CN114778359A - Roller chain hinge abrasion test tool and roller chain abrasion test method - Google Patents

Abstract

The invention provides a roller chain hinge abrasion test tool which at least comprises a driving swing rod, a mounting connecting rod, a plurality of supporting blocks and a loading mechanism. The driving swing rod can swing left and right. And the connecting rod is installed and connected with the driving swing rod. The installation connecting rod is provided with a plurality of connecting rods, the connecting rods are parallel to the driving swing rod, and the lower ends of the connecting rods are provided with connecting parts which can be connected with hinges. The supporting shoe is fixedly arranged below the connecting rod. The supporting block is provided with a mounting groove. The loading mechanism comprises a chain plate which can be connected with the hinge and a loading mechanism which is detachably and fixedly connected with the chain plate, and the chain plate is provided with an insertion hole through which a pin shaft of the hinge can pass. The link joint includes first link joint and second link joint, and first link joint can be connected with round pin axle clearance fit, and the second link joint can be with round pin axle interference fit fixed connection. The invention also provides a roller chain hinge abrasion test method. The invention can conveniently test the wear resistance of the roller chain pin shaft and the sleeve hinge pair.

Description

Roller chain hinge abrasion test tool and roller chain abrasion test method

Technical Field

The invention relates to the field of chain testing devices, in particular to a roller chain hinge abrasion testing tool and a roller chain abrasion testing method.

Background

Roller chain transmission is an engagement transmission with intermediate flexible members, which has developed into a fundamental element of great importance in the modern mechanical industry. Wear is the most common failure mode of roller chains, and elements of roller chains are subject to wear damage during operation. One form of wear of the roller chain is wear caused by sliding friction between the pin and the bearing surface of the bushing as the roller chain oscillates and pulls between adjacent links as they engage and disengage the sprocket. Another form of wear is that tension between adjacent hinges increases the overall length of the roller chain, making the edges of the roller chain prone to jumping and increasing shock during start-up or reversing. The elongation of the wear of the hinge pitch to a certain extent deteriorates the engagement of the roller chain hinge with the gear teeth, so that the phenomena of climbing and tooth jumping occur, the dynamic load is increased, vibration occurs, noise and other damages are caused, and the like.

Thus, wear resistance is an important performance indicator for chain products. The existing chain wear resistance test method at home and abroad is a whole chain wear test, during the test, the roller chain needs to be integrally installed on chain wear test equipment, a certain load is applied, the roller chain runs at a specified speed, and the roller chain is regularly measured to determine the wear degree. For example, patent publication No. CN112254959A provides a chain wear resistance testing device and a method of using the same. The defect of the scheme is that the whole chain is long, so that the volume of the test equipment is relatively large for matching the chain, and the occupied area is large; moreover, the test energy consumption and noise are large, the labor intensity of test detection personnel is high, and the abrasion conditions of the bearing surfaces of the pin shaft and the sleeve in the hinge forming the chain cannot be visually observed due to the fact that the chain is tested, and if the abrasion conditions of the pin shaft are observed and measured, the observation is carried out by disassembling the roller chain and then disassembling the pin shaft.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the existing equipment structure for testing the wear resistance of the chain and the use method are very complicated, the chain is generally required to be integrally installed on the equipment for testing, the size of the tested equipment is very large, the energy consumption and the noise are also large, and further the test method is also complicated.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

the invention provides a roller chain hinge abrasion test tool, which at least comprises:

the driving swing rod is connected with a driving mechanism for driving the driving swing rod to swing left and right;

the mounting connecting rod is connected with the driving oscillating bar; the mounting connecting rod is provided with a plurality of connecting rods, the connecting rods are parallel to the driving swing rod, and the lower ends of the connecting rods are provided with connecting parts which can be connected with hinges;

the loading mechanism comprises a chain plate which can be connected with a hinge, a loading mechanism which is detachably and fixedly connected with the chain plate and a plurality of supporting blocks; the chain plate is provided with a jack through which a pin shaft of the hinge can pass; the chain plates comprise a first chain plate and a second chain plate, the first chain plate can be in clearance fit connection with the pin shaft, and the second chain plate can be in interference fit fixed connection with the pin shaft; the supporting blocks are fixedly arranged below the connecting rods and correspond to the connecting rods one by one; the supporting block is provided with a mounting groove for mounting a hinge;

and after the hinges are respectively connected with the connecting rods and the mounting grooves, the driving swing rod, the mounting connecting rods, the connecting rods and the hinges form a parallel four-bar mechanism.

Preferably, the first chain plate and the pin shaft can be locked and fixed by the locking piece.

Preferably, the device further comprises an auxiliary swing rod, the auxiliary swing rod is connected with the mounting connecting rod and parallel to the driving swing rod, and the driving swing rod, the mounting connecting rod and the auxiliary swing rod form a parallel four-bar mechanism.

Preferably, the connecting portion is rotatably movably connected with the hinge.

Further, the connecting portion includes a clip that can grip an upper roller of the hinge.

Preferably, the driving mechanism comprises a driving rotating wheel, the driving rotating wheel can automatically rotate, and an eccentric connecting sliding block is arranged at a position deviating from the center of a circle on the driving rotating wheel; the driving swing rod is provided with a sliding groove, and the eccentric connecting sliding block is in sliding connection with the sliding groove.

Furthermore, an eccentric mounting groove extending along the radial direction is formed in the driving rotating wheel, the eccentric connecting sliding block is connected into the eccentric mounting groove, and the eccentric connecting sliding block can be fixed at any position in the eccentric mounting groove.

Preferably, the load mechanism includes:

the load mounting plate is detachably and fixedly connected with the first chain plate and the second chain plate at the same time;

the load connecting block is fixedly connected with the load mounting plate;

the load piece is detachably connected with the load connecting block in a specified manner.

The invention also provides a roller chain abrasion test method, each hinge comprises a lower roller, a hinge plate, a pin shaft, a sleeve and an upper roller, the sleeves are respectively arranged in the upper roller and the lower roller, the pin shaft respectively penetrates through the hinge plate and is inserted into the sleeve, the hinges are independent individuals, and any roller chain hinge abrasion test tool is used;

before testing, selecting a load mechanism with proper weight and hanging the load mechanism on the chain plate;

the test steps include:

s1: adjusting the driving mechanism to enable the driving swing rod to swing within a preset amplitude range and according to a preset frequency;

s2: connecting the upper roller with the connecting rod, installing the lower roller in the installation groove, installing a pin shaft, and enabling the pin shaft to simultaneously penetrate through the chain plate and the hinge plate so as to enable the loading mechanism to be connected with a hinge;

s3: starting a driving mechanism to drive the driving swing rod to swing, so that the hinge swings along with the connecting rod;

s4: after a predetermined test time, the driving mechanism is stopped, the hinge is disassembled, and the abrasion condition of each part of the hinge is observed.

Preferably, the roller chain hinge wear test tool is used, and a step S3.5 is further included between the step S3 and the step S4: and (3) pausing the driving mechanism, observing and recording the abrasion condition of the hinge after the first chain plate is detached, reinstalling the first chain plate after recording, and restarting the driving mechanism to ensure that the hinge continues to swing for testing.

The scheme can simulate the abrasion caused by relative sliding friction of the surfaces of the pin shaft and other parts of the hinge when the chain is meshed in and meshed out of the chain wheel under the appointed load and the surfaces of the adjacent hinges swing at a specific angle, and records the abrasion state and determines the abrasion resistance through presetting the swinging angle and the swinging times of the bearing surface of the pin shaft.

The scheme has the advantages that:

1. this scheme is not whole to test the chain, but tests every hinge of constituteing the chain, because the volume of hinge is generally less, the whole size of roller chain hinge abrasion test frock can effectively be controlled, only tests hinge abrasion in the process of the test moreover, and test equipment occupies the place for a short time.

2. The energy that this frock of drive needs to consume is lower, and produced vibration and noise are all less in the swing course of operation moreover, and application method is very simple, has effectively reduced measurement personnel's intensity of labour, can improve experimental security moreover.

3. The hinge can simulate various stress conditions of the hinge in actual use.

4. Because the hinge is tested, only the hinge needs to be detached from the test tool when the abrasion condition is observed, the existing testing device tests the whole roller chain, the chain needs to be detached from the test tool when the abrasion condition is observed, and the chain needs to be detached into the hinge. Moreover, each hinge is independently loaded, and the chain abrasion test tool can test the hinges with different loading weights in one-time operation process.

5. The test bench can also pause at any time, the surface abrasion condition of the pin shaft is observed after the first chain plate is detached, the abrasion loss directly corresponds to the swinging times, and the test can be continuously carried out after the first chain plate is installed after the observation is finished.

Drawings

FIG. 1 is a schematic diagram of a preferred embodiment of a roller chain hinge wear test fixture;

FIG. 2 is a schematic view of the roller chain mounted on the supporting seat;

FIG. 3 is a front view of the loading assembly;

FIG. 4 illustrates a side view of the loading assembly;

description of the reference numerals: 10-mounting connecting rod, 11-connecting rod, 111-clamping head, 12-auxiliary oscillating rod, 13-driving oscillating rod, 20-hinge, 21-chain plate, 210-sleeve, 211-first chain plate, 212-second chain plate, 213-lower roller, 214-locking piece, 215-jack, 22-pin shaft, 23-hinge plate, 24-upper roller, 3-supporting table surface, 31-supporting block, 310-mounting groove, 4-driving rotating wheel, 41-eccentric mounting groove, 42-eccentric connecting sliding block, 43-sliding groove, 5-loading mechanism, 50-loading mounting plate, 51-loading connecting block and 52-loading piece.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, an integral connection, and a detachable connection; may be communication within two elements; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention in specific cases.

A preferred embodiment of the roller chain hinge wear test tool is shown in fig. 1 and comprises a driving swing link 13, a mounting link 10 and a loading mechanism.

The lower end of the driving swing rod 13 is rotatably and movably connected to an external mechanism, for example, the driving swing rod 13 is rotatably and movably connected to the supporting table top 3, and the driving swing rod 13 can swing along the lower end. The driving swing rod 13 is connected with a driving mechanism, and the driving mechanism can drive the driving swing rod 13 to swing left and right in a reciprocating manner. The adjusting driving mechanism can adjust the swing amplitude and the swing frequency of the driving swing rod 13, and different test working condition requirements are met. The driving mechanism can be a motor or various swing driving mechanisms which are commonly known in the prior art. The embodiment of the present invention provides a preferred driving mechanism, the driving mechanism includes a driving wheel 4, the driving wheel 4 is connected with a driving motor or any other mechanism capable of driving the driving wheel 4 to rotate, and the driving wheel 4 can continuously rotate. An eccentric connecting slide block 42 is arranged at a position deviating from the center of a circle on the driving rotating wheel 4, a sliding groove 43 is arranged on the driving swing rod 13, and the eccentric connecting slide block 42 is connected in the sliding groove 43. The sliding groove 43 extends along the length direction of the active swing link 13. When the driving wheel 4 rotates, the eccentric connecting slide block 42 can slide in the sliding groove 43 to drive the driving swing rod 13 to swing, so as to realize the driving function.

Further, the driving wheel 4 is further provided with an eccentric mounting groove 41 extending in a radial direction, and the eccentric link slider 42 may be fixed at any position in the eccentric mounting groove 41. The function of adjusting the swing amplitude of the driving swing rod 13 can be realized by adjusting the installation position of the eccentric connection sliding block 42.

The mounting connecting rod 10 is connected with the driving swing rod 13, and the mounting connecting rod 10 is horizontally arranged and can swing left and right along with the driving swing rod 13. The mounting connecting rod 10 is provided with a plurality of connecting rods 11, and the connecting rods 11 are parallel to the driving swing rod 13. When the mounting link 10 moves left and right, the connecting rod 11 also swings left and right, and the connecting rod 11 can be connected with the hinge 20 of the roller chain to drive the hinge 20 to swing. Generally, the hinge comprises an upper roller 24, a hinge plate 23 and a lower roller 213, the hinge plate 23 connects the upper roller 24 and the lower roller 213, the hinge plate 23 is connected with the upper roller 24 and the lower roller 213 by a pin 24, a sleeve 210 adapted to the pin 24 is further disposed in the upper roller 24 and the lower roller 213, and the lower roller 213 can swing around the pin 24 after the sleeve 210 is engaged with the pin 24. The connecting rod 11 comprises a clamping portion comprising a jaw 111, the jaw 111 being able to clamp the upper roller 24 of the hinge. Of course, the connecting rod 11 may also stabilize the hinge 20 by other means, as long as the upper roller 24 can be mounted on the connecting rod 11 and swing with the connecting rod 11.

Further, the collet 111 clamps the upper roller 24 in a clearance fit manner, and a certain clearance is provided between the upper roller 24 and the collet 111, so that the collet 111 can be effectively prevented from causing too much wear to the upper roller 24 in order to clamp the upper roller 24, and the wear test can be performed on the upper roller 24 after the hinge 20 is turned. This is because the connecting rod 11 only needs to play the role of toggling the hinge 20 to swing, and does not need to tightly clamp the hinge 20, and the purpose of toggling the hinge 20 to swing can be achieved by the chuck 111 only touching the upper roller 24 under the condition of having a gap.

Furthermore, an auxiliary swing rod 12 parallel to the driving swing rod 13 is further provided, the lower end of the auxiliary swing rod 12 is rotatably and movably connected to an external mechanism, and the connection position of the auxiliary swing rod 12 and the connection position of the lower end of the driving swing rod 13 are located at the same horizontal height. The auxiliary rocker 12 is likewise connected to the mounting link 10. The driving swing rod 13, the auxiliary swing rod 12 and the mounting connecting rod 10 form a parallel four-bar mechanism which moves stably. The auxiliary swing link 12 may function to enhance the swing stability of the driving swing link 13.

The loading mechanism comprises a chain plate 21, a loading mechanism and a supporting block 31, the loading mechanism is detachably and fixedly connected with the chain plate 21, and the loading mechanism has a certain weight. The link plate 21 may be connected with the hinge 20. As shown in fig. 2, the link plate 21 and the hinge 20 are connected by a connection manner, in which an insertion hole 215 is formed in the link plate 21, and the pin 22 is inserted into the lower roller 213 after passing through the insertion hole 215, thereby connecting the link plate 21 and the hinge 20 to each other. The load mechanism can provide a pulling force to the pin 22 of the hinge through the chain plate 21, and the pulling force generated between adjacent hinges in the actual use process of the roller chain is simulated. When the connecting rod 11 swings, the hinge is driven to swing, at this time, as the chain plate 21 is fixedly connected with the pin shaft 22, the pin shaft 22 can rotate relative to the hinge plate 23, so that relative motion can be generated between the chain plate 21 and the hinge plate 23, and friction generated between adjacent hinges in the actual use process of the roller chain is simulated. The general roller is provided with a sleeve 210 matched with the pin 22, and the wear resistance of the sleeve 210 can be tested when the pin 22 rotates relative to the lower roller 213. Therefore, the roller chain hinge abrasion test tool can simulate various external force influences on the hinge in the using process. By replacing the load mechanism, the pulling force applied to the hinge can be adjusted, thereby facilitating the simulation of different working conditions. The supporting block 31 is fixedly arranged, for example, referring to the embodiment, the supporting table top 3 is arranged for fixing the supporting block 31. The supporting blocks 31 correspond to the connecting rods 11 one by one, and each connecting rod 11 corresponds to one supporting block 31. The supporting block 31 is provided with a mounting groove 310, the mounting groove 310 is adapted to the lower roller 213 of the hinge, and the lower roller 213 can be mounted in the mounting groove 310. Specifically, the shape of the mounting groove 310 is the same as the shape of the tooth space of the sprocket connected when the hinge 20 is used, and the engagement of the hinge 20 with the sprocket can be simulated. The function of the support block 31 is to provide support for the hinge so that it can remain stable during testing. Moreover, in the process of the hinge swinging, the lower roller 213 rolls in the mounting groove 310, and the friction borne by the roller in the actual use process can be simulated.

As shown in fig. 2, the link plate 21 includes a first link plate 211 and a second link plate 212, wherein the second link plate 212 is in interference fit with the pin 22, so that the second link plate 212 can be fixed with the pin 22; first link joint 211 and round pin axle 22 clearance fit, and be equipped with locking piece 214 and compress tightly first link joint 211 and hinge plate 23, prevent that first link joint 211 from droing. The locking member 214 may be an existing locking member, and will not be described herein. In this arrangement, the driving mechanism can be suspended at any time during the test, and then the first link plate 211 can be easily removed by removing the locking member 214, so as to confirm the wear of the hinge 20. After confirmation, the first link plate 211 can be re-fixed for further testing. The second hinge plate 212 is always fixedly connected with the pin 22, and the loading mechanism is not influenced to apply load to the hinge. This preferred embodiment thus facilitates the recording of wear over time without the need to completely remove the hinge, increasing the versatility of the test method.

The specific structure of the load mechanism is shown in fig. 3 and 4, and comprises a load mounting plate 50, a load connecting block 51 and a load member 52. The load mounting plate 50 is connected with the first chain plate 211 and the second chain plate 212 at the same time, so that the load mechanism is stably connected with the chain plates, and the stress on two sides of the hinge is uniform. The load connecting block 51 is fixedly connected with the load mounting plate 50, and a mounting position of a load member 52 is arranged on the load connecting block 51. The load member 52 can be removed, and the load applied to the load mechanism can be changed by replacing the load member 52 of different weight, so that the test can be conveniently carried out, and the replacement method is very simple and convenient.

The roller chain hinge abrasion test tool can be used for performing a roller chain abrasion test. The test object of the roller chain abrasion test is the hinge 20 of the roller chain, and the hinge 20 is an independent body after being disassembled, and the structure is shown in fig. 1 and fig. 3. The embodiment provides a specific roller chain wear test method, and the specific scheme is as follows:

before testing, the amount of tension required to be applied to the hinge 20 is determined, and a load mechanism of appropriate weight is selected to be hung on the link plate 212.

The specific test steps include:

s1: the drive mechanism is adjusted such that the active rocker 13 can be rocked within a predetermined amplitude range and at a predetermined frequency. Specifically, for the embodiment, first, the position of the eccentric link block 42 in the eccentric mounting groove 41 is adjusted, and the closer the eccentric link block 42 is to the edge of the driving wheel 4, the larger the swing amplitude of the driving swing link 13 is. The adjustment of the swing frequency of the driving swing rod 13 can be realized by adjusting the rotation speed of the driving rotating wheel 4. If necessary, a counting sensor and an angle encoder can be arranged to automatically record the swing frequency and swing amplitude of the active swing link 13.

S2: the hinge 20 is installed. The upper roller 24 is coupled to the connecting rod 11, the lower roller 213 is fitted into the mounting groove 310, and the link plate 21 is coupled to the lower roller 213. The link plate 21 is provided with a hole 215, and the pin 22 passes through the hole 215 and the lower roller 213 simultaneously, so as to connect the link plate 21 with the hinge 20.

S3: and starting a driving mechanism to enable the driving swing rod 13 to swing to drive the installation connecting rod 10 and the connecting rod 11 to swing, and shifting the hinge when the connecting rod 11 swings. The driving swing rod 13, the mounting connecting rod 10 and the connecting rod 11 form a parallel four-bar mechanism to swing left and right to drive the hinge 20 to swing. Friction is generated between the hinge 20 and the chain plate 21, and meanwhile, the chain plate 21 can apply tension to the pin shaft 22, so that the stress mode of the hinge 20 in actual use is simulated, and a wear test is carried out.

S3.5: the drive mechanism is halted, the locking member 214 is removed, the first link plate 211 is removed, and the wear of the pin 22 is observed and recorded. After that, the first link plate 211 and the locking member 214 are mounted to continue the test. The step is mainly convenient for recording the abrasion at any time, and is not beneficial to confirming the abrasion after waiting for the preset test time, thereby being beneficial to confirming the test data at any time. Moreover, after the pause, only the first chain plate 211 needs to be taken down without the need of integrally detaching the chain plate 21, and the first chain plate 211 is in clearance fit, so that the detachment is very convenient, and the operation method is also very simple and convenient.

S4: after a predetermined test time, the drive mechanism is stopped, the hinge 20 is removed and the wear is observed and recorded.

In the roller chain test method provided by the scheme, the pulling force applied to the pin shaft 22 by the chain plate 21 can simulate the pulling force generated between the mutually connected hinges when the roller chain is used; the friction between the chain plate 21 and the pin shaft 22 can simulate the friction on the pin shaft 22 in actual use; the friction generated between the chain plate 21 and the hinge plate 23 can simulate the friction born by the hinge plate 23 in actual use; the pin shaft 22 applies pressure to the sleeve 210 after being pulled downwards by the chain plate 21, and the pressure applied to the sleeve 210 in the actual use process can be simulated; the first link plate 211 is in interference fit with the pin 22, so that the pin 22 will roll relative to the sleeve 210 when the hinge 20 swings, and the abrasion caused by the relative sliding friction between the bearing surfaces of the pin 24 and the sleeve 210 due to the mutual swinging of the adjacent hinges when the roller chain is engaged into and disengaged from the sprocket under a specified load condition is simulated. Therefore, the roller chain test method provided by the scheme can simulate various stress conditions of the hinge 20 in normal use, so that the tested wear resistance is more accurate. Moreover, the embodiment tests the single hinge 20, and the abrasion condition of the pin 22 or other parts of the hinge 20 can be very intuitively observed after the hinge 20 is detached, so that the work flow is facilitated to be simplified, and the test efficiency is improved.

In conclusion, the above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a roller chain hinge wear test frock which characterized in that includes at least:

the driving swing rod (13) is connected with a driving mechanism for driving the driving swing rod to swing left and right;

the mounting connecting rod (10) is connected with the driving swing rod; the mounting connecting rod is provided with a plurality of connecting rods (11), the connecting rods are parallel to the driving swing rod, and the lower ends of the connecting rods are provided with connecting parts which can be connected with hinges (20);

the loading mechanism comprises a chain plate (21) which can be connected with a hinge, a loading mechanism which is detachably and fixedly connected with the chain plate and a plurality of supporting blocks (31); the chain plate is provided with an insertion hole (215) through which a pin shaft of the hinge can pass; the chain plates comprise a first chain plate (211) and a second chain plate (212), the first chain plate can be in clearance fit connection with the pin shaft, and the second chain plate can be in interference fit fixed connection with the pin shaft; the supporting blocks are fixedly arranged below the connecting rods and correspond to the connecting rods one by one; the supporting block is provided with a mounting groove (310) for mounting a hinge;

and after the hinges are respectively connected with the connecting rods and the mounting grooves, the driving swing rod, the mounting connecting rods, the connecting rods and the hinges form a parallel four-bar mechanism.

2. The wear test tool for the hinge of the roller chain according to claim 1, further comprising a locking member (214), wherein the locking member can lock and fix the first link plate and the pin shaft.

3. The roller chain hinge wear test tool according to claim 1, further comprising an auxiliary swing link (12), wherein the auxiliary swing link is connected with the mounting connecting rod and is parallel to the driving swing link, and the driving swing link, the mounting connecting rod and the auxiliary swing link form a parallel four-bar mechanism.

4. The roller chain hinge wear test tool of claim 1, wherein the connecting portion is rotatably and movably connected with the hinge.

5. The roller chain hinge wear test fixture of claim 4, characterized in that the connecting portion includes a collet (111) that can grip an upper roller (24) of the hinge.

6. The roller chain hinge abrasion test tool according to claim 1, wherein the driving mechanism comprises a driving rotating wheel (4), the driving rotating wheel can automatically rotate, and an eccentric connecting sliding block (42) is arranged at a position deviating from a circle center on the driving rotating wheel; a sliding groove (43) is formed in the driving swing rod, and the eccentric connecting sliding block is in sliding connection with the sliding groove.

7. The tool for testing the abrasion of the roller chain hinge according to claim 6, wherein the driving runner is provided with an eccentric mounting groove (41) extending along a radial direction, the eccentric connecting sliding block is connected in the eccentric mounting groove, and the eccentric connecting sliding block can be fixed at any position in the eccentric mounting groove.

8. The roller chain hinge wear test fixture of claim 1, wherein the loading mechanism comprises:

the load mounting plate (50) is detachably and fixedly connected with the first chain plate and the second chain plate at the same time;

the load connecting block (51) is fixedly connected with the load mounting plate;

a load member (52) removably engaged with the load connection block.

9. A roller chain wear test method, the roller chain comprises a plurality of hinges, each hinge comprises a lower roller (213), a hinge plate (23), a pin (22), a sleeve (210) and an upper roller (24), the sleeves are respectively arranged in the upper roller and the lower roller, the pin can pass through the hinge plate and be inserted into the sleeve so as to connect the hinge plate with the upper roller and the lower roller, and the roller chain hinge wear test tool is characterized in that the roller chain hinge wear test tool of any one of claims 1-8 is used;

before testing, firstly, the pin shaft in the lower roller is detached; selecting a load mechanism with proper weight, and hanging the load mechanism on the chain plate;

the test steps include:

s1: adjusting the driving mechanism to enable the driving swing rod to swing within a preset amplitude range and according to a preset frequency;

s2: connecting the upper roller with the connecting rod, installing the lower roller in the installing groove, aligning the inserting hole of the chain plate with the lower roller, and then installing a pin shaft, wherein the pin shaft simultaneously penetrates through the chain plate and the hinge plate so as to enable the chain plate to be connected with a hinge;

s3: starting a driving mechanism to drive the driving swing rod to swing, so that the hinge swings along with the connecting rod;

s4: after a predetermined test time, the driving mechanism is stopped, the hinge is disassembled, and the abrasion condition of each part of the hinge is observed.

10. The roller chain wear test method of claim 9, further comprising, between the step S3 and the step S4, a step S3.5: and pausing the driving mechanism, observing and recording the abrasion condition of the hinge after the first chain plate is detached, reinstalling the first chain plate after recording, and restarting the driving mechanism to ensure that the hinge continues to swing for testing.

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