A hydraulic support for supporting mining working face

Abstract

The present invention discloses a hydraulic support for supporting a mining working face, comprising a base, a telescopic member, a mounting seat, a top plate, a first side plate, a second side plate, and a connecting assembly. The telescopic member is provided on the base and is telescopically movable in the vertical direction. The mounting seat is provided on the telescopic member. The top plate is provided on the mounting seat and is spaced apart from the mounting seat in the vertical direction. The first side plate and the second side plate are spaced apart relative to each other in the width direction of the mounting seat and are respectively provided on both sides of the mounting seat. The first side plate and the second side plate are rotatable in the horizontal and vertical positions about the length direction of the mounting seat. The connecting assembly is passed through the mounting seat and is movable in the vertical direction relative to the mounting seat. The upper end of the connecting assembly is connected to the top plate, and the lower end of the connecting assembly is connected to the first side plate and the second side plate. The hydraulic support for supporting a mining working face of the present invention has the advantages of simple structure and high safety performance.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mining, in particular to a hydraulic support for supporting a mining working face. Background Art

[0002] Hydraulic supports can reliably and effectively support and control the roof of the working face, isolate the goaf, prevent gangue from entering the mining face and advancing the conveyor. It is used in conjunction with the coal mining machine to realize comprehensive mechanization of coal mining, solve the contradiction that roof management lags behind coal mining work in mechanized coal mining, further improve and enhance the efficiency of coal mining and transportation equipment, reduce the labor intensity of coal miners, and maximize the protection of the lives of coal miners.

[0003] In related technologies, during the mining process, coordination and cooperation between supports is difficult, resulting in excessive distance between adjacent hydraulic supports on the working faces. Roof leakage will produce gangue, and the falling gangue may injure working personnel and threaten the safety of the workers. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention provides a hydraulic support for supporting a mining working face with high safety performance and good protection performance.

[0006] The mining working face support hydraulic support according to an embodiment of the present invention comprises: a base; a telescopic member, the telescopic member is provided on the base and can be telescopically moved in the up and down directions; a mounting seat, the mounting seat is provided on the telescopic member so that the telescopic member drives the mounting seat to be movable in the up and down directions; a top plate, the top plate is provided on the mounting seat and is spaced apart from the mounting seat in the up and down directions, the top plate is used to protect the goaf; a first side plate and a second side plate, the first side plate and the second side plate are spaced apart and relatively arranged along the width direction of the mounting seat and the first side plate and the second side plate are respectively provided on both sides of the mounting seat, the first side plate and the second side plate are rotatable in the horizontal position and the vertical position around the length direction of the mounting seat; A connecting assembly, which is passed through the mounting seat and is movable in the up and down directions relative to the mounting seat. The upper end of the connecting assembly is connected to the top plate, and the lower end of the connecting assembly is connected to the first side plate and the second side plate. The hydraulic support has a first working state and a second working state. In the first working state, when the telescopic member is extended to drive the top plate to resist the goaf, the top plate drives the connecting assembly to move downward to drive the first side plate and the second side plate to rotate to a horizontal position. In the second working state, the telescopic member is shortened to drive the top plate to separate from the goaf, and the connecting assembly moves upward to drive the first side plate and the second side plate to rotate to a vertical position.

[0007] The hydraulic support for supporting the mining working face in the embodiment of the present invention is provided with a top plate, a connecting assembly, a first side plate and a second side plate. The top plate can be in contact with the goaf in the tunnel for support, thereby reducing the occurrence of loose and broken coal seams and roof gangue leakage. The connecting assembly, the first side plate and the second side plate can increase the support area between two adjacent hydraulic supports, reduce the gap between adjacent supports, and reduce the risk of personal injury to workers under the hydraulic support due to falling roof plates and gangue leakage.

[0008] In some embodiments, the mining working face support hydraulic support also includes a third side plate, which is arranged at one end of the mounting seat and can be rotated relative to the mounting seat around the width direction of the mounting seat in the horizontal position and the vertical position, so that when the top plate is against the goaf, the third side plate rotates to the horizontal position.

[0009] In some embodiments, the mining working face support hydraulic support also includes a support rod, which is passed through the mounting seat and can be moved in the up and down directions relative to the mounting seat; a sleeve, which is provided on the mounting seat and the support rod is passed through the sleeve, and the support rod can be moved in the up and down directions relative to the sleeve; a first elastic member, which is provided between the sleeve and the top plate and the two ends of the first elastic member are respectively connected to the sleeve and the top plate, and the first elastic member is passed through the support rod, and the first elastic member has an elastic force to drive the top plate. In the first working state, the top plate is resisted against the goaf to move the top plate downward, so that the top plate drives the first elastic member to compress, and in the second working state, the top plate is separated from the goaf, so that the first elastic member drives the top plate to move upward.

[0010] The cam is secured to the bottom of the housing and is adapted to engage with the bottom of the housing so that the cam can be engaged with the bottom of the housing to engage with the bottom of the housing. The cam is secured to the bottom of the second support member and is adapted to engage with the lower support member when the cam is engaged with the lower support member.

[0011] In some embodiments, a first mating portion is provided at the upper end of the sliding rod, and a second mating portion is provided at the lower end surface of the top plate. One of the first mating portion and the second mating portion is a sphere, and the other of the first mating portion and the second mating portion is a ball seat. The first mating portion and the second mating portion can be rotatably mated.

[0012] In some embodiments, the connecting assembly also includes a transmission member disposed in the shell, the transmission member including a first gear, a second gear, a rotating shaft and a first rack, the rotating shaft extends along the length direction of the mounting seat and is rotatably disposed in the shell, the first gear and the second gear are both passed through the rotating shaft and are spaced relative to each other along the width direction of the mounting seat, the first rack extends in the up and down directions and is engaged with the first gear, the first rack is connected to the connecting member, and a second rack is provided at the lower end of the sliding rod, and the second gear is engaged with the second rack, so that the connecting member and the sliding rod are connected through the transmission member.

[0013] In some embodiments, the connecting assembly further comprises a limiting rod disposed in the shell, the limiting rod extending in the up-down direction and connected to the shell, the connecting member being passed through the limiting rod and movable in the up-down direction relative to the limiting rod.

[0014] In some embodiments, the connecting member is provided with a first slide groove and a second slide groove extending in the up and down directions, the first slide groove and the second slide groove are arranged opposite to each other along the width direction of the mounting seat, the first slide groove extends from top to bottom and is inclined from the inside of the connecting member toward the outside of the connecting member, the second slide groove extends from top to bottom and is inclined from the inside of the connecting member toward the outside of the connecting member, one end of the first support rod is arranged in the first slide groove and slides in the first slide groove along the extension direction of the first slide groove, and one end of the second support rod is arranged in the second slide groove and slides in the second slide groove along the extension direction of the second slide groove.

[0015] In some embodiments, a mounting cavity is provided in the base, and the hydraulic support further comprises: a driving member extending in the up-down direction and the upper end of the driving member being provided at the lower end of the mounting seat and connected to the mounting seat so that the mounting seat drives the driving member to move in the up-down direction, and the lower end of the driving member is passed through the base and is located in the mounting cavity; a first rod and a second rod, the first rod and the second rod being spaced apart along the length direction of the mounting seat, the first rod and the second rod being rotatably provided in the mounting cavity around the width direction of the mounting seat and both cooperating with the lower end of the driving member, and in the first working state, the mounting seat The driving member drives the driving member to move upward, and the driving member drives the first rod and the second rod to be retracted into the mounting cavity. In the second working state, the mounting seat drives the driving member to move downward, and the driving member drives the other end of the first rod and the other end of the second rod to extend out of the mounting cavity and the first rod and the second rod are supported on the ground; the first rotating wheel and the second rotating wheel, the first rotating wheel and the second rotating wheel are rotatably provided on the other end of the first rod and the other end of the second rod respectively, so that in the second working state, the first rotating wheel and the second rotating wheel are supported on the ground by the first rod and the second rod respectively.

[0016] and a gear engaged with the third gear and engaged with the third gear. The tensioning force is so that when the third rack moves downward, the first connecting rope is wrapped around the third gear, and the third gear drives the threaded rod to rotate forward through the first connecting rope; a slide, the slide is passed through the threaded rod and is threadedly engaged with the threaded rod so that the slide can move on the threaded rod along the extension direction of the threaded rod; a second connecting rope, one end of the second connecting rope is arranged on the slide, and the other end of the second connecting rope is arranged on the first rod and the second rod, and the second connecting rope has a second tensioning force to pull the first rod and the second rod to rotate; a second elastic member, the second elastic member is arranged on the threaded rod and the two ends of the second elastic member are respectively connected to the threaded rod and the base, and the second elastic member has an elastic force to drive the threaded rod to reverse. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a hydraulic support for supporting a mining working face according to an embodiment of the present invention.

[0018] Figure 2 It is a top view of a hydraulic support for supporting a mining working face according to an embodiment of the present invention.

[0019] Figure 3 It is a structural schematic diagram of the connection assembly of the mining working face support hydraulic support according to an embodiment of the present invention.

[0020] Figure 4 It is a schematic diagram of the installation of the top plate of the hydraulic support for supporting the mining working face according to an embodiment of the present invention.

[0021] Figure 5 It is a structural schematic diagram of the base of the mining working face support hydraulic support according to an embodiment of the present invention.

[0022] Figure 6 It is a top view of the base of the hydraulic support for supporting a mining working face according to an embodiment of the present invention.

[0023] Mining face support hydraulic support 100;

[0024] Base 1; first shell 101; second shell 102;

[0025] Telescopic member 2;

[0026] Mounting seat 3;

[0027] Top plate 4; second matching portion 41;

[0028] First side panel 5; second side panel 6; third side panel 8;

[0029] Connecting assembly 7; housing 71; slide rod 72; first mating portion 721; connecting member 73; first slide groove 731; first support rod 74; second support rod 75; transmission member 76; first gear 761; second gear 762; second rack 763; first rack 764; limiting rod 77;

[0030] Support rod 9; sleeve 10; first elastic member 11;

[0031] Driving member 12; third gear 122; first connecting rope 123; threaded rod 124; slide 125; second connecting rope 126; first rod 13; second rod 14; first rotating wheel 15; second rotating wheel 16; clamp 17; fixing sleeve 18; fourth gear 19; mounting rod 20. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0033] The following describes a mining face support hydraulic support 100 according to an embodiment of the present invention with reference to the accompanying drawings.

[0034] like Figure 1-6 As shown, the mining working face support hydraulic support 100 according to an embodiment of the present invention includes a base 1, a telescopic member 2, a mounting seat 3, a top plate 4, a first side plate 5, a second side plate 6 and a connecting assembly 7.

[0035] The telescopic member 2 is provided on the base 1 and can be telescopically moved in the up and down directions. Figure 1-2 As shown, the telescopic member 2 is a hydraulic cylinder, the base 1 is the supporting foundation of the entire hydraulic support 100, the base of the telescopic member 2 is fixedly mounted on the base 1, and the telescopic member 2 telescopically moves in the up and down directions.

[0036] The mounting seat 3 is provided on the telescopic member 2 so that the telescopic member 2 drives the mounting seat 3 to move in the up and down directions. Figure 1-2As shown, the mounting seat 3 has a top surface and a side surface, and the upper end of the telescopic member 2 is fixed to the top surface of the mounting seat 3, so that the telescopic member 2 drives the mounting seat 3 to move up and down.

[0037] The top plate 4 is provided on the mounting base 3 and is spaced apart from the mounting base 3 in the vertical direction. The top plate 4 is used to protect the goaf. Figure 1 As shown, the top plate 4 is arranged above the top surface of the mounting seat 3 and is spaced apart from the top surface of the mounting seat 3. The telescopic member 2 can drive the top plate 4 to move upward through the mounting seat 3 so that the top plate 4 is against the goaf, so that the top plate 4 protects the goaf.

[0038] The first side plate 5 and the second side plate 6 are arranged along the width direction of the mounting base 3 (eg Figure 1 The left and right directions shown in the figure) are spaced apart and the first side plate 5 and the second side plate 6 are respectively arranged on both sides of the mounting base 3, and the first side plate 5 and the second side plate 6 are arranged around the length direction of the mounting base 3 (as shown in the figure) Figure 1 The front and rear directions shown in FIG. 3 are rotatable in the horizontal position and the vertical position. Figure 1-2 As shown, the first side plate 5 is rotatably disposed on the left side of the mounting base 3 , and the second side plate 6 is rotatably disposed on the right side of the mounting base 3 .

[0039] The connecting component 7 is provided on the mounting base 3 and is movable in the up and down directions relative to the mounting base 3. The upper end of the connecting component 7 is connected to the top plate 4, and the lower end of the connecting component 7 is connected to the first side plate 5 and the second side plate 6. Specifically, Figure 1-2 As shown, the connecting component 7 is passed through the mounting base 3, the upper end of the connecting component 7 is fixed on the top plate 4, and the lower end of the connecting component 7 cooperates with the first side plate 5 and the second side plate 6 to drive the first side plate 5 and the second side plate 6 to rotate between the vertical position and the horizontal position.

[0040] The hydraulic support 100 has a first working state and a second working state. In the first working state, the telescopic member 2 extends to drive the top plate 4 to abut against the goaf, and the top plate 4 drives the connecting assembly 7 to move downward to drive the first side plate 5 and the second side plate 6 to rotate to a horizontal position. In the second working state, the telescopic member 2 shortens to drive the top plate 4 to separate from the goaf, and the connecting assembly 7 moves upward to drive the first side plate 5 and the second side plate 6 to rotate to a vertical position. Specifically, Figure 1-2As shown, in the first working state, the telescopic member 2 extends to drive the mounting seat 3 and the top plate 4 to move upward. When the top plate 4 contacts the goaf, the telescopic member 2 continues to extend. Since the top plate 4 is in contact with the goaf, the mounting seat 3 cannot drive the connecting assembly 7 to move upward. The connecting assembly 7 will move relative to the mounting seat 3, so that the top plate 4 moves downward relative to the mounting seat 3 to drive the connecting assembly 7 to move downward. The connecting assembly 7 drives the first side plate 5 and the second side plate 6 to rotate to a horizontal position, so that the first side plate 5 and the second side plate 6 are supported between two adjacent hydraulic supports 100 to increase the support area of ​​the hydraulic support 100. In the second working state, the telescopic member 2 shortens and drives the top plate 4 to move downward. When the top plate 4 is separated from the goaf, the connecting assembly 7 moves upward, thereby driving the first side plate 5 and the second side plate 6 to rotate to a vertical position to retract the hydraulic support 100.

[0041] The mining working face support hydraulic support 100 of the embodiment of the present invention is provided with a top plate 4, a telescopic member 2, a connecting assembly 7, a first side plate 5 and a second side plate 6. When the top plate 4 contacts the goaf for support, the connecting assembly 7 will automatically drive the first side plate 5 and the second side plate 6 to extend to support the gap between adjacent hydraulic supports 100, thereby increasing the support area, reducing the difficulty of coordination between adjacent hydraulic supports 100 and the occurrence of gangue leakage from the loose and broken coal seam top plate 4, preventing the falling gangue from possibly injuring the working personnel, and ensuring the safety of the personnel. In addition, the combination of the telescopic member 2 and the connecting assembly 7 allows the telescopic movement of the telescopic member 2 to synchronously drive the top plate 4, the first side plate 5 and the second side plate 6 to support the goaf. There is no need to set driving members and monitoring members for the first side plate 5 and the second side plate 6, thereby reducing the processing and manufacturing cost of the mining working face support hydraulic support 100.

[0042] In some embodiments, the mining face support hydraulic support 100 further includes a third side plate 8, which is provided at one end of the mounting base 3 and is rotatable relative to the mounting base 3 in a horizontal position and a vertical position around the width direction of the mounting base 3, so that when the roof 4 abuts against the goaf, the third side plate 8 rotates to a horizontal position. Specifically, Figure 1-2 As shown, the third side plate 8 is rotatably provided at the front end of the mounting seat 3. In the first working state, the third side plate 8 is in a horizontal position to support the top surface of the tunnel. In the second working state, the third side plate 8 is rotated to a vertical position so that the third side plate 8 is retracted.

[0043] In some embodiments, the mining working face support hydraulic support 100 also includes a hydraulic cylinder, which can perform telescopic movement in the forward and backward directions. The rear end of the hydraulic cylinder is fixed on the side of the mounting seat 3, and the front end of the hydraulic cylinder is hinged to the bottom of the third side plate 8. Thus, the third side plate 8 is driven by the hydraulic cylinder to rotate in the vertical and horizontal directions.

[0044] In some embodiments, the mining face support hydraulic support 100 further includes a support rod 9 , a sleeve 10 and a first elastic member 11 .

[0045] The support rod 9 is provided on the mounting base 3 and can move in the up and down directions relative to the mounting base 3. Specifically, Figure 1 and 2 As shown, there are multiple support rods 9, all of which are vertical rods and are arranged at intervals along the circumference of the top plate 4. The upper ends of the support rods 9 are fixedly connected to the top plate 4, and the lower ends of the support rods 9 are passed through the mounting seat 3 and move in the up and down directions on the mounting seat 3.

[0046] The sleeve 10 is provided on the mounting seat 3 and the support rod 9 is passed through the sleeve 10. The support rod 9 is movable in the up and down directions relative to the sleeve 10. Specifically, Figure 4 As shown, the sleeve 10 is fixedly mounted on the top surface of the mounting seat 3 and the lower end of the support rod 9 passes through the sleeve 10 and the mounting seat 3 and can move in the up and down directions.

[0047] The first elastic member 11 is provided between the sleeve 10 and the top plate 4, and the two ends of the first elastic member 11 are connected to the sleeve 10 and the top plate 4 respectively. The first elastic member 11 is passed through the support rod 9. The first elastic member 11 has an elastic force to drive the top plate 4. In the first working state, the top plate 4 is against the goaf to move the top plate 4 downward, so that the top plate 4 drives the first elastic member 11 to compress. In the second working state, the top plate 4 is separated from the goaf, so that the first elastic member 11 drives the top plate 4 to move upward. Specifically, as Figure 1 and Figure 4 As shown, the first elastic member 11 is a compression spring. The first elastic member 11 is passed through the support rod 9. The lower end of the first elastic member 11 is fixed on the sleeve 10. The upper end of the first elastic member 11 is fixed on the top plate 4. In the first working state, the first elastic member 11 is in a compressed state to drive the top plate 4 to move upward. In the second working state, due to the extension and contraction of the telescopic member 2, the top plate 4 is driven to move downward, and the first elastic member 11 drives the top plate 4 to move upward, thereby driving the connecting assembly 7 to move upward.

[0048] In some embodiments, the connecting assembly 7 includes a housing 71 , a sliding rod 72 , a connecting member 73 , a first supporting rod 74 , and a second supporting rod 75 .

[0049] The housing 71 is provided at the lower end of the mounting base 3 and is connected to the mounting base 3. Specifically, Figure 1 and Figure 3 As shown, the housing 71 is generally rectangular and is fixed to the lower end of the mounting base 3 .

[0050] The slide bar 72 extends in the up-down direction and the upper end of the slide bar 72 is connected to the top plate 4, and the lower end of the slide bar 72 is inserted into the housing 71. Figure 3As shown, the slide rod 72 is a vertical rod extending in the up and down directions. The slide rod 72 is located below the top plate 4 and the upper end of the slide rod is connected to the top plate 4. The lower end of the slide rod 72 is inserted into the shell 71.

[0051] The connecting member 73 is disposed in the housing 71 and cooperates with the slide bar 72 so that when the slide bar 72 moves downward, the connecting member 73 moves upward, or when the slide bar 72 moves upward, the connecting member 73 moves downward. Figure 3 As shown, the connecting member 73 can be a trapezoidal block and cooperate with the slide rod 72. When the top plate 4 drives the slide rod 72 to move downward, the slide rod 72 can drive the connecting member 73 to move upward. When the top plate 4 drives the slide rod 72 to move upward, the slide rod 72 can drive the connecting member 73 to move downward.

[0052] The first support rod 74 and the second support rod 75 are spaced apart and arranged opposite to each other along the width direction of the mounting seat 3. One end of the first support rod 74 is passed through the shell 71 and cooperates with the connecting piece 73. The other end of the first support rod 74 passes through the outside of the shell 71 and abuts against the lower end surface of the first side plate 5. One end of the second support rod 75 is passed through the shell 71 and cooperates with the connecting piece 73. The other end of the second support rod 75 passes through the outside of the shell 71 and abuts against the lower end surface of the second side plate 6. In the first working state, the telescopic member 2 drives the top plate 4 to abut against the goaf, and the sliding rod 72 It moves downward to drive the connecting member 73 to move upward, and the connecting member 73 drives the first support rod 74 and the second support rod 75 to move in the direction away from the mounting seat 3, so that the first side plate 5 and the second side plate 6 are in a horizontal position. In the second working state, the telescopic member 2 drives the top plate 4 to separate from the goaf, and the top plate 4 can drive the sliding rod 72 to move upward to drive the connecting member 73 to move downward, and the connecting member 73 drives the first support rod 74 and the second support rod 75 to move in the direction adjacent to the mounting seat 3, so that the first side plate 5 and the second side plate 6 are in a vertical position.

[0053] Specifically, if Figure 3 As shown, the first support rod 74 and the second support rod 75 are arranged on the left and right sides of the shell 71 along the left and right directions, one end of the first support rod 74 and one end of the second support rod 75 are both passed through the shell 71 and cooperate with the connecting piece 73, the other end of the first support rod 74 and the other end of the second support rod 75 both extend out of the shell 71, and the other end of the first support rod 74 is against the first side plate 5, and the other end of the second support rod 75 is against the second side plate 6. Therefore, in the first working state, the first support rod 74 and the second support rod 75 respectively drive the first side plate 5 and the second side plate 6 to rotate to a horizontal state, and in the second working state, the first support rod 74 and the second support rod 75 respectively drive the first side plate 5 and the second side plate 6 to rotate to a vertical state.

[0054] In some embodiments, the upper end of the slide rod 72 is provided with a first matching portion 721, and the lower end surface of the top plate 4 is provided with a second matching portion 41. One of the first matching portion 721 and the second matching portion 41 is a sphere, and the other of the first matching portion 721 and the second matching portion 41 is a ball seat. The first matching portion 721 and the second matching portion 41 are rotatably matched. Specifically, as Figure 4 As shown, the sliding rod 72 is a vertical rod and the lower end of the support rod 9 is passed through the mounting seat 3 and moves up and down on the mounting seat 3. The setting of the first matching part 721 and the second matching part 41 can be set according to actual conditions. For example: the first matching part 721 can be a sphere, the second matching part 41 is a ball seat, or the first matching part 721 is a ball seat, and the second matching part 41 is a sphere. Thus, through the cooperation of the first matching part 721 and the second matching part 41, after the top plate 4 contacts and supports the goaf, the sphere rotates in the ball seat according to the slope of the goaf, thereby improving the adaptability of the top plate 4.

[0055] It should be noted that the sleeve 10 and the first elastic member 11 can also be installed on the sliding rod 72, thereby improving the stability of the support of the top plate 4.

[0056] In some embodiments, the connecting assembly 7 further includes a transmission member 76 disposed in the housing 71, the transmission member 76 including a first gear 761, a second gear 762, a rotating shaft (not shown in the figure) and a first rack 764, the rotating shaft extending along the length direction of the mounting seat 3 and rotatably disposed in the housing 71, the first gear 761 and the second gear 762 are both passed through the rotating shaft and spaced relative to each other along the width direction of the mounting seat 3, the first rack 764 extends in the up-down direction and meshes with the first gear 761, the first rack 764 is connected to the connecting member 73, the lower end of the slide rod 72 is provided with a second rack 763, the second gear 762 meshes with the second rack 763, so that the connecting member 73 and the slide rod 72 are connected through the transmission member 76. Specifically, as Figure 1As shown, the rotating shaft is a horizontal shaft and extends in the front-to-back direction. The first gear 761 and the second gear 762 are spaced apart on the rotating shaft in the front-to-back direction, so that the first gear 761 and the second gear 762 rotate synchronously through the rotating shaft. The lower end of the first rack 764 is fixed on the connecting member 73, and the upper end of the first rack 764 is engaged with the first gear 761. The second rack 763 is formed at the lower end of the slide bar 72, and the second rack 763 is engaged with the second gear 762. In the first working state, the telescopic member 2 drives the top plate 4 to move upward. When the top plate 4 is in contact with the goaf, When they are in contact with each other, the telescopic member 2 continues to move, and the top plate 4 moves downward relative to the mounting base 3 to drive the slide rod 72 to move downward, and the second rack 763 and the second gear 762 engage to drive the second gear 762 to rotate clockwise, and the second gear 762 drives the first gear 761 to rotate clockwise through the rotating shaft, and the first gear 761 drives the first rack 764 to move upward, thereby driving the connecting member 73 to move upward, thereby causing the first support rod 74 and the second support rod 75 to move outward to drive the first side plate 5 and the second side plate 6 to be in a horizontal state.

[0057] In the second working state, the telescopic member 2 drives the top plate 4 to move downward. When the pressure between the top plate 4 and the tunnel top gradually decreases, the telescopic member 2 continues to move, and the top plate 4 moves upward relative to the mounting seat 3 under the action of the first elastic member 11, so as to drive the slide rod 72 to move upward. The second rack 763 and the second gear 762 engage to drive the second gear 762 to rotate counterclockwise. The second gear 762 drives the first gear 761 to rotate counterclockwise through the rotating shaft. The first gear 761 drives the first rack 764 to move downward, thereby driving the connecting member 73 to move downward, thereby making the first support rod 74 and the second support rod 75 move inward to drive the first side plate 5 and the second side plate 6 to be in a vertical state.

[0058] In some embodiments, the connecting assembly 7 further includes a limiting rod 77 disposed in the housing 71, the limiting rod 77 extending in the vertical direction and connected to the housing 71, and the connecting member 73 passing through the limiting rod 77 and movable in the vertical direction relative to the limiting rod 77. Specifically, Figure 3 As shown, the limit rod 77 is a sliding rod 72 extending in the up and down directions. The limit rod 77 is arranged in the shell 71 and the upper and lower ends are respectively connected to the shell 71. The connecting member 73 is passed through the limit rod 77, thereby ensuring the stability of the connecting member 73 moving in the up and down directions through the limit rod 77.

[0059] In some embodiments, the connecting member 73 is provided with a first slide groove 731 and a second slide groove (not shown in the figure) extending in the up-down direction. The first slide groove 731 and the second slide groove are arranged opposite to each other along the width direction of the mounting seat 3. The first slide groove 731 extends from top to bottom and is inclined from the inside of the connecting member 73 toward the outside of the connecting member 73. The second slide groove extends from top to bottom and is inclined from the inside of the connecting member 73 toward the outside of the connecting member 73. One end of the first support rod 74 is arranged in the first slide groove 731 and slides in the first slide groove 731 along the extension direction of the first slide groove 731. One end of the second support rod 75 is arranged in the second slide groove and slides in the second slide groove along the extension direction of the second slide groove. Specifically, as Figure 3 As shown, the left and right surfaces of the connecting member 73 are provided with a first slide groove 731 and a second slide groove. The first slide groove 731 is provided on the left end surface of the connecting member 73, and the second slide groove is provided on the right end surface of the connecting member 73. The first slide groove 731 extends from top to bottom and is inclined from right to left, and the second slide groove extends from top to bottom and is inclined from left to right. The right end of the first support rod 74 is inserted into the first slide groove 731 and can be moved in the first slide groove 731 and in the extension direction of the first slide groove 731. The left end of the second support rod 75 is inserted into the second slide groove and can be moved in the second slide groove and in the extension direction of the second slide groove. Therefore, when the connecting member 73 moves up and down, the first slide groove 731 can push the first support rod 74 to move in the left and right direction, and the second slide groove can push the second support rod 75 to move in the left and right direction.

[0060] In some embodiments, sliders can be set at the left end of the first support rod 74 and the right end of the second support rod 75. The slider of the first support rod 74 is set in the first sliding groove 731, and the slider of the second support rod 75 is set in the second support rod 75, thereby ensuring the sliding stability of the first support rod 74 and the second support rod 75.

[0061] In some embodiments, a mounting cavity is provided in the base 1 , and the hydraulic support 100 further includes a driving member 12 , a first rod 13 , a second rod 14 , a first rotating wheel 15 and a second rotating wheel 16 .

[0062] The driving member 12 extends in the vertical direction and the upper end of the driving member 12 is arranged at the lower end of the mounting seat 3 and connected to the mounting seat 3, so that the mounting seat 3 drives the driving member 12 to move in the vertical direction. The lower end of the driving member 12 is arranged in the mounting cavity of the base 1. Specifically, Figure 5-6 As shown, the driving member 12 is a vertical rod extending up and down. The upper end of the driving member 12 is fixed to the lower end surface of the mounting seat 3. When the telescopic member 2 telescopes, it can drive the driving member 12 to move in the up and down directions. The lower end of the driving member 12 is inserted into the base 1.

[0063] The first rod 13 and the second rod 14 are spaced apart along the length direction of the mounting seat 3. The first rod 13 and the second rod 14 are rotatably arranged in the mounting cavity around the width direction of the mounting seat 3 and are both matched with the lower end of the driving member 12. In the first working state, the mounting seat 3 drives the driving member 12 to move upward, and the driving member 12 drives the first rod 13 and the second rod 14 to be stored in the mounting cavity. In the second working state, the mounting seat 3 drives the driving member 12 to move downward, and the driving member 12 drives the other end of the first rod 13 and the other end of the second rod 14 to extend out of the mounting cavity and the first rod 13 and the second rod 14 are supported on the ground. Specifically, as Figure 5-6 As shown, the first rod 13 and the second rod 14 are both horizontal rods and are spaced apart in the front-to-back direction. One end of the first rod 13 and one end of the second rod 14 are both matched with the lower end of the driving member 12. In the first working state, the telescopic member 2 is extended, and the first driving member 12 moves upward, so that the first rod 13 and the second rod 14 are rotated into the mounting cavity of the base 1. In the second working state, the other end of the first rod 13 and the other end of the second rod 14 extend out of the mounting cavity, so that the other end of the first rod 13 and the other end of the second rod 14 are supported on the ground, and the lower end surface of the base 1 is spaced apart from the ground.

[0064] The first rotating wheel 15 and the second rotating wheel 16 are rotatably mounted on the other end of the first rod 13 and the other end of the second rod 14, respectively, so that in the second working state, the first rotating wheel 15 and the second rotating wheel 16 are supported on the ground by the first rod 13 and the second rod 14, respectively. Figure 5-6 As shown, the first rotating wheel 15 and the second rotating wheel 16 are rotatably provided on the other end of the first rod 13 and the other end of the second rod 14 respectively. In the first working state, the first rotating wheel 15 and the second rotating wheel 16 are respectively received in the installation cavity along with the first rod 13 and the second rod 14. In the second working state, the first rotating wheel 15 and the second rotating wheel 16 are against the ground, thereby facilitating the movement of the hydraulic support 100.

[0065] The driving member 12 includes a third rack (not shown in the figure), a third gear 122, a first connecting rope 123, a threaded rod 124, a sliding seat 125, a second connecting rope 126 and a second elastic member (not shown in the figure).

[0066] The third rack is arranged below the mounting base 3 and is connected to the mounting base 3. The lower end of the third rack is passed through the base 1. Specifically, Figure 5-6 As shown, the third rack extends in the up-down direction and the upper end of the third rack is fixed to the lower end of the mounting seat 3 , and the lower end of the third rack is inserted into the mounting cavity of the base 1 .

[0067] The third gear 122 is rotatably disposed in the mounting cavity, and the third rack is engaged with the third gear 122 so that when the connecting member 73 moves up and down, the third rack drives the third gear 122 to rotate. Figure 5-6 As shown, the third gear 122 is rotatably disposed in the mounting cavity. When the telescopic member 2 moves along the telescopic direction, it can drive the third gear 122 to move up and down. The third rack and the third gear 122 are engaged to drive the third gear 122 to rotate.

[0068] One end of the first connecting rope 123 is wound around the third gear 122, so that when the third gear 122 rotates, the first connecting rope 123 is wound around the third gear 122. Figure 5-6 As shown, the upper end of the first connecting rope 123 is wrapped around the third gear 122. When the third gear 122 rotates forward, the first connecting rope 123 can be wrapped around the third gear 122. When the third gear 122 rotates reversely, the first connecting rope 123 can be loosened from the third gear 122.

[0069] The threaded rod 124 extends along the width direction of the mounting seat 3 and is rotatably arranged in the mounting cavity. The other end of the first connecting rope 123 is wound around one end of the threaded rod 124. The first connecting rope 123 has a first tensioning force that pulls the threaded rod 124 to rotate. When the third rack moves downward, the first connecting rope 123 is wound around the third gear 122, and the third gear 122 drives the threaded rod 124 to rotate forward through the first connecting rope 123. Specifically, Figure 5-6 As shown, the threaded rod 124 extends in the left and right directions and is rotatably arranged in the installation cavity. The lower end of the connecting rope is wrapped around the threaded rod 124, and the first connecting rope 123 is always in a taut state. When the third gear 122 rotates forward, the first connecting rope 123 is wrapped around the third gear 122, so that the connecting rope pulls the threaded rod 124 to rotate forward. When the third gear 122 reverses, the third gear 122 reverses to loosen the first connecting rope 123. At this time, the threaded rod 124 reverses to wrap the first connecting rope 123 around the threaded rod 124.

[0070] The slide 125 is threadedly mounted on the threaded rod 124 and is threadably engaged with the threaded rod 124 so that the slide 125 can move along the extending direction of the threaded rod 124. Figure 5-6 As shown, the slide 125 is provided with a threaded through hole that passes through the slide 125 in the left and right directions. The threaded rod 124 is passed through the threaded through hole and cooperates with the threaded rod 124 to drive the slide 125 to move in the left and right directions when the threaded rod 124 rotates forward or reverse.

[0071] One end of the second connecting rope 126 is arranged on the slide 125, and the other end of the second connecting rope 126 is arranged on the first rod 13 and the second rod 14. The second connecting rope 126 has a second tensioning force to pull the first rod 13 and the second rod 14 to rotate. Figure 5-6As shown, one end of the second connecting rope 126 is tied to the slide 125, and the other end of the second connecting rope 126 is tied to the first rod 13 and the second rod 14. Therefore, when the slide 125 moves back and forth, it can drive the first rod 13 and the second rod 14 to rotate, so that the first rod 13 and the second rod 14 are rotated outside the installation cavity or retracted into the installation cavity.

[0072] The second elastic member is provided on the threaded rod 124 and the two ends of the second elastic member are connected to the threaded rod 124 and the base 1 respectively. The second elastic member has an elastic force that drives the threaded rod 124 to reverse. Specifically, Figure 5-6 As shown, the second elastic member is a torsion spring and is passed through the threaded rod 124. The two ends of the second elastic member are respectively fixedly mounted on the threaded rod 124 and the base 1, and the second elastic member has an elastic force to drive the threaded rod 124 to reverse. When the third gear 122 reverses, the tension on the first connecting rope 123 decreases, and the second elastic member will drive the threaded rod 124 to reverse, so that the first connecting rope 123 is wound around the threaded rod 124 to ensure the tension on the first connecting rope 123, and drive the slide 125 to reset.

[0073] In some embodiments, as Figure 6 As shown, the driving member 12 also includes a mounting rod 20, which extends in the left-right direction and is arranged in the mounting cavity. The slide 125 is passed through the mounting rod 20 and can slide on the mounting rod 20. Thus, the slide 125 is limited by the mounting rod 20 to ensure that the slide 125 only moves in the left-right direction, preventing the slide 125 from rotating on the threaded rod 124.

[0074] In some embodiments, both the first rod 13 and the second rod 14 can be connected to the base 1 through a torsion spring (not shown in the figure), and the torsion spring has a torsional force that drives the first rod 13 and the second rod 14 to rotate outside the installation cavity. When the slide 125 moves away from the middle of the threaded rod 125, the slide 125 retracts the first rod 13 and the second rod 14 into the installation cavity through the second connecting rope 126. When the slide 125 moves toward the middle of the threaded rod 125, the torsion spring will drive the first rod 13 and the second rod 14 to rotate outside the installation cavity.

[0075] The following is based on the attached Figure 1-6 The mining working face supporting hydraulic support 100 according to the embodiment of the present invention is described in detail.

[0076] Example 1:

[0077] Reference Figure 1 - Figure 6 A hydraulic support 100 for supporting a mining working face includes a rectangular base 1, the interior of the base 1 is a hollow structure, and a counterweight is installed in the base 1 to improve the stability of the base 1. Two symmetrically arranged telescopic members 2 are fixedly installed on the base 1. For details, see Figure 1and Figure 2 The base 1 has a first shell 101 extending in the left-right direction and a second shell 102 extending in the up-down direction with an open upper end. The first shell 101 and the second shell 102 are connected, and clamps 17 for clamping the telescopic member 2 are fixedly installed on both sides of the second shell 102.

[0078] A flexible barrier strip is installed on the inner peripheral surface of the opening of the second shell 102 to reduce the ingress of coal.

[0079] It should be added that the hoop 17 is composed of two hoop plates that are rotatably connected to the second shell 102 and are mirror-symmetrical. The two hoop plates are tightened by bolts to fix the telescopic member 2.

[0080] The mounting base 3 is fixedly mounted on the output end of the symmetrical telescopic member 2, see Figure 1 and Figure 2 A third side plate 8 is rotatably mounted on one side of the mounting base 3. A hydraulic cylinder is rotatably mounted below the mounting base 3, with the output end of the hydraulic cylinder rotatably connected to the third side plate 8. The hydraulic cylinder drives the third side plate 8 to rotate 180° along the side of the mounting base 3 to open and close, thus supporting the goaf. A top plate 4 is rotatably mounted on the mounting base 3 via a connecting portion. A first side plate 5 and a second side plate 6 are rotatably mounted on either side of the mounting base 3. These first and second side plates 5, 6 increase the support area, reduce the gaps between adjacent supports, and reduce the risk of personal injury to workers under the hydraulic support 100 due to the falling of the top plate 4 and the leakage of gangue.

[0081] See Figure 1 and Figure 2 and Figure 4 , the connection part in this scheme is further optimized.

[0082] The connecting portion includes a sleeve 10 fixedly mounted in the mounting seat 3, a slide rod 72 is slidably mounted in the sleeve 10, a sphere is fixedly mounted on the upper end of the slide rod 72, and a ball seat adapted to the sphere is fixedly mounted on the lower surface of the top plate 4.

[0083] When the roof 4 contacts and supports the goaf above, the ball rotates in the ball seat according to the slope of the goaf, thereby improving the self-adaptability of the roof 4.

[0084] A shell 71 is fixedly installed below the mounting base 3, and a first support rod 74 and a second support rod 75 are slidably installed in the shell 71. One end of the first slide rod 72 and one end of the second slide rod 72 both pass through the shell 71 and are rotatably installed with rollers, which are against the lower surfaces of the first side panel 5 and the second side panel 6.

[0085] See Figure 1 and Figure 2 and Figure 3 , the shell 71 in this solution is further optimized.

[0086] A gear roller is rotatably installed in the shell 71 (the gear roller can be the first gear 761 and the second gear 762), and a first rack 764 is meshed and connected to one side of the gear roller. A connecting piece 73 is fixedly installed below the first rack 764, and a limiting rod 77 that passes through the connecting piece 73 is fixedly installed at the bottom of the shell 71; the first support rod 74 and the second support rod 75 are located at one end in the shell 71 and are slidably installed on both sides of the connecting piece 73 respectively; the sliding rod 72 located above the shell 71 is provided with teeth (which can be the second rack 763) that are compatible with the gear roller.

[0087] When the roof 4 contacts and supports the goaf above, a slide bar 72 located in the housing 71 is provided with teeth. Therefore, the slide bar 72 is pressed downward by force to drive the gear roller to rotate. The rotating gear roller drives the first rack 764 to slide, causing the first rack 764 to move in the opposite direction of the slide bar 72.

[0088] When the first rack 764 is raised, the connecting member 73 pushes the first support rod 74 and the second support rod 75 on both sides out of the housing 71 , thereby supporting the first side plate 5 and the second side plate 6 .

[0089] The connecting member 73 as a whole has an equilateral trapezoidal structure that is narrow at the top and wide at the bottom. A first sloped slide groove 731 and a second sloped slide groove are respectively provided on both sides of the connecting member 73. Connecting balls are fixedly installed at the ends of the first support rod 74 and the second support rod 75 and slide in the first slide groove 731 and the second slide groove. Therefore, when the connecting member 73 rises, the first support rod 74 and the second support rod 75 can be pushed out.

[0090] See Figure 4 Furthermore, both ends of the first elastic member 11 are fixedly connected to the sleeve 10 and the ball seat 12 respectively.

[0091] When the roof 4 contacts and supports the goaf above, the first elastic member 11 contracts under force, applying a pre-tightening force to the roof 4, reducing the occurrence of loose and broken coal seams and leakage of gangue from the roof 4, as well as the occurrence of suspension between the hydraulic support 100 and the coal seam, thereby ensuring the supporting force and supporting effect of the hydraulic support 100.

[0092] In general, in supporting the coal mine working face, the telescopic member 2 drives the mounting seat 3 and the roof 4 to lift upward until the roof 4 contacts the goaf above. The spring is forced to contract, applying a pre-tightening force to the roof 4, reducing the occurrence of loose and broken coal seams and gangue leakage from the roof 4. The hydraulic cylinder pushes the third side plate 8 to support the goaf on the side, reducing the occurrence of loose and broken coal seams and gangue leakage from the roof 4.

[0093] When the top plate 4 contacts and supports the goaf above, since teeth are provided on a slide bar 72 located in the shell 71, the slide bar 72 is pressed downward by force to drive the gear roller to rotate, and the rotating gear roller drives the first rack 764 to slide, so that the first rack 764 moves in the opposite direction of the slide bar 72; when the first rack 764 rises, the connecting member 73 pushes the first support rod 74 and the second support rod 75 on both sides out of the shell 71, thereby supporting the first side plate 5 and the second side plate 6, increasing the support area, reducing the gap between adjacent supports, and reducing the risk of personal injury to workers under the hydraulic support 100 due to the falling of the top plate 4 and the leakage of gangue.

[0094] It should be added that in this solution, it is also necessary to install mobile equipment, such as a pneumatic monorail crane of model DQD15, which can be used as a mobile equipment to move the device while transporting coal.

[0095] Example 2:

[0096] See Figure 1 - Figure 6 , which is basically the same as Example 1. On the basis of Example 1, it is further optimized and specifically discloses an implementation plan for moving the device.

[0097] See Figure 5 and Figure 6 The mining working face support hydraulic support 100 in this embodiment also includes: an installation cavity is symmetrically opened below the base 1, and a first rod 13 and a second rod 14 are rotatably installed on the inner side wall of the groove of the installation cavity, and a first rotating wheel 15 and a second rotating wheel 16 are rotatably installed on the other end of the first rod 13 and the other end of the second rod 14.

[0098] As the mining face advances, the supports in the chute need to move forward, so a pneumatic monorail crane is needed to move the supports at the front end of the chute to the tail end of the column. Therefore, by installing the first turntable 15 and the second turntable 16 under the base 1, part of the pressure of the pneumatic monorail crane is shared, so that the supports can move along the ground, thereby improving the safety performance of the pneumatic monorail crane operation.

[0099] See Figure 5 and Figure 6A third rack is fixedly mounted below the housing 71. Two third gears 122 are symmetrically mounted inside the housing 71, meshing with the third racks. A first connecting rope 123 is wound around the third gears 122. A pair of shaft seats are fixedly mounted on the top wall of the groove within the mounting cavity. A threaded rod 124 is rotatably connected between the pair of shaft seats. One end of the threaded rod 124 passes through the shaft seat and is mounted with a fourth gear 19. Specifically, a second elastic member is disposed between the fourth gear and the threaded rod 124. When the third rack releases its constraint on the third gear 122, the second elastic member resets and drives the threaded rod 124 to rotate in the opposite direction, pulling the first and second rotating wheels 15 and 16 back into the mounting cavity, placing the base 1 on the ground. The fourth gear 19 is wound around the first connecting rope 123. A slide 125 is threadedly connected to the threaded rod 124. The slide 125 is rotatably connected to the first and second rods 13 and 14, and the mounting rod 20 is connected thereto.

[0100] When the bracket in the slot needs to be moved forward, the front bracket needs to return to its initial state. Therefore, when the telescopic member 2 pulls back the mounting seat 3 and the top plate 4, the downward-pulled mounting seat 3 inserts the third rack into the base 1, and the third gear 122 is rotated by force and pulls the first connecting rope 123. The first connecting rope 123 pulls the fourth gear 19 to rotate, and the fourth gear 19 drives the coaxial threaded rod 124 to rotate. It should be noted that a linear rail for constraining the rotation degree of the slide 125 is also fixedly installed on one side of the threaded rod 124, so that the slide 125 can only move linearly on the threaded rod 124. As the slide 125 approaches the first rod 13 and the second rod 14, the first rod 13 and the second rod 14 are pushed to rotate through the mounting rod 20, and the first rotating wheel 15 and the second rotating wheel 16 are pushed out of the mounting cavity and contact the ground, so that the bracket can move along the ground.

[0101] See Figure 5 and Figure 6 At least one fixing sleeve 18 is fixedly installed on the inner wall of the shell 71, and the first connecting rope 123 is slidably installed in the fixing sleeve 18.

[0102] The number of the fixing sleeves 18 is 3-5, and they are used to constrain the moving direction of the first connecting rope 123 and to transmit force.

[0103] Here, I will once again give an overall description of the working process of the entire article:

[0104] In supporting the coal mine working face, the telescopic member 2 drives the mounting seat 3 and the top plate 4 to lift upward until the top plate 4 contacts the goaf above. The first elastic member 11 contracts under the force, applying a pre-tightening force to the top plate 4, reducing the occurrence of loose and broken coal seam and gangue leakage from the top plate 4. The hydraulic cylinder pushes the third side plate 8 to support the goaf on the side, reducing the occurrence of loose and broken coal seam and gangue leakage from the top plate 4.

[0105] When the top plate 4 contacts and supports the goaf above, since teeth are provided on a slide bar 72 located in the shell 71, the slide bar 72 is pressed downward by force to drive the gear roller to rotate, and the rotating gear roller drives the first rack 764 to slide, so that the first rack 764 moves in the opposite direction of the slide bar 72; when the first rack 764 rises, the connecting member 73 pushes the first support rod 74 and the second support rod 75 on both sides out of the shell 71, thereby supporting the first side plate 5 and the second side plate 6, increasing the support area, reducing the gap between adjacent supports, and reducing the risk of personal injury to workers under the hydraulic support 100 due to the falling of the top plate 4 and the leakage of gangue.

[0106] As the mining face advances, the supports in the chute need to move forward, so a pneumatic monorail crane is needed to move the supports at the front end of the chute to the tail end of the column. Therefore, by installing the first turntable 15 and the second turntable 16 under the base 1, part of the pressure of the pneumatic monorail crane is shared, so that the supports can move along the ground, thereby improving the safety performance of the pneumatic monorail crane operation.

[0107] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0108] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0109] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0110] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0111] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0112] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A hydraulic support for supporting a mining working face, characterized in that: include: base; a telescopic member, the telescopic member being arranged on the base and being telescopically movable in an up-and-down direction; A mounting seat, the mounting seat being arranged on the telescopic member so that the telescopic member drives the mounting seat to move in an up and down direction; A top plate, the top plate being arranged on the mounting seat and spaced apart from the mounting seat in the vertical direction, the top plate being used to protect the goaf; a first side plate and a second side plate, the first side plate and the second side plate being spaced apart and opposite to each other along a width direction of the mounting base and being respectively provided on both sides of the mounting base, the first side plate and the second side plate being rotatable about a length direction of the mounting base between a horizontal position and a vertical position; A connecting assembly, which is passed through the mounting seat and is movable in the up and down directions relative to the mounting seat. The upper end of the connecting assembly is connected to the top plate, and the lower end of the connecting assembly is connected to the first side plate and the second side plate. The hydraulic support has a first working state and a second working state. In the first working state, when the telescopic member is extended to drive the top plate to resist the goaf, the top plate drives the connecting assembly to move downward to drive the first side plate and the second side plate to rotate to a horizontal position. In the second working state, the telescopic member is shortened to drive the top plate to separate from the goaf, and the connecting assembly moves upward to drive the first side plate and the second side plate to rotate to a vertical position.

2. The mining face support hydraulic support according to claim 1, characterized in that: It also includes a third side plate, which is arranged at one end of the mounting seat and can be rotated relative to the mounting seat around the width direction of the mounting seat in the horizontal position and the vertical position, so that when the top plate is against the goaf, the third side plate is rotated to the horizontal position.

3. The mining face support hydraulic support according to claim 1, characterized in that: Also includes: A support rod, the support rod being passed through the mounting seat and movable in an up-down direction relative to the mounting seat; a sleeve, the sleeve being arranged on the mounting seat and the support rod being passed through the sleeve, the support rod being movable in an up-down direction relative to the sleeve; A first elastic member, the first elastic member is arranged between the sleeve and the top plate and the two ends of the first elastic member are respectively connected to the sleeve and the top plate, the first elastic member is passed through the support rod, the first elastic member has an elastic force to drive the top plate, in the first working state, the top plate is resisted against the goaf to move the top plate downward, so that the top plate drives the first elastic member to compress, in the second working state, the top plate is separated from the goaf, so that the first elastic member drives the top plate to move upward.

4. The mining face support hydraulic support according to claim 1, characterized in that: The connection component includes: a housing, the housing being disposed at the lower end of the mounting base and connected to the mounting base; a slide rod extending in an up-down direction, an upper end of the slide rod being connected to the top plate, and a lower end of the slide rod being inserted into the housing; a connecting member disposed in the housing and cooperating with the slide rod so that when the slide rod moves downward, the connecting member moves upward, or when the slide rod moves upward, the connecting member moves downward; A first support rod and a second support rod, the first support rod and the second support rod are arranged opposite to each other along the width direction of the mounting seat, one end of the first support rod is passed through the shell and cooperates with the connecting member, the other end of the first support rod passes through the outside of the shell and abuts against the lower end surface of the first side plate, one end of the second support rod is passed through the shell and cooperates with the connecting member, the other end of the second support rod passes through the outside of the shell and abuts against the lower end surface of the second side plate, in the first working state, the telescopic member drives the top plate to abut against the goaf, the sliding rod moves downward to drive the connecting member to move upward, the connecting member drives the first support rod and the second support rod to move in a direction away from the mounting seat so that the first side plate and the second side plate are in a horizontal position, in the second working state, the telescopic member drives the top plate to separate from the goaf, the top plate can drive the sliding rod to move upward to drive the connecting member to move downward, and the connecting member drives the first support rod and the second support rod to move in a direction adjacent to the mounting seat so that the first side plate and the second side plate are in a vertical position.

5. The hydraulic support for supporting a mining working face according to claim 4, characterized in that: A first matching portion is provided at the upper end of the sliding rod, and a second matching portion is provided at the lower end surface of the top plate. One of the first matching portion and the second matching portion is a sphere, and the other of the first matching portion and the second matching portion is a ball seat. The first matching portion and the second matching portion are rotatably matched.

6. The hydraulic support for supporting a mining working face according to claim 4, characterized in that: The connecting assembly also includes a transmission member arranged in the shell, and the transmission member includes a first gear, a second gear, a rotating shaft and a first rack. The rotating shaft extends along the length direction of the mounting seat and is rotatably arranged in the shell. The first gear and the second gear are both passed through the rotating shaft and are arranged opposite to each other along the width direction of the mounting seat. The first rack extends in the up and down directions and meshes with the first gear. The first rack is connected to the connecting member, and a second rack is provided at the lower end of the sliding rod. The second gear is meshed with the second rack, so that the connecting member and the sliding rod are connected through the transmission member.

7. The mining face support hydraulic support according to claim 5, characterized in that: The connecting assembly further includes a limiting rod disposed in the housing, the limiting rod extending in an up-down direction and connected to the housing, the connecting member passing through the limiting rod and movable in an up-down direction relative to the limiting rod.

8. The hydraulic support for mining working face support according to claim 5, characterized in that: The connecting member is provided with a first slide groove and a second slide groove extending in the up-down direction, the first slide groove and the second slide groove are arranged opposite to each other in the width direction of the mounting seat, the first slide groove extends from top to bottom and is inclined from the inside of the connecting member toward the outside of the connecting member, and the second slide groove extends from top to bottom and is inclined from the inside of the connecting member toward the outside of the connecting member. One end of the first support rod is arranged in the first slide groove and slides in the first slide groove along the extension direction of the first slide groove, and one end of the second support rod is arranged in the second slide groove and slides in the second slide groove along the extension direction of the second slide groove.

9. The mining face support hydraulic support according to claim 1, characterized in that: The base is provided with a mounting cavity. The hydraulic support further comprises: A driving member extending in a vertical direction and having an upper end connected to the mounting seat so that the mounting seat drives the driving member to move in the vertical direction, and a lower end of the driving member is disposed in the mounting cavity; a first rod and a second rod, the first rod and the second rod being spaced apart along the length direction of the mounting seat, the first rod and the second rod being rotatably arranged in the mounting cavity around the width direction of the mounting seat and both cooperating with the lower end of the driving member, in the first working state, the mounting seat drives the driving member to move upward, and the driving member drives the first rod and the second rod to be retracted into the mounting cavity, and in the second working state, the mounting seat drives the driving member to move downward, and the driving member drives the other end of the first rod and the other end of the second rod to extend out of the mounting cavity, and the first rod and the second rod are supported on the ground; A first rotating wheel and a second rotating wheel, wherein the first rotating wheel and the second rotating wheel are rotatably provided on the other end of the first rod and the other end of the second rod respectively, so that in the second working state, the first rotating wheel and the second rotating wheel are supported on the ground by the first rod and the second rod respectively.

10. The mining face support hydraulic support according to claim 9, characterized in that: The driving member includes: a third rack, the third rack being disposed below the mounting seat and connected to the mounting seat, the lower end of the third rack being passed through the base; a third gear rotatably disposed in the mounting cavity, the third rack being meshed with the third gear so that when the mounting base moves up and down, the third rack drives the third gear to rotate; a first connecting rope, one end of which is wound around the third gear, so that when the third gear rotates, the first connecting rope is wound around the third gear; a threaded rod extending along the width direction of the mounting seat and rotatably disposed in the mounting cavity, the other end of the first connecting rope being wound around one end of the threaded rod, the first connecting rope having a first tensioning force for pulling the threaded rod to rotate, so that when the third rack moves downward, the first connecting rope is wound around the third gear, and the third gear drives the threaded rod to rotate forwardly via the first connecting rope; a slide seat, the slide seat being passed through the threaded rod and threadably engaged with the threaded rod so that the slide seat is movable on the threaded rod along an extension direction of the threaded rod; a second connecting rope, one end of which is provided on the sliding seat, and the other end of which is provided on the first rod and the second rod, the second connecting rope having a second tensioning force for pulling the first rod and the second rod to rotate; The second elastic member is provided on the threaded rod and two ends of the second elastic member are respectively connected to the threaded rod and the base. The second elastic member has an elastic force for driving the threaded rod to reverse.

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