Tunnel waterproof material laying device and laying method

Abstract

The present invention belongs to the technical field of tunnel construction, and discloses a tunnel waterproof material laying device and laying method; the device comprises a machine body, a rotating shaft, a laying mechanism, a driving mechanism and a transmission mechanism; the rotating shaft is rotatably connected to the machine body; the laying mechanism comprises a support plate, an elastic pressure roller, waterproof material one and waterproof material two; a holding mechanism is arranged on one side of the laying mechanism; the function of alternately laying waterproof material one and waterproof material two can be realized, and there is no need to perform a resetting operation of the waterproof material, thereby improving the laying efficiency of the waterproof material on the inner wall of the tunnel; the holding mechanism can be driven to operate by contacting the transmission mechanism through the holding mechanism; holding the waterproof material two or the waterproof material one by the holding mechanism effectively avoids the dispersion of the waterproof material on one side, facilitates the subsequent threading operation of the waterproof material, and further improves the laying efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a tunnel waterproof material laying device and a laying method. Background Art

[0002] The structure of the tunnel consists of two parts: the main building and ancillary equipment. The main building consists of the tunnel body and the tunnel portal. The ancillary equipment includes a car shelter, fire-fighting facilities, emergency communications and drainage facilities. During tunnel construction, a waterproof material laying device is required to lay the waterproof material on the inner wall of the tunnel.

[0003] When a traditional tunnel waterproof material laying device is used, the rolled waterproof material is rotated and laid along the inner wall of the tunnel by rotating the rotating arm. When the thickness of the rolled waterproof material gradually decreases, an additional lifting drive mechanism is required to raise the rotating arm to make the waterproof material fit the inner wall of the tunnel. This results in a complex structure and high cost for such laying devices.

[0004] A Chinese patent with the authorization announcement number CN114046163B discloses a device for laying waterproof materials for tunnels. By setting an elastic roller on the upper part of the waterproof material, threading the waterproof material on the upper part of the elastic roller, and then tightly fitting the waterproof material to the inner wall of the tunnel through the elastic roller, it is possible to achieve the effect of always making the waterproof material fit the inner wall of the tunnel without the need for an additional lifting drive mechanism, thereby saving the device cost. However, when laying waterproof materials, such devices lay them from one side to the other side. After one laying is completed, the waterproof material needs to be rotated and reset before the next laying can be carried out. The reset operation takes a certain amount of time, which leads to a low laying efficiency of the waterproof material. In addition, the waterproof material lacks a holding structure, and is prone to dispersion during the rotation and reset process of the waterproof material, which brings inconvenience to the subsequent threading operation. Summary of the invention

[0005] The present invention overcomes the shortcomings of the prior art and proposes a tunnel waterproof material laying device and laying method; the present invention is achieved through the following technical solutions:

[0006] A tunnel waterproof material laying device, comprising a machine body, a rotating shaft, a laying mechanism, a driving mechanism and a transmission mechanism; the rotating shaft is rotatably connected to the machine body; the laying mechanism comprises a support plate, an elastic pressure roller, a first waterproof material and a second waterproof material; the bottoms of the two support plates are respectively fixed at both ends of the rotating shaft, and the elastic pressure roller, the first waterproof material and the second waterproof material are rotatably arranged between the two support plates; the first waterproof material and the second waterproof material are symmetrically arranged below the elastic pressure roller;

[0007] A holding mechanism is rotatably arranged between the two support plates, and the holding mechanism includes two symmetrically arranged damping shafts, which are respectively rotatably connected to the two support plates; a connecting rod is arranged at the outer end of the damping shaft, and a connecting plate is arranged at the inner end of the damping shaft, and a holding rod 1 and a holding rod 2 are respectively connected between the two connecting plates; the holding rod 1 is located at the outer side of the bottom of the waterproof material 1, and the holding rod 2 is located at the outer side of the bottom of the waterproof material 2;

[0008] Transmission mechanisms are respectively arranged at the four corners of the machine body, and the transmission mechanism comprises a shell arranged on the machine body, a spring is arranged on the inner bottom surface of the shell, a transmission rod is arranged on the upper end of the spring, and the top of the transmission rod extends out of the shell and is slidably connected to the shell;

[0009] The connecting rod and the two transmission rods on the same side are located in the same vertical plane. When the connecting rod rotates downward along an arc around the rotation axis following the laying mechanism, the connecting rod contacts one of the transmission rods on the same side.

[0010] The driving mechanism is connected to the rotating shaft, and the driving mechanism drives the rotating shaft to rotate forward or reverse.

[0011] Furthermore, the axial direction of the first pressing rod is consistent with that of the first waterproof material; the axial direction of the second pressing rod is consistent with that of the second waterproof material.

[0012] Furthermore, the machine body is symmetrically provided with two annular plates, which are passed through the support plate on the same side and are slidably connected with the support plate.

[0013] Furthermore, the machine body is a symmetrical stepped structure, divided into an upper part and a lower part; the upper part of the machine body is a platform structure, which is used to fix and support the rotating shaft, the laying mechanism and the driving mechanism; the bottom of the platform structure is a cavity structure, and the lower part of the machine body is provided with universal wheels.

[0014] Furthermore, the driving mechanism includes a motor arranged on the body platform structure, a worm is arranged at the output end of the motor, the worm is rotatably connected to the body, a worm wheel is meshingly connected to the outer surface of the worm, and the worm wheel is fixedly connected to the rotating shaft.

[0015] Furthermore, the worm and the machine body, and the rotating shaft and the machine body are all rotatably connected via bearings.

[0016] Furthermore, a buffer block is provided on the outer surface of the transmission rod away from the spring. When the spring is reset to push the transmission rod upward, the transmission rod is buffered and protected by the buffer block.

[0017] A method for laying a tunnel waterproof material, using the above-mentioned tunnel waterproof material laying device, comprises the following steps:

[0018] S1: insert the waterproof material joint on the waterproof material 1 on the outside of the elastic pressure roller, then rotate the connecting rod to rotate the damping shaft, and drive the pressing rod 2 to press the waterproof material 2 through the rotation of the connecting plate to prevent the waterproof material on the waterproof material 2 from unfolding;

[0019] S3: Start the driving mechanism to drive the rotating shaft to rotate, so that the support plate, the elastic pressure roller, the waterproof material 1 and the waterproof material 2 rotate in the left circumferential direction; the waterproof material 1 on the elastic pressure roller moves along the inner wall of the tunnel to lay the waterproof material 1;

[0020] S4: When the support plate, the elastic pressure roller, the waterproof material 1 and the waterproof material 2 rotate to the left circumferentially by more than 180°, the elastic pressure roller separates from the inner wall of the tunnel; at this time, the connecting rod contacts the transmission rod on the left, and the elastic force of the spring causes the connecting rod to rotate in the opposite direction, causing the connecting plate to rotate in the opposite direction and drive the holding rod 1 to hold the waterproof material 1; at the same time, the holding rod 2 separates from the waterproof material 2;

[0021] S5: Cut the waterproof material 1, and then put the waterproof material 2 on the outside of the elastic pressure roller, and then start the driving mechanism to make the rotating shaft rotate in the opposite direction, so that the supporting plate, the elastic pressure roller, the waterproof material 1 and the waterproof material 2 rotate in the right circumferential direction. In this process, the waterproof material 2 is closely attached to the inner wall of the tunnel by the elastic pressure roller, and the waterproof material 2 is laid;

[0022] S6: When the support plate, the elastic pressure roller, the waterproof material 1 and the waterproof material 2 rotate to the right by more than 180°, the elastic pressure roller separates from the inner wall of the tunnel. At this time, the connecting rod contacts the transmission rod on the right, and the elastic force of the spring causes the connecting rod to rotate, thereby causing the connecting plate to rotate. The connecting plate drives the holding rod 2 to hold the waterproof material 2, and at the same time, the holding rod 1 separates from the waterproof material 1; then the waterproof material 2 is cut; then the waterproof material 1 is inserted onto the outside of the elastic pressure roller, and the operation of step S3 is repeated, and so on, and the laying of the waterproof material 1 and the waterproof material 2 on the inner wall of the tunnel is completed by alternating operations.

[0023] The beneficial effects of the present invention compared with the prior art are as follows:

[0024] The present invention realizes the function of alternately laying waterproof material one and waterproof material two in the laying mechanism by arranging a laying mechanism, a driving mechanism, a transmission mechanism and a pressing mechanism, so that when the device is in use, there is no need to perform a resetting operation of the waterproof material, which can save unnecessary time and thus improve the laying efficiency of the waterproof material for the inner wall of the tunnel. Before the waterproof material one or the waterproof material two is laid, the waterproof material two or the waterproof material one can be pressed by the pressing mechanism (the pressing mechanism is in contact with the transmission mechanism, which can drive the pressing mechanism to operate and complete the pressing of the waterproof material two or the waterproof material one), effectively avoiding the dispersion of the waterproof material two or the waterproof material one, thereby facilitating the subsequent threading operation of the waterproof material two or the waterproof material one, and further improving the laying efficiency of the waterproof material for the inner wall of the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 For the present invention Figure 1 A schematic diagram of the structure of the laying mechanism;

[0027] Figure 3 For the present invention Figure 2 A schematic diagram of the structure of the pressing mechanism;

[0028] Figure 4 For the present invention Figure 1 A schematic diagram of the structure of the transmission mechanism in FIG.

[0029] Figure 5 For the present invention Figure 4 Schematic diagram of the structure of the transmission rod.

[0030] Description of the numbers in the figure:

[0031] 1. Machine body; 2. Rotating shaft; 3. Annular plate; 4. Laying mechanism; 41. Support plate; 42. Elastic pressure roller; 43. Waterproof material 1; 44. Waterproof material 2; 5. Driving mechanism; 51. Motor; 52. Worm; 53. Worm wheel; 6. Transmission mechanism; 61. Housing; 62. Spring; 63. Transmission rod; 7. Holding mechanism; 71. Damping shaft; 72. Connecting rod; 73. Connecting plate; 74. Holding rod 1; 75. Holding rod 2; 8. Buffer block. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail in conjunction with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. The technical solutions of the present invention are described in detail below in conjunction with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0033] See also Figures 1 to 5 An embodiment of the present invention provides a tunnel waterproof material laying device and a laying method. The tunnel waterproof material laying device includes a body 1, a rotating shaft 2, a laying mechanism 4, a driving mechanism 5 and a transmission mechanism 6.

[0034] The body 1 is a symmetrical stepped structure, which can be divided into an upper part and a lower part. The upper part of the body 1 is a platform structure, which is used to fix and support the rotating shaft 2, the laying mechanism 4 and the driving mechanism 5; the bottom of the platform structure is a cavity structure, and the body 1 can be driven to rise and fall from the cavity structure by a hydraulic cylinder, thereby realizing the overall lifting and lowering of the rotating shaft 2, the laying mechanism 4 and the driving mechanism 5 to adapt to different tunnel heights; the lower part of the body 1 is provided with universal wheels for moving the device. This structure of the body 1 is widely used in existing tunnel waterproof material laying devices.

[0035] like Figure 1 and Figure 2 As shown, both ends of the rotating shaft 2 are rotatably connected to the inner surface of the machine body 1; the laying mechanism 4 includes a support plate 41, an elastic pressure roller 42, a waterproof material 1 43 and a waterproof material 2 44; the bottoms of the two support plates 41 are respectively fixed to both ends of the rotating shaft 2, and the elastic pressure roller 42, the waterproof material 1 43 and the waterproof material 2 44 are rotatably arranged between the two support plates 41; the waterproof material 1 43 and the waterproof material 2 44 are symmetrically arranged below the elastic pressure roller 42, wherein the waterproof material 1 43 and the waterproof material 2 44 are both rolled-up reel-like structures.

[0036] A holding mechanism 7 is rotatably arranged between the two support plates 41. Figure 1 , Figure 2 and Figure 3 As shown, the pressing mechanism 7 includes two symmetrically arranged damping shafts 71, and the two damping shafts 71 are respectively connected to the two support plates 41 for rotation; the outer end of the damping shaft 71 is provided with a connecting rod 72, and the inner end of the damping shaft 71 is provided with a connecting plate 73, and the connecting plate 73 is located on the inner side of the support plate 41, and a pressing rod 1 74 and a pressing rod 2 75 are respectively arranged between the two connecting plates 73. The pressing rod 1 74 is located on the outer side of the bottom of the waterproof material 1 43, and the axial direction of the pressing rod 1 74 and the waterproof material 1 43 are consistent; the pressing rod 2 75 is located on the outer side of the bottom of the waterproof material 2 44, and the axial direction of the pressing rod 2 75 and the waterproof material 2 44 are consistent. Rotating the connecting rod 72 rotates the damping shaft 71, and then drives the connecting plate 73 to rotate, and then drives the pressing rod 1 74 to contact and press the waterproof material 1 43 through the rotation of the connecting plate 73, or drives the pressing rod 2 75 to contact and press the waterproof material 2 44.

[0037] like Figure 1 and Figure 2As shown, two annular plates 3 are symmetrically arranged on the top of the platform structure of the body 1. The annular plates 3 are passed through the support plates 41 on the same side and are slidably connected to the support plates 41. The annular plates 3 act as guide rails, which can provide limited support for the support plates 41 and improve the stability of the laying mechanism 4.

[0038] like Figure 1 and Figure 2 As shown, the driving mechanism 5 includes a motor 51 disposed on the platform structure of the machine body 1, a worm 52 is disposed at the output end of the motor 51, the worm 52 is rotatably connected to the machine body 1, a worm wheel 53 is meshedly connected to the outer surface of the worm 52, and the worm wheel 53 is fixedly connected to the rotating shaft 2. The worm 52 and the machine body 1, and the rotating shaft 2 and the machine body 1 are all rotatably connected through bearings, which can reduce rotational friction, thereby facilitating the rotation of the worm 52 and the rotating shaft 2.

[0039] like Figure 1 , Figure 4 and Figure 5 As shown, a transmission mechanism 6 is respectively arranged at the four corners of the body 1, and the transmission mechanism 6 includes a shell 61 arranged on the outer surface of the body 1, a spring 62 is arranged on the inner bottom surface of the shell 61, and a transmission rod 63 is arranged on the upper end of the spring 62. The top of the transmission rod 63 extends out of the shell 61 and is slidably connected to the shell 61.

[0040] like Figure 4 and Figure 5 As shown, a buffer block 8 is provided on the outer surface of the transmission rod 63 away from the spring 62. When the spring 62 is reset and pushes the transmission rod 63 upward, the buffer block 8 provides buffer protection for the transmission rod 63.

[0041] The connecting rod 72 and the two transmission rods 63 on the same side are located in the same vertical plane. When the connecting rod 72 rotates downward along an arc around the rotating shaft 2 following the laying mechanism 4, the connecting rod 72 contacts one of the transmission rods 63 on the same side.

[0042] A method for laying a tunnel waterproof material, using the above-mentioned tunnel waterproof material laying device for laying, the specific steps are as follows:

[0043] S1: Install waterproof material 1 43 and waterproof material 2 44.

[0044] S2: After the installation is completed, the waterproof material joint on the waterproof material 1 43 is inserted into the outside of the elastic pressure roller 42, and then the connecting rod 72 is rotated to rotate the damping shaft 71, thereby driving the connecting plate 73 to rotate, and then the connecting plate 73 is rotated to drive the holding rod 2 75 to contact the waterproof material 2 44, press it, and prevent the waterproof material on the waterproof material 2 44 from unfolding.

[0045] S3: Then start the motor 51, the output end of the motor 51 rotates forward to drive the worm 52 to rotate forward, and then the worm 52 rotates forward to drive the worm wheel 53 to rotate forward, which can drive the rotating shaft 2 to rotate, so that the support plate 41, the elastic pressure roller 42, the waterproof material 43 and the waterproof material 44 rotate in the left circumferential direction; the waterproof material 43 inserted on the elastic pressure roller 42 moves along the inner wall of the tunnel to lay the waterproof material 43; in this process, since the waterproof material 43 is inserted on the outer side of the elastic pressure roller 42, the waterproof material 43 can be tightly attached to the inner wall of the tunnel through the circumferential rotation and self-rotation of the elastic pressure roller 42.

[0046] S4: When the support plate 41, the elastic pressure roller 42, the waterproof material 1 43 and the waterproof material 2 44 rotate to the left circumferentially by more than 180°, the elastic pressure roller 42 separates from the inner wall of the tunnel. At this time, the connecting rod 72 contacts the transmission rod 63 on the left. The elastic force of the spring 62 causes the connecting rod 72 to rotate in the opposite direction. The reverse rotation of the connecting rod 72 can drive the damping shaft 71 to rotate in the opposite direction, thereby causing the connecting plate 73 to rotate in the opposite direction. The reverse rotation of the connecting plate 73 can drive the holding rod 1 74 to contact the waterproof material 1 43, thereby holding the waterproof material 1 43. At the same time, the holding rod 2 75 separates from the waterproof material 2 44.

[0047] S5: Then the waterproof material 1 43 can be cut, and the waterproof material 2 44 is inserted on the outside of the elastic pressure roller 42, and then the motor 51 is started, and the output end of the motor 51 reverses to drive the worm 52 to reverse, so that the rotating shaft 2 rotates in the opposite direction, and the supporting plate 41, the elastic pressure roller 42, the waterproof material 1 43 and the waterproof material 2 44 rotate in the right circumferential direction through the reverse rotation of the rotating shaft 2. In this process, the waterproof material 2 44 is closely attached to the inner wall of the tunnel through the elastic pressure roller 42, and the waterproof material 2 44 is laid;

[0048] S6: When the support plate 41, the elastic pressure roller 42, the waterproof material 1 43 and the waterproof material 2 44 rotate to the right by more than 180°, the elastic pressure roller 42 separates from the inner wall of the tunnel. At this time, the connecting rod 72 contacts the transmission rod 63 on the right side. The elastic force of the spring 62 causes the connecting rod 72 to rotate. The damping shaft 71 is then driven to rotate by the rotation of the connecting rod 72, thereby causing the connecting plate 73 to rotate. The connecting plate 73 drives the holding rod 2 75 to contact the waterproof material 2 44 to hold the waterproof material 2 44. The holding rod 74 is separated from the waterproof material 43; then the waterproof material 44 can be cut; then the waterproof material 43 is inserted into the outside of the elastic pressure roller 42, and the operation of step S3 is repeated. By analogy, the laying of the waterproof material 43 and the waterproof material 44 on the inner wall of the tunnel can be completed by alternating operations. In this process, the spring 62 is set to ensure that after the thickness of the waterproof material 43 and the waterproof material 44 changes, the holding rod 74 or the holding rod 75 can contact and hold the waterproof material 44.

[0049] The above content is a further detailed description of the present invention in combination with a specific preferred embodiment. It cannot be determined that the specific embodiments of the present invention are limited to this. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the present invention, which should be regarded as belonging to the present invention and the scope of patent protection determined by the submitted claims.

Claims

1. A tunnel waterproof material laying device, characterized in that: The invention comprises a machine body (1), a rotating shaft (2), a laying mechanism (4), a driving mechanism (5) and a transmission mechanism (6); the rotating shaft (2) is rotatably connected to the machine body (1); the laying mechanism (4) comprises a support plate (41), an elastic pressure roller (42), a first waterproof material (43) and a second waterproof material (44); the bottoms of the two support plates (41) are respectively fixed to the two ends of the rotating shaft (2); the elastic pressure roller (42), the first waterproof material (43) and the second waterproof material (44) are rotatably arranged between the two support plates (41); the first waterproof material (43) and the second waterproof material (44) are symmetrically arranged below the elastic pressure roller (42); A holding mechanism (7) is rotatably arranged between the two support plates (41), the holding mechanism (7) comprising two symmetrically arranged damping shafts (71), the two damping shafts (71) being rotatably connected to the two support plates (41) respectively; a connecting rod (72) is arranged at the outer end of the damping shaft (71), a connecting plate (73) is arranged at the inner end of the damping shaft (71), a holding rod 1 (74) and a holding rod 2 (75) are respectively connected between the two connecting plates (73); the holding rod 1 (74) is located at the outer side of the bottom of the waterproof material 1 (43), and the holding rod 2 (75) is located at the outer side of the bottom of the waterproof material 2 (44); A transmission mechanism (6) is respectively arranged at the four corners of the body (1), the transmission mechanism (6) comprising a housing (61) arranged on the body (1), a spring (62) being arranged on the inner bottom surface of the housing (61), a transmission rod (63) being arranged on the upper end of the spring (62), and a top of the transmission rod (63) extending out of the housing (61) and being slidably connected to the housing (61); The connecting rod (72) and the two transmission rods (63) on the same side are located in the same vertical plane. When the connecting rod (72) rotates downward along an arc around the rotation axis (2) following the laying mechanism (4), the connecting rod (72) contacts one of the transmission rods (63) on the same side. The elastic force of the spring (62) causes the connecting rod (72) to rotate, and then the rotation of the connecting rod (72) drives the damping shaft (71) to rotate, thereby causing the connecting plate (73) to rotate, and the first holding rod (74) presses the first waterproof material (43), while the second holding rod (75) is separated from the second waterproof material (44); or the second holding rod (75) presses the second waterproof material (44), while the first holding rod (74) is separated from the first waterproof material (43). The driving mechanism (5) is connected to the rotating shaft (2), and the driving mechanism (5) drives the rotating shaft (2) to rotate forward or reverse.

2. A tunnel waterproof material laying device according to claim 1, characterized in that: The axial direction of the first pressing rod (74) is consistent with that of the first waterproof material (43); the axial direction of the second pressing rod (75) is consistent with that of the second waterproof material (44).

3. A tunnel waterproof material laying device according to claim 1, characterized in that: The machine body (1) is symmetrically provided with two annular plates (3), and the annular plates (3) are passed through the support plate (41) on the same side and are slidably connected to the support plate (41).

4. A tunnel waterproof material laying device according to claim 1, characterized in that: The machine body (1) is a symmetrical stepped structure, which is divided into an upper part and a lower part; the upper part of the machine body (1) is a platform structure, which is used to fix and support the rotating shaft (2), the laying mechanism (4) and the driving mechanism (5); the bottom of the platform structure is a cavity structure, and the lower part of the machine body (1) is provided with universal wheels.

5. A tunnel waterproof material laying device according to claim 4, characterized in that: The driving mechanism (5) comprises a motor (51) arranged on a platform structure of a machine body (1); a worm (52) is arranged at an output end of the motor (51); the worm (52) is rotationally connected to the machine body (1); a worm wheel (53) is meshingly connected to an outer surface of the worm (52); and the worm wheel (53) is fixedly connected to a rotating shaft (2).

6. A tunnel waterproof material laying device according to claim 5, characterized in that: The worm (52) and the machine body (1), as well as the rotating shaft (2) and the machine body (1) are all rotatably connected via bearings.

7. A tunnel waterproof material laying device according to claim 1, characterized in that: A buffer block (8) is provided on the outer surface of the transmission rod (63) away from the spring (62); when the spring (62) is reset to push the transmission rod (63) upward, the buffer block (8) provides buffer protection for the transmission rod (63).

8. A method for laying tunnel waterproof material, characterized in that: The tunnel waterproof material laying device according to claim 1 comprises the following steps: S1: inserting the waterproof material joint on the waterproof material 1 (43) onto the outside of the elastic pressure roller (42), and then rotating the connecting rod (72) to rotate the damping shaft (71), and driving the pressing rod 2 (75) to press the waterproof material 2 (44) through the rotation of the connecting plate (73), so as to prevent the waterproof material on the waterproof material 2 (44) from unfolding; S3: starting the driving mechanism (5) to drive the rotating shaft (2) to rotate, so that the supporting plate (41), the elastic pressure roller (42), the waterproof material 1 (43) and the waterproof material 2 (44) rotate in the left circumferential direction; the waterproof material 1 (43) inserted on the elastic pressure roller (42) moves along the inner wall of the tunnel, and the waterproof material 1 (43) is laid; S4: When the support plate (41), the elastic pressure roller (42), the waterproof material 1 (43) and the waterproof material 2 (44) rotate in the left circumferential direction by more than 180 degrees, the elastic pressure roller (42) separates from the inner wall of the tunnel; at this time, the connecting rod (72) contacts the transmission rod (63) on the left side, and the elastic force of the spring (62) causes the connecting rod (72) to rotate in the opposite direction, causing the connecting plate (73) to rotate in the opposite direction and drive the holding rod 1 (74) to hold the waterproof material 1 (43); at the same time, the holding rod 2 (75) separates from the waterproof material 2 (44); S5: Cut the waterproof material 1 (43), and then insert the waterproof material 2 (44) onto the outside of the elastic pressure roller (42), and then start the driving mechanism (5) to make the rotating shaft (2) rotate in the opposite direction, so that the supporting plate (41), the elastic pressure roller (42), the waterproof material 1 (43) and the waterproof material 2 (44) rotate in the right circumferential direction through the reverse rotation of the rotating shaft (2). In this process, the waterproof material 2 (44) is closely attached to the inner wall of the tunnel through the elastic pressure roller (42), and the waterproof material 2 (44) is laid; S6: When the support plate (41), the elastic pressure roller (42), the waterproof material 1 (43) and the waterproof material 2 (44) rotate to the right by more than 180 degrees, the elastic pressure roller (42) separates from the inner wall of the tunnel. At this time, the connecting rod (72) contacts the transmission rod (63) on the right side. The elastic force of the spring (62) causes the connecting rod (72) to rotate, thereby causing the connecting plate (73) to rotate. The connecting plate (73) drives the holding rod 2 (75) to hold the waterproof material 2 (44). At the same time, the holding rod 1 (74) separates from the waterproof material 1 (43). Then, the waterproof material 2 (44) is cut. Then, the waterproof material 1 (43) is inserted on the outer side of the elastic pressure roller (42). The operation of step S3 is repeated. By analogy, the laying of the waterproof material 1 (43) and the waterproof material 2 (44) on the inner wall of the tunnel is completed by alternating operations.

Images