Screw compressor rotor maintenance device

Abstract

The utility model discloses a screw compressor rotor overhauling device, which belongs to the technical field of screw compressor overhauling auxiliary equipment, and comprises a working table, a support rotating mechanism and a connecting rod adjusting mechanism, at least one group of rollers is connected with the workbench through a connecting rod adjusting mechanism, and the connecting rod adjusting mechanism is used for driving the rollers to move transversely so as to adjust the distance between the two groups of rollers. By adopting the device, the screw compressor rotor can be conveniently overhauled, the device can be suitable for clamping and fixing screw rotors with different shaft diameters, the universality of the device is improved, the rotor can be conveniently rotated in the screw rotor overhauling process, and the maintenance efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw compressor maintenance auxiliary equipment, and more specifically to a screw compressor rotor maintenance device. Background Art

[0002] In the field of screw compressors, both oil-injected screw compressors and dry screw compressors require routine maintenance or overhaul after running for a period of time, and the screw rotor is the key maintenance object of the compressor. The maintenance of the screw rotor requires a full range of inspections, grinding, polishing, spraying and other treatments. The above different operations generally require corresponding maintenance tools to ensure that the operation can be carried out stably.

[0003] Existing screw rotor maintenance devices generally use hanging hoisting type fixtures or two-end ejector clamping type fixtures. However, the use of hanging hoisting type fixtures will make it difficult to fix the screw and inconvenient for maintenance operations. When using two-end ejector clamping type fixtures, when repairing large screw rotors, the clamping force is often insufficient, causing the screw rotor to fall. At the same time, some screw rotors cannot be clamped because they do not have a center hole. In actual operation, the screw rotor needs to be rotated circumferentially to perform all-round inspection, grinding, polishing, spraying, and other treatments. Existing screw rotor maintenance devices are not convenient for rotating the screw rotor, which reduces the efficiency of maintenance.

[0004] For example, the application case with Chinese patent application number 202320967288.4 discloses a pipe support device for municipal engineering construction, which includes a table, a support box, a first motor, a bidirectional screw, two limit rods and two clamping seats, wherein the support box is fixedly arranged on the top of the table, the first motor is fixedly arranged on the top of the table, the two ends of the bidirectional screw are movably connected to the left and right sides of the support box respectively, the two limit rods are fixedly arranged on the left and right sides of the support box, and the two limit rods are respectively located on the front and back sides of the bidirectional screw, the two clamping seats are respectively movably connected to the left and right sides of the bidirectional screw and the two limit rods, and a rotating structure is connected to the clamping seat. This patent adopts a two-end clamping method to support the pipeline, which may cause the pipeline to fall due to insufficient clamping force. Utility Model Content

[0005] In view of the above problems existing in the existing screw rotor maintenance device, the utility model provides a screw compressor rotor maintenance device. The device of the utility model can adapt to the clamping and fixing of screw rotors with different shaft diameters, improve the versatility of the device, and facilitate the rotation of the rotor during the screw rotor maintenance process, which is conducive to improving the maintenance efficiency.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0007] The utility model discloses a screw compressor rotor maintenance device, comprising a workbench, a supporting rotation mechanism and a connecting rod adjustment mechanism, wherein the supporting rotation mechanism comprises two groups of rollers which are rotatably mounted above the workbench and are arranged in parallel and spaced apart, at least one group of rollers is connected to the workbench through the connecting rod adjustment mechanism, and the connecting rod adjustment mechanism is used to drive the rollers to move laterally so as to adjust the distance between the two groups of rollers.

[0008] Furthermore, the two groups of rollers are rotatably mounted on two mutually parallel support shafts respectively, and the connecting rod adjustment mechanism is used to drive the support shaft to move so as to adjust the distance between the two groups of support shafts.

[0009] Furthermore, each supporting shaft is provided with a plurality of rollers distributed at intervals; the rollers can be slidably installed along the length direction of the supporting shaft.

[0010] Furthermore, the connecting rod adjustment mechanism includes a first connecting rod and a second connecting rod, wherein one end of the first connecting rod is rotatably connected to the support shaft, and the other end thereof is hingedly mounted on the workbench through a first support seat; one end of the second connecting rod is rotatably connected to the support shaft, and the other end thereof is hingedly mounted on the workbench through a second support seat, and the first support seat and the second support seat are respectively located on both sides of the support shaft and are relatively slidably mounted.

[0011] Furthermore, each group of rollers is connected to the workbench through two connecting rod adjustment mechanisms, and the two connecting rod adjustment mechanisms are respectively located at two ends of the supporting shaft.

[0012] Furthermore, the workbench is provided with a first connecting base plate and a second connecting base plate which are distributed in parallel and at intervals, the second connecting base plate is processed with a sliding groove extending in the transverse direction, and the first supporting seat is slidably installed in the sliding groove.

[0013] Furthermore, the side of the sliding groove is provided with a plurality of first pin holes distributed at intervals along its length direction, the first support seat is locked by pins in the first pin holes, and all the first pin holes are correspondingly numbered.

[0014] Furthermore, the first connecting base plate and the second connecting base plate are mounted on the workbench in a longitudinally relatively slidable manner to adjust the distance between them.

[0015] Furthermore, it also includes an axial adjustment mechanism, which includes a screw and a ball nut. The two ends of the screw are respectively rotatably mounted on the workbench through two support seats. The ball nut is threadedly mounted on the screw and fixedly connected to the first connecting base plate.

[0016] Furthermore, a fourth support seat is installed on the first connecting base plate, the ball nut is installed in the fourth support seat, the second support seat is sleeved on the screw rod and fixedly connected to the fourth support seat through a supporting sleeve, and the other end of the second connecting rod is rotatably connected to the supporting sleeve.

[0017] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0018] (1) The utility model adopts two sets of rollers arranged in parallel and spaced apart. The rollers are rotatably installed above the workbench. The connecting rod adjustment mechanism is used to adjust the distance between the two sets of rollers to limit the contact support of the outer surface of the screw rotor. On the one hand, this contact support method has a large support area, many force points, and stable support force, so it is not easy to fall, ensuring the safety of maintenance personnel; on the other hand, the distance between the two sets of rollers is adjustable, so that it can adapt to screw rotors of different shaft diameters to expand the adaptability of the device. In addition, it is easy to rotate the screw rotor during the maintenance process, which is conducive to improving the maintenance efficiency.

[0019] (2) The utility model adopts a connecting rod adjustment mechanism to adjust the distance between the two groups of rollers, and optimizes the structure and installation of the connecting rod adjustment mechanism. The first support seat and the second support seat are respectively located on both sides of the support shaft, and the first support seat is slidably installed in the sliding groove so as to move laterally relative to the second support seat; this design facilitates the adjustment of the distance between the two groups of rollers, and at the same time supports the support shaft, which is beneficial to the structural stability. In addition, the first pin holes are all provided with corresponding numbers, which facilitates the synchronous adjustment of multiple connecting rod adjustment mechanisms and improves the consistency of adjustment.

[0020] (3) The utility model further adds an axial adjustment mechanism, which adjusts the spacing between the first connecting base plate and the second connecting base plate along the axis of the drum through a screw rod and a ball nut assembly, thereby being able to adapt to screw rotors of different lengths to expand the adaptability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the screw compressor rotor maintenance device according to an embodiment of the utility model.

[0022] Figure 2 for Figure 1 main view.

[0023] Figure 3 for Figure 1 Right view of .

[0024] Figure 4 It is a schematic diagram of the local structure of the first connecting bottom plate in an embodiment of the utility model.

[0025] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at AA in the middle.

[0026] 1. Workbench; 101. Limit guide rail;

[0027] 2. Connecting rod adjustment mechanism; 201. First connecting rod; 202. Second connecting rod; 203. Support sleeve; 204. First supporting seat; 205. Second supporting seat; 206. First connecting bottom plate; 2061. Sliding groove; 2062. First pin hole; 2063. Second pin hole; 207. Second connecting bottom plate;

[0028] 3. Axial adjustment mechanism; 301. Adjustment hand wheel; 302. Screw rod; 303. Ball nut; 304. Third support seat; 305. Fourth support seat; 306. Fifth support seat;

[0029] 4. Supporting rotating mechanism; 401. Supporting shaft; 402. Roller; 403. Limiting nut. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so as to describe the embodiments of the present application described herein.

[0032] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. Moreover, in addition to being used to indicate orientation or positional relationships, some of the above terms may also be used to express other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to the specific circumstances.

[0033] Description of direction: In order to facilitate a clear and complete description of the present invention, "longitudinal, longitudinal" in the embodiments refer to "two directions located in the same horizontal plane and perpendicular to each other", among which "longitudinal" refers to "the direction of the axis of the roller 402" and "lateral" refers to "the direction perpendicular to the axis of the roller 402".

[0034] This embodiment provides a screw compressor rotor maintenance device, such as Figure 1 , Figure 3 As shown, it includes a workbench 1, a supporting rotation mechanism 4 and a connecting rod adjustment mechanism 2, wherein the supporting rotation mechanism 4 includes two groups of rollers 402 rotatably installed above the workbench 1 and arranged in parallel and spaced apart, at least one group of rollers 402 is connected to the workbench 1 through the connecting rod adjustment mechanism 2, and the connecting rod adjustment mechanism 2 is used to drive the rollers 402 to move laterally to adjust the distance between the two groups of rollers 402.

[0035] like Figure 1 As shown, the screw rotor is placed between two sets of rollers 402. At this time, the axes of the two sets of rollers 402 are parallel to the axes of the screw rotor. The two sets of rollers 402 limit the contact support of the outer surface of the screw rotor. This contact support method has a large support area, many force points, and stable support force, so it is not easy to fall, ensuring the safety of maintenance personnel. The distance between the two sets of rollers 402 is adjusted by the connecting rod adjustment mechanism 2, so as to adapt to screw rotors of different shaft diameters and models to expand the adaptability of the device. In addition, the roller 402 is rotatably installed above the workbench 1, which can facilitate the rotation of the rotor during the inspection of the screw rotor and improve the maintenance efficiency.

[0036] Specifically, the two groups of rollers 402 are rotatably mounted on two parallel support shafts 401 respectively, and the support shafts 401 are driven to move by the connecting rod adjustment mechanism 2 to achieve the two groups of support shafts 401 to move closer to or farther from each other, thereby adjusting the distance between the two groups of support shafts 401.

[0037] More specifically, each support shaft 401 is provided with a plurality of rollers 402 distributed at intervals, which, on the one hand, facilitates the rotation of the rollers 402; on the other hand, the rollers 402 can be slidably installed along the length direction of the support shaft 401, so that the support point of the rollers 402 on the screw rotor can be adjusted along the axial direction of the support shaft 401, thereby ensuring the support effect for screw rotors of different lengths.

[0038] As a preferred implementation method of the connecting rod adjustment mechanism 2, the connecting rod adjustment mechanism 2 includes a first connecting rod 201 and a second connecting rod 202, wherein one end of the first connecting rod 201 is rotatably connected to the support shaft 401, and the other end thereof is hingedly mounted on the workbench 1 through a first support seat 204; one end of the second connecting rod 202 is rotatably connected to the support shaft 401, and the other end thereof is hingedly mounted on the workbench 1 through a second support seat 205, the first support seat 204 and the second support seat 205 are respectively located on both sides of the support shaft 401, which is beneficial to the stability of the support, and the first support seat 204 and the second support seat 205 are relatively slidably installed to adjust the distance between the first support seat 204 and the second support seat 205, thereby changing the position of the support shaft 401.

[0039] Further preferably, each group of rollers 402 is connected to the workbench 1 via two connecting rod adjustment mechanisms 2. The two connecting rod adjustment mechanisms 2 are respectively located at both ends of the support shaft 401, supporting the support shaft 401, which is beneficial to the structural stability.

[0040] like Figure 3 , Figure 4 As shown, the workbench 1 is provided with a first connecting bottom plate 206 and a second connecting bottom plate 207 which are arranged in parallel and spaced apart. The first connecting bottom plate 206 and the second connecting bottom plate 207 are both processed with a sliding groove 2061 extending in the transverse direction, and the first supporting seat 204 is slidably installed in the sliding groove 2061. The first supporting seat 204 slides in the sliding groove 2061 to adjust the distance between the first supporting seat 204 and the second supporting seat 205.

[0041] It is further preferred that the side of the sliding groove 2061 is provided with a plurality of first pin holes 2062 distributed at intervals along its length direction, and a corresponding pin hole is opened in the first support seat 204, and a pin passes through the pin hole of the first support seat 204 and the first pin hole 2062 to lock the position of the first support seat 204 in the sliding groove 2061. The pin limiting method is adopted to facilitate the adjustment and locking of the position of the first support seat 204 in the sliding groove 2061. When the screw rotor is contact-supported, generally, the first support seats 204 in the four connecting rod adjustment mechanisms 2 are locked in the same position in the sliding groove 2061. Furthermore, the plurality of first pin holes 2062 are all provided with corresponding numbers. When the position of the first support seat 204 in one connecting rod adjustment mechanism 2 in the sliding groove 2061 is determined, the first support seats 204 in the four connecting rod adjustment mechanisms 2 are locked in the first pin holes 3012 with the same number. By identifying the number, the positions of the first support seats 204 in the remaining three connecting rod adjustment mechanisms 2 can be quickly determined.

[0042] In some preferred embodiments, the sliding groove 2061 is disposed on the outer sides of the first connecting base plate 206 and the second connecting base plate 207 , so as to avoid movement interference of the first supporting seat 204 in the two connecting rod adjustment mechanisms 2 located at the same end of the supporting shaft 401 .

[0043] In some embodiments, the first connecting bottom plate 206 and the second connecting bottom plate 207 are mounted on the workbench 1 in a longitudinally relatively slidable manner to adjust the distance between them, so that the device can adapt to screw rotors with a wider length range.

[0044] During the axial adjustment process, the first connecting base plate 206 and the second connecting base plate 207 move relative to each other in the longitudinal direction, driving the hinge points of the first connecting rod 201, the second connecting rod 202 and the support shaft 401 to change. In order to prevent the first connecting rod 201 and the second connecting rod 202 from falling off the end of the support shaft 401, a limit nut 403 is installed at the end of the support shaft 401.

[0045] Specifically, Figure 1 As shown, in this embodiment, the first connecting bottom plate 206 is slidably installed on the workbench 1, the second connecting bottom plate 207 is fixed on the workbench 1, and the first connecting bottom plate 206 approaches or moves away from the second connecting bottom plate 207 along the axis direction of the drum 402.

[0046] As a further preferred embodiment of this embodiment, Figure 2 , Figure 5 As shown, it also includes an axial adjustment mechanism 3, which includes a screw rod 302 and a ball nut 303. The two ends of the screw rod 302 are respectively rotatably mounted on the workbench 1 through two support seats (a third support seat 304 and a fifth support seat 306). The ball nut 303 is threadedly mounted on the middle part of the screw rod 302. The ball nut 303 is fixedly connected to the first connecting base plate 206. The adjusting hand wheel 301 is installed at the end of the screw rod 302, so that rotating the adjusting hand wheel 301 drives the first connecting base plate 206 to move relative to the second connecting base plate 207 to adjust the distance between the two.

[0047] In some embodiments, Figure 4 , Figure 5 As shown, a fourth support seat 305 is installed on the first connecting base plate 206, and the fourth support seat 305 is located between the third support seat 304 and the fifth support seat 306, and the ball nut 303 is installed in the fourth support seat 305. The second support seat 205 is sleeved on the screw rod 302 and is fixedly connected to the fourth support seat 305 through the support sleeve 203.

[0048] Specifically, the two ends of the support sleeve 203 are respectively installed in the second support seat 205 and the fourth support seat 305, the inner diameter of the support sleeve 203 is larger than the outer diameter of the screw rod 302, the screw rod 302 passes through the support sleeve 203, and the other end of the second connecting rod 202 is rotatably connected to the support sleeve 203. Preferably, the second connecting rods 202 in the two connecting rod adjustment mechanisms 2 located at the same end of the support shaft 401 are both hinged to the outer curved surface of the same support sleeve (203), thereby saving installation space.

[0049] Furthermore, a limiting guide rail 101 is provided on the outer side of the first connecting bottom plate 206 . The limiting guide rail 101 extends along the axis direction of the drum 402 . The limiting guide rail 101 guides the movement of the first connecting bottom plate 206 .

[0050] Furthermore, a second pin hole 2063 is formed in the first connection bottom plate 206. Preferably, the second pin holes 2063 are formed on both sides of the first connection bottom plate 206. Accordingly, a plurality of pin holes are formed in the workbench 1 at intervals along the movement direction of the limiting guide rail 101. The pins penetrate the pin holes and the second pin holes 2063 in the workbench 1 to limit the position of the first connection bottom plate 206 in the workbench 1.

[0051] As a further preferred solution of any technical solution of the embodiments of the utility model, the outer curved surface of the roller 402 is affixed with a soft material, such as sponge, so as to reduce the collision with the screw rotor.

[0052] The operation process of the screw compressor rotor maintenance device of the utility model is as follows: when repairing the screw rotor, first determine the shaft diameter and length of the screw rotor; rotate the adjusting hand wheel 301 to adjust the spacing between the first connecting base plate 206 and the second connecting base plate 207 through the threaded cooperation of the screw rod 302 and the ball nut 303 to adapt to the length of the screw rotor to be clamped, and then lock the first connecting base plate 206 on the workbench 1; adjust the position of the first support seat 204 in the sliding groove 2061 to adapt to the shaft diameter of the screw rotor to be clamped, and then lock the first support seat 204 in the sliding groove 2061; finally, hoist the screw rotor between the two sets of rollers 402.

[0053] With the utility model screw compressor rotor maintenance device, during the maintenance process, the roller 402 is rotatable, and the roller 402 drives the screw rotor to rotate, thereby performing a comprehensive maintenance on the screw rotor. The connecting rod adjustment mechanism 2 adjusts the spacing between the two groups of rollers 402 to adapt to screw rotors with different shaft diameters, and the axial adjustment mechanism 3 adjusts the spacing between the first connecting bottom plate 206 and the second connecting bottom plate 207 to adapt to screw rotors of different lengths, further improving the applicability of the screw compressor rotor maintenance device.

[0054] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A screw compressor rotor maintenance device, characterized in that: The invention comprises a workbench (1), a supporting rotation mechanism (4) and a connecting rod adjustment mechanism (2), wherein the supporting rotation mechanism (4) comprises two groups of rollers (402) which are rotatably mounted above the workbench (1) and are arranged in parallel and spaced apart, at least one group of rollers (402) is connected to the workbench (1) via the connecting rod adjustment mechanism (2), and the connecting rod adjustment mechanism (2) is used to drive the rollers (402) to move laterally so as to adjust the distance between the two groups of rollers (402).

2. The screw compressor rotor maintenance device according to claim 1, characterized in that: The two groups of rollers (402) are rotatably mounted on two mutually parallel support shafts (401) respectively, and the connecting rod adjustment mechanism (2) is used to drive the support shaft (401) to move so as to adjust the distance between the two groups of support shafts (401).

3. The screw compressor rotor maintenance device according to claim 2, characterized in that: Each support shaft (401) is provided with a plurality of rollers (402) distributed at intervals; the rollers (402) can be slidably installed along the length direction of the support shaft (401).

4. The screw compressor rotor maintenance device according to claim 2 or 3, characterized in that: The connecting rod adjustment mechanism (2) comprises a first connecting rod (201) and a second connecting rod (202), wherein one end of the first connecting rod (201) is rotatably connected to the support shaft (401), and the other end thereof is hingedly mounted on the workbench (1) via a first supporting seat (204); one end of the second connecting rod (202) is rotatably connected to the support shaft (401), and the other end thereof is hingedly mounted on the workbench (1) via a second supporting seat (205), and the first supporting seat (204) and the second supporting seat (205) are respectively located on both sides of the support shaft (401) and are relatively slidably mounted.

5. The screw compressor rotor maintenance device according to claim 4, characterized in that: Each group of rollers (402) is connected to the workbench (1) via two connecting rod adjustment mechanisms (2), and the two connecting rod adjustment mechanisms (2) are respectively located at two ends of the support shaft (401).

6. The screw compressor rotor maintenance device according to claim 5, characterized in that: The workbench (1) is provided with a first connecting base plate (206) and a second connecting base plate (207) which are arranged in parallel and spaced apart from each other. The first connecting base plate (206) and the second connecting base plate (207) are both processed with a sliding groove (2061) extending in the transverse direction, and the first supporting seat (204) is slidably mounted in the sliding groove (2061).

7. The screw compressor rotor maintenance device according to claim 6, characterized in that: The side edge of the sliding groove (2061) is provided with a plurality of first pin holes (2062) distributed at intervals along its length direction, and the first support seat (204) is locked by pins in the first pin holes (2062), and all the first pin holes (2062) are correspondingly numbered.

8. The screw compressor rotor maintenance device according to claim 6, characterized in that: The first connecting bottom plate (206) and the second connecting bottom plate (207) are mounted on the workbench (1) in a relatively slidable manner in the longitudinal direction so as to adjust the distance between the two.

9. The screw compressor rotor maintenance device according to claim 8, characterized in that: The invention also comprises an axial adjustment mechanism (3), wherein the axial adjustment mechanism (3) comprises a screw rod (302) and a ball nut (303), wherein the two ends of the screw rod (302) are rotatably mounted on the workbench (1) via two support seats, respectively, and the ball nut (303) is threadedly mounted on the screw rod (302) and fixedly connected to the first connecting base plate (206).

10. The screw compressor rotor maintenance device according to claim 9, characterized in that: A fourth support seat (305) is installed on the first connecting base plate (206), and a ball nut (303) is installed in the fourth support seat (305); the second support seat (205) is sleeved on the screw rod (302) and is fixedly connected to the fourth support seat (305) via a supporting sleeve (203), and the other end of the second connecting rod (202) is rotatably connected to the supporting sleeve (203).

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