CN216714433U - Underground coal mine roadway driving face advance support - Google Patents
Underground coal mine roadway driving face advance support Download PDFInfo
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- CN216714433U CN216714433U CN202122539004.5U CN202122539004U CN216714433U CN 216714433 U CN216714433 U CN 216714433U CN 202122539004 U CN202122539004 U CN 202122539004U CN 216714433 U CN216714433 U CN 216714433U
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Abstract
The utility model discloses an underground coal mine roadway driving face forepoling, which comprises a front support, a rear support and a pushing assembly which can longitudinally move in a telescopic manner, wherein the front support and the rear support are respectively arranged at the front end and the rear end of the pushing assembly through a lifting mechanism, and the rear support assists the front support to support a roadway top plate; the front bracket comprises two front upright posts arranged on two sides of the coal roadway, and the lower ends of the front upright posts are telescopic ends; the rear support comprises two rear upright columns arranged on two sides of the coal roadway, and the lower ends of the rear upright columns are telescopic ends. The front upright post and the rear upright post are alternately lifted and matched with the extension and retraction of the pushing assembly to realize the forward movement in the roadway and the support of the tunneling surface. The utility model effectively solves the problems of low efficiency, unreliable support and great threat to life safety of front-line miners when the temporary advancing cantilever beam is used for supporting the top plate of the existing excavation roadway, and improves the efficiency and safety of coal mining in China.
Description
Technical Field
The utility model belongs to the technical field of underground coal safety mining, and particularly relates to an underground coal mine roadway heading face advance support.
Background
At present, most of the energy in China still comes from coal, and the coal is not available in the industries such as chemical industry, electric power, smelting and the like. Therefore, how to ensure the efficient and safe exploitation of coal is very important. The mechanical mining degree of underground coal reaches more than 80%, the mechanical tunneling degree reaches more than 95%, the temporary advance support of the tunneling working face is still a weak link, most mines adopt a front canopy to temporarily manage the tunnel roof with the exposed rear ankles, although the forms are various, the working efficiency is low, potential safety hazards exist, and the effect is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an underground coal mine roadway driving face advance support, which realizes advancing in a roadway and supporting of a driving face by means of alternate lifting of a front upright post and a rear upright post and matching with extension and retraction of a pushing telescopic rod, and further solves the problems of low efficiency and unreliable supporting of a driving roadway top plate by means of a temporary advance cantilever.
The utility model is realized by the following steps:
the underground coal mine roadway driving face forepoling comprises a front support, a rear support and a pushing assembly capable of longitudinally stretching, wherein the front support and the rear support are respectively arranged at the front end and the rear end of the pushing assembly through a lifting mechanism, the front support is used for supporting a roadway top plate of a coal roadway, and the rear support assists the front support to support the roadway top plate; the lower ends of the front support and the rear support are telescopic supports.
Preferably, the front support comprises two front uprights arranged on two sides of the coal roadway, the two front uprights are arranged at the front end of the pushing assembly through detachable front upright sleeves, the front uprights are lifted by opening and clamping the front upright sleeves, and the lower ends of the front uprights are telescopic ends.
Preferably, the rear support comprises two rear upright columns arranged on two sides of the coal roadway, the two rear upright columns are arranged at the rear end of the pushing assembly through detachable rear column sleeves, the rear upright columns are lifted by opening and clamping the rear column sleeves, and the lower ends of the rear upright columns are telescopic ends.
Preferably, the front support further comprises front auxiliary jacks and a support top beam for supporting a roadway top plate of the coal roadway, the two front auxiliary jacks are respectively fixed on the front column sleeve through mounting clamping sleeves, and the support top beam is fixed at the tops of the two front auxiliary jacks and can provide auxiliary support for the roadway top plate of the coal roadway.
Preferably, the rear support further comprises rear auxiliary jacks and a rear connecting beam, the two rear auxiliary jacks are respectively fixed on the rear column sleeves through mounting clamping sleeves, and the rear connecting beam is fixed at the tops of the two rear auxiliary jacks and provides auxiliary support for roadway roofs of the coal roadway.
Preferably, the pushing assembly comprises an inner sliding beam, an outer sliding sleeve and a telescopic device, the inner sliding beam can be nested in the outer sliding sleeve in a front-back sliding mode, the front upright post and the rear upright post are respectively installed at the end parts of the inner sliding beam and the outer sliding sleeve through corresponding post sleeves, and the telescopic device is installed between the inner sliding beam and the outer sliding sleeve and used for driving the inner sliding beam and the outer sliding sleeve to move front and back relatively.
Preferably, the telescopic device is a hydraulic rod or an electric push rod.
The utility model has the beneficial effects that: the underground coal mine roadway driving face advance support provided by the utility model can effectively improve the supporting efficiency and supporting reliability of the existing roadway driving top face and ensure more efficient and safer mining of a first-line miner.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic overall structural diagram of an underground coal mine roadway heading face forepoling according to an embodiment of the present invention;
fig. 2 is a working flow chart of the advance support of the underground coal mine roadway heading face advancing in the roadway according to the embodiment of the utility model.
In the figure: 1-front upright post, 2-front auxiliary jack, 3-rear upright post, 4-rear auxiliary jack, 5-outer sliding sleeve, 6-expansion device, 7-support top beam, 8-inner sliding beam, 9-rear column sleeve, 10-front column sleeve, 11-rear connecting beam, 12-installation jacket and 13-roadway bottom plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the utility model provides an underground coal mine roadway driving face forepoling, which comprises a front support, a rear support and a pushing assembly capable of longitudinally stretching, wherein the front support and the rear support are respectively arranged at the front end and the rear end of the pushing assembly through a lifting mechanism, so that the front support and the rear support jointly form a support frame for a roadway; the lower ends of the front support and the rear support are telescopic supports. Specifically, the method comprises the following steps:
as shown in fig. 1, the front support faces the heading direction of the roadway, the front support comprises two front uprights 1 and two support top beams 7, the two front uprights 1 are symmetrically arranged at two sides of the roadway, the support top beams 7 are mounted at the tops of the two front uprights 1 and are used for supporting a roadway top plate (not shown in the figure) of the coal roadway, the length of the support top beams 7 is equivalent to the width of a roadway bottom plate 13, the rear support comprises a pair of rear uprights 3, the rear uprights 3 and the front uprights 1 have the same structure and are telescopic uprights, specifically, a telescopic rod with adjustable length is adopted, and the lower end of the telescopic rod is a telescopic end, so that the front support and the rear support are telescopic supports; the upper parts of the front upright post 1 and the rear upright post 3 are respectively detachably provided with a front column sleeve 10 and a rear column sleeve 9, the front column sleeve 10 and the rear column sleeve 9 are sleeves matched with the telescopic rod, so that the telescopic rod can slide up and down along the sleeves to a certain extent, the sleeves are also provided with locking mechanisms (for example, the sleeves can be locked by adopting puller bolts or designed into a hoop structure), and the relative heights of the telescopic rod and the sleeves can be adjusted by opening and clamping the sleeves; when the underground coal mine roadway excavation face needs to be supported, the front upright post 1 is lifted, the lower end of the front upright post is extended, so that the bottom of the front upright post 1 is supported on the roadway bottom plate 13, the support top beam 7 at the top is supported on the excavation face at the top of the roadway to support the roadway top plate, and the extended rear upright post 3 and the rear connecting beam 11 play a role in auxiliary support.
As shown in fig. 1, the front pillar 1 and the rear pillar 3 are connected by a sliding assembly, and specifically, the pushing assembly comprises an inner sliding beam 8, an outer sliding sleeve 5 and a telescopic device 6, one end of the inner sliding beam 8 is vertically fixed on the outer wall of a front column sleeve 10 on the front upright column 1, the other end of the inner sliding beam is nested in the outer sliding sleeve 5, and can slide back and forth along the outer sliding sleeve 5, the other end of the outer sliding sleeve 5 is vertically fixed on a rear column sleeve 9 on the rear upright post 3, the telescopic device 6 is arranged between the inner sliding beam 8 and the outer sliding sleeve 5, two ends of the telescopic device are respectively and fixedly connected with free ends of the inner sliding beam 8 and the outer sliding sleeve 5, and the telescopic device 6 is specifically a hydraulic rod or an electric push rod and is used for driving the inner sliding beam 8 and the outer sliding sleeve 5 to move back and forth relatively; when needs are when advancing in the colliery tunnel in the pit, through control the front column 1 with back column 3's the lift in turn and cooperation pass the flexible of telescopic link to realize the antedisplacement of whole device in the tunnel. It is worth mentioning that, get rid of interior sliding beam 8 and outer sliding sleeve 5, directly with front column 1 with back stand 3 links to each other through telescoping device 6 and also can drive the forepoling and move forward in the tunnel, and this embodiment is only as an optimal embodiment, through setting up interior sliding beam 8 and outer sliding sleeve 5, can effectively reduce the bending stress that telescoping device 6 bore at the during operation to improve the structural strength of whole device.
As shown in fig. 1, in the embodiment of the present invention, in order to ensure the stability of the underground coal mine roadway driving face forepoling provided in this embodiment when moving forward in a roadway, the underground coal mine roadway driving face forepoling further includes a front auxiliary jack 2 and a rear auxiliary jack 4, both the front auxiliary jack 2 and the rear auxiliary jack 4 are vertically installed to assist the front upright post 1 and the rear upright post 3 in supporting a roadway driving face, wherein the front auxiliary jack 2 is fixed on the front upright post sleeve 10 through an installation jacket 12, and a telescopic end of the front auxiliary jack is connected with the support top beam 7; the rear auxiliary jacks 4 are fixed on the rear column sleeve 9 through mounting jackets 12, and the telescopic ends of the two rear auxiliary jacks 4 are connected through a rear connecting beam 11.
When the roadway driving face needs to be supported in an auxiliary mode, the auxiliary jack can be lifted, and the rear connecting beam 11 and the support top beam 7 are enabled to be supported on the roadway top plate; when it is desired to advance in the roadway, for example: when the rear upright post 3 is supported, the front upright post 1 descends and the lower end of the front upright post is contracted, and the front auxiliary jack 2 is contracted, the bottom of the front upright post is kept suspended away from the ground, so that moment with the rear upright post 3 as a fulcrum can be generated, the whole underground coal mine roadway driving face advance support has the overturning risk, at the moment, the rear auxiliary jack 4 is extended, the rear connecting beam 11 on the rear auxiliary jack is supported on the top surface of the roadway driving face, a group of downward supporting reaction force can be provided for the pushing assembly, the pushing assembly is converted into an extending beam structure from a cantilever beam structure, the stability of the front upright post 1 in the back-and-forth moving process is improved, and the transition inclination and the shaking of the front upright post in the front moving process are effectively prevented.
As shown in fig. 2, the concrete working steps of the advance support of the underground coal mine roadway heading face advancing in the roadway provided by the utility model are as follows:
step 1: as shown in fig. 2(a), during normal supporting, the front upright 1, the rear upright 3, the front auxiliary jack 2, and the rear auxiliary jack 4 are all in an extended state and at the highest point, so that the support top beam 7 effectively supports the roadway driving surface.
And 2, step: as shown in fig. 2(b), when the front movement is needed, the rear column 3 needs to be retracted first, so that the lower end of the rear column 3 is suspended, then the rear auxiliary jack 4 is retracted, and the rear column 3 is lowered by loosening the rear column sleeve 9, so as to separate from the support for the roadway roof, so that the tops of the rear auxiliary jack 4 and the rear column 3 are no longer in contact with the roadway roof, and the lower end of the rear column 3 is suspended, so that the front auxiliary jack 2 can be slightly jacked up, and the rear column 3 is prevented from tilting backwards.
And step 3: as shown in fig. 2(c), the telescopic device 6 is controlled to extend and contract, so that the rear upright 3 and the rear auxiliary jack 4 move forward for a certain distance.
And 4, step 4: as shown in fig. 2(d), the relative height between the rear pillar 3 and the rear pillar brace 9 is raised and fixed, the lower end of the rear pillar 3 is lowered so that the lower end of the rear pillar 3 lands, and the rear auxiliary jack 4 is raised so that the rear connecting beam 11 is supported on the roadway roof.
And 5: as shown in fig. 2(e), the front pillar 1 is contracted to suspend the lower end of the front pillar 1, then the front auxiliary jack 2 is contracted and the front pillar 1 is lowered by loosening the front pillar sleeve 12, so that the tops of the front pillar 1 and the front auxiliary jack 2 are separated from the support of the roadway roof, the lower end of the front pillar 1 is suspended, and the height of the rear auxiliary jack 4 can be further adjusted to prevent the front pillar 1 from tilting forward.
Step 6: as shown in fig. 2(f), the extension device 6 is controlled to extend to push the front upright post 1 and the front auxiliary jack 2 to move forward for a certain distance;
and 7, as shown in fig. 2(a), lifting the front upright post 1 and the front auxiliary jack 2 to support the top surface of the roadway driving surface, then lowering the lower end of the front upright post 1 to support the bottom surface of the roadway to complete normal support of the roadway, and repeating the steps 2 to 7 if the front upright post needs to be moved again, so that the front upright post can be gradually moved forwards in the underground coal mine roadway.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides a colliery tunnel heading face fore-stock in pit which characterized in that: the coal roadway pushing device comprises a front support, a rear support and a pushing assembly which moves in a longitudinal telescopic mode, wherein the front support and the rear support are respectively installed at the front end and the rear end of the pushing assembly through a lifting mechanism, the front support is used for supporting a roadway top plate of a coal roadway, and the rear support assists the front support to support the roadway top plate; the lower ends of the front bracket and the rear bracket are telescopic brackets;
the front support comprises two front uprights arranged on two sides of the coal roadway, the two front uprights are arranged at the front end of the pushing assembly through detachable front upright sleeves, the front uprights are lifted by opening and clamping the front upright sleeves, and the lower ends of the front uprights are telescopic ends.
2. The underground coal mine roadway heading face forepoling of claim 1, wherein: the rear support comprises two rear upright columns arranged on two sides of the coal roadway, the two rear upright columns are arranged at the rear end of the pushing assembly through detachable rear column sleeves, the rear upright columns are lifted by opening and clamping the rear column sleeves, and the lower ends of the rear upright columns are telescopic ends.
3. The underground coal mine roadway heading face forepoling of claim 2, wherein: the front support further comprises front auxiliary jacks and a support top beam used for supporting a roadway top plate of the coal roadway, the two front auxiliary jacks are fixed on the front column sleeve respectively through mounting clamping sleeves, and the support top beam is fixed at the tops of the two front auxiliary jacks and can provide auxiliary support for the roadway top plate of the coal roadway.
4. The underground coal mine roadway heading face forepoling of claim 3, wherein: the rear support further comprises rear auxiliary jacks and a rear connecting beam, the two rear auxiliary jacks are fixed on the rear column sleeves through mounting clamping sleeves respectively, and the rear connecting beam is fixed at the tops of the two rear auxiliary jacks and provides auxiliary support for roadway roofs of the coal roadways.
5. The underground coal mine roadway heading face forepoling of claim 4, wherein: the pushing assembly comprises an inner sliding beam, an outer sliding sleeve and a telescopic device, the inner sliding beam can be embedded in the outer sliding sleeve in a front-back sliding mode, the front stand column and the rear stand column are installed at the end portions of the inner sliding beam and the outer sliding sleeve respectively through corresponding column sleeves, and the telescopic device is installed between the inner sliding beam and the outer sliding sleeve and used for driving the inner sliding beam and the outer sliding sleeve to move front and back relatively.
6. The underground coal mine roadway heading face forepoling of claim 5, wherein: the telescopic device is a hydraulic rod or an electric push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122539004.5U CN216714433U (en) | 2021-10-21 | 2021-10-21 | Underground coal mine roadway driving face advance support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122539004.5U CN216714433U (en) | 2021-10-21 | 2021-10-21 | Underground coal mine roadway driving face advance support |
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| Publication Number | Publication Date |
|---|---|
| CN216714433U true CN216714433U (en) | 2022-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122539004.5U Active CN216714433U (en) | 2021-10-21 | 2021-10-21 | Underground coal mine roadway driving face advance support |
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| Country | Link |
|---|---|
| CN (1) | CN216714433U (en) |
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2021
- 2021-10-21 CN CN202122539004.5U patent/CN216714433U/en active Active
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