Bracket limit structure and loader assembly

Abstract

Embodiments of the present invention provide a support limiting structure and a loader assembly. Among them, the support limiting structure includes: a support member; a limiting assembly provided on at least one side of the support member, and the limiting assembly includes: a limiting main board, on one side of the limiting main board close to the support member, there are a connecting seat and a limiting member; a pressing plate arranged corresponding to the support member, one end of the pressing plate is rotatably connected to the connecting seat through a connecting member, and the limiting member can limit the movement position of the other end of the pressing plate. The connecting member is connected from one side of the support member to the limiting main board through the connecting seat and the pressing plate. Through the technical solution of the present invention, when the staff installs and disassembles the pressing plate, it is only necessary to insert the connecting member from one side of the support member towards the direction of the limiting main board. Furthermore, when the loader passes through the hydraulic support, the gap between the loader and the hydraulic support is greatly reduced, and the smoothness of the loader during travel is higher.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of transfer machines, and more specifically, to a support limiting structure and a transfer machine assembly. Background Art

[0002] Coal mining usually requires the use of hydraulic support equipment. During the operation, the transfer machine travels through the hydraulic support. The hydraulic support includes columns and a base. The columns mainly play a supporting role. During operation, it is necessary to limit the position between the columns and the base to prevent the columns from detaching from the base and causing danger. Usually, when limiting the position of the columns, the transfer machine extends deep into the left and right ends respectively. This requires reserving an installation space within the space where the transfer machine is located, which will increase the movement range of the transfer machine from left to right. As a result, the position of the transfer machine may shift or swing during operation, affecting the normal operation of the transfer machine or even causing damage. Summary of the Invention

[0003] To solve at least one of the above technical problems, an object of an embodiment of the present invention is to provide a support limiting structure.

[0004] Another object of the embodiment of the present invention is to provide a transfer machine assembly having the above support limiting structure.

[0005] To achieve the above object, an embodiment of the first aspect of the present invention provides a support limiting structure, including: a support member; a limiting assembly provided on at least one side of the support member. The limiting assembly includes: a limiting main board, on one side of the limiting main board close to the support member, there are provided a connecting seat and a limiting member; a pressing plate corresponding to the support member, one end of the pressing plate is rotatably connected to the connecting seat through a connecting member, and the limiting member can limit the movement position of the other end of the pressing plate, wherein the connecting member is connected from one side of the support member through the connecting seat and the pressing plate to the limiting main board.

[0006] According to the bracket limiting structure provided by the present invention, it includes a support member and a limiting assembly. The limiting assembly can be arranged on one side of the support member or on both sides of the support member. The limiting assembly can limit the support member, and the staff can flexibly set the position of the limiting assembly according to the actual situation to prevent the support member from detaching. Specifically, the limiting assembly includes a limiting main board and a pressing plate. A connecting seat and a limiting member are also provided on the limiting main board, and both are arranged on the side of the limiting main board close to the support member. One end of the pressing plate is rotatably connected to the connecting seat through a connecting member, so that the connecting member can be used as the rotation axis of the pressing plate, that is, the pressing plate can rotate around the connecting member. In addition, the limiting member can limit the moving position of the other end of the pressing plate. Therefore, the pressing plate has a limited moving range, that is, the rotation angle of the pressing plate is limited, so as to effectively limit the support member. During operation, the transfer machine needs to travel through the hydraulic support. During the traveling process, the support member may move vertically. Among them, the pressing plate is arranged at a position corresponding to the support member, that is, the pressing plate can be arranged above the support member or at other positions that can limit the up and down movement of the support member. Generally, it is arranged above the support member. Thus, when the support member moves upward, it will generate an upward pressure on the pressing plate. At this time, the pressing plate will be forced to rotate slightly around the connecting member until the other end of the pressing plate abuts against the limiting member, and the pressing plate will no longer continue to rotate upward. Instead, under the action of the interaction force, it will exert a downward pressure on the support member to limit the range of the support member's vertical jitter. Furthermore, the pressing plate can limit the movement range of the support member.

[0007] It should be particularly noted that the connecting seat and the limiting member are arranged on the side of the limiting main board close to the support member. Since the pressing plate is located in the gap between the fitting part and the limiting main board, the pressing plate is also located on the side of the limiting main board close to the support member. When the staff installs and disassembles the pressing plate and the connecting member, only need to insert the connecting member from one side of the support member to the side of the limiting main board, which greatly reduces the gap between the transfer machine and the hydraulic support, and the transfer machine has higher stability during traveling.

[0008] In addition, the above technical solution provided by the present invention may also have the following additional technical features:

[0009] In the above technical solution, the connecting seat specifically includes: a connecting part, which is fixedly connected to the limiting main board; a fitting part, which is connected to the end of the connecting part away from the limiting main board, and the fitting part extends upward from the connecting part. A first connection hole is provided on the fitting part. Among them, there is a gap between the fitting part and the limiting main board, the pressing plate is arranged in the gap, and a second connection hole is provided on the pressing plate. The connecting member is connected to the limiting main board through the first connection hole and the second connection hole.

[0010] In this technical solution, the connecting seat includes a connecting portion and a mating portion. One end of the connecting portion is fixedly connected to the limiting main board, and the other end is connected to the mating portion. The mating portion extends upward from the connecting portion. Therefore, there is a certain gap between the mating portion and the limiting main board, and they do not come into direct contact. On the one hand, it provides space for the installation of the pressing plate. On the other hand, it can also limit the displacement of the pressing plate along the extension direction of the connecting member through the limiting main board and the mating portion. Further, a first connection hole is provided on the mating portion, and a second connection hole is provided on the pressing plate. The connecting member can sequentially pass through the first connection hole and the second connection hole to be connected to the limiting main board. The pressing plate is located in the gap between the mating portion and the limiting main board. Therefore, when the staff installs and disassembles the pressing plate, they can operate the connecting member on the side of the limiting main board close to the support member to make it pass through the first connection hole and the second connection hole in sequence, without operating on the side of the limiting main board far from the support member, which is convenient for operation when the loader passes through the hydraulic support.

[0011] Among them, the mating portion and the connecting portion can be integrally formed or fixedly connected to each other.

[0012] In the above technical solution, a chamfer is provided at the end of the connecting portion connected to the limiting main board, and the chamfer is provided on the side of the connecting portion away from the gap.

[0013] In this technical solution, by providing a chamfer on the connecting portion, when the staff fixes the connecting seat, they can more quickly identify the connecting portion and the mating portion, which can avoid installation mistakes to a certain extent, improve work efficiency, and save material costs. In addition, since the chamfer is provided at the end of the connecting portion connected to the limiting main board and is set away from the gap, when the pressing plate penetrates into the gap, the connecting portion and the limiting main board can be welded at the edge of the chamfer to increase the connection strength and reduce the possibility of the pressing plate coming off due to severe vibration during movement.

[0014] In the above technical solution, the bracket limiting structure further includes a reinforcing rib, which is provided on the side of the limiting main board close to the support member. The reinforcing rib is provided below the connecting portion and abuts against the connecting portion.

[0015] In this technical solution, the reinforcing rib is provided on the side of the limiting main board close to the support member, which can avoid interfering with the working process of the loader when it passes through the hydraulic support. In addition, because the reinforcing rib is provided below the connecting portion and abuts against the connecting portion, the connecting portion can enhance the connection strength with the limiting main board through the reinforcing rib.

[0016] In the above technical solution, the projection of the connecting member on the limiting main board does not coincide with the projection of the support member on the limiting main board.

[0017] In this technical solution, the projection of the connecting member on the limiting main board does not coincide with the projection of the supporting member on the limiting main board. When installing or disassembling the connecting member, the supporting member will not interfere with the disassembly and assembly process, so as to improve the disassembly efficiency.

[0018] In the above technical solution, a first supporting and mating portion is provided on the supporting member, and a second supporting and mating portion is provided on the side of the pressing plate away from the limiting member. The pressing plate can move between a first working position and a second working position relative to the supporting member. Among them, the first working position is where the first supporting and mating portion abuts against the second supporting and mating portion, and the second working position is where the other end of the pressing plate abuts against the limiting member.

[0019] In this technical solution, the first supporting and mating portion is arranged on the supporting member, and the second supporting and mating portion is arranged on the pressing plate. Since the pressing plate can rotate around the connecting member and the pressing plate has a limited rotation range, the two limit positions that can limit the rotation range are respectively the first working position and the second working position. Specifically, the two limit positions are respectively the first working position where the first supporting and mating portion of the supporting member abuts against the second supporting and mating portion of the pressing plate, and the second working position where the other end of the pressing plate abuts against the limiting member. The pressing plate has a limited movement range, so the movement range of the supporting member is also limited.

[0020] Furthermore, when the supporting member moves up and down, due to the self-weight of the pressing plate, it will always abut against the supporting member. That is, during the process of converting from the first working position to the second working position, the pressing plate and the supporting member always remain in contact. During the process of converting from the second working position to the first working position, due to the speed difference, the supporting member may fall first, and there is a certain gap between the supporting member and the pressing plate. However, when the supporting member falls to the lowest point, the pressing plate can then fall onto the supporting member to be in the first working position. Specifically, when the supporting member moves upward from the first working position, the supporting member drives the pressing plate to move upward together. At this time, the pressing plate will rotate around the connecting member. When the other end of the pressing plate abuts against the limiting member, it will limit the further upward movement of the pressing plate and the supporting member to achieve the limiting effect.

[0021] In the above technical solution, the connecting member includes: a pin shaft body and a stop portion formed at one end of the pin shaft body. Among them, the maximum diameter of the stop portion is greater than the maximum diameter of the pin shaft body.

[0022] In this technical solution, a stop portion is arranged at one end of the pin shaft body, and the maximum diameter of the stop portion is greater than the maximum diameter of the pin shaft body. Therefore, when the staff inserts the end of the pin shaft body away from the stop portion from the first connection hole into the second connection hole, it can avoid excessive insertion, which may cause inconvenience in disassembly, and can also prevent the pin shaft body from falling to the side of the limiting main board away from the supporting member. In addition, due to the large size of the stop portion, the staff can hold the stop portion to install and disassemble the whole connecting member, that is, the stop portion has the function of being convenient for the user to hold, and the operation is convenient.

[0023] In the above technical solution, a mating groove that is recessed inward along the radial direction of the pin shaft body is provided at one end of the pin shaft body close to the abutting portion; the bracket limiting structure further includes an axial limiting seat, which is arranged on the side of the connecting seat away from the limiting main board, and a limiting hole corresponding to the mating groove is provided on the axial limiting seat; an axial limiting member, and the axial limiting member penetrates into the axial limiting seat through the limiting hole, and the axial movement of the connecting member is restricted under the action of the axial limiting member and the mating groove.

[0024] In this technical solution, a mating groove is formed at one end of the pin shaft body close to the abutting portion, and the mating groove is recessed inward along the radial direction of the pin shaft body. By providing the mating groove, on the one hand, the weight and material cost of the pin shaft body can be reduced. On the other hand, when the limiting hole is opened on the limiting seat and the opening position of the limiting hole corresponds to that of the mating groove, and the axial limiting member extends into the axial limiting seat through the insertion of the limiting hole, the pin shaft body of the connecting member will sequentially pass through the first connection hole and the second connection hole. When the axial limiting member is inserted into the limiting hole, it will extend into the mating groove. At this time, the axial movement of the connecting member is restricted by the mating groove, so that the pin shaft body can be prevented from falling off.

[0025] In the above technical solution, a third connection hole is provided on the axial limiting seat, and the connecting member is sequentially connected to the limiting main board through the third connection hole, the first connection hole and the second connection hole.

[0026] In this technical solution, by providing a third connection hole on the axial limiting seat, when the staff needs to install the pressing plate, the pin shaft body of the connecting member can be sequentially passed through the third connection hole, the first connection hole and the second connection hole.

[0027] Further, for the convenience of the user's assembly operation, the axis of the third connection hole can be made to coincide with the axes of the first connection hole and the second connection hole. In addition, the third connection hole can be set in the shape of a kidney-shaped hole to facilitate calibration and positioning during the assembly process.

[0028] An embodiment of the second aspect of the present invention provides a transfer machine assembly, including a transfer machine; two bracket limiting structures, which are respectively arranged on the left and right sides in the advancing direction of the transfer machine, wherein there is a non-zero gap between the transfer machine and the limiting main board of the bracket limiting structure.

[0029] According to the embodiment of the transfer machine assembly of the present invention, there are two bracket limiting structures in the transfer machine assembly. During the working process, the transfer machine needs to travel through the hydraulic support. The two bracket limiting structures are respectively arranged on both sides in the advancing direction, so that the transfer machine can be more stable and reliable during the traveling process. There is a non-zero gap between the transfer machine and the limiting main board of the limiting structure, which can prevent wear between the transfer machine and the limiting main board and the pin shaft body of the connecting member, thus making the structure of the transfer machine assembly more reasonable.

[0030] Among them, the gap between the transfer machine and the limit main board is 10 mm.

[0031] For the embodiment of the transfer machine assembly provided by the present invention, due to the provision of the bracket limit structure in any of the above technical solutions, it thus has all the above beneficial effects, which will not be elaborated herein.

[0032] The additional aspects and advantages of the embodiments of the present invention will become apparent in the following description section or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The structural schematic diagram of the bracket limit structure according to an embodiment of the present invention is shown;

[0034] Figure 2 The structural schematic diagram of the bracket limit structure according to an embodiment of the present invention is shown;

[0035] Figure 3 The structural schematic diagram of the relative positions of the connecting seat, the limiting member and the pressing plate according to the present invention is shown;

[0036] Figure 4 The structural schematic diagram of an embodiment of the connecting seat according to the present invention is shown;

[0037] Figure 5 The structural schematic diagram of an embodiment of the connecting seat and the axial limiting seat according to the present invention is shown;

[0038] Figure 6 The structural schematic diagram of an embodiment of the connecting member according to the present invention is shown;

[0039] Figure 7 The structural schematic diagram of the limit main board according to the present invention is shown;

[0040] Figure 8 The structural schematic diagram of an embodiment of a transfer machine assembly according to the present invention is shown.

[0041] Among them, Figures 1 to 8 The corresponding relationship between the reference numerals and the component names in the figures is as follows:

[0042] 1: support member; 11: first support mating portion; 2: limit assembly; 21: limit main board; 211 through hole; 22: connecting seat; 221: connecting portion; 2211: chamfer; 222: mating portion; 2221: first connection hole; 223: gap; 23: limiting member; 24: pressing plate; 242: second support mating portion; 25: connecting member; 251: pin shaft body; 252: mating groove; 253: abutting portion; 26: reinforcing rib; 27: axial limiting seat; 271: limiting hole; 272: third connection hole; 28: axial limiting member, 3 transfer machine assembly, 31 transfer machine. Detailed implementation manners

[0043] In order to more clearly understand the above objects, features and advantages of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.

[0044] In the following description, many specific details are set forth in order to fully understand the present application. However, the embodiments of the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited to the limitations of the specific embodiments disclosed below.

[0045] The following refers to Figures 1 to 8 Describe a support limiting structure and a loader assembly provided according to some embodiments of the present invention.

[0046] Embodiment 1

[0047] As Figure 1 shown, a support limiting structure provided by an embodiment of the present invention includes: a support member 1 and a limiting assembly 2. There is one limiting assembly 2 and it is arranged on one side of the support member 1. As Figure 3 and Figure 4 shown, the limiting assembly 2 includes a limiting main board 21, a pressing plate 24 and a connecting member 25. On the side close to the support member 1, the limiting main board 21 is provided with a connecting seat 22, a limiting member 23 and a reinforcing rib 26. The reinforcing rib 26 is fixed on the side of the limiting main board 21 close to the support member 1. The connecting seat 22 includes a connecting portion 221 and a mating portion 222. Both the connecting portion 221 and the mating portion 222 are rectangular parallelepiped-shaped and the mating portion 222 extends upward from one end of the connecting portion 221. There is a gap 223 between the mating portion 222 and the limiting main board 21, and the pressing plate 24 is arranged in the gap 223 between the two. As Figure 4As shown, a first connection hole 2221 is formed on the mating portion 222, a second connection hole (not marked in the figure) is formed on the limiting main board 21 at a position corresponding to the first connection hole 2221, and a third connection hole 272 is formed on the pressing plate 24. A chamfer 2211 is formed at the bottom of the end of the connecting portion 221 close to the limiting main board 21, and the chamfer 2211 is formed below the gap 223 between the mating portion 222 and the limiting main board 21. The connecting member 25 includes a pin shaft body 251 and a stopping portion 253 at one end of the pin shaft body 251. The maximum diameter of the stopping portion 253 is greater than the maximum diameter of the pin shaft body 251, and the maximum diameter of the pin shaft body 251 is less than the diameters of the first connection hole 2221, the second connection hole, and the third connection hole 272. The pin shaft body 251 can sequentially pass through the first connection hole 2221, the third connection hole 272, and the second connection hole, so that the pressing plate 24 is rotatably connected to the limiting main board 21 through the pin shaft body 251. The limiting member 23 is arranged above the end of the pressing plate 24 far from the pin shaft body 251.

[0048] Embodiment Two

[0049] As Figure 2 shown, the difference from Embodiment One is that there are two limiting assemblies 2, and the two limiting assemblies 2 are respectively arranged on both sides of the support member 1, and the sides of the limiting main boards 21 of different limiting assemblies 2 are parallel to each other.

[0050] Embodiment Three

[0051] On the basis of Embodiment One or Embodiment Two, as Figure 1 and Figure 2 shown, a first support mating portion 11 is arranged on the support member 1, a second support mating portion 242 is arranged on the pressing plate 24, and the second support mating portion 242 is arranged at the end far from the pin shaft body 251. The pressing plate 24 can rotate around the pin shaft body 251 and can only rotate between two limit positions, namely the first support mating portion 11 of the support member 1 abuts against the second support mating portion 242 of the pressing plate 24 and the other end of the pressing plate 24 abuts against the limiting member 23.

[0052] As Figure 3 and Figure 5 shown, the bracket limiting structure further includes an axial limiting seat 27 and an axial limiting member 28. The axial limiting seat 27 is arranged on the side of the mating portion 222 of the connecting seat 22 far from the limiting main board 21. As Figure 6 shown, a mating groove 252 radially recessed inward along the pin shaft body 251 is formed at one end of the pin shaft body 251 close to the stopping portion 253, and a limiting hole 271 corresponding to the position of the mating groove 252 is formed on the axial limiting seat 27. The axial limiting member 28 can extend into the interior of the axial limiting seat 27 through the limiting hole 271 and cooperate with the mating groove 252.

[0053] Among them, the number of the limiting holes 271 is two, which are arranged on the side wall of the axial limiting seat. The axial limiting member is U-shaped, and both ends of the axial limiting member respectively pass through a limiting hole to the fitting groove.

[0054] Embodiment 4

[0055] As Figure 8 shown, the transfer machine assembly 3 provided in this embodiment includes a transfer machine 31 and two bracket limiting structures in any of the above technical solutions. Among them, there is a non-zero gap between the transfer machine 31 and the limiting main board 21 of the bracket limiting structure.

[0056] Among them, the gap between the transfer machine 31 and the limiting main board 21 is 10 mm.

[0057] Since the transfer machine assembly provided in this embodiment is provided with the bracket limiting structure in any of the above embodiments, it has all the above beneficial effects, which will not be elaborated here.

[0058] Embodiment 5

[0059] The column limiting structure is composed of a stopper (i.e., the limiting member 23), a pressing plate 24, a lock pin seat (i.e., the connecting seat 22), a stop pin seat (i.e., the axial limiting seat 27), a U-shaped clamp (i.e., the axial limiting member 28), a reinforcing rib 26, a lock pin shaft (i.e., the connecting member 25), and a main rib (i.e., the limiting main board 21).

[0060] As Figure 7 shown, a through hole 211 with a diameter D dimension is machined on the main rib, and D should be 2 mm larger than the diameter of the lock pin shaft.

[0061] As Figure 4 shown, a hole (i.e., the first connection hole 2221) with a diameter D1 dimension and a chamfered groove are machined on the lock pin seat. The diameter D1 dimension is 2 mm larger than the size of the lock pin shaft, and the chamfer is 2 mm smaller than the plate thickness of the pin shaft seat, but not more than 20 mm. That is, the distance between the chamfered edge and the edge of the lock pin seat is 2 mm to 20 mm.

[0062] Among them, the stopper, the lock pin seat, the stop pin seat, and the reinforcing rib are respectively welded to the main rib. The opening of the lock pin seat should face upward. If its opening is set downward, the pressing plate cannot be installed on the main rib.

[0063] After the column (i.e., the support member 1) is installed, first install the pressing plate, then insert the lock pin shaft. The insertion direction of the lock pin shaft is from the column side to the transfer machine side, and then it is fixed by the U-shaped clamp.

[0064] In this embodiment, the direction of inserting the locking pin shaft is changed to be inserted from the column into the conveyor. This provides a large operating space, making installation and replacement more convenient. It can also reduce the gap between the conveyor and the hydraulic support, ensuring that the conveyor operates more effectively and smoothly, and reducing the overall size and cost of the hydraulic support, thereby enhancing market competitiveness.

[0065] After the locking pin shaft is fixed with a U-shaped clamp, there is a boss exposed outside, which is convenient for disassembly.

[0066] The locking pin seat is welded with a bevel to increase the welding strength.

[0067] According to the embodiment of the support limiting structure and the conveyor assembly of the present invention, when the staff installs and disassembles the pressure plate, it is only necessary to insert the connecting piece from one side of the support piece towards the limiting main board. Thus, when the conveyor passes through the hydraulic support, the gap between the conveyor and the hydraulic support is greatly reduced, and the conveyor has higher stability during travel.

[0068] In the present invention, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; the term "plural" refers to two or more, unless otherwise clearly defined. Terms such as "installation", "connection", "connection", and "fixation" should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", and "rear" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0070] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", and "specific embodiments" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0071] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A bracket limiting structure, characterized in that, Comprising: A support member (1); A limit assembly (2), provided on at least one side of the support member (1), and the limit assembly (2) includes: A limit main board (21), on one side of the limit main board (21) close to the support member (1), there are provided a connection seat (22) and a limit member (23); A pressing plate (24), correspondingly arranged with the support member (1), one end of the pressing plate (24) is rotatably connected to the connection seat (22) through a connecting member (25), and the limit member (23) can limit the movement position of the other end of the pressing plate (24), wherein, the connecting member (25) is connected from one side of the support member (1) through the connection seat (22) and the pressing plate (24) to the limit main board (21); The connection seat (22) specifically includes: A connection portion (221), fixedly connected to the limit main board (21); A cooperation portion (222), connected to one end of the connection portion (221) far from the limit main board (21), and the cooperation portion (222) extends upward from the connection portion (221), and a first connection hole (2221) is provided on the cooperation portion (222), wherein, there is a gap (223) between the cooperation portion (222) and the limit main board (21), the pressing plate (24) is arranged in the gap (223), and a second connection hole is provided on the pressing plate (24), and the connecting member (25) is connected to the limit main board (21) through the first connection hole (2221) and the second connection hole; The projection of the connecting member (25) on the limit main board (21) does not coincide with the projection of the support member (1) on the limit main board (21); One end of the connection portion (221) connected to the limit main board (21) is provided with a chamfer (2211), and the chamfer (2211) is arranged on the side of the connection portion (221) far from the gap (223); The support member (1) is provided with a first support cooperation portion (11), and one side of the pressing plate (24) far from the limit member (23) is provided with a second support cooperation portion (242), and the pressing plate (24) can move between a first working position and a second working position relative to the limit main board (21), wherein, the first working position is when the first support cooperation portion (11) abuts against the second support cooperation portion (242), and the second working position is when the other end of the pressing plate (24) abuts against the limit member (23); The connecting member (25) specifically includes: a pin shaft body (251) and a stop portion (253) formed at one end of the pin shaft body (251), wherein, the maximum diameter of the stop portion (253) is greater than the maximum diameter of the pin shaft body (251); One end of the pin shaft body (251) close to the stop portion (253) is provided with a cooperation groove (252) recessed radially inward along the pin shaft body (251); The bracket limit structure further includes: Axial limiting seat (27), which is arranged on the side of the connecting seat (22) away from the limiting main board (21), and a limiting hole (271) corresponding to the mating groove (252) is provided on the axial limiting seat (27); Axial limiting member (28), the axial limiting member (28) penetrates into the axial limiting seat (27) through the limiting hole (271), and limits the axial movement of the connecting member (25) under the action of the axial limiting member (28) and the mating groove (252); The number of the limiting holes is two, which are arranged on the side wall of the axial limiting seat. The axial limiting member is U-shaped, and both ends of the axial limiting member pass through a limiting hole respectively to the mating groove.

2. The bracket limiting structure according to claim 1, characterized in that, It further includes: Reinforcing rib (26), which is arranged on the side of the limiting main board (21) close to the support member (1). The reinforcing rib (26) is arranged below the connecting portion (221), and the reinforcing rib (26) abuts against the connecting portion (221).

3. The bracket limit structure according to claim 1, characterized in that, A third connecting hole (272) is provided on the axial limiting seat (27), and the connecting member (25) is connected to the limiting main board (21) in sequence through the third connecting hole (272), the first connecting hole (2221) and the second connecting hole.

4. A transfer machine assembly (3), characterized in that, It includes: Loader (31); Two bracket limiting structures as described in any one of claims 1 to 3 are respectively arranged on the left and right sides in the advancing direction of the loader (31), wherein, there is a non-zero gap between the loader (31) and the limiting main board (21) of the bracket limiting structure.

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