Automobile air conditioner blower load test bench and test method

Abstract

The invention discloses an automobile air conditioner blower load test bench and a test method, the automobile air conditioner blower load test bench comprises a main body, a clamping mechanism and a driving mechanism, the main body comprises a top plate, the bottom of the top plate is fixedly connected with a support frame, the top of the support frame is provided with a mounting port, the inner side of the mounting port is rotatably connected with a circular truncated cone, and the center of the bottom of the circular truncated cone is fixedly connected with a mounting cylinder; a fixing plate is arranged under the mounting cylinder and fixedly connected with the supporting frame, a supporting column is fixedly connected to the top of the fixing plate and rotationally connected with the mounting cylinder, and two sets of containing holes matched with the automobile air conditioner air blower are symmetrically formed in the table top of the circular table. The device has the beneficial effects that the device optimizes a load test process into blower loading and unloading and blower testing, and the operations are respectively performed by different workers, so that compared with the mode that the whole load test process is independently completed manually, the operation is simple, the manual workload is reduced, the blower loading and unloading and blower testing work can be performed simultaneously, and the working efficiency is improved. And the load test efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile air-conditioning blower testing, and in particular to an automobile air-conditioning blower load testing platform and a testing method. Background Art

[0002] The automotive air-conditioning blower is a key component in the automotive air-conditioning system. It is responsible for sucking air from the outside or inside, and then delivering the conditioned air into the car through the air-conditioning evaporator or heater chip. In the production of automotive air-conditioning blowers, load testing is required. The automotive air-conditioning blower load test is a test used to check the performance and stability of the blower under various loads.

[0003] At present, the load test of automobile air-conditioning blower is usually completed manually. During the test, the staff needs to use a clamping device to fix the blower, and then release the clamp and place the tested blower after the load test. The whole operation process is cumbersome, the workload is large, and the efficiency is low. Therefore, a load test bench and test method for automobile air-conditioning blower are proposed. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] The present invention has been proposed in view of the above-mentioned problems.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a load test bench for an automobile air-conditioning blower, comprising:

[0007] The main body includes a top plate, a support frame is fixedly connected to the bottom of the top plate, a mounting opening is opened on the top of the support frame, a truncated table is rotatably connected to the inner side of the mounting opening, a mounting cylinder is fixedly connected to the center of the bottom of the truncated table, a fixing plate is arranged directly below the mounting cylinder, the fixing plate is fixedly connected to the support frame, a supporting column is fixedly connected to the top of the fixing plate, the supporting column is rotatably connected to the mounting cylinder, and two groups of placement holes that fit with the automobile air-conditioning blower are symmetrically opened on the surface of the truncated table;

[0008] The clamping mechanism is symmetrically arranged with two groups, and the two groups of clamping mechanisms are respectively arranged in conjunction with two groups of placement holes. The clamping mechanism includes a guide rail, a slider, a push-pull column and a clamping assembly. The guide rail is arranged with two groups, and the two groups of guide rails are fixedly connected to the bottom of the truncated table and are arranged parallel to each other. The slider is slidably connected to the two groups of guide rails, and a push-pull column is fixedly connected to the bottom of the slider. The clamping assembly is arranged with two groups, and the two groups of clamping assemblies are symmetrically arranged on both sides of the placement hole. The clamping assembly includes a guide block, a mounting block, a guide column, a push-pull rod, an arc-shaped clamping block, a sliding column, a reset spring and a limit block. The guide block is fixedly connected to the bottom of the truncated table, and the mounting block is arranged on one side of the guide block close to the placement hole. On the side, the guide column is fixedly connected with two groups on the side of the mounting block close to the guide block, the two groups of guide columns both penetrate the guide block and are slidably connected with the guide block, the two ends of the push-pull rod are respectively rotatably connected with the mounting block and the slider, the arc clamping block is arranged on the side of the mounting block close to the placement hole, the sliding column is fixedly connected with two groups on the side of the arc clamping block close to the mounting block, the two groups of sliding columns both penetrate the mounting block and are slidably connected with the mounting block, the return spring and the limit block are respectively arranged with two groups, the two groups of return springs are respectively sleeved on the outside of the two groups of sliding columns, the two ends of the two groups of return springs are respectively abutted against the mounting block and the arc clamping block, and the two groups of limit blocks are respectively fixedly connected to the side of the two groups of sliding columns away from the arc clamping block;

[0009] The driving mechanism includes a primary support slat, wherein two groups of the primary support slats are fixedly connected to the top of the fixed plate, and a driving disk is fixedly connected to the top of the two groups of primary support slats. The driving disk is sleeved on the outside of the support column, and an annular driving groove is opened on the top of the driving disk. The driving groove is horizontal on one side close to one group of placement holes, and is arc-shaped on the side close to the other group of placement holes. Both groups of push-pull columns are slidably arranged on the inner side of the driving groove, and a worm gear is fixedly sleeved on the outside of the mounting cylinder. The top of the fixed plate is also fixedly connected to two groups of second The two groups of secondary support slats are fixedly connected with bearing seats on the top, a worm is arranged between the two groups of bearing seats, the worm is rotatably connected with the two groups of bearing seats and passes through the two groups of bearing seats, the worm wheel and the worm are meshed with each other, a stepper motor is fixedly connected to the inner side of one group of secondary support slats, the rotating shaft of the stepper motor passes through the adjacent secondary support slats and is rotatably connected with the secondary support slats, a sprocket is fixedly connected to the end of the rotating shaft of the secondary support slats and one end of the rotating shaft of the worm, and the two groups of sprockets are connected by chain transmission.

[0010] As a preferred solution of the automobile air-conditioning blower load test bench described in the present invention, the main body also includes two groups of positioning beads, the two groups of positioning beads are fixedly connected to the two sides of the bottom of the truncated table respectively, and the top plate is provided with positioning grooves at the positions opposite to the two groups of positioning beads, and the two groups of positioning beads are respectively inserted into the two groups of positioning grooves. When the positioning beads are inserted into the positioning grooves, the distance between the two groups of arc-shaped clamping blocks of one group of clamping mechanisms reaches the minimum, and the distance between the two groups of arc-shaped clamping blocks of the other group of clamping mechanisms reaches the maximum.

[0011] As a preferred solution of the automobile air-conditioning blower load test bench described in the present invention, the clamping assembly further includes a rubber pad, and the rubber pad is fixedly connected to one side of the arc-shaped clamping block close to the placement hole.

[0012] As a preferred solution of the automobile air-conditioning blower load test bench described in the present invention, the clamping assembly also includes a protective strip, a mounting column and a movable column, the movable column is fixedly connected to the top of the mounting block, the table surface of the truncated cone is provided with a sliding hole to cooperate with the movable column, the movable column passes through the sliding hole, the mounting column is fixedly connected to the top of the truncated cone, the protective strip is rotatably connected to the mounting column, the bottom of the protective strip is provided with an arc-shaped sliding groove, and the movable column is slidably arranged on the inner side of the arc-shaped sliding groove.

[0013] As a preferred solution of the automobile air-conditioning blower load test bench described in the present invention, the protective strip is arc-shaped, and a plurality of through holes are formed on the surface of the protective strip.

[0014] As a preferred solution of the automobile air-conditioning blower load test bench described in the present invention, the mounting block, the guide column and the movable column are all made of stainless steel material, and the mounting block, the guide column and the movable column are integrally formed.

[0015] As a preferred solution of the automobile air-conditioning blower load test bench described in the present invention, the truncated table is located at the center of the top plate, and the top plate, the support frame and the surface of the truncated table are all coated with anti-corrosion coating.

[0016] Based on the above-mentioned automobile air-conditioning blower load test bench, the present invention additionally provides an automobile air-conditioning blower load test bench and a test method, which specifically include the following steps:

[0017] S1, mark the two sides of the top plate as station A and station B respectively. Station A is responsible for loading and unloading the blower, and station B is responsible for load testing. The distance between the two sets of arc clamps of the two clamping mechanisms is the largest at station A and the smallest at station B. Arrange one worker at each of the two stations;

[0018] S2, during operation, the staff at station A places the blower on the round table through the placement hole, and the stepper motor drives the worm to rotate through two sets of sprockets and chains, and the worm drives the worm wheel to rotate, and the worm wheel drives the round table to rotate through the installation tube. When the round table rotates, it drives the two sets of clamping mechanisms to rotate. The stepper motor drives the round table to rotate 180° each time it runs. For one set of clamping mechanisms, when moving to station B, the push-pull column of the clamping mechanism first passes through the arc section of the driving groove and then passes through the horizontal section. When passing through the arc section of the driving groove, the push-pull column does not drive the slider to move. When passing through the horizontal section of the driving groove, it cooperates with the driving groove to drive the slider to move in the direction away from the adjacent placement hole. The slider passes through two sets of push-pull The rod drives the two groups of mounting blocks to approach each other, thereby making the two groups of arc-shaped clamping blocks approach each other and finally clamp the blower motor. When the two groups of mounting blocks approach each other, the two groups of protective strips are driven to close through the two groups of movable columns respectively, and the blower impeller is blocked by the two groups of protective strips. When moving to station A, the push-pull column of the clamping mechanism first passes through the circular arc section of the driving groove and then passes through the horizontal section. When passing through the circular arc section of the driving groove, the push-pull column does not drive the slider to move. When passing through the horizontal section of the driving groove, the slider is driven to move in the direction close to the adjacent placement hole in cooperation with the driving groove. The slider drives the two groups of mounting blocks to move away from each other through the two groups of push-pull rods, thereby making the two groups of arc-shaped clamping blocks open, and at the same time, the two groups of protective strips open;

[0019] S3, the staff at station A first loads the blower, and the stepper motor drives the round table to rotate, and transfers the blower to station B. During the transfer process, the blower is clamped and the blower impeller is shielded by two sets of protective strips. After the staff at station B conducts a load test, the stepper motor drives the round table to rotate and transfers the tested blower to station A. The staff at station A removes the tested blower and puts a new blower to be tested. The loading and unloading at station A and the testing at station B are carried out simultaneously.

[0020] Beneficial effects of the present invention:

[0021] 1. The device optimizes the load test process into blower loading and unloading and blower testing, and is operated by different staff members respectively. Compared with completing the entire load test process manually, the operation is simple and the manual workload is reduced. Blower loading and unloading and blower testing can be carried out simultaneously, which improves the efficiency of load testing.

[0022] 2. The device cooperates with the driving mechanism by setting up the clamping mechanism, so that the blower can automatically complete the clamping protection and release the clamping protection when it is transferred between workstations, further improving the blower testing efficiency and improving the safety of the blower testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0024] Figure 1 The present invention is a schematic diagram of the upper three-dimensional structure of an automobile air-conditioning blower load test bench.

[0025] Figure 2 The present invention is a schematic diagram of the bottom three-dimensional structure of an automobile air-conditioning blower load test bench.

[0026] Figure 3 The present invention is a schematic diagram of the three-dimensional structure of the bottom part of the top plate of an automobile air-conditioning blower load test bench.

[0027] Figure 4 For the present invention Figure 3 A magnified view of the structure of area A.

[0028] Figure 5 The present invention is a schematic diagram of the cross-sectional structure of a top plate portion of a load test bench for an automobile air-conditioning blower.

[0029] Figure 6 For the present invention Figure 5 A magnified view of the structure of region B.

[0030] Figure 7 The present invention is a schematic diagram of the three-dimensional structure of the protective strip part of the automobile air-conditioning blower load test bench.

[0031] Figure 8 The present invention is a three-dimensional structural schematic diagram of the working state of an automobile air-conditioning blower load test bench.

[0032] Description of the drawings: 100, main body; 101, top plate; 102, support frame; 103, round table; 103a, placement hole; 103b, sliding hole; 104, installation cylinder; 105, fixing plate; 106, support column; 107, positioning bead; 200, clamping mechanism; 201, guide rail; 202, slider; 203, push-pull column; 204, guide block; 205, installation block; 206, guide column; 207, push-pull rod; 208 , arc-shaped clamping block; 209, sliding column; 210, return spring; 211, limit block; 212, rubber pad; 213, protective strip; 213a, arc-shaped slide groove; 214, mounting column; 215, movable column; 300, driving mechanism; 301, primary support strip; 302, driving plate; 303, worm wheel; 304, secondary support strip; 305, bearing seat; 306, worm; 307, stepping motor; 308, sprocket. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0036] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0037] Example 1

[0038] A load test bench for an automobile air-conditioning blower, comprising:

[0039] The main body 100 includes a top plate 101, a support frame 102 is fixedly connected to the bottom of the top plate 101, a mounting opening is opened at the top of the support frame 102, a round table 103 is rotatably connected to the inner side of the mounting opening, a mounting cylinder 104 is fixedly connected to the center of the bottom of the round table 103, a fixing plate 105 is arranged directly below the mounting cylinder 104, the fixing plate 105 is fixedly connected to the support frame 102, a supporting column 106 is fixedly connected to the top of the fixing plate 105, the supporting column 106 is rotatably connected to the mounting cylinder 104, and two groups of placement holes 103a that fit with the automobile air-conditioning blower are symmetrically opened on the round table 103;

[0040] The clamping mechanism 200 is symmetrically arranged in two groups, and the two groups of clamping mechanisms 200 are respectively arranged in conjunction with the two groups of placement holes 103a. The clamping mechanism 200 includes a guide rail 201, a slider 202, a push-pull column 203 and a clamping assembly. The guide rail 201 is arranged in two groups, and the two groups of guide rails 201 are fixedly connected to the bottom of the truncated table 103 and are arranged parallel to each other. The slider 202 is slidably connected to the two groups of guide rails 201, and the bottom of the slider 202 is fixedly connected with a push-pull column 203. The clamping assembly is arranged in two groups, and the two groups of clamping assemblies are symmetrically arranged on both sides of the placement hole 103a. The clamping assembly includes a guide block 204, a mounting block 205, a guide column 206, a push-pull rod 207, an arc clamp block 208, a sliding column 209, a reset spring 210 and a limit block 211. The guide block 204 is fixedly connected to the bottom of the truncated table 103, and the mounting block 205 is arranged on the guide block 204 near the placement hole 103a. On one side, two groups of guide posts 206 are fixedly connected on the side of the mounting block 205 close to the guide block 204, and the two groups of guide posts 206 all penetrate the guide block 204 and are slidably connected with the guide block 204. Both ends of the push-pull rod 207 are rotatably connected with the mounting block 205 and the slider 202 respectively. The arc clamping block 208 is arranged on the side of the mounting block 205 close to the placement hole 103a. Two groups of sliding posts 209 are fixedly connected on the side of the arc clamping block 208 close to the mounting block 205. Both groups of sliding posts 209 all penetrate the mounting block 205 and are slidably connected with the mounting block 205. Two groups of return springs 210 and limit blocks 211 are arranged. The two groups of return springs 210 are respectively sleeved on the outsides of the two groups of sliding posts 209, and both ends of the two groups of return springs 210 are respectively abutted against the mounting block 205 and the arc clamping block 208. The two groups of limit blocks 211 are respectively fixedly connected to the side of the two groups of sliding posts 209 away from the arc clamping block 208.

[0041] The driving mechanism 300 includes a primary support slat 301, two groups of which are fixedly connected to the top of the fixed plate 105, and a driving disk 302 is fixedly connected to the top of the two groups of primary support slats 301. The driving disk 302 is sleeved on the outside of the support column 106, and an annular driving groove is opened on the top of the driving disk 302. The driving groove is horizontal on one side close to one group of placement holes 103a, and is arc-shaped on the side close to the other group of placement holes 103a. Both groups of push-pull columns 203 are slidably arranged on the inner side of the driving groove, and a worm gear 303 is fixedly sleeved on the outside of the mounting cylinder 104. Two groups of secondary support slats are also fixedly connected to the top of the fixed plate 105. 304, the tops of the two groups of secondary support slats 304 are fixedly connected with bearing seats 305, a worm 306 is arranged between the two groups of bearing seats 305, the worm 306 is rotatably connected to the two groups of bearing seats 305 and passes through the two groups of bearing seats 305, the worm wheel 303 and the worm 306 are meshed with each other, a stepper motor 307 is fixedly connected to the inner side of one group of secondary support slats 304, the rotating shaft of the stepper motor 307 passes through the adjacent secondary support slats 304 and is rotatably connected to the secondary support slats 304, a sprocket 308 is fixedly connected to the end of the rotating shaft of the secondary support slat 304 and one end of the rotating shaft of the worm 306, and the two groups of sprockets 308 are connected through chain transmission.

[0042] Among them, the main body 100 also includes two groups of positioning beads 107, and the two groups of positioning beads 107 are fixedly connected to the two sides of the bottom of the truncated table 103 respectively. Positioning grooves are opened at the positions of the top plate 101 facing the two groups of positioning beads 107. The two groups of positioning beads 107 are respectively inserted into the two groups of positioning grooves. When the positioning beads 107 are inserted into the positioning grooves, the distance between the two groups of arc-shaped clamping blocks 208 of one group of clamping mechanisms 200 reaches the minimum, and the distance between the two groups of arc-shaped clamping blocks 208 of the other group of clamping mechanisms 200 reaches the maximum. The positioning beads 107 are used to improve the accuracy of device positioning.

[0043] In addition, the clamping assembly further includes a rubber pad 212, which is fixedly connected to one side of the arc-shaped clamping block 208 close to the placement hole 103a. The rubber pad 202 is used to prevent the blower from being damaged by excessive clamping force.

[0044] In addition, the clamping assembly also includes a protective strip 213, a mounting column 214 and a movable column 215. The movable column 215 is fixedly connected to the top of the mounting block 205. A sliding hole 103b is provided on the surface of the truncated table 103 to cooperate with the movable column 215. The movable column 215 passes through the sliding hole 103b. The mounting column 214 is fixedly connected to the top of the truncated table 103. The protective strip 213 is rotatably connected to the mounting column 214. An arc-shaped sliding groove 213a is provided at the bottom of the protective strip 213. The movable column 215 is slidably arranged on the inner side of the arc-shaped sliding groove 213a.

[0045] It should be noted that the protective slats 213 are arc-shaped, ensuring that the two groups of protective slats 213 can play a protective role. The surface of the protective slats 213 is provided with several groups of through holes, which are used to reduce the overall weight of the device. The mounting block 205, the guide column 206 and the movable column 215 are all made of stainless steel, which is corrosion-resistant. The mounting block 205, the guide column 206 and the movable column 215 are integrally formed, which is beneficial to ensuring the structural strength. The table 103 is located at the center of the top plate 101, which is beneficial to ensuring the stability of the device structure. The surfaces of the top plate 101, the support frame 102 and the table 103 are coated with anti-corrosion paint, which is used to further improve the anti-corrosion performance of the device.

[0046] Example 2

[0047] A method for testing a load of an automobile air conditioner blower, based on Example 1, specifically comprises the following steps:

[0048] S1, the two sides of the top plate 101 are marked as station A and station B respectively, station A is responsible for loading and unloading the blower, station B is responsible for load testing, the two sets of arc clamping blocks 208 of the two sets of clamping mechanisms 200 are at the largest distance at station A and at the smallest distance at station B, and one staff member is arranged at each of the two stations;

[0049] S2, during operation, the staff at station A places the blower on the truncated table 103 through the placement hole 103a, and the stepper motor 307 drives the worm 306 to rotate through two sets of sprockets 308 in cooperation with the chain, and the worm 306 drives the worm wheel 303 to rotate, and the worm wheel 303 drives the truncated table 103 to rotate through the mounting tube 104, and the rotation of the truncated table 103 drives the two sets of clamping mechanisms 200 to rotate, and the stepper motor 307 drives the truncated table 103 to rotate 180° each time it runs. For one set of clamping mechanisms 200, when moving to station B, the push-pull column 203 of the clamping mechanism 200 first passes through the arc section of the driving groove and then passes through the horizontal section. When passing through the arc section of the driving groove, the push-pull column 203 does not drive the slider 202 to move, and when passing through the horizontal section of the driving groove, it cooperates with the driving groove to drive the slider 202 to move in the direction away from the adjacent placement hole 103a. The slider 20 The two groups of mounting blocks 205 are driven to approach each other through the two groups of push-pull rods 207, so that the two groups of arc-shaped clamping blocks 208 are driven to approach each other and finally clamp the blower motor. When the two groups of mounting blocks 205 are driven to approach each other, the two groups of protective strips 213 are driven to close through the two groups of movable columns 215, and the blower impeller is blocked by the two groups of protective strips 213. When moving to the A station, the push-pull column 203 of the clamping mechanism 200 first passes through the arc section of the driving groove and then passes through the horizontal section. When passing through the arc section of the driving groove, the push-pull column 203 does not drive the slider 202 to move. When passing through the horizontal section of the driving groove, the slider 202 is driven to move in the direction close to the adjacent placement hole 103a in cooperation with the driving groove. The slider 202 drives the two groups of mounting blocks 205 away from each other through the two groups of push-pull rods 207, so that the two groups of arc-shaped clamping blocks 208 are opened, and the two groups of protective strips 213 are opened at the same time.

[0050] S3, the staff at station A first loads the blower, and the stepper motor 307 drives the round table 103 to rotate, and transfers the blower to station B. During the transfer process, the blower is clamped and the blower impeller is shielded by two sets of protective strips 213. After the staff at station B performs a load test, the stepper motor 307 drives the round table 103 to rotate, and transfers the tested blower to station A. The staff at station A removes the tested blower and puts a new blower to be tested. The loading and unloading at station A and the testing at station B are carried out simultaneously.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A load test bench for automobile air-conditioning blower, characterized in that: include: A main body (100) comprises a top plate (101), the bottom of the top plate (101) is fixedly connected to a support frame (102), the top of the support frame (102) is provided with a mounting opening, the inner side of the mounting opening is rotatably connected to a truncated platform (103), the bottom center of the truncated platform (103) is fixedly connected to a mounting cylinder (104), a fixing plate (105) is arranged directly below the mounting cylinder (104), the fixing plate (105) is fixedly connected to the support frame (102), the top of the fixing plate (105) is fixedly connected to a supporting column (106), the supporting column (106) is rotatably connected to the mounting cylinder (104), and the truncated platform (103) is symmetrically provided with two groups of placement holes (103a) that fit with the automobile air-conditioning blower; The clamping mechanism (200) is symmetrically arranged in two groups, and the two groups of the clamping mechanism (200) are respectively arranged in cooperation with the two groups of placement holes (103a). The clamping mechanism (200) comprises a guide rail (201), a slider (202), a push-pull column (203) and a clamping assembly. The guide rail (201) is arranged in two groups, and the two groups of the guide rails (201) are fixedly connected to the bottom of the truncated table (103) and are arranged parallel to each other. The slider (202) is slidably connected to the two groups of the guide rails (201), and the bottom of the slider (202) is The top of the truncated cone (103) is fixedly connected with a push-pull column (203), and the clamping assembly is provided with two groups. The two groups of clamping assemblies are symmetrically arranged on both sides of the placement hole (103a). The clamping assembly includes a guide block (204), a mounting block (205), a guide column (206), a push-pull rod (207), an arc-shaped clamping block (208), a sliding column (209), a return spring (210) and a limit block (211). The guide block (204) is fixedly connected to the bottom of the truncated cone (103), and the mounting block (205) is arranged on the guide block (204) near the placement hole (103a). a), two groups of guide posts (206) are fixedly connected on a side of the mounting block (205) close to the guide block (204), both groups of guide posts (206) penetrate the guide block (204) and are slidably connected to the guide block (204), both ends of the push-pull rod (207) are rotatably connected to the mounting block (205) and the slider (202), the arc-shaped clamping block (208) is arranged on a side of the mounting block (205) close to the placement hole (103a), and the sliding post (209) is arranged on the side of the arc-shaped clamping block (208) close to the mounting block (205). Two groups are fixedly connected on one side, the two groups of sliding columns (209) both penetrate the mounting block (205) and are slidably connected to the mounting block (205), and two groups of return springs (210) and limit blocks (211) are provided, the two groups of return springs (210) are respectively sleeved on the outside of the two groups of sliding columns (209), and the two ends of the two groups of return springs (210) are respectively abutted against the mounting block (205) and the arc-shaped clamping block (208), and the two groups of limit blocks (211) are respectively fixedly connected to the side of the two groups of sliding columns (209) away from the arc-shaped clamping block (208); The driving mechanism (300) comprises a primary support slat (301), wherein two groups of the primary support slat (301) are fixedly connected to the top of the fixed plate (105), and a driving disk (302) is fixedly connected to the top of the two groups of primary support slats (301), and the driving disk (302) is sleeved on the outside of the support column (106). An annular driving groove is opened on the top of the driving disk (302), and the side of the driving groove close to one group of placement holes (103a) is horizontal, and the side close to the other group of placement holes (103a) is in an arc shape, and the two groups of push-pull columns (203) are slidably arranged on the inner side of the driving groove, and a worm gear (303) is fixedly sleeved on the outside of the installation cylinder (104), and the top of the fixed plate (105) is also fixedly connected to two groups of secondary support slats (304). ), the tops of the two groups of secondary support slats (304) are fixedly connected with bearing seats (305), a worm (306) is arranged between the two groups of bearing seats (305), the worm (306) is rotatably connected to the two groups of bearing seats (305) and passes through the two groups of bearing seats (305), the worm wheel (303) and the worm (306) are meshed with each other, a stepper motor (307) is fixedly connected to the inner side of one group of secondary support slats (304), the rotating shaft of the stepper motor (307) passes through the adjacent secondary support slats (304) and is rotatably connected to the secondary support slats (304), the end of the rotating shaft of the secondary support slat (304) and one end of the rotating shaft of the worm (306) are fixedly connected with a sprocket (308), and the two groups of sprockets (308) are connected by chain transmission.

2. The automobile air-conditioning blower load test bench according to claim 1, characterized in that: The main body (100) further comprises two groups of positioning beads (107), the two groups of positioning beads (107) being fixedly connected to the two sides of the bottom of the truncated table (103) respectively, and the top plate (101) is provided with positioning grooves at positions opposite to the two groups of positioning beads (107), the two groups of positioning beads (107) being respectively inserted into the two groups of positioning grooves, and when the positioning beads (107) are inserted into the positioning grooves, the distance between the two groups of arc-shaped clamping blocks (208) of one group of clamping mechanisms (200) reaches the minimum, and the distance between the two groups of arc-shaped clamping blocks (208) of the other group of clamping mechanisms (200) reaches the maximum.

3. The automobile air-conditioning blower load test bench according to claim 2, characterized in that: The clamping assembly further comprises a rubber pad (212), wherein the rubber pad (212) is fixedly connected to a side of the arc-shaped clamping block (208) close to the placement hole (103a).

4. The automobile air-conditioning blower load test bench according to claim 3 is characterized in that: The clamping assembly also includes a protective strip (213), a mounting column (214) and a movable column (215); the movable column (215) is fixedly connected to the top of the mounting block (205); a sliding hole (103b) is provided on the table surface of the truncated table (103) to cooperate with the movable column (215); the movable column (215) passes through the sliding hole (103b); the mounting column (214) is fixedly connected to the top of the truncated table (103); the protective strip (213) is rotatably connected to the mounting column (214); an arc-shaped sliding groove (213a) is provided at the bottom of the protective strip (213); and the movable column (215) is slidably arranged on the inner side of the arc-shaped sliding groove (213a).

5. The automobile air-conditioning blower load test bench according to claim 4, characterized in that: The protective strip (213) is arc-shaped, and a plurality of groups of through holes are formed on the surface of the protective strip (213).

6. The automobile air-conditioning blower load test bench according to claim 5, characterized in that: The mounting block (205), the guide column (206) and the movable column (215) are all made of stainless steel material, and the mounting block (205), the guide column (206) and the movable column (215) are integrally formed.

7. The automobile air-conditioning blower load test bench according to claim 6, characterized in that: The truncated platform (103) is located at the center of the top plate (101), and the surfaces of the top plate (101), the support frame (102) and the truncated platform (103) are all coated with anti-corrosion paint.

8. A method for testing the load of an automobile air-conditioning blower, using the test bench described in claim 7, characterized in that: The specific steps include: S1, the two sides of the top plate (101) are respectively marked as station A and station B, station A is responsible for loading and unloading the blower, station B is responsible for load testing, the two sets of arc-shaped clamping blocks (208) of the two sets of clamping mechanisms (200) are at the largest distance at station A and at the smallest distance at station B, and one staff member is arranged at each of the two stations; S2, when working, the staff of station A places the blower on the round table (103) through the placement hole (103a), and the stepper motor (307) drives the worm (306) to rotate through two sets of sprockets (308) in cooperation with the chain, and the worm (306) drives the worm wheel (303) to rotate, and the worm wheel (303) drives the round table (103) to rotate through the installation cylinder (104). When the round table (103) rotates, it drives the two sets of clamping mechanisms (200) to rotate, and the stepper motor (3 07) Each time the driving table (103) is operated, it rotates 180°. For a set of clamping mechanisms (200), when moving to station B, the push-pull column (203) of the clamping mechanism (200) first passes through the arc section of the driving groove and then passes through the horizontal section. When passing through the arc section of the driving groove, the push-pull column (203) does not drive the slider (202) to move. When passing through the horizontal section of the driving groove, the push-pull column (203) cooperates with the driving groove to drive the slider (202) to move in a direction away from the adjacent placement hole (103a). (202) The two groups of mounting blocks (205) are driven to approach each other through the two groups of push-pull rods (207), thereby making the two groups of arc-shaped clamping blocks (208) approach each other and finally clamp the blower motor. When the two groups of mounting blocks (205) are approaching each other, the two groups of protective strips (213) are driven to close through the two groups of movable columns (215), and the blower impeller is shielded by the two groups of protective strips (213). When moving to the A station, the push-pull column (203) of the clamping mechanism (200) first passes through The arc section of the driving groove then passes through the horizontal section. When passing through the arc section of the driving groove, the push-pull column (203) does not drive the slider (202) to move. When passing through the horizontal section of the driving groove, the slider (202) is driven to move in a direction close to the adjacent placement hole (103a) in cooperation with the driving groove. The slider (202) drives the two groups of mounting blocks (205) to move away from each other through the two groups of push-pull rods (207), thereby causing the two groups of arc-shaped clamping blocks (208) to open, and at the same time, the two groups of protective strips (213) to open; S3, the staff at station A first loads the blower, and the stepper motor (307) drives the round table (103) to rotate, and transfers the blower to station B. During the transfer process, the blower is clamped and the blower impeller is shielded by two sets of protective strips (213). After the staff at station B performs a load test, the stepper motor (307) drives the round table (103) to rotate, and transfers the tested blower to station A. The staff at station A removes the tested blower and puts a new blower to be tested. The loading and unloading at station A and the testing at station B are carried out simultaneously.

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