CN115585960A - Hydraulic cylinder leakproofness testing arrangement - Google Patents
Hydraulic cylinder leakproofness testing arrangement Download PDFInfo
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- CN115585960A CN115585960A CN202211565595.6A CN202211565595A CN115585960A CN 115585960 A CN115585960 A CN 115585960A CN 202211565595 A CN202211565595 A CN 202211565595A CN 115585960 A CN115585960 A CN 115585960A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
Abstract
The invention discloses a hydraulic cylinder tightness testing device, and relates to the field of hydraulic cylinder testing. The utility model provides a pneumatic cylinder leakproofness testing arrangement, includes the testboard, still includes: the support frame is fixedly connected to the test board; the rectangular shell is fixedly connected to the lower side of the upper end of the supporting frame; the manual clamping assembly is arranged on the test board and is positioned right below the rectangular shell; the hydraulic reciprocating telescopic column is fixedly connected to the upper end of the supporting frame and is positioned in the center of the rectangular shell; compared with the mode of judging the integral strength of the hydraulic cylinder by carrying out long-time pressure maintaining on the hydraulic cylinder in the prior art, the method adopts the mode of impacting the hydraulic cylinder, can accelerate the test progress of the hydraulic cylinder, can quickly test the performance strengths of load resistance, pressure maintaining, sealing and the like of the hydraulic cylinder, can test the integral performance strength of the hydraulic cylinder, and greatly improves the test efficiency.
Description
Technical Field
The invention belongs to the technical field of hydraulic cylinder testing, and particularly relates to a hydraulic cylinder tightness testing device.
Background
The hydraulic cylinder is a hydraulic actuating element for converting hydraulic energy into mechanical energy, has simple structure and reliable work, can remove a speed reducer when realizing reciprocating motion, has no transmission clearance and moves stably, thereby being widely applied to hydraulic systems of various machines, and consists of a cylinder barrel, a cylinder cover, a piston rod, a sealing element, a buffer piece and the like.
In a hydraulic system, a hydraulic cylinder is an important actuating element in the hydraulic system, and the stability of the whole hydraulic system is directly affected by the sealing performance of the hydraulic cylinder, so that before the hydraulic cylinder is used, the sealing performance of the hydraulic cylinder needs to be tested to judge whether the hydraulic cylinder meets the use requirement.
When the existing hydraulic cylinder tightness testing device is used for testing the tightness of a hydraulic cylinder, a piston rod needs to be lifted for a certain length, then an opposite acting force is applied to the piston rod, the applied force is continuously increased, after the acting force is applied to a specified magnitude, pressure maintaining can be carried out for a period of time, after a series of operations, the whole length of the hydraulic cylinder is finally detected, and the sealing performance of the hydraulic cylinder can be tested.
Disclosure of Invention
The technical problem underlying the present invention is to overcome the disadvantages of the prior art and to provide a hydraulic cylinder tightness testing device which overcomes or at least partly solves the above mentioned problems.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a pneumatic cylinder leakproofness testing arrangement, includes the testboard, still includes: the support frame is fixedly connected to the test board; the rectangular shell is fixedly connected to the lower side of the upper end of the supporting frame; the manual clamping assembly is arranged on the test board and is positioned right below the rectangular shell; the hydraulic reciprocating telescopic column is fixedly connected to the upper end of the supporting frame and is positioned in the center of the rectangular shell; the testing iron block is connected in the rectangular shell in a sliding mode, a first electrified magnetic block is fixedly connected to the telescopic end of the hydraulic reciprocating telescopic column, and an embedded groove matched with the first electrified magnetic block is formed in the testing iron block; the pneumatic clamping components are symmetrically arranged on the inner side of the supporting frame and close to the upper end of the cylinder body of the hydraulic cylinder to be tested; and the gas transmission assembly is used for transmitting gas into the pneumatic clamping assembly and is arranged at the rear side of the rectangular shell.
Further, manual centre gripping subassembly includes fixed plate, rotation bolt and first grip block, the inboard that is located the carriage on the testboard of fixed plate symmetry fixed connection, the rotation bolt passes through the screw thread and rotates the connection on the fixed plate, first grip block rotates the connection and is being close to the one end that awaits measuring the pneumatic cylinder at the rotation bolt.
Furthermore, the gas transmission assembly comprises a rotating plate, a first cylinder, a first piston rod with a piston and a tensioning spring, wherein grooves are symmetrically formed in the inner wall of the rear side of the rectangular shell, the rotating plate is rotatably connected into the grooves through a rotating shaft, the rotating plate is arranged at equal intervals, the first cylinder is transversely and fixedly connected to the position, close to the rotating plate, of the rectangular shell, the first piston rod is slidably connected into the first cylinder, the tensioning spring is arranged in the first cylinder, two ends of the tensioning spring are fixedly connected with one side, far away from the rotating plate, of the first cylinder and the first piston rod respectively, one end, far away from the tensioning spring, of the first piston rod is attached to the rotating plate, each group of the first cylinders is communicated with each other through a connecting gas pipe, one of the outermost sides of the first cylinders is provided with a gas inlet check valve, the middle of the first cylinders is provided with a gas outlet, and a gas outlet check valve is arranged in the gas outlet.
Still further, pneumatic centre gripping subassembly includes the second cylinder, has the second piston rod, second grip block and the tension spring of piston, second cylinder symmetry fixed connection is in the both sides of carriage, second piston rod sliding connection is in the second cylinder, tension spring sets up in the second cylinder, and both ends respectively with one side and second piston rod fixed connection that the carriage is close to first cylinder, second grip block fixed connection is in the one end that tension spring was kept away from to the second piston rod, two the air inlet of second cylinder communicates through first gas-supply pipe respectively with adjacent first cylinder that is equipped with the gas outlet between, be equipped with check valve and first solenoid valve in the business turn over gas port of second cylinder respectively.
When the pneumatic cylinder carries out the loading test for the convenience, can play the safeguard effect to the tester, avoid the cylinder body of pneumatic cylinder to take place to break the back, the cylinder body piece jumps to the tester, causes the injury to the tester, furtherly again, concave type form cavity has been seted up in the inner wall of rectangle casing, rectangle casing lower extreme seted up with the communicating concave type opening of concave type form cavity, sliding connection has concave type pole in the concave type form cavity, concave type pole lower extreme fixedly connected with concave type guard plate, equidistant fixedly connected with is many with the stretch cord between the upper end of concave type pole upper end and concave type form cavity, two sets of air inlets and gas outlet have been seted up to the upper end bilateral symmetry of concave type form cavity, switch on through the second gas-supply pipe between the gas outlet of second cylinder and the air inlet of concave type form cavity, be equipped with the second solenoid valve in the gas outlet of concave type form cavity.
In order to facilitate the tester to observe the real-time change of the hydraulic cylinder, furthermore, the concave protective plate is designed in a transparent shape.
In order to facilitate the concave protective plate to be attached to the test board, the protective effect on testers is further improved, and furthermore, notches are formed in the two sides of the concave protective plate and located right above the rotating bolt.
In order to facilitate rapid multiple continuous impact tests on the hydraulic cylinder to be tested, furthermore, the test iron blocks are provided with a plurality of blocks, every two adjacent test iron blocks are provided with a second electromagnetic block therebetween, and the second electromagnetic blocks are embedded in the test iron blocks above every two adjacent test iron blocks respectively.
In order to facilitate that the first electrified magnetic block and the second electrified magnetic block do not need to be always in an electrified state to adsorb and limit the test iron block, furthermore, through holes are formed in the positions, located on the lower surface of the test iron block, of two sides of the rectangular shell, and limiting sliding plates are connected in the through holes in a sliding mode.
In order to improve the stability of the second cylinder, furthermore, a supporting plate is fixedly connected to the inner side of the supporting frame, close to the lower end of the second cylinder, and the second cylinder is fixedly connected to the supporting plate.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects: compared with the mode of judging the integral strength of the hydraulic cylinder by carrying out long-time pressure maintaining on the hydraulic cylinder in the prior art, the method adopts the mode of impacting the hydraulic cylinder, can accelerate the test progress of the hydraulic cylinder, can quickly test the performance strengths of load resistance, pressure maintaining, sealing and the like of the hydraulic cylinder, can test the integral performance strength of the hydraulic cylinder, and greatly improves the test efficiency.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
FIG. 1 is a schematic structural diagram of a hydraulic cylinder tightness testing device according to the present invention;
FIG. 2 is a schematic structural diagram of a rectangular housing, a concave guard plate, a concave rod, an elastic cord, and an air transmission assembly of the hydraulic cylinder tightness testing device according to the present invention;
FIG. 3 is a schematic structural diagram of a rectangular housing and an air transmission assembly in the device for testing the sealing performance of a hydraulic cylinder according to the present invention;
FIG. 4 is a schematic structural diagram of a portion A in FIG. 1 of a hydraulic cylinder tightness testing device according to the present invention;
FIG. 5 is a schematic structural diagram of a portion B in FIG. 1 of a hydraulic cylinder tightness testing device according to the present invention;
FIG. 6 is a schematic structural diagram of a rectangular housing of the hydraulic cylinder tightness testing device according to the present invention;
fig. 7 is a schematic structural diagram of a concave protection plate in the hydraulic cylinder tightness testing device according to the present invention.
In the figure: 1. a test bench; 101. a fixing plate; 102. rotating the bolt; 103. a first clamping plate; 2. a support frame; 3. a rectangular housing; 301. a concave-shaped cavity; 302. a female rod; 303. a concave protection plate; 3031. a notch; 304. an elastic cord; 305. a second solenoid valve; 306. a limiting sliding plate; 307. a groove; 308. a rotating plate; 309. a first cylinder; 3010. a first piston rod; 3011. tensioning the spring; 4. a hydraulic reciprocating telescopic column; 5. testing the iron blocks; 6. a first current passing magnetic block; 7. a second flux block; 8. a second cylinder; 9. a second piston rod; 10. a second clamping plate; 11. a tension spring; 1101. a first gas pipe; 12. a second gas delivery pipe; 13. a first solenoid valve.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
Example 1:
referring to fig. 1-7, a hydraulic cylinder tightness testing device includes a testing platform 1, and further includes: the support frame 2 is fixedly connected to the test board 1; a rectangular housing 3 fixedly connected to the lower side of the upper end of the support frame 2; the manual clamping assembly is arranged on the test board 1 and is positioned right below the rectangular shell 3; the hydraulic reciprocating telescopic column 4 is fixedly connected to the upper end of the support frame 2 and is positioned in the center of the rectangular shell 3; the testing iron block 5 is connected in the rectangular shell 3 in a sliding mode, wherein the telescopic end of the hydraulic reciprocating telescopic column 4 is fixedly connected with a first electrified magnetic block 6, and an embedded groove matched with the first electrified magnetic block 6 is formed in the testing iron block 5; the pneumatic clamping components are symmetrically arranged on the inner side of the supporting frame 2 and close to the upper end of the cylinder body of the hydraulic cylinder to be tested; the gas transmission assembly is used for transmitting gas into the pneumatic clamping assembly and is arranged on the rear side of the rectangular shell 3;
the manual clamping assembly comprises a fixing plate 101, a rotating bolt 102 and a first clamping plate 103, the fixing plate 101 is symmetrically and fixedly connected to the test bench 1 and located on the inner side of the supporting frame 2, the rotating bolt 102 is rotatably connected to the fixing plate 101 through threads, and the first clamping plate 103 is rotatably connected to one end, close to the hydraulic cylinder to be tested, of the rotating bolt 102;
the air delivery assembly comprises a rotating plate 308, first air cylinders 309, first piston rods 3010 with pistons and tensioning springs 3011, grooves 307 are symmetrically formed in the inner wall of the rear side of the rectangular shell 3, the rotating plate 308 is rotatably connected in the grooves 307 through a rotating shaft, a plurality of rotating plates 308 are arranged at equal intervals, the first air cylinders 309 are transversely and fixedly connected at positions, close to the rotating plate 308, of the rectangular shell 3, the first piston rods 3010 are slidably connected in the first air cylinders 309, the tensioning springs 3011 are arranged in the first air cylinders 309, two ends of each of the tensioning springs 3011 are fixedly connected with one side, far away from the rotating plate 308, of each of the first air cylinders 309 and the first piston rods 3010 respectively, one end, far away from the tensioning springs 3011, of each of the first air cylinders 3010 is attached to the rotating plate 308, each of the first air cylinders 309 is communicated with each other through a connecting air pipe, one of the first air cylinders 309 on the outermost side is provided with an air inlet, air inlet is arranged in each air inlet, an air inlet is arranged in each air inlet, the first air inlet is arranged in the middle of the first air cylinders 309 is arranged with an air outlet, and an air outlet is arranged in each air outlet;
the pneumatic clamping assembly comprises a second cylinder 8, a second piston rod 9 with a piston, a second clamping plate 10 and a tension spring 11, the second cylinder 8 is symmetrically and fixedly connected to two sides of the supporting frame 2, the second piston rod 9 is slidably connected to the inside of the second cylinder 8, the tension spring 11 is arranged inside the second cylinder 8, two ends of the tension spring are fixedly connected to one side, close to the supporting frame 2, of the first cylinder 309 and the second piston rod 9 respectively, the second clamping plate 10 is fixedly connected to one end, far away from the tension spring 11, of the second piston rod 9, air inlets of the two second cylinders 8 are communicated with the adjacent first cylinder 309 with an air outlet through a first air pipe 1101 respectively, and a check valve and a first electromagnetic valve 13 are arranged inside air inlets and air outlets of the second cylinder 8 respectively.
After the hydraulic cylinder is produced, when the pressure maintaining performance strength of the hydraulic cylinder needs to be tested, firstly, a tester transports the device to a specified working position, then limits and fixes the device to avoid testing the hydraulic cylinder, the device displaces due to vibration, after the device is fixed, the tester can place the hydraulic cylinder to be tested between two first clamping plates 103, then simultaneously rotates two rotating bolts 102, so that the rotating bolts 102 simultaneously drive the two first clamping plates 103 to be close to each other, the position of the hydraulic cylinder to be tested is convenient to adjust, and preliminary fixing is carried out, so that the hydraulic cylinder to be tested is positioned at the central position of the rectangular shell 3;
after the hydraulic cylinder is preliminarily fixed, a hydraulic oil port of the hydraulic cylinder is communicated with a hydraulic oil pipe at the moment, hydraulic oil is conveyed into the hydraulic cylinder, a piston rod of the hydraulic cylinder moves upwards for a certain distance, and then pressure maintaining can be carried out on the piston rod;
then, the first energized magnetic block 6 can be powered off, then the suction force of the test iron block 5 disappears, then the test iron block 5 can slide downwards in the rectangular shell 3 under the action of self gravity, and then the test iron block 5 can impact the hydraulic cylinder so as to test whether the hydraulic cylinder can move downwards or not, so that whether the pressure maintaining performance strength of the hydraulic cylinder is qualified or not is judged;
further, in order to improve the impact force of the test iron block 5 on the hydraulic cylinder, after the first electrifying magnetic block 6 is powered off, the hydraulic reciprocating telescopic column 4 is controlled to extend, so that an acceleration is generated on the test iron block 5, the impact force of the test iron block 5 on the hydraulic cylinder can be improved, in order to improve the test efficiency, after the test iron block 5 finishes one-time impact on the hydraulic cylinder, the hydraulic reciprocating telescopic column 4 is controlled to drive the first electrifying magnetic block 6 to extend downwards into the embedded groove of the test iron block 5, the first electrifying magnetic block 6 is electrified, then the hydraulic reciprocating telescopic column 4 is controlled to retract, so that the test iron block 5 can be pulled back to the initial position, so that multiple impacts can be carried out on the hydraulic cylinder, and the test efficiency on the hydraulic cylinder can be further improved;
in the process of downward movement of the test iron block 5, the test iron block is firstly contacted with the rotating plate 308, then the rotating plate 308 is stressed to overcome the tension force of the tension spring 3011, the first piston rod 3010 is driven to move into the first cylinder 309, then the gas in the first cylinder 309 can be conveyed into the second cylinder 8 through the first gas pipe 1101, then the second piston rod 9 is pushed by the gas to overcome the tension force of the tension spring 11 to drive the second clamping plate 10 to move to one side of the hydraulic cylinder until the second clamping plate 10 is tightly attached to the cylinder wall of the hydraulic cylinder, so that the hydraulic cylinder can be further clamped and fixed, the stability of the hydraulic cylinder is improved, the hydraulic cylinder is prevented from being displaced or inclined under the strong impact force of the test iron block 5, a tester needs to adjust the position of the hydraulic cylinder again to influence the subsequent impact test progress, the test progress of the hydraulic cylinder is effectively ensured, and compared with the mode of testing the pressure maintaining performance of the hydraulic cylinder by maintaining the pressure of the hydraulic cylinder for a long time in the prior art and judging the overall strength of the hydraulic cylinder by arranging the rectangular shell 3, the hydraulic reciprocating telescopic column 4, the test iron block 5 and the first electrified magnetic block 6, the test progress of the hydraulic cylinder can be accelerated by impacting the hydraulic cylinder in the pressure maintaining state by the test iron block 5, so that the load resistance, pressure maintaining, sealing and other performance strengths of the hydraulic cylinder can be quickly tested, the overall performance strength of the hydraulic cylinder can be tested, the test efficiency is greatly improved, meanwhile, the manual clamping component, the pneumatic clamping component and the air conveying component are arranged, the hydraulic cylinder can be stably clamped and fixed, the stability of the hydraulic cylinder is improved during testing, and the hydraulic cylinder is prevented from being under the strong impact force of the test iron block 5, the displacement or the inclination occurs, and the tester needs to adjust the position of the hydraulic cylinder, so that the subsequent impact test progress is influenced, and the progress of the hydraulic cylinder test is effectively guaranteed.
Example 2:
referring to fig. 1 to 7, a hydraulic cylinder tightness testing device is substantially the same as that of embodiment 1, and further includes: a concave cavity 301 is formed in the inner wall of the rectangular shell 3, a concave through hole communicated with the concave cavity 301 is formed in the lower end of the rectangular shell 3, a concave rod 302 is connected in the concave cavity 301 in a sliding mode, a concave protection plate 303 is fixedly connected to the lower end of the concave rod 302, a plurality of elastic ropes 304 are fixedly connected between the upper end of the concave rod 302 and the upper end of the concave cavity 301 at equal intervals, two groups of air inlets and air outlets are symmetrically formed in two sides of the upper end of the concave cavity 301, the air outlet of the second air cylinder 8 is communicated with the air inlet of the concave cavity 301 through a second air pipe 12, and a second electromagnetic valve 305 is arranged in the air outlet of the concave cavity 301;
the concave protection plate 303 is designed to be transparent;
After the test iron block 5 finishes the impact on the hydraulic cylinder to be tested, at this moment, the hydraulic reciprocating telescopic column 4 can be made to move downwards, the hydraulic cylinder to be tested is subjected to a load test through the test iron block 5, then the first electromagnetic valve 13 can be opened, at this moment, compressed gas stored in the second cylinder 8 can enter the concave cavity 301 through the second gas pipe 12, then the concave rod 302 can be driven by air pressure to overcome the tension of the elastic rope 304, and the concave protection plate 303 is driven to move downwards out of the concave cavity 301 until being abutted against the test bench 1, so that when the hydraulic cylinder is subjected to a load test, a protection effect can be exerted on the tester, after the cylinder body of the hydraulic cylinder is broken, fragments of the cylinder body jump to the tester, the injury is caused to the tester, the protection effect on the tester is effectively improved, the safety is higher, meanwhile, the concave protection plate 303 is made to be in a transparent design, the tester is made to observe the real-time change of the hydraulic cylinder body, so that the tester can know the cylinder body strength of the hydraulic cylinder, the concave protection plate 303 is made to be adhered to the test bench 102 through the notches arranged on the concave protection plate 303, and the concave protection plate 303, thereby further improving the test effect.
Example 3:
referring to fig. 1 to 7, a hydraulic cylinder tightness testing device is substantially the same as that of embodiment 2, and further includes: test iron plate 5 is provided with the polylith, all be provided with second logical electromagnetic block 7 between per two adjacent test iron plates 5, second logical electromagnetic block 7 is embedded respectively and installs in the test iron plate 5 that per two adjacent test iron plates 5 are located the top, through set up polylith test iron plate 5 in rectangular shell 3, can carry out many times continuous impact test to the pneumatic cylinder that awaits measuring fast, need not to carry out once when the test iron plate 5 strikes the back, still need hydraulic pressure reciprocal flexible post 4 to raise it, so as to carry out impact once more, thereby the efficiency of software testing has been improved effectively.
Example 4:
referring to fig. 1 to 7, a hydraulic cylinder tightness testing device is substantially the same as that of embodiment 3, and further includes: through holes are formed in the positions, located on the lower surface of the test iron block 5, of the two sides of the rectangular shell 3, limiting sliding plates 306 are connected in the through holes in a sliding mode, and the test iron block 5 can be limited in the rectangular shell 3 when the rectangular shell is not used through the limiting sliding plates 306, so that the first electrifying magnetic block 6 and the second electrifying magnetic block 7 can adsorb and limit the test iron block 5 without being always in an electrified state, the electricity consumption is effectively reduced, and the use cost of the device is reduced;
the inboard lower extreme fixedly connected with backup pad that is close to second cylinder 8 of carriage 2, and 8 fixed connection of second cylinder set up the backup pad through the lower extreme that is close to second cylinder 8 at carriage 2 in the backup pad, can play the effect of support to second cylinder 8 to improve the stability of second cylinder 8.
Compared with the mode that the pressure maintaining performance of the hydraulic cylinder is tested by maintaining the pressure of the hydraulic cylinder for a long time in the prior art through the arrangement of the rectangular shell 3, the hydraulic reciprocating telescopic column 4, the test iron block 5 and the first electrified magnetic block 6, and the mode that the overall strength of the hydraulic cylinder is judged, the test progress of the hydraulic cylinder can be accelerated by impacting the hydraulic cylinder in the pressure maintaining state through the test iron block 5, so that the load resistance, pressure maintaining, sealing and other performance strengths of the hydraulic cylinder can be quickly tested, the overall performance strength of the hydraulic cylinder can be tested, the test efficiency is greatly improved, meanwhile, a manual clamping assembly, a pneumatic clamping assembly and an air conveying assembly are further arranged, the hydraulic cylinder can be stably clamped and fixed, the stability of the hydraulic cylinder during testing is improved, the situation that the hydraulic cylinder is displaced or inclined under the strong impact force of the test iron block 5 and needs to be adjusted by a tester again, the subsequent impact test progress is influenced, and the test progress of the hydraulic cylinder is effectively guaranteed.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a hydraulic cylinder leakproofness testing arrangement, includes testboard (1), its characterized in that still includes:
the supporting frame (2) is fixedly connected to the test board (1);
the rectangular shell (3) is fixedly connected to the lower side of the upper end of the supporting frame (2);
the manual clamping assembly is arranged on the test bench (1) and is positioned right below the rectangular shell (3);
the hydraulic reciprocating telescopic column (4) is fixedly connected to the upper end of the supporting frame (2) and is positioned at the center of the rectangular shell (3);
a test iron block (5) which is connected in the rectangular shell (3) in a sliding way,
the testing device comprises a hydraulic reciprocating telescopic column (4), a first electrified magnetic block (6) and a testing iron block (5), wherein the telescopic end of the hydraulic reciprocating telescopic column (4) is fixedly connected with the first electrified magnetic block (6), and the testing iron block (5) is provided with an embedded groove matched with the first electrified magnetic block (6);
the pneumatic clamping components are symmetrically arranged on the inner side of the supporting frame (2) and close to the upper end of the cylinder body of the hydraulic cylinder to be tested;
and the gas transmission assembly is used for transmitting gas into the pneumatic clamping assembly and is arranged on the rear side of the rectangular shell (3).
2. The tightness testing device of the hydraulic cylinder according to claim 1, wherein: the manual clamping assembly comprises a fixing plate (101), a rotating bolt (102) and a first clamping plate (103), the fixing plate (101) is symmetrically and fixedly connected to the inner side of the supporting frame (2) on the test bench (1), the rotating bolt (102) is rotatably connected to the fixing plate (101) through threads, and the first clamping plate (103) is rotatably connected to one end, close to a hydraulic cylinder to be tested, of the rotating bolt (102).
3. The tightness testing device of a hydraulic cylinder according to claim 2, characterized in that: the gas transmission assembly comprises a rotating plate (308), a first cylinder (309), a first piston rod (3010) with a piston and a tensioning spring (3011), grooves (307) are symmetrically formed in the inner wall of the rear side of the rectangular shell (3), the rotating plate (308) is rotatably connected in the grooves (307) through a rotating shaft, the rotating plate (308) is provided with a plurality of rotating plates at equal intervals, the first cylinder (309) is transversely and fixedly connected to the position, close to the rotating plate (308), of the rectangular shell (3), the first piston rod (3010) is slidably connected in the first cylinder (309), the tensioning spring (3011) is arranged in the first cylinder (309), two ends of the tensioning spring (3011) are fixedly connected with one side, far away from the rotating plate (308), of the first cylinder (309) and the first piston rod (3010) respectively, one end, far away from the tensioning spring (3011), of the first piston rod (3010) is attached to the rotating plate (308), each group of first cylinders (309) is communicated with each other through a connecting gas pipe, one of the first cylinder (309) at the outermost side is provided with a one-way valve, a gas inlet (309) is provided with a gas outlet, and a one-way valve is arranged in the middle gas inlet (309) and a gas outlet is arranged in the first cylinder (309) and a one-way valve is arranged in the middle gas inlet.
4. The tightness testing device of a hydraulic cylinder according to claim 3, characterized in that: the pneumatic clamping assembly comprises a second cylinder (8), a second piston rod (9) with a piston, a second clamping plate (10) and a tension spring (11), the second cylinder (8) is symmetrically and fixedly connected to the two sides of the support frame (2), the second piston rod (9) is slidably connected into the second cylinder (8), the tension spring (11) is arranged in the second cylinder (8), the two ends of the tension spring are respectively fixedly connected with one side, close to the support frame (2), of the first cylinder (309) and the second piston rod (9), the second clamping plate (10) is fixedly connected to one end, far away from the tension spring (11), of the second piston rod (9), the air inlet of the second cylinder (8) is communicated with the adjacent first cylinder (309) with the air outlet through a first air conveying pipe (1101), and a check valve and a first electromagnetic valve (13) are respectively arranged in the air inlet and outlet of the second cylinder (8).
5. The device for testing the tightness of a hydraulic cylinder according to claim 4, wherein: set up concave type form cavity (301) in the inner wall of rectangle casing (3), rectangle casing (3) lower extreme seted up with the communicating concave type opening of concave type form cavity (301), sliding connection has concave type pole (302) in concave type form cavity (301), concave type pole (302) lower extreme fixedly connected with concave type guard plate (303), equidistant fixedly connected with is many with stretch cord (304) between the upper end of concave type pole (302) upper end and concave type form cavity (301), two sets of air inlets and gas outlet have been seted up to the upper end bilateral symmetry of concave type form cavity (301), switch-on mutually through second gas-supply pipe (12) between the gas outlet of second cylinder (8) and the air inlet of concave type form cavity (301), be equipped with second solenoid valve (305) in the gas outlet of concave type form cavity (301).
6. The tightness testing device of a hydraulic cylinder according to claim 5, characterized in that: the concave protection plate (303) is in a transparent design.
7. The tightness testing device of a hydraulic cylinder according to claim 5, characterized in that: notches (3031) are formed in the two sides of the concave protection plate (303) and are located right above the rotating bolt (102).
8. The tightness testing device of the hydraulic cylinder according to claim 1, wherein: the test iron block (5) is provided with a plurality of blocks, every two adjacent test iron blocks (5) are provided with a second electromagnetic block (7), and the second electromagnetic blocks (7) are embedded in the test iron blocks (5) above the every two adjacent test iron blocks (5) respectively.
9. The tightness testing device of claim 8, wherein: the testing device is characterized in that through openings are formed in the positions, located on the lower surface of the testing iron block (5), of the two sides of the rectangular shell (3), and limiting sliding plates (306) are connected in the through openings in a sliding mode.
10. The tightness testing device of the hydraulic cylinder according to claim 4, wherein: the lower extreme fixedly connected with backup pad that carriage (2) inboard is close to second cylinder (8), second cylinder (8) fixed connection is in the backup pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211565595.6A CN115585960B (en) | 2022-12-07 | 2022-12-07 | Hydraulic cylinder leakproofness testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211565595.6A CN115585960B (en) | 2022-12-07 | 2022-12-07 | Hydraulic cylinder leakproofness testing arrangement |
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| CN116183117A (en) * | 2023-04-28 | 2023-05-30 | 山东福阳液压科技有限公司 | Hydraulic cylinder tightness testing device based on displacement |
| CN116818207A (en) * | 2023-08-30 | 2023-09-29 | 济宁鲁威液压科技股份有限公司 | Device and method for detecting air tightness of hydraulic element |
| CN116839819A (en) * | 2023-08-02 | 2023-10-03 | 娄底光华机械设备制造有限公司 | Detection and calibration device for digital hydraulic cylinder and application method thereof |
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| CN116183117A (en) * | 2023-04-28 | 2023-05-30 | 山东福阳液压科技有限公司 | Hydraulic cylinder tightness testing device based on displacement |
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| CN116818207A (en) * | 2023-08-30 | 2023-09-29 | 济宁鲁威液压科技股份有限公司 | Device and method for detecting air tightness of hydraulic element |
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