high pressure oil pipe wear testing machine

Abstract

The utility model discloses a high pressure oil pipe wear testing machine, including testing machine main part, rubber pipe fixed component, polishing subassembly and drive assembly, rubber pipe fixed component is including rubber pipe fixed spare, polishing subassembly is located the top of rubber pipe fixed component, polishing subassembly at least includes slider assembly, mobile seat, connecting rod, weight and polishing block, the output of drive assembly is connected to one end of rubber pipe fixed component, makes drive assembly control rubber pipe fixed spare rotation, the other output of drive assembly is connected to mobile seat, makes drive assembly control mobile seat along the extension direction of slider assembly and moves, to make polishing block and rubber pipe fixed spare resist and along the extension direction of rubber pipe fixed spare to and fro movement, thus, drive mobile seat and drive polishing block along the accurate reciprocating linear motion of oil pipe length direction, realize the oil pipe on rubber pipe fixed component and carry out friction movement to guarantee the laboratory simulation of oil pipe high efficiency, accurate, reliable.

Description

Technical Field

[0001] This utility model relates to the field of pipe wear resistance testing machines, and in particular to a high-pressure oil pipe wear resistance testing machine. Background Technology

[0002] One important aspect of high-pressure oil pipe testing is wear resistance testing. The wear resistance of high-pressure oil pipes directly affects their service life and operational safety. To ensure the quality of rubber hoses, it is necessary to test the wear resistance of the outer coating of the rubber hose.

[0003] In existing technologies, wear resistance testing of high-pressure oil pipes is usually achieved by simulating the friction environment under actual working conditions using a wear testing machine. However, most existing wear testing machines adopt a single motion form of unidirectional linear friction (such as the friction wheel making reciprocating linear motion along the hose axis) or fixed angle friction (such as the oil pipe being stationary and the friction wheel rubbing unidirectionally with a fixed pressure and angle). Under a single motion form, the stress distribution generated by friction is uniform (such as linear friction only transmitting stress along the axial direction). However, in actual complex motion, the oil pipe surface is subjected to the superposition of alternating shear stress, contact fatigue stress, and particle impact stress, which can easily lead to multiple failure modes such as fatigue wear, abrasive wear, and adhesive wear. The single friction motion form makes traditional wear testing machines unable to truly simulate the wear behavior of high-pressure oil pipes under complex working conditions, which in turn leads to problems such as distorted test results, deviations in life prediction, and prominent safety hazards.

[0004] Therefore, a new technical solution needs to be researched to address the above problems. Utility Model Content

[0005] In view of this, the present invention addresses the deficiencies of the existing technology, and its main objective is to provide a high-pressure oil pipe wear resistance testing machine. Through the structural design and coordination between the hose fixing component, the grinding component, and the drive component, one output end of the drive component is connected to one end of the hose fixing component, allowing the drive component to control the rotation of the hose fixing component to simulate the rotation or micro-motion of the oil pipe itself. Simultaneously, the other output end of the drive component is connected to the movable seat, allowing the drive component to control the movable seat to move along the extension direction of the slider component. Thus, the drive movable seat drives the grinding block to perform precise reciprocating linear motion along the length of the oil pipe, achieving frictional motion on the oil pipe on the hose fixing component, thereby ensuring efficient, accurate, and reliable laboratory simulation of the oil pipe.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-pressure oil pipe abrasion resistance testing machine includes a testing machine body, a hose fixing assembly for fixing the high-pressure oil pipe, a grinding assembly for rubbing the hose, and a drive assembly for driving the hose fixing assembly to rotate and the grinding assembly to move; the drive assembly is disposed on the testing machine body.

[0008] The main body of the testing machine is provided with a placement cavity and a guide groove communicating with the placement cavity. The guide groove extends along the length direction of the main body of the testing machine. The hose fixing assembly is disposed in the placement groove. The hose fixing assembly includes at least a hose fixing member for holding the hose. The hose fixing member extends along the length direction of the main body of the testing machine.

[0009] At least a portion of the grinding assembly is disposed within the placement cavity and located above the hose fixing assembly; the grinding assembly includes at least a slider assembly, a movable seat disposed on the slider assembly, an adjustable connecting rod disposed on the movable seat, a weight disposed on the upper end of the connecting rod, and a grinding block disposed below the connecting rod; the slider assembly extends along the length direction of the main body of the testing machine and is located beside the hose fixing assembly.

[0010] One output end of the drive component is connected to one end of the hose fixing component, so that the drive component controls the hose fixing component to rotate. The other output end of the drive component is connected to the movable seat, so that the drive component controls the movable seat to move along the extension direction of the slider component, so that the grinding block abuts against the hose fixing component and moves back and forth along the extension direction of the hose fixing component.

[0011] As a preferred embodiment, the drive assembly includes a drive device, a commutator, a drive rod, and a synchronous pulley. The circulator has an input shaft, a first output shaft, and a second output shaft. The synchronous pulley is connected to the input shaft. The output end of the drive device is equipped with a pulley, which is driven by the synchronous pulley. The first output shaft of the commutator is connected to the hose fixing component, and the second output shaft of the commutator is connected to a turntable. The turntable has a connecting part. One end of the drive rod is connected to the connecting part, and the other end of the drive rod is connected to the movable seat to drive the movable seat to move along the extension direction of the slider assembly. The commutator distributes the power of the drive device to the hose fixing component (rotation) and the movable seat (linear motion). Only one motor is needed to achieve compound motion, reducing equipment cost and energy consumption. The combination of the turntable and the drive rod converts the rotational motion into the reciprocating linear motion of the movable seat. Finally, the transmission between the synchronous pulley and the pulley ensures a stable ratio between the hose rotation speed and the grinding block sliding speed, improving test repeatability and data comparability.

[0012] As a preferred embodiment, the hose fixing assembly further includes a hose clamping seat and a hose pressing block for clamping the hose in conjunction with the hose fixing component. The hose pressing block is detachably mounted on the hose fixing component and includes a left pressing block and a right pressing block. The first output shaft of the commutator is connected to the left end of the hose fixing component via a main shaft, and one end of the right pressing block is detachably mounted on the hose clamping seat.

[0013] The hose clamping block and the hose fixing component work together to achieve a ring-shaped clamping of the oil pipe, preventing the oil pipe from slipping or shifting during testing. The right clamping block can be detachably installed on the hose clamping seat, facilitating quick replacement of oil pipes of different specifications. Finally, the spindle connection commutator and the hose fixing component ensure that the rotation center coincides with the oil pipe axis, reducing testing errors caused by eccentricity.

[0014] As a preferred embodiment, the hose clamping seat includes a fixed frame, a locking block hinged to the fixed frame, and a clamping rod slidably disposed on the fixed frame. The end of the clamping rod near the locking block is hinged to the locking block. The hinged design of the fixed frame, the locking block, and the clamping rod allows for quick clamping / unclamping of the hose through simple manual operation.

[0015] As a preferred embodiment, the slider assembly includes a guide rail extending in the left-right direction and a slider that can slide along the extension direction of the guide rail. The movable seat is mounted on the slider to ensure the straightness of the grinding block moving along the oil pipe axis and avoid excessive local wear caused by deviation of the movement trajectory.

[0016] As a preferred embodiment, the rear end of the movable seat is provided with a mating part, and the other end of the drive rod is connected to the mating part.

[0017] As a preferred embodiment, the front end of the movable seat is provided with a vertical mounting block, which has a vertical groove and a locking hole. The vertical groove extends along the vertical direction of the vertical mounting block. The connecting rod is provided with a plurality of locking holes at intervals. The connecting rod can be adjusted vertically and is set in the vertical groove and locked to the vertical mounting block by a locking structure. The design of the vertical groove and the locking hole supports the vertical adjustment of the connecting rod to adapt to the testing requirements of oil pipes of different diameters, ensuring that the grinding block always maintains vertical contact with the surface of the oil pipe.

[0018] As a preferred embodiment, the locking structure includes a locking plate and a pin. The pin can be selectively disposed on a corresponding locking hole to adjust the contact of the grinding block with or away from the hose fixing component. Furthermore, the locking plate and the pin enable quick positioning and quick locking.

[0019] As a preferred embodiment, the grinding block is covered with sandpaper.

[0020] As a preferred embodiment, the driving device is an electric motor.

[0021] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution, it mainly achieves this through the structural design and cooperation between the hose fixing component, the grinding component and the drive component. One output end of the drive component is connected to one end of the hose fixing component, so that the drive component controls the rotation of the hose fixing component to simulate the rotation or micro-motion of the oil pipe itself. At the same time, the other output end of the drive component is connected to the moving seat, so that the drive component controls the moving seat to move along the extension direction of the slider component. In this way, the drive moving seat drives the grinding block to make precise reciprocating linear motion along the length of the oil pipe, so as to realize the frictional motion of the oil pipe on the hose fixing component, thereby ensuring efficient, accurate and reliable laboratory simulation of the oil pipe.

[0022] Secondly, weights are set on the connecting rod. By increasing or decreasing the number of weights or replacing them with different weights, the contact pressure of the grinding block on the oil pipe can be flexibly adjusted. At the same time, the connecting rod is adjustable and mounted on the moving base, which supports fine adjustment of the height and angle of the pressure application point to meet the wear resistance test requirements of oil pipes of different materials and specifications, and improve the versatility of the test.

[0023] Furthermore, the design of the guide groove and slider assembly ensures that the moving seat and the grinding block on it can make stable, low-vibration linear reciprocating motion along the length direction of the main body of the testing machine (i.e., the oil pipe axis), and the friction trajectory is precise and controllable.

[0024] To more clearly illustrate the structural features and effects of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0025] Figure 1 This is a first perspective view of an embodiment of the present utility model;

[0026] Figure 2 This is a second perspective view of an embodiment of the present utility model;

[0027] Figure 3 This is a third perspective view of an embodiment of the present utility model (grinding block contacting rubber tube fixing component);

[0028] Figure 4 This is a fourth perspective view of an embodiment of the present utility model;

[0029] Figure 5 This is an exploded view of the hose fixing assembly according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached diagram:

[0031] 1. Testing machine body 11. Placement cavity

[0032] 12. Guide groove

[0033] 2. Hose fixing assembly 21. Hose fixing component

[0034] 22. Hose clamping seat 23. Hose pressing block

[0035] 231. Left clamping block; 232. Right clamping block

[0036] 221. Fixing bracket 222. Locking block

[0037] 223. Clamping rod

[0038] 3. Grinding component 31, slider component

[0039] 32. Movable seat; 33. Connecting rod

[0040] 34. Weights 35. Grinding block

[0041] 36. Locking structure

[0042] 311, Guide rail; 312, Slider

[0043] 321. Fitting part; 322. Vertical mounting block

[0044] 323. Vertical groove; 324. Locking hole

[0045] 331. Locking hole

[0046] 361. Locking plate 362. Bolt

[0047] 4. Drive components 41. Drive device

[0048] 42. Commutator 43. Drive lever

[0049] 421. Input axis

[0050] 422, First output shaft; 423, Second output shaft

[0051] 424. Synchronous pulley; 425. Turntable

[0052] 426. Connecting part; 411. Pulley

[0053] 5. Main control unit. Detailed Implementation

[0054] Please refer to Figures 1 to 5 As shown, it illustrates the specific structure of an embodiment of the present invention.

[0055] In the description of this utility model, it should be noted that the directional terms such as "up", "down", "front", "back", "left", and "right" indicate the orientation and positional relationship based on the accompanying drawings or the orientation or positional relationship shown when wearing and using the device normally. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0056] A high-pressure oil pipe wear resistance testing machine includes a testing machine body 1, a hose fixing assembly 2, a grinding assembly 3, and a drive assembly 4.

[0057] The hose fixing assembly 2 is used to fix the high-pressure oil pipe, the grinding assembly 3 is used to rub the hose, and the driving assembly 4 is used to drive the grinding assembly 3 to rotate and move. The driving assembly 4 is set on the main body 1 of the testing machine. The main body 1 of the testing machine is also equipped with a main control unit 5, which is electrically connected to the driving assembly 4.

[0058] The main body 1 of the testing machine is provided with a placement cavity 11 and a guide groove 12 communicating with the placement cavity 11. The guide groove 12 extends along the length direction of the main body 1 of the testing machine, and the hose fixing assembly 2 is disposed in the placement groove.

[0059] The hose fixing assembly 2 includes at least a hose fixing member 21 for holding the hose; the hose fixing member 21 extends along the length of the main body of the testing machine.

[0060] Preferably, the hose fixing assembly 2 further includes a hose clamping seat 22 and a hose pressing block 23 for clamping the hose in conjunction with the hose fixing member 21. The hose pressing block 23 is detachably mounted on the hose fixing member 21 and includes a left pressing block 231 and a right pressing block 232. The first output shaft 422 of the commutator 42 is connected to the left end of the hose fixing member 21 via a main shaft. One end of the right pressing block 232 is detachably mounted on the hose clamping seat 22.

[0061] The hose clamping block 23 cooperates with the hose fixing part 21 to achieve a ring-shaped clamping of the oil pipe, preventing the oil pipe from slipping or shifting during the test. The right clamping block 232 is detachably installed on the hose clamping seat 22, which facilitates quick replacement of oil pipes of different specifications. Finally, the spindle connection commutator 42 and the hose fixing part 21 ensure that the rotation center coincides with the axis of the oil pipe, reducing test errors caused by eccentricity.

[0062] Preferably, the hose clamping seat 22 includes a fixing frame 221, a locking block 222 hinged to the fixing frame 221, and a clamping rod 223 slidably disposed on the fixing frame 221. The end of the clamping rod 223 near the locking block 222 is hinged to the locking block 222. The hinged design of the fixing frame 221, the locking block 222 and the clamping rod 223 allows for quick clamping / unclamping of the hose through simple manual operation.

[0063] At least a portion of the grinding assembly 3 is disposed within the placement cavity 11 and located above the hose fixing assembly 2; the grinding assembly 3 includes at least a slider assembly 31, a movable seat 32 disposed on the slider assembly 31, an adjustable connecting rod 33 disposed on the movable seat 32, a weight 34 disposed on the upper end of the connecting rod 33, and a grinding block 35 disposed below the connecting rod 33; the sliding assembly extends along the length direction of the main body 1 of the testing machine and is located beside the hose fixing assembly 2.

[0064] Preferably, the slider assembly 31 includes a guide rail 311 extending in the left-right direction and a slider 312 that can slide along the extension direction of the guide rail 311. The movable seat 32 is mounted on the slider 312 to ensure the straightness of the grinding block 35 moving along the oil pipe axial direction and avoid excessive local wear caused by deviation of the movement trajectory. Preferably, the rear end of the movable seat 32 is provided with a mating part 321, and the other end of the drive rod 43 is connected to the mating part 321.

[0065] Preferably, the front end of the movable seat 32 is provided with a vertical mounting block 322. The vertical mounting block 322 is provided with a vertical groove 323 and a locking hole 324. The vertical groove 323 extends along the vertical direction of the vertical mounting block 322. The connecting rod 33 is provided with a plurality of locking holes 331 at intervals. The connecting rod 33 is adjustable in the vertical groove 323 and locked to the vertical mounting block 322 by the locking structure 36. The design of the vertical groove 323 and the locking holes 331 supports the vertical adjustment of the connecting rod 33 to adapt to the testing requirements of oil pipes of different diameters, ensuring that the grinding block 35 always maintains vertical contact with the surface of the oil pipe.

[0066] Preferably, the locking structure 36 includes a locking plate 361 and a pin 362. The pin 362 can be selectively disposed on a corresponding locking hole 331 to adjust the grinding block 35 to contact or move away from the hose fixing member 21. Furthermore, the locking plate 361 and the pin 362 achieve rapid positioning and locking. Preferably, the grinding block 35 is covered with sandpaper.

[0067] One output end of the drive component 4 is connected to one end of the hose fixing component 2, so that the drive component 4 controls the hose fixing component 21 to rotate. The other output end of the drive component 4 is connected to the movable seat 32, so that the drive component 4 controls the movable seat 32 to move along the extension direction of the slider component 31, so that the grinding block 35 abuts against the hose fixing component 21 and moves back and forth along the extension direction of the hose fixing component 21.

[0068] Preferably, the drive assembly 4 includes a drive device 41, a commutator 42, a drive rod 43, and a synchronous pulley 424. The circulator has an input shaft 421, a first output shaft 422, and a second output shaft 423. The synchronous pulley 424 is connected to the input shaft 421. A pulley 411 is provided at the output end of the drive device 41, and the pulley 411 is driven to the synchronous pulley 424 via a belt or synchronous belt (not shown). The first output shaft 422 of the commutator 42 is connected to the hose fixing member 21. The second output shaft 423 of the commutator 42 is connected to a turntable 425, and a connecting part 426 is provided on the turntable 425. One end of the drive rod 43 is connected to the connecting part 426, and the other end of the drive rod 43 is connected to the movable seat 32, so as to drive the movable seat 32 to move along the extension direction of the slider assembly 31. The power of the drive device 41 is distributed to the hose fixing part 21 (rotation) and the movable seat 32 (linear motion) by the commutator 42. Only one motor is needed to realize the compound motion, reducing equipment cost and energy consumption. The combination of the turntable 425 and the drive rod 43 converts the rotational motion into the reciprocating linear motion of the movable seat 32. Finally, the transmission of the synchronous pulley 424 and the belt pulley 411 ensures that the ratio of the hose rotation speed to the sliding speed of the grinding block 35 is stable, improving the test repeatability and data comparability. Preferably, the drive device 41 is a motor.

[0069] The working process of this embodiment is described in detail below:

[0070] Preparation: First, loosen the oil pipe by manually operating the locking block 222. Then, remove the right clamping block 232. Next, put the oil pipe to be tested onto the hose fixing part 21. Then, adjust the position of the connecting rod 33 according to the thickness of the oil pipe on the hose fixing part 21 so that the grinding block 35 contacts the oil pipe on the hose fixing part 21. Then, operate the locking block 222 to clamp the oil pipe.

[0071] Testing work:

[0072] The main control unit 5 controls the movement of the drive device 41. The driving force of the drive device 41 drives the synchronous pulley 424 to rotate through the belt pulley 411, so as to transmit the power of the drive device 41 to the commutator 42. Then the commutator 42 distributes the power of the drive device 41 to the hose fixing member 21 (rotation) and the moving seat 32 (linear movement). The rotational motion is converted into the reciprocating linear motion of the moving seat 32 by the combination of the turntable 425 and the drive rod 43, so as to realize the testing of the oil pipe on the hose fixing member 21.

[0073] The key design feature of this invention lies in the structural design and coordination between the hose fixing component, the grinding component, and the drive component. One output end of the drive component is connected to one end of the hose fixing component, allowing the drive component to control the rotation of the hose fixing component to simulate the rotation or micro-motion of the oil pipe itself. At the same time, the other output end of the drive component is connected to the movable seat, allowing the drive component to control the movable seat to move along the extension direction of the slider component. In this way, the drive movable seat drives the grinding block to make precise reciprocating linear motion along the length of the oil pipe, so as to realize the frictional motion of the oil pipe on the hose fixing component, thereby ensuring efficient, accurate, and reliable laboratory simulation of the oil pipe.

[0074] Secondly, weights are set on the connecting rod. By increasing or decreasing the number of weights or replacing them with different weights, the contact pressure of the grinding block on the oil pipe can be flexibly adjusted. At the same time, the connecting rod is adjustable and mounted on the moving base, which supports fine adjustment of the height and angle of the pressure application point to meet the wear resistance test requirements of oil pipes of different materials and specifications, and improve the versatility of the test.

[0075] Furthermore, the design of the guide groove and slider assembly ensures that the moving seat and the grinding block on it can make stable, low-vibration linear reciprocating motion along the length direction of the main body of the testing machine (i.e., the oil pipe axis), and the friction trajectory is precise and controllable.

[0076] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A high pressure oil pipe wear tester characterized by: It includes a testing machine body, a hose fixing assembly for fixing a high-pressure oil pipe, a grinding assembly for rubbing the hose, and a drive assembly for driving the hose fixing assembly to rotate and the grinding assembly to move; the drive assembly is disposed on the testing machine body. The main body of the testing machine is provided with a placement cavity and a guide groove communicating with the placement cavity. The guide groove extends along the length direction of the main body of the testing machine. The hose fixing assembly is disposed in the placement groove. The hose fixing assembly includes at least a hose fixing member for holding the hose. The hose fixing member extends along the length direction of the main body of the testing machine. At least a portion of the grinding assembly is disposed within the placement cavity and located above the hose fixing assembly; the grinding assembly includes at least a slider assembly, a movable seat disposed on the slider assembly, an adjustable connecting rod disposed on the movable seat, a weight disposed on the upper end of the connecting rod, and a grinding block disposed below the connecting rod; the slider assembly extends along the length direction of the main body of the testing machine and is located beside the hose fixing assembly. One output end of the drive component is connected to one end of the hose fixing component, so that the drive component controls the hose fixing component to rotate. The other output end of the drive component is connected to the movable seat, so that the drive component controls the movable seat to move along the extension direction of the slider component, so that the grinding block abuts against the hose fixing component and moves back and forth along the extension direction of the hose fixing component.

2. The high-pressure oil pipe wear resistance testing machine according to claim 1, characterized in that: The drive assembly includes a drive device, a commutator, a drive rod, and a synchronous pulley. The commutator has an input shaft, a first output shaft, and a second output shaft. The synchronous pulley is connected to the input shaft. The output end of the drive device is provided with a pulley, which is driven by the synchronous pulley. The first output shaft of the commutator is connected to a hose fixing component. The second output shaft end of the commutator is connected to a turntable, which has a connecting part. One end of the drive rod is connected to the connecting part, and the other end of the drive rod is connected to a movable seat to drive the movable seat to move along the extension direction of the slider assembly.

3. The high-pressure oil pipe wear resistance testing machine according to claim 2, characterized in that: The hose fixing assembly also includes a hose clamping seat for clamping the hose in conjunction with the hose fixing component. A hose clamping block is detachably mounted on a hose fixing component. The hose clamping block includes a left clamping block and a right clamping block. The first output shaft of the commutator is connected to the left end of the hose fixing component via a main shaft. One end of the right clamping block is detachably mounted on a hose clamping seat.

4. The high-pressure oil pipe wear resistance testing machine according to claim 3, characterized in that: The hose clamping seat includes a fixed frame, a locking block hinged to the fixed frame, and a clamping rod slidably disposed on the fixed frame. The end of the clamping rod near the locking block is hinged to the locking block.

5. The high-pressure oil pipe wear resistance testing machine according to claim 1, characterized in that: The slider assembly includes a guide rail extending in the left-right direction and a slider that can slide along the extension direction of the guide rail, and the movable seat is mounted on the slider.

6. The high-pressure oil pipe wear resistance testing machine according to claim 2, characterized in that: The rear end of the movable seat is provided with a mating part, and the other end of the drive rod is connected to the mating part.

7. The high-pressure oil pipe wear resistance testing machine according to claim 5, characterized in that: The front end of the movable base is provided with a vertical mounting block, which is provided with a vertical groove and a locking hole. The vertical groove extends along the vertical direction of the vertical mounting block. The connecting rod is provided with a number of locking holes at intervals. The connecting rod can be adjusted vertically and is set in the vertical groove and locked to the vertical mounting block by a locking structure.

8. The high-pressure oil pipe wear resistance testing machine according to claim 7, characterized in that: The locking structure includes a locking plate and a pin, which can be selectively disposed on a corresponding locking hole to adjust the contact or distance of the grinding block from the hose fixing component.

9. The high-pressure oil pipe wear resistance testing machine according to claim 1, characterized in that: The grinding block is covered with sandpaper.

10. The high-pressure oil pipe wear resistance testing machine according to claim 2, characterized in that: The driving device is an electric motor.

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