Joint cleaning device and method for repairing lining cracks

Abstract

The invention relates to the technical field of tunnel construction, in particular to a crack cleaning device and method for repairing lining cracks. The joint cleaning device comprises a fixing frame and a polishing mechanism. The fixing frame is provided with a plurality of suction cups so that the fixing frame can be fixed to the surface of a lining. The fixing frame is provided with a rail. The grinding mechanism is arranged on the track in a sliding mode. During use, the fixing frame is fixed to a lining through the suction cups and covers a crack. In this way, the grinding mechanism is supported through the fixing frame, and then fatigue caused by the fact that constructors lift the grinding mechanism for a long time is avoided. And when the crack is polished, the polishing mechanism moves along the track to polish the crack. In the polishing process, only the polishing mechanism needs to be shifted to move along the trend of the crack, so that the polishing of the vault is more labor-saving.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction, and in particular to a crack cleaning device and method for repairing lining cracks. Background Art

[0002] Lining cracks are a common problem in tunnel engineering. To solve this problem, liquid glue or cement slurry or other adhesives are usually injected into the cracks to achieve the purpose of repair.

[0003] Before grouting or glue injection, the surface of the concrete component within 100mm on both sides of the crack needs to be polished and leveled with a sandblaster or grinder until a solid new aggregate surface is exposed. After checking that there is no oil stain or dirt, clean it with compressed air or a vacuum cleaner. Then, set the glue (slurry) injection nozzle and exhaust nozzle along the crack direction and fix the grouting nozzle and exhaust nozzle with sealant. At the same time, sealant is used to seal the gap opening so that the gap is only connected to the grouting nozzle and exhaust nozzle. Finally, glue or grouting is injected through the grouting nozzle.

[0004] There is no special tool for grinding both sides of the crack in the prior art. Conventional grinding machines or sandblasting machines are generally used. However, the cracks may be distributed in various places of the lining. If the cracks are located at the arch of the tunnel, the construction workers need to look up for a long time and hold the grinding machine or sandblasting machine to operate. The labor intensity is relatively high and the physical strength requirements of the construction workers are extremely high. Summary of the invention

[0005] The object of the present invention is to provide a crack cleaning device and method for repairing lining cracks, which can reduce the labor intensity of construction workers.

[0006] The embodiments of the present invention are implemented by the following technical solutions:

[0007] A crack cleaning device for repairing lining cracks comprises a fixing frame and a grinding mechanism; the fixing frame is provided with a plurality of suction cups so that the fixing frame can be fixed on the lining surface; the fixing frame is provided with a track; the grinding mechanism is slidably arranged on the track.

[0008] Furthermore, the grinding mechanism is provided with a moving mechanism; the moving mechanism includes a rotating wheel and a power component connected to the rotating wheel in a transmission manner; the rotating wheel is provided with an external thread; and the track is provided with a plurality of transmission teeth meshing with the external thread along its length direction.

[0009] Furthermore, the track is arranged along the length direction of the fixing frame; the fixing clamp is also provided with a screw along its width direction; the end of the track is provided with a driving tooth engaged with the screw, so that the track moves along the width direction of the fixing frame when the screw rotates.

[0010] Furthermore, the screw rods are disposed at both ends of the fixing frame; and a driving rod which is transmission-connected to the two screw rods is also disposed inside the fixing frame, so that the two screw rods are driven to rotate when the driving rod rotates.

[0011] Furthermore, the grinding mechanism includes a fixed part and a telescopic part; the fixed part is slidably connected to the track; the telescopic part is slidably connected to the fixed part; a plurality of compression springs are arranged between the fixed part and the telescopic part; the moving mechanism is arranged at the fixed part and is transmission-connected to the track; the grinding head of the grinding mechanism is arranged at the telescopic part.

[0012] Furthermore, the telescopic part is provided with a trumpet-shaped suction chamber; the grinding head includes a plurality of grinding roller brushes; the plurality of grinding roller brushes are arranged inside the suction chamber and located at the opening; the suction chamber is also provided with an air nozzle connected to an exhaust device.

[0013] Furthermore, the grinding head also includes two cleaning roller brushes; the two cleaning roller brushes are arranged inside the suction chamber and a plurality of the grinding roller brushes are located between the two cleaning roller brushes.

[0014] Furthermore, the opening of the suction chamber is provided with bristles along its circumference.

[0015] Furthermore, a pressure sensor is arranged inside the suction cup, so that the pressure sensor is pressed when the suction cup is adsorbed on the lining.

[0016] A method for cleaning cracks in lining, using the above-mentioned cleaning device for repairing cracks in lining; the cleaning method is to move a fixed frame to cover the cracks in the lining and fix the fixed frame to the lining surface through a plurality of suction cups; then move a grinding mechanism to a grinding starting point and start grinding; during the grinding process, move the grinding mechanism to move along the crack and always cover the crack; after the part covered by the fixed frame is polished, move the fixed frame to the next part to be polished and repeat the above operation

[0017] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0018] When the crack cleaning device for repairing lining cracks of the present invention is used, the fixing frame is fixed to the lining by a plurality of suction cups to cover the cracks. This allows the grinding mechanism to be supported by the fixing frame, thereby avoiding fatigue caused by the construction workers lifting the grinding mechanism for a long time. When grinding the cracks, the grinding mechanism can move along the track to grind the cracks. During the grinding process, it is only necessary to move the grinding mechanism to move along the direction of the cracks, making the grinding of the vault more labor-saving.

[0019] The moving mechanism is provided so that the grinding mechanism can automatically move along the direction of the crack, so that the construction personnel only need to move the fixed frame to the next grinding position and open the grinding mechanism after finishing grinding one position, which further reduces the labor intensity of the construction personnel.

[0020] The screw rod is arranged so that the grinding mechanism can move not only along the length direction of the fixed frame, but also along the width direction, thereby being able to adapt to the situation where the crack extends to both sides.

[0021] The telescopic part of the grinding mechanism is pressed against the lining by the compression spring, so that it can adapt to the curvature change of the lining surface, so that the grinding head always fits the lining surface. The grinding roller brush of the grinding head grinds the lining, and then the dust generated by grinding is cleaned by the cleaning roller brush. At the same time, the dust is sucked away in time with the help of the exhaust device, so that grinding and cleaning can be carried out simultaneously, and dust can also be avoided. The suction cup is equipped with a pressure sensor to detect the suction degree of the suction cup, so as to avoid the fixing frame falling due to loose adsorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the seam cleaning device of the present invention being used in a tunnel.

[0023] Figure 2 It is a side view of the seam cleaning device of the present invention.

[0024] Figure 3 It is a top view of the seam cleaning device of the present invention.

[0025] Figure 4 It is a schematic diagram of the interior of the seam cleaning device of the present invention.

[0026] Figure 5 for Figure 4 Enlarged view of point a in the middle.

[0027] Figure 6 for Figure 4 Enlarged view of point b in the middle.

[0028] Figure 7 A schematic diagram of the interior of the grinding device.

[0029] Figure 8 It is a side view of the grinding device.

[0030] Fig. 9 It is a schematic diagram of the structure of the suction cup.

[0031] Figure numerals: 1-fixed frame, 2-suction cup, 3-lining, 4-track, 5-rotor, 6-power component, 7-screw, 8-driving rod, 9-bevel gear, 10-fixed part, 11-telescopic part, 12-compression spring, 13-suction chamber, 14-grinding roller brush, 15-air nozzle, 16-cleaning roller brush, 17-bristles, 18-pressure sensor, 19-tunnel, 20-driving gear, 21-slide rail, 22-handle. DETAILED DESCRIPTION

[0032] like Figure 1-Figure 9 As shown, the present invention provides a crack cleaning device for repairing cracks in a lining 3, comprising a fixing frame 1 and a grinding mechanism. The fixing frame 1 is in the shape of a rectangular frame, and a suction cup 2 is arranged at each of its four corners so that the fixing frame 1 can be fixed to the surface of the lining 3. The construction requirements of the lining 3 are relatively high, and its surface is relatively smooth, with a height difference of no more than 2 mm. Therefore, it can be well adsorbed by the suction cup 2. At the same time, soft materials such as silicone can be arranged on the inner wall of the suction cup 2, so that it can be better sealed after adsorption to prevent the suction cup 2 from falling. At the same time, the suction cup 2 can also be connected to a vacuum pump so that the inside of the suction cup 2 is always kept in a vacuum state. The fixing frame 1 is provided with a track 4. The grinding mechanism can be slidably arranged on the track 4. As shown Figure 7 and Figure 8 As shown, the track 4 is a square track 4, so that the grinding mechanism can only move relative to the track 4 but cannot rotate.

[0033] When the crack cleaning device for repairing cracks in lining 3 of the present invention is used, a fixing frame 1 is fixed to lining 3 by a plurality of suction cups 2 to cover the cracks. This allows the grinding mechanism to be supported by the fixing frame 1, thereby avoiding fatigue caused by the construction workers lifting the grinding mechanism for a long time. When grinding the cracks, the grinding mechanism moves along the track 4 to grind the cracks. During the grinding process, it is only necessary to move the grinding mechanism along the direction of the cracks, making the grinding of the vault more labor-saving.

[0034] In this embodiment, the grinding mechanism is provided with a moving mechanism. Figure 8 As shown, the moving mechanism includes a rotating wheel 5 and a power component 6 connected to the rotating wheel 5 by transmission. The power component 6 can be a motor, and its rotation can drive the rotating wheel 5 to rotate. The rotating wheel 5 is provided with an external thread. The track 4 is provided with a plurality of transmission teeth meshed with the external thread along its length direction. When the rotating wheel 5 rotates, the external thread of the rotating wheel 5 cooperates with the transmission teeth to make the rotating wheel 5 move relative to the track 4, and then the grinding mechanism moves relative to the track 4. When in use, the fixing clamp is fixed in a suitable position and the power component 6 is turned on to make the grinding mechanism automatically move along the direction of the crack. As a result, the construction personnel only need to move the fixing frame 1 to the next grinding position and turn on the grinding mechanism after finishing grinding in one place, which further reduces the labor intensity of the construction personnel.

[0035] In this embodiment, the track 4 is arranged along the length direction of the fixing frame 1. Figure 4 As shown, screws 7 are provided at both ends of the fixing clamp along the width direction thereof. The end of the track 4 is provided with driving teeth meshing with the screws 7, so that the track 4 moves along the width direction of the fixing frame 1 when the screws 7 rotate. In practice, the cracks do not extend along a straight line, but are curved. Therefore, the grinding mechanism also needs to move in both the length and width directions of the track 4 during the grinding process. The rotation of the screws 7 can drive the track 4 to move along the width direction of the fixing frame 1, thereby causing the grinding mechanism to move along the width direction of the fixing frame 1.

[0036] The screw rod 7 is provided so that the grinding mechanism can move not only along the length direction of the fixing frame 1, but also along the width direction. This can adapt to the situation where the crack extends to both sides. In order to make the movement of the track 4 more stable, the interior of both ends of the fixing frame 1 is equipped with slide rails 21 to match the track 4.

[0037] A driving rod 8 is also provided inside the fixing frame 1 and is transmission-connected to the two screw rods 7, so that when the driving rod 8 rotates, the two screw rods 7 are driven to rotate. Figure 4 and Figure 6 As shown, bevel gears 9 are provided at both ends of the driving rod 8. Both screw rods 7 are provided with bevel gears 9 and both screw rods 7 are connected to one end of the driving rod 8 through bevel gears 9. A bevel gear 9 is also provided in the middle of the driving rod 8. Correspondingly, the fixing frame 1 is also provided with a bevel driving gear 20. The driving gear 20 is meshed with the bevel gear 9 in the middle of the driving rod 8. The driving gear 20 rotates to make the driving rod 8 and the two screw rods 7 rotate synchronously. This makes the track 4 move along the width direction of the fixing frame 1.

[0038] For the rotation of the driving gear 20, a fixed handle 22 can be provided, or a detachable handle 22 can be provided. Specifically, the driving gear 20 is provided with a hexagonal connection hole. The handle 22 is provided with a hexagonal connection end, which can be inserted into the connection hole to connect the handle 22 to the driving gear 20. When in use, the grinding device automatically moves along the track 4. At the same time, the grinding device can be moved along the width direction of the fixed frame 1 by manually operating the handle 22 to rotate, so that the grinding device always covers the crack. When the handle 22 is not needed, it can be removed.

[0039] In order to facilitate operation, a hole for inserting the rotating handle 22 is provided on the front of the fixing frame 1. Figure 3 and Figure 4 as shown.

[0040] In this embodiment, the grinding mechanism includes a fixed part 10 and a telescopic part 11. The fixed part 10 is slidably connected to the track 4, and is used to drive the entire grinding mechanism to move along the track 4. The telescopic part 11 is slidably connected to the fixed part 10, and a slide groove and a slider can be specifically provided between the two to make the sliding between the two more stable. A plurality of compression springs 12 are provided between the fixed part 10 and the telescopic part 11. The moving mechanism is provided at the fixed part 10 and is transmission-connected to the track 4. The grinding head of the grinding mechanism is provided at the telescopic part 11.

[0041] During the grinding process, since the inner wall of the lining 3 is a curved surface, the gap between the track 4 and the inner wall of the lining 3 changes, and the grinding head needs to be adjusted continuously to always fit the inner wall of the lining 3. Specifically, the elastic force of a plurality of compression springs 12 can push the telescopic part 11 to slide along the fixed part 10, and then the telescopic part 11 is pressed against the lining 3 through the compression springs 12, so as to adapt to the curvature change of the surface of the lining 3, so that the grinding head always fits the surface of the lining 3.

[0042] In this embodiment, the telescopic portion 11 is provided with a suction chamber 13 in the shape of a bell mouth. Figure 7 As shown, the grinding head includes a plurality of grinding roller brushes 14. The plurality of grinding roller brushes 14 are arranged inside the suction chamber 13 and located at the opening. The suction chamber 13 is also provided with an air nozzle 15 connected to the air extraction device. The grinding head also includes two cleaning roller brushes 16. The two cleaning roller brushes 16 are arranged inside the suction chamber 13 and the plurality of grinding roller brushes 14 are located between the two cleaning roller brushes 16.

[0043] The grinding roller brush 14 of the grinding head grinds the lining 3, and then the dust generated by grinding is cleaned by the cleaning roller brush 16. At the same time, the dust is sucked away in time by the exhaust device, so that grinding and cleaning are carried out simultaneously, and dust is also avoided. The grinding roller brush 14 can be a grinding wheel. The cleaning roller brush 16 can be a round roller covered with fluff.

[0044] In this embodiment, the opening of the suction chamber 13 is provided with bristles 17 along its circumference. When the grinding roller brush 14 is close to the inner wall of the lining 3, in order to facilitate the movement of the grinding mechanism, a gap is left between the front end of the telescopic part 11 and the lining 3. This gap may cause dust generated during grinding to float. Therefore, the bristles 17 are provided to close this gap. The bristles 17 can not only brush the surface of the lining 3, but also prevent dust from escaping.

[0045] like Fig. 9 As shown, a pressure sensor 18 is provided inside the suction cup 2, so that the pressure sensor 18 is pressed tightly when the suction cup 2 is adsorbed on the lining 3. The tighter the suction cup 2 is adsorbed, the greater the pressure on the pressure sensor 18. The degree of adsorption of the suction cup 2 can be judged by the detection value of the pressure sensor 18, thereby preventing the fixing frame 1 from falling due to loose adsorption.

[0046] The present invention also provides a method for cleaning cracks in a lining 3, using the above-mentioned cleaning device for repairing cracks in a lining 3. The cleaning method is to move a fixing frame 1 so that it covers the cracks in the lining 3 and fix the fixing frame 1 to the surface of the lining 3 through a plurality of suction cups 2. Then, the grinding mechanism is moved to the grinding starting point and the grinding mechanism starts grinding. During the grinding process, the grinding mechanism is moved so that it moves along the crack and always covers the crack. After the grinding of the part covered by the fixing frame 1 is completed, the fixing frame 1 is moved to the next part to be polished and the above-mentioned operation is repeated.

Claims

1. A crack cleaning device for repairing lining cracks, characterized in that: It comprises a fixing frame and a grinding mechanism; the fixing frame is provided with a plurality of suction cups so that the fixing frame can be fixed on the lining surface; the fixing frame is provided with a track; the grinding mechanism is slidably arranged on the track.

2. The crack cleaning device for lining crack repair according to claim 1 is characterized in that: The grinding mechanism is provided with a moving mechanism; the moving mechanism comprises a rotating wheel and a power component connected to the rotating wheel by transmission; the rotating wheel is provided with an external thread; and the track is provided with a plurality of transmission teeth meshed with the external thread along its length direction.

3. The crack cleaning device for lining crack repair according to claim 2 is characterized in that: The track is arranged along the length direction of the fixing frame; the fixing clamp is also provided with a screw rod along its width direction; the end of the track is provided with a driving tooth engaged with the screw rod, so that the track moves along the width direction of the fixing frame when the screw rod rotates.

4. The crack cleaning device for lining crack repair according to claim 3 is characterized in that: The screw rods are arranged at both ends of the fixing frame; a driving rod which is transmission-connected to the two screw rods is also arranged inside the fixing frame, so that the two screw rods can be driven to rotate when the driving rod rotates.

5. The crack cleaning device for lining crack repair according to claim 4 is characterized in that: The grinding mechanism includes a fixed part and a telescopic part; the fixed part is slidably connected to the track; the telescopic part is slidably connected to the fixed part; a plurality of compression springs are arranged between the fixed part and the telescopic part; the moving mechanism is arranged at the fixed part and is transmission-connected to the track; the grinding head of the grinding mechanism is arranged at the telescopic part.

6. The crack cleaning device for lining crack repair according to claim 5 is characterized in that: The telescopic part is provided with a suction chamber in the shape of a trumpet; the grinding head includes a plurality of grinding roller brushes; the plurality of grinding roller brushes are arranged inside the suction chamber and located at the opening; the suction chamber is also provided with an air nozzle connected to an exhaust device.

7. The crack cleaning device for lining crack repair according to claim 6 is characterized in that: The grinding head also includes two cleaning roller brushes; the two cleaning roller brushes are arranged inside the suction chamber and a plurality of grinding roller brushes are located between the two cleaning roller brushes.

8. The crack cleaning device for lining crack repair according to claim 7 is characterized in that: The opening of the suction chamber is provided with bristles along its circumference.

9. The crack cleaning device for lining crack repair according to claim 8, characterized in that: A pressure sensor is arranged inside the suction cup, so that the pressure sensor is pressed when the suction cup is adsorbed on the lining.

10. A method for cleaning lining cracks, characterized in that: A crack cleaning device for repairing lining cracks is used as described in any one of claims 4 to 9; the crack cleaning method is to move a fixed frame to cover the cracks of the lining and fix the fixed frame to the lining surface by a plurality of suction cups; then move the grinding mechanism to the grinding starting point and start grinding; during the grinding process, move the grinding mechanism to move along the crack and always cover the crack; after grinding the part covered by the fixed frame, move the fixed frame to the next part to be polished for grinding.

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