CN219348122U - Spring life test equipment - Google Patents
Spring life test equipment Download PDFInfo
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- CN219348122U CN219348122U CN202223472847.9U CN202223472847U CN219348122U CN 219348122 U CN219348122 U CN 219348122U CN 202223472847 U CN202223472847 U CN 202223472847U CN 219348122 U CN219348122 U CN 219348122U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model provides a spring life test device, which belongs to the field of test tools and comprises: the fixing frame is connected with the first end of the spring to be tested; the movable frame is used for being connected with the second end of the spring to be tested, is movably arranged in a direction away from or close to the fixed frame, and is provided with a stretching position for enabling the spring to be tested to be in a maximum stretching state and an initial position for enabling the spring to be tested to be in an un-stretching force bearing state; and the driving device is in driving connection with the movable frame so as to drive the movable frame to reciprocate between the initial position and the stretching position. The spring life testing equipment is simple in structure and low in cost, and solves the problem that a method for testing the life of a spring in the prior art is high in cost.
Description
Technical Field
The utility model relates to the field of test tools, in particular to spring life test equipment.
Background
The spring is an elastic element which can be elastically deformed to a large extent under load. The spring is widely applied to various machines, and can control the movement of a mechanism, such as a brake and a control spring in a clutch; damping and cushioning, such as damper springs under automobiles, railway carriages; store and output energy, such as clock springs, etc.; the force is measured, such as a force measuring device, a spring in a spring balance, and the like.
In industrial robots, the spring, which is a part of the machine, is used very frequently, mainly for storing and outputting energy. However, the number of uses of the spring is limited, and in order to know how many times it can be used, it is necessary to test the number of uses (spring life) thereof.
At present, when testing the service life of a mechanical spring used on a large-load industrial robot, a complete machine is generally adopted for testing. However, the mechanical spring life test in the prior art uses too much material and is too costly.
Disclosure of Invention
The utility model mainly aims to provide a spring life test device which is used for solving the problem that a method for testing the life of a spring in the prior art is high in cost.
In order to achieve the above object, according to one aspect of the present utility model, there is provided a spring life test apparatus comprising: the fixing frame is used for being connected with the first end of the spring to be tested; the movable frame is used for being connected with the second end of the spring to be tested, is movably arranged in a direction away from or close to the fixed frame, and is provided with a stretching position for enabling the spring to be tested to be in a maximum stretching state and an initial position for enabling the spring to be tested to be in an un-stretching force bearing state; the driving device is in driving connection with the movable frame so as to drive the movable frame to reciprocate between the initial position and the stretching position, and the service life of the spring to be tested is tested by recording the number of times that the spring to be tested stretches to the maximum stretching state.
Further, the spring life test apparatus further includes: a test bench; the sliding assembly comprises a sliding rail and a sliding block, the sliding rail is arranged on the test bench and extends along the moving direction of the movable frame, the sliding block is slidably arranged on the sliding rail, and the movable frame is connected with the sliding block.
Further, the movable frame includes: the connecting plate is connected with the sliding block; the two first support plates are arranged at intervals and are connected with the connecting plate; the first installation rod, the both ends of first installation rod respectively with two first backup pad is connected, first installation rod is used for inserting the second end of establishing the spring that awaits measuring.
Further, the sliding components are multiple, and the sliding components are arranged in parallel.
Further, the spring life test apparatus further includes: a fixed table; the fixing frame comprises a fixing seat, two second supporting plates and a second mounting rod, wherein the two second supporting plates are connected with the fixing seat, two ends of the second mounting rod are connected with the two second supporting plates respectively, and the second mounting rod is used for penetrating through the first end of the spring to be tested.
Further, the driving device comprises a driving motor and a speed reducer, and the driving motor is connected with the speed reducer; the speed reducer is connected with the transmission rod group through an output shaft, and the transmission rod group is connected with the movable frame so as to drive the movable frame to move through the transmission rod group.
Further, the transmission rod group comprises a crank rod and a side link, wherein the first end of the crank rod is connected with the output shaft so as to drive the crank rod to rotate through the output shaft; one end of the side link is connected with the second end of the crank rod, and the other end of the side link is connected with the movable frame; and/or the spring life testing equipment further comprises a support column, wherein the output shaft is rotatably arranged on the support column in a penetrating way, so that the output shaft is supported by the support column.
Further, the driving device comprises a driving piston cylinder, and a piston rod of the driving piston cylinder is connected with the movable frame so as to push and pull the movable frame through the expansion and the contraction of the piston rod.
Further, the spring life test apparatus further includes: the timing device is connected with the driving device to obtain the stretching times of the spring to be tested by recording the working time of the driving device; and/or a position detection device and a counting device, wherein the position detection device is matched with the movable frame or the second end of the spring to be tested so as to detect whether the movable frame moves to the stretching position; the counting device is connected with the position detection device to record the number of times the movable frame moves to the stretching position according to the detection result of the position detection device.
Further, the spring life test apparatus further includes: the device comprises a mounting table and a mounting frame, wherein the mounting frame is mounted on the mounting table, and the driving device is mounted on the mounting frame; and/or a first limiting part and a second limiting part, wherein the first limiting part is arranged at the initial position, and the second limiting part is arranged at the stretching position, so that the movable frame is limited at the initial position and the stretching position respectively through the first limiting part and the second limiting part.
According to the spring life testing equipment, two ends of a spring to be tested are respectively connected with a fixed frame and a movable frame, the movable frame is driven by a driving device to reciprocate between an initial position where the spring to be tested is not subjected to stretching force and a stretching position where the spring to be tested is in a maximum stretching state, so that the spring to be tested stretches and retracts, and the life of the spring to be tested is tested by recording the number of times that the spring to be tested stretches to the maximum stretching state; therefore, the spring life testing equipment of the utility model can realize the stretching of the spring to be tested by simply arranging the fixed frame, the movable frame and the driving device, and further test the life of the spring to be tested by recording the times that the spring to be tested stretches to the maximum stretching state; therefore, the spring life test equipment is simple in structure and low in cost, and the problem that the method for testing the life of the spring in the prior art is high in cost is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:
FIG. 1 shows a schematic structural view of an embodiment of a spring life testing apparatus according to the present utility model;
wherein the above figures include the following reference numerals:
1. a fixing frame; 100. a fixing seat; 101. a second support plate; 102. a second mounting bar; 2. a spring to be tested; 3. a movable frame; 301. a connecting plate; 302. a first support plate; 303. a first mounting bar; 4. a driving device; 400. a driving motor; 401. a speed reducer; 402. a drive rod group; 403. a crank lever; 404. a side link; 405. an output shaft; 406. a connecting plate; 5. a mounting table; 6. a mounting frame; 601. a first plate body; 602. a second plate body; 7. a support column; 8. a sliding assembly; 801. a slide rail; 802. a slide block; 9. a test bench; 10. a fixed table.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1, the present utility model provides a spring life testing apparatus, comprising: the fixing frame 1 is used for being connected with the first end of the spring 2 to be tested; a movable frame 3, the movable frame 3 is used for being connected with the second end of the spring 2 to be tested, the movable frame 3 is movably arranged along the direction far away from or near to the fixed frame 1, the movable frame 3 is provided with a stretching position for enabling the spring 2 to be tested to be in a maximum stretching state and an initial position for enabling the spring 2 to be tested to be in an un-stretching force; the driving device 4 is in driving connection with the movable frame 3 to drive the movable frame 3 to reciprocate between an initial position and a stretching position, so as to test the service life of the spring 2 to be tested by recording the number of times that the spring 2 to be tested stretches to a maximum stretching state.
The utility model provides a spring life test device, comprising: the spring to be tested comprises a fixed frame 1, a spring to be tested 2, a movable frame 3 and a driving device 4, wherein the first end of the spring to be tested 2 is connected with the fixed frame 1; the second end of the spring 2 to be tested is connected with a movable frame 3, the movable frame 3 is movably arranged along the direction far away from or near to the fixed frame 1, and the movable frame 3 is provided with a stretching position for enabling the spring 2 to be tested to be in a maximum stretching state and an initial position for enabling the spring 2 to be tested to be in an un-stretching force; the driving device 4 is in driving connection with the movable frame 3, the driving device 4 drives the movable frame 3 to reciprocate between an initial position where the spring 2 to be tested is not subjected to stretching force and a stretching position where the spring 2 to be tested is in a maximum stretching state, and the spring 2 to be tested is driven to stretch or retract through the reciprocating motion of the movable frame 3, so that the service life of the spring 2 to be tested is tested by recording the number of times that the spring 2 to be tested stretches to the maximum stretching state. Therefore, the spring life test equipment is convenient to stretch the spring 2 to be tested by simply arranging the fixed frame 1, the movable frame 3 and the driving device 4, and further tests the life of the spring 2 to be tested by recording the number of times that the spring 2 to be tested stretches to the maximum stretching state.
In this embodiment, as shown in fig. 1, the spring life test apparatus further includes: a test bench 9 and a sliding assembly 8, the sliding assembly 8 being mounted on the test bench 9; the sliding assembly 8 comprises a sliding rail 801 and a sliding block 802, wherein the sliding rail 801 is arranged on the test bench 9 and extends along the moving direction of the movable frame 3, the sliding block 802 is slidably arranged on the sliding rail 801, and the movable frame 3 is connected with the sliding block 802; the sliding block 802 reciprocates on the sliding rail 801, so that the movable frame 3 is driven to reciprocate between an initial position where the spring 2 to be tested is not subjected to stretching force and a stretching position where the spring 2 to be tested is in a maximum stretching state, and the movable frame 3 reciprocates to drive the spring 2 to be tested to stretch or retract, so that the service life of the spring 2 to be tested is tested by recording the number of times that the spring 2 to be tested stretches to the maximum stretching state.
Specifically, the number of the sliding assemblies 8 is plural, and the plural sliding assemblies 8 are arranged in parallel. Preferably, the number of slide assemblies 8 is two.
The specific structure of the movable frame 3 in this embodiment is, as shown in fig. 1, that the movable frame 3 includes: a connection plate 301, two first support plates 302, and a first mounting bar 303, the connection plate 301 being connected to the slider 802; the two first support plates 302 are arranged at intervals, and the two first support plates 302 are connected with the connecting plate 301; the two ends of the first mounting rod 303 are respectively connected with two first support plates 302, and the first mounting rod 303 is used for being inserted into the second end of the spring 2 to be tested.
In this embodiment, as shown in fig. 1, 2 sliding assemblies 8 are provided, 2 sliding assemblies 8 are arranged in parallel, the number of sliding rails 801 and sliding blocks 802 in each sliding assembly 8 is one, and two ends of the connecting plate 301 are detachably connected with two sliding blocks 802 respectively.
Preferably, both ends of the connection plate 301 are respectively connected with the slider 802 by a plurality of bolts, so that the connection plate 301 and the slider 802 can be firmly connected. The sliding block 802 reciprocates on the sliding rail 801 to drive the connecting plate 301, the two first supporting plates 302 and the first mounting rod 303 to reciprocate between an initial position where the spring 2 to be tested is not subjected to stretching force and a stretching position where the spring 2 to be tested is in a maximum stretching state, so that the first mounting rod 303 drives the spring 2 to be tested to stretch or retract, and the service life of the spring 2 to be tested is tested by recording the number of times that the spring 2 to be tested stretches to the maximum stretching state.
In this embodiment, as shown in fig. 1, the driving device 4 includes a driving motor 400, a speed reducer 401, a transmission rod group 402, and an output shaft 405, and the driving motor 400 is connected to the speed reducer 401; the speed reducer 401 is connected with the transmission rod set 402 through an output shaft 405, and the transmission rod set 402 is connected with the movable frame 3 so as to drive the movable frame 3 to move through the transmission rod set 402.
Wherein, the transmission rod group 402 comprises a crank rod 403 and a side link 404, and a first end of the crank rod 403 is connected with an output shaft 405 to drive the crank rod 403 to rotate through the output shaft 405; one end of the side link 404 is connected with the second end of the crank bar 403, and the other end of the side link 404 is connected with the movable frame 3.
In order to support the output shaft 405, the spring life testing apparatus further includes a support post 7, and the output shaft 405 is rotatably disposed on the support post 7, so as to support the output shaft 405 through the support post 7. Preferably, the support column 7 is fixed to the test bench 9.
In the specific implementation process, as shown in fig. 1, the other end of the side link 404 is connected with the first installation rod 303 of the movable frame 3, when the driving motor 400 is started, the driving motor 400 drives the speed reducer 401 to rotate, the speed reducer 401 drives the crank rod 403 to rotate through the output shaft 405, so that the movable frame 3 is driven to reciprocate between an initial position where the spring 2 to be tested is not subjected to tensile force and a tensile position where the spring 2 to be tested is in a maximum tensile state through the side link 404, and the spring 2 to be tested is driven to stretch or retract through the reciprocating motion of the movable frame 3, so that the service life of the spring 2 to be tested is tested by recording the number of times that the spring 2 to be tested stretches to the maximum tensile state.
In this embodiment, as shown in fig. 1, the spring life test apparatus further includes: the fixed station 10, the mount is set up on the fixed station 10. The mount 1 includes fixing base 100, two second backup pads 101, and second installation pole 102, and fixing base 100 sets up on fixed station 10, and two second backup pads 101 set up on fixing base 100, and two second backup pad 101 interval sets up, and two second backup pads 101 all are connected with fixing base 100, and the both ends of second installation pole 102 are connected with two second backup pads 101 respectively, and second installation pole 102 is used for wearing to establish at the first end of awaiting measuring spring 2.
In order to record the number of times the spring 2 to be tested is stretched, the present utility model may be implemented as follows:
the first test mode is that the spring life test device further comprises: the timing device is connected with the driving device 4 to obtain the stretching times of the spring 2 to be tested by recording the working time of the driving device 4.
The second test mode is that the spring life test device further comprises: the position detection device is matched with the movable frame 3 or the second end of the spring 2 to be tested so as to detect whether the movable frame 3 moves to a stretching position where the spring 2 to be tested is in a maximum stretching state; the counting device is connected with the position detecting device to record the number of times the movable frame 3 moves to the stretching position of the spring 2 to be tested in the maximum stretching state according to the detection result of the position detecting device.
In this embodiment, as shown in fig. 1, the spring life test apparatus further includes: mounting table 5 and mounting bracket 6, mounting bracket 6 set up on mounting table 5, drive arrangement 4 installs on mounting bracket 6. Specifically, the mounting bracket 6 includes a first plate 601 and a second plate 602, the first plate 601 is mounted on the mounting table 5, the second plate 602 is connected to the first plate 601, and the second plate 602 is perpendicular to the mounting table 5. The driving device 4 is mounted on the second plate 602.
In this embodiment, as shown in fig. 1, the driving device 4 further includes a connection board 406, the first board 601 is on the mounting table 5, the second board 602 is connected with the first board 601, the second board 602 is perpendicular to the mounting table 5, the speed reducer 401 is mounted on the second board 602, and the connection board 406 is mounted on a side of the second board 602 away from the transmission rod set 402, and the speed reducer 401 is connected with the driving motor 400 through the connection board 406.
In order to realize the spacing to movable frame 3, spring life test equipment still includes: the first limiting component and the second limiting component are arranged at an initial position of the spring 2 to be tested, which is not subjected to stretching force, and the second limiting component is arranged at a stretching position of the spring 2 to be tested, which is in a maximum stretching state, so that the movable frame 3 is limited at the initial position of the spring 2 to be tested, which is not subjected to stretching force, and at the stretching position of the spring 2 to be tested, which is in the maximum stretching state, respectively, through the first limiting component and the second limiting component. Specifically, the first limiting component and the second limiting component are both disposed on the sliding rail 801, and the first limiting component and the second limiting component are both in limiting fit with the slider 802. Preferably, the first limit component and the second limit component are limit switches.
Specifically, when the spring 2 to be tested is in an initial state of not bearing the tensile force, a first limiting member is provided at a position of one side of the slider 802 close to the fixed frame 1, and when the spring 2 to be tested is in a maximum tensile state, a second limiting member is provided at a position of one side of the slider 802 close to the driving device 4.
In the actual use process, when the driving motor 400 is not started yet, the spring 2 to be tested is in an initial state of not bearing the tensile force, when the driving motor 400 is started, the driving motor 400 drives the speed reducer 401 to rotate, the speed reducer 401 drives the movable frame 3 to reciprocate on the sliding component 8 through the output shaft 405, so as to drive the spring 2 to be tested to stretch and retract, when the crank rod 403, the side link 404 and the spring 2 to be tested are in the collinear position for the first time (namely, the center line of the crank rod 403, the center line of the side link 404 and the center line of the spring 2 to be tested are collinear), the spring 2 to be tested is in a maximum tensile state, and when the next time is collinear, the spring 2 to be tested returns to the state of not bearing the tensile force. The life of the spring 2 to be tested is tested by recording the number of times the movable frame 3 moves to the stretched position where the spring 2 to be tested is in the maximum stretched state.
In another embodiment provided by the utility model, the driving device 4 is a driving piston cylinder, a piston rod of the driving piston cylinder is connected with the movable frame 3, so that the movable frame 3 is pushed and pulled by stretching of the piston rod to reciprocate between an initial position where the spring 2 to be tested is not subjected to stretching force and a stretching position where the spring 2 to be tested is in a maximum stretching state, and the spring 2 to be tested is driven to stretch or retract by the reciprocating motion of the movable frame 3, so that the service life of the spring 2 to be tested is tested by recording the number of times that the spring 2 to be tested stretches to the maximum stretching state.
From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:
the utility model provides spring life testing equipment which comprises a fixed frame 1, a spring to be tested 2, a movable frame 3 and a driving device 4, wherein the first end of the spring to be tested 2 is connected with the fixed frame 1; the second end of the spring 2 to be tested is connected with a movable frame 3, the movable frame 3 is movably arranged along the direction far away from or near to the fixed frame 1, and the movable frame 3 is provided with a stretching position for enabling the spring 2 to be tested to be in a maximum stretching state and an initial position for enabling the spring 2 to be tested to be in an un-stretching force; the driving device 4 is in driving connection with the movable frame 3 so as to drive the movable frame 3 to reciprocate between an initial position where the spring 2 to be tested is not subjected to stretching force and a stretching position where the spring 2 to be tested is in a maximum stretching state, and the spring 2 to be tested is driven to stretch or retract through the reciprocation of the movable frame 3, so that the service life of the spring 2 to be tested is tested by recording the number of times that the spring 2 to be tested stretches to the maximum stretching state. Therefore, the spring life test equipment has the advantages of simple integral structure, convenience in installation, low production cost, convenience in disassembly, convenience in maintenance and replacement of parts, and convenience in testing, and can be adapted to springs to be tested of different models.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. A spring life testing apparatus, comprising:
the fixing frame (1), the fixing frame (1) is used for being connected with the first end of the spring (2) to be tested;
a movable frame (3), wherein the movable frame (3) is used for being connected with the second end of the spring (2) to be tested, the movable frame (3) is movably arranged in a direction away from or close to the fixed frame (1), and the movable frame (3) is provided with a stretching position for enabling the spring (2) to be tested to be in a maximum stretching state and an initial position for enabling the spring (2) to be tested to be in an un-stretching force bearing state;
the driving device (4) is in driving connection with the movable frame (3) so as to drive the movable frame (3) to reciprocate between the initial position and the stretching position, and the service life of the spring (2) to be tested is tested by recording the number of times that the spring (2) to be tested stretches to the maximum stretching state.
2. The spring life testing apparatus of claim 1, further comprising:
a test stand (9);
the sliding assembly (8), sliding assembly (8) include slide rail (801) and slider (802), slide rail (801) set up on testboard (9) and follow the direction of movement of movable frame (3) extends, slider (802) slidable install on slide rail (801), movable frame (3) with slider (802) are connected.
3. Spring life testing device according to claim 2, characterized in that the mobile frame (3) comprises:
a connection plate (301), the connection plate (301) being connected to the slider (802);
the two first support plates (302) are arranged at intervals, and the two first support plates (302) are connected with the connecting plate (301);
the first mounting rod (303), the both ends of first mounting rod (303) are connected with two respectively first backup pad (302), first mounting rod (303) are used for inserting and establish at the second end of awaiting measuring spring (2).
4. The spring life testing apparatus of claim 2, wherein,
the number of the sliding assemblies (8) is multiple, and the sliding assemblies (8) are arranged in parallel.
5. The spring life testing apparatus of claim 1, further comprising:
a fixed table (10);
the fixing frame (1) comprises a fixing seat (100), two second supporting plates (101) and a second mounting rod (102), wherein the two second supporting plates (101) are connected with the fixing seat (100), two ends of the second mounting rod (102) are respectively connected with the two second supporting plates (101), and the second mounting rod (102) is used for being arranged at the first end of the spring (2) to be tested in a penetrating mode.
6. The spring life testing apparatus of claim 1, wherein,
the driving device (4) comprises a driving motor (400) and a speed reducer (401), and the driving motor (400) is connected with the speed reducer (401);
the transmission rod group (402), speed reducer (401) pass through output shaft (405) with transmission rod group (402) are connected, transmission rod group (402) with movable frame (3) are connected, so that pass through transmission rod group (402) drive movable frame (3) remove.
7. The spring life testing apparatus of claim 6, wherein,
the transmission rod group (402) comprises a crank rod (403) and a side link (404), wherein a first end of the crank rod (403) is connected with the output shaft (405) so as to drive the crank rod (403) to rotate through the output shaft (405); one end of the side link (404) is connected with the second end of the crank rod (403), and the other end of the side link (404) is connected with the movable frame (3); and/or
The spring life test equipment further comprises a support column (7), and the output shaft (405) is rotatably arranged on the support column (7) in a penetrating mode, so that the output shaft (405) is supported through the support column (7).
8. The spring life testing apparatus of claim 1, wherein,
the driving device (4) comprises a driving piston cylinder, and a piston rod of the driving piston cylinder is connected with the movable frame (3) so as to push and pull the movable frame (3) through the expansion and the contraction of the piston rod.
9. The spring life testing apparatus according to any one of claims 1 to 8, further comprising:
the timing device is connected with the driving device (4) to obtain the stretching times of the spring (2) to be tested by recording the working time of the driving device; and/or
The position detection device is matched with the second end of the movable frame (3) or the spring (2) to be tested so as to detect whether the movable frame (3) moves to the stretching position; the counting device is connected with the position detection device to record the number of times the movable frame (3) moves to the stretching position according to the detection result of the position detection device.
10. The spring life testing apparatus according to any one of claims 1 to 8, further comprising:
the device comprises a mounting table (5) and a mounting frame (6), wherein the mounting frame (6) is mounted on the mounting table (5), and the driving device (4) is mounted on the mounting frame (6); and/or
The first limiting component and the second limiting component are arranged at the initial position, and the second limiting component is arranged at the stretching position, so that the movable frame (3) is limited at the initial position and the stretching position through the first limiting component and the second limiting component respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223472847.9U CN219348122U (en) | 2022-12-22 | 2022-12-22 | Spring life test equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223472847.9U CN219348122U (en) | 2022-12-22 | 2022-12-22 | Spring life test equipment |
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| CN219348122U true CN219348122U (en) | 2023-07-14 |
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| CN202223472847.9U Active CN219348122U (en) | 2022-12-22 | 2022-12-22 | Spring life test equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117825032A (en) * | 2024-02-21 | 2024-04-05 | 东莞市理彬五金制品有限公司 | Service life testing equipment for spring |
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2022
- 2022-12-22 CN CN202223472847.9U patent/CN219348122U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117825032A (en) * | 2024-02-21 | 2024-04-05 | 东莞市理彬五金制品有限公司 | Service life testing equipment for spring |
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