CN217716899U - Hinge pair abrasion tester - Google Patents
Hinge pair abrasion tester Download PDFInfo
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- CN217716899U CN217716899U CN202221321064.8U CN202221321064U CN217716899U CN 217716899 U CN217716899 U CN 217716899U CN 202221321064 U CN202221321064 U CN 202221321064U CN 217716899 U CN217716899 U CN 217716899U
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Abstract
The utility model relates to a test equipment specifically discloses a vice wear testing machine of hinge. The hinge pair abrasion tester at least comprises a frame, a clamping module, a loading module and a driving module; the rack comprises a mounting seat, and a shaft hole is formed in the mounting seat; the clamping module comprises an upper clamping head and a rotating arm, wherein a fixed clamping position is arranged on the upper clamping head, and a rotating clamping position is arranged on the rotating arm; the loading module comprises a cantilever and a rotary support part, and the cantilever is rotatably and movably connected with the rotary support part; one end of the rotating arm is connected with the upper chuck, and the other end of the rotating arm is provided with a load unit; during testing, the driving module drives the rotating arm to rotate relative to the mounting seat. The hinge pair abrasion testing machine can well simulate the movement of a hinge pair, can apply preset load to the hinge pair and better simulate actual use working conditions.
Description
Technical Field
The utility model relates to a test equipment especially relates to a vice wear testing machine of hinge.
Background
The hinge pair is a kinematic pair which is composed of two components and can only do relative motion around a certain axis. The abrasion life is an important index for judging the quality of the hinge pair, and directly influences the service life of the hinge pair. Although a formula for calculating the wear life of the hinge pair exists at present, the factors influencing the wear life are more, the actual use working conditions of the hinge pair are complex and various, the calculation result can only be approximately concluded, and the wear life of the hinge pair cannot be accurately evaluated.
Therefore, the service condition of the hinge pair needs to be simulated through the abrasion tester, more direct abrasion life data is obtained, and the abrasion life of the hinge pair is accurately evaluated.
Taking a common hinge pair chain as an example, the most critical is the wear life between the pin shaft and the inner chain link. At present, a common chain abrasion tester usually assembles a chain after being connected in a loop on a matched chain wheel, and the result is obtained in advance by accelerating the operation of the chain. However, this method can only be used for small chains such as standard roller chains, and is not suitable for conventional hinge pairs, and even for large-sized chains such as escalator chains and large-pitch conveying chains. Therefore, the hinge pair abrasion testing machine with better universality needs to be designed.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a vice wear testing machine of hinge, the vice motion of simulation hinge that can be fine to can apply preset load, the vice in-service behavior of better simulation hinge to the hinge.
In order to solve the technical problem, the utility model provides a technical scheme as follows: a hinge pair wear tester comprising at least:
the device comprises a rack, a positioning device and a control device, wherein the rack comprises a mounting seat, and a shaft hole is formed in the mounting seat;
the clamping module comprises an upper clamping head and a rotating arm, wherein a fixed clamping position is arranged on the upper clamping head, and a rotating clamping position is arranged on the rotating arm;
the loading module comprises a cantilever and a rotary supporting part, the rotary supporting part is arranged on the rack, and the cantilever is rotatably and movably connected with the rotary supporting part; one end of the cantilever is connected with the upper chuck, and the other end of the cantilever is provided with a load unit;
a driving module for driving the motor and the motor,
during testing, the upper chuck clamps the fixed part of the hinge pair, the rotating arm is connected with the movable part of the hinge pair and limited to synchronously rotate with the movable part of the hinge pair, and the driving module drives the rotating arm to rotate relative to the mounting seat.
Before testing, a proper test sample is selected, one of two relative rotating pieces in a hinge pair of the test sample is used as a fixing piece and is connected with a fixed clamping position of an upper chuck, the other part in the hinge pair is used as a rotating piece and is connected with a rotating clamping position of a rotating arm, and the rotating piece is arranged in a rod piece mode.
And then adjusting a load unit, wherein the load of the load unit is transferred to the test sample on the clamping module in a lever mode through a cantilever and acts on a rotating pair between the fixed part and the rotating part to simulate the load condition of the hinge pair in the actual use process.
And finally, the driving module drives the rotating arm and the rotating piece to synchronously rotate back and forth relative to the fixing piece, so that the motion working condition of the hinge pair in the actual use process is simulated.
By adopting the hinge pair abrasion testing machine, the actual use working condition of the hinge pair can be well simulated, so that more real test data can be obtained, and more reliable basis is provided for the abrasion life of the hinge pair.
Preferably, the mounting seat comprises two mounting plates arranged in parallel, shaft holes are respectively formed in the two mounting plates, and the two shaft holes are coaxially arranged; a clamping space is formed between the two mounting plates. Through two mounting panels centre gripping simultaneously, the centre gripping is more reliable and more stable.
Preferably, the rotating arms are arranged in one-to-one correspondence with the mounting plate and arranged on the outer side of the mounting plate, an intermediate rod is arranged between the two rotating arms, and the air cylinder is connected with the intermediate rod and drives the intermediate rod and the two rotating arms to synchronously swing.
Preferably, the rack is further provided with a support beam, and the support beam is perpendicular to the shaft hole; the rotary supporting piece is arranged on the supporting beam, and the cantilever and the supporting beam extend in the same direction.
The support beam may be used to mount the rotary support, carrying the rotary support, the cantilever and the additional load. Meanwhile, the cantilever and the supporting beam extend in the same direction, when the constraint of one end, corresponding to the upper chuck, of the cantilever is released, namely the test sample is disassembled and assembled, the cantilever can rotate to be in contact with the supporting beam, the cantilever is supported temporarily through the supporting beam, the rotation range of the cantilever is limited, and convenience is brought to the disassembling and assembling operation of the test sample.
Preferably, the upper chuck comprises a first clamping block and a second clamping block, and the first clamping block and the second clamping block are arranged in a split manner; the first clamping block and the second clamping block are respectively provided with a clamping groove, and the two clamping grooves are oppositely arranged and jointly enclose a fixed clamping position. The first clamping block and the second clamping block are arranged in a split mode and are matched with clamping, so that the dismounting performance and the clamping reliability can be well considered.
Preferably, the first clamping block and the second clamping block are respectively provided with a mounting hole, and the cantilever is sequentially inserted into the two mounting holes.
Auxiliary connecting pieces such as screws and the like can be omitted between the cantilever and the upper chuck, and only the cantilever is inserted into the mounting hole of the upper chuck and is compressed by the pressure between the cantilever and the upper chuck. By adopting the connection mode, the disassembly and assembly convenience between the cantilever and the upper chuck can be improved, and the matching and separation operation between the first clamping block and the second clamping block can be realized more conveniently. Meanwhile, under the compression action of the load, the connection reliability between the cantilever and the upper chuck can be ensured.
Preferably, the rotating arm is provided with a key-free bushing which plays a role in connecting and transmitting torque between the rotating arm and the rotating part of the test sample.
Preferably, the driving module comprises an air cylinder arranged on the frame. Under the test state, the rotating arm, the rack and the air cylinder jointly form a crank connecting rod sliding block mechanism, and the synchronous reciprocating rotation of the rotating arm and the test sample rotating part can be realized through the inflation and deflation of the air cylinder, so that the motion working condition of the hinge pair is simulated.
Drawings
FIG. 1 is a schematic structural diagram of a test sample of the hinge pair abrasion tester of the embodiment;
FIG. 2 is a schematic structural diagram of the hinge pair abrasion tester of the embodiment;
FIG. 3 is a partial exploded view of the hinge pair abrasion tester of the present embodiment;
FIG. 4 is a front view of the abrasion tester of the hinge pair of the present embodiment;
FIG. 5 is a top view of the hinge pair abrasion tester of the present embodiment;
FIG. 6 is a partial cross-sectional view of the hinge pair abrasion tester of the present embodiment;
FIG. 7 is an enlarged view of a portion of FIG. 2 at A;
FIG. 8 is a partial view of the load unit and the cantilever in the hinge pair abrasion tester of the present embodiment;
fig. 9 is an exploded view of the cantilever and the upper chuck in the hinge pair abrasion tester of the present embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in 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.
Examples
As shown in fig. 2 to 5, a hinge pair abrasion tester at least comprises a frame 4, a clamping module 2, a loading module 1 and a driving module 3.
As shown in fig. 2 and fig. 3, the frame 4 includes a mounting base, the mounting base includes two mounting plates 14 arranged in parallel, two of the mounting plates 14 are respectively provided with a shaft hole, and the two shaft holes are coaxially arranged. A clamping space is formed between the two mounting plates 14, and the test sample 5 is arranged in the clamping space during the test. The clamping is more stable and reliable by clamping the two mounting plates 14 simultaneously.
As shown in fig. 2, 3 and 7, the clamping module 2 includes an upper clamp 21 and a rotating arm 22, the upper clamp 21 is provided with a fixed clamping position, and the rotating arm 22 is provided with a rotating clamping position. The upper chuck 21 clamps and limits the fixing part in the hinge pair through the fixed clamping position, and the rotating arm 22 is used for being connected with the rotating part. The stationary member remains stationary during the test and the rotary member rotates in synchronism with the rotary arm 22.
The upper jaw 21 may be integral, for example in the form of a hook, for hooking directly to the fixing member. As shown in fig. 3 and 9, as a preferred embodiment, the upper clamp 21 includes a first clamping block 211 and a second clamping block 212, and the first clamping block 211 and the second clamping block 212 are separately provided. The first clamping block 211 and the second clamping block 212 are respectively provided with a clamping groove 214, and the two clamping grooves 214 are oppositely arranged and jointly enclose a fixed clamping position. The first clamping block 211 and the second clamping block 212 are arranged in a split mode and are matched with each other for clamping, so that the dismounting performance and the clamping reliability can be well considered. The first clamping block 211 and the second clamping block 212 can be hinged, and can also be connected in a clamping and threaded manner.
Wherein the pivot arm 22 may be connected to the rotating member in the form of a key connection, or in the form of a drive pin. As shown in fig. 3 and 7, as another preferred embodiment, the rotation arm 22 is provided with a key-free bushing 24, and the key-free bushing 24 is used for connecting and transmitting torque between the rotation arm 22 and the rotation part of the test sample 5.
As shown in fig. 2 and 3, the loading module 1 includes a cantilever 12 and a rotary support 13, the rotary support 13 is disposed on the frame 4, and the cantilever 12 is rotatably and movably connected with the rotary support 13. One end of the cantilever 12 is connected with the upper chuck 21, and the other end is provided with a load cell.
The cantilever 12 can be connected with the upper chuck 21 in a hinged, clamping and threaded manner.
As shown in fig. 9, as a preferred embodiment, the first clamping block 211 and the second clamping block 212 are respectively provided with mounting holes 213, and the cantilever 12 is sequentially inserted into the two mounting holes 213. Instead of using auxiliary connecting members such as screws, only the cantilever 12 may be inserted into the mounting hole 213 of the upper clip 21 and compressed by the pressure between the cantilever 12 and the upper clip 21. By adopting the connection mode, the disassembly and assembly convenience between the cantilever 12 and the upper chuck 21 can be improved, and the matching and separating operation between the first clamping block 211 and the second clamping block 212 can be realized more conveniently. Meanwhile, under the compression action of the load, the connection reliability between the cantilever 12 and the upper chuck 21 can be ensured.
As shown in fig. 2 and 6, the driving module 3 includes a cylinder or an electric cylinder disposed on the frame 4. Under the test state, the rotating arm 22, the rack 4 and the air cylinder jointly form a crank connecting rod slider 15 mechanism, and the synchronous reciprocating rotation of the rotating part of the rotating arm 22 and the rotating part of the test sample 5 can be realized through the inflation and deflation of the air cylinder, so that the motion working condition of the hinge pair is simulated.
Specifically, as shown in fig. 3 and 5, the rotating arms 22 are arranged in one-to-one correspondence with the mounting plate 14 and are arranged outside the mounting plate 14, the intermediate rod 23 is arranged between the two rotating arms 22, and the air cylinder is connected with the intermediate rod 23 and drives the intermediate rod 23 and the two rotating arms 22 to synchronously swing.
Before testing, a proper test sample 5 is selected, one of two opposite rotating pieces in a hinge pair of the test sample 5 is used as a fixing piece and is connected with a fixed clamping position of an upper chuck 21, the other part in the hinge pair is used as a rotating piece and is connected with a rotating clamping position of a rotating arm 22, and the rotating piece is arranged in a rod piece mode.
And then adjusting a load unit, wherein the load of the load unit is transmitted to the test sample 5 on the clamping module 2 in a lever mode through the cantilever 12 and acts on a rotating pair between the fixed part and the rotating part to simulate the load condition of the hinge pair in the actual use process.
And finally, the driving module 3 drives the rotating arm 22 and the rotating piece to synchronously rotate back and forth relative to the fixed piece, so that the motion working condition of the hinge pair in the actual use process is simulated.
By adopting the hinge pair abrasion testing machine, the actual use working condition of the hinge pair can be well simulated, so that more real test data can be obtained, and more reliable basis is provided for the abrasion life of the hinge pair.
As shown in fig. 2, fig. 3 and fig. 9, further, a support beam 41 is further disposed on the frame 4, and the support beam 41 is disposed perpendicular to the shaft hole; the rotation support 13 is disposed on the support beam 41, and the suspension arm 12 extends in the same direction as the support beam 41. During the rotation of the boom 12, the boom 12 is always in the same plane as the support beam 41.
The support beam 41 may be used to mount the rotary support 13, carrying the rotary support 13, the boom 12 and the additional load 17. Meanwhile, since the cantilever 12 and the supporting beam 41 extend in the same direction, when the constraint at the end of the cantilever 12 corresponding to the upper chuck 21 is released, that is, during the process of assembling and disassembling the test sample 5, the cantilever 12 can rotate to contact with the supporting beam 41, and the cantilever 12 is temporarily supported by the supporting beam 41, so that the rotation range of the cantilever 12 is limited, and the assembling and disassembling operation of the test sample 5 is facilitated.
The cantilever 12 and the rotary support 13 may optionally be connected in an articulated manner. As shown in fig. 3 and 9, another specific embodiment is provided in the drawings of the present application, namely, a bottom groove 121 with a circular arc shape is formed on the cantilever 12, and the top of the rotary support 13 is provided as a circular arc-shaped support surface matched with the bottom groove 121. During the test, the cantilever 12 is placed on the rotating support 13, no other constraint is imposed between the cantilever 12 and the rotating support 13, and the cantilever 12 and the weight of the load are compressed only by the cooperation of the bottom groove 121 and the supporting surface. In this way, not only the rotation and the spacing between the cantilever 12 and the rotary support 13 can be ensured, but also the separation of the cantilever 12 from the rotary support 13 can be facilitated.
Further, as shown in fig. 8, the load unit includes a load bracket 11, and the load bracket 11 is connected to the cantilever 12; the load support 11 is provided with a loading position 111. The self weight of the load bracket 11 can be used as the load, and the load 17 can be added on the loading position 111 of the load bracket 11, and the preset load value of the hinge pair can be adjusted by increasing or decreasing the total amount of the load bracket 11 and the additional load 17. The additional load 17 is in the form of a hook mounted on the load bit 111.
As shown in fig. 8, a guide rail 16 is disposed on the suspension arm 12 along the length direction, the load bracket 11 includes a slider 15, and the slider 15 is slidably connected to the guide rail 16. The load support 11 and the additional load 17 can slide along the length direction of the cantilever 12, and the preset load value of the hinge pair can be adjusted by adjusting the arm of force of the load. The guide rail 16 can be provided with scales, so that the position of the sliding block 15 can be judged more visually.
The abrasion test method is specifically explained by taking a special type of hinge pair large-pitch chain as an example.
The abrasion test method for the large-pitch chain adopts the hinge pair abrasion tester and at least comprises the following steps:
step one, selecting a test sample: as shown in fig. 1, a single inner link 30 and at least one pin 20 are selected, and the pin 20 and the inner link 30 are connected to form a test sample 5;
step two, installing a test sample: the pin shaft 20 is rotatably and movably connected with the shaft hole and is connected with the rotating arm 22, so that the rotating arm 22 and the pin shaft 20 are limited to rotate synchronously; the inner chain link 30 is connected with the upper clamp 21; i.e. the state shown in fig. 6 and 7;
step three, load adjustment: adjusting the dead weight of the load cell, and/or the position of the load cell relative to the cantilever 12, to apply a predetermined load to the test sample 5;
step four, operating the equipment: the drive module 3 is operated and the rotating arm 22 and the pin 20 are reciprocated relative to the inner link 30 for wear testing.
By adopting the abrasion test method, the rotation movement working condition between the inner chain link 30 and the pin shaft 20 when the chain runs can be well simulated, so that accurate abrasion data can be obtained, and a reliable basis is provided for the abrasion life evaluation of the chain.
Further, in order to further acquire the wear data between the outer link plates 10 and the inner links 30, in the first step, two outer link plates 10 are included in the test sample 5, and are connected with the pin shaft 20 and rotate synchronously.
In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A hinge pair abrasion tester is characterized by at least comprising:
the device comprises a rack, a positioning device and a control device, wherein the rack comprises a mounting seat, and a shaft hole is formed in the mounting seat;
the clamping module comprises an upper clamping head and a rotating arm, wherein a fixed clamping position is arranged on the upper clamping head, and a rotating clamping position is arranged on the rotating arm;
the loading module comprises a cantilever and a rotary supporting part, the rotary supporting part is arranged on the rack, and the cantilever is rotatably and movably connected with the rotary supporting part; one end of the cantilever is connected with the upper chuck, and the other end of the cantilever is provided with a load unit;
a driving module for driving the motor and the motor,
during testing, the upper chuck clamps the fixed part of the hinge pair, the rotating arm is connected with the movable part of the hinge pair and limited to synchronously rotate with the movable part of the hinge pair, and the driving module drives the rotating arm to rotate relative to the mounting seat.
2. The hinge pair abrasion tester according to claim 1, wherein: the mounting seat comprises two mounting plates which are arranged in parallel, shaft holes are respectively arranged on the two mounting plates, and the two shaft holes are coaxially arranged; a clamping space is formed between the two mounting plates.
3. The hinge pair abrasion tester according to claim 2, wherein: the rotary arms are arranged in one-to-one correspondence with the mounting plate and arranged outside the mounting plate, the middle rod is arranged between the two rotary arms, and the air cylinder is connected with the middle rod and drives the middle rod and the two rotary arms to synchronously swing.
4. The hinge pair abrasion tester according to claim 1, wherein: the rack is also provided with a support beam, and the support beam is perpendicular to the shaft hole;
the rotary supporting part is arranged on the supporting beam, and the cantilever and the supporting beam extend in the same direction.
5. The hinge pair abrasion tester according to claim 1, wherein: the upper chuck comprises a first clamping block and a second clamping block, and the first clamping block and the second clamping block are arranged in a split manner;
the first clamping block and the second clamping block are respectively provided with a clamping groove, and the two clamping grooves are oppositely arranged and jointly enclose a fixed clamping position.
6. The hinge pair abrasion tester according to claim 5, wherein: the first clamping block and the second clamping block are respectively provided with a mounting hole, and the cantilever is sequentially inserted into the two mounting holes.
7. The hinge pair abrasion tester according to claim 1, wherein: the rotating arm is provided with a key-free bushing.
8. The hinge pair abrasion tester according to claim 1, wherein: the driving module comprises an air cylinder arranged on the frame.
9. The hinge pair abrasion tester according to any one of claims 1 to 8, wherein: the load unit comprises a load bracket, and the load bracket is connected with the cantilever; and the load support is provided with a loading position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221321064.8U CN217716899U (en) | 2022-05-30 | 2022-05-30 | Hinge pair abrasion tester |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221321064.8U CN217716899U (en) | 2022-05-30 | 2022-05-30 | Hinge pair abrasion tester |
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| CN217716899U true CN217716899U (en) | 2022-11-01 |
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| CN202221321064.8U Active CN217716899U (en) | 2022-05-30 | 2022-05-30 | Hinge pair abrasion tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115165349A (en) * | 2022-05-30 | 2022-10-11 | 杭州自强链传动有限公司 | Hinge pair abrasion testing machine and abrasion testing method for large-pitch chain |
-
2022
- 2022-05-30 CN CN202221321064.8U patent/CN217716899U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115165349A (en) * | 2022-05-30 | 2022-10-11 | 杭州自强链传动有限公司 | Hinge pair abrasion testing machine and abrasion testing method for large-pitch chain |
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