Waterproof membrane laying device for tunnel drilling construction

Abstract

This invention discloses a waterproof membrane laying device for tunnel drilling construction: it includes a chassis and a drive arm. The chassis has a vertical frame, and the drive arm is connected to the frame via a swing arm slider that can slide vertically along the frame. The swing arm slider has a membrane placement component mounted in the Z-direction. The drive arm can rotate around the membrane placement component as its rotation axis. A laying assembly is located at the end of the drive arm. The laying assembly includes a fixing plate connected to the end of the drive arm, which connects two Z-direction-arranged auxiliary laying rollers and a main laying roller positioned between the two auxiliary laying rollers. A cutting component for cutting the membrane is located between one auxiliary laying roller and the main laying roller, and a nail gun for nailing the membrane to the tunnel wall is located between the other auxiliary laying roller and the main laying roller. This invention can complete the laying of the entire membrane roll without lateral vehicle movement, ensuring continuous operation. During the laying process, nailing, cleaning of joints, heating, and membrane cutting can be completed simultaneously, resulting in a high degree of automation.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, specifically to a waterproof membrane laying device for tunnel drilling construction. Background Technology

[0002] During tunnel drilling and shield tunneling, a concrete layer needs to be poured into the inner wall of the tunnel after shield tunneling to provide support and waterproofing. To further ensure sealing performance, a waterproof layer is usually added between the concrete layer and the tunnel wall. The waterproof layer is typically made of waterproof membrane, which is mechanically fixed (nailed) to the inner wall of the tunnel after shield tunneling. Then, concrete is poured over the outside of the waterproof layer. Through the combined action of the concrete layer and the waterproof layer, the inner wall of the tunnel is supported and waterproofed.

[0003] Because tunnels are relatively large (usually around ten meters in diameter), a more primitive approach is to erect scaffolding inside, with construction workers standing on it to work. For example, patent number "202211133977.1" discloses such a type of scaffolding. Clearly, this method of manually erecting scaffolding cannot guarantee either efficiency or construction quality.

[0004] To address this issue, patent number "202210969948.2" discloses an IoT-based intelligent tunnel waterproof membrane laying machine. While this machine improves efficiency, it suffers from several problems: it cannot complete the entire circumference of the membrane in one pass. This means the machine's wheels are always within the laying area. Although the patent discloses a lateral movement method to ensure the integrity of the waterproof layer, in practical applications, the vehicle needs to simultaneously perform both walking and lateral movement. Therefore, this method places high demands on the vehicle's chassis performance and manufacturing costs. Furthermore, the vehicle needs to run over the already laid but not yet fixed waterproof layer during lateral movement, thus compromising the quality of the laying. For these reasons, there is a need in the prior art to design a machine capable of laying tunnel waterproof membrane in one pass. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a waterproof membrane laying device for tunnel drilling construction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Waterproof membrane laying device for tunnel drilling construction: including chassis and drive arm. The chassis is equipped with a vertical frame. The frame is connected to the drive arm through a swing arm slider that can slide vertically along the frame. The swing arm slider is equipped with a membrane placement component installed in the Z direction. The drive arm can rotate with the membrane placement component as the rotation axis.

[0008] The end of the drive arm is equipped with a laying component;

[0009] The paving assembly includes a fixing plate connected to the end of the drive arm, the fixing plate connecting two auxiliary paving rollers arranged in the Z direction and a main paving roller arranged between the two auxiliary paving rollers;

[0010] One of the auxiliary laying rollers is equipped with a cutting tool between it and the main laying roller for cutting the roll material, and the other auxiliary laying roller is equipped with a nail gun between it and the main laying roller for nailing the roll material to the tunnel wall.

[0011] Preferably, the aforementioned waterproof membrane laying device for tunnel drilling construction has two fixing plates, which are arranged in parallel and parallel to the XY plane.

[0012] The fixed plate has a radially arranged central through groove, and arc-shaped side sliding grooves are provided on both sides of the central through groove. The central shaft of the main laying roller can be slidably connected to the central through groove through the central sliding frame, and the two auxiliary laying rollers can be slidably connected to the two side sliding grooves respectively.

[0013] The main laying roller is connected by a hinge plate located between two fixed plates. The two ends of the hinge plate are respectively hinged to the central axis of the main laying roller and the central axis of the auxiliary laying roller, and the center of the hinge plate is hinged to the fixed plate.

[0014] Preferably, in the aforementioned waterproof membrane laying device for tunnel drilling construction: a central sliding groove is provided on the side of the central through groove, the central shaft of the main laying roller is slidably connected to the central sliding groove through a central sliding frame, and the central shaft of the auxiliary laying roller is connected to two arc sliding plates. The two arc sliding plates are located on the outside of the fixed plate and are in a rolling connection with the fixed plate.

[0015] Preferably, in the aforementioned waterproof membrane laying device for tunnel drilling construction: the cutting piece and the nail gun are both connected to the Z-axis drive device, the end of the Z-axis drive device is mounted on the fixed plate, and is used to drive the cutting piece and the nail gun to move along the Z-axis.

[0016] Preferably, in the aforementioned waterproof membrane laying device for tunnel drilling construction: when the laying assembly is in the initial state, the distance between the main laying roller and the rotation axis of the drive arm is greater than the distance between the auxiliary laying roller and the rotation axis of the drive arm, and the hinge plate connects to an elastic element for driving the main laying roller to move away from the rotation axis of the drive arm.

[0017] Preferably, the aforementioned waterproof membrane laying device for tunnel drilling construction includes a drive arm comprising a basic arm, a first telescopic arm that is telescopically connected to the basic arm, a second telescopic arm that is elastically connected to the first telescopic arm, and a fixed plate connected to the second telescopic arm.

[0018] Preferably, in the aforementioned waterproof membrane laying device for tunnel drilling construction: the membrane placement component is an air shaft, which passes through the base arm and is connected to the swing arm slider. The base arm is connected to a passive gear concentrically arranged on the air shaft. The passive gear meshes with the active gear, which is driven by a motor installed on the swing arm slider.

[0019] Preferably, the aforementioned waterproof membrane laying device for tunnel drilling construction has the following features: the frame is liftable and has a crossbeam at the top, a vertical guide bracket at the bottom of the crossbeam, and the swing arm slider is slidably connected to the inside of the vertical guide bracket.

[0020] A fixed pulley is provided at the upper end of the crossbeam, and the fixed pulley is connected to a steel wire rope. The two ends of the steel wire rope are respectively connected to the swing arm slider and the frame.

[0021] The crossbeam is raised and lowered by a lifting cylinder.

[0022] Preferably, the aforementioned waterproof membrane laying device for tunnel drilling construction further includes a cleaning component connected to the fixing plate. The cleaning component includes alternately arranged brushes and nozzles, which can slide relative to the fixing plate in the Z direction.

[0023] The cleaning components, cutting tools, and nail gun are arranged in sequence along the direction of rotation of the laying components.

[0024] Preferably, the aforementioned waterproof membrane laying device for tunnel drilling construction has a radially arranged sliding bracket on the side of the fixing plate, and the cleaning component can slide along the sliding bracket.

[0025] The beneficial effects achieved by this invention are as follows:

[0026] Compared to existing technologies, this invention can complete the laying of the entire roll of material. Since the laying component is located in front of the vehicle body and is offset from the vehicle body in the tunnel axial direction, there is no need to move the vehicle laterally, thus ensuring the continuity of the operation.

[0027] The laying assembly in this invention adopts a cantilever design relative to the drive arm and the fixed plate, but the two fixed plates and the sliding connection ensure that the auxiliary laying roller and the main laying roller can slide radially along the fixed plate. The cooperation between the two auxiliary laying rollers and the main laying roller ensures that the main laying roller reliably compresses the roll material, and also ensures that the roll material can be nailed (mechanically fixed) and cut in a flattened state.

[0028] This invention enables simultaneous mechanical fixing, joint cleaning, automatic welding or bonding, and membrane cutting during the installation process, achieving a high degree of automation. This invention improves the efficiency of waterproofing construction in new tunnels and avoids the safety risks associated with traditional tunnel waterproofing work where workers spend extended periods inside the tunnel. Attached Figure Description

[0029] Figure 1 This is the overall structure of the invention. Figure 1 ;

[0030] Figure 2 This is the overall structure of the invention. Figure 2 ;

[0031] Figure 3 This invention relates to the structure of the tiling component. Figure 1 ;

[0032] Figure 4 This invention relates to the structure of the tiling component. Figure 2 ;

[0033] Figure 5 This is a structural diagram of the cleaning component of the present invention;

[0034] Figure 6 This is the present invention. Figure 4 A magnified view of a section at point H in the middle;

[0035] Figure 7 This is a structural diagram of the two fixing plates of the present invention;

[0036] Figure 8 This is a structural diagram of the Z-axis driving device, cutting component, and nail gun of the present invention;

[0037] Figure 9 This is the first working state of the tiling component of the present invention;

[0038] Figure 10 This is the second working state of the paving component of the present invention;

[0039] Figure 11 This is the third working state of the tiling component of the present invention;

[0040] Meaning of reference numerals in the attached diagram: 1-Chassis; 11-Frame; 111-Inner slide rail; 12-Crossbeam; 121-Fixed pulley; 13-Vertical guide bracket; 14-Lifting cylinder; 15-Outrigger; 16-Chassis counterweight; 161-Diagonal tie rod; 2-Basic arm; 21-First telescopic arm; 22-Second telescopic arm; 23-Swing arm counterweight; 3-Paving assembly; 4-Swing arm slider; 41-Air shaft; 42-Passive gear; 43-Motor; 5-Fixed plate; 51-Center through groove; 511-Center slide 52-Side sliding groove; 53-Hinge plate; 531-Tension spring connecting hole; 6-Main laying roller; 61-Center sliding frame; 7-Secondary laying roller; 71-Arc sliding plate; 8-Cleaning assembly; 81-Sliding bracket; 82-Roller brush shaft; 821-Brush; 83-Nozzle; 831-Rotating connecting sleeve; 84-Motor; 841-Motor bracket; 85-Cylinder; 86-Nozzle fixing bracket; 87-Pulling fork; 9-Z-direction drive device; 91-Cut piece; 92-Nail gun bracket; 93-Nail gun. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0042] like Figures 1 to 8 As shown: This embodiment discloses a waterproof membrane laying device for tunnel drilling construction, including a chassis 1 and a drive arm. The chassis 1 includes a drive wheel and a chassis counterweight 16 located at the rear. Simultaneously, a vertical frame 11 is provided at the front of the chassis 1. The frame 11 is connected to the drive arm via a swing arm slider 4 that can slide vertically along the frame 11. The vertical sliding of the swing arm slider 4 can drive the drive arm to rise and fall. To improve rigidity and strength, a diagonal tie rod 161 is preferably provided between the chassis counterweight 16 and the frame 11, which can improve the frame 11's ability to resist bending moments.

[0043] The swing arm slider 4 is equipped with a roll material placement component mounted in the Z-axis direction, and the drive arm can rotate with the roll material placement component as the rotation axis; the end of the drive arm is equipped with a laying component 3. For example... Figure 1 As shown, in this embodiment, X, Y, and Z represent the lateral, vertical, and forward directions (axial direction of the tunnel) of the vehicle when it is working normally (driving straight ahead along the bottom of the tunnel). The lateral and vertical directions of the vehicle can both represent a certain radial direction of the tunnel. The radial direction described in this embodiment is based on the tunnel cross-section.

[0044] The chassis 1 is preferably equipped with outriggers 15 to improve the stability and support of the chassis 1 during operation. The outriggers 15 are usually hydraulic outriggers in the existing technology to ensure the stability of the vehicle body during operation. There should be at least one pair of hydraulic outriggers in the front, which are distributed on the left front and right front of the vehicle respectively.

[0045] The drive arm in this embodiment preferably has three sections, specifically including a basic arm 2, a first telescopic arm 21 telescopically connected to the basic arm 2, and a second telescopic arm 22 elastically connected to the first telescopic arm 21. The first telescopic arm 21 can be telescopically extended relative to the basic arm 2 using any existing technology, such as rope drive, hydraulic cylinder drive, winch drive, etc. The specific structure is not limited or described in this embodiment, nor is it illustrated in the figures. The elastic extension and retraction of the second telescopic arm 22 relative to the first telescopic arm 21 can use a spring, as is common in the prior art. The elastic stroke between the two is not large, typically around 20-30 cm, used to compensate for the extension and retraction error or the corresponding speed of extension and retraction between the basic arm 2 and the first telescopic arm 21. A swing arm counterweight 23 is preferably located at the other end of the basic arm 2. The second telescopic arm 22 is connected to a fixing plate 5 and is typically located between two fixing plates 5.

[0046] The preferred component for placing the roll material is an air shaft 41. The air shaft 41 passes through the base arm 2 and is connected to the swing arm slider 4. It should be noted that the base arm 2 bears a very large weight and torque during operation. Therefore, the connection strength and reliable connection area between the base arm 2 and the swing arm slider 4 must be large enough to fully withstand the bending moment, torque and gravity borne by the base arm 2 during operation.

[0047] The basic arm 2 is connected to a passive gear 42 that is concentrically arranged with the air shaft 41. The passive gear 42 meshes with the active gear, which is driven by a motor 43 installed on the swing arm slider 4, thereby driving the laying assembly 3 to rotate around the air shaft 41.

[0048] In this embodiment, the frame 11 is height-adjustable and is also provided with a crossbeam 12 at the upper end. In a specific design, the frame 11 includes two parallel vertically arranged square tubes. The lower part of the square tubes is connected to the chassis 1, and the upper end is connected to the chassis counterweight 16 at the rear end through a diagonal tie rod 161.

[0049] The two ends of the crossbeam 12 are inserted into the interior of the frame 11 through two square tubes. At the lower end of the center position of the crossbeam 12, there is a vertical guide bracket 13, and the swing arm slider 4 is slidably connected to the interior of the vertical guide bracket 13. The vertical guide bracket 13 has a certain thickness and strength. In order to prevent it from deforming, an inner slide rail 111 is also provided on the inner side of the frame 11 (the opposite side of the two square tubes). The two ends of the swing arm slider 4 are inserted into the interior of the inner slide rail 111, so that the swing arm slider 4 is simultaneously limited by the inner slide rail 111 and the vertical guide bracket 13.

[0050] In this embodiment, the crossbeam 12 is driven to rise and fall by the lifting cylinder 14. Specifically, the driving method is as follows: a fixed pulley 121 is provided at the upper end of the crossbeam 12, and a steel wire rope is connected to the fixed pulley 121 (the steel wire rope passes around the fixed pulley 121). The two ends of the steel wire rope are respectively connected to the swing arm slider 4 and the frame 11. The lifting connection method here can refer to the lifting principle of a forklift in the prior art. That is, during the lifting process, when the crossbeam 12 drives the fixed pulley 121 to move upward, one end of the steel wire rope connected to the frame 11 is fixed, while the other end pulls the swing arm slider 4 to slide upward synchronously, but its sliding speed is twice the extension and retraction speed of the lifting cylinder 14.

[0051] The paving assembly 3 is the key technology of this embodiment. The paving assembly 3 of this embodiment includes a fixing plate 5 connected to the end of the drive arm (second telescopic arm 22). The fixing plate 5 connects two auxiliary paving rollers 7 arranged in the Z direction and a main paving roller 6 arranged between the two auxiliary paving rollers 7.

[0052] One auxiliary laying roller 7 is connected to the main laying roller 6 by a cutting element 91 for cutting the roll material, and the other auxiliary laying roller 7 is connected to the main laying roller 6 by a nail gun 93 for nailing the roll material to the tunnel wall. Both the cutting element 91 and the nail gun 93 are connected to a Z-axis drive device 9, the end of which is mounted on a fixing plate 5 and drives the cutting element 91 and the nail gun 93 to move along the Z-axis. The Z-axis drive device 9 can adopt a lead screw guide structure as used in the prior art. The function of the Z-axis drive device 9 is to drive the cutting element 91 and the nail gun 93 to move along the Z-axis, ensuring that the nail gun 93 can nail the nails to the tunnel wall sequentially, and also ensuring that the cutting element 91 can completely cut the roll material. The Z-axis drive device 9 fixes the nail gun 93 through a nail gun bracket 92, meaning that the Z-axis drive device 9 can simultaneously drive the cutting element 91 and the nail gun 93 to move along the Z-axis.

[0053] The cutting component 91 can use a rotary cutter or pneumatic scissors as in the prior art. However, in actual operation, since a roll of material needs to overlap to connect the beginning and end, the cutting component 91 needs to avoid cutting the outer roll (closer to the inner wall of the tunnel) during operation.

[0054] In this embodiment, there are two fixing plates 5, which are arranged parallel to each other and parallel to the XY plane. A radially arranged central through groove 51 is provided in the center of each fixing plate 5, and arc-shaped side sliding grooves 52 are provided on both sides of the central through groove 51. The central shaft of the main laying roller 6 is slidably connected to the central through groove 51 via a central sliding frame 61, and two auxiliary laying rollers 7 are slidably connected to the two side sliding grooves 52 respectively. A central sliding groove 511 is provided on the side of the central through groove 51, and the central shaft of the main laying roller 6 is radially slidably connected to the central sliding groove 511 via the central sliding frame 61. Preferably, the two are engaged by rolling friction, for example, by setting ball bearings between them.

[0055] Regarding the fit between the auxiliary laying roller 7 and the fixed plate 5, the central axis of the auxiliary laying roller 7 is connected to two arc-shaped sliding plates 71. These two arc-shaped sliding plates 71 are located on the outer sides of the fixed plate 5, acting as a clamping mechanism between the two plates. The connection between the auxiliary laying roller 7 and the fixed plate 5 is a rolling connection. Specifically, rollers can be placed between the fixed plate 5 and the arc-shaped sliding plates 71 to prevent jamming during sliding. In practical applications, attention should be paid to lubrication and sealing of the aforementioned rolling connection to prevent dust and impurities from entering the mating area.

[0056] As can be seen from the above description, in this embodiment, the main laying roller 6 and the auxiliary laying roller 7 adopt a cantilever beam design relative to the fixed plate 5. During actual operation, the main laying roller 6 and the auxiliary laying roller 7 need to slide (radially move) relative to the fixed plate 5, and they also need to support the roll material and adhere it to the inner wall of the tunnel. Therefore, to ensure the normal sliding and radial support of the main laying roller 6 and the auxiliary laying roller 7 relative to the fixed plate 5, this embodiment uses arc-shaped sliding plates 71 on both sides of the central axis of the auxiliary laying roller 7 to clamp the two fixed plates 5. This increases the bending moment and support force borne by the auxiliary laying roller 7 during operation, and also ensures radial sliding even under large bending moments and support forces.

[0057] The main laying roller 6 is connected by a hinge plate 53 located between two fixed plates 5. The two ends of the hinge plate 53 are respectively hinged to the central axis of the main laying roller 6 and the central axis of the auxiliary laying roller 7, and the center of the hinge plate 53 is hinged to the fixed plate 5. The hinge point between the hinge 53 and the fixed plate 5 is preferably the center of the arc of the side sliding groove 52. Furthermore, to avoid interference during the radial sliding process of the main laying roller 6 and the auxiliary laying roller 7, the connecting hole between the hinge plate 53 and both is preferably a slotted hole.

[0058] When the paving assembly 3 is in its initial state (not in contact with the inner wall of the tunnel), the distance between the main paving roller 6 and the rotation axis of the drive arm (air expansion shaft 41) is greater than the distance between the auxiliary paving roller 7 and the rotation axis of the drive arm. This means that when the paving assembly 3 begins paving operations, the main paving roller 6 contacts the inner wall of the tunnel first. The hinge plate 53 connects an elastic element for driving the main paving roller 6 to move away from the rotation axis of the drive arm, specifically as follows... Figure 7 The tension spring connection hole 531 in the tunnel has a tension spring attached inside, which is used to move the auxiliary paving roller 7 toward the direction of rotation of the drive arm, so as to ensure that the main paving roller 6 has a certain elastic force to press against the inner wall of the tunnel.

[0059] Since the joints of each roll of waterproof membrane need to be glued together, and the waterproof membrane is inevitably contaminated by gravel and mud during the laying process, the joints need to be cleaned before gluing. This embodiment also includes a cleaning component 8 connected to the fixing plate 5. The cleaning component 8 includes alternately arranged brushes 821 and nozzles 83, which can slide relative to the fixing plate 5 in the Z direction. The brushes 821 are fixed to the roller brush shaft 82, which is driven by a motor. The spraying end of the nozzle 83 is fixed to the outside of the roller brush shaft 82 via a rotating connecting sleeve 831 (the rotating connecting sleeve 831 can rotate relative to the roller brush shaft 82), and the other end of the nozzle 83 is fixed to the nozzle fixing bracket 86. The nozzle 83 can spray room temperature or high temperature gas. When spraying room temperature gas, it works with the brush to clean. After cleaning, the joints of the membrane need to be heated to achieve a seal, which requires spraying high temperature gas. The side of the fixed plate 5 is provided with a radially arranged sliding bracket 81, which is installed between the two fixed plates 5.

[0060] The cleaning component 8 can slide radially along the sliding bracket 81, and its sliding action can be driven by a cylinder in the prior art. It should be noted that in this embodiment, both the nozzle 83 and the brush 821 can slide axially along the Z-axis. This has the advantage of making the cleaning of the roll material more thorough and facilitating the alternating distribution of the brush 821 and the nozzle. During the hot air heating process through the nozzle, it can also play a role in uniform heating and achieve a better sealing effect.

[0061] Since the waterproof membrane between adjacent rolls also needs to be sealed, the nozzle 83 and brush 821 in this embodiment do not only work at the joint of the membrane during actual operation. During the membrane laying process, when the cleaning component 8 does not move to the joint, the cleaning component 8 is at the end closest to the drive arm, used to clean and heat the already laid and adjacent membrane.

[0062] Both the roller brush shaft 82 and the nozzle holder 86 are axially driven by the same fork 87. In practical applications, the outer surfaces of both the roller brush shaft 82 and the nozzle holder 86 can mate with the fork 87 via convex rings. The specific structure is common knowledge to those skilled in the art. The fork 87 is connected to a cylinder 85 mounted on the sliding bracket 81. Both the roller brush shaft 82 and the nozzle holder 86 can move axially relative to the sliding bracket 81. The nozzle holder 86 only serves to fix the nozzle tail end. The torque transmission between the roller brush shaft 82 and the motor 84 can use a spline drive, a method that allows the roller brush shaft 82 to move axially relative to the motor 84 within a certain range. This spline drive is located inside the motor bracket 841.

[0063] contrast Figures 9 to 11In this embodiment, the cleaning component 8, the cutting component 91, and the nail gun 93 are arranged sequentially along the direction of rotation of the laying component 3. Figures 9 to 11 The numbers represent sequential working states, meaning that angles A, B, and C increase sequentially.

[0064] During operation, the vehicle body is first adjusted to be centered in the tunnel. Then, the roll of material is placed over the air expansion shaft 41 and manually wound around the outside of the laying assembly 3. The roll is extended by the first telescopic arm 21, and its starting point is fixed to a position on the tunnel wall, typically at a height easily accessible to the operator. The first telescopic arm 21 ensures that both the auxiliary laying roller 7 and the main laying roller 6 are in contact with the inner surface of the tunnel. In this state, the force between the main laying roller 6 and the tunnel wall is relatively large, and the auxiliary laying rollers 7 on both sides also exert a certain force on the tunnel wall. This straightens and tensions the roll of material between the auxiliary laying rollers 7 and the main laying roller 6, facilitating cutting or nailing. As the laying assembly 3 rotates along the tunnel wall, the nail gun 93 can nail at intervals as needed. Multiple nail guns 93 are typically used and can move along the tunnel direction 9 (Z-axis) under the drive of the Z-axis drive device 9.

[0065] Figures 9 to 11 In the diagram, the bold lines Q and P represent the beginning and end of the same roll of roofing material, respectively. Q indicates the roofing material that is laid first in the tunnel, where Q1 represents the starting position of the roofing material. P indicates the roofing material that will be joined to the previously laid roofing material after this roll is completed. Figure 9 The text indicates that the roll material is about to be joined. In this state, the cleaning component 8 works to clean the inside of the first end of the roll material and automatically weld or bond it.

[0066] Figure 10 The state indicates that after rotating a certain angle, the roll of material has been connected end to end under the pressure of the laying component 3, and the end of the roll needs to be cut. Figure 11 It is indicated that after cutting, the seams will be nailed in place.

[0067] Then, the vehicle moves forward or backward to lay the next round. When laying the next round, it is necessary to ensure that the next round is connected to the already laid round. Therefore, in practical applications, it is usually necessary to clean and heat the laid end through the cleaning component 8 to ensure the sealed connection of adjacent rolls of material. This invention can also achieve this function.

[0068] Compared with the prior art, the present invention can complete the laying of the entire roll of material. Since the laying component 3 is located in front of the vehicle body and is offset from the vehicle body in the tunnel axial direction, there is no need to move the vehicle laterally, thus ensuring the continuity of the operation.

[0069] In this invention, the laying assembly 3 adopts a cantilever design relative to the drive arm and the fixed plate 5. However, the two fixed plates 5 and the sliding connection ensure that the auxiliary laying roller 7 and the main laying roller 6 can slide radially along the fixed plate 5. The cooperation between the two auxiliary laying rollers 7 and the main laying roller 6 ensures that the main laying roller 6 reliably compresses the roll material, and also ensures that the roll material can be nailed and cut in a flattened state.

[0070] This invention enables simultaneous nailing, joint cleaning, automatic welding or bonding, and membrane cutting during the installation process, achieving a high degree of automation. This invention improves the efficiency of waterproofing construction in new tunnels and avoids the safety risks associated with traditional tunnel waterproofing work where workers spend extended periods inside the tunnel.

[0071] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A waterproof membrane laying device for tunnel drilling construction, characterized in that: Includes a chassis (1) and a drive arm. The chassis (1) is provided with a vertical frame (11). The frame (11) is connected to the drive arm via a swing arm slider (4) that can slide vertically along the frame (11). The swing arm slider (4) is provided with a roll material placement component installed in the Z direction. The drive arm can rotate around the roll material placement component as the rotation axis. The end of the drive arm is provided with a laying component (3); The paving assembly (3) includes a fixing plate (5) connected to the end of the drive arm. The fixing plate (5) connects two auxiliary paving rollers (7) arranged in the Z direction and a main paving roller (6) arranged between the two auxiliary paving rollers (7). One of the auxiliary laying rollers (7) is provided with a cutting piece (91) for cutting the roll material between the main laying roller (6) and the other auxiliary laying roller (7) is provided with a nail gun (93) for nailing the roll material to the inner wall of the tunnel between the main laying roller (6). There are two fixing plates (5), which are arranged in parallel and parallel to the XY plane; The fixed plate (5) has a radially arranged central through groove (51) at its center, and arc-shaped side sliding grooves (52) are provided on both sides of the central through groove (51). The central shaft of the main laying roller (6) is slidably connected to the central through groove (51) through the central sliding frame (61), and the two auxiliary laying rollers (7) are slidably connected to the two side sliding grooves (52) respectively. The main laying roller (6) is connected by a hinge plate (53) located between two fixed plates (5), and the two ends of the hinge plate (53) are respectively hinged to the central axis of the main laying roller (6) and the central axis of the auxiliary laying roller (7), and the center of the hinge plate (53) is hinged to the fixed plate (5). The side of the central through groove (51) is provided with a central sliding groove (511). The central shaft of the main laying roller (6) is slidably connected to the central sliding groove (511) through the central sliding frame (61). The central shaft of the auxiliary laying roller (7) is connected to two arc sliding plates (71). The two arc sliding plates (71) are located on the outside of the fixed plate (5) and are in a rolling connection with the fixed plate (5). When the tiling assembly (3) is in the initial state, the distance between the main tiling roller (6) and the rotation axis of the drive arm is greater than the distance between the auxiliary tiling roller (7) and the rotation axis of the drive arm. The hinge plate (53) is connected to an elastic element for driving the main tiling roller (6) to move away from the rotation axis of the drive arm. The drive arm includes a base arm (2), a first telescopic arm (21) telescopically connected to the base arm (2), and a second telescopic arm (22) elastically connected to the first telescopic arm (21). The second telescopic arm (22) is connected to a fixed plate (5). The frame (11) is height-adjustable and is provided with a crossbeam (12) at the upper end. The lower end of the crossbeam (12) is provided with a vertical guide bracket (13). The swing arm slider (4) is slidably connected to the inside of the vertical guide bracket (13). The upper end of the crossbeam (12) is provided with a fixed pulley (121), the fixed pulley (121) is connected to a steel wire rope, and the two ends of the steel wire rope are respectively connected to the swing arm slider (4) and the frame (11). The crossbeam (12) is driven to rise and fall by a lifting cylinder (14); X, Y, and Z represent the lateral, vertical, and forward directions of the vehicle during normal operation, respectively. The lateral and vertical directions of the vehicle represent a certain radial direction of the tunnel, with the tunnel cross-section as a reference.

2. The waterproof membrane laying device for tunnel drilling construction according to claim 1, characterized in that: The cutting piece (91) and the nail gun (93) are both connected to the Z-axis drive device (9). The end of the Z-axis drive device (9) is mounted on the fixing plate (5) and is used to drive the cutting piece (91) and the nail gun (93) to move along the Z-axis.

3. The waterproof membrane laying device for tunnel drilling construction according to claim 1, characterized in that: The roll material placement component is an air shaft, which passes through the base arm (2) and is connected to the swing arm slider (4). The base arm (2) is connected to a passive gear (42) concentrically arranged on the air shaft. The passive gear (42) meshes with the active gear, which is driven by a motor (43) installed on the swing arm slider (4).

4. The waterproof membrane laying device for tunnel drilling construction according to claim 2, characterized in that: It also includes a cleaning assembly (8) connected to the fixed plate (5), the cleaning assembly (8) including alternating brushes (821) and nozzles (83), the brushes (821) and nozzles (83) being slidable relative to the fixed plate (5) in the Z direction; The cleaning component (8), the cutting component (91), and the nail gun (93) are arranged in sequence along the direction of rotation of the laying component (3).

5. The waterproof membrane laying device for tunnel drilling construction according to claim 4, characterized in that: The side of the fixed plate (5) is provided with a radially arranged sliding bracket (81), and the cleaning component (8) can slide along the sliding bracket (81).

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