CN219567390U

CN219567390U - Pin joint structure convenient for releasing attached load of tower crane

Info

Publication number: CN219567390U
Application number: CN202320318822.9U
Authority: CN
Inventors: 袁少震; 米成宏; 郑怀鹏; 刘振
Original assignee: Xuzhou Construction Machinery Group Co Ltd XCMG
Current assignee: Xuzhou Construction Machinery Group Co Ltd XCMG
Priority date: 2023-02-27
Filing date: 2023-02-27
Publication date: 2023-08-22
Anticipated expiration: 2033-02-27

Abstract

The utility model discloses a pin joint structure which is convenient for releasing the attached load of a tower crane, belonging to the technical field of tower cranes and aiming at solving the problems that a pin shaft between an attached frame and a supporting rod is inconvenient to detach and release the load in the prior art. The device comprises an attachment frame lug plate, a supporting piece and a pin shaft, wherein the supporting piece comprises a first supporting lug plate and a second supporting lug plate which are arranged in parallel up and down, a locking mechanism for locking and fixing the pin shaft is arranged on the second supporting lug plate, the pin shaft at least comprises a first section and a second section, the outer diameter of the second section is larger than that of the first section, a first through hole for the pin shaft to pass through is formed in the first supporting lug plate, a second through hole for the pin shaft to pass through is formed in the second supporting lug plate, and a third through hole is formed in the attachment frame lug plate; the utility model is suitable for the tower crane, is convenient to operate, has large movable space, saves time and labor, reduces the risk, has low disassembly difficulty, is convenient for high-altitude operation, and improves the working efficiency.

Description

Pin joint structure convenient for releasing attached load of tower crane

Technical Field

The utility model relates to the technical field of tower cranes, in particular to a pin joint structure convenient for releasing the attachment load of a tower crane.

Background

When the supporting rod is installed on the attaching frame of the tower crane, the connecting pin shafts connecting the supporting rod and the attaching frame are smashed into the connecting lug plates from top to bottom, and when the attaching load needs to be released, the connecting pin shafts need to be withdrawn from bottom to top.

In the prior art, when the attaching frame and the supporting rod are required to be detached and the load is required to be released, the connecting pin shaft is required to be withdrawn from the lower part to the upper part, so that the pin shaft is required to be smashed from the lower part to the upper part by using a hammer, but the operation is very difficult to complete at high altitude, and the operation space, time and labor are not needed, and a certain danger exists.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, provide a pin joint structure which is convenient for releasing the attached load of a tower crane, and solve the problems that a pin shaft between an attached frame and a supporting rod is inconvenient to detach and release the load.

In order to solve the technical problems, the utility model is realized by adopting the following technical scheme:

the utility model provides a pin joint structure which is convenient for releasing the attachment load of a tower crane, comprising the following components: the device comprises an attaching frame lug plate, a supporting piece and a pin shaft, wherein the supporting piece comprises a first supporting lug plate and a second supporting lug plate which are arranged in parallel up and down, a locking mechanism for locking and fixing the pin shaft is arranged on the second supporting lug plate, the pin shaft at least comprises a first section and a second section, the outer diameter of the second section is larger than that of the first section, a first through hole for the pin shaft to pass through is formed in the first supporting lug plate, a second through hole for the pin shaft to pass through is formed in the second supporting lug plate, and a third through hole is formed in the attaching frame lug plate;

in the first working state, the first section of the pin shaft is sequentially arranged in the first through hole, the third through hole and the third through hole in a penetrating way, and the first section of the pin shaft is in clearance fit with the third through hole in the circumferential direction;

and in the second working state, the second section of the pin shaft sequentially penetrates through the first through hole, the third through hole and the third through hole, and the second section of the pin shaft is in interference fit with the third through hole in the circumferential direction.

Furthermore, the pin shaft is in a truncated cone-shaped structure with the outer diameter gradually reduced from the second section to the first section.

Further, the second section and the first section of the pin shaft are both in cylindrical structures.

Further, rib plates are arranged on the side walls of the first supporting ear plate and the second supporting ear plate; during installation, the rib plate is fixedly connected with the stay bar and used for improving the supporting strength of the supporting piece.

Further, the rib plate is arranged on the side wall of the first support lug plate and the second support lug plate which are far away from each other, and the rib plate is provided with a plurality of rib plates and is arranged at intervals.

Further, the locking mechanism comprises a supporting plate, a lock pin and a clamp, wherein the supporting plate is fixedly connected to the bottom of the second supporting ear plate, a plurality of limiting holes matched with the lock pin are formed in the supporting plate, and through holes matched with the lock pin are formed in the pin shaft.

Further, the support plate is provided with two and is arranged on two sides of the second through hole in parallel.

Furthermore, the bottom of the pin shaft is provided with a limiting sliding plate, and the supporting plate is provided with a limiting sliding groove for the sliding of the limiting sliding plate.

Compared with the prior art, the utility model has the following beneficial effects:

1. the pin shaft comprises the first section and the second section, and the outer diameter of the second section is larger than that of the first section, so that the pin shaft can be disassembled in a top-down smashing mode, the operation is convenient, the movable space is large, time and labor are saved, the danger is reduced, and two matching modes of interference and clearance are formed by matching with the third through hole, so that the disassembly difficulty is reduced, the attachment load is conveniently released, the high-altitude operation of staff is facilitated, the working efficiency is improved, and the practical application effect is good;

2. according to the utility model, the lock pin is detachably connected with the clamp after passing through the limiting hole and the through hole, so that the locking and fixing of the pin shaft can be conveniently finished, and the locking device is simple in operation, convenient to install and convenient to produce and process;

3. according to the utility model, the limiting sliding plate slides along the limiting sliding groove to play a role in limiting the rotation of the pin shaft, so that the through hole can be just aligned with the limiting hole without adjustment by an operator, thereby improving the operation efficiency and being convenient to use.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of a pin joint structure for facilitating release of tower crane attachment loads provided by an embodiment of the present utility model;

FIG. 2 is a front cross-sectional view of the pin joint structure of FIG. 1 for facilitating release of tower crane attachment loads during normal use;

FIG. 3 is a front cross-sectional view of the pin joint structure of FIG. 1 for facilitating release of an attached load of the tower crane upon release of the load;

in the figure: 1. attaching a frame ear plate; 11. a third through hole; 2. a support; 21. a first support ear plate; 211. a first through hole; 22. a second support ear plate; 221. a second through hole; 3. a pin shaft; 31. a first section; 32. a second section; 33. a through hole; 4. rib plates; 5. a brace rod; 6. a locking mechanism; 61. a support plate; 611. a limiting hole; 612. limiting sliding grooves; 62. a locking pin; 63. a clip; 7. and a limit sliding plate.

Detailed Description

The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Embodiment one:

as shown in fig. 1 to 3, an embodiment of the present utility model provides a pin joint structure for facilitating release of an attachment load of a tower crane, including: the frame ear plate 1, the supporting piece 2 and the pin shaft 3 are attached, the supporting piece 2 comprises a first supporting ear plate 21 and a second supporting ear plate 22 which are arranged in parallel up and down, a locking mechanism 6 for locking the fixed pin shaft 3 is arranged on the second supporting ear plate 22, the pin shaft 3 at least comprises a first section 31 and a second section 32, the outer diameter of the second section 32 is larger than that of the first section 31, a first through hole 211 for the pin shaft 3 to penetrate is formed in the first supporting ear plate 21, a second through hole 221 for the pin shaft 3 to penetrate is formed in the second supporting ear plate 22, and a third through hole 11 is formed in the frame ear plate 1.

In the second working state, the second section 32 of the pin shaft 3 is sequentially arranged in the first through hole 211, the third through hole 11 and the third through hole 11 in a penetrating manner, and the second section 32 of the pin shaft 3 is in interference fit with the third through hole 11 in the circumferential direction.

Specifically, during use, the attachment frame lug plate 1 is inserted between the first support lug plate 21 and the second support lug plate 22, the first through hole 211, the second through hole 221 and the third through hole 11 are aligned, then the pin shaft 3 is sequentially inserted into the second through hole 221, the third through hole 11 and the first through hole 211 from bottom to top until the second section 32 of the pin shaft 3 circumferentially forms interference fit with the third through hole 11, and finally the pin shaft 3 is locked and fixed by the locking mechanism 6 so as to prevent unexpected loosening during use.

In the first working state, the first section 31 of the pin shaft 3 is sequentially arranged in the first through hole 211, the third through hole 11 and the third through hole 11 in a penetrating manner, and the first section 31 of the pin shaft 3 is in clearance fit with the third through hole 11 in the circumferential direction.

Specifically, when the attached load needs to be released, the locking and fixing of the locking mechanism 6 are released, then the pin shaft 3 is smashed from top to bottom, and the pin shaft 3 can be displaced from top to bottom by a certain distance, so that the first section 31 of the pin shaft is in clearance fit with the third through hole 11 in the circumferential direction, and finally the pin shaft 3 is locked and fixed by the locking mechanism 6 again, so that the effect of releasing the attached load is achieved.

Compared with the prior art, the pin shaft 3 is smashed from top to bottom, so that the operation is convenient, the activity space is large, time and labor are saved, and the danger is reduced; in addition, the outer diameter of the second section 32 of the pin shaft 3 is larger than that of the first section 31, and the second section is matched with the third through hole 11, so that two matching forms of interference and clearance can be formed, the disassembly difficulty is reduced, the attached load is conveniently released, the high-altitude operation of workers is facilitated, the working efficiency is improved, and the practical application effect is good.

In this embodiment, the pin 3 has a truncated cone structure with the outer diameter gradually decreasing from the second section 32 to the first section 31, and the outer diameter thereof changes in transition, so that the pin is more gentle and stable when switching between two working states, and is convenient to operate. However, the present utility model is not limited thereto, and the second section 32 and the first section 31 may be cylindrical structures, and may be configured according to practical applications, and are not particularly limited thereto.

In the present embodiment, rib plates 4 are provided on the side walls of the first support ear plate 21 and the second support ear plate 22; during installation, the rib plates 4 are fixedly connected with the supporting rods 5 and are used for improving the supporting strength of the supporting piece 2.

Specifically, the rib plate 4 is supported between the first supporting ear plate 21 and the supporting rod 5 and between the second supporting ear plate 22 and the supporting rod 5, so that the first supporting ear plate 21 and the second supporting ear plate 22 can be supported, and the stress concentration at the joint of the rib plate and the supporting rod 5 is reduced, and the connection stability of the first supporting ear plate 21 and the second supporting ear plate 22 and the supporting rod 5 is improved.

Preferably, the rib 4 is arranged on the side wall of the first support lug 21 and the second support lug 22 distant from each other, and the rib 4 is provided in plurality and arranged at a distance from each other.

Specifically, the plurality of rib plates 4 support the first support ear plate 21 and the second support ear plate 22 together, so that the connection stability of the stay bar 5 and the first support ear plate 21 and the second support ear plate 22 is fully ensured.

In this embodiment, the locking mechanism 6 includes a support plate 61, a lock pin 62 and a clip 63, where the support plate 61 is fixedly connected to the bottom of the second support ear plate 22, a plurality of limiting holes 611 matching with the lock pin 62 are formed on the support plate 61, and a through hole 33 matching with the lock pin 62 is formed on the pin 3.

Specifically, the limiting holes 611 are uniformly arranged on the supporting plate 61 at intervals along the vertical direction, when the pin shaft 3 needs to be locked and fixed, the through holes 33 are aligned with the adjacent limiting holes 611, and then the lock pins 62 penetrate through the limiting holes 611 and the through holes 33 and then are detachably connected with the clips 63; the device is simple to operate, convenient to install, convenient to produce and process and good in use effect.

Preferably, the support plate 61 is provided with two and is disposed in parallel at both sides of the second through hole 221.

Specifically, the two support plates 61 can respectively limit and support the two ends of the lock pin 62, so that stress concentration can be reduced, the structural strength is improved, and the stability of the device is ensured.

Embodiment two:

as shown in fig. 1 to 3, the present embodiment provides a pin joint structure for facilitating the release of the attachment load of the tower crane, which is different from the first embodiment in that the bottom of the pin shaft 3 is provided with a limit slide plate 7, and the support plate 61 is provided with a limit slide groove 612 for sliding the limit slide plate 7.

Specifically, in the process of inserting the pin shaft 3 into the second through hole 221 from bottom to top, the limiting slide plate 7 slides along the limiting slide groove 612, which plays a role in rotationally limiting the pin shaft 3, so that the through hole 33 can be just aligned with the limiting hole 611, without adjustment of operators, the operation efficiency is improved, and the use is convenient.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.

Claims

1. A pin joint structure for facilitating release of tower crane attachment loads, comprising: the novel anti-theft device comprises an attachment frame lug plate (1), a supporting piece (2) and a pin shaft (3), wherein the supporting piece (2) comprises a first supporting lug plate (21) and a second supporting lug plate (22) which are arranged in parallel up and down, a locking mechanism (6) for locking the fixed pin shaft (3) is arranged on the second supporting lug plate (22), the pin shaft (3) at least comprises a first section (31) and a second section (32), the outer diameter of the second section (32) is larger than that of the first section (31), a first through hole (211) for the pin shaft (3) to penetrate is formed in the first supporting lug plate (21), a second through hole (221) for the pin shaft (3) to penetrate is formed in the second supporting lug plate (22), and a third through hole (11) is formed in the attachment frame lug plate (1);

in a first working state, the first section (31) of the pin shaft (3) is sequentially arranged in the first through hole (211), the third through hole (11) and the third through hole (11) in a penetrating mode, and the first section (31) of the pin shaft (3) is in clearance fit with the third through hole (11) in the circumferential direction;

during the second working state, the second section (32) of the pin shaft (3) sequentially penetrates through the first through hole (211), the third through hole (11) and the third through hole (11), and the second section (32) of the pin shaft (3) is in interference fit with the third through hole (11) in the circumferential direction.

2. The pin joint structure for facilitating release of tower crane attachment load according to claim 1, wherein the pin shaft (3) has a truncated cone-shaped structure with an outer diameter gradually reduced from the second section (32) to the first section (31).

3. The pin joint structure for facilitating release of tower crane attachment load according to claim 1, wherein the second section (32) and the first section (31) of the pin shaft (3) are both cylindrical structures.

4. The pin joint structure for facilitating release of tower crane attachment load according to claim 1, wherein rib plates (4) are provided on side walls of the first support lug plate (21) and the second support lug plate (22); during installation, the rib plates (4) are fixedly connected with the supporting rods (5) and are used for improving the supporting strength of the supporting piece (2).

5. A pin joint structure for facilitating release of tower crane attachment load according to claim 4, wherein the rib plates (4) are arranged on side walls of the first support lug plate (21) and the second support lug plate (22) which are away from each other, and the rib plates (4) are provided in plural and spaced apart arrangement from each other.

6. The pin joint structure convenient for releasing the attachment load of the tower crane according to claim 1, wherein the locking mechanism (6) comprises a supporting plate (61), a lock pin (62) and a clamp (63), the supporting plate (61) is fixedly connected to the bottom of the second supporting lug plate (22), a plurality of limiting holes (611) matched with the lock pin (62) are formed in the supporting plate (61), and a through hole (33) matched with the lock pin (62) is formed in the pin shaft (3).

7. A pin joint structure for facilitating release of tower crane attachment load according to claim 6, wherein the support plate (61) is provided with two and arranged in parallel on both sides of the second through hole (221).

8. The pin joint structure for facilitating release of tower crane attachment load according to claim 6 or 7, wherein the bottom of the pin shaft (3) is provided with a limit slide plate (7), and the support plate (61) is provided with a limit slide groove (612) for sliding the limit slide plate (7).