A screw gas compressor assembly performance testing apparatus

Abstract

This invention relates to the field of performance testing technology for screw gas compressors, specifically a performance testing device for screw gas compressor components. The device includes a base with two clamping units arranged horizontally on the upper end. These clamping units clamp a screw rotor and drive it to rotate. Testing units are distributed above the base, and a conformal unit is installed in the center of the upper end of the base. The testing units are mounted on the conformal unit. This invention is used to test the wear resistance of screw rotors. It employs a combination of rolling and sliding friction to test the wear resistance of the screw rotor, thereby simulating the actual friction state of the screw rotor during operation and ensuring its performance in later use. Furthermore, this invention can apply a constant frictional force to the surface of the screw rotor based on its helical tooth profile, thus ensuring the accuracy of the wear resistance test results.

Description

Technical Field

[0001] This invention relates to the field of screw gas compressor performance testing technology, specifically a screw gas compressor component performance testing device. Background Technology

[0002] Screw gas compressors are key pieces of equipment widely used in industrial fields, and their performance directly affects the stability and efficiency of the entire production system. The screw rotor is the core component of the screw gas compressor. Figure 11 As shown, screw rotors are typically helical in shape and have a unique helical tooth structure. The performance of screw rotors, especially their wear resistance, plays a decisive role in the service life and operational reliability of screw gas compressors. Therefore, it is necessary to test the wear resistance of screw rotors.

[0003] Currently, when testing the wear resistance of screw rotors, the screw rotor is usually clamped and fixed with a fixture, and then the surface of the screw rotor is continuously rubbed by a friction testing device. Finally, the screw rotor is removed from the fixture, and the wear condition of the screw rotor surface is detected to evaluate whether the wear resistance of the screw rotor is qualified.

[0004] The following problems exist in the current testing of the wear resistance of screw rotors: 1. Screw rotors experience both rolling and sliding friction during operation. Furthermore, the presence of particulate impurities in the gas can cause these impurities to impact and rub against the screw rotor surface during operation. Current methods for testing the wear resistance of screw rotors are relatively simple and cannot simulate the actual friction state during operation, thus affecting the actual performance of the screw rotor. 2. Due to the complex shape of the helical teeth of the screw rotor, wear resistance testing at different locations of the helical teeth may result in incomplete contact between the friction components and the screw rotor, preventing the friction components from applying a constant frictional force to the screw rotor. This leads to a decrease in the accuracy of the wear resistance test results for the screw rotor. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a performance testing device for a screw gas compressor assembly, comprising a base, two left-right arranged clamping units mounted on the upper end of the base, the clamping units being used to clamp the screw rotor and drive the screw rotor to rotate, detection units distributed above the base, and a conforming unit mounted on the middle of the upper end of the base, the detection unit being mounted on the conforming unit; the conforming unit includes an annular sleeve slidably mounted on the middle of the upper end of the base, a return spring connecting the annular sleeve and the base, a transmission ring rotatably mounted on the inner side of the annular sleeve via multiple guide springs, and a conforming rod threadedly connected to the lower part of the inner side of the annular sleeve, the upper end of the conforming rod slidingly penetrating the transmission ring. The rotating ring has a mating component installed at the rear end of the upper side of the base to drive the transmission ring to reciprocate. The detection unit includes an arc-shaped slider slidably mounted on the transmission ring and arranged symmetrically at the center. A pressure spring rod is radially slidably mounted on the side of the arc-shaped slider near the center of the transmission ring. A friction ball is rotatably mounted on the side of the pressure spring rod near the center of the transmission ring. A locking component is installed at the telescopic end of the pressure spring rod to lock the rotating shaft of the friction ball. An impact component is installed at the fixed end of the pressure spring rod near the center of the transmission ring to impact the telescopic end of the pressure spring rod. A driven component is connected between the transmission ring and the pressure spring rod. The driven component is used to cooperate with the screw rotor to drive the pressure spring rod to slide radially synchronously.

[0006] Preferably, the clamping unit includes an upright plate, wherein the left upright plate is fixedly connected to the base, the right upright plate is slidably connected to the base via an adjusting member, a rotating plate is rotatably mounted on the upright plate, wherein an active member is connected between the left rotating plate and the base, and multiple circumferentially evenly arranged clamping plates are radially slidably mounted on opposite sides of the two rotating plates via a synchronizing member.

[0007] Preferably, the right end of the transmission ring is provided with an arc-shaped groove corresponding to the position of the pressure spring rod. The driven member includes an arc-shaped plate slidably installed in the arc-shaped groove. An arc-shaped spring is connected between the arc-shaped plate and the arc-shaped groove. An arc-shaped hole is provided on the arc-shaped plate corresponding to the position of the pressure spring rod. An arc-shaped sliding plate is slidably installed in the arc-shaped hole. An inclined groove is provided on the sliding plate. A round rod is slidably installed in the inclined groove. The end of the round rod near the transmission ring radially slides through the arc-shaped slider and is fixedly connected to its corresponding pressure spring rod.

[0008] Preferably, two symmetrically arranged connecting sleeves are radially slidably installed on the inner wall of the transmission ring. A driven rod is threadedly connected to the side of the connecting sleeve near the middle of the transmission ring. The arc-shaped plate has an inclined mating groove corresponding to the position of the connecting sleeve. A mating rod is slidably installed in the mating groove. The end of the mating rod near the transmission ring radially slides through the transmission ring and is fixedly connected to the connecting sleeve.

[0009] Preferably, the outer side of the annular sleeve is provided with through holes corresponding to the position of the arc-shaped slider, and the outer side of the arc-shaped plate is provided with multiple circumferentially evenly arranged circular holes corresponding to the position of the sliding plate and the outer side of the transmission ring is provided with locking screws that can be detachably installed in the circular holes. The outer side of the sliding plate and the outer side of the arc-shaped slider are provided with locking holes for cooperating with their corresponding locking screws.

[0010] Preferably, an L-shaped lever is fixedly installed on the right end of the arc plate, and two L-shaped limiting plates arranged opposite each other are slidably installed on the upper end of the adjusting member through a connecting spring. The left side of the transverse section of the limiting plate is provided with an inclined surface for cooperating with the lever. An L-shaped plate is fixedly installed on the right end of the annular sleeve at the position corresponding to the limiting plate. The opposite sides of the right ends of the two L-shaped plates are provided with inclined surfaces for driving the two limiting plates to move away from each other.

[0011] Preferably, the impact component includes a fixing plate fixedly installed on the left end of the fixed end of the pressure spring rod near the middle of the transmission ring. An impact spring rod is slidably installed on the fixing plate. A cooperating spring rod is fixedly installed on the left end of the impact spring rod away from the middle of the transmission ring. An unlocking plate is fixedly installed on the right end of the impact spring rod near the middle of the transmission ring. A square plate is fixedly installed on the left end of the telescopic end of the pressure spring rod near the middle of the transmission ring, and the square plate is in contact with the impact spring rod.

[0012] Preferably, the position of the impact spring rod on the left side of the inner side of the annular sleeve is detachably mounted with an installation plate. An arc-shaped connecting plate is fixedly installed on the side of the installation plate near the middle of the annular sleeve. Multiple L-shaped mating blocks are fixedly installed on the side of the connecting plate near the middle of the annular sleeve. The right side of the transverse section of the mating block is provided with an inclined surface for driving the mating spring rod to engage. The left side of the mating spring rod away from the mating block is set as an inclined surface.

[0013] Preferably, the locking component includes a retaining plate that is radially slidably mounted on the telescopic end of the pressure spring rod, and the left end of the retaining plate radially slidably passes through the telescopic end of the pressure spring rod. A top extension spring is connected between the retaining plate and the pressure spring rod. A locking rod is fixedly mounted on the side of the retaining plate near the middle of the annular sleeve. A mating hole is provided on the rotating shaft of the friction ball for cooperating with the locking rod to lock the rotating shaft of the friction ball.

[0014] Preferably, the mating component includes multiple mating plates evenly arranged on the left and right sides and fixedly installed on the upper rear end of the base. The upper left and right sides of the mating plates are set as inclined surfaces. A transmission rod is fixedly installed on the rear part of the transmission ring. The rear end of the transmission rod slides through the annular sleeve. The transmission rod is used to cooperate with the inclined surface of the mating plate to drive the transmission ring to rotate.

[0015] The beneficial effects of this invention are as follows: 1. This invention uses a conformal unit and the helical teeth of the screw rotor to drive the friction ball to continuously rub the surface of the screw rotor, thereby realizing the wear resistance test of the screw rotor. At the same time, this invention uses a locking component to lock the rotation shaft of the friction ball, so that the friction ball uses a combination of rolling friction and sliding friction to test the wear resistance of the screw rotor, thereby simulating the actual friction state of the screw rotor during operation and ensuring the later use effect of the screw rotor.

[0016] 2. When the friction ball tests the wear resistance of the screw rotor surface, the present invention uses an impactor to continuously impact the extension end of the pressure spring rod, thereby causing the friction ball to rub the screw rotor surface by impact friction, thus simulating the situation of particulate impurities impacting and rubbing the screw rotor surface, and further ensuring the later use effect of the screw rotor.

[0017] 3. This invention sets a follower rod that moves along the helical teeth of the screw rotor. At the same time, the follower rod can synchronously drive the pressure spring rod to move radially, ensuring that the compression of the pressure spring rod remains constant. This allows the friction ball to rub the surface of the screw rotor with a constant frictional force, ensuring that the frictional force on each part of the helical teeth of the screw rotor is uniform and stable, thereby ensuring the accuracy of the wear resistance test results of the screw rotor. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the base and clamping unit of the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the base, follow-up unit, and detection unit of the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the follower unit and detection unit after the annular sleeve has been partially removed, according to the present invention.

[0023] Figure 5 This is a three-dimensional structural diagram of the follower unit and the detection unit of the present invention.

[0024] Figure 6 This is a right view of the follower unit structure and the detection unit of the present invention.

[0025] Figure 7 This is a three-dimensional structural diagram of the follower unit and the detection unit after the transmission ring has been partially removed, according to the present invention.

[0026] Figure 8 This is a three-dimensional structural diagram of the follower unit and the detection unit of the present invention.

[0027] Figure 9 This is the invention Figure 8 Enlarged view of point A.

[0028] Figure 10 This is a three-dimensional structural diagram of the detection unit after removing part of the telescopic end of the pressure spring rod according to the present invention.

[0029] Figure 11 This is a three-dimensional structural diagram of a screw rotor.

[0030] Reference numerals: 1. Base; 11. Mating component; 111. Mating plate; 2. Clamping unit; 21. Vertical plate; 22. Adjusting component; 221. Connecting spring; 222. Limiting plate; 23. Rotating plate; 24. Driving component; 25. Synchronizing component; 26. Clamping plate; 3. Conforming unit; 31. Return spring; 32. Annular sleeve; 321. Mounting plate; 322. Connecting plate; 323. Mating block; 324. L-shaped plate; 33. Guide spring; 34. Transmission ring; 341. Transmission rod; 35. Conforming rod; 36. Driven unit Components; 361. Arc-shaped plate; 362. Arc-shaped spring; 363. Sliding plate; 364. Round rod; 365. Connecting sleeve; 366. Driven rod; 367. Matching rod; 368. Actuating rod; 37. Locking screw; 4. Detection unit; 41. Arc-shaped slider; 42. Pressure spring rod; 421. Square plate; 43. Friction ball; 44. Locking component; 441. Pressing plate; 442. Extension spring; 443. Locking rod; 45. Impact component; 451. Impact spring rod; 452. Matching spring rod; 453. Unlocking plate. Detailed Implementation

[0031] The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. Where no specific technology or conditions are specified in the embodiments, they shall be performed in accordance with the technology or conditions described in the literature in the field or in accordance with the product manual.

[0032] See Figure 1 A performance testing device for a screw gas compressor assembly includes a base 1. Two clamping units 2 arranged left and right are installed on the upper end of the base 1. The clamping units 2 are used to clamp the screw rotor and drive the screw rotor to rotate. Testing units 4 are distributed above the base 1. A conformal unit 3 is installed in the middle of the upper end of the base 1. The testing units 4 are installed on the conformal unit 3.

[0033] This invention is used to test the wear resistance of screw rotors. It employs a combination of rolling friction and sliding friction to test the wear resistance of screw rotors, ensuring the performance of the screw rotors in later use. Furthermore, this invention can apply a constant frictional force to the surface of the screw rotor based on the helical tooth profile, ensuring the accuracy of the wear resistance test results.

[0034] Specifically, firstly, the rotating shaft of the screw rotor is placed in two clamping units 2, and the clamping units 2 are controlled to clamp and fix the screw rotor. Then, the friction force applied to the surface of the screw rotor by the detection unit 4 is controlled according to the required amount of friction force. Next, the clamping units 2 are controlled to drive the screw rotor to rotate. At the same time, the rotating screw rotor can cooperate with the conforming unit 3 to drive the detection unit 4 to move back and forth, so that the detection unit 4 continuously rubs the surface of the screw rotor using a combination of rolling friction and sliding friction. Meanwhile, the conforming unit 3 can cooperate with the helical teeth of the screw rotor to drive the detection unit 4 to apply a constant friction force to the surface of the screw rotor. After the detection unit 4 has completed the friction test of the screw rotor, the screw rotor is removed from the clamping unit 2, and the wear condition of the screw rotor surface is detected to evaluate whether the wear resistance performance of the screw rotor is qualified.

[0035] It should be noted that the surface wear of the screw rotor can be detected using a machine vision system. The system illuminates the screw rotor with a light source, providing uniform and sufficient light to ensure that the surface features of the screw rotor are clearly visible. The lens images the screw rotor onto the camera's image sensor. The camera's image sensor converts the light signal into an electrical signal, which is then converted from analog to digital and transmitted to the image processing unit. The image processing unit analyzes and processes the digital image data to obtain the wear condition of the screw rotor surface.

[0036] See Figure 1 and Figure 2 The clamping unit 2 includes a vertical plate 21, wherein the left vertical plate 21 is fixedly connected to the base 1, and the right vertical plate 21 is slidably connected to the base 1 through an adjusting member 22. A rotating plate 23 is rotatably mounted on the vertical plate 21, wherein an active member 24 is connected between the left rotating plate 23 and the base 1, and multiple circumferentially evenly arranged clamping plates 26 are radially slidably mounted on opposite sides of the two rotating plates 23 through a synchronizing member 25.

[0037] It should be noted that the adjusting component 22 in this invention includes a U-shaped plate, which is slidably mounted on the upper end of the base 1. A threaded rod is threadedly connected to the vertical section on the front side of the U-shaped plate, and the threaded rod is rotatably connected to the base 1. The right upright plate 21 is fixedly mounted on the upper end of the horizontal section of the U-shaped plate. By turning the threaded rod, the U-shaped plate drives the right upright plate 21 to move left and right, thereby realizing the position adjustment of the upright plate 21.

[0038] It should be noted that the active component 24 in this invention includes a gear ring fixedly sleeved on the outside of the left rotating plate 23 and located on the left side of the upright plate 21. A gear is meshed at the lower end of the gear ring. The gear is fixedly connected to the motor output shaft fixedly installed between the base 1 by a key engagement. By starting the motor, the gear is driven to rotate, so that the gear and the gear ring engage to drive the left rotating plate 23 to rotate.

[0039] It should be noted that the synchronizing component 25 in this invention includes synchronizing plates distributed on opposite sides of two rotating plates 23. A synchronizing screw is threaded onto the synchronizing plate, and the synchronizing screw is rotatably connected to the rotating plate 23. A diagonal rod is hinged to the outer side of the synchronizing plate at the position corresponding to the clamping plate 26. The end of the diagonal rod away from the synchronizing plate is fixedly connected to its corresponding clamping plate 26. By turning the synchronizing screw, the synchronizing plate is driven to move left and right, so that the synchronizing plate drives its corresponding clamping plate 26 to move synchronously in and out through the diagonal rod.

[0040] The clamping unit 2 is used to clamp and fix the screw rotor and drive the screw rotor to rotate. Specifically, firstly, the position of the right vertical plate 21 is adjusted according to the length of the screw rotor by the control adjustment component 22. Then, the rotation shafts at both ends of the screw rotor are placed on the opposite sides of multiple clamping plates 26 on the left and right sides respectively. The synchronization component 25 is controlled to drive the corresponding multiple clamping plates 26 to move towards each other and clamp and fix the screw rotor rotation shaft. Finally, the driving component 24 is controlled to drive the left rotating plate 23 to rotate, so that the left rotating plate 23 drives the screw rotor to rotate through the synchronization component 25 and the clamping plate 26. After the performance test of the screw rotor is completed, the synchronization component 25 is controlled to drive the multiple clamping plates 26 to move away from each other, so that the screw rotor can be taken out and the wear condition of the screw rotor surface can be detected to evaluate whether the wear resistance performance of the screw rotor is qualified.

[0041] See Figure 1 , Figure 3 and Figure 4 The conformal unit 3 includes an annular sleeve 32 that is slidably mounted on the upper middle part of the base 1. A return spring 31 is connected between the annular sleeve 32 and the base 1. A transmission ring 34 is rotatably mounted on the inner side of the annular sleeve 32 through multiple guide springs 33. A conformal rod 35 is threadedly connected to the lower part of the inner side of the annular sleeve 32, and the upper end of the conformal rod 35 slides through the transmission ring 34. A mating part 11 for driving the transmission ring 34 to reciprocate is installed at the upper rear end of the base 1.

[0042] See Figure 2 and Figure 3Two L-shaped limiting plates 222, arranged opposite each other, are slidably installed on the upper end of the horizontal section of the U-shaped plate via a connecting spring 221. An L-shaped plate 324 is fixedly installed on the right end of the annular sleeve 32 at the position corresponding to the limiting plate 222. The opposite sides of the right ends of the two L-shaped plates 324 are set as inclined surfaces to drive the two limiting plates 222 to move away from each other.

[0043] The conformal unit 3 is used to cooperate with the screw rotor to drive the detection unit 4 to move back and forth. Specifically, before clamping and fixing the screw rotor, the screw rotor is placed in the transmission ring 34, and the left end of the screw rotor corresponds to the position of the detection unit 4. Then, the conformal rod 35 is screwed according to the diameter of the screw rotor so that the end of the conformal rod 35 close to the screw rotor is in contact with the screw rotor. When the control active member 24 drives the screw rotor to rotate through the left rotating plate 23, the rotation direction of the screw rotor is controlled according to the direction of the helical teeth of the screw rotor. This allows the conformal rod 35 to cooperate with the helical teeth of the screw rotor to drive the annular sleeve 32 to move to the right. In turn, the annular sleeve 32 can drive the detection unit 4 to move to the right through the transmission ring 34. At the same time, the mating member 11 can drive the transmission ring 34 to rotate back and forth, so that the transmission ring 34 drives the detection unit 4 to perform wear resistance testing on the surface of the screw rotor.

[0044] When the control adjustment component 22 adjusts the position of the right vertical plate 21, the adjustment component 22 can simultaneously adjust the position of the limiting plate 222. When the annular sleeve 32 gradually moves to the position corresponding to the right end of the screw rotor, the annular sleeve 32 drives the L-shaped plate 324 to move to the position corresponding to the limiting plate 222, so that the inclined surface of the L-shaped plate 324 can drive the two limiting plates 222 to move away from each other and compress the right end of the connecting spring 221. When the right end of the L-shaped plate 324 moves to the right side of the limiting plate 222, the follower rod 35 moves to the position corresponding to the right end of the screw rotor and separates from the screw rotor. At the same time, the inclined surface of the L-shaped plate 324 separates from the limiting plate 222, and the limiting plate 222 returns to the initial position under the action of the connecting spring 221 and limits the position of the L-shaped plate 324, so that the L-shaped plate 324 cannot move to the left, thus preventing the annular sleeve 32 from returning to the initial position to the left.

[0045] Then, the control actuator 24 drives the screw rotor to rotate at a certain angle through the left rotating plate 23, and manually moves the two limiting plates 222 away from each other, thereby separating the limiting plate 222 and the L-shaped plate 324 and causing the annular sleeve 32 to move to the left under the action of the return spring 31. This causes the annular sleeve 32 to drive the conformal rod 35 to move to the right end of the screw rotor. Then, the control actuator 24 drives the screw rotor to rotate in the opposite direction through the left rotating plate 23, while the return spring 31 pushes the annular sleeve 32 to the left, so that the conformal rod 35 can engage with the helical teeth of the screw rotor to drive the annular sleeve 32 to move to the right to the initial position. The above operation is repeated, so that the detection unit 4 can perform performance testing on different positions of the screw rotor.

[0046] See Figure 3 The mating component 11 includes multiple mating plates 111 that are evenly arranged on the left and right sides and are fixedly installed on the upper rear end of the base 1. The upper left and right sides of the mating plate 111 are both set as inclined surfaces. A transmission rod 341 is fixedly installed on the rear part of the transmission ring 34. The rear end of the transmission rod 341 slides through the annular sleeve 32. The transmission rod 341 is used to cooperate with the inclined surface of the mating plate 111 to drive the transmission ring 34 to rotate.

[0047] The mating part 11 is used to drive the transmission ring 34 to reciprocate; specifically, when the annular sleeve 32 drives the transmission ring 34 to move back and forth, the transmission ring 34 drives the transmission rod 341 to move back and forth, and at the same time, the transmission rod 341 can cooperate with the inclined surface of the mating plate 111 to make the transmission ring 34 reciprocate under the action of the guide spring 33.

[0048] See Figures 3-5 and Figure 7 The detection unit 4 includes an arc-shaped slider 41 slidably mounted on the transmission ring 34 and arranged symmetrically at the center. A pressure spring rod 42 is radially slidably mounted on the side of the arc-shaped slider 41 near the middle of the transmission ring 34. A friction ball 43 is rotatably mounted on the side of the pressure spring rod 42 near the middle of the transmission ring 34. A locking member 44 for locking the rotation axis of the friction ball 43 is installed at the telescopic end of the pressure spring rod 42. An impact member 45 for impacting the telescopic end of the pressure spring rod 42 is installed on the side of the fixed end of the pressure spring rod 42 near the center of the transmission ring 34. A follower 36 is connected between the transmission ring 34 and the pressure spring rod 42. The follower 36 is used to cooperate with the screw rotor to drive the pressure spring rod 42 to slide radially synchronously.

[0049] The detection unit 4 is used to test the wear resistance of the screw rotor. Specifically, before clamping and fixing the screw rotor, the driven member 36 is controlled to move the pressure spring rod 42 away from the center of the transmission ring 34. Then, the screw rotor is placed in the transmission ring 34, and the driven member 36 is controlled to move the pressure spring rod 42 closer to the center of the transmission ring 34, so that the pressure spring rod 42 drives the friction ball 43 to adhere to the surface of the screw rotor. The magnitude of the friction force applied by the friction ball 43 to the surface of the screw rotor is controlled according to the compression of the pressure spring rod 42.

[0050] When the transmission ring 34 moves back and forth, it drives the friction ball 43 to move back and forth through the arc-shaped slider 41 and the pressure spring rod 42. At the same time, the transmission ring 34 drives the friction ball 43 to rotate back and forth through the arc-shaped slider 41 and the pressure spring rod 42, thereby causing the friction ball 43 to roll and rub against the surface of the screw rotor. Meanwhile, the driven member 36 can cooperate with the helical teeth of the screw rotor to drive the pressure spring rod 42 to maintain a constant compression, thereby causing the friction ball 43 to apply a constant frictional force to the screw rotor, ensuring the accuracy of the test results. At the same time, the locking member 44 can lock the rotation axis of the friction ball 43, allowing the friction ball 43 to slide and rub against the surface of the screw rotor. This achieves a combination of rolling friction and sliding friction to test the wear resistance of the screw rotor. Meanwhile, the impact member 45 can impact the extension end of the pressure spring rod 42, thereby causing the friction ball 43 to impact and rub against the surface of the screw rotor, thus simulating the friction state of particulate impurities impacting the surface of the screw rotor during actual operation, further ensuring the performance of the screw rotor.

[0051] See Figures 4-6 The right end of the transmission ring 34 is provided with an arc-shaped groove corresponding to the position of the pressure spring rod 42. The driven member 36 includes an arc-shaped plate 361 slidably installed in the arc-shaped groove. An arc-shaped spring 362 is connected between the arc-shaped plate 361 and the arc-shaped groove. An arc-shaped hole is provided on the arc-shaped plate 361 corresponding to the position of the pressure spring rod 42. An arc-shaped sliding plate 363 is slidably installed in the arc-shaped hole. An inclined groove is provided on the sliding plate 363. A round rod 364 is slidably installed in the inclined groove. The end of the round rod 364 near the transmission ring 34 radially slides through the arc-shaped slider 41 and is fixedly connected to its corresponding pressure spring rod 42. The elastic force of the arc-shaped spring 362 is much greater than that of the pressure spring rod 42.

[0052] See Figures 4-6 Two symmetrically arranged connecting sleeves 365 are radially slidably installed on the inner wall of the transmission ring 34. A driven rod 366 is threadedly connected to the side of the connecting sleeve 365 near the middle of the transmission ring 34. An inclined mating groove is opened on the arc plate 361 corresponding to the position of the connecting sleeve 365. A mating rod 367 is slidably installed in the mating groove. The end of the mating rod 367 near the transmission ring 34 radially slides through the transmission ring 34 and is fixedly connected to the connecting sleeve 365.

[0053] See Figure 4 and Figure 7 The outer side of the annular sleeve 32 is provided with through holes corresponding to the position of the arc-shaped slider 41. The outer side of the arc-shaped plate 361 is provided with multiple circumferentially evenly arranged circular holes corresponding to the position of the sliding plate 363 and the outer side of the transmission ring 34 is provided with multiple circumferentially evenly arranged circular holes. Locking screws 37 are detachably installed in the circular holes. The outer side of the sliding plate 363 and the outer side of the arc-shaped slider 41 are provided with locking holes for cooperating with their corresponding locking screws 37.

[0054] The driven member 36 is used to apply a constant frictional force to the screw rotor by the friction ball 43. Specifically, firstly, according to the helical tooth profile of the screw rotor, the sliding plate 363 and the arc-shaped slider 41 are slid synchronously, so that the arc-shaped slider 41 drives the friction ball 43 to move synchronously through the pressure spring rod 42. This allows the angle between the pressure spring rod 42 and the driven member 366 to be adjusted so that the positions of the driven member 366 and the friction ball 43 correspond to the two adjacent helical tooth profiles on the screw rotor. Then, the locking screws 37 corresponding to the sliding plate 363 and the arc-shaped slider 41 are installed into the corresponding arc-shaped plate 361 and the circular hole of the transmission ring 34, and the two locking screws 37 can lock the positions of their corresponding sliding plates 363 and arc-shaped sliders 41 respectively.

[0055] Before clamping and fixing the screw rotor, manually slide the arc plate 361. This causes the arc plate 361 to move the pressure spring rod 42 away from the center of the transmission ring 34 through the inclined groove of the sliding plate 363 and the round rod 364. At the same time, the arc plate 361 moves the connecting sleeve 365 and the driven rod 366 away from the center of the transmission ring 34 through the mating groove and the mating rod 367. When the screw rotor is placed in the transmission ring 34, release the arc plate 361. This allows the arc plate 361 to move back to its initial state under the action of the arc spring 362. This causes the arc plate 361 to move the pressure spring rod 42 closer to the center of the transmission ring 34 through the inclined groove of the sliding plate 363 and the round rod 364, and the friction ball 43 to adhere to the outside of the screw rotor. At the same time, the arc plate 361, through the mating groove and the mating rod 367, finally moves the driven rod 366 closer to the center of the transmission ring 34 and adheres to the outside of the screw rotor.

[0056] By rotating the driven rod 366 towards the connecting sleeve 365, and with the arc plate 361 ensuring that the driven rod 366 remains in contact with the outside of the screw rotor under the action of the arc spring 362, the compression of the pressure spring rod 42 can be adjusted by adjusting the distance the driven rod 366 moves towards the connecting sleeve 365, thereby adjusting the magnitude of the friction force applied to the screw rotor by the friction ball 43.

[0057] When the transmission ring 34 reciprocates left and right while simultaneously rotating, the transmission ring 34 drives the driven rod 366 to reciprocate left and right while simultaneously rotating. Since the driven rod 366 is always in contact with the outside of the screw rotor, the driven rod 366 can drive the arc plate 361 to move through the mating groove and the mating rod 367. The arc plate 361 then drives the pressure spring rod 42 to move radially synchronously through the inclined groove of the sliding plate 363 and the round rod 364. This ensures that the pressure spring rod 42 can maintain a constant compression, ensuring that the friction ball 43 applies a constant frictional force to the screw rotor, and ensuring the accuracy of the test results.

[0058] See Figure 1 and Figure 4 An L-shaped lever 368 is fixedly installed on the right end of the arc plate 361. The left side of the transverse section of the limiting plate 222 has an inclined surface for cooperating with the lever 368. The inclined surface of the limiting plate 222 located on the front side is located at the lower left end, and the inclined surface of the limiting plate 222 located on the rear side is located at the upper left end. When the lever 368 moves to the corresponding position of the inclined surface of the limiting plate 222, the limiting plate 222 and its corresponding lever 368 cooperate to drive the two arc plates 361 to rotate in the same direction.

[0059] Specifically, when the annular sleeve 32 gradually moves to the corresponding position on the right end of the screw rotor, the actuating rod 368 can cooperate with the inclined surface of the limiting plate 222 to drive the arc plate 361 to slide. This causes the arc plate 361 to drive the pressure spring rod 42 to move away from the center of the transmission ring 34 through the inclined groove of the sliding plate 363 and the round rod 364. The inclined surface of the limiting plate 222 located on the rear side can cooperate with the actuating rod 368 to drive its corresponding arc plate 361 to slide from bottom to top. The inclined surface of the limiting plate 222 located on the front side can cooperate with the actuating rod 368 to drive its corresponding arc plate 361 to slide from top to bottom, so that the two arc plates 361 slide in the same direction.

[0060] At the same time, the arc plate 361, through the cooperation of the mating groove and the mating rod 367, ultimately drives the driven rod 366 to move away from the center of the transmission ring 34, thereby ensuring that the driving member 24 can drive the screw rotor to rotate at a certain angle through the left rotating plate 23. When the annular sleeve 32 moves to the left, the actuating rod 368 can separate from the limiting plate 222, so that the arc plate 361 returns to its initial position under the return of the arc spring 362, and the friction ball 43 and the driven rod 366 can be attached to the outside of the screw rotor again.

[0061] See Figure 10The impact component 45 includes a fixed plate fixedly installed on the left end of the fixed end of the pressure spring rod 42 near the middle of the transmission ring 34. An impact spring rod 451 is slidably installed on the fixed plate. A cooperating spring rod 452 is fixedly installed on the left end of the impact spring rod 451 away from the middle of the transmission ring 34. An unlocking plate 453 is fixedly installed on the right end of the impact spring rod 451 near the middle of the transmission ring 34. A square plate 421 is fixedly installed on the left end of the telescopic end of the pressure spring rod 42 near the middle of the transmission ring 34, and the square plate 421 and the impact spring rod 451 are in contact.

[0062] See Figure 8 and Figure 9 The inner left end of the annular sleeve 32 is equipped with a mounting plate 321 in a detachable manner, corresponding to the position of the impact spring rod 451. An arc-shaped connecting plate 322 is fixedly installed on the side of the mounting plate 321 near the middle of the annular sleeve 32. Multiple L-shaped mating blocks 323 are fixedly installed on the side of the connecting plate 322 near the middle of the annular sleeve 32. The right side of the transverse section of the mating block 323 is provided with an inclined surface for driving the mating spring rod 452 to engage. The left end of the mating spring rod 452 away from the mating block 323 is set as an inclined surface.

[0063] The impact member 45 is used to impact the telescopic end of the pressure spring rod 42. Specifically, firstly, select the corresponding connecting plate 322 according to the diameter of the screw rotor, and install the corresponding mounting plate 321 on the annular sleeve 32. When the friction ball 43 is in contact with the outside of the screw rotor, the position of the mating spring rod 452 can correspond to the position of the mating block 323. When the transmission ring 34 reciprocates, the transmission ring 34 drives the mating spring rod 452 to move synchronously through the impact spring rod 451.

[0064] When the cooperating spring rod 452 moves to the corresponding position of the cooperating block 323, the inclined surfaces of the cooperating spring rod 452 and the cooperating block 323 engage to drive the impact spring rod 451 to move away from the center of the annular sleeve 32. When the cooperating spring rod 452 and the cooperating block 323 separate, the impact spring rod 451 can impact the square plate 421, thereby causing the square plate 421 to drive the friction ball 43 to impact the surface of the screw rotor through the extension end of the pressure spring rod 42. This achieves the friction ball 43 impacting the friction screw rotor, thus simulating the friction state of particulate impurities impacting the surface of the screw rotor during actual operation, further ensuring the performance of the screw rotor. At the same time, the inclined surface of the cooperating spring rod 452 can engage with the cooperating block 323 to compress the extension end of the cooperating spring rod 452, thus not interfering with the reciprocating rotation of the transmission ring 34.

[0065] See Figure 10The locking component 44 includes a retaining plate 441 that is radially slidably installed on the telescopic end of the pressure spring rod 42, and the left end of the retaining plate 441 radially slides through the telescopic end of the pressure spring rod 42. A top extension spring 442 is connected between the retaining plate 441 and the pressure spring rod 42. A locking rod 443 is fixedly installed on the side of the retaining plate 441 near the middle of the annular sleeve 32. A mating hole is provided on the rotating shaft of the friction ball 43 for cooperating with the locking rod 443 to lock the rotating shaft of the friction ball 43.

[0066] The locking element 44 is used to lock the rotating shaft of the friction ball 43. Specifically, when the impact spring rod 451 moves away from the center of the annular sleeve 32, the impact spring rod 451 drives the unlocking plate 453 to move away from the center of the annular sleeve 32. When the unlocking plate 453 gradually moves away from the center of the annular sleeve 32 to the limit position, the unlocking plate 453 can drive the locking rod 443 to move out of the mating hole of the rotating shaft of the friction ball 43 through the abutting plate 441, thereby enabling the friction ball 43 to rotate the surface of the friction screw rotor.

[0067] When the impact spring rod 451 returns to its initial position, the abutment plate 441, under the action of the extension spring 442, drives the locking rod 443 to return to its initial position. At the same time, the locking rod 443 can press against the outside of the rotating shaft of the friction ball 43. When the mating hole of the rotating shaft of the friction ball 43 rotates to the corresponding position of the locking rod 443 again, the locking rod 443 can be inserted into the mating hole again to lock the rotating shaft of the friction ball 43, so that the friction ball 43 slides and rubs the surface of the screw rotor. This achieves a combination of rolling friction and sliding friction to test the wear resistance of the screw rotor and ensure the later use effect of the screw rotor.

[0068] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A performance testing device for a screw gas compressor assembly, comprising a base, two clamping units arranged laterally mounted on the upper end of the base, the clamping units being used to clamp a screw rotor and drive the screw rotor to rotate, and testing units distributed above the base, characterized in that, A conformal unit is installed at the upper middle part of the base, and the detection unit is installed on the conformal unit. The conformal unit includes an annular sleeve that is slidably mounted on the upper middle part of the base. A return spring is connected between the annular sleeve and the base. A transmission ring is rotatably mounted on the inner side of the annular sleeve through multiple guide springs. A conformal rod is threadedly connected to the lower part of the inner side of the annular sleeve, and the upper end of the conformal rod slides through the transmission ring. A mating part for driving the transmission ring to reciprocate is installed at the rear end of the upper side of the base. The detection unit includes an arc-shaped slider slidably mounted on the transmission ring and arranged symmetrically at the center. A pressure spring rod is radially slidably mounted on the side of the arc-shaped slider near the center of the transmission ring. A friction ball is rotatably mounted on the side of the pressure spring rod near the center of the transmission ring. A locking element for locking the rotation axis of the friction ball is installed at the telescopic end of the pressure spring rod. An impact element for impacting the telescopic end of the pressure spring rod is installed on the side of the fixed end of the pressure spring rod near the center of the transmission ring. A driven element is connected between the transmission ring and the pressure spring rod. The driven element is used to cooperate with the screw rotor to drive the pressure spring rod to slide radially synchronously.

2. The performance testing equipment for a screw gas compressor assembly according to claim 1, characterized in that, The clamping unit includes an upright plate, wherein the left upright plate is fixedly connected to the base, and the right upright plate is slidably connected to the base to the left and right via an adjusting member. A rotating plate is rotatably mounted on the upright plate, wherein an active member is connected between the left rotating plate and the base, and multiple circumferentially evenly arranged clamping plates are radially slidably mounted on opposite sides of the two rotating plates via a synchronizing member.

3. The performance testing equipment for a screw gas compressor assembly according to claim 2, characterized in that, The right end of the transmission ring is provided with an arc-shaped groove corresponding to the position of the pressure spring rod. The driven member includes an arc-shaped plate slidably installed in the arc-shaped groove. An arc-shaped spring is connected between the arc-shaped plate and the arc-shaped groove. An arc-shaped hole is provided on the arc-shaped plate corresponding to the position of the pressure spring rod. An arc-shaped sliding plate is slidably installed in the arc-shaped hole. An inclined groove is provided on the sliding plate. A round rod is slidably installed in the inclined groove. The end of the round rod near the transmission ring slides radially through the arc-shaped slider and is fixedly connected to its corresponding pressure spring rod.

4. The performance testing equipment for a screw gas compressor assembly according to claim 3, characterized in that, Two symmetrically arranged connecting sleeves are radially slidably installed on the inner wall of the transmission ring. A driven rod is threadedly connected to the side of the connecting sleeve near the middle of the transmission ring. The arc plate has an inclined mating groove corresponding to the position of the connecting sleeve. A mating rod is slidably installed in the mating groove. The end of the mating rod near the transmission ring slides radially through the transmission ring and is fixedly connected to the connecting sleeve.

5. The performance testing equipment for a screw gas compressor assembly according to claim 3, characterized in that, The outer side of the annular sleeve is provided with through holes corresponding to the position of the arc-shaped slider. The outer side of the arc-shaped plate is provided with multiple circumferentially evenly arranged circular holes corresponding to the position of the sliding plate and the outer side of the transmission ring is provided with locking screws that can be detachably installed in the circular holes. The outer side of the sliding plate and the outer side of the arc-shaped slider are provided with locking holes for cooperating with their corresponding locking screws.

6. The performance testing equipment for a screw gas compressor assembly according to claim 3, characterized in that, An L-shaped lever is fixedly installed on the right end of the arc-shaped plate. Two L-shaped limiting plates arranged opposite each other are slidably installed on the upper end of the adjusting component via a connecting spring. An inclined surface for cooperating with the lever is opened on the left side of the transverse section of the limiting plate. An L-shaped plate is fixedly installed on the right end of the annular sleeve at the position corresponding to the limiting plate. The opposite sides of the right ends of the two L-shaped plates are set as inclined surfaces for driving the two limiting plates to move away from each other.

7. The performance testing equipment for a screw gas compressor assembly according to claim 1, characterized in that, The impact component includes a fixed plate fixedly installed on the left end of the fixed end of the pressure spring rod near the middle of the transmission ring. An impact spring rod is slidably installed on the fixed plate. A cooperating spring rod is fixedly installed on the left end of the impact spring rod away from the middle of the transmission ring. An unlocking plate is fixedly installed on the right end of the impact spring rod near the middle of the transmission ring. A square plate is fixedly installed on the left end of the telescopic end of the pressure spring rod near the middle of the transmission ring, and the square plate is in contact with the impact spring rod.

8. The performance testing equipment for a screw gas compressor assembly according to claim 7, characterized in that, The inner left end of the annular sleeve is equipped with a mounting plate that is detachably installed at the position corresponding to the impact spring rod. An arc-shaped connecting plate is fixedly installed on the side of the mounting plate near the middle of the annular sleeve. Multiple L-shaped mating blocks are fixedly installed on the side of the connecting plate near the middle of the annular sleeve. The right side of the transverse section of the mating block is provided with an inclined surface for driving the mating spring rod to engage. The left end of the mating spring rod away from the mating block is set as an inclined surface.

9. The performance testing equipment for a screw gas compressor assembly according to claim 7, characterized in that, The locking component includes a retaining plate that is radially slidably installed on the telescopic end of the pressure spring rod, and the left end of the retaining plate radially slides through the telescopic end of the pressure spring rod. A top extension spring is connected between the retaining plate and the pressure spring rod. A locking rod is fixedly installed on the side of the retaining plate near the middle of the annular sleeve. A mating hole is provided on the rotating shaft of the friction ball for cooperating with the locking rod to lock the rotating shaft of the friction ball.

10. The performance testing equipment for a screw gas compressor assembly according to claim 1, characterized in that, The mating component includes multiple mating plates evenly arranged on the left and right sides and fixedly installed on the upper rear end of the base. The upper left and right sides of the mating plates are set as inclined surfaces. A transmission rod is fixedly installed on the rear part of the transmission ring. The rear end of the transmission rod slides through the annular sleeve. The transmission rod is used to cooperate with the inclined surface of the mating plate to drive the transmission ring to rotate.

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