CN217437518U

CN217437518U - Lifting hook fixing device for tower crane

Info

Publication number: CN217437518U
Application number: CN202122778898.3U
Authority: CN
Inventors: 高锡奎; 王波; 高振伟
Original assignee: Guangdong Dehong Construction Engineering Co ltd
Current assignee: Guangdong Dehong Construction Engineering Co ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-09-16
Anticipated expiration: 2031-11-15

Abstract

The utility model discloses a hook fixing device for a tower crane, which relates to the technical field of hoisting equipment and comprises a tower body and a lifting rod, chain take-up wheels are rotatably arranged on the top of the tower body and two sides of the top of the lifting rod, the circumferences of the three chain take-up wheels are fixedly connected with a chain, the bottom of the chain is fixedly provided with a hook body, the bottom of the lifting rod is fixedly provided with an installation shell, two ends of the top of the mounting shell are both provided with sliding grooves, two inner walls of the sliding grooves are rotationally connected with the same positive and negative rotation thread screw rod through bearings, a rotating motor with an output shaft fixedly connected with a positive and negative rotating thread screw rod is fixedly arranged in the mounting shell, and moving blocks are arranged on two sides of the circumference of the forward and reverse threaded screw rod in a rotating mode through threads, and two ends of each moving block are attached to inner walls of two ends of each sliding groove. The utility model discloses can fix the lifting hook spacing, improve device's security performance.

Description

Lifting hook fixing device for tower crane

Technical Field

The utility model relates to a lifting device technical field especially relates to a lifting hook fixing device for tower crane.

Background

At present, a hoisting tower is often used for hoisting some heavy weight objects in engineering so as to move the weight objects to a specified position for use. The existing hoisting tower is generally provided with a hoisting device, the front end of the hoisting device is provided with a lifting hook, the lifting hook is suspended at the front end of the hoisting tower, and when the hoisting tower is used, the lifting hook is only controlled to move to a specified position and be hooked on a heavy object, and then the heavy object is hung and connected by the hoisting device and moved to the specified position.

The lifting hook of prior art is all bigger, and weight is also bigger, stops to hang the grafting back of heavy object, can make the lifting hook of tower crane front end produce certain rocking, rocks when the lifting hook amplitude too big probably can make the collision take place between lifting hook and building or the tower crane, has serious potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a lifting hook fixing device for a tower crane. Its advantage lies in can fixing spacing with the lifting hook, improves the security performance of device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a lifting hook fixing device for a tower crane comprises a tower body and a lifting rod, wherein the top of the tower body and two sides of the top of the lifting rod are both rotatably provided with a receiving chain wheel, the three circumferences of the receiving chain wheels are fixedly connected on the same chain, the bottom of the chain is fixedly provided with a lifting hook body, the bottom of the lifting rod is fixedly provided with an installation shell, two ends of the top of the installation shell are both provided with sliding grooves, the inner walls of the two sliding grooves are both rotatably connected with a forward and reverse threaded lead screw through bearings, a rotating motor of which the output shaft is fixedly connected with the forward and reverse threaded lead screw is fixedly installed in the installation shell, two circumferential sides of the forward and reverse threaded lead screw are both provided with moving blocks through threaded rotation, two ends of the moving blocks are attached to the inner walls of two ends of the sliding grooves, the chain is positioned between the two moving blocks in the same sliding groove, the same connecting plate is fixedly connected between the two moving blocks positioned on the same side in the sliding groove, and a fixing mechanism is arranged at the bottom of the connecting plate close to the tower body.

Through the technical scheme: when needs are fixed to the lifting hook body, can drive just reversing screw lead screw by rotating the motor and rotate and then make the movable block on just reversing screw lead screw phase displacement, carry out spacing dragging to the chain through the connecting plate of keeping away from the tower body this moment, reduce the chain length with this body coupling of lifting hook, thereby reduce the amplitude of oscillation of lifting hook body, the security performance of the device is improved, further fixed the lifting hook body by the fixed establishment of the connecting plate bottom that is close to the tower body, prevent that the lifting hook body from swinging or droing, the security performance of whole improvement device.

The utility model discloses further set up to, the groove of stepping down that is circular-arc setting is offered to one side that the connecting plate is close to the chain.

Through the technical scheme: the setting of the groove of stepping down can improve the connecting plate to the spacing degree of convenience that drags the removal of chain, and then improves the device to the fixed convenience performance of lifting hook.

The utility model discloses further set up to, the spacing groove has been seted up at the top of movable block, the spacing inslot is filled with a plurality of ball, the circumference top of the outstanding movable block of ball the top just laminate mutually with the tank bottom of sliding tray.

Through the technical scheme: the setting of spacing groove replaces the movable block through the ball and contacts with the top of sliding tray, has reduced the frictional force between movable block and the sliding tray, also can prevent simultaneously because of the displacement that the installation casing rust change influences the movable block, and the stability ability that the improvement device fixed is carried out the lifting hook.

The utility model discloses further set up to, fixed establishment is including setting up the mechanical tongs in the connecting plate bottom that is close to the tower body, mechanical tongs and the mutual parallel arrangement of chain.

Through the technical scheme: the setting of mechanical tongs can carry out the centre gripping with the lifting hook body that is dragged to move by the connecting plate is fixed, prevents that the lifting hook body from swinging or coming off, wholly improves the security performance of device.

The utility model discloses further set up to, be close to there is fixed square pipe connecting plate bottom fixed mounting of tower body, the equal fixedly connected with electric cylinder in top both ends of fixed square pipe, the inner wall of fixed square pipe has cup jointed the lifting sleeve pipe, the inside piston end fixed connection with electric cylinder in lifting sleeve pipe's bottom.

Through the technical scheme: the electric cylinder can drive the lifting sleeve to slide up and down in the fixed square pipe, the height of the fixing mechanism is adjusted, the mechanical gripper is convenient to clamp and fix the lifting hook body, and convenience is improved when the lifting hook body is fixed by the aid of the lifting device.

The utility model discloses further set up to, one side bottom position department fixed mounting that lifting sleeve is close to the lifting hook body has the mounting bracket, it is connected with same dwang to rotate through the bearing between the both ends inner wall of mounting bracket, fixedly connected with fixed block on the circumference of dwang, mechanical tongs fixed mounting is served at one that the dwang was kept away from to the fixed block, the one end outer wall fixed mounting of mounting bracket has its output shaft and dwang fixed connection's angle accommodate motor.

Through the technical scheme: the setting of angle accommodate motor can drive the dwang and rotate, and then adjusts the angle of mechanical tongs, and the mechanical tongs of being convenient for carries out the centre gripping to the lifting hook body and fixes, improves the convenience when the device carries out the fixing to the lifting hook body.

The utility model discloses further set up to, mechanical gripper's tongs surface all is provided with the cushion rubber layer.

Through the technical scheme: the arrangement of the buffer rubber layer can avoid rigid collision between the mechanical gripper and the lifting hook body, and the stability of the device is improved.

The utility model has the advantages that:

1. this a lifting hook fixing device for tower crane, when needs are fixed to the lifting hook body, can drive positive and negative screw lead screw by rotating the motor and rotate and then make the movable block on positive and negative screw lead screw phase displacement, carry out spacing pulling through the connecting plate of keeping away from the tower body to the chain this moment, reduce the chain length with this body coupling of lifting hook, thereby reduce the swing range of lifting hook body, the security performance of the high-speed device, further fixing the lifting hook body by the fixed establishment that is close to the connecting plate bottom of tower body, prevent that the lifting hook body from swinging or droing, the security performance of the whole high-speed device.

2. This a lifting hook fixing device for tower crane through the setting of spacing groove, replaces the top of movable block and sliding tray to contact through the ball, has reduced the frictional force between movable block and the sliding tray, also can prevent simultaneously to influence the displacement of movable block because of installation casing rust ization, and the stability ability that the improvement device was fixed to the lifting hook.

3. This a lifting hook fixing device for tower crane through angle accommodate motor's setting, can drive the dwang and rotate, and then adjusts the angle of mechanical tongs, and the mechanical tongs of being convenient for carries out the centre gripping to the lifting hook body and fixes, improves the convenience when the device carries out the fixing to the lifting hook body.

Drawings

Fig. 1 is a schematic perspective view of a hook fixing device for a tower crane according to the present invention;

fig. 2 is a schematic view showing a three-dimensional structure of a positive and negative rotation threaded screw rod highlighted by the hook fixing device for a tower crane provided by the utility model;

fig. 3 is a schematic view showing a partial cross-sectional structure of a protruding moving block of the hook fixing device for a tower crane provided by the present invention;

fig. 4 is the utility model provides a local cross-sectional structure schematic diagram of a lifting hook fixing device elevating system for tower crane.

In the figure: 1. a tower body; 2. a lifting rod; 3. chain wheel retracting; 4. a chain; 5. a hook body; 6. installing a shell; 7. a positive and negative rotation threaded screw rod; 8. a moving block; 9. a connecting plate; 10. a yielding groove; 11. fixing the square tube; 12. an electric cylinder; 13. a lifting sleeve; 14. a mounting frame; 15. An angle adjustment motor; 16. a fixed block; 17. a mechanical gripper; 18. a limiting groove; 19. and a ball.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Referring to fig. 1-4, a hook fixing device for a tower crane comprises a tower body 1 and a lifting rod 2, wherein the top of the tower body 1 and two sides of the top of the lifting rod 2 are both rotatably provided with a chain receiving wheel 3, the circumferences of the three chain receiving wheels 3 are fixedly connected to a same chain 4, the bottom of the chain 4 is fixedly provided with a hook body 5, the bottom of the lifting rod 2 is fixedly provided with a mounting shell 6, two ends of the top of the mounting shell 6 are both provided with a sliding groove, the inner walls of the two sliding grooves are both rotatably connected with a forward and reverse threaded lead screw 7 through a bearing, a rotating motor with an output shaft fixedly connected with the forward and reverse threaded lead screw 7 is fixedly arranged in the mounting shell 6, two sides of the circumference of the forward and reverse threaded lead screw 7 are both rotatably provided with moving blocks 8 through threads, two ends of the moving blocks 8 are attached to the inner walls of the two ends of the sliding grooves, and the chain 4 is positioned between the two moving blocks 8 in the same sliding groove, the same connecting plate 9 is fixedly connected between the two moving blocks 8 which are positioned on the same side in the sliding groove, and a fixing mechanism is arranged at the bottom of the connecting plate 9 close to the tower body 1.

Specifically, the groove 10 of stepping down that is circular-arc setting is offered to one side that connecting plate 9 is close to chain 4, and the setting of groove 10 of stepping down can improve the convenient degree that connecting plate 9 drags the spacing of chain 4 and move, and then improves the device to the fixed convenience of lifting hook.

Specifically, a limiting groove 18 is formed in the top of the moving block 8, a plurality of balls 19 are filled in the limiting groove 18, the tops of the circumferences of the balls 19 protrude out of the top of the moving block 8 and are attached to the bottom of the sliding groove, the balls 19 are arranged in the limiting groove 18, the moving block 8 is replaced by the balls 19, the top of the sliding groove is in contact with the top of the moving block 8, friction force between the moving block 8 and the sliding groove is reduced, meanwhile, the situation that the moving block 8 is affected by rust of the mounting shell 6 can be prevented, and the stability of the device for fixing the lifting hook is improved.

Concretely, fixed establishment is including setting up the mechanical tongs 17 in the connecting plate 9 bottom that is close to tower body 1, and mechanical tongs 17 and the mutual parallel arrangement of chain 4, the setting of mechanical tongs 17 can be fixed with carrying out the centre gripping by the spacing lifting hook body 5 that drags to come of connecting plate 9, prevents that lifting hook body 5 from swinging or coming off, wholly improves the security performance of device.

Specifically, be close to 9 bottom fixed mounting of connecting plate of tower body 1 and have fixed square pipe 11, the equal fixedly connected with electric cylinder 12 in the top both ends of fixed square pipe 11, lifting sleeve 13 has been cup jointed to the inner wall of fixed square pipe 11, the inside piston end fixed connection with electric cylinder 12 in bottom of lifting sleeve 13, electric cylinder 12's setting, can drive lifting sleeve 13 and slide from top to bottom in fixed square pipe 11, adjust fixed establishment's height, it is fixed to be convenient for mechanical tongs 17 carries out the centre gripping to lifting hook body 5, improve the convenience when the device carries out the fixing to lifting hook body 5.

Specifically, one side bottom position department fixed mounting that lifting sleeve 13 is close to lifting hook body 5 has mounting bracket 14, it is connected with same dwang to rotate through the bearing between the both ends inner wall of mounting bracket 14, fixedly connected with fixed block 16 on the circumference of dwang, mechanical tongs 17 fixed mounting is served at the dwang is kept away from to fixed block 16, mounting bracket 14's one end outer wall fixed mounting has its output shaft and dwang fixed connection's angle accommodate motor 15, angle accommodate motor 15's setting, can drive the dwang and rotate, and then adjust mechanical tongs 17's angle, it is fixed to carry out the centre gripping to lifting hook body 5 to be convenient for mechanical tongs 17, convenience when the improvement device carries out the fixing to lifting hook body 5.

Specifically, the buffer rubber layers are arranged on the surfaces of the mechanical grippers 17, so that rigid collision between the mechanical grippers 17 and the lifting hook body 5 can be avoided, and the stability of the device is improved.

The working principle is as follows: when needs are fixed to lifting hook body 5, can drive positive derotation screw lead screw 7 by rotating the motor and rotate and then make the movable block 8 move in opposite directions on positive derotation screw lead screw 7, carry out spacing pulling to chain 4 through the connecting plate 9 of keeping away from tower body 1 this moment, reduce the chain 4 length of being connected with lifting hook body 5, thereby reduce lifting hook body 5's amplitude of oscillation, improve the security performance of device, further fixed lifting hook body 5 is fixed by the fixed establishment of the connecting plate 9 bottom that is close to tower body 1, prevent lifting hook body 5 swing or drop, the security performance of whole improvement device.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a lifting hook fixing device for tower crane, includes tower body (1) and lifting rod (2), its characterized in that, the top of tower body (1) and the top both sides of lifting rod (2) all rotate and are provided with receipts sprocket (3), three the circumference fixed connection of receiving sprocket (3) is on same chain (4), the bottom fixed mounting of chain (4) has lifting hook body (5), the bottom fixed mounting of lifting rod (2) has installation casing (6), the sliding tray has all been seted up at the top both ends of installation casing (6), two the inner wall of sliding tray all is connected with a just reverse screw thread lead screw (7) through the bearing rotation, installation casing (6) internal fixation installs the rotation motor of its output shaft and just reverse screw thread lead screw (7) fixed connection, the circumference both sides of just reverse screw thread lead screw (7) all are provided with movable block (8) through the screw thread rotation, the two ends of the moving blocks (8) are attached to the inner walls of the two ends of the sliding grooves, the chain (4) is located between the two moving blocks (8) in the same sliding groove, the same connecting plate (9) is fixedly connected between the two moving blocks (8) on the same side in the sliding groove, and a fixing mechanism is arranged at the bottom of the connecting plate (9) close to the tower body (1).

2. The lifting hook fixing device for the tower crane according to claim 1, wherein one side of the connecting plate (9) close to the chain (4) is provided with an abdicating groove (10) which is arc-shaped.

3. The lifting hook fixing device for the tower crane according to claim 1, wherein a limiting groove (18) is formed in the top of the moving block (8), a plurality of balls (19) are filled in the limiting groove (18), and the circumferential top of the balls (19) protrudes out of the top of the moving block (8) and is attached to the bottom of the sliding groove.

4. A lifting hook fixing device for tower crane according to claim 1, characterized in that, the fixing mechanism includes a mechanical gripper (17) arranged at the bottom of the connecting plate (9) close to the tower body (1), the mechanical gripper (17) and the chain (4) are arranged in parallel.

5. The lifting hook fixing device for the tower crane according to claim 4, characterized in that a fixed square tube (11) is fixedly mounted at the bottom of a connecting plate (9) close to the tower body (1), electric cylinders (12) are fixedly connected to both ends of the top of the fixed square tube (11), a lifting sleeve (13) is sleeved on the inner wall of the fixed square tube (11), and the bottom of the lifting sleeve (13) is internally connected with the piston end of the electric cylinder (12).

6. The lifting hook fixing device for the tower crane according to claim 5, characterized in that, there is mounting bracket (14) in one side bottom position department fixed mounting that lifting sleeve (13) is close to lifting hook body (5), it is connected with same dwang to rotate through the bearing between the both ends inner wall of mounting bracket (14), fixedly connected with fixed block (16) on the circumference of dwang, mechanical tongs (17) fixed mounting is served at one of dwang is kept away from in fixed block (16), the one end outer wall fixed mounting of mounting bracket (14) has its output shaft and dwang fixed connection's angle modulation motor (15).

7. A lifting hook fixing device for a tower crane according to claim 4, characterized in that the surfaces of the mechanical grippers (17) are provided with a buffer rubber layer.