A concrete road expansion joint filling device

Abstract

The utility model discloses a concrete road expansion joint filling equipment relates to road construction technical field, including movable car frame, the mixing box, pump, transmission pipe, dust extraction equipment and guide wheel subassembly respectively integrated on the car frame, the input of transmission pipe is communicated with the mixing box through pump, and the dust extraction equipment is equipped with dust extraction pipe, and the dust inlet of dust extraction pipe faces expansion joint, the rear side of car frame has a rectangular frame, the guide wheel subassembly in the middle of frame includes guide wheel, support, the inclined pivot, the horizontal connecting rod, and the guide wheel is rotatably connected on the support, and the upper end of support is connected to the lower end of pivot, and the upper end of pivot is covered in the one end outside of connecting rod and pivot and connecting rod detachable connection, and the other end of connecting rod sets up on the car frame, and the pivot gradually inclines to the below of car frame along the rear to front direction, and the mixing box, dust extraction pipe, guide wheel, transmission pipe's output end sets from front to back in proper order. This layout makes operator when pushing equipment can observe the gap filling situation intuitively, real -time.

Description

Technical Field

[0001] This utility model relates to the technical field of road construction, and in particular to a concrete road expansion joint filling device. Background Technology

[0002] Expansion joints, also known as building expansion joints, are structural joints installed at appropriate locations along the construction joint direction of a building or structure to prevent cracks or damage caused by changes in climate temperature (thermal expansion and contraction). In the field of road construction technology, expansion joints in concrete roads are generally divided into contraction joints and expansion joints.

[0003] Contraction joints are transverse, non-penetrating joints installed on the pavement slab to prevent irregular cracks caused by shrinkage during the hardening process and temperature drops. The joint width is no more than 1 cm, and the depth is 1 / 3 of the slab thickness. Contraction joints are mostly perpendicular to the direction of traffic, but can also be arranged diagonally. They are generally constructed using the pressure joint method before the concrete initially sets. Expansion joints, on the other hand, are transverse, vertically continuous true joints installed on the pavement slab to allow free expansion when the temperature rises. Their spacing is generally 100-200 mm, and the joint width is generally 2-2.5 cm.

[0004] After the expansion joints of concrete roads are constructed, they need to be filled with materials such as asphalt or polyurethane to prevent water and debris from entering. Traditional caulking equipment is equipped with a mixing tank with a caulking gun mounted on it. During construction, workers need to hold the caulking gun and fill the joint along its direction. However, holding the caulking gun by hand can lead to instability and uneven filling. Utility Model Content

[0005] To address the problem of uneven filling caused by workers using hand-held caulking guns in existing technologies, the purpose of this utility model is to provide a concrete road expansion joint filling device.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A concrete road expansion joint filling device includes a movable frame, a mixing tank, a pump, a transmission pipe, a dust collection device, a guide wheel assembly, and a handle fixed to the rear side of the frame. The pump's input end is connected to the mixing tank, and the pump's output end is connected to the input end of the transmission pipe. The vacuum cleaner is equipped with a vacuum pipe, and the inlet of the vacuum pipe faces the expansion joint. The rear side of the frame is provided with a rectangular frame; the guide wheel assembly in the middle of the frame includes a guide wheel, a bracket, an inclined rotating rod, and a horizontal connecting rod. The guide wheel is rotatably connected to the bracket. The upper end of the bracket is connected to the lower end of the rotating rod. The upper end of the rotating rod is sleeved outside one end of the connecting rod and the rotating rod and the connecting rod are detachably connected. The other end of the connecting rod is fixed to the inner wall of the frame. The rotating rod gradually tilts downwards in the backward-forward direction; The output ends of the mixing tank, suction pipe, guide wheel, and transmission pipe are arranged sequentially from front to back.

[0007] Furthermore, it also includes a spring that elastically supports the upper end of the bracket at the lower end of the rotating rod, with the spring sleeved on the outside of the upper end of the bracket and the lower end of the rotating rod, and the two ends of the spring being fixedly connected to the bracket and the rotating rod respectively.

[0008] Furthermore, the lower end of the rotating rod extends freely into the upper end of the bracket, so that the lower end of the rotating rod and the upper end of the bracket form a telescopic rod.

[0009] Furthermore, the rotating rod and the connecting rod are arranged perpendicular to each other; the upper end of the rotating rod is provided with a cylindrical part, which is sleeved on the connecting rod.

[0010] Furthermore, the cylindrical portion has an annular cylindrical wall; The guide wheel assembly also includes a limiting component, which includes a knob located on the left side of the cylinder wall and a screw rod coaxial with the knob. The screw rod is fixedly connected to the right end of the knob, and the left end face of the connecting rod is provided with a screw hole that mates with the screw rod. The connecting rod is provided with a limiting part at the right end of the limiting cylindrical part.

[0011] Furthermore, it also includes a first set screw, and a threaded hole is provided on the cylindrical wall of the cylindrical part, through which the first set screw passes; The connecting rod has a groove along its length for the first set screw to extend into.

[0012] Furthermore, the guide wheel includes a coaxial embedded wheel and two traveling wheels, with the two traveling wheels fixedly connected to the left and right sides of the embedded wheel respectively; the two traveling wheels are symmetrically arranged left and right and rotatably connected to the bracket, and the diameter of the two traveling wheels is smaller than the diameter of the embedded wheel.

[0013] Furthermore, the frame includes a main frame and a U-shaped connecting frame. The width of the connecting frame is smaller than the rear side of the main frame, and both ends of the connecting frame are fixed to the rear side of the main frame to form a rectangular frame. The mixing tank and the dust collection device are both located at the top of the main frame, and the dust collection device is located behind the mixing tank. The output end of the transmission pipe and the guide wheel assembly are both located on the connecting frame.

[0014] Furthermore, it also includes a card holder, which is connected to the rear end of the connecting frame; the card holder is provided with a through hole running vertically through it, and the output end of the transmission tube passes through the through hole.

[0015] Furthermore, the handrail includes a handrail bar and two connecting rods, with both ends of the handrail bar connected to the rear side of the main frame via the two connecting rods; the handrail bar is located above the connecting frame.

[0016] Furthermore, it also includes a walking assembly, which includes two front wheels and two swivel wheels. The two front wheels are respectively mounted on the front ends of the left and right sides of the frame; the two front wheels are located in front of the two swivel wheels.

[0017] Because this utility model employs the aforementioned technology, it has the following positive effects compared to existing technologies: (1) This utility model includes a guide wheel assembly and a transmission pipe, both mounted on a frame. The guide wheel assembly is located in front of the discharge end of the transmission pipe. During construction, the guide wheel in the guide wheel assembly can be embedded in the expansion joint, playing a guiding and limiting role during movement, ensuring that the equipment moves along the direction of the expansion joint without deviation, thereby ensuring that the discharge end of the transmission pipe is always aligned with the expansion joint for operation. Compared with the existing technology where workers hold a caulking gun, this equipment significantly improves the stability of the caulking process.

[0018] (2) This utility model is equipped with a dust collection device, which has a dust collection pipe and is arranged in front of the guide wheel assembly. During construction, the dust collection pipe can first clean the inside of the expansion joint to remove impurities, and complete the cleaning operation of the front section while the device moves forward. This structure not only helps to improve the quality of grouting, but also avoids debris from interfering with the normal movement of the guide wheel assembly, ensuring smooth movement.

[0019] (3) The frame of this utility model includes a main frame and a connecting frame. The connecting frame is connected to the rear end of the main frame, and the handrail is also located at the rear end of the main frame. The walking wheel assembly and the discharge end of the transmission pipe are both installed on the connecting frame. In addition, this utility model installs the guide wheel on an inclined rotating rod, while in the prior art, the guide wheel is also installed on a vertical rod. The verticality results in a limited length of the rod, making it difficult to observe when pushing the cart. The inclined rotating rod of this application is inclined and easier to observe. In summary, this layout allows the operator to observe the grouting situation intuitively and in real time when pushing the equipment, making it easier to make timely adjustments when encountering special situations. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of a concrete road expansion joint filling device according to this utility model; Figure 2 This is a left view of a concrete road expansion joint filling device according to this utility model; Figure 3 yes Figure 2 A magnified view of a portion of the image; Figure 4 This is a top view of a concrete road expansion joint filling device according to this utility model; Figure 5 This is a schematic diagram of the guide wheel assembly of a concrete road expansion joint filling device according to this utility model; Figure 6 This is an exploded view of the guide wheel assembly of a concrete road expansion joint filling device according to this utility model.

[0021] In the attached diagram: 1. Chassis; 11. Main frame; 12. Connecting frame; 2. Mixing tank; 21. Tank body; 22. Motor; 23. Mixing rod; 3. Pump; 4. Transmission pipe; 41. Rubber sleeve; 5. Dust collection equipment; 51. Dust collection pipe; 52. Flexible pipe; 521. Soft brush section; 6. Guide wheel assembly; 61. Guide wheel; 611. Embedded wheel; 612. Traveling wheel; 62. Bracket; 63. Rotating rod; 6 31. Cylindrical section; 64. Connecting rod; 641. Slot; 642. Limiting part; 65. Seat; 651. Mounting hole; 66. Spring; 67. First set screw; 68. Second set screw; 69. Limiting component; 691. Knob; 692. Screw; 7. Traveling assembly; 71. Front wheel; 72. Caster wheel; 8. Seat; 9. Handrail; 91. Handrail bar; 92. Connecting rod; 10. Generator. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0024] Please refer to Figures 1 to 6 As shown, a concrete road expansion joint filling device is shown, including a movable frame 1, a mixing tank 2, a pump 3, a transmission pipe 4, a dust collection device 5, a guide wheel assembly 6, and a handle 9 fixed to the rear side of the frame 1.

[0025] The input end of pump 3 is connected to the mixing tank 2, and the output end of pump 3 is connected to the input end of the transmission pipe 4; the mixing tank 2 outputs concrete slurry through the pump and the transmission pipe.

[0026] The vacuum cleaner 5 is equipped with a vacuum pipe 51, and the inlet of the vacuum pipe 51 faces the expansion joint.

[0027] The rear of the frame 1 is provided with a rectangular frame; the guide wheel assembly 6 in the middle of the frame includes a guide wheel 61, a bracket 62, an inclined rotating rod 63, and a horizontal connecting rod 64. The guide wheel 61 is rotatably connected to the bracket 62. The upper end of the bracket 62 is connected to the lower end of the rotating rod 63. The upper end of the rotating rod 63 is sleeved on the outside of one end of the connecting rod 64, and the rotating rod 63 and the connecting rod 64 are detachably connected. The other end of the connecting rod 64 is fixed to the inner wall of the frame. The length direction of the connecting rod 64 is along the left-right direction.

[0028] The lower end of the bracket 62 is generally inverted U-shaped. Guide wheels 61 are rotatably mounted on two opposite side walls of the bracket 62. A round rod is fixed in the middle of the top surface of the bracket 62. The bracket 62 can be fixed to the rotating rod 63, or a flexible connection scheme can be used in the preferred embodiment described later, with the upper end of the rotating rod 63 sleeved over the connecting rod 64. The rotating rod 63 gradually slopes downwards in a backward-forward direction. The frame is on a horizontal plane, and the lower end of the rotating rod 63 slopes downwards towards the frame, which serves as a mounting foundation. A bolt with a nut can be inserted between the upper end of the rotating rod 63 and the connecting rod 64, allowing for a detachable connection, or see the preferred embodiment described later.

[0029] The mixing tank 2, suction pipe 51, guide wheel 61, and output end of the transmission pipe 4 are arranged sequentially from front to back. The output end of the transmission pipe 4 is installed at the rear end of the frame 1, and a nozzle is provided at the output end of the transmission pipe 4, with the nozzle facing the expansion joint. The guide assembly 6 is located in front of the output end of the transmission pipe 4, with its bottom end located inside the expansion joint, serving a guiding function. The suction device 5 is equipped with a suction pipe 51, which is located in front of the guide assembly 6, with its dust inlet facing the expansion joint. During construction, the device is pushed forward, and while moving, the suction pipe 51 suctions the dust inside the expansion joint, the guide wheel assembly 6 guides the travel, and the transmission pipe 4 fills the expansion joint with material.

[0030] In a preferred embodiment, a spring 66 is further included to elastically support the upper end of the bracket 62 at the lower end of the rotating rod 63. The spring 66 is respectively sleeved on the outside of the upper end of the bracket 62 and the lower end of the rotating rod 63, and the two ends of the spring 66 are fixedly connected to the bracket 62 and the rotating rod 63 respectively. During walking, the spring 66 plays a shock-absorbing role and can better adapt to the ground. The upper end of the bracket 62 is necked relative to the bracket 62, and the round rod is stepped. The lower end of the rotating rod 63 is narrowed relative to the middle of the rotating rod 63. Thus, there is an annular surface at the upper end of the bracket 62 and the lower end of the rotating rod 63 to abut the two ends of the spring. The two ends of the spring can be welded to the annular surface. The middle of the spring is sleeved on the outside of the upper end of the bracket 62 and the lower end of the rotating rod 63. The spring is a rigid spring.

[0031] More specifically, the lower end of the rotating rod 63 extends freely into the upper end of the bracket 62, forming a telescopic rod (not shown in the figure) with the lower end of the rotating rod 63 and the upper end of the bracket 62. A spring is fitted around the telescopic rod to accommodate changes in spring length. The lower end of the rotating rod 63 is slidably connected and fitted to the upper end of the bracket 62.

[0032] In a preferred embodiment, the rotating rod 63 and the connecting rod 64 are arranged perpendicularly to each other; the upper end of the rotating rod 63 is provided with a cylindrical part 631, which is sleeved on the connecting rod 64.

[0033] In a preferred embodiment, the cylindrical portion 631 has an annular cylindrical wall that extends axially.

[0034] The guide wheel assembly 6 also includes a limiting member 69, which includes a knob 691 located on the left side of the cylinder wall and a screw 692 coaxial with the knob 691. The screw 692 is fixedly connected to the right end of the knob 691, and the left end face of the connecting rod 64 is provided with a screw hole that mates with the screw 692. The limiting member 69 can be screwed into the connecting rod 64. The connecting rod 64 has a limiting part 642 at the right end of the limiting cylindrical part 631. Thus, the cylindrical part 631 is clamped between the knob and the limiting part 642. To prevent the cylindrical part 631 from rotating, optionally, a protrusion in the left-right direction is provided on the cylindrical part 631, and a corresponding groove is provided on the connecting rod, into which the protrusion can extend. Alternatively, see the technical solution of preventing rotation of the cylindrical part 631 by a set screw: It also includes a first set screw 67, a threaded hole is provided on the cylindrical wall of the cylindrical part 631, the first set screw 67 passes through the threaded hole, and a groove is provided in the length direction of the connecting rod 64 for the first set screw 67 to extend into.

[0035] It also includes a first set screw 67. A threaded hole is provided on the wall of the cylindrical portion 631, and the first set screw 67 passes through this threaded hole and abuts against the connecting rod 64. The length of the first set screw is the radial direction of the cylindrical portion. A groove is provided along the length direction of the connecting rod 64 for the first set screw 67 to extend into. The groove is oriented along the length direction of the connecting rod to prevent the rotating rod 63 from rotating relative to the connecting rod 64. A threaded hole is provided on the wall of the cylindrical portion 631, and the first set screw 67 is installed in this threaded hole. The extended end of the first set screw 67 abuts against the groove to fasten the rotating rod 63.

[0036] The guide wheel assembly 6 also includes a limiting member 69, which includes a knob 691 and a screw 692. The screw 692 is connected to the right end of the knob 691. The left end of the connecting rod 64 is provided with a screw hole, and the screw 692 matches this screw hole. The connecting rod 64 is provided with a limiting part 642, which is located to the right of the cylindrical part 631. The knob 691 is located to the left of the cylindrical part 631. An elastic washer is provided between the knob 691 and the cylindrical part 631. When the limiting member 69 and the connecting rod 64 are tightened, the right end of the cylindrical part 631 abuts against the limiting part 642, and the left end of the cylindrical part 631 abuts against the elastic washer. At this time, the cylindrical part 631 is tightened, which enhances its stability and prevents the cylindrical part 631 from moving left and right.

[0037] The rotating rod 63 and connecting rod 64 are detachably connected. Contraction joints and expansion joints are typically installed simultaneously on concrete roads. The expansion joint is usually wider than the contraction joint. If a guide wheel 61, designed for contraction joints, is used for expansion joint construction, the guide wheel 61 is prone to lateral deviation during movement, affecting the stability of the material filling in the transmission pipe 4. Therefore, a detachable connection facilitates the replacement of the guide wheel 61 as needed, ensuring construction quality. When the guide wheel 61 needs to be replaced, first unscrew the limiting member 69, then loosen the first set screw 67, and then disassemble the rotating rod 63, spring 66, bracket 62, and guide wheel 61 together.

[0038] Optionally, the guide wheel 61 includes a coaxial embedded wheel 611 and two traveling wheels 612. The two traveling wheels 612 are fixedly connected to the left and right sides of the embedded wheel 611 respectively. The two traveling wheels 612 are symmetrically arranged on the left and right and rotatably connected to the bracket 62. The diameter of the two traveling wheels 612 is smaller than the diameter of the embedded wheel 611.

[0039] The guide wheel 61 guides the equipment to move along the length of the expansion joint, ensuring that the travel of the transmission pipe 4 is consistent with the length of the expansion joint, thereby preventing the transmission pipe 4 from deviating from the expansion joint and causing material overflow. During construction, the two traveling wheels 612 are supported on the concrete surface, and the embedded wheel 611 extends into the expansion joint. By design, the width of the embedded wheel 611 is slightly smaller than the width of the expansion joint to avoid excessive friction between the embedded wheel 611 and the inner wall of the expansion joint.

[0040] In a preferred embodiment, the frame 1 includes a main frame 11 and a U-shaped connecting frame 12. The width of the connecting frame 12 is smaller than the rear side of the main frame 11, and both ends of the connecting frame 12 are fixed to the rear side of the main frame 11. The rear side of the main frame 11 and the connecting frame 12 form a rectangular frame. A connecting rod 64 is mounted on the connecting frame 12. The mixing tank 2 and the dust collection device 5 are both located at the top of the main frame 11, with the dust collection device 5 located behind the mixing tank 2. The output end of the transmission pipe 4 and the guide wheel assembly 6 are both located on the connecting frame 12. The transmission pipe 4 is a flexible tubular structure, and its body is fixed to the frame 1 by multiple clips. The transmission pipe 4 is an electrically heated pipe to prevent the internal grouting material from solidifying. Figure 1 As shown, the transmission pipe 4 from the pump extends to the edge of the main frame 11, along the edge of the main frame 11, the edge of the connecting frame 12, and reaches the center of the rear side of the connecting frame 12.

[0041] In a preferred embodiment, it also includes a card holder 8, which is connected to the rear end of the connecting frame 12; the card holder 8 is provided with a through hole that runs vertically through it, and the output end of the transmission tube 4 passes through the through hole.

[0042] The output end of the transmission tube 4 is detachably installed in the through hole; furthermore, the outer wall of the output end of the transmission tube 4 is fixedly fitted with a rubber sleeve 41, the diameter of the horizontal section of the rubber sleeve 41 gradually increases from the bottom to the top, the rubber sleeve 41 undergoes elastic deformation and is snapped into the through hole.

[0043] In a preferred embodiment, the handrail 9 includes a handrail 91 and two connecting rods 92. Both ends of the handrail 91 are connected to the rear side of the main frame 11 via the two connecting rods 92. The handrail 91 is located above the connecting frame 12. The two connecting rods 92 are symmetrically arranged, and both are inclined to the horizontal plane. The handrail 91 is located above the connecting frame 12. This design layout allows the operator to visually and in real-time observe the grouting process while pushing the equipment, facilitating timely adjustments in special circumstances. Please refer to [reference needed]. Figure 4 .

[0044] In a preferred embodiment, the vehicle also includes a walking assembly 7, which includes two front wheels 71 and two swivel wheels 72. The two front wheels 71 are respectively mounted on the front ends of the left and right sides of the frame 1; the two front wheels 71 are located in front of the two swivel wheels 72.

[0045] Optionally, the connecting rod 64 is fixed to the frame via a base 65. The base 65 has a mounting hole 651, and the connecting rod 64 is slidably connected to the mounting hole 651. The connecting rod 64 has a slot 641. The side wall of the base 65 has a threaded hole that communicates with the mounting hole 651. A second setter screw 68 is installed in this threaded hole, and the extended end of the second setter screw 68 abuts against the slot 641. If the bracket 62, spring 66, or rotating rod 63 deforms due to external force, it may cause the guide wheel 61 to shift. The slidable connection between the connecting rod 64 and the mounting hole 651 facilitates the calibration of the guide wheel 61's position. After calibration, the second setter screw 68 is tightened.

[0046] Optionally, a flexible tube 52 is fitted onto the lower end of the suction pipe 51, preferably made of rubber. The upper end of the flexible tube 52 is tightly wrapped around the outer wall of the suction pipe 51 through its own elasticity, achieving a reliable connection. A soft brush section 521 is provided at the lower end of the flexible tube 52. The soft brush section 521 is composed of multiple flexible sheet-like structures evenly distributed circumferentially. The soft brush section 521 is in contact with the road surface, and the contact structure forms a local sealed space, reducing air leakage and allowing the airflow to act more concentratedly on the expansion joint area, thereby improving suction efficiency. In addition, during the movement of the equipment, the flexible sheet-like design of the soft brush section 521 can adapt to the shape of the road surface, reducing movement resistance through deformation while maintaining a continuous and effective sealed adsorption state.

[0047] Optionally, it also includes a generator 10, which is mounted on the frame 1; the mixing tank 2 includes a tank body 21, a motor 22 and a stirring rod 23, the tank body 21 is mounted on the frame 1; the motor 22 is mounted on the top of the tank body 21, and the output end of the motor 22 is connected to the stirring rod 23 for transmission, the stirring rod 23 is placed inside the tank body 21; the generator 10 is used to provide electrical energy to the motor 22, and when working, the motor 22 drives the stirring rod 23 to rotate; the top of the tank body 21 is provided with a feed port, through which grouting material is added; the lower end of the side wall of the tank body 21 is connected to the input end of the pump 3.

[0048] Optionally, a heating device is provided at the bottom of the box 21 to heat the grouting material (such as asphalt) inside the box 21 to prevent it from solidifying; the heating device can be a burner or a heating tube, both of which are applications of existing technology.

[0049] Working principle: During operation, the device is pushed forward from the end of the expansion joint. While pushing, the vacuum cleaner 5 can be turned on, and the vacuum pipe 51 aligned with the expansion joint, with the insert wheel 611 partially embedded within it. Continue pushing forward until the discharge end of the transmission pipe 4 reaches the end of the expansion joint. Then, the pump 3 is activated, transferring the filling material from the mixing tank 2 into the transmission pipe 4. The filling material is then extruded from the nozzle at the discharge end of the transmission pipe 4 into the expansion joint. During the uniform pushing process, the filling material is continuously filled into the expansion joint. The guide wheel 61 guides the movement, and the line connecting the guide wheel 61 and the discharge end of the transmission pipe 4 coincides with the expansion joint. During operation, because the handrail 9 is located above the working area, the operator can visually and in real-time observe the filling process, facilitating timely adjustments in case of special circumstances.

[0050] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A concrete road expansion joint filling device, characterized in that: It includes a movable frame (1), a mixing tank (2) integrated on the frame (1), a pump (3), a transmission pipe (4), a vacuuming device (5), a guide wheel assembly (6), and a handrail (9) fixed to the rear side of the frame (1). The input end of the pump (3) is connected to the mixing tank (2), and the output end of the pump (3) is connected to the input end of the transmission pipe (4); The vacuum cleaner (5) is equipped with a vacuum pipe (51), and the inlet of the vacuum pipe (51) faces the expansion joint. The rear side of the frame (1) is provided with a rectangular frame; the guide wheel assembly (6) in the middle of the frame includes a guide wheel (61), a bracket (62), an inclined rotating rod (63), and a horizontal connecting rod (64). The guide wheel (61) is rotatably connected to the bracket (62). The upper end of the bracket (62) is connected to the lower end of the rotating rod (63). The upper end of the rotating rod (63) is sleeved outside one end of the connecting rod (64), and the rotating rod (63) and the connecting rod (64) are detachably connected. The other end of the connecting rod (64) is fixed to the inner wall of the frame. The rotating rod (63) gradually tilts downward in the backward-forward direction; The output ends of the mixing tank (2), the suction pipe (51), the guide wheel (61), and the transmission pipe (4) are arranged sequentially from front to back.

2. The concrete road expansion joint filling device according to claim 1, characterized in that: It also includes a spring (66) that elastically supports the upper end of the bracket (62) at the lower end of the rotating rod (63). The spring (66) is respectively sleeved on the upper end of the bracket (62) and the lower end of the rotating rod (63). The two ends of the spring (66) are fixedly connected to the bracket (62) and the rotating rod (63).

3. The concrete road expansion joint filling device according to claim 2, characterized in that: The lower end of the rotating rod (63) extends freely into the upper end of the bracket (62), so that the lower end of the rotating rod (63) and the upper end of the bracket (62) form a telescopic rod.

4. The concrete road expansion joint filling device according to claim 1, characterized in that: The rotating rod (63) and the connecting rod (64) are arranged perpendicularly to each other; the upper end of the rotating rod (63) is provided with a cylindrical part (631), which is sleeved on the connecting rod (64).

5. A concrete road expansion joint filling device according to claim 4, characterized in that: The cylindrical portion (631) has an annular cylindrical wall; The guide wheel assembly (6) also includes a limiting member (69), which includes a knob (691) located on the left side of the cylinder wall and a screw (692) coaxial with the knob (691). The screw (692) is fixedly connected to the right end of the knob (691), and the left end face of the connecting rod (64) is provided with a screw hole that mates with the screw (692). The connecting rod (64) is provided with a limiting part (642) at the right end of the limiting cylindrical part (631).

6. A concrete road expansion joint filling device according to claim 5, characterized in that: It also includes a first set screw (67), and a threaded hole is provided on the cylindrical wall of the cylindrical part (631), through which the first set screw (67) passes. The connecting rod (64) has a groove along its length for the first set screw (67) to extend into.

7. A concrete road expansion joint filling device according to claim 1, characterized in that: The frame (1) includes a main frame (11) and a U-shaped connecting frame (12). The width of the connecting frame (12) is smaller than the rear side of the main frame (11), and both ends of the connecting frame (12) are fixed to the rear side of the main frame (11) to form a rectangular frame. The mixing tank (2) and the dust collection device (5) are both located at the top of the main frame (11), and the dust collection device (5) is located behind the mixing tank (2). The output end of the transmission pipe (4) and the guide wheel assembly (6) are both located on the connecting frame (12).

8. A concrete road expansion joint filling device according to claim 7, characterized in that: It also includes a card holder (8), which is connected to the rear end of the connecting frame (12); the card holder (8) is provided with a through hole that runs vertically through it, and the output end of the transmission pipe (4) passes through the through hole.

9. A concrete road expansion joint filling device according to claim 7, characterized in that: The handrail (9) includes a handrail (91) and two connecting rods (92). The two ends of the handrail (91) are connected to the rear side of the main frame (11) through the two connecting rods (92); the handrail (91) is located above the connecting frame (12).

10. A concrete road expansion joint filling device according to claim 1, characterized in that: It also includes a walking assembly (7), which includes two front wheels (71) and two swivel wheels (72). The two front wheels (71) are respectively installed at the front ends of the left and right sides of the frame (1); the two front wheels (71) are located in front of the two swivel wheels (72).

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