Tunnel primary support working platform

Abstract

The tunnel primary support working platform comprises a trolley system, a working platform body and a platform extension system, a rack and a guide groove are arranged in a frame, the working platform body can complete circumferential operation on the two sides and the top of a tunnel, a lifting hydraulic system is started to push and push a lifting rod A and a lifting rod B to rotate, and the lifting platform ascends to meet the height requirement of a working face; when lateral and longitudinal workload is increased, the motor is pushed to rotate to drive the threaded rod to rotate in the spiral hole, meanwhile, the T-shaped steel groove slides along the T-shaped steel, the expansion platform slides laterally, and the device has the advantages of being simple in structure, capable of facilitating operation of high-altitude operation personnel on the platform, safe, reliable, convenient to operate, high in construction efficiency and the like.

Description

Technical Field

[0001] The patent of this invention belongs to the technical field of auxiliary work for high-altitude operations in tunnels, and relates to a tunnel primary support working platform. Background Art

[0002] At present, large working platforms are used for the initial support of concrete in mountain tunnels, and formwork trolleys are used for the secondary lining. Due to the small construction space of the tunnel, the operation of two large equipment not only increases the project cost but also increases the difficulty of construction. In order to carry out the initial support and secondary lining of the tunnel in a scientific and reasonable manner, it is of great significance for construction units to study a construction equipment capable of performing the initial support and secondary lining of the tunnel, especially for the initial support of concrete. Providing a working platform to meet the needs of concrete spraying operations. CN207863973U proposes a rotating platform for a steel formwork trolley, which includes a trough plate, a platform, an inclined support member and a sliding member. The sliding member is located in the double-walled cavity of the trough plate and is connected to the platform and the inclined support member. The platform and the inclined support member rotate around the sliding member. The connecting member on the inner wall of the chute is connected and fixed to the column of the lining formwork trolley, and the platform and the inclined support member can rotate around the chute. This overcomes the problems of inconvenient operation and low working efficiency during the secondary lining operation of the original tunnel concrete.

[0003] In order to solve the above problems, the present invention sets up a trolley frame and sets movable working platforms on both sides and the top of the frame to carry out the initial support operation of the tunnel. The structure is required to be simple, easy to install and disassemble, reduce construction costs and speed up construction progress. Summary of the Invention

[0004] In order to solve the above technical problems, the technical solution adopted by the patent of this invention is: a tunnel primary support working platform, including a tunnel excavation contour line, a tunnel ground line, a trolley system, a working platform, a platform expansion system, a rack, a guide groove, a gear, a drive shaft A, a drive shaft B, a drive shaft C, a motor, a drive shaft bracket, a bevel gear conversion system, a working platform control switch, a level bubble, and an outer leg elevation hydraulic rod switch.

[0005] The trolley system includes outer leg pads, outer leg elevation hydraulic rods, walking tracks, a base, a frame, support columns A, support columns B, a crossbeam, a small crossbeam, a longitudinal beam A, and a longitudinal beam B.

[0006] The working platform includes a base, a base groove, a lifting platform, a lifting platform groove, a lifting control platform, a lifting hydraulic system, a lifting control hydraulic rod, a lifting rod A, a lifting rod B, a connecting hole, a connecting rod A, and a connecting rod B.

[0007] The platform expansion system includes a driving motor A, a threaded rod, a driving motor B, a spiral hole, a T-shaped steel A, a T-shaped steel slot A, a T-shaped steel B, a T-shaped steel slot B, an expansion platform A, an expansion fixed platform A, an expansion platform B, an expansion platform B, and an expansion platform C;

[0008] The bevel gear conversion system includes bevel gear A, bevel gear teeth A, bevel gear B, and bevel gear teeth B;

[0009] Described tunnel is on the ground line, two walking tracks and outer leg pads are longitudinally installed in the tunnel excavation, a base is longitudinally movably installed on the walking track, an outer leg elevation hydraulic rod is installed on the top of the outer leg pad, the base and the top surface of the outer leg elevation hydraulic rod are transversely fixedly connected to the small crossbeam, the top surface of the small crossbeam is fixedly connected to the bottom surface of support column A and support column B, support column B and support column B top surface are fixedly connected to the crossbeam, the lower part of the crossbeam and the junction of support column A are longitudinally fixedly connected to longitudinal beam A, support column B and support column B top surface outer side are longitudinally fixedly connected to longitudinal beam B to form trolley system; a working platform is set between adjacent support columns A and support columns B, and the top surface of the working platform is the platform extension system.

[0010] The cross-section of the support column A is concave, and a rack is vertically arranged on one side of the vertical side of the concave, and a guide groove is vertically arranged on the horizontal side of the concave. The rack is slidably connected to the gear, and the center position of the gear is vertically fixedly connected to the transmission shaft A. The two ends of the transmission shaft A are respectively placed in the guide grooves, and the end of the transmission shaft A is connected to the transmission shaft B. The outer surface of the transmission shaft B is installed with a bevel gear B, and the surface of the bevel gear B is circumferentially provided with bevel gear teeth B. Bevel gear B is symmetrically installed opposite to the bevel gear B. Bevel gear A is arranged in a direction perpendicular to the bevel gear B, and bevel gear teeth A are arranged circumferentially on the surface of the bevel gear A. The bevel gear teeth A and the bevel gear teeth B work together to form vertical rotation, and the end of the bevel gear A is fixedly connected to the transmission shaft C, and the other end of the transmission shaft C is fixedly connected to the motor; two transmission shaft brackets are arranged on the top surface of the transmission shaft A, and the top surface of the transmission shaft bracket is fixedly connected to the platform expansion system, the top of the motor is fixed to the expansion platform C, and the working platform control switch is arranged at the center of the working platform.

[0011] A base groove is provided in the base, two sets of lifting systems are horizontally provided in the base groove, two connecting rods A are longitudinally installed in the base groove, the two connecting rods A are rotatably connected to one end of the lifting rod A and the lifting rod B respectively through connecting holes, the lifting rod A and the lifting rod B are rotatably connected in the middle by the connecting rod B, the other ends of the lifting rod A and the lifting rod B are rotatably connected to the lifting rod B and the lifting rod A in the lifting control platform respectively, the lifting rod B and the lifting rod A are rotatably connected to the lifting rod A and the lifting rod B respectively, and the other ends of the lifting rod A and the lifting rod B are rotatably connected to the connecting rod A in the lifting platform groove through the connecting rod A; in the lifting control platform, the ends of the lifting rod A and the lifting rod B are fixedly connected to the lifting control hydraulic rod, and the other end of the lifting control hydraulic rod is connected to the lifting hydraulic system.

[0012] The platform expansion system consists of three layers from top to bottom, the first layer being the expansion platform A and the expansion fixed platform A, the second layer being the expansion platform B and the expansion platform B, and the third layer being the expansion platform C. An expansion fixed platform A fixed to the expansion platform B is provided at the rear end of the expansion platform A, two pushing motors A are arranged horizontally in the expansion fixed platform A, two spiral holes are arranged in the expansion platform A, the spiral holes work together with the threaded rod, the rear end of the threaded rod is fixedly connected to the pushing motor A, two T-shaped steel slots A are arranged horizontally in the expansion platform A, and T-shaped steel A is arranged horizontally on the top surface of the expansion platform B, and the T-shaped steel slots A work together with the T-shaped steel A; an expansion platform B fixed to the expansion platform C is provided at the front end of the expansion platform B, two pushing motors B are arranged horizontally in the expansion platform B, two spiral holes are arranged in the expansion platform B, the spiral holes work together with the threaded rod, the rear end of the threaded rod is fixedly connected to the pushing motor B, two T-shaped steel slots B are arranged horizontally in the expansion platform B, and T-shaped steel B is arranged horizontally on the top surface of the expansion platform C, and the T-shaped steel slots B work together with the T-shaped steel B.

[0013] The guide groove and the rack are arranged in the support column A, the support column B and the cross beam, wherein the connection between the support column A and the cross beam, and the support column B and the cross beam is arranged in a curved shape and the guide groove and the rack work together.

[0014] A level bubble and an outer leg elevation hydraulic rod switch are provided on the outer side of the bottom end of the support column B. Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides a tunnel primary support working platform. The motor rotates, and the bevel gear A is driven to rotate through the transmission shaft C. The rotation of the bevel gear teeth A drives the bevel gear teeth B to rotate, thereby realizing vertical rotation. The rotation of the bevel gear teeth B drives the transmission shaft A and the transmission shaft B to rotate. The rotation of the transmission shaft A drives the gear to move up and down along the rack. At the same time, the end of the transmission shaft A moves synchronously in the guide groove to play a guiding role. The shaft bracket is installed on the transmission shaft A. The top of the shaft bracket is fixed to the bottom of the working platform. The working platform moves up and down, and the height of the working platform is adjusted at any time according to the height of the working surface. When the gear reaches the top of the support column A and the support column B, since the rack and the guide groove are arcs, the gear moves horizontally along the rack and the guide groove to complete the working operation on the top working surface of the tunnel. The working platform control switch is turned on, and the lifting hydraulic system is started. The lifting hydraulic system is started, and the lifting control is pushed The hydraulic rod moves toward the middle, and the lifting rod A and the lifting rod B rotate along the connecting rod B through the connecting rod B. At the same time, the lifting platform and the lifting control platform rise. When the lifting platform meets the working surface height, the lifting hydraulic system is closed, the working surface work is carried out, and the platform extension system works. When it is necessary to increase the lateral longitudinal workload, the pushing motor is started, and the pushing motor rotates to drive the threaded rod to rotate in the spiral hole. At the same time, the T-steel groove slides along the T-steel, and the expansion platform slides laterally. When the working surface is reached, the pushing motor is turned off to carry out the working surface work; after the work is completed, the pushing motor is turned on, and the pushing motor rotates to drive the threaded rod to rotate in the opposite direction in the spiral hole. At the same time, the T-steel groove slides along the T-steel, and the expansion platform slides laterally to its original position. The patent of this invention has the characteristics of simple structure, convenient operation for high-altitude workers on the platform, safety and reliability, easy operation, and high construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is the main structural view of the patent of this invention.

[0017] Figure 2 This is a side view of the structure of the patent of this invention.

[0018] Figure 3 This is a top view of the structure when the patent of this invention is working sideways.

[0019] Figure 4 This is a top view of the structure when the patented invention is working on the top surface.

[0020] Figure 5 for Figure 3 A partial enlarged view.

[0021] Figure 6 for Figure 4 A partial enlarged view of middle B.

[0022] Figure 7 This is an enlarged view of the working platform.

[0023] Figure 8 Enlargement diagram of platform extension system.

[0024] Figure 9 Work platform and platform extension system diagram

[0025] Figure 10 Platform extension system top view

[0026] Figure 11 Platform extension system side view

[0027] Figure 12 Platform extension system right extension top view

[0028] Figure 13 Platform extension system left extension top view

[0029] In the figure: tunnel excavation contour line 1; tunnel ground line 2; outer leg pad 3; outer leg elevation hydraulic rod 4; walking track 5; base 6; frame 7; support column A 71; support column B 72; cross beam 73; small cross beam 74; longitudinal beam A 75; longitudinal beam B 76; work platform 8; base 81; base groove 811; lifting platform 82; lifting platform groove 821; lifting control platform 83; lifting hydraulic system 84; lifting control hydraulic rod 85; lifting rod A 86; lifting rod B 87; connecting hole 88; connecting rod A 891; connecting rod B 892; platform extension system 9; pushing motor A 91; threaded rod 92; pushing motor B 93; screw hole 94; T-shaped steel A 951; T-shaped steel groove A 952; T-shaped steel B 961; T-shaped steel groove B 962; extension platform A 97; extension fixed platform A 971; extension platform B 98; extension platform B 981; extension platform C 99; rack 10; guide groove 11; gear 12; transmission shaft A 13; transmission shaft B 131; transmission shaft C 14; motor 15; shaft support 16; bevel gear A 17; bevel gear tooth A 171; bevel gear B 18; bevel gear tooth B 181; work platform control switch 19; level bubble 20; outer leg elevation hydraulic rod switch 21. DETAILED DESCRIPTION

[0030] As Figures 1-13 In the figure: tunnel excavation contour line 1; tunnel ground line 2; outer leg pad 3; outer leg elevation hydraulic rod 4; walking track 5; base 6; frame 7; support column A 71; support column B 72; cross beam 73; small cross beam 74; longitudinal beam A 75; longitudinal beam B 76; work platform 8; base 81; base groove 811; lifting platform 82; lifting platform groove 821; lifting control platform 83; lifting hydraulic system 84; lifting control hydraulic rod 85; lifting rod A 86; lifting rod B 87; connecting hole 88; connecting rod A 891; connecting rod B 892; platform extension system 9; pushing motor A 91; threaded rod 92; pushing motor B 93; screw hole 94; T-shaped steel A 951; T-shaped steel groove A 952; T-shaped steel B 961; T-shaped steel groove B 962; extension platform A 97; extension fixed platform A 971; extension platform B 98; extension platform B 981; extension platform C 99; rack 10; guide groove 11; gear 12; transmission shaft A 13; transmission shaft B 131; transmission shaft C 14; motor 15; shaft support 16; bevel gear A 17; bevel gear tooth A 171; bevel gear B 18; bevel gear tooth B 181; work platform control switch 19; level bubble 20; outer leg elevation hydraulic rod switch 21.

[0031] Preferably, the trolley system comprises outer leg pad 3, outer leg height hydraulic rod 4, walking track 5, base 6, frame 7, support column A 71, support column B 72, crossbeam 73, small crossbeam 74, longitudinal beam A 75, longitudinal beam B 76;

[0032] Preferably, the working platform 8 comprises base 81, base groove 811, lifting platform 82, lifting platform groove 821, lifting control platform 83, lifting hydraulic system 84, lifting control hydraulic rod 85, lifting rod A 86, lifting rod B 87, connecting hole 88, connecting rod A 891, connecting rod B 892;

[0033] Preferably, the platform expansion system 9 comprises push motor A 91, threaded rod 92, push motor B 93, screw hole 94, T-shaped steel A 951, T-shaped steel groove A 952, T-shaped steel B 961, T-shaped steel groove B 962, expansion platform A 97, expansion fixed platform A 971, expansion platform B 98, expansion platform B 981, expansion platform C 99;

[0034] Preferably, the bevel gear conversion system comprises bevel gear A 17, bevel gear teeth A 171, bevel gear B 18, bevel gear teeth B 181;

[0035] Preferably, on the tunnel ground line 2, two walking tracks 5 and outer leg pads 3 are installed longitudinally for tunnel excavation, the base 6 is installed longitudinally on the walking track 5, the outer leg height hydraulic rod 4 is installed on the top surface of the outer leg pad 3, the base 6 and the outer leg height hydraulic rod 4 are fixedly connected with the small crossbeam 74 on the top surface, the small crossbeam 74 is fixedly connected with the support column A 71 and the support column B 72 on the bottom surface, the support column B 72 and the support column B 72 are fixedly connected with the crossbeam 73 on the top surface, the crossbeam 73 and the support column A 71 are fixedly connected with the longitudinal beam A 75 longitudinally below the combination, the support column B 72 and the support column B 72 are fixedly connected with the longitudinal beam B 76 longitudinally on the top surface outside, and the trolley system is composed of the above-mentioned components; the working platform 8 is arranged between the adjacent support column A 71 and the support column B 72, and the top surface of the working platform 8 is the platform expansion system 9.

[0036] Preferably, the cross section of the support column A71 is concave-shaped, a rack 10 is vertically arranged on one side of the vertical side of the concave shape, a guide groove 11 is vertically arranged on the horizontal side of the concave shape, the rack 10 is slidably connected to the gear 12, the center position of the gear 12 is vertically fixedly connected to the transmission shaft A13, both ends of the transmission shaft A13 are respectively placed in the guide groove 11, the end of the transmission shaft A13 is connected to the transmission shaft B131, a bevel gear B18 is installed on the outer surface of the transmission shaft B131, the surface of the bevel gear B18 is circumferentially bevel gear teeth B181, the bevel gear B18 is symmetrically installed on the opposite side of the bevel gear B18, and the bevel gear B18 is symmetrically installed on the opposite side of the bevel gear B18. 8 A bevel gear A17 is set in a direction perpendicular to the bevel gear B18, and bevel gear teeth A171 are set circumferentially on the surface of the bevel gear A17. The bevel gear teeth A171 work together with the bevel gear teeth B181 to form a vertical rotation. The end of the bevel gear A17 is fixedly connected to the transmission shaft C14, and the other end of the transmission shaft C14 is fixedly connected to the motor 15; two transmission shaft brackets 16 are set on the top surface of the transmission shaft A13, and the top surface of the transmission shaft bracket 16 is fixedly connected to the platform extension system 9. The top of the motor 15 is fixed to the extension platform C99, and the working platform control switch 19 is set at the center of the working platform 8.

[0037] Preferably, a base groove 811 is provided in the base 81, two sets of lifting systems are horizontally provided in the base groove 811, and two connecting rods A891 are longitudinally installed in the base groove 811. The two connecting rods A891 are rotatably connected to one end of the lifting rod A86 and the lifting rod B87 respectively through the connecting hole 88, and the lifting rod A86 and the lifting rod B87 are rotatably connected in the middle by the connecting rod B892. The other ends of the lifting rod A86 and the lifting rod B87 are rotatably connected to the lifting rod B87 and the lifting rod A86 in the lifting control platform 83 respectively, and the lifting rod B87 and the lifting rod A86 are rotatably connected to the lifting rod A86 and the lifting rod B87 respectively. The other ends of the lifting rod A86 and the lifting rod B87 are rotatably connected to the connecting rod A891 in the lifting platform groove 821 through the connecting rod A891; in the lifting control platform 83, the ends of the lifting rod A86 and the lifting rod B87 are fixedly connected to the lifting control hydraulic rod 85, and the other end of the lifting control hydraulic rod 85 is connected to the lifting hydraulic system 84.

[0038] Preferably, the platform expansion system 9 is composed of three layers from top to bottom, the first layer is the expansion platform A97 and the expansion fixed platform A971, the second layer is the expansion platform B98 and the expansion platform B981, and the third layer is the expansion platform C99. An expansion fixed platform A971 fixed to the expansion platform B98 is set at the rear end of the expansion platform A97, two push motors A91 are set horizontally in the expansion fixed platform A971, two spiral holes 94 are set in the expansion platform A97, the spiral holes 94 work together with the threaded rod 92, the rear end of the threaded rod 92 is fixedly connected to the push motor A91, two T-shaped steel grooves A952 are set horizontally in the expansion platform A97, and the expansion fixed platform A97 is fixed to the expansion fixed platform B98. A T-shaped steel A951 is horizontally arranged on the top surface of the expansion platform B98, and the T-shaped steel groove A952 works together with the T-shaped steel A951; an expansion platform B981 fixed to the expansion platform C99 is arranged at the front end of the expansion platform B98, two pushing motors B93 are horizontally arranged in the expansion platform B981, two spiral holes 94 are arranged in the expansion platform B98, the spiral holes 94 work together with the threaded rod 92, and the rear end of the threaded rod 92 is fixedly connected to the pushing motor B93, two T-shaped steel grooves B962 are horizontally arranged in the expansion platform B98, and a T-shaped steel B961 is horizontally arranged on the top surface of the expansion platform C99, and the T-shaped steel groove B962 works together with the T-shaped steel B961.

[0039] Preferably, the guide groove 11 and the rack 10 are arranged in the support column A71, the support column B72 and the crossbeam 73, wherein the connection between the support column A71 and the crossbeam 73, and the support column B72 and the crossbeam 73 is set to a curved shape and the guide groove 11 and the rack 10 work together.

[0040] Preferably, a level bubble 20 and an outer leg elevation hydraulic rod switch 21 are vertically arranged on the outer side of the bottom end of the support column B72. How it works

[0041] Assemble the equipment on the tunnel ground line 2, mark the positions of the walking track 5 and the outer leg pad 3 on the ground according to the equipment size, and install two walking tracks 5 and outer leg pads 3 longitudinally, install the base 6 on the top surface of the walking track 5, install the outer leg elevation hydraulic rod 4 on the top surface of the outer leg pad 3, install a small crossbeam 74 between the outer leg elevation hydraulic rod 4 and the base 6, install support columns A71 and support columns B72 on the corresponding positions of the small crossbeam 74, fix the crossbeam 73 on the top surfaces of support columns A71 and support columns B72, and then install longitudinal beams A75 and B76 longitudinally to complete the installation of the trolley system. According to the level bubble 20, ensure that the trolley system is in a horizontal state by adjusting the outer leg elevation hydraulic rod 4; at the same time, install the working platform 8 and the platform extension system 9 between the adjacent support columns A and support columns B.

[0042] Start the working platform control switch 19, the motor 15 rotates, and drives the bevel gear A17 to rotate through the transmission shaft C14. The rotation of the bevel gear teeth A171 drives the bevel gear teeth B181 to rotate, realizing vertical rotation. The rotation of the bevel gear teeth B181 drives the transmission shaft A13 and the transmission shaft B131 to rotate. The rotation of the transmission shaft A13 drives the gear 12 to move up and down along the rack 10. At the same time, the end of the transmission shaft A13 moves synchronously in the guide groove 11 to play a guiding role. The shaft bracket 16 is installed on the transmission shaft A13. The top of the shaft bracket 16 is fixed to the bottom of the working platform 8. The working platform 8 moves up and down. The height of the working platform 8 is adjusted at any time according to the height of the working surface to complete the working surface operation on the left side of the tunnel.

[0043] When the gear 12 reaches the top of the support column A71 and the support column B72, since the rack 10 and the guide groove 11 are arcs, the gear 12 moves horizontally along the rack 10 and the guide groove 11, and the working platform 8 moves horizontally at the same time to complete the tunnel top working surface operation.

[0044] When the gear 12 reaches the top of the support column A71 and the support column B72, since the rack 10 and the guide groove 11 are arcs, the gear 12 moves vertically along the rack 10 and the guide groove 11, and the working platform 8 moves up and down. The height of the working platform 8 is adjusted at any time according to the height of the working surface to complete the work on the right side of the tunnel.

[0045] When working on the top working surface of the tunnel, when it is necessary to raise the height of the working platform 8, turn on the working platform control switch 19, start the lifting hydraulic system 84, and the lifting hydraulic system 84 starts, pushing the lifting control hydraulic rod 85 to move toward the middle. The lifting rod A86 and the lifting rod B87 rotate along the connecting rod B892 through the connecting rod B892. At the same time, the lifting platform 82 and the lifting control platform 83 rise. When the lifting platform 82 meets the working surface height, the lifting hydraulic system 84 is turned off and the working surface operation on the top of the tunnel is carried out.

[0046] When it is necessary to expand the longitudinal construction working surface on both sides and the top of the tunnel, the platform expansion system needs to be turned on. When it is necessary to increase the left working surface, the pushing motor A91 is started. The pushing motor A91 rotates to drive the threaded rod 92 to rotate in the spiral hole 94. At the same time, the T-steel groove A952 slides along the T-steel A951, and the expansion platform A97 slides to the left. When the working surface meets the construction requirements, the pushing motor A91 is turned off and the working surface operation is carried out; after the operation is completed, the pushing motor A9 is turned on. The pushing motor A91 rotates to drive the threaded rod 92 to rotate in the opposite direction in the spiral hole 94. At the same time, the T-steel groove A952 slides along the T-steel A951, and the expansion platform A97 slides to the right to its original position.

[0047] When it is necessary to expand the longitudinal construction working surface on both sides and the top of the tunnel, it is necessary to turn on the platform extension system. When it is necessary to increase the right working surface, start the pushing motor B93. The pushing motor B93 rotates to drive the threaded rod 92 to rotate in the spiral hole 94. At the same time, the T-steel groove B962 slides along the T-steel B961, and the expansion platform A97 and the expansion platform B98 slide to the left. When the working surface meets the requirements, turn off the pushing motor B93 and carry out the working surface operation. After the operation is completed, turn on the pushing motor B93. The pushing motor B93 rotates to drive the threaded rod 92 to rotate in the opposite direction in the spiral hole 94. At the same time, the T-steel groove B962 slides along the T-steel B961, and the expansion platform A97 and the expansion platform B98 slide to the left to their original position.

[0048] The above work completes the construction work on both sides and the top of the tunnel. As the tunnel is excavated and drilled, the tunnel primary support work platform gradually moves forward along the walking track 5. When it reaches the next working surface, the trolley system is kept in a horizontal state by adjusting the outer leg elevation hydraulic rod 4 according to the level bubble 20, and construction work is carried out on both sides and the top of the tunnel.

[0049] In the description of the embodiments of the present disclosure, it should be understood that the terms "longitudinal", "lateral", "length", "height", "up", "down", "front", "back", "left", "right", "vertical", "longitudinal", "lateral", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and do not indicate or imply that the structure or device referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present disclosure.

[0050] The above embodiments are only preferred technical solutions of the present invention and should not be considered as limitations of the present invention. The embodiments and features in the embodiments of this application may be combined arbitrarily unless they conflict. The scope of protection of the present invention shall be the technical solutions described in the claims, including equivalent replacement solutions of the technical features in the technical solutions described in the claims. In other words, equivalent replacement improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A tunnel primary support working platform, characterized in that: It includes a tunnel excavation contour line (1), a tunnel ground line (2), a trolley system, a working platform (8), a platform expansion system (9), a rack (10), a guide groove (11), a gear (12), a transmission shaft A (13), a transmission shaft B (131), a transmission shaft C (14), a motor (15), a transmission shaft bracket (16), a bevel gear conversion system, a working platform control switch (19), a level bubble (20), and an outer leg elevation hydraulic lever switch (21); The trolley system comprises an outer leg pad (3), an outer leg elevation hydraulic rod (4), a walking track (5), a base (6), a frame (7), a support column A (71), a support column B (72), a crossbeam (73), a small crossbeam (74), a longitudinal beam A (75), and a longitudinal beam B (76); The working platform (8) comprises a base (81), a base groove (811), a lifting platform (82), a lifting platform groove (821), a lifting control platform (83), a lifting hydraulic system (84), a lifting control hydraulic rod (85), a lifting rod A (86), a lifting rod B (87), a connecting hole (88), a connecting rod A (891), and a connecting rod B (892); The platform expansion system (9) includes a driving motor A (91), a threaded rod (92), a driving motor B (93), a spiral hole (94), a T-shaped steel A (951), a T-shaped steel groove A (952), a T-shaped steel B (961), a T-shaped steel groove B (962), an expansion platform A (97), an expansion fixed platform A (971), an expansion platform B (98), an expansion platform B (981), and an expansion platform C (99); The bevel gear conversion system includes a bevel gear A (17), bevel gear teeth A (171), a bevel gear B (18), and bevel gear teeth B (181); On the tunnel ground line (2), two walking rails (5) and outer leg pads (3) are longitudinally installed in the tunnel excavation, a base (6) is longitudinally movably installed on the walking rail (5), an outer leg elevation hydraulic rod (4) is installed on the top surface of the outer leg pad (3), the base (6) and the top surface of the outer leg elevation hydraulic rod (4) are transversely fixedly connected to the small crossbeam (74), the top surface of the small crossbeam (74) is fixedly connected to the bottom surface of the support column A (71) and the support column B (72), and the support column A (71) and the support column B (72) are fixedly connected to the bottom surface of the support column A (71) and the support column B (72). The column B (72) and the top surface of the support column B (72) are fixedly connected to the crossbeam (73); the lower portion of the crossbeam (73) and the joint portion of the support column A (71) are longitudinally fixedly connected to the longitudinal beam A (75); the support column B (72) and the outer side of the top surface of the support column B (72) are longitudinally fixedly connected to the longitudinal beam B (76) to form a trolley system; a working platform (8) is set between adjacent support columns A (71) and support columns B (72); the top surface of the working platform (8) is a platform expansion system (9).

2. A tunnel primary support working platform according to claim 1, characterized in that: The support column A (71) has a concave cross section, a rack (10) is vertically arranged on one side of the concave vertical side, and a guide groove (11) is vertically arranged on the concave horizontal side. The rack (10) is slidably connected to the gear (12), and the center position of the gear (12) is vertically fixedly connected to the transmission shaft A (13). The two ends of the transmission shaft A (13) are respectively placed in the guide groove (11). The end of the transmission shaft A (13) is connected to the transmission shaft B (131). The outer surface of the transmission shaft B (131) is equipped with a bevel gear B (18). The circumferential surface of the bevel gear B (18) is bevel gear teeth B (181). The bevel gear B (18) is symmetrically installed on the opposite side of the bevel gear B (18). The bevel gear B (18) and the bevel gear B (18) are respectively arranged on the opposite side. A bevel gear A (17) is arranged vertically on the bevel gear B (18), and bevel gear teeth A (171) are arranged circumferentially on the surface of the bevel gear A (17). The bevel gear teeth A (171) and the bevel gear teeth B (181) work together to form a vertical rotation. The end of the bevel gear A (17) is fixedly connected to the transmission shaft C (14), and the other end of the transmission shaft C (14) is fixedly connected to the motor (15). Two transmission shaft brackets (16) are arranged on the top surface of the transmission shaft A (13), and the top surface of the transmission shaft bracket (16) is fixedly connected to the platform expansion system (9). The top of the motor (15) is fixed to the expansion platform C (99), and a working platform control switch (19) is arranged at the center position of the working platform (8).

3. A tunnel primary support working platform according to claim 1, characterized in that: The base (81) is provided with a base groove (811), two sets of lifting systems are transversely provided in the base groove (811), two connecting rods A (891) are longitudinally installed in the base groove (811), the two connecting rods A (891) are rotatably connected to one end of the lifting rod A (86) and the lifting rod B (87) through the connecting hole (88), the lifting rod A (86) and the lifting rod B (87) are rotatably connected in the middle through the connecting rod B (892), and the other ends of the lifting rod A (86) and the lifting rod B (87) are respectively connected to the lifting rod B (892) in the lifting control platform (83). The lifting rod A (87) and the lifting rod A (86) are rotatably connected, the lifting rod B (87) and the lifting rod A (86) are rotatably connected to the lifting rod A (86) and the lifting rod B (87) respectively, and the other ends of the lifting rod A (86) and the lifting rod B (87) are rotatably connected to the connecting rod A (891) in the lifting platform groove (821) through the connecting rod A (891); in the lifting control platform (83), the ends of the lifting rod A (86) and the lifting rod B (87) are fixedly connected to the lifting control hydraulic rod (85), and the other end of the lifting control hydraulic rod (85) is connected to the lifting hydraulic system (84).

4. A tunnel primary support working platform according to claim 1, characterized in that: The platform expansion system (9) is composed of three layers from top to bottom, wherein the first layer is an expansion platform A (97) and an expansion fixed platform A (971), the second layer is an expansion platform B (98) and an expansion platform B (981), and the third layer is an expansion platform C (99). An expansion fixed platform A (971) fixed to the expansion platform B (98) is provided at the rear end of the expansion platform A (97), two propulsion motors A (91) are provided transversely in the expansion fixed platform A (971), two spiral holes (94) are provided in the expansion platform A (97), the spiral holes (94) cooperate with the threaded rod (92), the rear end of the threaded rod (92) is fixedly connected to the propulsion motor A (91), two T-shaped steel slots A (952) are provided transversely in the expansion platform A (97), and two T-shaped steel slots A (952) are provided transversely in the expansion platform B (97). (98) A T-shaped steel A (951) is horizontally arranged on the top surface, and the T-shaped steel groove A (952) works in coordination with the T-shaped steel A (951); an expansion platform B (981) fixed to the expansion platform C (99) is arranged at the front end of the expansion platform B (98), two driving motors B (93) are horizontally arranged in the expansion platform B (981), two spiral holes (94) are arranged in the expansion platform B (98), the spiral holes (94) work in coordination with the threaded rod (92), the rear end of the threaded rod (92) is fixedly connected to the driving motor B (93), two T-shaped steel grooves B (962) are horizontally arranged in the expansion platform B (98), and a T-shaped steel B (961) is horizontally arranged on the top surface of the expansion platform C (99), and the T-shaped steel groove B (962) works in coordination with the T-shaped steel B (961).

5. The tunnel primary support working platform according to claim 1, characterized in that: The guide groove (11) and the rack (10) are arranged in the support column A (71), the support column B (72) and the crossbeam (73), wherein the connection between the support column A (71) and the crossbeam (73), and the connection between the support column B (72) and the crossbeam (73) are arranged in a curved shape, and the guide groove (11) and the rack (10) work in coordination.

6. The tunnel primary support working platform according to claim 1, characterized in that: A level bubble (20) and an outer leg elevation hydraulic lever switch (21) are provided on the outer side of the bottom end of the support column B (72).

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