A concealed excavation trolley device suitable for M double arch and OC cross-sections

Abstract

The present invention belongs to the field of construction technology. Specifically, it is a tunnel boring trolley device suitable for both M-type double-arch and OC-type cross-sections. The device comprises a portal frame; a first scissors brace is installed in the middle of the portal frame; a plurality of steel arch frames are installed inside the portal frame; and a plurality of longitudinal connectors are installed between the steel arch frames and the portal frame. The tunnel boring trolley device, which is suitable for both "M" and "OC" cross-sections, solves the problems of heavy labor, low construction efficiency, and poor construction quality associated with traditional formwork support construction. The trolley device, which is suitable for both cross-sections, not only avoids construction interference, reduces manual labor, and improves construction efficiency, but also significantly improves the quality of tunnel lining construction and the degree of mechanization of tunnel secondary lining construction. This device achieves rapid progress and high quality, bringing significant economic benefits to enterprises.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction, and in particular is a concealed excavation trolley device suitable for two cross-section forms, M double arch and OC. Background Art

[0002] With the rapid development of urban rail transit in my country, rail transit construction faces significant environmental constraints and other challenges. To address complex ground environments and the interweaving of municipal utility pipelines, bored tunnels are widely used in urban rail transit. Secondary lining in bored tunnels is a crucial step in transforming the load-bearing system after tunnel formation. Tunnel secondary lining ensures permanent stability, safety, and aesthetics during tunnel operation; it also serves as a safety reserve.

[0003] A Chinese patent with publication number CN106223973B discloses a method and system for controlling the drilling depth of a tunnel boring trolley and a tunnel boring trolley drilling device, comprising: detecting the displacement of a hydraulic cylinder (4) in the tunnel boring trolley; judging the resistance encountered by a rock drill (5) during drilling based on the displacement of the hydraulic cylinder (4); and adjusting the control current applied to a proportional regulating valve group (2) based on the resistance encountered by the rock drill (5) during drilling, so as to adjust the pressure of the hydraulic cylinder (4) and / or the drilling speed of the rock drill (5).

[0004] For the secondary lining construction where the M double arch and OC cross-sections exist in the same dark-cut tunnel section, the efficiency of the traditional formwork support concrete pouring secondary lining construction is low.

[0005] To this end, the present invention provides a dark excavation trolley device suitable for two cross-section forms: M double arch and OC. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: the present invention is a dark excavation trolley device suitable for two cross-section forms of M double arch and OC, comprising a portal frame; a first scissors brace is installed in the middle of the portal frame; a plurality of steel arch frames are installed inside the portal frame; a plurality of longitudinal connecting members are installed between the steel arch frame and the portal frame; a vertical pole is installed on the top of the portal frame; a second scissors brace is installed in the middle of the portal frame; a plurality of steel plate reinforcements are provided on the side walls of the portal frame; a steel pipe top screw is connected between the portal frame and each steel plate reinforcement; a grouting port is installed on the top of the portal frame; a plurality of feeding and vibration windows are provided on the side walls of the portal frame;

[0008] 1. Construction preparation

[0009] The construction site then meets the conditions for assembling the underground excavation trolley device, including the invert arch or bottom plate, low side walls, waterproof layer, steel bar binding, etc.

[0010] 2. Trolley translation

[0011] Move the assembled or demoulded trolley to the work surface where the formwork is to be supported.

[0012] 3. Trolley support

[0013] It includes positioning the trolley, checking the contour line dimensions, setting up the head mold, reinforcement, etc.

[0014] 4. Pouring concrete

[0015] Including installation of pumps, pipes, commercial concrete feeding, vibration, maintenance, etc.

[0016] 5. Demolding

[0017] Loosen the side wall formwork screws and lower the trolley. To keep the concrete surface and formwork surface smooth, demoulding should be done in a timely manner. Before supporting the formwork, the formwork surface should be polished, oiled, and cleaned.

[0018] 5. Trolley removal;

[0019] 6. After the lining construction is completed through cyclic operations, the trolley will be dismantled and stored.

[0020] At the same time, a translation device is installed at the bottom of the excavation trolley. This dark excavation trolley device has a front and a rear set of translation devices, which are supported on the side beams of the portal frame. The translation device is connected to the longitudinal beam of the top formwork frame through a lifting cylinder. The vertical positioning and demoulding of the trolley are adjusted by the contraction of the cylinder. There is an oil cylinder in the front and rear of the translation device in the horizontal direction, which is used to adjust the lining center of the template to be consistent with the center of the tunnel. It is the basis for ensuring the secondary lining accuracy and construction quality of the dark excavation tunnel.

[0021] The gantry is the main load-bearing component of the entire trolley. It is composed of crossbeams, columns and longitudinal beams connected by bolts. The crossbeams and columns are connected by connecting beams and diagonal rods. The stability of the gantry is the premise and foundation for this double-section underground excavation trolley device to ensure fast and high-quality construction.

[0022] Furthermore, universal nodes are installed at the connections of the plurality of steel arch frames.

[0023] Furthermore, a positioning plate is installed at the bottom of the door frame; a hydraulic cylinder is fixedly connected to the bottom of the positioning plate; a pressure plate is fixedly connected to the output end of the bottom of the hydraulic cylinder. When in use, the switch of the hydraulic cylinder is turned on, so that the hydraulic cylinder supports the door frame, supports the door frame and the frame on top of it, reduces the pressure on the bottom of the frame, and reduces the problem of damage, extrusion and deformation of the wheels at the bottom of the door frame when the frame maintains one position for a long time.

[0024] Furthermore, the middle part of the hydraulic cylinder is hinged with multiple support rods through torsion springs; a friction plate is hinged at the bottom of each support rod; a spring plate is fixed between the support rod and the middle part of the hydraulic cylinder; by arranging expandable support rods and friction plates at the bottom of the hydraulic cylinder, when the hydraulic cylinder is pressed downward, the friction plate will first contact the ground at the bottom of the tunnel, and then when the hydraulic cylinder continues to descend, the friction plate will unfold at the bottom of the hydraulic cylinder to support the hydraulic cylinder, thereby improving the stability of the hydraulic cylinder when supported on the bottom of the portal frame.

[0025] Furthermore, a plurality of cleaning rollers are provided at the bottom of the pressure plate; a first elastic rope is connected between the end of the cleaning roller and the middle of the hydraulic cylinder; the cleaning roller is in contact with the pressure plate; a second elastic rope is connected between the end of the cleaning roller and the friction plate; by providing a cleaning roller at the bottom of the pressure plate, during the unfolding of the friction plate, the cleaning roller can be pulled by the second elastic rope to move at the bottom of the pressure plate to clean the bottom of the pressure plate, reduce impurity residue at the bottom of the pressure plate, improve the stability of the pressure plate support on the ground at the bottom of the tunnel, and reduce the problem of sliding displacement when the pressure plate contacts the tunnel ground.

[0026] Furthermore, a plurality of elastic limiting plates are fixedly connected to both sides of the pressure plate; by arranging the elastic limiting plates on both sides of the pressure plate, when the friction plate pulls the cleaning roller through the second elastic rope, the elastic limiting plates will control the cleaning rollers on both sides of the pressure plate through their own deformation, so that the cleaning rollers can be stably maintained near the pressure plate, and at the same time, when the hydraulic cylinder is out of contact with the tunnel ground, the cleaning rollers can be pulled back to the bottom of the pressure plate by the first elastic rope under the guidance of the elastic limiting plates, thereby performing a second cleaning on the bottom of the pressure plate, reducing the residual sand and gravel at the bottom of the pressure plate, and improving the cleanliness of the bottom surface of the pressure plate after multiple uses.

[0027] Furthermore, an elastic rod is provided in the middle of the support rod; the end of the elastic rod is slidably connected to the support rod; the other end of the elastic rod passes through the elastic limiting plate and extends to the bottom of the elastic limiting plate; a plurality of rubber balls are provided in the middle of the elastic rod; a third elastic rope is connected between the rubber balls and the elastic rod; by providing an elastic rod between the support rod and the elastic limiting plate, the elastic rod can be pulled out from the inside of the elastic limiting plate when the support rod is unfolded, and at this time the rubber ball will intermittently contact the elastic limiting plate, causing the elastic limiting plate, the support rod and the friction plate to vibrate, thereby reducing impurities remaining on the bottom of the friction plate and the pressure plate.

[0028] Furthermore, a limiting ring is provided in the middle of the elastic limiting piece; a fourth elastic rope is connected between the limiting ring and the elastic limiting piece; by providing a limiting ring in the middle of the elastic limiting piece, when the rubber ball intermittently passes through the elastic limiting piece, it can drive the limiting ring to move, and when the rubber ball is separated from the limiting ring, the limiting ring will be reset under the pull of the fourth elastic rope, thereby generating shaking, which can further reduce the residual impurities on the elastic limiting piece and the pressure plate, thereby improving the stability of the pressure plate when used again after multiple times.

[0029] Furthermore, a plurality of elastic knocking rods are fixedly connected to the side wall of the limiting ring; by arranging the elastic knocking rods on the limiting ring, when the limiting ring shakes, the elastic knocking rods knock the elastic limiting plate, and at the same time, the bent elastic knocking rods will quickly pull the limiting ring back. The elastic knocking rods knock the elastic limiting plate, which can knock off impurities attached to the elastic limiting plate, so that the stability of the elastic limiting plate can be maintained after long-term use.

[0030] Furthermore, an elastic cloth is fixed to the end of the elastic rod; one end of the elastic cloth is connected to the end of the elastic limiting plate, and the other end is connected to the contact position between the elastic limiting plate and the pressure plate; by providing an elastic cloth at the end of the elastic rod, when the elastic rod is pulled out of the elastic limiting plate by the support rod, the elastic cloth can position the end of the elastic rod, so that when the hydraulic cylinder is lifted from the ground, the elastic rod can also be normally inserted into the elastic limiting plate, thereby improving the stability of the elastic rod moving inside the elastic limiting plate.

[0031] The beneficial effects of the present invention are as follows:

[0032] 1. The present invention describes a tunnel boring trolley device suitable for both M-type and OC-type cross-sections. This device, suitable for both "M" and "OC" cross-sections, addresses the issues of heavy labor, low efficiency, and uncertain quality associated with traditional formwork construction. This device, suitable for both cross-sections, not only avoids construction interference, reduces labor, and improves efficiency, but also significantly enhances the quality of tunnel lining construction and increases the degree of mechanization in tunnel secondary lining construction. This results in faster progress and better quality, bringing significant economic benefits to enterprises.

[0033] 2. The present invention describes a concealed excavation trolley device suitable for M double arch and OC cross-sections. The hydraulic cylinder supports the portal frame, supports the portal frame and the frame on top of it, reduces the pressure on the bottom of the frame, and reduces the problem of damage, extrusion and deformation of the wheels at the bottom of the portal frame when the frame remains in one position for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described below with reference to the accompanying drawings.

[0035] Figure 1 This is a longitudinal sectional view of the underground excavation trolley device (M double arch section) of the present invention;

[0036] Figure 2 This is a longitudinal sectional view of the underground excavation trolley device (OC double arch section) of the present invention;

[0037] Figure 3 This is a cross-sectional view of the underground excavation trolley device of the present invention;

[0038] Figure 4 It is a structural diagram of the hydraulic support frame in the present invention;

[0039] Figure 5 It is a partial structural diagram of the bottom of the hydraulic rod in the present invention;

[0040] Figure 6 It is a structural diagram of the elastic limiting piece in the present invention;

[0041] Figure 7 It is a schematic diagram of the partial structure of the elastic limiting piece in the present invention;

[0042] In the figure: 1. Gate frame; 2. First scissors support; 3. Steel arch frame; 4. Longitudinal connector; 5. Vertical pole; 6. Universal node; 7. Second scissors support; 8. Steel plate reinforcement; 9. Steel pipe top screw; 10. Grouting port; 101. Feed vibration window; 11. Positioning plate; 12. Hydraulic cylinder; 13. Pressing plate; 21. Support rod; 22. Friction plate; 31. Cleaning roller; 32. First elastic rope; 33. Second elastic rope; 41. Elastic limiting plate; 51. Elastic rod; 52. Rubber ball; 53. Third elastic rope; 61. Limiting ring; 62. Fourth elastic rope; 71. Elastic knocking rod; 81. Elastic cloth. DETAILED DESCRIPTION

[0043] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0044] Example 1

[0045] like Figure 1 and 3 As shown, the embodiment of the present invention is a dark excavation trolley device suitable for M double arch and OC cross-section forms, including a door frame 1; a first scissors brace 2 is installed in the middle of the door frame 1; a plurality of steel arch frames 3 are installed inside the door frame 1; a plurality of longitudinal connectors 4 are installed between the steel arch frames 3 and the door frame 1; a vertical pole 5 is installed on the top of the door frame 1; a second scissors brace 7 is installed in the middle of the door frame 1; a plurality of steel plate reinforcements 8 are provided on the side walls of the door frame 1; a steel pipe top screw 9 is connected between the door frame 1 and each steel plate reinforcement 8; a grouting port 10 is installed on the top of the door frame 1; and a plurality of feed vibration windows 101 are provided on the side walls of the door frame 1.

[0046] The use of this tunnel boring trolley system, which is compatible with both "M" and "OC" sections, solves the problems of traditional formwork support construction, such as high labor costs, low construction efficiency, and uncertain construction quality. Besides avoiding construction interference, reducing labor costs, and improving construction efficiency, the use of this trolley system for both sections significantly improves the quality of tunnel lining construction and increases the degree of mechanization in tunnel secondary lining construction. This results in faster progress and better quality, bringing significant economic benefits to the enterprise.

[0047] 1. Construction preparation

[0048] The construction site then meets the conditions for assembling the underground excavation trolley device, including the invert arch or bottom plate, low side walls, waterproof layer, steel bar binding, etc.

[0049] 2. Trolley translation

[0050] Move the assembled or demoulded trolley to the work surface where the formwork is to be supported.

[0051] 3. Trolley support

[0052] It includes positioning the trolley, checking the contour line dimensions, setting up the head mold, reinforcement, etc.

[0053] 4. Pouring concrete

[0054] Including installation of pumps, pipes, commercial concrete feeding, vibration, maintenance, etc.

[0055] 5. Demolding

[0056] Loosen the side wall formwork screws and lower the trolley. To keep the concrete surface and formwork surface smooth, demoulding should be done in a timely manner. Before supporting the formwork, the formwork surface should be polished, oiled, and cleaned.

[0057] 5. Remove the trolley.

[0058] 6. After the lining construction is completed through cyclic operations, the trolley will be dismantled and stored.

[0059] At the same time, a translation device is installed at the bottom of the excavation trolley. This dark excavation trolley device has a front and a rear set of translation devices, which are supported on the side beams of the portal frame. The translation device is connected to the longitudinal beam of the top formwork frame through a lifting cylinder. The vertical positioning and demoulding of the trolley are adjusted by the contraction of the cylinder. There is an oil cylinder in the front and rear of the translation device in the horizontal direction, which is used to adjust the lining center of the template to be consistent with the center of the tunnel. It is the basis for ensuring the secondary lining accuracy and construction quality of the dark excavation tunnel.

[0060] The gantry is the main load-bearing component of the entire trolley. It is composed of crossbeams, columns and longitudinal beams connected by bolts. The crossbeams and columns are connected by connecting beams and diagonal rods. The stability of the gantry is the premise and foundation for this double-section underground excavation trolley device to ensure fast and high-quality construction.

[0061] Example 2

[0062] like Figure 2 As shown in the comparative example 1, another embodiment of the present invention is that a universal node 6 is installed at the connection of multiple steel arch frames 3.

[0063] Example 3

[0064] like Figure 4-7 As shown, a positioning plate 11 is installed at the bottom of the door frame 1; a hydraulic cylinder 12 is fixedly connected to the bottom of the positioning plate 11; a pressure plate 13 is fixedly connected to the output end of the bottom of the hydraulic cylinder 12. When in use, the switch of the hydraulic cylinder 12 is turned on, so that the hydraulic cylinder 12 presses against the door frame 1, supports the door frame 1 and the frame on top of it, reduces the pressure on the bottom of the frame, and reduces the problem of damage, extrusion and deformation to the wheels at the bottom of the door frame 1 when the frame maintains one position for a long time.

[0065] The middle part of the hydraulic cylinder 12 is hinged with multiple support rods 21 through torsion springs; a friction plate 22 is hinged at the bottom of each support rod 21; a spring piece is fixed between the support rod 21 and the middle part of the hydraulic cylinder 12; by providing expandable support rods 21 and friction plates 22 at the bottom of the hydraulic cylinder 12, when the hydraulic cylinder 12 is pressed downward, the friction plate 22 will first contact the ground at the bottom of the tunnel, and then when the hydraulic cylinder 12 continues to descend, the friction plate 22 will expand at the bottom of the hydraulic cylinder 12 to support the hydraulic cylinder 12, thereby improving the stability of the hydraulic cylinder 12 when supported at the bottom of the portal frame 1.

[0066] A plurality of cleaning rollers 31 are provided at the bottom of the pressure plate 13; a first elastic rope 32 is connected between the end of the cleaning roller 31 and the middle of the hydraulic cylinder 12; the cleaning roller 31 is in contact with the pressure plate 13; a second elastic rope 33 is connected between the end of the cleaning roller 31 and the friction plate 22; by providing the cleaning roller 31 at the bottom of the pressure plate 13, during the unfolding process of the friction plate 22, the cleaning roller 31 can be pulled by the second elastic rope 33 to move at the bottom of the pressure plate 13, thereby cleaning the bottom of the pressure plate 13, reducing impurity residue at the bottom of the pressure plate 13, improving the stability of the pressure plate 13 supported on the ground at the bottom of the tunnel, and reducing the problem of sliding displacement when the pressure plate 13 contacts the tunnel ground.

[0067] A plurality of elastic limiting pieces 41 are fixedly connected to both sides of the pressing plate 13; by providing the elastic limiting pieces 41 on both sides of the pressing plate 13, when the friction plate 22 pulls the cleaning roller 31 through the second elastic rope 33, the elastic limiting pieces 41 will control the cleaning roller 31 on both sides of the pressing plate 13 through their own deformation, so that the cleaning roller 31 can be stably maintained near the pressing plate 13. At the same time, when the hydraulic cylinder 12 is out of contact with the tunnel ground, the cleaning roller 31 can be pulled back to the bottom of the pressing plate 13 by the first elastic rope 32 under the guidance of the elastic limiting piece 41, thereby performing a second cleaning on the bottom of the pressing plate 13, reducing the residual sand and gravel at the bottom of the pressing plate 13, and improving the cleanliness of the bottom surface of the pressing plate 13 after multiple uses.

[0068] An elastic rod 51 is provided in the middle of the support rod 21; the end of the elastic rod 51 is slidably connected to the support rod 21; the other end of the elastic rod 51 passes through the elastic limiting piece 41 and extends to the bottom of the elastic limiting piece 41; a plurality of rubber balls 52 are provided in the middle of the elastic rod 51; a third elastic rope 53 is connected between the rubber ball 52 and the elastic rod 51; by providing an elastic rod 51 between the support rod 21 and the elastic limiting piece 41, the elastic rod 51 can be pulled out from the inside of the elastic limiting piece 41 when the support rod 21 is unfolded, and at this time the rubber ball 52 will intermittently contact the elastic limiting piece 41, causing the elastic limiting piece 41, the support rod 21 and the friction plate 22 to shake, thereby reducing impurities remaining on the bottom of the friction plate 22 and the pressure plate 13.

[0069] A limiting ring 61 is provided in the middle of the elastic limiting piece 41; a fourth elastic rope 62 is connected between the limiting ring 61 and the elastic limiting piece 41; by providing the limiting ring 61 in the middle of the elastic limiting piece 41, when the rubber ball 52 intermittently passes through the elastic limiting piece 41, it will drive the limiting ring 61 to move, and when the rubber ball 52 is separated from the limiting ring 61, the limiting ring 61 will be reset under the pull of the fourth elastic rope 62, thereby generating shaking, which can further reduce the residual impurities on the elastic limiting piece 41 and the pressure plate 13, thereby improving the stability of the pressure plate 13 when used again after multiple times.

[0070] The side wall of the limiting ring 61 is fixedly connected to a plurality of elastic knocking rods 71; by arranging the elastic knocking rods 71 ​​on the limiting ring 61, when the limiting ring 61 shakes, the elastic knocking rods 71 ​​knock the elastic limiting piece 41, and at the same time, the bent elastic knocking rods 71 ​​will quickly pull the limiting ring 61 back. The elastic knocking rods 71 ​​knock on the elastic limiting piece 41, which can knock off impurities attached to the elastic limiting piece 41, so that the stability of the elastic limiting piece 41 can be maintained after long-term use.

[0071] The end of the elastic rod 51 is fixed with an elastic cloth 81; one end of the elastic cloth 81 is connected to the end of the elastic limiting piece 41, and the other end is connected to the contact position between the elastic limiting piece 41 and the pressure plate 13; by providing the elastic cloth 81 at the end of the elastic rod 51, when the elastic rod 51 is pulled out of the elastic limiting piece 41 by the support rod 21, the elastic cloth 81 can position the end of the elastic rod 51, so that when the hydraulic cylinder 12 is lifted from the ground, the elastic rod 51 can also be normally inserted into the elastic limiting piece 41, thereby improving the stability of the elastic rod 51 moving inside the elastic limiting piece 41.

[0072] During operation, the secondary lining of the M double arch / OC section is completed by this trolley device through the following six steps.

[0073] Step 1: Construction Preparation

[0074] Control points: Maintenance of concrete pump motor, testing of concrete delivery pipeline to check for air and water leaks, thorough polishing of trolley formwork surface, removal of rust spots, application of oil to prevent rust, etc.

[0075] Step 2: Trolley translation

[0076] Step 3: Trolley support

[0077] Control points: The rails must be laid straight before the trolley is in place, and the gantry support jack must not be supported on the track; after the trolley is in place, the operator should first wed the wheels of the trolley with wooden wedges, and then position the trolley under the guidance of the surveyor.

[0078] When the trolley has a large offset, the oil cylinder should be adjusted symmetrically in several steps to make the trolley meet the requirements; when the trolley is positioned qualifiedly, the screw jack at the bottom of the trolley should be tightened first, and then the jacks on both sides of the trolley should be tightened symmetrically in sequence; when all the screw jacks of the trolley are tightened into place, the hydraulic cylinder jack should be loosened to protect the cylinder.

[0079] Step 4: Pour concrete

[0080] Key Control Points: Before pouring concrete, the construction joints on both sides of the inverted arch must be cleaned with a high-pressure water gun, but no water should remain. Check that the threads on both sides of the vertical posts are tightened, the low side wall formwork is reinforced, and the gap between the bottom layer and the ground is tightly sealed. Pour from top to bottom, first the wall and then the arch, and pour symmetrically on both sides of the formwork. The height difference between the left and right sides must not exceed 50cm.

[0081] Step 5: Demolding

[0082] Step 6: Trolley removal

[0083] Control focus: After each working cycle, check the tightness of bolts and pins in each part and check and tighten various connecting parts.

[0084] When the hydraulic cylinder 12 is in use, the switch of the hydraulic cylinder 12 is turned on, so that the hydraulic cylinder 12 presses against the portal frame 1, supporting the portal frame 1 and the frame body on top of it, reducing the pressure on the bottom of the frame body, and reducing the problem of damage, squeezing and deformation of the wheels at the bottom of the portal frame 1 when the frame body remains in one position for a long time. By providing an expandable support rod 21 and friction plate 22 at the bottom of the hydraulic cylinder 12, when the hydraulic cylinder 12 is pressed downward, the friction plate 22 will first contact the ground at the bottom of the tunnel. Then, as the hydraulic cylinder 12 continues to descend, the friction plate 22 will expand at the bottom of the hydraulic cylinder 12, supporting the hydraulic cylinder 12 and improving the stability of the hydraulic cylinder 12 when it is supported at the bottom of the portal frame 1. By providing a cleaning roller 31 at the bottom of the pressure plate 13, the cleaning roller 31 can be pulled by the second elastic rope 33 to move along the bottom of the pressure plate 13 during the deployment of the friction plate 22, cleaning the bottom of the pressure plate 13. This reduces impurities on the bottom of the pressure plate 13, improves the stability of the pressure plate 13 on the tunnel floor, and reduces the problem of slippage when the pressure plate 13 contacts the tunnel floor. By providing elastic stoppers 41 on both sides of the pressure plate 13, when the friction plate 22 pulls the cleaning roller 31 via the second elastic rope 33, the elastic stoppers 41 deform to control the cleaning roller 31 on both sides of the pressure plate 13, ensuring that the cleaning roller 31 remains stable near the pressure plate 13. Furthermore, when the hydraulic cylinder 12 loses contact with the tunnel floor, the cleaning roller 31, guided by the elastic stoppers 41, can be pulled back to the bottom of the pressure plate 13 by the first elastic rope 32, thereby performing a secondary cleaning of the bottom of the pressure plate 13, reducing sand and gravel residue on the bottom of the pressure plate 13 and improving the cleanliness of the bottom surface of the pressure plate 13 after multiple uses. By providing an elastic rod 51 between the support rod 21 and the elastic limiting plate 41, the elastic rod 51 can be pulled out of the elastic limiting plate 41 when the support rod 21 is deployed. At this time, the rubber ball 52 will intermittently contact the elastic limiting plate 41, causing the elastic limiting plate 41, the support rod 21, and the friction plate 22 to vibrate, thereby reducing impurities remaining on the bottom of the friction plate 22 and the pressure plate 13. By providing a limiting ring 61 in the middle of the elastic limiting plate 41, the rubber ball 52 can intermittently move when passing through the elastic limiting plate 41. When the rubber ball 52 is separated from the limiting ring 61, the limiting ring 61 is pulled back to its original position by the fourth elastic rope 62, thereby generating further vibration. This can further reduce impurities remaining on the elastic limiting plate 41 and the pressure plate 13, and improve the stability of the pressure plate 13 after repeated use. By providing an elastic knocking rod 71 on the limiting ring 61, when the limiting ring 61 shakes, the elastic knocking rod 71 knocks the elastic limiting plate 41, and at the same time, the bent elastic knocking rod 71 will quickly pull back the limiting ring 61. The elastic knocking rod 71 knocks on the elastic limiting plate 41, which can knock off impurities attached to the elastic limiting plate 41, so that the stability of the elastic limiting plate 41 can be maintained after long-term use.By providing an elastic cloth 81 at the end of the elastic rod 51, the elastic cloth 81 can position the end of the elastic rod 51 when the elastic rod 51 is pulled out of the elastic limiting piece 41 by the support rod 21, so that when the hydraulic cylinder 12 is lifted from the ground, the elastic rod 51 can still be normally inserted into the elastic limiting piece 41, thereby improving the stability of the elastic rod 51 moving inside the elastic limiting piece 41.

[0085] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0086] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" 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 scope of protection of the present invention.

[0087] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunneling trolley device suitable for M double arch and OC cross-sections, characterized by: The invention comprises a door frame (1); a first scissors brace (2) is installed in the middle of the door frame (1); a plurality of steel arch frames (3) are installed inside the door frame (1); a plurality of longitudinal connecting members (4) are installed between the steel arch frames (3) and the door frame (1); a vertical pole (5) is installed on the top of the door frame (1); a second scissors brace (7) is installed in the middle of the door frame (1); a plurality of steel plate reinforcements (8) are provided on the side wall of the door frame (1); a steel pipe top screw (9) is connected between the door frame (1) and each steel plate reinforcement (8); a grouting port (10) is installed on the top of the door frame (1); a plurality of feed vibration windows (101) are provided on the side wall of the door frame (1); A universal node (6) is installed at the connection points of the plurality of steel arch frames (3); A positioning plate (11) is installed at the bottom of the door frame (1); a hydraulic cylinder (12) is fixedly connected to the bottom of the positioning plate (11); a pressure plate (13) is fixedly connected to the output end of the bottom of the hydraulic cylinder (12); The middle of the hydraulic cylinder (12) is hinged with a plurality of support rods (21) via a torsion spring; the bottom of each support rod (21) is hinged with a friction plate (22); and a spring sheet is fixedly connected between the support rod (21) and the middle of the hydraulic cylinder (12); A plurality of cleaning rollers (31) are provided at the bottom of the pressure plate (13); a first elastic rope (32) is connected between the end of the cleaning roller (31) and the middle of the hydraulic cylinder (12); the cleaning roller (31) is in contact with the pressure plate (13); and a second elastic rope (33) is connected between the end of the cleaning roller (31) and the friction plate (22).

2. The underground excavation trolley device according to claim 1, which is suitable for M double arch and OC cross-section forms, is characterized in that: A plurality of elastic limiting pieces (41) are fixedly connected to both sides of the pressing plate (13).

3. The underground excavation trolley device suitable for M double arch and OC cross-sections according to claim 2, characterized in that: An elastic rod (51) is provided in the middle of the support rod (21); the end of the elastic rod (51) is slidably connected to the support rod (21); the other end of the elastic rod (51) passes through the elastic limiting piece (41) and extends to the bottom of the elastic limiting piece (41); a plurality of rubber balls (52) are provided in the middle of the elastic rod (51); a third elastic rope (53) is connected between the rubber balls (52) and the elastic rod (51).

4. The underground excavation trolley device suitable for M double arch and OC cross-sections according to claim 3, characterized in that: A limiting ring (61) is provided in the middle of the elastic limiting piece (41); a fourth elastic rope (62) is connected between the limiting ring (61) and the elastic limiting piece (41).

5. The underground excavation trolley device suitable for M double arch and OC cross-sections according to claim 4 is characterized in that: A plurality of elastic knocking rods (71) are fixedly connected to the side wall of the limiting ring (61).

6. The underground excavation trolley device suitable for M double arch and OC cross-sections according to claim 5, characterized in that: The end of the elastic rod (51) is fixedly connected with an elastic cloth (81); one end of the elastic cloth (81) is connected to the end of the elastic limiting piece (41), and the other end is connected to the contact position between the elastic limiting piece (41) and the pressure plate (13).

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