CN211004300U

CN211004300U - Tower crane couple scour protection top-mounting is put

Info

Publication number: CN211004300U
Application number: CN202020974078.4U
Authority: CN
Inventors: 谭标雄; 周俊杰
Original assignee: Foshan Nanfang Heavy Industry Co ltd
Current assignee: Foshan Nanfang Heavy Industry Co ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2020-07-14
Anticipated expiration: 2030-06-02

Abstract

The utility model discloses a tower crane hook anti-ejection device, which comprises a travel switch and a buffer arranged on a variable amplitude trolley, wherein the travel switch, the buffer and the hook are sequentially arranged on the same vertical line from top to bottom; the utility model discloses a set up buffer and travel switch, at the in-process that the couple rises, the couple can promote the buffer and continue to move upwards, the couple rises to contact and pushes up behind the overhead jack pole portion, continue to promote the slider, buffer spring and contact rise, until contact travel switch, the couple stops to continue to rise, realize the effect on scour protection top, buffer spring can cushion the impact force of couple simultaneously, protection travel switch avoids it to receive the impact damage, the accident that the operator caused misoperation and top because of the environmental factor influence has been solved, the simple practical reliability of overall structure.

Description

Tower crane couple scour protection top-mounting is put

Technical Field

The utility model belongs to the technical field of the mechanical skill and specifically relates to a tower crane couple scour protection top installation is related to.

Background

The trolley moves forwards and backwards during actual construction of the tower crane, even if the hoisting mechanism does not act, the distance between the hook and the trolley is constantly changed due to the movement of the amplitude-variable trolley, so that the situation that the hook impacts the amplitude-variable trolley is easily caused, and at the moment, the rotation of the braking hoisting mechanism can be controlled only by a cab operator through long-distance observation or monitoring of eyes, so that the hook is prevented from colliding with the amplitude-variable trolley; however, the judgment is often inaccurate due to the influence of environmental factors, so that misoperation causes that the hook directly impacts the amplitude-variable trolley, the steel wire rope is seriously broken, and the hook falls to cause the safety accidents of casualties and damage to buildings.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a practical and reliable tower crane hook anti-impact device with a buffering function.

In order to achieve the above purpose, the utility model provides a scheme does: a tower crane hook anti-ejection device comprises a travel switch and a buffer which are arranged on a luffing trolley, wherein the travel switch, the buffer and a hook are sequentially arranged on the same vertical line from top to bottom, and when the hook is contacted with the buffer, the buffer triggers the travel switch to stop the hook from rising; the buffer comprises a vertically extending sleeve, a contact and a sliding block, wherein the contact and the sliding block are connected in the sleeve in a sliding manner, the sleeve is fixedly connected to the amplitude-variable trolley, the contact is positioned above the sliding block, a buffer spring is connected between the contact and the sliding block, and a top rod part protruding out of the sleeve is formed on the lower side of the sliding block.

The utility model has the advantages that: realize couple protecting against shock top, the utility model discloses a set up buffer and travel switch, at the in-process that the couple rises, the couple can promote the buffer and continue to upwards remove, after the contact top pressure ejector pin portion that the couple rises, continue to promote the slider, buffer spring and contact rise, until contact travel switch, the couple stops to continue to rise, realize the effect on protecting against shock top, buffer spring can cushion the impact force of couple simultaneously, protection travel switch avoids it to receive the impact damage, the accident that the operator caused misoperation and dashes top because of environmental factor influences has been solved, the simple, practical and reliable of overall structure.

Furthermore, the lower end of the sleeve is in threaded connection with a cover plate, the cover plate limits the sliding block, and the cover plate is provided with a through hole for the ejector rod part to extend out.

Further, still include hoisting mechanism, hoisting mechanism sets up on the balance arm of tower crane, and this hoisting mechanism drives the couple oscilaltion, hoisting mechanism embeds there is the jack-up ac contactor coil.

The tower crane further comprises a luffing mechanism, wherein the luffing mechanism is arranged on a crane boom of the tower crane and drives the luffing trolley to move horizontally on the crane boom, and a luffing alternating current contactor coil is arranged in the luffing mechanism.

And the anti-top circuit consists of the travel switch, a lifting alternating current contactor coil, a variable amplitude alternating current contactor coil and a power supply.

Furthermore, a plurality of connecting rods extending in the horizontal direction are arranged on a crane boom of the tower crane at equal intervals along the length direction of the crane boom, the bottom surfaces of the connecting rods are jointly connected with a sliding groove, a plurality of suspension wire hooks are connected to the sliding groove in a sliding mode and used for hoisting cables of a power supply, and the suspension wire hook positioned at the tail end is connected with the amplitude-variable trolley through a pull rod. The utility model adopts the above structure after, the wiring problem has been solved, the in-process that makes the cable follow and become width of cloth dolly removal can not influence normal work because of the wiring problem, can carry out fast assembly to above-mentioned subassembly in step at the in-process of on-the-spot tower crane equipment simultaneously.

Furthermore, one end of the cable is connected with a power supply, and the other end of the cable is connected with the travel switch. The utility model adopts the above structure after, adopt slide-wire groove conveying cable, solved the travel switch wiring problem on the dolly, reach automatically controlled purpose.

Furthermore, the suspension wire hook is rotatably connected with at least one roller for rolling connection with the slide wire groove, and meanwhile, the bottom side of the suspension wire hook is connected with a first clamping piece which is connected with a second clamping piece through a screw for clamping the cable together. The utility model adopts the above structure after, realize hoist and mount cable.

Drawings

Fig. 1 is an overall structure diagram of the present invention (the structure of the connecting rod, the chute, the suspension wire hook, and the cable is not shown).

Fig. 2 is the utility model discloses a become width of cloth dolly and set up the structure chart on the tower crane.

Fig. 3 is a connection front view of the connecting rod, the sliding groove, the cable and the variable amplitude trolley of the utility model.

Fig. 4 is a side view of the connection between the connecting rod, the sliding groove, the cable and the variable amplitude trolley.

Fig. 5 is a connection diagram between the slide wire groove and the suspension wire hook of the present invention.

Fig. 6 is a structure view of the suspension wire hook of the present invention.

Fig. 7 is a top circuit diagram of the hook of the present invention.

The device comprises a variable-amplitude trolley 1, a travel switch 11, a buffer 2, a sleeve 21, a contact 22, a sliding block 23, a push rod 231, a buffer spring 24, a cover plate 25, a hook 3, a balance arm 4, a hoisting mechanism 41, a hoisting alternating current contactor coil 411, a variable-amplitude mechanism 42, a variable-amplitude alternating current contactor coil 421, a power supply 5, a cable 51, a crane boom 6, a connecting rod 61, a slide wire groove 62, a suspension wire hook 63, a roller 631, a first clamping piece 632, a second clamping piece 633 and a pull rod 64.

Detailed Description

The invention will be further described with reference to the following specific embodiments:

referring to the attached drawings 1 to 7, the tower crane hook anti-jacking device comprises a travel switch 11 and a buffer 2 which are arranged on a luffing trolley 1, wherein the travel switch 11, the buffer 2 and a hook 3 are sequentially arranged on the same vertical line from top to bottom, and after the hook 3 is contacted with the buffer 2, the buffer 2 triggers the travel switch 11 to stop the hook 3 from rising; the buffer 2 comprises a vertically extending sleeve 21, a contact 22 and a slide block 23 which are connected in the sleeve 21 in a sliding manner, the sleeve 21 is fixedly connected to the amplitude-variable trolley 1, the contact 22 is positioned above the slide block 23, a buffer spring 24 is connected between the contact 22 and the slide block 23, and a mandril part 231 protruding out of the sleeve 21 is formed on the lower side of the slide block 23; the lower end of the sleeve 21 is connected with a cover plate 25 in a threaded manner, the cover plate 25 limits the slide block 23, and the cover plate 25 is provided with a through hole for the ejector rod part 231 to extend out.

The crane boom 6 of the tower crane is provided with a plurality of connecting rods 61 extending in the horizontal direction, the connecting rods 61 are arranged at equal intervals along the length direction of the crane boom 6, meanwhile, the bottom surfaces of the connecting rods 61 are jointly connected with a sliding wire groove 62, a plurality of wire hanging hooks 63 are connected on the sliding wire groove 62 in a sliding manner and used for hoisting the cable 51 of the power supply 5, and the wire hanging hook 63 at the tail end is connected with the amplitude-variable trolley 1 through a pull rod 64; the cable 51 is two core wires, one end of each of the two core wires is connected with the travel switch 11, and the other end of each of the two core wires is connected with the power supply 5, the lifting alternating current contactor coil 411 and the variable amplitude alternating current contactor coil 421, wherein the lifting alternating current contactor coil 411 and the variable amplitude alternating current contactor coil 421 are connected in parallel; specifically, at least one roller 631 is rotatably connected to the wire hook 63 for rolling connection with the wire chute 62, and a first clamping member 632 is connected to the bottom side of the wire hook 63, and a second clamping member 633 is connected to the first clamping member 632 through screws for clamping the cable 51 together.

The tower crane further comprises a hoisting mechanism 41 and a luffing mechanism 42, wherein the hoisting mechanism 41 is arranged on the balance arm 4 of the tower crane, the hoisting mechanism 41 drives the hook 3 to lift, and a hoisting alternating current contactor coil 411 is arranged in the hoisting mechanism 41; the amplitude variation mechanism 42 is arranged on a crane boom 6 of the tower crane, the amplitude variation mechanism 42 drives the amplitude variation trolley 1 to move horizontally on the crane boom 6, and an amplitude variation alternating current contactor coil 421 is arranged in the amplitude variation mechanism 42.

In this embodiment, the circuit for controlling the operation of the travel switch is an anti-top circuit, and the anti-top circuit is composed of the travel switch 11, the lifting ac contactor coil 411, the variable amplitude ac contactor coil 421 and the power supply 5, where the travel switch 11 is in a normally closed state, and the travel switch 11, the lifting ac contactor coil 411 and the variable amplitude ac contactor coil 421 adopt interlocking control.

The concrete roof impact prevention principle of the embodiment is as follows: the hook 3 can be lifted along with the translation of the amplitude-variable trolley 1 or the working process of the hoisting mechanism, when the hook 3 is lifted to a set height, the hook 3 contacts and pushes the ejector rod part 231, if the hook 3 continues to move upwards, the hook 3 sequentially pushes the ejector rod part 231, the sliding block 23, the buffer spring 24 and the contact 22 to ascend, in the lifting process, the buffer spring 24 can buffer the impact of the hook 3 to prevent the travel switch 11 from being damaged by direct impact, after the hook 3 pushes the contact 22 to ascend and touch the travel switch 11, the travel switch 11 is opened to cut off the hoisting alternating current contactor coil 411 and the amplitude-variable alternating current contactor coil 421, so that the hoisting mechanism 41 and the amplitude-variable mechanism 42 stop working, the amplitude-variable trolley 1 and the hook 3 also stop moving, and thus the hook 3 is protected to realize anti-ejection.

Because the travel switch 11, the lifting alternating current contactor coil 411 and the variable amplitude alternating current contactor coil 421 adopt interlocking control, when the hook 3 descends, and the sleeve 21 leaves the travel switch 11, the travel switch 11 returns to a normally closed state, the lifting alternating current contactor coil 411 and the variable amplitude alternating current contactor coil 421 are electrified, and the variable amplitude trolley 1 and the hook 3 return to a normal working state.

When the wire hangers 63 approach each other, the cable 51 is in a folded state, because the luffing trolley 1 is connected with the wire hanger 63 at the extreme end through the pull rod 64, and the wire hangers 63 slide on the wire sliding grooves 62 respectively, in the process of translating the luffing trolley 1, the wire hanger 63 will also move along with the luffing trolley 1, and when the luffing trolley 1 translates to the extreme end of the jib 6, the cable 51 is in an opened state.

The above-described embodiments are merely preferred embodiments of the present invention, which are not intended to limit the present invention in any way. Those skilled in the art can make further changes and modifications to the invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention. Therefore, the content of the technical scheme of the utility model, according to the equivalent change made by the idea of the utility model, should be covered in the protection scope of the utility model.

Claims

1. The utility model provides a tower crane couple scour protection top-mounting is characterized in that: the device comprises a travel switch (11) and a buffer (2) which are arranged on a variable amplitude trolley (1), wherein the travel switch (11), the buffer (2) and a hook (3) are sequentially arranged on the same vertical line from top to bottom, and when the hook (3) is contacted with the buffer (2), the buffer (2) triggers the travel switch (11) to stop the hook (3) from rising; the buffer (2) comprises a vertically extending sleeve (21), and a contact (22) and a sliding block (23) which are connected in the sleeve (21) in a sliding manner, the sleeve (21) is fixedly connected to the amplitude-variable trolley (1), the contact (22) is positioned above the sliding block (23), a buffer spring (24) is connected between the contact (22) and the sliding block (23), and a mandril part (231) protruding out of the sleeve (21) is formed on the lower side of the sliding block (23).

2. The tower crane hook anti-ejection device according to claim 1, characterized in that: the lower end of the sleeve (21) is in threaded connection with a cover plate (25), the cover plate (25) limits the sliding block (23), and the cover plate (25) is provided with a through hole for the ejector rob part (231) to extend out.

3. The tower crane hook anti-ejection device according to claim 1, characterized in that: still include hoisting mechanism (41), hoisting mechanism (41) set up on balance arm (4) of tower crane, and this hoisting mechanism (41) drive couple (3) and go up and down, hoisting mechanism (41) embeds there is jack-up ac contactor coil (411).

4. The tower crane hook anti-ejection device according to claim 3, characterized in that: the tower crane is characterized by further comprising a luffing mechanism (42), wherein the luffing mechanism (42) is arranged on a crane arm (6) of the tower crane, the luffing mechanism (42) drives the luffing trolley (1) to move back and forth on the crane arm (6), and a luffing alternating current contactor coil (421) is arranged in the luffing mechanism (42).

5. The tower crane hook anti-ejection device according to claim 4, characterized in that: the anti-top-collision circuit is composed of the travel switch (11), a lifting alternating current contactor coil (411), a variable amplitude alternating current contactor coil (421) and a power supply (5).

6. The tower crane hook anti-ejection device according to claim 4, characterized in that: a plurality of connecting rods (61) extending in the horizontal direction are arranged on a crane arm (6) of the tower crane, the connecting rods (61) are arranged at equal intervals along the length direction of the crane arm (6), meanwhile, the bottom surfaces of the connecting rods (61) are jointly connected with a sliding groove (62), a plurality of wire hanging hooks (63) are connected onto the sliding groove (62) in a sliding mode and used for hoisting cables (51) of a power supply (5), and the wire hanging hook (63) located at the tail end is connected with the amplitude-variable trolley (1) through a pull rod (64).

7. The tower crane hook anti-ejection device according to claim 6, characterized in that: one end of the cable (51) is connected with the power supply (5), and the other end of the cable is connected with the travel switch (11).

8. The tower crane hook anti-ejection device according to claim 6, characterized in that: at least one roller (631) is connected to the suspension wire hook (63) in a rotating mode and is used for being in rolling connection with the sliding groove (62), meanwhile, a first clamping piece (632) is connected to the bottom side of the suspension wire hook (63), and the first clamping piece (632) is connected with a second clamping piece (633) through screws and is used for clamping the cable (51) together.