shaft 4 of the tool 2 when it is inserted into the second receiving space 13, so that, when said second mounting shaft 4 is fully inserted into the second receiving space 13, this (see Fig. 8), the further part 47 of the piston 46 is displaced upwards out of the further portion 44 of the opening 43 and the piston 46 with its narrower part 48, which fits the narrower portion 45 of the opening 43, enables the locking bolt 14 to be extended. the embodiment of the quick-release bracket 1 according to the invention thus effectively prevents incorrect activation of the locking bolt 14 and associated safety risks.
    As a further measure for improving the safety, it is also possible at the quick-release bracket 1 according to the invention to set up means for indicating locking of the implement 2. The easiest way to provide such an indication, as shown in Figs. 1-3 and 7-8, is to provide an indicating rod. 16 is fixedly connected to a trailing edge of the locking bar 14, the indicating rod 16 when the locking bar 14 is retracted being maximally projecting from the frame 7 on one side opposite the locking bar 14 and when the locking bar 14 is extended is fully retracted into the frame 7.
    Those skilled in the art will appreciate that the two embodiments described above can be varied within the scope of the appended claims, for example for adaptation to different types of quick fasteners present.
    权利要求:
    Claims (9)
    [1]
    Quick attachment (1) for coupling an implement (2), having two parallel attachment shafts (3, 4), which are arranged across the side supports (5) of the implement (2), to a contracting machine (6) , which quick-release bracket (1) comprises a frame (7), which has a substantially rectangular base (8) and by means of connecting means (9), which are arranged at the top of the frame (7), is mechanically connectable to said contracting machine ( 6), and by means of coupling means (10, 11), which are arranged at the bottom of the frame (7), can be releasably coupled to said mounting shafts (3, 4), a first (10) of the coupling means defining a first receiving space (12) for a first (3) of said mounting shafts and a second (11) of the coupling means defines a second receiving space (13) for a second (4) of said mounting shafts, the first receiving space (12) being arranged to enable insertion of the the first mounting shaft (3) between said side support (5) from a short side in relation to the rectangular base (8) of the frame (7) and the the second receiving space (13), when the first mounting shaft (3) is fully inserted into the first receiving space (12), is arranged to enable insertion of the second mounting shaft (4) from below the frame (7), one in the second receiving space (13) inserted second mounting shaft (4) is lockable therein only when the second mounting shaft (4) is fully inserted into the second receiving space (13) and has displaced a downwardly biased locking member (20; 40) upwards, characterized in that a locking bolt (14) is arranged to slide linearly out of the frame (7) in the direction away from the first receiving space (12) for locking and to close the second receiving space (13) in the extended position downwards , and that the locking means (20; 40) is arranged to be displaced linearly upwards by the second fastening shaft (4) out of engagement with the locking bolt (14) so that projection of the locking bolt (14) and thereby closure downwards of the second receiving space ( 13) is made possible.
    [2]
    A quick bracket (1) according to claim 1, wherein the locking member (20) comprises a rigid element (21) having a trailing edge (22) arranged to support against the frame (7) and a leading edge (23), which is arranged to, by abutment against a leading edge (15) of the locking latch (14), prevent it from being ejected when the second mounting shaft (4) is not fully inserted into the second receiving space (13). 10 15 20 25 30 11
    [3]
    A quick bracket (1) according to claim 2, wherein said rigid element (21) is vertically displaceably arranged on a holder part (24) of the frame (7), which holder part (24) has a lower wall portion (25), which is arranged to offer support to the trailing edge (22) of the rigid element (21).
    [4]
    A quick mount (1) according to claim 3, wherein said rigid member is formed as a substantially rectangular disc (21) and said holder portion is formed as a substantially parallelepipedic container (24) having a downwardly facing opening (26), one of which limitation consists of said lower wall portion (25) and in which the disc (21) is so inserted that it is biased by means of at least one spring (27) inside the container (24) downwards so far out of the opening (26) therein that its leading edge (23) prevents the locking bolt from being extended (14).
    [5]
    A quick mount (1) according to claim 4, wherein said at least one spring is a compression spring (27) surrounding a guide pin (28) which is fixedly connected to the disc (21) and slidably extends through a hole (29) in an upper container wall (30), wherein a stop (31), such as a skull or a pin, on the guide pin (28) by abutment against the upper container wall (30) downwards limits the maximum projection of the disc (21) out of the container (24). ).
    [6]
    A quick-release bracket (1) according to claim 1, wherein the locking member (40) comprises on the one hand a projection (41) which projects from the front edge (15) of the locking bolt (14) in the direction of extension of the locking bolt (14) and has a flat underside (42), in which a keyhole-shaped opening (43) is formed, which has a wider portion (44) spaced from the leading edge (15) of the locking bar (14) and a narrower portion (45) which is slit-shaped from the wider portion (44). ) extends in the direction of said leading edge (15), and on the one hand only a vertically displaceable piston (46), which is biased downwards and from above extends through the opening (43), the piston (46) having an upper further part ( 47), which fits the further portion (44) of the opening (43), and a narrower portion (48) adjoining the further part (47) at the bottom, which fits the narrower portion (45) of the opening (43) and is terminated at the bottom by a piston end ( 49), which can be actuated by said second mounting shaft (4) when it is inserted into the second receiving space (13), so that, when said second a mounting shaft (4) is fully inserted into the second receiving space (13), the further part (47) of the piston (46) is displaced upwards out of the further portion (44) of the opening (43) and the piston (46) with its narrower part (48 ), which fits the narrower portion (45) of the opening (43), enables the locking bolt (14) to be extended.
    [7]
    A quick mount (1) according to claim 6, wherein the piston (46) above the wider part (47) has a stop (50), such as a ledge or a pin, which by abutment against an upper side (51) of the projection (41) downwards limits the maximum downward projection of the piston (46) through the further portion (44) of the opening (43).
    [8]
    A quick mount (1) according to claim 7, wherein the piston (46) is slidably mounted in a container (52) on the frame (7), said container (52) having a downward opening (53) through which the piston (46) is extendable under the action of a compression spring (54) housed in the container (52).
    [9]
    Quick fastener (1) according to one of the preceding claims, in which the locking bolt (14) is fixedly connected to an indicating rod (16) which, when the locking bolt (14) is retracted, projects from the frame (7) on a side opposite the locking bolt ( 14) and which is arranged that when the locking bolt (14) is displaced in its direction of extension, it is moved in the same direction into the frame (7).
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1350056|2013-01-18|
    SE1450029A|SE539641C2|2013-01-18|2014-01-15|Quick attachment for connecting a tool to a construction machine|SE1450029A| SE539641C2|2013-01-18|2014-01-15|Quick attachment for connecting a tool to a construction machine|
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