Dam body crack grouting device and method for hydraulic engineering reinforcement

Abstract

The invention relates to the technical field of crack grouting, and discloses a dam body crack grouting device and method for hydraulic engineering reinforcement, the dam body crack grouting device comprises a rack, a driving device is fixedly mounted at the top end of the rack, and a contraction assembly is arranged at the right end of the driving device; and the driving device comprises a concrete placing box. An incomplete gear is arranged on the right side of a stirring shaft, and a rack and a lifting shaft can be driven to continuously move up and down through periodic meshing of the incomplete gear and a discharging pipe and compression of a pressing spring, so that the lifting shaft drives a telescopic shaft to continuously move left and right through hydraulic oil in a hydraulic pipe; and the telescopic shaft drives the telescopic pipe to continuously retract and extend from the right end of the discharging pipe, so that the drop point of concrete at the bottom end of the telescopic pipe in the crack is changed, the distribution of the concrete in the crack can be automatically expanded without moving the device, and the distribution range of the concrete in the crack can be simply expanded in a labor-saving manner.

Description

Technical Field

[0001] This invention relates to the field of crack grouting technology, and more specifically, to a dam crack grouting device and method for reinforcement in water conservancy projects. Background Technology

[0002] When reinforcing and upgrading dams such as reservoirs, grouting devices are typically used to fill and repair cracks in the dam body with cement. Existing grouting devices work by mixing concrete raw materials in a hopper and then injecting the mixed concrete into the cracks through a pipe. In practice, the outlet of the grouting device is usually aligned with the crack before injection. After entering the crack, the concrete forms a cone-shaped accumulation. To increase the filling range, the outlet is often moved within the crack by oscillating it, thus improving the distribution of concrete. However, this oscillation is usually achieved by pushing the grouting device back and forth or by replacing the outlet pipe with a flexible hose, making the operation complex and labor-intensive. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides a grouting device and method for dam body cracks in water conservancy engineering reinforcement, which has the advantage of simply and labor-savingly increasing the distribution range of concrete in the cracks.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a grouting device for dam cracks in water conservancy engineering reinforcement, comprising a frame, a drive device fixedly installed at the top of the frame, and a shrinkage component provided at the right end of the drive device;

[0005] The driving device includes a concrete placement box, which is fixedly installed on the frame. A stirring shaft is rotatably connected to the inner cavity of the concrete placement box. A discharge pipe is fixedly installed at the bottom of the concrete placement box. A spiral plate is rotatably connected to the inner cavity of the discharge pipe. A belt drive assembly is driven to the left end of the stirring shaft and the spiral plate. A motor is fixedly installed on the frame and is driven to the spiral plate.

[0006] The shrinkage assembly includes an incomplete gear, which is fixedly sleeved on the right end of the stirring shaft. A rack meshes with the surface of the incomplete gear. A telescopic tube is slidably connected to the right end of the inner cavity of the discharge pipe. A hydraulic pipe is fixedly installed on the right side of the concrete placement box. A telescopic shaft is slidably connected to the bottom end of the hydraulic pipe. The right end of the telescopic shaft is fixedly connected to the telescopic tube. A lifting shaft is slidably connected to the top end of the hydraulic pipe. A downward pressure spring is sleeved on the surface of the lifting shaft.

[0007] As a preferred embodiment of the present invention, the frame includes a mounting frame, casters, and handrails. The casters are fixedly installed at the four corners of the bottom of the mounting frame, and the handrails are fixedly installed on the left side of the top of the mounting frame. The concrete placement box, discharge pipe, and motor are all fixedly installed on the mounting frame.

[0008] As a preferred embodiment of the present invention, a slider is fixedly installed at the bottom end of the lifting shaft, a groove is opened in the inner cavity of the hydraulic pipe, the slider is slidably connected in the groove, the top end of the lifting shaft is fixedly connected to the rack, the rack is square-shaped, and the teeth on the rack are located on the front side of the incomplete gear.

[0009] As a preferred embodiment of the present invention, the inner cavity of the discharge pipe is provided with an adjustment component, the adjustment component includes a fixing ring, a fixing pipe is fixedly installed in the inner cavity of the discharge pipe, a movable shaft is movably connected to the inner cavity of the fixing pipe, a plug is fixedly installed on the right side of the movable shaft, and a return spring is fixedly installed between the left end of the movable shaft and the right end of the fixing pipe.

[0010] As a preferred embodiment of the present invention, a frustum-shaped through hole is provided in the middle of the fixing ring, the through hole being the same shape and size as the plug, the plug being located on the left side of the fixing ring, and the fixing tube being located on the right side of the spiral plate.

[0011] As a preferred embodiment of the present invention, a cleaning component is fixedly installed on the right end of the mounting frame. The cleaning component includes a water tank, which is fixed to the mounting frame. A hose is fixedly installed on the left side of the water tank. A push plate is slidably connected to the inner cavity of the water tank, and a screw is engaged in the middle of the push plate.

[0012] As a preferred embodiment of the present invention, a positioning block is fixedly installed at the rear end of the push plate, a positioning groove is provided in the inner cavity of the water tank, the positioning block is slidably connected in the positioning groove, a cover is provided at the top of the water tank, the cleaning component also includes a bevel gear, there are two bevel gears, one of which is fixedly installed at the bottom end of the screw, and the other is movably connected to the right end of the stirring shaft. A return spring is sleeved on the left side of the bevel gear located on the right side of the stirring shaft, and a connecting plate is movably connected to its surface. A locking block is fixedly installed at the right end of the stirring shaft, and a locking groove is provided on the surface of the bevel gear located at the right end of the stirring shaft, and the locking block is located in the locking groove.

[0013] As a preferred embodiment of the present invention, an inflation component one is fixedly installed at the top end of the fixed tube, and an inflation component two is fixedly installed at the right end of the concrete placement box. The inflation component two includes a fixed box two and a push block. The inflation component one includes a fixed box one. The top end of the fixed box one and the left end of the fixed box two are movably connected to a moving shaft two. A return spring two is sleeved on the surface of the moving shaft two. The fixed box one is connected to the fixed tube. The push block is fixed to the bottom end of the rack and the left end of the moving shaft two located on the left side of the fixed box two.

[0014] As a preferred embodiment of the present invention, a venting assembly is fixedly installed at the right end of the first fixed box and the bottom end of the second fixed box. A one-way air inlet is fixedly installed at the front end of the first fixed box and the front end of the second fixed box. The venting assembly includes a venting pipe. A movable shaft three is movably connected to the inner cavity of the venting pipe. A reset spring three is sleeved on the surface of the movable shaft three. A venting hole is opened on the surface of the venting pipe.

[0015] A grouting method for a dam body crack grouting device used for water conservancy engineering reinforcement includes the following steps:

[0016] Open the cap on top of the water tank, then add water to the tank, ensuring the water level is at least 5 centimeters below the hose, and then close the cap.

[0017] The device is transported to the crack in the dam body, and the axial direction of the telescopic pipe is aligned with the crack direction. Then, pre-mixed concrete is added to the concrete placement box, and the motor is started. The motor drives the spiral plate and mixing shaft to rotate synchronously via a belt drive assembly. As the mixing shaft rotates, it performs secondary mixing of the concrete in the placement box. After entering the discharge pipe, the concrete is transported to the right by the rotation of the spiral plate, filling the discharge pipe and telescopic pipe, and then discharged through the bottom of the telescopic pipe into the crack. The rotation of the mixing shaft also drives the incomplete gear to rotate. When the teeth of the incomplete gear mesh with the teeth of the rack, it can drive the rack to move upward, which in turn drives the lifting shaft to move upward in the hydraulic pipe, pulling the hydraulic oil in the hydraulic pipe to the left. This, in turn, drives the telescopic tube to move to the left and retract through the telescopic shaft. When the missing tooth part of the incomplete gear rotates to the front, the incomplete gear and the rack lose meshing. At this time, the compressed spring drives the lifting shaft and the rack to move downward, which in turn drives the telescopic tube to move to the right. This allows the telescopic tube to move left and right continuously at the crack while the mixing shaft rotates, thus filling the crack with concrete.

[0018] During the downward movement of the rack, it comes into contact with the second movable shaft on the first fixed box, which in turn presses the second movable shaft down, forcing the gas in the first fixed box into the fixed tube, increasing the pressure in the fixed tube. At this time, the air pressure pushes the first movable shaft to the right a certain distance. When the rack moves up, the second return spring, which is in a compressed state, returns the first fixed box to its original position under the action of elasticity. New gas is then supplied to the first fixed box through the one-way air inlet. As the rack moves up and down continuously, the gap between the plug and the fixed ring is continuously reduced as the amount of concrete in the concrete placement box decreases, thereby reducing the amount of concrete passing through the fixed ring per unit time. This reduces the amount of grout exiting the telescopic tube per unit time when the crack is about to be grouted, preventing excessive concrete from overflowing the crack.

[0019] Similarly, when the rack moves upward, the push block at the bottom of the rack will contact the push block on the left side of the fixed box two, thereby pushing the moving shaft two inside the fixed box two to the right. After the rack moves downward, the moving shaft two returns to its original position and air enters through the one-way air inlet. During this process, the gas inside the fixed box two continuously pushes the connecting plate to pull the bevel gear to the right. When the concrete in the concrete placement box is used up, the two bevel gears mesh. If grouting continues at this time, the two moving shafts three are pulled to move, so that the moving shafts three are misaligned with the air vent, and the gas in the fixed box one is discharged, so that the plug and push block are reset, and grouting continues. If grouting is completed, the moving shaft three located on the right side of the fixed box one is pulled alone to reset the plug and open the discharge pipe. At this time, the rotation of the mixing shaft will drive the screw to rotate through the bevel gear, causing the push plate to move upward, squeezing the water in the water tank into the hose. The hose can then be used to clean the areas inside the concrete placement box that need to be rinsed.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. This invention, by setting an incomplete gear on the right side of the stirring shaft, and through the periodic meshing of the incomplete gear with the discharge pipe and the compression of the downward spring, can drive the rack and lifting shaft to move up and down continuously. In turn, the lifting shaft drives the telescopic shaft to move left and right continuously through the hydraulic oil in the hydraulic pipe. In turn, the telescopic shaft drives the telescopic pipe to retract and extend from the right end of the discharge pipe, thereby changing the landing point of the concrete at the bottom of the telescopic pipe in the crack. This allows the device to automatically expand the distribution of concrete in the crack without moving, achieving a simple and labor-saving improvement in the distribution range of concrete in the crack.

[0022] 2. This invention, by setting an adjustment component and an inflation component one inside the discharge pipe, utilizes the continuous up-and-down movement of the rack to continuously press down the moving shaft two on the fixed box one, intermittently squeezing the gas inside the fixed box one into the fixed pipe. This causes the air pressure inside the fixed pipe to continuously increase as the concrete is discharged. When the concrete is almost completely discharged, the gap between the plug and the fixed ring reaches its minimum. At this time, the discharge volume of the telescopic pipe is controlled to decrease, avoiding a large discharge volume when the crack is almost filled, which would lead to concrete overflow and waste.

[0023] 3. This invention increases the pressure inside the fixed box by continuously moving the rack upwards, which in turn drives the bevel gear to move to the right through the connecting plate. When the concrete is used up and grouting is no longer required, the two bevel gears mesh with each other, thereby driving the screw to rotate and causing the push plate to move upwards in the inner cavity of the water tank, thereby squeezing the water in the water tank into the hose. By controlling the water outlet direction of the hose, the concrete placement box can be automatically flushed and cleaned. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a cross-sectional schematic diagram of the cleaning component of the present invention;

[0026] Figure 3 This is a cross-sectional schematic diagram of the structural driving device of the present invention;

[0027] Figure 4 For the present invention Figure 2 Enlarged view of point A in the middle;

[0028] Figure 5 This is a cross-sectional schematic diagram of the structural shrinkage component of the present invention;

[0029] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle;

[0030] Figure 7 For the present invention Figure 5 Enlarged view of point C in the middle;

[0031] Figure 8 For the present invention Figure 5 Enlarged diagram of point D in the middle.

[0032] In the diagram: 1. Frame; 11. Mounting frame; 12. Casters; 13. Handrail; 2. Drive unit; 21. Concrete placement box; 22. Mixing shaft; 23. Discharge pipe; 24. Spiral plate; 25. Belt drive assembly; 26. Motor; 3. Retraction assembly; 31. Incomplete gear; 32. Rack; 33. Hydraulic pipe; 34. Telescopic shaft; 35. Lifting shaft; 36. Compression spring; 37. Telescopic pipe; 4. Adjustment assembly; 41. Fixing ring; 42. Fixing pipe; 4 3. Moving shaft one; 44. Return spring one; 45. Plug; 5. Inflation assembly one; 51. Fixing box one; 52. Moving shaft two; 53. Return spring two; 6. Inflation assembly two; 61. Fixing box two; 62. Push block; 7. Deflating assembly; 71. Deflating pipe; 72. Moving shaft three; 73. Return spring three; 8. Cleaning assembly; 81. Water tank; 82. Return spring four; 83. Hose; 84. Push plate; 85. Screw; 86. Bevel gear; 87. Connecting plate. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1 to 8 As shown, the present invention provides a grouting device for dam body cracks in water conservancy engineering reinforcement, including a frame 1, a drive device 2 fixedly installed at the top of the frame 1, and a shrinkage component 3 provided at the right end of the drive device 2;

[0035] The drive unit 2 includes a concrete placement box 21, which is fixedly installed on the frame 1. A mixing shaft 22 is rotatably connected to the inner cavity of the concrete placement box 21. A discharge pipe 23 is fixedly installed at the bottom of the concrete placement box 21. A spiral plate 24 is rotatably connected to the inner cavity of the discharge pipe 23. A belt drive assembly 25 is driven to the left end of the mixing shaft 22 and the spiral plate 24. A motor 26 is fixedly installed on the frame 1 and is driven to the spiral plate 24.

[0036] The shrinking assembly 3 includes an incomplete gear 31, which is fixedly sleeved on the right end of the stirring shaft 22. A rack 32 meshes with the surface of the incomplete gear 31. A telescopic pipe 37 is slidably connected to the right end of the inner cavity of the discharge pipe 23. A hydraulic pipe 33 is fixedly installed on the right side of the concrete placement box 21. A telescopic shaft 34 is slidably connected to the bottom end of the hydraulic pipe 33. The right end of the telescopic shaft 34 is fixedly connected to the telescopic pipe 37. A lifting shaft 35 is slidably connected to the top end of the hydraulic pipe 33. A downward pressure spring 36 is sleeved on the surface of the lifting shaft 35.

[0037] By setting an incomplete gear 31 on the right side of the mixing shaft 22, the periodic meshing of the incomplete gear 31 with the discharge pipe 23 and the compression of the downward spring 36 can drive the rack 32 and the lifting shaft 35 to move up and down continuously. This allows the lifting shaft 35 to drive the telescopic shaft 34 to move left and right continuously through the hydraulic oil in the hydraulic pipe 33. In turn, the telescopic shaft 34 drives the telescopic pipe 37 to continuously retract and extend from the right end of the discharge pipe 23, thereby changing the landing point of the concrete at the bottom of the telescopic pipe 37 in the crack. This allows the device to automatically expand the distribution of concrete in the crack without moving, achieving a simple and labor-saving increase in the distribution range of concrete in the crack.

[0038] The frame 1 includes a mounting frame 11, casters 12 and handrails 13. The casters 12 are fixedly installed at the four corners of the bottom of the mounting frame 11, and the handrails 13 are fixedly installed on the left side of the top of the mounting frame 11. The concrete placement box 21, the discharge pipe 23 and the motor 26 are all fixedly installed on the mounting frame 11.

[0039] By providing casters 12, operators can easily transfer and move the device, and by providing handrails 13, operators can stand and move the device.

[0040] Among them, a slider is fixedly installed at the bottom end of the lifting shaft 35, and a groove is opened in the inner cavity of the hydraulic pipe 33. The slider is slidably connected in the groove. The top end of the lifting shaft 35 is fixedly connected to the rack 32. The rack 32 is square-shaped, and the teeth on the rack 32 are located on the front side of the incomplete gear 31.

[0041] By setting sliders and grooves, the lifting shaft 35 and hydraulic pipe 33 are positioned horizontally to prevent the lifting shaft 35 from rotating on the hydraulic pipe 33, thereby positioning the rack 32 and preventing the rack 32 from falling off.

[0042] The inner cavity of the discharge pipe 23 is provided with an adjustment component 4, which includes a fixing ring 41. A fixing pipe 42 is fixedly installed in the inner cavity of the discharge pipe 23. A moving shaft 43 is movably connected to the inner cavity of the fixing pipe 42. A plug 45 is fixedly installed on the right side of the moving shaft 43. A return spring 44 is fixedly installed between the left end of the moving shaft 43 and the right end of the fixing pipe 42. A frustum-shaped through hole is opened in the middle of the fixing ring 41. The through hole is the same shape and size as the plug 45. The plug 45 is located on the left side of the fixing ring 41, and the fixing pipe 42 is located on the right side of the spiral plate 24.

[0043] By setting a mutually compatible fixing ring 41 and plug 45, when the plug 45 is located to the left of the fixing ring 41 and the two are not in contact, the discharge volume of the discharge pipe 23 is at its maximum per unit time. When the plug 45 is fully inserted into the frustum groove in the fixing ring 41, the discharge pipe 23 is closed, and the discharge pipe 23 stops discharging. During this process, as the plug 45 moves to the right and gets closer to the discharge pipe 23, the gap value between the plug 45 and the fixing ring 41 can be changed, so that the amount of concrete discharged at the gap gradually decreases. After the fixed box 51 is vented, the return spring 44, which is in a compressed state, can drive the plug 45 to move to the left and reset, reopening the discharge pipe 23.

[0044] The right end of the mounting frame 11 is fixedly installed with a cleaning component 8, which includes a water tank 81. The water tank 81 is fixed to the mounting frame 11. A hose 83 is fixedly installed on the left side of the water tank 81. A push plate 84 is slidably connected to the inner cavity of the water tank 81. A screw 85 is engaged in the middle of the push plate 84.

[0045] The connecting plate 87 drives the bevel gear 86 to move continuously to the right. When the concrete is used up and grouting is no longer required, the two bevel gears 86 mesh with each other, thereby driving the screw 85 to rotate and causing the push plate 84 to move upward in the inner cavity of the water tank 81, thereby squeezing the water in the water tank 81 into the hose 83. By controlling the water outlet direction of the hose 83, the concrete placement box 21 can be automatically flushed and cleaned.

[0046] The push plate 84 has a positioning block fixedly installed at its rear end. The water tank 81 has a positioning groove in its inner cavity. The positioning block is slidably connected in the positioning groove. The top of the water tank 81 is also provided with a cover. The cleaning component 8 also includes a bevel gear 86. There are two bevel gears 86. One bevel gear 86 is fixedly installed at the bottom end of the screw 85. The other bevel gear 86 is movably connected to the right end of the stirring shaft 22. The left side of the bevel gear 86 located on the right side of the stirring shaft 22 is fitted with a return spring 82 and the surface is movably connected with a connecting plate 87. A locking block is fixedly installed at the right end of the stirring shaft 22. A locking groove is opened on the surface of the bevel gear 86 located at the right end of the stirring shaft 22. The locking block is located in the locking groove.

[0047] First, when adding water to the water tank 81, the liquid level must be lower than the hose 83. After the concrete in the concrete placement box 21 is used up, the two bevel gears 86 are already meshed. At this time, the push plate 84 has moved upward. By keeping the liquid level lower than the hose 83, it is possible to prevent the push plate 84 from directly sending water into the hose 83 during this process, which could cause water to spray out accidentally. Secondly, there is another way of using it. After observing that the discharge of the telescopic pipe 37 has decreased significantly, the vent pipe 71 at the bottom of the fixed box 2 61 can be pulled down to release the air from the fixed box 2 61, preventing the two bevel gears 86 from contacting each other. At this time, the push plate 84 will not move upward. Finally, the setting of the locking block can ensure that the bevel gears 86 can be smoothly rotated when the stirring shaft 22 rotates.

[0048] Among them, an inflation component 5 is fixedly installed at the top of the fixed pipe 42, and an inflation component 6 is fixedly installed at the right end of the concrete placement box 21. The inflation component 6 includes a fixed box 61 and a push block 62. The inflation component 5 includes a fixed box 51. The top of the fixed box 51 and the left end of the fixed box 61 are movably connected to a moving shaft 52. A return spring 53 is sleeved on the surface of the moving shaft 52. The fixed box 51 is connected to the fixed pipe 42. The push block 62 is fixed at the bottom end of the rack 32 and the left end of the moving shaft 52 located on the left side of the fixed box 61. A one-way air inlet is fixedly installed at the front end of the fixed box 51 and the front end of the fixed box 61.

[0049] The function of the fixed box 51 and the fixed box 61 is to intermittently inject gas into the fixed box 51 and the fixed box 61, so that the air pressure in the fixed box 51 and the fixed box 61 increases with the increase of concrete output, thereby driving the plug 45 and the bevel gear 86 to move. The one-way air inlet is provided to meet the gas replenishment.

[0050] Among them, the right end of the fixed box 51 and the bottom end of the fixed box 61 are both fixedly installed with a venting component 7. The venting component 7 includes a venting pipe 71. The inner cavity of the venting pipe 71 is movably connected to a moving shaft 72. A return spring 73 is sleeved on the surface of the moving shaft 72. A venting hole is opened on the surface of the venting pipe 71.

[0051] The deflation component 7 is used to deflate the inflation component 5 and the inflation component 6, as shown in the following figure. Figure 6 and Figure 7 The description is based on the venting component 7 at the bottom of the fixed box 2 61. When venting, the moving shaft 3 72 is pulled down so that the top of the moving shaft 3 72 is below the venting hole. At this time, the fixed box 2 61 is directly connected to the outside, and the high-pressure gas in the fixed box 2 61 is directly discharged. The return spring 4 82, which is in a compressed state, pulls the bevel gear 86 to the left to reset under the action of the elastic force.

[0052] A grouting method for a dam body crack grouting device used for water conservancy engineering reinforcement includes the following steps:

[0053] Open the cap at the top of the water tank 81, then add water to the water tank 81, ensuring that the water level is at least five centimeters below the hose 83, and then close the cap.

[0054] The device is transported to the crack in the dam body, and the axial direction of the telescopic pipe 37 is aligned with the crack direction. Then, mixed concrete is added to the concrete placement box 21, and the motor 26 is started. The motor 26 drives the spiral plate 24 and the mixing shaft 22 to rotate synchronously via the belt drive assembly 25. When the mixing shaft 22 rotates, it can perform secondary mixing of the concrete in the concrete placement box 21. After the concrete enters the discharge pipe 23, it is transported to the right by the rotation of the spiral plate 24, filling the discharge pipe 23 and the telescopic pipe 37, and then discharged through the bottom end of the telescopic pipe 37 into the crack. The rotation of the mixing shaft 22 also drives the incomplete gear 31 to rotate. When the teeth of the complete gear 31 mesh with the teeth of the rack 32, the rack 32 can be moved upward as a whole, which in turn moves the lifting shaft 35 upward in the hydraulic pipe 33, pulling the hydraulic oil in the hydraulic pipe 33 to the left. This, in turn, drives the telescopic tube 37 to move to the left and retract through the telescopic shaft 34. When the missing tooth part of the incomplete gear 31 rotates to the front, the incomplete gear 31 and the rack 32 lose meshing. At this time, the compression spring 36 drives the lifting shaft 35 and the rack 32 to move downward, which in turn drives the telescopic tube 37 to move to the right. This allows the telescopic tube 37 to move left and right continuously at the crack when the mixing shaft 22 rotates, thereby filling the crack with concrete.

[0055] During the downward movement of the rack 32, it will contact the moving shaft 52 on the fixed box 51, thereby pressing the moving shaft 52 down and forcing the gas in the fixed box 51 into the fixed tube 42, increasing the pressure in the fixed tube 42. At this time, the air pressure pushes the moving shaft 43 to the right a certain distance. When the rack 32 moves up, the return spring 53, which is in a compressed state, resets the fixed box 51 under the action of elastic force, and replenishes new gas into the fixed box 51 through the one-way air inlet. As the rack 32 moves up and down continuously, the distance between the plug 45 and the fixed ring 41 is continuously reduced as the concrete in the concrete placement box 21 decreases, thereby reducing the amount of concrete passing through the fixed ring 41 per unit time. This reduces the amount of grout exiting the telescopic tube 37 per unit time when the crack is about to be grouted, avoiding excessive concrete overflowing the crack.

[0056] Similarly, when rack 32 moves upward, push block 62 at the bottom of rack 32 will contact push block 62 on the left side of fixed box 2 61, thereby pushing moving shaft 2 52 inside fixed box 2 61 to the right. After rack 32 moves downward, moving shaft 2 52 returns to its original position and air enters through the one-way air inlet. During this process, the gas inside fixed box 2 61 continuously pushes connecting plate 87 to pull bevel gear 86 to the right. When the concrete in concrete placement box 21 is used up, the two bevel gears 86 mesh. If grouting work continues at this time, the two moving shafts 3 72 are pulled to move. The moving shaft 72 is misaligned with the vent hole, and the gas in the fixed box 51 is discharged, so that the plug 45 and the push block 62 are reset, and grouting continues. If the grouting is completed, the moving shaft 72 located on the right side of the fixed box 51 can be pulled alone to reset the plug 45 and open the discharge pipe 23. At this time, the rotation of the mixing shaft 22 will drive the screw 85 to rotate through the bevel gear 86, which will drive the push plate 84 to move upward, squeezing the water in the water tank 81 into the hose 83. The hose 83 can be used to clean the area in the concrete placement box 21 that needs to be flushed.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grouting device for dam cracks in water conservancy engineering reinforcement, comprising a frame (1), characterized in that: A drive device (2) is fixedly installed at the top of the frame (1), and a retraction component (3) is provided at the right end of the drive device (2). The driving device (2) includes a concrete placement box (21), which is fixedly installed on the frame (1). The inner cavity of the concrete placement box (21) is rotatably connected to a stirring shaft (22). The bottom end of the concrete placement box (21) is fixedly installed with a discharge pipe (23). The inner cavity of the discharge pipe (23) is rotatably connected to a spiral plate (24). The left end of the stirring shaft (22) and the spiral plate (24) is driven by a belt drive assembly (25). The frame (1) is fixedly installed with a motor (26), which is driven by the spiral plate (24). The shrinking assembly (3) includes an incomplete gear (31), which is fixedly sleeved on the right end of the stirring shaft (22). A rack (32) meshes with the surface of the incomplete gear (31). A telescopic pipe (37) is slidably connected to the right end of the inner cavity of the discharge pipe (23). A hydraulic pipe (33) is fixedly installed on the right side of the concrete placement box (21). A telescopic shaft (34) is slidably connected to the bottom end of the hydraulic pipe (33). The right end of the telescopic shaft (34) is fixedly connected to the telescopic pipe (37). A lifting shaft (35) is slidably connected to the top end of the hydraulic pipe (33). A downward pressure spring (36) is sleeved on the surface of the lifting shaft (35).

2. The grouting device for dam crack reinforcement in water conservancy projects according to claim 1, characterized in that: The frame (1) includes a mounting frame (11), casters (12) and a handrail (13). The casters (12) are fixedly installed at the four corners of the bottom of the mounting frame (11), and the handrail (13) is fixedly installed on the left side of the top of the mounting frame (11). The concrete placement box (21), the discharge pipe (23) and the motor (26) are all fixedly installed on the mounting frame (11).

3. The grouting device for dam crack reinforcement in water conservancy projects according to claim 1, characterized in that: A slider is fixedly installed at the bottom end of the lifting shaft (35). A groove is opened in the inner cavity of the hydraulic pipe (33). The slider is slidably connected in the groove. The top end of the lifting shaft (35) is fixedly connected to the rack (32). The rack (32) is square-shaped. The teeth on the rack (32) are located on the front side of the incomplete gear (31).

4. A grouting device for dam crack reinforcement in water conservancy projects according to claim 2, characterized in that: The inner cavity of the discharge pipe (23) is provided with an adjustment component (4), the adjustment component (4) includes a fixing ring (41), a fixing pipe (42) is fixedly installed in the inner cavity of the discharge pipe (23), a moving shaft (43) is movably connected to the inner cavity of the fixing pipe (42), a plug (45) is fixedly installed on the right side of the moving shaft (43), and a return spring (44) is fixedly installed between the left end of the moving shaft (43) and the right end of the fixing pipe (42).

5. A grouting device for dam crack reinforcement in water conservancy projects according to claim 4, characterized in that: The fixing ring (41) has a frustum-shaped through hole in the middle. The through hole is the same size and shape as the plug (45). The plug (45) is located on the left side of the fixing ring (41), and the fixing tube (42) is located on the right side of the spiral plate (24).

6. A grouting device for dam crack reinforcement in water conservancy projects according to claim 4, characterized in that: A cleaning component (8) is fixedly installed on the right end of the mounting frame (11). The cleaning component (8) includes a water tank (81). The water tank (81) is fixed to the mounting frame (11). A hose (83) is fixedly installed on the left side of the water tank (81). A push plate (84) is slidably connected to the inner cavity of the water tank (81). A screw (85) is engaged in the middle of the push plate (84).

7. A grouting device for dam crack reinforcement in water conservancy projects according to claim 6, characterized in that: A positioning block is fixedly installed at the rear end of the push plate (84). A positioning groove is opened in the inner cavity of the water tank (81). The positioning block is slidably connected in the positioning groove. A cover is also provided at the top of the water tank (81). The cleaning component (8) also includes a bevel gear (86). There are two bevel gears (86). One bevel gear (86) is fixedly installed at the bottom end of the screw (85). The other bevel gear (86) is movably connected to the right end of the stirring shaft (22). A return spring four (82) is sleeved on the left side of the bevel gear (86) located on the right side of the stirring shaft (22), and a connecting plate (87) is movably connected to its surface. A locking block is fixedly installed at the right end of the stirring shaft (22). A locking groove is opened on the surface of the bevel gear (86) located at the right end of the stirring shaft (22), and the locking block is located in the locking groove.

8. A grouting device for dam crack reinforcement in water conservancy projects according to claim 7, characterized in that: An inflation component 1 (5) is fixedly installed at the top of the fixed tube (42), and an inflation component 2 (6) is fixedly installed at the right end of the concrete placement box (21). The inflation component 2 (6) includes a fixed box 2 (61) and a push block (62). The inflation component 1 (5) includes a fixed box 1 (51). The top of the fixed box 1 (51) and the left end of the fixed box 2 (61) are movably connected to a moving shaft 2 (52). A reset spring 2 (53) is sleeved on the surface of the moving shaft 2 (52). The fixed box 1 (51) is connected to the fixed tube (42). The push block (62) is fixed to the bottom end of the rack (32) and the left end of the moving shaft 2 (52) located on the left side of the fixed box 2 (61).

9. A grouting device for dam crack reinforcement in water conservancy projects according to claim 8, characterized in that: A venting assembly (7) is fixedly installed at the right end of the first fixed box (51) and the bottom end of the second fixed box (61). A one-way air inlet is fixedly installed at the front end of the first fixed box (51) and the front end of the second fixed box (61). The venting assembly (7) includes a venting pipe (71). A movable shaft three (72) is movably connected to the inner cavity of the venting pipe (71). A reset spring three (73) is sleeved on the surface of the movable shaft three (72). A venting hole is opened on the surface of the venting pipe (71).

10. A grouting method for a dam body crack grouting device for water conservancy engineering reinforcement according to any one of claims 1-9, characterized in that, Includes the following steps: Open the cap on the top of the water tank (81), then add water to the water tank (81) and ensure that the water level is at least five centimeters below the hose (83), then close the cap; The device is transported to the crack in the dam body, and the axial direction of the telescopic pipe (37) is aligned with the direction of the crack. Then, the mixed concrete is added into the concrete placement box (21), and the motor (26) is started. The motor (26) drives the spiral plate (24) and the mixing shaft (22) to rotate synchronously through the belt drive assembly (25). When the mixing shaft (22) rotates, it can perform secondary mixing of the concrete in the concrete placement box (21). After the concrete enters the discharge pipe (23), it is transported to the right by the rotation of the spiral plate (24), filling the discharge pipe (23) and the telescopic pipe (37), and is discharged into the crack through the bottom end of the telescopic pipe (37). When the mixing shaft (22) rotates, it also drives the incomplete gear (31) to rotate. When the teeth of the full gear (31) mesh with the teeth of the rack (32), the rack (32) can be driven to move upward as a whole, thereby driving the lifting shaft (35) to move upward in the hydraulic pipe (33), pulling the hydraulic oil in the hydraulic pipe (33) to the left, and then driving the telescopic tube (37) to move to the left and contract through the telescopic shaft (34). When the missing tooth part of the incomplete gear (31) rotates to the front, the incomplete gear (31) and the rack (32) lose meshing. At this time, the compression spring (36) in the compressed state drives the lifting shaft (35) and the rack (32) to move downward, thereby driving the telescopic tube (37) to move to the right, thereby realizing that when the mixing shaft (22) rotates, the telescopic tube (37) moves left and right continuously at the crack, thereby filling the crack with concrete. During the downward movement of the rack (32), it will contact the moving shaft (52) on the fixed box (51), thereby pressing the moving shaft (52) down and forcing the gas in the fixed box (51) into the fixed tube (42), increasing the pressure in the fixed tube (42). At this time, the air pressure pushes the moving shaft (43) to the right a certain distance. When the rack (32) moves up, the return spring (53) in the compressed state will reset the fixed box (51) under the action of the elastic force, and replenish the fixed box (51) with new gas through the one-way air inlet. As the rack (32) moves up and down continuously, the gap between the plug (45) and the fixed ring (41) will be continuously reduced as the concrete in the concrete placement box (21) decreases, thereby reducing the amount of concrete passing through the fixed ring (41) per unit time. When the crack is about to be grouted, the amount of grout discharged from the telescopic tube (37) per unit time will be reduced, avoiding the occurrence of too much concrete overflowing the crack. Similarly, when the rack (32) moves upward, the push block (62) at the bottom of the rack (32) will contact the push block (62) on the left side of the fixed box (61), thereby pushing the moving shaft (52) inside the fixed box (61) to the right. After the rack (32) moves downward, the moving shaft (52) returns to its original position and air enters through the one-way air inlet. During this process, the gas inside the fixed box (61) continuously pushes the connecting plate (87) to pull the bevel gear (86) to the right. When the concrete in the concrete placement box (21) is used up, the two bevel gears (86) mesh. If grouting work continues at this time, the two moving shafts (72) will be pulled to move, making The movable shaft three (72) is offset from the vent hole, and the gas in the fixed box one (51) and the fixed box one (51) is discharged, so that the plug (45) and the push block (62) are reset and the grouting continues. If the grouting is completed, the movable shaft three (72) located on the right side of the fixed box one (51) can be pulled separately to reset the plug (45) and open the discharge pipe (23). At this time, the rotation of the stirring shaft (22) will drive the screw (85) to rotate through the bevel gear (86), which will drive the push plate (84) to move up and squeeze the water in the water tank (81) into the hose (83). The hose (83) can be aligned with the position in the concrete placement box (21) that needs to be flushed for cleaning.

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