CN114754045A - Electro-hydraulic servo valve pollution abrasion test device - Google Patents
Electro-hydraulic servo valve pollution abrasion test device Download PDFInfo
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- CN114754045A CN114754045A CN202210394607.7A CN202210394607A CN114754045A CN 114754045 A CN114754045 A CN 114754045A CN 202210394607 A CN202210394607 A CN 202210394607A CN 114754045 A CN114754045 A CN 114754045A
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- hydraulic servo
- servo valve
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 238000005299 abrasion Methods 0.000 title abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 210000001503 joint Anatomy 0.000 claims description 29
- 238000011109 contamination Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 description 9
- 239000007787 solid Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000002730 additional effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000576 supplementary effect Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
- F16L41/10—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe the extremity of the pipe being screwed into the wall
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/088—Pipe-line systems for liquids or viscous products for solids or suspensions of solids in liquids, e.g. slurries
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses an electro-hydraulic servo valve pollution wear test device which comprises a base, an electro-hydraulic servo valve, an input end, a quick-change mechanism, butt-joint pipes, a sealing mechanism, pipelines, a three-way valve, a liquid inlet pipe and a powder inlet. The invention relates to a pollution and abrasion test device for an electro-hydraulic servo valve, which has the characteristics of good continuity, high accuracy and good sealing property.
Description
Technical Field
The invention belongs to the technical field of electro-hydraulic servo valves, and particularly relates to a pollution wear test device for an electro-hydraulic servo valve.
Background
At present, a test device designed for hydraulic valve pollution adopts a test method of adding standard AC test dust or MTD test dust to the outside. For example, JB/T7857-2006 (hydraulic valve pollution sensitivity assessment method) shows a test loop of the pollution sensitivity of the hydraulic valve, namely a test loop designed by a method of adding MTD test dust. However, the test method of applying AC test dust or MTD test dust to the outside has two problems: firstly, the continuity and the sealing performance of the test are difficult to guarantee at present; secondly, the sizes and the hardness of the pollutants encountered by the electro-hydraulic servo valve in the actual use process are complicated and changeable, only the pollution particles with single hardness are used for replacing the pollutants in the actual use process for testing, and the test result has certain deviation from the actual condition.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a contamination wear test apparatus for an electro-hydraulic servo valve, which solves the problems mentioned in the background art.
In order to solve the above problems, the present invention provides a technical solution:
the electro-hydraulic servo valve pollution wear test device comprises a base, an electro-hydraulic servo valve, an input end, a quick-change mechanism, butt-joint pipes, a sealing mechanism, pipelines, a three-way valve, a liquid inlet pipe and a powder inlet.
Preferably, the powder inlet is connected with a cap through threads, and the cap is made of plastic materials. Through the design of the cover cap, the powder inlet is blocked.
Preferably, quick change mechanism includes the guide way, the guide bar, the guide block, solid fixed ring, the carousel, the ball, annular and first spring, the guide way has been seted up on the base, fixedly connected with guide bar in the guide way, the outside sliding connection of guide bar has the guide block, guide block and guide way sliding connection, first spring has been cup jointed to the outside of guide bar, the one end fixedly connected with guide block of first spring, the other end fixed connection of first spring is in the internal surface of guide way, the solid fixed ring of top fixedly connected with of guide block, gu fixed ring's outside is rotated and is connected with the carousel, gu be provided with the ball on the fixed ring, ball and carousel contact, fixedly connected with is to the pipe in the carousel. Through promoting the carousel, the carousel drives solid fixed ring sideslip, and gu fixed ring drives the guide block and slides and compress first spring in the guide way, then rotates the carousel for one of them butt joint pipe is equal with the input of electro-hydraulic servo valve.
Preferably, the number of the balls is multiple, and the balls are uniformly distributed on the fixing ring. Through the design of ball, have the additional action to the rotation of carousel on solid fixed ring.
Preferably, the rotary disc is provided with a ring groove, and a fixing ring is rotationally connected in the ring groove. Through the design of the ring groove, the rotary table has a certain limiting effect.
Preferably, the sealing mechanism comprises a baffle ring, a sealing ring, an internal thread sleeve, a sliding rod, a second spring, a hinged seat, a pressing rod, a clamping pin, a clamping groove, an ejector rod and a third spring, an external thread block is fixedly connected to the outside of the input end, a baffle ring is fixedly connected to the outside of the butt joint pipe, the sealing ring is embedded in the baffle ring and is contacted with the external thread block, the internal thread sleeve is movably sleeved on the outside of the butt joint pipe and is connected with the external thread block through a thread, the sliding rod is slidably connected in the internal thread sleeve and is contacted with the baffle ring, the second spring is sleeved on the outside of the sliding rod, the baffle ring is contacted with one end of the second spring, the other end of the second spring is fixedly connected to the inner surface of the internal thread sleeve, the hinged seat is fixedly connected to the outside of the internal thread sleeve, the pressing rod is hinged on the hinged seat, the clamping pin is fixedly connected to the pressing rod, the clamping pin is slidably connected with the external thread block, the ejector rod is slidably connected in the internal thread sleeve, the ejector rod is contacted with the pressure rod, and a third spring is arranged in the internal thread sleeve. Through the one end of pressing the depression bar perk, the depression bar drives the ejector pin and slides in the internal thread cover this moment, and can compression spring in the gliding while of ejector pin, then with the direction pulling of internal thread cover towards the input, and with threaded connection between the outside external thread piece of input, the second spring receives the compression and then makes and keep off the ring and be close to the external thread piece this moment, and keep off the sealing washer on the ring and receive the compression, then loosen the depression bar, the third spring pushes back the ejector pin this moment, the ejector pin pushes back the depression bar, the bayonet lock card is gone into in the draw-in groove on the external thread piece on the depression bar, and then make the sealing washer hug closely the external thread piece, thereby the leakproofness of medium circulation in the experimentation has been guaranteed.
Preferably, one end of the third spring is fixedly connected with the ejector rod, and the other end of the third spring is fixedly connected to the inner surface of the internal thread sleeve. Through the design of third spring, have supplementary effect that resets to the ejector pin.
Preferably, the surface of the external thread block is provided with a plurality of clamping grooves, clamping pins are connected in the clamping grooves in a sliding manner, and the plurality of clamping grooves are distributed on the external thread block in an annular manner. Through the design of draw-in groove, with the bayonet lock cooperation, have locking effect not hard up to the internal thread cover.
The beneficial effects of the invention are: the invention relates to a pollution and abrasion test device of an electro-hydraulic servo valve, which has the characteristics of good continuity, high accuracy and good sealing performance, and has the following beneficial effects in specific use compared with the prior art:
firstly, a quick change mechanism is arranged on a base, two identical butt joint pipes are arranged on the quick change mechanism, powder inlets are arranged on the butt joint pipes, the two butt joint pipes can be quickly changed in position through the quick change mechanism, and then AC test dust with different sizes is added into the two butt joint pipes, so that the test continuity is ensured, and the test accuracy is improved;
Secondly, a sealing mechanism is arranged between the butt joint pipe and the input end of the electro-hydraulic servo valve, a baffle ring is fixed outside the butt joint pipe, a sealing ring is arranged on the baffle ring, and then a spring in the internal thread sleeve can act on the baffle ring through the matching between a clamping pin and a clamping groove, so that the sealing ring is tightly attached to the input end of the electro-hydraulic servo valve, and the sealing performance of medium circulation in the test process is guaranteed.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and the accompanying drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the portion A of FIG. 1 according to the present invention;
FIG. 3 is a side view of the turntable of FIG. 2 of the present invention;
FIG. 4 is a side cross-sectional view of the retaining ring of FIG. 2 of the present invention;
FIG. 5 is an enlarged cross-sectional view of the sealing mechanism of FIG. 1 in accordance with the present invention;
fig. 6 is a front view of fig. 1 of the present invention.
In the figure: 1. a base; 2. an electro-hydraulic servo valve; 3. an input end; 31. an external thread block; 4. a quick-change mechanism; 41. a guide groove; 42. a guide bar; 43. a guide block; 44. a fixing ring; 45. a turntable; 46. a ball bearing; 47. a ring groove; 48. a first spring; 5. butt-joint pipes; 6. a sealing mechanism; 61. a baffle ring; 62. a seal ring; 63. an internal thread sleeve; 64. a slide bar; 65. a second spring; 66. a hinged seat; 67. a pressure lever; 68. a bayonet lock; 69. a card slot; 610. a top rod; 611. a third spring; 7. a pipeline; 8. a three-way valve; 9. a liquid inlet pipe; 10. a powder inlet; 11. and (7) capping.
The specific implementation mode is as follows:
as shown in fig. 1 to 6, the following technical solutions are adopted in the present embodiment:
the embodiment is as follows:
the electro-hydraulic servo valve pollution wear test device comprises a base 1, an electro-hydraulic servo valve 2, an input end 3, a quick-change mechanism 4, butt joint pipes 5, a sealing mechanism 6, pipelines 7, a three-way valve 8, a liquid inlet pipe 9 and a powder inlet 10, wherein the electro-hydraulic servo valve 2 is fixedly installed on the base 1, the input end 3 is arranged on the electro-hydraulic servo valve 2, the quick-change mechanism 4 is arranged on the base 1, the butt joint pipes 5 are symmetrically distributed on the quick-change mechanism 4, the sealing mechanism 6 is arranged on each butt joint pipe 5, the pipelines 7 are uniformly and fixedly connected on each butt joint pipe 5, the three-way valve 8 is fixedly connected between the two pipelines 7, the liquid inlet pipe 9 is fixedly connected on the three-way valve 8, the liquid inlet pipe 9 is a hose, no obvious collapse occurs when the hose is twisted for 90 degrees, and the powder inlet 10 is fixedly connected on the butt joint pipes 5.
The powder inlet 10 is connected with a cap 11 through threads, and the cap 11 is made of plastic. The design of the cap 11 has a blocking effect on the powder inlet 10.
Wherein, quick change mechanism 4 includes guide way 41, guide bar 42, guide block 43, solid fixed ring 44, the carousel 45, ball 46, annular 47 and first spring 48, guide way 41 has been seted up on base 1, fixedly connected with guide bar 42 in the guide way 41, the outside sliding connection of guide bar 42 has guide block 43, guide block 43 and guide way 41 sliding connection, first spring 48 has been cup jointed to guide bar 42's outside, the one end fixedly connected with guide block 43 of first spring 48, the other end fixedly connected with in the internal surface of guide way 41 of first spring 48, the solid fixed ring 44 of top fixedly connected with of guide block 43, the outside of solid fixed ring 44 is rotated and is connected with carousel 45, be provided with ball 46 on the solid fixed ring 44, ball 46 and the contact of carousel 45, fixedly connected with butt joint pipe 5 in the carousel 45. By pushing the rotary disk 45, the rotary disk 45 drives the fixed ring 44 to move transversely, the fixed ring 44 drives the guide block 43 to slide in the guide groove 41 and compress the first spring 48, and then the rotary disk 45 is rotated, so that one of the butt joint pipes 5 is flush with the input end 3 of the electro-hydraulic servo valve 2.
The number of the balls 46 is plural, and the plural balls 46 are uniformly distributed on the fixing ring 44. The balls 46 are designed to assist the rotation of the rotor 45 on the stationary ring 44.
Wherein, the rotating disc 45 is provided with a ring groove 47, and the ring groove 47 is rotatably connected with a fixing ring 44. Through the design of annular groove 47, have certain limiting effect to carousel 45.
Wherein, the sealing mechanism 6 comprises a baffle ring 61, a sealing ring 62, an internal thread sleeve 63, a sliding rod 64, a second spring 65, a hinge seat 66, a pressure rod 67, a clamping pin 68, a clamping groove 69, a push rod 610 and a third spring 611, the external part of the input end 3 is fixedly connected with an external thread block 31, the external part of the butt joint pipe 5 is fixedly connected with the baffle ring 61, the sealing ring 62 is embedded in the baffle ring 61, the sealing ring 62 is contacted with the external thread block 31, the external part of the butt joint pipe 5 is movably sleeved with the internal thread sleeve 63, the internal thread sleeve 63 is connected with the external thread block 31 through threads, the sliding rod 64 is connected in the internal thread sleeve 63 in a sliding way, the sliding rod 64 is contacted with the baffle ring 61, the second spring 65 is sleeved outside the sliding rod 64, one end of the second spring 65 is contacted with the baffle ring 61, the other end of the second spring 65 is fixedly connected with the inner surface of the internal thread sleeve 63, the external part of the internal thread sleeve 63 is fixedly connected with the hinge seat 66, the hinge seat 66 is hinged with the pressure rod 67, a bayonet 68 is fixedly connected to the pressure lever 67, the bayonet 68 is slidably connected with the external thread block 31, a push rod 610 is slidably connected in the internal thread sleeve 63, the push rod 610 is in contact with the pressure lever 67, and a third spring 611 is arranged in the internal thread sleeve 63. Through the tilting one end of pressure lever 67 of pressure, the pressure lever 67 drives ejector pin 610 and slides in interior thread bush 63 this moment, and ejector pin 610 can compress third spring 611 when sliding, then with interior thread bush 63 towards the direction pulling of input 3, and with threaded connection between the outside external thread piece 31 of input 3, second spring 65 receives the compression this moment and then makes fender ring 61 be close to external thread piece 31, and the sealing washer 62 on the fender ring 61 receives the compression, then loosen pressure lever 67, third spring 611 backs up ejector pin 610 this moment, ejector pin 610 backs up pressure lever 67, bayonet lock 68 card is gone up to the depression bar 67 in the draw-in groove 69 on the external thread piece 31, and then make sealing washer 62 hug closely external thread piece 31, thereby the leakproofness of medium circulation in the experimentation has been guaranteed.
One end of the third spring 611 is fixedly connected with the push rod 610, and the other end of the third spring 611 is fixedly connected to the inner surface of the internal thread sleeve 63. The design of the third spring 611 has an auxiliary return effect on the ejector rod 610.
The clamping grooves 69 are formed in the surface of the external thread block 31, the clamping pins 68 are connected in the clamping grooves 69 in a sliding mode, the clamping grooves 69 are multiple in number, and the clamping grooves 69 are distributed on the external thread block 31 in an annular mode. Through the design of the clamping groove 69, the clamping pin 68 is matched with the clamping sleeve, and the inner threaded sleeve 63 has a loosening prevention function.
The use state of the invention is as follows: when the device is used, the rotating disc 45 is manually pushed horizontally, the rotating disc 45 drives the fixing ring 44 to move transversely, the fixing ring 44 drives the guide block 43 to slide in the guide groove 41 and compress the first spring 48, then the rotating disc 45 is rotated to enable one of the butt joint pipes 5 to be level with the input end 3 of the electro-hydraulic servo valve 2, then one end of the pressure rod 67 which is tilted is pressed, at the moment, the pressure rod 67 drives the ejector rod 610 to slide in the inner thread sleeve 63, the third spring 611 is compressed while the ejector rod 610 slides, then the inner thread sleeve 63 is pulled towards the direction of the input end 3 and is in threaded connection with the outer thread block 31 outside the input end 3, at the moment, the second spring 65 is compressed to enable the baffle ring 61 to be close to the outer thread block 31, the sealing ring 62 on the baffle ring 61 is compressed, then the pressure rod 67 is released, at the moment, the third spring 611 jacks the ejector rod 610, the pressure rod 67 is jacked back by the ejector rod 610, the bayonet 68 on the pressure rod 67 is clamped in the bayonet groove 69 on the outer thread block 31, further, the sealing ring 62 is tightly attached to the external thread block 31, so that the sealing performance of medium circulation in the test process is ensured;
Then, AC test dust is added into a powder inlet 10 of the current butt joint pipe 5, then a cover cap 11 is covered, then a three-way valve 8 is opened, so that a liquid inlet pipe 9 flows into the current butt joint pipe 5, further, the AC test dust is flushed into an electro-hydraulic servo valve 2 by a circulating medium, a pollution and wear test is carried out, after the test is carried out for a period of time, the current butt joint pipe 5 is separated from an input end 3, the three-way valve 8 is closed, then a rotary disc 45 is rotated, so that the positions of the two butt joint pipes 5 are interchanged, then a sealing mechanism 6 of the other butt joint pipe 5 is connected with the input end 3, then the powder inlet 10 of the other butt joint pipe 5 is added with the AC test dust with different particle sizes, the test accuracy is improved, and meanwhile, the test continuity is guaranteed.
Claims (8)
1. Electro-hydraulic servo valve pollution wear test device, including base (1), electro-hydraulic servo valve (2), input (3), quick change mechanism (4), butt joint pipe (5), sealing mechanism (6), pipeline (7), three-way valve (8), feed liquor pipe (9) and powder entry (10), its characterized in that: the automatic powder feeding device is characterized in that an electro-hydraulic servo valve (2) is fixedly mounted on a base (1), an input end (3) is arranged on the electro-hydraulic servo valve (2), a quick-change mechanism (4) is arranged on the base (1), two butt-joint pipes (5) which are symmetrically distributed are arranged on the quick-change mechanism (4), a sealing mechanism (6) is arranged on each butt-joint pipe (5), a pipeline (7) is uniformly and fixedly connected onto each butt-joint pipe (5), a three-way valve (8) is fixedly connected between the two pipelines (7), a liquid inlet pipe (9) is fixedly connected onto the three-way valve (8), and a powder inlet (10) is fixedly connected onto each butt-joint pipe (5).
2. The electro-hydraulic servo valve contamination wear test apparatus according to claim 1, characterized in that: the powder inlet (10) is connected with a cover cap (11) through threads, and the cover cap (11) is made of plastic materials.
3. The electro-hydraulic servo valve contamination wear test apparatus according to claim 1, characterized in that: the quick change mechanism (4) comprises a guide groove (41), a guide rod (42), a guide block (43), a fixing ring (44), a turntable (45), balls (46), a ring groove (47) and a first spring (48), the guide groove (41) is formed in the base (1), the guide rod (42) is fixedly connected in the guide groove (41), the guide block (43) is connected to the outer portion of the guide rod (42) in a sliding mode, the guide block (43) is connected with the guide groove (41) in a sliding mode, the first spring (48) is sleeved on the outer portion of the guide rod (42), the guide block (43) is fixedly connected to one end of the first spring (48), the other end of the first spring (48) is fixedly connected to the inner surface of the guide groove (41), the fixing ring (44) is fixedly connected to the top of the guide block (43), the turntable (45) is rotatably connected to the outer portion of the fixing ring (44), the balls (46) are arranged on the fixing ring (44), the ball (46) is contacted with the turntable (45), and the butt joint pipe (5) is fixedly connected in the turntable (45).
4. The electro-hydraulic servo valve contamination wear test apparatus according to claim 3, characterized in that: the number of the balls (46) is multiple, and the balls (46) are uniformly distributed on the fixing ring (44).
5. The electro-hydraulic servo valve contamination wear test apparatus of claim 3, characterized in that: the rotary table (45) is provided with a ring groove (47), and the ring groove (47) is rotatably connected with a fixing ring (44).
6. The electro-hydraulic servo valve contamination wear test apparatus according to claim 1, characterized in that: the sealing mechanism (6) comprises a baffle ring (61), a sealing ring (62), an internal thread sleeve (63), a sliding rod (64), a second spring (65), a hinged seat (66), a pressing rod (67), a clamping pin (68), a clamping groove (69), a push rod (610) and a third spring (611), an external thread block (31) is fixedly connected to the outside of the input end (3), the baffle ring (61) is fixedly connected to the outside of the butt joint pipe (5), the sealing ring (62) is embedded in the baffle ring (61), the sealing ring (62) is in contact with the external thread block (31), the internal thread sleeve (63) is movably sleeved on the outside of the butt joint pipe (5), the internal thread sleeve (63) is in threaded connection with the external thread block (31), the sliding rod (64) is slidably connected in the internal thread sleeve (63), the sliding rod (64) is in contact with the baffle ring (61), the second spring (65) is sleeved on the outside of the sliding rod (64), and the baffle ring (61) is in contact with one end of the second spring (65), the other end fixed connection of second spring (65) is in the internal surface of internal thread cover (63), the articulated seat of outside fixedly connected with (66) of internal thread cover (63), it has depression bar (67) to articulate on articulated seat (66), fixedly connected with bayonet lock (68) on depression bar (67), bayonet lock (68) and external screw thread piece (31) sliding connection, sliding connection has ejector pin (610) in internal thread cover (63), ejector pin (610) and depression bar (67) contact, be provided with third spring (611) in internal thread cover (63).
7. The electro-hydraulic servo valve contamination wear test apparatus of claim 6, wherein: one end of the third spring (611) is fixedly connected with a push rod (610), and the other end of the third spring (611) is fixedly connected to the inner surface of the internal thread sleeve (63).
8. The electro-hydraulic servo valve contamination wear test apparatus of claim 6, wherein: the surface of the external thread block (31) is provided with clamping grooves (69), clamping pins (68) are connected in the clamping grooves (69) in a sliding mode, the quantity of the clamping grooves (69) is multiple, and the clamping grooves (69) are distributed on the external thread block (31) in an annular mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210394607.7A CN114754045A (en) | 2022-04-15 | 2022-04-15 | Electro-hydraulic servo valve pollution abrasion test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210394607.7A CN114754045A (en) | 2022-04-15 | 2022-04-15 | Electro-hydraulic servo valve pollution abrasion test device |
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| CN114754045A true CN114754045A (en) | 2022-07-15 |
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| CN202210394607.7A Pending CN114754045A (en) | 2022-04-15 | 2022-04-15 | Electro-hydraulic servo valve pollution abrasion test device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114719049A (en) * | 2022-04-14 | 2022-07-08 | 泉州市唯达卫浴科技有限公司 | Anti-scalding constant-temperature intelligent faucet and processing technology thereof |
| CN115949654A (en) * | 2023-03-09 | 2023-04-11 | 烟台中宇航空液压有限公司 | Hydraulic part platform position quick change device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4099405A (en) * | 1975-12-12 | 1978-07-11 | Service Equipment Design Co., Inc. | Apparatus and method for testing pipes for leaks, and seals therefor |
| CN110307215A (en) * | 2019-08-12 | 2019-10-08 | 烟台中宇航空液压有限公司 | Electrohydraulic servo valve contamination wear experimental rig |
| CN112013174A (en) * | 2020-08-25 | 2020-12-01 | 珠海市广华燃气消防工程有限公司 | Natural gas pipeline plugging device |
| CN214036349U (en) * | 2020-12-30 | 2021-08-24 | 扬州钰恒机械有限公司 | Double-head ejector rod hydraulic cylinder |
| WO2021198572A1 (en) * | 2020-03-30 | 2021-10-07 | Vianney Rabhi | Hydraulic piston with a depressurised recess |
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2022
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| US4099405A (en) * | 1975-12-12 | 1978-07-11 | Service Equipment Design Co., Inc. | Apparatus and method for testing pipes for leaks, and seals therefor |
| CN110307215A (en) * | 2019-08-12 | 2019-10-08 | 烟台中宇航空液压有限公司 | Electrohydraulic servo valve contamination wear experimental rig |
| WO2021198572A1 (en) * | 2020-03-30 | 2021-10-07 | Vianney Rabhi | Hydraulic piston with a depressurised recess |
| CN112013174A (en) * | 2020-08-25 | 2020-12-01 | 珠海市广华燃气消防工程有限公司 | Natural gas pipeline plugging device |
| CN214036349U (en) * | 2020-12-30 | 2021-08-24 | 扬州钰恒机械有限公司 | Double-head ejector rod hydraulic cylinder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114719049A (en) * | 2022-04-14 | 2022-07-08 | 泉州市唯达卫浴科技有限公司 | Anti-scalding constant-temperature intelligent faucet and processing technology thereof |
| CN115949654A (en) * | 2023-03-09 | 2023-04-11 | 烟台中宇航空液压有限公司 | Hydraulic part platform position quick change device |
| CN115949654B (en) * | 2023-03-09 | 2023-06-02 | 烟台中宇航空液压有限公司 | Hydraulic part bench quick-change device |
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