CN217808438U

CN217808438U - Device for preventing arm support pin shaft from falling off

Info

Publication number: CN217808438U
Application number: CN202221266616.XU
Authority: CN
Inventors: 薛振; 肖华; 杨慧杰; 刘威; 卞剑韬
Original assignee: Xuzhou Villead Heavy Industry Technology Co ltd
Current assignee: Xuzhou Villead Heavy Industry Technology Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-11-15
Anticipated expiration: 2032-05-24

Abstract

The utility model relates to a connect the erection equipment field, and disclose a be used for preventing cantilever crane round pin axle dropout device, including the round pin axle, the round pin axle is pegged graft on the cantilever crane, the round pin axle passes the one end of pegging graft and is pegged graft there is the spring catch, the bottom of round pin axle is provided with the guiding axle, the guiding axle is pegged graft on the guiding support fly leaf, guiding support fly leaf one side articulates through connecting bolt has the guiding support fixed plate, the one end of guiding support fixed plate is connected on the cantilever crane, be connected through connecting device between round pin axle and the guiding axle, when the round pin axle is in the disconnection, the round pin axle anterior segment is in connecting the hinge ear otic placode, can not influence the business turn over of single hinge ear, and when the round pin axle inserts in place, the epaxial spring pinhole of round pin exposes, and at this moment the spring catch can be inserted. The connection state of the pin shaft and the hinge lug is relatively stable, the upward movement of the pin shaft can be limited by the shaft shoulder of the pin shaft, and the downward movement of the spring pin can be limited.

Description

Device for preventing arm support pin shaft from falling off

Technical Field

The utility model relates to a connect the erection equipment field, specifically be a device for preventing cantilever crane round pin axle drops.

Background

When the truss arms of the crawler crane are connected, the truss arms are connected through pin shafts, and the pin shafts are easy to fall off on the ground in the dismounting process. Especially, when the field condition is limited and the connecting rod is required to be disassembled in the air, the condition that the pin shaft falls in the air can be met when the pin shaft is disassembled, and potential safety hazards exist. When the pin shaft is connected in the air, the pin shaft is quite troublesome to be conveyed from the ground to a working surface, and therefore the device for preventing the arm support pin shaft from falling off is provided.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a be directed against the not enough of prior art, the utility model provides a be used for preventing cantilever crane round pin axle dropout device has solved foretell problem.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the device for preventing the arm support pin shaft from falling comprises a pin shaft, wherein the pin shaft is inserted on an arm support, a spring pin is inserted into one end of the pin shaft, which penetrates through the inserted end, a guide shaft is arranged at the bottom of the pin shaft, the guide shaft is inserted on a guide support movable plate, one side of the guide support movable plate is hinged with a guide support fixed plate through a connecting bolt, one end of the guide support fixed plate is connected on the arm support, the pin shaft is connected with the guide shaft through a connecting device, when the pin shaft is disassembled, the spring pin is pulled out, the top of the pin shaft loses the supporting force of the spring pin, the pin shaft drops downwards at the moment, the bottom of the pin shaft can be attached to the guide support movable plate, when the pin shaft is disconnected, the front section of the pin shaft is positioned in a connecting hinge lug plate, the inlet and outlet of a single hinge lug cannot be influenced, when the pin shaft is inserted in place, the spring pin hole on the pin shaft is exposed, and the spring pin can be inserted. The hinge pin and the hinge lug are relatively stable in connection state, the upward movement of the hinge pin can be limited by the shaft shoulder of the hinge pin, and the downward movement of the spring pin can be limited.

Preferably, the bottom of the pin shaft is integrally formed with a protrusion for limiting the pin shaft to move upwards.

Preferably, a groove is formed in the position, corresponding to the guide shaft, of the bottom of the pin shaft, and the guide shaft and the groove are connected in an inserting mode.

Preferably, the lower end of the pin shaft is provided with a slot communicated with the groove, the connecting device comprises an inserting rod, the inserting rod is inserted into the slot, a clamping groove is formed in the position, corresponding to the inserting rod, of the guide shaft, one end, extending to the inside of the groove, of the inserting rod is inserted into the clamping groove, when the position of the guide shaft needs to be limited, the inserting rod is inserted into the clamping groove, and the fixing of the position of the guide shaft can be completed.

Preferably, inner wall grooves are formed in the inner walls of the upper side and the lower side of the slot, a sliding block is fixedly mounted on the position, corresponding to the inner wall grooves, of the insertion rod, the sliding block is movably inserted into the inner wall grooves, the insertion rod can be completely limited in the slot due to the arrangement, and the insertion rod is prevented from being lost due to leakage.

Preferably, the inside fixed mounting of inner wall slot has the spring, the spring is in the same place with slider fixed connection, when needs take out or install the guiding axle, with the grafting pole of both sides to the one side pulling that deviates from each other, then take out or pack into the guiding axle, then loosen the grafting pole, the spring kick-backs this moment, can drive the grafting pole and reset, such setting can drive the grafting pole and independently reset convenient to use.

(III) advantageous effects

Compared with the prior art, the utility model provides a be used for preventing cantilever crane round pin axle dropout device possesses following beneficial effect:

1. according to the device for preventing the arm support pin shaft from falling off, when the pin shaft is disconnected, the front section of the pin shaft is positioned in the lug plate of the connecting hinge lug, the single hinge lug cannot be influenced to enter and exit, when the pin shaft is inserted in place, the spring pin hole on the pin shaft is exposed, and at the moment, the spring pin can be inserted. The hinge pin and the hinge lug are relatively stable in connection state, the upward movement of the hinge pin can be limited by the shaft shoulder, the downward movement of the spring pin can be limited, the hinge pin does not need to be taken down from the arm support in the two states, the arm support can be disassembled and assembled, the condition that the hinge pin falls off is avoided, the hinge pin can always follow the arm support, the assembling and disassembling are not affected, and the hinge pin is not easy to lose.

2. According to the device for preventing the arm support pin shaft from falling off, the sliding block is fixedly installed on the position, corresponding to the inner wall groove, of the insertion rod, the sliding block is movably inserted into the inner wall groove, the insertion rod can be completely limited in the insertion groove due to the arrangement, and the insertion rod is prevented from being lost due to leakage.

3. This be used for preventing cantilever crane round pin axle sheds device, when needs take out or install the guiding axle, with the grafting pole of both sides to the one side pulling that deviates from each other, then take out the guiding axle or pack into, then loosen the grafting pole, the spring kick-backs this moment, can drive the grafting pole and reset, such setting can drive the grafting pole and independently reset convenient to use.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a schematic diagram of the insertion and extraction of the pin shaft.

In the figure: 1. a pin shaft; 2. a spring pin; 3. a guide shaft; 4. a guide bracket movable plate; 5. a connecting bolt; 6. fixing a guide bracket; 7. a groove; 8. a slot; 9. a card slot; 10. an inner wall groove; 11. a plug rod; 12. a spring; 13. a slide block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a device for preventing a boom pin shaft from falling off includes a pin shaft 1, the pin shaft 1 is inserted into a boom, a spring pin 2 is inserted into one end of the pin shaft 1, a guide shaft 3 is disposed at the bottom of the pin shaft 1, the guide shaft 3 is inserted into a guide support movable plate 4, a guide support fixed plate 6 is hinged to one side of the guide support movable plate 4 through a connecting bolt 5, one end of the guide support fixed plate 6 is connected to the boom, the pin shaft 1 and the guide shaft 3 are connected through a connecting device, when the pin shaft 1 is detached, the spring pin 2 is pulled out, the top of the pin shaft 1 loses the supporting force of the spring pin 2, the pin shaft 1 falls downward, the bottom of the pin shaft 1 is attached to the guide support movable plate 4, when the pin shaft 1 is disconnected, the front section of the pin shaft 1 is located in an ear plate of a connecting hinge, the entry and exit of a single hinge ear are not affected, when the pin shaft 1 is inserted into place, the spring pin hole on the pin shaft 1 is exposed, and the spring pin 2 can be inserted. The hinge pin 1 and the hinge lug are relatively stable in connection state, the upward movement hinge pin 1 can be limited by the shaft shoulder, the downward movement spring pin 2 can be limited, in the last two states, the hinge pin 1 does not need to be taken down from the arm support, the arm support can be disassembled and assembled, the condition that the hinge pin falls off is avoided, the hinge pin 1 can always follow the arm support, the assembly and disassembly are not affected, and the hinge pin 1 is not easy to lose.

Further, the bottom of the pin shaft 1 is integrally formed with a protrusion for limiting the upward movement of the pin shaft 1.

Furthermore, a groove 7 is formed in the position, corresponding to the guide shaft 3, of the bottom of the pin shaft 1, and the guide shaft 3 and the groove 7 are connected in an inserted mode.

Further, the slot 8 that communicates with recess 7 is seted up to the lower extreme of round pin axle 1, connecting device includes grafting pole 11, grafting pole 11 is pegged graft in the inside of slot 8, draw-in groove 9 has been seted up on the position that guiding axle 3 corresponds grafting pole 11, grafting pole 11 extends to the inside one end of recess 7 and is pegged graft together with draw-in groove 9, when needs are injectd the position of guiding axle 3, insert the inside of draw-in groove 9 with grafting pole 11, can accomplish the fixed to guiding axle 3 position.

Furthermore, inner wall grooves 10 are formed in the inner walls of the upper side and the lower side of the slot 8, sliding blocks 13 are fixedly mounted at the positions, corresponding to the inner wall grooves 10, of the insertion rods 11, the sliding blocks 13 are movably inserted into the inner wall grooves 10, the insertion rods 11 can be completely limited in the slot 8 due to the arrangement, and the insertion rods 11 are prevented from being lost due to leakage.

Further, the inside fixed mounting of inner wall slot 10 has spring 12, and spring 12 is in the same place with slider 13 fixed connection, when needs take out or install guiding axle 3, with the peg graft pole 11 of both sides to the one side pulling that deviates from each other, then take out or pack into guiding axle 3, then loosen peg graft pole 11, spring 12 kick-backs this moment, can drive peg graft pole 11 and reset, and such setting can drive peg graft pole 11 and independently reset convenient to use.

The working principle is as follows: when dismantling round pin axle 1, extract spring catch 2, the holding power of spring catch 2 is lost at the top of round pin axle 1, and round pin axle 1 drops downwards this moment, and the bottom of round pin axle 1 can laminate with guide bracket fly leaf 4, and when round pin axle 1 was in the disconnection, round pin axle 1 anterior segment was in the connection hinge ear otic placode, can not influence the business turn over of single hinge ear, and when round pin axle 1 inserted the position, the spring pinhole on round pin axle 1 exposes, and at this moment spring catch 2 can be inserted. The hinge pin 1 and the hinge lug are relatively stable in connection state, the upward movement hinge pin 1 can be limited by the shaft shoulder, the downward movement spring pin 2 can be limited, in the last two states, the hinge pin 1 does not need to be taken down from the arm support, the arm support can be disassembled and assembled, the condition that the hinge pin falls off is avoided, the hinge pin 1 can always follow the arm support, the assembly and disassembly are not affected, and the hinge pin 1 is not easy to lose.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a be used for preventing cantilever crane round pin axle dropout device, includes round pin axle (1), its characterized in that: the hinge pin (1) is inserted on the arm support, the spring pin (2) is inserted at one end of the hinge pin (1) penetrating through the insertion, a guide shaft (3) is arranged at the bottom of the hinge pin (1), the guide shaft (3) is inserted on a guide support movable plate (4), a guide support fixed plate (6) is hinged to one side of the guide support movable plate (4) through a connecting bolt (5), one end of the guide support fixed plate (6) is connected on the arm support, and the hinge pin (1) is connected with the guide shaft (3) through a connecting device.

2. The device for preventing the arm support pin shaft from falling off according to claim 1, is characterized in that: the bottom of the pin shaft (1) is integrally formed with a bulge for limiting the upward movement of the pin shaft (1).

3. The device for preventing the arm support pin shaft from falling off according to claim 1, is characterized in that: a groove (7) is formed in the position, corresponding to the guide shaft (3), of the bottom of the pin shaft (1), and the guide shaft (3) is connected with the groove (7) in an inserted mode.

4. The device for preventing the arm support pin shaft from falling off according to claim 3, characterized in that: the lower end of the pin shaft (1) is provided with a slot (8) communicated with the groove (7), the connecting device comprises an inserting rod (11), the inserting rod (11) is inserted into the slot (8), a clamping groove (9) is formed in the position, corresponding to the inserting rod (11), of the guide shaft (3), and one end, extending to the inside of the groove (7), of the inserting rod (11) is inserted into the clamping groove (9).

5. The device for preventing the arm support pin shaft from falling off according to claim 4, wherein: inner wall grooves (10) are formed in the inner walls of the upper side and the lower side of the inserting groove (8), sliding blocks (13) are fixedly installed on the positions, corresponding to the inner wall grooves (10), of the inserting rod (11), and the sliding blocks (13) are movably inserted into the inner wall grooves (10).

6. The device for preventing the arm support pin shaft from falling off according to claim 5, characterized in that: and a spring (12) is fixedly arranged in the inner wall groove (10), and the spring (12) is fixedly connected with the sliding block (13).