CN220395722U - Visual stop device of hydraulic support stand - Google Patents
Visual stop device of hydraulic support stand Download PDFInfo
- Publication number
- CN220395722U CN220395722U CN202321938446.XU CN202321938446U CN220395722U CN 220395722 U CN220395722 U CN 220395722U CN 202321938446 U CN202321938446 U CN 202321938446U CN 220395722 U CN220395722 U CN 220395722U
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- hydraulic support
- piston rod
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- utility
- height
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- 230000000007 visual effect Effects 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000005065 mining Methods 0.000 description 9
- 239000003245 coal Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000003211 malignant effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013077 scoring method Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of hydraulic support columns and discloses a visual limiting device of a hydraulic support column. The visual limiting device provided by the utility model can rapidly, efficiently, scientifically and conveniently judge whether the hydraulic support is lowered to the limit height required to take measures by observing whether the column casing is deformed, so that the occurrence of electromechanical accidents of the pressing frame interference is effectively reduced, and the safe production of the working face is ensured.
Description
Technical Field
The utility model relates to the technical field of hydraulic support columns, in particular to a visual limiting device for a hydraulic support column.
Background
In order to ensure the safety operation space of the fully mechanized mining face working slide driving, a general working slide machine head and a machine tail motor are protected by a head-discharging and tail-discharging hydraulic support. Because the pressure of the head plates of the front section of the crossheading roadway at the two ends of the fully mechanized mining face is too large, the insufficient control can lead to the insufficient travel of the piston rods of the hydraulic supports for head and tail arrangement to be 200mm, and the specified requirements are not met, if the hydraulic supports cannot be found and controlled in advance, the situation that the supports are pressed and cannot be pulled and moved due to the fact that the upright columns of the hydraulic supports do not have the travel can finally occur, and meanwhile, the electromechanical accidents of hydraulic supports for crushing the hydraulic slide drive can also occur due to the fact that the hydraulic supports are too low.
Under the normal condition, the hydraulic support worker can determine whether the stroke of the piston rod is less than 200mm by feeling, and determine whether the upright post of the hydraulic support is interfered with the hydraulic motor by experience, so that the mode is not visual enough, such as that the personal experience is insufficient, and the fault judgment finally causes a malignant electromechanical accident, equipment is damaged, the production of the mining face is impossible, and the accident handling difficulty is increased.
Disclosure of Invention
The utility model provides a visual limiting device for a hydraulic support upright post, which aims to solve the technical problem that the mode of judging the piston rod stroke in the prior art is not visual and unreliable.
The technical scheme adopted by the utility model is as follows: the utility model provides a visual stop device of hydraulic support stand, the hydraulic support stand includes the cylinder, is provided with the piston rod in the cylinder, but stop device includes elastic deformation's column casing, and the height of column casing equals the predetermined restriction height of piston rod, and the column casing cover is in the upper portion of piston rod, and the column casing lower extreme supports the upper end at the cylinder.
Further, the upper end and the lower end of the column casing are provided with convex edges in a radial outward protruding mode.
Further, the height of the column casing is 200mm.
Further, the column casing is made of flame-retardant polyurethane materials.
The visual limiting device provided by the utility model can rapidly, efficiently, scientifically and conveniently judge whether the hydraulic support is lowered to the limit height required to take measures by observing whether the column casing is deformed, so that the occurrence of electromechanical accidents of the pressing frame interference is effectively reduced, and the safe production of the working face is ensured.
Drawings
FIG. 1 is an elevation view of a hydraulic mount post of the present utility model;
FIG. 2 is a front view of the present utility model;
fig. 3 is a schematic view of the piston rod of the present utility model lowered beyond a limited height.
In the figure: 1. a cylinder; 2. a piston rod; 3. a column casing; 4. convex edges.
Detailed Description
In order to better understand the purpose, structure and function of the present utility model, the following describes in detail a visual limiting device for a hydraulic support column according to the present utility model with reference to the accompanying drawings.
As shown in fig. 1 and 2, a visual limiting device of a hydraulic support stand column comprises a cylinder barrel 1, a piston rod 2 is arranged in the cylinder barrel 1, the limiting device comprises a column barrel 3 capable of elastically deforming, the height of the column barrel 3 is equal to the preset limiting height of the piston rod 2, the column barrel 3 is sleeved on the upper portion of the piston rod 2, and the lower end of the column barrel 3 abuts against the upper end of the cylinder barrel 1. The cylinder 3 is mounted on the piston rod 2, when the effective stroke of the piston rod 2 is below a predetermined limit height of the piston rod 2, i.e.: when the upright post of the hydraulic support is lowered to the limit height matched with the coal cutter and the working slide, the column casing 3 deforms immediately, and the operator is reminded to take measures immediately.
The design principle of the utility model is to determine the stroke height of the stand column of the hydraulic support according to the lowest mining height, ensure that the stroke of the piston rod is not less than 200mm, and leave a margin of 200mm as the preset limiting height of the piston rod 2. The height of the barrel 3 is equal to the predetermined limit height of the piston rod 2.
The column casing 3 adopts flame-retardant polyurethane material, and according to the external diameter size of the piston rod 2, the polyurethane material is processed into the column casing 3 which can be sleeved outside the column piston rod 2, the upper end and the lower end of the column casing 3 are radially outwards protruded and provided with convex edges 4, and the stress area can be increased by the convex edges 4 additionally arranged on two sides. As shown in fig. 3, the cylinder 3 is sleeved on the piston rod 2, when the effective stroke of the piston rod 2 is smaller than the height of the cylinder 3, the cylinder 3 can be obviously deformed, and an operator can directly judge that the height of the hydraulic support is too low and take response measures in advance.
The device is mainly applied to hydraulic support columns of the head and tail rows of the fully mechanized mining face, and can prevent the situation that the support is pressed and cannot be pulled and moved and the malignant accident that the hydraulic support front beam, the top beam or the tail beam is crushed and the working slide is driven due to the fact that the piston rod 2 stroke of the hydraulic support column is smaller than 200mm and cannot meet the requirements of regulations (namely, basic requirements and scoring methods of the standardized management system for coal mine safety production) due to the fact that the top plate pressure of the front section of the gateway roadway on two sides of the coal mining face is overlarge.
At present, the utility model is popularized and used on the fully mechanized mining face, and has good response from the aspect of use effect. Compared with the prior art that the limit height of the hydraulic support is judged by feeling and experience, the hydraulic support is more convenient, visual, quick and reliable, and is a scientific minimum mining height management and control device for the fully-mechanized mining face.
It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (4)
1. The utility model provides a visual stop device of hydraulic support stand, hydraulic support stand includes cylinder (1), is provided with piston rod (2) in cylinder (1), its characterized in that, but stop device includes elastically deformable's barrel (3), and the height of barrel (3) equals the reservation restriction height of piston rod (2), and barrel (3) cover is in the upper portion of piston rod (2), and the upper end at cylinder (1) is supported to barrel (3) lower extreme.
2. The visual limiting device of the hydraulic support upright post according to claim 1, wherein the upper end and the lower end of the column casing (3) are provided with convex edges (4) protruding outwards in a radial direction.
3. Visual limiting device for hydraulic support uprights according to claim 1, characterized in that the height of the spar (3) is 200mm.
4. The visual limiting device of the hydraulic support upright post according to any one of claims 1-3, wherein the column casing (3) is made of flame-retardant polyurethane materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321938446.XU CN220395722U (en) | 2023-07-24 | 2023-07-24 | Visual stop device of hydraulic support stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321938446.XU CN220395722U (en) | 2023-07-24 | 2023-07-24 | Visual stop device of hydraulic support stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220395722U true CN220395722U (en) | 2024-01-26 |
Family
ID=89610259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321938446.XU Active CN220395722U (en) | 2023-07-24 | 2023-07-24 | Visual stop device of hydraulic support stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220395722U (en) |
-
2023
- 2023-07-24 CN CN202321938446.XU patent/CN220395722U/en active Active
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