CN111779520B - Lower end hydraulic support for steeply inclined roadway and use method - Google Patents
Lower end hydraulic support for steeply inclined roadway and use method Download PDFInfo
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- CN111779520B CN111779520B CN202010661249.2A CN202010661249A CN111779520B CN 111779520 B CN111779520 B CN 111779520B CN 202010661249 A CN202010661249 A CN 202010661249A CN 111779520 B CN111779520 B CN 111779520B
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims description 68
- 239000003245 coal Substances 0.000 abstract description 22
- 238000005065 mining Methods 0.000 abstract description 5
- 239000011435 rock Substances 0.000 abstract description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
- E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/0082—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor specially adapted for vertical or steep gradient seams
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/03—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor having protective means, e.g. shields, for preventing or impeding entry of loose material into the working space or support
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a lower end hydraulic support for a steeply inclined roadway and a use method thereof, wherein the lower end hydraulic support comprises a first support and a second support which are both positioned at an outlet at the bottom of the steeply inclined roadway, the first support comprises an end support and a sliding runway, the end support and the sliding runway are arranged in a front-back abutting mode, the sliding runway is close to the outlet at the bottom of the steeply inclined roadway, the second support comprises a front support and a rear support, the front support and the rear support are arranged in a front-back abutting mode, the end support and the front support are mutually arranged in a side-by-side abutting mode, and the sliding runway and the rear support are mutually arranged in a side-by-side abutting mode. The invention is positioned at the steep road junction and is used for supporting the top surface of the steep road junction, preventing the top surface from collapsing or falling rocks at the place, and ensuring the safety of personnel in and out or coal mining.
Description
Technical Field
The invention relates to the technical field of coal mining, in particular to a lower end hydraulic support for a steeply inclined roadway and a using method thereof.
Background
And when the inclination angle of the coal seam roadway is greater than or equal to 45 degrees, the coal seam is a steep coal seam. Because the dip angle of the steep coal seam is too big, traditional hydraulic support structural style has decided that the steep coal seam working face hydraulic support is in static side direction unstable, the vertically unbalanced state of developments all the time under normal operating condition, once workman's misoperation falls the frame too much, hydraulic support loses the effective support of below hydraulic support, the hydraulic support that moves will take place to empty immediately, take place to bite the frame between light then and the below hydraulic support, the heavy then hydraulic support that moves takes place to fall the frame, directly initiate and fall the roof accident, normally steep coal seam generally appears in the tunnel, the steep coal seam appears in straight tunnel promptly, consequently along this coal seam, need excavate a coal mining tunnel, this coal mining tunnel is the steep tunnel, place hydraulic support side by side in the steep coal tunnel, these support supports are used for supporting the tunnel top, prevent that the top from taking place to collapse, and whole row of support's head and afterbody are located the steep tunnel entry and exit, especially exit, because the hydraulic support in the steep coal tunnel stacks side by side, whole focus and weight need have a support base support, and slope exit position are very important, this place and roof or collapse accident take place, this place in the tunnel that the steep coal seam is general in the tunnel, the slope support can take place in the steep coal seam can be firmly and the tunnel can take place, the steep coal seam support, the slope tunnel can be firmly and the slope, and the coal seam can be firmly support with the steep coal seam is mutually inclined.
Disclosure of Invention
The invention provides a lower end hydraulic support for a steeply inclined roadway, which is positioned at the top surface of the steeply inclined roadway and used for supporting the top surface of the steeply inclined roadway, preventing the top surface from collapsing or falling rocks at the position and ensuring the safety of personnel in and out or coal mining.
The technical scheme of the invention is that the lower end hydraulic support for the steeply inclined roadway comprises a first support and a second support which are both positioned at an outlet at the bottom of the steeply inclined roadway, wherein the first support comprises an end support and a sliding runway, the end support and the sliding runway are arranged in a front-back abutting mode, the sliding runway is close to the outlet at the bottom of the steeply inclined roadway, the second support comprises a front support and a rear support, the front support and the rear support are arranged in a front-back abutting mode, the end support and the front support are mutually arranged in a side-by-side abutting mode, and the sliding runway and the rear support are mutually arranged in a side-by-side abutting mode;
The end support comprises a first base, a first support beam, a first oil cylinder and a first connecting rod mechanism, wherein the first support beam is fixed above the first base through the first oil cylinder, one end of the first oil cylinder is hinged to the first base, the other end of the first oil cylinder is hinged to the first support beam, the first support beam stretches out and draws back through the first oil cylinder to realize lifting action, the first connecting rod mechanism is positioned between the first base and the first support beam, the first connecting rod mechanism comprises a first rack and a first connecting rod, the first rack is fixed on the first base, the first connecting rod is fixed on the first support beam, and the first support beam stretches out and draws back through the first connecting rod mechanism and the first oil cylinder to realize lifting action and angle fine adjustment action;
The sliding runway comprises a supporting slide plate, a jacking cylinder and an auxiliary connecting rod mechanism, wherein the supporting slide plate is of a plate-shaped structure or a frame structure, the jacking cylinder and the auxiliary connecting rod mechanism are connected between one side, close to the rear frame, of the supporting slide plate and the first base, the other side of the supporting slide plate is hinged with the first base, and the supporting slide plate is driven by the jacking cylinder to stretch out and draw back with the auxiliary connecting rod mechanism so as to realize lifting action on one side of the supporting slide plate;
The front frame comprises a second base, a second supporting beam, a second oil cylinder and a second connecting rod mechanism, wherein the second supporting beam is fixed above the second base through the second oil cylinder, one end of the second oil cylinder is hinged to the second base, the other end of the second oil cylinder is hinged to the second supporting beam, the second connecting rod mechanism is positioned between the second supporting beam and the second base, one end of the second connecting rod mechanism is fixed on the second base, the other end of the second connecting rod mechanism is hinged to the second supporting beam, and the second supporting beam stretches out and draws back through the second oil cylinder and the second connecting rod mechanism to realize lifting action;
The rear frame comprises a third base, a third supporting beam, a third oil cylinder and a third connecting rod mechanism, wherein the third supporting beam is fixed above the third base through the third oil cylinder, one end of the third oil cylinder is hinged to the third base, the other end of the third oil cylinder is hinged to the third supporting beam, the third supporting beam stretches out and draws back through the third oil cylinder to realize lifting action, the front end of the third supporting beam is hinged to a front cantilever beam, the third connecting rod mechanism is located between the front cantilever beam and the second base, one end of the third connecting rod mechanism is fixed on the third base, the other end of the third connecting rod mechanism is hinged to the bottom of the front cantilever beam, and the front cantilever beam swings through the third connecting rod mechanism to realize lifting action.
Preferably, the support slide is hinged with the first base through a support column, i.e. one end of the support column is fixed on the first base, and the other end is hinged with the support slide.
Preferably, the first base, the second base and the third base are all of split type structures, and the bases on the left side and the right side are connected through front and rear bridge to form split type bridge structures.
Preferably, the end parts of the first support beam and the second support beam, which face the sliding runway, extend out of the shield beams, a pushing cylinder is arranged between the shield beams on the second support beam and the second base, one end of the pushing cylinder is fixed on the second base, and the other end of the pushing cylinder is fixed on the bottom of the shield beams.
Preferably, the number of the first oil cylinders, the second oil cylinders and the third oil cylinders is four, and the first oil cylinders, the second oil cylinders and the third oil cylinders are respectively fixed at four corners of the corresponding base.
Preferably, the number of the jacking cylinders is two, and the jacking cylinders are inclined towards the direction of the rear frame at the same time.
Based on the hydraulic support structure, the invention also provides a using method of the lower end hydraulic support, which comprises the following steps:
the method comprises the steps that firstly, a first support is placed in a roadway and close to a steep opening, the end part of a sliding runway of the first support is close to the steep opening, a first supporting beam of an end support is driven to ascend through a first oil cylinder, and after the first support is placed in place, a supporting sliding plate is driven to adjust an angle to align with a supporting support in the steep roadway through a jacking oil cylinder;
placing the rear frame in the roadway close to the steep opening, placing the rear frame and the sliding runway side by side, and tightly propping the front cantilever against the inner end surface of the roadway, wherein the front cantilever can be adjusted according to actual working conditions to be in an open or folded state, then placing the front frame tightly propping the rear frame, so that the head of the front frame tightly props against the tail of the rear frame, and swinging the front cantilever of the rear frame through a third connecting rod mechanism to adjust the distance between the rear frame and the inner end surface of the roadway;
and thirdly, lifting all the supporting beams through the oil cylinders and tightly supporting the top surface of the roadway.
According to the invention, three supports are arranged in a roadway at the exit of the steeply inclined roadway in a combined way, the supporting beams are driven by the oil cylinders to lift, so that the supporting beams are tightly abutted against the top surface of the roadway, and the sliding runway is directly abutted against the last support of the hydraulic support supports in the steeply inclined roadway, namely the support of the lower end, so that the support of the lower end is prevented from dislocation or sliding, the sliding runway can be adjusted in angle, thus being suitable for different steeply inclined roadways, providing a safe operation area, simultaneously providing a safe passage for workers, ensuring that the base of the sliding runway is directly contacted with the ground in the roadway, ensuring that the supports are not inclined or slid, and being particularly suitable for the stacked working condition of a plurality of hydraulic support supports in the steeply inclined roadway, so that all the hydraulic support supports in the steeply inclined roadway are balanced and stable;
The end part of the front frame is provided with a shield beam with an adjustable swing angle, so that a shield is formed between the front frame and the rear frame and is used for blocking broken stones falling from a steeply inclined roadway, the swing angle action of the shield beam is realized by driving an independent jacking cylinder, and the supporting strength of the shield beam is ensured;
the three brackets of the invention have simple structure and convenient installation and placement.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is an overall exploded view of the present invention.
1, A first bracket; 11. an end bracket; 111. a first base; 112. a first support beam; 113. a first cylinder; 114. a first link mechanism; 12. sliding the runway; 121. a support slide plate; 122. jacking the oil cylinder; 123. an auxiliary link mechanism; 2. a second bracket; 21. a front frame; 211. a second base; 212. a second support beam; 213. a second cylinder; 214. a second link mechanism; 22. a rear frame; 221. a third base; 222. a third support beam; 223. a third cylinder; 224. a third link mechanism; 225. a front cantilever; 3. a shield beam; 4. and (5) pushing the oil cylinder.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the first embodiment, as shown in fig. 1 and 2, the structure of the present invention includes a first bracket 1 and a second bracket 2, both of which are located at the exit of the bottom of a steeply inclined roadway.
The first bracket 1 comprises an end bracket 11 and a sliding runway 12, the end bracket 11 and the sliding runway 12 are arranged in a front-back abutting mode, and the sliding runway 12 is close to an outlet at the bottom of the steeply inclined roadway.
The end bracket 11 comprises a first base 111, a first supporting beam 112, a first oil cylinder 113 and a first connecting rod mechanism 114, wherein the first supporting beam 112 is fixed above the first base 111 through the first oil cylinder 113, one end of the first oil cylinder 113 is hinged or fixed on the first base 111, the other end of the first oil cylinder 113 is hinged on the first supporting beam 112, the first supporting beam 112 stretches and contracts through the first oil cylinder 113 to realize lifting action, the first connecting rod mechanism 114 is positioned between the first base 111 and the first supporting beam 112, the first connecting rod mechanism 114 comprises a first rack and a first connecting rod, the first rack is fixed on the first base 111, the first connecting rod is fixed on the first supporting beam 112, and the first connecting rod mechanism 114 assists the first supporting beam 112 to perform lifting action and angle fine adjustment action;
The sliding runway 12 comprises a supporting slide plate 121, a jacking cylinder 122 and an auxiliary link mechanism 123, wherein the supporting slide plate 121 is of a plate-shaped structure or a frame structure, the jacking cylinder 122 and the auxiliary link mechanism 123 are connected between one side of the supporting slide plate 121 close to the rear frame 22 and the first base 111, the other side of the supporting slide plate 121 is hinged with the first base 111, and the jacking cylinder 122 drives the auxiliary link mechanism 123 to stretch and retract so as to realize lifting action on one side of the supporting slide plate;
the number of the jacking cylinders 122 is more than four, the jacking cylinders 122 are uniformly distributed between the supporting slide plate 121 and the first base 111 at equal intervals, the specific positions can be the middle position or the periphery of the first base 111, one end of each jacking cylinder 122 is hinged to the supporting slide plate 121, the other end of each jacking cylinder 122 is fixed to the first base 111, the jacking cylinders 122 can lift simultaneously, or lift in a separated mode, namely, the cylinders on the same side lift simultaneously, and the cylinders on the other side lift correspondingly, so that the two sides of the supporting slide plate 121 are in a high-low state, and a certain angle is integrally formed relative to the first base 111, and the supporting slide plate 121 is conveniently aligned with a steep roadway.
The second bracket 2 comprises a front bracket 21 and a rear bracket 22, the front bracket 21 and the rear bracket 22 are arranged in a front-back abutting mode, the end bracket 11 and the front bracket 21 are arranged in a side-by-side abutting mode, and the sliding runway 12 and the rear bracket 22 are arranged in a side-by-side abutting mode.
The front frame 21 comprises a second base 211, a second supporting beam 212, a second oil cylinder 213 and a second link mechanism 214, wherein the second supporting beam 212 is fixed above the second base 211 through the second oil cylinder 213, one end of the second oil cylinder 213 is hinged to the second base 211, the other end of the second oil cylinder 213 is hinged to the second supporting beam 212, the second link mechanism 214 is positioned between the second supporting beam 212 and the second base 211, one end of the second link mechanism 214 is fixed on the second base 211, the other end of the second link mechanism 214 is hinged to the second supporting beam 212, and the second supporting beam 212 stretches and contracts through the second oil cylinder 213 and the second link mechanism 214 to realize lifting motion.
The rear frame 22 comprises a third base 221, a third supporting beam 222, a third oil cylinder 223 and a third link mechanism 224, wherein the third supporting beam 222 is fixed above the third base 221 through the third oil cylinder 223, one end of the third oil cylinder 223 is hinged to the third base 221, the other end of the third oil cylinder 223 is hinged to the third supporting beam 222, the third supporting beam 222 stretches and contracts through the third oil cylinder 223 to realize lifting action, the front end of the third supporting beam 222 is hinged to a front cantilever 225, the third link mechanism 224 is positioned between the front cantilever 225 and the second base 211, one end of the third link mechanism 224 is fixed on the third base 221, the other end of the third link mechanism 224 is hinged to the bottom of the front cantilever 225, and the front cantilever 225 swings through the third link mechanism 224 to realize lifting action.
In this embodiment, the number of the first oil cylinders 113, the second oil cylinders 213 and the third oil cylinders 223 is four, and the first oil cylinders, the second oil cylinders 213 and the third oil cylinders 223 are respectively fixed at four corners of the corresponding base, the bottoms of the oil cylinders are fixed on the base, the telescopic ends are hinged to the bottom surfaces of the supporting beams, and the telescopic ends are matched with the connecting rod mechanisms, so that each supporting beam can have a certain sliding buffer when being tightly abutted against the top surface of a roadway, and the supporting beams are prevented from being hard stuck in the lifting process.
In this embodiment, the first link mechanism 114, the second link mechanism 214, the third link mechanism 224 and the auxiliary link mechanism 123 are four-bar mechanisms, the frame of which is fixed on the base, and the crank is fixed on the support beam, so that the gravity of the support beam and the component force of the support beam along the inclined direction can be effectively overcome, and the stress condition of the support can be improved. When the supporting beam moves in a large range (such as direct top-falling and primary pressing or periodic pressing of the working surface) on the working surface of the coal seam in the steeply inclined roadway, the component force of the supporting beam along the trend direction is far greater than that along the trend direction, and the four-bar mechanism is vertically connected with the base of the bracket and the supporting beam, so that the overall stability of the bracket can be effectively improved, and the torsion resistance of the whole bracket is enhanced. It should be noted that, in order to ensure lateral stability of each support, the width of the support is designed to be 1.75m so as to adapt to the situation when the inclination angle of the coal seam reaches 85 degrees, meanwhile, a sufficient space is reserved for the vertically arranged four-bar linkage mechanism when each support beam is lifted, and the four-bar linkage mechanism cannot protrude out of the box-type base in the normal support height range of the support beam.
In addition, the form of the four-bar linkage mechanism can be further optimized, and the four-bar linkage frame and the base of the bracket are connected into a whole or extend from the base, so that the integral strength of the bracket is improved, and the self weight of the bracket is reduced.
In the second embodiment, the supporting slide plate 121 is hinged to the first base 111 through a supporting column, that is, one end of the supporting column is fixed to the first base 111, and the other end of the supporting column is hinged to the supporting slide plate, and supporting columns with different heights are adopted according to different practical working conditions, so that the stability of the sliding runway 12 is improved, and the supporting slide plate 121 can swing flexibly for different angles to adapt to steep inclined roadways with different angles. The rest is the same as the first embodiment.
In the third embodiment, the first base 111 is divided into two parts, one part is the base of the end bracket 11, the other part is used for fixing the sliding runway 12, a telescopic oil cylinder is arranged between the two parts of bases, the oil cylinders are respectively fixed on the two parts of bases, and the distance between the two parts of bases is adjusted by the telescopic action of the oil cylinders, so that the distance between the end bracket 11 and the sliding runway 12 can be adjusted more flexibly. The rest is the same as the first embodiment.
Frame box type bases can be additionally arranged on the first base 111, the second base 211 and the third base 221, namely, a frame box type base is sleeved on each base, so that a pedestrian passageway can be additionally arranged in each base, devices such as an isolation net and an escalator are fixed on a base frame through welding so as to allow personnel to come in and go out, broken stones or sundries are prevented from falling into the passageway, and the personnel are ensured to come in and go out safely.
The frame box type base adopts a steel welding piece, so that stability and torsion resistance are guaranteed.
The first base 111, the second base 211 and the third base 221 adopt split type bridge structures, namely, the bases adopt two parallel bottom plates, bridge connection is realized between the two bottom plates through connecting blocks, the connecting blocks have a certain height, and when the oil cylinders on the bases shrink to the limit, the connecting blocks have the function of supporting the supporting beams, so that the supporting beams are prevented from collapsing or deforming.
Based on the structure, the invention also provides a method for applying the lower end hydraulic support for the steeply inclined roadway in the roadway, which comprises the following specific steps:
Firstly, placing a first bracket 1 in a roadway through external auxiliary equipment, wherein the first bracket is close to a steep inclined outlet, the end part of a sliding runway 12 of the first bracket 1 is close to the steep inclined outlet, a first supporting beam 112 of an end bracket 11 is driven to ascend through a first oil cylinder 113, the first supporting beam 112 is propped against the top surface of the roadway, after the first bracket 1 is placed in place, a supporting slide plate 121 is driven by a jacking oil cylinder 122 to adjust an angle, and finally the first bracket is aligned to the steep inclined roadway outlet, and because the length of a first base 111 is longer, the corresponding supporting slide plate 121 is longer, the position of the first bracket 1 can be aligned to the steep inclined roadway outlet without excessive adjustment, and the first bracket 1 can still stably bear the supporting bracket when the supporting bracket in the steep inclined roadway is prevented from being deviated;
Placing the rear frame 22 in the roadway close to the steep opening, placing the rear frame and the sliding runway 12 side by side, and tightly abutting the front cantilever 225 against the inner end surface of the roadway, wherein the front cantilever 225 can be adjusted according to actual working conditions, so that the front frame 21 is in an opened or folded state, then placing the front frame 21 closely following the rear frame 22, so that the head of the front frame 21 is tightly abutted against the tail of the rear frame 22, and swinging the front cantilever 225 of the rear frame 22 through a third link mechanism 224 to adjust the distance between the rear frame 22 and the inner end surface of the roadway, for example, under the condition that the steep roadway length is longer, the number of supporting brackets in the steep incline is more, the sliding runway 12 for bearing the first supporting bracket is required to be further stable and bearing strength, the distance between the rear frame 22 and the inner end surface of the roadway is generally reduced, the front frame 21 is correspondingly closer to the inner end surface of the roadway, and the bases of the front frame 21 and the rear frame 22 are tightly abutted against the base of the sliding runway 12 side by side, so that the stability and bearing performance of the sliding runway 12 are increased;
and thirdly, all supporting beams are lifted up through the oil cylinders and tightly abutted against the top surface of the roadway, and finally the supporting brackets are placed in the steeply inclined roadway in a stacking mode through external auxiliary equipment, so that the supporting sliding plate 121 tightly abutted against the first supporting bracket, and therefore the whole row of supporting brackets in the steeply inclined roadway are prevented from sliding when being stacked mutually, and finally the top surface in the roadway is prevented from collapsing.
And finally, when the support bracket is withdrawn from the roadway entrance, the support bracket in the steeply inclined roadway is withdrawn from the roadway exit, and the front frame 21, the rear frame 22 and the first bracket 1 are withdrawn from the roadway exit, so that the support bracket and the first bracket can be carried out simultaneously or sequentially, and the support bracket is very convenient and simple.
Here, the shield beam 3 extending from the first support beam 112 can just cover the neutral position between the first support beam 112 and the steeply inclined roadway mouth of the second support beam 212, while the shield beam 3 on the second support beam 212 of the front frame 21 just can block the neutral position between the second support beam 212 and the third support beam 222, and can effectively block sundries such as broken stones falling from the steeply inclined roadway, and the shield beam 3 can realize lifting and swinging through the pushing cylinder 4 corresponding to the shield beam 3.
The present invention is not limited to the above embodiments, and the specific structure thereof is allowed to be changed, and all changes made within the scope of the invention as independently claimed are within the scope of the invention.
Claims (7)
1. The lower end hydraulic support for the steeply inclined roadway is characterized by comprising a first support and a second support which are both positioned at the outlet of the bottom of the steeply inclined roadway, wherein the first support comprises an end support and a sliding runway, the end support and the sliding runway are arranged in a front-back abutting mode, the sliding runway is close to the outlet of the bottom of the steeply inclined roadway, the second support comprises a front frame and a rear frame, the front frame and the rear frame are arranged in a front-back abutting mode, the end support and the front frame are arranged in a side-by-side abutting mode, and the sliding runway and the rear frame are arranged in a side-by-side abutting mode;
The end support comprises a first base, a first support beam, a first oil cylinder and a first connecting rod mechanism, wherein the first support beam is fixed above the first base through the first oil cylinder, one end of the first oil cylinder is hinged to the first base, the other end of the first oil cylinder is hinged to the first support beam, the first support beam stretches out and draws back through the first oil cylinder to realize lifting action, the first connecting rod mechanism is positioned between the first base and the first support beam, the first connecting rod mechanism comprises a first rack and a first connecting rod, the first rack is fixed on the first base, the first connecting rod is fixed on the first support beam, and the first support beam stretches out and draws back through the first connecting rod mechanism and the first oil cylinder to realize lifting action and angle fine adjustment action;
The sliding runway comprises a supporting slide plate, a jacking cylinder and an auxiliary connecting rod mechanism, wherein the supporting slide plate is of a plate-shaped structure or a frame structure, the jacking cylinder and the auxiliary connecting rod mechanism are connected between one side, close to the rear frame, of the supporting slide plate and the first base, the other side of the supporting slide plate is hinged with the first base, and the supporting slide plate is driven by the jacking cylinder to stretch out and draw back with the auxiliary connecting rod mechanism so as to realize lifting action on one side of the supporting slide plate;
The front frame comprises a second base, a second supporting beam, a second oil cylinder and a second connecting rod mechanism, wherein the second supporting beam is fixed above the second base through the second oil cylinder, one end of the second oil cylinder is hinged to the second base, the other end of the second oil cylinder is hinged to the second supporting beam, the second connecting rod mechanism is positioned between the second supporting beam and the second base, one end of the second connecting rod mechanism is fixed on the second base, the other end of the second connecting rod mechanism is hinged to the second supporting beam, and the second supporting beam stretches out and draws back through the second oil cylinder and the second connecting rod mechanism to realize lifting action;
The rear frame comprises a third base, a third supporting beam, a third oil cylinder and a third connecting rod mechanism, wherein the third supporting beam is fixed above the third base through the third oil cylinder, one end of the third oil cylinder is hinged to the third base, the other end of the third oil cylinder is hinged to the third supporting beam, the third supporting beam stretches out and draws back through the third oil cylinder to realize lifting action, the front end of the third supporting beam is hinged to a front cantilever beam, the third connecting rod mechanism is located between the front cantilever beam and the second base, one end of the third connecting rod mechanism is fixed on the third base, the other end of the third connecting rod mechanism is hinged to the bottom of the front cantilever beam, and the front cantilever beam swings through the third connecting rod mechanism to realize lifting action.
2. The lower head hydraulic support for a steeply inclined roadway of claim 1, wherein: the support slide plate is hinged with the first base through a support column, namely one end of the support column is fixed on the first base, and the other end of the support column is hinged with the support slide plate.
3. The lower head hydraulic support for a steeply inclined roadway of claim 1, wherein: the first base, the second base and the third base are all split structures, and the bases on the left side and the right side are connected through front and back bridge passing to form a split bridge passing structure.
4. The lower head hydraulic support for a steeply inclined roadway of claim 1, wherein: the first support beam and the second support beam extend out of the shield beam towards the end part of the sliding runway, a pushing cylinder is arranged between the shield beam and the second base on the second support beam, one end of the pushing cylinder is fixed on the second base, and the other end of the pushing cylinder is fixed on the bottom of the shield beam.
5. The lower head hydraulic support for a steeply inclined roadway of claim 1, wherein: the number of the first oil cylinders, the second oil cylinders and the third oil cylinders is four, and the first oil cylinders, the second oil cylinders and the third oil cylinders are respectively fixed at four corners of the corresponding base.
6. The lower head hydraulic support for a steeply inclined roadway of claim 1, wherein: the number of the jacking cylinders is two, and the jacking cylinders incline towards the direction of the rear frame at the same time.
7. A method for using the lower end hydraulic support for a steeply inclined roadway based on any one of claims 1 to 6, which is characterized in that: it comprises the following steps:
the method comprises the steps that firstly, a first support is placed in a roadway and close to a steep opening, the end part of a sliding runway of the first support is close to the steep opening, a first supporting beam of an end support is driven to ascend through a first oil cylinder, and after the first support is placed in place, a supporting sliding plate is driven to adjust an angle to align with a supporting support in the steep roadway through a jacking oil cylinder;
placing the rear frame in the roadway close to the steep opening, placing the rear frame and the sliding runway side by side, and tightly propping the front cantilever against the inner end surface of the roadway, wherein the front cantilever can be adjusted according to actual working conditions to be in an open or folded state, then placing the front frame tightly propping the rear frame, so that the head of the front frame tightly props against the tail of the rear frame, and swinging the front cantilever of the rear frame through a third connecting rod mechanism to adjust the distance between the rear frame and the inner end surface of the roadway;
and thirdly, lifting all the supporting beams through the oil cylinders and tightly supporting the top surface of the roadway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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