Lubricating oil friction testing device

Abstract

The utility model discloses a lubricating oil friction testing device, which relates to the technical field of testing devices and comprises a supporting plate, a plurality of supporting legs are fixedly connected to the outer wall of the bottom of the supporting plate, and a testing mechanism is arranged on the outer wall of the supporting plate. According to the utility model, through the arrangement of the connecting rods and the second connecting rod, in the moving process of the detection device, the detection device can drive the plurality of connecting rods to move and drive the second connecting rod to rotate around the positioning seat, and because the connecting rods and the second connecting rod can only rotate transversely and cannot rotate longitudinally, the detection device is convenient to operate, and the detection device is convenient to use. Therefore, complete contact between the detection device and the surface of the storage box is guaranteed, the movement range of the detection device is limited through a connecting rod and a second connecting rod, and the situation that in friction detection, if the detection device is insufficient in stability and is prone to shaking, pressure borne by a friction head is not uniform is prevented. And the measured friction force data is not accurate.

Description

Technical Field

[0001] This utility model belongs to the technical field of testing devices, and in particular relates to a lubricating oil friction testing device. Background Technology

[0002] In modern industry and transportation, lubricating oil plays a vital role. It not only reduces friction between mechanical parts, lowers wear, and extends equipment lifespan, but also provides cooling, cleaning, and rust prevention. With continuous technological advancements, the operating conditions of mechanical equipment are becoming increasingly complex and demanding, placing higher requirements on the performance of lubricating oils.

[0003] The existing friction testing device first pours lubricating oil into a container, then uses a telescopic rod to push the testing device downwards to contact the inside of the container, and then moves the container or the testing device left and right to make the outside of the device rub against the container. The resistance generated by the friction is displayed on the display screen on the outside of the device.

[0004] After the above equipment is completed, if the stability of the testing device is insufficient during friction testing, it is easy for it to shake, which can lead to uneven pressure on the friction head and inaccurate friction force data. Therefore, we propose a lubricating oil friction testing device. Utility Model Content

[0005] The purpose of this utility model is to provide a lubricating oil friction testing device. Through the testing mechanism, auxiliary mechanism and cleaning mechanism, it solves the problem that if the testing device is not stable enough during friction testing, it is easy to shake, which can lead to uneven pressure on the friction head and inaccurate measured friction force data.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model is a lubricating oil friction testing device, including a support plate, and a number of support legs are fixedly connected to the bottom outer wall of the support plate.

[0008] The outer wall of the support plate is provided with a testing mechanism, which includes a support block. The outer wall of the support block is fixedly connected to the outer wall of the support plate. A control console is fixedly connected to the outer wall of the support block. A motor is fixedly connected to the bottom of the inner wall of the support block. The output end of the motor is fixedly connected to a connecting shaft through a coupling. A pulley is fixedly connected to the top outer wall of the connecting shaft. A belt is driven through the inner wall of the pulley. A second pulley is driven through the outer wall of the end of the belt away from the pulley.

[0009] Furthermore, the outer wall of the gear is fixedly connected to the outer wall of the second pulley, and an automatic telescopic rod is fixedly connected to the bottom outer wall of the second pulley. A detection device is rotatably connected to the outer wall of the automatic telescopic rod away from the second pulley. Several connecting rods are slidably connected to the outer wall of the detection device. A connecting rod two is rotatably connected to the outer wall of the connecting rod away from the detection device. The outer wall of the connecting rod two is rotatably connected to the inner wall of the positioning seat. The positioning seat is fixedly connected to the outer wall of the support block. An auxiliary mechanism is provided on the outer wall of the support plate.

[0010] Furthermore, the auxiliary mechanism includes a connecting plate, the outer wall of which is fixedly connected to the outer wall of the support plate, a second motor fixedly connected to the outer wall of the connecting plate, a fixed shaft fixedly connected to the output end of the second motor, the outer wall of the fixed shaft rotatably connected to the outer wall of the connecting plate, the outer wall of the fixed shaft rotatably connected to the outer wall of the storage box, and a plurality of support rods rotatably connected to the bottom outer wall of the storage box.

[0011] Furthermore, a second support rod is rotatably connected to the outer wall of one end of each of the support rods away from the storage box, and a slider is rotatably connected to the outer wall of the other end of the second support rod.

[0012] Furthermore, the inner wall of the support plate is provided with a plurality of sliding grooves, the inner wall of the sliding grooves is slidably connected to the outer wall of the slider, a damper is fixedly connected to the outer wall of the slider, and a spring is fixedly connected to the outer wall of the damper.

[0013] Furthermore, the outer wall of the storage box is provided with a cleaning mechanism, which includes a double-layer pulley. The outer wall of the double-layer pulley is fixedly connected to the outer wall of the fixed shaft. The inner wall of the double-layer pulley is drivenly connected to a plurality of second belts. The outer wall of the ends of the plurality of second belts away from the double-layer pulley is drivenly connected to a second pulley. The outer wall of the second pulley is rotatably connected to the outer wall of the storage box. A positioning rod is fixedly connected to the outer wall of the second pulley. The outer wall of the positioning rod is rotatably connected to the outer wall of the storage box.

[0014] Furthermore, a connecting block is fixedly connected to the outer wall of the end of the positioning rod away from the second pulley, a push rod is rotatably connected to the outer wall of the connecting block, a second push rod is rotatably connected to the outer wall of the end of the push rod away from the connecting block, a second connecting plate is rotatably connected to the outer wall of the other end of the push rod, the outer wall of the second connecting plate is slidably connected to the outer wall of the storage box, a plurality of positioning shafts are rotatably connected to the inner wall of the second connecting plate, scrapers are fixedly connected to the bottom outer wall of the plurality of positioning shafts, and a third connecting rod is rotatably connected to the top outer wall of the positioning shaft.

[0015] Furthermore, a gear two is fixedly connected to the outer wall of the positioning shaft, a rack two meshes with the outer wall of the gear two, the outer wall of the rack two is fixedly connected to the inner wall of the storage box, a plurality of valves are fixedly connected to the outer wall of the storage box, a liquid outlet pipe is fixedly connected to the bottom outer wall of the valve, a storage box is fixedly connected to the outer wall of the end of the liquid outlet pipe away from the valve, and the outer wall of the storage box is fixedly connected to the outer wall of the support plate.

[0016] This utility model has the following beneficial effects:

[0017] 1. This utility model, by setting up connecting rod and connecting rod two, allows the detection device to move multiple connecting rods during its movement, and also drives connecting rod two to rotate around the positioning seat. Since the connection between connecting rod and connecting rod two allows only lateral rotation and not longitudinal rotation, it ensures complete contact between the detection device and the surface of the storage box. This achieves the goal of limiting the movement range of the detection device through connecting rod and connecting rod two, preventing issues such as insufficient stability of the detection device during friction detection, which could easily lead to wobbling, misalignment of the friction head, uneven wear, and inaccurate measured friction force data.

[0018] 2. This utility model incorporates a scraper and a connecting plate three. A push rod two pushes the connecting plate two, causing it to slide against the bottom inner wall of the storage box. The connecting plate two then drives two gears two to slide along both sides of the storage box. Since racks two are fixed to both sides of the storage box and mesh with the gears two, the racks two drive the gears two to rotate, which in turn drives the connected positioning shaft to rotate. This causes the positioning shaft to rotate the scraper at the bottom, which then rotates against the inner wall of the storage box. This achieves the goal of the push rod two pushing the connecting plate three to move, allowing the scraper to remove oil stains and send them into the valve. This prevents the problem that after a lubricating oil friction test, some lubricating oil often remains on the inner wall and bottom of the testing container. If not thoroughly cleaned, this residual lubricating oil will mix with the sample in the next test, altering the sample's composition and properties, leading to inaccurate test results.

[0019] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the test structure of this utility model;

[0023] Figure 3 This is a cross-sectional view of the auxiliary structure of this utility model;

[0024] Figure 4 This is a cross-sectional view of the overall structure of this utility model;

[0025] Figure 5 This utility model Figure 4 Enlarged view of point A in the middle.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Support plate; 101. Support leg; 2. Testing mechanism; 201. Support block; 202. Control console; 203. Motor; 204. Connecting shaft; 205. Pulley; 206. Pulley II; 207. Belt; 208. Hollow plate; 209. Rack; 210. Gear; 211. Automatic telescopic rod; 212. Detection device; 213. Connecting rod; 214. Connecting rod II; 215. Positioning seat; 3. Auxiliary mechanism; 301. Connecting plate; 302. Motor II; 303. Fixed shaft; 304. Storage box; 30 5. Support rod; 306. Support rod two; 307. Slider; 308. Slide groove; 309. Spring; 310. Damper; 4. Cleaning mechanism; 401. Double-layer pulley; 402. Second belt; 403. Second pulley; 404. Positioning rod; 405. Connecting block; 406. Push rod; 407. Push rod two; 408. Connecting plate two; 409. Positioning shaft; 410. Gear two; 411. Rack two; 412. Scraper; 413. Connecting rod three; 414. Valve; 415. Liquid outlet pipe; 416. Storage box. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-5 As shown, this utility model is a lubricating oil friction testing device, including a support plate 1, and a plurality of support legs 101 are fixedly connected to the bottom outer wall of the support plate 1.

[0030] A testing mechanism 2 is provided on the outer wall of the support plate 1. The testing mechanism 2 includes a support block 201, the outer wall of which is fixedly connected to the outer wall of the support plate 1. A control console 202 is fixedly connected to the outer wall of the support block 201. A motor 203 is fixedly connected to the bottom of the inner wall of the support block 201. The control console 202 controls the motor 203 to rotate. The output end of the motor 203 is fixedly connected to a connecting shaft 204 via a coupling. A pulley 205 is fixedly connected to the top outer wall of the connecting shaft 204. The inner wall of the pulley 205 is connected to a transmission connection. A belt 207 is provided, with a second pulley 206 connected to the outer wall of the end of the belt 207 away from the pulley 205. The belt 207 drives the pulley 205 to rotate via a connecting shaft 204, causing both the belt 207 and pulley 205 to rotate simultaneously with pulley 206. A perforated plate 208 is fixedly connected to the top outer wall of the support plate 1, and a rack 209 is fixedly connected to the inner wall of the perforated plate 208. A gear 210 meshes with the outer wall of the rack 209, and the outer wall of the gear 210 is fixedly connected to the outer wall of pulley 206. The rotation of pulley 206... The gear 210 is driven to rotate, and because the gear 210 meshes with the rack 209, the rack 209 pushes the gear 210 to rotate, while the gear 210 slides along the hollow plate 208. An automatic telescopic rod 211 is fixedly connected to the bottom outer wall of the pulley 206. A detection device 212 is rotatably connected to the outer wall of the end of the automatic telescopic rod 211 away from the pulley 206. The movement of the pulley 206 drives the automatic telescopic rod 211 to move, and the automatic telescopic rod 211 pushes the detection device 212 so that it is in contact with the storage box 304. The surface of the detection device 212 is in contact with several connecting rods 213 that are slidably connected to the outer wall of the detection device 212. The outer wall of the connecting rod 213 away from the detection device 212 is rotatably connected to the second connecting rod 214. The outer wall of the second connecting rod 214 is rotatably connected to the inner wall of the positioning seat 215. The movement of the detection device 212 pushes the second connecting rod 214, and the second connecting rod 214 pushes the connecting rod 213 to rotate around the positioning seat 215. The positioning seat 215 is fixedly connected to the outer wall of the support block 201. The outer wall of the support plate 1 is provided with an auxiliary mechanism 3.

[0031] Auxiliary mechanism 3 includes a connecting plate 301, the outer wall of which is fixedly connected to the outer wall of support plate 1. A second motor 302 is fixedly connected to the outer wall of connecting plate 301. The output end of the second motor 302 is fixedly connected to a fixed shaft 303. The outer wall of the fixed shaft 303 is rotatably connected to the outer wall of connecting plate 301. The outer wall of the fixed shaft 303 is rotatably connected to the outer wall of storage box 304. Several support rods 305 are rotatably connected to the bottom outer wall of storage box 304. Support rod 306 is rotatably connected to the outer wall of one end of each support rod 305 away from storage box 304. A sliding mechanism is rotatably connected to the outer wall of the other end of support rod 306. Block 307, the inner wall of the support plate 1 is provided with several sliding grooves 308. When the storage box 304 is flipped to one side, the support rod 305 is pushed to move, and the second support rod 306 is driven to rotate. The second support rod 306 pushes the slider 307 and slides along the sliding grooves 308. The inner wall of the sliding groove 308 is slidably connected to the outer wall of the slider 307. A damper 310 is fixedly connected to the outer wall of the slider 307. A spring 309 is fixedly connected to the outer wall of the damper 310. The movement of the slider 307 pulls the spring 309, and the elasticity of the spring 309 organizes the movement of the slider 307, thereby increasing the support of the support rod 305 for the storage box 304.

[0032] The outer wall of the storage box 304 is provided with a cleaning mechanism 4. The cleaning mechanism 4 includes a double-layer pulley 401. The outer wall of the double-layer pulley 401 is fixedly connected to the outer wall of the fixed shaft 303. Several second belts 402 are drivenly connected to the inner wall of the double-layer pulley 401. The outer wall of one end of the several second belts 402 away from the double-layer pulley 401 is drivenly connected to a second pulley 403. The outer wall of the second pulley 403 is rotatably connected to the outer wall of the storage box 304. The rotation of the fixed shaft 303 drives the double-layer pulley 401 to rotate, which in turn drives the multiple second pulleys 403 to rotate, and the second belts 402 drive the second pulleys 403 at the other end. The pulley 403 rotates, and a positioning rod 404 is fixedly connected to the outer wall of the second pulley 403. The outer wall of the positioning rod 404 is rotatably connected to the outer wall of the storage box 304. A connecting block 405 is fixedly connected to the outer wall of the end of the positioning rod 404 away from the second pulley 403. A push rod 406 is rotatably connected to the outer wall of the connecting block 405. The rotation of the positioning rod 404 drives the connecting block 405 to move, and the connecting block 405 drives the push rod 406 to move. A second push rod 407 is rotatably connected to the outer wall of the end of the push rod 406 away from the connecting block 405. A second connecting plate 408 is rotatably connected to the outer wall of the other end of the push rod 407. The outer wall of the second connecting plate 408 is connected to the outer wall of the storage box 304. The outer wall of the storage box 304 is slidably connected. Push rod 406 pushes push rod 407 to slide along the inner wall of the storage box 304, causing the second pulley 403 to push connecting plate 408 to slide against the outer wall of the storage box 304. Several positioning shafts 409 are rotatably connected to the inner wall of connecting plate 408. Scrapers 412 are fixedly connected to the bottom outer wall of the positioning shafts 409. Connecting rod 413 is rotatably connected to the top outer wall of the positioning shafts 409. Gear 410 is fixedly connected to the outer wall of the positioning shafts 409. A rack 411 meshes with the outer wall of gear 410. The outer wall of rack 411 is fixedly connected to the inner wall of the storage box 304. Through the gear... Gear 410 meshes with rack 411, causing gear 410 to rotate and drive positioning shaft 409 to rotate. This, in turn, causes positioning shaft 409 to drive scraper 412 to rotate. Several valves 414 are fixedly connected to the outer wall of storage box 304. A liquid outlet pipe 415 is fixedly connected to the bottom outer wall of each valve 414. A storage box 416 is fixedly connected to the outer wall of the end of the liquid outlet pipe 415 away from the valve 414. By rotating the valve 414, scraper 412 pushes liquid through the valve 414 and into storage box 416 through the liquid outlet pipe 415. The outer wall of storage box 416 is fixedly connected to the outer wall of support plate 1.

[0033] One specific application of this embodiment is:

[0034] When the equipment is needed, lubricating oil is poured into the storage box 304. During the pouring process, the oil pushes against one side of the storage box 304, causing it to rotate at a certain angle and press down on the support rod 305. This causes the support rod 305 to push the second support rod 306 to move. The other end of the support rod 305 contacts the connecting plate 301, allowing it to rotate around the connecting plate 301, thus pushing the second support rod 306. The second support rod 306 then drives the slider 307 to slide along the groove 308. The groove 308 pulls the spring 309, increasing the resistance to the slider 307's movement. This allows the second support rod 306 to better support the support rod 305, preventing the storage box 304 from rotating. If the amplitude of movement is too large, and damper 310 prevents spring 309 from bending, then motor 302 is started to drive fixed shaft 303 to rotate. The rotation of fixed shaft 303 drives double-layer pulley 401 to rotate. Double-layer pulley 401 and second pulley 403 are connected by second belt 402, and the second belt 402 drives double-layer pulley 401 and second pulley 403 to rotate simultaneously. The second pulley 403 drives positioning rod 404 to rotate around storage box 304. Positioning rod 404 drives connecting block 405 to move and push rod 406 to rotate. Since connecting block 405 and positioning rod 404 are not on the same straight line, the rotation area of ​​connecting block 405 is larger than that of positioning rod 404, thus allowing connecting block 405 to rotate. 5. Push rod 406 moves, causing push rod 406 to push push rod 407 to slide along the inside of support plate 1. Push rod 407 pushes connecting plate 408 to slide against the bottom of the inner wall of storage box 304. Connecting plate 408 drives two gears 410 to slide along both sides of storage box 304. Since racks 411 are fixed on both sides of storage box 304 and mesh with gears 410, racks 411 drive gears 410 to rotate, which in turn drives the connected positioning shaft 409 to rotate. This causes the positioning shaft 409 to drive the scraper 412 at the bottom to rotate against the inner wall of storage box 304, thus evenly distributing the liquid in storage box 304. This is achieved through connecting rod 413 and multiple positioning shafts. The outer side of 409 is connected, allowing the connecting rod 413 to drive multiple positioning shafts 409 to rotate. The liquid pushed by the scraper 412 then flows to both sides. However, because the valve 414 is not open, the liquid cannot flow out. Then, the motor 203 is started via the control console 202, causing the connecting shaft 204 to rotate. Simultaneously, the pulley 205 rotates, and the belt 207 connects pulley 205 and pulley 206, causing them to rotate simultaneously. The rotation of pulley 206 drives gear 210, which is constrained by the perforated plate 208. The perforated plate 208 contains a rack 209, which meshes with gear 210.This causes the rack 209 to drive the gear 210 to rotate, which in turn moves the gear 210, causing the gear 210 to move the pulley 206. Since the perforated plate 208 is arc-shaped and the distance between it and the pulley 205 is equal to the length of the belt 207, the belt 207 remains connected to the pulley 205 during the movement of the pulley 206. The movement of the pulley 206 moves the automatic telescopic rod 211 at the bottom, and the automatic extension of the telescopic rod 211 pushes the detection device 212, causing it to contact the interior of the storage box 304. The detection device 212 slides on the surface of the storage box 304, thus performing the detection. During the movement of device 212, the detection device 212 will drive multiple connecting rods 213 to move, and 213 will drive connecting rod 214 to rotate around the positioning seat 215. Since the connection between connecting rod 213 and connecting rod 214 allows only lateral rotation and not longitudinal rotation, this ensures complete contact between the detection device 212 and the surface of the storage box 304, avoiding incomplete detection results. The detection results will be displayed on the control panel 202. After the detection is complete, valve 414 can be opened to allow liquid to flow out through valve 414 and into the storage box 416 via the outlet pipe 415. Then, motor 302 can be restarted to repeat the operation, allowing scraper 412 to push the liquid into valve 414.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A lubricating oil friction testing device, comprising a support plate (1), characterized in that: The bottom outer wall of the support plate (1) is fixedly connected with several support legs (101); The outer wall of the support plate (1) is provided with a testing mechanism (2), the testing mechanism (2) includes a support block (201), the outer wall of the support block (201) is fixedly connected to the outer wall of the support plate (1), a control console (202) is fixedly connected to the outer wall of the support block (201), a motor (203) is fixedly connected to the bottom of the inner wall of the support block (201), and the output end of the motor (203) is fixedly connected to a connecting shaft (204) through a coupling. A pulley (205) is fixedly connected to the top outer wall of the support plate (1). A belt (207) is driven to the inner wall of the pulley (205). A second pulley (206) is driven to the outer wall of the belt (207) away from the pulley (205). A hollow plate (208) is fixedly connected to the top outer wall of the support plate (1). A rack (209) is fixedly connected to the inner wall of the hollow plate (208). A gear (210) meshes with the outer wall of the rack (209).

2. The lubricating oil friction testing device according to claim 1, characterized in that, The outer wall of the gear (210) is fixedly connected to the outer wall of the pulley (206). An automatic telescopic rod (211) is fixedly connected to the bottom outer wall of the pulley (206). A detection device (212) is rotatably connected to the outer wall of the automatic telescopic rod (211) away from the pulley (206). Several connecting rods (213) are slidably connected to the outer wall of the detection device (212). A connecting rod (214) is rotatably connected to the outer wall of the connecting rod (213) away from the detection device (212). The outer wall of the connecting rod (214) is rotatably connected to the inner wall of the positioning seat (215). The positioning seat (215) is fixedly connected to the outer wall of the support block (201). An auxiliary mechanism (3) is provided on the outer wall of the support plate (1).

3. The lubricating oil friction testing device according to claim 2, characterized in that, The auxiliary mechanism (3) includes a connecting plate (301), the outer wall of the connecting plate (301) is fixedly connected to the outer wall of the support plate (1), a second motor (302) is fixedly connected to the outer wall of the connecting plate (301), a fixed shaft (303) is fixedly connected to the output end of the second motor (302), the outer wall of the fixed shaft (303) is rotatably connected to the outer wall of the connecting plate (301), the outer wall of the fixed shaft (303) is rotatably connected to the outer wall of the storage box (304), and a plurality of support rods (305) are rotatably connected to the bottom outer wall of the storage box (304).

4. The lubricating oil friction testing device according to claim 3, characterized in that, A second support rod (306) is rotatably connected to the outer wall of one end of each of the support rods (305) away from the storage box (304), and a slider (307) is rotatably connected to the outer wall of the other end of the second support rod (306).

5. The lubricating oil friction testing device according to claim 4, characterized in that, The inner wall of the support plate (1) is provided with a plurality of sliding grooves (308). The inner wall of the sliding grooves (308) is slidably connected to the outer wall of the slider (307). The outer wall of the slider (307) is fixedly connected to a damper (310), and the outer wall of the damper (310) is fixedly connected to a spring (309).

6. The lubricating oil friction testing device according to claim 5, characterized in that, The outer wall of the storage box (304) is provided with a cleaning mechanism (4). The cleaning mechanism (4) includes a double-layer pulley (401). The outer wall of the double-layer pulley (401) is fixedly connected to the outer wall of the fixed shaft (303). The inner wall of the double-layer pulley (401) is drivenly connected to a plurality of second belts (402). The outer wall of the plurality of second belts (402) away from the double-layer pulley (401) is drivenly connected to a second pulley (403). The outer wall of the second pulley (403) is rotatably connected to the outer wall of the storage box (304). The outer wall of the second pulley (403) is fixedly connected to a positioning rod (404). The outer wall of the positioning rod (404) is rotatably connected to the outer wall of the storage box (304).

7. The lubricating oil friction testing device according to claim 6, characterized in that, A connecting block (405) is fixedly connected to the outer wall of the end of the positioning rod (404) away from the second pulley (403). A push rod (406) is rotatably connected to the outer wall of the connecting block (405). A second push rod (407) is rotatably connected to the outer wall of the end of the push rod (406) away from the connecting block (405). A second connecting plate (408) is rotatably connected to the outer wall of the other end of the push rod (407). The outer wall of the second connecting plate (408) is slidably connected to the outer wall of the storage box (304). A plurality of positioning shafts (409) are rotatably connected to the inner wall of the second connecting plate (408). A scraper (412) is fixedly connected to the bottom outer wall of the plurality of positioning shafts (409). A third connecting rod (413) is rotatably connected to the top outer wall of the positioning shafts (409).

8. The lubricating oil friction testing device according to claim 7, characterized in that, A gear 2 (410) is fixedly connected to the outer wall of the positioning shaft (409). A rack 2 (411) meshes with the outer wall of the gear 2 (410). The outer wall of the rack 2 (411) is fixedly connected to the inner wall of the storage box (304). A plurality of valves (414) are fixedly connected to the outer wall of the storage box (304). A liquid outlet pipe (415) is fixedly connected to the bottom outer wall of the valve (414). A storage box (416) is fixedly connected to the outer wall of the end of the liquid outlet pipe (415) away from the valve (414). The outer wall of the storage box (416) is fixedly connected to the outer wall of the support plate (1).

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