A testing device for compressor processing

Abstract

This utility model discloses a testing device for compressor processing, including a base and a horizontal testing platform. The horizontal testing platform is fixedly connected to the top of the base, and a support frame is fixedly connected to the middle of one end of the horizontal testing platform above the base. A drive seat is fixedly connected to the middle of the upper part of the horizontal testing platform, and a rotating stage is provided at the upper output end of the drive seat. This utility model is equipped with a first testing camera and a second testing camera. In conjunction with a planar light box and a ring light holder, when the crankshaft spindle rotates at high speed, the camera's exposure captures images, causing the eccentric shaft hole at the end of the spindle to form a ring-shaped shaft hole sweep trajectory and end face rotation trajectory in the image. Combined with the side sweep trajectory captured by the second testing camera, by comparing the sweep trajectory with the pre-stored trajectory, the deviation range generated by the crankshaft end and shaft hole during high-speed rotation can be obtained.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a testing device for compressor processing. Background Technology

[0002] The compressor crankshaft is one of the key components of a scroll compressor. Its eccentric portion drives the moving scroll to revolve around the center of the main shaft, causing the moving and stationary scrolls to mesh and achieve periodic changes in the closed working volume, thus realizing the intake, compression, and discharge of gas. Due to the complexity of the scroll profile, unavoidable machining and assembly accuracy errors will inevitably occur during actual production. The presence of these errors can lead to excessive meshing clearance or excessive mutual compression between the sidewalls of the moving and stationary scrolls, which will seriously affect the working performance of the scroll compressor.

[0003] Therefore, the precision of the compressor crankshaft has a significant impact on the compressor's performance. In order to reduce the processing difficulty, existing compressor crankshafts are often machined by directly drilling an eccentric hole on the end face of the main shaft, and then forming the crankshaft by installing an eccentric shaft. Therefore, after the eccentric hole is machined, an inspection process is required to ensure the yield rate. However, the existing inspection process is generally carried out manually by using vernier calipers and micrometers. The outer diameter of the shaft, the diameter of the eccentric hole, and the eccentricity need to be checked sequentially. The inspection efficiency is low, and only random sampling can be performed. There is room for further improvement. Utility Model Content

[0004] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a testing device for compressor processing, thereby solving the above-mentioned problem.

[0005] To achieve the above objectives, a testing device for compressor processing is provided, comprising a base and a horizontal testing platform. The horizontal testing platform is fixedly connected above the base, and a support frame is fixedly connected above the base at the middle of one end of the horizontal testing platform. A drive seat is fixedly connected above the middle of the horizontal testing platform, and a rotating platform is provided at the output end above the drive seat. A shaft fixing mechanism is fixedly connected above the rotating platform. A first detection camera is installed at the position corresponding to the shaft fixing mechanism below the top of the support frame. An annular lamp holder is installed on the outside of the first detection camera. A side detection bracket is fixedly connected to the middle of one side of the upper part of the horizontal detection platform. A side light source bracket is fixedly connected to the middle of the side of the upper part of the horizontal detection platform away from the side detection bracket. A second detection camera is fixedly connected to the top of the side detection bracket. A flat light box is fixedly connected to the top of the side light source bracket near the shaft fixing mechanism.

[0006] According to the aforementioned compressor processing testing device, the shaft fixing mechanism includes a shaft fixing sleeve, a sliding limiting sleeve, an upper shaft pressing groove, a lower shaft pressing groove, elastic pressure strips, pressure block limiting grooves, and a fixing spring. The bottom of the shaft fixing sleeve is fixedly connected to the center of the rotating table. A sliding limiting sleeve is slidably sleeved on the outer side of the shaft fixing sleeve, and a fixing spring is provided on the outer side of the sliding limiting sleeve. Upper shaft pressing grooves are provided at three equal divisions above the shaft fixing sleeve, and lower shaft pressing grooves are provided at three equal divisions below the shaft fixing sleeve. There is a 60-degree phase difference between the three upper shaft pressing grooves and the lower shaft pressing grooves. Elastic pressure strips are fixedly connected to the lower interior of the three upper shaft pressing grooves and the lower shaft pressing grooves. Pressure block limiting grooves are provided at positions corresponding to the sliding limiting sleeve and the multiple elastic pressure strips.

[0007] According to the compressor processing testing device, a gear transmission is provided inside the drive base, and a drive motor is fixedly connected to one end of the horizontal testing platform near the support frame. The output shaft of the drive motor passes through the drive base and is connected to the power input end of the gear transmission via a helical gear.

[0008] According to the compressor processing inspection device, a worktable is provided on the side of the base away from the second inspection camera, and a control console is provided above the worktable.

[0009] According to the compressor processing testing device, a protective cover is fixedly connected to the outside of the horizontal testing platform and support frame above the base.

[0010] According to the aforementioned compressor processing detection device, the side of the plurality of elastic pressure strips near the sliding limit sleeve has a sloping structure that is wider at the top and narrower at the bottom.

[0011] According to the compressor processing detection device, the top outer side of the sliding limiting sleeve is provided with an outwardly flared skirt, which is used to limit the spring and form a pressable structure.

[0012] The above solution has at least one of the following beneficial effects: 1. This utility model is equipped with a first detection camera and a second detection camera, which, together with a flat lightbox and a ring light holder, can capture images of the crankshaft's main shaft rotating at high speed using the camera's exposure. This captures an annular sweep trajectory of the eccentric shaft hole at the end of the main shaft and an end face rotation trajectory in the image. When the main shaft is of substandard quality, a ghost ring will be generated around its end face trajectory and the sweep trajectory of the shaft hole. Combined with the side sweep trajectory captured by the second detection camera, the deviation range of the crankshaft end and shaft hole during high-speed rotation can be obtained by comparing the sweep trajectory with a pre-stored trajectory. By utilizing the machine vision inspection principle, the inspection efficiency is improved and the practicality of the device is enhanced.

[0013] 2. This utility model is equipped with a shaft fixing mechanism. Through the three elastic pressure strips in the upper and lower layers, and the elastic force of the fixing spring, the pressure block limiting groove moves upward, which, together with the elastic pressure strips, provides the limiting ability for the shaft. Furthermore, by arranging the elastic pressure strips in two staggered layers, the shaft can be simultaneously centered at three points on both the upper and lower sides, improving the centering accuracy of the shaft fixing. When loading and unloading the shaft, simply press the outer edge of the sliding limiting sleeve to release the limiting, greatly simplifying the loading and unloading operation, improving the detection efficiency, and enhancing the practicality of the device.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a three-dimensional structural diagram of a testing device for compressor processing according to the present invention; Figure 2 This is a bottom-view perspective view of the detection device for compressor processing according to this utility model; Figure 3 This is a front structural diagram of a compressor processing testing device according to the present invention; Figure 4 This is a three-dimensional structural diagram of the shaft fixing mechanism of this utility model; Figure 5 This is a schematic diagram of the internal structure of the shaft fixing mechanism of this utility model.

[0016] Legend: 1. Base; 2. Horizontal inspection table; 3. Support frame; 4. Drive seat; 5. Rotating table; 6. Shaft fixing mechanism; 7. First inspection camera; 8. Side inspection bracket; 9. Side light source bracket; 10. Second inspection camera; 11. Flat light box; 12. Annular lamp holder; 13. Control console; 61. Shaft fixing sleeve; 62. Sliding limit sleeve; 63. Upper shaft pressing groove; 64. Lower shaft pressing groove; 65. Elastic pressure strip; 66. Pressure block limiting groove; 67. Fixing spring. Detailed Implementation

[0017] This section will describe in detail the specific embodiments of the present utility model. Preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present utility model. The drawings are all in a very simplified form and use non-precise proportions. They are only used to help to explain the embodiments of the present utility model in a convenient and clear way, and should not be construed as limiting the scope of protection of the present utility model.

[0018] Reference Figure 1-5 This utility model provides a compressor processing testing device, including a base 1 and a horizontal testing platform 2. The horizontal testing platform 2 is fixedly connected to the top of the base 1. A support frame 3 is fixedly connected to the middle of one end of the horizontal testing platform 2 above the base 1. A protective cover is fixedly connected to the outside of the horizontal testing platform 2 and the support frame 3 above the base 1. A drive seat 4 is fixedly connected to the middle of the top of the horizontal testing platform 2. A rotating platform 5 is provided at the output end of the drive seat 4. A gear transmission is provided inside the drive seat 4. A drive motor is fixedly connected to the end of the horizontal testing platform 2 near the support frame 3. The output shaft of the drive motor passes through the drive seat 4 and is connected to the power input end of the gear transmission through a helical gear. A shaft fixing mechanism 6 is fixedly connected to the top of the rotating platform 5, which can fix the crankshaft spindle and drive the spindle to rotate at high speed. The protective cover reduces the danger caused by the high-speed rotating spindle being thrown out. The shaft fixing mechanism 6 includes a shaft fixing sleeve 61, a sliding limiting sleeve 62, an upper shaft pressing groove 63, a lower shaft pressing groove 64, an elastic pressing strip 65, a pressing block limiting groove 66, and a fixing spring 67. The bottom of the shaft fixing sleeve 61 is fixedly connected to the center of the rotating table 5. The sliding limiting sleeve 62 is slidably sleeved on the outer side of the shaft fixing sleeve 61. The fixing spring 67 is provided on the outer side of the sliding limiting sleeve 62. The top outer side of the sliding limiting sleeve 62 is provided with an outwardly flared skirt, which can not only limit the fixing spring 67, but also act as a pressing plate to facilitate the inspection personnel to press down the sliding limiting sleeve 62. The upper shaft pressing groove 63 is opened at three equal divisions above the shaft fixing sleeve 61, and the lower shaft pressing groove is opened at three equal divisions below the shaft fixing sleeve 61. 64. There is a 60-degree phase difference between the three upper shaft pressure grooves 63 and the lower shaft pressure groove 64. Elastic pressure strips 65 are fixedly connected to the lower part of the interior of the three upper shaft pressure grooves 63 and the lower shaft pressure groove 64. Pressure block limiting grooves 66 are opened at the corresponding positions of the sliding limiting sleeve 62 and the multiple elastic pressure strips 65. The side of the multiple elastic pressure strips 65 near the sliding limiting sleeve 62 has a sloping structure that is wider at the top and narrower at the bottom. By the elastic force of the fixed spring 67, the pressure block limiting groove 66 can move upward, and the sloping structure of the elastic pressure strips 65 can provide the limiting ability of the shaft. Furthermore, by setting the elastic pressure strips 65 in two staggered layers, the shaft can be centered at three points on both the upper and lower sides at the same time, which improves the centering accuracy of the shaft fixation. A first detection camera 7 is installed at the position corresponding to the shaft fixing mechanism 6 below the top of the support frame 3. A ring lamp holder 12 is installed on the outside of the first detection camera 7. A side detection bracket 8 is fixedly connected to the middle of one side above the horizontal detection platform 2. A side light source bracket 9 is fixedly connected to the middle of the side above the horizontal detection platform 2 away from the side detection bracket 8. A second detection camera 10 is fixedly connected to the top of the side detection bracket 8. A flat light box 11 is fixedly connected to the top of the side light source bracket 9 near the shaft fixing mechanism 6. A worktable is installed on the side of the base 1 away from the second detection camera 10, and a control console 13 is installed above the worktable. When the crankshaft spindle rotates at high speed, the camera's exposure will capture images, causing the eccentric shaft hole at the end of the spindle to form a ring-shaped shaft hole sweep trajectory and end face rotation trajectory in the image. When the spindle quality is unqualified, a ghost ring will be generated around its end face trajectory. By comparing the sweep trajectory captured by the second detection camera with the pre-stored trajectory, the deviation range of the crankshaft end and shaft hole during high-speed rotation can be obtained.

[0019] Working Principle: During operation, this invention, aided by a flat light box 11 and an annular light holder 12, uses a first detection camera 7 and a second detection camera 10 to photograph the high-speed rotating shaft. Utilizing the exposure and image retention principle of the cameras, the main shaft and its eccentric end hole form an annular shaft hole sweep trajectory and end face rotation trajectory in the image. Combined with the side sweep trajectory captured by the second detection camera 10, the deviation range generated by the crankshaft end and shaft hole during high-speed rotation can be directly obtained by comparing it with the pre-stored sweep trajectory on the control console 13. Simultaneously, the shaft fixing mechanism 6 mainly uses the elastic force of the fixing spring 67 to cause the pressure block limiting groove 66 to move upwards, which, together with the inclined structure of the elastic pressure strip 65, provides the limiting ability for the shaft. Therefore, when loading and unloading the shaft, simply pressing the outward-expanding skirt to compress the fixing spring 67 is sufficient to release the limiting, reducing replacement time and improving detection efficiency.

[0020] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A testing device for compressor processing, comprising a base (1) and a horizontal testing platform (2), characterized in that: A horizontal testing platform (2) is fixedly connected above the base (1). A support frame (3) is fixedly connected above the base (1) at the middle of one end of the horizontal testing platform (2). A drive seat (4) is fixedly connected above the middle of the horizontal testing platform (2). A rotating platform (5) is provided at the output end above the drive seat (4). A shaft fixing mechanism (6) is fixedly connected above the rotating platform (5). A first detection camera (7) is provided at the position corresponding to the shaft fixing mechanism (6) below the top of the support frame (3). An annular lamp holder (12) is provided on the outside of the first detection camera (7). A side detection bracket (8) is fixedly connected to the middle of one side of the upper side of the horizontal detection platform (2). A side light source bracket (9) is fixedly connected to the middle of the side of the upper side of the horizontal detection platform (2) away from the side detection bracket (8). A second detection camera (10) is fixedly connected to the top of the side detection bracket (8). A flat light box (11) is fixedly connected to the top of the side light source bracket (9) near the shaft fixing mechanism (6).

2. The compressor processing testing device according to claim 1, characterized in that, The shaft fixing mechanism (6) includes a shaft fixing sleeve (61), a sliding limiting sleeve (62), an upper shaft pressing groove (63), a lower shaft pressing groove (64), an elastic pressing strip (65), a pressing block limiting groove (66), and a fixing spring (67). The bottom of the shaft fixing sleeve (61) is fixedly connected to the center of the rotating platform (5). The sliding limiting sleeve (62) is slidably sleeved on the outer side of the shaft fixing sleeve (61). A fixing spring (67) is provided on the outer side of the sliding limiting sleeve (62). The upper shaft pressure groove (63) is provided at three equal divisions above the shaft, and the lower shaft pressure groove (64) is provided at three equal divisions below the shaft fixing sleeve (61). There is a 60-degree phase difference between the three upper shaft pressure grooves (63) and the lower shaft pressure grooves (64). Elastic pressure strips (65) are fixedly connected to the lower part of the interior of the three upper shaft pressure grooves (63) and the lower shaft pressure grooves (64). Pressure block limiting grooves (66) are provided at the corresponding positions of the sliding limiting sleeve (62) and the multiple elastic pressure strips (65).

3. The compressor processing testing device according to claim 1, characterized in that, The drive seat (4) is equipped with a gear transmission. A drive motor is fixedly connected to one end of the horizontal testing platform (2) near the support frame (3). The output shaft of the drive motor passes through the drive seat (4) and is connected to the power input end of the gear transmission via a helical gear.

4. The compressor processing testing device according to claim 1, characterized in that, A workbench is provided on the side of the base (1) away from the second detection camera (10), and a control console (13) is provided above the workbench.

5. The compressor processing testing device according to claim 1, characterized in that, A protective cover is fixedly connected above the base (1) on the outside of the horizontal testing platform (2) and the support frame (3).

6. The compressor processing testing device according to claim 2, characterized in that, The side of the multiple elastic pressure strips (65) near the sliding limit sleeve (62) has a sloping structure that is wider at the top and narrower at the bottom.

7. The compressor processing testing device according to claim 2, characterized in that, The sliding limiting sleeve (62) has an outwardly flared skirt on its top outer side.

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