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CN-122016540-A - Nylon tube friction and wear testing machine with adjustable temperature and testing method

CN122016540ACN 122016540 ACN122016540 ACN 122016540ACN-122016540-A

Abstract

The application relates to a nylon pipe friction and wear testing machine with adjustable temperature and an experimental method, and relates to the technical field of pipe testing. The testing machine comprises a machine case, a supporting plate arranged in the machine case and a temperature control device. The support plate is provided with a wear block and a clamping trolley in a sliding manner, the wear block is driven by the driving piece to slide along the fixing frame, and the sliding direction of the clamping trolley is perpendicular to the sliding direction of the clamping trolley. The clamping trolley is hinged to one side of the abrasion block, which is provided with a pair of clamping rods, and the side wall is provided with an abutting part for abutting the clamping rods to clamp and fix the pipe when the clamping parts are close to each other. And then, the abrasion block reciprocates between the clamping rods under the drive of the driving piece, and performs a friction test with the pipe. According to the application, through linkage cooperation of the clamping trolley, the hinged clamping rod and the abutting piece, quick and reliable clamping of the pipe is realized, a traditional bolt fastening mode is abandoned, the installation error is effectively reduced, and a foundation is provided for high-precision and repeatable friction and wear test.

Inventors

  • ZHAO WENBIN
  • WU LINPU
  • HUANG LIANG

Assignees

  • 湖北晨升汽车零部件科技有限公司

Dates

Publication Date
20260512
Application Date
20260227

Claims (10)

  1. 1. The utility model provides a temperature adjustable nylon tube friction wear testing machine which characterized in that includes: The machine box is internally provided with a supporting plate and a temperature control device; the abrasion block is arranged on the supporting plate in a sliding manner, a fixing frame for the abrasion block to slide is arranged on the supporting plate, and a driving piece for driving the abrasion block to slide is arranged on the fixing frame; The clamping trolley is arranged on the supporting plate in a sliding manner, the sliding direction of the clamping trolley is perpendicular to the sliding direction of the abrasion block, a pair of clamping rods are hinged to one side, facing the abrasion block, of the clamping trolley, the lower ends of the clamping rods are hinged to the clamping trolley, and an abutting piece is arranged on the side wall of the clamping trolley and used for abutting the clamping rods to fix a pipe on the side wall of the clamping trolley; The clamping piece is arranged on the supporting plate and used for clamping the clamping trolley with the abrasion blocks, and the abrasion blocks slide between the clamping rods and rub the pipe clamped on the clamping rods.
  2. 2. The testing machine according to claim 1, wherein fixing blocks are arranged at two ends of the clamping trolley, the fixing blocks are located on one sides of the clamping rods, which are away from each other, sliding grooves for sliding the abutting pieces are formed in the side walls, which face the clamping rods, of the fixing blocks, and the fixing blocks are used for supporting the abutting pieces to slide and abut against one sides, which are away from the clamping trolley, of the clamping rods.
  3. 3. The testing machine according to claim 2, wherein the abutting piece comprises an abutting block, a threaded rod and a gear, the abutting block is slidably arranged in the sliding groove, the abutting block slides along the extending direction of the hinge axis of the clamping rod, one end of the threaded rod is in threaded connection with the abutting block, the other end of the threaded rod is coaxially connected with the gear, the gear rotates in the fixed block, and the gear is used for driving the threaded rod to rotate so as to drive the abutting block to slide in and slide out of the sliding groove.
  4. 4. The testing machine according to claim 3, wherein a supporting rod is fixed on one side of the fixing frame facing the clamping trolley, an end of the supporting rod, which is far away from the clamping trolley, is provided with a tooth trace, the fixing block is provided with a slot for the supporting rod to be inserted, the gear rotates in the slot, the supporting rod is inserted into the slot, is positioned below the gear and is meshed with the gear through the tooth trace, and when the clamping trolley is close to the fixing frame, the inserting rod is inserted into the slot to drive the gear to rotate, so as to drive a threaded rod to rotate, and the threaded rod drives the abutting block to slide out of the sliding slot and abut against the clamping rod to rotate towards the clamping trolley.
  5. 5. The testing machine of claim 4, wherein the abutment is in threaded connection with the fixture, and the insections at one end of the abutment away from the fixture are uniformly distributed along the circumferential direction of the abutment.
  6. 6. The testing machine of claim 4, wherein the clamping trolley is connected with an ejecting rod in a rotating manner towards one side of the fixing frame, the ejecting rod is located between the clamping rod and the clamping trolley, the ejecting rod is close to a hinge shaft of the clamping rod, the hinge shaft of the ejecting rod is close to one end of the clamping trolley, one end of the ejecting rod close to the hinge shaft of the ejecting rod stretches into the fixing block and rotates in the fixing block, a spring is arranged in the fixing block, one end of the spring is arranged on the ejecting rod, and the spring is used for propping one end of the ejecting rod located in the fixing block to rotate downwards to drive one end of the ejecting rod located outside the fixing block to rotate upwards so as to eject a pipe from the position between the clamping rods.
  7. 7. The testing machine of claim 6, wherein an end of the abutment rod extending into the fixed block not only engages with the gear but also abuts against the bottom of the ejection rod, and an end of the abutment rod extending into the fixed block is used for abutting the ejection rod against the spring force and keeping the ejection rod horizontal between the clamping rods.
  8. 8. The testing machine of claim 1, wherein the clamping member comprises a pull rope connected to the clamping trolley, and a gravity block connected to one end of the pull rope far away from the clamping trolley, a through groove for the pull rope to pass through is formed in the supporting plate, and the gravity block is connected to one end of the pull rope passing through the through groove.
  9. 9. The testing machine of claim 1, wherein the driving member comprises a motor arranged on the fixing frame, a rotary table coaxially connected to an output shaft of the motor, and a crank rotatably connected to the rotary table, the crank is eccentrically rotatably connected to the rotary table, one end of the crank away from the rotary table is connected with the wear block, one end of the crank away from the rotary table is rotatably connected with a sliding block, a limiting rod penetrating through the sliding block in a sliding manner is arranged on the fixing frame, the wear block is fixed on one side of the sliding block away from the sliding block, and the crank is used for driving the sliding block to slide back and forth along the length direction of the limiting rod, so as to drive the wear block to slide back and forth between a pair of clamping rods.
  10. 10. A temperature-adjustable nylon tube frictional wear test method, which is characterized by being applied to the temperature-adjustable nylon tube frictional wear test machine in claim 1, and comprising the following steps: Controlling the temperature in the case based on the temperature control device; Driving the clamping trolley to be far away from the fixing frame, and placing the pipe between the clamping rod and the clamping trolley; The clamping piece is driven to clamp the clamping trolley and the abrasion block, the clamping rod is used for clamping the pipe on the side wall of the clamping trolley, and the abutting piece abuts against the clamping rod to fix the pipe on the side wall of the clamping trolley; And driving the driving piece to drive the abrasion block to rub with the pipe fixed on the fixing frame back and forth to carry out abrasion test, thereby obtaining a test result.

Description

Nylon tube friction and wear testing machine with adjustable temperature and testing method Technical Field The application relates to the technical field of pipe testing, in particular to a nylon pipe friction and wear testing machine with adjustable temperature and an experimental method. Background The frictional wear performance is a core index for evaluating the service life of nylon pipes in dynamic systems such as hydraulic systems, automobiles and the like. In practical working conditions, the friction behavior of nylon pipes is closely related to the ambient temperature, so it is important to simulate specific temperature conditions and conduct tests in a laboratory. At present, a general testing machine is generally adopted for friction and wear tests of nylon pipes, a nylon pipe sample and a mating piece are subjected to mating under a set load, and the wear degree is evaluated by measuring mass loss or surface morphology after the test. In order to consider the temperature factor, the existing method mostly adopts an external heating device to integrally heat the test area. However, nylon pipes are often fastened on the fixture through bolts, auxiliary tools such as screwdrivers are needed in the mounting and dismounting processes, the operation is complex and time-consuming, and the consistency and accuracy of the test are easily affected due to uneven clamping force. The fixing mode not only reduces the experimental efficiency, but also increases the artificial operation error, and further influences the reliability and repeatability of the friction and wear test. Disclosure of Invention In order to facilitate the installation, fixing and disassembly of the pipe during the friction and wear test on the nylon pipe and improve the reliability and repeatability of the friction and wear test, the application provides a temperature-adjustable nylon pipe friction and wear testing machine and an experimental method. The nylon pipe friction and wear testing machine with the adjustable temperature comprises a machine case, a supporting plate and a temperature control device are arranged in the machine case, a wear block is arranged on the supporting plate in a sliding mode, a fixing frame for enabling the wear block to slide is arranged on the supporting plate, a driving piece for driving the wear block to slide is arranged on the fixing frame, a clamping trolley is arranged on the supporting plate in a sliding mode, the sliding direction of the clamping trolley is perpendicular to the sliding direction of the wear block, a pair of clamping rods are hinged to one side, facing the wear block, of the clamping trolley, the lower end of each clamping rod is hinged to the corresponding clamping trolley, an abutting piece is arranged on the side wall of the corresponding clamping trolley and used for abutting the corresponding clamping rod to fix a pipe on the side wall of the corresponding clamping trolley, and a clamping piece is arranged on the supporting plate and used for clamping the corresponding clamping trolley with the corresponding clamping block and slides between the corresponding clamping rods and rubs the pipe on the corresponding clamping rods. By adopting the technical scheme, when the pipe is placed into the clamping trolley to be fixed, the pipe is only required to be placed between a pair of clamping rods, and the clamping rods clamp the pipe to the clamping trolley along with the clamping of the clamping piece clamping trolley and the abrasion block, and meanwhile, the abutting piece is driven to abut against the clamping rods to clamp the pipe to the clamping trolley again, so that the pipe can be reliably fixed, the experimental efficiency is greatly improved, the use of auxiliary tools and the manual operation time are reduced, and more importantly, the position, the gesture and the clamping force of each clamping are ensured to be highly consistent in a structured clamping mode. Therefore, the quick clamping and locking of the nylon pipe are realized through the cooperation of the clamping trolley, the hinged clamping rod and the abutting piece, the traditional bolt fastening mode is abandoned, the random error caused by sample installation difference is reduced from the source, and a solid foundation is laid for the high-precision and high-repeatability measurement of the follow-up friction coefficient, temperature and abrasion loss. Optionally, the both ends of centre gripping dolly are provided with the fixed block, the fixed block is located a pair of the clamping lever deviates from one side mutually, the fixed block orientation offer on the lateral wall of clamping lever confession the gliding spout of butt piece, the fixed block is used for supporting the butt piece slides and with the clamping lever deviates from one side looks butt of centre gripping dolly. Through adopting above-mentioned technical scheme, the fixed block provides stable, accurate guide rail (spout) for the