CN220976282U - Auxiliary hook force unloading structure of platform crane - Google Patents

Abstract

The invention discloses a platform crane auxiliary hook force unloading structure, which comprises a lifting hook body, wherein the lifting hook body comprises a hook part, a first vertical part and a second vertical part, the first vertical part and the second vertical part are respectively welded and fixed at two ends of the hook part, the first vertical part is provided with two, and is respectively arranged at the front side and the rear side of one end of the hook part, and the top ends of the two first vertical parts are jointly welded and fixed with an abutting plate. This platform loop wheel machine is assisted hook and is unloaded power structure sets up through the cooperation of butt plate, arc backing plate, threaded rod, linkage board, reinforcement lead screw, limiting plate and first spring, after the platy hoist and mount thing is arranged in crotch portion, and the lifting hook body rises, can remove through arc backing plate extrusion linkage board, and then extrudees first spring, utilizes first spring to realize unloading the purpose of power, effectively avoids lifting hook body to the platy hoist and mount thing striking damage condition.

Description

Auxiliary hook force unloading structure of platform crane

Technical Field

The invention relates to the technical field of lifting hooks, in particular to a platform crane auxiliary hook force unloading structure.

Background

The auxiliary hook of the crane is also called auxiliary hook, is used for assisting in lifting heavy objects on lifting machinery, is usually composed of a hook body, a hook tongue, a hook body, a hook foot and the like, and has the main effect of assisting in lifting heavy objects, in actual use, the auxiliary hook of the crane can help a driver to better control heavy objects in the lifting process so as to ensure the safety and stability of lifting, and for the crane, the main hook is mainly used as a lifting hook, and is generally larger in multiplying power, slow in lifting, the main hook is mainly used as a main hook in large work, the auxiliary hook is auxiliary, is small in lifting hook, small in multiplying power, is used when the general lifting weight is lighter, can be rapidly lifted, and can be used in cooperation with the main hook in work.

The conventional auxiliary hook is fixed in space in the hook, the plate is usually bound when being hoisted, then the auxiliary hook is used for hoisting, the use is inconvenient, the conventional auxiliary hook is lack of a force unloading assembly in the hoisting process, and the auxiliary hook is directly lifted to easily cause impact damage to a hoisted object.

Disclosure of Invention

(One) solving the technical problems

Aiming at the defects of the prior art, the invention provides a force unloading structure of an auxiliary hook of a platform crane, which solves the problems that the space in a conventional auxiliary hook is fixed, the use is inconvenient when the plate is hoisted, a force unloading component is lacking in the conventional auxiliary hook in the hoisting process, and the auxiliary hook is easy to impact and damage a hoisted object when being directly lifted.

(II) technical scheme

In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a platform loop wheel machine auxiliary hook unloads power structure, includes the lifting hook body, the lifting hook body includes crotch portion, first vertical portion and second vertical portion do not welded fastening are at the both ends of crotch portion, first vertical portion is provided with two, and set up respectively in the front and back both sides of crotch portion one end, two the common welded fastening in top of first vertical portion has the butt plate, the left side of butt plate bottom is installed through the bearing rotation and is consolidated the lead screw, the inside of crotch portion runs through and is provided with the threaded rod, the top fixedly connected with arc backing plate of threaded rod, and the extrados of arc backing plate and the intrados looks adaptation of crotch portion, the periphery cover of consolidate the lead screw is established and slidable mounting has the linkage board with threaded rod looks adaptation, and consolidates the bottom fixedly connected with limiting plate of lead screw, the periphery cover of consolidate the lead screw is equipped with first spring, the both ends of first spring contact with one side that limiting plate and limiting plate are relative respectively.

The invention is further provided with: the threaded rod penetrates through the linkage plate, two fastening nuts are sleeved on the outer surface of the threaded rod and are in threaded connection with the threaded rod, and the two fastening nuts are respectively arranged on the upper side and the lower side of the linkage plate.

The invention is further provided with: the top of linkage board just is located the equal fixedly connected with auxiliary positioning piece of left and right sides of threaded rod, the top of auxiliary positioning piece sets up to the arcwall face with crotch extrados looks adaptation.

The invention is further provided with: lifting lugs are fixedly mounted on the front side and the rear side of the top of the butt joint plate, and an inclined reinforcing plate is fixedly connected between the right side of the bottom of the butt joint plate and one side of the two first vertical parts.

The invention is further provided with: one end fixedly connected with fixed lead screw of crotch portion, fixed lead screw sets up between two first vertical portions, fixed lead screw's top and the bottom fixed connection of butt joint board, the adjusting nut is established and threaded connection to the periphery cover of fixed lead screw, the periphery cover of fixed lead screw is equipped with the second spring, two first vertical portion, fixed lead screw and the periphery of strengthening the lead screw are overlapped jointly and are established and slidable mounting has the clamp plate, the both ends of second spring contact with one side that adjusting nut and clamp plate are relative respectively.

The invention is further provided with: the top of first vertical portion has seted up first removal hole, the second removes the hole around the vertical portion top of second both sides all has been seted up, the inside of crotch portion and the third that is located the threaded rod around both sides all have been seted up with first removal hole and second removal hole intercommunication remove the hole.

The invention is further provided with: the inside slidable mounting in first removal hole has the regulation post, the inside slidable mounting in second removal hole has the extension post, dock through a plurality of section universal joints between regulation post and the extension post, and a plurality of section universal joints and the cooperation of third removal hole use, the extension post runs through the clamp plate setting.

The invention is further provided with: the periphery cover of consolidate the lead screw is established and threaded connection has the mobile station, the mobile station sets up in the top of clamp plate, two the opposite side of first vertical portion all offered the vertical groove with first removal hole intercommunication, the slider with vertical groove looks adaptation is all fixed mounting in both sides around the mobile station right side, and the right side of slider and the fixed surface of adjusting the post are connected.

The invention is further provided with: the periphery of the reinforcing screw rod is sleeved with and fixedly provided with a knob, and the knob is arranged between the pressing plate and the linkage plate.

The invention also discloses a method for assisting the hook to unload force of the platform crane, which comprises the following steps:

step one, assembling: after a lifting rope of the platform crane passes through the two lifting lugs and is fixed, the auxiliary hook assembly is completed;

Step two, adjusting: when the accommodating space of the hook part needs to be adjusted, the height of the expansion column is adjusted, the knob is rotated, the knob drives the reinforcing screw rod to rotate, the reinforcing screw rod drives the moving table to move, the moving table drives the sliding block to enable the adjustment column to move, the adjustment column drives the expansion column to move through a plurality of universal joints, and the knob is stopped rotating after the expansion column moves to the needed height;

Step three, locking and adjusting: rotating the adjusting nut to enable the adjusting nut to move on the reinforcing screw rod until the pressing plate can move upwards to be separated from the expansion column, and stopping rotating the adjusting nut when the plate-shaped hoisting object is inserted into the hook part;

Step four, hoisting: the clamp plate is pulled upwards, and the clamp plate extrudes the second spring, and the in-process penetrates platy hoist and mount thing between clamp plate and crotch until platy hoist and mount thing is arranged in crotch, loosens the clamp plate, and the second spring extends and promotes the clamp plate cover on the extension post, and platform loop wheel machine pulling lifting rope makes lifting hook body rise in-process, waits hoist and mount thing extrusion arc backing plate, and arc backing plate drives the threaded rod and descends, and the threaded rod drives fastening nut and makes the linkage board descend, and the linkage board extrudes first spring, carries out the hanging loading and unloading power.

(III) beneficial effects

The invention provides a force unloading structure of an auxiliary hook of a platform crane. The beneficial effects are as follows:

(1) According to the invention, through the matching arrangement of the butt joint plate, the arc-shaped base plate, the threaded rod, the linkage plate, the reinforcing screw rod, the limiting plate and the first spring, after the plate-shaped hoisted object is placed in the hook part, the lifting hook body rises, the linkage plate can be extruded to move through the arc-shaped base plate, the first spring is extruded, the purpose of unloading force is realized by utilizing the first spring, and the condition that the lifting hook body impacts and damages the plate-shaped hoisted object is effectively avoided.

(2) According to the invention, through the arrangement of the two fastening nuts, the connection stability between the threaded rod and the linkage plate is ensured, and meanwhile, the convenient separation between the threaded rod and the linkage plate is ensured, so that the arc-shaped backing plate can be replaced conveniently after being worn.

(3) According to the lifting adjusting device, through the cooperation arrangement of the reinforcing screw rod, the knob, the moving table, the sliding block, the vertical groove, the first moving hole, the second moving hole, the third moving hole, the adjusting column, the expansion column and the universal joint, lifting adjustment of the expansion column can be achieved only by rotating the knob, and further adjustment of the containing space of the hook part is achieved, so that convenience is brought to lifting of plate-shaped lifting objects.

(4) According to the invention, through the arrangement of the fixed screw rod, the adjusting nut, the second spring and the pressing plate, the effective blocking of the space of the hook part is realized, the force unloading buffer of the hoisted object can be realized under the arrangement of the second spring while the hoisted object is prevented from suddenly falling off, and the safety of the hoisted object in the hoisting process is further ensured.

Drawings

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

FIG. 2 is a schematic view of the structures of the first moving hole, the second moving hole and the third moving hole according to the present invention;

FIG. 3 is a schematic diagram showing the connection of the hook portion and the fixed screw structure of the present invention;

FIG. 4 is a right side view of the structure of the present invention;

FIG. 5 is a left side view of the structure of the present invention;

In the figure, 1, a lifting hook body; 2. a hook portion; 3. a first vertical portion; 4. a second vertical portion; 5. an abutting plate; 6. reinforcing a screw rod; 7. a threaded rod; 8. an arc-shaped backing plate; 9. a linkage plate; 10. a limiting plate; 11. a first spring; 12. fastening a screw cap; 13. an auxiliary positioning block; 14. lifting lugs; 15. tilting the reinforcing plate; 16. fixing a screw rod; 17. an adjusting nut; 18. a second spring; 19. a pressing plate; 20. a first moving hole; 21. a second moving hole; 22. a third moving hole; 23. an adjusting column; 24. an expansion column; 25. a universal joint; 26. a mobile station; 27. a vertical slot; 28. a slide block; 29. and (5) a knob.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-5, the following two technical schemes are provided in the embodiments of the present invention:

Embodiment 1,

The auxiliary hook force unloading structure of the platform crane comprises a lifting hook body 1 composed of a hook part 2, two first vertical parts 3 and a second vertical part 4, wherein the first vertical parts 3 and the second vertical parts 4 are respectively welded and fixed at two ends of the hook part 2, and the two first vertical parts 3 are respectively arranged at front and rear sides of one end of the hook part 2.

As a preferred scheme, for convenient hoist and mount to guarantee the intensity of structure, the joint board 5 is welded together on the top of two first vertical portions 3, and the front and back both sides at joint board 5 top are all fixed mounting has lug 14, fixedly connected with slope reinforcing plate 15 between the right side of joint board 5 bottom and one side of two first vertical portions 3.

As the preferred scheme, in order to realize the unloading buffering to the hoist and mount thing, the left side of butt joint board 5 bottom is rotated through the bearing and is installed reinforcing screw rod 6, the inside of crotch portion 2 runs through and is provided with threaded rod 7, the top fixedly connected with arc backing plate 8 of threaded rod 7, and the extrados of arc backing plate 8 and the intrados looks adaptation of crotch portion 2, reinforcing screw rod 6's periphery cover is established and slidable mounting has the linkage board 9 with threaded rod 7 looks adaptation, and reinforcing screw rod 6's bottom fixedly connected with limiting plate 10, reinforcing screw rod 6's periphery cover is equipped with first spring 11, the both ends of first spring 11 contact with the opposite one side of limiting plate 10 and linkage board 9 respectively.

To describe in detail, in order to achieve convenient separation between the threaded rod 7 and the linkage plate 9, the threaded rod 7 is disposed through the linkage plate 9, two fastening nuts 12 are sleeved and screwed on the outer surface of the threaded rod 7, and the two fastening nuts 12 are disposed on the upper and lower sides of the linkage plate 9 respectively.

As a preferable scheme, in order to ensure the stability of the position of the linkage plate 9 and improve the structural reinforcement of the hook part 2, the top of the linkage plate 9 and the left and right sides of the threaded rod 7 are fixedly connected with auxiliary positioning blocks 13, and the top of each auxiliary positioning block 13 is provided with an arc surface matched with the outer arc surface of the hook part 2.

As a preferred scheme, in order to ensure that the hoisted object cannot easily separate from the lifting hook body 1 in the hoisting process, one end of the hook part 2 is fixedly connected with a fixed screw rod 16, the fixed screw rod 16 is arranged between the two first vertical parts 3, the top end of the fixed screw rod 16 is fixedly connected with the bottom of the butt plate 5, the periphery of the fixed screw rod 16 is sleeved with an adjusting nut 17 in threaded connection, the periphery of the fixed screw rod 16 is sleeved with a second spring 18, the peripheries of the two first vertical parts 3, the fixed screw rod 16 and the reinforcing screw rod 6 are sleeved with a pressing plate 19 in a sliding manner, and two ends of the second spring 18 are respectively contacted with one side opposite to the adjusting nut 17 and the pressing plate 19.

In this embodiment, not only can realize the unloading buffering to the hoist and mount thing in hoist and mount in-process, can also reach the purpose that prevents hoist and mount thing and lifting hook body 1 separation easily in hoist and mount in-process.

Embodiment II,

The improvement of this embodiment as last embodiment, the auxiliary hook of platform crane unloads the power structure, still include the first removal hole 20 of seting up at the top of first vertical portion 3, the inside slidable mounting of first removal hole 20 has regulation post 23, the second removal hole 21 has all been seted up to the front and back both sides at the top of second vertical portion 4, the inside slidable mounting of second removal hole 21 has extension post 24, extension post 24 runs through clamp plate 19 setting, the inside of crotch portion 2 just is located the front and back both sides of threaded rod 7 all seting up with the third removal hole 22 of first removal hole 20 and second removal hole 21 intercommunication, dock through a plurality of universal joints 25 between regulation post 23 and the extension post 24, and a plurality of universal joints 25 cooperate the use with third removal hole 22.

As a preferred scheme, in order to realize convenient adjustment of extension post 24 height, the periphery cover of reinforcement lead screw 6 is established and threaded connection has movable platform 26, and movable platform 26 sets up in the top of clamp plate 19, and the vertical groove 27 with first removal hole 20 intercommunication has all been seted up to the opposite side of two first vertical portions 3, and the slider 28 with vertical groove 27 looks adaptation is all fixed mounting to the front and back both sides on movable platform 26 right side, and the right side and the fixed surface connection of adjusting post 23 of slider 28.

As a preferable scheme, in order to realize convenient rotation driving of the reinforcing screw rod 6, a knob 29 is sleeved and fixedly installed on the periphery of the reinforcing screw rod 6, and the knob 29 is arranged between the pressing plate 19 and the linkage plate 9.

The advantages of the embodiment over the first embodiment are: through the regulation to expansion post 24 height, guarantee the space that encloses between crotch portion 2, first vertical portion 3, the vertical portion 4 of second and the clamp plate 19, when clamp plate 19 carries out the altitude mixture control, the condition that the gap appears between clamp plate 19 and the vertical portion 4 of second and leads to the hoist and mount thing to drop easily can not appear, realizes the packing to the gap between clamp plate 19 and the vertical portion 4 of second promptly under the altitude mixture control of expansion post 24, guarantees the effective adjustment in space in the hook of lifting hook body 1.

The auxiliary hook force unloading method of the platform crane specifically comprises the following steps:

step one, assembling: after the lifting rope of the platform crane passes through the two lifting lugs 14 and is fixed, the auxiliary hook assembly is completed;

Step two, adjusting: when the accommodating space of the hook part 2 needs to be adjusted, the height of the expansion column 24 is adjusted, the knob 29 is rotated, the knob 29 drives the reinforcing screw rod 6 to rotate, the reinforcing screw rod 6 drives the moving table 26 to move, the moving table 26 drives the sliding block 28 to move the adjustment column 23, the adjustment column 23 drives the expansion column 24 to move through the universal joints 25, and the knob 29 is stopped rotating after the expansion column 24 moves to the required height;

Step three, locking and adjusting: rotating the adjusting nut 17 to enable the adjusting nut 17 to move on the reinforcing screw rod 6 until the pressing plate 19 can move upwards to be separated from the expansion column 24, and stopping rotating the adjusting nut 17 when the plate-shaped hoisting object can be inserted into the hook part 2;

Step four, hoisting: the pressing plate 19 is pulled upwards, the pressing plate 19 extrudes the second spring 18, in the process, the plate-shaped hoisted object penetrates between the pressing plate 19 and the hook part 2 until the plate-shaped hoisted object is placed in the hook part 2, the pressing plate 19 is loosened, the second spring 18 stretches and pushes the pressing plate 19 to be sleeved on the expansion column 24, the platform crane pulls the lifting rope to enable the lifting hook body 1 to ascend, the hoisted object to be hoisted extrudes the arc-shaped base plate 8, the arc-shaped base plate 8 drives the threaded rod 7 to descend, the threaded rod 7 drives the fastening nut 12 to enable the linkage plate 9 to descend, and the linkage plate 9 extrudes the first spring 11 to carry out hoisting and unloading force.

Claims (9)

1. The utility model provides a force structure is unloaded to auxiliary hook of platform loop wheel machine, includes lifting hook body (1), its characterized in that: the lifting hook body (1) comprises a hook portion (2), a first vertical portion (3) and a second vertical portion (4), the first vertical portion (3) and the second vertical portion (4) are welded and fixed at two ends of the hook portion (2) respectively, the first vertical portion (3) is provided with two, and is arranged at front and back sides of one end of the hook portion (2) respectively, two the top common welding of the first vertical portion (3) is fixed with an abutting plate (5), the left side of the bottom of the abutting plate (5) is provided with a reinforcing screw rod (6) through bearing rotation, the inside of the hook portion (2) is penetrated and is provided with a linkage screw rod (7), the top fixedly connected with an arc-shaped base plate (8) of the screw rod (7), the outer arc-shaped surface of the arc-shaped base plate (8) is matched with the inner arc-shaped surface of the hook portion (2), the periphery of the reinforcing screw rod (6) is sleeved with a plate (9) matched with the screw rod (7) respectively, and the bottom of the reinforcing screw rod (6) is fixedly connected with a reinforcing plate (10), and the periphery of the first spring (10) is provided with a linkage screw rod (10) and one side of the first spring (11) is contacted with the first side of the corresponding linkage screw rod (11).

2. The platform lift auxiliary hook force unloading structure according to claim 1, wherein: the threaded rod (7) penetrates through the linkage plate (9), two fastening nuts (12) are sleeved on the outer surface of the threaded rod (7) and are in threaded connection with the threaded rod, and the two fastening nuts (12) are respectively arranged on the upper side and the lower side of the linkage plate (9).

3. The platform crane auxiliary hook force unloading structure according to claim 2, wherein: the top of linkage board (9) and be located the left and right sides of threaded rod (7) all fixedly connected with auxiliary positioning piece (13), the top of auxiliary positioning piece (13) sets up to the arcwall face with crotch portion (2) extrados looks adaptation.

4. The platform lift auxiliary hook force unloading structure according to claim 1, wherein: lifting lugs (14) are fixedly mounted on the front side and the rear side of the top of the butt joint plate (5), and an inclined reinforcing plate (15) is fixedly connected between the right side of the bottom of the butt joint plate (5) and one side of the two first vertical parts (3).

5. The platform lift auxiliary hook force unloading structure according to claim 1, wherein: the one end fixedly connected with fixed lead screw (16) of crotch portion (2), fixed lead screw (16) set up between two first vertical portions (3), the top of fixed lead screw (16) is with the bottom fixed connection of butt joint board (5), the periphery cover of fixed lead screw (16) is established and threaded connection has adjusting nut (17), the periphery cover of fixed lead screw (16) is equipped with second spring (18), two the periphery of first vertical portion (3), fixed lead screw (16) and reinforcing lead screw (6) overlaps jointly and establishes and slidable mounting has clamp plate (19), the both ends of second spring (18) are contacted with one side that adjusting nut (17) are relative with clamp plate (19) respectively.

6. The platform lift auxiliary hook force unloading structure according to claim 5, wherein: the top of first vertical portion (3) has seted up first removal hole (20), second removal hole (21) have all been seted up to the front and back both sides at the top of second vertical portion (4), third removal hole (22) with first removal hole (20) and second removal hole (21) intercommunication have all been seted up to the inside of crotch portion (2) and the front and back both sides that are located threaded rod (7).

7. The platform lift auxiliary hook force unloading structure according to claim 6, wherein: the inside slidable mounting of first removal hole (20) has adjusting column (23), the inside slidable mounting of second removal hole (21) has extension post (24), dock through a plurality of section universal joints (25) between adjusting column (23) and extension post (24), and a plurality of section universal joints (25) and third removal hole (22) cooperate and use, extension post (24) run through clamp plate (19) setting.

8. The platform lift auxiliary hook force unloading structure of claim 7, wherein: the periphery cover of consolidate lead screw (6) is established and threaded connection has mobile station (26), mobile station (26) set up in the top of clamp plate (19), two vertical groove (27) with first removal hole (20) intercommunication are all seted up to the opposite side of first vertical portion (3), the equal fixed mounting in front and back both sides on mobile station (26) right side has slider (28) with vertical groove (27) looks adaptation, and the right side of slider (28) is connected with the fixed surface of adjusting post (23).

9. The platform lift auxiliary hook force unloading structure according to claim 5, wherein: the periphery of the reinforcing screw rod (6) is sleeved with and fixedly provided with a knob (29), and the knob (29) is arranged between the pressing plate (19) and the linkage plate (9).