A structure for preventing cement stabilized macadam base course from being worn by adhering to screed plate of paving machine

Abstract

The application relates to the technical field of cement-stabilized macadam bottom base layers, and particularly discloses a structure for preventing cement-stabilized macadam bottom base layers from being abraded by a screed of a paver, which comprises a body, a distributor connected to the bottom of the body, an ironing device connected to the rear of the distributor, an inclined chute arranged on one side of the bottom of the ironing device, a motor arranged on one side of the ironing device, a rotating roller rotatably connected to the bottom of the inclined chute, a contact groove arranged in the side wall of the rotating roller, a contraction groove arranged in the side wall of the rotating roller, a penetrating rod rotatably connected to the middle of the contraction groove, and a disturbing block connected to the side wall of the penetrating rod. The rotating roller is rotated to embed the stone blocks with large protrusions into the contact groove, the disturbing block is pressed against the stone blocks to make the disturbing block contract and disturb the stone blocks, the stone blocks with large protrusions cannot abrade the bottom of the ironing device, and the stone blocks with small protrusions can directly pass through after the disturbing block contracts, so that the stone blocks with excessively large protrusions cannot abrade the bottom of the ironing device.

Description

Technical Field

[0001] This invention relates to the field of cement-stabilized crushed stone subbase technology, and more specifically, to a structure for preventing material adhesion and wear on the screed of a cement-stabilized crushed stone subbase. Background Technology

[0002] Cement-stabilized crushed stone subbase is a semi-rigid load-bearing layer in the road structure, located above the subgrade and below the base course. It is made of crushed stone, cement, and water mixed in proportion, spread, compacted, and cured. Its core functions are to connect the subgrade and base course, distribute loads, and stabilize the subgrade.

[0003] The existing paving is done by a paver. During the paving process, after the paver smooths the surface with a scraper, it enters the screed for compaction. Because the cement-stabilized crushed stone base contains crushed stone, if some of the stones have excessively large protrusions, or if they are lifted up during smoothing, these excessively large stones will stick to the bottom of the screed and rub against it, causing excessive wear. Summary of the Invention

[0004] The purpose of this invention is to provide a structure that prevents the screed of a paver from being worn by material adhering to it in a cement-stabilized crushed stone base course. This solves the problem that excessively large protrusions in the crushed stone, or the lifting caused by the screed during smoothing, result in excessively concentrated contact friction when the screed passes through, thus causing wear on the bottom of the screed.

[0005] This invention is achieved through the following technical solution:

[0006] This invention provides a structure for preventing material adhesion and wear on the screed of a paver in a cement-stabilized crushed stone subbase. The structure includes a main body, a material distributor connected to the bottom of the main body, and a screed connected to the bottom of the main body near the rear of the material distributor. A sloping groove is provided on one side of the bottom of the screed, and a motor is provided on one side of the screed. A rotating roller is rotatably connected to the bottom of the sloping groove. A contact groove and a shrinkage groove are provided on the side wall of the rotating roller. A through rod is rotatably connected to the center of the shrinkage groove, and a disturbance block is connected to the side wall of the through rod.

[0007] Preferably, the motor also includes a drive belt connected to the output end of the motor.

[0008] Preferably, the transmission belt engages with a round shaft protruding from one end of the rotating roller.

[0009] Preferably, the protruding portion of the rotating roller is on the surface of the chute, and the bottom of the rotating roller is parallel to the bottom of the iron.

[0010] Preferably, the contact groove is an arc-shaped groove extending from one side of the shrinkage groove, and one end of the disturbance block is attached to the connection between the contact groove and the shrinkage groove.

[0011] Preferably, the shrinkage groove is provided with a protrusion that fits the outside of the disturbance block on the side near the opening of the through rod.

[0012] Preferably, the disturbance blocks are arranged in a plurality of them on the side wall of the through rod, and the disturbance blocks are long strips that are bent in accordance with the curvature of the rotating roller.

[0013] Preferably, the shrinkage groove further includes a sealing groove, which is disposed on one side of the opening of the shrinkage groove. The sealing groove is disposed on one side of the opening of the shrinkage groove and fits the outer protrusion groove of the disturbance block, and the sealing groove is arc-shaped.

[0014] Preferably, the disturbance block further includes a blocking block and a reset spring, the blocking block protruding from the side wall of the disturbance block, and the reset spring being disposed on one side of the disturbance block.

[0015] Preferably, the blocking block is an arc-shaped protrusion on the outside of the disturbance block that mates with the blocking groove, and the reset spring is located on the side of the disturbance block facing the shrinkage groove, and one side of the disturbance block is connected to the shrinkage groove through the reset spring.

[0016] The technical solution of the present invention has at least the following advantages and beneficial effects: 1. The rotating roller in the device rotates to allow the larger protruding stones to fit into the contact groove. Then, the agitator blocks apply pressure and contract to agitate the stones, preventing the larger protruding stones from abrading the bottom of the iron. Meanwhile, the smaller protruding stones pass directly after the agitator blocks contract, preventing the stones from protruding too much and sticking to the bottom of the iron, causing dragging and wear.

[0017] 2. The device is also equipped with a sealing block and a sealing groove to seal the outer gap between the disturbance block and the shrinkage groove when the disturbance block deflects, preventing mud and sand from entering the gap during the deflection process and affecting the deflection of the disturbance block. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a bottom view of the ironing device of the present invention.

[0020] Figure 3 This is a side view of the ironing device of the present invention.

[0021] Figure 4 This is a side view cross-sectional structural diagram of the rotating roller of the present invention.

[0022] Figure 5 For the present invention Figure 4 Enlarged diagram of point A in the middle.

[0023] Figure 6 This is a front view of the rotating roller of the present invention.

[0024] Reference numerals: 1-body, 101-fabricator, 2-ironing device, 201-sloping groove, 202-motor, 2021-transmission belt, 203-rotating roller, 2031-contact groove, 2032-shrinkage groove, 2033-sealing groove, 204-disturbance block, 2041-through rod, 2042-sealing block, 2043-reset spring. Detailed Implementation

[0025] The following is combined with Figures 1 to 3 The present invention will be described in detail below.

[0026] A structure for preventing material adhesion and wear on the screed of a paver in a cement-stabilized crushed stone base course includes a body 1. A material spreader 101 is connected to the bottom of the body 1. A screed 2 is connected to the bottom of the body 1 near the rear of the material spreader 101. A sloping groove 201 is provided on one side of the bottom of the screed 2. A motor 202 is provided on one side of the screed 2. A rotating roller 203 is rotatably connected to the bottom of the sloping groove 201. A contact groove 2031 is provided on the side wall of the rotating roller 203. A shrinkage groove 2032 is provided on the side wall of the rotating roller 203. A through rod 2041 is rotatably connected to the middle of the shrinkage groove 2032. A disturbance block 204 is connected to the side wall of the through rod 2041.

[0027] First, the raw material is fed into the hopper of the main body 1 and poured out into the position of the spreader 101. The raw material is evenly spread out through the bidirectional spiral on the surface of the spreader 101. Then, it is simply smoothed by the scraper. Then, the raw material is compacted by the pressing of the iron 2. The inclined groove 201 on one side of the bottom of the iron 2 can better press the raw material into the bottom of the iron 2, thereby completing the laying of the crushed stone base layer.

[0028] Furthermore, the motor 202 also includes a transmission belt 2021, which is connected to the output end of the motor 202. The transmission belt 2021 meshes with a protruding round shaft at one end of the rotating roller 203. The protruding part of the rotating roller 203 is on the surface of the inclined groove 201, and the bottom of the rotating roller 203 is parallel to the bottom of the iron 2. The contact groove 2031 is an arc-shaped groove extending from one side of the shrink groove 2032, and one end of the disturbance block 204 is attached to the connection between the contact groove 2031 and the shrink groove 2032. The shrink groove 2032 is provided with a protrusion that fits the outside of the disturbance block 204 on the side near the opening of the through rod 2041. The disturbance block 204 is a number of blocks arranged on the side wall of the through rod 2041. The disturbance block 204 is a long strip that is bent in accordance with the curvature of the rotating roller 203.

[0029] A rotating roller 203, protruding from the bottom of the inclined chute 201, is driven to rotate via a transmission belt 2021 at the output end of the motor 202. As the rotating roller 203 rotates, it comes into contact with the raw material. If there are no protruding stones in the raw material, it will eventually be pressed to the bottom of the iron 2. However, if there are stones in the raw material that are too large, the protruding part of the stone will move into the contact groove 2031 on the side wall of the rotating roller 203. If the stone protrusion is too large to be removed from the contact groove 2031 by squeezing, it will abut against one end of the disturbance block 204. Then, through the rotation of the rotating roller 203, the disturbance block 204 will be pressed to one side, causing the disturbance block 204 to move towards the shrinkage groove 2032. During the shrinkage process, due to the space limitation of the shrinkage groove 2032, the shrinkage range of the disturbance block 204 into the shrinkage groove 2032 is limited. If the stone protrusion is too large, even after the disturbance block 204 shrinks, it will still abut against one end of the disturbance block 204. Therefore, pressure is applied to the abutting stone protrusion, forcing the disturbance stone to agitate and move to other positions in the remaining gravel, adjusting the orientation of the stone so that it does not protrude upwards, and preventing the stone protrusion from being too large and entering the bottom of the iron 2. The contact between the two and the friction generated when the iron 2 is displaced will cause drag friction, resulting in wear marks on the bottom surface of the iron 2, which will accelerate the wear of the iron 2 over a long period of time.

[0030] Because the gravel base layer itself is composed of gravel, the surface of the gravel layer is uneven. If the gravel surface of the manhole cover is uneven, the protrusion of the stones will not be too large. The protrusion of the stones will abut against one end of the disturbance block 204, and then the disturbance block 204 will be pressed to shrink into the shrinkage groove 2032. Because the protrusion of the stones will not be too large, after the disturbance block 204 shrinks into the shrinkage groove 2032 to a certain extent, the stones that are not too protruding will pass through the rotating roller 203 and enter the bottom of the ironing device 2. This will allow the rotating roller 203 to only disturb the stones that are too protruding, and also avoid the presence of stones that are too large protruding on the surface, which would affect the flatness.

[0031] The disturbance block 204 is connected to the contraction groove 2032 through the reset spring 2043, so that after the disturbance block 204 deflects and contracts, it will automatically reset through the elasticity of the reset spring 2043.

[0032] Furthermore, the shrinkage groove 2032 also includes a sealing groove 2033, which is disposed on the opening side of the shrinkage groove 2032. The sealing groove 2033 is disposed on the opening side of the shrinkage groove 2032 and fits against the outer protrusion groove of the disturbance block 204. The sealing groove 2033 is arc-shaped. The disturbance block 204 also includes a sealing block 2042 and a return spring 2043. The sealing block 2042 protrudes from the side wall of the disturbance block 204. The return spring 2043 is disposed on one side of the disturbance block 204. The sealing block 2042 is an arc-shaped protrusion on the outer side of the disturbance block 204 that cooperates with the sealing groove 2033. The return spring 2043 is disposed on the side of the disturbance block 204 facing the shrinkage groove 2032, and one side of the disturbance block 204 is connected to the shrinkage groove 2032 through the return spring 2043.

[0033] When the disturbance block 204 deflects, the protruding sealing block 2042 on the outer side extends out of the sealing groove 2033. Because the sealing block 2042 and the sealing groove 2033 are both arc-shaped and their curvatures are set around the through rod 2041, the sealing block 2042 will move out from the middle of the sealing groove 2033 when the disturbance block 204 deflects. The extension of the sealing block 2042 ensures that the outer side of the disturbance block 204 remains closed with the opening of the shrinkage groove 2032 when the disturbance block 204 deflects. This prevents mud and sand from entering the gap and affecting the disturbance block 204 after the disturbance block 204 deflects and creates a gap with the shrinkage groove 2032.

[0034] Finally, several disturbance blocks 204 are arranged on the through rod 2041, so that several disturbance blocks 204 can disturb the protruding stones at different positions without affecting the stones under the disturbance blocks 204 at other positions.

[0035] The following is a specific implementation process of the present invention. First, the raw material is fed into the hopper of the main body 1 and poured out into the position of the spreader 101. The raw material is evenly spread out through the bidirectional spiral on the surface of the spreader 101. Then, it is simply smoothed by the scraper. Then, the raw material is compacted by the pressing of the iron 2. The inclined groove 201 on one side of the bottom of the iron 2 can better press the raw material into the bottom of the iron 2, thereby completing the laying of the crushed stone base layer.

[0036] A rotating roller 203, protruding from the bottom of the inclined chute 201, is driven to rotate via a transmission belt 2021 at the output end of the motor 202. As the rotating roller 203 rotates, it comes into contact with the raw material. If there are no protruding stones in the raw material, it will eventually be pressed to the bottom of the iron 2. However, if there are stones in the raw material that are too large, the protruding part of the stone will move into the contact groove 2031 on the side wall of the rotating roller 203. If the stone protrusion is too large to be removed from the contact groove 2031 by squeezing, it will abut against one end of the disturbance block 204. Then, through the rotation of the rotating roller 203, the disturbance block 204 will be pressed to one side. The disturbance block 204 is allowed to shrink into the shrinkage groove 2032. However, due to the space limitation of the shrinkage groove 2032, the shrinkage range of the disturbance block 204 into the shrinkage groove 2032 is limited. If the stone protrusion is too large, even after the disturbance block 204 shrinks, it will still abut against one end of the disturbance block 204. Therefore, pressure is applied to the abutting stone protrusion to force the disturbance stone to agitate, preventing the stone protrusion from being too large and entering the bottom of the iron 2. The contact between the two will generate drag friction when the iron 2 is displaced, causing wear marks on the bottom surface of the iron 2. Over time, this will accelerate the wear of the iron 2.

[0037] Because the gravel base layer itself is composed of gravel, the surface of the gravel layer is uneven. If the surface of the gravel layer of the manhole cover is uneven, the protrusion of the stones will not be too large. The protrusion of the stones will abut against one end of the disturbance block 204, and then the disturbance block 204 will be pressed to shrink into the shrinkage groove 2032. Because the protrusion of the stones will not be too large, after the disturbance block 204 shrinks into the shrinkage groove 2032 to a certain extent, the stones that are not too protruding will pass through the rotating roller 203 and enter the bottom of the ironing device 2. This will allow the rotating roller 203 to only disturb the stones that are too protruding, and also avoid the stones that are too large protruding on the surface, affecting the flatness. The disturbance block 204 layer will be connected to the shrinkage groove 2032 through the return spring 2043, so that after the disturbance block 204 deflects and shrinks, it will automatically reset through the elasticity of the return spring 2043.

[0038] When the disturbance block 204 deflects, the protruding sealing block 2042 on the outer side extends out of the sealing groove 2033. Because both the sealing block 2042 and the sealing groove 2033 are curved, and their curvatures are centered on the through rod 2041, the sealing block 2042 displaces from the center of the sealing groove 2033 when the disturbance block 204 deflects. This extension of the sealing block 2042... When the disturbance block 204 is deflected, its outer side will remain closed with the opening of the contraction groove 2032. This prevents mud and sand from entering the gap between the disturbance block 204 and the contraction groove 2032 after the disturbance block 204 is deflected, thus avoiding affecting the disturbance block 204. Finally, several disturbance blocks 204 are arranged on the through rod 2041. Therefore, several disturbance blocks 204 can disturb the protruding stones at different positions without affecting the stones under the disturbance blocks 204 at other positions.

Claims

1. A structure for preventing material adhesion and wear on the screed of a cement-stabilized crushed stone subbase, comprising a body (1), wherein a material spreader (101) is connected to the bottom of the body (1), and a screed (2) is connected to the bottom of the body (1) near the rear of the material spreader (101), wherein a sloping groove (201) is provided on one side of the bottom of the screed (2), characterized in that, A motor (202) is provided on one side of the iron (2). A rotating roller (203) is rotatably connected to the bottom of the inclined groove (201). A contact groove (2031) is provided on the side wall of the rotating roller (203). A shrinkage groove (2032) is provided on the side wall of the rotating roller (203). A through rod (2041) is rotatably connected to the middle of the shrinkage groove (2032). A disturbance block (204) is connected to the side wall of the through rod (2041).

2. The structure for preventing material adhesion and wear on the screed of a paver in a cement-stabilized crushed stone subbase according to claim 1, characterized in that, The motor (202) also includes a transmission belt (2021) connected to the output end of the motor (202).

3. The structure for preventing material adhesion and wear on the screed of a paver in a cement-stabilized crushed stone subbase according to claim 2, characterized in that, The transmission belt (2021) engages with the round shaft protruding from one end of the rotating roller (203).

4. The structure for preventing material adhesion and wear on the screed of a paver in a cement-stabilized crushed stone subbase according to claim 1, characterized in that, The protruding portion of the rotating roller (203) is on the surface of the chute (201), and the bottom of the rotating roller (203) is parallel to the bottom of the iron (2).

5. The structure for preventing material adhesion and wear on the screed of a paver in a cement-stabilized crushed stone subbase according to claim 1, characterized in that, The contact groove (2031) is an arc-shaped groove extending from one side of the shrinkage groove (2032), and one end of the disturbance block (204) is attached to the connection between the contact groove (2031) and the shrinkage groove (2032).

6. The structure for preventing material adhesion and wear on the screed of a paver in a cement-stabilized crushed stone subbase according to claim 1, characterized in that, The shrinkage groove (2032) is provided with a protrusion on the side of the opening near the through rod (2041) that fits the outside of the disturbance block (204).

7. The structure for preventing material adhesion and wear on the screed of a paver in a cement-stabilized crushed stone subbase according to claim 1, characterized in that, The disturbance block (204) consists of several arranged on the side wall of the through rod (2041), and the disturbance block (204) is a long strip that is bent in accordance with the curvature of the rotating roller (203).

8. The structure for preventing material adhesion and wear on the screed of a paver in a cement-stabilized crushed stone subbase according to claim 1, characterized in that, The shrinkage groove (2032) also includes a sealing groove (2033), which is disposed on the opening side of the shrinkage groove (2032). The sealing groove (2033) is disposed on the opening side of the shrinkage groove (2032) and fits the outer protrusion groove of the disturbance block (204). The sealing groove (2033) is arc-shaped.

9. The structure for preventing material adhesion and wear on the screed of a paver in a cement-stabilized crushed stone subbase according to claim 1, characterized in that, The disturbance block (204) also includes a blocking block (2042) and a reset spring (2043). The blocking block (2042) protrudes from the side wall of the disturbance block (204), and the reset spring (2043) is disposed on one side of the disturbance block (204).

10. The structure for preventing material adhesion and wear on the screed of a paver in a cement-stabilized crushed stone subbase according to claim 9, characterized in that, The sealing block (2042) is an arc-shaped protrusion on the outside of the disturbance block (204) that cooperates with the sealing groove (2033). The reset spring (2043) is located on the side of the disturbance block (204) facing the shrinkage groove (2032), and the side of the disturbance block (204) is connected to the shrinkage groove (2032) through the reset spring (2043).

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