Waterproof plate laying trolley equipment for karst tunnel

Abstract

The invention relates to the technical field of tunnel construction, and discloses waterproof plate laying trolley equipment for a karst tunnel, which comprises a cloth hanging trolley, telescopic arms are rotatably connected to the front side and the rear side of the cloth hanging trolley, and arched telescopic frames are fixedly mounted at the right ends of the two telescopic arms; and a fixed shaft is fixedly installed between the right ends of the two sets of arched telescopic frames, the outer side of the middle of the fixed shaft is rotationally connected with a pressing roller, and the outer sides of the two ends of the fixed shaft are sleeved with side edge extrusion assemblies. A sliding arm slides into a square sleeve, a piston cylinder moves towards a sliding piston, the space of a left cavity in the piston cylinder is enlarged, and part of hydraulic oil in an oil storage cavity is sucked into the piston cylinder; the sealing disc moves rightwards and is separated from the blocking ring, so that the rotating pipe can move leftwards and rightwards relative to the pressing roller; and when the pressing roller moves to the protruding position of the inner wall of the tunnel, the rotating pipe can keep the state of pressing the waterproof plate under the elastic effect of the second spring, and therefore the purpose that it is guaranteed that the edges of the two sides of the waterproof plate are tightly attached to the inner wall of the tunnel is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, in particular to a trolley device for laying waterproof panels in karst tunnels. Background Art

[0002] Karst tunnels refer to tunnels excavated in soluble rock formations, usually used in transportation, water conservancy, municipal engineering and other projects. In order to prevent water in the rock formation from penetrating into the tunnel, waterproof panels need to be laid inside the tunnel. During the laying process of the waterproof panels, the waterproof panels are installed on the inner wall of the tunnel in sections by means of a cloth hanging trolley, and the two adjacent sections of the waterproof panels are overlapped by overlapping each other.

[0003] The Chinese patent with application date: 2021-05-31 and announcement number: CN113339022B discloses a waterproof board laying device and waterproof board laying method for mountain tunnels, which belongs to the technical field of tunnel construction equipment. It solves the problem that the extension of the mechanical arm of the waterproof board laying trolley in the prior art is difficult to control, affecting the construction quality and poor applicability. The present invention includes a portal frame and a waterproof board fixing rod for installing a waterproof board reel. A walking mechanism is arranged under the portal frame. Telescopic arms are rotatably connected on both sides of the portal frame. A rotating drive mechanism for driving the telescopic arm to rotate around the axis of the tunnel is arranged on the portal frame. The telescopic end of the telescopic arm is connected to an adaptive telescopic arm. The two ends of the waterproof board fixing rod are respectively connected to the adaptive telescopic arms on both sides. The end of the adaptive telescopic arm is provided with a waterproof board clamping device. The adaptive telescopic arm of the present invention can automatically ensure that the clamping force between the pressure wheel and the tunnel wall is within an acceptable range. Damage to the waterproof board or mechanical arm and quality defects caused by excessive extension are avoided.

[0004] In this technical solution, the waterproof sheet is squeezed onto the inner wall of the tunnel by the pressure roller support rod and the pressure roller. Since the concrete layer sprayed on the inner wall of the tunnel is uneven during the construction of the tunnel, when one of the pressure rollers is at the most protruding point of the concrete layer, the pressure roller support rod will be moved away from the inner wall of the tunnel as a whole, and most of the pressure rollers will no longer be in contact with the waterproof sheet, resulting in the edges on both sides of the waterproof sheet not fitting closely enough against the inner wall of the tunnel, causing gaps and affecting the waterproof effect. Moreover, since the waterproof sheet needs to overlap a certain length for lap joint, the thickness of the overlapping part increases, causing one end of the pressure roller support rod to fit on the overlapping part of the waterproof sheet, while the other end of the pressure roller support rod is suspended, which will also cause the other edge of the waterproof sheet not fitting closely enough against the inner wall of the tunnel. Further improvements can be made. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the present invention provides a trolley device for laying waterproof boards in karst tunnels, which has the advantages of ensuring that the edges of both sides of the waterproof boards are tightly fitted on the inner wall of the tunnel, and solves the problem that the pressure wheel support rod is easily partially suspended due to the uneven inner wall of the tunnel, resulting in a loose fit between the waterproof board and the inner wall of the tunnel.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose of ensuring that the edges of both sides of the waterproof board are tightly fitted on the inner wall of the tunnel, the present invention provides the following technical solutions: a waterproof board laying trolley equipment for karst tunnels, comprising a cloth hanging trolley, the front and rear sides of the cloth hanging trolley are rotatably connected with telescopic arms, the right ends of two groups of telescopic arms are fixedly installed with arched telescopic frames, a fixed shaft is fixedly installed between the right ends of the two groups of arched telescopic frames, a pressure roller is rotatably connected to the outer side of the middle part of the fixed shaft, two groups of bosses are fixedly installed on the surface of the fixed shaft, and the two groups of bosses are clamped on the two ends of the pressure roller; side extrusion assemblies are sleeved on the outer sides of both ends of the fixed shaft, clamping assemblies are fixedly installed on the left end tops of the two groups of arched telescopic frames, and a mounting shaft is arranged between the two groups of clamping assemblies.

[0009] Preferably, four sets of running wheels are installed at the bottom of the cloth hanging trolley, and motor 1 is installed at the center of the two sets of running wheels on the rear side.

[0010] Preferably, two sets of motors 2 are fixedly installed in the upper half of the cloth hanging trolley, the output end of the motor 2 is connected to a reducer, a turntable is fixedly installed at the output end of the reducer, the telescopic arm is fixedly installed on the surface of the turntable, and the telescopic arm is arranged along the diameter direction of the turntable.

[0011] Preferably, each group of the arched telescopic frames includes a square sleeve fixedly installed on the right end of the telescopic arm, a sliding arm is slidably connected to the right end of the square sleeve, the fixed shaft is fixedly installed between the right ends of the two sliding arms, and a reinforcement plate is fixedly installed between the two square sleeves; a spring 1 is arranged in the square sleeve, gaskets are fixedly installed at both ends of the spring 1, a pressure sensor is fixedly installed on the left side wall of the square sleeve, the spring 1 is fixedly installed on the left end of the sliding arm through one of the gaskets, and the spring 1 is fixedly installed on the pressure sensor through another gasket; the pressure sensor is electrically connected to a controller, and the controller is electrically connected to the telescopic arm and motor 2.

[0012] Preferably, a plug post is fixedly installed on the left side of the boss, a sleeve is sleeved on the left end of the plug post, and the sleeve is fixedly installed on the right side of the reinforcement plate. An annular groove is opened on the left side of the boss, and the annular groove is used for inserting the sleeve.

[0013] Preferably, each group of the side extrusion assemblies includes a guide groove fixedly mounted on a fixed shaft, the guide groove opening faces the right side, a support tube is sleeved on the outer side of the guide groove, two groups of clamps are fixedly mounted on the inner wall of the support tube, and the two groups of clamps are respectively fitted on the upper and lower sides of the guide groove; a slider is fixedly mounted on the inner wall of the support tube, the slider passes through the guide groove opening and is slidably connected in the guide groove, a spring 2 is fixedly mounted on the left side of the slider, a connecting plate is fixedly mounted on the left end of the spring 2, and the connecting plate is fixedly mounted on the inner wall of the guide groove; a rotating tube is sleeved on the outer side of the support tube, annular flanges are fixedly mounted on both ends of the rotating tube, and the two groups of annular flanges are respectively fitted on the two ends of the support tube.

[0014] Preferably, the outer diameter of the annular flange is larger than the diameter of the pressure roller, the right end of the boss is a curved surface, and the two side edges of the curved surface are semicircular edge line one and semicircular edge line two respectively, the radius of semicircular edge line one is equal to the outer diameter of the pressure roller, and the radius of semicircular edge line two is equal to the outer diameter of the annular flange.

[0015] Preferably, a hydraulic buffer is arranged between the side extrusion assembly and the arch telescopic frame; the hydraulic buffer comprises a clamp fixedly mounted on the sliding arm, a piston cylinder is fixedly mounted in the clamp, a sliding piston is slidably connected through the left end of the piston cylinder, the sliding piston divides the clamp into a left chamber and a right chamber, and the left chamber is filled with hydraulic oil; two hoses are connected to the right end of the piston cylinder, a guide hole is provided at the right end of the piston cylinder, the guide hole passes through the housing of the piston cylinder, and the left end opening of the guide hole is located on the inner wall of the left end of the piston cylinder, and the hose is connected with the left chamber through the guide hole; an exhaust hole is provided through the circumferential surface of the right half of the piston cylinder, and the exhaust hole is connected with the right chamber; the hydraulic buffer also comprises two limit platforms, the limit platform is fixedly mounted on the fixed shaft, the right end of the limit platform is an arc surface, the right end of the limit platform is attached to the inner wall of the support tube, an oil storage chamber is arranged inside the limit platform, the two hoses are respectively connected to the two limit platforms, and the hoses are connected with the oil storage chamber.

[0016] Preferably, a sliding rod is slidably connected to the left end of the limit platform, the sliding rod extends into the oil storage cavity, a hollow plate is fixedly installed on the right end of the sliding rod, and the left end of the sliding rod is fixedly installed on the inner wall of the support tube; a plurality of oil holes are opened on the surface of the hollow plate, a blocking ring is fixedly installed on the circumferential surface of the sliding rod located inside the oil storage cavity, a sealing disk is slidably connected to the surface of the sliding rod, and the sealing disk is located between the blocking ring and the hollow plate.

[0017] Preferably, each group of the clamping components includes an L-shaped support fixedly mounted on a square sleeve, an arc-shaped bracket is fixedly mounted on the upper halves of the two opposite sides of the two L-shaped supports, a nut is fixedly mounted on the other side of the L-shaped support, a socket is penetrated through the surface of the L-shaped support, the nut is connected to the socket, the nut is threadedly connected to a threaded rod, and the threaded rod passes through the socket; a semi-cylindrical shell is fitted on the top of the arc-shaped bracket, a semi-circular protrusion is fixedly mounted on the bottom of the semi-cylindrical shell near one end of the L-shaped support, the semi-circular protrusion is slidably connected to the arc-shaped bracket, the threaded rod is rotatably connected to the semi-cylindrical shell and the semi-circular protrusion, the arc-shaped bracket and the semi-cylindrical shell are clamped on the circumferential surface of the mounting shaft, and the two semi-circular protrusions are clamped on both ends of the mounting shaft.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides a trolley device for laying waterproof panels in karst tunnels, which has the following beneficial effects:

[0020] 1. The trolley equipment for laying waterproof boards in karst tunnels slides into the square sleeve through the sliding arm, and the piston cylinder moves toward the sliding piston, so that the space of the left chamber inside the piston cylinder becomes larger, and part of the hydraulic oil inside the oil storage chamber is sucked into the piston cylinder; the sealing plate moves to the right and separates from the blocking ring, so that under the elastic action of the second spring, the support tube can move left and right relative to the guide groove, and then the rotating tube can move left and right relative to the pressure roller; when the pressure roller moves to the protrusion of the inner wall of the tunnel, the rotating tube can keep the waterproof board pressed under the elastic action of the second spring, so as to achieve the purpose of ensuring that the edges of both sides of the waterproof board are closely attached to the inner wall of the tunnel;

[0021] 2. The trolley equipment for laying waterproof boards in karst tunnels drives the semi-cylindrical shell and the semi-circular protrusion to move along the arc-shaped bracket toward the L-shaped support by screwing the threaded rod, avoiding the end of the installation shaft, and then placing the installation shaft on the top of the arc-shaped bracket, and screwing the threaded rod in the opposite direction until the semi-circular protrusion abuts against the end of the installation shaft, and the semi-cylindrical shell and the arc-shaped bracket are clamped on the circumferential surface of the installation shaft, thereby completing the fixing of the installation shaft; thereby achieving the purpose of facilitating the replacement of the installation shaft;

[0022] 3. The waterproof board laying trolley equipment used in karst tunnels, during the left and right movement of the support tube and the rotating tube, the hollow plate moves left and right in the oil storage chamber under the action of the sliding rod connection, and the hydraulic oil slides through the oil hole; the hydraulic oil provides resistance to the movement of the hollow plate to prevent the support tube and the rotating tube from moving too fast, and the rotating tube from hitting the waterproof board with too much force, causing the waterproof board to be damaged. Similarly, during the movement of the pressure roller along the inner wall of the tunnel, the protrusion on the inner wall of the tunnel will push the pressure roller to the left, and the pressure roller will move to the right under the elastic action of the spring, causing the pressure roller to move left and right. In this process, the piston cylinder and the sliding piston move relatively, and the hydraulic oil inside the left chamber produces a flow effect, and provides resistance to the movement of the piston cylinder and the sliding piston, causing the pressure roller to move slowly; thereby achieving the purpose of preventing the waterproof board from being hit and damaged by the pressure roller and the rotating tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a trolley device for laying waterproof panels in karst tunnels proposed by the present invention;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of a waterproof board laying trolley device for karst tunnels proposed by the present invention after removing the cloth hanging trolley;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of a waterproof board laying trolley device for karst tunnels proposed by the present invention after removing the cloth hanging trolley and the telescopic arm;

[0026] Figure 4 A schematic diagram of the three-dimensional structure of an arched telescopic frame of a trolley device for laying waterproof panels in karst tunnels proposed by the present invention;

[0027] Figure 5 This is a schematic diagram of the main cross-sectional structure of an arched telescopic frame of a trolley device for laying waterproof panels in karst tunnels proposed by the present invention;

[0028] Figure 6 A schematic diagram of the three-dimensional structure of a fixed shaft and a pressure roller of a trolley device for laying waterproof panels in karst tunnels proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of a three-dimensional cross-section structure of a fixed shaft and a pressure roller of a trolley device for laying waterproof panels in karst tunnels proposed by the present invention;

[0030] Figure 8 This is a schematic diagram of the main cross-sectional structure of a fixed shaft and a pressure roller of a trolley device for laying waterproof panels in karst tunnels proposed by the present invention;

[0031] Fig. 9This is a schematic diagram of the three-dimensional structure of a side extrusion assembly of a trolley device for laying waterproof panels in karst tunnels proposed by the present invention;

[0032] Fig.10 This is a schematic diagram of a three-dimensional cross-sectional structure of a side extrusion assembly of a trolley device for laying waterproof panels in karst tunnels proposed by the present invention;

[0033] Fig.11 This is a schematic diagram of the three-dimensional structure of a piston cylinder and a sliding piston of a trolley device for laying waterproof panels in karst tunnels proposed by the present invention;

[0034] Fig.12 This is a schematic diagram of the main cross-sectional structure of a piston cylinder of a trolley device for laying waterproof panels in karst tunnels proposed by the present invention;

[0035] Fig.13 It is a schematic diagram of a three-dimensional cross-section structure of a limit platform of a trolley device for laying waterproof panels in karst tunnels proposed by the present invention;

[0036] Fig.14 This is a schematic diagram of the three-dimensional structure of a clamping assembly of a trolley device for laying waterproof panels in karst tunnels proposed by the present invention.

[0037] In the figure: 100, cloth hanging trolley; 200, telescopic arm; 300, arched telescopic frame; 400, fixed shaft; 500, pressure roller; 600, boss; 700, side extrusion assembly; 800, hydraulic buffer; 900, clamping assembly; 1000, mounting shaft;

[0038] 101, walking wheel; 102, motor 1; 201, motor 2; 202, reducer; 203, turntable;

[0039] 301, square sleeve; 302, sliding arm; 303, spring 1; 304, pressure sensor; 305, reinforcement plate;

[0040] 601, plug column; 602, sleeve; 603, annular groove; 604, semicircular edge line 1; 605, semicircular edge line 2;

[0041] 701, guide groove; 702, support tube; 703, clamping plate; 704, slider; 705, spring 2; 706, connecting plate; 707, rotating tube; 708, annular flange;

[0042] 801, hoop; 802, piston cylinder; 803, sliding piston; 804, hose; 805, guide hole; 806, exhaust hole; 807, limit table; 808, oil storage chamber; 809, slide rod; 810, hollow plate; 811, oil hole; 812, blocking ring; 813, sealing disk;

[0043] 901, L-shaped support; 902, arc-shaped bracket; 903, nut; 904, threaded rod; 905, semi-cylindrical shell; 906, semicircular protrusion. DETAILED DESCRIPTION

[0044] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present application.

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] See also Figure 1-Figure 3A waterproof board laying trolley device for karst tunnels includes a cloth hanging trolley 100, four sets of running wheels 101 are installed at the bottom of the cloth hanging trolley 100, and a motor 102 is installed at the center of the two sets of running wheels 101 on the rear side. The running wheels 101 are controlled to rotate by the motor 102, so that the cloth hanging trolley 100 moves inside the tunnel. The front and rear sides of the cloth hanging trolley 100 are both rotatably connected with telescopic arms 200, and the telescopic arms 200 are extended and retracted while rotating to adapt to the diameter of the tunnel. The right ends of the two telescopic arms 200 are fixedly installed with arch telescopic frames 300, and the fixed shaft 400 is fixedly installed between the right ends of the two telescopic frames 300. The middle outer side of the fixed shaft 400 is rotatably connected with a pressure roller 500. When the pressure roller 500 presses the waterproof board against the inner wall of the tunnel, since the telescopic length of the telescopic arm 200 is difficult to accurately control, the elasticity of the arch telescopic frame 300 allows the pressure roller 500 to elastically abut against the waterproof board to prevent the pressure roller 500 from squeezing the waterproof board too much, causing the squeezing force between the waterproof board and the inner wall of the tunnel to be too large, causing the waterproof board to be damaged. Two sets of bosses 600 are fixedly installed on the surface of the fixed shaft 400, and the two sets of bosses 600 are clamped on the two ends of the pressure roller 500, and the pressure roller 500 is limited by the bosses 600. Side extrusion assemblies 700 are sleeved on the outer sides of both ends of the fixed shaft 400. The side extrusion assemblies 700 can move left and right relative to the fixed shaft 400. When the fixed shaft 400 is far from the inner wall of the tunnel, the side extrusion assemblies 700 can squeeze the edges of the waterproof board on the inner wall of the tunnel to prevent a large gap between the edge of the waterproof board and the inner wall of the tunnel. The clamping assemblies 900 are fixedly installed on the top of the left ends of the two sets of arched telescopic frames 300, and an installation shaft 1000 is set between the two sets of clamping assemblies 900.

[0047] See also Figure 2 Two sets of motors 201 are fixedly installed in the upper part of the cloth hanging trolley 100, the output end of the motor 201 is connected to a reducer 202, a turntable 203 is fixedly installed at the output end of the reducer 202, and the telescopic arm 200 is fixedly installed on the surface of the turntable 203, and the telescopic arm 200 is arranged along the diameter direction of the turntable 203. The turntable 203 is driven to rotate by the motor 201 and the reducer 202, thereby driving the telescopic arm 200 to deflect.

[0048] See also Figure 4-Figure 5Each set of arch telescopic frames 300 includes a square sleeve 301 fixedly mounted on the right end of the telescopic arm 200, a sliding arm 302 is slidably connected in the right end of the square sleeve 301, and a fixed shaft 400 is fixedly mounted between the right ends of the two sliding arms 302. A reinforcing plate 305 is fixedly mounted between the two square sleeves 301, and the two square sleeves 301 are reinforced by the reinforcing plate 305. A spring 1 303 is arranged in the square sleeve 301, and gaskets are fixedly mounted at both ends of the spring 1 303. A pressure sensor 304 is fixedly mounted on the left wall of the square sleeve 301, and the spring 1 303 is fixedly mounted on the left end of the sliding arm 302 through one of the gaskets, and the spring 1 303 is fixedly mounted on the pressure sensor 304 through another gasket. The telescopic arm 200 is extended, so that the pressure roller 500 pushes the waterproof board toward the inner wall of the tunnel, and as the telescopic arm 200 continues to extend, the sliding arm 302 slides relative to the square sleeve 301, so that the spring 1 303 is squeezed and contracted. Thus, the pressure roller 500 elastically abuts against the waterproof board, ensuring that the waterproof board is closely attached to the inner wall of the tunnel.

[0049] The pressure sensor 304 is electrically connected to a controller, and the controller is electrically connected to the telescopic arm 200 and the second motor 201. The spring 1 303 contracts and accumulates elastic potential energy, and the spring 1 303 squeezes the pressure sensor 304, and the pressure sensor 304 transmits a signal to the controller, and then the controller controls the telescopic arm 200 to stop extending. The controller can also control the start and stop of the second motor 201 and the rotation speed of the output end of the second motor 201, and control the moving speed of the pressure roller 500 along the inner wall of the tunnel.

[0050] See also Figure 6-Figure 7 and Fig.10 A plug post 601 is fixedly installed on the left side of the boss 600, a sleeve 602 is sleeved on the left end of the plug post 601, and the sleeve 602 is fixedly installed on the right side of the reinforcing plate 305. An annular groove 603 is opened on the left side of the boss 600, and the annular groove 603 is used to insert the sleeve 602. The boss 600, the plug post 601 and the sleeve 602 are provided to increase the support points for the fixed shaft 400. The plug post 601 and the sleeve 602 can slide relative to each other, and when the fixed shaft 400 approaches the reinforcing plate 305, the support function for the fixed shaft 400 is maintained.

[0051] See also Figure 9-10Each set of side extrusion components 700 includes a guide groove 701 fixedly mounted on the fixed shaft 400, and the opening of the guide groove 701 faces the right side. A support tube 702 is sleeved on the outer side of the guide groove 701, and two sets of clamps 703 are fixedly mounted on the inner wall of the support tube 702. The two sets of clamps 703 are respectively attached to the upper and lower sides of the guide groove 701 to inhibit the support tube 702 from moving up and down relative to the guide groove 701. A slider 704 is fixedly mounted on the inner wall of the support tube 702, and the slider 704 passes through the opening of the guide groove 701 and is slidably connected in the guide groove 701, thereby guiding the moving path of the support tube 702, so that the support tube 702 can only move along the left and right directions.

[0052] A second spring 705 is fixedly installed on the left side of the slider 704, and a connecting plate 706 is fixedly installed on the left end of the second spring 705. The connecting plate 706 is fixedly installed on the inner wall of the guide groove 701. The elasticity of the second spring 705 makes the support tube 702 have a tendency to move to the right. A rotating tube 707 is sleeved on the outer side of the support tube 702, and an annular flange 708 is fixedly installed at both ends of the rotating tube 707. The two sets of annular flanges 708 are respectively attached to the two ends of the support tube 702. The rotating tube 707 moves left and right with the support tube 702, and can rotate relative to the support tube 702.

[0053] Thus, the support tube 702 and the rotating tube 707 can move left and right relative to the fixed shaft 400 through the elasticity of the second spring 705. When the pressure roller 500 moves to the protrusion of the inner wall of the tunnel, the rotating tube 707 can maintain the effect of pressing the waterproof board under the elastic action of the second spring 705, ensuring that the edges of both sides of the waterproof board always keep close to the inner wall of the tunnel.

[0054] See also Figure 7-Figure 9 , the outer diameter of the annular flange 708 is larger than the diameter of the roller 500, the right end of the boss 600 is a curved surface, and the two side edges of the curved surface are semicircular edge line 1 604 and semicircular edge line 2 605, respectively. The radius of semicircular edge line 1 604 is equal to the outer diameter of the roller 500, and the radius of semicircular edge line 2 605 is equal to the outer diameter of the annular flange 708. In the initial state, the roller 500 has not yet contacted the inner wall of the tunnel. At this time, if Figure 8 As shown, the edge of the pressing roller 500 and the edge of the rotating tube 707 have only one overlap point, and the overlap point is located on the right side of the axis of the pressing roller 500 and the rotating tube 707. Figure 8 The dotted line in the figure represents the waterproof board, and the contact area between the waterproof board and the pressure roller 500 and the side extrusion assembly 700 is just located at the coincidence point, so that the waterproof board can remain flat during the process in which the pressure roller 500, the boss 600 and the side extrusion assembly 700 push the waterproof board toward the inner wall of the tunnel.

[0055] See also Fig. 9A hydraulic buffer 800 is arranged between the side extrusion assembly 700 and the arch telescopic frame 300; the hydraulic buffer 800 is used to limit the support tube 702 to control the position of the rotating tube 707 in the initial state, so that the edge of the rotating tube 707 and the edge of the pressure roller 500 have only one overlapping point, and the overlapping point is located to the right of the axis of the pressure roller 500.

[0056] See also Figure 10-12 The hydraulic buffer 800 includes a clamp 801 fixedly mounted on the sliding arm 302, a piston cylinder 802 fixedly mounted in the clamp 801, a sliding piston 803 slidingly connected through the left end of the piston cylinder 802, the sliding piston 803 divides the clamp 801 into a left chamber and a right chamber, and the left chamber is filled with hydraulic oil; two hoses 804 are connected to the right end of the piston cylinder 802, a guide hole 805 is opened at the right end of the piston cylinder 802, the guide hole 805 passes through the shell of the piston cylinder 802, and the left end opening of the guide hole 805 is located on the inner wall of the left end of the piston cylinder 802, and the hose 804 is connected to the left chamber through the guide hole 805. An exhaust hole 806 is opened through the right half of the circumferential surface of the piston cylinder 802, and the exhaust hole 806 is connected to the right chamber; when the piston cylinder 802 and the sliding piston 803 move relative to each other, the air pressure in the right chamber is balanced through the exhaust hole 806. The hydraulic buffer 800 also includes two limit platforms 807, which are fixedly mounted on the fixed shaft 400, and the right end of the limit platform 807 is an arc-shaped surface, and the right end of the limit platform 807 is attached to the inner wall of the support tube 702. An oil storage cavity 808 is provided inside the limit platform 807, and two hoses 804 are respectively connected to the two limit platforms 807, and the hoses 804 are connected to the oil storage cavity 808. Therefore, the hydraulic oil can flow inside the piston cylinder 802 and the oil storage cavity 808 through the communication effect of the hose 804 and the guide hole 805.

[0057] In the initial state, under the elastic action of spring 1 303, the square sleeve 301 and the sliding arm 302 remain in an extended state. At this time, the left chamber space inside the clamp 801 is small, and the hydraulic oil is compressed into the oil storage chamber 808. During the extension of the telescopic arm 200, the pressure roller 500 presses the waterproof plate against the inner wall of the tunnel and makes the sliding arm 302 slide relative to the square sleeve 301, which will drive the piston cylinder 802 to move toward the sliding piston 803, so that the left chamber space is enlarged, and the hydraulic oil is sucked from the oil storage chamber 808 into the left chamber.

[0058] See also Figure 10-13The left end of the limit platform 807 is slidably connected with a slide rod 809, which extends into the oil storage chamber 808. The right end of the slide rod 809 is fixedly installed with a hollow plate 810. The left end of the slide rod 809 is fixedly installed on the inner wall of the support tube 702. A plurality of oil holes 811 are opened on the surface of the hollow plate 810. A blocking ring 812 is fixedly installed on the circumferential surface of the slide rod 809 located inside the oil storage chamber 808. A sealing disk 813 is slidably connected to the surface of the slide rod 809. The sealing disk 813 is located between the blocking ring 812 and the hollow plate 810. In the initial state, after the hydraulic oil inside the left chamber of the piston cylinder 802 enters the oil storage chamber 808, the hydraulic oil pushes the sealing plate 813 to the left, and the sealing plate 813 pushes the blocking ring 812 to the left, and the sliding rod 809 pushes the support tube 702 to the left. When the blocking ring 812 abuts against the left inner wall of the oil storage chamber 808, the edge of the rotating tube 707 and the edge of the pressure roller 500 have only one overlapping point.

[0059] After the pressure roller 500 presses the waterproof plate against the inner wall of the tunnel, the sliding arm 302 slides into the square sleeve 301, and part of the hydraulic oil in the oil storage chamber 808 is sucked into the left chamber of the piston cylinder 802, causing the sealing plate 813 to move to the right and separate from the blocking ring 812. Under the elastic action of the second spring 705, the support tube 702 and the rotating tube 707 have a tendency to move to the right. When the rotating tube 707 moves to the protrusion of the inner wall of the tunnel, the rotating tube 707 will move to the left again. Therefore, during the movement of the support tube 702 and the rotating tube 707 along the inner wall of the tunnel, the support tube 702 will move, and under the elastic action of the slide rod 809, the hollow plate 810 will slide back and forth inside the oil storage chamber 808, and the hydraulic oil will flow through the oil hole 811. The hydraulic oil generates resistance to the movement of the hollow plate 810, so that the support tube 702 and the rotating tube 707 move slowly, preventing the spring 2 705 from being too elastic. When the rotating tube 707 passes over the protrusion of the tunnel inner wall, it quickly hits the depression of the tunnel inner wall, causing the waterproof board to be damaged by excessive pressure.

[0060] See also Fig.14Each set of clamping components 900 includes an L-shaped support 901 fixedly mounted on the square sleeve 301, and an arc-shaped bracket 902 is fixedly mounted on the upper half of the opposite sides of the two L-shaped supports 901, and a nut 903 is fixedly mounted on the other side of the L-shaped support 901. A plug hole is opened through the surface of the L-shaped support 901, and the nut 903 is connected to the plug hole. The nut 903 is threadedly connected to a threaded rod 904, and the threaded rod 904 passes through the plug hole; a semi-cylindrical shell 905 is attached to the top of the arc-shaped bracket 902, and a semi-circular protrusion 906 is fixedly mounted on the bottom of the semi-cylindrical shell 905 near one end of the L-shaped support 901, and the semi-circular protrusion 906 is slidably connected to the arc-shaped bracket 902, and the length of the arc-shaped bracket 902 is greater than twice the length of the semi-cylindrical shell 905. The threaded rod 904 is rotatably connected to the semi-cylindrical shell 905 and the semicircular protrusion 906 . The arc-shaped bracket 902 and the semi-cylindrical shell 905 are clamped on the circumferential surface of the installation shaft 1000 . The two semicircular protrusions 906 are clamped on both ends of the installation shaft 1000 .

[0061] When in use, by screwing the threaded rod 904, the semi-cylindrical shell 905 and the semi-circular protrusion 906 are driven to move along the arc-shaped bracket 902 toward the L-shaped support 901, avoiding the end of the installation shaft 1000, and then the installation shaft 1000 is placed on the top of the arc-shaped bracket 902, and the threaded rod 904 is screwed in the opposite direction until the semi-circular protrusion 906 abuts against the end of the installation shaft 1000, and the semi-cylindrical shell 905 and the arc-shaped bracket 902 are clamped on the circumferential surface of the installation shaft 1000, thereby completing the fixing of the installation shaft 1000;

[0062] The turntable 203 is driven to rotate by the motor 201 and the reducer 202, and the telescopic arm 200 is deflected synchronously. During this process, the telescopic arm 200 is extended and retracted, so that the pressure roller 500 moves along the inner wall of the tunnel to lay the waterproof board on the inner wall of the tunnel;

[0063] In this process, the telescopic arm 200 is extended, and the roller 500, the boss 600 and the rotating tube 707 push the waterproof board toward the inner wall of the tunnel. After the waterproof board is in close contact with the inner wall of the tunnel, the telescopic arm 200 continues to extend, and the sliding arm 302 slides toward the inside of the square sleeve 301, and the spring 1 303 is squeezed and contracted. The spring 1 303 squeezes the pressure sensor 304, and the pressure sensor 304 transmits a signal to the controller, which then controls the telescopic arm 200 to stop extending.

[0064] The pressure sensor 304 continuously transmits signals to the controller, and the controller controls the telescopic arm 200 to extend and retract, so that the spring 1 303 is kept in a compressed state, so that the pressure roller 500 maintains pressure on the waterproof board, and keeps the waterproof board in close contact with the inner wall of the tunnel;

[0065] The sliding arm 302 slides into the square sleeve 301, and the piston cylinder 802 moves toward the sliding piston 803, so that the space of the left chamber inside the piston cylinder 802 becomes larger, and part of the hydraulic oil inside the oil storage chamber 808 is sucked into the piston cylinder 802; the sealing plate 813 moves to the right and separates from the blocking ring 812, so that under the elastic action of the second spring 705, the support tube 702 can move left and right relative to the guide groove 701, and then the rotating tube 707 can move left and right relative to the pressure roller 500;

[0066] When the pressure roller 500 moves to the protrusion of the inner wall of the tunnel, the rotating tube 707 can maintain the state of pressing the waterproof board under the elastic action of the second spring 705, so that the two side edges of the waterproof board remain close to the inner wall of the tunnel;

[0067] During the left and right movement of the support tube 702 and the rotating tube 707, under the connecting action of the sliding rod 809, the hollow plate 810 moves left and right in the oil storage chamber 808, and the hydraulic oil slides through the oil hole 811; the hydraulic oil provides resistance to the movement of the hollow plate 810 to prevent the support tube 702 and the rotating tube 707 from moving too fast, and the rotating tube 707 from hitting the waterproof board with too much force, causing damage to the waterproof board.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A trolley device for laying waterproof boards in karst tunnels, comprising a cloth hanging trolley (100), characterized in that: The front and rear sides of the cloth hanging trolley (100) are both rotatably connected with telescopic arms (200), the right ends of the two groups of telescopic arms (200) are both fixedly installed with arched telescopic frames (300), a fixed shaft (400) is fixedly installed between the right ends of the two groups of arched telescopic frames (300), a pressure roller (500) is rotatably connected to the outer side of the middle part of the fixed shaft (400), and two groups of bosses (600) are fixedly installed on the surface of the fixed shaft (400), and the two groups of bosses (600) are clamped on both ends of the pressure roller (500); Side extrusion assemblies (700) are sleeved on the outer sides of both ends of the fixed shaft (400), and clamping assemblies (900) are fixedly installed on the top of the left ends of the two groups of arched telescopic frames (300), and a mounting shaft (1000) is arranged between the two groups of clamping assemblies (900).

2. The waterproof board laying trolley device for karst tunnels according to claim 1 is characterized in that: Four sets of running wheels (101) are installed at the bottom of the cloth hanging trolley (100), and motor 1 (102) is installed at the center of the two sets of running wheels (101) at the rear side.

3. The waterproof board laying trolley device for karst tunnels according to claim 1 is characterized in that: Two sets of motors (201) are fixedly installed in the upper part of the cloth hanging trolley (100); the output end of the motor (201) is connected to a reducer (202); a turntable (203) is fixedly installed at the output end of the reducer (202); the telescopic arm (200) is fixedly installed on the surface of the turntable (203), and the telescopic arm (200) is arranged along the diameter direction of the turntable (203).

4. The waterproof board laying trolley device for karst tunnels according to claim 1 is characterized in that: Each group of the arch telescopic frames (300) comprises a square sleeve (301) fixedly mounted on the right end of the telescopic arm (200), a sliding arm (302) is slidably connected inside the right end of the square sleeve (301), the fixed shaft (400) is fixedly mounted between the right ends of the two sliding arms (302), and a reinforcing plate (305) is fixedly mounted between the two square sleeves (301); A spring 1 (303) is arranged in the square sleeve (301), gaskets are fixedly installed at both ends of the spring 1 (303), a pressure sensor (304) is fixedly installed on the left side wall of the square sleeve (301), the spring 1 (303) is fixedly installed on the left end of the sliding arm (302) through one of the gaskets, and the spring 1 (303) is fixedly installed on the pressure sensor (304) through another gasket; The pressure sensor (304) is electrically connected to a controller, and the controller is electrically connected to the telescopic arm (200) and the second motor (201).

5. The waterproof board laying trolley device for karst tunnels according to claim 4 is characterized in that: A plug post (601) is fixedly installed on the left side of the boss (600), a sleeve (602) is sleeved on the left end of the plug post (601), and the sleeve (602) is fixedly installed on the right side of the reinforcing plate (305). An annular groove (603) is opened on the left side of the boss (600), and the annular groove (603) is used for the sleeve (602) to be inserted therein.

6. The waterproof board laying trolley device for karst tunnels according to claim 1 is characterized in that: Each group of the side extrusion components (700) comprises a guide groove (701) fixedly mounted on the fixed shaft (400), the guide groove (701) opening toward the right, a support tube (702) sleeved on the outer side of the guide groove (701), two groups of clamping plates (703) fixedly mounted on the inner wall of the support tube (702), and the two groups of clamping plates (703) are respectively attached to the upper and lower sides of the guide groove (701); A slider (704) is fixedly mounted on the inner wall of the support tube (702); the slider (704) passes through the opening of the guide groove (701) and is slidably connected in the guide groove (701); a second spring (705) is fixedly mounted on the left side of the slider (704); a connecting plate (706) is fixedly mounted on the left end of the second spring (705); and the connecting plate (706) is fixedly mounted on the inner wall of the guide groove (701); A rotating tube (707) is sleeved on the outer side of the supporting tube (702), and annular flanges (708) are fixedly installed at both ends of the rotating tube (707), and two groups of annular flanges (708) are respectively attached to the two ends of the supporting tube (702).

7. The waterproof board laying trolley device for karst tunnels according to claim 6 is characterized in that: The outer diameter of the annular flange (708) is greater than the diameter of the pressure roller (500), the right end of the boss (600) is a curved surface, and the two side edges of the curved surface are semicircular edge line 1 (604) and semicircular edge line 2 (605), respectively. The radius of the semicircular edge line 1 (604) is equal to the outer diameter of the pressure roller (500), and the radius of the semicircular edge line 2 (605) is equal to the outer diameter of the annular flange (708).

8. The waterproof board laying trolley device for karst tunnels according to claim 6 is characterized in that: A hydraulic buffer (800) is provided between the side extrusion assembly (700) and the arched telescopic frame (300); The hydraulic buffer (800) comprises a clamp (801) fixedly mounted on a sliding arm (302), a piston cylinder (802) fixedly mounted in the clamp (801), a sliding piston (803) slidably connected to the left end of the piston cylinder (802), the sliding piston (803) dividing the clamp (801) into a left chamber and a right chamber, and the left chamber is filled with hydraulic oil; The right end of the piston cylinder (802) is connected to two hoses (804), and the right end of the piston cylinder (802) is provided with a guide hole (805), which passes through the shell of the piston cylinder (802), and the left end opening of the guide hole (805) is located on the inner wall of the left end of the piston cylinder (802), and the hose (804) is connected to the left chamber through the guide hole (805), and the right half of the circumferential surface of the piston cylinder (802) is provided with an exhaust hole (806), and the exhaust hole (806) is connected to the right chamber; The hydraulic buffer (800) also includes two limit platforms (807), the limit platforms (807) are fixedly installed on the fixed shaft (400), the right end of the limit platform (807) is an arc-shaped surface, the right end of the limit platform (807) is attached to the inner wall of the support tube (702), an oil storage cavity (808) is arranged inside the limit platform (807), the two hoses (804) are respectively connected to the two limit platforms (807), and the hoses (804) are connected to the oil storage cavity (808).

9. The waterproof board laying trolley device for karst tunnels according to claim 8 is characterized in that: The left end of the limit platform (807) is slidably connected with a slide rod (809), the slide rod (809) penetrates into the oil storage cavity (808), the right end of the slide rod (809) is fixedly installed with a hollow plate (810), and the left end of the slide rod (809) is fixedly installed on the inner wall of the support tube (702); The surface of the hollow plate (810) is penetrated by a plurality of oil holes (811); a blocking ring (812) is fixedly installed on the circumferential surface of the sliding rod (809) located inside the oil storage chamber (808); a sealing disk (813) is slidably connected to the surface of the sliding rod (809); and the sealing disk (813) is located between the blocking ring (812) and the hollow plate (810).

10. The waterproof board laying trolley device for karst tunnels according to claim 1, characterized in that: Each group of the clamping components (900) comprises an L-shaped support (901) fixedly mounted on a square sleeve (301), an arc-shaped bracket (902) being fixedly mounted on the upper half of the two opposite sides of the L-shaped supports (901), a nut (903) being fixedly mounted on the other side of the L-shaped supports (901), a plug hole being penetrated through the surface of the L-shaped support (901), the nut (903) being connected to the plug hole, the nut (903) being threadedly connected to a threaded rod (904), and the threaded rod (904) passing through the plug hole; A semi-cylindrical shell (905) is fitted on the top of the arc-shaped bracket (902), and a semi-circular protrusion (906) is fixedly installed on the bottom of the semi-cylindrical shell (905) close to one end of the L-shaped support (901), and the semi-circular protrusion (906) is slidably connected to the arc-shaped bracket (902), and the threaded rod (904) is rotatably connected to the semi-cylindrical shell (905) and the semi-circular protrusion (906), and the arc-shaped bracket (902) and the semi-cylindrical shell (905) are clamped on the circumferential surface of the installation shaft (1000), and the two semi-circular protrusions (906) are clamped on both ends of the installation shaft (1000).

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