CN112629894B - Compensation cylinder testing tool and testing method - Google Patents
Compensation cylinder testing tool and testing method Download PDFInfo
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- CN112629894B CN112629894B CN202011423504.6A CN202011423504A CN112629894B CN 112629894 B CN112629894 B CN 112629894B CN 202011423504 A CN202011423504 A CN 202011423504A CN 112629894 B CN112629894 B CN 112629894B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a compensation cylinder testing tool and a testing method, which comprises an assembling and stabilizing support frame, wherein high stabilizing support legs are longitudinally and fixedly installed at corner positions at the bottom of the assembling and stabilizing support frame, a rotary driving motor is fixedly installed at the middle position at the bottom of the assembling and stabilizing support frame, an anti-skidding support foot pad is fixedly installed at the bottom of the high stabilizing support legs, an output shaft of the rotary driving motor penetrates through the middle position at the upper end of the outer part of the assembling and stabilizing support frame and is fixedly installed with a rotary bearing platform, a pushing and adjusting screw penetrates through the middle position at the upper end of the outer edge side of a positioning and fixing plate and is fixedly connected with a tool clamping plate, and a clamp fastening rubber pad is fixedly installed at the middle position at the inner side of the tool clamping plate. According to the compensation cylinder testing tool and the testing method, the compensation cylinder testing tool is designed into an assembly structure with high overall activity, and the assembly stable support frame with the stable support mechanism is used as a bearing main body, so that the overall use stability can be effectively guaranteed.
Description
Technical Field
The invention relates to the technical field of machining of compensation oil cylinders, in particular to a compensation cylinder testing tool and a testing method.
Background
The compensating oil cylinder is a common and frequently-adopted oil cylinder, a plurality of links of tests are needed in production work of the compensating oil cylinder, and a test tool is an indispensable important auxiliary device in the test work.
However, most of existing compensation cylinder testing tools and testing methods in the existing market exist, the overall supporting stability is general, and the compensation cylinder testing tools and testing methods do not have a good supporting anti-skid effect, so that the overall supporting bearing work is easily affected by the external environment, and the overall structure is more vertical, and only stable clamping can be performed on the compensation cylinder to be tested in a single specification, and stable adjustment can not be performed on the clamped angle and the clamped position conveniently according to specific use requirements, the overall use function is not beneficial to improving the overall applicability, meanwhile, the overall test link which can be met is limited by the structure, and the defects that the comprehensive use performance of the compensation cylinder can not be achieved to the maximum are overcome.
Disclosure of Invention
The invention aims to provide a compensation cylinder testing tool and a testing method, and aims to solve the problems that the background art does not have a good supporting and anti-skidding effect, is not convenient for stably adjusting the clamped angle and direction according to specific use requirements, and cannot reflect the comprehensive use performance of the compensation cylinder to the maximum extent.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a compensation jar test fixture and test method, includes the assembly firm support frame, the vertical fixed mounting in corner position of assembly firm support frame bottom has high firm supporting leg, the intermediate position fixed mounting of assembly firm support frame bottom has rotary drive motor, the bottom fixed mounting of high firm supporting leg has anti-skidding support callus on the sole, rotary drive motor's output shaft passes the intermediate position fixed mounting of the outside upper end of assembly firm support frame and has rotatory plummer, the outside upper end fixed mounting of rotatory plummer has rotatory bearing support board, the vertical fixed mounting in corner position of the outside upper end of rotatory bearing support board has firm pillar, horizontal fixed mounting has the fixed support board between the inboard upper end position of firm pillar avris, the alignment pilot hole has been seted up to the outside intermediate position of fixed support board, the inboard movable mounting of fixed support board has the regulation assembly plate, the outside avris position fixed mounting of alignment assembly hole has the fixed rubber ring, the intermediate position fixed mounting of the outside avris of regulation assembly plate has the alignment regulation fastening screw rod, the avris position fixed mounting of the outside upper end of regulation assembly plate has the location fixed plate, the alignment regulation fastening screw rod passes the alignment assembly hole movable mounting plate, the inboard of the intermediate position of the fixed mounting plate has the inboard of the fixed mounting plate, the inboard of the location clamping plate, the inboard of the tool is connected with the clamp plate.
Preferably, high firm supporting leg is whole in assembly firm support frame bottom and mutual seamless fixed connection to be fixed integral type structure rather than, and high firm supporting leg has four that the specification is the same at the corner position symmetry fixed mounting of assembly firm support frame bottom, the antiskid supports the callus on the sole and bears and adopts the rubber material, and in the bottom of high firm supporting leg rather than mutual seamless fixed connection.
Preferably, the rotary bearing platform is integrally of a disc-shaped platform body structure, the rotary bearing platform is fixedly connected with the rotary bearing support plate in a seamless mode at the middle position of the bottom of the rotary bearing support plate, the four stabilizing support columns are symmetrically and fixedly installed at four corner positions at the upper end of the outer portion of the rotary bearing support plate, the four stabilizing support columns are of four cylinder structures, and the four cylinder structures are fixedly connected with the upper end face of the rotary bearing support plate in a seamless mode.
Preferably, the fixed support plate is symmetrically and transversely fixedly provided with two fixing plates with the same specification at the upper end positions of the inner sides of the two sides of the four stable support columns, the inner diameter size of each alignment assembly hole is correspondingly matched with the outer diameter size of each alignment adjusting fastening screw rod, the fixing rubber ring is symmetrically and fixedly provided with two fixing plates with the same specification at the inner side and the outer side of each alignment assembly hole, and the fixing rubber ring is made of rubber.
Preferably, the two same-specification adjusting fastening screws are symmetrically and fixedly mounted at the middle positions of the two outer sides of the adjusting and assembling plate, the adjusting and assembling plate is integrally arranged between the inner sides of the fixing support plates by taking the aligning and adjusting fastening screws as a rotation center, and the internal specification of the aligning and fastening screw sleeve is correspondingly matched with the external specification of the aligning and adjusting fastening screws.
Preferably, the location fixed plate has two that the specification is the same at the both sides position symmetry fixed mounting of adjusting the outside upper end of assembly plate, impel adjusting screw and frock splint whole intermediate position symmetry movable mounting that two outside avris upper ends of location fixed plate have two sets of that the specification is the same, and impel between the outside specification of adjusting screw and the location fixed plate and the inside specification of impeling the adjusting screw junction to correspond each other coincide.
A compensation cylinder test tool comprises a test method as follows:
the method comprises the following steps: the assembly stable support frame is used as a main body to stably complete reasonable assembly and fixation among mechanisms, and the whole body is stably supported by utilizing a symmetrical fixed mounting structure of the high stable support leg at the bottom of the assembly stable support frame and rubber materials adopted by the anti-skid support foot pad;
step two: the adjusting and assembling plate is adjusted to be in a horizontal state by utilizing the movable installation relation of the contraposition adjusting and fastening screw rods in the two fixed support plates, then a compensation cylinder workpiece to be tested is stably clamped between the two positioning and fixing plates at the upper end of the outer part of the adjusting and assembling plate, the tool clamping plate is driven to be pushed inwards or expanded outwards by rotating and propelling the adjusting screw rods, and different compensation cylinders to be tested are subjected to adaptive clamping operation;
step three: according to the difference of service environment and user demand, can set up the inside structural relation of counterpoint pilot hole through counterpoint regulation fastening screw outside fixed extension board in normal test work, to stablizing the clamping to await measuring the coaxial angle regulation work that adjusting the mounting plate whole behind the compensation jar carries out as the rotation center with counterpoint regulation fastening screw to can drive rotatory plummer to carry out very stable position adjustment work to the rotation and bear extension board and upper portion whole through starting rotary driving motor.
Compared with the prior art, the invention has the beneficial effects that: the compensation cylinder testing tool and the testing method have the advantages that the compensation cylinder testing tool is designed into an assembly structure with strong overall activity, the assembly stable support frame with the stable support mechanism serves as a bearing main body, the overall use stability can be effectively guaranteed, the tool can be integrally suitable for testing of compensation cylinders with different specifications through the fixed clamping structure adopting the screw thread pushing butt clamp, the overall applicability is enhanced, the angle adjustment and the direction adjustment of the whole upper end of the assembly stable support frame can be realized according to specific use requirements through the adoption of the multi-stage movable assembly structure, the purpose of ideal testing effect is achieved, the compensation cylinders to be tested can be stably assembled, multiple testing works of different links can be stably completed, and the self comprehensive use performance is improved to an ideal state.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a detailed split structure according to the present invention;
FIG. 3 is a schematic view of the split structure of the present invention;
FIG. 4 is a schematic view of the overall assembly structure of the bearing plate according to the present invention;
FIG. 5 is a schematic view of a disassembled structure of the bearing plate of the present invention;
fig. 6 is a schematic view of an adjusting and assembling plate connecting structure according to the present invention.
In the figure: 1. assembling a stable support frame; 2. a highly stable support leg; 3. a rotation driving motor; 4. the anti-skid supporting foot pad; 5. rotating the bearing table; 6. rotating the bearing support plate; 7. stabilizing the support column; 8. fixing a support plate; 9. aligning and assembling holes; 10. adjusting the assembling plate; 11. fixing a rubber ring; 12. aligning and adjusting the fastening screw; 13. positioning the fixing plate; 14. aligning and fastening the threaded sleeve; 15. advancing the adjusting screw; 16. a clamping plate is assembled; 17. and (5) clamping and fastening the rubber pad.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: a compensating cylinder testing tool and a testing method thereof comprise an assembly steady support frame 1, a high steady support leg 2, a rotary driving motor 3, an anti-skid support foot pad 4, a rotary bearing platform 5, a rotary bearing support plate 6, a steady support 7, a fixed support plate 8, an alignment assembly hole 9, an adjusting assembly plate 10, a fixed rubber ring 11, an alignment adjusting fastening screw 12, a positioning fixing plate 13, an alignment fastening screw sleeve 14, a propelling adjusting screw 15, a tool clamping plate 16 and an alignment clamping fastening rubber pad 17, a high steady support leg 2 is vertically and fixedly installed at the corner position of the bottom of the assembly steady support frame 1, a rotary driving motor 3 is fixedly installed at the middle position of the bottom of the assembly steady support frame 1, an anti-skid support foot pad 4 is fixedly installed at the bottom of the high steady support leg 2, an output shaft of the rotary driving motor 3 passes through the middle position of the upper end of the outer end of the assembly steady support frame 1 and is fixedly installed with the rotary bearing platform 5, a rotary bearing support plate 6 is fixedly installed at the outer upper end of the rotary bearing support plate 5, a corner position of the outer upper end of the outer end of the rotary bearing support plate 6 is vertically and fixedly installed with the support plate 7, a fixed with the alignment adjusting screw rod 12, a fixed assembly screw sleeve 13 is installed at the outer side of the fixed assembly steady support plate 10, a fixed assembly screw sleeve 12, a fixed assembly screw sleeve is installed at the middle position of the fixed assembly screw sleeve 13, a propulsion adjusting screw 15 penetrates through the middle position of the upper end of the outer side of the positioning fixing plate 13 and is fixedly connected with a tooling clamping plate 16, and a butt clamp fastening rubber pad 17 is fixedly arranged at the middle position of the inner side of the tooling clamping plate 16;
furthermore, the whole high and stable supporting leg 2 is in seamless fixed connection with the bottom of the assembling and stable supporting frame 1 and is in a fixed integrated structure with the assembling and stable supporting frame, four high and stable supporting legs 2 with the same specification are symmetrically and fixedly installed at the corner positions of the bottom of the assembling and stable supporting frame 1, the anti-skid supporting foot pad 4 is made of rubber for bearing and is in seamless fixed connection with the bottom of the high and stable supporting leg 2, and the influence of the external environment on the whole normal test work can be reduced to the greatest extent on the basis of ensuring the stability of the whole structure;
furthermore, the rotary bearing platform 5 is integrally of a disc-shaped platform body structure and is fixedly connected with the rotary bearing support plate 6 in a mutual seamless mode at the middle position of the bottom of the rotary bearing support plate 6, four stabilizing struts 7 are symmetrically and fixedly installed at four corner positions of the upper end of the outer portion of the rotary bearing support plate 6, the four stabilizing struts are of cylindrical structures which are fixedly connected with the upper end face of the rotary bearing support plate 6 in a mutual seamless mode, and therefore the stability of the integral supporting structure is effectively enhanced;
furthermore, two fixing support plates 8 are symmetrically and transversely fixedly installed at the upper end positions of the inner sides of the two sides of the four stabilizing support columns 7, the inner diameter of each alignment assembly hole 9 is matched with the outer diameter of each alignment adjusting fastening screw 12, two fixing rubber rings 11 are symmetrically and fixedly installed at the inner side and the outer side of each alignment assembly hole 9 and are made of rubber materials, the fixing rubber rings 11 can play a good external protection effect on the external assembly work of the whole alignment adjusting fastening screw 12 of the alignment fastening screw sleeve 14, have good impact resistance and are beneficial to reducing impact force applied in the compensation cylinder test;
furthermore, two alignment adjusting fastening screws 12 with the same specification are symmetrically and fixedly arranged in the middle positions of two outer sides of the adjusting and assembling plate 10, the adjusting and assembling plate 10 is integrally arranged between the inner sides of the fixing support plates 8, the alignment adjusting fastening screws 12 are used as a rotation center, the inner specification of the alignment fastening screw sleeve 14 and the outer specification of the alignment adjusting fastening screws 12 are matched with each other correspondingly, and the support angle and the orientation of the whole clamped support can be properly adjusted according to the use requirement in the test working process of the whole;
furthermore, the two sides of the upper end of the outer part of the adjusting and assembling plate 10 are symmetrically and fixedly provided with two positioning and fixing plates 13 with the same specification, the pushing adjusting screw 15 and the tooling clamping plate 16 are symmetrically and movably provided with two groups with the same specification at the middle positions of the upper ends of the outer sides of the two positioning and fixing plates 13 integrally, the external specification of the pushing adjusting screw 15 is matched with the internal specification of the joint of the positioning and fixing plates 13 and the pushing adjusting screw 15 correspondingly, and the compensation cylinder to be tested can be fastened and clamped stably to ensure the stability of the integral test.
The working principle is as follows: the assembly steady support frame 1 is taken as a main body to stably complete reasonable assembly and fixation among mechanisms, the rubber material adopted by a symmetrical fixed mounting structure of the high steady support leg 2 at the bottom of the assembly steady support frame 1 and an anti-skid support foot pad 4 is utilized to ensure the support stability and anti-skid effect of the compensation cylinder test tool in the normal use process to the maximum extent, the influence of the external environment on the whole work under different use conditions can be reduced, the adjusting assembly plate 10 is adjusted to be in a horizontal state by utilizing the movable mounting relation of the contraposition adjusting fastening screw 12 in the two fixed support plates 8, the compensation cylinder workpiece to be tested is stably clamped between two positioning fixing plates 13 at the upper end of the outer part of the adjusting assembly plate 10, the tool clamp plate 16 is driven to be pushed inwards or outwards expanded by rotating the pushing adjusting screw 15, and stable clamping operation can be carried out on compensation cylinders to be tested with different specifications, so as to ensure the clamping stability of the compensation cylinder to be tested in the testing process, improve the overall testing quality and be beneficial to improving the testing accuracy, according to different use environments and use requirements, the structure relationship inside the aligning assembly hole 9 formed outside the fixed support plate 8 by the aligning adjusting and fastening screw 12 can be used in normal testing work, the coaxial angle adjusting work with the aligning adjusting and fastening screw 12 as the rotation center can be carried out on the whole adjusting and assembling plate 10 after the compensation cylinder to be tested is stably clamped, the rotary bearing platform 5 can be driven to carry out extremely stable orientation adjusting work on the whole rotary bearing support plate 6 and the upper part thereof by starting the rotary driving motor 3, so that the whole can realize more continuous and stable pressure testing, impact resistance testing, sealing testing and other necessary tests before the factory production, the whole production quality of the compensation cylinder is guaranteed.
A test tool for a compensation cylinder comprises a test method as follows:
the method comprises the following steps: the assembly stable support frame 1 is used as a main body to stably complete reasonable assembly and fixation among mechanisms, and the rubber materials adopted by the symmetrical fixed mounting structure of the high stable support leg 2 at the bottom of the assembly stable support frame 1 and the anti-skid support foot pad 4 are utilized to guarantee the support stability and the anti-skid effect of the compensation cylinder test tool in the normal use process to the maximum extent, so that the influence of the external environment on the whole work under different use conditions can be reduced;
step two: the adjusting and assembling plate 10 is adjusted to be in a horizontal state by utilizing the movable installation relation of the alignment adjusting and fastening screw 12 in the two fixed support plates 8, then a compensation cylinder workpiece to be tested is stably clamped between the two positioning and fixing plates 13 at the outer upper end of the adjusting and assembling plate 10, the tool clamping plate 16 is driven to be pushed inwards or expanded outwards by rotating the pushing adjusting screw 15, stable clamping operation can be carried out on compensation cylinders to be tested with different specifications, so that the clamping stability of the compensation cylinders to be tested in the testing process is ensured, the integral testing quality is improved, and the testing accuracy is improved;
step three: according to different use environments and use requirements, the structure relationship inside the alignment assembly hole 9 formed outside the fixed support plate 8 by the alignment adjusting and fastening screw 12 can be used for carrying out coaxial angle adjusting work by taking the alignment adjusting and fastening screw 12 as a rotation center on the whole adjusting and assembling plate 10 stably clamped with the compensation cylinder to be tested in normal test work, and the rotary bearing platform 5 can be driven to carry out extremely stable direction adjusting work on the rotary bearing support plate 6 and the whole upper part thereof by starting the rotary driving motor 3;
step four: through the steps, the tool can stably fasten and clamp the whole compensation cylinder to be tested in normal use and work, and can adjust different test angles and test directions according to use requirements, so that the whole compensation cylinder can be continuously and stably tested before delivery in multiple production modes, such as pressure test, impact resistance test, tightness test and the like, and the whole production quality of the compensation cylinder is guaranteed.
Through the steps, the rapid and stable test operation in the production of the compensation cylinder is stably realized.
Finally, it should be noted that the above-mentioned contents are only used for illustrating the technical solutions of the present invention, and do not limit the protection scope of the present invention, and those skilled in the art can make simple modifications or equivalent substitutions on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The utility model provides a compensation jar test fixture, includes the firm support frame of assembly (1), its characterized in that: the utility model discloses a corner position vertical fixed mounting who assembles firm support frame (1) bottom has high firm supporting leg (2), the intermediate position fixed mounting who assembles firm support frame (1) bottom has rotary driving motor (3), the bottom fixed mounting of high firm supporting leg (2) has anti-skidding support callus on the sole (4), the output shaft of rotary driving motor (3) passes the intermediate position fixed mounting who assembles firm support frame (1) outside upper end and has rotatory plummer (5), the outside upper end fixed mounting of rotatory plummer (5) has rotatory bearing extension board (6), the corner position vertical fixed mounting who rotatory bearing extension board (6) outside upper end has firm pillar (7), horizontal fixed mounting has fixed extension board (8) between the inboard upper end position of firm pillar (7) avris, counterpoint pilot hole (9) have been seted up to the outside intermediate position of fixed extension board (8), the inboard movable mounting of fixed extension board (8) has regulation pilot assembly plate (10), the outside avris position fixed mounting of counterpoint pilot hole (9) has fixed rubber ring (11), the outside avris position fixed mounting of counterpoint pilot plate (10) has counterpoint fastening screw rod (12), regulation pilot screw rod (13) pass counterpoint mounting screw rod (13) external fastening and fix a position and install counterpoint pilot plate (13) and adjust pilot plate (12) (14) The utility model discloses a positioning fixing plate, intermediate position movable mounting of outside avris upper end of positioning fixing plate (13) has propulsion adjusting screw (15), it passes intermediate position fixedly connected with frock splint (16) of positioning fixing plate (13) outside avris upper end to impel adjusting screw (15), the inboard intermediate position fixed mounting of frock splint (16) has to pressing from both sides fastening cushion (17).
2. The compensation cylinder test tool of claim 1, characterized in that: high firm supporting leg (2) wholly assemble firm support frame (1) bottom rather than seamless fixed connection each other to be fixed integral type structure rather than, and high firm supporting leg (2) have four that the specification is the same at the corner rigidity fixed mounting who assembles firm support frame (1) bottom, antiskid support callus on the sole (4) bear and adopt the rubber material to at the bottom of high firm supporting leg (2) rather than seamless fixed connection each other.
3. The compensation cylinder test tool of claim 1, wherein: the rotary bearing platform (5) is integrally of a disc-shaped platform body structure and is in seamless fixed connection with the rotary bearing support plate (6) at the middle position of the bottom of the rotary bearing support plate, four stabilizing supports (7) are symmetrically and fixedly arranged at four corner positions at the upper end of the outer portion of the rotary bearing support plate (6) and are of four cylinder structures in seamless fixed connection with the upper end face of the rotary bearing support plate (6).
4. The compensation cylinder test tool of claim 1, characterized in that: the fixed support plate (8) is provided with two same specifications at the inner side upper end positions of the two sides of the four stable support columns (7) in a symmetrical mode, the inner diameter of each alignment assembly hole (9) is matched with the outer diameter of each alignment adjusting fastening screw rod (12) in a corresponding mode, the fixed rubber ring (11) is provided with two same specifications at the inner side and the outer side of each alignment assembly hole (9) in a symmetrical mode, and the fixed rubber ring is made of rubber.
5. The compensation cylinder test tool of claim 1, wherein: the middle positions of the two outer sides of the adjusting and assembling plate (10) of the aligning and adjusting fastening screw rods (12) are symmetrically and fixedly provided with two same specifications, the adjusting and assembling plate (10) is integrally arranged between the inner sides of the fixing support plates (8) to use the aligning and adjusting fastening screw rods (12) as a rotating center, and the inner specifications of the aligning and fastening screw sleeve (14) and the outer specifications of the aligning and adjusting fastening screw rods (12) are matched correspondingly.
6. The compensation cylinder test tool of claim 1, wherein: the both sides position symmetry fixed mounting of location fixed plate (13) in the outside upper end of adjusting assembly plate (10) has two that the specification is the same, it has two sets of that the specification is the same at two location fixed plate (13) outside avris upper ends intermediate position symmetry movable mounting wholly to impel adjusting screw (15) and frock splint (16), and impel between the outside specification of adjusting screw (15) and location fixed plate (13) and the inside specification of impelling adjusting screw (15) junction to correspond each other coincide.
7. The testing method of the compensating cylinder testing tool according to any one of claims 1 to 6, comprising the following steps:
the method comprises the following steps: the assembly stable support frame (1) is used as a main body to stably complete reasonable assembly and fixation among all mechanisms, and the high stable support leg (2) is used for stably supporting the whole body by a symmetrical fixed installation structure at the bottom of the assembly stable support frame (1) and a rubber material adopted by the anti-skid support foot pad (4);
step two: the movable installation relation of an adjusting assembly plate (10) in two fixed support plates (8) is adjusted to be in a horizontal state by utilizing an alignment adjusting fastening screw rod (12), then a compensation cylinder workpiece to be tested is stably clamped between two positioning fixed plates (13) at the outer upper end of the adjusting assembly plate (10), a tool clamp plate (16) is driven to be pushed inwards or expanded outwards by rotating a pushing adjusting screw rod (15), and adaptive clamping operation is carried out on different compensation cylinders to be tested;
step three: according to the difference of service environment and user demand, can set up the inside structural relation of counterpoint pilot hole (9) outside fixed extension board (8) through counterpoint regulation fastening screw (12) in normal test work, adjust pilot board (10) whole after the compensation jar that awaits measuring of stable clamping and carry out the coaxial angle regulation work of using counterpoint regulation fastening screw (12) as rotation center, and can be through starting rotary driving motor (3), drive rotatory plummer (5) and carry out very stable position adjustment work to rotation bearing extension board (6) and upper portion whole.
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| CN202011423504.6A CN112629894B (en) | 2020-12-08 | 2020-12-08 | Compensation cylinder testing tool and testing method |
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| CN202011423504.6A CN112629894B (en) | 2020-12-08 | 2020-12-08 | Compensation cylinder testing tool and testing method |
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| CN112629894B true CN112629894B (en) | 2023-01-24 |
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