A tunnel lining arch grouting device with mold

Abstract

The present invention relates to the technical field of tunnel construction, and in particular to a tunnel lining vault grouting device with a mold, comprising a walking mechanism, a slurry making mechanism, a slurry storage mechanism, a grouting mechanism and a control mechanism, wherein the walking mechanism comprises a walking trolley and a pull rod, and the slurry making mechanism, the slurry storage mechanism, the grouting mechanism and the control mechanism are all arranged on the walking trolley, the slurry making mechanism comprises a slurry making barrel, a stirring component 1 is arranged in the slurry making barrel, a dredging component is arranged on the outer side of the slurry making barrel, the slurry storage mechanism comprises a slurry storage barrel, the slurry storage barrel is connected to the slurry making barrel through a slurry delivery pipe 1, a stirring component 2 is arranged in the slurry storage barrel, the grouting mechanism comprises a grouting pump, the grouting pump is connected to the slurry storage barrel through a slurry delivery pipe 2, and a slurry outlet pipe is also connected to the grouting pump. The present invention adopts the above-mentioned tunnel lining vault grouting device with a mold, and the grouting device has a simple structure, occupies a small space, is easy to operate, has high working efficiency, and has a good grouting effect.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, in particular to a tunnel lining arch grouting device with a mold. Background Art

[0002] Tunnel engineering is an important part of road construction. When the secondary lining concrete of the tunnel in the tunnel engineering is poured with a secondary formwork trolley, the arch will produce cavities due to factors such as air pockets in the arch part of the waterproof board, insufficient concrete fluidity, and insufficient concrete injection. These cavities are not easy to find during the pouring process. In order to solve the hollowing of the tunnel lining arch, avoid the "two-layer skin" phenomenon of hollowing grouting in the later stage, and promptly repair the cold joints and circumferential construction joints of the arch lining construction, and promptly remedy the insufficient lining thickness caused by various reasons, it is necessary to grout before the concrete is initially set. The required grouting material has the characteristics of low water-cement ratio and high viscosity, and the required grouting machine requires high pumping pressure. Since the lining concrete is newly poured concrete and has not formed strength, in order to protect the quality of the lining concrete and the pumping pressure needs to be controllable, it must automatically stop when a certain pressure is reached.

[0003] The tunnel grouting machine in the prior art generally uses a pouring trolley to pour the lining layer, and the pouring trolley is mainly composed of a main feed hopper, a sub-hopper, a cut-off plug plate and chutes leading to each window, etc., and the concrete is fed into the pouring cavity through the chute, but it has high installation space requirements, low automation, and many manual operation procedures. Therefore, the present invention provides a grouting device dedicated to a tunnel lining vault with a mold, which is small in size and simple to operate, and provides a grouting process using the grouting device. Summary of the invention

[0004] The purpose of the present invention is to provide a tunnel lining vault grouting device with a mold, which has a simple structure, small footprint, convenient operation, high working efficiency and good grouting effect.

[0005] To achieve the above-mentioned purpose, the present invention provides a tunnel lining vault mold grouting device, comprising a walking mechanism, a slurry making mechanism, a slurry storage mechanism, a grouting mechanism and a control mechanism, the walking mechanism comprising a walking trolley and a pull rod, the slurry making mechanism, the slurry storage mechanism, the grouting mechanism and the control mechanism are all arranged on the walking trolley, the slurry making mechanism comprises a slurry making barrel, a stirring component 1 is arranged in the slurry making barrel, a dredging component is arranged on the outer side of the slurry making barrel, the slurry storage mechanism comprises a slurry storage barrel, the slurry storage barrel is connected with the slurry making barrel through a slurry delivery pipe 1, a stirring component 2 is arranged in the slurry storage barrel, the grouting mechanism comprises a grouting pump, the grouting pump is connected with the slurry storage barrel through a slurry delivery pipe 2, and a slurry outlet pipe is also connected to the grouting pump.

[0006] Preferably, a barrel cover is also provided on the top of the pulping barrel, and an opening assembly connected to the barrel cover is provided on the outside of the pulping barrel, the opening assembly includes a connecting plate 1, a telescopic cylinder 1 and a Y-shaped connecting rod, the connecting plate 1 is fixedly connected to one side of the outer wall of the pulping barrel, one end of the telescopic cylinder 1 is hinged to the connecting plate 1, the other end of the telescopic cylinder 1 is hinged to the connecting end 1 of the connecting rod, the connecting end 2 of the connecting rod is hinged to the barrel cover, and a connecting seat 1 is also provided on one side of the top of the pulping barrel, and the connecting end 3 of the connecting rod is hinged to the connecting seat 1.

[0007] Preferably, the stirring component 1 includes a mountain-shaped stirring frame, a spiral stirring rod and a fixed plate. The spiral stirring rod is arranged in the stirring frame and around the middle rod of the stirring frame. The fixed plate is arranged at the top of the stirring frame. The bottom of the middle rod passes through the cross bar of the stirring frame and is connected to the rotating motor 1. The top of the middle rod is rotatably connected to the fixed plate. Gear 1 is provided on the top of the middle rod, an internal gear is provided in the fixed plate, and gear 2 is provided on the top of the spiral stirring rod. Gear 2 is meshingly connected between the internal gear and gear 1.

[0008] Preferably, a plurality of evenly distributed support rods are provided on the outer circumference of the fixed disk, one end of the support rod is fixedly connected to the fixed disk, and the other end of the support rod is fixedly connected to the inner wall of the pulping barrel.

[0009] Preferably, scraper blocks 1 are connected to the outer sides of the vertical rods on both sides of the stirring frame, and the end of scraper block 1 away from the vertical rod is a semi-circular end surface. Scraper blocks 2 are connected to the two sides of the cross bar of the stirring frame, and the end of scraper block 2 away from the cross bar is a 1 / 4 arc end surface with the arc surface facing upward.

[0010] Preferably, the dredging assembly includes a connecting plate 2, a telescopic cylinder 2 and a connecting seat 2. A material discharge port is provided at the bottom of the pulping barrel. The connecting seat 2 is arranged on the upper side of the material discharge port. A connecting plate 3 is hingedly connected to the middle part of the connecting seat 2. The bottom of the connecting plate 3 is fixedly connected to a baffle arranged on one side of the material discharge port. The connecting plate 2 is fixedly connected to the outer wall of the pulping barrel on the upper side of the material discharge port. One end of the telescopic cylinder 2 is hinged to the connecting plate 2, and the other end of the telescopic cylinder 2 is hinged to the baffle.

[0011] Preferably, the stirring component 2 includes a stirring rod 1, a stirring rod 2, a gear 3, a gear 4 and a stirring motor. A support frame is fixedly connected to the upper side of the slurry storage barrel, and a stirring motor and a support block are provided on the support frame. Gear 3 is connected to the output shaft of the stirring motor, gear 4 is meshed and connected to one side of gear 3, and the support block is rotatably connected to gear 4 through a rotating shaft. The side of gear 3 that is off-center is hinged to one end of limit rod 1, the side of gear 4 that is off-center is hinged to one end of limit rod 2, the other end of limit rod 1 is hinged to the other end of limit rod 2, stirring rod 1 is connected to the bottom of limit rod 1, stirring rod 2 is connected to the bottom of limit rod 2, and limit rod 1 and limit rod 2 are cross-arranged.

[0012] Preferably, one end of the slurry outlet pipe is connected to the grouting pump through a pressure relief valve, and the other end of the slurry outlet pipe is connected to the grouting pipe connector. A pressure buffer, a pressure sensor and a flow sensor are also provided on the slurry outlet pipe between the pressure relief valve and the grouting pipe connector.

[0013] A grouting process of a tunnel lining vault grouting device with a mold, comprising the following steps:

[0014] S1. Set up the lining formwork trolley, move the secondary lining formwork trolley to the arch top where grouting is to be done, adjust the height, and fix it firmly;

[0015] S2. Prepare and install the grouting pipe and exhaust pipe. According to the length of the second lining formwork trolley, cut two PVC flower pipes as the grouting pipe and exhaust pipe respectively. The grouting pipe and exhaust pipe are respectively drilled with overflow holes and exhaust holes at intervals in the length direction. The overflow holes on the grouting pipe are sealed with adhesive tape, and the exhaust holes on the exhaust pipe are sealed with breathable adhesive tape. The grouting pipe is not drilled with overflow holes within 2m of the end baffle of the second lining formwork trolley. The grouting pipe is closely laid in the center line area of ​​the arch waterproof board, and the overflow holes are vertically upward;

[0016] S3, connect the grouting device, move the grouting device to the bottom of the last cycle lining, and connect the grouting pipe of the grouting device with the grouting pipe;

[0017] S4. Prepare slurry in a slurry making mechanism according to a water-cement ratio of 0.38, a water reducing agent dosage of 0.4%, and a fluidity of 270 mm. The filling sequence of the slurry is to add water first, add the water reducing agent under stirring, and finally pour in cement;

[0018] S5, grouting operation, transferring the prepared slurry to the slurry storage mechanism, starting the grouting mechanism through the control mechanism, pumping the slurry in the slurry storage bucket into the grouting pipe through the slurry outlet pipe, and grouting the vault belt mold;

[0019] S6. End grouting. When the grouting pressure in the grouting pipe reaches 1.0Mpa and is kept stable for 3-5 minutes, and the flow sensor shows that the grouting volume has not increased, stop grouting.

[0020] S7. Seal the grouting pipe and the exhaust pipe, remove the grouting device, and after the grouting is completed, remove the slurry outlet pipe connected to the grouting pipe, seal the grouting pipe and the exhaust pipe with a head, move the grouting device to the bottom of the lining of the next cycle, and carry out the next cycle of vault grouting.

[0021] Preferably, the diameters of the overflow holes and the exhaust holes in S2 are both 6-8 mm, and the opening spacings between the overflow holes and the exhaust holes are both 20-30 m.

[0022] Beneficial effects of the present invention:

[0023] (1) The tunnel lining arch grouting device provided by the present invention has a simple structure, a small size, a small space occupation, and is easy to operate. It can simultaneously perform slurry making, slurry storage, and grouting, ensuring that slurry can be made synchronously during grouting, thereby avoiding the phenomenon of insufficient cement slurry during grouting and improving the work efficiency of grouting.

[0024] (2) The present invention provides a tunnel lining arch grouting device with a mold. The slurry making mechanism is provided with a dredging component, which can facilitate the dredging of a slurry barrel that has solidified or been blocked, thereby providing convenience for cleaning the slurry barrel. The slurry storage mechanism is provided with a stirring component 2, which can maintain continuous stirring of the cement slurry stored in the slurry storage barrel to prevent the stored cement slurry from settling, thereby improving the stability of the cement slurry and further improving the grouting effect of the arch arch with a mold.

[0025] (3) The grouting process of the tunnel lining arch grouting device with a mold provided by the present invention is simple to operate, saves time and effort, and saves a lot of labor costs.

[0026] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a top view of a tunnel lining vault grouting device with a mold according to the present invention;

[0028] Figure 2 is a schematic diagram of the pulping mechanism of the present invention;

[0029] Figure 3 is a schematic diagram of a stirring assembly 1 of the present invention;

[0030] Figure 4 is a schematic diagram of a stirring assembly of the present invention from a bottom perspective;

[0031] Figure 5 It is a schematic diagram of the slurry storage mechanism of the present invention.

[0032] Reference numerals:

[0033] 1. Walking mechanism;

[0034] 2. Pulping mechanism; 21. Pulping barrel; 22. Barrel cover;

[0035] 23. Opening assembly; 231. Connecting plate 1; 232. Telescopic cylinder 1; 233. Connecting rod; 2331. Connecting end 1; 2332. Connecting end 2; 2333. Connecting end 3; 234. Connecting seat 1;

[0036] 24, stirring component 1; 241, stirring frame; 2411, middle rod; 2412, horizontal rod; 2413, vertical rod; 242, spiral stirring rod; 243, fixed plate; 244, support rod; 245, gear 1; 246, gear 2; 247, rotating motor 1; 248, scraper block 1; 249, scraper block 2; 2410, internal gear;

[0037] 25. Dredging assembly; 251. Connecting plate 2; 252. Telescopic cylinder 2; 253. Connecting seat 2; 254. Connecting plate 3; 255. Baffle;

[0038] 3. Slurry storage mechanism; 31. Slurry storage barrel; 32. Slurry delivery pipe 1; 33. Mixing component 2;

[0039] 331, stirring rod 1; 332, stirring rod 2; 333, gear 3; 334, gear 4; 335, stirring motor; 336, support frame; 337, limit rod 1; 338, limit rod 2;

[0040] 4. Grouting mechanism; 41. Grouting pump; 42. Grouting pipe 2; 43. Grouting pipe;

[0041] 5. Control mechanism. DETAILED DESCRIPTION

[0042] The present invention is further described below in conjunction with the accompanying drawings and embodiments. Unless otherwise defined, the technical terms or scientific terms used in the present invention should be the common meanings understood by people with ordinary skills in the field to which the present invention belongs. The above-mentioned features or features mentioned in the specific examples mentioned in the present invention can be combined arbitrarily, and these specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0043] Example

[0044] See also Figures 1 to 5 As shown in the figure, the present invention provides a tunnel lining vault grouting device with mold, including a walking mechanism 1, a slurry making mechanism 2, a slurry storage mechanism 3, a grouting mechanism 4 and a control mechanism 5. The walking mechanism 1 includes a walking trolley and a pull rod. The slurry making mechanism 2, the slurry storage mechanism 3, the grouting mechanism 4 and the control mechanism 5 are all arranged on the walking trolley. The slurry making mechanism 2, the slurry storage mechanism 3 and the grouting mechanism 4 are all electrically connected to the control mechanism 5. The opening and closing of the slurry making mechanism 2, the slurry storage mechanism 3 and the grouting mechanism 4 are controlled by the control mechanism 5, which is convenient for operation.

[0045] The pulping mechanism 2 includes a pulping barrel 21, and a barrel cover 22 is provided on the top of the pulping barrel 21. The barrel cover 22 is used to seal the pulping barrel 21 to prevent the slurry from splashing out of the pulping barrel 21 when the slurry is prepared in the pulping barrel 21. An opening component 23 connected to the barrel cover 22 is provided on the outer side of the pulping barrel 21. The opening component 23 includes a connecting plate 231, a telescopic cylinder 232 and a Y-shaped connecting rod 233. The connecting plate 231 is fixedly connected to one side of the outer wall of the pulping barrel 21, one end of the telescopic cylinder 232 is hinged to the connecting plate 231, the other end of the telescopic cylinder 232 is hinged to the connecting end 2331 of the connecting rod 233, and the connecting end 2332 of the connecting rod 233 is hinged to the barrel cover 22. A connecting seat 234 is also provided on one side of the top of the pulping barrel 21, and the connecting end 2333 of the connecting rod 233 is hinged to the connecting seat 234. The telescopic cylinder 232 is started by the control mechanism 5, and the telescopic cylinder 232 drives the connecting end 2331 of the connecting rod 233 to move up and down, and the connecting end 2333 of the connecting rod 233 rotates in the connecting seat 234, so that the connecting end 2332 of the connecting rod 233 rotates around the connecting seat 234, which can drive the barrel cover 22 to be lifted up to open or drop the barrel cover 22 downward to close, without manually opening the barrel cover 22, saving time and effort, and providing convenience for the preparation of slurry.

[0046] A stirring assembly 24 is provided in the pulping barrel 21, and the stirring assembly 24 is used to fully stir the slurry when preparing the slurry. The stirring assembly 24 includes a mountain-shaped stirring frame 241, a spiral stirring rod 242 and a fixed disk 243. A plurality of evenly distributed support rods 244 are also provided on the outer side of the circumference of the fixed disk 243. One end of the support rod 244 is fixedly connected to the fixed disk 243, and the other end of the support rod 244 is fixedly connected to the inner wall of the pulping barrel 21.

[0047] The spiral stirring rod 242 is arranged in the stirring frame 241 and is arranged around the middle rod 2411 of the mountain-shaped stirring frame 241. The fixed plate 243 is arranged at the top of the mountain-shaped stirring frame 241. The bottom of the middle rod 2411 passes through the cross bar 2412 of the stirring frame 241 and is connected to the rotating motor 247. The top of the middle rod 2411 is rotatably connected to the fixed plate 243. A gear 1 245 is provided on the top of the middle rod 2411. An internal gear 2410 is provided in the fixed plate 243. A gear 246 is provided on the top of the spiral stirring rod 242. The gear 246 is meshed and connected between the internal gear 2410 and the gear 1 245. The bottom of the fixed plate 243 is also provided with an edge for supporting and limiting the gear 246, thereby ensuring that the gear 246 can be firmly connected in the fixed plate 243.

[0048] The rotating motor 247 is started through the control mechanism 5, and the rotating motor 247 drives the stirring frame 241 to rotate. The middle rod 2411 of the stirring frame 241 drives the gear 1 245 to rotate. The gear 2 246 is limited by the cooperation between the gear 1 245 and the internal gear 2410, so that the gear 2 246 can rotate stably in the fixed disk 243, and the gear 2 246 drives the spiral stirring rod 242 to rotate to stir the raw materials in the pulping barrel 21. The vertical rods 2413 on both sides of the stirring frame 241 are against the side walls of the pulping barrel 21, and the cross bar 2412 of the stirring frame 241 is against the bottom wall of the pulping barrel 21. The outer sides of the vertical rods 2413 on both sides of the stirring frame 241 are connected with scraper blocks 248, and the scraper blocks 248 on both sides are staggered, and the end of the scraper block 248 away from the vertical rod 2413 is a semi-circular end face, and the cross bar 2412 of the stirring frame 241 is connected with scraper blocks 249 on both sides, and the scraper blocks 249 on both sides are staggered, and the end of the scraper block 249 away from the cross bar 2412 is a 1 / 4 arc end face with the arc surface upward. By cooperating with scraper block 1 248 and scraper block 249 and vertical rod 2413 and horizontal rod 2412 of stirring frame 241, cement slurry adhering to the inner wall of slurry barrel 21 can be scraped off, so that the cement slurry in slurry barrel 21 can be fully mixed, thus ensuring the uniformity and stability of the prepared cement slurry.

[0049] A dredging assembly 25 is provided on the outside of the pulping barrel 21. The dredging assembly 25 is provided so that when the slurry in the pulping barrel 21 solidifies or becomes clogged, the bottom of the pulping barrel 21 can be opened for dredging. The dredging assembly 25 comprises a second connecting plate 251, a second telescopic cylinder 252 and a second connecting seat 253. A material discharge port is provided at the bottom of the pulping barrel 21. The second connecting seat 253 is provided on the upper side of the material discharge port. A third connecting plate 254 is hingedly connected to the middle of the second connecting seat 253. The bottom of the third connecting plate 254 is fixedly connected to a baffle 255 provided on one side of the material discharge port. The second connecting plate 251 is fixedly connected to the outer wall of the pulping barrel 21 on the upper side of the material discharge port. One end of the second telescopic cylinder 252 is hingedly connected to the second connecting plate 251, and the other end of the second telescopic cylinder 252 is hingedly connected to the baffle 255. When in use, the control mechanism 5 starts the telescopic cylinder 252, and the baffle 255 is driven to rotate by the telescopic cylinder 252, so that the material discharge port can be opened to clear the inside of the pulping barrel 21.

[0050] The slurry storage mechanism 3 includes a slurry storage barrel 31, which is connected to the slurry making barrel 21 through a slurry delivery pipe 32. After slurrying is completed in the slurry making barrel 21, the prepared cement slurry is transported to the slurry storage barrel 31 for storage, so that when grouting, the cement slurry stored in the slurry storage barrel 31 is used for grouting. At the same time, cement slurry can also be prepared in the slurry making barrel 21, which can avoid the phenomenon of insufficient cement slurry during grouting and improve the work efficiency of grouting.

[0051] The slurry storage barrel 31 is provided with a stirring assembly 2 33, and the stirring assembly 2 33 includes a stirring rod 1 331, a stirring rod 2 332, a gear 333, a gear 4 334 and a stirring motor 335. A support frame 336 is fixedly connected to one side of the upper side of the slurry storage barrel 31, and a stirring motor 335 and a support block are provided on the support frame 336. The gear 333 is connected to the output shaft of the stirring motor 335, and the gear 4 334 is meshed and connected to one side of the gear 333. The support block rotates The shaft is rotationally connected to gear four 334, the side of gear three 333 that deviates from the center is hinged to one end of limit rod one 337, the side of gear four 334 that deviates from the center is hinged to one end of limit rod two 338, the other end of limit rod one 337 is hinged to the other end of limit rod two 338, the stirring rod one 331 is connected to the bottom of limit rod one 337, the stirring rod two 332 is connected to the bottom of limit rod two 338, and limit rod one 337 and limit rod two 338 are cross-arranged.

[0052] The stirring motor 335 is started by the control mechanism 5, and the stirring motor 335 drives the gear three 333 to rotate, and the gear four 334 meshing with the gear three 333 also rotates synchronously, and the gear three 333 and the gear four 334 drive one end of the limit rod one 337 and the limit rod two 338 to rotate eccentrically, so that the limit rod one 337 and the limit rod two 338 drive the stirring rod one 331 and the stirring rod two 332 to reciprocate up, down, left and right respectively, so as to stir the cement slurry in the slurry storage barrel 31 and prevent the cement slurry from settling.

[0053] The grouting mechanism 4 includes a grouting pump 41, which is connected to the grouting bucket 31 through a grouting pipe 42. A grouting pipe 43 is also connected to the grouting pump 41. One end of the grouting pipe 43 is connected to the grouting pump 41 through a pressure relief valve, and the other end of the grouting pipe 43 is connected to a grouting pipe connector. The grouting pipe 43 is connected to the grouting pipe at the arch through the grouting pipe connector. A pressure buffer, a pressure sensor, and a flow sensor are also provided on the grouting pipe 43 between the pressure relief valve and the grouting pipe connector (the pressure relief valve, the pressure buffer, the pressure sensor, and the flow sensor are all prior art, so they are not shown in the drawings).

[0054] The slurry in the slurry storage tank enters the grouting pump 41 through the grouting pipe 42, and enters the grouting pipe 43 after being pressurized by the grouting pump 41. The cement slurry in the grouting pipe 43 passes through the pressure sensor and the flow sensor, and is input into the grouting pipe and finally reaches the grouting cavity. After the grouting is full, a certain pressure is generated and fed back to the pressure sensor. When the pressure reaches the set pressure, the pressure sensor transmits the data to the pressure gauge of the control mechanism 5 through the pressure buffer. After the pressure gauge reaches the set pressure, the control mechanism 5 controls the grouting pump 41 to stop working. The flow sensor is used to measure the volume of the injected cement slurry, which is convenient for monitoring the grouting amount and controlling the grouting amount.

[0055] Example 2

[0056] A grouting process of a tunnel lining vault grouting device with a mold, comprising the following steps:

[0057] S1. Set up the lining formwork trolley, move the secondary lining formwork trolley to the arch top where grouting is to be done, adjust the height, and fix it firmly;

[0058] S2. Prepare and install the grouting pipe and exhaust pipe. According to the length of the second lining formwork trolley, two PVC flower pipes are cut as the grouting pipe and exhaust pipe respectively. The grouting pipe and exhaust pipe are respectively drilled with overflow holes and exhaust holes at intervals in the length direction. The apertures of the overflow holes and exhaust holes are both 6-8 mm, and the opening spacing of the overflow holes and exhaust holes is 20-30 m. The overflow holes on the grouting pipe are sealed with adhesive tape, and the exhaust holes on the exhaust pipe are sealed with breathable adhesive tape. The grouting pipe is not drilled with overflow holes within 2 m near the end baffle 255 of the second lining formwork trolley. The grouting pipe is closely laid in the center line area of ​​the arch waterproof board, and the overflow holes are vertically upward;

[0059] S3, connect the grouting device, move the grouting device to below the previous cycle lining, and connect the grouting pipe 43 of the grouting device to the grouting pipe;

[0060] S4, prepare slurry, and prepare slurry in the slurry barrel 21 of the slurry making mechanism 2 according to the water-cement ratio of 0.38, the water reducing agent dosage of 0.4%, and the fluidity of 270 mm. The filling order of the slurry is to add water first, add the water reducing agent under stirring, and finally pour in the cement;

[0061] S5, grouting operation, the prepared slurry is transferred to the slurry storage barrel 31 of the slurry storage mechanism 3 through the slurry delivery pipe 1 32, the grouting mechanism 4 is started by the control mechanism 5, the cement slurry in the slurry storage barrel 31 enters the grouting pump 41 through the slurry delivery pipe 2 42, and then the cement slurry is pumped into the grouting pipe through the slurry outlet pipe 43 to grout the vault belt mold;

[0062] S6. End grouting. When the grouting pressure in the grouting pipe reaches 1.0Mpa and is kept stable for 3-5 minutes, and the flow sensor shows that the grouting volume has not increased, stop grouting.

[0063] S7, plugging the grouting pipe and the exhaust pipe, removing the grouting device, after the grouting is completed, the grouting pipe 43 connected to the grouting pipe is removed, the grouting pipe and the exhaust pipe are plugged with a head, and the grouting device is moved to the bottom of the lining of the next cycle to carry out the vault grouting of the next cycle.

[0064] The grouting process of the tunnel lining arch grouting device with a mold of the present invention has a simple construction method, is time-saving and labor-saving, and saves a lot of labor costs.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A tunnel lining vault grouting device with a mold, characterized in that: It includes a walking mechanism, a pulping mechanism, a pulping storage mechanism, a grouting mechanism and a control mechanism. The walking mechanism includes a walking trolley and a pull rod. The pulping mechanism, the pulping mechanism, the pulping storage mechanism, the grouting mechanism and the control mechanism are all arranged on the walking trolley. The pulping mechanism includes a pulping barrel. A stirring component 1 is arranged in the pulping barrel. A dredging component is arranged on the outer side of the pulping barrel. The pulping storage mechanism includes a pulping barrel. The pulping barrel is connected with the pulping barrel through a pulping pipe 1. A stirring component 2 is arranged in the pulping barrel. The grouting mechanism includes a grouting pump. The grouting pump is connected with the pulping barrel through a pulping pipe 2. A slurry outlet pipe is also connected to the grouting pump. The stirring assembly 1 includes a mountain-shaped stirring frame, a spiral stirring rod and a fixed plate, the spiral stirring rod is arranged in the stirring frame and around the middle rod of the stirring frame, the fixed plate is arranged on the top of the stirring frame, the bottom of the middle rod passes through the cross bar of the stirring frame and is connected to the rotating motor 1, the top of the middle rod is rotatably connected to the fixed plate, the top of the middle rod is provided with a gear 1, the fixed plate is provided with an internal gear, the top of the spiral stirring rod is provided with a gear 2, and the gear 2 is meshed and connected between the internal gear and the gear 1; The outer sides of the vertical rods on both sides of the stirring frame are connected with a scraper block 1, and the end of the scraper block 1 away from the vertical rod is a semicircular arc end surface, and the two sides of the cross bar of the stirring frame are connected with a scraper block 2, and the end of the scraper block 2 away from the cross bar is a 1 / 4 arc end surface with an arc surface upward; A plurality of evenly distributed support rods are also provided on the outer circumference of the fixed disk, one end of the support rod is fixedly connected to the fixed disk, and the other end of the support rod is fixedly connected to the inner wall of the pulping barrel; The dredging assembly includes a connecting plate 2, a telescopic cylinder 2 and a connecting seat 2. A material discharge port is provided at the bottom of the pulping barrel. The connecting seat 2 is arranged on the upper side of the material discharge port. A connecting plate 3 is hingedly connected to the middle part of the connecting seat 2. The bottom of the connecting plate 3 is fixedly connected to a baffle arranged on one side of the material discharge port. The connecting plate 2 is fixedly connected to the outer wall of the pulping barrel on the upper side of the material discharge port. One end of the telescopic cylinder 2 is hinged to the connecting plate 2, and the other end of the telescopic cylinder 2 is hinged to the baffle.

2. A tunnel lining vault grouting device with mold according to claim 1, characterized in that: A barrel cover is also provided on the top of the pulping barrel, and an opening assembly connected to the barrel cover is provided on the outside of the pulping barrel, the opening assembly includes a connecting plate 1, a telescopic cylinder 1 and a Y-shaped connecting rod, the connecting plate 1 is fixedly connected to one side of the outer wall of the pulping barrel, one end of the telescopic cylinder 1 is hinged to the connecting plate 1, the other end of the telescopic cylinder 1 is hinged to the connecting end 1 of the connecting rod, the connecting end 2 of the connecting rod is hinged to the barrel cover, a connecting seat 1 is also provided on one side of the top of the pulping barrel, and the connecting end 3 of the connecting rod is hinged to the connecting seat 1.

3. The tunnel lining vault grouting device according to claim 1, characterized in that: The stirring component 2 includes a stirring rod 1, a stirring rod 2, a gear 3, a gear 4 and a stirring motor. A support frame is fixedly connected to the upper side of the slurry storage barrel, and a stirring motor and a support block are provided on the support frame. Gear 3 is connected to the output shaft of the stirring motor, gear 4 is meshed and connected to one side of gear 3, and the support block is rotatably connected to gear 4 through a rotating shaft. The side of gear 3 that deviates from the center is hinged to one end of limit rod 1, the side of gear 4 that deviates from the center is hinged to one end of limit rod 2, the other end of limit rod 1 is hinged to the other end of limit rod 2, stirring rod 1 is connected to the bottom of limit rod 1, stirring rod 2 is connected to the bottom of limit rod 2, and limit rod 1 and limit rod 2 are cross-arranged.

4. The tunnel lining vault grouting device according to claim 1, characterized in that: One end of the slurry outlet pipe is connected to the grouting pump through a pressure relief valve, and the other end of the slurry outlet pipe is connected to the grouting pipe connector. A pressure buffer, a pressure sensor and a flow sensor are also provided on the slurry outlet pipe between the pressure relief valve and the grouting pipe connector.

5. The grouting process of the tunnel lining vault grouting device with mold according to claim 1 is characterized in that: The following steps are involved: S1. Set up the lining formwork trolley, move the secondary lining formwork trolley to the arch top where grouting is to be done, adjust the height, and fix it firmly; S2. Prepare and install the grouting pipe and exhaust pipe. According to the length of the second lining formwork trolley, cut two PVC flower pipes as the grouting pipe and exhaust pipe respectively. The grouting pipe and exhaust pipe are respectively drilled with overflow holes and exhaust holes at intervals in the length direction. The overflow holes on the grouting pipe are sealed with adhesive tape, and the exhaust holes on the exhaust pipe are sealed with breathable adhesive tape. The grouting pipe is not drilled with overflow holes within 2m of the end baffle of the second lining formwork trolley. The grouting pipe is closely laid in the center line area of ​​the arch waterproof board, and the overflow holes are vertically upward; the apertures of the overflow holes and the exhaust holes are both 6~8mm, and the opening spacing of the overflow holes and the exhaust holes is 20~30m; S3, connect the grouting device, move the grouting device to the bottom of the last cycle lining, and connect the grouting pipe of the grouting device with the grouting pipe; S4. Prepare slurry in a slurry making mechanism according to a water-cement ratio of 0.38, a water reducing agent dosage of 0.4%, and a fluidity of 270 mm. The filling sequence of the slurry is to add water first, add the water reducing agent under stirring, and finally pour in cement; S5, grouting operation, transferring the prepared slurry to the slurry storage mechanism, starting the grouting mechanism through the control mechanism, pumping the cement slurry in the slurry storage barrel into the grouting pipe through the slurry outlet pipe, and grouting the vault belt mold; S6. End grouting. When the grouting pressure in the grouting pipe reaches 1.0Mpa and is kept stable for 3-5 minutes, and the flow sensor shows that the grouting volume has not increased, stop grouting. S7. Seal the grouting pipe and the exhaust pipe, remove the grouting device, and after the grouting is completed, remove the slurry outlet pipe connected to the grouting pipe, seal the grouting pipe and the exhaust pipe with a head, move the grouting device to the bottom of the lining of the next cycle, and carry out the next cycle of vault grouting.

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