A box-type hydraulic trestle for tunnel invert construction

Abstract

The present invention relates to the technical field of hydraulic trestles, and discloses a box-type hydraulic trestles for tunnel inverted arch construction, comprising: a main beam plate, two groups of walking legs and four inclined plate frames, the four inclined plate frames are respectively rotatably installed at the four corners of the main beam plate, and two groups of walking legs are symmetrically installed at the bottom of the main beam plate; the walking legs include a driving source installed at the bottom of the main beam plate, the driving end of the driving source is provided with a vertical leg assembly, and the movable end at the bottom of the vertical leg assembly is rotatably installed with a pressure plate. The box-type hydraulic trestles for tunnel inverted arch construction can realize the lateral movement of the trestles along the direction of the main beam plate by continuously driving the rotation of the vertical leg assembly by the driving source. When realizing the movement in the direction of the main beam plate, no guide rail is required for assistance, and the main beam plate can be driven and moved by the walking legs installed at its bottom, which reduces the tediousness of the trestles when they are moving by themselves, and is convenient for quickly adjusting the position of the trestles. The modular design is convenient for disassembly, assembly, maintenance and replacement of the walking legs.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic trestle bridges, in particular to a box-type hydraulic trestle bridge for tunnel invert construction. Background Art

[0002] Hydraulic trestle is a device that uses the principle of hydraulic transmission to achieve the lifting and movement of bridges. It is widely used in temporary bridges, military bridges, rescue bridges, docks, stations and various engineering construction fields.

[0003] With regard to the existing related technologies, it is believed that the following defects often exist: some of the hydraulic trestles currently on the market do not have the function of self-propelled movement, while others have the function of self-propelled movement. Some of the hydraulic trestles with the function of self-propelled movement use a guide rail to guide them forward. When the hydraulic trestles are moved, it is necessary to lay the guide rails first and remove the unused guide rails at the tail end. The self-propelled movement process of the trestles is relatively cumbersome and inconvenient to use, and the guide rails must be accurately connected to ensure the smooth movement of the hydraulic trestles. Summary of the invention

[0004] The object of the present invention is to provide a box-type hydraulic trestle for tunnel invert construction to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A box-type hydraulic trestle for tunnel invert construction, comprising: a main beam plate, two groups of walking legs and four inclined plate frames, wherein the four inclined plate frames are rotatably mounted at the four corners of the main beam plate, and the two groups of walking legs are symmetrically mounted at the bottom of the main beam plate;

[0007] The walking leg includes a driving source installed at the bottom of the main beam, and the driving end of the driving source is provided with a vertical leg assembly. The movable end at the bottom of the vertical leg assembly is rotatably installed with a pressure plate. When the main beam needs to move to the left, the driving source drives the vertical leg assembly to rotate counterclockwise, and the vertical leg assembly drives the pressure plate to move toward the ground, and under the interference between the pressure plate and the ground, the main beam is moved to the left. When the main beam needs to move to the right, the vertical leg assembly is driven to rotate clockwise.

[0008] As an improved technical solution, side connecting protrusions are welded at the middle parts of both sides of the main beam plate, a rotating shaft is rotatably installed at the lateral end of the top of the inclined plate frame through a bearing, and the rotating shaft is fixed on the side connecting protrusions, a connecting groove is opened at the lateral end of the top of the inclined plate frame and on the side close to the main beam plate, a fixed connecting plate is fixed to the connecting groove by bolts, fixed grooves are opened at the four corners of the top of the main beam plate, and the fixed connecting plate is detachably installed in the fixing groove by bolts on the side away from the inclined plate frame.

[0009] As an improved technical solution, the walking leg includes a motor frame installed at the bottom of the main beam plate, and two fixed connecting frames installed at the bottom of the main beam plate, a vertical bar is fixed between the opposite surfaces of the two fixed connecting frames, and the two ends of the front side of the fixed connecting frames are respectively rotatably installed with a driving main shaft and a driving auxiliary shaft, a rotating plate is fixed on the end of the driving main shaft and the driving auxiliary shaft away from the vertical bar, a linkage shaft is rotatably installed on the end of the rotating plate away from the driving auxiliary shaft through a bearing, and the linkage shaft is rotatably connected to the vertical leg assembly, a driving motor for driving the driving main shaft to rotate is fixedly installed inside the installation cavity of the motor frame, and the driving end of the driving motor is connected to the driving main shaft.

[0010] As an improved technical solution, the vertical leg assembly includes a vertical connecting plate, a leg seat and three connecting plate fixings, and the vertical connecting plate and the leg seat are fixed by the three connecting plate fixings. Both ends of the motor frame are provided with axial holes, and the axial holes rotate with the linkage shaft through the bearings installed inside, and the pressure plate is rotatably installed at the bottom end of the leg seat.

[0011] As an improved technical solution, a hydraulic cylinder and a hydraulic oil tank are respectively installed on both sides of the top of the leg base, the output end of the hydraulic oil tank is fixedly connected to the input end of the hydraulic pump, and the output end of the hydraulic pump is connected to the input end of the hydraulic cylinder, and vertical holes for the movable end of the hydraulic cylinder to pass through are opened on both sides of the bottom of the leg base.

[0012] As an improved technical solution, a U-shaped frame is installed at the movable end of the hydraulic cylinder, and hole blocks are installed on both sides of the top of the pressure plate. The top of the hole block on the same side is located inside the concave cavity of the U-shaped frame on the same side, and the hole block on the same side is rotatably connected to the U-shaped frame through a rotating shaft.

[0013] As an improved technical solution, magnetic suction cavities connected to the vertical holes are provided on both sides of the front side of the leg seat, a magnetic adsorption component is installed inside the magnetic suction cavity, the magnetic adsorption component includes a fixed connecting block installed inside the magnetic adsorption component by bolts, an arc-shaped electromagnet is installed on one end face of the fixed connecting block close to the hydraulic cylinder, an arc-shaped groove is provided at the movable end of the hydraulic cylinder and close to the side of the arc-shaped electromagnet, an arc-shaped iron block is fixed inside the arc-shaped groove by bolts, and a fastening groove is provided at the movable end of the hydraulic cylinder and above the arc-shaped groove.

[0014] As an improved technical solution, a row of T-shaped cavities are provided at the bottom of the pressure plate, T-shaped blocks are slidably arranged inside the T-shaped cavities, and a group of springs are installed between the top of the inner wall of the T-shaped cavity and the top of the T-shaped block.

[0015] As an improved technical solution, the connecting plate fixing member includes two side connecting plates, both ends of the side connecting plates are provided with T-shaped holes, T-shaped rods are inserted inside the T-shaped holes, and the T-shaped rods are threadedly installed with hexagon socket bolts through threaded holes opened at one end of the T-shaped rods.

[0016] As an improved technical solution, three rod holes 1 for T-shaped rods to pass through are opened on one side of the vertical connecting plate, and plate grooves 1 connected to the rod hole 1 are opened on both sides of the vertical connecting plate and at positions directly opposite to the two ends of the rod hole 1; three rod holes 2 for T-shaped rods to pass through are opened on one side of the leg seat, and plate grooves 2 connected to the rod hole 2 are opened on both sides of the leg seat and at positions directly opposite to the two ends of the rod hole 2.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The invention can realize the trestle bridge to move laterally along the direction of the main beam plate by continuously driving the vertical leg assembly with a driving source. When the main beam plate is moved in the direction of the main beam plate, no guide rail is required for assistance. The main beam plate can be driven and moved by the walking legs installed at the bottom thereof, which reduces the cumbersomeness of the trestle bridge when it is walking by itself, is convenient for quickly adjusting the position of the trestle bridge, and adopts a modular design, which is convenient for disassembly, assembly, maintenance and replacement of the walking legs. Since the vertical leg assembly and the linkage shaft are in a state of rotational connection when the vertical leg assembly is driven to rotate, under the action of the vertical leg assembly's own gravity, the vertical leg assembly can be ensured to be in a state of always being in a vertical downward state. At the same time, the vertical leg assembly is driven to rotate by the upper rotating plate, and the lower rotating plate further positions and limits the vertical leg assembly, which can improve the stability of the vertical leg assembly when rotating. The vertical connecting plate and the leg seat are detachably connected by the connecting plate fixing piece, so that the driving source and the supporting walking end are detachably connected, which is convenient for disassembly, maintenance or replacement. The movable end of the hydraulic cylinder is reinforced by an arc-shaped electromagnet to further ensure its stability when the hydraulic cylinder does not need to be extended or retracted, and the arc-shaped iron block and the arc-shaped electromagnet are arranged on the long surface, so the movable end of the hydraulic cylinder can be effectively fixed even if the arc-shaped iron block and the arc-shaped electromagnet are offset by a certain position; when the pressure plate contacts the ground, if there is a hard object on the ground, when the hard object contacts the bottom of the pressure plate, the hard object will be pressed down first, and on the other hand, under the resistance of the hard object, under the rotation connection of the U-shaped frame and the hole block, the pressure plate will also rotate at a certain angle, which is conducive to increasing the contact area between the pressure plate and the ground and improving the stability of touching the ground. If the size of the hard object is smaller than the diameter of the T-shaped cavity and is just located below the T-shaped cavity, on the one hand, the hard object will be pressed down to the ground, and on the other hand, the hard object will also resist the T-shaped block to move downward and move the inside of the spring, so that one end of the hard object enters the inner cavity of the T-shaped cavity for temporary storage, so as to reduce the influence of the hard object on the ground on the pressure plate and ensure that the pressure plate is in a horizontal state as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a box-type hydraulic trestle for tunnel invert construction;

[0020] Figure 2 It is a structural schematic diagram of the walking legs in a box-type hydraulic trestle for tunnel invert construction;

[0021] Figure 3 It is a structural schematic diagram of a driving source in a box-type hydraulic trestle for tunnel invert construction;

[0022] Figure 4 It is a schematic diagram of the explosion structure of the vertical leg assembly in a box-type hydraulic trestle for tunnel invert construction;

[0023] Figure 5 It is a schematic diagram of the explosion structure of the connecting plate fixing parts in a box-type hydraulic trestle for tunnel invert construction;

[0024] Figure 6 It is a structural schematic diagram of a middle leg seat of a box-type hydraulic trestle for tunnel invert construction;

[0025] Figure 7 It is a schematic diagram of the internal structure of a vertical hole in a box-type hydraulic trestle for tunnel invert construction;

[0026] Figure 8 It is a schematic diagram of the explosion structure of a magnetic adsorption component in a box-type hydraulic trestle for tunnel invert construction;

[0027] Fig. 9 The schematic diagram of the structure is a middle pressure plate of a box-type hydraulic trestle for tunnel invert construction.

[0028] In the figure: 1, main beam plate; 11, side connecting protrusion; 12, fixing groove; 2, walking leg; 21, driving source; 211, motor frame; 212, driving motor; 213, fixing connecting frame; 214, vertical bar; 215, driving main shaft; 216, driving auxiliary shaft; 217, rotating plate; 218, linkage shaft; 22, vertical leg assembly; 221, vertical connecting plate; 222, plate groove 1; 223, rod hole 1; 224, shaft hole; 225, connecting plate fixing piece; 2251, side connecting plate; 2252, T-hole; 2253, T-rod; 2254, hexagon socket bolt; 226, leg seat; 22 61. Plate groove 2; 2262. Hydraulic cylinder; 22621. Arc groove; 22622. Fastening groove; 2263. Hydraulic pump; 2264. Hydraulic oil tank; 2265. Rod hole 2; 2266. Magnetic suction cavity; 2267. Magnetic adsorption part; 22671. Arc iron block; 22672. Arc electromagnet; 22673. Fixed connecting block; 2268. U-shaped frame; 2269. Vertical hole; 23. Press plate; 231. Hole block; 232. T-shaped cavity; 233. T-shaped block; 234. Spring; 3. Inclined plate frame; 31. Rotating shaft; 32. Fixed connecting plate; 33. Connecting groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figures 1 to 9 The present invention proposes a technical solution, a tunnel invert construction box-type hydraulic trestle, comprising: a main beam plate 1, two groups of walking legs 2 and four inclined plate frames 3, the four inclined plate frames 3 are rotatably installed at the four corners of the main beam plate 1, and the two groups of walking legs 2 are symmetrically installed at the bottom of the main beam plate 1. When the main beam plate 1 and the inclined plate frames 3 are fixed, the inclined plate frames 3 on both sides are unfolded outward to form a trestle platform for use;

[0031] The walking leg 2 includes a driving source 21 installed at the bottom of the main beam 1, and a vertical leg assembly 22 is provided at the driving end of the driving source 21. A pressing plate 23 is rotatably installed at the movable end at the bottom of the vertical leg assembly 22. When the main beam 1 needs to move to the left, the driving source 21 drives the vertical leg assembly 22 to rotate counterclockwise, and the vertical leg assembly 22 drives the pressing plate 23 to move toward the ground, and under the interference between the pressing plate 23 and the ground, the main beam 1 is moved to the left. When the main beam 1 needs to move to the right, the vertical leg assembly 22 is driven to rotate clockwise.

[0032] By continuously driving the rotation of the vertical leg assembly 22 through the driving source 21, the trestle can be moved laterally along the direction of the main beam 1. When moving the main beam 1, there is no need for the assistance of guide rails. The main beam 1 can be driven and moved by the walking legs 2 installed at the bottom thereof, which reduces the complexity of the trestle's self-movement and facilitates the rapid adjustment of the position of the trestle. The modular design facilitates the disassembly, maintenance and replacement of the walking legs 2.

[0033] The cam 31 is provided with a plurality of cams 32 on the top of the sloping plate frame 3, and the cam 31 is provided with a plurality of cams 33 on the top of the sloping plate frame 3.

[0034] The walking leg 2 includes a motor frame 211 installed at the bottom of the main beam plate 1, and two fixed connecting frames 213 installed at the bottom of the main beam plate 1, a vertical bar 214 is fixed between the opposite surfaces of the two fixed connecting frames 213, and the top of the vertical bar 214 is fixed to the motor frame 211 through a connecting plate, and the two ends of the front of the fixed connecting frame 213 are respectively rotatably installed with a driving main shaft 215 and a driving auxiliary shaft 216, and a rotating plate 217 is fixed to the end of the driving main shaft 215 and the driving auxiliary shaft 216 away from the vertical bar 214, and the rotating plate 217 is away from the driving main shaft 215 and the driving auxiliary shaft 216. A linkage shaft 218 is rotatably installed at one end of the dynamic auxiliary shaft 216 through a bearing, and the linkage shaft 218 is rotatably linked to the vertical leg assembly 22. The vertical leg assembly 22 is driven to rotate by the upper rotating plate 217, and the lower rotating plate 217 further positions and limits the vertical leg assembly 22, which can improve the stability of the vertical leg assembly 22 during rotation. A driving motor 212 for driving the driving main shaft 215 to rotate is fixedly installed inside the installation cavity of the motor frame 211, and the driving end of the driving motor 212 is connected to the driving main shaft 215.

[0035] The process of the driving source 21 driving the vertical leg assembly 22 to rotate is as follows:

[0036] The driving motor 212 drives the driving main shaft 215 to rotate, and the driving main shaft 215 drives the upper rotating plate 217 to rotate, and under the rotational connection between the linkage shaft 218 and the vertical leg assembly 22, the vertical leg assembly 22 is driven to rotate. Since the vertical leg assembly 22 and the linkage shaft 218 are in a state of rotational connection, when the vertical leg assembly 22 is driven to rotate, under the action of its own gravity, the vertical leg assembly 22 can be ensured to be in a vertical downward state at all times.

[0037] The vertical leg assembly 22 includes a vertical connecting plate 221, a leg seat 226 and three connecting plate fixings 225, and the vertical connecting plate 221 and the leg seat 226 are fixed by the three connecting plate fixings 225. Both ends of the motor frame 211 are provided with shaft holes 224, and the shaft holes 224 rotate with the linkage shaft 218 through the bearings installed therein, and the pressure plate 23 is rotatably installed at the bottom end of the leg seat 226.

[0038] A hydraulic cylinder 2262 and a hydraulic oil tank 2264 are installed on both sides of the top of the leg seat 226 respectively. The output end of the hydraulic oil tank 2264 is fixedly connected to the input end of the hydraulic pump 2263, and the output end of the hydraulic pump 2263 is connected to the input end of the hydraulic cylinder 2262. Vertical holes 2269 are opened on both sides of the bottom of the leg seat 226 for the movable end of the hydraulic cylinder 2262 to pass through.

[0039] A U-shaped frame 2268 is installed at the movable end of the hydraulic cylinder 2262, and hole blocks 231 are installed on both sides of the top of the pressure plate 23. The top of the hole block 231 on the same side is located inside the concave cavity of the U-shaped frame 2268 on the same side, and the hole block 231 on the same side is rotatably connected to the U-shaped frame 2268 through a rotating shaft. When the pressure plate 23 contacts the ground, if there is a hard object on the ground, when the hard object contacts the bottom of the pressure plate 23, the hard object will be pressed down first. On the other hand, under the resistance of the hard object and the rotational connection between the U-shaped frame 2268 and the hole block 231, the pressure plate 23 will also rotate at a certain angle, which is beneficial to increase the contact area between the pressure plate 23 and the ground and improve the stability of the ground contact.

[0040] Both sides of the front side of the leg seat 226 are provided with magnetic suction chambers 2266 connected with the vertical holes 2269, and a magnetic adsorption member 2267 is installed inside the magnetic adsorption chamber 2266. The magnetic adsorption member 2267 includes a fixed connecting block 22673 installed inside the magnetic adsorption member 2267 by bolts, and an arc-shaped electromagnet 22672 is installed on one end face of the fixed connecting block 22673 close to the hydraulic cylinder 2262. An arc-shaped groove 22621 is provided at the movable end of the hydraulic cylinder 2262 and close to the side of the arc-shaped electromagnet 22672. An arc-shaped iron block 22671 is fixed inside the arc-shaped groove 22621 by bolts, and a fastening groove 22622 is provided at the movable end of the hydraulic cylinder 2262 and located above the arc-shaped groove 22621. The hydraulic pump 2263 pumps the hydraulic oil in the hydraulic oil tank 2264 into the interior of the hydraulic cylinder 2262, so that the hydraulic cylinder 2262 drives the pressure plate 23 to move downward. When the telescopic end of the hydraulic cylinder 2262 is active, the arc-shaped electromagnet 22672 is opened and magnetically adsorbed with the arc-shaped iron block 22671. The active end of the hydraulic cylinder 2262 is reinforced by the arc-shaped electromagnet 22672 to further ensure the stability of the hydraulic cylinder 2262 when it does not need to be telescoped. Moreover, the arc-shaped iron block 22671 and the arc-shaped electromagnet 22672 are arranged on the long side. Even if the arc-shaped iron block 22671 and the arc-shaped electromagnet 22672 are offset by a certain position, the active end of the hydraulic cylinder 2262 can be effectively fixed.

[0041] A row of T-shaped cavities 232 are provided at the bottom of the pressure plate 23, and a T-shaped block 233 is slidably arranged inside the T-shaped cavity 232. A group of springs 234 are installed between the top of the inner wall of the T-shaped cavity 232 and the top of the T-shaped block 233. If the size of the hard object is smaller than the diameter of the T-shaped cavity 232 and is just located below the T-shaped cavity 232, on the one hand, the hard object will be pressed down to the ground, and on the other hand, the hard object will also resist the downward movement of the T-shaped block 233 and move the inside of the spring 234, so that one end of the hard object enters the inner cavity of the T-shaped cavity 232 for temporary storage, so as to reduce the impact of the hard objects on the ground on the pressure plate 23 and ensure that the pressure plate 23 is in a horizontal state as much as possible.

[0042] The connecting plate fixing member 225 includes two side connecting plates 2251, both ends of the side connecting plates 2251 are provided with T-shaped holes 2252, the inside of the T-shaped holes 2252 is interspersed with T-shaped rods 2253, and the T-shaped rods 2253 are threadedly installed with hexagon socket bolts 2254 through threaded holes formed at one end thereof.

[0043] Three rod holes 223 for T-shaped rods 2253 to pass through are formed on one side of the vertical connecting plate 221, and plate grooves 222 connected to the rod holes 223 are formed on both sides of the vertical connecting plate 221 and at positions directly opposite to the two ends of the rod holes 223; three rod holes 2265 for T-shaped rods 2253 to pass through are formed on one side of the leg seat 226, and plate grooves 2261 connected to the rod holes 2265 are formed on both sides of the leg seat 226 and at positions directly opposite to the two ends of the rod holes 2265.

[0044] The fixing process between the vertical connecting plate 221 and the leg seat 226 is as follows:

[0045] First, place one end of the side connecting plate 2251 into the second side plate groove 2261, and make the second rod hole 2265 and the T-shaped hole 2252 coaxially, and pass the T-shaped rod 2253 through the T-shaped hole 2252 and the second rod hole 2265. Then, place one end of the other connecting plate fixing piece 225 into the second side plate groove 2261, and make the hexagon socket bolt 2254 pass through the inside of the T-shaped hole 2252 and the threaded hole on the T-shaped rod 2253 to fix it. Then, fix the side connecting plate 2251. After the three side connecting plates 2251 are fixed on the leg seat 226, the other ends of the three side connecting plates 2251 are placed into the plate groove 222, and 2231 is fixed to the vertical connecting plate 221 through the threaded connection between the T-bar 2253 and the hexagon socket bolt 2254. The vertical connecting plate 221 and the leg seat 226 are detachably connected through the connecting plate fixing piece 225, so that the driving source and the supporting walking end are in detachable connection, which is convenient for disassembly, maintenance or replacement.

[0046] The working principle of the present invention is:

[0047] When in use, the process of moving the trestle is as follows:

[0048] When the main beam 1 needs to be moved to the left, the driving source 21 drives the vertical leg assembly 22 to rotate counterclockwise and rotate the vertical leg assembly 22 upward. At this time, the vertical leg assembly 22 drives the pressure plate 23 to move downward. When the driving source 21 drives the vertical leg assembly 22 to rotate more than half a circle, the pressure plate 23 first contacts the ground. At this time, the driving source 21 continues to drive the vertical leg assembly 22 to rotate, which will lift the main beam 1 upward and move it to the left side of the main beam 1. When the vertical leg assembly 22 rotates to its original position, the vertical leg assembly 22 drives the pressure plate 23 to shorten and reset, thereby moving the main beam 1 to the left by one position. By continuously driving the rotation of the vertical leg assembly 22 by the driving source 21, the trestle can be moved horizontally along the direction of the main beam 1.

[0049] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A box-type hydraulic trestle for tunnel invert construction, characterized in that: include: A main beam plate (1), two groups of walking legs (2) and four inclined plate frames (3), wherein the four inclined plate frames (3) are rotatably mounted at the four corners of the main beam plate (1), and the two groups of walking legs (2) are symmetrically mounted at the bottom of the main beam plate (1); The walking leg (2) comprises a driving source (21) installed at the bottom of the main beam plate (1), the driving end of the driving source (21) is provided with a vertical leg assembly (22), and the movable end at the bottom of the vertical leg assembly (22) is rotatably installed with a pressing plate (23); when the main beam plate (1) needs to move to the left, the driving source (21) drives the vertical leg assembly (22) to rotate counterclockwise, and the vertical leg assembly (22) drives the pressing plate (23) to move toward the ground, and under the interference effect of the pressing plate (23) and the ground, the main beam plate (1) is moved to the left; when the main beam plate (1) needs to move to the right, the vertical leg assembly (22) is driven to rotate clockwise; Side connection protrusions (11) are welded at the middle of both sides of the main beam plate (1), a rotating shaft (31) is rotatably mounted at the lateral end of the top of the inclined plate frame (3) via a bearing, and the rotating shaft (31) is fixed to the side connection protrusion (11), a connecting groove (33) is provided at the lateral end of the top of the inclined plate frame (3) and on a side close to the main beam plate (1), a fixed connecting plate (32) is fixedly mounted in the connecting groove (33) via bolts, and fixing grooves (12) are provided at the four corners of the top of the main beam plate (1), and the side of the fixed connecting plate (32) away from the inclined plate frame (3) is detachably mounted in the fixing groove (12) via bolts; The walking leg (2) comprises a motor frame (211) mounted on the bottom of the main beam plate (1), and two fixed connecting frames (213) mounted on the bottom of the main beam plate (1), a vertical bar (214) being fixed between opposite surfaces of the two fixed connecting frames (213), a driving main shaft (215) and a driving auxiliary shaft (216) being rotatably mounted on two ends of the front surface of the fixed connecting frame (213), a rotating plate (217) being fixed on one end of the driving main shaft (215) and the driving auxiliary shaft (216) away from the vertical bar (214), a linkage shaft (218) being rotatably mounted on one end of the rotating plate (217) away from the driving auxiliary shaft (216) via a bearing, and the linkage shaft (218) being rotatably connected to the vertical leg assembly (22), a driving motor (212) for driving the driving main shaft (215) to rotate is fixedly mounted inside the mounting cavity of the motor frame (211), and a driving end of the driving motor (212) is connected to the driving main shaft (215); The vertical leg assembly (22) comprises a vertical connecting plate (221), a leg seat (226) and three connecting plate fixing members (225), and the vertical connecting plate (221) and the leg seat (226) are fixed via the three connecting plate fixing members (225), both ends of the vertical connecting plate (221) are provided with shaft holes (224), and the shaft holes (224) are rotatably connected to the linkage shaft (218) via bearings installed therein, and the pressing plate (23) is rotatably installed at the bottom end of the leg seat (226); A hydraulic cylinder (2262) and a hydraulic oil tank (2264) are respectively installed on both sides of the top of the leg base (226); the output end of the hydraulic oil tank (2264) is fixedly connected to the input end of the hydraulic pump (2263), and the output end of the hydraulic pump (2263) is connected to the input end of the hydraulic cylinder (2262); vertical holes (2269) for the movable end of the hydraulic cylinder (2262) to pass through are provided on both sides of the bottom of the leg base (226); A U-shaped frame (2268) is installed at the movable end of the hydraulic cylinder (2262), and hole blocks (231) are installed on both sides of the top of the pressure plate (23), the top of the hole block (231) on the same side is located inside the concave cavity of the U-shaped frame (2268) on the same side, and the hole block (231) on the same side is rotatably connected to the U-shaped frame (2268) via a rotating shaft; Both sides of the front side of the leg seat (226) are provided with a magnetic suction cavity (2266) connected to the vertical hole (2269); a magnetic suction component (2267) is installed inside the magnetic suction cavity (2266); the magnetic suction component (2267) comprises a fixed connecting block (22673) installed inside the magnetic suction component (2267) by means of bolts; an arc-shaped electromagnet (22672) is installed on an end surface of the fixed connecting block (22673) close to the hydraulic cylinder (2262); an arc-shaped groove (22621) is provided at the movable end of the hydraulic cylinder (2262) and close to the side of the arc-shaped electromagnet (22672); an arc-shaped iron block (22671) is fixed inside the arc-shaped groove (22621) by means of bolts; and a fastening groove (22622) is provided at the movable end of the hydraulic cylinder (2262) and located above the arc-shaped groove (22621); A row of T-shaped cavities (232) is provided at the bottom of the pressing plate (23), a T-shaped block (233) is slidably provided inside the T-shaped cavity (232), and a group of springs (234) is installed between the top of the inner wall of the T-shaped cavity (232) and the top of the T-shaped block (233); The connecting plate fixing member (225) comprises two side connecting plates (2251), both ends of the side connecting plates (2251) are provided with T-shaped holes (2252), a T-shaped rod (2253) is inserted into the inside of the T-shaped hole (2252), and the T-shaped rod (2253) is threadedly mounted with a hexagon socket bolt (2254) through a threaded hole formed at one end of the T-shaped rod (2253).

2. A tunnel invert construction box-type hydraulic trestle according to claim 1, characterized in that: One side of the vertical connecting plate (221) is provided with three rod holes (223) for the T-shaped rods (2253) to pass through, and two sides of the vertical connecting plate (221) are provided with plate grooves (222) connected to the rod holes (223) at positions directly opposite to the two ends of the rod holes (223). One side of the leg seat (226) is provided with three rod holes (2265) for the T-shaped rods (2253) to pass through, and two sides of the leg seat (226) are provided with plate grooves (2261) connected to the rod holes (2265) at positions directly opposite to the two ends of the rod holes (2265).

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