Longitudinal pipe-retracting grouting equipment with mold for preventing hollowing out of the arch of the secondary lining of the tunnel

Abstract

The present invention discloses a tunnel secondary lining arch anti-emptying longitudinal pipe withdrawal type mold grouting equipment, which relates to the technical field of tunnel secondary lining arch mold grouting, and comprises a base, a rotating mechanism, and a pipe pulling mechanism. The rotating mechanism and the pipe pulling mechanism are respectively fixed on the base. The rotating mechanism comprises a rotating device and a first clamping device. The rotating part of the rotating device is fixedly connected to the first clamping device. A linear motion mechanism is fixedly arranged on the base, the moving part of the linear motion mechanism is fixedly connected to the pipe pulling connecting frame, and one side of the pipe pulling connecting frame is fixedly connected to the second clamping device. The grouting pipe can be passed through the rotating device, the first clamping device and the second clamping device, and can be clamped or loosened by the first clamping device and the second clamping device. The present invention can realize the functions of clamping, rotating and pulling out the grouting pipe while grouting through the mutual cooperation of the rotating mechanism and the pipe pulling mechanism. It has reasonable design, ingenious structure, high efficiency, good stability, and is easy to assemble and overhaul.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel secondary lining arch portion grouting with mold, and in particular to a tunnel secondary lining arch portion anti-emptying longitudinal pipe-retracting type grouting equipment with mold. Background Art

[0002] The quality defects of the tunnel secondary lining, such as hollowing and cavitation, are still common problems in the current secondary lining construction. According to the statistics of defects in the quality inspection and examination of the tunnel construction process and the quality inspection and acceptance of the completed project, there are many problems of hollowing and cavitation in the arch and waist of the secondary lining, and some of the problems are quite serious, which cause hidden dangers to the design structure and have a great impact on the operational safety of railways, highways and municipal roads. They have always been the focus of the railway, highway and municipal road construction units, railway bureaus, highway bureaus and the Quality Supervision and Administration Bureau of China Railway Corporation.

[0003] The main reasons for the voids and cavities in the arch and waist of the tunnel secondary lining are: (1) Due to poor working performance such as concrete fluidity and workability, the concrete does not flow well after being pumped into the arch formwork of the secondary lining trolley, resulting in partial failure to fill. (2) During the vibration process of the trolley arch formwork attached vibrator, the arch concrete may continue to sink and become void. (3) The designed longitudinal slope of the tunnel will cause the arch concrete to flow from the high end to the low end, which may easily cause the high end to not be filled. (4) When the concrete is capped, factors such as blockage of the pumping pipe and untimely concrete supply will cause the concrete entering the formwork to be close to initial setting and its fluidity is blocked, which may cause partial failure to fill.

[0004] The radial grouting of the RPC pipe with formwork for the second lining arch is a new technology promoted in the domestic railway tunnel construction in recent years. Before pouring concrete, the RPC grouting pipe is installed on the grouting pipe hole reserved at the center line of the trolley arch template. The pipe mouth is cut with a "cross" groove and pushed to the waterproof board and the initial support surface. The outer diameter of the pipe is 36mm and the inner diameter is 15mm. When the second lining concrete is capped and poured, it can also be judged whether the part is filled with concrete by whether the RPC pipe mouth overflows. The arch grouting with formwork is completed within 3-6 hours after the arch concrete capping is completed. Generally, 4 holes are arranged longitudinally on the 12m long second lining trolley. If the current hole is grouting, the adjacent hole is used as an exhaust hole. If the grouting pressure exceeds 1.0MPa or the adjacent hole overflows, it can be replaced with the next hole for grouting until all holes are grouted or overflowed. The grouting material with formwork can be purchased from the market as a finished micro-expansion mixture mortar, which can achieve the same strength as concrete. For specific content, please refer to the utility model patent: CN207297034U, tunnel secondary lining concrete arch backfill grouting device.

[0005] The problems with the above technical solution are: (1) Generally, a 12m trolley is equipped with 4 RPC grouting pipe holes, and the holes are arranged at intervals. Construction experience and radar detection have found that the voids and cavities in the arch concrete are irregular, and the void points may not be exactly at the grouting hole positions. Grouting may not be able to fill all the voids in the arch. (2) The grouting pipe holes and the adjacent exhaust pipe holes may not be spatially connected. Grouting and discharging the gas in the closed space is only an ideal condition. Therefore, even if the grouting pressure is reached, it may not be truly filled. (3) Radar non-destructive testing shows that this grouting process still cannot ensure that all the voids in the arch can be filled with grouting.

[0006] In order to solve the above problems, we have developed a new method: a grouting pipe is set on the top of the second lining along the axial direction of the arch. During grouting backfilling, the grouting pipe is pulled out while injecting slurry into the grouting pipe. If the above method is operated manually, the process is cumbersome and requires repeated grouting and pipe pulling operations, which increases the labor intensity of the operator. In addition, since the concrete will solidify over time when pouring the second lining, the grouting pipe prefabricated on the top of the arch will be firmly adhered, resulting in the grouting pipe being unable to be pulled out during grouting backfilling. In addition, since the grouting pipe is relatively long, the friction between it and the concrete is very large. Even if the concrete does not solidify the grouting pipe, it is difficult to pull it out manually. Summary of the invention

[0007] To achieve full coverage of the tunnel secondary lining arch longitudinal grouting with mold, in order to solve the problem that the grouting pipe is stuck due to concrete solidification and cannot be pulled out, the present invention adopts the following technical solutions:

[0008] A tunnel secondary lining arch anti-emptying longitudinal pipe withdrawal type molded grouting equipment, comprising a base, a rotating mechanism, and a pipe pulling mechanism;

[0009] The rotating mechanism and the tube pulling mechanism are respectively fixed on the base;

[0010] The rotating mechanism comprises a rotating device and a first clamping device;

[0011] The rotating device is a hollow structure, and the rotating part of the rotating device is fixedly connected to the first clamping device; the rotating part of the rotating device can drive the first clamping device to rotate at a certain angle;

[0012] The tube pulling mechanism comprises a second clamping device, a linear motion mechanism and a tube pulling connecting frame;

[0013] A linear motion mechanism is fixedly arranged on the base, a moving part of the linear motion mechanism is fixedly connected to the tube pulling connecting frame, and one side of the tube pulling connecting frame is fixedly connected to the second clamping device;

[0014] The grouting pipe can be passed through the rotating device, the first clamping device and the second clamping device, and can be clamped or released by the first clamping device and the second clamping device.

[0015] Preferably, the base comprises a bottom plate, a rotating mechanism fixing platform, a door frame, and a supporting arm;

[0016] A rotating mechanism fixing platform is fixedly arranged at one end of the bottom plate, and the rotating device is fixedly arranged on the rotating mechanism fixing platform;

[0017] A door frame is fixedly arranged at the other end of the bottom plate, and the door frame is an arch-shaped structure, and the linear motion mechanism is fixedly arranged on both sides of the door frame close to the rotating device;

[0018] Two support arms are fixedly arranged on both sides of the other side of the door frame away from the rotating device, and the support arms are vertically arranged on the door frame;

[0019] The pipe pulling connection frame comprises a guide rail, a slider, a support connection beam, and a support connection flange;

[0020] The guide rails are respectively fixedly arranged on the support arms, and the sliders are slidably arranged on the guide rails;

[0021] The supporting connection beam is an L-shaped structure, the bottom of which is fixedly arranged on the sliding block, and the supporting connection flange is fixedly arranged on one side of the middle part of the supporting connection beam;

[0022] The moving part of the linear motion mechanism is fixedly connected to the supporting connecting beam, and the supporting connecting beam and the sliding block can be driven to slide forward and backward along the guide rail through the forward and backward movement of the moving part of the linear motion mechanism;

[0023] The supporting connecting flange is fixedly connected to the second clamping device.

[0024] Preferably, the bottom plate is also provided with an empty slot;

[0025] A rib plate is also fixedly arranged between the support arm and the door frame;

[0026] The rotating mechanism fixing platform is in an inverted U-shaped structure.

[0027] Preferably, the rotating device is a swing hydraulic cylinder with a flange;

[0028] The first clamping device comprises a rotating pipe flange, a rotating pipe fixing semi-cylinder, a rotating pipe slide fixing ear, a rotating pipe slide, a rotating pipe movable semi-cylinder and a clamping cylinder;

[0029] The rotating pipe flange is a disc-shaped structure with a through hole in the center. A rotating pipe fixing semi-cylinder is fixedly arranged around the center of the rotating pipe flange on one side.

[0030] The rotating tube fixing semi-cylinder is a semi-cylindrical structure, a clamping opening is opened in the center, and rotating tube sliding rod fixing ears are fixedly arranged on both sides of the rotating tube fixing semi-cylinder;

[0031] The rotating tube movable semi-cylinder also has a semi-cylindrical structure, with a clamping opening in the center. Rotating tube sliding sleeves are fixedly arranged on both sides of the rotating tube movable semi-cylinder, and the rotating tube movable semi-cylinder corresponds to and matches the rotating tube fixed semi-cylinder;

[0032] The clamping cylinder is a linear motion cylinder, and a rotating tube slide rod is fixedly arranged on both sides of the cylinder body, and the rotating tube slide rod is inserted into the rotating tube sliding sleeve and the rotating tube slide rod fixing ear;

[0033] The bottom of the rotating tube movable semi-cylinder is fixedly connected to one end of the piston rod of the clamping cylinder, and the rotating tube movable semi-cylinder can be driven to slide up and down along the rotating tube sliding rod through the extension and contraction of the piston rod;

[0034] The rotating part of the rotating device is fixedly connected to the rotating pipe flange.

[0035] Preferably, the linear motion mechanism is a linear hydraulic cylinder;

[0036] The second clamping device includes a tube pulling flange, a tube pulling fixing semi-cylinder, a tube pulling slide rod fixing ear, a tube pulling slide rod, a tube pulling movable semi-cylinder and a tube pulling clamping cylinder;

[0037] The tube extraction flange is a disc-shaped structure with a through hole in the center. A tube extraction fixing semi-cylinder is fixedly arranged on one side of the tube extraction flange, and tube extraction slide rod fixing ears are fixedly arranged on both sides of the tube extraction fixing semi-cylinder. A tube extraction slide rod is fixedly arranged in the tube extraction slide rod fixing ears.

[0038] The tube pulling sliding rod may also be slidably provided with the tube pulling movable semi-cylinder;

[0039] The bottom of the tube pulling slide rod is fixedly connected to the tube pulling clamping cylinder;

[0040] The piston rod of the tube pulling clamping cylinder is fixedly connected to the bottom of the tube pulling movable semi-cylinder.

[0041] Preferably, the central through hole of the tube pulling flange and the central through hole of the tube rotating flange are not on the same axis.

[0042] Preferably, it also includes a longitudinal slide, which includes a slide rail, a slide block, a slide base, a slide bearing seat, a slide screw and a slide turntable;

[0043] Two slide rails are fixedly arranged in parallel on the slide base;

[0044] The two slide rails are respectively slidably provided with the slide blocks, and the bottom plate is fixedly connected to the slide blocks;

[0045] A slide bearing seat is fixedly provided on one side of the slide base, a bearing is provided inside the slide bearing seat, and the slide screw rod is rotatably passed through the bearing;

[0046] One end of the slide screw is rotatably connected to the bottom of the base plate, and the other end of the slide screw is fixedly connected to the slide turntable.

[0047] Preferably, it also includes a lifting platform, the lifting platform includes a lifting platform base, a lifting platform sliding sleeve, a lifting platform sliding rod, a lifting platform screw rod, and a lifting platform turntable;

[0048] A plurality of lifting platform sliding sleeves are fixedly arranged on the lifting platform base, a lifting platform sliding rod is slidably inserted into the lifting platform sliding sleeve, and the top of the lifting platform sliding rod is fixedly connected to the bottom of the sliding platform base;

[0049] The bottom of the slide base is also rotatably connected to the lifting platform screw rod, the lifting platform screw rod is inserted in the lifting platform base, and a lifting platform turntable is rotatably arranged on the lifting platform base. A threaded hole is opened in the center of the lifting platform turntable, and the threaded hole matches the lifting platform screw rod, and the lifting platform screw rod is inserted in the threaded hole of the lifting platform turntable.

[0050] Preferably, it also includes an overall support frame, which includes a top plate and support legs;

[0051] Four supporting legs are fixedly arranged at the four corners of the bottom of the top plate;

[0052] A lifting platform base is fixedly arranged on the top plate, and a slide rod hole is opened on the top plate, and the lifting platform slide rod can be inserted into the slide rod hole.

[0053] Preferably, the clamping cylinder, the linear motion mechanism and the tube pulling clamping cylinder are all linear hydraulic cylinders, linear air cylinders or linear electric cylinders.

[0054] The invention can realize the functions of clamping, rotating and pulling out the grouting pipe and grouting at the same time through the cooperation of the rotating mechanism and the pipe pulling mechanism. The invention has reasonable design, ingenious structure, high efficiency, good stability and is easy to assemble and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0056] Figure 2 It is a structural diagram of the rotating mechanism;

[0057] Figure 3 It is a schematic diagram of the structure of the base;

[0058] Figure 4 is a perspective view of a first clamping device;

[0059] Figure 5 is a three-dimensional view of the first clamping device from another direction;

[0060] Figure 6 is a three-dimensional diagram of the first clamping device from another direction;

[0061] Figure 7 is a schematic diagram of the extubation mechanism;

[0062] Figure 8 is a schematic diagram of the extubation mechanism in another direction;

[0063] Fig. 9 is an exploded schematic diagram of the extubation mechanism;

[0064] Fig.10 It is a schematic diagram of the longitudinal slide, lifting platform and overall support frame;

[0065] Fig.11 This is a schematic diagram after the grouting machine and the grouting pipe are connected. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical scheme and advantages of the implementation mode of the present application clearer, the following will be combined with the implementation mode of the present application. Figures 1 to 11 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the application for which protection is sought, but merely represents selected embodiments of the present application.

[0067] like Figure 1 As shown, a tunnel secondary lining arch anti-emptying longitudinal pipe withdrawal type molded grouting equipment at least includes a base 1, a rotating mechanism 2, and a pipe pulling mechanism 3.

[0068] The rotating mechanism 2 and the tube pulling mechanism 3 are respectively fixed on the base 1, and the centers of the two are located on different straight lines.

[0069] like Figure 2As shown, the rotating mechanism 2 includes a rotating device 20 and a first clamping device 21. The rotating device 20 is a hollow structure, in which a grouting pipe 7 can be penetrated. The rotating device 20 can be made of a rotary reducer or a swing hydraulic cylinder. The rotating part of the rotating device 20 is fixedly connected to the first clamping device 21. The rotating part of the rotating device 20 can drive the first clamping device 21 to rotate at a certain angle. The first clamping device 21 can adopt a clamping mechanism commonly used on a machine tool, or other forms of clamping methods, as long as the clamping or loosening of the grouting pipe 7 can be easily achieved.

[0070] like Figure 7 As shown, the tube pulling mechanism 3 includes a second clamping device 30 , a linear motion mechanism 31 and a tube pulling connecting frame 32 .

[0071] A linear motion mechanism 31 is fixedly arranged on the base 1. The linear motion mechanism 31 can be a linear hydraulic cylinder, a linear air cylinder or a linear electric cylinder and a screw transmission mechanism, etc., as long as it can realize linear reciprocating motion. The moving part of the linear motion mechanism 31 is fixedly connected to the tube pulling connecting frame 32, and one side of the tube pulling connecting frame 32 is fixedly connected to the second clamping device 30. The second clamping device 30 is similar in structure to the first clamping device 21, and can refer to each other or be used interchangeably.

[0072] During operation, the tunnel secondary lining arch anti-emptying longitudinal pipe withdrawal type grouting equipment with mold is moved to the position of the grouting pipe 7 pre-buried on the second lining arch, and the grouting pipe 7 is inserted from the hollow end of the rotating mechanism 2, through the first clamping device 21, the pipe pulling connecting frame 32 and the second clamping device 30, and extends from the other end of the second clamping device 30. In other words, the grouting pipe 7 can be passed through the rotating device 20, the first clamping device 21 and the second clamping device 30, and can be clamped or released by the first clamping device 21 and the second clamping device 30. After the first clamping device 21 of the rotating mechanism 2 clamps the grouting pipe 7, it is driven by the rotating device 20 to rotate, which can prevent the concrete from solidifying the grouting pipe 7. During grouting, the rotating mechanism 2 stops working and the pipe pulling mechanism 3 starts working. The second clamping device 30 clamps the grouting pipe 7, and then the linear motion mechanism 31 pushes the second clamping device 30 and the grouting pipe 7 outward for a certain distance, and then cement slurry is injected from the outer end of the grouting pipe 7, thereby realizing the operation of grouting and pulling out the pipe at the same time.

[0073] In one embodiment, in order to make the structure more compact and the force more reasonable, as shown in FIG. Figure 3As shown, the base 1 includes a bottom plate 10, a rotating mechanism fixing platform 11, a door frame 13, and a support arm 14. The rotating mechanism fixing platform 11 is fixedly arranged at one end of the bottom plate 10, and a rotating device 20 is fixedly arranged on the rotating mechanism fixing platform 11. The rotating mechanism fixing platform 11 is an inverted U-shaped structure, and the purpose is to raise the rotating device 20. Its specific structure can be welded by using channel steel or plate.

[0074] A door frame 13 is fixedly provided at the other end of the bottom plate 10, and the door frame 13 is perpendicular to the bottom plate 10. The door frame 13 is an arch-shaped structure, and a linear motion mechanism 31 is fixedly provided on both sides of the door frame 13 close to the rotating device 20 by screws. Two support arms 14 are fixedly provided on both sides of the other side of the door frame 13 away from the rotating device 20, and the support arms 14 are vertically provided on the door frame 13. In order to make the structure more solid, a rib plate 15 is also fixedly provided between the support arm 14 and the door frame 13.

[0075] like Fig. 9 As shown, the tube removal connection frame 32 includes a guide rail 320 , a slider 321 , a support connection beam 322 , and a support connection flange 323 .

[0076] The guide rails 320 are square guide rails, which are fixedly arranged on the support arms 14 by screws. The sliders 321 are slidably arranged on the guide rails 320 .

[0077] The support connecting beam 322 is an L-shaped structure, and its bottom is fixed on the slider 321 by screws. A support connecting flange 323 is fixedly provided on one side of the middle part of the support connecting beam 322. The moving part of the linear motion mechanism 31 is fixedly connected to the support connecting beam 322, and the forward and backward movement of the moving part of the linear motion mechanism 31 can drive the support connecting beam 322 and the slider 321 to slide forward and backward along the guide rail 320. The support connecting flange 323 is fixedly connected to the second clamping device 30.

[0078] In addition, a hollow groove 12 is provided on the bottom plate 10. The hollow groove 12 can reduce weight and prevent the first clamping device 21 from interfering with the bottom plate due to height issues when rotating.

[0079] In one embodiment, in order to simplify the structure and reduce the cost, Figures 2 to 6 As shown, the rotating device 20 is a swing hydraulic cylinder with a flange, and the swing angle of the hydraulic cylinder is 60 degrees.

[0080] like Figures 4 to 6 As shown, the first clamping device 21 includes a rotating tube flange 210 , a rotating tube fixing semi-cylinder 211 , a rotating tube slide rod fixing ear 212 , a rotating tube slide rod 213 , a rotating tube movable semi-cylinder 214 and a clamping cylinder 215 .

[0081] The rotating pipe flange 210 is a disc-shaped structure with a through hole in the center for inserting the grouting pipe 7 . A rotating pipe fixing semi-cylinder 211 is fixedly arranged around one side of the rotating pipe flange 210 along the center of the circle.

[0082] The rotating tube fixing semi-cylinder 211 is a semi-cylindrical structure, and a polygonal through hole is opened along the axial direction on the central axis thereof, and the through hole is used as a clamping opening for clamping the grouting pipe 7. The rotating tube fixing semi-cylinder 211 is respectively fixedly provided with rotating tube slide rod fixing ears 212 on both sides. The rotating tube slide rod fixing ears 212 are a vertically arranged sleeve structure, in which the rotating tube slide rod 213 can be passed and fixed.

[0083] The rotating tube movable semi-cylinder 214 is also a semi-cylindrical structure, with a clamping opening in the center, corresponding to the above-mentioned rotating tube fixed semi-cylinder 211, but it is not fixed on the rotating tube flange 210. Rotating tube sliding sleeves 2140 are vertically fixed on both sides of the rotating tube movable semi-cylinder 214, and the rotating tube movable semi-cylinder 214 corresponds to and matches with the rotating tube fixed semi-cylinder 211.

[0084] The clamping cylinder 215 is a linear motion cylinder, such as a hydraulic cylinder, a pneumatic cylinder or an electric cylinder, etc. A rotating tube slide rod 213 is fixedly provided on both sides of its cylinder body. The rotating tube slide rod 213 is inserted into the rotating tube sliding sleeve 2140 and the rotating tube slide rod fixing ear 212.

[0085] The bottom of the rotating tube movable semi-cylinder 214 is fixedly connected to one end of the piston rod 2150 of the clamping cylinder 215. The piston rod 2150 can be extended and retracted to drive the rotating tube movable semi-cylinder 214 to slide up and down along the rotating tube slide bar 213. The rotating part of the rotating device 20 is fixedly connected to the rotating tube flange 210.

[0086] In order to further simplify the structure and reduce costs, Figures 7-9 As shown, the linear motion mechanism 31 adopts a linear hydraulic cylinder to facilitate procurement and assembly.

[0087] The second clamping device 30 includes a pipe pulling flange 300, a pipe pulling fixed semi-cylinder 301, a pipe pulling slide fixing ear 303, a pipe pulling slide 304, a pipe pulling movable semi-cylinder 305 and a pipe pulling clamping cylinder 306. The pipe pulling flange 300 is a disc-shaped structure, and a through hole is opened in the center thereof for passing the grouting pipe 7. A pipe pulling fixed semi-cylinder 301 is fixedly arranged on one side of the pipe pulling flange 300, and a pipe pulling slide fixing ear 303 is fixedly arranged on both sides of the pipe pulling fixed semi-cylinder 301, and a pipe pulling slide 304 is fixedly arranged in the pipe pulling slide fixing ear 303. A pipe pulling movable semi-cylinder 305 can also be slidably arranged on the pipe pulling slide 304. The bottom of the pipe pulling slide 304 is fixedly connected to the pipe pulling clamping cylinder 306. The piston rod 3060 of the pipe pulling clamping cylinder 306 is fixedly connected to the bottom of the pipe pulling movable semi-cylinder 305. As can be seen from the above and the figure, the structure of the second clamping device 30 is very similar to that of the first clamping device 21, except that the shape of the clamping opening is not exactly the same. Figure 8 It can be seen that the clamping opening of the second clamping device 30 is a square structure. Figure 5 It can be seen that the clamping opening of the first clamping device 21 is a hexagonal structure. Such a design can effectively prevent the grouting pipe 7 from being difficult to detach from the clamping opening due to the same structure.

[0088] In addition, in order to further ensure that the grouting pipe 7 is not easily loosened after being clamped by the first clamping device 21 and the second clamping device 30, the central through hole of the pipe pulling flange 300 is not on the same axis as the central through hole of the pipe rotating flange 210. In other words, the clamping opening of the first clamping device 21 and the clamping opening of the second clamping device 30 are not on the same axis, and the two are staggered at a certain distance in horizontal position, such as 1 to 3 cm, so that the grouting pipe 7 can be pulled out from the clamping opening by the staggered force.

[0089] Since the device is heavy and difficult to adjust, in order to solve this problem, Fig.10 As shown, the longitudinal slide 4 is also included, and the longitudinal slide 4 includes a slide rail 40, a slide block 41, a slide base 42, a slide bearing seat 43, a slide screw 45 and a slide turntable 46. Two slide rails 40 are fixedly arranged on the slide base 42 in parallel.

[0090] The two slide rails 40 are slidably provided with slide blocks 41, and the bottom plate 10 is fixedly connected to the slide blocks 41. A slide bearing seat 43 is fixedly provided on one side of the slide base 42, and a bearing is provided therein, and a slide screw 45 is rotatably passed through the bearing. One end of the slide screw 45 is rotatably connected to the bottom of the bottom plate 10, and the other end of the slide screw 45 is fixedly connected to the slide turntable 46.

[0091] In addition, a lifting platform 5 is also included, and the lifting platform 5 includes a lifting platform base 50, a lifting platform sliding sleeve 51, a lifting platform slide rod 52, a lifting platform screw rod 53, and a lifting platform turntable 54. A plurality of lifting platform sliding sleeves 51 are fixedly arranged on the lifting platform base 50, and a lifting platform slide rod 52 is slidably inserted in the lifting platform sliding sleeve 51, and the top of the lifting platform slide rod 52 is fixedly connected to the bottom of the slide base 42. The bottom of the slide base 42 is also rotatably connected to the lifting platform screw rod 53, and the lifting platform screw rod 53 is inserted in the lifting platform base 50. A lifting platform turntable 54 is also rotatably arranged on the lifting platform base 50, and a threaded hole is opened in the center of the lifting platform turntable 54, and the threaded hole matches the lifting platform screw rod 53, and the lifting platform screw rod 53 is inserted in the threaded hole of the lifting platform turntable 54.

[0092] The overall support frame 6 is also included, and the overall support frame 6 includes a top plate 60 and support legs 61. Four support legs 61 are fixedly arranged at the four corners of the bottom of the top plate 60. A lifting platform base 50 is fixedly arranged on the top of the top plate 60, and a slide rod hole 600 is opened on the top plate 60, and the lifting platform slide rod 52 can be inserted into the slide rod hole 600.

[0093] The clamping cylinder 215 , the linear motion mechanism 31 , and the tube pulling clamping cylinder 306 are all linear hydraulic cylinders, linear air cylinders, or linear electric cylinders.

[0094] In addition, it also includes a control system and a grouting device. The control system includes a controller and a solenoid valve, a contactor or a frequency converter. The grouting device includes a grouting pump, a grouting hose and a pressure gauge. The inlet and outlet of the grouting pump are respectively connected to the grouting hose, and the grouting hose at the outlet of the grouting pump is connected to the outer end of the grouting pipe pre-buried in the second lining arch; the pressure gauge is used to detect the pressure in the grouting pipe. The output end of the controller is connected to the solenoid valve and the contactor respectively, and the solenoid valve is used to control the action of the linear motion mechanism and the clamping device. The contactor or frequency converter is used to control the grouting pump. In order to facilitate external control, the controller is also connected to the control button or communication module to receive external control instructions. The communication module includes a wireless communication module or a wired communication module, which can realize remote control. Since such a control system is relatively simple, it is a common timing control method, such as PLC control or single-chip microcomputer control, and the grouting mechanism is also an existing technology, so it will not be described in detail here.

[0095] When working, first Figure 1The tunnel secondary lining arch anti-emptying longitudinal pipe-retracting type molded grouting equipment shown is transported and moved to a trolley, and the height of the slide base 42 can be adjusted up and down by rotating the lifting platform turntable 54. When the lifting platform turntable 54 rotates forward, the lifting platform screw 53 is relatively reversed, the lifting platform screw 53 rises, and the slide base 42 also rises, and vice versa. When the slide turntable 46 is rotated, the slide screw 45 is also driven to rotate, and the slide screw 45 drives the bottom plate 10 to move longitudinally along the slide guide rail 40 to achieve left and right adjustment. The above mechanisms are all mature technologies and can be directly applied or referenced.

[0096] After adjusting the rotating mechanism 2 to the grouting pipe 7 pre-buried in the second lining vault by using the lifting platform 5 and the longitudinal slide 4, the grouting pipe 7 is inserted into the rotating mechanism 2 and the pipe pulling mechanism 3, and extends from the tail of the pipe pulling mechanism 3, as shown in FIG. Fig.11 Shown, the structure of the tunnel is omitted in the figure. A hose connected with cement slurry is put on the end of the grouting pipe 7.

[0097] After installation, start the control system. The control system first controls the swing hydraulic cylinder as the rotating device 20 to return to its original position, that is, the first clamping device 21 is perpendicular to the ground; then the clamping cylinder 215 in the first clamping device 21 is controlled to push out its piston rod 2150, thereby driving the rotating tube movable semi-cylinder 214 to move upward and clamp the grouting tube 7; at this time, the pipe pulling mechanism 3 does not work and is in a loose state. After the first clamping device 21 clamps the grouting tube 7, the rotating device 20 drives the first clamping device 21 and the grouting tube 7 to rotate 60°; then the clamping cylinder 215 is controlled to retract its piston rod 2150, thereby loosening the grouting tube 7; after loosening, the rotating device 20 rotates 60° in the opposite direction and returns to its original state; then the clamping cylinder 215 in the first clamping device 21 is controlled to push out its piston rod 2150, thereby driving the rotating tube movable semi-cylinder 214 to move upward and clamp the grouting tube 7; then the rotating device 20 drives the first clamping device 21 and the grouting tube 7 to rotate 60°. This cycle can be repeated to continuously realize the rotation of the grouting pipe 7. For each rotation of the grouting pipe 7, the rotating mechanism 2 needs to coordinate 6 times. Such a design can avoid the pipeline connected to the clamping cylinder 215 from being entangled and causing a malfunction. Through the above-mentioned rotation, the problem of the grouting pipe 7 being firmly fixed by concrete solidification can be prevented.

[0098] When the concrete of the second lining reaches a certain hardness, cement slurry begins to be injected into the vault cavity. At this time, the control system first stops the rotation operation of the rotating mechanism 2 and controls the first clamping device 21 to loosen. Then the tube pulling clamping cylinder 306 on the second clamping device 30 is controlled to extend its piston rod 3060, driving the tube pulling movable semi-cylinder 305 to clamp the grouting pipe 7; after clamping, the linear motion mechanism 31 is controlled to move outward, that is, the piston rod of the hydraulic cylinder extends outward. During the extension process, the grouting pipe 7 can be driven to be pulled out a distance. After the pulling action is completed, the control system controls the grouting pump to pump cement slurry from the hose into the grouting pipe 7, thereby realizing a step of grouting. During the grouting process, the pressure on the pipeline can be used to determine whether it is full. After it is full, the grouting at this stage can be stopped and the next grouting cycle can be entered. After the grouting is full, the control system controls the grouting pump to stop working, and then repeats the above-mentioned actions again: control the tube pulling clamping cylinder 306 on the second clamping device 30 to extend its piston rod 3060, driving the tube pulling movable semi-cylinder 305 to clamp the grouting pipe 7; after clamping, control the linear motion mechanism 31 to move outward, that is, the piston rod of the hydraulic cylinder extends outward. During the extension process, the grouting pipe 7 can be driven to be pulled out a distance. After the pulling out action is completed, the control system controls the grouting pump to pump cement slurry from the hose into the grouting pipe 7. This cycle is repeated, and the grouting work can be completed little by little. Due to the use of hydraulic clamping and tube pulling, the workload of the operator is greatly reduced.

Claims

1. A tunnel secondary lining arch anti-emptying longitudinal pipe withdrawal type mold grouting equipment, characterized in that: It comprises a base (1), a rotating mechanism (2), and a tube pulling mechanism (3); The rotating mechanism (2) and the tube pulling mechanism (3) are respectively fixed on the base (1); The rotating mechanism (2) comprises a rotating device (20) and a first clamping device (21); The rotating device (20) is a hollow structure, and the rotating part of the rotating device (20) is fixedly connected to the first clamping device (21); the rotating part of the rotating device (20) can drive the first clamping device (21) to rotate at a certain angle; The tube pulling mechanism (3) comprises a second clamping device (30), a linear motion mechanism (31) and a tube pulling connecting frame (32); A linear motion mechanism (31) is fixedly arranged on the base (1), a moving part of the linear motion mechanism (31) is fixedly connected to the tube pulling connecting frame (32), and one side of the tube pulling connecting frame (32) is fixedly connected to the second clamping device (30); The grouting pipe can be passed through the rotating device (20), the first clamping device (21) and the second clamping device (30), and can be clamped or released by the first clamping device (21) and the second clamping device (30); The base (1) comprises a bottom plate (10), a rotating mechanism fixing platform (11), a door frame (13), and a supporting arm (14); A rotating mechanism fixing platform (11) is fixedly arranged at one end of the bottom plate (10), and the rotating device (20) is fixedly arranged on the rotating mechanism fixing platform (11); A door frame (13) is fixedly provided at the other end of the base plate (10), the door frame (13) is an arch-shaped structure, and the linear motion mechanism (31) is fixedly provided on both sides of the door frame (13) close to the rotating device (20); Two support arms (14) are respectively fixedly arranged on both sides of the other side of the door frame (13) away from the rotating device (20), and the support arms (14) are vertically arranged on the door frame (13); The tube pulling connection frame (32) comprises a guide rail (320), a sliding block (321), a supporting connection beam (322), and a supporting connection flange (323); The guide rails (320) are respectively fixedly arranged on the support arms (14), and the sliders (321) are slidably arranged on the guide rails (320); The supporting connection beam (322) is in an L-shaped structure, the bottom of which is fixedly arranged on the sliding block (321), and the supporting connection flange (323) is fixedly arranged on one side of the middle portion of the supporting connection beam (322); The moving part of the linear motion mechanism (31) is fixedly connected to the supporting connection beam (322), and the forward and backward movement of the moving part of the linear motion mechanism (31) can drive the supporting connection beam (322) and the sliding block (321) to slide forward and backward along the guide rail (320); The supporting connection flange (323) is fixedly connected to the second clamping device (30).

2. The tunnel secondary lining arch anti-emptying longitudinal pipe withdrawal type molded grouting equipment according to claim 1 is characterized by: The bottom plate (10) is also provided with an empty slot (12); A rib plate (15) is also fixedly arranged between the support arm (14) and the door frame (13); The rotating mechanism fixing platform (11) is in an inverted U-shaped structure.

3. The tunnel secondary lining arch anti-emptying longitudinal pipe-retracting type molded grouting equipment according to claim 1 is characterized in that: The rotating device (20) is a swing hydraulic cylinder with a flange; The first clamping device (21) comprises a rotating tube flange (210), a rotating tube fixing semi-cylinder (211), a rotating tube slide rod fixing ear (212), a rotating tube slide rod (213), a rotating tube movable semi-cylinder (214) and a clamping cylinder (215); The rotating tube flange (210) is in a disc-shaped structure, with a through hole in the center. A rotating tube fixing semi-cylinder (211) is fixedly arranged around the center of the rotating tube flange (210) on one side. The rotating tube fixing semi-cylinder (211) is a semi-cylindrical structure, with a clamping opening at the center, and rotating tube sliding rod fixing ears (212) are fixedly arranged on both sides of the rotating tube fixing semi-cylinder (211); The rotating tube movable semi-cylinder (214) is also a semi-cylindrical structure, with a clamping opening in the center. Rotating tube sliding sleeves (2140) are fixedly arranged on both sides of the rotating tube movable semi-cylinder (214). The rotating tube movable semi-cylinder (214) and the rotating tube fixed semi-cylinder (211) correspond to each other. The clamping cylinder (215) is a linear motion cylinder, and a rotating tube slide rod (213) is fixedly arranged on both sides of the cylinder body, and the rotating tube slide rod (213) is inserted into the rotating tube sliding sleeve (2140) and the rotating tube slide rod fixing ear (212); The bottom of the rotating tube movable semi-cylinder (214) is fixedly connected to one end of the piston rod (2150) of the clamping cylinder (215), and the rotating tube movable semi-cylinder (214) can be driven to slide up and down along the rotating tube sliding rod (213) through the extension and retraction of the piston rod (2150); The rotating part of the rotating device (20) is fixedly connected to the rotating pipe flange (210).

4. The tunnel secondary lining arch anti-emptying longitudinal pipe-retracting type molded grouting equipment according to claim 3 is characterized by: The linear motion mechanism (31) is a linear hydraulic cylinder; The second clamping device (30) comprises a tube pulling flange (300), a tube pulling fixing semi-cylinder (301), a tube pulling slide bar fixing ear (303), a tube pulling slide bar (304), a tube pulling movable semi-cylinder (305) and a tube pulling clamping cylinder (306); The tube pulling flange (300) is a disc-shaped structure with a through hole in the center. A tube pulling fixing semi-cylinder (301) is fixedly arranged on one side of the tube pulling flange (300). Tube pulling slide bar fixing ears (303) are fixedly arranged on both sides of the tube pulling fixing semi-cylinder (301). A tube pulling slide bar (304) is fixedly arranged in the tube pulling slide bar fixing ears (303). The tube pulling sliding rod (304) may also be slidably provided with the tube pulling movable semi-cylinder (305); The bottom of the tube pulling slide bar (304) is fixedly connected to the tube pulling clamping cylinder (306); The piston rod (3060) of the tube pulling clamping cylinder (306) is fixedly connected to the bottom of the tube pulling movable semi-cylinder (305).

5. The tunnel secondary lining arch anti-emptying longitudinal pipe withdrawal type mold grouting equipment according to claim 4 is characterized by: The central through hole of the pipe pulling flange (300) and the central through hole of the pipe rotating flange (210) are not on the same axis.

6. The tunnel secondary lining arch anti-emptying longitudinal pipe-retracting type molded grouting equipment according to claim 4 or 5, characterized in that: It also includes a longitudinal slide (4), wherein the longitudinal slide (4) includes a slide rail (40), a slide block (41), a slide base (42), a slide bearing seat (43), a slide screw (45) and a slide turntable (46); Two slide rails (40) are fixedly arranged in parallel on the slide base (42); The two slide rails (40) are respectively slidably provided with slide blocks (41), and the bottom plate (10) is fixedly connected to the slide blocks (41); A slide bearing seat (43) is fixedly provided on one side of the slide base (42), wherein a bearing is provided inside the slide bearing, and the slide screw rod (45) is rotatably passed through the bearing; One end of the slide screw rod (45) is rotatably connected to the bottom of the base plate (10), and the other end of the slide screw rod (45) is fixedly connected to the slide turntable (46).

7. The tunnel secondary lining arch anti-emptying longitudinal pipe withdrawal type molded grouting equipment according to claim 6 is characterized by: It also includes a lifting platform (5), wherein the lifting platform (5) includes a lifting platform base (50), a lifting platform sliding sleeve (51), a lifting platform sliding rod (52), a lifting platform screw rod (53), and a lifting platform turntable (54); A plurality of lifting platform sliding sleeves (51) are fixedly arranged on the lifting platform base (50), a lifting platform sliding rod (52) is slidably inserted into the lifting platform sliding sleeve (51), and the top of the lifting platform sliding rod (52) is fixedly connected to the bottom of the sliding platform base (42); The bottom of the slide base (42) is also rotatably connected to the lifting platform screw rod (53), and the lifting platform screw rod (53) is inserted into the lifting platform base (50). A lifting platform turntable (54) is also rotatably arranged on the lifting platform base (50), and a threaded hole is opened at the center of the lifting platform turntable (54), which is matched with the lifting platform screw rod (53), and the lifting platform screw rod (53) is inserted into the threaded hole of the lifting platform turntable (54).

8. The tunnel secondary lining arch anti-emptying longitudinal pipe-retracting type grouting equipment according to claim 7 is characterized in that: It also includes an overall support frame (6), wherein the overall support frame (6) includes a top plate (60) and support legs (61); Four supporting legs (61) are fixedly arranged at the four corners of the bottom of the top plate (60); A lifting platform base (50) is fixedly arranged on the top plate (60), and a slide rod hole (600) is opened on the top plate (60), and the lifting platform slide rod (52) can be inserted into the slide rod hole (600).

9. The tunnel secondary lining arch anti-emptying longitudinal pipe withdrawal type mold grouting equipment according to claim 4 is characterized by: The clamping cylinder (215), the linear motion mechanism (31), and the tube pulling clamping cylinder (306) are all linear hydraulic cylinders, linear air cylinders, or linear electric cylinders.

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