CN116858443B - Hydraulic cylinder tightness testing device - Google Patents

Hydraulic cylinder tightness testing device Download PDF

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Publication number
CN116858443B
CN116858443B CN202311133460.7A CN202311133460A CN116858443B CN 116858443 B CN116858443 B CN 116858443B CN 202311133460 A CN202311133460 A CN 202311133460A CN 116858443 B CN116858443 B CN 116858443B
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China
Prior art keywords
hydraulic cylinder
gear
shaped frame
type frame
interior
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CN202311133460.7A
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CN116858443A (en
Inventor
刘德权
李海芬
胡松华
樊星
吴东方
黎冠
李志伟
涂新宁
张明月
王崇治
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Haoli Machinery Yantai Co ltd
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Haoli Machinery Yantai Co ltd
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Priority to CN202311133460.7A priority Critical patent/CN116858443B/en
Publication of CN116858443A publication Critical patent/CN116858443A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/06Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B19/00Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The invention relates to the technical field of testing and discloses a hydraulic cylinder tightness testing device which comprises a water tank and an outer U-shaped frame, wherein two vertical edges of the outer U-shaped frame are respectively and fixedly arranged on two sides of the top of the water tank, an inner U-shaped frame is arranged below the transverse edge of the outer U-shaped frame, clamping seats for clamping a hydraulic cylinder are respectively and rotatably arranged on opposite side surfaces of the two vertical edges of the inner U-shaped frame, a circular ring is arranged between the two clamping seats, a plurality of bristles uniformly arranged at equal intervals are fixedly arranged on the inner wall of the circular ring, and a side plate is arranged at the bottom of the inner U-shaped frame in a sliding manner. According to the invention, the tightness test of the hydraulic cylinder can be carried out, the ring drives the brush hair to move and rotate synchronously, so that impurities adhered to the surface of the hydraulic cylinder are cleaned, the bubbles are not blocked, the test accuracy is improved, in addition, when the hydraulic cylinder enters the liquid level of the water tank, the clamping seat drives the hydraulic cylinder to rotate, each surface of the hydraulic cylinder is displayed on the side surface of the observation window, and the test accuracy, intuitiveness and convenience of the hydraulic cylinder are further improved.

Description

Hydraulic cylinder tightness testing device
Technical Field
The invention relates to the technical field of testing, in particular to a hydraulic cylinder tightness testing device.
Background
Hydraulic cylinders are one of the key elements in hydraulic systems, and have wide application in industrial production, and the performance of the hydraulic cylinders has a direct and important influence on the whole hydraulic system. Because the hydraulic cylinder generally works in a severe production environment, the hydraulic cylinder has the advantages of large load, long working time and high response speed, and is easy to fail. Once the hydraulic cylinder fails and is not tested, maintained and replaced timely and accurately, the production is affected by light weight, and safety accidents are caused by heavy weight, so that the performance of the hydraulic cylinder is very important to test.
For example, in the chinese patent with the publication number CN210889562U, the disclosed hydraulic cylinder performance testing device does not have a function of cleaning the surface of the hydraulic cylinder during the test of the hydraulic cylinder, so that the situation that the outer wall of the hydraulic cylinder is adhered with an adhesive and leaks air, and cannot emit air bubbles in water may occur during the test, and in addition, the device does not have a function of turning over the hydraulic cylinder during the test, so that the situation that the other side surfaces of the hydraulic cylinder cannot be accurately found during the observation on one side of the sealing cover, and the use effect is reduced, so that there is a need for designing a hydraulic cylinder tightness testing device.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a hydraulic cylinder tightness testing device.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a hydraulic cylinder tightness testing device, including the water tank and outer U type frame, two perpendicular limits of outer U type frame are fixed mounting respectively in water tank top both sides, and outer U type frame horizontal limit below is equipped with interior U type frame, two opposite sides of perpendicular limit of interior U type frame all rotate and are equipped with the cassette that is used for the centre gripping pneumatic cylinder, and be provided with the ring between two cassettes, ring inner wall fixed mounting has a plurality of equidistant evenly set up brush hair, and interior U type frame bottom slides and is provided with the curb plate, curb plate one side has seted up with ring looks adaptation and the circular groove that runs through, and the ring rotates to install in the circular groove inside, ring surface fixed cup joints the ring, and interior U type frame side is equipped with the rotary mechanism who is used for rotating the ring, the horizontal moving mechanism used for horizontally moving the side plates is arranged below the inner U-shaped frame, the first gears are rotatably installed on the side faces, away from the two vertical edges, of the inner U-shaped frame, the two first gears are fixedly installed on the side faces of the clamping seat respectively through connecting shafts, the contact faces of the clamping seat and the vertical edges of the inner U-shaped frame are rough faces, the first racks which are symmetrically arranged are vertically and fixedly installed in the inner bottom of the water tank, the two first racks are meshed with the two first gears respectively, a hose used for connecting the hydraulic cylinder is arranged at the bottom of the inner U-shaped frame, a suction mechanism used for inflating and exhausting the hydraulic cylinder is arranged at the top of the inner U-shaped frame, and an observation window is formed in one side of the outer portion of the water tank.
As a further aspect of the present invention, the rotation mechanism includes: the meshing gear and the second bevel gear are rotatably arranged on one side of the side plate, the meshing gear and the toothed ring are meshed with each other, the first bevel gear is rotatably arranged on the other side of the side plate, the same connecting shaft is fixedly arranged between the first bevel gear and the meshing gear, and one side of the water tank is communicated with the liquid inlet pipe and the liquid outlet pipe.
As a further technical scheme of the invention, the second bevel gear is arranged on one side of the side plate, the second bevel gear is meshed with the first bevel gear, a rotating shaft is horizontally and fixedly arranged at the center of one side of the second bevel gear, a limiting block is fixedly arranged on one side of the side plate, and the surface of the rotating shaft is rotatably arranged in the limiting block.
As a further technical scheme of the invention, a third gear is fixedly arranged at one end of the rotating shaft far away from the second bevel gear, a third rack is horizontally and fixedly arranged at one side of the inner U-shaped frame, and the third gear and the third rack are mutually meshed.
As a further technical aspect of the present invention, the horizontal movement mechanism includes: the screw rod, the second rack and the belt, the screw rod is horizontally rotatably arranged between two vertical edges of the inner U-shaped frame, and the surface of the screw rod is connected to the inside of the side plate through threads.
As a further technical scheme of the invention, the belt is rotatably arranged on one side of the inner U-shaped frame, belt wheels are respectively arranged at two ends of the inner part of the belt, the two belt wheels are rotatably arranged on one side of the vertical edge of the inner U-shaped frame, and the belt wheel positioned above is fixedly connected with the same connecting shaft with the screw rod.
As a further technical scheme of the invention, the second rack is vertically and fixedly arranged at one side of the inside of the water tank, one end of the belt wheel positioned below is fixedly provided with the second gear, and the second gear and the second rack are meshed with each other.
As a further aspect of the present invention, the suction mechanism includes: the air pump and the air pump are both arranged at the top of the transverse edge of the inner U-shaped frame, the air pump and the air pump are communicated with one three-way pipe, the other end of the three-way pipe is communicated with a hose, and the two ends of the three-way pipe, which are connected with the air pump and the air pump, are respectively provided with a second electromagnetic valve and a first electromagnetic valve.
As a further technical scheme of the invention, two symmetrically arranged electric telescopic rods are vertically and fixedly arranged at the top of the transverse edge of the outer U-shaped frame, the output shafts of the two electric telescopic rods are fixedly arranged at the top of the transverse edge of the inner U-shaped frame, a limiting rod is fixedly arranged between the two vertical edges of the inner U-shaped frame, and the surface of the limiting rod is slidably arranged in the side plate.
The beneficial effects of the invention are as follows:
firstly, according to the invention, through the movably arranged inner U-shaped frame, the rotatably arranged clamping seat, the plurality of gears and the two bevel gears, the sealing performance of the hydraulic cylinder can be tested, the ring drives the bristles to move and rotate synchronously, so that impurities adhered to the surface of the hydraulic cylinder can be cleaned, the bubbles can not be blocked when the bubbles exist, the testing accuracy is improved, in addition, when the hydraulic cylinder enters the liquid level of the water tank, the clamping seat can drive the hydraulic cylinder to rotate, so that each surface of the hydraulic cylinder can be displayed on the side surface of the observation window, the hydraulic cylinder to be tested can be checked comprehensively by staff, and the testing accuracy, the intuitiveness and the convenience of the hydraulic cylinder are further improved;
according to the invention, through the fixed air pump, the air pump and the three-way pipe, the hydraulic cylinder can be inflated when being tested, and the hydraulic cylinder can be pumped after the test is finished, so that the occurrence of safety accidents caused by overlarge pressure in the hydraulic cylinder when the hydraulic cylinder is disassembled is avoided, and the safety of the equipment during the test is further improved.
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 side view of a hydraulic cylinder tightness testing device according to the present invention;
fig. 3 is a schematic view showing the bottom structures of an outer U-shaped frame and an inner U-shaped frame of the hydraulic cylinder tightness testing device according to the present invention;
FIG. 4 is a schematic diagram of an inner U-shaped frame structure of a hydraulic cylinder tightness testing device according to the present invention;
fig. 5 is a schematic diagram of a front view structure of a hydraulic cylinder tightness testing device according to the present invention;
FIG. 6 is a schematic diagram showing a separation structure of an inner U-shaped frame and a side plate of a hydraulic cylinder tightness testing device according to the present invention;
FIG. 7 is a schematic diagram of a hydraulic cylinder tightness testing device according to the present invention, with the inner U-shaped frame, the inflator pump and the air pump removed;
fig. 8 is an enlarged schematic view of the portion a in fig. 7.
In the figure: 1. a water tank; 2. an outer U-shaped frame; 3. an inner U-shaped frame; 4. an electric telescopic rod; 5. a clamping seat; 6. a side plate; 7. a liquid inlet pipe; 8. a liquid outlet pipe; 9. a first rack; 10. a second rack; 11. a three-way pipe; 12. a circular ring; 13. a toothed ring; 14. a third gear; 15. a third rack; 16. a meshing gear; 17. a screw rod; 18. a limit rod; 19. a hose; 20. a first gear; 21. a belt; 22. a belt wheel; 23. a second gear; 24. an inflator pump; 25. an air extracting pump; 26. a first bevel gear; 27. a second bevel gear; 28. a rotating shaft; 29. a first electromagnetic valve; 30. and a second electromagnetic valve.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-8, a hydraulic cylinder tightness testing device comprises a water tank 1 and an outer U-shaped frame 2, wherein two vertical edges of the outer U-shaped frame 2 are respectively and fixedly arranged at two sides of the top of the water tank 1, an inner U-shaped frame 3 is arranged below the transverse edge of the outer U-shaped frame 2, clamping seats 5 for clamping a hydraulic cylinder are respectively and rotatably arranged on opposite sides of the two vertical edges of the inner U-shaped frame 3, a circular ring 12 is arranged between the two clamping seats 5, a plurality of equally spaced bristles are fixedly arranged on the inner wall of the circular ring 12, a side plate 6 is slidably arranged at the bottom of the inner U-shaped frame 3, a circular groove which is matched with and penetrates through the circular ring 12 is formed in one side of the side plate 6, the circular ring 12 is rotatably arranged in the circular groove, a toothed ring 13 is fixedly sleeved on the surface of the circular ring 12, a rotating mechanism for rotating the toothed ring 13 is arranged on the side surface of the inner U-shaped frame 3, a horizontal moving mechanism for horizontally moving the side plate 6 is arranged below the transverse edge of the inner U-shaped frame 3, the two vertical sides of the inner U-shaped frame 3 are respectively and rotatably provided with a first gear 20, the two first gears 20 are respectively and fixedly arranged on the side surface of the clamping seat 5 through connecting shafts, the contact surfaces of the clamping seat 5 and the vertical sides of the inner U-shaped frame 3 are rough surfaces, the first racks 9 which are symmetrically arranged are vertically and fixedly arranged in the water tank 1, the two first racks 9 are respectively meshed with the two first gears 20, the bottom of the horizontal side of the inner U-shaped frame 3 is provided with a hose 19 for connecting a hydraulic cylinder, the top of the horizontal side of the inner U-shaped frame 3 is provided with a suction mechanism for inflating and exhausting the hydraulic cylinder, one side of the outer part of the water tank 1 is provided with an observation window, through the arrangement of the device, the surfaces of the hydraulic cylinders can be cleaned and rotated synchronously when the hydraulic cylinders are detected, the air tightness of the hydraulic cylinders is not good, the hydraulic cylinders can be seen clearly and intuitively, the situation that bubbles are blocked and the test is not clearly seen is avoided.
Referring to fig. 1-4, in a preferred embodiment, the rotation mechanism comprises: the meshing gear 16 and the second bevel gear 27, meshing gear 16 rotates to be installed in curb plate 6 one side, and meshing gear 16 and ring gear 13 intermesh, curb plate 6 opposite side rotates to be installed first bevel gear 26, and fixed mounting has same connecting axle between first bevel gear 26 and the meshing gear 16, 1 one side intercommunication of water tank has feed liquor pipe 7 and drain pipe 8, second bevel gear 27 sets up in curb plate 6 one side, and second bevel gear 27 and first bevel gear 26 intermesh, second bevel gear 27 one side center department horizontal fixed mounting has pivot 28, curb plate 6 one side still fixed mounting has the stopper, and pivot 28 surface rotation is installed in the stopper inside, the one end fixed mounting that pivot 28 kept away from second bevel gear 27 has third gear 14, and interior U type frame 3 one side horizontal fixed mounting has third rack 15, third gear 14 and third rack 15 intermesh, through the setting of slewing mechanism, be used for when curb plate 6 drives ring 12 horizontal migration, can be synchronous make the brush hair on the ring 12 rotate and make it clean the pneumatic cylinder, the non-adhesive thing on the pneumatic cylinder has been guaranteed when testing.
Referring to fig. 2-6, in a preferred embodiment, the horizontal movement mechanism comprises: the screw rod 17, the second rack 10 and the belt 21, the screw rod 17 is installed between two vertical edges of the inner U-shaped frame 3 in a horizontal rotation mode, the surface of the screw rod 17 is connected inside the side plate 6 through threads, the belt 21 is arranged on one side of the inner U-shaped frame 3 in a rotation mode, two belt wheels 22 are arranged at two ends of the inner portion of the belt 21 in a rotation mode, two belt wheels 22 are installed on one side of the vertical edge of the inner U-shaped frame 3 in a rotation mode, the belt wheel 22 located above the belt wheels and the screw rod 17 are fixedly connected with the same connecting shaft, the second rack 10 is vertically and fixedly installed on one side of the inner portion of the water tank 1, one end of the belt wheel 22 located below is fixedly provided with the second gear 23, the second gear 23 is meshed with the second rack 10 in a mutual meshing mode, and through the arrangement of the horizontal movement mechanism, the side plate 6 and the circular ring 12 are enabled to move in the horizontal direction, the third gear 14 is driven to move on the third rack 15, and the circular ring 12 is enabled to rotate conveniently.
Referring to fig. 5-8, in a preferred embodiment, the pumping mechanism comprises: the air pump 25 and the air pump 24 are arranged at the top of the transverse edge of the inner U-shaped frame 3, the air pump 25 and the air pump 24 are communicated with one three-way pipe 11, the other end of the three-way pipe 11 is communicated with a hose 19, two ends of the three-way pipe 11, which are connected with the air pump 25 and the air pump 24, are respectively provided with a second electromagnetic valve 30 and a first electromagnetic valve 29, the top of the transverse edge of the outer U-shaped frame 2 is vertically and fixedly provided with two symmetrically arranged electric telescopic rods 4, the output shafts of the two electric telescopic rods 4 are fixedly arranged at the top of the transverse edge of the inner U-shaped frame 3, a limiting rod 18 is fixedly arranged between the two vertical edges of the inner U-shaped frame 3, the surface of the limiting rod 18 is slidably arranged inside a side plate 6, the hydraulic cylinder can be inflated when the hydraulic cylinder is tested, and air inside the hydraulic cylinder can be pumped after the test is finished, so that safety accidents caused by overlarge air pressure difference between the hydraulic cylinder and the outside are avoided when the hydraulic cylinder is disassembled.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: firstly, a hydraulic cylinder is arranged between two clamping seats 5, the hydraulic cylinder is clamped by the two clamping seats 5, then a second electromagnetic valve 30 is closed, a first electromagnetic valve 29 is opened, the hydraulic cylinder is inflated by an inflator pump 24, then the inner U-shaped frame 3 is driven to move downwards by an electric telescopic rod 4, the inner U-shaped frame 3 moves to drive connecting parts such as a side plate 6, a circular ring 12, a first gear 20, a second gear 23 and the like to move downwards, the second gear 23 moves downwards to be in contact with a second rack 10 and rotate the second gear 23, the second gear 23 rotates to drive a belt 21 and a belt pulley 22 to rotate, the belt pulley 22 rotates to drive a screw 17 to rotate, the screw 17 rotates to drive the side plate 6 to move, the side plate 6 moves to drive the circular ring 12, the toothed ring 13, a first bevel gear 26, a second bevel gear 27, a third gear 14 and a meshing gear 16 due to the arrangement of the third rack 15, the third gear 14 can rotate when moving, the third gear 14 rotates to drive the rotating shaft 28 to rotate, the rotating shaft 28 rotates to drive the second bevel gear 27 to rotate, the second bevel gear 27 rotates to drive the first bevel gear 26 to rotate, the first bevel gear 26 rotates to drive the meshing gear 16 to rotate, the meshing gear 16 rotates to drive the toothed ring 13 to rotate, the toothed ring 13 rotates to drive the circular ring 12 and bristles to rotate, impurities adhered to the surface of the hydraulic cylinder can be cleaned, when the hydraulic cylinder moves into the liquid level, the circular ring 12 moves to the clamping plate of the clamping seat 5, the second gear 23 and the second rack 10 are not meshed, the situation that the circular ring 12 blocks the hydraulic cylinder to cause false testing is avoided, at the moment, the first gear 20 contacts with the first rack 9, the first gear 20 rotates to drive the clamping seat 5 to rotate, the clamping seat 5 rotates to drive the hydraulic cylinder to rotate, the hydraulic cylinder can be visually and comprehensively observed on one side of the water tank 1, the accuracy and convenience of testing are guaranteed, in addition, the hydraulic cylinder is enabled to move upwards after the testing is finished, before the hydraulic cylinder is removed, the first electromagnetic valve 29 is required to be closed, the second electromagnetic valve 30 is required to be opened, gas in the hydraulic cylinder is pumped out through the air pump 25, the internal air pressure of the hydraulic cylinder is identical with the external air pressure, the safety of the hydraulic cylinder when the hydraulic cylinder is detached is guaranteed, and the using effect of the equipment is improved.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (2)

1. The utility model provides a hydraulic cylinder tightness testing device, includes water tank (1) and outer U type frame (2), its characterized in that, two perpendicular limits of outer U type frame (2) are fixed mounting respectively in water tank (1) top both sides, and outer U type frame (2) horizontal limit below is equipped with interior U type frame (3), the side that two perpendicular limits of interior U type frame (3) are opposite all rotates and is equipped with clamping seat (5) that are used for the centre gripping pneumatic cylinder, and is provided with ring (12) between two clamping seats (5), a plurality of equidistant brush hair that evenly set up of ring (12) inner wall fixed mounting, and interior U type frame (3) bottom slip is provided with curb plate (6), curb plate (6) one side offered with ring (12) looks adaptation and run through the circular slot, and ring (12) rotate and install in the circular slot inside, ring (12) fixed surface cup joints toothed ring (13), and interior U type frame (3) side is equipped with the rotary mechanism that is used for rotating toothed ring (13), interior U type frame (3) side (3) are equipped with a plurality of equidistant evenly sets up in two horizontal sides (20) and installs the side face that are perpendicular side of side (20) respectively in the horizontal side of side (20 respectively, first rack (9) that two symmetries set up are vertically fixed mounting in water tank (1), and two first racks (9) respectively with two first gear (20) meshing, interior U type frame (3) horizontal limit bottom is equipped with hose (19) that are used for connecting the pneumatic cylinder, and interior U type frame (3) horizontal limit top is equipped with the suction mechanism that is used for aerifing and bleed to the pneumatic cylinder, observation window has been seted up to the outside one side of water tank (1), slewing mechanism includes: meshing gear (16) and second bevel gear (27), meshing gear (16) rotate and install in curb plate (6) one side, and meshing gear (16) and ring gear (13) intermesh, curb plate (6) opposite side rotation is installed first bevel gear (26), and fixed mounting has same connecting axle between first bevel gear (26) and meshing gear (16), water tank (1) one side intercommunication has feed liquor pipe (7) and drain pipe (8), second bevel gear (27) set up in curb plate (6) one side, and second bevel gear (27) and first bevel gear (26) intermesh, second bevel gear (27) one side center department horizontal fixed mounting has pivot (28), curb plate (6) one side is still fixed mounting has the stopper, and pivot (28) surface rotation is installed inside the stopper, one end fixed mounting of second bevel gear (27) is kept away from to pivot (28) has third gear (14), and interior U type frame (3) one side horizontal fixed mounting has third rack (15), third gear (14) and third rack (15) are including moving the horizontal rack (15) intermeshing: lead screw (17), second rack (10) and belt (21), lead screw (17) horizontal rotation is installed in interior U type frame (3) between two perpendicular limits, and lead screw (17) surface is inside curb plate (6) through threaded connection, belt (21) rotate set up in interior U type frame (3) one side, and belt (21) inside both ends all are equipped with band pulley (22), two band pulley (22) are all rotated and are installed in interior U type frame (3) perpendicular limit one side, and are located the same connecting axle of fixedly connected with between band pulley (22) and the lead screw (17) of top, the vertical fixed mounting of second rack (10) is in the inside one side of water tank (1), and is located band pulley (22) one end fixed mounting of below has second gear (23), second gear (23) and second rack (10) intermeshing, suction mechanism includes: the three-way air pump comprises an air pump (25) and an air pump (24), wherein the air pump (25) and the air pump (24) are arranged at the top of the transverse edge of the inner U-shaped frame (3), the air pump (25) and the air pump (24) are communicated with one three-way pipe (11), the other end of the three-way pipe (11) is communicated with a hose (19), and the two ends of the three-way pipe (11) connected with the air pump (25) and the air pump (24) are respectively provided with a second electromagnetic valve (30) and a first electromagnetic valve (29).
2. The hydraulic cylinder tightness testing device according to claim 1, wherein two symmetrically arranged electric telescopic rods (4) are vertically and fixedly arranged at the tops of the transverse edges of the outer U-shaped frame (2), output shafts of the two electric telescopic rods (4) are fixedly arranged at the tops of the transverse edges of the inner U-shaped frame (3), a limiting rod (18) is fixedly arranged between the two vertical edges of the inner U-shaped frame (3), and the surface of the limiting rod (18) is slidably arranged inside the side plate (6).
CN202311133460.7A 2023-09-05 2023-09-05 Hydraulic cylinder tightness testing device Active CN116858443B (en)

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CN117168707B (en) * 2023-11-02 2024-04-05 南通市红星空压机配件制造有限公司 Tightness detection device is used in valve production

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CN215745030U (en) * 2021-03-03 2022-02-08 塔威新材料科技(上海)有限公司 Cleaning device of liquid protection film production equipment
CN113405732A (en) * 2021-06-02 2021-09-17 赵雅清 Precession vortex flowmeter gas tightness detection device
CN114870500A (en) * 2022-06-15 2022-08-09 王杰 Aeration sand setting sewage treatment device and treatment method
CN115127741A (en) * 2022-06-29 2022-09-30 江西应用技术职业学院 Clamping device for detecting air tightness of hub of electric automobile
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CN116001353A (en) * 2022-12-27 2023-04-25 青岛乐康包装有限公司 Adhesive deposite device is used in gift box production
CN219434275U (en) * 2023-02-17 2023-07-28 浙江之明泵业有限公司 Diving pump air tightness detection table
CN116657367A (en) * 2023-05-30 2023-08-29 江苏科美新材料有限公司 Ironing and shaping device for producing superfine fiber synthetic leather knapsack

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