Balance adjustment hoisting device for heavy parts

Abstract

The utility model relates to the technical field of steering systems, in particular to a balance adjustment hoisting device for heavy components. A balance adjustment hoisting device for heavy parts is characterized in that the top of a main body hoisting rod is connected with a hoisting lug, and the bottom of the main body hoisting rod penetrates through a device base plate and a counterweight bearing plate to be connected and fastened with a nut; the counterweight bearing plate is located below the device base plate, a plurality of supporting sleeves are arranged between the device base plate and the counterweight bearing plate, and the device base plate penetrates through the supporting sleeves through a plurality of fastening bolts to be connected with the counterweight bearing plate; and a plurality of balancing weights are arranged on one side of the counterweight bearing plate. Compared with the prior art, particularly aiming at the problems that heavy components or assemblies with complex structures, narrow working spaces and inclined lifting gravity centers cannot keep balance and are inclined in the dismounting and mounting processes, rapid, safe and reliable maintenance and lifting operation can be realized through balance adjustment of the supporting ejector rods and the counterweights.

Description

Technical Field

[0001] The utility model relates to the technical field of steering systems, in particular to a balance adjustment hoisting device for heavy components. Background Art

[0002] Traditional yoke machine processing equipment currently uses a multi-station integrated processing center. This type of equipment realizes linkage processing by rotating the central turntable and processing the various sequence stations distributed around the turntable at the same time. When the reducer that drives the turntable to rotate needs to be repaired and replaced, the operation is very difficult because the reducer is installed under the internal table of the turntable. The maintenance work space inside the turntable is small and can only accommodate one person curled up inside to work. In this way, the conventional support and lifting operation method cannot be used. The reducer and the turntable are connected by a coupling. After removing the coupling, the shaft core sleeve is connected from top to bottom. In view of this structural feature, the conventional lifting method is adopted. However, the reducer weighs about 180kg and has an irregular shape. The center of gravity is offset relative to the core sleeve, which is the lifting focus point. When the reducer fastening bolts are slightly loosened during operation, the reducer is in a tilted state, and the reducer fastening bolts cannot be turned. The difficulty of the reducer disassembly operation and the safety risks of personnel and equipment components are very high; if the reducer cannot maintain balance during lifting and is in a tilted state, the reducer fastening bolt holes cannot be aligned with the thread holes of the installation table during installation, and the reducer installation operation cannot be performed; the above two objective reasons determine that the conventional sling-type lifting operation method cannot be adopted.

[0003] If the method of lifting the center turntable as a whole and turning it over and dismantling the reducer from bottom to top is adopted, the workload will be very large. First, the work site must be cleared for the crane to lift the turntable, which is difficult to achieve due to the layout of the workshop production line; secondly, the entire machine tool must be dismantled. There are five processing stations installed on the turntable that need to be dismantled, as well as the hydraulic clamps and hydraulic pipelines at each station of the machine tool, and a large number of circuit cables, support frames and other ancillary facilities. The assembly workload after disassembly is also very large, and the assembly, centering and debugging of various parts will have very high construction requirements. Otherwise, the machine tool will lose its accuracy and the operation period will be very tight. All the above objective reasons do not allow the use of large-scale dismantling and moving operations.

[0004] In order to ensure the safety of operators and machine tool components, reduce the difficulty of operation and potential risks, it is an urgent problem that the machine repair department needs to solve to complete the smooth replacement of the reducer without major dismantling of the machine tool. Summary of the invention

[0005] The utility model overcomes the deficiencies of the prior art and provides a balance adjustment hoisting device for heavy components, which can realize fast, safe and reliable maintenance hoisting operations through balance adjustment of supporting mandrels and counterweights.

[0006] In order to achieve the above purpose, a balance adjustment hoisting device for heavy parts is designed, which includes a main hoisting rod, a device base plate, a counterweight bearing plate, and a counterweight block. The characteristics are as follows: the top of the main hoisting rod is connected to the lifting lug, and the bottom of the main hoisting rod passes through the device base plate and the counterweight bearing plate respectively. and The nuts are connected and fastened; the counterweight bearing plate is located below the device base plate, and a number of support sleeves are provided between the device base plate and the counterweight bearing plate, and the device base plate is connected to the counterweight bearing plate through a number of fastening bolts penetrating the support sleeves; a number of counterweight blocks are provided on one side of the counterweight bearing plate.

[0007] A plurality of supporting and retaining top rods are connected to the device base plate, and the device base plate is contacted and supported with the bottom of the reducer through the plurality of supporting and retaining top rods.

[0008] The device base plate is a square panel structure, a circular through hole is arranged in the middle of the device base plate, and mounting thread holes for connecting, supporting and retaining the top rod are arranged around the circular through hole.

[0009] The counterweight bearing plate is an L-shaped panel structure, the horizontal panel of the counterweight bearing plate is consistent with the shape of the device base plate, and one side of the vertical panel of the counterweight bearing plate is connected to the counterweight bracket.

[0010] The counterweight bracket is an L-shaped panel structure, the vertical panel of the counterweight bracket is connected to the counterweight bearing plate, and a plurality of counterweight blocks are arranged on the horizontal panel of the counterweight bracket.

[0011] The counterweight block is a rectangular module structure, and a plurality of counterweight blocks are connected by a counterweight block fastening screw rod, and a fastening nut is connected to the top end of the counterweight block fastening screw rod.

[0012] Bolt avoidance holes are respectively arranged around the counterweight bearing plate.

[0013] The top of the main suspension rod is hung on the lifting hook through the lifting lug, and the lower part of the main suspension rod passes through the turntable and the reducer and is connected to the bottom of the reducer through the device base plate.

[0014] Compared with the prior art, the utility model provides a balance adjustment hoisting device for heavy components, especially for heavy components or assemblies with complex structure, narrow working space and eccentric lifting center of gravity, which can solve the problem that the components cannot maintain balance and tilt during disassembly and installation. Through the balance adjustment of the supporting top rod and the counterweight, fast, safe and reliable maintenance hoisting operations can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 , Figure 2 It is a schematic diagram of the structure of the utility model.

[0016] Figure 3 It is the front view of the structure of the utility model.

[0017] Figure 4 It is a schematic diagram of the connection between the utility model and the turntable and the reducer. DETAILED DESCRIPTION

[0018] The utility model is further described below with reference to the accompanying drawings.

[0019] like Figures 1 to 3 As shown, the top of the main suspension rod 1 is connected to the lifting ear 2, and the bottom of the main suspension rod 1 passes through the device base plate 3 and the counterweight bearing plate 4 and is connected to the nut 13 respectively; the counterweight bearing plate 4 is located below the device base plate 3, and a number of support sleeves 10 are provided between the device base plate 3 and the counterweight bearing plate 4, and the device base plate 3 is connected to the counterweight bearing plate 4 by passing through the support sleeves 10 through a number of fastening bolts 11; a number of counterweight blocks 7 are provided on one side of the counterweight bearing plate 4.

[0020] A plurality of supporting and retaining top rods 5 are connected to the device base plate 3 , and the device base plate 3 is supported in contact with the bottom of the reducer 14 through the plurality of supporting and retaining top rods 5 .

[0021] The device base plate 3 is a square panel structure. A circular through hole is provided in the middle of the device base plate 3 . Installation thread holes for connecting, supporting and retaining the top rod 5 are respectively provided around the circular through hole.

[0022] The counterweight bearing plate 4 is an L-shaped panel structure, the horizontal panel of the counterweight bearing plate 4 is consistent with the shape of the device base plate 3, and one side of the vertical panel of the counterweight bearing plate 4 is connected to the counterweight bracket 6.

[0023] The counterweight bracket 6 is an L-shaped panel structure, the vertical panel of the counterweight bracket 6 is connected to the counterweight bearing plate 4, and a plurality of counterweight blocks 7 are arranged on the horizontal panel of the counterweight bracket 6.

[0024] The counterweight block 7 is a rectangular module structure, and a plurality of counterweight blocks 7 are connected by a counterweight block fastening screw rod 8, and a fastening nut 9 is connected to the top end of the counterweight block fastening screw rod 8.

[0025] Bolt avoidance holes 12 are respectively arranged around the counterweight bearing plate 4.

[0026] like Figure 4 As shown, the top of the main suspension rod 1 is hung on the lifting hook through the lifting ear 2, and the lower part of the main suspension rod 1 passes through the turntable 15 and the reducer 14 and is connected to the bottom of the reducer 14 through the device base plate 3.

[0027] First, the device base plate 3 and the counterweight bearing plate 4 are supported and fastened together by four support sleeves 10 and four fastening bolts 11. The device base plate 3 and the counterweight bearing plate 4 are combined with the reducer 14 structure to process the reducer bolt avoidance holes 12 to facilitate the disassembly and installation of the fastening bolts; the lifting lug 2 is installed on the upper end of the main suspension rod 1, and the main suspension rod 1 is passed from the shaft core sleeve connected to the turntable 15 and the reducer 14 to the bottom of the reducer 14, and the lifting lug 2 is hung on the lifting hook above the turntable 15. The assembly of plates 4 is installed to the lower end of the main suspension rod 1, and the lower end surface of the counterweight bearing plate 4 is fastened with a nut 13; since the contact surface between the reducer 14 and the device base plate 3 is uneven, four supporting and retaining top rods 5 are designed and installed on the device base plate 3 to adjust the parallelism of the reducer 14 and the device base plate 3. A counterweight bracket 6 is installed on the right side of the counterweight bearing plate 4. The eccentric weight is calculated in combination with the technical parameters of the reducer 14, and a counterweight block 7 is added to the counterweight bracket 6 and the counterweight block on the counterweight bracket 6 is used to tighten the screw rod 8 and the screw rod is tightened with a tightening nut 9.

[0028] The operation process of using the lifting device for the reducer disassembly operation: After the lifting device is assembled in place, it is lifted until the device base plate 3 is fully in contact with the bottom surface of the reducer 14, and then the support and holding top rod 5 is used to keep the device base plate 3 parallel to the reducer 14 to ensure that the reducer 14 will not tilt relative to the device base plate 3 after the fastening bolts are loosened, and the fastening bolts of the reducer 14 will not be unable to be twisted due to the tilt of the reducer 14. As the fastening bolts of the reducer 14 are loosened, the weight of the reducer 14 will continue to bear pressure on the lifting device. In this process, the lifting device should be balanced by adding counterweights 7, and the fastening bolts of the reducer can rotate smoothly. After all the bolts are loosened, the reducer will be completely loaded on the device base plate 3. At this time, it is also necessary to add or subtract counterweights 7 to adjust the overall eccentricity of the lifting device, so that the device suspension rod and the shaft core sleeve remain coaxial and do not interfere with the shaft core sleeve. Finally, the lifting device is lowered to the ground, the reducer 14 is disassembled and separated from the lifting device, and the reducer disassembly operation is completed.

[0029] The operation process of using the hoisting device for the speed reducer installation operation: first, place the speed reducer on the combination of the device base plate 3 and the counterweight bearing plate 4, use the support and holding rod 5 on the device base plate 3 to adjust the speed reducer 14 support to maintain parallel contact with the device base plate 3, and then pass the suspension rod 1 from the turntable 15 to the shaft core sleeve connecting the speed reducer 14 from top to bottom, and pass downward through the shaft core hole of the speed reducer 14 to the bottom of the counterweight bearing plate 4, and tighten it with the nut 13. Combined with the technical parameters of the speed reducer 14, calculate the eccentric weight of the speed reducer, add the counterweight block 7 to the counterweight bracket 6 on the right side of the counterweight bearing plate 4, and tighten the counterweight block on the counterweight bracket 6. Tighten the screw rod 8 with the tightening nut 9, lift the lifting device, observe whether the lifting device is tilted, whether the suspension rod 1 contacts and interferes with the turntable shaft core sleeve, and adjust the overall balance of the lifting device by adding or subtracting the counterweight block 7. After adjusting the balance, lift the lifting device until the reducer 14 contacts the mounting surface of the turntable 15, observe whether the mounting surface of the reducer 14 is parallel to the mounting surface of the turntable 15, add or subtract the counterweight block 7 to adjust the parallelism of the reducer 14 and the mounting surface of the turntable 15, until the fastening bolts of the reducer 14 can be smoothly rotated and tightened. After the reducer 14 is installed in place and tightened, first remove the counterweight block 7, then disassemble and disassemble the lifting device, and the reducer installation operation is completed.

[0030] The invention and use of this counterweight balance adjustment hoisting device has been verified in actual operation, which enables the top-down disassembly of the turntable reducer to be realized. Compared with the conventional large-scale disassembly and movement operation, it greatly saves construction time, and the disassembly and assembly time is shortened from 48 hours to 8 hours. After the conventional large-scale disassembly and movement replacement operation, the machine tool still needs a long time of calibration and adjustment. The application of this counterweight hoisting device is also conducive to maintaining the accuracy of the machine tool. The support and adjustment push rod and counterweight block are used to keep the loosened reducer in a balanced state for replacement.

[0031] Compared with the traditional operation method, the utility model can ensure that the reducer always keeps a balanced state during the disassembly and installation process through counterweight balance adjustment, and can realize the top-down disassembly and installation operation of the turntable reducer, which can greatly shorten the operation period, reduce the operation difficulty, and ensure the heavy-duty component counterweight balance adjustment hoisting device for the safety of operators and equipment.

Claims

1. A balancing and adjusting hoisting device for heavy parts, comprising a main suspension rod, a device base plate, a counterweight bearing plate, and a counterweight block, characterized in that: The top of the main suspension rod (1) is connected to the lifting lug (2), and the bottom of the main suspension rod (1) passes through the device base plate (3) and the counterweight bearing plate (4) respectively and is connected to the nut (13); the counterweight bearing plate (4) is located below the device base plate (3), and a plurality of support sleeves (10) are provided between the device base plate (3) and the counterweight bearing plate (4); the device base plate (3) is connected to the counterweight bearing plate (4) by passing through the support sleeves (10) via a plurality of fastening bolts (11); and a plurality of counterweight blocks (7) are provided on one side of the counterweight bearing plate (4).

2. A balancing and adjusting hoisting device for heavy components according to claim 1, characterized in that: A plurality of supporting and retaining top rods (5) are connected to the device base plate (3), and the device base plate (3) is supported in contact with the bottom of the reducer (14) through the plurality of supporting and retaining top rods (5).

3. A balancing and adjusting hoisting device for heavy components according to claim 1 or 2, characterized in that: The device base plate (3) is a square panel structure. A circular through hole is provided in the middle of the device base plate (3). Mounting thread holes for connecting the supporting and retaining top rod (5) are respectively provided around the circular through hole.

4. The balancing and adjusting hoisting device for heavy components according to claim 1, characterized in that: The counterweight bearing plate (4) is an L-shaped panel structure, the horizontal panel of the counterweight bearing plate (4) is consistent in shape with the device base plate (3), and one side of the vertical panel of the counterweight bearing plate (4) is connected to the counterweight bracket (6).

5. A balancing and adjusting hoisting device for heavy components according to claim 4, characterized in that: The counterweight bracket (6) is an L-shaped panel structure, the vertical panel of the counterweight bracket (6) is connected to the counterweight bearing plate (4), and a plurality of counterweight blocks (7) are arranged on the horizontal panel of the counterweight bracket (6).

6. A balancing and adjusting hoisting device for heavy components according to claim 1 or 5, characterized in that: The counterweight block (7) is a rectangular module structure, and a plurality of counterweight blocks (7) are connected via a counterweight block fastening screw rod (8), and a fastening nut (9) is connected to the top end of the counterweight block fastening screw rod (8).

7. A balancing and adjusting hoisting device for heavy components according to claim 1 or 4, characterized in that: Bolt avoidance holes (12) are respectively provided on the four sides of the counterweight bearing plate (4).

8. The balance adjustment hoisting device for heavy components according to claim 1, characterized in that: The top of the main suspension rod (1) is hung on the hook of the lifting device through the lifting lug (2), and the lower part of the main suspension rod (1) passes through the turntable (15) and the reducer (14) and is connected to the bottom of the reducer (14) through the device base plate (3).

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