Cement concrete pavement core hole repairing device and method
The use of core drilling repair equipment for cement concrete pavement has solved the problems of difficult debris removal, unstable interface, and low efficiency in core drilling repair, achieving efficient and high-quality repair results and ensuring that the road surface can be quickly restored to traffic.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- MCC SOUTHERN CITY CONSTR ENG TECH CO LTD
- Filing Date
- 2024-03-18
- Publication Date
- 2026-07-03
AI Technical Summary
Existing technologies for core hole repair of cement concrete pavements suffer from problems such as difficulty in cleaning debris, poor interface contact, difficulty in guaranteeing the quality of repair materials, and low efficiency.
A cement concrete pavement core hole repair device is adopted, including a vehicle body, a displacement device, a mixing device, a storage bin, a lifting device, a roughening device, and a hole cleaning device, which realizes on-site mixing of high-quality concrete, roughening of the inner wall of the hole, cleaning of debris, and efficient filling of the core hole.
It improved repair efficiency and quality, enhanced the bonding between new and old concrete, reduced labor intensity, and ensured that the road surface could be quickly restored to traffic.
Smart Images
Figure CN118166625B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the quality inspection of cement concrete pavement, and more specifically to a device and method for repairing core holes in cement concrete pavement. Background Technology
[0002] Key indicators for inspecting the construction quality of cement concrete pavements include flexural strength, slab thickness, smoothness, longitudinal elevation, cross slope, joint depth, curb straightness and height, and height difference between adjacent slabs. Among these, flexural strength and slab thickness are critical indicators of concrete quality. The most common method for determining concrete strength and thickness is core sampling, which is a direct, reliable, and accurate method for inspecting concrete quality. For newly constructed concrete pavements, flexural strength and slab thickness must meet the specifications before proceeding to the next construction step. After the road has been opened to traffic, if concrete quality problems arise due to poor design, materials, construction, or maintenance, core sampling is also the most effective and direct method for detecting concrete quality.
[0003] Core sampling is a semi-destructive on-site testing method. After core sampling, many core holes are left, which can cause local damage to the concrete. It is necessary to quickly fill the core holes on the road surface and restore traffic in a timely manner.
[0004] Currently, the common method for repairing core holes in cement concrete pavements is to manually fill them with filler material. However, this method has the following main problems:
[0005] 1. During the core sampling process, a lot of debris (wastewater and waste residue) will be left in the hole. It is impossible to remove the wastewater and waste residue in the hole manually. If repair materials are added directly into the hole, the bottom of the core hole is easily damaged later.
[0006] 2. After core sampling, the inner wall of the hole is smooth and straight. If the repair material is added directly into the hole, the interface between the hole and the original concrete slab will not be firm. In the future, the interface between the hole and the old concrete slab will easily loosen, causing the road surface to be damaged again.
[0007] 3. Currently, the repair materials for filling potholes are made by manually pouring cement, fine aggregate mixture, water, etc. into a bucket on site and mixing them manually. The manual mixing of concrete relies mainly on experience, which makes it difficult to ensure that the concrete mix ratio is reasonable and the mixture is uniform, and thus makes it difficult to guarantee the quality of the repair materials.
[0008] 4. Manual repair is inefficient and labor-intensive, and cannot quickly fill the voids in the asphalt pavement. Summary of the Invention
[0009] The purpose of this invention is to provide a device and method for repairing core holes in cement concrete pavements. This device can mix high-quality concrete on-site and fill core holes, roughen the inner wall of the core hole and clean the debris inside the core hole before filling, and has high filling efficiency, good filling quality and low labor intensity.
[0010] The technical solution adopted in this invention is:
[0011] A core hole repair device for cement concrete pavement includes a vehicle body (1) capable of walking and turning. The vehicle body (1) is equipped with a shifting device (2), a mixing device (3), a storage bin (4), a lifting device (5), a roughening device (6), and a hole cleaning device (7). The shifting device (2) includes a rotating platform one (24) and a rotating platform two (25) that are distributed vertically and staggered. One end of each platform is the center of rotation, and the other end is located at the edge of the vehicle body (1). The two platforms are linked together, and when one platform rotates, the other platform rotates in the opposite direction. The mixing device (3) is used to mix the repair material and includes a mixing bin (38) installed on the rotating platform one (24) and extending out of the vehicle body (1), a mixing bin drive mechanism for driving the mixing bin (38) to rotate, a mixer (35) located in the mixing bin (38), a mixer drive mechanism for driving the mixer (35) to rotate, a discharge port (39) located at the bottom of the mixing bin (38) and capable of being opened and closed, and a mixing bin drive motor. Both the structure and the agitator drive mechanism can operate at any position on the rotating platform (24); the storage bin (4) is used to store various repair materials separately; the lifting device (5) includes a vertical guide rod (51) installed on the lower front end of the rotating platform (25), a lifting platform (52) that is vertically mounted on the vertical guide rod and extends out of the vehicle body (1), and a lifting drive mechanism (53) for driving the lifting platform (52) to lift; the roughening device (6) is used to roughen the inner wall of the core hole, and is installed on the lifting platform (52), including a downward-pointing roughening blade (62) and a roughening motor (61) that drives the roughening blade (62); the hole cleaning device (7) is used to clean the debris in the core hole, including a suction port (71) and its pump (72) installed on the lifting platform (52), a waste bin (75) installed on the vehicle body (1), and a suction pipe (74) connecting the pump (72) and the waste bin (75), the suction port (71) pointing downward and retractable.
[0012] Furthermore, the vehicle body (1) includes a base (11), with wheels (17) distributed around the lower part of the base (11). The wheels (17) are driven by a walking motor (18). The shifting device (2) is located at the front of the base (11), the waste bin (75) is located in the middle of the base (11), and the storage bin (4) is located at the rear of the base (11). The rear end of the base (11) is provided with a handle for pushing the vehicle. The handle is provided with a start-stop controller (15) for controlling the start and stop of the vehicle body (1) and a brake controller (16) for controlling the braking of the vehicle body (1).
[0013] Furthermore, in the transposition device (2), the first rotating platform (24) is fixed on the rotating shaft (23) and rotates around the rotating shaft (23). The second rotating platform (25) is fixed on the sleeve (22) and rotates around the sleeve (22). The sleeve (22) is loosely fitted on the rotating shaft (23). Both the sleeve (22) and the rotating shaft (23) can be rotatably mounted on the vehicle body (1). The sleeve (22) and the rotating shaft (23) are connected by a gear transmission mechanism (21) to achieve that when they are linked together, their rotation directions are opposite.
[0014] Furthermore, the gear transmission mechanism (21) includes a gear one (211) fixed on the sleeve (22), a gear two (212) meshing with the gear one (211), a gear three (213) sharing an intermediate shaft one (216) with the gear two (212), a gear four (214) meshing with the gear three (213) and fixed on an intermediate shaft two (217), and a gear five (215) meshing with the gear four (214) and fixed on a rotating shaft (23); the intermediate shaft one (216) and the intermediate shaft two (217) can both be rotatably mounted on the vehicle body.
[0015] Furthermore, in the gear transmission mechanism (21), the two ends of intermediate shaft one (216) and intermediate shaft two (217), the lower end of the rotating shaft (23), and the area near the lower end of the sleeve (22) are fitted with empty sleeves (218); the lower ends of intermediate shaft one (216) and intermediate shaft two (217), and the lower end of the rotating shaft (23) are connected by a limiting rod (219) to form a triangular stable structure; the upper ends of intermediate shaft one (216) and intermediate shaft two (217), and the area near the lower end of the sleeve (218) are connected by a limiting rod (219) to form a triangular stable structure.
[0016] Furthermore, the mixing chamber drive mechanism includes a mixing chamber motor (36) mounted on a rotating platform (24) and a pair of meshing bevel gears (37), wherein the driving bevel gear (37) is driven by the mixing chamber motor (36) and the driven bevel gear (37) is mounted on the mixing chamber (38).
[0017] Furthermore, the agitator drive mechanism includes an agitator motor (31), a belt drive assembly one (32), a transfer shaft assembly (33), and a belt drive assembly two (34) connected in sequence. The agitator motor (31) is raised and mounted on the vehicle body (1), the transfer shaft assembly (33) is mounted on the rotation center of the rotating platform one (24), and the input end of the agitator (35) extends out of the mixing chamber (38) and is connected to the output end of the belt drive assembly two (34).
[0018] Furthermore, the agitator (35) includes a stirring shaft (351) and multiple layers of stirring blades (352) of different heights. The internal space of the stirring chamber (38) is cone-shaped with a larger upper part and a smaller lower part. The size of the stirring blades (352) gradually decreases from top to bottom.
[0019] Furthermore, the vertical guide rod (51) is provided with a rack along the line, the lifting platform (52) is sleeved on the vertical guide rod (51) and meshes with it through the internal gear, the lifting drive mechanism (53) includes a rocker assembly, the rocker assembly is installed on the lifting platform (52) and is used to drive the gear inside the lifting platform (52) to move.
[0020] A method for repairing core holes in cement concrete pavement, using the aforementioned cement concrete pavement core hole repair equipment, includes the following steps:
[0021] S1, Vehicle (1) travels to the construction site;
[0022] S2. On-site mixing of concrete: Put all kinds of repair materials in the storage bin (4) into the mixing bin (38) according to the concrete mix ratio, turn on the mixing bin drive mechanism and the mixer drive mechanism to make the mixing bin (38) and the mixer (35) rotate in opposite directions to fully mix the repair materials. After the specified mixing time and quality requirements are met, turn off the mixer drive mechanism and adjust the mixing bin drive mechanism to make the mixer (35) stop rotating and the mixing bin (38) rotate at a reduced speed to prevent concrete segregation.
[0023] S3. Roughening the inner wall of the core hole: Operate the rotating platform one (24) or rotating platform two (25), and adjust the position of the vehicle body (1) so that the roughening blade (62) is aligned with the core hole. Turn on the roughening motor (61) to make the roughening blade (62) rotate, shorten the suction port (71), operate the lifting drive mechanism (53) to make the rotating roughening blade (62) enter the core hole downward and extend downward a certain distance, while ensuring that the suction port (71) does not interfere. Turn off the roughening motor (61), operate the lifting drive mechanism (53) to make the roughening blade (62) extend upward out of the core hole;
[0024] S4. Clean the debris in the core hole: Operate the rotating platform one (24) or rotating platform two (25), and adjust the position of the vehicle body (1) so that the suction port (71) is aligned with the core hole. Extend the suction port (71), operate the lifting drive mechanism (53) to make the suction port (71) enter the bottom of the core hole downwards, while ensuring that the roughening blade (62) does not interfere. Turn on the pump (72) to suck the debris in the core hole to the waste bin (75). After cleaning, turn off the pump (72) and operate the lifting drive mechanism (53) to make the suction port (71) extend upwards out of the core hole.
[0025] S5. Filling the core hole: Operate rotating platform one (24) or rotating platform two (25), and adjust the position of the vehicle body (1) so that the discharge port (39) is aligned with the core hole. Turn on the agitator drive mechanism to make the agitator (35) rotate, and open the discharge port (39) to let the repair material fall into the core hole. After filling, close the discharge port (39) and the agitator drive mechanism, smooth the core hole and perform maintenance.
[0026] S6. For each subsequent core hole, roughening, cleaning, and filling are carried out in sequence.
[0027] The beneficial effects of this invention are:
[0028] This equipment can mix high-quality concrete on-site and fill drilled holes. It can roughen the inner wall of the drilled holes and clean the debris inside the drilled holes before filling. It has high filling efficiency, facilitates timely restoration of traffic, and has good filling quality, which can restore the original road surface performance to the greatest extent. It also has low labor intensity and is easy to implement and promote. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the structure of the cement concrete pavement core hole repair equipment in an embodiment of the present invention. Figure 1 .
[0030] Figure 2 This is a schematic diagram of the structure of the cement concrete pavement core hole repair equipment in an embodiment of the present invention. Figure 2 .
[0031] Figure 3 This is a schematic diagram of the vehicle body in an embodiment of the present invention.
[0032] Figure 4 This is a schematic diagram of the transposition device in an embodiment of the present invention.
[0033] Figure 5 This is a schematic diagram of the gear transmission mechanism in an embodiment of the present invention.
[0034] Figure 6 This is a schematic diagram of the stirring device in an embodiment of the present invention.
[0035] Figure 7 This is a schematic diagram of the installation of the mixing chamber and the agitator in an embodiment of the present invention.
[0036] Figure 8 This is a schematic diagram of the structure of the storage bin in an embodiment of the present invention.
[0037] Figure 9 This is a schematic diagram of the installation of the lifting device in an embodiment of the present invention.
[0038] Figure 10 This is a schematic diagram of the installation of the roughening device in an embodiment of the present invention.
[0039] Figure 11 This is a schematic diagram of the hole cleaning device in an embodiment of the present invention. Detailed Implementation
[0040] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.
[0041] In the description of this invention, it should be understood that the terms "bottom," "top," "middle," "one end," "the other end," "both ends," "top," "interior," "front," and "middle," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "component one," "component two," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0042] The invention will now be further described with reference to the accompanying drawings.
[0043] Example 1
[0044] This embodiment discloses a core drilling repair device for cement concrete pavement, such as... Figures 1 to 11 As shown, it includes a vehicle body 1 and a shifting device 2, a mixing device 3, a storage bin 4, a lifting device 5, a roughening device 6, and a hole cleaning device 7 mounted on the vehicle body 1; wherein:
[0045] Vehicle body 1 can move and turn, such as Figures 1 to 3 As shown;
[0046] The switching device 2 includes two staggered rotating platforms, a first rotating platform 24 and a second rotating platform 25, which are distributed vertically. One end of each platform is a center of rotation, and the other end is located at the edge of the vehicle body 1. The two platforms are linked together, and when one platform rotates, the other rotates in the opposite direction. Figure 1 , Figure 2 and Figure 4 As shown;
[0047] The mixing device 3 is used to mix repair materials and includes a mixing chamber 38 mounted on the rotating platform 24 and extending out of the vehicle body 1, a mixing chamber drive mechanism for driving the mixing chamber 38 to rotate, an agitator 35 located inside the mixing chamber 38, an agitator drive mechanism for driving the agitator 35 to rotate, and a discharge port 39 located at the bottom of the mixing chamber 38 that can be opened and closed. Both the mixing chamber drive mechanism and the agitator drive mechanism can operate at any position on the rotating platform 24. Figure 1 , Figure 2 and Figure 6 As shown; for ease of observation, the structure of the mixing chamber 38 installed on the rotating platform 24 is not shown in the figure. In fact, this type of rotatable installation method is quite common. For example, a flange can be set on the mixing chamber 38, and a thrust bearing can be installed on the lower side of the flange. The thrust bearing is installed on the rotating platform 24 through the bearing seat.
[0048] Storage bin 4 is used to store various repair materials separately, such as Figure 1 , Figure 2 and Figure 8 As shown;
[0049] The lifting device 5 includes a vertical guide rod 51 installed on the lower front end of the rotating platform 25, a lifting platform 52 that is vertically mounted on the vertical guide rod and extends out of the vehicle body 1, and a lifting drive mechanism 53 for driving the lifting platform 52 to rise and fall. Figure 1 , Figure 2 and Figure 9 As shown;
[0050] The roughening device 6, used to roughen the inner wall of the core hole, is mounted on the lifting platform 52 and includes a downward-pointing roughening blade 62 and a roughening motor 61 that drives the roughening blade 62. Figure 1 , Figure 2 and Figure 10 As shown;
[0051] The core cleaning device 7 is used to clean debris from the core hole. It includes a suction port 71 and its pump 72 mounted on the lifting platform 52, a waste bin 75 mounted on the vehicle body 1, and a suction pipe 74 connecting the pump 72 and the waste bin 75. The suction port 71 points downwards and is retractable. Figure 1 , Figure 2 and Figure 11 As shown.
[0052] This equipment can mix high-quality concrete on-site and fill core holes. It can roughen the inner wall of the core holes and clean debris before filling. It boasts high filling efficiency, facilitates timely restoration of traffic, and delivers high-quality fill that maximizes the restoration of the original road surface's performance. It also requires less labor and is easy to implement and promote. Specifically:
[0053] The vehicle body 1 can move and adjust the position of the entire equipment, facilitating the construction of multiple core holes;
[0054] The switching device 2 can switch the positions of the lifting device 5, the roughening device 6, and the hole cleaning device 7 with the stirring device 3 in a coordinated manner. The positions of the rotating platform 1 24 and the rotating platform 25 can be adjusted according to the process. On the one hand, it ensures that the devices do not interfere with each other, and on the other hand, it ensures the continuity of the mixing, roughening, hole cleaning, and filling processes.
[0055] The mixing device 3 and the storage silo 4 can achieve on-site mixing of high-quality concrete and filling of core holes. Concrete mixing no longer relies on manual experience and operation, and the mixing efficiency is high. In addition, the mixing silo 38 and the mixer 35 can rotate independently, which increases the homogeneity of concrete mixing and improves the mixing quality. On the other hand, it allows for smoother unloading, solving the problems of low efficiency, low mixing quality, and difficulty in ensuring structural strength when manually mixing concrete to fill holes.
[0056] The lifting device 5 can drive the roughening blade 62 and the suction port 71 to rise or fall, so that they enter or extend into the core hole;
[0057] The roughening device 6 can roughen the inner wall of the core hole, increase the roughness of the hole wall, improve the interface bonding ability between the new concrete and the old concrete, and solve the problem of weak interface contact between the new concrete and the original concrete slab after filling by traditional methods, which leads to subsequent damage.
[0058] The core cleaning device 7 can clean the debris in the core hole and collect the waste water and slag left in the hole during the core sampling process. This increases the bonding ability between the new concrete and the old road base and solves the problem that the bottom of the core hole is easily damaged in the later stage. In addition, the suction port 71 can extend and retract to avoid interference with the roughening device 6 during operation.
[0059] Regarding the configuration of vehicle body 1, preferably:
[0060] like Figures 1 to 3 As shown, the vehicle body 1 includes a base 11, with wheels 17 distributed around the lower part of the base 11. The wheels 17 are driven by a walking motor 18. A shifting device 2 is located at the front of the base 11, a waste bin 75 is located in the middle of the base 11, and a storage bin 4 is located at the rear of the base 11. A handle for pushing the vehicle is provided at the rear of the base 11. The handle is equipped with a start-stop controller 15 for controlling the start and stop of the vehicle body 1 and a brake controller 16 for controlling the braking of the vehicle body 1. The distribution of the shifting device 2, waste bin 75, and storage bin 4 takes into account the balanced distribution of the overall load, avoiding imbalance or uneven loading of the vehicle body 1. The vehicle body 1 can be operated by operating the handle, which is simple to operate. The start-stop controller 15 and brake controller 16 are integrated on the handle, making it safe and practical.
[0061] Regarding the configuration of the transposition device 2, preferably:
[0062] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in the transposition device 2, rotating platform 1 24 is fixed on rotating shaft 23 with rotating shaft 23 as the center of rotation, and rotating platform 25 is fixed on sleeve 22 with sleeve 22 as the center of rotation. Sleeve 22 fits loosely on rotating shaft 23. Both sleeve 22 and rotating shaft 23 are rotatably mounted on vehicle body 1. Sleeve 22 and rotating shaft 23 are connected by gear transmission mechanism 21 so that their rotation directions are opposite when they are linked. The linkage between rotating platform 1 24 and rotating platform 25 is converted into the linkage between coaxial sleeve 22 and rotating shaft 23, which can be achieved using a simple gear transmission mechanism 21, simplifying the structure.
[0063] like Figure 4 As shown, both rotating platform 1 (24) and rotating platform 2 (25) are equipped with handles for easy rotation.
[0064] like Figure 5 As shown, the gear transmission mechanism 21 includes a gear 211 fixed on the sleeve 22, a gear 212 meshing with the gear 211, a gear 213 sharing an intermediate shaft 216 with the gear 212, a gear 214 meshing with the gear 213 and fixed on an intermediate shaft 217, and a gear 215 meshing with the gear 214 and fixed on a rotating shaft 23. Both the intermediate shaft 216 and the intermediate shaft 217 are rotatably mounted on the vehicle body. Transmission and reversal can be achieved using only a few pairs of gears, making it relatively stable and reliable.
[0065] like Figure 5 As shown, in the gear transmission mechanism 21, the two ends of intermediate shaft one 216 and intermediate shaft two 217, the lower end of rotating shaft 23, and the vicinity of the lower end of sleeve 22 are fitted with empty limit sleeves 218; the limit sleeves 218 at the lower ends of intermediate shaft one 216 and intermediate shaft two 217 and at the lower end of rotating shaft 23 are connected by limit rods 219 to form a triangular stable structure; the limit sleeves 218 at the upper ends of intermediate shaft one 216 and intermediate shaft two 217 and the vicinity of the lower end of sleeve 22 are connected by limit rods 219 to form a triangular stable structure. This increases the stability of the gear transmission mechanism 21.
[0066] In addition, regarding the gear transmission mechanism 21, such as Figures 1 to 3 As shown, the vehicle body 1 is equipped with a protective cover 13, which covers the gear transmission mechanism 21 inside. The sleeve 22 and the rotating shaft 23 extend out of the protective cover 13 to prevent sewage and residue from entering the gear transmission mechanism 21 and affecting its transmission performance.
[0067] Regarding the configuration of the stirring device 3, preferably:
[0068] like Figure 1 , Figure 2 and Figure 6 As shown, the mixing chamber drive mechanism includes a mixing chamber motor 36 mounted on a rotating platform 24 and a pair of meshing bevel gears 37. The driving bevel gear 37 is driven by the mixing chamber motor 36, and the driven bevel gear 37 is mounted on the mixing chamber 38. The mixing chamber drive mechanism is mounted on the rotating platform 24 and can operate regardless of the position of the rotating platform 24. Figure 7 As shown, the main body of the mixing chamber 38 is the chamber body 381. Several feed inlets 382 are distributed on the top surface of the chamber body 381. The top center of the chamber body 381 is provided with a mounting shaft 383 for mounting the bevel gear 37.
[0069] like Figure 1 , Figure 2 and Figure 6 As shown, the agitator drive mechanism includes an agitator motor 31, a belt drive assembly 32, a transition shaft assembly 33, and a belt drive assembly 34 connected in sequence. The agitator motor 31 is mounted on the vehicle body 1 with its height increased. The transition shaft assembly 33 is mounted on the rotation center of the rotating platform 24. The input end of the agitator 35 extends out of the mixing chamber 38 and connects to the output end of the belt drive assembly 34. Since the belt drive assembly 32 and the belt drive assembly 34 are connected via the transition shaft assembly 33, and the transition shaft assembly 33 is mounted on the rotation center of the rotating platform 24, even if the position of the rotating platform 24 is changed, the transmission of the agitator motor 31, the belt drive assembly 32, the transition shaft assembly 33, and the belt drive assembly 34 will not be affected. In other words, even if the agitator drive mechanism is not mounted on the rotating platform 24, it can still work regardless of the position of the rotating platform 24.
[0070] Additionally, regarding the agitator drive mechanism, such as Figures 1 to 3 As shown, the mixer motor 31 is raised and mounted at the rear end of the vehicle body 1 via the support frame 14, and the shifting device 2 is located at the front of the vehicle body 1. This arrangement can make the load on the vehicle body 1 more balanced. In addition, a partition 12 is provided on the side of the support frame 14 facing the storage bin 4 to prevent material from splashing out.
[0071] like Figure 6 As shown, the mixer 35 includes a mixing shaft 351 and multiple mixing blades 352 of different heights. The internal space of the mixing chamber 38 is a cone shape with a larger top and a smaller bottom. The size of the mixing blades 352 gradually decreases from top to bottom, which can make the concrete mixing more uniform.
[0072] Regarding the configuration of storage silo 4, preferably:
[0073] like Figure 8 As shown, the storage silo 4 is equipped with a fine stone mixture silo 41, a cement silo 42, a mineral admixture silo 43, an additive silo 44, and a water storage silo 45.
[0074] Regarding the configuration of the lifting device 5, preferably:
[0075] like Figure 9 As shown, a rack is provided along the vertical guide rod 51, and the lifting platform 52 is sleeved on the vertical guide rod 51 and meshes with it through internal gears. The lifting drive mechanism 53 includes a rocker assembly, which is mounted on the lifting platform 52 and used to drive the internal gears of the lifting platform 52. This lifting device 5 has a relatively simple structure and operation, and low cost.
[0076] Regarding the configuration of the hole cleaning device 7, preferably:
[0077] like Figure 11 As shown, the middle portion of the suction tube 74 passes through the rotating platform 25. The portion of the suction tube 74 on the rotating platform 25 is limited by the buckle 73. The suction tube 74 is a flexible tube with redundancy. Limiting the middle portion of the suction tube 74 on the rotating platform 25 prevents it from being too long and causing potential hazards.
[0078] Example 2
[0079] This embodiment discloses a method for repairing core holes in cement concrete pavements, using the aforementioned cement concrete pavement core hole repair equipment, including the following steps:
[0080] S1, Vehicle 1 travels to the construction site;
[0081] S2. On-site concrete mixing: Place various repair materials from storage bin 4 into mixing bin 38 according to the concrete mix ratio. Turn on the mixing bin drive mechanism and the mixer drive mechanism to make mixing bin 38 and mixer 35 rotate in opposite directions to fully mix the repair materials. After the specified mixing time and quality requirements are met, turn off the mixer drive mechanism and adjust the mixing bin drive mechanism to stop mixer 35 and reduce the rotation speed of mixing bin 38 to prevent concrete segregation.
[0082] S3. Roughening the inner wall of the core hole: Operate the rotating platform 1 24 or the rotating platform 2 25, and adjust the position of the vehicle body 1 so that the roughening blade 62 is aligned with the core hole. Turn on the roughening motor 61 to make the roughening blade 62 rotate, shorten the suction port 71, operate the lifting drive mechanism 53 to make the rotating roughening blade 62 enter the core hole downward and extend downward a certain distance, while ensuring that the suction port 71 does not interfere. Turn off the roughening motor 61, operate the lifting drive mechanism 53 to make the roughening blade 62 extend upward out of the core hole.
[0083] S4. Clean the debris in the core hole: Operate the rotating platform 1 24 or the rotating platform 2 25, and adjust the position of the vehicle body 1 so that the suction port 71 is aligned with the core hole. Extend the suction port 71, operate the lifting drive mechanism 53 to make the suction port 71 enter the bottom of the core hole downwards, while ensuring that the roughening blade 62 does not interfere. Turn on the pump 72 to suck the debris in the core hole into the waste bin 75. After cleaning, turn off the pump 72 and operate the lifting drive mechanism 53 to make the suction port 71 extend upwards out of the core hole.
[0084] S5. Filling the core hole: Operate rotating platform 1 24 or rotating platform 2 25, and adjust the position of vehicle body 1 so that the discharge port 39 is aligned with the core hole. Turn on the agitator drive mechanism to make the agitator 35 rotate, and open the discharge port 39 to let the repair material fall into the core hole. After filling, close the discharge port 39 and the agitator drive mechanism, smooth the core hole and perform curing (spray curing liquid and cover with curing film).
[0085] S6. For each subsequent core hole, roughening, cleaning, and filling are carried out in sequence.
[0086] The embodiments described above are some, but not all, of the embodiments of this application. The detailed description of the embodiments of this application is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
Claims
1. A core drilling repair device for cement concrete pavement, characterized in that: The vehicle includes a vehicle body (1) that can move and turn. The vehicle body (1) is equipped with a shifting device (2), a stirring device (3), a storage bin (4), a lifting device (5), a roughening device (6), and a hole cleaning device (7). The shifting device (2) includes a rotating platform one (24) and a rotating platform two (25) that are distributed vertically and staggered. One end of each platform is the center of rotation, and the other end is located at the edge of the vehicle body (1). The two platforms are linked together, and when one platform rotates, the other platform rotates in the opposite direction. The stirring device (3) is used to stir the repair material. It includes a stirring bin (38) installed on the rotating platform one (24) and extending out of the vehicle body (1), a stirring bin drive mechanism for driving the stirring bin (38) to rotate, a stirrer (35) located in the stirring bin (38), a stirrer drive mechanism for driving the stirrer (35) to rotate, a discharge port (39) located at the bottom of the stirring bin (38) and capable of being opened and closed, a stirring bin drive mechanism, and a stirrer drive mechanism. All can work at any position on the rotating platform (24); the storage bin (4) is used to store various repair materials separately; the lifting device (5) includes a vertical guide rod (51) installed on the lower front end of the rotating platform (25), a lifting platform (52) that is lifted and lowered on the vertical guide rod and extends out of the vehicle body (1), and a lifting drive mechanism (53) for driving the lifting platform (52) to lift; the roughening device (6) is used to roughen the inner wall of the drill core hole, installed on the lifting platform (52), including a downward-pointing roughening blade (62) and a roughening motor (61) that drives the roughening blade (62); the hole cleaning device (7) is used to clean the debris in the drill core hole, including a suction port (71) and its pump (72) installed on the lifting platform (52), a waste bin (75) installed on the vehicle body (1), and a suction pipe (74) connecting the pump (72) and the waste bin (75), the suction port (71) pointing downward and retractable.
2. The cement concrete pavement core hole repair equipment as described in claim 1, characterized in that: The vehicle body (1) includes a base (11), with wheels (17) installed around the lower part of the base (11). The wheels (17) are driven by a walking motor (18). The shifting device (2) is located at the front of the base (11), the waste bin (75) is located in the middle of the base (11), and the storage bin (4) is located at the rear of the base (11). The rear end of the base (11) is provided with a handle for pushing the vehicle. The handle is provided with a start-stop controller (15) for controlling the start and stop of the vehicle body (1) and a brake controller (16) for controlling the braking of the vehicle body (1).
3. The cement concrete pavement core hole repair equipment as described in claim 1, characterized in that: In the transposition device (2), rotating platform one (24) is fixed on rotating shaft (23) and rotates around rotating shaft (23). Rotating platform two (25) is fixed on sleeve (22) and rotates around sleeve (22). Sleeve (22) fits loosely on rotating shaft (23). Sleeve (22) and rotating shaft (23) can be rotatably mounted on vehicle body (1). Sleeve (22) and rotating shaft (23) are connected by gear transmission mechanism (21) to achieve that when they are linked, their rotation directions are opposite.
4. The cement concrete pavement core hole repair equipment as described in claim 3, characterized in that: The gear transmission mechanism (21) includes a gear one (211) fixed on a sleeve (22), a gear two (212) meshing with gear one (211), a gear three (213) sharing an intermediate shaft one (216) with gear two (212), a gear four (214) meshing with gear three (213) and fixed on an intermediate shaft two (217), and a gear five (215) meshing with gear four (214) and fixed on a rotating shaft (23); the intermediate shaft one (216) and the intermediate shaft two (217) can both be rotatably mounted on the vehicle body.
5. The cement concrete pavement core hole repair equipment as described in claim 4, characterized in that: In the gear transmission mechanism (21), the two ends of intermediate shaft one (216) and intermediate shaft two (217), the lower end of the rotating shaft (23), and the area near the lower end of the sleeve (22) are fitted with empty sleeves (218); the lower ends of intermediate shaft one (216) and intermediate shaft two (217), and the lower end of the rotating shaft (23) are connected by a limiting rod (219) to form a triangular stable structure; the upper ends of intermediate shaft one (216) and intermediate shaft two (217), and the area near the lower end of the sleeve (218) are connected by a limiting rod (219) to form a triangular stable structure.
6. The cement concrete pavement core hole repair equipment as described in claim 1, characterized in that: The mixing chamber drive mechanism includes a mixing chamber motor (36) mounted on a rotating platform (24) and a pair of meshing bevel gears (37), wherein the driving bevel gear (37) is driven by the mixing chamber motor (36) and the driven bevel gear (37) is mounted on the mixing chamber (38).
7. The cement concrete pavement core hole repair equipment as described in claim 1, characterized in that: The agitator drive mechanism includes an agitator motor (31), a belt drive assembly (32), a transfer shaft assembly (33), and a belt drive assembly (34) connected in sequence. The agitator motor (31) is raised and mounted on the vehicle body (1). The transfer shaft assembly (33) is mounted on the rotation center of the rotating platform (24). The input end of the agitator (35) extends out of the mixing chamber (38) and is connected to the output end of the belt drive assembly (34).
8. The cement concrete pavement core hole repair equipment as described in claim 1, characterized in that: The agitator (35) includes an agitator shaft (351) and multiple layers of agitator blades (352) of different heights. The internal space of the agitator chamber (38) is cone-shaped with a larger upper part and a smaller lower part. The size of the agitator blades (352) gradually decreases from top to bottom.
9. The cement concrete pavement core hole repair equipment as described in claim 1, characterized in that: The vertical guide rod (51) is provided with a rack along the line. The lifting platform (52) is sleeved on the vertical guide rod (51) and meshes with it through the internal gear. The lifting drive mechanism (53) includes a rocker assembly, which is installed on the lifting platform (52) and is used to drive the gear inside the lifting platform (52) to move.
10. A method for repairing core holes in cement concrete pavement, characterized in that, The cement concrete pavement core hole repair equipment as described in any one of claims 1 to 9 includes the following steps: S1, Vehicle (1) travels to the construction site; S2. On-site mixing of concrete: Put all kinds of repair materials in the storage bin (4) into the mixing bin (38) according to the concrete mix ratio, turn on the mixing bin drive mechanism and the mixer drive mechanism to make the mixing bin (38) and the mixer (35) rotate in opposite directions to fully mix the repair materials. After the specified mixing time and quality requirements are met, turn off the mixer drive mechanism and adjust the mixing bin drive mechanism to make the mixer (35) stop rotating and the mixing bin (38) rotate at a reduced speed to prevent concrete segregation. S3. Roughening the inner wall of the core hole: Operate the rotating platform one (24) or rotating platform two (25), and adjust the position of the vehicle body (1) so that the roughening blade (62) is aligned with the core hole. Turn on the roughening motor (61) to make the roughening blade (62) rotate, shorten the suction port (71), operate the lifting drive mechanism (53) to make the rotating roughening blade (62) enter the core hole downward and extend downward a certain distance, while ensuring that the suction port (71) does not interfere. Turn off the roughening motor (61), operate the lifting drive mechanism (53) to make the roughening blade (62) extend upward out of the core hole; S4. Clean the debris in the core hole: Operate the rotating platform one (24) or rotating platform two (25), and adjust the position of the vehicle body (1) so that the suction port (71) is aligned with the core hole. Extend the suction port (71), operate the lifting drive mechanism (53) to make the suction port (71) enter the bottom of the core hole downwards, while ensuring that the roughening blade (62) does not interfere. Turn on the pump (72) to suck the debris in the core hole to the waste bin (75). After cleaning, turn off the pump (72) and operate the lifting drive mechanism (53) to make the suction port (71) extend upwards out of the core hole. S5. Filling the core hole: Operate rotating platform one (24) or rotating platform two (25), and adjust the position of the vehicle body (1) so that the discharge port (39) is aligned with the core hole. Turn on the agitator drive mechanism to make the agitator (35) rotate, and open the discharge port (39) to let the repair material fall into the core hole. After filling, close the discharge port (39) and the agitator drive mechanism, smooth the core hole and perform maintenance. S6. For each subsequent core hole, roughening, cleaning, and filling are carried out in sequence.