CN221120539U - Novel hydraulic cylinder with displacement sensor - Google Patents
Novel hydraulic cylinder with displacement sensor Download PDFInfo
- Publication number
- CN221120539U CN221120539U CN202323032356.7U CN202323032356U CN221120539U CN 221120539 U CN221120539 U CN 221120539U CN 202323032356 U CN202323032356 U CN 202323032356U CN 221120539 U CN221120539 U CN 221120539U
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- end cover
- piston rod
- sealing
- inner cavity
- hole
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 53
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 238000003780 insertion Methods 0.000 claims description 22
- 230000037431 insertion Effects 0.000 claims description 22
- 239000003921 oil Substances 0.000 abstract description 28
- 239000010720 hydraulic oil Substances 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000003139 buffering effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
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- Actuator (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model discloses a novel hydraulic cylinder with a displacement sensor, which comprises a cylinder body, an end cover, a piston rod and a sensor assembly, wherein the end cover is arranged on one side of the cylinder body, an oil inlet channel is arranged above the end cover, an electromagnetic valve is arranged at the oil inlet channel, an oil drain channel is arranged below the end cover, and a spiral sealing cover is arranged at the oil drain channel; the center of the end face of the end cover is provided with a groove, the center of the groove is provided with a through hole which is communicated with the outside, sealing rubber is arranged in the through hole, and the sealing rubber is tightly pressed by the base; the groove is matched with the end part of the piston rod, the center of the piston rod is provided with an inner cavity, and the inlet of the inner cavity is provided with a rubber sleeve; the sensor assembly comprises a sensor, a base and a detection rod, the detection rod penetrates through the through hole and then stretches into the inner cavity of the piston rod, and the periphery of the detection rod is wrapped by the rubber sleeve. The utility model designs the oil drain port, can discharge the residual hydraulic oil in the interior, facilitate the detection rod to take out; meanwhile, a plurality of groups of sealing rubber and rubber sleeves are designed for protecting the detection rod or improving the tightness, so that the service life is greatly prolonged, and the maintenance frequency is reduced.
Description
Technical Field
The utility model relates to the field of oil cylinder manufacturing, in particular to a novel hydraulic cylinder with a displacement sensor.
Background
The displacement sensor of the oil cylinder is an oil cylinder with a built-in displacement sensor waveguide tube, and consists of a measuring track made of ferromagnetic materials, a waveguide wire arranged in the measuring track, a damping element at the tail end and the like.
At present, the traditional oil cylinder with the displacement sensor is characterized in that a detection rod is directly inserted, no protective measures are taken between the detection rod and a piston rod, and collision situations can occur accidentally under the condition of running shake, so that the damage phenomenon is caused; meanwhile, when the sensor is replaced, the internal hydraulic oil is easy to leak, so that the end cover is more in external oil stain and difficult to clean.
Disclosure of utility model
The utility model aims to provide a novel hydraulic cylinder with a displacement sensor, which is convenient to assemble and disassemble and high in stability.
The purpose of the utility model is realized in the following way: the novel hydraulic cylinder with the displacement sensor comprises a cylinder body, an end cover, a piston rod and a sensor assembly, wherein the end cover is arranged on one side of the cylinder body, an oil inlet channel is arranged above the end cover, an electromagnetic valve is arranged at the oil inlet channel, an oil drainage channel is arranged below the end cover, and a spiral sealing cover is arranged at the oil drainage channel;
The center of the end face of the end cover is provided with a groove, the center of the groove is provided with a through hole communicated with the outside, sealing rubber is arranged in the through hole, and the sealing rubber is tightly pressed through a base; the groove is matched with the end part of the piston rod, an inner cavity is arranged in the center of the piston rod, and a rubber sleeve is arranged at the inlet of the inner cavity;
The sensor assembly comprises a sensor, a base and a detection rod, wherein the detection rod penetrates through the through hole and then stretches into the inner cavity of the piston rod, and the periphery of the detection rod is wrapped by the rubber sleeve.
Preferably, the inner side and the outer side of the through hole are provided with baffle rings, the inner diameter of the baffle rings at the outer side is larger than the inner diameter of the baffle rings at the inner side, and the inner diameter surface of the through hole is in a cone shape with large outer side and small inner side.
Preferably, the sealing rubber outer diameter surface is arranged in a conical shape matched with the inner diameter surface of the through hole.
Preferably, a limit groove is formed in the end face, close to the outer side, of the sealing rubber, an annular protrusion is arranged at the bottom of the base, and the protrusion is matched with the limit groove; the base is connected with the end cover through bolts.
Preferably, the inner diameter surface of the rubber sleeve is in a cone shape with large outside and small inside, and the outer end surface of the rubber sleeve is provided with a large-diameter base and is abutted against the end part of the piston rod.
Preferably, the spiral sealing cover comprises a spiral column and an insertion column, the diameter of the insertion column is smaller than that of the oil drainage channel, the insertion column is in a conical shape with a small upper part and a large lower part, the insertion column is sleeved with a sealing sleeve, the sealing sleeve is of an inner cavity structure with one end open, the inner cavity of the rubber sleeve is matched with the conical shape of the insertion column, and the height of the inner cavity is larger than that of the insertion column.
Compared with the prior art, the utility model has the following advantages:
1. The rubber sleeve is arranged at the inlet of the inner cavity of the piston rod, and can protect the detection rod when the piston rod moves forwards and backwards, so that collision between the detection rod and the inner cavity of the piston rod is avoided; meanwhile, the rubber sleeve is arranged as a large-diameter base, can be used for buffering between the end part of the piston rod and the end cover, and is provided with a conical inlet, so that the probe rod can be conveniently inserted;
2. The spiral sealing cover is in wedge-shaped fit with the sealing sleeve, and the sealing sleeve is tightly matched with the insertion column downwards after being subjected to internal oil pressure, so that higher tightness is realized;
3. The conical sealing rubber is arranged between the detection rod and the through hole, so that the sealing rubber can be extruded, the tightness between the detection rod and the sealing rubber is enhanced, the leakage of internal hydraulic oil is avoided, meanwhile, the sealing rubber is provided with a groove matched with the base bulge, the displacement of the sealing rubber is further avoided, and the stability is improved;
4. The lower part of the end cover is provided with the oil drain port, the electromagnetic valve of the oil inlet channel is matched, the discharge of hydraulic oil in the hydraulic cylinder is realized, the phenomenon that the back hydraulic oil flows out of the through hole after the internal detection rod is pulled out when the sensor is replaced is avoided, and the post treatment is more troublesome.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an enlarged view of the structure at a in fig. 1.
Fig. 3 is an enlarged view of the structure at B in fig. 1.
Fig. 4 is an enlarged view of the structure at C in fig. 1.
The device comprises a cylinder body 1, a end cover 2, a groove 201, a through hole 202, a baffle ring 203, a piston rod 3, an inner cavity 301, a sensor component 4, a sensor 401, a base 402, a protrusion 4021, a detection rod 403, an oil inlet channel 5, an electromagnetic valve 6, an oil drain channel 7, a spiral sealing cover 8, a spiral column 801, an insertion column 802, sealing rubber 9, a groove 901, a rubber sleeve 10 and a sealing sleeve 11.
Detailed Description
Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.
It should be noted that, in the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," "overhang," and the like do not denote that the component is required to be absolutely horizontal or overhang, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or communicating between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
1-4, A novel hydraulic cylinder with a displacement sensor comprises a cylinder body 1, an end cover 2, a piston rod 3 and a sensor assembly 4, wherein the end cover 2 is arranged on one side of the cylinder body 1, an oil inlet channel 5 is arranged above the end cover 2, an electromagnetic valve 6 is arranged at the oil inlet channel 5, an oil drain channel 7 is arranged below the end cover 2, and a spiral sealing cover 8 is arranged at the oil drain channel 7;
A groove 201 is arranged in the center of the end face of the end cover 2, a through hole 202 is arranged in the center of the groove 201 and communicated with the outside, and sealing rubber 9 is arranged in the through hole 202; the groove 201 is matched with the end part of the piston rod 3, an inner cavity 301 is arranged in the center of the piston rod 3, a rubber sleeve 10 is arranged at the inlet of the inner cavity 301, and the rubber sleeve is used for protecting the detection rod;
The sensor assembly 4 comprises a sensor 401, a base 402 and a detection rod 403, wherein the detection rod 403 penetrates through the through hole and then stretches into the inner cavity of the piston rod 3, and the periphery of the detection rod 403 is wrapped by a rubber sleeve.
As shown in fig. 2, the inner side and the outer side of the through hole 202 are provided with baffle rings 203, the inner diameter of the outer baffle ring 203 is larger than the inner diameter of the inner baffle ring 203, the inner diameter surface of the through hole 202 is in a cone shape with large outer and small inner, sealing rubber can be clamped between the two groups of baffle rings, when the sensor base is taken down and the detecting rod is pulled out, the sealing rubber cannot move out along with the detecting rod, the follow-up operation of installing the sealing rubber is avoided, and the efficiency is improved.
As shown in fig. 2, the outer diameter surface of the sealing rubber 9 is tapered to match the inner diameter surface of the through hole 202, so that the sealing rubber can form wedge-shaped fit after extrusion, and the sealing performance is improved.
As shown in fig. 2, a limit groove 901 is formed in the end face of the sealing rubber 9, which is close to the outer side, an annular protrusion 4021 is formed in the bottom of the base 402, and the protrusion 4021 is matched with the limit groove 901; the base 402 is connected with the end cover 2 through bolts, and the sealing rubber is extruded through the base, so that the sealing rubber is deformed, and the tightness between the sealing rubber and the detection rod is improved.
As shown in fig. 3, the inner diameter surface of the rubber sleeve 10 is in a cone shape with large outside and small inside, and the outer end surface of the rubber sleeve 10 is provided with a large diameter base 1001 which is abutted against the end part of the piston rod, so that the rubber sleeve can be used for buffering between the end part of the piston rod and the end cover, and the conical inlet is convenient for the insertion of the detection rod; meanwhile, the large-diameter base can also prevent the rubber sleeve from sliding into the inner cavity.
As shown in fig. 4, the spiral sealing cover 8 includes a spiral column 801 and an insertion column 802, the diameter of the insertion column 802 is smaller than that of the oil drainage channel, the insertion column 802 is in a conical shape with a small upper part and a large lower part, the insertion column 802 is sleeved with a sealing sleeve 11, the sealing sleeve 11 is in an inner cavity structure with one end open, the inner cavity of the rubber sleeve 11 is matched with the conical shape of the insertion column 802, the height of the inner cavity is larger than that of the insertion column, and the sealing sleeve is pressed downwards to be matched with the conical insertion column after being pressed, so that the tightness is improved, and the leakage condition is caused by sealing.
The working principle of the utility model is explained as follows: the high tightness is realized through the cooperation of the spiral sealing cover and the sealing sleeve, the sealing rubber, the sealing sleeve and other structures, and meanwhile, the oil draining port can drain the hydraulic oil participated in the inside, so that the influence on the end cover during the replacement of the sensor is avoided;
The step of detaching the sensor detecting rod is as follows: and (3) operating the piston rod to the minimum stroke, closing the electromagnetic valve of the oil inlet channel, opening the spiral sealing cover at the bottom to discharge residual hydraulic oil in the oil inlet channel, and then taking out the detection rod.
The above examples are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the spirit and scope of the present utility model. Various modifications and improvements of the technical scheme of the present utility model will fall within the protection scope of the present utility model without departing from the design concept of the present utility model, and the technical content of the present utility model is fully described in the claims.
Claims (6)
1. The novel hydraulic cylinder with the displacement sensor comprises a cylinder body, an end cover, a piston rod and a sensor assembly, and is characterized in that the end cover is arranged on one side of the cylinder body, an oil inlet channel is arranged above the end cover, an electromagnetic valve is arranged at the oil inlet channel, an oil drainage channel is arranged below the end cover, and a spiral sealing cover is arranged at the oil drainage channel;
The center of the end face of the end cover is provided with a groove, the center of the groove is provided with a through hole communicated with the outside, sealing rubber is arranged in the through hole, and the sealing rubber is tightly pressed through a base; the groove is matched with the end part of the piston rod, an inner cavity is arranged in the center of the piston rod, and a rubber sleeve is arranged at the inlet of the inner cavity;
The sensor assembly comprises a sensor, a base and a detection rod, wherein the detection rod penetrates through the through hole and then stretches into the inner cavity of the piston rod, and the periphery of the detection rod is wrapped by the rubber sleeve.
2. The novel hydraulic cylinder with the displacement sensor according to claim 1, wherein a baffle ring is arranged on the inner side and the outer side of the through hole, the inner diameter of the baffle ring on the outer side is larger than the inner diameter of the baffle ring on the inner side, and the inner diameter surface of the through hole is in a cone shape with large outer side and small inner side.
3. A novel hydraulic cylinder with a displacement sensor according to claim 1, wherein the sealing rubber outer diameter surface is provided in a tapered shape matching the inner diameter surface of the through hole.
4. The novel hydraulic cylinder with the displacement sensor according to claim 1, wherein a limit groove is formed in the end face of the sealing rubber, which is close to the outer side, and an annular protrusion is formed in the bottom of the base and matched with the limit groove; the base is connected with the end cover through bolts.
5. The novel hydraulic cylinder with the displacement sensor according to claim 1, wherein the inner diameter surface of the rubber sleeve is in a cone shape with a large outer diameter and a small inner diameter, and the outer end surface of the rubber sleeve is provided with a large diameter base and is abutted against the end part of the piston rod.
6. The novel hydraulic cylinder with the displacement sensor according to claim 1, wherein the spiral sealing cover comprises a spiral column and an insertion column, the diameter of the insertion column is smaller than that of the oil drainage channel, the insertion column is in a cone shape with a small upper part and a large lower part, the insertion column is sleeved with a sealing sleeve, the sealing sleeve is of an inner cavity structure with one open end, the inner cavity of the rubber sleeve is matched with the cone shape of the insertion column, and the height of the inner cavity is larger than that of the insertion column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323032356.7U CN221120539U (en) | 2023-11-09 | 2023-11-09 | Novel hydraulic cylinder with displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323032356.7U CN221120539U (en) | 2023-11-09 | 2023-11-09 | Novel hydraulic cylinder with displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221120539U true CN221120539U (en) | 2024-06-11 |
Family
ID=91363177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323032356.7U Active CN221120539U (en) | 2023-11-09 | 2023-11-09 | Novel hydraulic cylinder with displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221120539U (en) |
-
2023
- 2023-11-09 CN CN202323032356.7U patent/CN221120539U/en active Active
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