CN113803446A - Hydraulic or pneumatic detection oil cylinder structure - Google Patents
Hydraulic or pneumatic detection oil cylinder structure Download PDFInfo
- Publication number
- CN113803446A CN113803446A CN202111111730.5A CN202111111730A CN113803446A CN 113803446 A CN113803446 A CN 113803446A CN 202111111730 A CN202111111730 A CN 202111111730A CN 113803446 A CN113803446 A CN 113803446A
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- piston
- guide rod
- cylinder body
- hydraulic
- cylinder structure
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- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 59
- 238000003801 milling Methods 0.000 claims abstract description 37
- 230000003068 static effect Effects 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 210000004907 gland Anatomy 0.000 claims description 32
- 239000012530 fluid Substances 0.000 claims 2
- 238000009434 installation Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000000034 method Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
Images
Classifications
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0447—Control of lubricant levels, e.g. lubricant level control dependent on temperature
- F16H57/0449—Sensors or indicators for controlling the fluid level
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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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
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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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
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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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1447—Pistons; Piston to piston rod assemblies
- F15B15/1452—Piston sealings
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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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
- F15B15/1461—Piston rod sealings
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1471—Guiding means other than in the end cap
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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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
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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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Actuator (AREA)
Abstract
The invention discloses a hydraulic or pneumatic detection oil cylinder structure which is provided with a cylinder body, a piston, a guide sleeve, a magnetic ring and a sensor, wherein one end of the cylinder body is provided with a first oil port for connecting a double-wheel milling gearbox, the other end of the cylinder body is provided with a second oil port for externally connecting an air source or an oil source, the hydraulic or pneumatic detection oil cylinder structure also comprises a guide rod arranged in the cylinder body, one end of the guide rod is fixed on the bottom of the cylinder body, and the other end of the guide rod is fixed on the guide sleeve; the magnetic ring is fixed on the piston and moves back and forth in the cylinder body along the guide rod along with the piston; the sensor is installed on the guide sleeve and used for detecting the position of the piston, the dynamic change condition of the piston and the liquid level change condition of the double-wheel milling gearbox. The oil cylinder structure omits an outward extending piston rod, utilizes a guide rod to replace the outward extending piston rod, and arranges the guide rod in the cylinder body, thereby reducing the installation and use space of the oil cylinder; the original dynamic sealing state of the piston rod is converted into the existing static sealing state of the guide rod, the sealing performance of the oil cylinder to the external environment is improved, the service life is prolonged, and the cost is saved.
Description
Technical Field
The invention relates to the technical field of detection oil cylinders, in particular to a hydraulic or pneumatic detection oil cylinder structure.
Background
A double-wheel milling gear box can be arranged on double-wheel milling equipment for construction of an underground engineering diaphragm wall, the double-wheel milling gear box is required to be deep into an underground 100m muddy water environment along with a cutting wheel in the working process, the surrounding muddy water pressure reaches more than 1MPa, a certain amount of gear lubricating oil is stored in the double-wheel milling gear box, and the environment with the pressure at the periphery has higher requirements on the sealing of the double-wheel milling gear box: the pressure in the double-wheel milling gear box is always greater than the pressure of muddy water around the double-wheel milling gear box, so that the muddy water can be prevented from entering the double-wheel milling gear box; secondly, the pressure of the muddy water around the double-wheel milling gear box is gradually increased along with the sinking of the construction process, so that the pressure in the double-wheel milling gear box is required to be gradually increased along with the sinking of the double-wheel milling gear box, the pressure in the double-wheel milling gear box can be ensured to be always greater than the pressure of the muddy water around the double-wheel milling gear box, and the sealing effect is achieved.
Referring to fig. 1, the conventional detection oil cylinder is a common oil cylinder with a sensor, and the oil cylinder is composed of a guide sleeve a, a cylinder body b, a piston rod c, a piston d, a sensor e, a magnetic ring f and a gland g. When the double-wheel milling gearbox works, the first oil port h is connected with the double-wheel milling gearbox, the second oil port i is externally connected with an air source or an oil source, compressed air or pressure oil with certain pressure is provided through the second oil port i to push the piston d to move leftwards, the volume of the double-wheel milling gearbox is reduced along with the leftward movement of the piston d, the pressure is increased, after the pressure is increased to certain specific pressure, the left and right thrust of the piston d are equal, and the piston d is in a balanced state. However, the oil cylinder structure has the following disadvantages in the working process: (1) the piston rod c is exposed, and the piston rod c occupies a large space in the expansion process; the piston rod c is easy to corrode after being soaked in muddy water for a long time, and the service life of the piston rod c is shortened; the sealing ring of the piston rod c is used in a muddy water environment for a long time, so that the service life of the sealing ring is shortened, and the sealing performance of the oil cylinder is influenced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the invention provides a hydraulic or pneumatic detection oil cylinder structure which has the advantages that the double-wheel milling gear box can be continuously and stably operated under the detectable condition.
The hydraulic or pneumatic detection oil cylinder structure provided by the embodiment of the invention is provided with a cylinder body, a piston, a guide sleeve, a magnetic ring and a sensor, wherein one end of the cylinder body is provided with a first oil port for connecting a double-wheel milling gearbox, the other end of the cylinder body is provided with a second oil port for externally connecting an air source or an oil source, the oil cylinder structure is also provided with a guide rod arranged in the cylinder body, one end of the guide rod is fixed on the bottom of the cylinder body, and the other end of the guide rod is fixed on the guide sleeve; the magnetic ring is fixed on the piston and moves back and forth in the cylinder body along the guide rod along with the piston; the sensor is installed on the guide sleeve and is used for detecting the position of the piston, the dynamic change condition of the piston and the liquid level change condition of the double-wheel milling gearbox.
The invention has the beneficial effects that the invention cancels the outward extending piston rod, utilizes the guide rod to replace the outward extending piston rod, and arranges the guide rod in the cylinder body, thus reducing the installation and use space of the oil cylinder; convert original piston rod dynamic seal state into current guide arm static seal state, improve the sealing performance of hydro-cylinder to external environment, increase life, save the cost, make the double round mill gearbox can last stable simultaneously to normally work under the detectable condition.
Further concrete injects, in the above-mentioned technical scheme, the guide arm is hollow structure, and this hydro-cylinder structure still has the gland, around forming the holding chamber between gland, uide bushing and the guide arm three, place in this holding chamber in the sensor.
Further specifically, in the above technical solution, the gland and the guide sleeve are fixed by a gland fixing screw, and the sensor is fixed in the inner hole of the guide sleeve by a gland positioning table of the gland.
In the technical scheme, the magnetic ring is clamped and embedded in the middle hole of the piston, the outer ring of the magnetic ring is tightly matched with the middle hole of the piston, and the inner ring of the magnetic ring is in sliding fit with the outer wall of the guide rod.
In the technical scheme, the guide rod is fixed on the cylinder bottom through the guide rod fixing screw, and the screw hole is sealed by the sealing plug, so that external water slurry is prevented from permeating.
In a further specific limitation, in the above technical solution, the end portion of the cylinder bottom is provided with a mounting threaded hole for fixing the whole cylinder structure on an external mounting base body by means of a threaded fastener.
In a further specific limitation, in the above technical solution, the piston and the cylinder are assembled to form a dynamic seal.
In the technical scheme, the guide sleeve and the guide rod are assembled to form a dynamic seal.
In a further specific limitation, in the above technical scheme, a static seal is formed by assembling the guide sleeve and the cylinder body.
In a further specific limitation, in the above technical solution, the sensor and the guide sleeve are assembled to form a static seal therebetween.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a conventional detection cylinder structure.
The reference numbers in figure 1 are: a. a guide sleeve; b. a cylinder body; c. a piston rod; d. a piston; e. a sensor; f. a magnetic ring; g. a gland; h. a first oil port; i. a second oil port.
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a partial enlarged view I of FIG. 2;
FIG. 4 is a second enlarged view of the portion of FIG. 2;
fig. 5 is a partially enlarged view three of fig. 2.
The reference numbers in the attached figures 2-5 are: 1. a cylinder body; 2. a piston; 3. a guide sleeve; 4. a magnetic ring; 5. a sensor; 6. a first oil port; 7. a second oil port; 8. a guide bar; 9. a gland; 10. an accommodating cavity; 11. a gland fixing screw; 12. a sensor cable sealing joint; 14. a guide rod fixing screw; 15. sealing and plugging; 16. installing a threaded hole; 17. a first sealing ring; 18. a second sealing ring; 19. a third sealing ring; 20. a fourth sealing ring; 21. screw holes; 22. a sealing ring V; 91. gland location platform.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 2, 3, 4 and 5, the hydraulic or pneumatic detection cylinder structure of the present invention includes a cylinder body 1, a piston 2, a guide sleeve 3, a magnetic ring 4 and a sensor 5, where the cylinder body 1 is composed of a cylinder body main body and a cylinder bottom, and the cylinder bottom may be fixed to the bottom of the cylinder body main body by welding, and of course, the cylinder bottom and the cylinder body main body may also be an integrally formed structure.
One end of the cylinder body 1 is provided with a first oil port 6 for connecting a double-wheel milling gearbox, the first oil port 6 can be fixed on the cylinder body 1 in a welding mode, and the first oil port 6 is communicated with an inner cavity of the cylinder body 1. The other end of the cylinder body 1 is provided with a second oil port 7 for being externally connected with an air source or an oil source, the second oil port 7 can be fixed on the cylinder body 1 in a welding mode, and the second oil port 7 is communicated with the inner cavity of the cylinder body 1.
The oil cylinder structure is also provided with a guide rod 8 which is arranged in the cylinder body 1, one end of the guide rod 8 is fixed on the bottom of the cylinder body 1, and the other end of the guide rod 8 is fixed on the guide sleeve 3; the magnetic ring 4 is fixed on the piston 2, and the magnetic ring 4 moves back and forth in the cylinder body 1 along the guide rod 8 along with the piston 2; the sensor 5 is installed on the uide bushing 3, and the sensor 5 is used for detecting piston 2 position, piston 2 dynamic change condition and the liquid level change condition of double round gear milling box.
Wherein, the guide sleeve 3 is provided with an inner hole for installing the guide rod 8 and a sealed inner groove for sealing the guide rod 8. The guide rod 8 is a hollow structure, one end of the guide rod 8 is opened, the oil cylinder structure is further provided with a gland 9, a containing cavity 10 is formed among the gland 9, the guide sleeve 3 and the guide rod 8, the sensor 5 is arranged in the containing cavity 10, the containing cavity 10 is T-shaped, and the sensor 5 is also T-shaped with the same structure as the containing cavity 10 in shape. The sensor 5 is composed of a measuring rod and an electronic bin, the measuring rod and the electronic bin are of an integrally formed structure, the measuring rod is located in a cavity of the guide rod 8, and the electronic bin is located between the gland 9 and the guide sleeve 3.
The gland 9 is fixed with the guide sleeve 3 through the gland fixing screw 11, the screw part of the gland fixing screw 11 sequentially and spirally enters the gland 9 and the guide sleeve 3, and the sensor 5 is limited in the accommodating cavity 10 through the fixed connection of the gland 9 and the guide sleeve 3. The sensor 5 is fixed in the inner hole of the guide sleeve 3 through a gland positioning table 91 of the gland 9, a through hole which is convenient for the sensor cable to penetrate through is arranged at the axis position of the gland 9, and a sensor cable sealing joint 12 is arranged at the through hole.
The magnetic ring 4 is embedded at the center hole of the piston 2 in a clamping way, the outer ring of the magnetic ring 4 is tightly matched with the center hole of the piston 2, and the inner ring of the magnetic ring 4 is in sliding fit with the outer wall of the guide rod 8. The axes of the guide rod 8, the piston 2 and the magnetic ring 4 are positioned on the same straight line.
The end of the guide rod 8 close to the cylinder bottom is provided with a sealing plug for sealing the opening at the end of the guide rod 8, and the sealing plug can be fixed on the guide rod 8 by welding.
The guide rod 8 is fixed on the cylinder bottom through a guide rod fixing screw 14, and the screw hole is sealed by a sealing plug 15 to prevent external water slurry from permeating. Specifically, the outer end of the cylinder bottom is provided with a screw hole 21, firstly, a screw rod part of the guide rod fixing screw 14 extends into the screw hole 21 and is screwed into the guide rod 8, an internal thread matched with the external thread of the sealing plug 15 is arranged on the hole wall of the screw hole 21, and the sealing plug 15 extends into the screw hole 21 and is screwed in the screw hole 21 of the cylinder bottom in a threaded manner. The inner end of the cylinder bottom has a mounting space for receiving one end of the guide rod 8.
The end of the cylinder bottom is provided with a mounting threaded hole 16 for facilitating the fixing of the entire cylinder structure to an external mounting base by means of a threaded fastener.
The piston 2 and the cylinder body 1 are assembled to form dynamic seal, specifically, the outer ring of the piston 2 is provided with sealing ring grooves, the number of the sealing ring grooves can be one or more, a sealing ring I17 is clamped in the sealing ring grooves, the outer ring of the sealing ring I17 is in sealing fit with the inner wall of the cylinder body 1, and the dynamic seal between the piston 2 and the cylinder body 1 is realized.
The guide sleeve 3 and the guide rod 8 are assembled to form dynamic seal, specifically, a sealing ring groove is arranged at a middle hole of the guide sleeve 3, the number of the sealing ring grooves can be one or more, a sealing ring II 18 is clamped in the sealing ring groove, and the inner ring of the sealing ring II 18 is in sealing fit with the outer wall of the guide rod 8, namely, the dynamic seal between the guide sleeve 3 and the guide rod 8 is realized.
The guide sleeve 3 and the cylinder body 1 are assembled to form static seal, specifically, a sealing ring groove is arranged on the outer ring of the guide sleeve 3, the number of the sealing ring grooves can be one or more, a sealing ring III 19 is clamped in the sealing ring groove, the outer ring of the sealing ring III 19 is in sealing fit with the inner wall of the cylinder body 1, and the static seal between the guide sleeve 3 and the cylinder body 1 is realized.
The sensor 5 and the guide sleeve 3 are assembled to form static seal, specifically, the outer wall of the sensor 5 is provided with sealing ring grooves, the number of the sealing ring grooves can be one or more, a sealing ring four 20 is clamped in the sealing ring groove, the outer ring of the sealing ring four 20 is in sealing fit with the middle hole of the guide sleeve 3, and the static seal between the sensor 5 and the guide sleeve 3 is realized.
The static seal is formed by assembling the gland 9 and the guide sleeve 3, specifically, a sealing ring groove is arranged on the outer ring of the gland 9, the number of the sealing ring grooves can be one or more, a sealing ring five 22 is clamped in the sealing ring groove, the outer ring of the sealing ring five 22 is in sealing fit with the middle hole of the guide sleeve 3, and the static seal between the gland 9 and the guide sleeve 3 is realized.
The oil cylinder structure has the following action principle: one end of a guide rod 8 is fixed on the cylinder body 1, the other end of the guide rod is fixed on the guide sleeve 3, the piston 2 can move left and right in the cylinder body 1 along the guide rod 8, the sensor 5 is installed on the guide sleeve 3 through a gland 9 and a screw 11, and the magnetic ring 4 is fixed on the piston 2 and can move along with the piston 2. When the double-wheel milling gearbox works, the first oil port 6 is connected with the double-wheel milling gearbox, and the second oil port 7 is externally connected with an air source or an oil source. The piston 2 is pushed to move leftwards by providing compressed air or pressure oil with specific pressure (the pressure value is determined according to the muddy water pressure of the depth where the double-wheel milling gearbox is located) for the second oil port 7, the volume of the left side of the oil cylinder is reduced along with the leftward movement of the piston 2, the pressure is increased, when the pressure is increased to be the same as the pressure of the left side of the piston 2, the left thrust and the right thrust of the piston 2 are also equal, the piston 2 is in dynamic balance, the output signal of the sensor 5 is stabilized at a certain specific value, and at the moment, the first oil port 6 of the oil cylinder is connected with the double-wheel milling gearbox to provide specific pressure for the oil of the double-wheel milling gearbox. When the magnetic ring 4 moves along with the piston 2, the sensor 5 can accurately detect the position and the dynamic change condition of the piston 2. In the construction process, when the sealing failure of the double-wheel milling gearbox is caused, the external water slurry pressure is greater than the pressure in the double-wheel milling gearbox, the external pressure water slurry enters the double-wheel milling gearbox, oil in the double-wheel milling gearbox enters the left cavity of the oil cylinder through the first oil port 6, the piston 2 is pushed to move rightwards, and at the moment, the output signal of the sensor 5 changes, so that the liquid level change condition of the double-wheel milling gearbox can be accurately detected; in a similar way, when the gear oil in the double-wheel milling gear box leaks due to sealing failure, the oil of the double-wheel milling gear box is reduced, the pressure of the right cavity of the oil cylinder is higher than the pressure of the left cavity, the piston 2 is pushed to move leftwards, the output signal of the sensor 5 changes, and the liquid level change condition of the double-wheel milling gear box can be accurately detected.
The invention cancels an outward extending piston rod, utilizes the guide rod 8 to replace the outward extending piston rod, and arranges the guide rod 8 in the cylinder body 1, thereby reducing the installation and use space of the oil cylinder; convert original piston rod dynamic seal state into current 8 static seal states of guide arm, improve the sealing performance of hydro-cylinder to external environment, increase life, save the cost, make the double round mill gear case can last stably simultaneously to normally work under the detectable condition.
The above embodiments are only preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equally replaced or changed within the scope of the present invention.
Claims (10)
1. The utility model provides a hydraulic pressure or atmospheric pressure detect hydro-cylinder structure, has cylinder body (1), piston (2), uide bushing (3), magnetic ring (4) and sensor (5), is provided with first hydraulic fluid port (6) that are used for connecting the double round and mill the gear box in the one end of cylinder body (1), is provided with second hydraulic fluid port (7) that are used for external air supply or oil source, its characterized in that at the other end of cylinder body (1):
the oil cylinder structure is also provided with a guide rod (8) which is arranged in the cylinder body (1), one end of the guide rod (8) is fixed on the bottom of the cylinder body (1), and the other end of the guide rod (8) is fixed on the guide sleeve (3);
the magnetic ring (4) is fixed on the piston (2), and the magnetic ring (4) moves back and forth in the cylinder body (1) along the guide rod (8) along with the piston (2);
the sensor (5) is installed on the guide sleeve (3), and the sensor (5) is used for detecting the position of the piston (2), the dynamic change condition of the piston (2) and the liquid level change condition of the double-wheel milling gearbox.
2. The hydraulic or pneumatic detection cylinder structure according to claim 1, characterized in that: the guide rod (8) is of a hollow structure, the oil cylinder structure is further provided with a gland (9), a containing cavity (10) is formed among the gland (9), the guide sleeve (3) and the guide rod (8) in a surrounding mode, and the sensor (5) is arranged in the containing cavity (10).
3. The hydraulic or pneumatic detection cylinder structure according to claim 2, characterized in that: the gland (9) is fixed with the guide sleeve (3) through a gland fixing screw (11), and the sensor (5) is fixed in an inner hole of the guide sleeve (3) through a gland positioning table (91) of the gland (9).
4. The hydraulic or pneumatic detection cylinder structure according to claim 1, characterized in that: the magnetic ring (4) is embedded at the middle hole of the piston (2), the outer ring of the magnetic ring (4) is tightly matched with the middle hole of the piston (2), and the inner ring of the magnetic ring (4) is in sliding fit with the outer wall of the guide rod (8).
5. The hydraulic or pneumatic detection cylinder structure according to claim 1, characterized in that: the guide rod (8) is fixed on the cylinder bottom through a guide rod fixing screw (14), and the screw hole is sealed by a sealing plug (15).
6. The hydraulic or pneumatic detection cylinder structure according to claim 1, characterized in that: the end of the cylinder bottom is provided with a mounting threaded hole (16) for facilitating the fixing of the entire cylinder structure to an external mounting base by means of a threaded fastener.
7. The hydraulic or pneumatic detection cylinder structure according to claim 1, characterized in that: and a dynamic seal is formed by assembling the piston (2) and the cylinder body (1).
8. The hydraulic or pneumatic detection cylinder structure according to claim 1, characterized in that: the guide sleeve (3) and the guide rod (8) are assembled to form dynamic seal.
9. The hydraulic or pneumatic detection cylinder structure according to claim 1, characterized in that: and a static seal is formed by assembling the guide sleeve (3) and the cylinder body (1).
10. The hydraulic or pneumatic detection cylinder structure according to claim 1, characterized in that: and a static seal is formed by assembling the sensor (5) and the guide sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111111730.5A CN113803446A (en) | 2021-09-23 | 2021-09-23 | Hydraulic or pneumatic detection oil cylinder structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111111730.5A CN113803446A (en) | 2021-09-23 | 2021-09-23 | Hydraulic or pneumatic detection oil cylinder structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113803446A true CN113803446A (en) | 2021-12-17 |
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ID=78896306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111111730.5A Pending CN113803446A (en) | 2021-09-23 | 2021-09-23 | Hydraulic or pneumatic detection oil cylinder structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113803446A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116753211A (en) * | 2023-08-11 | 2023-09-15 | 烟台星辉劳斯堡液压机械有限公司 | Position detection device of hydraulic cylinder |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110005387A1 (en) * | 2009-07-10 | 2011-01-13 | Stabilus Gmbh | Piston-Cylinder Unit |
| CN203560201U (en) * | 2013-09-27 | 2014-04-23 | 北京航天发射技术研究所 | Built-in displacement sensor capable of interferential and internal locking of hydraulic cylinder |
| CN204419759U (en) * | 2015-01-27 | 2015-06-24 | 中煤科工集团重庆研究院有限公司 | Hydraulic oil cylinder with built-in magnetostrictive displacement sensor |
| CN108518367A (en) * | 2018-04-20 | 2018-09-11 | 广州文冲船厂有限责任公司 | A kind of piston accumulator |
| CN108561368A (en) * | 2018-06-01 | 2018-09-21 | 江苏恒立液压股份有限公司 | Lift arm oil cylinder |
| CN213954054U (en) * | 2020-12-29 | 2021-08-13 | 郑州速达工业机械服务股份有限公司 | Mining hydraulic cylinder with structure changed and thrust increased |
-
2021
- 2021-09-23 CN CN202111111730.5A patent/CN113803446A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110005387A1 (en) * | 2009-07-10 | 2011-01-13 | Stabilus Gmbh | Piston-Cylinder Unit |
| CN203560201U (en) * | 2013-09-27 | 2014-04-23 | 北京航天发射技术研究所 | Built-in displacement sensor capable of interferential and internal locking of hydraulic cylinder |
| CN204419759U (en) * | 2015-01-27 | 2015-06-24 | 中煤科工集团重庆研究院有限公司 | Hydraulic oil cylinder with built-in magnetostrictive displacement sensor |
| CN108518367A (en) * | 2018-04-20 | 2018-09-11 | 广州文冲船厂有限责任公司 | A kind of piston accumulator |
| CN108561368A (en) * | 2018-06-01 | 2018-09-21 | 江苏恒立液压股份有限公司 | Lift arm oil cylinder |
| CN213954054U (en) * | 2020-12-29 | 2021-08-13 | 郑州速达工业机械服务股份有限公司 | Mining hydraulic cylinder with structure changed and thrust increased |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116753211A (en) * | 2023-08-11 | 2023-09-15 | 烟台星辉劳斯堡液压机械有限公司 | Position detection device of hydraulic cylinder |
| CN116753211B (en) * | 2023-08-11 | 2024-01-30 | 烟台星辉劳斯堡液压机械有限公司 | Position detection device of hydraulic cylinder |
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Application publication date: 20211217 |