Bolt hole waterproof plugging device and plugging method

Abstract

The invention relates to the technical field of building construction, in particular to a bolt hole waterproof plugging device and plugging method. Comprising a pile casing, a lengthening rod, an occlusion mechanism and two rubber sleeves which expand when encountering water. Anti-skid clamping sets are arranged in the middle of the protective cylinder and close to the baffles. The extension bar is movably inserted into one end of the protective cylinder; the occlusion mechanism comprises an occlusion rod and a screw rod screwed in the other end of the pile casing, the occlusion rod is of a double-layer step-shaped structure and is located between the lengthening rod and the screw rod, the inner layer of the occlusion rod is slidably clamped in the clamping hole, and the end face of the outer layer of the occlusion rod is provided with a pawl engaged with the ratchet teeth in a one-way rotation mode; and a spring is sleeved on the inner-layer rod body of the occlusion rod and between the outer-layer rod body and the screw rod. Through mechanical linkage of the pile casing, the lengthening rod and the meshing mechanism, single-time integrated operation of hole cleaning, positioning and sealing procedures is achieved, and efficiency loss and human error risks caused by multi-step construction are thoroughly eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a bolt hole waterproof plugging device and a plugging method. Background Art

[0002] In construction projects, tension bolts are widely used in scenes such as reinforcement of concrete shear walls, fixing of secondary structure column formwork, connection of climbing frames and structural walls, installation of tower crane attachments, etc., and a large number of through-bolt holes are left after construction. For walls with waterproofing requirements, the traditional sealing process requires first cleaning the holes and then pouring the expansion mortar. After the initial setting, the outer side of the wall needs to be painted with 2-3 sides of waterproof coating, and the inner side of the wall needs to be smoothed with mortar. The process is cumbersome and depends on the accuracy of manual operation. It is very easy to cause leakage hazards due to mortar shrinkage and uneven coating coverage. Although indoor walls without waterproofing requirements are filled with foam materials, the adhesion between the foam and the hole wall is poor. The temperature stress of the later decoration can easily cause cracks in the sealing parts, which looks bad and causes the wall layer to fall off in severe cases. Summary of the invention

[0003] The present invention aims to solve the above-mentioned problem, thereby providing a bolt hole waterproof plugging device and a plugging method which avoid multiple plugging.

[0004] The present invention solves the above-mentioned problem by adopting the following technical solution: A bolt hole waterproof plugging device, comprising a casing, an extension rod, a snap mechanism and two rubber sleeves that swell when exposed to water; The inner cavity of the casing is provided with unidirectional thread structures at both ends, annular baffles are respectively mounted on both sides of the casing, and anti-slip card groups are respectively arranged in the middle of the casing and close to the baffles. Two rubber sleeves are respectively mounted on the ends of the casing and abut against the baffles. The extension rod is movably inserted into one end of the casing, a plug is provided at the outer end of the extension rod, an external thread is provided on the rod body of the extension rod and on one side close to the plug, and ratchet teeth are provided on the inner end surface of the extension rod; The bite mechanism includes a bite rod and a screw rod threaded into the other end of the casing, a chuck is provided at the outer end of the screw rod, a clamping hole is opened axially in the middle of the screw rod, the bite rod has a double-layer stepped structure and is located between the extension rod and the screw rod, the inner layer of the bite rod is slidably clamped in the clamping hole, and a pawl that unidirectionally rotates and meshes with the ratchet teeth is provided on the end face of the outer layer of the bite rod, and a spring is sleeved on the inner layer rod body of the bite rod and between the outer layer rod body and the screw rod.

[0005] A bolt hole waterproof plugging method using a bolt hole waterproof plugging device comprises the following steps; ‌S1: Use a hole cleaning tool to remove debris and residue from the bolt hole to ensure that there is no foreign matter in the hole.

[0006] S2: Two rubber sleeves are respectively mounted on the outer sides of the baffles at both ends of the casing, and the axial length of the rubber sleeve exceeds the distance between the baffle and the end of the casing.

[0007] ‌S3: Insert the extension rod from the rear end of the casing and initially screw it together and fix it with the thread structure of the inner cavity of the casing through the external thread.

[0008] ‌S4: Assemble the bite rod, screw and spring and insert them into the other end of the casing without tightening them. At this time, the spring is in a compressed state.

[0009] S5: After the casing with the rubber sleeve is inserted into the bolt hole to be blocked, an annular anti-slip fixation is formed between the anti-slip card group and the hole wall.

[0010] S6: Prepare a positioning plate that matches the chuck and install it on the hand drill. After the positioning plate is engaged with the chuck, when the hand drill drives the screw counterclockwise, the spring pushes the pawl of the engaging rod to engage with the ratchet teeth of the extension rod in one direction, so that the extension rod can only rotate in the direction of screwing into the casing. The hand drill drives the extension rod to be completely screwed into the casing, and the plug of the extension rod is embedded in the bolt hole and squeezes the rubber sleeve to fill one end of the bolt hole.

[0011] ‌S7: Switch the hand drill to drive the screw clockwise, causing the screw to be completely screwed into the casing. The chuck is embedded in the bolt hole and squeezes the rubber sleeve to fill the other end of the bolt hole, and the sealing is completed.

[0012] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features: Through the mechanical linkage of the casing, extension rod and bite mechanism, a single integrated operation of hole cleaning, positioning and sealing processes is achieved, completely eliminating the efficiency loss and risk of human error caused by multi-step construction; utilizing the two-way extrusion of the extension rod plug and the chuck, the rubber sleeve is driven to expand synchronously at both ends of the hole to form a gapless sealing interface, breaking through the technical bottleneck of shrinkage and cracking of traditional one-way filling materials; the one-way meshing design of the pawl of the bite mechanism and the ratchet teeth of the extension rod, combined with the spring preload, ensures that the extension rod can only move in the screw-in direction, prevents reverse rotation and loosening, and improves sealing reliability.

[0013] Preferably, a further technical solution of the present invention is: Furthermore, at least two positioning holes are equidistantly arranged on the front side of the chuck along the circumferential direction. The equidistantly distributed positioning holes on the chuck and the protrusions of the hand drill positioning plate form a "quick alignment interface" to ensure the coaxiality of the torque transmission during the driving process and avoid uneven extrusion of the rubber sleeve caused by eccentric rotation.

[0014] Furthermore, each anti-slip card group includes three anti-slip cards arranged at equal intervals along the circumferential direction. The anti-slip card is arc-shaped and one end is hinged to the outer wall of the casing. A memory metal sheet is arranged between the middle part of the inner arc of the anti-slip card and the casing. When the casing is installed, the martensitic phase transformation is triggered by the pressure of the hole wall, providing radial elastic support force to prevent the casing from rotating when the driving screw rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the assembled three-dimensional structure of an embodiment of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure during the assembly process of an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a positioning plate according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a screw rod according to an embodiment of the present invention; Figure 5 It is a schematic structural diagram of a bite rod according to an embodiment of the present invention; Figure 6 It is a schematic structural diagram of a spring according to an embodiment of the present invention; Figure 7 This is a schematic structural diagram of an extension rod according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the casing according to an embodiment of the present invention; Fig. 9 This is a schematic diagram of the structure of a rubber sleeve according to an embodiment of the present invention; Fig.10 It is a schematic diagram of the explosion structure of an embodiment of the present invention; The markings in the figure are: casing 1, baffle 101, rubber sleeve 102, anti-slip card group 103, extension rod 2, plug 201, ratchet teeth 203, screw 3, chuck 301, bite rod 4, pawl 401, positioning plate 5, spring 6. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0017] A bolt hole waterproof plugging device, comprising a casing 1, an extension rod 2, a snap mechanism and two water-swellable rubber sleeves 102; The two ends of the inner cavity of the casing 1 are provided with the same direction thread structure (both are tightened in the clockwise direction), and the two sides of the casing 1 are respectively provided with annular baffles 101, and the middle of the casing 1 and close to the baffles 101 are respectively provided with anti-slip card groups 103, and two rubber sleeves 102 are respectively sleeved on the ends of the casing 1 and abut against the baffles 101; The extension rod 2 is movably inserted into one end of the casing 1, a plug 201 is provided at the outer end of the extension rod 2, an external thread is provided on the rod body of the extension rod 2 and on one side close to the plug 201, and a ratchet tooth 203 is provided on the inner end surface of the extension rod 2; The bite mechanism includes a bite rod 4 and a screw rod 3 screwed into the other end of the casing 1. A chuck 301 is provided at the outer end of the screw rod 3. A clamping hole is opened in the middle of the screw rod 3 along the axial direction. A clamping hole is also provided on the chuck 301. The bite rod 4 has a double-layer stepped structure and is located between the extension rod 2 and the screw rod 3. The inner layer of the bite rod 4 is slidably clamped in the clamping hole. A ratchet 4 is provided on the end surface of the outer layer of the bite rod 4 to unidirectionally rotate and mesh with the ratchet teeth 203. 01, a spring 6 is mounted on the inner rod body of the bite rod 4 and between the outer rod body and the screw rod 3, the ratchet teeth 203 are asymmetric triangular tooth shapes uniformly distributed on the end face circumference, the locking side tooth surface is perpendicular to the tangent of the base circle, the sliding side tooth surface is a 55° involute curvature, the pawl 401 is a wedge-shaped driving tooth shape uniformly distributed on the end face circumference and matched with the ratchet, the locking surface is parallel to the vertical tooth surface of the ratchet, the sliding surface is a continuous transition surface with a curvature radius ρ=2mm, and the tooth number ratio of the ratchet teeth 203 and the pawl 401 is 1:1.

[0018] A bolt hole waterproof plugging method using a bolt hole waterproof plugging device comprises the following steps; ‌S1: Use a hole cleaning tool to remove debris and residue from the bolt hole to ensure that there is no foreign matter in the hole.

[0019] S2: Two rubber sleeves 102 are respectively sleeved on the outer sides of the baffles 101 at both ends of the casing 1, and the axial length of the rubber sleeves 102 exceeds the distance between the baffles 101 and the end of the casing 1.

[0020] S3: Insert the extension rod 2 from the rear end of the casing 1 and initially screw and fix it with the thread structure of the inner cavity of the casing 1 through the external thread.

[0021] S4: Assemble the bite rod 4, the screw rod 3 and the spring 6 and insert them into the other end of the casing 1 without tightening them. At this time, the spring 6 is in a compressed state.

[0022] S5: After the casing 1 with the rubber sleeve 102 is inserted into the bolt hole to be blocked, the anti-skid card group 103 forms an annular anti-skid fixing effect with the hole wall.

[0023] S6: prepare a positioning plate 5 that matches the chuck 301 and install it on the hand drill. A rod body connected to the hand drill is set on one side of the positioning plate 5. After the positioning plate 5 is clamped with the chuck 301, when the hand drill drives the screw 3 counterclockwise, the spring 6 pushes the pawl 401 of the engaging rod 4 to engage with the ratchet teeth 203 of the extension rod 2 in one direction, so that the extension rod 2 can only rotate in the direction of screwing into the casing 1. The hand drill drives the extension rod 2 to be completely screwed into the casing 1, and the plug 201 of the extension rod 2 is embedded in the bolt hole and squeezes the rubber sleeve 102 to fill one end of the bolt hole.

[0024] S7: Switch the hand drill to drive the screw 3 clockwise, so that the screw 3 is completely screwed into the casing 1, the chuck 301 is embedded in the bolt hole and squeezes the rubber sleeve 102 to fill the other end of the bolt hole, and the plugging is completed.

[0025] Furthermore, at least two positioning holes are equidistantly arranged on the front side of the chuck 301 along the circumferential direction. The equidistantly distributed positioning holes on the chuck 301 and the protrusions of the hand drill positioning plate 5 form a "quick alignment interface" to ensure the coaxiality of the torque transmission during the driving process and avoid uneven extrusion of the rubber sleeve 102 caused by eccentric rotation.

[0026] Furthermore, each anti-skid card group 103 includes three anti-skid cards arranged at equal intervals along the circumferential direction. The anti-skid card is arc-shaped and one end is hinged to the outer wall of the casing 1. A memory metal sheet is arranged between the middle part of the inner arc of the anti-skid card and the casing 1. When the casing 1 is installed, the martensitic phase transformation is triggered by the pressure of the hole wall, providing radial elastic support force to prevent the casing 1 from rotating when the driving screw 3 rotates.

[0027] Through the mechanical linkage of the casing 1, the extension rod 2 and the bite mechanism, a single integrated operation of the hole cleaning, positioning and sealing processes is realized, and the efficiency loss and risk of human error caused by multi-step construction are completely eliminated; the two-way extrusion of the extension rod 2 plug 201 and the chuck 301 is utilized to drive the rubber sleeve 102 to expand synchronously at both ends of the hole to form a gapless sealing interface, breaking through the technical bottleneck of shrinkage and cracking of traditional one-way filling materials; the one-way meshing design of the pawl 401 of the bite mechanism and the ratchet tooth 203 of the extension rod 2, combined with the preload of the spring 6, ensures that the extension rod 2 can only move in the screw-in direction, prevents reverse rotation and loosening, and improves the sealing reliability. Water vapor and moisture in the later stage can stimulate the rubber sleeve 102 to expand.

[0028] The above description is only a preferred feasible embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent changes made using the contents of the present specification and its drawings are included in the scope of rights of the present invention.

Claims

1. A bolt hole waterproof plugging device, characterized in that: It includes a casing, an extension rod, a bite mechanism and two rubber sleeves that swell when exposed to water; The inner cavity of the casing is provided with unidirectional thread structures at both ends, annular baffles are respectively mounted on both sides of the casing, and anti-slip card groups are respectively arranged in the middle of the casing and close to the baffles. Two rubber sleeves are respectively mounted on the ends of the casing and abut against the baffles. The extension rod is movably inserted into one end of the casing, a plug is provided at the outer end of the extension rod, an external thread is provided on the rod body of the extension rod and on one side close to the plug, and ratchet teeth are provided on the inner end surface of the extension rod; The bite mechanism includes a bite rod and a screw rod threaded into the other end of the casing, a chuck is provided at the outer end of the screw rod, a clamping hole is opened axially in the middle of the screw rod, the bite rod has a double-layer stepped structure and is located between the extension rod and the screw rod, the inner layer of the bite rod is slidably clamped in the clamping hole, and a pawl that unidirectionally rotates and meshes with the ratchet teeth is provided on the end face of the outer layer of the bite rod, and a spring is sleeved on the inner layer rod body of the bite rod and between the outer layer rod body and the screw rod.

2. The bolt hole waterproof plugging device according to claim 1, characterized in that: At least two positioning holes are equidistantly arranged on the front side of the chuck along the annular direction.

3. The bolt hole waterproof plugging device according to claim 1, characterized in that: Each anti-skid card group includes three anti-skid cards arranged at equal intervals along the circumferential direction. The anti-skid card is arc-shaped and one end is hinged to the outer wall of the casing. A memory metal sheet is arranged between the middle part of the inner arc of the anti-skid card and the casing.

4. A method for waterproofing and plugging bolt holes using the bolt hole waterproof plugging device according to claim 1, characterized in that: The method comprises the following steps: ‌S1: Use a hole cleaning tool to remove debris and residues in the bolt hole to ensure that there is no foreign matter in the hole; ‌S2: Two rubber sleeves are respectively mounted on the outer sides of the baffles at both ends of the casing, and the axial length of the rubber sleeve exceeds the distance between the baffle and the end of the casing; S3: Insert the extension rod from the rear end of the casing and initially screw and fix it with the thread structure of the casing inner cavity through the external thread; ‌S4: Assemble the bite rod, screw and spring and insert them into the other end of the casing without tightening them. At this time, the spring is in a compressed state; ‌S5: After the casing with the rubber sleeve is inserted into the bolt hole to be blocked, the anti-slip card group forms an annular anti-slip fixation with the hole wall; S6: Prepare a positioning plate that matches the chuck and install it on the hand drill. After the positioning plate is engaged with the chuck, when the hand drill drives the screw rod counterclockwise, the spring pushes the pawl of the bite rod to engage with the ratchet teeth of the extension rod in one direction, so that the extension rod can only rotate in the direction of screwing into the casing. The hand drill drives the extension rod to be completely screwed into the casing, and the plug of the extension rod is embedded in the bolt hole and squeezes the rubber sleeve to fill one end of the bolt hole; ‌S7: Switch the hand drill to drive the screw clockwise, causing the screw to be completely screwed into the casing. The chuck is embedded in the bolt hole and squeezes the rubber sleeve to fill the other end of the bolt hole, and the sealing is completed.

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