Screw compressor rotor clamp

Abstract

The utility model relates to the technical field of compressors, and discloses a screw compressor rotor clamp which comprises a base plate, two sets of limiting grooves are formed in the left side and the right side of the top of the base plate respectively, clamping plates are arranged on the left side and the right side of the top of the base plate respectively, and clamping bins are formed in the clamping plates. According to the utility model, the ratchet wheel is matched with the brake block, so that the main knob rotates in one direction, the fixed roller is automatically locked and prevented from loosening after completing the clamping operation, and the main knob can reversely rotate and a rotor can be disassembled by screwing the reset knob, and compared with a traditional device, the device has the advantages that the device is simple in structure and convenient to use. According to the device, the two ends of the rotor are clamped in the circumferential direction through the fixing rollers, the rotor is prevented from being damaged, the rotor is automatically locked after being clamped through the one-way transmission characteristic of the ratchet wheel, the clamping effect and the clamping efficiency are improved, and the workload is relieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of compressor, more specifically, the utility model relates to a screw compressor rotor clamp. BACKGROUND

[0002] Screw compressor is a kind of compression equipment widely used in industrial field, and the length and diameter of rotor determine the discharge capacity and discharge pressure of compressor in compression process, the longer the rotor is, the higher the pressure is, and the greater the diameter of rotor is, the greater the flow is.

[0003] The rotor of screw compressor, namely female and male screw rods, is the main component of screw compressor, and the two rotors have a concave tooth, they rotate reversely, and the gap between rotors and between casing and rotors is very small, with the continuous rotation of rotors, the compression chamber volume decreases, and the oil-gas mixture is compressed to exhaust port until being discharged, completing the compression function.

[0004] At present, the rotor of screw compressor has high processing precision requirement, in order to ensure the accuracy of processing, the clamp is usually used to fix the rotor, however, the current rotor clamp, for example, the application number CN202121573338.8 "rotor fixing clamp for recycling of refrigeration compressor rotor", the device makes two movable blocks close to or away from each other, and then drives two arc-shaped plates to close to or away from each other through connecting block, so as to be suitable for rotors of different sizes, however, the weight of rotor is heavy, this clamping mode needs to exert a large amount of force on both ends of rotor, which is easy to cause damage to rotor, and the fixing effect is poor, so it needs to be improved and optimized. UTILITY MODEL CONTENTS

[0005] In order to overcome the defects of prior art, the utility model provides a screw compressor rotor clamp, which has the advantages of convenience, speediness and stability.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a screw compressor rotor clamp, comprising a base plate, two groups of limiting grooves are formed in the left and right sides of the top of the base plate, clamping plates are arranged on the left and right sides of the top of the base plate, a clamping bin is formed in the inside of the clamping plate, and a fixed roller is movably arranged in the inside of the clamping bin.

[0007] The outer side of the clamping plate is rotationally installed with a rotating disc, four groups of arc-shaped grooves are formed in the interior of the rotating disc, a straight groove is formed in the outer wall of the clamping plate, a main knob is rotationally installed on the outer wall of the clamping plate, the main knob is fixedly connected with the rotating disc, a transmission rod is fixedly installed at one end of the fixed roller, the transmission rod penetrates into the interior of the main knob through the straight groove and the arc-shaped groove, a transmission groove is formed in the interior of the main knob, a ratchet wheel is rotationally installed in the interior of the transmission groove, one end of the ratchet wheel penetrates through the rotating disc and is fixedly installed on the outer wall of the clamping plate, and a brake block is rotationally installed in the interior of the transmission groove and elastically connected with the inner wall of the transmission groove through a leaf spring.

[0008] As a preferred technical scheme of the utility model, the bottom of the left and right two groups of clamping plates is fixedly installed with a connecting block, and the connecting block is movably installed in the interior of the limiting groove.

[0009] The interior of the base plate is formed with a centering groove, the left and right sides of the centering groove are movably installed with movable plates, the top of the movable plate is fixedly connected with the connecting block, one end of the movable plate is fixedly installed with a rack, and the interior of the centering groove is rotationally installed with a gear.

[0010] As a preferred technical scheme of the utility model, the outer wall of the main knob is rotationally installed with a reset knob, one end of the reset knob penetrates into the interior of the transmission groove and is fixedly connected with the brake block.

[0011] As a preferred technical scheme of the utility model, the interior of the four groups of straight grooves is provided with springs, and the one end of the transmission rod and the inner wall of the straight groove are elastically connected through the springs.

[0012] As a preferred technical scheme of the utility model, the inner wall of the base plate is rotationally installed with a screw rod, and the outer wall of the base plate is rotationally installed with a knob, and the knob is fixedly connected with the screw rod.

[0013] As a preferred technical scheme of the utility model, one end of the screw rod penetrates into the interior of the movable plate, and the screw rod is threadedly sleeved with the movable plate.

[0014] As a preferred technical scheme of the utility model, the straight groove and the transmission rod are four groups, and the positions of the four groups of straight grooves and arc-shaped grooves correspond to each other.

[0015] Compared with the prior art, the utility model has the advantages of the following:

[0016] 1. The utility model discloses a one -way rotation is carried out to main knob through the cooperation of ratchet and brake block, further makes the fixed roller after completing the clamping operation, automatic locking, prevents the loosening of fixed roller, through the mode of screwing reset knob, the reverse rotation of main knob is carried out, and the rotor is removed, compared with traditional device, the device carries out the clamping of the two ends of rotor in the circumferential direction through the fixed roller, prevents the rotor from being damaged, and the automatic locking of rotor clamping is carried out through the one -way transmission characteristic of ratchet, improve the clamping effect and clamping efficiency, and alleviate the work burden.

[0017] 2. The utility model discloses the rotation of knob makes screw rod drive movable board displacement, through the setting of the gear in the centering groove, make two groups of movable board drive the synchronous displacement of the clamping plate to the center of base plate, compared with traditional device, the device can adjust the clamping plate spacing, make it applicable to various models of rotor, and can ensure that the rotor is always located at the center position of base plate, improve the operation precision of subsequent processing to the rotor, improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic drawing of the utility model;

[0019] Figure 2 It is the structure schematic drawing of the utility model centering groove;

[0020] Figure 3 It is the structure schematic drawing of the utility model movable board;

[0021] Figure 4 It is the structure schematic drawing of the utility model rotary disc split structure;

[0022] Figure 5 It is the structure schematic drawing of the utility model transmission groove;

[0023] Figure 6 It is the structure schematic drawing of the utility model straight groove.

[0024] In the drawing: 1, base plate; 2, limit groove; 3, clamping plate; 4, clamping bin; 5, fixed roller; 6, straight groove; 7, transmission rod; 8, rotary disc; 9, arc groove; 10, ratchet; 11, spring; 12, main knob; 13, transmission groove; 14, brake block; 15, leaf spring; 16, reset knob; 17, connecting block; 18, movable board; 19, centering groove; 20, rack; 21, gear; 22, screw rod; 23, knob. DETAILED DESCRIPTION

[0025] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] As shown in Figures 1 to 6 The utility model provides a screw compressor rotor clamp, including base plate 1, the left and right sides of base plate 1 top are all seted up two groups of limit slot 2, the left and right sides of base plate 1 top are all provided with clamping plate 3, the inside of clamping plate 3 is seted up clamping bin 4, the inside of clamping bin 4 is movably provided with fixed roller 5;

[0027] The outside of clamping plate 3 is rotatably installed with rotating disc 8, and the inside of rotating disc 8 is provided with four groups of arc grooves 9; a straight groove 6 is formed in the outer wall of the clamping plate 3; a main knob 12 is rotatably installed on the outer wall of the clamping plate 3; the main knob 12 is fixedly connected with the rotating disc 8; a transmission rod 7 is fixedly installed at one end of the fixed roller 5; one end of the transmission rod 7 penetrates into the inside of the main knob 12 through the straight groove 6 and the arc grooves 9; a transmission groove 13 is formed in the inside of the main knob 12; a ratchet wheel 10 is rotatably installed in the inside of the transmission groove 13; one end of the ratchet wheel 10 penetrates through the rotating disc 8 and is fixedly installed on the outer wall of the clamping plate 3; a brake block 14 is rotatably installed in the inside of the transmission groove 13; the brake block 14 and the inner wall of the transmission groove 13 are elastically connected through a leaf spring 15.

[0028] When it is necessary to fix and clamp the compressor rotor, the staff first places the left and right ends of the rotor in the clamping bin 4 of the two clamping plates 3; if the distance between the two clamping plates 3 is too far, the staff rotates the knob 23 to rotate the screw rod 22, the rotation of the screw rod 22 drives the displacement of the movable plate 18 which is threadedly connected with the screw rod 22, further the connecting block 17 on the top of the movable plate 18 will drive the displacement of the clamping plate 3 along the limit slot 2; when the movable plate 18 is displaced, the left movable plate 18 drives the displacement of the rack 20, further the rack 20 drives the rotation of the gear 21, the rotation of the gear 21 drives the synchronous displacement of the left and right clamping plates 3 to the center of the base plate 1, the adjustment of the distance is completed, and it can be ensured that the rotor is located at the center position of the base plate 1, then the staff rotates the main knob 12 to drive the rotation of the rotating disc 8, the rotation of the rotating disc 8 drives the rotation of the ratchet wheel 10, the rotation of the ratchet wheel 10 drives the rotation of the brake block 14, and the brake block 14 is in contact with the inner wall of the transmission groove 13 to drive the rotation of the transmission rod 7, the rotation of the transmission rod 7 drives the rotation of the fixed roller 5, and the fixed roller 5 is in contact with the rotor to fix and clamp the rotor. Figure 4 And Figure 5The left main knob 12 is shown to demonstrate, the staff clockwise rotate the main knob 12, the main knob 12 and the rotating disc 8 fixed connection, make the arc slot 9 inside the rotating disc 8 drive transmission rod 7 displacement, however the movement path of transmission rod 7 is limited by straight slot 6, make transmission rod 7 along straight slot 6 to the center of clamping bin 4 displacement, further four groups of fixed roller 5 will the both ends of the rotor clamping, when the main knob 12 clockwise rotation, the brake block 14 inside the transmission slot 13 will due to the elastic potential of leaf spring 15 and the mutual abutment of ratchet 10, and through the one-way transmission performance of ratchet 10, make brake block 14 slide on the outer wall of ratchet 10, after clamping, the staff release the main knob 12, at this time the elastic potential of spring 11 will drive fixed roller 5 and transmission rod 7 reset, further the main knob 12 is subjected to a counterclockwise reverse rotation force, however the brake block 14 and ratchet 10 mutually abut, make the rotation of main knob 12 is stopped, after the completion of processing or cleaning operation, the staff rotate reset knob 16, make brake block 14 lift, and lose the brake of brake block 14 and ratchet 10, make the staff can rotate the main knob 12 counterclockwise, complete the rotor disassembly.

[0029] Through the cooperation of ratchet 10 and brake block 14, the main knob 12 is unidirectional rotation, further make the fixed roller 5 after completing the clamping operation, automatically lock, prevent the loosening of fixed roller 5, through the way of twisting reset knob 16, make the main knob 12 can be reversed rotation, remove the rotor, compared with the traditional device, the device is through the fixed roller 5 to the both ends of the rotor in the circumferential direction clamping, prevent the rotor damage, through the one-way transmission characteristics of ratchet 10, make the rotor clamping automatically lock after, improve the clamping effect and clamping efficiency, reduce the work burden.

[0030] Among them, the bottom of the left and right two groups of clamping plates 3 is fixedly installed with connecting block 17, the connecting block 17 is movably installed in the inside of limiting groove 2;

[0031] The inside of base plate 1 is provided with centering groove 19, the left and right sides of centering groove 19 are movably installed with movable plate 18, the top of movable plate 18 is fixedly connected with connecting block 17, one end of movable plate 18 is fixedly installed with rack 20, the inside of centering groove 19 is rotatably installed with gear 21, the front and back sides of two groups of rack 20 and gear 21 are engaged with each other.

[0032] The staff first places the left and right ends of the rotor in the clamping bin 4 of the two sets of clamping plates 3. If the distance between the two sets of clamping plates 3 is too far, the staff rotates the knob 23 to rotate the screw rod 22. The rotation of the screw rod 22 drives the displacement of the movable plate 18 which is threadedly connected with the screw rod 22. Further, the connecting block 17 at the top of the movable plate 18 will drive the clamping plate 3 to displace along the limiting groove 2. When the movable plate 18 is displaced, the left movable plate 18 drives the displacement of the rack 20. Further, the rack 20 drives the rotation of the gear 21. The rotation of the gear 21 makes the left and right two sets of clamping plates 3 synchronously displace towards the center of the base plate 1. The adjustment of the distance is completed, and it can be ensured that the rotor is located at the center position of the base plate 1.

[0033] The rotation of the knob 23 drives the displacement of the screw rod 22 and the movable plate 18. The setting of the gear 21 in the centering groove 19 makes the two sets of movable plates 18 drive the clamping plates 3 to synchronously displace towards the center of the base plate 1. Compared with the traditional device, the device can adjust the distance between the clamping plates 3, so it can be suitable for rotors of various models. It can also ensure that the rotor is always located at the center position of the base plate 1, which improves the operation precision of subsequent processing of the rotor and improves the work efficiency.

[0034] The outer wall of the main knob 12 is rotatably installed with a reset knob 16. One end of the reset knob 16 penetrates into the transmission groove 13 and is fixedly connected with the brake block 14.

[0035] The staff rotates the reset knob 16 to lift the brake block 14, so that the brake of the brake block 14 and the ratchet wheel 10 is lost. The staff can rotate the main knob 12 counterclockwise.

[0036] The inner walls of the four sets of straight grooves 6 are provided with springs 11. One end of the transmission rod 7 is elastically connected with the inner wall of the straight groove 6 through the spring 11.

[0037] After clamping, the staff releases the main knob 12. At this time, the elastic potential energy of the spring 11 drives the fixed roller 5 and the transmission rod 7 to reset.

[0038] The inner wall of the base plate 1 is rotatably installed with a screw rod 22. The outer wall of the base plate 1 is rotatably installed with a knob 23. The knob 23 is fixedly connected with the screw rod 22.

[0039] One end of the screw rod 22 penetrates into the inner part of the movable plate 18. The screw rod 22 is threadedly connected with the movable plate 18.

[0040] The rotation of the knob 23 drives the rotation of the screw rod 22, which further drives the displacement of the movable plate 18.

[0041] There are four sets of straight grooves 6 and transmission rods 7. The positions of the four sets of straight grooves 6 correspond to the positions of the arc-shaped grooves 9.

[0042] The arc-shaped slot 9 is responsible for transmission, and the straight slot 6 is responsible for limiting the movement path of the transmission rod 7.

[0043] The working principle and use process of the utility model are as follows:

[0044] When the compressor rotor needs to be fixed and clamped, the staff first places the left and right ends of the rotor in the clamping bin 4 of the two sets of clamping plates 3, if the distance between the two sets of clamping plates 3 is too far, the staff rotates the knob 23 to make the screw rod 22 rotate, the rotation of the screw rod 22 drives the displacement of the movable plate 18 which is threadedly connected with the screw rod 22, further, the connecting block 17 on the top of the movable plate 18 will drive the clamping plate 3 to displace along the limiting groove 2, when the movable plate 18 displaces, the left movable plate 18 drives the displacement of the rack 20, further, the rack 20 drives the rotation of the gear 21, the rotation of the gear 21 makes the left and right sets of clamping plates 3 synchronously displace to the center of the base plate 1, the adjustment of the distance is completed, and it can be ensured that the rotor is located at the center position of the base plate 1, then the staff rotates the main knob 12 to clamp the rotor, and the staff rotates the left main knob 12 shown in the figure to demonstrate, the staff rotates the main knob 12 clockwise, the main knob 12 and the rotating disc 8 are fixedly connected, so that the arc-shaped slot 9 in the rotating disc 8 drives the displacement of the transmission rod 7, however, the movement path of the transmission rod 7 is limited by the straight slot 6, so that the transmission rod 7 displaces to the center of the clamping bin 4 along the straight slot 6, further, the four sets of fixed rollers 5 clamp the two ends of the rotor, when the main knob 12 rotates clockwise, the brake block 14 in the transmission slot 13 will abut against the elastic potential of the leaf spring 15 and the ratchet wheel 10, and through the one-way transmission performance of the ratchet wheel 10, the brake block 14 slides on the outer wall of the ratchet wheel 10, after clamping, the staff releases the main knob 12, at this time, the elastic potential of the spring 11 will drive the fixed rollers 5 and the transmission rod 7 to reset, further, the main knob 12 is subjected to a counterclockwise reverse rotating force, however, the brake block 14 and the ratchet wheel 10 abut against each other, so that the rotation of the main knob 12 is stopped, after the machining or cleaning operation is completed, the staff rotates the reset knob 16 to make the brake block 14 lift up, and the brake of the brake block 14 and the ratchet wheel 10 is lost, so that the staff can rotate the main knob 12 counterclockwise, and the rotor is disassembled. Figure 4 and Figure 5 The staff rotates the main knob 12 clockwise to clamp the rotor, and the staff rotates the left main knob 12 shown in the figure to demonstrate, the staff rotates the main knob 12 clockwise, the main knob 12 and the rotating disc 8 are fixedly connected, so that the arc-shaped slot 9 in the rotating disc 8 drives the displacement of the transmission rod 7, however, the movement path of the transmission rod 7 is limited by the straight slot 6, so that the transmission rod 7 displaces to the center of the clamping bin 4 along the straight slot 6, further, the four sets of fixed rollers 5 clamp the two ends of the rotor, when the main knob 12 rotates clockwise, the brake block 14 in the transmission slot 13 will abut against the elastic potential of the leaf spring 15 and the ratchet wheel 10, and through the one-way transmission performance of the ratchet wheel 10, the brake block 14 slides on the outer wall of the ratchet wheel 10, after clamping, the staff releases the main knob 12, at this time, the elastic potential of the spring 11 will drive the fixed rollers 5 and the transmission rod 7 to reset, further, the main knob 12 is subjected to a counterclockwise reverse rotating force, however, the brake block 14 and the ratchet wheel 10 abut against each other, so that the rotation of the main knob 12 is stopped, after the machining or cleaning operation is completed, the staff rotates the reset knob 16 to make the brake block 14 lift up, and the brake of the brake block 14 and the ratchet wheel 10 is lost, so that the staff can rotate the main knob 12 counterclockwise, and the rotor is disassembled.

[0045] It should be noted that in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0046] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screw compressor rotor clamp comprising a base plate (1), characterized in that: Two groups of limiting grooves (2) are arranged on the left and right sides of the top of the substrate (1), and clamping plates (3) are arranged on the left and right sides of the top of the substrate (1), the inside of the clamping plate (3) is provided with a clamping bin (4), and the inside of the clamping bin (4) is movably provided with a fixed roller (5). A rotating disc (8) is rotatably installed on the outer side of the clamping plate (3), four groups of arc-shaped grooves (9) are arranged in the rotating disc (8), a straight groove (6) is arranged on the outer wall of the clamping plate (3), a main knob (12) is rotatably installed on the outer wall of the clamping plate (3), the main knob (12) is fixedly connected with the rotating disc (8), one end of the fixed roller (5) is fixedly installed with a transmission rod (7), one end of the transmission rod (7) penetrates into the inside of the main knob (12) through the straight groove (6) and the arc-shaped groove (9), a transmission groove (13) is arranged in the inside of the main knob (12), a ratchet wheel (10) is rotatably installed in the inside of the transmission groove (13), one end of the ratchet wheel (10) penetrates through the rotating disc (8) and is fixedly installed on the outer wall of the clamping plate (3), and a brake block (14) is rotatably installed in the inside of the transmission groove (13), and the brake block (14) and the inner wall of the transmission groove (13) are elastically connected through a leaf spring (15).

2. A screw compressor rotor clamp according to claim 1, characterized in that: The bottom of the left and right groups of clamping plates (3) is fixedly installed with a connecting block (17), and the connecting block (17) is movably installed in the inside of the limiting groove (2). The inside of the substrate (1) is provided with a centering groove (19), the left and right sides of the centering groove (19) are movably installed with movable plates (18), the top of the movable plate (18) is fixedly connected with the connecting block (17), one end of the movable plate (18) is fixedly installed with a rack (20), and the inside of the centering groove (19) is rotatably installed with a gear (21). The front and back sides of the two groups of racks (20) and gears (21) are meshed with each other.

3. A screw compressor rotor clamp according to claim 1, characterized in that: The outer wall of the main knob (12) is rotatably installed with a reset knob (16), one end of the reset knob (16) penetrates into the inside of the transmission groove (13) and is fixedly connected with the brake block (14).

4. A screw compressor rotor clamp according to claim 1, characterized in that: The inside of the four groups of straight grooves (6) is provided with springs (11), and one end of the transmission rod (7) and the inner wall of the straight groove (6) are elastically connected through the spring (11).

5. A screw compressor rotor clamp according to claim 2, characterized in that: The inner wall of the substrate (1) is rotatably installed with a screw rod (22), and the outer wall of the substrate (1) is rotatably installed with a knob (23), and the knob (23) is fixedly connected with the screw rod (22).

6. A screw compressor rotor clamp according to claim 5, characterized in that: One end of the screw rod (22) penetrates into the inside of the movable plate (18), and the screw rod (22) and the movable plate (18) are threadedly sleeved.

7. A screw compressor rotor clamp according to claim 1, characterized in that: The straight groove (6) and the transmission rod (7) are four groups, and the positions of the four groups of straight grooves (6) and arc-shaped grooves (9) correspond to each other.

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