CN218932810U - Maintenance crack filling preprocessing auxiliary device - Google Patents

Maintenance crack filling preprocessing auxiliary device Download PDF

Info

Publication number
CN218932810U
CN218932810U CN202221687382.6U CN202221687382U CN218932810U CN 218932810 U CN218932810 U CN 218932810U CN 202221687382 U CN202221687382 U CN 202221687382U CN 218932810 U CN218932810 U CN 218932810U
Authority
CN
China
Prior art keywords
base
circular ring
belt pulley
spiral
auxiliary device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202221687382.6U
Other languages
Chinese (zh)
Inventor
朱玉玺
王平
郑康瑜
王英凯
帅志凯
王添慧
孙飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway No 3 Engineering Group Co Ltd
Fifth Engineering Co Ltd of China Railway No 3 Engineering Group Co Ltd
Original Assignee
China Railway No 3 Engineering Group Co Ltd
Fifth Engineering Co Ltd of China Railway No 3 Engineering Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Railway No 3 Engineering Group Co Ltd, Fifth Engineering Co Ltd of China Railway No 3 Engineering Group Co Ltd filed Critical China Railway No 3 Engineering Group Co Ltd
Priority to CN202221687382.6U priority Critical patent/CN218932810U/en
Application granted granted Critical
Publication of CN218932810U publication Critical patent/CN218932810U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model provides a maintenance and crack pouring pretreatment auxiliary device, belongs to the technical field of highway maintenance, and solves the technical problems that a manual handheld slicer is used for grooving during grooving treatment of existing cracks, the grooving depth is uneven, the accuracy is not enough, the safety is not high, dust splashing is large, the V-shaped grooving structure is unstable and the like. This maintenance crack filling preprocessing auxiliary device, including the base, the trompil has been seted up on the base top, and the hollow pole of fixedly connected with in the trompil, the inside internal thread that is provided with of hollow pole is provided with the spiral lifter on the base, spiral lifter and hollow pole threaded connection, and spiral lifter top is connected with vacuum pumping unit, and spiral lifter bottom is connected with cutting mechanism, is fixed with the handrail on the base, and the base lower part rotates and is connected with four gyro wheels. The utility model has the advantages of controlling the depth of the slot, preventing dust from splashing in construction, ensuring the full filling after the pouring sealant is injected into the slot, and forming an effective cementing structure.

Description

Maintenance crack filling preprocessing auxiliary device
Technical Field
The utility model belongs to the technical field of highway maintenance pavement crack treatment, and relates to a pretreatment auxiliary device, in particular to a maintenance crack filling pretreatment auxiliary device.
Background
With the rapid development of road traffic construction, the travel demands of people are continuously increased, and roads are an important ring in traffic infrastructure and are subjected to great examination. With the increase of the time of road operation and the increase of driving burden, various diseases such as ruts, cracks and loose flaking occur on the road surface, wherein the cracks are most. Research shows that the reasons for causing pavement cracks can be mainly divided into two main categories: one is that the road surface is fatigued due to the increase of the driving load and the driving times, and the road surface is a structural crack generated by the load; the other is that the pavement is cracked due to temperature stress in the interior of the pavement under low air temperature. When raining or snowing is encountered, rainwater and snow enter into cracks, so that water damage is caused to the inside, and secondary damage is caused to the road surface. The regular maintenance of highway need repair the crack that these two kinds of reasons produced, make crack filling glue and concrete bond together usually, form the effect of elasticity expansion joint, effectively guaranteed the life of road, need carry out grooving and clearance operation before the crack filling.
The traditional pavement joint filling steps are as follows: grooving, groove cleaning and crack filling, namely firstly cutting pavement cracks into V-shaped grooves (the cross section is V-shaped), then cleaning internal broken stones and dust to form effective bonding after the subsequent crack filling glue is injected, and finally manually holding a spray gun to inject the crack filling glue. Because the crack pouring glue is sticky and is easy to cool rapidly when exposed to air, the crack pouring glue is fast in cementing especially for areas with low temperature in winter, so that the crack pouring glue is not suitable for being completely filled into a V-shaped groove, the inner bottom is empty, the crack pouring repair effect is poor, the durability is insufficient, cracks with deeper inner extension are easy to cause, and the crack pouring glue is difficult to repair. In addition, in the lancing process, a large amount of dust splashes, and the bonding effect of the crack pouring adhesive is hindered by a large amount of dust attached to the inner wall of the crack.
Disclosure of Invention
The utility model aims at solving the problems in the prior art, and provides an auxiliary device for curing and pouring seams pretreatment, which aims at solving the technical problems that: how to control the grooving depth, prevent dust from splashing in the construction, ensure that the pouring glue is fully filled after being injected into the grooving, and form an effective cementing structure.
The aim of the utility model can be achieved by the following technical scheme:
the utility model provides a maintenance crack filling preprocessing auxiliary device, includes the base, the trompil has been seted up on the base top, the hollow pole of fixedly connected with in the trompil, the inside internal thread that is provided with of hollow pole, be provided with spiral lifter on the base, spiral lifter and hollow pole threaded connection, spiral lifter top is connected with vacuum pumping device, spiral lifter bottom is connected with cutting mechanism, be fixed with the handrail on the base, the base lower part rotates and is connected with four gyro wheels.
The working principle of the utility model is as follows: firstly, staff pushes the auxiliary device to a crack position where crack filling repair is needed on a road surface through the idler wheels and the handrails, grooves are formed in the crack through the cutting mechanism according to the damage condition of the crack, and then dust and broken stone generated in the groove cutting process are sucked out and removed through the vacuum pumping device.
The cutting mechanism comprises an opening and closing assembly and a driving assembly, handles are fixed on two sides of the spiral lifting rod, the bottom end of the spiral lifting rod penetrates through the hollow rod and is connected with the opening and closing assembly, the driving assembly is fixedly connected to the base, and the opening and closing assembly is connected with the driving assembly.
By adopting the structure, a worker drives the spiral lifting rod to rotate through rotating the handle, so that the cutting mechanism is driven to move downwards, the cutting depth is convenient to adjust, meanwhile, the opening and closing assembly can be driven to move through rotation of the handle, and the road crack is convenient to cut through the cooperation of the opening and closing assembly and the driving assembly.
The driving assembly comprises a frame fixedly connected with a base, a motor is fixed inside the frame, an output shaft of the motor penetrates through the base and is fixedly provided with a telescopic sleeve, a first belt pulley is fixed at the other end of the telescopic sleeve, a first circular ring is slidingly connected to the top end of the first belt pulley, a second circular ring is rotationally connected to the spiral lifting rod, the first circular ring and the second circular ring are connected through a cross rod, a second belt pulley is slidingly connected to the second circular ring, the first belt pulley and the second belt pulley are connected through a belt, a plurality of mounting seats are fixed at the bottom end of the second belt pulley, and blades are rotationally connected to the mounting seats.
By adopting the structure, the motor drives the telescopic sleeve to rotate so as to drive the first belt pulley to rotate, the second belt pulley is driven to rotate through the belt provided with the telescopic sleeve, the mounting seat is driven to rotate, the blade is driven to rotate, the road crack is cut, the first belt pulley and the second belt pulley are fixedly connected through the transverse rod, and the first belt pulley and the second belt pulley are positioned on the same horizontal plane and can be prevented from slipping.
The assembly that opens and shuts includes the connecting rod with spiral lifter sliding connection, spiral spout has been seted up on the spiral lifter, connecting rod one end is fixed with the slider, slider and spiral spout sliding connection, the other end of connecting rod is fixed with the montant, the other end of montant is fixed with the third ring, third ring sliding connection has the fourth ring, fourth ring fixedly connected with sliding seat, the sliding seat rotates to be connected with the bracing piece, the bracing piece other end rotates to be connected with the fixing base, fixing base and blade fixed connection.
By adopting the structure, the rotary handle of the staff drives the spiral lifting rod to rotate, thereby driving the sliding block to slide along the spiral sliding groove, further driving the third ring to move downwards, driving the fourth ring to move downwards, thereby driving the sliding seat to move downwards, and the sliding seat moves downwards to extrude the supporting rod, thereby jacking the blade outwards, changing the shape of the grooving, changing the traditional V-shaped section into the trapezoid section with the lower end slightly wider than the upper end, effectively guaranteeing that the pouring sealant is fully filled after being injected into the grooving, and forming the effective cementing structure.
Annular bulges are fixedly connected to the bottom ends of the first, second and third rings, annular grooves are formed in the top ends of the first, second and fourth rings, and the annular bulges are in sliding connection with the annular grooves.
By adopting the structure, the first circular ring and the first belt pulley can be in sliding connection through the annular protrusion and the annular groove which are arranged, and the first belt pulley can move up and down under the drive of the first circular ring and be kept on the same horizontal plane with the second belt pulley.
The vacuum pumping device comprises a box body fixedly connected with a base, a vacuum pump suction pipe is fixed on the box body, a through hole is formed in the spiral lifting rod, and the other end of the vacuum pump suction pipe is rotationally connected with the top end of the spiral lifting rod.
After the grooving is finished, the blade is retracted by the rotary handle after the motor completely stops rotating, and then the rotary handle moves along the grooving, so that dust and broken stone are sucked into the box body through the through hole, and the dust and the broken stone are fully removed by the vacuum pumping device.
Compared with the prior art, the maintenance and crack pouring pretreatment auxiliary device has the following advantages:
1. staff pushes the auxiliary device to the crack position where crack filling repair is needed on the road surface through the idler wheels and the handrails, cuts the crack through the cutting mechanism according to the damage condition of the crack, and then sucks out dust and broken stone generated in the cutting process through the vacuum pumping device.
2. Through the annular bulge and the annular groove sliding connection who is equipped with for first ring and first belt pulley can sliding connection, and first belt pulley can reciprocate and keep on same horizontal plane with the second belt pulley under the drive of first ring.
3. By changing the shape of the cutting groove, the traditional V-shaped section is changed into a trapezoid section with the lower end slightly wider than the upper end, so that the filling glue is effectively ensured to be fully filled after being injected into the cutting groove, and an effective cementing structure is formed.
Drawings
Fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a schematic perspective view of another direction of the present utility model.
Figure 3 is a cross-sectional view of the construction of the telescoping sleeve part of the present utility model.
Fig. 4 is a schematic structural view of a driving assembly in the present utility model.
Fig. 5 is a schematic view of the structure of the cutting mechanism in the present utility model.
FIG. 6 is a schematic view of the structural connection of the annular protrusion and the annular groove in the present utility model.
In the figure, 1, a base; 2. a hollow rod; 3. an armrest; 4. a roller; 5. a spiral lifting rod; 6. an external thread; 7. a handle; 8. a frame; 9. a motor; 10. a telescoping sleeve; 11. a first ring; 12. a first pulley; 13. a second ring; 14. a cross bar; 15. a second pulley; 16. a belt; 17. a mounting base; 18. a blade; 19. a connecting rod; 20. a spiral chute; 21. a slide block; 22. a vertical rod; 23. a third ring; 24. a fourth ring; 25. a sliding seat; 26. a support rod; 27. a fixing seat; 28. an annular protrusion; 29. an annular groove; 30. a case; 31. a vacuum pump suction tube.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
As shown in figures 1-6, this portable highway maintenance crack filling preprocessing auxiliary device, including base 1, the trompil has been seted up on base 1 top, trompil internal fixation has hollow pole 2, hollow pole 2 inside is provided with the internal thread, be provided with spiral lifter 5 on the base 1, spiral lifter 5 and hollow pole 2 threaded connection, spiral lifter 5 top is connected with vacuum pumping device, spiral lifter 5 bottom is connected with cutting mechanism, be fixed with handrail 3 on the base 1, base 1 lower part rotates and is connected with four gyro wheels 4, in this embodiment, the staff pushes away auxiliary device to the crack department that the road surface needs to carry out crack filling repair through gyro wheel 4 and handrail 3, damage the condition according to the crack, carry out the grooving through the cutting mechanism that is equipped with, then remove dust and the rubble that the grooving in-process produced through the vacuum pumping device that is equipped with.
Cutting mechanism is including opening and shutting subassembly and drive assembly, spiral lifter 5 both sides are fixed with handle 7, spiral lifter 5 bottom passes hollow pole 2 and is connected with the subassembly that opens and shuts, fixedly connected with drive assembly on the base 1, the subassembly that opens and shuts and drive assembly connect, in this embodiment, the staff drives spiral lifter 5 through rotatory handle 7 and rotates, thereby drive cutting mechanism and move down, be convenient for adjust the degree of depth of cutting, the rotation of handle 7 can drive the subassembly that opens and shuts simultaneously and move, through mutually supporting with drive assembly, be convenient for carry out the grooving to the road crack.
The drive assembly includes the frame 8 with base 1 fixed connection, the inside motor 9 that is fixed with of frame 8, the output shaft of motor 9 passes base 1 and is fixed with telescopic tube 10, telescopic tube 10's the other end is fixed with first belt pulley 12, first belt pulley 12 top sliding connection has first ring 11, rotationally be connected with second ring 13 on the spiral lifter 5, first ring 11 and second ring 13 pass through horizontal pole 14 and connect, second ring 13 sliding connection has second belt pulley 15, first belt pulley 12 and second belt pulley 15 pass through belt 16 and connect, second belt pulley 15 bottom is fixed with a plurality of mount pad 17, mount pad 17 rotates and is connected with blade 18, in this embodiment, motor 9 drives telescopic tube 10 and rotates thereby drives first belt pulley 12 and rotate, through the belt 16 that is equipped with, thereby drive second belt pulley 15 and rotate and drive mount pad 17, and then drive blade 18 and rotate, slot the road crack, through using horizontal pole 14 fixed connection with first ring 11 and second ring 13, can make first belt pulley 12 and second belt pulley 15 be in same horizontal plane 16, can prevent the slippage.
The assembly that opens and shuts includes the connecting rod 19 with spiral lifter 5 sliding connection, spiral spout 20 has been seted up on the spiral lifter 5, connecting rod 19 one end is fixed with slider 21, slider 21 and spiral spout 20 sliding connection, the other end of connecting rod 19 is fixed with montant 22, the other end of montant 22 is fixed with third ring 23, third ring 23 sliding connection has fourth ring 24, fourth ring 24 fixedly connected with sliding seat 25, sliding seat 25 rotates and is connected with bracing piece 26, the other end rotation of bracing piece 26 is connected with fixing base 27, fixing base 27 and blade 18 fixed connection, in this embodiment, staff's rotatory handle 7 drives spiral lifter 5 rotation, thereby drive slider 21 and slide along spiral spout 20, and then drive third ring 23 downwardly moving, third ring 23 downwardly moving drives fourth ring 24 downwardly moving, thereby drive sliding seat 25 downwardly moving, sliding seat 25 downwardly moving extrudes bracing piece 26, thereby jack-up blade 18 outside, change the shape of grooving, from traditional "V type" section, become lower extreme and slightly fill "trapezoidal" section wide, the effective filling of filling the slot has formed after the full cementation structure.
Annular protrusions 28 are fixedly connected to the bottom ends of the first annular ring 11, the second annular ring 13 and the third annular ring 23, annular grooves 29 are formed in the top ends of the first belt pulley 12, the second belt pulley 15 and the fourth annular ring 24, the annular protrusions 28 are slidably connected with the annular grooves 29, in the embodiment, the first belt pulley 12 can be slidably connected with the first belt pulley 11 through the annular protrusions 28 and the annular grooves 29, and the first belt pulley 12 can move up and down under the driving of the first annular ring 11 and is kept on the same horizontal plane with the second belt pulley 15.
The vacuum pumping device comprises a box body 30 fixedly connected with a base 1, a vacuum pump suction pipe 31 is fixed on the box body, a through hole is formed in the spiral lifting rod 5, the other end of the vacuum pump suction pipe 31 is rotationally connected with the top end of the spiral lifting rod 5, in the embodiment, after the cutting is completed, after the motor 9 completely stops rotating, the blade 18 is retracted by rotating the handle 7, then the vacuum pumping device moves along the cut cutting groove, dust and broken stone are sucked into the box body 30 through the through hole, and the dust and the broken stone are fully removed by the vacuum pumping device.
The working principle of the utility model is as follows: firstly, the staff pushes the auxiliary device to the crack position where crack repairing is needed to be carried out on the road surface through the roller 4 and the handrail 3, according to the crack damage condition, the motor 9 is opened, the motor 9 drives the telescopic sleeve 10 to rotate so as to drive the first belt pulley 12 to rotate, the second belt pulley 15 is driven to rotate so as to drive the mounting seat 17 to rotate, and then the blade 18 is driven to rotate, the road crack is grooved, then the staff rotates the handle 7 to drive the spiral lifting rod 5 to rotate so as to drive the sliding block 21 to slide along the spiral chute 20, and then the third circular ring 23 is driven to move downwards, the third circular ring 23 is driven to move downwards so as to drive the sliding seat 25 to move downwards, the sliding seat 25 is driven to squeeze the supporting rod 26, so as to jack up the blade 18 to the outside, change the grooved shape, the traditional V-shaped section is changed into the trapezoid section with the lower end slightly wider than the upper end, after the cutting depth and the grooved shape are controlled by the rotating handle 7, and after the motor 9 is completely stopped rotating, the blade 18 is driven to move along the sliding block 20, and then the dust is sucked into the dust-removing groove through the vacuum dust-sucking device, and the dust-removing device is fully sucked into the dust-removing groove through the dust-sucking groove 30.
To sum up, through pushing away auxiliary device to the crack department that the road surface needs to be carried out the crack filling repair, then start motor 9 drives blade 18 rotation and carries out the grooving to the road crack, then drive blade 18 downwardly moving through rotatory handle 7, change the degree of depth of grooving and make blade 18 jack-up to the outside through the subassembly motion that opens and shuts that is equipped with, thereby change the shape of grooving, from traditional "V type" section, become lower extreme than the "trapezoidal" section of upper end slightly wide, broken stone and dust in the groove have effectively been cleared up through the vacuum pumping device simultaneously, can form stable cementation structure after the crack filling glue is poured into, the stability of structure has been guaranteed.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (6)

1. The utility model provides a maintenance crack filling preprocessing auxiliary device, includes base (1), its characterized in that, trompil has been seted up on base (1) top, hollow pole (2) of fixedly connected with in the trompil, hollow pole (2) inside is provided with the internal thread, be provided with spiral lifter (5) on base (1), spiral lifter (5) and hollow pole (2) threaded connection, spiral lifter (5) top is connected with vacuum pumping device, spiral lifter (5) bottom is connected with cutting mechanism, be fixed with handrail (3) on base (1), base (1) lower part rotation is connected with four gyro wheels (4).
2. The maintenance and crack pouring pretreatment auxiliary device according to claim 1, wherein the cutting mechanism comprises an opening and closing assembly and a driving assembly, a handle (7) is fixed on the spiral lifting rod (5), the bottom of the spiral lifting rod (5) penetrates through the hollow rod (2) and is connected with the opening and closing assembly, the driving assembly is fixedly connected to the base (1), and the opening and closing assembly is connected with the driving assembly.
3. The maintenance crack filling preprocessing auxiliary device according to claim 2, wherein the driving assembly comprises a frame (8) fixedly connected with a base (1), a motor (9) is fixedly arranged inside the frame (8), an output shaft of the motor (9) penetrates through the base (1) and is fixedly provided with a telescopic sleeve (10), a first belt pulley (12) is fixedly arranged at the other end of the telescopic sleeve (10), a first circular ring (11) is slidingly connected to the top end of the first belt pulley (12), a second circular ring (13) is rotationally connected to the spiral lifting rod (5), the first circular ring (11) and the second circular ring (13) are connected through a transverse rod (14), the second circular ring (13) is slidingly connected with a second belt pulley (15), the first belt pulley (12) and the second belt pulley (15) are connected through a belt (16), a plurality of mounting seats (17) are fixedly arranged at the bottom end of the second belt pulley (15), and blades (18) are rotationally connected to the mounting seats (17).
4. The maintenance crack filling preprocessing auxiliary device according to claim 2, characterized in that the opening and closing assembly comprises a connecting rod (19), a spiral chute (20) is formed in the spiral lifting rod (5), one end of the connecting rod (19) is fixedly provided with a sliding block (21), the sliding block (21) is in sliding connection with the spiral chute (20), the other end of the connecting rod (19) is fixedly provided with a vertical rod (22), the other end of the vertical rod (22) is fixedly provided with a third circular ring (23), the third circular ring (23) is fixedly connected with a fourth circular ring (24), the fourth circular ring (24) is fixedly connected with a sliding seat (25), the sliding seat (25) is rotationally connected with a supporting rod (26), the other end of the supporting rod (26) is rotationally connected with a fixing seat (27), and the fixing seat (27) is fixedly connected with a blade (18).
5. A maintenance crack pouring pretreatment auxiliary device according to claim 3, characterized in that the bottom ends of the first circular ring (11), the second circular ring (13) and the third circular ring (23) are fixedly connected with annular protrusions (28), the top ends of the first belt pulley (12), the second belt pulley (15) and the fourth circular ring (24) are provided with annular grooves (29), and the annular protrusions (28) are in sliding connection with the annular grooves (29).
6. The maintenance joint filling pretreatment auxiliary device according to claim 1, wherein the vacuum pumping device comprises a box body (30) fixedly connected with the base (1), a vacuum pump suction pipe (31) is fixed on the box body (30), a through hole is formed in the spiral lifting rod (5), and the other end of the vacuum pump suction pipe (31) is rotationally connected with the top end of the spiral lifting rod (5).
CN202221687382.6U 2022-07-03 2022-07-03 Maintenance crack filling preprocessing auxiliary device Active CN218932810U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202221687382.6U CN218932810U (en) 2022-07-03 2022-07-03 Maintenance crack filling preprocessing auxiliary device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202221687382.6U CN218932810U (en) 2022-07-03 2022-07-03 Maintenance crack filling preprocessing auxiliary device

Publications (1)

Publication Number Publication Date
CN218932810U true CN218932810U (en) 2023-04-28

Family

ID=86086926

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202221687382.6U Active CN218932810U (en) 2022-07-03 2022-07-03 Maintenance crack filling preprocessing auxiliary device

Country Status (1)

Country Link
CN (1) CN218932810U (en)

Similar Documents

Publication Publication Date Title
CN111287063B (en) Method for quickly repairing concrete road pavement cracks
CN211074017U (en) Vibrating device with automatic floating function
CN108532385B (en) Automatic paving, slurry lifting and surface collecting integrated machine for high-speed railway ballastless track bed plate concrete
CN102828464A (en) Cement concrete pavement Y-shaped joint cutting device and cut joint filling and sealing process
CN114214906B (en) Road construction pretreatment device and construction method thereof
CN211113071U (en) Hand-held single-end roughening machine
CN218932810U (en) Maintenance crack filling preprocessing auxiliary device
CN210420806U (en) Concrete spreading and leveling machine with auxiliary positioning function
CN112726363B (en) Pavement cutting equipment and method for highway construction
CN111042203A (en) Well lid replacing machine
JP5057846B2 (en) Cutting and removing wall or floor slab using wire saw
CN2068522U (en) Automatic slitting machine for concrete rode surface
CN209157906U (en) A kind of road construction ground Plane surface grinding machine
CN206625221U (en) Lever type movable pile cutting machine
CN214749036U (en) Quick drilling and coring device for pavement detection
CN111005297A (en) High-power deep-excavation rotary-cut device of deep foundation ground well
CN217052962U (en) Portable high-efficient low-cost road surface joint-cutting device for public road bridge roof beam construction
CN216292254U (en) A trimming means for afforestation area
CN113981787B (en) Road crack repairing device and method
CN219731572U (en) Municipal road engineering laying structure
CN218894618U (en) Novel road drilling machine
CN206784380U (en) Lever type movable pile cutting machine
CN213867265U (en) Milling machine tool apron convenient to install
CN209923740U (en) Bituminous paving side direction milling machine
CN220377072U (en) Novel grooving machine for pavement construction

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant