Road and bridge cement mortar joint filling device

Abstract

The invention relates to the field of joint filling construction, in particular to a road and bridge cement mortar joint filling device. The automatic joint filling machine comprises a frame, a discharging mechanism, a joint filling mechanism and a switching mechanism. A handle is arranged on the rear side of the top of the frame, and an axle is rotationally arranged below the frame; the discharging mechanism is arranged on the frame; the joint filling mechanism comprises a scraper located below the frame, a pressing plate located on the front side of the scraper, a rotating shaft rotationally arranged at the bottom of the frame in a damping mode and a transmission assembly which is in transmission connection with the rotating shaft and drives the pressing plate to ascend and descend in a reciprocating mode. The transmission assembly comprises a first connecting rod arranged at the end of the rotating shaft, a third connecting rod arranged at the top of the pressing plate, a second connecting rod with the two ends rotationally connected with the first connecting rod and the third connecting rod correspondingly, and a connecting frame arranged on the scraper and allowing the third connecting rod to slide, and the pressing plate is located on the rear side of the bottom end of the discharging mechanism. When the scraping plate scrapes slurry into a gap, the slurry is squeezed in a reciprocating mode through the pressing plate, so that the slurry can be fully filled in the gap, and the gap filling effect is good.

Description

Technical Field

[0001] This invention relates to the field of joint filling construction, and in particular to a cement mortar joint filling device for roads and bridges. Background Technology

[0002] During road and bridge construction, cement mortar filling devices are needed to fill the gaps in the road surface or bridge structure with cement mortar, ensuring the durability and load-bearing capacity of the road and bridge structure.

[0003] Chinese Patent Publication No. CN221398612U discloses a cement mortar joint filling device for roads and bridges, including a base, an installation frame fixedly connected to the upper middle part of the base, a fan fixedly connected to the upper front side of the base, a collection box fixedly connected to the fan input end, a filter plate installed inside the collection box, a conveying pipe fixedly connected to the outside of the collection box, the other end of the conveying pipe passing through the inside of the base and fixedly connected to the dust removal port, a drawer slidably connected inside the collection box, a fixed column fixedly connected to the upper rear side of the base, an adjusting rod slidably connected inside the fixed column, a handrail fixedly connected to the top of the adjusting rod, and an installation pipe fixedly connected to the outside of the fixed column. This device facilitates the cleaning of the inside of road surface gaps, avoids debris inside the gaps from affecting the filling effect, and improves the quality and durability of the filling.

[0004] However, the above technical solution has the following shortcomings: after the slurry is discharged from the outlet, it is only smoothed by the scraper behind it. However, because the depth, width and other dimensions of the cracks in different areas are different, the amount of slurry required to fill different areas is different. When the slurry is simply smoothed by the scraper, the slurry cannot be fully filled into the gaps, and secondary filling may be required. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a cement mortar filling device for road and bridge construction. When the scraper scrapes the mortar into the gap, the pressure plate repeatedly squeezes the mortar, so that the mortar can fully fill the gap and the filling effect is good.

[0006] The technical solution of the present invention is a cement mortar joint filling device for road and bridge construction, comprising a frame, a feeding mechanism, a joint filling mechanism, and a switching mechanism; a handle is provided on the rear side of the top of the frame, and an axle is rotatably provided below it, with wheels at both ends of the axle; the feeding mechanism is provided on the frame; the joint filling mechanism includes a scraper located below the frame, a pressure plate located in front of the scraper, a damping rotating shaft located at the bottom of the frame, and a transmission assembly connected to the rotating shaft and driving the pressure plate to reciprocate and rise and fall; the transmission assembly includes a connecting rod one located at the end of the rotating shaft, a connecting rod three located at the top of the pressure plate, a connecting rod two rotatably connected at both ends to connecting rod one and connecting rod three respectively, and a connecting frame located on the scraper and allowing connecting rod three to slide; the pressure plate is located at the rear side of the bottom of the feeding mechanism; the switching mechanism switches the axle to be connected to or disconnected from the rotating shaft.

[0007] Preferably, the axle includes a rear axle and a front axle, and a drive motor for driving the rear axle to rotate is provided at the bottom of the frame. The switching mechanism switches the front axle to be connected to or disconnected from the shaft drive.

[0008] Preferably, a key is axially engaged on the outer periphery of the front axle, and the switching mechanism includes a connector slidably engaged on the front axle and the key, a pulley 1 rotatably disposed on the front axle and having a slot at one end in the axial direction, a pulley 2 disposed on the rotating shaft, a belt fitted on pulley 1 and pulley 2, and an adjustment component for inserting the connector into the slot or removing it from the slot.

[0009] Preferably, the connector includes a swivel ring and a swivel cylinder connected coaxially along the axial direction, and a plurality of inserts evenly distributed on the outer periphery of the swivel cylinder, wherein the end of the insert facing the slot is an arc-shaped curved tapered strip.

[0010] Preferably, the adjustment assembly includes a sliding frame that is slidably mounted on the frame and rotatably mounted on the connecting parts, a bracket mounted on the top of the frame, a screw mounted rotatably on the bracket, and a knob mounted on one end of the screw, wherein the screw is threadedly connected to the sliding frame.

[0011] Preferably, the feeding mechanism includes a material box mounted on the frame, a feeding hopper connected to the top of the material box, and a feeding cylinder connected to the bottom of the material box. The feeding cylinder includes a cylindrical section in the middle, and a feeding member is mounted on the rotating shaft. The feeding member is located inside the cylindrical section and feeds material downward when the feeding member rotates.

[0012] Preferably, multiple sliding columns are arranged side by side on the scraper, and the sliding columns are vertically slidably mounted on the frame and have an anti-detachment platform at the top.

[0013] Preferably, the scraper has a U-shaped plate structure with the U-shaped openings facing forward, and the front end of the pressure plate has an upwardly curved arc-shaped plate portion.

[0014] Preferably, support components are provided on both sides of the scraper. The support components include a side frame provided on the side of the scraper, a slide rail provided at the bottom of the side frame, a slider vertically slidably provided on the slide rail, a threaded knob threadedly connected to the side frame, a connecting shaft rotatably provided on the slider, and a roller provided on the connecting shaft. The bottom end of the threaded knob is rotatably connected to the slider.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: When the scraper scrapes the slurry into the gap, the present invention utilizes a pressure plate to reciprocate and compress the slurry, ensuring that the slurry fully fills the gap and achieves a good caulking effect. When using this caulking device, the worker inserts the connecting piece into the slot by adjusting the assembly, connecting the connecting piece to the pulley for transmission. When the front axle rotates, the connecting piece drives the pulley to rotate, which in turn drives the rotating shaft via belt transmission. The rotating shaft, through a connecting rod structure, drives the pressure plate to reciprocate, vibrating and compressing the slurry discharged from the bottom of the feeding mechanism. This facilitates the full injection of slurry into the gap, thus completely filling it. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram from an upper view of an embodiment of the present invention; Figure 2 This is a structural schematic diagram from the lower view of an embodiment of the present invention; Figure 3 This is a partial structural cross-sectional view of an embodiment of the present invention; Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle; Figure 5 for Figure 3 Enlarged view of the structure at point B; Figure 6 This is a structural schematic diagram of the connector; Figure 7 This is a schematic diagram of the structure of pulley one; Reference numerals: 1. Frame; 2. Wheel; 31. Rear axle; 32. Front axle; 4. Drive motor; 5. Handle; 6. Material box; 61. Feeding hopper; 7. Mixing motor; 8. Scraper; 9. Sliding column; 91. Anti-detachment platform; 10. Side frame; 11. Slide rail; 12. Threaded knob; 13. Slider; 14. Connecting shaft; 15. Roller; 16. Key; 17. Connecting part; 171. Rotating ring; 172. Rotating drum; 173. Insertion strip; 18. Sliding frame; 19. Bracket; 20. Knob; 21. Screw; 22. Pulley 1; 221. Slot; 23. Pulley 2; 24. Belt; 25. Rotating shaft; 26. Material feeding part; 27. Feeding cylinder; 281. Connecting rod 1; 282. Connecting rod 2; 283. Connecting rod 3; 29. ​​Pressure plate; 30. Connecting frame. Detailed Implementation

[0017] Example 1: As Figures 1-7 As shown in the figure, the road and bridge cement mortar filling device proposed in this embodiment includes a frame 1, a feeding mechanism, a filling mechanism and a switching mechanism.

[0018] A handle 5 is located on the top rear side of the frame 1, allowing the worker to hold the caulking device. An axle is rotatably mounted below the frame 1, with wheels 2 at both ends. The axle includes a rear axle 31 and a front axle 32. A key 16 is axially engaged on the outer circumference of the front axle 32. A drive motor 4, which drives the rear axle 31, is located at the bottom of the frame 1. A battery supplying power to the drive motor 4 is mounted on the frame 1, along with a control panel. The worker controls the start and stop of the drive motor 4 via the control panel.

[0019] like Figure 2 As shown, the feeding mechanism is mounted on the frame 1, adding cement mortar from the top and discharging it from the bottom. A discharge valve is provided at the bottom of the feeding mechanism. When using this grouting device, the discharge valve is opened; when not in use, the discharge valve is closed.

[0020] The grouting mechanism includes a scraper 8 located below the frame 1, a pressure plate 29 located in front of the scraper 8, a damping rotating shaft 25 located at the bottom of the frame 1, and a transmission assembly connected to the rotating shaft 25 and driving the pressure plate 29 to reciprocate up and down. The pressure plate 29 vibrates and presses down the cement mortar by reciprocating up and down, which helps to squeeze the mortar into the gap and fill the gap completely. The transmission assembly includes a first connecting rod 281 located at the end of the rotating shaft 25, a third connecting rod 283 located at the top of the pressure plate 29, a second connecting rod 282 whose two ends are rotatably connected to the first connecting rod 281 and the third connecting rod 283 respectively, and a connecting frame 30 located on the scraper 8 and allowing the third connecting rod 283 to slide. The pressure plate 29 is located at the rear of the bottom of the feeding mechanism. When the rotating shaft 25 rotates, it drives the first connecting rod 281 to rotate. The first connecting rod 281 drives the third connecting rod 283 to slide up and down through the second connecting rod 282. The third connecting rod 283 drives the pressure plate 29 to move up and down, thereby pressing down the slurry discharged from the feeding mechanism.

[0021] The switching mechanism switches the front axle 32 to or from a driving connection with the rotating shaft 25. The switching mechanism includes a connector 17 slidably mounted on the front axle 32 and key 16, a pulley 22 rotatably mounted on the front axle 32 with a slot 221 at one axial end, a pulley 23 mounted on the rotating shaft 25, a belt 24 fitted onto pulleys 22 and 23, and an adjustment assembly for inserting or removing the connector 17 from the slot 221. When using this caulking device, the connector 17 is inserted into the slot 221 via the adjustment assembly. As the caulking device moves forward, the front axle 32 rotates, driving the connector 17 to rotate via key 16. The connector 17 drives pulley 22 to rotate, which in turn drives pulley 23 via belt 24. Pulley 23 then drives the rotating shaft 25 to rotate, thus enabling the reciprocating movement of the pressure plate 29 using the rotation of the front axle 32, and using the pressure plate 29 to vibrately squeeze the slurry. To improve the transmission stability of the belt drive, pulley 22 and pulley 23 are both synchronous pulleys, and belt 24 is a synchronous belt.

[0022] like Figures 5-7 As shown, the connector 17 includes a rotating ring portion 171 and a rotating cylinder portion 172 coaxially connected along the axial direction, and a plurality of insert portions 173 evenly distributed on the outer periphery of the rotating cylinder portion 172. The end of the insert portion 173 facing the slot 221 is an arc-shaped curved tapered strip. The inner circumferential surfaces of the rotating ring portion 171 and the rotating cylinder portion 172 have keyways for the key 16 to slide into, so that the connector 17 can slide axially on the front shaft 32 and the key 16, and can be driven by the front shaft 32 to rotate. The cross-section of the insert portion 173 is triangular with the tip pointing outward. The shape of the slot 221 is adapted to the insert portion 173, so that the insert portion 173 can be inserted. By designing the front end of the insert portion 173 as an arc-shaped curved tapered strip structure, the process of inserting the insert portion 173 into the slot 221 can be guided, making it easier for the connector 17 to be inserted into the pulley 22.

[0023] like Figure 5 As shown, the adjustment assembly includes a sliding frame 18 slidably mounted on the frame 1 and for the rotatable mounting of the connector 17, a bracket 19 mounted on the top of the frame 1, a screw 21 rotatably mounted on the bracket 19, and a knob 20 at one end of the screw 21. The screw 21 is threadedly connected to the sliding frame 18. Rotating the knob 20 rotates the screw 21, which in turn moves the sliding frame 18 horizontally. The sliding frame 18 then moves the connector 17 horizontally, allowing the connector 17 to be inserted into or removed from the slot 221.

[0024] In this embodiment, when the scraper 8 scrapes the slurry into the gap, the pressure plate 29 reciprocates to squeeze the slurry, ensuring that the slurry fully fills the gap and provides a good caulking effect. When this caulking device is not used, the worker can remove the connector 17 from the slot 221 by adjusting the assembly. When moving this device, the wheel 2 drives the front axle 32 to rotate, and the front axle 32 drives the connector 17 to rotate. Because the damping rotation of the shaft 25 is set on the frame 1, there is rotational resistance, so the front axle 32 will not drive the pulley 22 to rotate. The front axle 32 and the pulley 22 rotate relative to each other. When using this grouting device, the worker inserts the connector 17 into the slot 221 by adjusting the assembly, and connects the connector 17 to the pulley 22 for transmission. When the front shaft 32 rotates, the connector 17 drives the pulley 22 to rotate, which in turn drives the rotating shaft 25 to rotate via belt transmission. The rotating shaft 25 drives the pressure plate 29 to move up and down through the linkage structure, which vibrates and squeezes the grout discharged from the bottom of the feeding mechanism, which helps to squeeze enough grout into the gap, thus filling the gap completely.

[0025] Example 2: Figures 1-7As shown in this embodiment, a cement mortar joint filling device for road and bridge construction is proposed. Compared with Embodiment 1, in this embodiment, the feeding mechanism includes a material box 6 mounted on the frame 1, a feeding hopper 61 connected to the top of the material box 6, and a feeding cylinder 27 connected to the bottom of the material box 6. The discharge valve is specifically installed between the material box 6 and the feeding cylinder 27. The feeding cylinder 27 includes a cylindrical section in the middle. A feeding element 26 is provided on the rotating shaft 25. When the rotating shaft 25 rotates, it will drive the feeding element 26 to rotate. The feeding element 26 is located inside the cylindrical section and rotates inside the cylindrical section. The feeding element 26 includes a mounting cylinder section coaxially mounted on the rotating shaft 25 and multiple partition sections evenly distributed on the outer circumference of the mounting cylinder section. A feeding space is formed between two adjacent partition sections. When the feeding element 26 rotates, it feeds material downwards.

[0026] Cement mortar can be added to the material box 6 through the feeding hopper 61. To prevent the mortar from solidifying, a stirring motor 7 can be installed on the top of the material box 6. The output end of the stirring motor 7 is connected to a mixer, which stirs the mortar in the material box 6. The stirring motor 7 is powered by a storage battery and its start and stop are controlled by a control panel.

[0027] This embodiment can automatically drive the material feeding component 26 to rotate during movement, and use the material feeding component 26 to push the grout downwards. The faster the filling device moves, the faster the rotation speed of the material feeding component 26, and the more grout can be pushed down. It can achieve adaptive adjustment of grout discharge, which is conducive to filling the gap.

[0028] Example 3: Figures 1-7 As shown in this embodiment, a road and bridge cement mortar joint filling device is proposed. Compared with the first embodiment, in this embodiment, multiple sliding columns 9 are arranged side by side on the scraper 8. The sliding columns 9 are vertically slidably mounted on the frame 1 and have an anti-detachment platform 91 at their top. By setting the sliding columns 9, the scraper 8 can remain in contact with the ground when the filling device moves, which can effectively spread the filling mortar.

[0029] The scraper 8 has a U-shaped plate structure with the U-shaped openings facing forward, which can surround the slurry on the inside and push it forward, thus filling the gaps neatly. The front end of the pressure plate 29 has an upwardly curved arc plate. The pressure plate 29 is located inside the scraper 8, so that when the slurry is pressed down, the slurry will not overflow onto the pressure plate 29.

[0030] Furthermore, support components are provided on both sides of the scraper 8. These support components include a side frame 10 on the side of the scraper 8, a slide rail 11 at the bottom of the side frame 10, a slider 13 vertically slidably mounted on the slide rail 11, a threaded knob 12 threadedly connected to the side frame 10, a connecting shaft 14 rotatably mounted on the slider 13, and a roller 15 mounted on the connecting shaft 14. The bottom end of the threaded knob 12 is rotatably connected to the slider 13. Rotating the threaded knob 12 adjusts the height of the slider 13, thereby adjusting the height of the roller 15. When the bottom end of the roller 15 is lower than the bottom end of the scraper 8, the roller 15 is in contact with the ground, and the scraper 8 is positioned above the ground. When the scraper 8 smooths the slurry, it allows the slurry to be a certain thickness above the ground. This allows the support components to adjust the height of the slurry protruding above the ground during smoothing, preventing ground wear on the scraper 8 and extending its service life.

[0031] This embodiment can adjust the height of the grout protruding from the ground according to the grout spreading requirements during grouting, making it flexible to use and improving the life of parts.

[0032] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A cement mortar joint filling device for roads and bridges, characterized in that, include: The frame (1) has a handle (5) on the rear top and an axle that rotates below it, with wheels (2) on both ends of the axle. The unloading mechanism is mounted on the frame (1); The filling mechanism includes a scraper (8) located below the frame (1), a pressure plate (29) located in front of the scraper (8), a rotating shaft (25) with damping rotation located at the bottom of the frame (1), and a transmission assembly that is connected to the rotating shaft (25) and drives the pressure plate (29) to reciprocate and rise. The transmission assembly includes a connecting rod 1 (281) located at the end of the rotating shaft (25), a connecting rod 3 (283) located at the top of the pressure plate (29), a connecting rod 2 (282) rotatably connected to the connecting rod 1 (281) and the connecting rod 3 (283) at both ends respectively, and a connecting frame (30) located on the scraper (8) and allowing the connecting rod 3 (283) to slide. The pressure plate (29) is located at the rear of the bottom end of the feeding mechanism. The switching mechanism switches the axle to or from a drive connection with the rotating shaft (25).

2. The cement mortar joint filling device for road and bridge construction according to claim 1, characterized in that, The axle includes a rear axle (31) and a front axle (32). A drive motor (4) for driving the rear axle (31) to rotate is provided at the bottom of the frame (1). The switching mechanism switches the front axle (32) to be connected to or disconnected from the shaft (25).

3. The cement mortar joint filling device for road and bridge construction according to claim 2, characterized in that, A key (16) is axially mounted on the outer periphery of the front axle (32). The switching mechanism includes a connector (17) slidably mounted on the front axle (32) and the key (16), a pulley (22) rotatably mounted on the front axle (32) and having a slot (221) at one end of the axial direction, a pulley (23) mounted on the rotating shaft (25), a belt (24) fitted on the pulley (22) and the pulley (23), and an adjustment component for inserting the connector (17) into the slot (221) or removing it from the slot (221).

4. The cement mortar joint filling device for road and bridge construction according to claim 3, characterized in that, The connector (17) includes a rotating ring (171) and a rotating cylinder (172) connected coaxially along the axis, and a plurality of inserts (173) evenly distributed on the outer periphery of the rotating cylinder (172), wherein the end of the insert (173) facing the slot (221) is an arc-shaped curved tapered strip.

5. A cement mortar joint filling device for road and bridge construction according to claim 3, characterized in that, The adjustment assembly includes a sliding frame (18) that is slidably mounted on the frame (1) and rotatably mounted on the connector (17), a bracket (19) mounted on the top of the frame (1), a screw (21) rotatably mounted on the bracket (19), and a knob (20) mounted on one end of the screw (21). The screw (21) is threadedly connected to the sliding frame (18).

6. The cement mortar joint filling device for road and bridge construction according to claim 1, characterized in that, The feeding mechanism includes a material box (6) mounted on the frame (1), a feeding hopper (61) connected to the top of the material box (6), and a feeding cylinder (27) connected to the bottom of the material box (6). The feeding cylinder (27) includes a cylindrical part in the middle. A feeding member (26) is provided on the rotating shaft (25). The feeding member (26) is located inside the cylindrical part. When the feeding member (26) rotates, it feeds material downwards.

7. The cement mortar joint filling device for road and bridge construction according to claim 1, characterized in that, Multiple sliding columns (9) are arranged side by side on the scraper (8). The sliding columns (9) are vertically slidably arranged on the frame (1) and have an anti-detachment platform (91) at the top.

8. A cement mortar joint filling device for road and bridge construction according to claim 7, characterized in that, The scraper (8) has a U-shaped plate structure with the U-shaped openings facing forward, and the front end of the pressure plate (29) has an upwardly curved arc plate.

9. A cement mortar joint filling device for road and bridge construction according to claim 7, characterized in that, Support components are provided on both sides of the scraper (8). The support components include a side frame (10) on the side of the scraper (8), a slide rail (11) at the bottom of the side frame (10), a slider (13) vertically sliding on the slide rail (11), a threaded knob (12) threadedly connected to the side frame (10), a connecting shaft (14) rotatably set on the slider (13), and a roller (15) set on the connecting shaft (14). The bottom end of the threaded knob (12) is rotatably connected to the slider (13).

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