CN213574143U - Thick coal seam roof cutting pillar tilting prevention device - Google Patents
Thick coal seam roof cutting pillar tilting prevention device Download PDFInfo
- Publication number
- CN213574143U CN213574143U CN202021289834.6U CN202021289834U CN213574143U CN 213574143 U CN213574143 U CN 213574143U CN 202021289834 U CN202021289834 U CN 202021289834U CN 213574143 U CN213574143 U CN 213574143U
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- Prior art keywords
- jack
- prevention device
- coal seam
- cutting
- spring
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- 239000003245 coal Substances 0.000 title claims abstract description 25
- 230000002265 prevention Effects 0.000 title claims abstract description 22
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005065 mining Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 6
- 239000011111 cardboard Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010878 waste rock Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
The utility model belongs to the technical field of coal mining, in particular to a thick coal seam roof cutting prop tilting prevention device, which comprises a roof cutting prop body, wherein a stand column is installed at the top end of the roof cutting prop body, the right end of the rear surface of the roof cutting prop body is rotatably connected with a jack, a base is installed on the end surface of the jack, the upper surface of the base is rotatably connected with a hydraulic rod, and a telescopic shaft of the hydraulic rod is fixedly provided with a snap ring; after the contained angle adjustment between will cut a pillar body and the jack to required contained angle, with the push rod in the fixed slot roll out, start the push rod, its telescopic shaft slides, it is fixed with cutting a pillar body to pass through the catching groove with the couple, foretell cooperation is used, make the contained angle can be fixed, cooperate the third spring simultaneously and make and receive certain tension effect between the two, play the effect of restriction, do benefit to the fixed of contained angle, reduce the condition that the device appears and cut a pillar body displacement, improve the stability of cutting a pillar body.
Description
Technical Field
The utility model belongs to the technical field of the coal mining, concretely relates to thick coal seam topping pillar tilting prevention device.
Background
The roof cutting support column has the main functions of replacing special support forms such as a wood pile, a table shed, a waste rock band, a coal bed, a cluster column and the like, improving the support strength on a roof laying line, effectively separating the roof connection between a roof control area and a mining control area, solving the problem of the front section of a mining face conveyor and realizing mechanized coal charging, and has the characteristics of high resistance, capability of obviously improving the support strength, safety, reliability, convenient operation and production efficiency improvement.
The prior art has the following problems:
1. the existing anti-falling device for the top-cutting strut has the advantages that because the included angle between the top-cutting strut body and the jack is adjustable, and because a fixing device is not arranged between the top-cutting strut body and the jack, the included angle is easy to change, displacement is caused, and the stability of the top-cutting strut is influenced;
2. the contact surface between current roof cutting pillar tilting prevention device and the roof cutting pillar is the plane setting, does not set for according to the profile of roof cutting pillar, influences the firmness that both connect, has certain limitation.
In order to solve the problem, the application provides a thick coal seam roof cutting pillar tilting prevention device.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides a thick coal seam roof cutting pillar tilting prevention device has the difficult change of contained angle, is difficult for the displacement, and is stable good, characteristics that the firmness is high.
In order to achieve the above object, the utility model provides a following technical scheme: a thick coal seam roof cutting prop tilting prevention device comprises a roof cutting prop body, wherein the top end of the roof cutting prop body is provided with an upright post, the right end of the rear surface of the top cutting strut body is rotatably connected with a jack, the end surface of the jack is provided with a base, the upper surface of the base is rotatably connected with a hydraulic rod, a telescopic shaft of the hydraulic rod is fixedly provided with a snap ring, a cushion layer is fixedly bonded on the inner side wall of the snap ring, two ends of the snap ring are fixedly connected with a second spring, a clamping plate is arranged on the end surface of the second spring, a sleeve with a hollow inner part is fixedly arranged on the outer side wall of one end of the jack close to the base, the inner bottom surface of the sleeve is fixedly connected with a first spring, the outer side wall of the bottom end of the upright post is rotatably connected with a connecting rod, the connecting rod is positioned in the sleeve, and the top end of the first spring is fixedly connected with the bottom surface of the connecting rod;
a plurality of catching grooves have been seted up to the rear surface equidistance of support pillar body of cutting the top, the jack is close to the fixed slot has been seted up to one side of support pillar body of cutting the top, the inside of fixed slot is rotated and is connected with the push rod, the couple is installed to the telescopic shaft of push rod, the third spring is installed to the rear surface left end in catching groove, the rear end of third spring with jack fixed connection, the inside bonding of fixed slot is fixed with the gasbag.
As the utility model relates to a thick coal seam roof cutting pillar tilting prevention device is preferred, snap ring, two the second spring and two the cardboard constitutes the semicircle loop structure.
As the utility model relates to a thick coal seam roof cutting pillar tilting prevention device is preferred, semicircular ring structure's opening is less than the external diameter of stand.
As the utility model relates to a thick coal seam roof cutting pillar tilting prevention device is preferred, the external diameter of connecting rod with telescopic internal diameter adaptation each other.
As the utility model relates to a thick coal seam roof cutting pillar tilting prevention device is preferred, the third spring is located the outside of push rod.
As the utility model relates to a thick coal seam roof cutting pillar tilting prevention device is preferred, and is a plurality of the catching groove is the strip and links to each other and distributes the rear surface of roof cutting pillar body.
As the utility model relates to a thick coal seam roof cutting pillar tilting prevention device is preferred, the fixed backing plate that is equipped with in bottom surface of jack, roof cutting pillar body the backing plate with the bottom surface of jack is in same water flat line.
Compared with the prior art, the beneficial effects of the utility model are that:
1. after the contained angle adjustment between will cut a pillar body and the jack to required contained angle, with the push rod in the fixed slot roll out, start the push rod, its telescopic shaft slides, it is fixed with cutting a pillar body to pass through the catching groove with the couple, foretell cooperation is used, make the contained angle can be fixed, cooperate the third spring simultaneously and make and receive certain tension effect between the two, play the effect of restriction, do benefit to the fixed of contained angle, reduce the condition that the device appears and cut a pillar body displacement, improve the stability of cutting a pillar body.
2. Because of the snap ring, two second springs and two cardboards constitute the semicircle ring structure, accord with the lateral wall of stand, and semicircle ring structure's opening is less than the external diameter of stand, go into the in-process of stand lateral wall when semicircle ring structure card, the second spring receives the extrusion, make the open-ended external diameter that is greater than the stand, when the lateral wall of cushion contact stand of semicircle ring structure, because of the cushion is the silica gel material, antifriction, increase the frictional force between semicircle ring structure and the stand, later second spring reconversion, make the cardboard chucking at the lateral wall of stand, make the device and stand and whole firmness of cutting a pillar body high, make cutting a pillar body be difficult for empting.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an installation view of the snap ring, the second spring and the snap plate of the present invention;
fig. 3 is a partially connected top view of the topping strut body and the jack in the present invention;
FIG. 4 is a view illustrating the installation of the air bag and the fixing groove according to the present invention;
in the figure: 1. a topping strut body; 2. a column; 3. a jack; 4. a base; 5. a base plate; 6. a hydraulic lever; 7. a snap ring; 8. a sleeve; 9. a first spring; 10. a connecting rod; 11. a cushion layer; 12. a second spring; 13. clamping a plate; 14. hooking a groove; 15. fixing grooves; 16. a push rod; 17. hooking; 18. a third spring; 19. an air bag.
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.
Example 1
As shown in fig. 1 and 2;
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an installation view of the snap ring, the second spring and the snap plate of the present invention;
a thick coal seam roof-cutting strut tilting prevention device comprises a roof-cutting strut body 1, a stand column 2 is installed at the top end of the roof-cutting strut body 1, a jack 3 is rotatably connected to the right end of the rear surface of the roof-cutting strut body 1, a base 4 is installed on the end face of the jack 3, a hydraulic rod 6 is rotatably connected to the upper surface of the base 4, a snap ring 7 is fixedly arranged on a telescopic shaft of the hydraulic rod 6, a cushion layer 11 is fixedly bonded to the inner side wall of the snap ring 7, second springs 12 are fixedly connected to the two ends of the snap ring 7, a snap plate 13 is installed on the end face of each second spring 12, a hollow sleeve 8 is fixedly arranged on the outer side wall of one end, close to the base 4, of the jack 3, a first spring 9 is fixedly connected to the inner bottom surface of the sleeve 8, a connecting rod 10 is rotatably connected to the outer side wall of the bottom end;
as shown in fig. 1, 3 and 4;
fig. 1 is a schematic structural view of the present invention;
fig. 3 is a partially connected top view of the topping strut body and the jack in the present invention;
FIG. 4 is a view illustrating the installation of the air bag and the fixing groove according to the present invention;
a plurality of catching grooves 14 have been seted up to the rear surface equidistance of support column body 1 of cutting the top, fixed slot 15 has been seted up to jack 3 near one side of support column body 1 of cutting the top, and the inside of fixed slot 15 rotates and is connected with push rod 16, and couple 17 is installed to the telescopic shaft of push rod 16, and third spring 18 is installed to the rear surface left end of catching groove 14, and the rear end and the jack 3 fixed connection of third spring 18, the inside bonding of fixed slot 15 is fixed with gasbag 19.
It should be noted that: in this embodiment, the snap ring 7 and the snap plate 13 are made of 304 stainless steel, have high hardness and are not easy to deform, and the service life is prolonged.
In this embodiment: after the included angle between the top-cutting pillar body 1 and the jack 3 is adjusted to the required included angle, the push rod 16 in the fixed groove 15 is rotated out, the push rod 16 is started, the telescopic shaft slides, the hook 17 is fixed with the top-cutting pillar body 1 through the hook groove 14, the included angle is fixed by the cooperation of the above, the push rod 16 and the third spring 18 are matched to enable the two to be under certain tension, the limiting effect is achieved, the fixing of the included angle is facilitated, the displacement of the device and the top-cutting pillar body 1 is reduced, the stability of the top-cutting pillar body 1 is improved, when the push rod 16 is not used, the push rod 16 can be directly rotated into the fixed groove 15, the air bag 19 has deformation force, the push rod 16 can be wrapped and fixed through the air bag 19, the effect of protecting the push rod 16 is facilitated, after the angle is adjusted, the connecting rod 10 is pulled out from the inside of the sleeve 8, meanwhile, the first spring 9 is stretched, under the elastic action of the first spring 9, the sleeve 8 and the connecting rod 10 have good buffering effect and are beneficial to stable stretching, then the hydraulic rod 6 on the base 4 is rotated, a semicircular ring structure is formed by the clamp ring 7, the two second springs 12 and the two clamping plates 13 and conforms to the outer side wall of the upright post 2, the opening of the semicircular ring structure is smaller than the outer diameter of the upright post 2, when the semicircular ring structure is clamped into the outer side wall of the upright post 2, the second springs 12 are extruded to enable the opening to be larger than the outer diameter of the upright post 2, when the cushion layer 11 of the semicircular ring structure contacts the outer side wall of the upright post 2, the cushion layer 11 is made of silica gel, friction resistance is achieved, the friction force between the semicircular ring structure and the upright post 2 is increased, then the second springs 12 are restored to the original state, the clamping plates 13 are clamped on the outer side wall of the upright post 2, make the top-cutting pillar body 1 be difficult for empting, and the backing plate 5 of base 4 and 6 bottom surfaces of hydraulic stem is the rubber material for increase both and the frictional force of bottom surface, do benefit to the device and stabilize and be difficult for empting.
As shown in fig. 2;
FIG. 2 is an installation view of the snap ring, the second spring and the snap plate of the present invention;
in an alternative embodiment, the snap ring 7, the two second springs 12 and the two catch plates 13 form a semi-circular ring structure.
In this embodiment: the semicircular ring structure conforms to the outline of the stand column 2, and the firmness of the structure and the stand column 2 in connection is enhanced, so that the firmness of the device and the topping strut body 1 is enhanced.
As shown in fig. 1 and 2;
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an installation view of the snap ring, the second spring and the snap plate of the present invention;
in an alternative embodiment, the opening of the semi-circular ring structure is smaller than the outer diameter of the upright 2.
In this embodiment: when semicircle ring structure card was in the lateral wall of stand 2, do benefit to the difficult lateral wall that follows stand 2 of semicircle ring structure and drop.
As shown in fig. 1;
fig. 1 is a schematic structural view of the present invention;
in an alternative embodiment, the outer diameter of the connecting rod 10 and the inner diameter of the sleeve 8 are adapted to each other.
In this embodiment: the connecting rod 10 can slide in the sleeve 8 conveniently, and the smoothness of sliding is improved.
As shown in fig. 3;
fig. 3 is a partially connected top view of the topping strut body and the jack in the present invention;
in an alternative embodiment, the third spring 18 is located outside the push rod 16.
In this embodiment: the third spring 18 is used for supporting the part between the jack support body 1 and the jack 3, so that the included angle is not easy to change.
As shown in fig. 3;
fig. 3 is a partially connected top view of the topping strut body and the jack in the present invention;
in an alternative embodiment, the plurality of hook grooves 14 are in a strip shape and are continuously distributed on the rear surface of the topping strut body 1.
In this embodiment: the hook 17 on the push rod 16 at different positions can be fixed conveniently, and the range of fixing different included angles is enlarged.
As shown in fig. 1;
fig. 1 is a schematic structural view of the present invention;
in an alternative embodiment, a backing plate 5 is fixedly arranged on the bottom surface of the jack 3, and the bottom surfaces of the top-cutting pillar body 1, the backing plate 5 and the jack 3 are in the same horizontal line.
In this embodiment: the friction force between the jack 3 and the base 4 and the ground is increased through the backing plate 5, so that the device is not easy to displace.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a thick coal seam roof column tilting prevention device, includes roof column body (1), stand (2) are installed on the top of roof column body (1), the rear surface right-hand member of roof column body (1) rotates and is connected with jack (3), base (4) are installed to the terminal surface of jack (3), the upper surface of base (4) rotates and is connected with hydraulic stem (6), its characterized in that: a clamping ring (7) is fixedly arranged on a telescopic shaft of the hydraulic rod (6), a cushion layer (11) is fixedly bonded on the inner side wall of the clamping ring (7), second springs (12) are fixedly connected to the two ends of the clamping ring (7), a clamping plate (13) is installed on the end face of each second spring (12), a hollow sleeve (8) is fixedly arranged on the outer side wall of one end, close to the base (4), of the jack (3), a first spring (9) is fixedly connected to the bottom surface of the inner portion of the sleeve (8), a connecting rod (10) is rotatably connected to the outer side wall of the bottom end of the upright post (2), the connecting rod (10) is located inside the sleeve (8), and the top end of the first spring (9) is fixedly connected with the bottom surface of the connecting rod (10);
cut the rear surface equidistance of top pillar body (1) and seted up a plurality of colluding groove (14), jack (3) are close to fixed slot (15) have been seted up to one side of top pillar body (1), the inside of fixed slot (15) is rotated and is connected with push rod (16), couple (17) are installed to the telescopic shaft of push rod (16), third spring (18) are installed to the rear surface left end in colluding groove (14), the rear end of third spring (18) with jack (3) fixed connection, the inside bonding of fixed slot (15) is fixed with gasbag (19).
2. The thick coal seam roof cutting pillar tilting prevention device of claim 1, characterized in that: the snap ring (7), the two second springs (12) and the two clamping plates (13) form a semi-circular structure.
3. The thick coal seam roof cutting pillar tilting prevention device of claim 2, characterized in that: the opening of the semicircular ring structure is smaller than the outer diameter of the upright post (2).
4. The thick coal seam roof cutting pillar tilting prevention device of claim 1, characterized in that: the outer diameter of the connecting rod (10) and the inner diameter of the sleeve (8) are matched with each other.
5. The thick coal seam roof cutting pillar tilting prevention device of claim 1, characterized in that: the third spring (18) is located outside the push rod (16).
6. The thick coal seam roof cutting pillar tilting prevention device of claim 1, characterized in that: the hook grooves (14) are strip-shaped and are connected and distributed on the rear surface of the top-cutting strut body (1).
7. The thick coal seam roof cutting pillar tilting prevention device of claim 1, characterized in that: the bottom surface of jack (3) is fixed and is equipped with backing plate (5), cut top pillar body (1), backing plate (5) and the bottom surface of jack (3) is in same horizontal line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021289834.6U CN213574143U (en) | 2020-07-03 | 2020-07-03 | Thick coal seam roof cutting pillar tilting prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021289834.6U CN213574143U (en) | 2020-07-03 | 2020-07-03 | Thick coal seam roof cutting pillar tilting prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213574143U true CN213574143U (en) | 2021-06-29 |
Family
ID=76550946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021289834.6U Expired - Fee Related CN213574143U (en) | 2020-07-03 | 2020-07-03 | Thick coal seam roof cutting pillar tilting prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213574143U (en) |
-
2020
- 2020-07-03 CN CN202021289834.6U patent/CN213574143U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210629 |