A crack filling device for road and bridge construction

Abstract

The present invention relates to the technical field of crack filling devices, and specifically to a crack filling device for road and bridge construction. The filling device is applied to a road surface with cracks, and includes a shell, a handle, a drive motor drill bit, and a liquid injection tube; the shell is provided with an inner cavity; the handle is connected to the shell; the drive motor is arranged in the inner cavity; the drill bit is connected to the output shaft of the drive motor; the drill bit has a relative connection end and a drilling end, and the connection end is closer to the drive motor relative to the drilling end; the drill bit is provided with a liquid injection through hole, and the liquid injection through hole has a liquid inlet and a liquid outlet, and the liquid outlet is located at the drilling end; the drill bit is used to drill into the road surface and generate a borehole inside the road surface; one end of the liquid injection tube is connected to the shell and communicated with the liquid injection through hole, and the other end is exposed to the outside of the shell. The filling device can directly perform the glue injection operation after the drilling is completed, so the operation steps of crack filling can be reduced, thereby improving the processing efficiency of crack filling.

Description

Technical Field

[0001] The invention relates to the technical field of crack filling devices, and in particular to a crack filling device for road and bridge construction. Background Art

[0002] In the long-term use of roads and bridges, various cracks will gradually form over time due to the influence of traffic loads, environmental factors, and road materials and structures. The appearance of cracks not only damages the continuity and smoothness of the road surface, affecting the appearance and driving comfort of the road surface, but also easily causes water to erode the roadbed and reduce the service life of the road surface, while also increasing the maintenance work and costs of the road surface.

[0003] At present, when filling cracks in roads and bridges, it is usually necessary to use a drilling device to drill a hole in the road surface that is connected to the bottom of the crack, and then use a glue injection device to inject glue into the hole to fill the crack. Since the glue injection position is at the bottom of the crack, the glue injection resistance is large, and the glue injection port of the glue injection device is easy to fall out, so multiple small amounts of glue injection are often used, which requires the staff to use the drilling device to drill multiple holes at different positions, and then use the glue injection device to perform glue injection operations on the holes at different positions respectively.

[0004] Therefore, the operation steps of the above-mentioned road bridge crack filling are relatively cumbersome and complicated, and the work efficiency is low, so the above-mentioned problems need to be solved urgently. Summary of the invention

[0005] Based on this, it is necessary to provide a road and bridge construction crack filling device to address the problems of cumbersome and complicated operation and low work efficiency of the current road and bridge crack filling operations.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A crack filling device for road and bridge construction, which is applied to a road surface with cracks, the filling device comprises a shell, a handle, a drive motor drill bit and an injection tube; the shell is provided with an inner cavity; the handle is connected to the shell; the drive motor is arranged in the inner cavity; the drill bit is connected to the output shaft of the drive motor; the drill bit has a relative connecting end and a drilling end, the connecting end is closer to the drive motor than the drilling end; the drill bit is provided with an injection through hole, the injection through hole has a liquid inlet and a liquid outlet, and the liquid outlet is located at the drilling end; the drill bit is used to drill into the road surface and produce a borehole inside the road surface; one end of the injection tube is connected to the shell and communicated with the injection through hole, and the other end is exposed to the outside of the shell.

[0008] In one of the embodiments, the filling device also includes a transmission assembly, which is transmission-connected between the drive motor and the drill bit; the transmission assembly includes a driving gear, a driven gear and a clamping block; the driving gear is connected to the output shaft of the drive motor, the driven gear is connected to the clamping block, the driven gear is meshed with the driving gear, and the drill bit is inserted into the clamping block and is key-connected to the clamping block.

[0009] In one embodiment, the shell includes a main body and a connecting block; the handle is connected to the main body, the inner cavity is arranged in the main body, and the connecting block is connected to the main body; the connecting block is provided with a plug-in hole, the connecting end of the drill bit is rotatably inserted in the plug-in hole, the inner side wall of the plug-in hole is provided with an annular groove, and the liquid inlet of the injection through hole is connected to the annular groove; the connecting block is also provided with a threaded connecting hole connected to the annular groove, and one end of the injection tube is threadedly inserted into the threaded connecting hole.

[0010] In one embodiment, the filling device also includes a sealing piece and a first position adjustment component; the sealing piece is sleeved on the drill bit, and the sealing piece is used to rotate with the drill bit and be inserted into the inside of the road surface to seal the drill hole; the first position adjustment component is arranged between the sealing piece and the drill bit, and when the drill bit has not drilled into the road surface, the first position adjustment component is used to adjust the position of the sealing piece on the drill bit along the axial direction of the drill bit.

[0011] In one embodiment, the sealing member includes a sealing block and a connecting sleeve, and the drill bit is inserted through the sealing block and the connecting sleeve; the connecting sleeve is connected to the side of the sealing block facing the drilling end, and the outer wall of the connecting sleeve is provided with an external thread, and the connecting sleeve is used to be threadedly inserted into the interior of the road surface.

[0012] In one embodiment, the first position adjustment component includes a hollow rod, an adjusting nut, a threaded rod and a first rotating ring; one end of the hollow rod is fixedly connected to the shell; the adjusting nut has a nut channel, the nut channel includes a threaded hole section and a through hole section connected in succession, one end of the hollow rod is inserted in the through hole section and is rotatably connected to the adjusting nut; the first rotating ring is rotatably connected to the side of the sealing block away from the connecting sleeve, one end of the threaded rod is fixedly connected to the first rotating ring, the threaded rod is passed through the nut channel and inserted into the interior of the hollow rod, and the threaded rod is threadedly connected to the threaded hole section.

[0013] In one embodiment, the filling device also includes a second position adjustment component, which is arranged between the sealing member and the drill bit. When the connecting sleeve is threadedly inserted into the inside of the road surface, the second position adjustment component is used to adjust the position of the sealing member on the drill bit along the axial direction of the drill bit.

[0014] In one of the embodiments, a clearance hole is opened on the blocking block, and the drill bit is inserted into the clearance hole; the second position adjustment device includes a connecting ball, a receiving groove and a first spiral groove; the receiving groove is opened on the inner wall of the clearance hole, and the first spiral groove is arranged around the outer wall of the drill bit, at least part of the structure of the connecting ball is located in the receiving groove, and at least part of the structure of the connecting ball is located in the first spiral groove, and the connecting ball can rotate in the receiving groove and the first spiral groove.

[0015] In one of the embodiments, a mounting ring is fixedly sleeved on the drill bit, and the mounting ring is located between the shell and the sealing block; the second position adjustment device also includes a connecting spring and a second rotating ring, and the second rotating ring is rotatably connected to the side of the sealing block away from the connecting sleeve, and the connecting spring is sleeved on the drill bit, and one end of the connecting spring is fixedly connected to the mounting ring, and the other end is fixedly connected to the second rotating ring.

[0016] In one embodiment, the outer wall of the drill bit is further provided with a second spiral groove, one end of the second spiral groove is connected to the first spiral groove, and the other end extends to the drilling end of the drill bit; the spiral direction of the second spiral groove is opposite to the spiral direction of the first spiral groove.

[0017] The beneficial effects of the present invention are:

[0018] The present invention provides a crack filling device for road and bridge construction. When in use, a worker holds a handle and holds a drill bit against a road surface with cracks, then starts a driving motor to drive the drill bit to rotate, and at the same time applies a force to the filling device to rotate the drill bit and insert it into the road surface to form a borehole. In the above process, it is necessary to pre-connect the end of an injection pipe away from a shell with a water supply device. Water provided by the water supply device flows into the injection through hole through the injection pipe, and flows out from the liquid outlet of the injection through hole (that is, the drilling end of the drill bit) into the borehole. The contact between water and the drill bit can absorb the heat generated by the drill bit drilling, thereby protecting the drill bit. In addition, the water can reduce the friction between the drill bit and the inner wall of the borehole, thereby improving the drilling efficiency.

[0019] When the drilling end of the drill bit is inserted into the bottom of the crack, the drilling operation is stopped. At this time, the end of the injection tube away from the shell is connected to the glue supply device. The glue provided by the glue supply device flows into the injection hole through the injection tube, and flows out from the liquid outlet of the injection hole (that is, the drilling end of the drill bit) to the bottom of the crack, so that glue can be injected into the crack from the bottom of the crack to achieve full filling of the crack.

[0020] To sum up, the above-mentioned crack filling device for road and bridge construction can not only perform drilling operations, but also directly inject glue into the cracks after the drilling operation is completed. Therefore, the staff does not need to switch different devices to perform drilling operations and glue injection operations respectively, so the operation steps of crack filling can be simplified and the work efficiency of crack filling can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a crack filling device for road and bridge construction according to an embodiment of the present invention;

[0022] Figure 2 for Figure 1 The structural schematic diagram of the drill bit of the crack filling device for road and bridge construction shown;

[0023] Figure 3 for Figure 1 The schematic diagram of the state of the road and bridge construction crack filling device drilling into the road surface is shown;

[0024] Figure 4 for Figure 3 a top view of the structure shown;

[0025] Figure 5 for Figure 4 When the sealing member of the crack filling device for road and bridge construction is not inserted into the road surface, Figure 4 The structure shown is a cross-sectional view at AA perspective;

[0026] Figure 6 for Figure 5 An enlarged view of part A in FIG.

[0027] Figure 7 for Figure 5 An enlarged view of part B in FIG.

[0028] Figure 8 for Figure 4 When the sealing member of the crack filling device for road and bridge construction is inserted into the interior of the road surface, Figure 4 The structure shown is a cross-sectional view at AA perspective.

[0029] in:

[0030] 100. Crack filling device for road and bridge construction; 10. Shell; 101. Main body; 102. Connecting block; 103. Plug hole; 104. Annular groove; 105. Threaded connecting hole; 11. Handle; 12. Drill bit; 121. Liquid injection through hole; 1211. Liquid inlet; 1212. Liquid outlet; 122. Connecting end; 123. Drilling end; 124. Mounting ring; 125. Second spiral groove; 13. Liquid injection pipe; 14. Clamping block; 15. Sealing member; 151, sealing block; 1511, giving way hole; 152, connecting sleeve; 16, first position adjustment component; 161, hollow rod; 162, adjusting nut; 163, threaded rod; 164, first rotating ring; 17, second position adjustment component; 171, connecting ball; 172, receiving groove; 173, first spiral groove; 174, connecting spring; 175, second rotating ring; 200, road surface; 300, crack; 400, drilling hole. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] See also Figure 1, Figure 2 and Figure 3 An embodiment of the present application provides a crack filling device 100 for road and bridge construction. The filling device is applied to a road surface 200 having cracks 300 to fill and repair the cracks 300 on the road surface 200 .

[0035] The filling device comprises a housing 10 , a handle 11 , a driving motor (not shown in the figure), a drill bit 12 and a liquid injection tube 13 .

[0036] The housing 10 is provided with an inner cavity (not shown in the figure), and the inner cavity is used to accommodate other components of the filling device.

[0037] The handle 11 is connected to the housing 10 . The handle 11 is substantially in the shape of a long strip and is held by a worker to facilitate the operation of the filling device.

[0038] The driving motor is arranged in the inner cavity, and is used to connect with the drill bit 12 and drive the drill bit 12 to rotate.

[0039] The drill bit 12 is connected to the output shaft of the drive motor. It should be noted that the connection between the drill bit 12 and the output shaft of the drive motor can be a direct connection or a transmission connection achieved through other transmission parts. The specific connection method between the drill bit 12 and the output shaft of the drive motor is not limited.

[0040] The drill bit 12 has a connecting end 122 and a drilling end 123 opposite to each other. The drilling end 123 is a tip structure. The drilling end 123 is used to contact the road surface 200 and drill a hole on the road surface 200. The connecting end 122 is closer to the driving motor than the drilling end 123. The drill bit 12 is provided with a liquid injection through hole 121. The liquid injection through hole 121 has a liquid inlet 1211 and a liquid outlet 1212. The liquid outlet 1212 is located at the drilling end 123. The drill bit 12 is used to drill into the road surface 200 and form a borehole 400 inside the road surface 200.

[0041] One end of the injection tube 13 is connected to the housing 10 and communicates with the injection through hole 121, and the other end is exposed to the outside of the housing 10. The end of the injection tube 13 exposed to the outside of the housing 10 can be connected to a liquid supply device (such as a water supply device or a glue supply device), so that the liquid supply device can inject the liquid (water or glue, etc.) required for filling the crack 300 into the injection through hole 121 through the injection tube 13.

[0042] With the above arrangement, the operation of the worker using the above filling device to fill and repair the crack 300 of the road surface 200 is as follows:

[0043] The staff holds the handle 11 and holds the drilling end 123 of the drill bit 12 against the target position of the road surface 200 having the crack 300 (the "target position" here can be calculated based on the length and depth of the crack 300 detected by other equipment, including the angle between the drill bit 12 and the road surface 200 can also be calculated in advance based on the parameters of the crack 300), and then starts the drive motor to drive the drill bit 12 to rotate, and at the same time applies force to the filling device to rotate the drill bit 12 and insert it into the road surface 200 to form a borehole 400. In the above process, it is necessary to pre-connect the end of the injection tube 13 away from the shell 10 to the water supply device. The water provided by the water supply device flows into the injection hole 121 through the injection tube 13, and flows out from the liquid outlet 1212 of the injection hole 121 (that is, the drilling end 123 of the drill bit 12) into the borehole 400. The contact between the water and the drill bit 12 can absorb the heat generated by the drill bit 12 drilling, thereby protecting the drill bit 12. In addition, the water can also reduce the friction between the drill bit 12 and the inner wall of the borehole 400, thereby improving the drilling efficiency.

[0044] When the drilling end 123 of the drill bit 12 is inserted into the bottom of the crack 300, the drilling operation is stopped. At this time, the end of the injection tube 13 away from the shell 10 is connected to the glue supply device. The glue provided by the glue supply device flows into the injection hole 121 through the injection tube 13, and flows out from the liquid outlet 1212 of the injection hole 121 (that is, the drilling end 123 of the drill bit 12) to the bottom of the crack 300, so that glue can be injected into the crack 300 from the bottom of the crack 300 to achieve full filling of the crack 300.

[0045] In summary, the above-mentioned crack filling device 100 for road and bridge construction can not only perform drilling operations, but also directly inject glue into the crack 300 after the drilling operation is completed. Therefore, the staff does not need to switch different devices to perform drilling operations and glue injection operations respectively, so the operating steps of filling the crack 300 can be simplified and the work efficiency of filling the crack 300 can be improved.

[0046] In some embodiments, the filling device further includes a transmission assembly (not shown in the figure), which is transmission-connected between the drive motor and the drill bit 12 to achieve transmission between the drive motor and the drill bit 12. The transmission assembly includes a driving gear, a driven gear, and a clamping block 14; the driving gear is connected to the output shaft of the drive motor, the driven gear is connected to the clamping block 14, the driven gear is meshed with the driving gear, and the drill bit 12 is penetrated by the clamping block 14 and key-connected with the clamping block 14. The drill bit 12 and the clamping block 14 can be specifically connected by a flat key, a semicircular key, or a wedge key, which is not limited to this.

[0047] Through the above arrangement, when the output shaft of the driving motor rotates, the driving gear rotates to drive the driven gear to rotate, thereby driving the clamping block 14 to rotate. Since the clamping block 14 is key-connected to the drill bit 12, the rotation of the clamping block 14 can drive the drill bit 12 to rotate, thereby realizing the transmission connection between the driving motor and the drill bit 12.

[0048] See also Figures 3 to 6 In some embodiments, the housing 10 includes a main body 101 and a connecting block 102. The main body 101 is the main structure of the housing 10, the handle 11 is connected to the main body 101, the inner cavity is arranged in the main body 101, and the connecting block 102 is connected to the main body 101. The connecting block 102 can be in any shape such as a round cake shape or a cube shape. The connecting block 102 is provided with a plug-in hole 103, and the connecting end 122 of the drill bit 12 is rotatably inserted in the plug-in hole 103. The inner side wall of the plug-in hole 103 is provided with an annular groove 104, the annular groove 104 is connected to the plug-in hole 103, and the liquid inlet 1211 of the liquid injection through hole 121 is connected to the annular groove 104. The connecting block 102 is also provided with a threaded connecting hole 105 connected to the annular groove 104, and one end of the liquid injection tube 13 is threadedly inserted in the threaded connecting hole 105 to realize the connection between the liquid injection tube 13 and the connecting block 102.

[0049] Through the above arrangement, when the end of the liquid injection tube 13 away from the threaded connection hole 105 is connected to a liquid supply device (such as a water supply device or a glue supply device, etc.), the liquid provided by the liquid supply device can flow into the annular groove 104 through the liquid injection tube 13, and then enter the liquid injection through hole 121 through the liquid inlet 1211, and finally be discharged from the drilling end 123 of the drill bit 12 through the liquid outlet 1212. Due to the provision of the annular groove 104, when the drill bit 12 is rotating, although the position of the liquid inlet 1211 changes with the rotation of the drill bit 12, the annular groove 104 can always connect the liquid inlet 1211 with the liquid injection tube 13, so as to ensure that the liquid supply device can stably inject the liquid into the liquid injection through hole 121, so that the filling device can be normally injected.

[0050] See also Figure 1 , Figure 5 and Figure 7 In some embodiments, the filling device further includes a plugging member 15 and a first position adjustment assembly 16. The plugging member 15 is sleeved on the drill bit 12 and is located between the drilling end 123 and the connecting end 122 of the drill bit 12. The plugging member 15 is used to rotate with the drill bit 12 and be inserted into the inside of the road surface 200 to plug the end of the drill hole 400.

[0051] The first position adjustment component 16 is disposed between the blocking member 15 and the drill bit 12 . When the drill bit 12 has not drilled into the road surface 200 , the first position adjustment component 16 is used to adjust the position of the blocking member 15 on the drill bit 12 along the axial direction of the drill bit 12 .

[0052] Through the above-mentioned arrangement, the staff can pre-calculate the depth to which the drill bit 12 needs to drill into the pavement 200 according to the parameters of the crack 300, so that before the drilling operation, the sealing member 15 can be adjusted to a suitable position through the first position adjustment component 16, so that when the drilling end 123 of the drill bit 12 is inserted into the bottom of the crack 300, the sealing member 15 can be rotated and inserted into the pavement 200 to seal the end of the borehole 400. Since the plugging member 15 is provided, when the plugging member 15 contacts the road surface 200, the plugging member 15 can prevent the debris generated during the drilling process from being discharged from the borehole 400, thereby compacting the debris to increase the friction between the drill bit 12 and the road surface 200, thereby slowing down the rate at which the drill bit 12 continues to drill downward, so as to avoid the drill bit 12 from drilling through the bottom of the crack 300 due to excessive penetration speed; and, when the plugging member 15 is inserted into the road surface 200, the plugging member 15 can also improve the stability of the drill bit 12 in the borehole 400, and the plugging member 15 can overcome the reaction force generated during the glue injection process, thereby avoiding the liquid outlet 1212 of the injection through hole 121 from escaping from the crack 300 due to the above-mentioned reaction force, so that stable glue injection into the crack 300 can be achieved and the stability of filling and injection can be improved.

[0053] See also Figure 5 , Figure 7 as well as Figure 8 In some embodiments, the blocking member 15 includes a blocking block 151 and a connecting sleeve 152. The blocking block 151 is roughly in the shape of a round cake, the connecting sleeve 152 is in the shape of a cylinder, and the drill bit 12 is inserted through the blocking block 151 and the connecting sleeve 152. The connecting sleeve 152 is connected to the side of the blocking block 151 facing the drilling end 123, and the outer wall of the connecting sleeve 152 is provided with an external thread, and the connecting sleeve 152 is used to be threadedly plugged into the inside of the road surface 200. The material of the connecting sleeve 152 can be cemented carbide, high-speed steel, carbon tool steel, etc., which has a good wall-breaking effect on the road surface 200.

[0054] Through the above arrangement, when the drill bit 12 is just rotated and inserted into the road surface 200, the plugging member 15 rotates synchronously with the drill bit 12. As the drill bit 12 goes deeper and deeper, until the connecting sleeve 152 contacts the road surface 200, the connecting sleeve 152 will be spirally inserted into the road surface 200, thereby achieving the connection between the plugging member 15 and the road surface 200. Since the drill bit 12 is inserted into the connecting sleeve 152, the diameter of the connecting sleeve 152 is larger than the diameter of the drill bit 12, so the diameter of the connecting sleeve 152 is also larger than the diameter of the borehole 400 generated by the drill bit 12. Therefore, after the connecting sleeve 152 is inserted into the road surface 200, it can surround the borehole 400, and cooperate with the connecting block 102 to achieve the blocking of the end of the borehole 400.

[0055] See also Figure 1 , Figure 5 as well as Figure 7 In some embodiments, the first position adjustment assembly 16 includes a hollow rod 161, an adjustment nut 162, a threaded rod 163, and a first rotating ring 164. The hollow rod 161 is a rod-shaped structure with a hollow interior. One end of the hollow rod 161 is fixedly connected to the housing 10, and the length direction of the hollow rod 161 is parallel to the axial direction of the drill bit 12. The adjusting nut 162 has a nut channel (not shown in the figure), and the nut channel includes a threaded hole section and a through hole section connected in succession. One end of the hollow rod 161 is inserted into the through hole section and is rotatably connected to the adjusting nut 162. The first rotating ring 164 is rotatably connected to the side of the blocking block 151 away from the connecting sleeve 152. For example, the first rotating ring 164 can be movably embedded in the surface of the blocking block 151 away from the connecting sleeve 152, or the first rotating ring 164 can be connected to the surface of the blocking block 151 away from the connecting sleeve 152 through an annular slide rail. One end of the threaded rod 163 is fixedly connected to the first rotating ring 164, the threaded rod 163 is inserted into the nut hole and inserted into the hollow rod 161, and the threaded rod 163 is threadedly connected to the threaded hole section. The first rotating ring 164 is used to realize the rotation connection between the threaded rod 163 and the blocking member 15 to prevent the hollow rod 161 from hindering the blocking member 15 from rotating synchronously with the drill bit 12.

[0056] Through the above arrangement, when the staff rotates the adjustment nut 162, the threaded rod 163 drives the plugging member 15 to move along the axial direction of the drill bit 12, thereby changing the distance between the plugging member 15 and the drilling end 123 of the drill bit 12, so that when the drilling end 123 of the drill bit 12 is inserted into the bottom of the crack 300, the connecting sleeve 152 can be screwed into the inside of the road surface 200 to achieve the plugging of the borehole 400. The above arrangement enables the filling device to be applied to the road surface 200 with cracks 300 of different depths, thereby broadening the use scenarios of the filling device and meeting diverse filling needs.

[0057] In this embodiment, two groups of hollow rods 161, adjusting nuts 162 and threaded rods 163 are provided correspondingly, which can further improve the stability and reliability of the first position adjustment component 16 in adjusting the position of the blocking member 15. In other embodiments, three groups, four groups or any other groups of hollow rods 161, adjusting nuts 162 and threaded rods 163 can also be provided correspondingly, and this is not limited.

[0058] See also Figure 1 , Figure 5 as well as Figure 7In some embodiments, the filling device also includes a second position adjustment component 17, which is arranged between the sealing component 15 and the drill bit 12. When the connecting sleeve 152 is threadedly inserted into the interior of the pavement 200, the second position adjustment component 17 is used to adjust the position of the sealing component 15 on the drill bit 12 along the axial direction of the drill bit 12.

[0059] Since the plugging member 15 in this embodiment is used to plug the drill hole 400, in order to ensure the plugging effect, the plugging member 15 is screwed into the inside of the road surface 200 by means of the connecting sleeve 152, so the connecting portion between the connecting sleeve 152 and the road surface 200 (the thicker hole drilled by the connecting sleeve 152 in the road surface 200) is threaded, and the screwing depth of the connecting sleeve 152 in the road surface 200 per unit time is determined by the speed of the driving motor and the pitch of the external thread on the connecting sleeve 152, so the screwing depth of the connecting sleeve 152 in the road surface 200 per unit time is fixed; while the drill hole 400 mainly depends on the staff to drill the road surface 200 applies downward pressure, so the extension length of the borehole 400 per unit time (i.e., the insertion depth of the drill bit 12 in the road surface 200) is determined by the downward pressure of the staff. During the actual operation, the downward pressure of the staff is unstable, so it is impossible to ensure that the screwing speed of the drill bit 12 and the connecting sleeve 152 relative to the road surface 200 is consistent. Therefore, when the screwing depth of the drill bit 12 and the connecting sleeve 152 relative to the road surface 200 per unit time is different, the sealing member 15 and the drill bit 12 will move relative to each other. At this time, the second position adjustment component 17 is required to realize the adjustment of the position of the sealing member 15 on the drill bit 12 along the axial direction of the drill bit 12.

[0060] See also Figure 1 , Figure 5 as well as Figure 7 In some embodiments, a clearance hole 1511 is provided on the blocking block 151, and the drill bit 12 is inserted into the clearance hole 1511. The second position adjustment device includes a connecting ball 171, a receiving groove 172, and a first spiral groove 173. The receiving groove 172 is provided on the inner side wall of the clearance hole 1511, and the first spiral groove 173 is arranged around the outer side wall of the drill bit 12. At least part of the structure of the connecting ball 171 is located in the receiving groove 172, and at least part of the structure of the connecting ball 171 is located in the first spiral groove 173. The connecting ball 171 can rotate in the receiving groove 172 and the first spiral groove 173.

[0061] Through the above-mentioned arrangement, before the sealing member 15 contacts the road surface 200, the sealing member 15 rotates synchronously with the drill bit 12. After the connecting sleeve 152 is inserted into the interior of the road surface 200, since the screwing depth of the connecting sleeve 152 and the drill bit 12 relative to the road surface 200 cannot be kept consistent per unit time, there will be relative movement between the sealing member 15 and the drill bit 12. During the above-mentioned movement, the connecting ball 171 will move along the first spiral groove 173, so the connecting ball 171 will rotate in the accommodating groove 172 and the first spiral groove 173 at the same time to ensure that the sealing member 15 moves stably along the axial direction of the drill bit 12.

[0062] In some embodiments, a mounting ring 124 is fixedly sleeved on the drill bit 12, and the mounting ring 124 is located between the housing 10 and the blocking block 151. The second position adjustment device also includes a connecting spring 174 and a second rotating ring 175, and the second rotating ring 175 is rotatably connected to the side of the blocking block 151 away from the connecting sleeve 152. For example, the second rotating ring 175 can be movably embedded in the surface of the blocking block 151 away from the connecting sleeve 152, or the second rotating ring 175 can be connected to the surface of the blocking block 151 away from the connecting sleeve 152 through an annular slide rail. The connecting spring 174 is sleeved on the drill bit 12, and one end of the connecting spring 174 is fixedly connected to the mounting ring 124, and the other end is fixedly connected to the second rotating ring 175. The second rotating ring 175 is used to realize the rotational connection between the connecting spring 174 and the blocking member 15, so as to avoid the connecting spring 174 hindering the blocking member 15 from rotating synchronously with the drill bit 12.

[0063] Through the above-mentioned arrangement, when the sealing member 15 moves toward the connecting end 122 close to the drill bit 12, the sealing member 15 will squeeze the connecting spring 174. The elastic force generated by the connecting spring 174 acts on the sealing member 15, so that the sealing member 15 can be pressed against the road surface 200, thereby facilitating the stable connection between the sealing member 15 and the road surface 200, so as to stably seal the drill hole 400.

[0064] See also Figure 1 and Figure 2 In some embodiments, the outer side wall of the drill bit 12 is further provided with a second spiral groove 125, one end of the second spiral groove 125 is connected to the first spiral groove 173, and the other end extends to the drilling end 123 of the drill bit 12. The spiral direction of the second spiral groove 125 is opposite to that of the first spiral groove 173.

[0065] Through the above arrangement, during the drilling process, when the drilling end 123 of the drill bit 12 is just inserted into the inside of the road surface 200, the debris generated by the drill bit 12 can be discharged from the borehole 400 through the first spiral groove 173, so that the drill bit 12 continues to go deeper. When the connecting sleeve 152 of the plugging member 15 is spirally inserted into the inside of the road surface 200, the plugging member 15 will block the end of the borehole 400. At this time, the debris that continues to be generated by the drill bit 12 cannot be discharged from the borehole 400. The debris is continuously accumulated and squeezed in the borehole 400, thereby increasing the friction between the drill bit 12 and the drill bit 12, which is conducive to slowing down the speed of the drill bit 12 and continuing to go deeper, thereby preventing the drill bit 12 from drilling through the bottom of the gap 300 due to excessively fast penetration speed. In addition, since the debris is easy to gather at the location of the plugging member 15, the debris can also cooperate with the plugging member 15 to improve the sealing effect of the borehole 400, thereby further improving the drilling efficiency of the drill bit 12.

[0066] In summary, the embodiment of the present application provides a crack filling device 100 for road and bridge construction. The specific operation of workers using the above filling device to fill the crack 300 of the repaired road surface 200 is as follows:

[0067] Before the drilling operation begins, the initial drilling position of the drill bit 12 on the road surface 200, the drilling direction of the drill bit 12, and the distance between the plugging piece 15 and the drilling end 123 of the drill bit 12 are calculated based on the parameters of the crack 300 to be repaired (such as depth, width, direction, etc.), and the end of the injection tube 13 away from the housing 10 is connected to the water supply device. The staff can adjust the distance between the plugging piece 15 and the drilling end 123 of the drill bit 12 by rotating the adjustment nut 162, in order to ensure that when the drilling end 123 of the drill bit 12 is inserted into the bottom of the crack 300, the plugging piece 15 can be inserted into the road surface 200 with at least a part of its structure to block the end of the borehole 400.

[0068] At the beginning of the drilling operation, the worker holds the handle 11 and places the drilling end 123 of the drill bit 12 against the target position of the road surface 200 with the crack 300 (i.e., the above-mentioned "initial drilling position of the drill bit 12 on the road surface 200"), then starts the driving motor to drive the drill bit 12 to rotate, and at the same time applies a force to the filling device to rotate the drill bit 12 and insert it into the road surface 200 to form the borehole 400. In the above process, the water provided by the water supply device flows into the injection hole 121 through the injection pipe 13, and flows out from the liquid outlet 1212 of the injection hole 121 (i.e., the drilling end 123 of the drill bit 12) into the borehole 400. The water in contact with the drill bit 12 can absorb the heat generated by the drill bit 12 during drilling, thereby protecting the drill bit 12. In addition, the water can also reduce the friction between the drill bit 12 and the inner wall of the borehole 400, thereby improving the drilling efficiency.

[0069] In the initial stage when the drilling end 123 of the drill bit 12 is inserted into the road surface 200, the sealing member 15 rotates synchronously with the drill bit 12. As the drill bit 12 goes deeper, when the connecting sleeve 152 of the sealing member 15 is spirally inserted into the road surface 200, since the insertion depth of the sealing member 15 and the drill bit 12 relative to the road surface 200 cannot be kept consistent per unit time, the sealing member 15 will move relative to the drill bit 12 along the axial direction of the drill bit 12 through the connecting ball 171, so that the sealing member 15 and the drill bit 12 can compensate for each other's feed speeds.

[0070] When the drilling end 123 of the drill bit 12 is inserted into the bottom of the crack 300, the drilling operation is stopped. At this time, the sealing member 15 seals the end of the borehole 400. The staff connects the end of the injection tube 13 away from the shell 10 to the glue supply device. The glue provided by the glue supply device flows into the injection hole 121 through the injection tube 13, and flows out from the liquid outlet 1212 of the injection hole 121 (that is, the drilling end 123 of the drill bit 12) to the bottom of the crack 300, so that glue can be injected into the crack 300 from the bottom of the crack 300 to achieve full filling of the crack 300.

[0071] The road and bridge construction crack filling device 100 provided in the embodiment of the present application has the following beneficial effects:

[0072] Since the crack filling device 100 for road and bridge construction can perform both drilling operations and directly inject glue into the crack 300 after the drilling operation is completed, the staff does not need to switch different devices to perform drilling operations and glue injection operations respectively, so the operation steps of filling the crack 300 can be simplified and the work efficiency of filling the crack 300 can be improved. In addition, since the plugging member 15 is provided, the plugging member 15 can overcome the reaction force generated during the glue injection process after being connected to the road surface 200, thereby preventing the liquid outlet 1212 of the injection through hole 121 from accidentally falling out from the inside of the crack 300, so there is no need to inject glue into the crack 300 multiple times from multiple different positions, so the filling and repair of the crack 300 can be completed by only a single drilling and glue injection, thereby improving the work efficiency.

[0073] Furthermore, after the connecting sleeve 152 is rotated and inserted into the interior of the pavement 200, the sealing member 15 can seal the end of the borehole 400. Therefore, the debris in the borehole 400 cannot be discharged from the borehole 400 through the second spiral groove 125 of the drill bit 12. Under the joint action of the debris and the sealing member 15, the debris accumulated in the second spiral groove 125 can be compressed and tightened to increase the friction between the drill bit 12 and the pavement 200, thereby slowing down the speed at which the drill bit 12 continues to drill downward. This can not only prevent the drill bit 12 from drilling through the bottom of the crack 300 due to excessive penetration speed, but also can minimize the accidental escape of the liquid outlet 1212 of the injection hole 121 from the crack 300 during the injection process, thereby improving the stability of the injection.

[0074] Furthermore, due to the provision of the second position adjustment component 17, when the connecting sleeve 152 of the sealing member 15 cannot keep consistent with the insertion speed of the drill bit 12 after being spirally inserted into the pavement 200, the sealing member 15 can be moved up and down relative to the drill bit 12 along the axial direction of the drill bit 12 through the connecting ball 171, so that the drill bit 12 and the sealing member 15 can compensate for each other's feed speeds to ensure smooth drilling and sealing operations.

[0075] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications 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 crack filling device for road and bridge construction, characterized in that: The filling device is applied to a road surface (200) having cracks (300), and the filling device comprises: A housing (10) having an inner cavity; A handle (11) connected to the housing (10); A driving motor is disposed in the inner cavity; A drill bit (12) connected to the output shaft of the drive motor; the drill bit (12) has a connecting end (122) and a drilling end (123) opposite to each other, the connecting end (122) being closer to the drive motor than the drilling end (123); the drill bit (12) is provided with a liquid injection through hole (121), the liquid injection through hole (121) having a liquid inlet (1211) and a liquid outlet (1212), the liquid outlet (1212) being located at the drilling end (123); the drill bit (12) is used to drill into the road surface (200) and generate a borehole (400) inside the road surface (200); a liquid injection tube (13), one end of the liquid injection tube (13) being connected to the housing (10) and communicating with the liquid injection through hole (121), and the other end of the liquid injection tube (13) being exposed to the outside of the housing (10); The filling device further comprises a blocking member (15) and a first position adjustment assembly (16); the blocking member (15) is sleeved on the drill bit (12), and the blocking member (15) is used to rotate with the drill bit (12) and be inserted into the inside of the road surface (200) to block the drill hole (400); The first position adjustment component (16) is arranged between the sealing member (15) and the drill bit (12); when the drill bit (12) has not drilled into the road surface (200), the first position adjustment component (16) is used to adjust the position of the sealing member (15) on the drill bit (12) along the axial direction of the drill bit (12).

2. The road and bridge construction crack filling device according to claim 1, characterized in that: The filling device further comprises a transmission assembly, which is transmission-connected between the drive motor and the drill bit (12); the transmission assembly comprises a driving gear, a driven gear and a clamping block (14); the driving gear is connected to the output shaft of the drive motor, the driven gear is connected to the clamping block (14), the driven gear is meshed with the driving gear, and the drill bit (12) is inserted into the clamping block (14) and is key-connected to the clamping block (14).

3. The road and bridge construction crack filling device according to claim 1, characterized in that: The housing (10) comprises a main body (101) and a connecting block (102); the handle (11) is connected to the main body (101), the inner cavity is arranged in the main body (101), and the connecting block (102) is connected to the main body (101); the connecting block (102) is provided with a plug-in hole (103), a connecting end (122) of the drill bit (12) is rotatably inserted in the plug-in hole (103), an inner side wall of the plug-in hole (103) is provided with an annular groove (104), and a liquid inlet (1211) of the liquid injection through hole (121) is connected to the annular groove (104); the connecting block (102) is also provided with a threaded connecting hole (105) connected to the annular groove (104), and one end of the liquid injection tube (13) is threadedly inserted in the threaded connecting hole (105).

4. The road and bridge construction crack filling device according to claim 1, characterized in that: The sealing member (15) comprises a sealing block (151) and a connecting sleeve (152), and the drill bit (12) is inserted into the sealing block (151) and the connecting sleeve (152); the connecting sleeve (152) is connected to a side of the sealing block (151) facing the drilling end (123), and an outer wall of the connecting sleeve (152) is provided with an external thread, and the connecting sleeve (152) is used for being threadedly inserted into the interior of the road surface (200).

5. The road and bridge construction crack filling device according to claim 4, characterized in that: The first position adjustment component (16) comprises a hollow rod (161), an adjusting nut (162), a threaded rod (163) and a first rotating ring (164); one end of the hollow rod (161) is fixedly connected to the shell (10); the adjusting nut (162) has a nut hole, and the nut hole comprises a threaded hole section and a through hole section which are connected in succession. One end of the hollow rod (161) is inserted into the through hole section and is rotatably connected to the adjusting nut (162); the first rotating ring (164) is rotatably connected to a side of the blocking block (151) away from the connecting sleeve (152), one end of the threaded rod (163) is fixedly connected to the first rotating ring (164), the threaded rod (163) is passed through the nut hole and inserted into the interior of the hollow rod (161), and the threaded rod (163) is threadedly connected to the threaded hole section.

6. The road and bridge construction crack filling device according to claim 4, characterized in that: The filling device also includes a second position adjustment component (17), which is arranged between the sealing member (15) and the drill bit (12). When the connecting sleeve (152) is threadedly inserted into the interior of the road surface (200), the second position adjustment component (17) is used to adjust the position of the sealing member (15) on the drill bit (12) along the axial direction of the drill bit (12).

7. The road and bridge construction crack filling device according to claim 6, characterized in that: The blocking block (151) is provided with a clearance hole (1511), and the drill bit (12) is inserted into the clearance hole (1511); The second position adjustment device comprises a connecting ball (171), a receiving groove (172) and a first spiral groove (173); the receiving groove (172) is opened on the inner wall of the clearance through hole (1511), and the first spiral groove (173) is arranged around the outer wall of the drill bit (12); at least part of the structure of the connecting ball (171) is located in the receiving groove (172), and at least part of the structure of the connecting ball (171) is located in the first spiral groove (173); the connecting ball (171) can rotate in the receiving groove (172) and the first spiral groove (173).

8. The road and bridge construction crack filling device according to claim 7, characterized in that: The fixing sleeve on the drill bit (12) is provided with a mounting ring (124), and the mounting ring (124) is located between the housing (10) and the blocking block (151); The second position adjustment device also includes a connecting spring (174) and a second rotating ring (175). The second rotating ring (175) is rotatably connected to a side of the blocking block (151) facing away from the connecting sleeve (152). The connecting spring (174) is sleeved on the drill bit (12). One end of the connecting spring (174) is fixedly connected to the mounting ring (124), and the other end is fixedly connected to the second rotating ring (175).

9. The road and bridge construction crack filling device according to claim 7, characterized in that: The outer wall of the drill bit (12) is also provided with a second spiral groove (125), one end of the second spiral groove (125) is connected to the first spiral groove (173), and the other end extends to the drilling end (123) of the drill bit (12); the spiral direction of the second spiral groove (125) is opposite to the spiral direction of the first spiral groove (173).

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