CN220690449U - Fatigue resistance testing device for plastic gear - Google Patents
Fatigue resistance testing device for plastic gear Download PDFInfo
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- CN220690449U CN220690449U CN202322107804.9U CN202322107804U CN220690449U CN 220690449 U CN220690449 U CN 220690449U CN 202322107804 U CN202322107804 U CN 202322107804U CN 220690449 U CN220690449 U CN 220690449U
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- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 17
- 238000009661 fatigue test Methods 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 6
- 238000013459 approach Methods 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses a fatigue resistance testing device of a plastic gear, which comprises a mounting shaft, a supporting seat, a spacing adjusting device, a rotary driving device and a tensioning device, wherein the mounting shaft is connected with the supporting seat; the mounting shaft is rotatably arranged on the supporting seat and is provided with a spacing adjusting device; the rotary driving device controls the mounting shaft to rotate; the mounting shaft is provided with a supporting plate for supporting the plastic gear; the tensioning device comprises a tensioning block, a movable block, a linkage mechanism and a linear driving assembly; the tensioning blocks are arranged in three and are movably arranged along the radial direction of the mounting shaft so as to be abutted against the inner wall of the inner hole of the plastic gear; the movable block is movably arranged along the axis of the mounting shaft; the two ends of the linkage structure are respectively connected with the tensioning block and the movable block in a transmission way so as to drive the tensioning block to move by means of the movement of the movable block; the linear driving device is connected with the movable block to control the movement of the movable block. The utility model solves the problem of how to mount gears with different inner hole diameters and perform fatigue resistance test on the gears.
Description
Technical Field
The utility model relates to the technical field of plastic gear production and processing, in particular to a fatigue resistance testing device for a plastic gear.
Background
In reality, the plastic gear produced by the factory is subjected to fatigue resistance test before being formally sold so as to ensure the qualification of the produced plastic gear.
Chinese patent CN218847627U discloses a fatigue resistance testing device for plastic gear, which is provided with a testing module and a driving module, wherein the driving module drives a pair of mounting rods on the testing module to horizontally move simultaneously, the testing plastic gear is mounted on the mounting rods, the driving module controls the pair of mounting rods to approach, so that the plastic gear is meshed, and a rotary driver on the testing module drives the mounting rods to rotate, so as to drive the plastic gear to rotate, thereby completing the fatigue test of the plastic gear.
The fatigue resistance testing device can effectively perform fatigue tests on plastic gears with different outer diameters, but the sizes of the gears are quite large, and the fatigue resistance testing device cannot perform fatigue tests on plastic gears with different inner hole diameters.
There is a need for improvements over the prior art.
Disclosure of Invention
According to the fatigue resistance testing device for the plastic gear, the inner wall of the plastic gear is tensioned through the tensioning device arranged on the mounting shaft, so that the problem that the fatigue resistance testing device for the plastic gear is used for mounting and testing fatigue of different plastic gears is solved.
In order to solve the problems in the prior art, the novel technical scheme adopted in the use is as follows;
a fatigue resistance testing device of a plastic gear comprises a mounting shaft, a supporting seat, a spacing adjusting device, a rotary driving device and a tensioning device; the mounting shafts are rotatably arranged on the supporting seat, the mounting shafts are provided with a pair of mounting shafts and are arranged in parallel at intervals, and the interval adjusting device is used for adjusting the interval between the pair of mounting shafts; the rotary driving device is used for controlling the rotation of the mounting shaft; the mounting shaft is provided with a supporting plate for supporting the plastic gear; the installation shaft penetrates through the inner hole of the plastic gear in the working state; the tensioning device comprises a tensioning block, a movable block, a linkage mechanism and a linear driving assembly; the tensioning blocks are arranged in three and are movably arranged along the radial direction of the mounting shaft so as to be abutted against the inner wall of the inner hole of the plastic gear; the movable block is movably arranged along the axis of the mounting shaft; the two ends of the linkage structure are respectively connected with the tensioning block and the movable block in a transmission way so as to drive the tensioning block to move by means of the movement of the movable block; the linear driving device is connected with the movable block to control the movement of the movable block.
Preferably, the linkage mechanism comprises an inclined slide block; the inclined sliding blocks are arranged on the movable block, are uniformly distributed around the axis of the movable block, and are in one-to-one correspondence with the tensioning blocks; the inclined sliding block is provided with a first inclined surface, the tensioning block is provided with a second inclined surface, and a sliding rail and a sliding groove which enable the first inclined surface and the second inclined surface to be always attached are respectively arranged between the first inclined surface and the second inclined surface; the sliding groove and the sliding rail are dovetail-shaped; the sliding groove is connected with the sliding rail in a sliding way; the first inclined plane drives the second inclined plane to move along the radial direction of the mounting shaft when moving along the axis direction of the mounting shaft.
Preferably, the linear drive assembly comprises a screw; the screw rod is rotatably arranged on the mounting shaft and is coaxially arranged with the mounting shaft; the movable block is in threaded connection with the screw rod; one end of the screw rod is connected with the linear driving assembly.
Preferably, the top end of the screw rod is provided with a butt joint groove; the cross section of the butt joint groove is polygonal.
Preferably, the fatigue resistance testing device further comprises a clamping component for limiting the rotation of the mounting shaft to adjust the tensioning device and a box body for mounting the mounting shaft; the clamping assembly comprises a movable pin and a positioning hole; the positioning hole is formed in the outer wall of the mounting shaft; the movable pin is arranged at one side of the mounting shaft and is movably arranged along the radial direction of the mounting shaft, the box body is provided with a through hole, and the movable pin is in clearance fit with the through hole; in the locking state, the movable pin is in plug-in fit with the positioning hole.
Preferably, the rotary driving device comprises a servo motor; the servo motor is installed on the supporting seat, and the motor shaft of the servo motor is fixedly connected with the installation shaft in a coaxial mode.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, through the tensioning device arranged on the mounting shaft, gears with different inner diameters can be mounted, so that the device is convenient to detach and mount, simple in structure and convenient to operate.
2. According to the utility model, through the sliding groove and the sliding rail between the inclined sliding block and the tensioning block, the axial movement of the inclined sliding block drives the radial movement of the tensioning block, and the sliding groove and the sliding rail are dovetail-shaped, so that the structure is stable and the sliding block is not easy to fall off.
3. The movable block has certain self-locking capability and stable structure by arranging the threaded connection of the screw rod and the movable block.
Drawings
Fig. 1 is a perspective view of a fatigue resistance testing device for a plastic gear.
Fig. 2 is a schematic perspective view of the plastic gear fatigue resistance testing device after hiding the case in fig. 1.
Fig. 3 is a left side view of a fatigue resistance testing device for a plastic gear.
FIG. 4 is a cross-sectional view of B-B in FIG. 3 of a fatigue resistance testing device for plastic gears.
Fig. 5 is an enlarged view of a portion of the fatigue resistance testing device of the plastic gear at C in fig. 4.
Fig. 6 is an enlarged view of a portion of the fatigue resistance testing device of the plastic gear at a in fig. 2.
Fig. 7 is an internal perspective view of fig. 6 of a fatigue resistance testing device for plastic gears.
Fig. 8 is a perspective view of a tensioning block of a fatigue resistance testing device for a plastic gear.
Fig. 9 is a perspective view of a movable block of a fatigue resistance testing device for a plastic gear.
The reference numerals in the figures are:
1-mounting a shaft; 11-supporting plates; 2-a supporting seat; 3-pitch adjustment means; 4-a rotary drive; 41-a servo motor; 5-tensioning means; 51-tensioning blocks; 52-a movable block; 53-linkage mechanism; 531-inclined slide block; 532—a first ramp; 533-second ramp; 534-chute; 535-a slide rail; 54-linear drive assembly; 541-a screw rod; 542-docking slots; 6-clamping assembly; 61-a movable pin; 62-positioning holes.
Detailed Description
The utility model will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the utility model and the specific objects and functions achieved.
Referring to fig. 1-9: a fatigue resistance testing device of a plastic gear comprises a mounting shaft 1, a supporting seat 2, a spacing adjusting device 3, a rotary driving device 4 and a tensioning device 5; the mounting shafts 1 are rotatably arranged on the supporting seat 2, the mounting shafts 1 are provided with a pair of mounting shafts and are arranged in parallel at intervals, and the interval adjusting device 3 is used for adjusting the interval between the pair of mounting shafts 1; the rotation driving device 4 is used for controlling the rotation of the mounting shaft 1; a supporting plate 11 for supporting the plastic gear is arranged on the mounting shaft 1; the installation shaft 1 penetrates through an inner hole of the plastic gear in the working state; the tensioning device 5 comprises a tensioning block 51, a movable block 52, a linkage mechanism 53 and a linear driving assembly 54; the tensioning blocks 51 are three, and the tensioning blocks 51 are movably arranged along the radial direction of the mounting shaft 1 and used for abutting against the inner wall of the inner hole of the plastic gear; the movable block 52 is movably arranged along the axis of the mounting shaft 1; the two ends of the linkage structure are respectively connected with the tensioning block 51 and the movable block 52 in a transmission way so as to drive the tensioning block 51 to move by means of the movement of the movable block 52; a linear drive is coupled to the movable block 52 to control movement of the movable block 52.
When the plastic gear needs to be detected, the distance adjusting device 3 controls the pair of mounting shafts 1 to be away from each other. The mounting shaft 1 is passed through the inner bore of the plastic gear and the plastic gear is then placed on the pallet 11. The linear driving device is started, the movable block 52 is controlled to move along the axis of the mounting shaft 1, and then the three tensioning blocks 51 are driven by the linkage mechanism 53 to expand outwards along the radial direction of the mounting shaft 1, so that the inner wall of the inner hole of the plastic gear is abutted, and the plastic gear is fixed on the mounting shaft 1. The pair of mounting shafts 1 are controlled to approach each other by the spacing adjusting means 3 so that the pair of plastic gears are engaged with each other. The installation shaft 1 on the supporting seat 2 is driven to rotate by the rotary driving device 4, and then the plastic gear is driven to rotate so as to perform fatigue test of the plastic gear. The distance adjusting device 3 in the middle of the figure can adjust the distance of the installation shaft 1 by adjusting the distance of the supporting seat 2, and can directly control the distance change of the installation shaft 1 in other ways, which is the prior art and is not described herein.
Referring to fig. 2, 7, 8 and 9: the inclined sliding blocks 531 are arranged on the movable block 52, the inclined sliding blocks 531 are uniformly distributed around the axis of the movable block 52, and the inclined sliding blocks 531 correspond to the tensioning blocks 51 one by one; the inclined slide block 531 is provided with a first inclined plane 532, the tensioning block 51 is provided with a second inclined plane 533, and a slide rail 535 and a slide groove 534 which enable the first inclined plane 532 and the second inclined plane 533 to be always attached are respectively arranged between the first inclined plane 532 and the second inclined plane 533; the runner 534 and the slide 535 are dovetail shaped; chute 534 is slidably coupled to slide 535; the first inclined surface 532 moves along the axial direction of the mounting shaft 1 to drive the second inclined surface 533 to move along the radial direction of the mounting shaft 1.
The first inclined plane 532 and the second inclined plane 533 are arranged between the inclined slide block 531 and the tensioning block 51, the sliding rail 535 and the sliding groove 534 are arranged between the first inclined plane 532 and the second inclined plane 533 to be in sliding connection, so that the axial movement of the inclined slide block 531 on the movable block 52 drives the tensioning block 51 to move radially, the sliding rail 535 and the sliding groove 534 can exchange positions on the first inclined plane 532 and the second inclined plane 533, the sliding groove 534 and the sliding rail 535 are dovetail-shaped, and the dovetail-shaped sliding groove 534 and the sliding rail 535 enable the inclined slide block 531 to be connected with the tensioning block 51 better and not easy to fall off.
Referring to fig. 2, 6 and 7: the screw 541 is rotatably disposed on the mounting shaft 1 and coaxially disposed with the mounting shaft 1; the movable block 52 is in threaded connection with the screw rod 541; one end of the screw 541 is connected to the linear driving assembly 54.
A through hole is formed in the middle of the movable block 52, a nut is fixedly embedded in the through hole, the threaded connection between the movable block 52 and the screw 541 is realized through the connection between the nut and the screw 541, and the movable block 52 can be directly in threaded connection with the screw 541 through a through screw hole formed in the movable block 52. The two ends of the installation shaft 1 are provided with end covers to install the screw 541 so as to realize the rotation setting of the screw 541, and the connection part of the screw 541 and the end covers can also improve the smoothness of the rotation of the screw 541 by arranging bearings. The movable block 52 is driven by the screw rod 541 to have a certain self-locking effect, so that the movable block 52 is prevented from unnecessarily moving, and the tensioning block 51 is loosened.
Referring to fig. 7: the docking slot 542 has a polygonal cross section.
The screw rod 541 can be conveniently and manually controlled to rotate by inserting the head part into the butt joint groove 542 with the hand wheel with the shape matched with the shape of the butt joint groove 542, and the labor cost can be further saved by the electric hand wheel.
Referring to fig. 1 and 2: the detent assembly 6 includes a movable pin 61 and a positioning hole 62; the positioning hole 62 is formed on the outer wall of the mounting shaft 1; the movable pin 61 is arranged on one side of the installation shaft 1 and is movably arranged along the radial direction of the installation shaft 1, the box body is provided with a through hole, and the movable pin 61 is in clearance fit with the through hole; in the locked state, the movable pin 61 and the positioning hole 62 are in plug-in fit.
The installation shaft 1 is subjected to plug-in matching through the clamping component 6, the clamping component 6 is arranged in the box body, the installation shaft 1 is installed in the box body, a through hole for supporting the movable pin 61 is formed in the box body, the movable pin 61 penetrates through the through hole and the through hole in clearance fit, a positioning hole 62 is formed in the outer wall of the installation shaft 1, the movable pin 61 is coaxially aligned with the positioning hole 62, the movable pin 61 is pushed to be in plug-in matching with the positioning hole 62 during locking, rotation of the installation shaft 1 is limited, the tensioning device 5 can tension a plastic gear better conveniently, and the movable pin 61 is pulled out during separation to restore rotation of the installation shaft 1.
Referring to fig. 2 and 4: the servo motor 41 is arranged on the supporting seat 2, and a motor shaft of the servo motor 41 is fixedly connected with the mounting shaft 1 in a coaxial manner.
The supporting seat 2 plays a role in supporting the servo motor 41, and a motor shaft of the servo motor 41 is coaxially and fixedly connected with the mounting shaft 1 through a coupler.
The foregoing examples merely illustrate one or more embodiments of the utility model, which are described in greater detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (6)
1. A fatigue resistance testing device of a plastic gear comprises a mounting shaft (1), a supporting seat (2), a spacing adjusting device (3), a rotary driving device (4) and a tensioning device (5); the mounting shafts (1) are rotatably arranged on the supporting seat (2), the mounting shafts (1) are arranged in a pair at intervals and are arranged in parallel, and the spacing adjusting device (3) is used for adjusting the spacing between the pair of mounting shafts (1); the rotary driving device (4) is used for controlling the rotation of the mounting shaft (1); a supporting plate (11) for supporting the plastic gear is arranged on the mounting shaft (1); the installation shaft (1) penetrates through the inner hole of the plastic gear in the working state;
the tensioning device (5) is characterized by comprising a tensioning block (51), a movable block (52), a linkage mechanism (53) and a linear driving assembly (54);
the tensioning blocks (51) are three, and the tensioning blocks (51) are movably arranged along the radial direction of the mounting shaft (1) and used for abutting against the inner wall of the inner hole of the plastic gear;
the movable block (52) is movably arranged along the axis of the mounting shaft (1);
the two ends of the linkage structure are respectively connected with the tensioning block (51) and the movable block (52) in a transmission way so as to drive the tensioning block (51) to move by means of the movement of the movable block (52);
the linear driving device is connected with the movable block (52) to control the movement of the movable block (52).
2. A fatigue resistance testing device for plastic gears according to claim 1, characterized in that the linkage mechanism (53) comprises an inclined slide block (531);
the inclined sliding blocks (531) are arranged on the movable blocks (52), the inclined sliding blocks (531) are uniformly distributed around the axis of the movable blocks (52), and the inclined sliding blocks (531) are in one-to-one correspondence with the tensioning blocks (51); a first inclined plane (532) is arranged on the inclined sliding block (531), a second inclined plane (533) is arranged on the tensioning block (51), and a sliding rail (535) and a sliding chute (534) which enable the first inclined plane (532) and the second inclined plane (533) to be always attached are respectively arranged between the first inclined plane (532) and the second inclined plane (533); the sliding chute (534) and the sliding rail (535) are dovetail-shaped; the chute (534) is in sliding connection with the slide rail (535); the first inclined surface (532) drives the second inclined surface (533) to move along the radial direction of the mounting shaft (1) when moving along the axial direction of the mounting shaft (1).
3. A fatigue resistance testing device for plastic gears according to claim 2, wherein the linear drive assembly (54) comprises a screw (541);
the screw rod (541) is rotatably arranged on the mounting shaft (1) and is coaxially arranged with the mounting shaft (1); the movable block (52) is in threaded connection with the screw rod (541); one end of the screw rod (541) is connected to the linear driving assembly (54).
4. A fatigue resistance testing device for plastic gears according to claim 3, wherein the top end of the screw rod (541) is provided with a butt joint groove (542);
the cross section of the butt joint groove (542) is polygonal.
5. A fatigue testing device for plastic gears according to claim 1, characterized in that the fatigue testing device further comprises a detent assembly (6) limiting the rotation of the mounting shaft (1) for adjustment of the tensioning device (5) and a housing for mounting the mounting shaft (1);
the clamping assembly (6) comprises a movable pin (61) and a positioning hole (62);
the positioning hole (62) is formed in the outer wall of the mounting shaft (1);
the movable pin (61) is arranged on one side of the installation shaft (1) and is movably arranged along the radial direction of the installation shaft (1), the box body is provided with a through hole, and the movable pin (61) is in clearance fit with the through hole;
in the locking state, the movable pin (61) is in plug-in fit with the positioning hole (62).
6. A fatigue resistance testing device for plastic gears according to claim 1, characterized in that the rotary driving means (4) comprises a servo motor (41);
the servo motor (41) is arranged on the supporting seat (2), and a motor shaft of the servo motor (41) is fixedly connected with the mounting shaft (1) in a coaxial way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322107804.9U CN220690449U (en) | 2023-08-07 | 2023-08-07 | Fatigue resistance testing device for plastic gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322107804.9U CN220690449U (en) | 2023-08-07 | 2023-08-07 | Fatigue resistance testing device for plastic gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220690449U true CN220690449U (en) | 2024-03-29 |
Family
ID=90403300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322107804.9U Active CN220690449U (en) | 2023-08-07 | 2023-08-07 | Fatigue resistance testing device for plastic gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220690449U (en) |
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2023
- 2023-08-07 CN CN202322107804.9U patent/CN220690449U/en active Active
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