Asphalt spraying device and asphalt distributor

Abstract

The application relates to the field of asphalt pavement construction, and particularly discloses an asphalt spraying device and an asphalt distributor. The asphalt spraying device comprises a connecting frame and a spraying pipe, the spraying pipe is slidably connected to the lower side of the connecting frame, and the connecting frame is connected with a driving mechanism for driving the spraying pipe to slide; the driving mechanism comprises a driving screw rod rotatably connected with the connecting frame, a guide rod fixedly connected with the connecting frame and a servo motor for driving the driving screw rod to rotate, the guide rod is arranged in parallel on one side of the driving screw rod, the spraying pipe is connected with a connecting seat, the connecting seat is threadedly connected with the driving screw rod, and the connecting seat is slidably connected with the guide rod. The servo motor is started to drive the driving screw rod to rotate in the forward and reverse directions, so that the spraying pipe reciprocally slides along the driving screw rod, and asphalt can be uniformly sprayed on the road surface, which is suitable for narrow road construction and local road surface damage repair.

Description

Technical Field

[0001] This application relates to the field of asphalt pavement construction, and in particular to an asphalt spraying device and an asphalt distributor. Background Technology

[0002] An asphalt distributor is a road surface machine that sprays liquid asphalt, such as hot asphalt or emulsified asphalt, onto the road surface. Currently, asphalt distributors are widely used in road construction, but they are not suitable for narrow road construction or localized road surface repair.

[0003] In related technologies, a small asphalt distributor includes a trolley, an asphalt tank, an asphalt pump, a hose, and a spray pipe. The asphalt tank is equipped with a mixing mechanism and a heating mechanism. The asphalt tank and the asphalt pump are mounted on the trolley. The inlet of the asphalt pump is connected to the asphalt tank, and the outlet is connected to the hose. The spray pipe is connected to the end of the hose furthest from the asphalt pump. During construction, the operator holds the spray pipe, starts the asphalt pump, and asphalt is sprayed from the head of the spray pipe. The operator then manually controls the head of the spray pipe to move within the spraying area, achieving uniform asphalt distribution.

[0004] Small asphalt sprayers are suitable for narrow road construction and local road surface repair, but they have the following technical defects: the spray pipe is handheld, and the position control precision of the spray pipe is insufficient, resulting in poor uniformity of asphalt spraying. Summary of the Invention

[0005] To improve the problem of insufficient uniformity in asphalt spraying, this application provides an asphalt spraying device and an asphalt sprayer.

[0006] Firstly, the asphalt spraying device provided in this application adopts the following technical solution: An asphalt spraying device includes a connecting frame and a spraying pipe, wherein the spraying pipe is slidably connected to the lower side of the connecting frame, and the connecting frame is connected to a drive mechanism for driving the spraying pipe to slide. The driving mechanism includes a drive screw rotatably connected to the connecting frame, a guide rod fixedly connected to the connecting frame, and a servo motor for driving the drive screw to rotate. The guide rod is arranged parallel to one side of the drive screw. The spray pipe is connected to a connecting seat. The connecting seat is threadedly connected to the drive screw and slidably connected to the guide rod.

[0007] By adopting the above technical solution, starting the servo motor can drive the drive screw to rotate in both directions, causing the spray pipe to slide back and forth along the drive screw, thereby achieving uniform spraying of asphalt on the road surface. This is suitable for narrow road construction and local road surface repair.

[0008] In addition, the servo motor can precisely control the speed of the drive screw, so as to adjust the amount of asphalt sprayed per unit area according to actual needs.

[0009] Optionally, the spray pipe includes an inlet pipe, an outlet ring, and a nozzle. One end of the inlet pipe is closed, and the other end is provided with an inlet. Multiple outlets are spaced apart on the side of the inlet pipe away from the connecting frame. The outlet ring is rotatably sleeved on the outside of the inlet pipe. Multiple outlet rings are provided along the length of the inlet pipe and correspond one-to-one with the outlets. The outlet ring is connected to the nozzle. The connecting seat is fixedly connected to the inlet pipe.

[0010] By adopting the above technical solution, the nozzle will only connect with the outlet when it is set downwards, and asphalt can only be sprayed from the nozzle. Therefore, the spraying area can be adjusted at will according to the road conditions.

[0011] Optionally, the outer wall of the feed pipe is provided with a rotating groove for the discharge ring to be inserted into, the inner wall of the rotating groove is provided with an arc-shaped groove, and a limiting block for inserting into the arc-shaped groove is connected to the inner side of the discharge ring. When the nozzle faces away from the connecting frame, the limiting block abuts against the inner wall of one end of the arc-shaped groove; when the nozzle faces the connecting frame, the limiting block abuts against the inner wall of the other end of the arc-shaped groove.

[0012] By adopting the above technical solution, the rotation position of the nozzle is restricted, so that the nozzle can be accurately rotated into place by hand.

[0013] Optionally, a fixed frame is connected to one side of the feed pipe, and a sliding frame is slidably connected to the fixed frame. The sliding frame includes a slide bar disposed on the side of the fixed frame near the feed pipe, a grip bar disposed on the side of the fixed frame away from the feed pipe, a connecting bar connecting the slide bar and the grip bar, and an insert block connected to the slide bar. The connecting bar slides through the fixed frame, and a spring is disposed between the slide bar and the fixed frame. The discharge ring is symmetrically provided with two slots for inserting the insert block. When the insert block is inserted into the slot, the nozzle faces or faces away from the connecting frame.

[0014] By adopting the above technical solution, the sliding frame is used to position the nozzle to ensure smooth spraying.

[0015] Optionally, the connecting frame is connected to multiple cleaning strips, each corresponding to a discharge ring, and the nozzle contacts the cleaning strips when facing the connecting frame.

[0016] By adopting the above technical solution, on the one hand, when the nozzle is rotated to face upwards, its surface can be cleaned by the cleaning strip; on the other hand, the cleaning strip acts as a seal, preventing external dust and debris from entering the nozzle during the movement of the asphalt spraying device, thus avoiding blockage.

[0017] Optionally, a bracket is provided on the upper side of the connecting frame, and an adjusting screw and a connecting rod are connected to the upper end of the connecting frame. The adjusting screw and the connecting rod are slidably inserted through the bracket, and the adjusting screw is threadedly connected to an adjusting handwheel that abuts against the upper side of the bracket.

[0018] By adopting the above technical solution, the vertical position of the connecting frame can be adjusted by turning the handwheel, thereby changing the height of the nozzle off the ground to suit different road conditions.

[0019] Secondly, the asphalt distributor provided in this application adopts the following technical solution: An asphalt distributor includes a trolley, an asphalt tank, an asphalt pump, a delivery hose, and an asphalt spraying device; The asphalt tank and asphalt pump are both mounted on the upper side of the trolley. The bracket is connected to the trolley. The inlet of the asphalt pump is connected to the asphalt tank, and the outlet is connected to the delivery hose. The delivery hose is connected to the spray pipe.

[0020] Optionally, the bracket is slidably connected to the underside of the trolley.

[0021] By adopting the above technical solution, the asphalt spraying device is hidden under the trolley, taking up little space, and the bracket can be slid out when in use.

[0022] Optionally, the trolley includes a platform, a railing connected to the upper part of the platform, wheels connected to both sides of the platform, and a push handle connected to the platform.

[0023] Optionally, the bracket is provided with guide rails on both sides for connection to the trolley. The bracket is connected to a first guide rod and a second guide rod on both sides near the push handle. The second guide rod is located on the side of the first guide rod away from the push handle. The guide rail is provided with a strip-shaped hole for the first guide rod and the second guide rod to pass through. An arc-shaped hole is connected to the lower side of the strip-shaped hole. When the second guide rod abuts against the end of the strip-shaped hole away from the push handle, the first guide rod can rotate around the axis of the second guide rod into the arc-shaped hole.

[0024] By adopting the above technical solution, after the bracket is slid out, the second guide rod abuts against the end of the strip hole away from the push handle. At this time, the bracket can be lifted and the first guide rod can be turned into the arc hole, making it easy to maintain or repair the spray pipe.

[0025] In summary, this application has the following beneficial effects: 1. By setting up a drive mechanism, the spray pipe can move automatically, forming a spraying area with uniform asphalt thickness; 2. The size of the spraying area can be adjusted by setting the discharge ring, making it suitable for different road conditions; 3. The cleaning strip helps to clean and seal the nozzles, which helps to extend the service life of the spray pipes and ensure their normal operation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an asphalt distributor according to an embodiment of this application; Figure 2 This is a schematic diagram of the guide rail and asphalt spraying device according to an embodiment of this application; Figure 3 This is an exploded schematic diagram of the asphalt spraying device according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the connecting plate, the driving mechanism, and the spray pipe according to an embodiment of this application; Figure 5 This is a schematic diagram of the spray pipe, fixed frame, and sliding frame according to an embodiment of this application; Figure 6 This is a cross-sectional schematic diagram of the spray pipe according to an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Connecting frame; 2. Spray pipe; 21. Feed pipe; 211. Feed inlet; 212. Discharge outlet; 213. Rotating groove; 214. Arc groove; 22. Discharge ring; 221. Limiting block; 222. Slot; 23. Nozzle; 3. Drive mechanism; 31. Drive screw; 32. Guide rod; 33. Servo motor; 4. Connecting seat; 5. Fixing frame; 6. Sliding frame; 61. Sliding bar; 62. Holding bar; 63. Connecting bar; 64. Insert block; 7. Spring; 8. Cleaning bar; 9. Bracket; 91. First guide rod; 92. Second guide rod; 10. Adjusting screw; 11. Connecting rod; 12. Adjusting handwheel; 13. Cart; 131. Cart platform; 132. Fence; 133. Wheel; 134. Push handle; 14. Asphalt tank; 15. Asphalt pump; 16. Delivery hose; 17. Guide rail; 171. Strip hole; 172. Arc hole. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0029] This application discloses an asphalt spraying device and an asphalt distributor.

[0030] Reference Figure 1 An asphalt distributor includes a trolley 13, an asphalt tank 14, an asphalt pump 15, a delivery hose 16, and an asphalt spraying device.

[0031] The cart 13 includes a platform 131, a railing 132 fixedly connected to the upper outer edge of the platform 131, wheels 133 installed on both sides below the platform 131, and a push handle 134 fixedly connected to the platform 131. By holding the push handle 134, a person can push the cart 13 to move the asphalt spraying device to the target area.

[0032] Both the asphalt tank 14 and the asphalt pump 15 are fixedly installed on the upper side of the truck bed 131. The asphalt tank 14 is used to store asphalt and is equipped with a mixing mechanism and a heating mechanism to keep the asphalt fluid. The inlet of the asphalt pump 15 is connected to the outlet 212 of the asphalt tank 14, and the outlet of the asphalt pump 15 is connected to the delivery hose 16. The end of the delivery hose 16 away from the asphalt pump 15 is connected to the asphalt spraying device, which is installed on the lower side of the truck bed 131. When the asphalt pump 15 is started, asphalt flows out from the asphalt tank 14 and is sent to the asphalt spraying device along the delivery hose 16. The asphalt spraying device sprays the asphalt onto the road surface, completing the asphalt application.

[0033] Reference Figure 1 The asphalt spraying device includes a support frame 9, a connecting frame 1 located below the support frame 9, a spraying pipe 2 located below the connecting frame 1, and a drive mechanism 3 for moving the spraying pipe 2. The support frame 9 is slidably connected to the underside of the vehicle platform 131 in the horizontal direction, which facilitates the deployment and retraction of the asphalt spraying device and the adjustment of the spraying area to align with the target area. Once the spraying area is aligned with the target area, the drive mechanism 3 is activated, which moves the spraying pipe 2 to uniformly spread asphalt over the target area.

[0034] Reference Figure 1 , Figure 2 Guide rails 17 are fixedly connected to the lower sides of both ends of the plate 131. The guide rails 17 have horizontally extending slotted holes 171. The lower side of the slotted hole 171 away from the push handle 134 is connected to an arc-shaped hole 172. The bracket 9 is U-shaped. The first guide rod 91 and the second guide rod 92 are fixedly connected to both sides of the end of the bracket 9 closest to the push handle 134. The second guide rod 92 is located on the side of the first guide rod 91 away from the push handle 134.

[0035] Both the first guide rod 91 and the second guide rod 92 are inserted into the strip hole 171. When the first guide rod 91 abuts against the inner wall of the strip hole 171 near the push handle 134, the asphalt spraying device is located directly below the vehicle plate 131 and can be stored. When the second guide rod 92 abuts against the inner wall of the strip hole 171 away from the push handle 134, the first guide rod 91 is located at the connection between the strip hole 171 and the arc hole 172. At this time, the asphalt spraying device can be lifted upward, so that the first guide rod 91 rotates around the axis of the second guide rod 92 into the arc hole 172, which makes it easy to maintain or repair the spray pipe 2.

[0036] Reference Figure 1 , Figure 3The upper end of the connecting frame 1 is fixedly connected to an adjusting screw 10 and a connecting rod 11. Two connecting rods 11 are provided and symmetrically arranged about the adjusting screw 10. Both the adjusting screw 10 and the connecting rod 11 are vertically oriented and slide through the bracket 9. The upper end of the adjusting screw 10 is threadedly connected to an adjusting handwheel 12 that abuts against the upper side of the bracket 9. Under normal circumstances, due to the gravity of the connecting frame 1, the adjusting handwheel 12 is moderately pressed against the bracket 9. After turning the adjusting handwheel 12, it moves axially relative to the adjusting screw 10, changing the distance between the connecting frame 1 and the bracket 9, adjusting the vertical position of the connecting frame 1, and thus changing the ground clearance of the nozzle 23 to suit different road conditions.

[0037] Reference Figure 4 The drive mechanism 3 includes a drive screw 31 rotatably connected to the connecting frame 1, a guide rod 32 fixedly connected to the connecting frame 1, and a servo motor 33 for driving the drive screw 31 to rotate. There are two guide rods 32, which are symmetrically arranged about the drive screw 31. The guide rods 32 are arranged parallel to the drive screw 31. The body of the servo motor 33 is fixedly connected to the connecting frame 1, and the output shaft is fixedly connected to the drive screw 31.

[0038] Reference Figure 4 Three connecting seats 4 are fixedly connected to the side of the spray pipe 2 near the connecting frame 1. The middle connecting seat 4 is threadedly connected to the drive screw 31, and the connecting seats 4 on both sides are slidably connected to the guide rod 32. When the servo motor 33 is started, it can drive the drive screw 31 to rotate in both directions, so that the spray pipe 2 slides back and forth along the drive screw 31, thereby achieving uniform spraying of asphalt on the road surface.

[0039] Reference Figure 5 , Figure 6 The spray pipe 2 includes an inlet pipe 21, an outlet ring 22, and a nozzle 23. One end of the inlet pipe 21 is closed, and the other end has an inlet port 211. A conveying hose 16 is detachably snapped into the inlet port 211. Four rotating grooves 213 are spaced at intervals along the length of the inlet pipe 21, forming a ring. Four outlet ports 212 are spaced at intervals on the side of the inlet pipe 21 away from the connecting frame 1. Each outlet port 212 communicates with and corresponds to one of the rotating grooves 213. The outlet ring 22 is disposed within the rotating grooves 213, allowing it to rotate relative to the inlet pipe 21. The nozzle 23 is fixedly connected to the outlet ring 22, and the connecting seat 4 is fixedly connected to the inlet pipe 21. When the nozzle 23 faces away from the connecting frame 1, it communicates with the outlet ports 212, allowing the asphalt entering the inlet pipe 21 to be sprayed out from the nozzle 23. Rotating the discharge ring 22 misaligns the nozzle 23 with the discharge port 212, preventing asphalt from being sprayed from the nozzle 23. By rotating the discharge ring 22 to adjust the different opening and closing states of the four nozzles 23, the asphalt spraying area can be adjusted.

[0040] Reference Figure 5 , Figure 6 The inner wall of the rotating groove 213 is provided with an arc-shaped groove 214, and a limiting block 221 that engages with the arc-shaped groove 214 is fixedly connected to the inner side of the discharge ring 22. When the nozzle 23 faces away from the connecting frame 1, the limiting block 221 abuts against the inner wall of one end of the arc-shaped groove 214; when the nozzle 23 faces the connecting frame 1, the limiting block 221 abuts against the inner wall of the other end of the arc-shaped groove 214. The arc-shaped groove 214 restricts the rotation position of the nozzle 23, so that the nozzle 23 can be accurately rotated into position by hand.

[0041] Reference Figure 4 , Figure 5 A U-shaped fixing frame 5 is fixedly connected to one side of the feed pipe 21, and a sliding frame 6 is slidably connected to the fixing frame 5. The sliding frame 6 includes a slide bar 61 disposed on the side of the fixing frame 5 near the feed pipe 21, a grip bar 62 disposed on the side of the fixing frame 5 away from the feed pipe 21, a connecting bar 63 fixedly connected between the slide bar 61 and the grip bar 62, and four insert blocks 64 fixedly connected to the side of the slide bar 61 near the feed pipe 21. The connecting bar 63 slides through the fixing frame 5, allowing the sliding frame 6 to slide closer to or further away from the feed pipe 21. A spring 7 is fixedly connected between the slide bar 61 and the fixing frame 5, and the spring 7 applies a force to the sliding frame 6 to move closer to the feed pipe 21. The four insert blocks 64 correspond one-to-one with the four discharge rings 22, and the discharge rings 22 are symmetrically provided with two slots 222 for the insert blocks 64 to be inserted. When the nozzle 23 faces or away from the connecting frame 1, the insert blocks 64 can be inserted into the corresponding slots 222, thereby positioning the nozzle 23.

[0042] Reference Figure 4 Four cleaning strips 8 are fixedly connected to the side of the connecting frame 1 near the spray pipe 2. Each cleaning strip 8 corresponds to a discharge ring 22. When the nozzle 23 faces the connecting frame 1, it contacts the cleaning strips 8. The cleaning strips 8 are provided with grooves for the nozzle 23 to be inserted. The cleaning strips 8 can be made of cleaning materials such as sponges. When the nozzle 23 is rotated to face upwards, its surface can be cleaned through the cleaning strips 8.

[0043] The implementation principle is as follows: First, push the cart 13 to the area where asphalt needs to be sprayed, then slide the bracket 9 so that the connecting frame 1 is facing the target area. Next, start the servo motor 33 and the asphalt pump 15 to make the drive screw 31 rotate and the spray pipe 2 move back and forth along the target area to achieve uniform asphalt spraying.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An asphalt sprayer, characterized in that: The device includes a trolley (13), an asphalt tank (14), an asphalt pump (15), a delivery hose (16), and an asphalt spraying device. The asphalt spraying device includes a connecting frame (1) and a spraying pipe (2). The spraying pipe (2) is slidably connected to the lower side of the connecting frame (1). The connecting frame (1) is connected to a drive mechanism (3) for driving the spraying pipe (2) to slide. The drive mechanism (3) includes a drive screw (31) rotatably connected to the connecting frame (1), a guide rod (32) fixedly connected to the connecting frame (1), and a servo motor (33) for driving the drive screw (31) to rotate. The guide rod (32) is arranged parallel to one side of the drive screw (31). The spraying pipe (2) is connected to a connecting... The connecting seat (4) is threadedly connected to the drive screw (31) and slidably connected to the guide rod (32). The spray pipe (2) includes a feed pipe (21), a discharge ring (22), and a nozzle (23). One end of the feed pipe (21) is closed, and the other end is provided with a feed port (211). Multiple discharge ports (212) are spaced apart on the side of the feed pipe (21) away from the connecting frame (1). The discharge ring (22) is rotatably sleeved on the outside of the feed pipe (21). Multiple discharge rings (22) are provided along the length of the feed pipe (21) and correspond one-to-one with the discharge ports (212). The discharge ring (22) is connected to the nozzle (23). The connecting seat (4) is fixedly connected to the feed pipe (21); the outer wall of the feed pipe (21) is provided with a rotating groove (213) for the discharge ring (22) to be inserted into, and the inner wall of the rotating groove (213) is provided with an arc groove (214). The inner side of the discharge ring (22) is connected with a limiting block (221) for being inserted into the arc groove (214); when the nozzle (23) is facing away from the connecting frame (1), the limiting block (221) abuts against the inner wall of one end of the arc groove (214); when the nozzle (23) is facing the connecting frame (1), the limiting block (221) abuts against the inner wall of the other end of the arc groove (214); a fixing frame (5) is connected to one side of the feed pipe (21), and the fixing frame (5) is slidably connected to a sliding... The sliding frame (6) includes a slide bar (61) disposed on the side of the fixed frame (5) near the feed pipe (21), a grip bar (62) disposed on the side of the fixed frame (5) away from the feed pipe (21), a connecting bar (63) connecting the slide bar (61) and the grip bar (62), and an insert (64) connected to the slide bar (61). The connecting bar (63) slides through the fixed frame (5). A spring (7) is disposed between the slide bar (61) and the fixed frame (5). The discharge ring (22) is symmetrically provided with two slots (222) for inserting the insert (64). When the insert (64) is inserted into the slot (222), the nozzle (23) faces or faces away from the connecting frame (1).A bracket (9) is provided on the upper side of the connecting frame (1). An adjusting screw (10) and a connecting rod (11) are connected to the upper end of the connecting frame (1). The adjusting screw (10) and the connecting rod (11) are slidably inserted through the bracket (9). The adjusting screw (10) is threadedly connected to an adjusting handwheel (12) that abuts against the upper side of the bracket (9). The asphalt tank (14) and the asphalt pump (15) are both located on the upper side of the trolley (13). The bracket (9) is connected to the trolley (13). The inlet of the asphalt pump (15) is connected to the asphalt tank (14), and the outlet is connected to the delivery hose (16). The delivery hose (16) is connected to the spray pipe (2).

2. The asphalt distributor according to claim 1, characterized in that: The connecting frame (1) is connected to a plurality of cleaning strips (8), and the cleaning strips (8) correspond one-to-one with the discharge ring (22). When the nozzle (23) faces the connecting frame (1), it contacts the cleaning strips (8).

3. The asphalt distributor according to claim 1, characterized in that: The bracket (9) is slidably connected to the underside of the trolley (13).

4. The asphalt distributor according to claim 3, characterized in that: The trolley (13) includes a platform (131), a railing (132) connected to the upper side of the platform (131), wheels (133) connected to both sides of the platform (131), and a push handle (134) connected to the platform (131).

5. The asphalt distributor according to claim 4, characterized in that: The bracket (9) is provided with guide rails (17) on both sides for connection to the trolley (13). The bracket (9) is connected to a first guide rod (91) and a second guide rod (92) on both sides of the end near the push handle (134). The second guide rod (92) is located on the side of the first guide rod (91) away from the push handle (134). The guide rail (17) is provided with a strip hole (171) for the first guide rod (91) and the second guide rod (92) to pass through. The lower side of the strip hole (171) is connected to an arc hole (172). When the second guide rod (92) abuts against the end of the strip hole (171) away from the push handle (134), the first guide rod (91) can rotate around the axis of the second guide rod (92) into the arc hole (172).

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