CN116878754A - Air tightness detection device and detection method for cylinder barrel of hydraulic cylinder - Google Patents
Air tightness detection device and detection method for cylinder barrel of hydraulic cylinder Download PDFInfo
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- CN116878754A CN116878754A CN202310653127.2A CN202310653127A CN116878754A CN 116878754 A CN116878754 A CN 116878754A CN 202310653127 A CN202310653127 A CN 202310653127A CN 116878754 A CN116878754 A CN 116878754A
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- 238000001514 detection method Methods 0.000 title claims abstract description 81
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 74
- 238000007789 sealing Methods 0.000 claims description 43
- 239000011521 glass Substances 0.000 claims description 39
- 238000001125 extrusion Methods 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 238000001179 sorption measurement Methods 0.000 claims description 2
- 239000010720 hydraulic oil Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000008149 soap solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/02—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by gauge glasses or other apparatus involving a window or transparent tube for directly observing the level to be measured or the level of a liquid column in free communication with the main body of the liquid
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention belongs to the technical field of hydraulic cylinders, in particular to an air tightness detection device and a detection method for a cylinder barrel of a hydraulic cylinder, which aim at the operation requirement that the cylinder barrels with different sizes are difficult to limit, fix and detect in an existing detection mode, and meanwhile, the positions of air bubbles generated by the cylinder barrel cannot be observed in an omnibearing manner, so that the detection efficiency is reduced. The air tightness detection device for the cylinder barrel of the hydraulic cylinder disclosed by the invention has the advantages that the cylinder barrels with different sizes are limited, fixed and detected, meanwhile, the slow leakage condition is detected rapidly, and the accuracy and the detection efficiency of the tightness detection of the hydraulic cylinder are improved.
Description
Technical Field
The invention relates to the technical field of air tightness detection of hydraulic cylinders, in particular to an air tightness detection device and method for cylinder barrels of hydraulic cylinders.
Background
The sealing performance of the hydraulic cylinder is a key index for measuring the quality of the hydraulic cylinder. The tightness is mainly reflected in whether leakage exists, including internal leakage and external leakage, and a plurality of factors influencing the leakage, such as whether a hydraulic sealing element is properly damaged or not, whether the machining precision of a piston, the inner wall of a cylinder barrel, a piston rod and a guide sleeve reach the standard or not, the cleanliness of hydraulic oil and the like are researched, and beneficial results are obtained. However, there have been few studies on the air tightness of hydraulic cylinder assemblies, which include many welds, the materials of which are themselves defective, which would lead to leakage of the hydraulic cylinder. Therefore, the air tightness detection of the hydraulic cylinder barrel assembly is necessary, whether a leakage point exists in the cylinder barrel or not can be found before the hydraulic cylinder assembly so as to take measures, a series of labor cost, scrapping and other conditions caused by the disassembly after the assembly test are avoided, and the production efficiency of the hydraulic cylinder is effectively improved.
The existing hydraulic cylinder assembly comprises a plurality of welding seams, so that the air tightness detection of the hydraulic cylinder assembly is necessary, and the existing detection mode generally uses a soaking (air bubble) detection method, which is a traditional air tightness detection method. The medium is mainly water and soap solution. The device is characterized in that a tested workpiece is sealed, gas with certain pressure is applied to the inner cavity of the tested workpiece, then the tested workpiece is immersed into a water tank to observe whether bubbles are generated or not, the existing detection mode is not easy to limit, fix and detect cylinder barrels with different sizes, and meanwhile the positions of the bubbles generated by the cylinder barrels cannot be observed in an omnibearing manner, so that the detection efficiency is reduced.
The application number is CN201810081979.8 discloses a hydraulic cylinder tightness detection device, including the pneumatic cylinder, set up hydraulic push rod in the pneumatic cylinder, set up hydraulic oil seal circle on hydraulic push rod, set up the liquid medium sealing circle in the inner chamber of pneumatic cylinder, the liquid medium sealing circle separates the inner chamber of pneumatic cylinder into the hydraulic oil storage chamber of lower part and the working chamber on upper portion, the upper portion of working chamber sets up the liquid medium export, the lower part of working chamber sets up the liquid medium entry, the lateral wall in hydraulic oil storage chamber sets up hydraulic oil interface, hydraulic oil interface passes through hydraulic oil pipe and connects the energy storage ware, set up pressure sensor on hydraulic oil pipe, pressure sensor adopts the pressure sensor who takes the demonstration, set up pneumatic cylinder exit end seal cover plate on pneumatic cylinder upper portion, the liquid medium export sets up on pneumatic cylinder exit end seal cover plate. The invention mainly detects whether the sealing ring of the hydraulic cylinder has leakage or not in real time by a method for monitoring the pressure change of the hydraulic oil cavity. Obviously, the method belongs to a static pressure detection method, is not applicable to the situation of slow leakage of the hydraulic cylinder, and has very low air tightness detection speed.
Therefore, for the leakage situation, pressurization is often needed, so that the activity of gas molecules in the hydraulic cylinder is forced to be improved, the gas leakage speed is increased, the loading pressure is difficult to determine under the condition that the leakage situation is uncertain, and the improvement of the accuracy and the detection efficiency of the tightness detection of the hydraulic cylinder is a difficult problem.
Disclosure of Invention
The invention discloses a device and a method for detecting the air tightness of a cylinder barrel of a hydraulic cylinder, and aims to solve the technical problems that the existing detection mode in the background technology is not easy to detect the slow leakage, and the accuracy and the detection efficiency of the tightness detection of the hydraulic cylinder are improved, so that the detection efficiency is reduced.
The invention provides an air tightness detection device of a hydraulic cylinder barrel, which comprises a detection supporting table and a sealing water tank, wherein a limiting and fixing assembly is arranged inside the sealing water tank, the limiting and fixing assembly comprises a support plate, a sealing plug plate, a hollow installation round frame, a rotating shaft and a speed changing motor, round holes I are formed in two sides of the sealing water tank, hollow rotating pipes are connected inside the two round holes I through bearings, extrusion round sliding rods are connected inside the two hollow rotating pipes in a sliding manner, clamping blocks are fixedly connected to one sides of the two extrusion round sliding rods, the same cylinder barrel body is movably connected to one side opposite to the sealing plug plate, clamping frames are fixedly connected to one sides of the two sealing plug plates, a telescopic cylinder is fixedly connected to one side of the hollow installation round frame, one side of the telescopic cylinder is fixedly connected with one side of the extrusion round sliding rod, an intermittent gear is fixedly connected to the driving end of the speed changing motor, one side of the two support plate is fixedly connected with a mounting panel, one side of the two hollow installation round frame is fixedly connected with a driving gear through a bearing, one side of the two guide arms is fixedly connected to one side of the two guide seats, two guide arms are fixedly connected to one side of the two guide seats are fixedly connected to the two opposite to the rotating shafts, two guide seats are fixedly connected to the two opposite sides of the rotating shafts, one side of the two guide seats are fixedly clamped by the same rotating shaft, and are fixedly connected to the two guide seats are respectively-clamped by the two guide arms, and are fixedly clamped by the corresponding rotating shafts, and are fixedly connected to the two guide seats are fixedly arranged inside the two guide seats, and each guide seats are fixedly arranged inside the corresponding round seat and each guide seat is fixedly connected to the corresponding round cylinder, and each clamping cylinder is provided with a lifting seat, the lifting clamping seat is fixedly connected with the same reset spring on the opposite side of the support plate, a transparent glass tube is arranged on one side of the water tank, the top end of the transparent glass tube is connected with an air pressure sensor in the controller through an air tube, a bottom end bent tube of the transparent glass tube is communicated with the bottom of the water tank, and grid plates distributed in a staggered mode are arranged in the bottom end bent tube of the transparent glass tube.
Through being provided with spacing fixed subassembly, when carrying out the gas tightness to the cylinder body and examining, at first insert the both sides of cylinder body with sealed cock plate, then fill the nitrogen gas of certain pressure in to the cylinder body through the inflation hole on the sealed cock plate, then put into the cylinder body on the installation faceplate, lift grip block on the installation faceplate receives gravity decline this moment, the centre gripping arm that is located the lift grip block both sides receives the support of lift grip block simultaneously, make spacing gyro wheel form triangle distribution and carry out the centre gripping to the cylinder body, simultaneously in the cylinder body centre gripping process to different sizes, make the central altitude of cylinder body keep unchanged, then start flexible cylinder, make the extrusion round slide bar remove in the inside hollow rotatory pipe, make the fixture block form the extrusion force in the card frame inside to the sealed cock plate outside, make the opening part of sealed cock plate closely laminate the cylinder body, when observing through the cylinder body outside of having no bubble in the sealed water tank, can drive intermittent type gear through the variable speed motor, make tooth piece on the intermittent type gear and drive gear mesh, thereby make the inside body intermittent type that is located the sealed water tank rotate, simultaneously, through fixed position detection of can be carried out the position is fixed, thereby the cylinder is carried out to the position is restricted to the cylinder.
In a preferred embodiment, an adjusting assembly is provided inside the sealed water tank, and the adjusting assembly includes a guide rail.
In a preferred scheme, the inside sliding connection of guide rail has two removal seats, and the one side of removal seat is connected with the one side of extension board fixedly.
In a preferred scheme, two round holes III have all been seted up to one side of moving the seat, and the inside of two round holes III is all fixedly connected with screw-nut cover, and round hole IV has all been seted up to sealed water tank's both sides, and the inside of two round holes IV is connected with same two-way lead screw through the bearing, and two-way lead screw passes through threaded connection in the inside of two screw-nut covers, and two-way lead screw's outside fixedly connected with adjustment handle.
Through being provided with adjusting part, when detecting the cylinder body, can be according to the length of cylinder body to through rotating the adjustment handle, drive two-way lead screw through the adjustment handle and rotate, make two-way lead screw drive the removal seat that is located outside the screw nut cover of both sides two-way in the direction track remove, thereby be convenient for spacing fixed subassembly is fixed the cylinder body of different length, thereby promotes its detection efficiency.
The invention also provides a method for detecting the air tightness of the cylinder barrel of the hydraulic cylinder, which comprises the following steps:
1) Placing elastic air bag balls in the cylinder barrel body, inserting sealing plug plates into two sides of the cylinder barrel body, and then filling nitrogen with certain pressure into the cylinder barrel body through inflation holes in the sealing plug plates;
2) The cylinder barrel body is placed on the mounting panel, triangular distribution is formed through the limiting rollers to clamp the cylinder barrel body, and meanwhile, the center height of the cylinder barrel body is kept unchanged in the clamping process of the cylinder barrel bodies with different sizes;
3) Starting a telescopic cylinder to enable the extrusion round sliding rod to move in the hollow rotary tube, enabling the clamping block to form extrusion force on the outer side of the sealing plug plate in the clamping frame, enabling the sealing plug plate to be closely attached to the opening of the cylinder barrel body, driving the intermittent gear through the speed change motor by starting the speed change motor, enabling the tooth block ends on the intermittent gear to be meshed with the driving gear intermittently, and enabling the cylinder barrel body located in the sealing water tank to rotate intermittently;
4) On the one hand, whether the water tank generates bubbles is observed through the observation window, on the other hand, the liquid level change in the transparent glass tube is intuitively observed through observing the scale mark on one side of the transparent glass tube, and meanwhile, the air pressure value is detected through the air pressure sensor and fed back to the controller, and an air leakage alarm is sent out to judge whether the hydraulic cylinder leaks air.
5) After the detection is finished, the valve is opened, then the pump body is started, the detection water in the sealed water tank is extracted through the pump body, the used detection water is filtered through the filter plates in the circulating filter tank, and then the detection water is discharged into the sealed water tank through the discharge pipe.
Therefore, the air tightness detection device for the cylinder barrel of the hydraulic cylinder has the advantages that the cylinder barrels with different sizes are limited and fixedly detected, and meanwhile, the positions of air bubbles generated by the cylinder barrel are comprehensively observed, so that the detection efficiency is improved.
Drawings
Fig. 1 is a schematic main structure diagram of an air tightness detection device for a cylinder barrel of a hydraulic cylinder;
fig. 2 is a schematic side view of a device for detecting air tightness of a cylinder barrel of a hydraulic cylinder according to the present invention;
fig. 3 is a schematic diagram of a limit fixing assembly of an air tightness detection device for a cylinder barrel of a hydraulic cylinder;
FIG. 4 is an enlarged schematic view of the portion A of FIG. 5;
fig. 5 is a schematic diagram of a mounting panel structure of a device for detecting air tightness of a cylinder barrel of a hydraulic cylinder according to the present invention;
fig. 6 is a schematic structural diagram of an adjusting component of the air tightness detecting device of the cylinder barrel of the hydraulic cylinder;
fig. 7 is a schematic structural diagram of a circulation assembly of the air tightness detection device of the cylinder barrel of the hydraulic cylinder;
fig. 8 is a schematic cross-sectional view of a transparent glass tube of the air tightness detecting device for a cylinder barrel of a hydraulic cylinder.
In the figure: 1. detecting a supporting table; 2. sealing the water tank; 3. a cover plate; 4. a cylinder body; 5. a limit fixing component; 501. a support plate; 502. installing a panel; 503. sealing the plug plate; 504. a clamping frame; 505. a hollow rotating tube; 506. extruding a round slide bar; 507. a clamping block; 508. a hollow installation round frame; 509. a telescopic cylinder; 510. a drive gear; 511. a mounting base; 512. an intermittent gear; 513. a variable speed motor; 514. a transparent viewing window; 515. limiting guide seats; 516. lifting the clamping seat; 517. a return spring; 518. a rotation shaft; 519. a rotating shaft; 520. a clamping arm; 521. limiting idler wheels; 522. a rotating shaft; 523. a contact wheel; 6. an adjustment assembly; 601. a guide rail; 602. a two-way screw rod; 603. a movable seat; 604. a screw-nut sleeve; 605. adjusting the handle; 7. a circulation assembly; 701. a pump body; 702. a discharge pipe; 703. a circulation pipe; 704. a circulating filter box; 705. a filter plate; 706. drawing out a pipe; 707. a valve; 8. a transparent glass tube; 801. a grid plate; 9. an air pipe; 10. and a controller.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
The invention discloses an air tightness detection device for a cylinder barrel of a hydraulic cylinder, which is mainly applied to the technical problems that the existing detection mode is not easy to detect the slow leakage, and the accuracy and the detection efficiency of the tightness detection of the hydraulic cylinder are improved, so that the detection efficiency is reduced.
Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, an air tightness detection device for a cylinder barrel of a hydraulic cylinder comprises a detection supporting table 1 and a sealing water tank 2, wherein a limit fixing component 5 is arranged in the sealing water tank 2, the limit fixing component 5 comprises a supporting plate 501, a sealing plug plate 503, a hollow installation round frame 508, a rotating shaft 518, a rotating shaft 522 and a variable speed motor 513, round holes I are formed in two sides of the sealing water tank 2, the interiors of the two round holes I are connected with a hollow rotating pipe 505 through bearings, the interiors of the two hollow rotating pipes 505 are slidably connected with extrusion round slide rods 506, one sides of the two extrusion round slide rods 506 are fixedly connected with clamping blocks 507, one side opposite to the two sealing plug plates 503 is movably connected with the same cylinder barrel body 4, one sides of the two sealing plug plates 503 are fixedly connected with clamping frames 504, one sides of the two hollow installation round frames 508 are fixedly connected with telescopic cylinders 509, one side of the telescopic cylinder 509 is fixedly connected with one side of the extruding round slide bar 506, the driving end of the variable speed motor 513 is fixedly connected with an intermittent gear 512, the outer parts of the two hollow installation round frames 508 are fixedly connected with a driving gear 510, one sides of the two support plates 501 are fixedly connected with installation panels 502, one sides of the two installation panels 502 are fixedly connected with a limit guide seat 515, the inner part of the limit guide seat 515 positioned on one side is slidably connected with a lifting clamping seat 516, one reset spring 517 is fixedly connected with the opposite side of the lifting clamping seat 516 and the support plate 501, the outer parts of the two rotating shafts 518 are fixedly connected with clamping arms 520, two sides of the two clamping arms 520 and the lifting clamping seat 516 are provided with round holes II, the inner parts of the two opposite round holes II are connected with rotating shafts 519 through bearings, the outer parts of each rotating shaft 519 are fixedly connected with limit idler wheels 521, the outside of a plurality of pivots 522 is all fixedly connected with conflict wheel 523, one side of sealed water tank is provided with transparent glass pipe 8, the pressure sensor in the controller 10 is passed through to the top of transparent glass pipe 8, the bottom return bend of transparent glass pipe 8 communicates with sealed water tank 2's bottom, and be provided with the grid board 801 of crisscross distribution in the bottom return bend of transparent glass pipe 8, because the setting of grid board 801 can effectively eliminate sealed water tank 2 in the water level vibration transfer to transparent glass pipe 8, prevent that the liquid level in transparent glass pipe 8 from sending out vibration, wherein, transparent glass pipe 8 pipe diameter is less than 1cm, according to liquid pressure formula P=ρgh, when the pressure in the sealed water tank 2 changes, the pressure ΔP=ρgΔh that changes, because transparent glass pipe 8's pipe diameter is very little, then the pressure in the sealed water tank takes place less change, will make the liquid level in transparent glass pipe 8 rise, be provided with the scale mark on one side of transparent glass pipe 8, can observe the liquid level change in transparent glass pipe 8 simultaneously, because transparent glass pipe 8's top passes through the pressure sensor in the controller 10 is connected to the pipe 9, the pressure sensor in the transparent glass pipe 8, the pressure sensor changes, simultaneously, can be judged to the pressure sensor in the pressure sensor, the pressure sensor changes.
In a specific application scenario, when the air tightness of the cylinder body 4 is detected, firstly, an elastic air bag ball is put into the cylinder body 4, the sealing plug plate 503 is inserted into two sides of the cylinder body 4, then nitrogen with certain pressure is filled into the cylinder body 4 through an air hole on the sealing plug plate 503, the nitrogen is added because the nitrogen is not dissolved in water, when air leakage is avoided, the air pressure in the sealing water tank 2 is detected inaccurately, then the cylinder body 4 is put into the mounting panel 502, at the moment, the lifting clamping seat 516 on the mounting panel 502 is lowered by gravity, meanwhile, the clamping arms 520 positioned at two sides of the lifting clamping seat 516 are supported by the lifting clamping seat 516, so that the limiting rollers 521 form triangular distribution to clamp the cylinder body 4, and meanwhile, in the process of clamping the cylinder bodies 4 with different sizes, the central height of the cylinder body 4 is kept unchanged, then, the telescopic cylinder 509 is started to enable the extrusion round sliding rod 506 to move in the hollow rotary tube 505, the clamping block 507 forms extrusion force on the outer side of the sealing plug plate 503 in the clamping frame 504, the sealing plug plate 503 is tightly attached to the opening of the cylinder barrel body 4, the intermittent gear 512 is driven by the variable speed motor 513 through the start of the variable speed motor 513, the gap between the tooth block end on the intermittent gear 512 and the driving gear 510 is meshed, the cylinder barrel body 4 positioned in the sealing water tank 2 intermittently rotates, the limiting and fixing detection can be carried out on cylinders with different sizes through the limiting and fixing assembly 5, meanwhile, the cylinder barrel body 4 intermittently rotates in the sealing water tank 2, so that the omnibearing air tightness detection of the cylinder barrel is rapidly realized, once air leakage occurs, on one hand, air bubbles can be observed through the observation window, on the other hand, after the air leakage, the air pressure in the sealed water tank 2 increases, because the pipe diameter of the transparent glass pipe 8 is very small, the pressure in the sealed water tank changes slightly, the liquid level in the transparent glass pipe 8 can be increased, the scale marks are arranged on one side of the transparent glass pipe 8, the liquid level change in the transparent glass pipe 8 can be visually observed, whether the hydraulic cylinder leaks air can be visually seen, meanwhile, the top end of the transparent glass pipe 8 is connected with the air pressure sensor in the controller 10 through the air pipe 9, and the air pressure at the top of the glass pipe 8 increases when the liquid level in the transparent glass pipe 8 changes, so that the air pressure value is detected through the air pressure sensor and fed back to the controller, and an air leakage alarm is given out.
According to the invention, the cylinder barrel body 4 intermittently rotates in the sealed water tank 2, the elastic air bag ball in the cylinder barrel body 4 continuously bounces and deforms in the cylinder barrel, and meanwhile, the volume of the elastic air bag ball also changes, so that gas molecules in the cylinder barrel are more active, the leakage speed of gas in the cylinder barrel is increased, and even if slow leakage occurs in the cylinder barrel, the omnibearing air tightness detection of the cylinder barrel can be realized rapidly through the transparent glass tube 8 and the hydraulic sensor.
Referring to fig. 1 and 6, an adjusting assembly 6 is provided inside the sealed water tank 2, and the adjusting assembly 6 includes a guide rail 601.
Referring to fig. 6, two moving seats 603 are slidably connected to the inside of the guide rail 601, and one side of the moving seat 603 is fixedly connected to one side of the support plate 501.
Referring to fig. 1 and 6, a third round hole is formed in one side of each of the two moving seats 603, a fourth round hole is formed in each of two sides of the sealing water tank 2, the same bidirectional screw 602 is connected to the inside of the fourth round hole through a bearing, the bidirectional screw 602 is connected to the inside of the two screw nut sleeves 604 through threads, and an adjusting handle 605 is fixedly connected to the outside of the bidirectional screw 602.
In specific application scenario, when detecting cylinder body 4, can be according to the length of cylinder body 4 to through rotating adjustment handle 605, drive two-way lead screw 602 through adjustment handle 605 and rotate, make two-way lead screw 602 drive the removal seat 603 that is located outside the screw nut cover 604 of both sides and two-way removal in guide track 601, thereby be convenient for spacing fixed subassembly 5 fix cylinder body 4 of different length, thereby promote its detection efficiency.
Referring to fig. 1 and 7, one side of the inspection support table 1 is provided with a circulation assembly 7, and the circulation assembly 7 includes a circulation filter box 704.
Referring to fig. 7, filter plates 705 are fixedly connected to opposite sides of the circulation filter box 704 at equal intervals, and one side of each filter plate 705 is provided with adsorption holes at equal intervals.
Referring to fig. 1 and 7, a drain hole is formed at one side of the sealed water tank 2, a suction pipe 706 is fixedly connected to the inside of the drain hole, a valve 707 is connected to the outside of the suction pipe 706 through a flange, and the other end of the suction pipe 706 is connected to the inside of the circulation filter tank 704.
Referring to fig. 1 and 7, a pump body 701 is fixedly connected to one side of the detection support table 1, and a discharge end of the pump body 701 is connected to the inside of the sealing water tank 2 through a discharge pipe 702, and a water inlet end of the pump body 701 is connected to the inside of the circulation filter tank 704 through a circulation pipe 703.
In a specific application scenario, after the detection water in the sealed water tank 2 is used for a long time, the valve 707 can be opened, then the pump body 701 is started, the detection water in the sealed water tank 2 is extracted through the pump body 701, the used detection water is filtered by the plurality of filter plates 705 in the circulating filter tank 704, and then the detection water is discharged into the sealed water tank 2 through the discharge pipe 702, so that water resources can be saved.
Referring to fig. 1 and 2, an observation port is formed on one side of the sealed water tank 2, a transparent observation window 514 is fixedly connected to the inside of the observation port, and a mounting seat 511 is fixedly connected to one side of the detection support table 1.
Referring to fig. 1, a cover plate 3 is connected to one side of a sealed water tank 2 by a hinge.
The detection method of the air tightness detection device of the hydraulic cylinder barrel comprises the following steps of:
1) Placing elastic air bag balls in the cylinder body 4, inserting the sealing plug plates 503 into two sides of the cylinder body 4, and then filling nitrogen with certain pressure into the cylinder body 4 through the air holes on the sealing plug plates 503;
2) The cylinder body 4 is placed on the mounting panel 502, at the moment, the lifting clamping seat 516 on the mounting panel 502 is lowered by gravity, meanwhile, the clamping arms 520 positioned at two sides of the lifting clamping seat 516 are supported by the lifting clamping seat 516, so that the limiting rollers 521 form triangular distribution to clamp the cylinder body 4, and meanwhile, the center height of the cylinder body 4 is kept unchanged in the process of clamping the cylinder bodies 4 with different sizes;
3) Starting a telescopic cylinder 509 to enable the extrusion round sliding rod 506 to move in the hollow rotary tube 505, enabling the clamping block 507 to form extrusion force on the outer side of the sealing plug plate 503 in the clamping frame 504, enabling the sealing plug plate 503 to be closely attached to the opening of the cylinder barrel body 4, and driving the intermittent gear 512 through the speed change motor 513 by starting the speed change motor 513 to enable a tooth block end gap on the intermittent gear 512 to be meshed with the driving gear 510, so that the cylinder barrel body 4 positioned in the sealing water tank 2 intermittently rotates;
4) On the one hand, whether the water tank generates bubbles is observed through the observation window, on the other hand, the liquid level change in the transparent glass tube 8 is intuitively observed through observing the scale mark on one side of the transparent glass tube 8, and meanwhile, the air pressure value is detected through the air pressure sensor and fed back to the controller, and an air leakage alarm is sent out to judge whether the hydraulic cylinder leaks air.
5) After the detection, the valve 707 is opened, then the pump body 701 is started, the detection water in the sealed water tank 2 is extracted through the pump body 701, the used detection water is filtered through the plurality of filter plates 705 in the circulating filter tank 704, and then the detection water is discharged into the sealed water tank 2 through the discharge pipe 702.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The utility model provides a gas tightness detection device of pneumatic cylinder, includes detects brace table and water tank, its characterized in that, the inside of water tank is provided with spacing fixed subassembly, and spacing fixed subassembly includes extension cylinder, sealed cock plate, cavity installation circle frame, rotation axis, pivot and gear motor, round hole one has all been seted up to the both sides of water tank, and the inside of two round holes one all is connected with the cavity revolving tube through the bearing, and the inside of two cavity revolving tubes all sliding connection has the extrusion circle slide bar, and the equal fixedly connected with fixture block of one side of two extrusion circle slide bars, two the relative one side swing joint of sealed cock plate has same cylinder body, one side of two sealed cock plates is equal fixedly connected with card frame, two one side of cavity installation circle frame is equal fixedly connected with telescopic cylinder, and one side of telescopic cylinder is equal fixedly connected with drive gear of extrusion circle slide bar, two the equal fixedly connected with installation panel in one side of extension cylinder plate, and two one side of two equal fixedly connected with face plate's side of installation glass deflector and one side are located the transparent glass carrier, the bottom of transparent carrier is provided with transparent carrier, the bottom of transparent carrier is connected with transparent carrier, the glass carrier is provided with the bottom of the transparent carrier, the glass carrier is connected with the bottom of transparent carrier, the glass carrier is connected with one side of transparent carrier, the bottom.
2. The air tightness detection device of a cylinder barrel of a hydraulic cylinder according to claim 1, wherein an adjusting component is arranged in the water tank and comprises a guide rail, two movable seats are slidably connected in the guide rail, and one side of each movable seat is fixedly connected with one side of a support plate.
3. The air tightness detection device of the cylinder barrel of the hydraulic cylinder according to claim 2, wherein a third round hole is formed in one side of each of the two moving seats, a screw nut sleeve is fixedly connected to the inside of each of the two third round holes, a fourth round hole is formed in two sides of each of the water tank, the inside of each of the two fourth round holes is connected with the same two-way screw rod through a bearing, the two-way screw rod is connected to the inside of each of the two screw nut sleeves through threads, and an adjusting handle is fixedly connected to the outside of each of the two screw rods.
4. The air tightness detection device of a hydraulic cylinder barrel according to claim 3, wherein two clamping arms are fixedly connected to the outer portions of the rotating shafts, round holes II are formed in two sides of the two clamping arms and the lifting clamping seat, rotating shafts are connected to the inner portions of the two opposite round holes II through bearings, limiting idler wheels are fixedly connected to the outer portions of each rotating shaft, and contact abutting wheels are fixedly connected to the outer portions of the rotating shafts.
5. The air tightness detection device of a cylinder barrel of a hydraulic cylinder as recited in claim 4, wherein a circulating assembly is provided at one side of the detection support table, and the circulating assembly includes a circulating filter box.
6. The air tightness detection device for the cylinder barrel of the hydraulic cylinder according to claim 5, wherein the filter plates are fixedly connected to opposite sides of the circulating filter box at equal intervals, and one side of each filter plate is provided with adsorption holes at equal intervals.
7. The air tightness detection device of a cylinder barrel of a hydraulic cylinder according to claim 6, wherein a drain hole is formed in one side of the water tank, a suction pipe is fixedly connected to the inside of the drain hole, a valve is connected to the outside of the suction pipe through a flange, and the other end of the suction pipe is connected to the inside of the circulating filter box.
8. The air tightness detection device of a cylinder barrel of a hydraulic cylinder according to claim 7, wherein one side of the detection supporting table is fixedly connected with a pump body, a discharge end of the pump body is connected to the inside of the water tank through a discharge pipe, and a water inlet end of the pump body is connected to the inside of the circulation filter box through a circulation pipe.
9. The air tightness detection device of a cylinder barrel of a hydraulic cylinder according to claim 8, wherein a cover plate is connected to one side of the water tank through a hinge, an observation port is formed in one side of the water tank, a transparent observation window is fixedly connected to the inside of the observation port, scale marks are arranged on one side of the transparent glass tube, and a mounting seat is fixedly connected to one side of the detection support table.
10. A method for detecting the air tightness of a cylinder tube of a hydraulic cylinder according to any of claims 1 to 9, comprising the steps of:
placing elastic air bag balls in the cylinder barrel body, inserting sealing plug plates into two sides of the cylinder barrel body, and then filling nitrogen with certain pressure into the cylinder barrel body through inflation holes in the sealing plug plates;
the cylinder barrel body is placed on the mounting panel, triangular distribution is formed through the limiting rollers to clamp the cylinder barrel body, and meanwhile, the center height of the cylinder barrel body is kept unchanged in the clamping process of the cylinder barrel bodies with different sizes;
starting a telescopic cylinder to enable the extrusion round sliding rod to move in the hollow rotary tube, enabling the clamping block to form extrusion force on the outer side of the sealing plug plate in the clamping frame, enabling the sealing plug plate to be closely attached to the opening of the cylinder barrel body, driving the intermittent gear through the speed change motor by starting the speed change motor, enabling the tooth block ends on the intermittent gear to be meshed with the driving gear intermittently, and enabling the cylinder barrel body located in the sealing water tank to rotate intermittently;
on one hand, whether bubbles are generated in the water tank or not is observed through the observation window, on the other hand, the liquid level change in the transparent glass tube is intuitively observed through observing the scale mark on one side of the transparent glass tube, meanwhile, the air pressure value is detected through the air pressure sensor and fed back to the controller, an air leakage alarm is sent out, and whether the hydraulic cylinder leaks air is judged;
after the detection is finished, the valve is opened, then the pump body is started, the detection water in the sealed water tank is extracted through the pump body, the used detection water is filtered through the filter plates in the circulating filter tank, and then the detection water is discharged into the sealed water tank through the discharge pipe.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117699374A (en) * | 2024-02-06 | 2024-03-15 | 常州海图信息科技股份有限公司 | Remote safety monitoring device and method for belt conveyor |
| CN117804707A (en) * | 2024-03-01 | 2024-04-02 | 江苏力速达液压有限公司 | Hydraulic cylinder tightness testing device and testing method |
| CN117804707B (en) * | 2024-03-01 | 2024-06-07 | 江苏力速达液压有限公司 | Hydraulic cylinder tightness testing device and testing method |
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2023
- 2023-06-05 CN CN202310653127.2A patent/CN116878754A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117699374A (en) * | 2024-02-06 | 2024-03-15 | 常州海图信息科技股份有限公司 | Remote safety monitoring device and method for belt conveyor |
| CN117699374B (en) * | 2024-02-06 | 2024-04-16 | 常州海图信息科技股份有限公司 | Remote safety monitoring device and method for belt conveyor |
| CN117804707A (en) * | 2024-03-01 | 2024-04-02 | 江苏力速达液压有限公司 | Hydraulic cylinder tightness testing device and testing method |
| CN117804707B (en) * | 2024-03-01 | 2024-06-07 | 江苏力速达液压有限公司 | Hydraulic cylinder tightness testing device and testing method |
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