Double-layer hyperstatic hydraulic support

Abstract

The present invention discloses a double-layer hyperstatic hydraulic support, which includes a base, a first support assembly, a second support assembly, and a transmission assembly. The base includes a body and an expansion member. The body has a first mounting slot. The expansion member is disposed in the first mounting slot. The first support assembly is movable in the vertical direction relative to the base. The second support assembly is movable in the vertical direction relative to the base. The transmission assembly includes a rack, a first transmission member, and a second transmission member. The rack connects the first support assembly and the second support assembly. The rack is movable relative to the first support assembly. The first transmission member is disposed on the first support assembly and cooperates with the rack. The second transmission member is disposed in the first mounting slot and is connected to at least a portion of the expansion member. The second transmission member cooperates with the first transmission member. The rack moves in the vertical direction and drives the expansion member to move in the first mounting slot via the first transmission member and the second transmission member. The double-layer hyperstatic hydraulic support of the embodiment of the present invention is stable during support.

Description

Technical Field

[0001] The present invention relates to the technical field of hydraulic supports, and in particular to a double-layer hyperstatic hydraulic support. Background Art

[0002] Support equipment for underground coal mining faces is essential equipment. The support equipment used in my country's coal mines primarily includes single-layer hydraulic supports, such as single-bar and four-bar hydraulic supports. However, when the coal seam is high, single-layer support equipment cannot meet the required support height. Therefore, some support equipment has evolved into double-layer hydraulic supports that can achieve higher mining heights.

[0003] However, as the hydraulic support rises, the pressure on the bottom of the hydraulic support gradually increases and the stability gradually decreases, posing a safety hazard during the support process. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, an embodiment of the present invention provides a double-layered statically indeterminate hydraulic support, which is stable during support and can solve the problem of safety hazards.

[0005] The double-layer hyperstatic hydraulic support of the embodiment of the present invention includes a base, the base includes a body and an expansion member, the body has a first mounting groove, the expansion member is arranged in the first mounting groove, and the expansion member can move in the first mounting groove relative to the body; a first support assembly, the first support assembly is arranged above the base, and the first support assembly can move in the up and down direction relative to the base; a second support assembly, the second support assembly is arranged above the first support assembly, and the second support assembly can move in the up and down direction relative to the base; a transmission assembly, the transmission assembly includes a rack, a first transmission member and a second transmission member, the rack connects the first support assembly and the second support assembly, and the rack is movable relative to the first support assembly, the first transmission member is arranged on the first support assembly, and the first transmission member cooperates with the rack, the second transmission member is arranged in the first mounting groove and connected to at least a portion of the expansion member, the second transmission member cooperates with the first transmission member,

[0006] The second supporting assembly moves relative to the base in the up-down direction to drive the rack to move in the up-down direction, thereby driving the expansion member to move in the first installation slot through the first transmission member and the second transmission member, so that the expansion member extends out of the first installation slot or retracts into the first installation slot;

[0007] a first driving member, the first driving member being provided between the base and the first supporting assembly, the first driving member being used to drive the first supporting assembly to move in the vertical direction; a second driving member, the second driving member being provided between the first supporting assembly and the second supporting assembly, the second driving member being used to drive the second supporting assembly to move in the vertical direction;

[0008] The first support assembly includes: a first part, the first part extends along a first direction, the first direction is orthogonal to the up-down direction, the first part has a through hole, the end of the rack away from the second support assembly passes through the through hole, the first transmission member is provided at the bottom of the first part and cooperates with the rack; a second part, at least a part of the second part is connected to the first part, and the second part is rotatable relative to the first part; a third driving member, the third driving member is provided at the bottom of the first part, the third driving member connects the first part and the second part, and the third driving member is used to drive the second part to rotate relative to the first part.

[0009] The double-layer hyperstatic hydraulic support of the embodiment of the present invention includes a first support component and a second support component, and the first support component and the second support component are both movable in the up and down directions relative to the main body, so that the double-layer hyperstatic hydraulic support of the embodiment of the present invention can adjust the support height according to the height of the coal seam when in use, so as to achieve support for coal seams of different heights, thereby improving the applicability of the double-layer hyperstatic hydraulic support of the embodiment of the present invention. When the second support component moves in the up and down directions relative to the base and drives the rack in the up and down directions, the rack drives the first transmission member to transmit, the first transmission member drives the second transmission member to transmit, and the second transmission member drives the expansion member to move in the first installation groove so that the expansion member extends out of or retracts the first installation groove. The expansion member extending out of the first installation groove can increase the support area of ​​the base, lower the center of the double-layer hyperstatic hydraulic support of the embodiment of the present invention, and make the double-layer hyperstatic hydraulic support of the embodiment of the present invention stable during support.

[0010] In some embodiments, the first support assembly further includes a third part and a fourth driving member, wherein the third part is provided on the second part and is movable relative to the second part, and the fourth driving member is provided at the bottom of the second part, the fourth driving member connects the second part and the third part, and the fourth driving member is used to drive the third part to move relative to the second part.

[0011] In some embodiments, the first transmission member includes: a first gear, the first gear is provided on the bottom surface of the first part, the first gear cooperates with the rack, and the rack moves in the up and down direction so that the first gear can rotate around a second direction, and the second direction is orthogonal to the up and down direction and the first direction; a second gear, the second gear is provided on the bottom surface of the first part, the second gear and the first gear are arranged at intervals in the second direction, and the first gear can drive the second gear to rotate around the second direction; a transmission roller and a third gear, the third gear is two, and the two third gears are respectively provided at both ends of the transmission roller, the transmission roller extends along the up and down direction, and the transmission roller can rotate around the up and down direction relative to the main body, the third gear located at one end of the transmission roller cooperates with the second gear, and the third gear located at the other end of the transmission roller cooperates with the second transmission member.

[0012] In some embodiments, the second transmission member includes: a fourth gear, the fourth gear is arranged in the first mounting groove, the third gear located at the other end of the transmission roller cooperates with the fourth gear, and the transmission roller rotates around the up and down directions to drive the fourth gear to rotate around the first direction; a connecting member, the outer wall surface of the connecting member has an external thread, one end of the connecting member is connected to the fourth gear, the expansion member has a channel, the inner wall surface of the channel has an internal thread, the other end of the connecting member penetrates into the channel, the outer wall surface of the connecting member is threadedly cooperated with the inner wall surface of the channel, the expansion member is movable relative to the connecting member, and the fourth gear drives the connecting member to rotate around the first direction to drive the expansion member to move along the first direction.

[0013] In some embodiments, the second transmission member further includes: a rotating shaft, one end of the rotating shaft is connected to the fourth gear, and the fourth gear drives the rotating shaft to rotate around the first direction; a first pulley, the first pulley is arranged at the other end of the rotating shaft, and the rotating shaft drives the first pulley to rotate around the first direction; a second pulley, the second pulley is arranged at an interval with the first pulley in the second direction, and the second pulley is connected to one end of the connecting member; a transmission belt, the transmission belt connects the first pulley and the second pulley, the first pulley rotates around the first direction to drive the second pulley to rotate around the first direction, thereby causing the connecting member to rotate around the first direction.

[0014] In some embodiments, the double-layer hyperstatic hydraulic support also includes: a rotating arm and a support member, the rotating arm and the support member are arranged at intervals along the first direction at the bottom of the expander, the rotating arm is rotatable relative to the expander, and the support member is rotatable relative to the expander; a pull rod, the pull rod connects the rotating arm and the support member; an elastic member, the elastic member connects the bottom of the expander and the rotating arm, when the expander is located in the first mounting groove, the elastic member is in a compressed state, when the expander extends out of the first mounting groove, the elastic member resets and pulls the rotating arm to rotate relative to the expander, and the expander rotates the support member relative to the expander through the pull rod.

[0015] In some embodiments, the double-layer hyperstatic hydraulic support also includes: a top plate, which is arranged on the top surface of the second support assembly; an adjustment assembly, which is arranged between the top plate and the second support assembly, and the adjustment assembly includes a first connecting frame, a second connecting frame, an adjustment member and a fifth driving member, the first connecting frame is arranged on the top surface of the second support assembly and is movable relative to the second support assembly, the second connecting frame is arranged on the first connecting frame and is rotatable relative to the first connecting frame, the adjustment member connects the second connecting frame and the bottom surface of the top plate, the adjustment member is rotatable relative to the second connecting frame and the top plate, the second driving member is connected to the first connecting frame, the second driving member drives the first connecting frame to move, the first connecting frame drives the second connecting frame to move, and the second connecting frame drives the adjustment member to move so as to adjust the angle between the top plate and the top surface of the second support assembly.

[0016] In some embodiments, the main body also has a second mounting groove, which is located at the bottom of the main body. The double-layer hyperstatic hydraulic support also includes a roller and a sixth driving member. The sixth driving member and the roller are arranged in the second mounting groove. The sixth driving member is connected to the roller, and the roller is rotatable relative to the sixth driving member. The sixth driving member is used to drive the roller to extend out of the second mounting groove or retract into the second mounting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 2 is a schematic structural diagram of a double-layer hyperstatic hydraulic support according to an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 Enlarged schematic diagram of part A.

[0019] Figure 3 Schematic diagram of a transmission roller of a double-layer hyperstatic hydraulic support according to an embodiment of the present invention.

[0020] Figure 4 Schematic diagram of the second transmission member of the double-layer hyperstatic hydraulic support according to an embodiment of the present invention.

[0021] Figure 5 Schematic diagram of an expansion piece of a double-layer hyperstatic hydraulic support according to an embodiment of the present invention.

[0022] Figure 6 Schematic diagram of an adjustment assembly of a double-layer hyperstatic hydraulic support according to an embodiment of the present invention.

[0023] Figure numerals: 1, base; 11, body; 111, first mounting slot; 112, second mounting slot; 12, expansion piece; 13, counterweight box; 14, first clamp; 2, first support assembly; 21, first part; 211, perforation; 22, second part; 23, third driving member; 24, third part; 241, first plate; 242, second plate; 25, fourth driving member; 3, second support assembly; 31, fourth part; 32, fifth part; 33, seventh driving member; 34, sixth part; 341, third plate; 2342, fourth plate; 35, eighth driving member; 4, transmission assembly; 41, rack; 42, first transmission member; 421, first gear; 422, second gear; 423, transmission roller; 423 1. First roller; 4232. Sleeve; 42321. Inner cavity; 4233. Limiting member; 424. Third gear; 43. Second transmission member; 431. Fourth gear; 432. Connecting member; 433. Rotating shaft; 434. First pulley; 4341. First groove; 435. Second pulley; 4351. Second groove; 436. Transmission belt; 437. Support seat; 51. First driving member; 52. Second driving member; 61. Rotating arm; 62. Support member; 63. Pull rod; 64. Elastic member; 65. Adjusting bolt; 66. Pad; 71. Top plate; 72. Adjusting assembly; 721. First connecting frame; 722. Second connecting frame; 723. Adjusting member; 724. Fifth driving member; 81. Roller; 82. Sixth driving member. DETAILED DESCRIPTION

[0024] 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.

[0025] like Figure 1-6 As shown, the double-layer hyperstatic hydraulic support of the embodiment of the present invention includes a base 1, a first support assembly 2, a second support assembly 3 and a transmission assembly 4. Specifically, as Figure 1 As shown, the base 1, the first support assembly 2 and the second support assembly 3 are arranged in sequence and spaced apart in the up and down directions.

[0026] The base 1 includes a body 11 and an expansion member 12. The body 11 has a first mounting groove 111. The expansion member 12 is disposed in the first mounting groove 111. The expansion member 12 can move relative to the body 11 in the first mounting groove 111. Specifically, Figure 4 As shown, the first mounting groove 111 extends in the left-right direction, so that the expansion member 12 can move in the left-right direction in the first mounting groove 111. A counterweight 121 is provided on the expansion member 12 to increase the weight of the expansion member 12 and ensure the stability of the double-layer hyperstatic hydraulic support of the embodiment of the present invention.

[0027] In some embodiments, there are two first mounting grooves 111 , which are respectively located at two ends of the body 11 . There are two expansion members 12 , which are respectively disposed in a one-to-one correspondence with the two first mounting grooves 111 .

[0028] Specifically, the inner wall surface of the first mounting groove 111 includes a slideway (not shown), which extends along the extension direction of the first mounting groove 111. The outer wall surface of the expander 12 includes a slider (not shown), which extends along the extension direction of the expander 12. The slider cooperates with the slideway and can slide within the slideway along the extension direction of the slideway, thereby allowing the expander 12 to move along the extension direction of the slideway and improving the fit between the expander 12 and the first mounting groove 111.

[0029] The first support assembly 2 is disposed above the base 1 and is movable in the vertical direction relative to the base 1. The second support assembly 3 is disposed above the first support assembly 2 and is movable in the vertical direction relative to the base 1. Thus, the double-layer statically indeterminate hydraulic support of the embodiment of the present invention can adjust the support height according to the height of the coal seam during use, thereby supporting coal seams of different heights and improving the applicability of the double-layer statically indeterminate hydraulic support of the embodiment of the present invention.

[0030] The transmission assembly 4 includes a rack 41, a first transmission member 42, and a second transmission member 43. The rack 41 connects the first support assembly 2 and the second support assembly 3, and the rack 41 is movable relative to the first support assembly 2. The first transmission member 42 is provided on the first support assembly 2, and the first transmission member 42 cooperates with the rack 41. The second transmission member 43 is provided in the first mounting groove 111 and is connected to at least a portion of the expansion member 12. The second transmission member 43 cooperates with the first transmission member 42. Specifically, as Figure 1 As shown, the rack 41 extends in the up-down direction, the upper end of the rack 41 is aligned with the bottom of the second support assembly 3 , and the lower end of the rack 41 extends downward and cooperates with the first transmission member 42 .

[0031] The second support assembly 3 moves in the up and down directions relative to the base 1 to drive the rack 41 to move in the up and down directions, thereby driving the expansion member 12 to move in the first installation groove 111 through the first transmission member 42 and the second transmission member 43, so that the expansion member 12 extends out of the first installation groove 111 or retracts into the first installation groove 111.

[0032] In the double-layer hyperstatic hydraulic support of the embodiment of the present invention, when the second support component 3 moves in the up and down directions relative to the base 1 and drives the rack 41 in the up and down directions, the rack 41 drives the first transmission member 42 to transmit, the first transmission member 42 drives the second transmission member 43 to transmit, and the second transmission member 43 drives the expansion member 12 to move in the first installation groove 111, so that the expansion member 12 extends out of or retracts into the first installation groove 111. The expansion member 12 extending out of the first installation groove 111 can increase the support area of ​​the base 1, lower the center of the double-layer hyperstatic hydraulic support of the embodiment of the present invention, and make the double-layer hyperstatic hydraulic support of the embodiment of the present invention stable during support.

[0033] In some embodiments, the double-layer hyperstatic hydraulic support according to the present invention further includes a first driving member 51 and a second driving member 52. The first driving member 51 is disposed between the base 1 and the first support assembly 2 and is used to drive the first support assembly 2 to move vertically. The second driving member 52 is disposed between the first support assembly 2 and the second support assembly 3 and is used to drive the second support assembly 3 to move vertically.

[0034] Specifically, if Figure 1 As shown, the base 1 also includes a counterweight box 13, which is located in the middle of the top surface of the body 11. The counterweight box 13 extends in the vertical direction to increase the mass of the base 1, making the double-layer hyperstatic hydraulic support according to the embodiment of the present invention more stable during support. The base 1 also includes two first clamps 14, which are respectively located on the left and right side surfaces of the counterweight box 13.

[0035] Specifically, if Figure 1 As shown, there are two first driving members 51, which are respectively arranged on the left and right sides of the counterweight box 13 in the left-right direction. Two first clamps 14 are provided in a one-to-one correspondence with the two first driving members 51. The first clamps 14 surround the outer wall surface of the first driving member 51 to connect the first driving member 51 to the counterweight box 13, so that the first driving member 51 drives the first support assembly 2 to move stably in the vertical direction.

[0036] There are two second driving members 52 , which are spaced apart in the left-right direction, and the two first driving members 51 and the two second driving members 52 are disposed in a one-to-one correspondence.

[0037] In some embodiments, the first support assembly 2 includes a first portion 21, a second portion 22 and a third driving member 23. The first portion 21 is arranged along a first direction (eg Figure 1 The first portion 21 has a through hole 211, and the rack 41 is away from one end of the second support assembly 3 (as shown). Figure 1 The lower end of the rack 41 shown in FIG. 2 passes through the through hole 211, and the first transmission member 42 is provided at the bottom of the first portion 21 and cooperates with the rack 41. Specifically, as Figure 1 As shown, the first portion 21 extends in the left-right direction, the through hole 211 is located in the middle of the first portion 21 , and the first transmission member 42 is located in the through hole 211 and cooperates with the rack 41 .

[0038] At least a portion of the second portion 22 is connected to the first portion 21, and the second portion 22 is rotatable relative to the first portion 21. A third driving member 23 is provided at the bottom of the first portion 21, connecting the first portion 21 and the second portion 22, and driving the second portion 22 to rotate relative to the first portion 21.

[0039] Specifically, if Figure 1 As shown, there are two second parts 22, the left end of the first second part 22 is connected to the right end of the first part 21, and the right end of the first second part 22 can rotate relative to the first part 21. The right end of the second second part 22 is connected to the left end of the first part 21, and the left end of the second second part 22 can rotate relative to the first part 21.

[0040] There are two third driving members 23. The first third driving member 23 is located at the bottom of the right end of the first portion 21. The first third driving member 23 drives the right end of the first second portion 22 to rotate relative to the first portion 21. The second third driving member 23 is located at the bottom of the left end of the first portion 21. The second third driving member 23 drives the left end of the second second portion 22 to rotate relative to the first portion 21. Thus, by driving the second portion 22 to rotate relative to the first portion 21 through the third driving member 23, the sidewall of the tunnel can be supported.

[0041] In some embodiments, the second support assembly 3 includes a fourth portion 31, a fifth portion 32 and a seventh driving member 33. The fourth portion 31 extends in the left-right direction. Figure 1 As shown, the fourth portion 31 extends in the left-right direction. There are two fifth portions 32. The left end of the first fifth portion 32 is connected to the right end of the fourth portion 31, and the right end of the first fifth portion 32 is rotatable relative to the fourth portion 31. The right end of the second fifth portion 32 is connected to the left end of the fourth portion 31, and the left end of the second fifth portion 32 is rotatable relative to the fourth portion 31.

[0042] There are two seventh driving members 33. The first seventh driving member 33 is located at the bottom of the right end of the fourth portion 31. The first seventh driving member 33 drives the right end of the first fifth portion 32 to rotate relative to the fourth portion 31. The second seventh driving member 33 is located at the bottom of the left end of the fourth portion 31. The second seventh driving member 33 drives the left end of the second fifth portion 32 to rotate relative to the fourth portion 31. Thus, by driving the fifth portion 32 to rotate relative to the fourth portion 31 through the seventh driving member 33, the sidewall of the tunnel can be supported.

[0043] In some embodiments, the first support assembly 2 further includes a third part 24 and a fourth driving member 25. The third part 24 is provided on the second part 22, and the third part 24 is movable relative to the second part 22. The fourth driving member 25 is provided at the bottom of the second part 22. The fourth driving member 25 connects the second part 22 and the third part 24. The fourth driving member 25 is used to drive the third part 24 to move relative to the second part 22.

[0044] Specifically, if Figure 1 As shown, there are two third sections 24, each corresponding to the two second sections 22. The third section 24 includes a first plate 241 and a second plate 242. One end of the first plate 241 is connected to one end of the second plate 242, and an angle exists between the first plate 241 and the second plate 242. The other end of the first plate 241 is connected to the end of the second section 22 away from the first section 21. The first plate 241 is movable relative to the second section 22 on the second section 22, and the second plate 242 is located on the bottom surface of the first plate 241.

[0045] There are two fourth driving members 25, each corresponding to the two third portions 24. The fourth driving members 25 are located on the bottom surface of the second portion 22 at an end distal from the first portion 21. The fourth driving members 25 drive the first plate 241 to move relative to the second portion 22. This not only increases and strengthens the support distance of the double-layered, statically indeterminate hydraulic support provided to the tunnel sidewall, but also allows for crushing of relatively rigid tunnel sidewalls, further strengthening the support provided by the double-layered, statically indeterminate hydraulic support provided to the tunnel.

[0046] In some embodiments, as Figure 1As shown, the second support assembly 3 also includes a sixth portion 34 and an eighth drive member 35. There are two sixth portions 34, each corresponding to the two fourth portions 31. The sixth portion 34 includes a third plate 341 and a fourth plate 2342. One end of the third plate 341 is connected to one end of the fourth plate 2342, and an angle is formed between the third plate 341 and the fourth plate 2342. The other end of the third plate 341 is connected to the end of the fourth portion 31 away from the first portion 21. The third plate 341 is movable relative to the fourth portion 31 on the fourth portion 31. The fourth plate 2342 is located on the bottom surface of the third plate 341.

[0047] There are two eighth driving members 35, one corresponding to each of the two sixth portions 34. The eighth driving member 35 is located on the bottom surface of the end of the fourth portion 31 that is distal from the first portion 21. The eighth driving member 35 drives the third plate 341 to move relative to the fourth portion 31. This not only increases and strengthens the support distance of the double-layered, statically indeterminate hydraulic support provided to the tunnel sidewall, but also allows for crushing of relatively rigid tunnel sidewalls, further strengthening the support provided by the double-layered, statically indeterminate hydraulic support provided to the tunnel.

[0048] In some embodiments, the first transmission member 42 includes a first gear 421, a second gear 422, a transmission roller 423, and a third gear 424. The first gear 421 is provided on the bottom surface of the first portion 21, and the first gear 421 cooperates with the rack 41. The rack 41 moves in the up and down direction so that the first gear 421 can rotate around the second direction (such as Figure 4 The second direction is perpendicular to the up-down direction and the first direction. The second gear 422 is disposed on the bottom surface of the first portion 21. The second gear 422 and the first gear 421 are spaced apart in the second direction, and the first gear 421 can drive the second gear 422 to rotate in the second direction.

[0049] Specifically, if Figure 2 As shown, the first gear 421 and the second gear 422 are coaxially arranged and spaced apart along the second direction. The rack 41 meshes with the first gear 421, so that when the rack 41 moves in the vertical direction, it drives the first gear 421 to rotate in the second direction. The rotation of the first gear 421 in the second direction generates a rotational force, which is transmitted from the first gear 421 to the second gear 422, causing the second gear 422 to rotate in the second direction.

[0050] There are two third gears 424, which are respectively arranged at both ends of the transmission roller 423. The transmission roller 423 extends in the up and down directions. The transmission roller 423 can rotate in the up and down directions relative to the main body 11. The third gear 424 located at one end of the transmission roller 423 cooperates with the second gear 422, and the third gear 424 located at the other end of the transmission roller 423 cooperates with the second transmission member 43.

[0051] Specifically, if Figure 2 and Figure 3 As shown, the drive roller 423 includes a first roller 4231, a second roller (not shown), and a sleeve 4232. The sleeve 4232 has an inner cavity 42321. One end of the first roller 4231 extends into the inner cavity 42321 from one end of the sleeve 4232. The first roller 4231 can move relative to the sleeve 4232 within the inner cavity 42321 along the extension direction of the inner cavity 42321 to accommodate the vertical movement of the first portion 21. One end of the first roller 4231 has a stopper 4233, which is arranged around the outer wall of the first roller 4231 to prevent one end of the first roller 4231 from being separated from the other end of the sleeve 4232.

[0052] One end of the second roller extends from the other end of sleeve 4232 into inner cavity 42321. The second roller is movable relative to sleeve 4232 within inner cavity 42321 along the extension direction of inner cavity 42321 to accommodate the vertical movement of first portion 21. A stopper 4233 is provided at one end of the second roller. The stopper 4233 surrounds the outer wall of the second roller to prevent one end of the second roller from being dislodged from one end of sleeve 4232.

[0053] In some embodiments, the limiter 4233 has a rubber pad (not shown) on its outer wall surface close to the inner wall surface of the inner cavity 42321, and the rubber pad is arranged around the outer wall surface of the limiter 4233 to reduce the collision between the first roller 4231 and the second roller and the inner wall surface of the inner cavity 42321.

[0054] Specifically, the counterweight box 13 has a chamber (not shown) extending in the vertical direction. A sleeve 4232 is disposed within the chamber and extends vertically therein. The other end of a first roller 4231 extends from the top surface of the counterweight box 13 and is movable vertically relative to the counterweight box 13. The other end of a second roller extends from the bottom surface of the counterweight box 13 and is positioned within the first mounting groove 111.

[0055] Specifically, two third gears 424 are respectively provided at the other end of the first roller 4231 and the other end of the second roller. The third gear 424 at the other end of the first roller 4231 meshes with the second gear 422, so that the rotational force generated by the second gear 422 rotating in the second direction is transmitted to the first roller 4231, allowing the first roller 4231 to rotate in the vertical direction, thereby driving the sleeve 4232 and the second roller to rotate in the vertical direction. The second roller then drives the third gear 424 at the other end of the second roller to rotate in the vertical direction.

[0056] In some embodiments, the chamber is provided with a second clamp (not shown) that surrounds the outer wall of sleeve 4232, connecting sleeve 4232 to the inner wall of the chamber via the second clamp. Sleeve 4232 is movable within the chamber relative to the clamp along the chamber's extension. The second clamp acts as a position limiter for sleeve 4232, preventing it from shaking as it moves within the chamber.

[0057] In some embodiments, the second transmission member 43 includes a fourth gear 431 and a connecting member 432. The fourth gear 431 is disposed within the first mounting slot 111. The third gear 424 located at the other end of the transmission roller 423 engages with the fourth gear 431. The vertical rotation of the transmission roller 423 drives the fourth gear 431 to rotate in the first direction. Specifically, the third gear 424 located at the other end of the second roller meshes with the fourth gear 431. The vertical rotation of the third gear 424 at the other end of the second roller transmits the rotational force generated by the vertical rotation of the third gear 424 to the fourth gear 431, causing the fourth gear 431 to rotate in the left-right direction.

[0058] The outer wall surface of the connecting member 432 has an external thread, and one end of the connecting member 432 (such as Figure 4 The left end of the connecting member 432 shown in FIG) is connected to the fourth gear 431, the expansion member 12 has a channel (not shown), the inner wall of the channel has an internal thread, and the other end of the connecting member 432 (as shown Figure 4 The right end of the connecting member 432 shown in the figure is inserted into the channel, the outer wall of the connecting member 432 is threadedly engaged with the inner wall of the channel, the expansion member 12 is movable relative to the connecting member 432, and the fourth gear 431 drives the connecting member 432 to rotate around the first direction to drive the expansion member 12 to move along the first direction.

[0059] Specifically, the left end of the connecting member 432 is connected to the fourth gear 431, and the right end of the connecting member 432 is engaged with the channel thread on the expansion member 12. The fourth gear 431 rotates in the left and right directions to drive the connecting member 432 to rotate in the left and right directions, thereby moving the expansion member 12 in the left and right directions. Thus, the rack 41 is driven to move in the up and down directions by the second support assembly 3, and the first transmission member 42 and the second transmission member 43 are driven in turn to control the movement of the expansion member 12 in the first mounting groove 111, which not only improves the compactness and continuity of the double-layer hyperstatic hydraulic support structure of the embodiment of the present invention, but also makes the expansion member 12 easy to operate when moving in the first mounting groove 111. By controlling the expansion plate to slide out of the first mounting groove 111, the support area of ​​the base 1 is increased, the center of gravity is lowered, and the stability of the double-layer hyperstatic hydraulic support of the embodiment of the present invention during support is improved.

[0060] In some embodiments, the second transmission member 43 further includes a rotating shaft 433, a first pulley 434, a second pulley 435 and a transmission belt 436. One end of the rotating shaft 433 (e.g. Figure 4 The left end of the rotating shaft 433 shown in FIG. 4 is connected to the fourth gear 431, and the fourth gear 431 drives the rotating shaft 433 to rotate around the first direction. The first pulley 434 is provided at the other end of the rotating shaft 433 (as shown in FIG. Figure 4 The left end of the rotating shaft 433 is shown in FIG. 4 ), the rotating shaft 433 drives the first pulley 434 to rotate about the first direction. Specifically, the central axis of the fourth gear 431, the central axis of the rotating shaft 433 in the left-right direction, and the central axis of the first pulley 434 coincide with each other.

[0061] The second pulley 435 is spaced apart from the first pulley 434 in the second direction, and the second pulley 435 is connected to one end of the connecting member 432. A transmission belt 436 connects the first pulley 434 and the second pulley 435. The first pulley 434 rotates in the first direction to drive the second pulley 435 to rotate in the first direction, thereby causing the connecting member 432 to rotate in the first direction.

[0062] Specifically, there are two second pulleys 435, spaced apart along the second direction, with the first pulley 434 positioned between the two second pulleys 435. There are two connecting members 432, each corresponding to the two second pulleys 435. The left end of the connecting member 432 is connected to the second pulley 435, while the right end of the connecting member 432 is connected to the expansion member 12. This strengthens the connection between the second transmission member 43 and the expansion member 12.

[0063] The outer wall surface of the first pulley 434 has two first grooves 4341 spaced apart in the left-right direction, and the first grooves 4341 are arranged along the outer circumference of the first pulley 434. The outer wall surface of the second pulley 435 has a second groove 4351, and the second groove 4351 is arranged along the outer circumference of the second pulley 435. The two second grooves 4351 on the two second pulleys 435 correspond to the two first grooves 4341 on the first pulley 434.

[0064] There are two transmission belts 436, and the two transmission belts 436 and the two first grooves 4341 are arranged in a one-to-one correspondence. The transmission belt 436 connects the two second pulleys 435 and the first pulley 434, so that when the fourth gear 431 drives the first pulley 434 to rotate in the left and right directions, the first pulley 434 can drive the second pulley 435 to rotate in the left and right directions through the transmission belt 436, thereby driving the expansion member 12 to move in the left and right directions through the connecting member 432.

[0065] In some embodiments, the second transmission member 43 further includes a support base 437, which is disposed within the first mounting slot 111. The rotating shaft 433 passes through the support base 437 in the left-right direction and can rotate relative to the support base 437. The provision of the support base 437 provides greater stability when the rotating shaft 433 rotates left-right within the first mounting slot 111.

[0066] In some embodiments, the double-layer hyperstatic hydraulic support according to embodiments of the present invention further includes a rotating arm 61, a support member 62, a tie rod 63, and an elastic member 64. The rotating arm 61 and the support member 62 are spaced apart along a first direction at the bottom of the expansion member 12. The rotating arm 61 is rotatable relative to the expansion member 12, and the support member 62 is rotatable relative to the expansion member 12. The tie rod 63 connects the rotating arm 61 and the support member 62.

[0067] Specifically, the pull rod 63 extends in the left-right direction. One end of the rotating arm 61 is rotatably connected to the bottom of the expander 12, and the other end of the rotating arm 61 is rotatably connected to the left end of the pull rod 63. One end of the support member 62 is rotatably connected to the bottom of the expander 12, and the right end of the pull rod 63 is rotatably connected to one end of the support member 62.

[0068] The elastic member 64 connects the bottom of the expander 12 and the rotating arm 61. When the expander 12 is located in the first mounting groove 111, the elastic member 64 is in a compressed state. When the expander 12 extends out of the first mounting groove 111, the elastic member 64 resets and pulls the rotating arm 61 to rotate relative to the expander 12. The expander 12 rotates the support member 62 relative to the expander 12 through the pull rod 63.

[0069] Specifically, when the expansion plate is located in the first mounting slot 111, the elastic member 64 is in a compressed state, and the rotating arm 61 is placed in the first mounting slot 111 in the left-right direction. The rotating arm 61 restrains the support member 62 through the pull rod 63, so that the support member 62 is also folded and stored in the first mounting slot 111. As the expansion plate slides out of the first mounting slot 111, the support member 62 remains in a folded state until the rotating arm 61 slides out of the first mounting slot 111. The elasticity of the elastic member 64 resets, causing the other end of the rotating arm 61, which was originally horizontal and connected to the pull rod 63, to swing downward. At this time, the swinging rotating arm 61 pulls the support member 62 to rotate through the pull rod 63, so that the originally horizontal support member 62 is perpendicular to the bottom surface, playing a supporting role.

[0070] In some embodiments, the double-layer hyperstatic hydraulic support of the present invention further includes an adjusting bolt 65 and a foot 66. The adjusting bolt 65 is threadedly engaged with the support member 62, and the foot 66 is provided at the lower end of the adjusting bolt 65. By rotating the adjusting bolt 65, the foot 66 is pressed against the expansion plate on the adjacent base 1, thereby improving the stability of the support member 62.

[0071] In some embodiments, the double-layer hyperstatic hydraulic support of the present invention further includes a top plate 71 and an adjustment assembly 72. The top plate 71 is provided on the top surface of the second support assembly 3. Specifically, the top plate 71 is provided on the top surface of the fourth portion 31.

[0072] The adjusting assembly 72 is arranged between the top plate 71 and the second support assembly 3. The adjusting assembly 72 includes a first connecting frame 721, a second connecting frame 722, an adjusting member 723 and a fifth driving member 724. The first connecting frame 721 is arranged on the top surface of the second support assembly 3 and is movable relative to the second support assembly 3. The second connecting frame 722 is arranged on the first connecting frame 721 and is rotatable relative to the first connecting frame 721. The adjusting member 723 connects the second connecting frame 722 and the bottom surface of the top plate 71. The adjusting member 723 is rotatable relative to the second connecting frame 722 and the top plate 71. The second driving member 52 is connected to the first connecting frame 721.

[0073] Specifically, if Figure 6 As shown, there are three first connecting frames 721, which are rotatably arranged on the top surface of the second portion 22 and are spaced apart in a circle. The first connecting frames 721 are V-shaped, and the V-shaped openings of the three first connecting frames 721 are arranged opposite each other.

[0074] There are three second connecting frames 722, which are arranged in a one-to-one correspondence with the three first connecting frames 721. The second connecting frames 722 are rotatably mounted on the first connecting frames 721. The second connecting frames 722 are V-shaped, and the V-shaped openings of the second connecting frames 722 and the V-shaped openings of the first connecting frames 721 are arranged opposite each other.

[0075] There are six fifth driving members 724, which are divided into three groups. The three groups of fifth driving members 724 correspond to the three first connecting frames 721. Each group of fifth driving members 724 includes two fifth driving members 724, which are respectively connected to the ends of the first connecting frame 721 to drive the first connecting frame 721 to move on the top surface of the fourth portion 31.

[0076] In some embodiments, the double-layer hyperstatic hydraulic support according to embodiments of the present invention further includes three U-shaped seats, each corresponding to the three second connecting frames 722. The U-shaped seats are rotatably mounted on the second connecting frames 722. Three adjusting members 723 are provided, each corresponding to the three U-shaped seats. The adjusting members 723 extend in an up-down direction, with their lower ends rotatably mounted on the U-shaped seats and their upper ends rotatably connected to the bottom surface of the top plate 71.

[0077] The fifth driving member 724 drives the first connecting frame 721 to be offset on the top surface of the fourth part 31. The offset first connecting frame 721 drives the second connecting frame 722 and the adjusting member 723 to be offset, so as to change the angle between the top plate 71 and the top surface of the fourth part 31, so that the top surface can better adapt to the uneven inner wall surface of the tunnel, thereby improving the practicality of the double-layer hyperstatic hydraulic support of the embodiment of the present invention.

[0078] The second driving member 52 drives the first connecting frame 721 to move, the first connecting frame 721 drives the second connecting frame 722 to move, and the second connecting frame 722 drives the adjusting member 723 to move, so as to adjust the angle between the top plate 71 and the top surface of the second supporting assembly 3.

[0079] In some embodiments, the body 11 further has a second mounting groove 112 , and the second mounting groove 112 is located at the bottom of the body 11 .

[0080] The double-layer hyperstatic hydraulic support of an embodiment of the present invention also includes a roller 81 and a sixth driving member 82. The sixth driving member 82 and the roller 81 are arranged in the second mounting groove 112. The sixth driving member 82 and the roller 81 are connected, and the roller 81 is rotatable relative to the sixth driving member 82. The sixth driving member 82 is used to drive the roller 81 to extend out of the second mounting groove 112 or retract into the second mounting groove 112.

[0081] Specifically, the second mounting slot 112 is located in the middle of the bottom of the body 11 and extends in the vertical direction. The sixth drive member 82 is disposed within the second mounting slot 112. The output end of the sixth drive member 82 is connected to the roller 81, which is rotatable relative to the sixth drive member 82. The sixth drive member 82 drives the roller 81 out of the second mounting slot 112, thereby facilitating movement of the double-layer hyperstatic hydraulic support according to the present invention.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] In the present invention, the terms "one embodiment," "some embodiments," "example," "specific example," 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 representations 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 appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0087] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A double-layer hyperstatic hydraulic support, characterized in that: include: A base (1), the base (1) comprising a body (11) and an expansion member (12), the body (11) having a first mounting groove (111), the expansion member (12) being disposed in the first mounting groove (111), and the expansion member (12) being movable in the first mounting groove (111) relative to the body (11); A first supporting assembly (2), the first supporting assembly (2) being arranged above the base (1), and the first supporting assembly (2) being movable in an up-down direction relative to the base (1); a second supporting assembly (3), the second supporting assembly (3) being arranged above the first supporting assembly (2), and the second supporting assembly (3) being movable in the up-down direction relative to the base; A transmission assembly (4), the transmission assembly (4) comprising a rack (41), a first transmission member (42) and a second transmission member (43), the rack (41) connecting the first support assembly (2) and the second support assembly (3), and the rack (41) being movable relative to the first support assembly (2), the first transmission member (42) being provided on the first support assembly (2), and the first transmission member (42) cooperating with the rack (41), the second transmission member (43) being provided in the first mounting groove (111) and connected to at least a portion of the expansion member (12), the second transmission member (43) cooperating with the first transmission member (42), The second supporting assembly (3) moves relative to the base in the up-down direction to drive the rack (41) to move in the up-down direction, thereby driving the expansion member (12) to move in the first installation slot (111) through the first transmission member (42) and the second transmission member (43), so that the expansion member (12) extends out of the first installation slot (111) or retracts into the first installation slot (111); a first driving member (51), the first driving member (51) being arranged between the base (1) and the first supporting assembly (2), the first driving member (51) being used to drive the first supporting assembly (2) to move in the up-down direction; a second driving member (52), the second driving member (52) being provided between the first supporting assembly (2) and the second supporting assembly (3), the second driving member (52) being used for driving the second supporting assembly (3) to move in the up-down direction; The first support assembly (2) comprises: a first portion (21), the first portion (21) extending in a first direction, the first direction being orthogonal to the up-down direction, the first portion (21) having a through hole (211), an end of the rack (41) away from the second supporting assembly (3) passing through the through hole (211), and the first transmission member (42) being provided at the bottom of the first portion (21) and cooperating with the rack (41); a second portion (22), at least a portion of the second portion (22) being connected to the first portion (21), and the second portion (22) being rotatable relative to the first portion (21); A third driving member (23) is provided at the bottom of the first part (21), the third driving member (23) connects the first part (21) and the second part (22), and the third driving member (23) is used to drive the second part (22) to rotate relative to the first part (21).

2. The double-layer hyperstatic hydraulic support according to claim 1, characterized in that: The first supporting assembly (2) further comprises a third part (24) and a fourth driving member (25), wherein the third part (24) is arranged on the second part (22), and the third part (24) is movable relative to the second part (22); the fourth driving member (25) is arranged at the bottom of the second part (22), the fourth driving member (25) connects the second part (22) and the third part (24), and the fourth driving member (25) is used to drive the third part (24) to move relative to the second part (22).

3. The double-layer hyperstatic hydraulic support according to claim 1, characterized in that: The first transmission member (42) comprises: a first gear (421), the first gear (421) being provided on the bottom surface of the first portion (21), the first gear (421) being engaged with the rack (41), the rack (41) being movable in the up-down direction so that the first gear (421) can rotate in a second direction, the second direction being orthogonal to the up-down direction and the first direction; a second gear (422), the second gear (422) being disposed on the bottom surface of the first portion (21), the second gear (422) and the first gear (421) being spaced apart in the second direction, and the first gear (421) being capable of driving the second gear (422) to rotate about the second direction; A transmission roller (423) and a third gear (424), wherein there are two third gears (424), and the two third gears (424) are respectively arranged at the two ends of the transmission roller (423), the transmission roller (423) extends along the up-down direction, and the transmission roller (423) can rotate around the up-down direction relative to the body (11), the third gear (424) located at one end of the transmission roller (423) cooperates with the second gear (422), and the third gear (424) located at the other end of the transmission roller (423) cooperates with the second transmission member (43).

4. The double-layer hyperstatic hydraulic support according to claim 3, characterized in that: The second transmission member (43) comprises: a fourth gear (431), the fourth gear (431) being disposed in the first mounting groove (111), the third gear (424) located at the other end of the transmission roller (423) cooperating with the fourth gear (431), and the transmission roller (423) rotating about the up-down direction can drive the fourth gear (431) to rotate about the first direction; A connecting member (432), wherein the outer wall surface of the connecting member (432) has an external thread, one end of the connecting member (432) is connected to the fourth gear (431), the expansion member (12) has a channel, the inner wall surface of the channel has an internal thread, the other end of the connecting member (432) penetrates into the channel, the outer wall surface of the connecting member (432) is threadedly matched with the inner wall surface of the channel, the expansion member (12) is movable relative to the connecting member (432), and the fourth gear (431) drives the connecting member (432) to rotate around the first direction to drive the expansion member (12) to move along the first direction.

5. The double-layer hyperstatic hydraulic support according to claim 4, characterized in that: The second transmission member (43) further comprises: a rotating shaft (433), one end of the rotating shaft (433) being connected to the fourth gear (431), and the fourth gear (431) driving the rotating shaft (433) to rotate around the first direction; a first pulley (434), wherein the first pulley (434) is provided at the other end of the rotating shaft (433), and the rotating shaft (433) drives the first pulley (434) to rotate around the first direction; a second pulley (435), the second pulley (435) and the first pulley (434) being spaced apart in the second direction, and the second pulley (435) being connected to one end of the connecting member (432); A transmission belt (436) connects the first pulley (434) and the second pulley (435); the first pulley (434) rotates around the first direction to drive the second pulley (435) to rotate around the first direction, thereby causing the connecting member (432) to rotate around the first direction.

6. The double-layer hyperstatic hydraulic support according to any one of claims 1 to 5, characterized in that: Also includes: a rotating arm (61) and a supporting member (62), wherein the rotating arm (61) and the supporting member (62) are arranged at intervals along the first direction at the bottom of the expansion member (12), the rotating arm (61) is rotatable relative to the expansion member (12), and the supporting member (62) is rotatable relative to the expansion member (12); a pull rod (63), wherein the pull rod (63) connects the rotating arm (61) and the supporting member (62); An elastic member (64) is connected to the bottom of the expansion member (12) and the rotating arm (61). When the expansion member (12) is located in the first mounting groove (111), the elastic member (64) is in a compressed state. When the expansion member (12) extends out of the first mounting groove (111), the elastic member (64) is reset and pulls the rotating arm (61) to rotate relative to the expansion member (12). The expansion member (12) causes the support member (62) to rotate relative to the expansion member (12) through the pull rod (63).

7. The double-layer hyperstatic hydraulic support according to any one of claims 1 to 5, characterized in that: Also includes: a top plate (71), the top plate (71) being arranged on the top surface of the second supporting assembly (3); An adjusting assembly (72), wherein the adjusting assembly (72) is arranged between the top plate (71) and the second supporting assembly (3), the adjusting assembly (72) comprises a first connecting frame (721), a second connecting frame (722), an adjusting member (723) and a fifth driving member (724), wherein the first connecting frame (721) is arranged on the top surface of the second supporting assembly (3) and is movable relative to the second supporting assembly (3), the second connecting frame (722) is arranged on the first connecting frame (721) and is rotatable relative to the first connecting frame (721), the adjusting member (723) connects the second connecting frame (722) and the bottom surface of the top plate (71), the adjusting member (723) is rotatable relative to the second connecting frame (722) and the top plate (71), and the second driving member (52) is connected to the first connecting frame (721). The second driving member (52) drives the first connecting frame (721) to move, the first connecting frame (721) drives the second connecting frame (722) to move, and the second connecting frame (722) drives the adjusting member (723) to move, so as to adjust the angle between the top plate (71) and the top surface of the second supporting assembly (3).

8. The double-layered statically indeterminate hydraulic support according to claim 1, characterized in that: The body further comprises a second mounting groove (112), and the second mounting groove (112) is located at the bottom of the body. The double-layer hyperstatic hydraulic support further includes a roller (81) and a sixth driving member (82), wherein the sixth driving member (82) and the roller (81) are arranged in the second mounting groove (112), the sixth driving member (82) and the roller (81) are connected, and the roller (81) is rotatable relative to the sixth driving member (82), and the sixth driving member (82) is used to drive the roller (81) to extend out of the second mounting groove (112) or retract into the second mounting groove (112).

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