Tower crane balancing weight self-unloading device

Abstract

The utility model discloses a tower crane balancing weight self-discharging device, and particularly relates to the technical field of tower cranes, the tower crane balancing weight self-discharging device comprises a mounting plate, balancing weights and supporting rods, a plurality of balancing weights are arranged on one side of the mounting plate, the supporting rods are arranged on the two sides of the balancing weights, a rotating assembly is mounted on the side wall of the side center of each supporting rod, and the rotating assembly is connected with the mounting plate. The bottom of the supporting rod is fixedly connected with a moving block; first fixing strips are fixedly arranged at the tops of the two side edges of a mounting plate used for mounting, second fixing strips are fixedly arranged at the bottoms, close to the first fixing strips, of the mounting plate, the side walls of balancing weights are fixedly connected with the first fixing strips through fixing bolts, and supporting rods are located on the sides, away from the balancing weights, of the first fixing strips and the second fixing strips. The lifting device has the advantages that the lifting device can be conveniently moved to the top of the balancing weight for lifting, shaking of the balancing weight is avoided, connection lifting through a plurality of steel wire ropes is facilitated, the position of the balancing weight is conveniently adjusted, and falling of the balancing weight caused by breakage of a single steel wire rope is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tower cranes, and particularly relates to a self-unloading device for counterweight blocks of tower cranes. Background Technique

[0002] Tower cranes, abbreviated as tower machines or tower cranes, originated in Western Europe and are a relatively common lifting device in existing building construction. They belong to revolving cranes with a jib installed on the upper part of a tall tower body. Their main feature is a large working space, which can be set according to the lifting height. They are mainly used for the vertical and horizontal transportation of materials and the installation of building components in building construction.

[0003] There is a self-unloading device for counterweight blocks of a tower crane with a publication number of CN220182617U, including: a self-unloading device; a rear counterweight arm main beam, connected to the self-unloading device, and the rear counterweight arm main beam is distributed outside the two self-unloading devices; a counterweight member, used to add counterweight to the tower crane, so that when installed, the wire rope is driven through the self-unloading device by a driving part to hoist the counterweight member onto the rear counterweight arm main beam. This utility model has simple operation, does not require a truck crane, and utilizes the self-structure of the tower crane. Combining the characteristics that the counterweight block of the tower crane is small in volume but large in weight, it realizes the self-disassembly of the counterweight block of the tower crane.

[0004] For the above technical solution, the structure position of the self-unloading device in the above patent is fixed, and the position where the counterweight block is located is not in the same plane as the position of the self-unloading device. Therefore, when unloading, the counterweight block is prone to tilt and shake under the pulling of the wire rope, which is prone to cause danger and has a relatively large potential safety hazard. At the same time, since the above self-unloading device is only connected to the counterweight block by a single wire rope, once it breaks, it is easy to trigger a safety accident, and the position of the counterweight block cannot be adjusted, and an additional safety structure needs to be set. Content of the Utility Model

[0005] The purpose of the utility model is to provide a self-unloading device for counterweight blocks of a tower crane, which solves the problems of the existing device that it is necessary to be able to vertically hoist and disassemble the counterweight block to avoid the back-and-forth shaking of the counterweight block, it is necessary to be able to adjust the position of the counterweight block, and an additional safety structure is set to avoid accidents caused by the breakage of the wire rope.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a self-unloading device for counterweight blocks of a tower crane, including a mounting plate, a counterweight block, and a support rod. A plurality of counterweight blocks are arranged on one side of the mounting plate. Support rods are arranged on both sides of the counterweight block. A rotating assembly is installed on the side wall at the center of the support rod. A moving block is fixedly connected to the bottom of the support rod;

[0007] At the top of both sides of the mounting plate for installation, first fixing bars are fixedly arranged. At the bottom of the mounting plate close to the first fixing bars, second fixing bars are fixedly arranged. The side wall of the counterweight is fixedly connected to the first fixing bars through fixing bolts. The support rods are located on the side of the first fixing bars and the second fixing bars away from the counterweight.

[0008] The rotating assembly for movement includes a threaded rod and a sliding block. The outer wall of the threaded rod penetrates through the sliding block and is connected through threads. One side of the sliding block is fixedly connected to the support rod.

[0009] The moving blocks for support are slidably connected to the bottom of the second fixing bars. The two moving blocks are connected through a mounting rod. The tops of the two support rods are connected through a connecting rod. And winding wheels are installed on the outer walls of both the connecting rod and the mounting rod. A steel wire rope is wound inside the winding wheel.

[0010] Preferably, a driving motor is installed at one end of the threaded rod away from the counterweight. The power output end of the driving motor is fixedly connected to the threaded rod. The top of the sliding block slides with the bottom of the first fixing bar. The top and bottom of the driving motor are respectively fixedly connected to the first fixing bar and the second fixing bar.

[0011] Preferably, the outer walls of both ends of the mounting rod are rotatably connected to the moving block through bearings. The two ends of the connecting rod are respectively rotatably connected to the side walls of the support rods through bearings.

[0012] Preferably, lifting lugs are installed at the top and bottom of the counterweight near both sides. And the installation positions of the winding wheels on the outer walls of the connecting rod and the mounting rod correspond to the lifting lugs.

[0013] Preferably, one ends of the steel wire ropes wound around the outer walls of the winding wheels at both ends of the connecting rod are respectively connected and fixed to the lifting lugs on both sides of the top of the counterweight. One ends of the steel wire ropes wound around the outer walls of the winding wheels at both ends of the mounting rod are respectively connected and fixed to the lifting lugs on both sides of the bottom of the counterweight.

[0014] Preferably, both sides of the mounting plate are fixedly connected to the tower crane through the first fixing bars and the second fixing bars. One end of the steel wire rope away from the counterweight is connected and fixed to the winding roller of the winch inside the tower crane.

[0015] In the above technical solution, the technical effects and advantages provided by the present utility model are:

[0016] 1. The connecting rod moves to the top position of the counterweight. At the same time, when the support rod moves, it can also drive the moving block at its bottom to move along the second fixed bar, so that the mounting rod moves to one side of the counterweight. Then, fix the steel wire rope wound around the wire wheel on the outer wall of the connecting rod to the lifting lug at the top of the counterweight. Then, pull the counterweight through the steel wire rope. Fix the steel wire ropes at both ends of the wire wheel on the outer wall of the mounting rod to the corresponding lifting lugs at the bottom of the counterweight. At this time, the fixation between the counterweight and the first fixed bar can be released, and the winch can be conveniently started. By loosening the steel wire rope, the counterweight can gradually move towards the ground under the action of its own gravity.

[0017] 2. During hoisting and disassembly, the weight of the counterweight is shared by two steel wire ropes together, effectively reducing the tension borne by a single steel wire rope. And because the steel wire rope wound around the wire wheel on the outer wall of the mounting rod is connected to the lifting lug at the bottom of the counterweight, steel wire ropes are connected to all four corners of the counterweight. Then, by pulling and loosening multiple steel wire ropes out of sync, the forces at the lifting lugs of the counterweight can be made different, so that it is convenient to drive the counterweight to tilt and adjust. At the same time, if a single steel wire rope breaks, the other three steel wire ropes can continue to pull, preventing the counterweight from falling and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the present invention;

[0020] Figure 2 It is a front view of the present invention;

[0021] Figure 3 It is a top view of the present invention;

[0022] Figure 4 It is a schematic diagram of the external connection structure of the counterweight of the present invention;

[0023] Figure 5 It is a schematic diagram of the connection structure between the support rod and the rotating assembly of the present invention.

[0024] DESCRIPTION OF THE REFERENCE NUMERALS:

[0025] 1. Mounting plate; 101. First fixing strip; 102. Second fixing strip; 2. Counterweight; 201. Lifting lug; 3. Support rod; 301. Connecting rod; 4. Rotating assembly; 401. Threaded rod; 402. Sliding block; 403. Driving motor; 5. Moving block; 501. Mounting rod; 6. Wire winding wheel; 601. Steel wire rope. Detailed implementation manners

[0026] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] The present invention provides a Figures 1-5 self-unloading device for the counterweight of a tower crane as shown in the figure, including a mounting plate 1, a counterweight 2 and a support rod 3. A plurality of counterweights 2 are arranged on one side of the mounting plate 1. Support rods 3 are arranged on both sides of the counterweight 2. A rotating assembly 4 is installed on the side wall at the center of the support rod 3. The bottom of the support rod 3 is fixedly connected with a moving block 5. At the top of both sides of the mounting plate 1 for installation, a first fixing strip 101 is fixedly arranged. At the bottom of the mounting plate 1 close to the first fixing strip 101, a second fixing strip 102 is fixedly arranged. The side wall of the counterweight 2 is fixedly connected with the first fixing strip 101 through a fixing bolt. The support rod 3 is located on the side of the first fixing strip 101 and the second fixing strip 102 away from the counterweight 2.

[0028] As Figures 1-5 shown, the rotating assembly 4 for moving includes a threaded rod 401 and a sliding block 402. The outer wall of the threaded rod 401 penetrates through the sliding block 402 and is connected through threads. One side of the sliding block 402 is fixedly connected with the support rod 3. One end of the threaded rod 401 away from the counterweight 2 is installed with a driving motor 403. The power output end of the driving motor 403 is fixedly connected with the threaded rod 401. The top of the sliding block 402 slides with the bottom of the first fixing strip 101. The top and bottom of the driving motor 403 are respectively fixedly connected with the first fixing strip 101 and the second fixing strip 102. The driving motor 403 drives the threaded rod 401 to rotate, so that the threaded rod 401 drives the sliding block 402 to slide along the bottom of the first fixing strip 101, and then the sliding block 402 drives the movement of the support rod 3.

[0029] As Figure 2 、 Figure 4As shown, lifting lugs 201 are installed near both sides of the top and bottom of the counterweight 2, and the winding wheels 6 on the outer walls of the connecting rod 301 and the mounting rod 501 are installed corresponding to the lifting lugs 201. One end of the steel wire rope 601 wound around the outer walls of the winding wheels 6 at both ends of the connecting rod 301 is respectively connected and fixed to the lifting lugs 201 on both sides of the top of the counterweight 2, and one end of the steel wire rope 601 wound around the outer walls of the winding wheels 6 at both ends of the mounting rod 501 is respectively connected and fixed to the lifting lugs 201 on both sides of the bottom of the counterweight 2. Start the winch, and by relaxing the steel wire rope 601, the counterweight 2 can be gradually moved towards the ground under the action of its gravity. And because the lifting lug 201 at the top of the counterweight 2 is vertically connected and fixed to the steel wire rope 601, the counterweight 2 will not be driven to tilt and shake to both sides when moving downwards.

[0030] When disassembling the counterweight 2, the rotating assembly 4 can be conveniently started, so that the driving motor 403 drives the threaded rod 401 to rotate, and then the threaded rod 401 drives the sliding block 402 to slide along the bottom of the first fixing strip 101, and then the sliding block 402 drives the movement of the support rod 3, so that the support rod 3 moves to both sides of the counterweight 2 to be hoisted, and the connecting rod 301 moves to the top position of the counterweight 2. At the same time, when the support rod 3 moves, it can also drive the moving block 5 at the bottom of the support rod 3 to move along the second fixing strip 102, so that the mounting rod 501 moves to one side of the counterweight 2. Then, fix the steel wire rope 601 wound around the winding wheel 6 on the outer wall of the connecting rod 301 to the lifting lug 201 at the top of the counterweight 2. Then, the steel wire rope 601 realizes the pulling of the counterweight 2 through the lifting lug 201. Fix the steel wire ropes 601 at both ends of the winding wheel 6 on the outer wall of the mounting rod 501 to the lifting lugs 201 at the bottom of the counterweight 2. At this time, the fixing bolts connecting the counterweight 2 and the first fixing strip 101 can be removed, and the winch can be conveniently started. By relaxing the steel wire rope 601, the counterweight 2 can be gradually moved towards the ground under the action of its gravity. And because the lifting lug 201 at the top of the counterweight 2 is vertically connected and fixed to the steel wire rope 601, the counterweight 2 will not be driven to tilt and shake to both sides when moving downwards. Moreover, because the lifting lugs 201 at both sides of the bottom of the counterweight 2 are connected with the steel wire rope 601, the lifting lugs 201 at the bottom of the counterweight 2 can also be effectively pulled by the steel wire rope 601 to avoid the bottom of the counterweight 2 from swinging back and forth and keep it stable.

[0031] As Figure 3 、 Figure 5As shown, the moving block 5 for support is slidably connected to the bottom of the second fixed bar 102. The two moving blocks 5 are connected by a mounting rod 501. The tops of the two support rods 3 are connected by a connecting rod 301. A wire reel 6 is installed on the outer walls of both the connecting rod 301 and the mounting rod 501. A steel wire rope 601 is wound inside the wire reel 6. The two ends of the outer wall of the mounting rod 501 are rotatably connected to the moving block 5 through bearings. The two ends of the connecting rod 301 are respectively rotatably connected to the side walls of the support rods 3 through bearings. Since the steel wire rope 601 wound around the wire reel 6 on the outer wall of the mounting rod 501 is connected to the lifting lug 201 at the bottom of the counterweight 2, steel wire ropes 601 are connected to all four corners of the counterweight 2. By pulling and relaxing the multiple steel wire ropes 601 out of sync, the forces on the lifting lug 201 of the counterweight 2 can be made different, and thus it is convenient to drive the counterweight 2 to tilt and adjust.

[0032] As Figure 1 , Figure 5 shown, both sides of the mounting plate 1 are fixedly connected to the tower crane through the first fixed bar 101 and the second fixed bar 102 respectively. The end of the steel wire rope 601 away from the counterweight 2 is fixedly connected to the wire winding roller of the winch inside the tower crane. Even if a single steel wire rope 601 breaks, the other three steel wire ropes 601 can continuously pull the counterweight 2, preventing the counterweight 2 from falling freely and avoiding safety accidents, thus improving safety.

[0033] During use, the lifting lugs 201 on both sides of the top of the counterweight 2 can be connected to the steel wire ropes 601, so that the steel wire ropes 601 pass through the wire reels 6 and are wound and connected to the winch. During hoisting and disassembly, the two steel wire ropes 601 respectively connected to the two lifting lugs 201 at the top of the counterweight 2 can share the weight together, effectively reducing the tension borne by a single steel wire rope 601 and avoiding breakage due to overloading of the tension. Since the steel wire rope 601 wound around the wire reel 6 on the outer wall of the mounting rod 501 is connected to the lifting lug 201 at the bottom of the counterweight 2, steel wire ropes 601 are connected to all four corners of the counterweight 2. By pulling and relaxing the multiple steel wire ropes 601 out of sync, the forces on the lifting lug 201 of the counterweight 2 can be made different, and thus it is convenient to drive the counterweight 2 to tilt and adjust. At the same time, even if a single steel wire rope 601 breaks, the other three steel wire ropes 601 can continuously pull the counterweight 2, preventing the counterweight 2 from falling freely and avoiding safety accidents, thus improving safety.

[0034] Only some exemplary embodiments of the present utility model are described by way of illustration. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present utility model.

Claims

1. A self-unloading device for counterweight blocks of a tower crane, comprising a mounting plate (1), a counterweight block (2) and a support rod (3), characterized in that: On one side of the mounting plate (1), a plurality of counterweights (2) are provided. On both sides of the counterweight (2), support rods (3) are provided. A rotating assembly (4) is installed on the side wall at the center of the support rod (3). The bottom of the support rod (3) is fixedly connected to a moving block (5). At the top of both side edges of the mounting plate (1) for installation, a first fixing strip (101) is fixedly provided. At the bottom of the mounting plate (1) near the first fixing strip (101), a second fixing strip (102) is fixedly provided. The side wall of the counterweight (2) is fixedly connected to the first fixing strip (101) through a fixing bolt. The support rod (3) is located on the side of the first fixing strip (101) and the second fixing strip (102) away from the counterweight (2). The rotating assembly (4) for movement includes a threaded rod (401) and a sliding block (402). The outer wall of the threaded rod (401) passes through and is threadedly connected to the sliding block (402). One side of the sliding block (402) is fixedly connected to the support rod (3). The moving block (5) for support is slidably connected to the bottom of the second fixing strip (102). The two moving blocks (5) are connected by a mounting rod (501). The tops of the two support rods (3) are connected by a connecting rod (301). And winding wheels (6) are installed on the outer walls of the connecting rod (301) and the mounting rod (501). A steel wire rope (601) is wound inside the winding wheel (6).

2. The self-unloading device for counterweight of a tower crane according to claim 1, characterized in that: One end of the threaded rod (401) away from the counterweight (2) is installed with a driving motor (403). The power output end of the driving motor (403) is fixedly connected to the threaded rod (401). The top of the sliding block (402) is slidably connected to the bottom of the first fixing strip (101). The top and bottom of the driving motor (403) are respectively fixedly connected to the first fixing strip (101) and the second fixing strip (102).

3. The self-unloading device for the counterweight of a tower crane according to claim 1, wherein: The outer walls at both ends of the mounting rod (501) are rotatably connected to the moving block (5) through bearings. The two ends of the connecting rod (301) are respectively rotatably connected to the side walls of the support rods (3) through bearings.

4. A self-unloading device for counterweight blocks of a tower crane according to claim 1, characterized in that: Lifting lugs (201) are installed near both side edges at the top and bottom of the counterweight (2). And the installation positions of the winding wheels (6) on the outer walls of the connecting rod (301) and the mounting rod (501) correspond to the lifting lugs (201).

5. A self-unloading device for counterweight blocks of a tower crane according to claim 4, characterized in that: One end of the steel wire rope (601) wound around the outer wall of the winding wheel (6) at both ends of the connecting rod (301) is respectively connected and fixed to the lifting lugs (201) on both sides at the top of the counterweight (2). One end of the steel wire rope (601) wound around the outer wall of the winding wheel (6) at both ends of the mounting rod (501) is respectively connected and fixed to the lifting lugs (201) on both sides at the bottom of the counterweight (2).

6. The self-unloading device for counterweight of a tower crane according to claim 1, characterized in that: Both sides of the mounting plate (1) are fixedly connected to the tower crane through the first fixing strip (101) and the second fixing strip (102). One end of the steel wire rope (601) away from the counterweight (2) is connected and fixed to the winding roller of the hoist inside the tower crane.

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