CN211851868U - Hydraulic support and jack thereof - Google Patents
Hydraulic support and jack thereof Download PDFInfo
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- CN211851868U CN211851868U CN202020399386.9U CN202020399386U CN211851868U CN 211851868 U CN211851868 U CN 211851868U CN 202020399386 U CN202020399386 U CN 202020399386U CN 211851868 U CN211851868 U CN 211851868U
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- hall
- jack
- movable rod
- hall sensing
- cylinder body
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- 238000001514 detection method Methods 0.000 claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 239000000523 sample Substances 0.000 claims description 15
- 230000005355 Hall effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 2
- 230000004044 response Effects 0.000 description 9
- 230000006698 induction Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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Abstract
The utility model discloses a jack, which comprises a cylinder body with a pressure cavity, wherein the outer side wall of the cylinder body is provided with a detection opening communicated with the pressure cavity; the first end of the movable rod is provided with a piston used for moving along the pressure cavity; the Hall sensing magnetic block is arranged at the first end of the movable rod; and the Hall sensing detection mechanism is arranged in the detection opening and used for acquiring the position information of the Hall sensing magnetic block. The jack is not easy to damage on the basis of ensuring the accurate measurement of the telescopic stroke, and the problem that the hydraulic support needs to be frequently repaired is solved. Furthermore, the utility model also discloses a hydraulic support of including above-mentioned jack.
Description
Technical Field
The utility model relates to a hydraulic support makes technical field, especially relates to a jack. Furthermore, the utility model discloses still relate to a hydraulic support including above-mentioned jack.
Background
The hydraulic support is a structure used for controlling the mine pressure of a mining working surface. At present, in order to know and control the stroke of a jack in a hydraulic support, a proximity switch is generally arranged in a cylinder body of the jack, so that the stroke condition of the jack is known by acquiring the distance between the proximity switch and a piston end of a movable rod. However, in the process of reciprocating motion of the movable rod, the piston end of the movable rod easily collides and damages the proximity switch in the cylinder body, which causes the problem that the jack needs to be frequently maintained.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a jack, this jack is not fragile on guaranteeing flexible stroke and measuring accurate basis, has solved the problem that hydraulic support needs frequent repair. Another object of the utility model is to provide a hydraulic support including above-mentioned jack.
In order to achieve the above object, the present invention provides a jack, including: the detection device comprises a cylinder body with a pressure cavity, wherein a detection opening communicated with the pressure cavity is formed in the outer side wall of the cylinder body; the first end of the movable rod is provided with a piston used for moving along the pressure cavity; the Hall sensing magnetic block is arranged at the first end of the movable rod; and the Hall sensing detection mechanism is arranged in the detection opening and used for acquiring the position information of the Hall sensing magnetic block.
Preferably, the hall sensing magnetic block is specifically a hall sensing magnetic ring, and the hall sensing magnetic ring is arranged at the first end of the movable rod.
Preferably, the first end of the movable rod is provided with a positioning ring abutting against the first end of the hall induction magnetic ring and a positioning shaft shoulder abutting against the second end of the hall induction magnetic ring.
Preferably, the second end of the hall induction magnetic ring abuts against the first end of the piston; the detection opening is located at the bottom of the pressure chamber.
Preferably, the outer side wall of the cylinder body is further provided with an oil filling channel communicated with the bottom of the pressure cavity.
Preferably, the hall sensing detection mechanism comprises: the mounting seat is arranged on the outer side wall of the cylinder body and is provided with a mounting space communicated with the detection opening; and the Hall sensing probe is arranged in the mounting space and the detection opening and is used for acquiring the position information of the Hall sensing magnetic block.
Preferably, the mounting end of the hall sensing probe is fixedly connected with the mounting seat through a U-shaped pin.
Preferably, a sealing mechanism is arranged between the mounting seat and the hall sensing probe.
Compared with the prior art, the utility model provides a jack through producing the flexible stroke condition that hall response phenomenon obtained the movable rod between hall response detection mechanism and the hall response magnetic path. Particularly, the Hall sensing mechanism is arranged at a detection opening of the outer side wall of the cylinder body, the Hall sensing magnetic block is arranged at the first end of the movable rod, and when the movable rod does retraction movement in the cylinder body, the Hall sensing magnetic block passes through the detection opening, so that the Hall effect is generated in the Hall sensing detection mechanism, and a position signal of the Hall sensing magnetic block is obtained.
It can be seen that when the hall sensing detection mechanism acquires the position signal, the hall sensing magnetic block and the movable rod are not in direct contact with the hall sensing detection mechanism, so that the service life of the hall sensing detection mechanism can be prolonged, and the maintenance frequency of the jack is reduced.
The utility model also provides a hydraulic support, include: a base; a jack rotatably connected to the base, as described in any one of the above; and the top beam is connected with the top of the jack.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a jack according to an embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
wherein,
1-cylinder body, 11-pressure cavity, 12-detection opening, 13-oil injection channel, 2-movable rod, 21-piston, 22-positioning ring, 23-positioning shaft shoulder, 3-Hall sensing magnetic block, 4-Hall sensing detection mechanism, 41-mounting seat, 411-mounting space, 42-Hall sensing probe, 43-U-shaped pin and 44-sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a jack according to an embodiment of the present invention; fig. 2 is an enlarged view of a portion a in fig. 1.
The utility model provides a jack, as shown in fig. 1 and fig. 2, this jack mainly includes: the device comprises a cylinder body 1, a movable rod 2, a Hall sensing magnetic block 3 and a Hall sensing detection mechanism 4. The cylinder body 1 is cylindrical and is provided with a pressure cavity 11 for storing pressure medium, and the outer side wall of the cylinder body 1 is provided with a detection opening 12 communicated to the pressure cavity 11; the first end of the movable rod 2 is arranged in the pressure cavity 11, and the first end of the movable rod 2 is provided with a piston 21, and the piston 21 is contacted with a pressure medium and can move in the pressure cavity 11, so that the movable rod 2 can perform telescopic motion relative to the cylinder body 1; the Hall sensing magnetic block 3 is arranged at the first end of the movable rod 2, and when the movable rod 2 retracts relative to the cylinder body 1, the Hall sensing magnetic block 3 passes through the detection opening 12 in the stroke direction of the movable rod 2; hall response detection mechanism 4 is used for detecting the motion state of Hall response magnetic path 3, its detection end is installed in detecting opening 12 from the lateral wall of cylinder body 1, also the sense terminal of Hall response detection mechanism 4 can not be located pressure chamber 11, at the in-process that Hall response magnetic path 3 removed in cylinder body 1 like this, Hall response detection mechanism 4 will obtain the signal of telecommunication that can reflect 3 positions of Hall response magnetic path under the effect of Hall effect, then through this signal of telecommunication alright learn the stroke condition of movable rod 2.
It can be seen that the jack utilizes the magnetic induction principle to realize the non-contact measurement of the stroke information of the movable rod 2, so that the collision damage of the Hall sensing detection mechanism 4 for realizing the stroke information detection by the movable rod 2 can be avoided, namely the Hall sensing detection mechanism 4 has longer service life, and the problem that the jack needs to be frequently maintained is solved; in addition, the method for measuring by utilizing the magnetic induction principle has the advantages of high precision and strong anti-interference capability, firstly, complete data information can be obtained by transmitting the data measured by the Hall sensing detection mechanism 4 to a background, basic data is created for intelligent production work of a coal mine, and secondly, the jack can be suitable for workplaces with complex conditions.
In a first embodiment, as shown in fig. 1, the hall sensing magnetic block 3 is embodied as a hall sensing magnetic ring, and the hall sensing magnetic ring is disposed at the first end of the movable rod 2. In order to fix the position of the hall sensing magnetic ring relative to the movable rod 2, the first end of the movable rod 2 is provided with a positioning ring 22 abutting against the first end of the hall sensing magnetic ring, and the first end of the movable rod 2 is further provided with a positioning shoulder 23 abutting against the second end of the hall sensing magnetic ring.
In a second embodiment, as shown in fig. 1, the piston 21 is sleeved at the large end of the positioning shoulder 23, so that the first end of the piston 21 abuts against the second end of the hall induction magnetic ring, thereby reducing the axial stress of the positioning shoulder 23; the detection opening 12 is provided at the bottom of the pressure chamber 11 (i.e., a boundary portion away from the piston 21), and when the first end of the movable rod 2 abuts against the bottom of the pressure chamber 11, the hall-effect magnetic ring is located at the detection opening 12 just in the axial direction of the movable rod 2.
In the third embodiment, as shown in fig. 1, the outer side wall of the cylinder 1 is further provided with an oil filling channel 13 communicated with the bottom of the pressure chamber 11, that is, the pressure medium in the pressure chamber 11 is hydraulic oil, so that the jack is used as a single-acting hydraulic jack.
In the fourth embodiment, as shown in fig. 2, the hall sensing mechanism 4 mainly includes a mount 41 and a hall sensing probe 42. Wherein, the mounting seat 41 is fixed at the detection opening 12 from the outer side wall of the cylinder body 1, the mounting seat 41 is provided with a mounting space 411 communicated with the detection opening 12; the hall sensing probe 42 is fixed in the installation space 411 and the detection opening 12, and is used for measuring the position information of the hall sensing magnetic block 3 under the effect of the hall effect, and sending an electric signal capable of reflecting the position information to the background, so that the working personnel can know and record the stroke information of the movable rod 2.
It should be noted that the working principle of the hall sensing probe 42 is common knowledge in the art, and is not specifically described herein; preferably, the mounting space 411 and the detection opening 12 extend in the radial direction of the movable rod 2.
In the fifth embodiment, in order to fix the hall sensor probe 42, as shown in fig. 2, a clamping groove is provided at a portion of the hall sensor probe 42 located in the mounting space 411, and a mounting hole (not shown) for inserting the U-shaped pin 43 is provided on the mounting base 41, so that two ends of the U-shaped pin 43 sequentially pass through the mounting hole and a gap between the mounting space 411 and the clamping groove, thereby preventing the hall sensor probe 42 from being pushed out from the mounting base 41 and the detection opening 12 by the high-pressure medium in the pressure chamber 11.
In the sixth embodiment, in order to prevent the high-pressure medium in the pressure chamber 11 from leaking to the outside through the detection opening 12 and the installation space 411 in sequence, a sealing mechanism is provided between the installation base 41 and the hall sensor probe 42. Preferably, as shown in fig. 2, an annular groove is provided at a portion of the hall sensor probe 42 located in the installation space 411, and then a sealing ring 44 is provided in the annular groove to function as an oil seal; of course, it is also possible to provide a double seal groove in the installation space 411 and then provide the seal ring 44 in the double seal groove to perform an oil seal function.
The utility model provides a hydraulic support, it includes: a base, a top beam and a jack as described above. Wherein, the second end of the movable rod 2 is rotatably connected with the top beam, the cylinder body 1 is rotatably connected with the base, and the base, the top beam and other parts of the hydraulic support can refer to the prior art and are not unfolded herein.
It should be noted that, in the description of the present invention, the directions or positional relationships indicated by the "axial direction", "radial direction", "top", bottom ", and the like are the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but not for limiting the designated elements or parts to have a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, in the present specification, relational terms such as first and second, and the like may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
It is right above that the utility model provides a hydraulic support and telescopic jack thereof have carried out the detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (9)
1. A jack, comprising:
the device comprises a cylinder body (1) with a pressure cavity (11), wherein the outer side wall of the cylinder body (1) is provided with a detection opening (12) communicated with the pressure cavity (11);
the movable rod (2) is connected with the cylinder body (1), and a piston (21) which is used for moving along the pressure cavity (11) is arranged at the first end of the movable rod (2);
the Hall sensing magnetic block (3) is arranged at the first end of the movable rod (2);
and the Hall sensing detection mechanism (4) is arranged in the detection opening (12) and is used for acquiring the position information of the Hall sensing magnetic block (3).
2. Jack according to claim 1, wherein the hall sensor magnet (3) is embodied as a hall sensor magnet ring, which is provided at the first end of the movable rod (2).
3. Jack according to claim 2, wherein the first end of the movable rod (2) is provided with a positioning ring (22) abutting against the first end of the hall-effect magnetic ring and a positioning shoulder (23) abutting against the second end of the hall-effect magnetic ring.
4. Jack according to claim 3, wherein the second end of the Hall-sensitive magnetic ring abuts against the first end of the piston (21); the detection opening (12) is located at the bottom of the pressure chamber (11).
5. The jack according to claim 4, characterized in that the outer side wall of the cylinder (1) is further provided with an oil filling channel (13) communicating with the bottom of the pressure chamber (11).
6. A jack as claimed in any one of claims 1 to 5, in which the Hall sensing mechanism (4) includes:
the mounting seat (41) is arranged on the outer side wall of the cylinder body (1), and the mounting seat (41) is provided with a mounting space (411) communicated with the detection opening (12);
and the Hall sensing probe (42) is arranged in the mounting space (411) and the detection opening (12) and is used for acquiring the position information of the Hall sensing magnetic block (3).
7. Jack according to claim 6, characterized in that the mounting end of the Hall-effect probe (42) is fixedly connected to the mounting seat (41) by means of a U-shaped pin (43).
8. Jack according to claim 6, characterized in that a sealing mechanism is provided between the mounting seat (41) and the Hall-sensitive probe (42).
9. A hydraulic mount, comprising:
a base;
a lifting jack according to any one of claims 1 to 8 pivotally connected to the base;
and the top beam is connected with the top of the jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020399386.9U CN211851868U (en) | 2020-03-25 | 2020-03-25 | Hydraulic support and jack thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020399386.9U CN211851868U (en) | 2020-03-25 | 2020-03-25 | Hydraulic support and jack thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211851868U true CN211851868U (en) | 2020-11-03 |
Family
ID=73137599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020399386.9U Active CN211851868U (en) | 2020-03-25 | 2020-03-25 | Hydraulic support and jack thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211851868U (en) |
-
2020
- 2020-03-25 CN CN202020399386.9U patent/CN211851868U/en active Active
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