Compressor assembling device

Abstract

The utility model discloses a gas compressor assembling device which comprises a pneumatic centering device, and a pneumatic pressing device is arranged above the pneumatic centering device. A bolt stretching amount measuring device is arranged between the pneumatic centering device and the pneumatic pressing device and comprises a guiding optical shaft, a bolt stretching amount measuring part and a first pre-tightening part, the guiding optical shaft is sleeved with the bolt stretching amount measuring part in a sliding mode, and the first pre-tightening part is connected with one end of the bolt stretching amount measuring part; the bolt stretching amount measuring part comprises a top end dial indicator measuring part and a bottom end top head measuring part, the top end dial indicator measuring part abuts against the top of a tension bolt in the gas compressor through a bolt top stop part, and the bottom end top head measuring part abuts against the bottom of the tension bolt in the gas compressor through a bolt bottom stop part; according to the utility model, the air compressor can be assisted to be assembled, and meanwhile, the stretching amount of the draw-in bolt can be accurately and conveniently measured in the process of screwing the draw-in bolt after the air compressor is assembled.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressor assembly and relates to a compressor assembly device. Background Art

[0002] The compressor is obtained by connecting the centrifugal impeller, multi-stage rotor, multi-stage stator, upper short shaft and lower short shaft through a number of circumferentially arranged tension bolts. During the initial assembly process, the tension bolts are in a non-tensioned state. When the centrifugal impeller, multi-stage rotor, multi-stage stator, upper short shaft and lower short shaft are assembled and the assembly clearance is tested and qualified, the tension bolts need to be tightened. In the prior art, the tightening degree of the tension bolts is judged only by the operator's tightening feel, and due to the narrow internal space of the compressor, after the compressor is assembled, it is difficult to directly detect the stretching amount of the tension bolts accurately through the existing linear measurement tools. This leads to large differences in the stretching amount of several tension bolts, which in turn causes an unbalanced distribution of the tensioning force on the compressor, which in turn causes problems such as noise when the compressor is working.

[0003] Therefore, in view of the problem in the prior art that the stretching amount of the tension bolt cannot be accurately measured after the compressor is assembled, the utility model discloses a compressor assembly device. Utility Model Content

[0004] The utility model aims to provide a compressor assembly device, which can assist the compressor in assembly and can accurately and conveniently measure the stretching amount of the tightening bolts during the process of screwing the tightening bolts after assembly.

[0005] The utility model is realized by the following technical solutions:

[0006] A compressor assembly device comprises a pneumatic centering device coaxially engaged with a lower short shaft portion of the compressor, a pneumatic pressing device coaxially pressed with an upper short shaft portion of the compressor is arranged above the pneumatic centering device; a bolt tension measuring device is arranged between the pneumatic centering device and the pneumatic pressing device, the bolt tension measuring device comprises a guide light axis, a bolt tension measuring part, and a first pre-tightening part, the bolt tension measuring part is slidably sleeved on the guide light axis, the first pre-tightening part is connected to one end of the bolt tension measuring part to provide a pre-tightening force to the bolt tension measuring part, the bolt tension measuring part comprises a top micrometer measuring part and a bottom head measuring part, the top micrometer measuring part is abutted against the top of the tensioning bolt inside the compressor through a bolt top stopper, and the bottom head measuring part is abutted against the bottom of the tensioning bolt inside the compressor through a bolt bottom stopper.

[0007] The pneumatic centering device is coaxially connected to the lower short shaft of the compressor to center and fix the compressor. At the same time, the pneumatic downward pressure device applies downward pressure to the upper short shaft of the compressor, thereby pre-tightening and fixing the compressor to avoid axial movement and circumferential rotation of the compressor during the subsequent measurement of the stretching amount of the tightening bolts.

[0008] After the compressor is fixed, the top micrometer measuring part and the bottom head measuring part can be synchronously slid along the guide optical axis, so that the measuring end of the top micrometer measuring part contacts the top end face of the tension bolt, and the measuring end of the bottom head measuring part contacts the bottom end face of the tension bolt, and then the first pre-tightening part is compressed to apply pressure to the bolt tension measurement part to ensure that the measuring end of the bottom head measuring part is pressed against the bottom end face of the tension bolt. Then, after the readings of the top micrometer measuring part and the bottom head measuring part are cleared, the compression bolt is tightened, and then the tension of the tension bolt can be accurately calculated through the readings of the top micrometer measuring part and the bottom head measuring part.

[0009] In order to better realize the utility model, further, the top stop part of the bolt includes a top limit plate, an adapter stop rod, a locking nut, and a second pre-tightening part. The top limit plate is coaxially sleeved on the outer side of the upper short shaft part, and an adapter hole is provided on the top limit plate corresponding to the top end of the tightening bolt. The adapter stop rod is inserted in the adapter hole, and the bottom end of the adapter stop rod is connected to the top end of the tightening bolt, and the top end of the adapter stop rod is abutted against the top micrometer measuring part; a second pre-tightening part is provided between the outer side of the adapter stop rod and the bottom end face of the top limit plate, and a locking nut is provided on the top external thread of the tightening bolt.

[0010] In order to better realize the utility model, further, the bottom stop portion of the bolt includes a bottom limiting plate, and a limiting hole is arranged on the bottom limiting plate corresponding to the bottom end of the tightening bolt.

[0011] In order to better realize the utility model, further, the top micrometer measuring part includes a top support arm and a top micrometer. One end of the top support arm is slidably connected to the guide light axis, and a top micrometer is linearly slidably arranged on the other end of the top support arm. The measuring column of the top micrometer corresponds to the top setting of the tightening bolt.

[0012] In order to better realize the utility model, further, the bottom end head measuring part includes a bottom end support arm and a bottom end head, one end of the bottom end support arm is slidably connected to the guide light axis, and a bottom end head is linearly slidably arranged on the other end of the bottom end support arm, and the bottom end head is arranged corresponding to the bottom of the tightening bolt.

[0013] In order to better realize the utility model, further, the pneumatic centering device includes a pneumatic chuck and a spline stop shaft. A spline stop shaft is clamped at the center of the pneumatic chuck, and a spline portion is provided at the top end of the spline stop shaft that is coaxially engaged with the lower short shaft portion of the compressor.

[0014] In order to better realize the utility model, further, the pneumatic centering device also includes a support ring, which is coaxially arranged on the outside of the spline stop shaft, and a plurality of locking pressure plates for pressing the outer edge of the bottom of the compressor are evenly arranged along the circumference of the support ring.

[0015] In order to better realize the utility model, further, the pneumatic downward pressure device includes a downward pressure cylinder, a pressure regulating valve, and a floating joint. The downward pressure cylinder is coaxially arranged above the upper short shaft portion of the compressor, and the end of the pressure rod of the downward pressure cylinder is provided with a floating joint coaxially crimped with the upper short shaft portion. The downward pressure cylinder is connected to the air source through the pressure regulating valve.

[0016] In order to better realize the utility model, it further includes a moving frame and a gantry frame. The top of the moving frame is provided with a platform for linear movement, and the top of the platform is provided with a pneumatic centering device; the gantry frame is provided with a pneumatic pressing device.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0018] (1) The utility model provides a pneumatic centering device to be coaxially connected with the lower short shaft of the compressor, and provides a pneumatic pressing device to press the upper short shaft of the compressor, thereby achieving stable positioning of the compressor, assisting in efficient assembly of the compressor, and avoiding excessive detection errors caused by the movement of the compressor during the subsequent detection of the tension of the tensioning bolts;

[0019] (2) The utility model provides a bolt tension measuring device, wherein the bottom end face of the tensioning bolt is tightened by the bottom head measuring part thereof, and the top end face of the tensioning bolt is tightened by the top micrometer measuring part thereof. Then, in the process of screwing the tensioning bolt, the tension of the tensioning bolt can be conveniently and accurately known through the reading of the top micrometer in the top micrometer measuring part, thereby controlling the tension of the tensioning bolt to be consistent, thereby ensuring the balance of the tensioning force on the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the compressor assembly device;

[0021] Figure 2 It is a schematic diagram of the structure of the stopper at the top of the bolt;

[0022] Figure 3It is a structural schematic diagram of the stopper at the bottom of the bolt;

[0023] Figure 4 It is a structural schematic diagram of a bolt tension measurement device;

[0024] Figure 5 It is a structural schematic diagram of the pneumatic centering device;

[0025] Figure 6 It is a structural schematic diagram of the pneumatic downward pressure device.

[0026] Among them: 1-mobile frame; 2-gantry; 3-pneumatic centering device; 4-pneumatic pressing device; 5-bolt tension measuring device; 6-bolt top stop; 7-bolt bottom stop; 31-pneumatic chuck; 32-spline stop shaft; 33-support ring; 34-locking pressure plate; 41-pressing cylinder; 42-floating joint; 51-guide light axis; 52-bolt tension measuring part; 53-first pre-tightening part; 61-top limit plate; 62-adapter stop rod; 63-locking nut; 64-second pre-tightening part; 71-bottom limit plate; 521-top support arm; 522-top micrometer; 523-bottom support arm; 524-bottom top head. DETAILED DESCRIPTION

[0027] The following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the utility model explicitly states otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0030] Terminology explanation section: The terms "install", "connect", "connect", "fixed" and so on in the present utility model should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements, or an interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0031] Embodiment 1:

[0032] A compressor assembly device of this embodiment, such as Figure 1-Figure 3 As shown, it includes a pneumatic centering device 3 coaxially engaged with the lower short shaft portion of the compressor, and a pneumatic pressing device 4 coaxially pressed with the upper short shaft portion of the compressor is arranged above the pneumatic centering device 3; a bolt tension measuring device 5 is arranged between the pneumatic centering device 3 and the pneumatic pressing device 4, and the bolt tension measuring device 5 includes a guide light axis 51, a bolt tension measuring part 52, and a first pre-tightening part 53. The bolt tension measuring part 52 is slidably sleeved on the guide light axis 51, and the first pre-tightening part 53 is connected to one end of the bolt tension measuring part 52 to provide a pre-tightening force to the bolt tension measuring part 52. The bolt tension measuring part 52 includes a top micrometer measuring part and a bottom head measuring part. The top micrometer measuring part and the top of the tensioning bolt inside the compressor are abutted by a bolt top stopper 6, and the bottom head measuring part and the bottom of the tensioning bolt inside the compressor are abutted by a bolt bottom stopper 7.

[0033] The compressor includes a coaxially arranged multi-stage stator and a multi-stage rotor, the multi-stage rotors are connected by tie rod bolts, and the upper and lower ends of the multi-stage rotor are respectively provided with an upper short shaft portion and a lower short shaft portion. After the multi-stage stator, the multi-stage rotor, the upper short shaft portion, the lower short shaft portion, and the tension bolts are assembled, the top ends of several tension bolts are stopped by the bolt top stopper 6, and the bottom ends of the tension bolts are stopped by the bolt bottom stopper 7 to prevent the tension bolts from moving.

[0034] The pneumatic centering device 3 is coaxially connected with the spline hole at the bottom end of the lower short shaft portion to center and position the mating component and prevent the mating component from rotating. Then, the pneumatic pressing device 4 applies downward pressure to the top of the upper short shaft portion to position and fix the assembly component. The top micrometer measuring part and the bottom head measuring part are slid along the guide light axis 51, so that the top micrometer measuring part and the bottom head measuring part respectively contact the top end face and the bottom end face of the tensioning bolt, and the first pre-tightening part 53 applies an upward pre-tightening force to the bottom head measuring part to ensure that the bottom head measuring part presses the bottom end face of the tensioning bolt. The readings of the top micrometer measuring part and the bottom head measuring part are cleared, and then the stretching nut is set on the external thread of the tensioning screw, the tensioning screw is clamped by a wrench, and then the stretching nut is screwed to stretch the tensioning screw. During the stretching process, the stretching amount of the tensioning screw can be accurately measured by the readings of the top micrometer measuring part and the bottom head measuring part.

[0035] Embodiment 2:

[0036] A compressor assembly device of this embodiment is improved on the basis of embodiment 1, such as Figure 2 As shown, the top stop part 6 of the bolt includes a top limit plate 61, an adapter stop rod 62, a locking nut 63, and a second pre-tightening part 64. The top limit plate 61 is coaxially sleeved on the outer side of the upper short shaft part. A transfer hole is provided on the top limit plate 61 corresponding to the top end of the tightening bolt. The adapter stop rod 62 is inserted in the transfer hole. The bottom end of the adapter stop rod 62 is connected to the top end of the tightening bolt, and the top end of the adapter stop rod 62 is abutted against the top micrometer measuring part; the second pre-tightening part 64 is provided between the outer side of the adapter stop rod 62 and the bottom end face of the top limit plate 61, and the locking nut 63 is threadedly sleeved on the top external thread of the tightening bolt.

[0037] A connecting hole is provided at the center of the top limit plate 61, and a keyway is provided on the hole wall of the connecting hole. The upper short shaft portion is circumferentially clamped with the keyway on the hole wall of the connecting hole through a flat key. After the top limit plate 61 is put on the outer side of the upper short shaft portion and in place, the top limit plate 61 is axially locked by a bearing locking nut. A plurality of transfer holes are provided on the top limit plate 61 along the circumferential direction corresponding to the positions of a plurality of circumferentially arranged tensioning bolts, and a transfer stop rod 62 is inserted into the transfer hole. A hexagonal head is provided at the bottom end of the transfer stop rod 62, and an inner hexagonal hole is provided at the top end of the tensioning bolt. The transfer stop rod 62 is connected to the top end of the tensioning bolt by the matching clamping of the hexagonal head and the inner hexagonal hole. The top end of the transfer stop rod 62 passes through the transfer hole upward and abuts against the top micrometer measuring part. The top outer side of the tension bolt is threadedly sleeved with a locking nut 63, and the bottom end face of the locking nut 63 contacts the top end face of the upper short shaft portion, and the tensioning screw can be stretched by screwing the locking nut 63. A second pre-tightening portion 64 is provided between the outer side of the transfer stop rod 62 and the bottom end face of the top limit plate 61, and a pre-tightening force is applied to the transfer stop rod 62 through the second pre-tightening portion 64 to ensure that the top end of the transfer stop rod 62 is tightly pressed against the top micrometer measuring portion.

[0038] Furthermore, the transfer stop rod 62 includes a stop torque head and a stop guide rod, the bottom end of the stop torque head is connected to the inner hexagonal hole at the top of the tension bolt through a hexagonal head, the top of the stop torque head is provided with an inner hexagonal hole, the bottom end of the stop guide rod is connected to the inner hexagonal hole through a hexagonal head, the top of the stop guide rod passes upward through the transfer hole and is tightly pressed against the top micrometer measuring part. A second pre-tightening portion 62 is provided between the top end surface of the stop torque head and the bottom end surface of the top limit plate 61, and is wound around the outside of the stop guide rod, and the second pre-tightening portion 62 is a pre-tightening spring.

[0039] like Figure 3 As shown, the bolt bottom stopper 7 includes a bottom limit plate 71, and a limit hole is arranged on the bottom limit plate 71 corresponding to the bottom end of the tensioning bolt. A stopper is arranged at the bottom end of the tensioning bolt, and the stopper is connected with the limit hole to stop the bottom end of the tensioning bolt.

[0040] The other parts of this embodiment are the same as those of Embodiment 1, and thus will not be described in detail.

[0041] Embodiment 3:

[0042] A compressor assembly device of this embodiment is improved on the basis of embodiment 1 or 2, such as Figure 4 As shown, the top micrometer measuring part includes a top support arm 521 and a top micrometer 522. One end of the top support arm 521 is slidably connected to the guide light axis 51, and the other end of the top support arm 521 is linearly slidably provided with a top micrometer 522. The measuring column of the top micrometer 522 corresponds to the top of the tightening bolt.

[0043] A connecting frame is provided at one end of the top support arm 521, and a mounting hole is provided on the connecting frame. A flange linear bearing is provided in the mounting hole. The inner hole of the flange linear bearing is connected to the guide light axis 51 in a sliding and rotational manner, so that the top support arm 521 can slide axially along the guide light axis 51 and can rotate circumferentially relative to the guide light axis 51. When it is not necessary to detect the stretching amount of the tensioning bolt, the top support arm 521 can be rotated in a direction away from the compressor to avoid occupying the operating space. When it is necessary to measure the stretching amount of the tensioning bolt, the top support arm 521 is rotated in a direction close to the compressor, so that the top micrometer 522 on the other end of the top support arm 521 slides to a position aligned with the adapter hole on the top limit plate 61.

[0044] Furthermore, a slide slot is provided on the top support arm 521, a slide seat is slidably provided in the slide slot, and a top micrometer 522 is provided on the slide seat. A tightening bolt is threadedly installed on the slide seat, and after the slide seat is adjusted to a proper position along the slide slot, the tightening bolt can be screwed so that the end of the tightening bolt tightens the end surface of the slide slot to fix the slide seat.

[0045] Furthermore, a vertical slide groove is provided on the connecting frame, and one end of the top support arm 521 is slidably connected to the vertical slide groove through a slider, and a tightening bolt is threadedly installed on the slider. After the slider is slid along the vertical slide groove and adjusted to a position, the tightening bolt can be screwed so that the end of the tightening bolt tightens the end surface of the vertical slide groove to fix the slider and the top support arm 521.

[0046] The other parts of this embodiment are the same as those of Embodiment 1 or 2, and thus will not be described in detail.

[0047] Embodiment 4:

[0048] A compressor assembly device of this embodiment is improved on the basis of any one of Embodiments 1-3, such as Figure 4 As shown, the bottom end head measuring part includes a bottom end support arm 523 and a bottom end head 524. One end of the bottom end support arm 523 is slidably connected to the guide light axis 51, and the other end of the bottom end support arm 523 is linearly slidably provided with a bottom end head 524, and the bottom end head 524 is arranged corresponding to the bottom of the tightening bolt.

[0049] A connecting frame is provided at one end of the bottom support arm 523, and a mounting hole is provided on the connecting frame. A flange linear bearing is provided in the mounting hole. The inner hole of the flange linear bearing is connected to the guide light axis 51 in a sliding and rotational manner, so that the bottom support arm 523 can slide axially along the guide light axis 51 and can rotate circumferentially relative to the guide light axis 51. When it is not necessary to detect the stretching amount of the tightening bolt, the bottom support arm 523 can be rotated in a direction away from the compressor to avoid occupying the operating space. When it is necessary to measure the stretching amount of the tightening bolt, the bottom support arm 523 is rotated in a direction close to the compressor, so that the bottom end head 524 on the other end of the bottom support arm 523 slides to a position aligned with the limit hole on the bottom limit plate 71.

[0050] Furthermore, a slide groove is provided on the bottom support arm 523, a slide seat is slidably provided in the slide groove, and a bottom end head 524 is provided on the slide seat. A tightening bolt is threadedly installed on the slide seat, and after the slide seat is adjusted to a position along the slide groove, the tightening bolt can be screwed so that the end of the tightening bolt tightens the end surface of the slide groove to fix the slide seat.

[0051] Furthermore, a vertical slide groove is provided on the connecting frame, and one end of the bottom support arm 523 is slidably connected to the vertical slide groove through a slider, and a tightening bolt is threadedly installed on the slider. After the slider is slid along the vertical slide groove and adjusted to a position, the tightening bolt can be screwed so that the end of the tightening bolt tightens the end surface of the vertical slide groove to fix the slider and the bottom support arm 523.

[0052] The other parts of this embodiment are the same as any one of Embodiments 1-3, so they are not described again.

[0053] Embodiment 5:

[0054] A compressor assembly device of this embodiment is improved on the basis of any one of Embodiments 1-4, such as Figure 5 As shown, the pneumatic centering device 3 includes a pneumatic chuck 31 and a spline stop shaft 32. The spline stop shaft 32 is clamped at the center of the pneumatic chuck 31, and the top end of the spline stop shaft 32 is provided with a spline portion coaxially engaged with the lower short shaft portion of the compressor.

[0055] The pneumatic chuck 31 is connected to the air source through a regulating valve, and the air flow pressure input to the pneumatic chuck 31 can be adjusted through the regulating valve, thereby adjusting the clamping load of the pneumatic chuck 31 on the spline stop shaft 32. The bottom end of the spline stop shaft 32 extends into the clamping hole of the pneumatic chuck 31 and is clamped and positioned. The top end of the spline stop shaft 32 is provided with a spline portion, which is correspondingly engaged with the spline hole at the bottom end of the lower short shaft portion to achieve centering and circumferential stop of the lower short shaft portion.

[0056] Furthermore, the pneumatic centering device 3 also includes a support ring 33, which is coaxially arranged on the outer side of the spline stop shaft 32, and a plurality of locking pressure plates 34 for pressing the outer edge of the bottom of the compressor are evenly arranged on the support ring 33 along the circumferential direction.

[0057] A support column is provided at the bottom of the support ring 33, and the support ring 33 is coaxially arranged on the outside of the spline stop shaft 32. The top of the support ring 33 is evenly distributed with locking plates 34 along the circumference. The flange at the bottom of the compressor casing is pressed downward by the locking plates 34 to further position and fix the compressor.

[0058] The other parts of this embodiment are the same as any one of Embodiments 1-4, so they are not described again.

[0059] Embodiment 6:

[0060] A compressor assembly device of this embodiment is improved on the basis of any one of Embodiments 1-5, such as Figure 6 As shown, the pneumatic downward pressure device 4 includes a downward pressure cylinder 41, a pressure regulating valve, and a floating joint 42. The downward pressure cylinder 41 is coaxially arranged above the upper short shaft portion of the compressor. The end of the pressure rod of the downward pressure cylinder 41 is provided with a floating joint 42 coaxially crimped with the upper short shaft portion. The downward pressure cylinder 41 is connected to the air source through the pressure regulating valve.

[0061] The regulating valve can be used to adjust the air flow pressure delivered to the downward pressure cylinder 41 by the air source, and then the downward pressure load of the pressure rod of the downward pressure cylinder 41 on the upper short shaft portion can be adjusted to ensure that the upper short shaft portion is firmly pressed while avoiding damage to the upper short shaft portion caused by excessive downward pressure load. The end of the downward pressure rod is coaxially crimped with the upper short shaft portion through a floating joint 42.

[0062] The other parts of this embodiment are the same as any one of Embodiments 1-5, so they are not described again.

[0063] Embodiment 7:

[0064] A compressor assembly device of this embodiment is improved on the basis of any one of Embodiments 1-6, such as Figure 1 As shown, it also includes a moving frame 1 and a gantry 2. The top of the moving frame 1 is provided with a platform for linear movement, and the top of the platform is provided with a pneumatic centering device 3; the gantry 2 is provided with a pneumatic pressing device 4.

[0065] Universal wheels are provided at the four corners of the bottom of the mobile frame 1 to facilitate the movement of the mobile frame 1. A linear guide is provided at the top of the mobile frame 1. A load-carrying slider is provided on the top of the linear guide. A platform is provided on the top of the load-carrying slider. A pneumatic centering device 3 is installed on the top of the platform through bolts. A gantry 2 is installed on the top of the mobile frame 1. A pneumatic pressing device 4 is provided on the top of the crossbeam of the gantry 2.

[0066] The other parts of this embodiment are the same as any one of Embodiments 1-6, so they are not described again.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present invention fall within the protection scope of the present invention.

Claims

1. A compressor assembly device, characterized in that: The invention comprises a pneumatic centering device (3) coaxially engaged with the lower short shaft of the compressor, and a pneumatic pressing device (4) coaxially pressed with the upper short shaft of the compressor is arranged above the pneumatic centering device (3); a bolt tension measuring device (5) is arranged between the pneumatic centering device (3) and the pneumatic pressing device (4), and the bolt tension measuring device (5) comprises a guide optical axis (51), a bolt tension measuring portion (52), and a first pre-tightening portion (53); the bolt tension measuring portion (52) is slidably sleeved On the guide light axis (51), the first pre-tightening portion (53) is connected to one end of the bolt tension measuring portion (52) to provide a pre-tightening force to the bolt tension measuring portion (52), the bolt tension measuring portion (52) comprising a top micrometer measuring portion and a bottom head measuring portion, the top micrometer measuring portion abuts against the top of the tensioning bolt inside the compressor via a bolt top stopper (6), and the bottom head measuring portion abuts against the bottom of the tensioning bolt inside the compressor via a bolt bottom stopper (7).

2. A compressor assembly device according to claim 1, characterized in that: The bolt top stop portion (6) comprises a top limit plate (61), an adapter stop rod (62), a locking nut (63), and a second pre-tightening portion (64); the top limit plate (61) is coaxially sleeved on the outer side of the upper short shaft portion; a transfer hole is provided on the top limit plate (61) corresponding to the top end of the tensioning bolt; a transfer stop rod (62) is inserted into the transfer hole; the bottom end of the transfer stop rod (62) is connected to the top end of the tensioning bolt; the top end of the transfer stop rod (62) is in contact with the top micrometer measuring portion; a second pre-tightening portion (64) is provided between the outer side of the transfer stop rod (62) and the bottom end surface of the top limit plate (61); a locking nut (63) is sleeved on the top external thread of the tensioning bolt.

3. A compressor assembly device according to claim 1, characterized in that: The bolt bottom stopper (7) comprises a bottom limiting plate (71), and a limiting hole is arranged on the bottom limiting plate (71) corresponding to the bottom end of the tensioning bolt.

4. A compressor assembly device according to claim 3, characterized in that: The top micrometer measuring part comprises a top support arm (521) and a top micrometer (522); one end of the top support arm (521) is slidably connected to the guide light axis (51); the other end of the top support arm (521) is provided with a top micrometer (522) for linear sliding; the gauge head measuring column of the top micrometer (522) is provided corresponding to the top of the tensioning bolt.

5. A compressor assembly device according to claim 3, characterized in that: The bottom end head measuring portion comprises a bottom end support arm (523) and a bottom end head (524); one end of the bottom end support arm (523) is slidably connected to the guide light axis (51); the other end of the bottom end support arm (523) is linearly slidably provided with a bottom end head (524); the bottom end head (524) is provided corresponding to the bottom of the tensioning bolt.

6. A compressor assembly device according to any one of claims 1 to 5, characterized in that: The pneumatic centering device (3) comprises a pneumatic chuck (31) and a spline stop shaft (32). The pneumatic chuck (31) is provided with a spline stop shaft (32) clamped at the center thereof, and the top end of the spline stop shaft (32) is provided with a spline portion coaxially engaged with a lower short shaft portion of the compressor.

7. A compressor assembly device according to claim 6, characterized in that: The pneumatic centering device (3) further comprises a support ring (33), the support ring (33) being coaxially arranged on the outside of the spline stop shaft (32), and a plurality of locking pressure plates (34) for pressing the outer edge of the bottom of the compressor evenly arranged along the circumferential direction on the support ring (33).

8. A compressor assembly device according to any one of claims 1 to 5, characterized in that: The pneumatic downward pressure device (4) comprises a downward pressure cylinder (41), a pressure regulating valve, and a floating joint (42). The downward pressure cylinder (41) is coaxially arranged above the upper short shaft portion of the compressor. The end of the pressure rod of the downward pressure cylinder (41) is provided with a floating joint (42) coaxially crimped with the upper short shaft portion. The downward pressure cylinder (41) is connected to an air source via a pressure regulating valve.

9. A compressor assembly device according to any one of claims 1 to 5, characterized in that: It also comprises a moving frame (1) and a gantry frame (2); the top of the moving frame (1) is provided with a platform for linear movement, the top of the platform is provided with a pneumatic centering device (3); and the gantry frame (2) is provided with a pneumatic pressing device (4).

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