An adjustable height road paver screed device

Abstract

This utility model discloses an adjustable-height screed device for a road paver, including a mounting base with a screed mounted on the bottom. An automatic adjustment mechanism is located on the top of the mounting base, and an elevation adjustment mechanism is provided between the automatic adjustment mechanism and the mounting base. The automatic adjustment mechanism includes an adjustment plate, and multiple guide sleeves are fixedly connected to the top surface of the adjustment plate. Guide rods are slidably connected inside the multiple guide sleeves, and a connecting frame is fixedly connected between the multiple guide sleeves. This device belongs to the technical field of road pavers. By moving the moving wheels to the ground and causing a digital micrometer to generate a certain reading, the digital micrometer uses this reading as a reference. When the paver moves as a whole, the digital micrometer detects the flatness of the ground, and the drive motor automatically adjusts the height of the screed based on the measured data, effectively improving the flexibility and convenience of use.

Description

Technical Field

[0001] This utility model relates to the field of highway paver technology, specifically to an adjustable height highway paver screed device. Background Technology

[0002] A paver is a construction device mainly used for paving various materials for the base and surface layers of highways. It consists of various systems working together to complete the paving work, mainly including a traveling system, a hydraulic system, and a material conveying system. Highway pavers use a screed to smooth the material. In current technology, the screed uses hydraulic cylinders for height adjustment. However, during the paving process, the screed is difficult to automatically adjust according to the road surface height, making its convenience and flexibility less than ideal. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an adjustable height screed device for a road paver. This solves the problem that while hydraulic cylinders are used for height adjustment of the screed, they are difficult to automatically adjust according to the road surface height during the paving process, resulting in less than ideal convenience and flexibility in use.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: an adjustable height road paver screed device, including a mounting base, a screed mounted on the bottom of the mounting base, an automatic adjustment mechanism on the top of the mounting base, and an elevation adjustment mechanism between the automatic adjustment mechanism and the mounting base;

[0005] The automatic adjustment mechanism includes an adjustment plate, with multiple guide sleeves fixedly connected to the top surface of the adjustment plate. Guide rods are slidably connected inside the multiple guide sleeves. A connecting frame is fixedly connected between the multiple guide sleeves. A lifting screw is threadedly connected inside the connecting frame. A support frame is rotatably connected to the outside of the lifting screw. A drive motor is drivenly connected to the end of the lifting screw. A connecting rod is fixedly connected to one side of the adjustment plate. A fixed sleeve is fixedly connected to the end of the connecting rod. A movable seat is slidably connected inside the fixed sleeve. A moving wheel is rotatably connected to the bottom end of the movable seat. A return spring is provided on the top of the movable seat. A top rod is fixedly connected to the top of the movable seat. A digital micrometer is provided on the top of the top rod. The digital micrometer is fixedly installed on the top of the fixed sleeve, and the probe of the digital micrometer abuts against the top rod.

[0006] Preferably, the plurality of guide sleeves are respectively disposed at the top four corners of the guide sleeve, and the top end of the guide rod is fixedly connected to the paver frame, so that the guide rod can be used to guide the movement of the guide sleeve.

[0007] Preferably, the top of the support frame is fixedly installed on the paver frame, and the lifting screw is rotatably connected to the support frame through a bearing, so that the lifting screw can rotate.

[0008] Preferably, a worm gear is fixedly connected to the output shaft end of the drive motor, and a worm wheel is fixedly connected to the top end of the lifting screw. The drive motor is connected to the lifting screw through the worm gear and the worm wheel, so that the drive motor can drive the lifting screw to rotate, and the self-locking function of the worm gear and the worm wheel can be used to lock it, thereby improving stability.

[0009] Preferably, the connecting rod has an L-shaped cross-section, and the end of the connecting rod is detachably connected to the adjusting plate by bolts, which makes it easy to assemble and disassemble the connecting rod and the adjusting plate for maintenance.

[0010] Preferably, the bottom end of the return spring abuts against the movable seat, and the top end of the return spring abuts against the inner wall of the fixed sleeve, so that the movable seat can be reset.

[0011] Preferably, the tilt angle adjustment mechanism includes two rotating seats, which are fixedly mounted on the top surface of the mounting base. The mounting base is rotatably connected to the adjustment plate through the two rotating seats. A support rod is fixedly connected to one end of the mounting base. A connecting seat is fixedly connected to both the support rod and the adjustment plate. A hydraulic cylinder is rotatably connected between the two connecting seats, which allows for convenient adjustment of the tilt angle of the ironing board.

[0012] This invention provides an adjustable-height screed device for a road paver. Compared with the prior art, it has the following advantages:

[0013] 1. This adjustable height road paver screed device moves the moving wheels to the ground, causing the digital micrometer to generate a certain reading. Using this as a reference, the digital micrometer detects the flatness of the ground when the paver moves as a whole. The drive motor automatically adjusts the height of the screed based on the measured data, effectively improving the flexibility and convenience of use.

[0014] 2. The adjustable height road paver screed device uses a hydraulic cylinder to extend and retract, which drives the connecting seat to rotate. The rotation of the connecting seat drives the support rod to rotate, and the rotation of the support rod drives the mounting seat to rotate. This allows the mounting seat to rotate around the rotating seat, making it easy to adjust the elevation angle of the screed. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the automatic adjustment mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the fixing sleeve of this utility model;

[0018] Figure 4 This is a schematic diagram of the elevation angle adjustment mechanism of this utility model.

[0019] In the diagram: 1. Mounting base; 2. Automatic adjustment mechanism; 201. Adjustment plate; 202. Guide sleeve; 203. Guide rod; 204. Connecting frame; 205. Lifting screw; 206. Support frame; 207. Drive motor; 208. Connecting rod; 209. Fixed sleeve; 210. Movable seat; 211. Moving wheel; 212. Return spring; 213. Top rod; 214. Digital micrometer; 3. Ironing board; 4. Angle adjustment mechanism; 401. Rotating seat; 402. Support rod; 403. Connecting seat; 404. Hydraulic cylinder. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-3 This utility model provides a technical solution: an adjustable height road paver screed device, including a mounting base 1, a screed 3 mounted on the bottom of the mounting base 1, an automatic adjustment mechanism 2 on the top of the mounting base 1, an M68HC16 microcontroller controller on the automatic adjustment mechanism 2, which can control the whole system, and an elevation adjustment mechanism 4 between the automatic adjustment mechanism 2 and the mounting base 1, which can adjust the flatness of the ground through the automatic adjustment mechanism 2 and automatically adjust the height according to the measured ground data, effectively improving the flexibility and convenience of use.

[0022] The automatic adjustment mechanism 2 includes an adjustment plate 201. Multiple guide sleeves 202 are fixedly connected to the top surface of the adjustment plate 201. Guide rods 203 are slidably connected inside the multiple guide sleeves 202. The multiple guide sleeves 202 are respectively located at the four top corners of the guide sleeves 202, and the top ends of the guide rods 203 are fixedly connected to the paver frame, allowing the guide rods 203 to guide the movement of the guide sleeves 202. A connecting frame 204 is fixedly connected between the multiple guide sleeves 202. A lifting screw 205 is threadedly connected inside the connecting frame 204. A support frame 206 is rotatably connected to the outside of the lifting screw 205. The top end of the support frame 206 is fixedly mounted on the paver frame. The lifting screw 205 is rotatably connected to the support frame 206 via bearings, enabling the lifting screw 205 to rotate. A drive motor 207, a servo motor, is connected to the end of the lifting screw 205. The servo motor 207 is a high-precision, high-response closed-loop control motor system that facilitates easy adjustment of the height of the adjusting plate 201. A worm gear is fixedly connected to the end of the output shaft of the drive motor 207, and a worm wheel is fixedly connected to the top of the lifting screw 205. The drive motor 207 is connected to the lifting screw 205 via the worm gear and worm wheel, allowing the drive motor 207 to drive the lifting screw 205 to rotate, and utilizing the self-locking function of the worm gear and worm wheel... This mechanism provides a locking function and improves stability. A connecting rod 208 is fixedly connected to one side of the adjusting plate 201. The connecting rod 208 has an L-shaped cross-section, and its end is detachably connected to the adjusting plate 201 via bolts. This allows for easy disassembly and assembly of the connecting rod 208 and the adjusting plate 201, facilitating maintenance. A fixing sleeve 209 is fixedly connected to the end of the connecting rod 208. A movable seat 210 is slidably connected inside the fixing sleeve 209. A moving wheel 211 is rotatably connected to the bottom of the movable seat 210. A return spring 212 is located on the top of the movable seat 210. The bottom of the return spring 212 abuts against the movable seat 210, and the top of the return spring 212 touches the fixing sleeve 209. The inner walls abut against each other, allowing the movable seat 210 to be reset, and the moving wheels 211 on the movable seat 210 to move along the ground. A top rod 213 is fixedly connected to the top of the movable seat 210, and a digital display dial indicator 214 is provided on the top of the top rod 213. The digital display dial indicator 214 is connected to the controller via a serial cable, so that the controller can receive and process the data detected by the digital display dial indicator 214. The digital display dial indicator 214 is fixedly installed on the top of the fixed sleeve 209, and the probe of the digital display dial indicator 214 abuts against the top rod 213, so that when the top rod 213 moves, it can drive the probe of the digital display dial indicator 214 to move, thereby knowing the different heights of the ground.

[0023] Please see Figure 1 and Figure 4The tilt angle adjustment mechanism 4 includes two rotating seats 401, which are fixedly installed on the top surface of the mounting base 1. The mounting base 1 is rotatably connected to the adjustment plate 201 through the two rotating seats 401. A support rod 402 is fixedly connected to one end of the mounting base 1. A connecting seat 403 is fixedly connected to both the support rod 402 and the adjustment plate 201. A hydraulic cylinder 404 is rotatably connected between the two connecting seats 403. The hydraulic cylinder 404 can extend and retract to drive the connecting seat 403 to rotate. The rotation of the connecting seat 403 drives the support rod 402 to rotate. The rotation of the support rod 402 drives the mounting base 1 to rotate, so that the mounting base 1 rotates around the rotating seats 401, which facilitates the adjustment of the tilt angle of the ironing board 3.

[0024] During operation, the movable wheel 211 is moved to the ground, causing the digital micrometer 214 to generate a certain reading. Using this as a reference, as the paver moves as a whole, the movable wheel 211 moves, driving the movable seat 210 to move. The movable seat 210 moves, driving the top rod 213 to move. The top rod 213 moves, driving the probe of the digital micrometer 214 to move, allowing the digital micrometer 214 to detect the flatness of the ground. The digital micrometer 214 transmits the data to the controller via serial communication. The controller controls the drive motor 207 to work, which drives the lifting screw 205 to rotate. The rotation of the lifting screw 205 drives the connecting frame 204 to move, which in turn drives the guide sleeve 202 to move, automatically adjusting the height of the screed 3, effectively improving the flexibility and convenience of use.

[0025] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. An adjustable height highway paver screed apparatus comprising a mounting shoe (1), characterized by: An ironing board (3) is installed at the bottom of the mounting base (1), and an automatic adjustment mechanism (2) is provided at the top of the mounting base (1). An elevation adjustment mechanism (4) is provided between the automatic adjustment mechanism (2) and the mounting base (1). The automatic adjustment mechanism (2) includes an adjustment plate (201). Multiple guide sleeves (202) are fixedly connected to the top surface of the adjustment plate (201). Guide rods (203) are slidably connected inside the multiple guide sleeves (202). A connecting frame (204) is fixedly connected between the multiple guide sleeves (202). A lifting screw (205) is threadedly connected inside the connecting frame (204). A support frame (206) is rotatably connected to the outside of the lifting screw (205). A drive motor (207) is driven to the end of the lifting screw (205). A connecting rod is fixedly connected to one side of the adjustment plate (201). 208), the end of the connecting rod (208) is fixedly connected to a fixed sleeve (209), the fixed sleeve (209) is slidably connected to a movable seat (210), the bottom end of the movable seat (210) is rotatably connected to a moving wheel (211), the top of the movable seat (210) is provided with a return spring (212), the top of the movable seat (210) is fixedly connected to a top rod (213), the top of the top rod (213) is provided with a digital micrometer (214), the digital micrometer (214) is fixedly installed on the top of the fixed sleeve (209), and the probe of the digital micrometer (214) abuts against the top rod (213).

2. The adjustable height road paver screed device according to claim 1, characterized in that: Multiple guide sleeves (202) are respectively set at the top four corners of the guide sleeve (202), and the top of the guide rod (203) is fixedly connected to the paver frame.

3. The adjustable height screed device for a road paver according to claim 1, characterized in that: The top of the support frame (206) is fixedly installed on the paver frame, and the lifting screw (205) is rotatably connected to the support frame (206) through a bearing.

4. The adjustable height screed device for a road paver according to claim 1, characterized in that: The output shaft end of the drive motor (207) is fixedly connected to a worm gear, and the top end of the lifting screw (205) is fixedly connected to a worm wheel. The drive motor (207) is connected to the lifting screw (205) through the worm gear and the worm wheel.

5. The adjustable height screed device for a road paver according to claim 1, characterized in that: The cross-sectional shape of the connecting rod (208) is set to L-shape, and the end of the connecting rod (208) is detachably connected to the adjusting plate (201) by bolts.

6. The adjustable height screed device for a road paver according to claim 1, characterized in that: The bottom end of the return spring (212) abuts against the movable seat (210), and the top end of the return spring (212) abuts against the inner wall of the fixed sleeve (209).

7. The adjustable height screed device for a road paver according to claim 1, characterized in that: The elevation adjustment mechanism (4) includes two rotating seats (401), which are fixedly installed on the top surface of the mounting base (1). The mounting base (1) is rotatably connected to the adjustment plate (201) through the two rotating seats (401).

8. The adjustable height road paver screed device according to claim 7, characterized in that: One end of the mounting base (1) is fixedly connected to a support rod (402), and both the support rod (402) and the adjusting plate (201) are fixedly connected to a connecting seat (403). A hydraulic cylinder (404) is rotatably connected between the two connecting seats (403).

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