Special tool for hoisting rotor of screw compressor and operation method of special tool

Abstract

The invention provides a special tool for hoisting a screw compressor rotor. The special tool comprises a clamping mechanism, a hoisting beam mechanism, an adjusting mechanism and a transmission assembly, the clamping mechanism unit comprises a clamping body, a plurality of bolts and a turning nut; the hanging beam mechanism comprises a connecting column and a cross beam; the adjusting mechanism comprises an adjusting box and a hoisting point; the transmission assembly comprises a tooth-shaped track, a gear and an adjusting handle. One side of the clamping body is in threaded connection with a plurality of bolts, and the other side of the clamping body is connected with a turning nut. The rotor is fixed by the bolt, so that the rotor and the tool form a whole, the gear is driven by the adjusting handle to slide along the track, the hoisting point and the gravity center of the rotor can be quickly aligned, the tedious process of repeated measurement and trial hoisting of a traditional tool is avoided, and the hoisting efficiency is greatly improved. Meanwhile, the rotating angle of the rotor can be flexibly adjusted through the arranged turning nut, the rotor can conveniently and smoothly retreat from the compressor cavity, and the defect that an existing tool cannot achieve angle adjustment is overcome.

Description

Technical Field

[0001] The invention relates to the field of auxiliary tools, and in particular to a special tool for hoisting a screw compressor rotor and an operating method thereof. Background Art

[0002] Screw compressors are key equipment widely used in industrial production. The rotor, its core component, may suffer from wear and deformation after long-term operation and needs regular maintenance. During the maintenance process, maintenance personnel first need to lift the rotor out of the compressor cavity.

[0003] Traditional lifting methods usually use slings or wire ropes for fixing and lifting. Although this method is simple, it is difficult to accurately determine the position of the lifting point, and multiple measurements and adjustments are required to align the center of gravity of the rotor. This is not only labor-intensive and time-consuming, but also easily affects the lifting effect due to operational errors, posing a threat to the operational safety of maintenance personnel. In addition, during the maintenance process, the rotor often needs to be rotated and adjusted to ensure that the rotor can smoothly exit the compressor cavity, but the existing lifting tools cannot meet this requirement, and usually require the use of additional equipment to assist in the operation, further increasing the complexity of the work and time cost. These problems are particularly prominent when the maintenance site is limited or the conditions are complex. Summary of the invention

[0004] Based on the above background, the purpose of the present invention is to provide a special tool for lifting a screw compressor rotor and an operating method thereof, which can accurately determine the position of the lifting point and easily adjust the rotor rotation, so as to solve the problems described in the background technology.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] A special tool for hoisting a screw compressor rotor, comprising a clamping mechanism, a hanging beam mechanism, an adjustment mechanism and a transmission assembly;

[0007] The clamping mechanism unit comprises a clamping body, a plurality of bolts and a turning nut;

[0008] The beam suspension mechanism comprises a connecting column and a cross beam;

[0009] The adjustment mechanism includes an adjustment box and a hanging point;

[0010] The transmission assembly includes a toothed track, a gear and an adjustment handle;

[0011] One side of the clamping body is connected to the plurality of bolts through threads, and the other side of the clamping body is connected to a turntable nut, and the turntable nut is rotatably matched on the surface of the clamping body;

[0012] The connecting column is connected to the upper part of the clamping body, the crossbeam is connected to the upper part of the connecting column, and the crossbeam is located on the side of the clamping body where the bolts are arranged;

[0013] The adjustment box is mounted on the crossbeam, the surface of the crossbeam is connected to the track, the inside of the adjustment box is connected to the gear, the track is meshing with the gear, the adjustment box and the crossbeam are slidingly matched through the gear and the track, an adjustment handle is arranged on the outside of the adjustment box, the adjustment handle rotates on the surface of the adjustment box, the adjustment handle is connected to the gear through the adjustment box, and a lifting point is arranged on the top of the outside of the adjustment box.

[0014] Preferably, a through opening is provided in the middle of the clamping body, and the through opening is coaxially arranged with the turning nut.

[0015] Preferably, the lifting point and the regulating box are an integrated structure.

[0016] Preferably, an anti-skid layer is disposed on the outside of the adjustment handle, and the anti-skid layer is connected to the adjustment handle.

[0017] Preferably, displacement scale marks are provided on the surface of the beam.

[0018] Preferably, radial scale marks are provided on the surface of the turning nut.

[0019] Preferably, a protective gasket is provided on one side of the clamping body where the bolts are provided, and the protective gasket is connected to the clamping body.

[0020] Preferably, a limiting end is provided at one end of the cross beam away from the connecting column.

[0021] An operating method of a special tool for hoisting a screw compressor rotor, comprising:

[0022] S1. Fix the connecting plate of the screw compressor rotor to the clamping body through a plurality of bolts, and then connect the end of the screw compressor rotor to the turning nut;

[0023] S2, forming the rotor and the lifting tool into a whole through the clamping mechanism;

[0024] S3. Use the hook of a small hoist to hook the lifting point on the adjustment box to form a lifting preparation state;

[0025] S4. Turn the adjustment handle to drive the gear to move along the track, thereby changing the position of the adjustment box on the beam so that the lifting point is aligned with the center of gravity of the rotor to ensure that the rotor remains horizontal during the lifting process;

[0026] S5. Turn the turning nut to drive the rotor to rotate and gradually withdraw it from the screw compressor cavity.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] 1. The adjustment handle is used to drive the gear to move along the track, and the lifting point can be quickly adjusted to align with the center of gravity of the rotor, avoiding the complex operation of repeated measurement and trial lifting required by traditional tools, and improving the lifting efficiency;

[0029] 2. The turning nut is used to realize the flexible rotation of the rotor, so that it can be adjusted to a suitable position according to the needs, which is convenient for the rotor to be smoothly withdrawn from the compressor cavity, solving the problem that the existing tools cannot be rotated and adjusted;

[0030] 3. The clamping mechanism fixes the rotor with bolts. Compared with traditional slings or wire ropes, the fixation is more firm and reliable, avoiding the tool slipping during the lifting process;

[0031] 4. The present invention designs the clamping mechanism, the beam hanging mechanism and the adjustment mechanism into an integrated structure, which is simple and convenient to install and disassemble. The entire maintenance operation can be completed by only two operators, which greatly reduces the labor cost;

[0032] 5. The present invention has low site requirements and occupies little space, and is particularly suitable for the screw compressor rotor hoisting operation in a narrow or complex environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 It is a schematic diagram of the positional relationship between the adjustment box and the crossbeam of the present invention;

[0036] Figure 3 It is a schematic diagram of the internal structure of the adjustment box of the present invention.

[0037] In the figure: 1. Clamping mechanism; 101. Clamping body; 102. Bolt; 103. Turning nut; 2. Beam hanging mechanism; 201. Connecting column; 202. Crossbeam; 3. Adjustment mechanism; 301. Adjustment box; 302. Lifting point; 4. Transmission assembly; 401. Track; 402. Gear; 403. Adjustment handle; 5. Through port; 6. Protective gasket; 7. Limit end; 8. Rotor. DETAILED DESCRIPTION

[0038] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of the present invention is not limited to the following embodiments, and any form of modification and / or change made to the present invention will fall within the protection scope of the present invention.

[0039] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the art. The methods in the following embodiments, unless otherwise specified, are conventional methods in the art. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0040] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may also be implemented by those skilled in the art without these specific details.

[0041] like Figure 1-Figure 3 As shown, a special tool for lifting a screw compressor rotor includes a clamping mechanism 1, a hanging beam mechanism 2, an adjustment mechanism 3 and a transmission assembly 4; the clamping mechanism 1 unit includes a clamping body 101, a plurality of bolts 102 and a turning nut 103; the hanging beam mechanism 2 includes a connecting column 201 and a crossbeam 202; the adjustment mechanism 3 includes an adjustment box 301 and a lifting point 302; the transmission assembly 4 includes a toothed track 401, a gear 402 and an adjustment handle 403.

[0042] A through opening 5 is opened in the middle of the clamping body 101, one side of the clamping body 101 is connected to a plurality of bolts 102 by threads, and the other side of the clamping body 101 is connected to a turntable nut 103, the turntable nut 103 rotates on the surface of the clamping body 101, and the turntable nut 103 is coaxially arranged with the through opening 5, and radial scale marks are arranged on the surface of the turntable nut 103.

[0043] A protective gasket 6 is disposed on one side of the clamping body 101 where the bolt 102 is disposed, and the protective gasket 6 is connected to the clamping body 101 .

[0044] The clamping mechanism 1 is the core part of the tool, and one side of the clamping body 101 includes a threaded connection bolt 102 to fasten the rotor 8, so that the rotor 8 and the tool form a whole, ensuring the stability of the rotor 8 during the hoisting process, wherein the protective gasket 6 is between the rotor 8 and the clamping body 101, and is used to protect the contact surface between the two to avoid damage. A through hole 5 is opened in the middle of the clamping body 101 for passing the end of the rotor 8, and the end of the rotor 8 is connected to the turntable nut 103 on the other side of the clamping body 101, and the turntable nut 103 rotates and cooperates on the surface of the clamping body 101, so that maintenance personnel can easily adjust the rotation angle of the rotor 8 using the turntable nut 103, and the radial scale marks set on its surface can realize precise control of the angle of the rotor 8, providing convenience for maintenance and hoisting operations.

[0045] The connecting column 201 is connected to the upper part of the clamping body 101 , the crossbeam 202 is connected to the upper part of the connecting column 201 , and the crossbeam 202 is located on the side of the clamping body 101 where the bolt 102 is set, and a limiting end is set at one end of the crossbeam 202 away from the connecting column 201 .

[0046] The adjustment box 301 is sleeved on the beam 202, the surface of the beam 202 is connected to the track 401, the inside of the adjustment box 301 is connected to the gear 402, the track 401 and the gear 402 are meshed, the adjustment box 301 and the beam 202 are slidably matched through the gear 402 and the track 401, and a displacement scale mark is set on the surface of the beam 202.

[0047] An adjustment handle 403 is arranged outside the adjustment box 301 , and the adjustment handle 403 rotates and cooperates on the surface of the adjustment box. The adjustment handle 403 is connected to the gear 402 through the adjustment box, and an anti-skid layer is arranged outside the adjustment handle 403 , and the anti-skid layer is connected to the adjustment handle 403 .

[0048] A hoisting point 302 is arranged on the top of the outer side of the regulating box, and the hoisting point 302 and the regulating box are an integrated structure.

[0049] The beam mechanism 2 and the adjustment mechanism 3 together constitute the support and adjustment system of the tool, ensuring the stability and operational flexibility of the entire lifting process. The connecting column 201 of the beam mechanism 2 is located at the upper part of the clamping body 101 and is fixedly connected to the clamping mechanism 1. The upper part of the connecting column 201 is connected to the crossbeam 202. The crossbeam 202 extends laterally and is located on one side of the bolt 102 of the clamping body 101, forming the main load-bearing structure. The adjustment box 301 is sleeved on the crossbeam 202 and meshes with the toothed track 401 on the surface of the crossbeam 202 through the internal gear 402 to achieve smooth sliding adjustment. Displacement scale marks are set on the surface of the crossbeam 202 to make the position adjustment of the adjustment box 301 more intuitive and accurate. At the same time, a limit end is set at the other end of the crossbeam 202 to effectively prevent the adjustment box 301 from detaching from the crossbeam 202 during the sliding process to ensure safety. An adjustment handle 403 is provided on the outside of the adjustment box 301, and the handle is connected to the gear 402. The adjustment box 301 can be controlled to slide along the beam 202 by rotating the handle. The handle is coated with an anti-slip layer to improve the comfort and safety of operation. In addition, a hoisting point 302 is integrated on the top of the adjustment box 301 for connecting a lifting device, so that the tool can flexibly adjust the position of the hoisting point 302 under different working conditions to ensure the balance and accuracy of the hoisting.

[0050] The tool is easy to install and disassemble, and only two operators are needed to complete the entire maintenance process. It is especially suitable for hoisting operations in narrow or complex environments.

[0051] Step 1: fix the connecting plate of the screw compressor rotor 8 to the clamping body 101 through several bolts 102, and then connect the end of the screw compressor rotor 8 to the turntable nut 103; Step 2: form the rotor 8 and the lifting tool into a whole through the clamping mechanism 1; Step 3: use the hook of a small lifting hoist to hang the lifting point 302 on the adjustment box 301 to form a lifting preparation state; Step 4: turn the adjustment handle 403 to drive the gear 402 to move along the track 401, thereby changing the position of the adjustment box 301 on the beam 202, so that the lifting point 302 is aligned with the center of gravity of the rotor 8 to ensure that the rotor 8 remains horizontal during the lifting process; Step 5: turn the turntable nut 103 to drive the rotor 8 to rotate and gradually withdraw it from the screw compressor cavity.

[0052] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A special tool for lifting a screw compressor rotor, characterized by: The special tool for hoisting a screw compressor rotor comprises a clamping mechanism (1), a hanging beam mechanism (2), an adjustment mechanism (3) and a transmission assembly (4); The clamping mechanism (1) unit comprises a clamping body (101), a plurality of bolts (102) and a turning nut (103); The beam suspension mechanism (2) comprises a connecting column (201) and a crossbeam (202); The adjustment mechanism (3) comprises an adjustment box (301) and a hanging point (302); The transmission assembly (4) comprises a toothed track (401), a gear (402) and an adjustment handle (403); One side of the clamping body (101) is connected to the plurality of bolts (102) via threads, and the other side of the clamping body (101) is connected to a turntable nut (103), and the turntable nut (103) is rotatably fitted on the surface of the clamping body (101); The connecting column (201) is connected to the upper part of the clamping body (101), the crossbeam (202) is connected to the upper part of the connecting column (201), and the crossbeam (202) is located on the side of the clamping body (101) where the bolt (102) is provided; The adjustment box (301) is sleeved on the crossbeam (202); the surface of the crossbeam (202) is connected to the track (401); the interior of the adjustment box (301) is connected to the gear (402); the track (401) and the gear (402) are meshed; the adjustment box (301) and the crossbeam (202) are slidably matched via the gear (402) and the track (401); an adjustment handle (403) is arranged on the outside of the adjustment box (301); the adjustment handle (403) is rotatably matched on the surface of the adjustment box; the adjustment handle (403) is connected to the gear (402) via the adjustment box; and a hoisting point (302) is arranged on the top of the outside of the adjustment box.

2. The special tool for lifting the screw compressor rotor according to claim 1, characterized in that: A through opening (5) is provided in the middle of the clamping body (101), and the through opening (5) and the turning nut (103) are coaxially arranged.

3. The special tool for lifting the screw compressor rotor according to claim 1, characterized in that: The hoisting point (302) and the regulating box are an integrated structure.

4. The special tool for lifting the screw compressor rotor according to claim 1, characterized in that: An anti-skid layer is disposed on the outside of the adjustment handle (403), and the anti-skid layer is connected to the adjustment handle (403).

5. The special tool for lifting the screw compressor rotor according to claim 1, characterized in that: The surface of the crossbeam (202) is provided with displacement scale marks.

6. The special tool for hoisting a screw compressor rotor according to claim 2, characterized in that: The surface of the turning nut (103) is provided with radial scale marks.

7. The special tool for hoisting a screw compressor rotor according to claim 2, characterized in that: A protective gasket (6) is arranged on one side of the clamping body (101) on which the bolt (102) is arranged, and the protective gasket (6) is connected to the clamping body (101).

8. The special tool for hoisting a screw compressor rotor according to claim 5, characterized in that: A limiting end (7) is provided at one end of the crossbeam (202) away from the connecting column (201).

9. An operating method for a special tool for hoisting a screw compressor rotor, characterized in that: The operation method of the special tool for lifting the screw compressor rotor includes: S1, fixing the connecting plate of the screw compressor rotor to the clamping body (101) by means of a plurality of bolts (102), and then connecting the end of the screw compressor rotor to the turning nut (103); S2, forming the rotor and the lifting tool into a whole through the clamping mechanism (1); S3, using the hook of the small hoisting hoist to hook the lifting point (302) on the adjustment box (301), forming a lifting preparation state; S4, rotating the adjustment handle (403) to drive the gear (402) to move along the track (401), thereby changing the position of the adjustment box (301) on the crossbeam (202) so that the lifting point (302) is aligned with the center of gravity of the rotor to ensure that the rotor remains horizontal during the lifting process; S5. Turn the turning nut (103) to drive the rotor to rotate and gradually withdraw it from the screw compressor cavity.

Images