CN214192235U

CN214192235U - Mechanical arm of crane

Info

Publication number: CN214192235U
Application number: CN202022323233.9U
Authority: CN
Inventors: 王杰
Original assignee: Taicang Hengqi Mechanical Equipment Co ltd
Current assignee: Taicang Hengqi Mechanical Equipment Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-09-14
Anticipated expiration: 2030-10-19

Abstract

The utility model discloses a hoist arm relates to arm technical field, including the hoist engine, the last fixed surface of hoist engine is connected with the workstation, the last fixed surface of workstation is connected with the hoist wall, the right side swing joint of hoist wall bottom surface has the hoisting rope, the bottom surface fixedly connected with fixed block of hoisting rope, the bottom surface fixedly connected with lifting hook of fixed block, first square groove has been seted up to the cross-section on lifting hook upper portion, the second square groove has been seted up to the cross-section of lifting hook lower part. This hoist arm can make spacing hook receive spring thrust through first spring, and the joint is more stable, can effectively avoid spacing hook dead condition of card to appear through first slider and first spout, can effectively strengthen the pothook through the second spring and make the joint to spacing hook more stable to spacing hook's joint power, can effectively reduce the condition that the trapezoidal piece appears blocking through second slider and second spout.

Description

Mechanical arm of crane

Technical Field

The utility model relates to an arm technical field specifically is a crane arm.

Background

The crane mechanical arm is commonly called as an arm support and a suspension arm, supports a lifting rope, a fetching device or a metal structural part bent in two directions of a variable amplitude trolley, and is supported on a rotary table or a tower body of the crane by a connecting pin shaft, a steel wire rope or a hydraulic cylinder. For the cargo boom which can swing in a pitching way, the inclination angle of the cargo boom is changed by the amplitude changing mechanism so as to change the amplitude and the lifting height of the crane, and the horizontal cargo boom changes the amplitude by the amplitude changing trolley moving back and forth on the horizontal cargo boom. The crane boom is divided into a truss boom and a box boom according to different structures, and is divided into a crane boom, a main boom, an auxiliary boom, a telescopic boom, a folding boom, a goose head frame and the like according to different functions.

At present, a hook is only arranged on a lifting hook on most mechanical arms of the crane, the structure can be normally used under a stable condition, but once the unstable condition occurs, for example, the machine shakes when running due to the damage of certain parts of the machine, or when the machine works under the windy weather, or when the machine is improperly operated by operators, the lifted goods can be unhooked, the goods are damaged, and passersby can be injured seriously.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a crane arm has solved and has appeared inside or the external condition because of the hoist and rock and make the goods unhook cause the goods to damage or passerby injured problem.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a crane arm, includes the crane locomotive, the last fixed surface of crane locomotive is connected with the workstation, the last fixed surface of workstation is connected with the crane wall, the right side swing joint of crane wall bottom surface has the jack-up rope, the bottom surface fixedly connected with fixed block of jack-up rope, the bottom surface fixedly connected with lifting hook of fixed block, first square groove has been seted up to the cross-section on lifting hook upper portion, the second square groove has been seted up to the cross-section of lifting hook lower part, two symmetrical first spouts have been seted up to the inside wall in first square groove.

As the further description of the technical scheme, the limiting hook is placed inside the first square groove, the outer surface of the limiting hook is fixedly connected with the first sliding block matched with the first sliding groove, the first sliding block is clamped inside the first sliding groove, and the first sliding block and the first sliding groove are clamped to reduce the friction force of the limiting hook in sliding, so that the limiting hook slides smoothly.

As a further description of the above technical solution, the cross section of the lower portion of the limit hook is fixedly connected with a first spring, the other end of the first spring is fixedly connected with the inner side wall of the first square groove, and the first spring is always in a compressed state, so that the limit hook can always receive the thrust of the first spring when in operation, and the limit is more stable.

As the further description of the technical scheme, the outer surface of the limiting hook is fixedly connected with the push block, the push block is located outside the first square groove, the third sliding groove matched with the first sliding block is formed in the inner side wall of the second square groove, the push block can enable the limiting hook to be pushed back into the first square groove more conveniently when the limiting hook does not work, and the third sliding groove and the first sliding block are matched to enable the clamping process of the limiting hook to be smoother.

As a further description of the above technical solution, the inner side wall of the lifting hook is provided with a third square groove, the outer surface of the limit hook is provided with a fourth square groove, and the fourth square groove is located above the third square groove when not in operation, so that the hook can be accurately clamped inside the third square groove when not in operation.

As a further description of the above technical scheme, a fifth square groove has been seted up to the inside wall of lifting hook, two symmetrical second spouts have been seted up to the inside wall in fifth square groove, trapezoidal piece has been placed to the inside in fifth square groove, the outer fixed surface of trapezoidal piece is connected with the second slider with second spout looks adaptation, and the inside of second slider joint at the second spout, and the both sides face of trapezoidal piece is the inclined plane and makes the rope that the hook got up can not block the both sides at trapezoidal piece, guarantees that the mechanism normally works, and second slider and second spout looks joint have reduced the gliding frictional force of trapezoidal piece for the slip of trapezoidal piece is more smooth and easy.

As a further description of the above technical solution, the back surface of the trapezoidal block is fixedly connected with a hook, the hook portion of the hook is clamped inside the fourth square groove, the bottom of the hook is fixedly connected with a second spring, the lower end of the second spring is fixedly connected with the inner bottom wall of the third square groove, the second spring is in a compressed state when the hook is clamped in the third square groove, and it can be ensured that the hook always has a spring thrust, so that the clamping is stable.

Compared with the prior art, the utility model discloses possess following beneficial effect:

the utility model discloses a first spring can make spacing hook receive spring thrust, the joint is more stable, can effectively avoid spacing hook to appear blocking dead circumstances through first slider and first spout, can effectively strengthen the pothook through the second spring and make the joint to spacing hook more stable to the joint power of spacing hook, can effectively reduce the trapezoidal piece condition that blocks and pause through second slider and second spout, through being provided with spacing hook in the inside of lifting hook, and first spring, the trapezoidal piece, the pothook, the cooperation setting between second spring and the ejector pad, make spacing hook when using, the rope of being hung pushes down the trapezoidal piece, and then drive the pothook and overcome the spring force of second spring, smooth-going downward movement under the effect of second slider and second spout, make the pothook break away from the third square groove, at this moment, first spring promotes spacing hook, and at first spout, Smooth-going joint is in the inside of the square groove of second under the effect of third spout and first slider, and the rope that is about to hook up seals the inside at a ring, even rock and also can not make the goods unhook drop appear in the hoist, reached and sealed the rope of goods, even rock the effect that also can not unhook, solved current because of the hoist appears inside or outside problem rock make the goods unhook lead to the fact the goods to damage or passerby injured's the condition.

Drawings

Fig. 1 is a perspective view of a front view of a crane vehicle according to the present invention;

fig. 2 is a cross-sectional view of a front view of the lifting hook of the present invention;

fig. 3 is a cross-sectional view of the right side view of the lifting hook of the present invention;

fig. 4 is an enlarged schematic view of a structure shown in fig. 1 according to the present invention.

In the figure: 1. a crane vehicle; 2. a work table; 3. a crane wall; 4. a hoisting rope; 5. a fixed block; 6. a lifting hook; 7. a first square groove; 8. a limiting hook; 9. a trapezoidal block; 10. a fifth square groove; 11. a fourth square groove; 12. a third square groove; 13. a second spring; 14. a hook; 15. a first spring; 16. a second square groove; 17. a third chute; 18. a push block; 19. a first chute; 20. a first slider; 21. a second slider; 22. a second runner.

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. 1-4, the present invention provides a technical solution: a crane mechanical arm comprises a crane locomotive 1, wherein the upper surface of the crane locomotive 1 is fixedly connected with a workbench 2, the upper surface of the workbench 2 is fixedly connected with a crane wall 3, the right side of the bottom surface of the crane wall 3 is movably connected with a crane rope 4, the bottom surface of the crane rope 4 is fixedly connected with a fixed block 5, the bottom surface of the fixed block 5 is fixedly connected with a crane hook 6, the cross section of the upper part of the crane hook 6 is provided with a first square groove 7, the cross section of the lower part of the crane hook 6 is provided with a second square groove 16, the inner side wall of the first square groove 7 is provided with two symmetrical first sliding grooves 19, a limiting hook 8 is arranged inside the first square groove 7, the outer surface of the limiting hook 8 is fixedly connected with a first sliding block 20 matched with the first sliding grooves 19, the first sliding block 20 is clamped inside the first sliding grooves 19, the first sliding block 20 and the first sliding grooves 19 are clamped to reduce the sliding friction force of the limiting hook 8, so that the sliding of the limit hook 8 is smoother, the cross section of the lower part of the limit hook 8 is fixedly connected with a first spring 15, the other end of the first spring 15 is fixedly connected with the inner side wall of the first square groove 7, the first spring 15 is always in a compression state, so that the limit hook 8 can always receive the thrust of the first spring 15 when in work, so that the limit is more stable, the outer surface of the limit hook 8 is fixedly connected with a push block 18, the push block 18 is positioned outside the first square groove 7, the push block 18 can more conveniently push the limit hook 8 back to the first square groove 7 when not in work, the inner side wall of the second square groove 16 is provided with a third sliding groove 17 matched with the first sliding block 20, the third sliding groove 17 is matched with the first sliding block 20, so that the clamping process of the limit hook 8 is smoother, the inner side wall of the lifting hook 6 is provided with a third square groove 12, the outer surface of the limit hook 8 is provided with a fourth square groove 11, the fourth square groove 11 is positioned above the third square groove 12 when not working, the hook 14 can be accurately clamped in the third square groove 12 when not working, the inner side wall of the lifting hook 6 is provided with a fifth square groove 10, the inner side wall of the fifth square groove 10 is provided with two symmetrical second sliding grooves 22, the trapezoid block 9 is arranged in the fifth square groove 10, the two side surfaces of the trapezoid block 9 are inclined surfaces, so that the hooked rope cannot be clamped on the two sides of the trapezoid block 9, the normal work of the mechanism is ensured, the outer surface of the trapezoid block 9 is fixedly connected with a second sliding block 21 matched with the second sliding grooves 22, the second sliding block 21 is clamped in the second sliding grooves 22, the second sliding block 21 and the second sliding grooves 22 are clamped to reduce the sliding friction force of the trapezoid block 9, the trapezoid block 9 slides more smoothly, the back of the trapezoid block 9 is fixedly connected with the hook 14, and the hook portion joint of pothook 14 is in the inside of fourth square groove 11, and the bottom fixedly connected with second spring 13 of pothook 14, the lower extreme of second spring 13 and the interior diapire fixed connection of third square groove 12, second spring 13 is in compression state when pothook 14 joint is in third square groove 12, can guarantee that pothook 14 has a spring thrust always for the joint is stable.

The working principle is as follows: when the lifting rope is used, firstly, a rope of a cargo is hung on the lifting hook 6, then the lifting rope 4 is lifted upwards, the lifting rope 4 drives the lifting hook 6 to move upwards through the fixing block 5, then the cargo is lifted, at the moment, the cargo presses the trapezoidal block 9 downwards through self gravity, both side surfaces of the trapezoidal block 9 are inclined surfaces, so that the hooked rope cannot be clamped on both sides of the trapezoidal block 9, the normal work of the mechanism is ensured, the trapezoidal block 9 moves downwards to drive the clamping hook 14 and overcome the spring force of the second spring 13, the clamping hook 14 smoothly moves downwards under the action of the second sliding block 21 and the second sliding block 22, so that the clamping hook 14 is separated from the third square groove 12, at the moment, the first spring 15 pushes the limiting hook 8 and is smoothly clamped in the second square groove 16 under the action of the first sliding groove 19, the third sliding groove 17 and the first sliding block 20, namely, the hooked rope is sealed in a circular ring, even the hoist appears rocking and also can not make the goods unhook drop, when taking off the goods, trapezoidal piece 9 is because of having removed decurrent pressure and through the spring force rebound of second spring 13 this moment, need exert a decurrent pressure to trapezoidal piece 9 this moment, guarantee pothook 14 can not block spacing hook 8's removal, then rethread external force promotes ejector pad 18 and overcomes first spring 15's spring force, make spacing hook 8 smooth-going slide in first square groove 7 under first slider 20 and first spout 19's effect, when third square groove 12 is located the top of fourth square groove 11, remove the external force on trapezoidal piece 9, at this moment, second spring 13 upwards pushes away pothook 14, make the stable joint of pothook 14 can in the inside of third square groove 12.

Claims

1. A crane arm, comprising a crane vehicle (1), characterized in that: the crane is characterized in that the upper surface of the crane (1) is fixedly connected with a workbench (2), the upper surface of the workbench (2) is fixedly connected with a crane wall (3), the right side of the bottom surface of the crane wall (3) is movably connected with a crane rope (4), the bottom surface of the crane rope (4) is fixedly connected with a fixed block (5), the bottom surface of the fixed block (5) is fixedly connected with a crane hook (6), a first square groove (7) is formed in the cross section of the upper portion of the crane hook (6), a second square groove (16) is formed in the cross section of the lower portion of the crane hook (6), and two symmetrical first sliding grooves (19) are formed in the inner side wall of the first square groove (7).

2. A crane arm as claimed in claim 1, wherein: spacing hook (8) have been placed to the inside of first square groove (7), the surface fixed connection of spacing hook (8) has first slider (20) with first spout (19) looks adaptation, and first slider (20) joint is in the inside of first spout (19).

3. A crane arm as claimed in claim 2, wherein: the cross-section fixedly connected with first spring (15) of spacing hook (8) lower part, the other end and the inside wall fixed connection in first square groove (7) of first spring (15).

4. A crane arm as claimed in claim 2, wherein: the outer fixed surface of spacing hook (8) is connected with ejector pad (18), and ejector pad (18) are located the outside of first square groove (7), third spout (17) with first slider (20) looks adaptation are seted up to the inside wall in second square groove (16).

5. A crane arm as claimed in claim 2, wherein: third square groove (12) have been seted up to the inside wall of jack-up hook (6), fourth square groove (11) have been seted up to the surface of spacing hook (8), and fourth square groove (11) are located the top of third square groove (12) when out of work.

6. A crane arm as claimed in claim 5, wherein: fifth square groove (10) have been seted up to the inside wall of jack-up hook (6), two symmetrical second spout (22) have been seted up to the inside wall in fifth square groove (10), trapezoidal piece (9) have been placed to the inside in fifth square groove (10), the outer fixed surface of trapezoidal piece (9) is connected with second slider (21) with second spout (22) looks adaptation, and second slider (21) joint is in the inside of second spout (22).

7. A crane arm as claimed in claim 6, wherein: the back fixedly connected with pothook (14) of trapezoidal piece (9), and the hook portion joint of pothook (14) is in the inside of fourth square groove (11), the bottom fixedly connected with second spring (13) of pothook (14), the lower extreme and the interior diapire fixed connection of third square groove (12) of second spring (13).