A construction device and method for plugging tension bolt holes for fixing templates of water conservancy projects

Abstract

The present invention relates to the field of building construction, and in particular to a construction device and method for plugging tension bolt holes for a fixed formwork of a water conservancy project. The construction device for plugging tension bolt holes for a fixed formwork of a water conservancy project comprises an injection cylinder, a movable plug is arranged at the front end of the injection cylinder, a pushing mechanism is arranged at the rear end of the injection cylinder, the movable plug has an injection channel, the pushing mechanism comprises an extrusion rod and a propulsion assembly, one end of the extrusion rod extends toward the movable plug, and the other end extends outward through the injection cylinder, a push handle is arranged at the end of the extrusion rod extending outward, the present invention ensures precise alignment of the injection channel and the bolt hole by inserting the movable plug into the bolt hole, prevents overflow of cement slurry during the injection process, improves the accuracy and sealing of the plugging, and with the action of the extrusion rod, the cement slurry injected into the bolt hole is compacted, thereby improving the compactness of the plugging.

Description

Technical Field

[0001] The invention relates to the field of building construction, in particular to a construction device for plugging tension bolt holes for a fixed template of a water conservancy project, and also to a construction method for plugging tension bolt holes for a fixed template of a water conservancy project. Background Art

[0002] The fixed formwork in the construction of water conservancy projects is a formwork used to control the predetermined size, shape, and position of the newly poured concrete. The fixed formwork usually needs to be connected and fixed with tension bolts. After the concrete is poured and formed, the fixed formwork needs to be removed. After removal, holes for the tension bolts will be left on the formed concrete. The construction workers need to seal the holes for the tension bolts to ensure that the formed concrete will not be affected.

[0003] At present, the existing equipment usually has the following deficiencies when performing plugging construction on the tension bolt holes: 1. The existing equipment usually uses a manual method to fill cement into the tension bolt holes for multiple times, which increases the operation steps of the construction personnel and reduces the plugging rate of the tension bolt holes; 2. The existing equipment cannot reciprocate the filled cement, and the air in the tension bolt holes cannot be completely eliminated. Cavity is prone to occur after cement plugging, which reduces the filling effect of the cement.

[0004] The currently disclosed Chinese patent CN113914256B is a construction device and method for plugging the tension bolt holes for the fixed formwork of a water conservancy project, including a close-fitting plate, a pushing device and a smoothing device. A circular through hole is opened in the middle of the close-fitting plate, and a slide groove is opened symmetrically on the wall of the circular through hole. A pushing device is installed on the right end of the close-fitting plate, and a smoothing device is installed on the lower end of the close-fitting plate; the pushing device includes a cylindrical barrel, a clamping block, a positioning mechanism, a connecting rope, a traction arc plate, a pushing mechanism, an indicator rod and an electric push rod. A cylindrical barrel is installed on the right end of the close-fitting plate, and the inner wall of the cylindrical barrel is close to the close-fitting plate. A rectangular groove is provided, and a clamping block is installed on the wall of the rectangular groove away from the close-fitting plate. The clamping block is L-shaped. A positioning mechanism is slidably connected inside the rectangular groove. The positioning mechanism is clamped and matched with the clamping block. One end of a connecting rope is fixedly connected to the positioning mechanism, and the other end of the connecting rope slides through the cylindrical tube. A traction arc plate is commonly installed at the other ends of the two connecting ropes. The traction arc plate slides through the cylindrical tube. A pushing mechanism slides through the middle of the right end of the cylindrical tube. An indicator rod is installed on the upper end of the pushing mechanism through the square plate. An electric push rod is installed on the lower end of the cylindrical tube, and the right end of the electric push rod is fixedly connected to the pushing mechanism.

[0005] According to the above patent, the above patent manually presses two positioning mechanisms so that the two positioning mechanisms extend from the cylindrical tube, and then manually pours the cement required for plugging into the cylindrical tube, and then moves the cylindrical tube to the tension bolt hole so that the close-fitting plate and the wall at the tension bolt hole are close. The adopted pushing device can realize the function of quickly injecting cement into the tension bolt hole. However, in the process of filling the bolt hole, under the pushing pressure, the cement is easy to overflow from the joint between the close-fitting plate and the wall, resulting in unstable pushing action, which leads to incomplete plugging of the bolt hole. Cement overflow means that part of the cement fails to be effectively filled into the bolt hole, which may cause residual gaps or bubbles in the hole, which will directly affect the compactness of the plugging. Therefore, there is a need for a plugging construction equipment that can effectively prevent cement from overflowing during the pushing process and ensure the compactness of the bolt hole plugging. Summary of the invention

[0006] In view of the problems existing in the prior art, a construction device for plugging tension bolt holes for a fixed formwork of a water conservancy project is provided. The present invention ensures the precise alignment of an injection channel and the bolt hole by inserting a movable plug body into the bolt hole, prevents overflow of cement slurry during the injection process, and improves the accuracy and sealing of the plugging. With the movement of the extrusion rod, the cement slurry injected into the bolt hole is compacted, thereby improving the density of the plugging.

[0007] In order to solve the problems of the prior art, the present invention provides a construction device for plugging the tension bolt holes for fixing templates of water conservancy projects, comprising an injection cylinder, the injection cylinder having a feed port for injecting cement therein, and a grip for facilitating users to hold the injection cylinder, a movable plug body for matching with the bolt hole is provided at the front end of the injection cylinder, a pushing mechanism for pushing cement is provided at the rear end of the injection cylinder, the movable plug body has an injection channel passing through along the axial direction of the injection cylinder, the pushing mechanism comprises an extrusion mechanism coaxial with the injection cylinder and capable of entering the injection channel The invention relates to a rod and a pushing assembly for accelerating the flow of cement in the injection cylinder toward the movable plug body, wherein one end of the extrusion rod extends toward the movable plug body, and the other end extends outward through the injection cylinder body, and the end portion of the extrusion rod extending outward is provided with a push handle for facilitating the user to perform reciprocating pushing actions. When the user pushes the extrusion rod until the push handle contacts the end portion of the injection cylinder body, the end face of the extrusion rod entering the injection channel is flush with the end face of the movable plug body inserted into the bolt hole, and when the user pushes the extrusion rod until obvious resistance is felt, the cement in the bolt hole is in a compacted state.

[0008] Preferably, the movable plug can move along the axial direction of the injection cylinder, and the injection cylinder is provided with a positioning piece capable of fixing the movable plug. When the movable plug is inserted into the bolt hole and fixed by the positioning piece, the movable plug is in a fixed state of remaining extended out of the injection cylinder, so that cement can be accurately introduced into the bolt hole. When the user pushes the movable plug into the injection cylinder and it is fixed by the positioning piece, the movable plug is in a fixed state of remaining extended into the injection cylinder, so that cement can fill the remaining unsealed area of ​​the bolt hole.

[0009] Preferably, the front end of the injection cylinder is also provided with a resistance component for maintaining a close contact with the wall surface, the resistance component includes a rubber gasket mounted on the movable plug body and fixedly connected to the injection cylinder body, and a rubber suction cup mounted on the rubber gasket and fixedly connected to the injection cylinder body. During the cement sealing process after the movable plug body is pushed into the injection cylinder body, the rubber gasket and the wall are in a sealed state to prevent cement from overflowing, and at the same time, the rubber suction cup and the wall are in an attached state to maintain a stable cement sealing process.

[0010] Preferably, the movable plug body is composed of a guide tube and a rubber ring sleeve fixedly mounted thereon, the internal pipeline of the guide tube is the injection channel, a sealing sleeve is fixedly provided in the injection cylinder body and close to its front end, and the guide tube is slidably arranged in the sealing sleeve.

[0011] Preferably, a lever is provided on the guide tube and extends vertically outward through the sealing sleeve and the injection cylinder body in sequence. The sealing sleeve and the injection cylinder body are provided with guide grooves for the movement of the lever along their own axial directions. When the positioning member fixes the guide tube, the lever is in a position where it contacts one end of the guide groove or the other end of the guide groove.

[0012] Preferably, the lever is provided with a pressure relief port along its own axial direction and communicated with the flow guide pipe.

[0013] Preferably, the positioning member is specifically a ring structure sleeved on the injection cylinder body, and the positioning member is provided with a notch along its own axial direction for the passage of the lever, and the injection cylinder body is fixed with a pair of limit parts for restricting the positioning member therein. When the user rotates the positioning member so that the notch thereon is offset from the moving path of the lever, the lever is in a fixed state of being pressed by the positioning member in the guide groove, so that the guide tube is in a fixed state together.

[0014] Preferably, the injection channel is a channel structure that narrows from the inside of the injection barrel to the outside along its own axial direction, and the end edge of the extrusion rod that can enter the injection channel is chamfered.

[0015] Preferably, the propulsion assembly is arranged in the injection cylinder body and is located opposite to the feed port. The propulsion assembly includes a sleeve mounted on the extrusion rod and a rotary driver for driving the sleeve to rotate. A bearing is connected between the sleeve and the injection cylinder body, and a spiral blade is provided on the outer surface of the sleeve.

[0016] The present invention also provides a construction method for plugging tension bolt holes for fixing a template of a water conservancy project, comprising the following steps:

[0017] S1. Insert the movable plug into the bolt hole, and then the abutment assembly supports the wall surface. Then, the propulsion assembly is started to transport the cement slurry toward the movable plug.

[0018] S2, operate the squeezing rod to introduce cement slurry into the bolt hole through the injection channel until the user feels that the squeezing action of the squeezing rod is obviously affected, which indicates that the area between the bolt hole and the movable plug body is filled with cement slurry;

[0019] S3. Operate the movable plug to push it into the injection barrel and fix it through the positioning piece. At this time, the unfilled area of ​​the bolt hole is exposed, and continue to operate the extrusion rod to reciprocate and push the cement slurry until the user feels that the extrusion action of the extrusion rod is subject to obvious resistance. At this time, it indicates that the remaining unfilled area of ​​the bolt hole is filled with cement slurry.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention inserts the movable plug into the bolt hole before the plugging operation, which not only ensures the precise alignment of the injection channel and the bolt hole, but also prevents the cement slurry from overflowing during the injection process, improves the accuracy and sealing of the plugging, and plays a guiding effect on the injection process of the cement slurry. When the user pushes the push handle, the extrusion rod moves along the axial direction of the injection cylinder, and then pushes the cement slurry from the injection cylinder through the injection channel into the bolt hole, effectively promoting the flow of cement slurry while preventing the injection channel from being blocked, ensuring that the cement slurry smoothly enters the bolt hole. With the movement of the extrusion rod, the cement slurry injected into the bolt hole is compacted, thereby improving the compactness of the plugging;

[0022] 2. The present invention ensures that the injection cylinder is accurately aligned with the bolt hole by fixing the movable plug body by the positioning member before the plug body is inserted into the bolt hole, thereby aligning the injection channel with the bolt hole, improving the accuracy of cement slurry injection. As the cement slurry is gradually injected, the sealing state between the movable plug body and the bolt hole effectively prevents the cement slurry from overflowing during the injection process, thereby enhancing the sealing performance of the plugging. The movable plug body is fixed twice by the positioning member, thereby realizing the staged operation of the cement slurry injection process, first ensuring that the cement slurry enters the bolt hole smoothly, and then filling the remaining unblocked area of ​​the bolt hole, thereby ensuring that the entire bolt hole is evenly and fully filled.

[0023] 3. The present invention effectively prevents the overflow of cement slurry during the plugging process through the close fit between the rubber gasket and the wall, thereby improving the sealing performance of the plugging. The rubber suction cup is attached to the wall surface, making the injection barrel more stable during the plugging process, avoiding the uneven plugging or leakage caused by the movement of the injection barrel, ensuring that the injection channel is aligned with the bolt hole, and relying on the effects of the rubber gasket and the rubber suction cup, achieving dual guarantees of sealing performance and stability, ensuring that the cement slurry can evenly and fully fill the bolt hole, and significantly improving the plugging effect and quality;

[0024] 4. The present invention uses a propulsion assembly to first propel the cement slurry from the feed port toward the injection channel, and then uses the pushing action of the extrusion rod to achieve rapid and continuous feeding, and allows the cement slurry to quickly enter the bolt hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the rear end direction of the injection cylinder of a construction equipment for plugging the tension bolt holes for fixing templates of a water conservancy project;

[0026] Figure 2 It is a three-dimensional structural schematic diagram of the front end direction of the injection cylinder of a construction equipment for plugging the tension bolt holes for fixing templates of a water conservancy project;

[0027] Figure 3 It is a partial three-dimensional structural cross-sectional view of a construction device for plugging the tension bolt holes for fixing the template of a water conservancy project;

[0028] Figure 4 It is a three-dimensional structural cross-sectional view of an extrusion rod and a movable plug body of a construction device for plugging the tension bolt holes of a fixed template of a water conservancy project;

[0029] Figure 5 It is a three-dimensional structural cross-sectional view of an extrusion rod and a propulsion assembly of a construction device for plugging the tension bolt holes of a fixed template of a water conservancy project;

[0030] Figure 6 It is a schematic diagram of a state in which a movable plug body of a construction device for plugging a tension bolt hole for a fixed template of a hydraulic project is inserted into a bolt hole and an extrusion rod is extended into an injection channel;

[0031] Figure 7 It is a schematic diagram of a state in which a movable plug body of a construction device for plugging a tension bolt hole for a fixed template of a hydraulic project is inserted into a bolt hole and an extrusion rod does not extend into an injection channel;

[0032] Figure 8 It is a schematic diagram of a state in which a movable plug body of a construction device for plugging the tension bolt holes of a fixed template of a water conservancy project is not inserted into the bolt hole;

[0033] Fig. 9 yes Figure 6 A magnified schematic diagram of point A;

[0034] Fig.10 yes Figure 6 An enlarged schematic diagram of point B.

[0035] The numbers in the figure are: 1. injection cylinder; 11. feed port; 12. handle; 2. wall; 21. bolt hole; 3. movable plug; 31. injection channel; 32. guide tube; 321. sealing sleeve; 3211. guide groove; 322. lever; 3221. pressure relief port; 3222. push-pull ring; 33. rubber ring sleeve; 4. pushing mechanism; 41. extrusion rod; 411. push handle; 412. piston; 42. propulsion assembly; 421. bushing; 4211. bearing; 4212. spiral blade; 422. rotary drive; 5. positioning member; 51. limiter; 6. resistance assembly; 61. rubber gasket; 62. rubber suction cup. DETAILED DESCRIPTION

[0036] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] See also Figure 1-Figure 8 As shown, a construction device for plugging the tension bolt holes for fixing the template of a water conservancy project comprises an injection cylinder 1, the injection cylinder 1 has a feed port 11 for injecting cement therein, and a grip 12 for facilitating the user to hold the injection cylinder 1, the front end of the injection cylinder 1 is provided with a movable plug 3 for matching with the bolt hole 21, the rear end of the injection cylinder 1 is provided with a pushing mechanism 4 for pushing cement, the movable plug 3 has an injection channel 31 passing through along the axial direction of the injection cylinder 1, the pushing mechanism 4 comprises an extrusion rod 41 coaxial with the injection cylinder 1 and capable of entering the injection channel 31, and a rod 41 for accelerating the cement injection. A propulsion assembly 42 flows in the injection cylinder 1 toward the movable plug body 3, one end of the extrusion rod 41 extends toward the movable plug body 3, and the other end extends outward through the injection cylinder 1, and the end of the extrusion rod 41 extending outward is provided with a push handle 411 for facilitating the user to perform reciprocating pushing actions. When the user pushes the extrusion rod 41 until the push handle 411 contacts the end of the injection cylinder 1, the end face of the extrusion rod 41 entering the injection channel 31 is flush with the end face of the movable plug body 3 inserted into the bolt hole 21, and when the user pushes the extrusion rod 41 until obvious resistance is felt, the cement in the bolt hole 21 is in a compacted state.

[0038] Before starting to block the bolt hole 21, use a brush or compressed air to remove dust, debris and other impurities in the bolt hole 21 to ensure that the hole is clean. Then the user holds the handle 12 of the injection cylinder 1 and aligns the movable plug 3 at the front end of the injection cylinder 1 with the bolt hole 21, ensuring that the movable plug 3 is completely aligned with the bolt hole 21 to avoid deviation. The movable plug 3 is inserted into the bolt hole 21 until the front end of the injection cylinder 1 contacts the surface of the wall 2, which not only plays a positioning effect, but also prevents the subsequent cement slurry from overflowing during the injection process. At this time, the injection channel 31 of the movable plug 3 is connected to the bolt hole 21. When the preparation work is completed, cement slurry is then poured into the injection cylinder 1 through the feed port 11, and the propulsion assembly 42 is started, and the cement slurry is pushed toward the direction of the movable plug 3 through the propulsion assembly 42. Then the user pushes the extrusion rod 41 through the push handle 411 to move it along the axial direction of the injection cylinder 1. One end of the extrusion rod 41 enters the injection channel 31 to push the cement slurry from the injection cylinder 1 to the inside of the bolt hole 21. The user continues to push the extrusion rod 41 to prevent the injection channel 31 from being blocked, while allowing the cement slurry to gradually fill the bolt hole 21. During the advancement process, the end face of the extrusion rod 41 remains flush with the end face of the movable plug body 3 inserted into the bolt hole 21, until the user feels resistance when pushing the extrusion rod 41, indicating that the cement slurry in the bolt hole 21 is fully filled and in a compacted state. At this time, continue to apply a certain amount of pressure to ensure that the cement slurry is fully compacted in the bolt hole 21. Once the cement slurry is compacted, the user slowly pulls out the movable plug body 3, and finally cleans the cement slurry remaining inside the injection barrel 1 in time to prevent the cement from being difficult to clean after hardening.

[0039] See also Figure 3-Figure 8 As shown, the movable plug 3 can move along the axial direction of the injection cylinder 1, and the injection cylinder 1 is provided with a positioning piece 5 which can fix the movable plug 3. When the movable plug 3 is inserted into the bolt hole 21 and fixed by the positioning piece 5, the movable plug 3 is in a fixed state of being extended out of the injection cylinder 1, so that the cement can be accurately introduced into the bolt hole 21. When the user pushes the movable plug 3 into the injection cylinder 1 and is fixed by the positioning piece 5, the movable plug 3 is in a fixed state of being extended into the injection cylinder 1, so that the cement can fill the remaining unsealed area of ​​the bolt hole 21.

[0040] Before the movable plug 3 is inserted into the bolt hole 21, the movable plug 3 is fixed by the positioning member 5 at a position extending out of the injection cylinder 1, and maintains a fixed state extending out of the injection cylinder 1. At this time, the movable plug 3 is inserted into the bolt hole 21, and the user operates the squeezing rod 41 to accurately introduce the cement slurry into the bolt hole 21 through the injection channel 31, ensuring that the cement slurry can smoothly enter the inside of the bolt hole 21, avoiding overflow and leakage problems. Until the user clearly feels the pushing resistance of the squeezing rod 41, the user pushes the movable plug 3 into the injection cylinder 1 and fixes it again by the positioning member 5, and the movable plug 3 is in a fixed state of being extended into the injection cylinder 1. In this state, as the user continues to operate the squeezing rod 41, the cement slurry can fill the remaining unblocked area of ​​the bolt hole 21, ensuring that the entire bolt hole 21 is fully filled.

[0041] See also Figure 3-Figure 8 and Fig.10 As shown, the front end of the injection cylinder 1 is also provided with a resistance component 6 for maintaining a close contact with the surface of the wall 2, and the resistance component 6 includes a rubber gasket 61 which is sleeved on the movable plug body 3 and fixedly connected to the injection cylinder 1, and a rubber suction cup 62 which is sleeved on the rubber gasket 61 and fixedly connected to the injection cylinder 1. When the movable plug body 3 is pushed into the injection cylinder 1 during the cement sealing process, the rubber gasket 61 and the wall 2 are in a sealed state to prevent cement from overflowing, and at the same time, the rubber suction cup 62 and the wall 2 are in an attached state to maintain a stable cement sealing process.

[0042] After the movable plug 3 is inserted into the bolt hole 21, the rubber gasket 61 at the front end of the injection cylinder 1 presses against the wall 2 to ensure that it fits tightly against the surface of the wall 2. At the same time, the rubber suction cup 62 also remains in contact with the surface of the wall 2, which supports the injection cylinder 1 against the wall 2. After the movable plug 3 is pulled out of the bolt hole 21, the stability of the injection cylinder 1 can also be ensured, further enhancing the stability of the plugging process. When the user clearly feels the pushing resistance of the extrusion rod 41 when the movable plug 3 is inserted into the bolt hole 21, it indicates that the cement slurry has mostly filled the bolt hole 21. At this time, the user pushes the movable plug 3 into the injection cylinder 1 and fixes it again with the positioning member 5. Since the rubber gasket 61 at the front end of the injection cylinder 1 forms a sealed state with the wall 2, the overflow of cement is prevented during the subsequent plugging process. The user continues to operate the extrusion rod 41 to fill the remaining unblocked area of ​​the bolt hole 21 with cement slurry until the entire bolt hole 21 is fully filled.

[0043] See also Figure 3-Figure 9 As shown, the movable plug body 3 is composed of a guide tube 32 and a rubber ring sleeve 33 fixedly mounted thereon, the internal pipeline of the guide tube 32 is the injection channel 31, and a sealing sleeve 321 is fixedly provided in the injection cylinder 1 and near its front end, and the guide tube 32 is slidably set in the sealing sleeve 321.

[0044] When the user inserts the movable plug body 3 into the bolt hole 21, the rubber ring sleeve 33 is able to adapt to the diameter of the bolt hole 21 due to its deformability. As the user applies force to the injection barrel 1, the rubber ring sleeve 33 is inserted into the bolt hole 21. At this time, the rubber ring sleeve 33 and the bolt hole 21 are in a sealed state to prevent the cement slurry from overflowing. As the cement slurry is injected, due to the close fit between the sealing sleeve 321 and the guide tube 32, a good seal is ensured between the guide tube 32 and the sealing sleeve 321, preventing the cement slurry from leaking from the gap between the guide tube 32 and the sealing sleeve 321. The internal pipeline of the guide tube 32 serves as the only cement slurry channel, namely the injection channel 31, ensuring that the cement slurry can only enter the bolt hole 21 through the injection channel 31 without leakage.

[0045] See also Figure 3-Figure 8 As shown, the guide tube 32 is provided with a lever 322 which passes through the sealing sleeve 321 and the injection cylinder body 1 in sequence and extends vertically outward. The sealing sleeve 321 and the injection cylinder body 1 are both provided with a guide groove 3211 along their own axial direction for the lever 322 to move. When the positioning member 5 fixes the guide tube 32, the lever 322 is in a position where it contacts one end of the guide groove 3211 or the other end of the guide groove 3211.

[0046] When the position of the movable plug body 3 needs to be adjusted, the user can operate the lever 322 to move in the guide groove 3211, thereby driving the guide tube 32 to slide in the sealing sleeve 321. When the position of the guide tube 32 needs to be fixed, the guide tube 32 is fixed using the positioning member 5. After the positioning member 5 fixes the guide tube 32, the lever 322 will be in a position in contact with one end of the guide groove 3211 or the other end, ensuring that the position of the guide tube 32 is accurately fixed. When the user uses the positioning member 5 to fix the guide tube 32, the positioning member 5 acts on the lever 322, so that the lever 322 is pressed against the end of the guide groove 3211, thereby fixing the lever 322 and indirectly fixing the guide tube 32.

[0047] See also Figure 6-Figure 8 As shown, the lever 322 is provided with a pressure relief port 3221 along its own axial direction and communicated with the flow guide pipe 32 .

[0048] During the cement slurry injection process, if the pressure in the flow guide pipe 32 exceeds a certain threshold, the excess pressure can be released through the pressure relief port 3221. The existence of the pressure relief port 3221 allows the pressure inside and outside of the flow guide pipe 32 to be balanced, and the air generated during the process of filling the bolt hole 21 with cement can be discharged, ensuring that the bolt hole 21 is blocked without generating a cavity.

[0049] See also Figure 3-Figure 8As shown, the positioning member 5 is specifically a ring structure sleeved on the injection cylinder body 1, and the positioning member 5 is provided with a notch along its own axial direction for the lever 322 to pass through, and the injection cylinder body 1 is fixed with a pair of limiting parts 51 for limiting the positioning member 5 therein. When the user rotates the positioning member 5 so that the notch thereon is offset from the moving path of the lever 322, the lever 322 is in a fixed state of being pressed by the positioning member 5 in the guide groove 3211, so that the guide tube 32 is in a fixed state together.

[0050] A push-pull ring 3222 is fixedly provided on the lever 322 for the convenience of users to push and pull the guide tube 32. In the initial state, the notch of the positioning member 5 is aligned with the lever 322, and the lever 322 can move freely. As the user rotates the positioning member 5, the notch on the positioning member 5 is offset from the moving path of the lever 322. When the notch is offset from the lever 322, the edge of the positioning member 5 presses against the lever 322, and at this time, the lever 322 is in a fixed state pressed between the positioning member 5 and the end of the guide groove 3211. Since the lever 322 is fixed, the guide tube 32 is also fixed and cannot slide in the sealing sleeve 321. The stability of the guide tube 32 is ensured during the cement slurry filling process, thereby ensuring that the bolt hole 21 is completely blocked, and the movement of the guide tube 32 will not interfere with the cement slurry filling when the remaining area of ​​the bolt hole 21 is blocked.

[0051] See also Figure 3-Figure 9 As shown, the injection channel 31 is a channel structure that narrows from the inside of the injection barrel 1 to the outside along its own axial direction, and the end edge of the squeezing rod 41 that can enter the injection channel 31 is chamfered.

[0052] A piston 412 fixedly connected to the extrusion rod 41 is slidably provided in the injection cylinder 1, and the piston 412 is used to keep the extrusion rod 41 coaxial with the injection channel 31. When the user pushes the extrusion rod 41, the piston 412 moves in the injection cylinder 1. Since the piston 412 is fixedly connected to the extrusion rod 41, the piston 412 ensures that the extrusion rod 41 is always coaxial with the injection channel 31 to prevent deviation. The tapered end of the extrusion rod 41 gradually enters the injection channel 31, and as the extrusion rod 41 is pushed forward, the cement slurry is pushed into the narrowed injection channel 31. The chamfered end of the extrusion rod 41 allows the cement slurry to be smoothly pushed out of the injection channel 31 and into the bolt hole 21, ensuring that the extrusion rod 41 can accurately enter the injection channel 31 while reducing the possibility of blockage. The narrowing design of the injection channel 31 makes the flow rate of the cement slurry lower during the initial pushing, which helps to reduce the pressure of the instantaneous high pressure on the movable plug body 3, avoid damage caused by excessive pressure on the movable plug body 3, and enable the cement slurry to gradually fill the bolt hole 21 under a stable pressure, thereby improving the filling effect.

[0053] See also Figure 3-Figure 8As shown, the propulsion assembly 42 is arranged in the injection cylinder body 1 and is located opposite to the feed port 11. The propulsion assembly 42 includes a sleeve 421 sleeved on the extrusion rod 41, and a rotating driver 422 for driving the sleeve 421 to rotate. A bearing 4211 is connected between the sleeve 421 and the injection cylinder body 1, and a spiral blade 4212 is provided on the outer surface of the sleeve 421.

[0054] The rotary driver 422 is a pulley structure, which drives the sleeve 421 to rotate through a belt transmission. When the user starts the rotary driver 422, the rotary driver 422 drives the sleeve 421 to rotate through a belt transmission. Since the outer surface of the sleeve 421 is provided with a spiral blade 4212, the spiral blade 4212 pushes the cement slurry forward as the sleeve 421 rotates. The rotation of the spiral blade 4212 pushes the cement slurry from the feed port 11 toward the injection channel 31. The cement slurry is evenly pushed into the injection channel 31 under the action of the spiral blade 4212. Combined with the pushing action of the extrusion rod 41, the cement slurry quickly enters the bolt hole 21 until the entire bolt hole 21 is filled.

[0055] A construction method for plugging a tension bolt hole for a fixed formwork of a water conservancy project is applied to a construction device for plugging a tension bolt hole for a fixed formwork of a water conservancy project, comprising the following steps:

[0056] S1, insert the movable plug 3 into the bolt hole 21, at which time the abutment assembly 6 is supported on the surface of the wall 2, and then the propulsion assembly 42 is started to transport the cement slurry toward the movable plug 3;

[0057] S2, operate the squeezing rod 41 to introduce cement slurry into the bolt hole 21 through the injection channel 31, until the user feels that the squeezing action of the squeezing rod 41 encounters obvious resistance, which indicates that the area between the bolt hole 21 and the movable plug body 3 is filled with cement slurry;

[0058] S3. Operate the movable plug 3 to push it into the injection barrel 1 and fix it through the positioning piece 5. At this time, the unfilled area of ​​the bolt hole 21 is exposed, and continue to operate the squeezing rod 41 to reciprocate and push the cement slurry until the user feels that the squeezing action of the squeezing rod 41 is subject to obvious resistance, which indicates that the remaining unfilled area of ​​the bolt hole 21 is filled with cement slurry.

[0059] According to the present invention, the movable plug body 3 is fixed in the extended position by the positioning member 5 before being inserted into the bolt hole 21, and then the movable plug body 3 is inserted into the bolt hole 21, so as to ensure that the injection cylinder 1 is accurately aligned with the bolt hole 21, thereby improving the accuracy of injecting cement slurry. The sealing state between the movable plug body 3 and the bolt hole 21 effectively prevents the overflow of cement slurry during the injection process, and enhances the sealing performance of the plugging. With the action of the extrusion rod 41, the cement slurry injected into the bolt hole 21 is compacted, thereby improving the density of the plugging. The positioning member 5 fixes the movable plug body 3 twice, thereby realizing the staged operation of the cement slurry injection process, first ensuring that the cement slurry smoothly enters the bolt hole 21, and then filling the remaining unblocked area of ​​the bolt hole 21, thereby ensuring that the entire bolt hole 21 is evenly and fully filled.

[0060] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the protection scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A construction device for plugging tension bolt holes for fixing a template of a hydraulic engineering project, comprising an injection cylinder (1), the injection cylinder (1) having a feed port (11) for injecting cement therein, and a grip (12) for facilitating a user to hold the injection cylinder (1); It is characterized in that The front end of the injection cylinder (1) is provided with a movable plug (3) adapted to fit the bolt hole (21), the rear end of the injection cylinder (1) is provided with a pushing mechanism (4) for pushing cement, and the movable plug (3) has an injection channel (31) extending along the axial direction of the injection cylinder (1); The pushing mechanism (4) comprises an extrusion rod (41) coaxial with the injection cylinder (1) and capable of entering the injection channel (31), and a pushing assembly (42) for accelerating the flow of cement in the injection cylinder (1) toward the movable plug body (3). One end of the extrusion rod (41) extends toward the movable plug body (3), and the other end extends outward through the injection cylinder (1). The end of the extrusion rod (41) extending outward is provided with a push handle (411) for facilitating a user to perform a reciprocating pushing action. When the user pushes the extrusion rod (41) until the push handle (411) contacts the end of the injection cylinder (1), the end surface of the extrusion rod (41) entering the injection channel (31) is flush with the end surface of the movable plug body (3) inserted into the bolt hole (21). When the user pushes the extrusion rod (41) until obvious resistance is felt, the cement in the bolt hole (21) is in a compacted state. The movable plug (3) is movable along the axis of the injection cylinder (1), and a positioning piece (5) is provided on the injection cylinder (1) for fixing the movable plug (3). When the movable plug (3) is inserted into the bolt hole (21) and fixed by the positioning piece (5), the movable plug (3) is in a fixed state of being extended out of the injection cylinder (1), so that cement can be accurately introduced into the bolt hole (21); and when the user pushes the movable plug (3) into the injection cylinder (1) and is fixed by the positioning piece (5), the movable plug (3) is in a fixed state of being extended into the injection cylinder (1), so that cement can fill the remaining unblocked area of ​​the bolt hole (21); The front end of the injection cylinder (1) is also provided with a resistance component (6) for maintaining a close contact state with the surface of the wall (2), and the resistance component (6) comprises a rubber gasket (61) sleeved on the movable plug body (3) and fixedly connected to the injection cylinder (1), and a rubber suction cup (62) sleeved on the rubber gasket (61) and fixedly connected to the injection cylinder (1). When the movable plug body (3) is pushed into the injection cylinder (1) during the cement plugging process, the rubber gasket (61) and the wall (2) are in a sealed state to prevent cement from overflowing, and at the same time, the rubber suction cup (62) and the wall (2) are in an attached state to maintain stability during the cement plugging process.

2. The construction equipment for plugging the tension bolt holes for fixing the template of a hydraulic engineering project according to claim 1 is characterized in that: The movable plug body (3) is composed of a guide tube (32) and a rubber ring sleeve (33) fixedly mounted thereon. The internal pipeline of the guide tube (32) is the injection channel (31). A sealing sleeve (321) is fixedly mounted in the injection cylinder (1) near the front end thereof. The guide tube (32) is slidably mounted in the sealing sleeve (321).

3. The construction equipment for plugging the tension bolt holes for fixing formwork in a hydraulic engineering project according to claim 2 is characterized in that: The guide tube (32) is provided with a lever (322) which passes through the sealing sleeve (321) and the injection cylinder (1) in sequence and extends vertically outward. The sealing sleeve (321) and the injection cylinder (1) are both provided with a guide groove (3211) along their own axial direction for the lever (322) to move. When the positioning member (5) fixes the guide tube (32), the lever (322) is in a position where it contacts one end of the guide groove (3211) or the other end of the guide groove (3211).

4. The construction equipment for plugging the tension bolt holes for fixing formwork in a hydraulic engineering project according to claim 3 is characterized in that: The lever (322) is provided with a pressure relief port (3221) along its own axial direction and communicates with the flow guide pipe (32).

5. The construction equipment for plugging the tension bolt holes for fixing formwork in water conservancy projects according to claim 3 is characterized in that: The positioning member (5) is specifically a ring structure sleeved on the injection cylinder (1); the positioning member (5) is provided with a notch along its own axial direction through which the lever (322) can pass; the injection cylinder (1) is fixedly provided with a pair of limiting portions (51) for limiting the positioning member (5) therein; when the user rotates the positioning member (5) so that the notch thereon is misaligned with the moving path of the lever (322), the lever (322) is in a fixed state where it is pressed by the positioning member (5) in the guide groove (3211), thereby causing the guide tube (32) to be fixed together.

6. The construction equipment for plugging the tension bolt holes for fixing formwork in a hydraulic engineering project according to claim 2, characterized in that: The injection channel (31) is a channel structure that narrows from the inside of the injection barrel (1) to the outside along its own axial direction, and the end edge of the squeezing rod (41) that can enter the injection channel (31) is chamfered.

7. The construction equipment for plugging the tension bolt holes for fixing formwork in a hydraulic engineering project according to claim 1 is characterized in that: The propulsion assembly (42) is arranged in the injection cylinder (1) and at a position directly opposite to the feed port (11), and the propulsion assembly (42) comprises a shaft sleeve (421) sleeved on the extrusion rod (41), and a rotary driver (422) for driving the shaft sleeve (421) to rotate, a bearing (4211) is connected between the shaft sleeve (421) and the injection cylinder (1), and a spiral blade (4212) is provided on the outer surface of the shaft sleeve (421).

8. A construction method for plugging the tension bolt holes for fixing formwork of a water conservancy project, applied to a construction device for plugging the tension bolt holes for fixing formwork of a water conservancy project as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1, operating the movable plug body (3) to insert into the bolt hole (21), at which time the abutment assembly (6) is supported on the surface of the wall (2), and then starting the propulsion assembly (42) to transport cement slurry in the direction of the movable plug body (3); S2, operating the squeezing rod (41) to introduce cement slurry into the bolt hole (21) through the injection channel (31), until the user feels that the squeezing action of the squeezing rod (41) encounters obvious resistance, which indicates that the area between the bolt hole (21) and the movable plug body (3) is filled with cement slurry; S3. Operate the movable plug (3) to push into the injection barrel (1) and fix it with the positioning member (5). At this time, the unfilled area of ​​the bolt hole (21) is exposed, and continue to operate the squeezing rod (41) to reciprocate and push the cement slurry until the user feels that the squeezing action of the squeezing rod (41) is subject to obvious resistance, which indicates that the remaining unfilled area of ​​the bolt hole (21) is filled with cement slurry.

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