Load rotating speed testing device for new energy automobile

Abstract

The invention relates to the technical field of motor rotating speed testing, in particular to a load rotating speed testing device for a new energy automobile. According to the technical scheme, the device comprises a positioning pipeline assembly, a motor connecting assembly is installed in the positioning pipeline assembly, an auxiliary installation assembly is installed outside the positioning pipeline assembly, and a testing assembly is attached to the side, penetrating through the positioning pipeline assembly, of the motor connecting assembly. According to the invention, the two side edges of the plurality of clamping frames are attached to the side edges of the driving wheel and the test roller, so that when a vehicle is detected, because the installation precision of the coupling is not enough or the pressure applied to the coupling is too large, the motor output shaft and the power measurement unit of the test device are eccentric; when additional vibration is generated, the device is prevented from being separated from the pressure range provided by the test roller, thereby avoiding displacement deviation of the test roller or measurement errors caused by vibration of the driving wheel.

Description

Technical Field

[0001] The present invention relates to the technical field of motor speed testing, and in particular to a load speed testing device for new energy vehicles. Background Art

[0002] For the motor and transmission system of new energy vehicles, the load speed test device can accurately measure the speed change of the motor under different loads. This helps to evaluate the output characteristics of the motor, such as the speed range corresponding to the maximum power and maximum torque, and the efficiency curve of the motor.

[0003] When mechanically connecting a new energy vehicle to a test device, problems may arise such as loose connections and inaccurate alignment. For example, insufficient friction between the vehicle's drive wheels and the test rollers can cause slippage during high-load tests, affecting the accuracy of test data.

[0004] In the patent document with the publication number CN115307937B, a load speed test device for new energy vehicles is disclosed, which connects the connector and the movable shaft together by a snap-fit ​​method, making the connector easier to disassemble and assemble, so that the connector can be replaced according to the type of automobile motor to be tested, better meeting the connection test requirements of different types of automobile motors; when the connector and the movable shaft are snap-fitted together, the hollow movable block is affected by the thrust of the spring A and contacts the inner sides of the four hooks, preventing the hooks from bending inwards, thereby ensuring the firmness of the connection between the connector and the movable shaft. When the connector needs to be disassembled, the hollow movable block is moved in the opposite direction to separate the hollow movable block from the inner sides of the four hooks. When the hooks are able to bend inwards, the connector can be pulled to separate, making the operation easier.

[0005] When the above device is in use, it utilizes the pressure generated by the contact between the vehicle driving wheel and the test roller to test the motor and transmission system of the new energy vehicle. The traditional roller is squeezed with the vehicle driving wheel. Due to insufficient installation accuracy of the coupling or excessive pressure on the coupling, there is eccentricity between the motor output shaft and the power measurement unit of the test device, resulting in additional vibration and stress, which may damage the equipment and cause measurement errors.

[0006] Therefore, the present application proposes a load speed testing device for new energy vehicles. Summary of the invention

[0007] The purpose of the present invention is to propose a load speed test device for new energy vehicles to address the problem in the background technology that a traditional roller is squeezed between a vehicle drive wheel, and due to insufficient installation accuracy of the coupling or excessive pressure on the coupling, there is eccentricity between the motor output shaft and the power measurement unit of the test device, resulting in additional vibration and stress, which may damage the equipment and cause measurement errors.

[0008] The technical solution of the present invention is as follows: a load speed test device for new energy vehicles, comprising a positioning pipe assembly, a motor connection assembly is installed inside the positioning pipe assembly, an auxiliary installation assembly is installed outside the positioning pipe assembly, and a test assembly is attached to one side of the motor connection assembly passing through the positioning pipe assembly;

[0009] The motor connection assembly comprises an end threaded sleeve, a connection plug is fixedly installed inside the end threaded sleeve, and a driving wheel is installed on one side of the connection plug through a coupling assembly installed inside;

[0010] The test assembly comprises a base, a test drive is fixedly installed on the top of the base, a test rod is installed on one side of the test drive, a test roller is fixedly installed on the side of the test rod away from the test drive, and the test roller is arranged in a close contact state with the driving wheel, a fixing ring is fixedly installed on one side of the base, a limiting collar is slidably installed on the outer side of the base, and an auxiliary spring telescopic rod is fixedly installed between the limiting collar and the base, a plurality of hinged rods are hinged on the outer side of the limiting collar, and the plurality of hinged rods are arranged in a ring state with respect to the surface of the limiting collar;

[0011] A fixing ring is fixedly installed on the top of the base, and a fixed positioning block with the same number as the hinge rod is hinged on the outer side of the fixing ring. The side of the hinge rod away from the limiting ring is hinged on the outer side of the fixed positioning block, and a clamping frame is fixedly installed on one side of the fixed positioning block, and the clamping frame is slidably connected to the outer wall of the test roller and the driving wheel.

[0012] Optionally, limited arc blocks are slidably installed on the inner walls of both sides of the snap-fit ​​frame through sliding grooves, a pressure sensing component is fixedly installed inside the sliding groove of the snap-fit ​​frame, an airbag compression rod is fixedly installed on one side of the pressure sensing component, a limited arc block is fixedly installed on the bottom of the airbag compression rod, and the limited arc block is attached to the outer side of the driving wheel and the test roller.

[0013] Optionally, the positioning pipe assembly includes a positioning cylinder slidably mounted on the outside of the end threaded sleeve, one side of the end threaded sleeve is fixedly mounted with an auxiliary positioning cylinder via a fixing rod, and the auxiliary positioning cylinder is fixedly mounted on one side of the driving wheel.

[0014] Optionally, the auxiliary installation component includes a fixed transverse block fixedly installed on the outside of the positioning cylinder, and the two sides of the fixed transverse block are slidably connected with an auxiliary sliding rod frame and a clamping sliding rod through sliding rails. The auxiliary sliding rod frame and the outside of the clamping sliding rod are fixedly installed with a fixed plate, and the auxiliary sliding rod frame and the clamping sliding rod are arranged in a synchronous moving state.

[0015] Optionally, a compression airbag is fixedly mounted on one side of the clamping slide rod, a side of the placement and positioning tube facing the compression airbag is an arc-shaped edge, and the compression airbag and the arc-shaped edge of the placement and positioning tube are arranged in a matching state.

[0016] Optionally, a first connecting sleeve is fixedly installed on the side of the auxiliary sliding rod frame away from the clamping sliding rod, a semicircular sealed compression air bag is fixedly installed on one side of the first connecting sleeve, two limiting rings are fixedly installed on the outer side of the auxiliary positioning cylinder, and the semicircular sealed compression air bag is fixedly installed on the outer side of a limiting ring on the side away from the first connecting sleeve.

[0017] Optionally, a telescopic positioning rod is fixedly installed on one side of the limiting ring, the telescopic end of the telescopic positioning rod is fixedly installed on the outside of the auxiliary sliding rod frame, an annular block is fixedly installed on the bottom of the auxiliary sliding rod frame, and a positioning spring is fixedly installed between the annular block and the telescopic positioning rod.

[0018] Optionally, a gear slide is fixedly mounted on the bottom of the annular sleeve block, and a gear is meshingly connected to the outer side of the gear slide, and the gear is arranged on the outer side of the auxiliary positioning cylinder.

[0019] Optionally, the telescopic positioning rod passes through the annular sleeve block and one side of the limiting sleeve ring, and a second connecting sleeve rod is fixedly installed on one side of the second connecting sleeve rod. A water storage air bag is fixedly installed on one side of the second connecting sleeve rod.

[0020] Optionally, a plurality of locking grooves are provided on the outer side of the positioning cylinder, a receiving groove is provided on the side of the end threaded sleeve facing the locking groove, a tilting rod is hinged on the outer side of the receiving groove, a blocking limit plate adapted to the locking groove is hinged on one side of the tilting rod, a spring is fixedly installed between the blocking limit plate and the receiving groove, a transverse positioning rod is fixedly installed on the bottom of the blocking limit plate, and a dual-purpose positioning nut is provided on one side of the end threaded sleeve.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. As the portion of the test rod with an outer diameter larger than the inner diameter of the limiting collar contacts the limiting collar, the limiting collar slides along the base toward the driving wheel under the limitation of the auxiliary spring telescopic rod, thereby positioning the test roller, and the two side edges of the multiple engaging frames fit the sides of the driving wheel and the test roller. When the vehicle is tested, due to insufficient installation accuracy of the coupling or excessive pressure on the coupling, there is eccentricity between the motor output shaft and the power measurement unit of the test device, which prevents the vehicle from escaping from the pressure range given by the test roller when additional vibration is generated, thereby avoiding displacement deviation of the test roller or measurement error of the driving wheel due to vibration;

[0023] 2. The second connecting sleeve drives the compressed water storage airbag to change from a compressed state to an expanded state, and fits on the side of the driving wheel to wrap the outside of the auxiliary positioning cylinder, and fills the water storage airbag with coolant, and then uses the elasticity of the airbag to reduce the vibration of the measuring component, and surrounds the side of the coupling component to reduce the heat around the coupling component, so as to avoid the coupling component's sensing component being damaged due to excessive heat, resulting in inaccurate detection;

[0024] 3. The inner wall of the dual-purpose positioning nut is inclined toward the end threaded sleeve and installed on the end threaded sleeve. Then, the transverse positioning rod is contacted by the inclined inner wall of the dual-purpose positioning nut and stored in the storage groove. The blocking limit plate is completely out of contact with the positioning groove. The motor connection assembly is removed from the positioning pipe assembly. The compression airbag and the end threaded sleeve generate relative friction, and the dust or oil on the surface of the end threaded sleeve is cleaned, thereby simplifying the installation and removal of the connector and better preventing dust or oil from interfering with the use of the equipment.

[0025] 4. The lower surface of the lateral positioning rod is pushed through the upper surface of the dual-purpose positioning nut, so that the blocking limit plate is completely stuck in the positioning groove through the tilting rod, thereby achieving stability and simple installation of the connecting component. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A structural schematic diagram of a load speed testing device of the present invention is given;

[0027] Figure 2 The present invention is given Figure 1 Enlarged view of the middle A area;

[0028] Figure 3 A schematic structural diagram of a fixing ring of the present invention is given;

[0029] Figure 4 A schematic structural diagram of the compressed air bag of the present invention is given;

[0030] Figure 5 The present invention is given Figure 4 Enlarged view of the middle B area;

[0031] Figure 6 A schematic structural diagram of a blocking type limiting plate of the present invention is given;

[0032] Figure 7 The present invention is given Figure 6 Enlarged view of the middle C area;

[0033] Figure 8 The present invention is given Figure 6 Enlarged view of the middle D area;

[0034] Fig. 9 A schematic structural diagram of the positioning spring of the present invention is given;

[0035] Fig.10 The present invention is given Fig. 9 Enlarged view of the middle E region;

[0036] Fig.11 A schematic structural diagram of the test roller of the present invention is given.

[0037] Figure numerals: 1. Positioning pipe assembly; 101. Positioning cylinder; 102. Positioning groove; 103. Auxiliary positioning cylinder; 2. Auxiliary installation assembly; 201. Fixed transverse block; 202. Clamping slide bar; 203. Compression air bag; 204. Auxiliary slide bar frame; 205. Annular sleeve block; 206. Telescopic positioning rod; 207. Positioning spring; 208. Gear slide bar; 209. Gear; 210. First connecting sleeve rod; 211. Semicircular sealing compression air bag; 212. Limiting sleeve ring; 213. Second connecting sleeve rod; 214. Water storage air bag; 3. Motor connection assembly; 30 1. End threaded sleeve; 302. Dual-purpose positioning nut; 303. Connecting plug; 304. Blocking limit plate; 305. Tilt rod; 306. Storage slot; 307. Spring; 308. Transverse positioning rod; 309. Driving wheel; 4. Test assembly; 401. Test drive; 402. Test rod; 403. Base; 404. Limiting collar; 405. Hinge rod; 406. Pressure sensing assembly; 407. Fixed ring; 408. Airbag compression rod; 409. Clamping frame; 410. Fixed positioning block; 411. Limiting arc block; 412. Test roller. DETAILED DESCRIPTION

[0038] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0039] like Figure 1 As shown, the load speed test device for new energy vehicles proposed by the present invention comprises a positioning pipe assembly 1, a motor connection assembly 3 is installed inside the positioning pipe assembly 1, an auxiliary installation assembly 2 is installed outside the positioning pipe assembly 1, the motor connection assembly 3 passes through one side of the positioning pipe assembly 1 and is attached with a test assembly 4, the new energy vehicle is placed on the test bench, it is ensured that the driving wheel 309 of the vehicle is in close contact with the test roller 412, and the motor output shaft of the vehicle is connected to the driving wheel 309 of the test device through a suitable coupling, and during the detection process, the electrical system of the vehicle is connected to obtain and monitor the operation data of the vehicle;

[0040] like Figure 1-Figure 8As shown, the positioning pipe assembly 1 includes a placement and positioning cylinder 101 slidably mounted on the outer side of the end threaded sleeve 301, one side of the end threaded sleeve 301 is fixedly mounted with an auxiliary positioning cylinder 103 through a fixed rod, the auxiliary positioning cylinder 103 is fixedly mounted on one side of the driving wheel 309, the auxiliary mounting assembly 2 includes a fixed transverse block 201 fixedly mounted on the outer side of the placement and positioning cylinder 101, both sides of the fixed transverse block 201 are slidably connected with auxiliary sliding rod frames 204 and clamping slide bars 202 through slide rails, the auxiliary sliding rod frames 204 and the outer sides of the clamping slide bars 202 are fixedly mounted with fixed plates, the auxiliary sliding rod frames 204 and the clamping slide bars 202 are arranged in a synchronous moving state, a compressed air bag 203 is fixedly mounted on one side of the clamping slide bar 202, the side of the placement and positioning cylinder 101 facing the compressed air bag 203 is an arc-shaped edge, and the compressed air bag 203 is arranged in an adaptive state with the arc-shaped edge of the placement and positioning cylinder 101, and the auxiliary sliding rod frame 204 is away from the clamping slide bar 202. A first connecting sleeve rod 210 is fixedly installed on the side, a semicircular sealed compression airbag 211 is fixedly installed on one side of the first connecting sleeve rod 210, two limiting collars 212 are fixedly installed on the outer side of the auxiliary positioning cylinder 103, a side of the semicircular sealed compression airbag 211 away from the first connecting sleeve rod 210 is fixedly installed on the outer side of a limiting collar 212, a telescopic positioning rod 206 is fixedly installed on one side of a limiting collar 212, the telescopic end of the telescopic positioning rod 206 is fixedly installed on the outer side of the auxiliary sliding rod frame 204, an annular sleeve block 205 is fixedly installed on the bottom of the auxiliary sliding rod frame 204, a positioning spring 207 is fixedly installed between the annular sleeve block 205 and the telescopic positioning rod 206, the positioning spring 207 reduces the vibration sense transmitted by the driving wheel 309, a gear slide 208 is fixedly installed on the bottom of the annular sleeve block 205, the outer side of the gear slide 208 is meshingly connected with a gear 209, and the gear 209 is arranged on the outer side of the auxiliary positioning cylinder 103;

[0041] Then the telescopic positioning rod 206 passes through the annular sleeve block 205 and a second connecting sleeve rod 213 is fixedly installed on one side of the limiting sleeve ring 212, and a water storage airbag 214 is fixedly installed on one side of the second connecting sleeve rod 213. When the equipment needs to be tested, the end threaded sleeve 301 is relatively connected to the motor output shaft through the connecting plug block 303, and the forward and reverse motor fixedly installed on the auxiliary positioning cylinder 103 drives the gear 209 to rotate. The gear 209 drives the telescopic end of the telescopic positioning rod 206 to move toward the driving wheel 309 by meshing with the gear slide bar 208, and the telescopic positioning rod 206 passes through one side of the limiting sleeve ring 212. The second connecting sleeve 213 is driven by the end to fit on the side of the driving wheel 309, and the driving wheel 309 provides a pressure, so that the driving wheel 309 is closely fitted with the test roller 412. At the same time, the second connecting sleeve 213 drives the water storage airbag 214 in a compressed state to change from a compressed state to an expanded state and fit on the side of the driving wheel 309 to wrap the outside of the auxiliary positioning cylinder 103, and fill the water storage airbag 214 with coolant, and then use the elasticity of the airbag to reduce the vibration of the measuring component, and surround the coupling component around the side, reduce the heat around the coupling component, and avoid the coupling component's sensing component being damaged due to excessive heat, resulting in inaccurate detection;

[0042] When the water storage bladder 214 is compressed again, the internal coolant can be discharged and collected.

[0043] like Figure 1-Figure 7 As shown, the motor connection assembly 3 includes an end threaded sleeve 301, a connection plug 303 is fixedly installed inside the end threaded sleeve 301, and a driving wheel 309 is installed on one side of the connection plug 303 through a coupling assembly installed inside. In order to improve the stability of the driving wheel 309, a rotating base can be rotatably installed at the bottom of the driving wheel 309, and the outer side of the driving wheel 309 rotates under the limit of the rotating base;

[0044] A plurality of positioning grooves 102 are provided on the outer side of the positioning cylinder 101, a receiving groove 306 is provided on the side of the end threaded sleeve 301 facing the positioning groove 102, a tilting rod 305 is hinged on the outer side of the receiving groove 306, a blocking limit plate 304 adapted to the positioning groove 102 is hinged on one side of the tilting rod 305, a spring 307 is fixedly installed between the blocking limit plate 304 and the receiving groove 306, a transverse positioning rod 308 is fixedly installed on the bottom of the blocking limit plate 304, a dual-purpose positioning nut 302 is provided on one side of the end threaded sleeve 301, and the staff will fix the end The upper threaded sleeve 301 is inserted into the positioning cylinder 101, and the end threaded sleeve 301 can be rotated for a certain angle until the blocking limit plate 304 is half inserted into the positioning groove 102 according to the elastic force of the spring 307, thereby achieving preliminary installation. Then the staff rotates the threaded end of the dual-purpose positioning nut 302 along the thread of the end threaded sleeve 301 until the transverse positioning rod 308 contacts the dual-purpose positioning nut 302. At this time, one end of the transverse positioning rod 308 is arc-shaped and the upper end surface of the transverse positioning rod 308 under normal conditions is higher than the outer side of the dual-purpose positioning nut 302. Fig. 9 , and the lower surface of the transverse positioning rod 308 is pushed by the upper surface of the dual-purpose positioning nut 302, that is, the transverse positioning rod 308 moves upward, so that the blocking limit plate 304 is completely stuck in the positioning groove 102 through the tilting rod 305, thereby achieving the stability and simplicity of installation of the connecting component. Compared with the four hooks in the reference document, the inner sides of the hooks are in contact, so that the hooks use their own deformation force to bend and install, and if they remain in the bent state for a long time, it is easy to cause the hooks to deform excessively and become loosely installed;

[0045] When the motor connection assembly 3 needs to be removed, the staff first removes the dual-purpose positioning nut 302 from the end threaded sleeve 301, and then the forward and reverse motor drives the gear 209 to rotate, and the auxiliary slide rod frame 204 and the clamping slide rod 202 move toward the dual-purpose positioning nut 302 along the fixed transverse block 201. At this time, the auxiliary slide rod frame 204 drives the semi-circular sealed compression airbag 211 to move toward the side of the positioning cylinder 101 through the first connecting sleeve rod 210, and the semi-circular sealed compression airbag 211 moves from the compression sleeve 211 to the compression sleeve 211. The state changes to the extended state, and the semicircular sealed compressed airbag 211 cooperates with the outer surface of the fixing rod to produce a sealing effect on the gap between the placement positioning cylinder 101 and the auxiliary positioning cylinder 103, thereby preventing a large amount of oil or pipes from entering the interior of the equipment during the next test. When the semicircular sealed compressed airbag 211 is away from the placement positioning cylinder 101, the placement positioning cylinder 101 and the auxiliary positioning cylinder 103 are inserted with the dual-purpose positioning nut 302, and at this time, oil and other objects cannot enter the placement positioning cylinder 101 and the auxiliary positioning cylinder 103. , and it is convenient to dissipate heat for the dual-purpose positioning nut 302, and the clamping slide bar 202 drives the compressed air bag 203 to move along the arc-shaped edge of the positioning tube 101 toward the dual-purpose positioning nut 302, and the compressed air bag 203 in the compressed state returns to its original state, squeezing the transverse positioning rod 308, so that the transverse positioning rod 308 drives the blocking limit plate 304 away from the clamping groove 102, and at the same time, the dual-purpose positioning nut 302 is installed with the inner wall of the inclined side facing the end threaded sleeve 301 and installed on the end threaded sleeve On 301, the lateral positioning rod 308 is contacted by the inclined inner wall of the dual-purpose positioning nut 302 and received in the receiving groove 306, and the blocking limit plate 304 is completely out of contact with the positioning groove 102. The motor connection assembly 3 is removed from the positioning pipe assembly 1, and the compression airbag 203 and the end threaded sleeve 301 produce relative friction, and the dust or oil on the surface of the end threaded sleeve 301 is cleaned, so that the installation and removal of the connector is relatively simple, and the interference of dust or oil on the use of the equipment is better prevented.

[0046] like Figure 1-Figure 11As shown, a fixing ring 407 is fixedly installed on the top of the base 403, and a fixed positioning block 410 having the same number as the hinge rod 405 is hinged on the outer side of the fixing ring 407, and the side of the hinge rod 405 away from the limiting ring 404 is hinged on the outer side of the fixed positioning block 410, and a snap-fit ​​frame 409 is fixedly installed on one side of the fixed positioning block 410, and the snap-fit ​​frame 409 is slidably connected to the outer wall of the test roller 412 and the driving wheel 309. As the part where the outer diameter of the test rod 402 is larger than the annular inner diameter of the limiting ring 404 contacts the limiting ring 404, the limiting ring 404 slides along the base 403 toward the driving wheel 309 under the limitation of the auxiliary spring telescopic rod, Then, the position of the test roller 412 is located, and since the fixing ring 407 is in a fixed state, the limiting collar 404 drives the hinge rod 405 to be deflected. At this time, the fixed positioning block 410 is deflected to be perpendicular to the ground, and the two sides of the multiple snap-fit ​​frames 409 are attached to the sides of the driving wheel 309 and the test roller 412. Then, when the vehicle is being tested, due to insufficient installation accuracy of the coupling or excessive pressure on the coupling, there is eccentricity between the motor output shaft and the power measurement unit of the test device, and additional vibration is generated to prevent it from escaping from the pressure range given by the test roller 412, thereby avoiding displacement deviation of the test roller 412 or measurement error of the driving wheel 309 due to vibration.

[0047] In this embodiment, limited arc blocks 411 are slidably installed on the inner walls of both sides of the engaging frame 409 through sliding grooves, a pressure sensing component 406 is fixedly installed inside the sliding groove of the engaging frame 409, an airbag compression rod 408 is fixedly installed on one side of the pressure sensing component 406, and a limited arc block 411 is fixedly installed on the bottom of the airbag compression rod 408, and the limited arc block 411 is attached to the outer side of the driving wheel 309 and the test roller 412. As the engaging frame 409 approaches the outer side of the test roller 412 and the driving wheel 309, the limited arc block 411 faces the arc outer wall of the driving wheel 309 and the test roller 412. The airbag pressure of the airbag compression rod 408 is used to limit the test roller 412 in a rotating state, thereby reducing the eccentric distance of the test roller 412 or the driving wheel 309. If the eccentric distance is too large, the limiting arc block 411 slides upward along the slide groove of the locking frame 409 under the thrust of the driving wheel 309 or the test roller 412. During this process, the limiting arc block 411 squeezes the pressure sensing component 406 to generate squeezing, causing the pressure sensing component 406 to transmit pressure information to the computer, thereby reminding the staff of the bad state of the load test, further reducing the measurement error and preventing the possibility of equipment damage.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0049] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A load speed test device for a new energy vehicle, comprising a positioning pipe assembly (1), characterized in that: A motor connection component (3) is installed inside the positioning pipe component (1), an auxiliary installation component (2) is installed outside the positioning pipe component (1), and a test component (4) is attached to one side of the motor connection component (3) passing through the positioning pipe component (1); The motor connection assembly (3) comprises an end threaded sleeve (301), a connection plug block (303) is fixedly installed inside the end threaded sleeve (301), and a driving wheel (309) is installed on one side of the connection plug block (303) via a coupling assembly installed inside; The test assembly (4) comprises a base (403), a test drive (401) is fixedly mounted on the top of the base (403), a test rod (402) is mounted on one side of the test drive (401), a test roller (412) is fixedly mounted on the side of the test rod (402) away from the test drive (401), and the test roller (412) is arranged in a close contact state with the drive wheel (309), a fixing ring (407) is fixedly mounted on one side of the base (403), a limit ring (404) is slidably mounted on the outer side of the base (403), an auxiliary spring telescopic rod is fixedly mounted between the limit ring (404) and the base (403), a plurality of hinged rods (405) are hinged on the outer side of the limit ring (404), and the plurality of hinged rods (405) are arranged in a ring state with respect to the surface of the limit ring (404); A fixing ring (407) is fixedly mounted on the top of the base (403); fixed positioning blocks (410) whose number is the same as the number of hinged rods (405) are hingedly mounted on the outer side of the fixing ring (407); a side of the hinged rod (405) away from the limiting ring (404) is hingedly mounted on the outer side of the fixed positioning block (410); a snap-fit ​​frame (409) is fixedly mounted on one side of the fixed positioning block (410); and the snap-fit ​​frame (409) is slidably connected to the outer walls of the test roller (412) and the driving wheel (309).

2. The load speed test device for new energy vehicles according to claim 1, characterized in that: A limited arc block (411) is slidably mounted on the inner walls of both sides of the snap-fit ​​frame (409) via a slide groove, a pressure sensing component (406) is fixedly mounted inside the slide groove of the snap-fit ​​frame (409), an airbag compression rod (408) is fixedly mounted on one side of the pressure sensing component (406), a limited arc block (411) is fixedly mounted on the bottom of the airbag compression rod (408), and the limited arc block (411) is attached to the outer sides of the driving wheel (309) and the test roller (412).

3. The load speed test device for new energy vehicles according to claim 1, characterized in that: The positioning pipe assembly (1) comprises a positioning cylinder (101) slidably mounted on the outside of an end threaded sleeve (301); an auxiliary positioning cylinder (103) is fixedly mounted on one side of the end threaded sleeve (301) via a fixing rod; and the auxiliary positioning cylinder (103) is fixedly mounted on one side of a driving wheel (309).

4. The load speed test device for new energy vehicles according to claim 3, characterized in that: The auxiliary installation component (2) comprises a fixed transverse block (201) fixedly installed on the outside of the positioning cylinder (101), and auxiliary slide rod frames (204) and clamping slide rods (202) are slidably connected on both sides of the fixed transverse block (201) via slide rails. Fixed plates are fixedly installed on the outsides of the auxiliary slide rod frames (204) and the clamping slide rods (202), and the auxiliary slide rod frames (204) and the clamping slide rods (202) are arranged in a synchronous moving state.

5. The load speed test device for new energy vehicles according to claim 4, characterized in that: A compression airbag (203) is fixedly mounted on one side of the clamping slide bar (202); a side of the placement and positioning cylinder (101) facing the compression airbag (203) is an arc-shaped edge, and the compression airbag (203) and the arc-shaped edge of the placement and positioning cylinder (101) are arranged in a matching state.

6. The load speed test device for new energy vehicles according to claim 5, characterized in that: A first connecting rod (210) is fixedly mounted on the side of the auxiliary sliding rod frame (204) away from the clamping sliding rod (202), a semicircular sealed compression air bag (211) is fixedly mounted on one side of the first connecting rod (210), two limiting rings (212) are fixedly mounted on the outer side of the auxiliary positioning cylinder (103), and a side of the semicircular sealed compression air bag (211) away from the first connecting rod (210) is fixedly mounted on the outer side of a limiting ring (212).

7. The load speed test device for new energy vehicles according to claim 6, characterized in that: A telescopic positioning rod (206) is fixedly mounted on one side of the limiting collar (212); the telescopic end of the telescopic positioning rod (206) is fixedly mounted on the outside of the auxiliary sliding rod frame (204); an annular sleeve block (205) is fixedly mounted on the bottom of the auxiliary sliding rod frame (204); and a positioning spring (207) is fixedly mounted between the annular sleeve block (205) and the telescopic positioning rod (206).

8. The load speed test device for new energy vehicles according to claim 7, characterized in that: A gear slide bar (208) is fixedly mounted on the bottom of the annular sleeve block (205), and a gear (209) is meshingly connected to the outer side of the gear slide bar (208), and the gear (209) is arranged on the outer side of the auxiliary positioning cylinder (103).

9. The load speed test device for new energy vehicles according to claim 8, characterized in that: The telescopic positioning rod (206) passes through the annular sleeve block (205) and a limiting sleeve ring (212) on one side of which a second connecting sleeve rod (213) is fixedly mounted, and a water storage air bag (214) is fixedly mounted on one side of the second connecting sleeve rod (213).

10. The load speed test device for new energy vehicles according to claim 3, characterized in that: A plurality of locking grooves (102) are provided on the outer side of the positioning cylinder (101); a receiving groove (306) is provided on the side of the end threaded sleeve (301) facing the locking groove (102); a tilting rod (305) is hingedly connected to the outer side of the receiving groove (306); a blocking limit plate (304) adapted to the locking groove (102) is hingedly connected to one side of the tilting rod (305); a spring (307) is fixedly installed between the blocking limit plate (304) and the receiving groove (306); a transverse positioning rod (308) is fixedly installed at the bottom of the blocking limit plate (304); and a dual-purpose positioning nut (302) is provided on one side of the end threaded sleeve (301).

Images