CN212154802U - Mining protective net device - Google Patents
Mining protective net device Download PDFInfo
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- CN212154802U CN212154802U CN202020860016.0U CN202020860016U CN212154802U CN 212154802 U CN212154802 U CN 212154802U CN 202020860016 U CN202020860016 U CN 202020860016U CN 212154802 U CN212154802 U CN 212154802U
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- protective net
- fixed
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- movable
- anchor chain
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Abstract
The utility model provides a mining protective net device, which comprises a fixed protective net, wherein the fixed protective net is arranged between stand columns of a bracket close to the coal wall of a working surface; the support upright posts are upwards telescopic and are used for adapting to top plates with different heights; the mining protective net device also comprises a movable protective net and an anchor chain; the movable protective net is sleeved with the fixed protective net in a sliding mode in the vertical direction, the lower end of the anchor chain is fixedly connected with the upper end of the movable protective net, and the upper end of the anchor chain is fixedly connected with the telescopic end of the support stand column. Compared with the prior art, the utility model provides a technical scheme drives to slide at the flexible section of support stand and cup joints the activity protection network on fixed protection network and slide from top to bottom through the anchor chain to can be according to the lift of support stand and coal rock mass and the height of automatically regulated activity protection network thereupon, and then realize totally closed protection, and the fixed design that the cover can be worn with fixed protection network to activity protection network, firm reliable, impact strength is big, and the protecting effect is good.
Description
Technical Field
The utility model belongs to the technical field of the safety in coal mine production, concretely relates to mining protection network device.
Background
At present, the pressure of a roadway is increased along with the increase of the mining depth of a mine in China, some mines have impact tendencies in the coal mining process, and the rock burst becomes one of the important disasters of the safety production of the current coal mines.
The hydraulic support of the fully mechanized coal mining face is important guarantee equipment for roof safety protection of a coal mining field, has an active protection effect on roof support, cannot fully consider the lateral impact protection on the coal wall of the working face, and can cause injury to field operation personnel once the coal wall has large slide slope or lateral impact.
In general, in order to prevent this risk, a fixed protective net is provided between the front pillars of the hydraulic bracket. Due to the change of the mining height of the field bracket, if the protective net is arranged too high, the sight of an operator and the lowest support height of the bracket are influenced; the arrangement is too low, and the fully-closed protection cannot be performed, so that the impact protection effect can be influenced. Therefore, the manufacturing of the protective net capable of automatically stretching along with the lifting of the support has great significance for mines with dangers of rock burst.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problem that traditional protection network exists, satisfy the requirement that the protection is more comprehensive, the protecting against shock effect is better when the support risees or reduces, the utility model provides a mining protection network device.
The utility model provides a technical scheme as follows:
a mining protective net device comprises a fixed protective net, wherein the fixed protective net is arranged between stand columns of a bracket close to a coal wall of a working face; the stand column of the bracket can extend upwards and is used for adapting to top plates with different heights; the method is characterized in that: the mining protective net device also comprises a movable protective net and an anchor chain; the movable protective net is sleeved with the fixed protective net in a sliding mode in the vertical direction, the lower end of the anchor chain is fixedly connected with the upper end of the movable protective net, and the upper end of the anchor chain is fixedly connected with the telescopic end of the support stand column.
Furthermore, the support stand column is a hydraulic telescopic stand column.
Furthermore, the fixed protective net and the stand column of the bracket are fixedly connected, and fixed ear holes are formed in the positions of the fixed protective net and the stand column of the bracket.
Furthermore, the fixed earholes are four in number, two on each side, and are fixedly connected with the support stand columns through U-shaped bolts.
Further, the spacing between the fixing ear holes on each side is 248mm-350 mm.
Further, fixed protection network adopts L shaped steel structure angle bar and rhombus steel mesh to weld and forms, be provided with in the fixed protection network and slide the recess that cup joints with activity protection network looks adaptation, activity protection network cup joints in the recess slide from top to bottom under the concertina action of support stand.
Furthermore, the movable protective net is formed by welding a steel plate frame and a rhombic steel net.
Further, the length of the fixed protective net is 600-680mm, and the width of the fixed protective net is 680-750 mm; the length of the movable protective net is 580-670 mm, the width is 680-750 mm, wherein the length of the movable protective net is smaller than the length of the fixed protective net, and the width is not larger than the width of the fixed protective net.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses it slides about the activity protection network that cup joints on fixed protection network to drive to slide at the flexible section of support stand through the anchor chain to can be according to the lift of support stand and coal rock mass and the height of automatically regulated activity protection network thereupon, and then realize totally closed protection, and the fixed design that the cover can be worn with fixed protection network to activity protection network, firm reliable, impact strength is big, and the protecting effect is good. Additionally, the utility model discloses when coal face uses on the scene, can reduce the danger that the coal petrography body dropped or the departure led to the fact the operation personnel to a certain extent, when adopting the height to change, need not artifical the adjustment, need not change the protection network specification separately, reduced manual work and material cost.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic view of the overall structure of the protective net device of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of a fixed protective screen structure;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic view of a movable guard structure;
fig. 6 is a schematic view of an application scenario of the present invention.
Wherein the reference numerals have the meaning:
1-anchor chain, 2-movable protective net, 3-fixed protective net, 4-working face coal wall, 5-hydraulic support, 6-staff, 7-support upright post, 8-fixed lug hole and 9-L-shaped steel structure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model discloses in aiming at solving colliery production process, when the coal wall appears impacting and collapses out the coal cinder before the working face, can realize the totally closed protection to hydraulic support below operation personnel, the protection network can realize automatic flexible, does not influence the normal continuous use of support.
Fig. 1 is a schematic view of the overall structure of the protective net device of the present invention; FIG. 2 is a top view of FIG. 1; FIG. 3 is a schematic view of a fixed protective screen structure; FIG. 4 is a top view of FIG. 3; FIG. 5 is a schematic view of a movable guard structure;
as shown in fig. 1, 2, 3, 4 and 5, the technical solution of the present invention is as follows:
a mining protective net device comprises a fixed protective net 3, wherein the fixed protective net 3 is arranged between support stand columns 7 close to a coal wall 4 of a working face; the support upright post 7 is telescopic upwards and is used for adapting to top plates with different heights; the mining protective net device also comprises a movable protective net 2 and an anchor chain 1; the movable protective net 2 is sleeved with the fixed protective net 3 in a sliding mode in the vertical direction, the lower end of the anchor chain 1 is fixedly connected with the upper end of the movable protective net 2, and the upper end of the anchor chain 1 is fixedly connected with the telescopic end of the support stand column 7. The support upright post 7 is a hydraulic telescopic upright post. And a fixing ear hole 8 is arranged at the position of the fixed connection between the fixed protective net 3 and the bracket upright post 7. The fixed ear holes 8 are four in total, two on each side, and are fixedly connected with the support upright post 7 through U-shaped bolts. The spacing between the fixing ear holes 8 on each side is 248mm-350 mm. The fixed protective net 3 is formed by welding L-shaped steel structure angle iron 9 and a rhombic steel net, a groove matched with the movable protective net 2 is formed in the fixed protective net 3, and the movable protective net 2 is sleeved in the groove and slides up and down under the action of the support stand column 7. The movable protective net 2 is formed by welding a steel plate frame and a rhombic steel net. The length of the fixed protective net 3 is 600-680mm, and the width is 680-750 mm; the length of the movable protective net 2 is 580mm-670mm, and the width is 680mm-750mm, wherein the length of the movable protective net 2 is smaller than the length of the fixed protective net 3, and the width is not larger than the width of the fixed protective net 3.
Fig. 1 is a schematic view of the overall structure of the protection net device of the present invention, fig. 6 is a schematic view of an application scenario of the present invention, as shown in fig. 1 and fig. 6, in the embodiment of the present invention, the length of the fixed protection net is 640mm, and the width thereof is 750 mm; the distance between the upper part and the lower part of the fixing ear holes at the two sides of the fixed protective net is 300 mm; the length of the movable protective net is 630mm, and the width of the movable protective net is 750 mm.
The support upright column is composed of a mining telescopic hydraulic support upright column, a fixed protective net, a movable protective net and an anchor chain. The fixed protective net is fixed on the telescopic hydraulic support upright post through four U-shaped bolts, and the frame of the fixed protective net is formed by welding L-shaped steel structure angle iron and rhombic steel mesh to form a box-type structure; the movable protective net is formed by welding a steel plate frame and a rhombic steel net. The movable protective net is arranged in a slidable groove which is formed in advance in the fixed protective net from top to bottom, and then is connected with the telescopic end of the hydraulic support pillar through an anchor chain.
When the protective net device works, when the coal mining height is reduced or the stand column of the support falls, the movable protective net automatically slides downwards under the action of self weight. When the coal mining height rises or the support upright posts rise, the movable protective net is automatically drawn out under the traction of the telescopic ends of the supports through anchor chains. The protective screening device can realize automatic stretching along with the lifting of the support stand column, and when the coal wall is impacted to break out coal briquettes in front of the coal briquettes, the support stand column can realize fully-closed automatic protection for operators without influencing the normal continuous use of the support stand column.
The protective screening device can achieve automatic lifting adjustment of the protective device according to lifting of the support, is provided with a special fixing device, is firm and reliable, has high impact strength, can achieve automatic fully-closed protection, and is good in protective effect. The danger of falling or flying coal and rock bodies to operators can be reduced to a certain extent, when the mining height changes, manual adjustment is not needed, the specification of a protective net does not need to be replaced additionally, and the labor cost and the material cost are reduced.
The utility model discloses an adopt the retractable structure, constitute by fixed protection network and flexible protection network two parts, structural design is simple, and is with low costs, the mechanized batch production preparation of being convenient for. The utility model discloses easy and simple to handle in the use, visual scope is unrestricted, has certain reference meaning to the mine that has the rock burst harm.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (8)
1. A mining protective net device comprises a fixed protective net, wherein the fixed protective net is arranged between stand columns of a bracket close to a coal wall of a working face; the stand column of the bracket can extend upwards and is used for adapting to top plates with different heights; the method is characterized in that: the mining protective net device also comprises a movable protective net and an anchor chain; the movable protective net is sleeved with the fixed protective net in a sliding mode in the vertical direction, the lower end of the anchor chain is fixedly connected with the upper end of the movable protective net, and the upper end of the anchor chain is fixedly connected with the telescopic end of the support stand column.
2. The mining protective screening device according to claim 1, characterized in that: the support stand column is a hydraulic telescopic stand column.
3. The mining protective screening device according to claim 2, characterized in that: and a fixed lug hole is arranged at the position of the fixed protective net fixedly connected with the stand column of the bracket.
4. The mining protective screening device of claim 3, characterized in that: the fixed earholes are four in number, two on each side, and are fixedly connected with the support stand columns through U-shaped bolts.
5. The mining protective screening device of claim 4, characterized in that: the spacing between the fixing ear holes on each side is 248mm-350 mm.
6. The mining protective screening device according to claim 1, characterized in that: the fixed protective net is formed by welding L-shaped steel structure angle iron and a rhombic steel mesh, a groove which is matched with the movable protective net in a sliding and sleeving mode is formed in the fixed protective net, the movable protective net is sleeved in the groove, and the support stand column slides up and down under the telescopic effect.
7. The mining protective screening device according to claim 1, characterized in that: the movable protective net is formed by welding a steel plate frame and a rhombic steel mesh.
8. The mining protective screening device according to claim 1, characterized in that: the length of the fixed protective net is 600-680mm, and the width of the fixed protective net is 680-750 mm; the length of the movable protective net is 580-670 mm, the width is 680-750 mm, wherein the length of the movable protective net is smaller than the length of the fixed protective net, and the width is not larger than the width of the fixed protective net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020860016.0U CN212154802U (en) | 2020-05-20 | 2020-05-20 | Mining protective net device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020860016.0U CN212154802U (en) | 2020-05-20 | 2020-05-20 | Mining protective net device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212154802U true CN212154802U (en) | 2020-12-15 |
Family
ID=73706419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020860016.0U Expired - Fee Related CN212154802U (en) | 2020-05-20 | 2020-05-20 | Mining protective net device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212154802U (en) |
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2020
- 2020-05-20 CN CN202020860016.0U patent/CN212154802U/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: 20201215 |
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| CF01 | Termination of patent right due to non-payment of annual fee |