A hand-held joint inserter for airport runway concrete

Abstract

The utility model discloses an airport runway concrete handheld type caulking device relates to caulking construction tool technical field, including mounting bracket, the inboard rotation of mounting bracket is connected with adjusting assembly, and adjusting assembly includes with the rotation of mounting bracket Connection shell, the inside rotation of connection shell is connected with worm, and the bottom end of worm is connected with worm wheel and engages, and one side fixed connection of worm wheel has the carousel, and the inner wall of carousel is provided with a plurality of first guide sliding slot, in the utility model, through the transmission cooperation of worm and worm wheel, the guidance of combining arc first guide sliding slot and linear second guide sliding slot to sliding column, the outer diameter of adjusting a plurality of pressing plate combination formation's caulking roller, need not frequently replace roller to be able to adapt to different specifications runway gap, effectively solved the problem of poor adaptability of traditional fixed specification roller, reduces the construction interruption time, improves the operation continuity.

Description

Technical Field

[0001] This utility model relates to the technical field of caulking construction tools, specifically a handheld caulking tool for airport runway concrete. Background Technology

[0002] Airport runways, as critical infrastructure for aircraft takeoff and landing, rely heavily on expansion joints and slab gaps between their concrete slabs to ensure structural stability. Joint sealing construction must achieve two core objectives: first, by installing backing strips and filling with sealant, it must seal the gaps to prevent rainwater and debris from intruding, thus avoiding freeze-thaw damage, cracking, and displacement of the concrete slabs; second, it must ensure the smoothness of the gap perimeter after sealing, meeting the load-bearing strength and taxiing safety requirements for aircraft takeoff and landing. Therefore, the sealant roller, as the core actuator of the sealant applicator, must possess strong adaptability, stable joint pressing, and uniform stress distribution to ensure consistent backing strip installation depth, dense sealant filling, and a smooth surface.

[0003] In existing technologies, the outer diameter of integral rollers is fixed, which cannot adapt to the different widths and depths of gaps in airport runways. When faced with fluctuations in gap size, rollers of the corresponding specifications need to be frequently disassembled and replaced, which not only increases construction interruption time, but also requires the stockpiling of rollers of various specifications, increasing equipment investment costs. Although the disassembled replacement structure can replace roller components, the adjustment process is cumbersome, and the positioning needs to be recalibrated after replacement, which can easily lead to deviations in construction accuracy.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this invention is to provide a handheld caulking tool for airport runway concrete to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a handheld caulking tool for airport runway concrete, including a mounting frame. An adjustment component is rotatably connected to the inner side of the mounting frame. The adjustment component includes a connecting shell rotatably connected to the mounting frame. A worm gear is rotatably connected inside the connecting shell. A worm wheel is meshed at the bottom end of the worm gear. A turntable is fixedly connected to one side of the worm wheel. The inner wall of the turntable has multiple first guide grooves. A sliding column is slidably connected to the inner wall of each first guide groove. A fixed shell is slidably connected to the outer wall of the sliding column. The outer wall of the fixed shell has multiple second guide grooves. Each second guide groove is slidably connected to a corresponding sliding column.

[0007] Furthermore, a pressure plate is slidably connected to the top of the sliding column, and a bolt is threadedly connected to the side of the sliding column near the pressure plate, with the outer wall of the bolt threadedly connected to the inner wall of the pressure plate.

[0008] Furthermore, multiple pressure plates are provided, and the multiple pressure plates are combined to form a caulking roller structure, and the arc surface of each pressure plate is adapted to the gap of the track.

[0009] Furthermore, a push rod is fixedly connected to the top of the mounting bracket, and a handle is fixedly connected to one side of the push rod. The outer wall of the handle is covered with an anti-slip texture.

[0010] Furthermore, one end of the worm extends to the outside of the connecting housing, and a knob is fixedly connected to the extended end of the worm.

[0011] Furthermore, the outer wall of the turntable is rotatably connected to the inner wall of the connecting shell, and a mounting post is fixedly connected to the middle of the worm gear, and the worm gear is fixedly connected to the turntable through the mounting post.

[0012] Furthermore, the first guide groove is an arc-shaped groove, the second guide groove is a straight groove, the pressure plate is made of rubber, and the surface of the pressure plate is integrally formed with anti-slip protrusions.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By using the transmission of worm gear and worm wheel, combined with the guidance of the sliding column by the arc-shaped first guide groove and the straight second guide groove, the outer diameter of the caulking roller formed by multiple pressure plates can be adjusted. It can adapt to different specifications of track gaps without frequent roller replacement, effectively solving the problem of poor adaptability of traditional fixed specification rollers, reducing construction interruption time and improving the continuity of operation.

[0015] 2. The pressure plate is detachably fixed by bolts and sliding columns. When a single pressure plate is worn or damaged, there is no need to replace the entire caulking roller. Only the bolts need to be removed to replace the damaged pressure plate, which greatly reduces the consumption of parts and maintenance costs. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a handheld caulking device for airport runway concrete.

[0017] Figure 2 This is a schematic diagram of the mounting frame in a handheld caulking tool for airport runway concrete.

[0018] Figure 3 This is a schematic diagram of the adjustment component in a handheld caulking tool for airport runway concrete.

[0019] Figure 4 A schematic diagram of the guide groove in a handheld caulking tool for airport runway concrete.

[0020] Figure 5 This is a schematic diagram showing the separation of the pressure plate and sliding column in a handheld caulking device for airport runway concrete.

[0021] In the diagram: 1. Mounting bracket; 2. Connecting housing; 3. Worm gear; 4. Worm wheel; 5. Turntable; 6. First guide groove; 7. Sliding column; 8. Fixed housing; 9. Second guide groove; 10. Pressure plate; 11. Bolt; 12. Push rod; 13. Handle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides a technical solution: a handheld caulking tool for airport runway concrete, including a mounting frame 1. An adjustment component is rotatably connected to the inner side of the mounting frame 1. The adjustment component includes a connecting shell 2 rotatably connected to the mounting frame 1. A worm gear 3 is rotatably connected inside the connecting shell 2. A worm wheel 4 is meshed with the bottom end of the worm gear 3. By rotating the end of the worm gear 3, which extends to the outside of the connecting shell 2, the operator drives the worm gear 3 to rotate around its own horizontal axis. Because the worm gear 3 meshes with the worm wheel 4, the horizontal circular rotation of the worm gear 3 is converted into the vertical circular rotation of the worm wheel 4. A turntable 5 is fixedly connected to one side of the worm wheel 4. Multiple first guide grooves 6 are formed on the inner wall of the turntable 5. The worm wheel 4 drives the fixed turntable 5 to rotate synchronously. The turntable 5 rotates around its own central axis, and the first guide grooves 6 on the inner wall move in a circular motion with the turntable 5. The inner wall of each first guide groove 6... Each component is slidably connected to a sliding column 7, and a fixed outer shell 8 is slidably connected to the outer wall of the sliding column 7. The outer wall of the fixed outer shell 8 has multiple second guide grooves 9, each of which is slidably connected to the corresponding sliding column 7. Because the sliding column 7 is simultaneously fitted into the first guide groove 6 and the second guide groove 9, when the first guide groove 6 rotates with the turntable 5, the inner wall of the first guide groove 6 generates a radial thrust on the sliding column 7. The second guide groove 9 is a straight groove, which restricts the sliding column 7 to only move radially along the fixed outer shell 8 and prevents it from rotating with the turntable 5. Ultimately, the arc-shaped movement of the first guide groove 6 is converted into the radial linear movement of the sliding column 7. When the sliding column 7 moves radially linearly, the outer diameter is adjusted, and the rounding or shrinking action of the caulking roller is completed. Throughout the process, the fixed outer shell 8 is always fixed to the connecting outer shell 2 and does not participate in the rotation, only providing a guiding function.

[0024] See Figure 4 , Figure 5A pressure plate 10 is slidably connected to the top of the sliding column 7. A bolt 11 is threadedly connected to the side of the sliding column 7 near the pressure plate 10. The outer wall of the bolt 11 is threadedly connected to the inner wall of the pressure plate 10. The outer contour of the pressure plate 10, with its outer diameter adjusted, fits against the inner wall of the gap. When the operator pushes the equipment along the gap, multiple pressure plates 10 begin to roll, squeezing the backing strip or caulking material in the gap through the convex surface to complete the caulking operation. When a pressure plate 10 is damaged, it is not necessary to replace the whole plate; only the damaged pressure plate 10 needs to be replaced. The bolt 11 enables the sliding column 7 and the pressure plate 10 to be detachably fixed, making it easy to replace the pressure plate 10 individually after it is worn. At the same time, the tightness of the bolt 11 can be adjusted to ensure that the pressure plate 10 and the sliding column 7 fit tightly, preventing the pressure plate 10 from loosening during construction.

[0025] See Figure 3 , Figure 4 Multiple pressure plates 10 are provided, and the multiple pressure plates 10 are combined to form a joint-sealing roller structure. The arc surface of each pressure plate 10 is adapted to the gap in the track. The joint-sealing roller formed by the combination of multiple pressure plates 10 can adjust its overall outer diameter by the radial expansion and contraction of the sliding column 7, which can adapt to gaps of different widths and depths. Compared with traditional fixed-specification integral rollers, there is no need to frequently disassemble and replace the roller due to changes in gap size. Only the expansion or contraction of the pressure plate 10 needs to be adjusted, which greatly reduces construction interruption time and improves work efficiency.

[0026] See Figure 1 A push rod 12 is fixedly connected to the top of the mounting bracket 1, and a handle 13 is fixedly connected to one side of the push rod 12. The outer wall of the handle 13 is covered with anti-slip texture. When the operator applies force through the push rod 12, the pushing force can be directly transmitted to multiple pressure plates 10 without bending over or getting close to the gaps in the aisle, reducing the muscle burden on the waist and back. Holding the handle 13 with both hands can stably control the direction of the equipment's advancement and avoid deviation caused by hand shaking.

[0027] See Figure 2 One end of the worm gear 3 extends to the outside of the connecting housing 2, and a knob is fixedly connected to the extended end of the worm gear 3. This allows the operator to adjust the gear directly without disassembling the connecting housing 2. The knob, as an intermediate operating component, prevents the operator's hands from directly contacting the metal end of the worm gear 3. This prevents hand injuries from the threads or edges of the worm gear 3 during construction, especially when the worm gear 3 develops rust or burrs due to long-term use, effectively reducing safety hazards. Furthermore, it prevents sweat and dirt from directly contaminating the worm gear 3, reducing corrosion on its surface. It also prevents debris from entering the equipment through the gap between the worm gear 3 and the connecting housing 2, protecting the meshing structure of the worm gear 3 and the worm wheel 4, and extending the service life of the adjustment components.

[0028] See Figure 5The pressure plate 10 is made of rubber, and the surface of the pressure plate 10 is integrally molded with anti-slip protrusions. The rubber pressure plate 10 can avoid damaged edges and corners through slight deformation, prevent the damage from expanding due to scratching by the hard pressure plate 10, protect the original flatness and structural integrity of the track, and reduce the maintenance cost of the track in the later stage.

[0029] See Figure 3 , Figure 4 The first guide groove 6 is an arc-shaped groove, and the second guide groove 9 is a straight groove. The arc-shaped trajectory of the first guide groove 6, when moving synchronously with the turntable 5 in a circular motion, generates a continuous and uniform radial thrust on the sliding column 7. The straight groove of the second guide groove 9 restricts the sliding column 7 to move only in a straight line along the radial direction of the fixed housing 8, preventing the sliding column 7 from shifting circumferentially with the turntable 5. The combination of these two features precisely converts the circular rotation of the turntable 5 into the radial extension and retraction of the sliding column 7, ensuring that multiple sliding columns 7 are adjusted synchronously and smoothly, avoiding adjustment jams or shifts caused by chaotic movement directions, and providing a foundation for the pressure plate 10 to assemble into a regular, fitted roller.

[0030] Working principle: The operator first rotates the knob at the end of the worm 3 that extends to the outside of the outer casing 2, causing the worm 3 to rotate around its own horizontal axis. Since the worm 3 meshes with the worm wheel 4, the power is converted into the vertical circumferential rotation of the worm wheel 4, which in turn drives the turntable 5 fixed thereto to rotate synchronously. The multiple arc-shaped first guide grooves 6 on the inner wall of the turntable 5 rotate with it, generating radial thrust on the sliding column 7 that is embedded therein. Meanwhile, the straight second guide grooves 9 on the fixed outer casing 8 restrict the sliding column 7 to only move in a straight line along the radial direction, thus realizing the extension and retraction adjustment of the sliding column 7. This allows the multiple rubber pressure plates 10 that are detachably fixed at the top by bolts 11 to combine to form a caulking roller that adapts to the gaps in the track.

[0031] The operator then applies force by holding the non-slip handle 13 on one side of the push rod 12 at the top of the mounting frame 1, pushing the equipment to move along the gap. At this time, the adjustment component can rotate around the mounting frame 1 to adapt to the direction of the gap. Multiple pressure plates 10 roll and squeeze the backing strip or caulking material in the gap to complete the caulking. If the pressure plate 10 is damaged, only the bolt 11 needs to be removed to replace a single pressure plate 10, without the need to replace the entire part.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A handheld caulking device for airport runway concrete, comprising a mounting frame (1), characterized in that: An adjustment assembly is rotatably connected to the inner side of the mounting bracket (1). The adjustment assembly includes a connecting shell (2) rotatably connected to the mounting bracket (1). A worm gear (3) is rotatably connected inside the connecting shell (2). A worm wheel (4) is meshed at the bottom end of the worm gear (3). A turntable (5) is fixedly connected to one side of the worm wheel (4). Multiple first guide grooves (6) are opened on the inner wall of the turntable (5). A sliding column (7) is slidably connected to the inner wall of each first guide groove (6). A fixed shell (8) is slidably connected to the outer wall of the sliding column (7). Multiple second guide grooves (9) are opened on the outer wall of the fixed shell (8). Each second guide groove (9) is slidably connected to the corresponding sliding column (7).

2. The handheld caulking device for airport runway concrete as described in claim 1, characterized in that: The top of the sliding column (7) is slidably connected to a pressure plate (10), and a bolt (11) is threadedly connected to the side of the sliding column (7) near the pressure plate (10). The outer wall of the bolt (11) is threadedly connected to the inner wall of the pressure plate (10).

3. The handheld caulking device for airport runway concrete as described in claim 2, characterized in that: Multiple pressure plates (10) are provided, and multiple pressure plates (10) are combined to form a caulking roller structure, and the arc surface of each pressure plate (10) is adapted to the gap of the track.

4. The handheld caulking device for airport runway concrete as described in claim 3, characterized in that: The top of the mounting bracket (1) is fixedly connected to a push rod (12), and a handle (13) is fixedly connected to one side of the push rod (12). The outer wall of the handle (13) is covered with an anti-slip texture.

5. The handheld caulking device for airport runway concrete as described in claim 4, characterized in that: One end of the worm (3) extends to the outside of the connecting housing (2), and a knob is fixedly connected to the extended end of the worm (3).

6. The handheld caulking device for airport runway concrete as described in claim 5, characterized in that: The outer wall of the turntable (5) is rotatably connected to the inner wall of the connecting shell (2), and the middle part of the worm wheel (4) is fixedly connected to the mounting column. The worm wheel (4) is fixedly connected to the turntable (5) through the mounting column.

7. The handheld caulking device for airport runway concrete as described in claim 6, characterized in that: The first guide groove (6) is an arc-shaped groove, and the second guide groove (9) is a straight groove.

8. The handheld caulking device for airport runway concrete as described in claim 7, characterized in that: The pressure plate (10) is made of rubber, and the surface of the pressure plate (10) is integrally formed with anti-slip protrusions.

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