Mechanical pinch roller spacing adjusting mechanism for pinch roller sand barrier

Abstract

The utility model discloses a mechanical pinch roller spacing adjusting mechanism for a pinch roller sand barrier, which comprises a fixed support, lead screws are symmetrically arranged at two ends of the bottom of the fixed support, a grass pressing body is arranged on the fixed support, the grass pressing body comprises a grass curtain support and two extrusion components, the grass curtain support is fixedly connected onto the fixed support, and the two extrusion components are fixedly connected onto the fixed support. A conveying roller is rotationally connected to the straw mat support, and the two extrusion assemblies are symmetrically arranged at the two ends of the fixing support. By arranging the adjustable extrusion assemblies, a worker can change the distance between the two extrusion assemblies, so that the device can be suitable for straw mats with different width specifications, and the straw mats with different thicknesses can be flatly laid on the ground by the extrusion assemblies according to the thickness adjustment of the straw mats. The detachable positioning part is arranged on the lead screw, when the lead screw needs to be rotated, the positioning part is controlled to rotate to drive the lead screw to rotate in the same direction at the same speed, and when the positions of the two extrusion assemblies do not need to be changed, the positioning part is detached from the lead screw to avoid collision in the device moving process.

Description

Technical Field

[0001] This utility model relates to the field of sand barrier laying machinery, and in particular to a mechanism for adjusting the spacing between pressure rollers in a pressure roller sand barrier machine. Background Technology

[0002] Sand barriers are an engineering measure used for windbreak and sand fixation. They are mainly constructed by using materials such as firewood, straw, clay, branches, slats, and pebbles to create barriers on the sand surface to reduce wind speed and stabilize the sand. This measure plays an important role in combating desertification and protecting the ecological environment. Flat-laid sand barriers utilize materials such as firewood, pebbles, clay, or polymers to cover or spray onto the sand surface, isolating it from wind contact with the loose sand layer and preventing wind erosion as sand flows across the surface.

[0003] In existing technologies, sand barriers are laid using roller-driven sand-blocking machinery, which has two rollers and can lay two rows of sand barriers simultaneously. However, in actual sand control and stabilization work, the required spacing between sand barrier rows varies depending on the terrain, landform, and windward location, and existing technologies cannot adjust the distance between the two rollers. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, this utility model provides a pressure roller spacing adjustment mechanism for sand barrier machinery, which can change the distance between two pressure rollers according to the actual situation, thereby changing the row spacing of the sand barrier.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a roller spacing adjustment mechanism for a sand barrier machine, including a loading vehicle, with movable wheels symmetrically arranged at both ends of the loading vehicle, a fixed bracket on the loading vehicle, and lead screws symmetrically arranged at both ends of the bottom of the fixed bracket. A straw pressing body is arranged on the fixed bracket, and the straw pressing body includes a straw curtain bracket and two pressing components. The straw curtain bracket is fixedly connected to the fixed bracket, and a conveying roller is rotatably connected to the straw curtain bracket. The two pressing components are symmetrically arranged at both ends of the fixed bracket.

[0006] As a preferred technical solution of the pressure wheel spacing adjustment mechanism of the sand barrier machinery of this utility model, the extrusion assembly includes a positioning block, which is set on a lead screw away from the forward direction of the device. A connecting part A is hinged on the positioning block, and a cylinder is fixedly connected to the connecting part A. A pressure wheel is rotatably connected to the end of the cylinder near the ground. A connecting part B is hinged on the pressure wheel. A positioning sleeve is provided on the fixed bracket, and the connecting part B is sleeved on the positioning sleeve.

[0007] As a preferred technical solution of the pressure wheel spacing adjustment mechanism of the sand barrier machinery of this utility model, the extrusion assembly also includes a straw curtain guide groove. A limit groove is provided at the bottom end of the fixed bracket near the forward direction of the device. The straw curtain guide groove is slidably connected in the limit groove and connected to the lead screw.

[0008] As a preferred technical solution of the pressure wheel spacing adjustment mechanism of the sand barrier machinery of this utility model, one of the two positioning blocks is provided with an internal thread and is threadedly connected to the connecting screw, and the other is rotatably connected to the screw to keep the horizontal position unchanged.

[0009] As a preferred technical solution of the pressure wheel spacing adjustment mechanism of the sand barrier machinery of this utility model, either of the two straw curtain guide grooves is provided with an internal thread and is threadedly connected to the connecting screw. The straw curtain guide groove with the internal thread and the positioning block with the internal thread are located at the same end.

[0010] As a preferred technical solution of the pressure wheel spacing adjustment mechanism of the pressure wheel sand barrier machinery of this utility model, the threads at both ends of the lead screw have opposite directions of rotation.

[0011] As a preferred technical solution of the pressure wheel spacing adjustment mechanism for sand barrier machinery of this utility model, both positioning blocks are provided with internal threads and are symmetrically arranged at both ends of the connected lead screw and connected to it by threads.

[0012] As a preferred technical solution of the pressure wheel spacing adjustment mechanism for sand barrier machinery of this utility model, both straw curtain guide grooves are provided with internal threads and are symmetrically arranged at both ends of the connected lead screw and connected to it by threads.

[0013] As a preferred technical solution of the pressure wheel spacing adjustment mechanism for sand barrier machinery of this utility model, a rocker handle is provided on the lead screw.

[0014] As a preferred technical solution of the pressure wheel spacing adjustment mechanism for sand barrier machinery of this utility model, the lead screw is provided with a limiting part, the limiting part is detachably connected with a positioning part, and the positioning part is provided with a rocker handle.

[0015] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0016] 1. By setting adjustable extrusion components, workers can change the distance between the two extrusion components, so that the device can be used for straw mats of different widths and the extrusion components can be adjusted according to the thickness of the straw mats so that straw mats of different thicknesses can be laid flat on the ground.

[0017] 2. By setting a detachable positioning part on the lead screw, the positioning part can be controlled to rotate when the lead screw needs to be rotated, thereby driving the lead screw to rotate in the same direction and at the same speed. When it is not necessary to change the position of the two extrusion components, the positioning part can be removed from the lead screw to avoid accidental collisions during the movement of the device. Attached Figure Description

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

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of the fixed bracket of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the straw curtain support of this utility model;

[0022] Figure 5 This is a schematic diagram of the extrusion assembly of this utility model. Figure 1 ;

[0023] Figure 6 This is a schematic diagram of the extrusion assembly of this utility model. Figure 2 ;

[0024] Figure 7 This is a schematic diagram of the lead screw structure of this utility model. Figure 1 ;

[0025] Figure 8 This is a schematic diagram of the lead screw structure of this utility model. Figure 2 .

[0026] The components are as follows: 1. Fixed bracket; 11. Limiting groove; 12. Positioning sleeve; 2. Straw curtain bracket; 21. Conveying roller; 3. Positioning block; 31. Connecting part A; 32. Cylinder; 33. Pressure roller; 34. Connecting part B; 4. Straw curtain guide groove; 5. Lead screw; 51. Handle; 52. Limiting part; 53. Positioning part; 6. Loading vehicle; 61. Moving wheel. Detailed Implementation

[0027] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this utility model. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0028] This application includes a loading vehicle 6 for storing straw mats, identical to existing technology. The loading vehicle 6 has symmetrically arranged casters 61 at both ends. The loading vehicle 6 is detachably connected to the vehicle head. A support assembly is provided near the vehicle head to prevent the loading vehicle 6 from tilting downwards and contacting the ground when not connected to the vehicle head. A rectangular fixed bracket 1 is provided on the loading vehicle 6. Screws 5 are symmetrically arranged at both ends of the bottom of the fixed bracket 1, and the screws 5 are rotatably connected to the fixed bracket 1. A limit groove 11 is provided at the bottom end of the fixed bracket 1 in the forward direction of the device. The fixed bracket 1 is provided with... Figure 1 The shown straw pressing body includes a straw mat support 2, which is located inside and fixedly connected to the fixed support 1. Figure 2 The straw mat support 2 shown is rotatably connected to a conveyor roller 21 for transporting the straw mat downwards. The straw mat hanging on it is transported by the rotation of the conveyor roller 21. Since the rotation direction of the conveyor roller 21 is the same as the movement direction of the straw mat, the friction between the straw mat and the straw mat support 2 is reduced, thus making the transport of the straw mat smoother.

[0029] The straw-pressing body also includes two such as Figure 4 The pressing assembly shown is used to press the straw mat to the ground. Two pressing assemblies are symmetrically arranged at both ends of the fixed bracket 1. Each pressing assembly includes a positioning block 3, which is mounted on a lead screw 5. One of the positioning blocks 3 has an internal thread that connects to the external thread of the lead screw 5, allowing the rotating lead screw 5 to move the positioning block 3 horizontally along the length of the lead screw 5, thereby changing the distance between the two positioning blocks 3. A connecting part A31 is hinged to the positioning block 3. A cylinder 32 is connected to one end of the connecting part A31 near the ground. One end of the cylinder 32 is fixedly connected to the connecting part A31, and a pressure roller 33 is rotatably connected to the other end. The vertical height of the pressure roller 33 is changed by changing the length of the cylinder 32. A connecting part B34 is hinged to the pressure roller 33. One end of the connecting part B34 is hinged to the pressure roller 33, and the other end of the connecting part B34 is mounted on the fixed bracket 1. The fixed bracket 1 is provided with... Figure 4The positioning sleeve 12 shown has a connecting part B34 sleeved on it. The movement trajectory of the pressure roller 33 is an arc with the axis of the positioning sleeve 12 as the center and the length of the connecting part B34 as the radius, through the cooperation between the connecting part B34 and the connecting part A31. The extrusion assembly also includes a straw mat guide groove 4, which is mounted on a lead screw 5 located within a limiting groove 11. One of the straw mat guide grooves 4 has an internal thread that engages with the external thread of the lead screw 5 to achieve horizontal movement. The straw mat guide groove 4 with the internal thread and the positioning block 3 with the internal thread are located on the same end face. The top of the straw mat guide groove 4 is rectangular and located within the limiting groove 11, allowing it to move only horizontally within the limiting groove 11. The bottom of the limiting groove 11 is an inclined guide plate. The straw mat moves downward via the conveying roller 21 and fits against the guide plate. By adjusting the position of the pressure roller 33, one end of the straw mat fits against the guide plate, and the other end fits against the pressure roller 33, thus ensuring that the straw mat can be laid flat on the ground. At the same time, the distance between the pressure roller 33 and the ground is the same as or slightly less than the thickness of the straw mat by 1-5 mm, thereby using the rotating pressure roller 33 to perform secondary flattening of the straw mat laid on the ground. To facilitate the operation of the lead screw 5, a crank handle 51 is provided on the lead screw 5. The operator can drive the lead screw 5 to rotate in the same direction and at the same speed by operating the crank handle 51.

[0030] When using this device, rotating the two lead screws 5 changes the horizontal movement of one of the positioning blocks 3 and the straw mat guide groove 4, while keeping the remaining positioning block 3 and the straw mat guide groove 4 fixed in the horizontal direction. This changes the distance between the two pressure rollers 33 and the two straw mat guide grooves 4, thereby adjusting the device to accommodate straw mats of different widths. The device can also be adapted to different widths of straw mats. At the same time, the position of the pressure rollers 33 is changed according to the thickness of the straw mat, so that the pressure rollers 33 can cooperate with the straw mat guide grooves 4 to compress the straw mat. The straw mat is transported by the conveying rollers 21 along the outer surface of the guide plate at the bottom of the straw mat guide groove 4 and laid on the ground.

[0031] Furthermore, to improve the adjustment efficiency of the two extrusion components, the threads at both ends of the lead screw 5 rotate in opposite directions. Simultaneously, both positioning blocks 3 and both straw mat guide grooves 4 are equipped with internal threads. By rotating the lead screw 5, the distance between the two positioning blocks 3 or the two straw mat guide grooves 4 located at both ends of the lead screw 5 can be changed simultaneously, thereby improving the adjustment efficiency of the device.

[0032] Furthermore, to prevent the crank handle 51 from colliding with obstacles on the ground during device movement, causing the lead screw 5 to rotate unexpectedly, the lead screw 5 is as follows: Figure 7The social freedom limiting part 52 shown can be rectangular, triangular, petal-shaped, or other non-circular structures. A positioning part 53 is inserted into the limiting part 52. The positioning part 53 is the same shape and size as the limiting part 52 and is magnetically fixed to the limiting part 52. A crank handle 51 is fixed to the positioning part 53. When the worker needs to adjust the horizontal position of the pressure roller 33 or the straw curtain guide groove 4, the positioning part 53 is inserted into the limiting part 52 and fixed. The crank handle 51 on the positioning part 53 drives the lead screw 5 to rotate in the same direction and at the same speed. When the lead screw 5 does not need to be adjusted, the positioning part 53 is removed from the limiting part 52 to prevent the crank handle 51 from being accidentally hit.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanism for adjusting the spacing of pressure rollers in a sand barrier machine, comprising a loading vehicle (6), with movable wheels (61) symmetrically arranged at both ends of the loading vehicle (6), a fixed bracket (1) on the loading vehicle (6), and lead screws (5) symmetrically arranged at both ends of the bottom of the fixed bracket (1), characterized in that: The fixed support (1) is provided with a grass pressing body, which includes a grass curtain support (2) and two pressing components. The grass curtain support (2) is fixedly connected to the fixed support (1), and a conveying roller (21) is rotatably connected to the grass curtain support (2). The two pressing components are symmetrically arranged at both ends of the fixed support (1).

2. The roller spacing adjustment mechanism for a sand barrier machine according to claim 1, characterized in that: The extrusion assembly includes a positioning block (3), which is set on a lead screw (5) away from the forward direction of the device. A connecting part A (31) is hinged on the positioning block (3), and a cylinder (32) is fixed on the connecting part A (31). A pressure roller (33) is rotatably connected to the end of the cylinder (32) near the ground. A connecting part B (34) is hinged on the pressure roller (33). A positioning sleeve (12) is provided on the fixed bracket (1), and the connecting part B (34) is sleeved on the positioning sleeve (12).

3. The roller spacing adjustment mechanism for a sand barrier machine according to claim 2, characterized in that: The extrusion assembly also includes a straw curtain guide groove (4), and a limit groove (11) is provided at the bottom end of the fixed bracket (1) near the forward direction of the device. The straw curtain guide groove (4) is slidably connected in the limit groove (11) and connected to the lead screw (5).

4. The roller spacing adjustment mechanism for a sand barrier machine according to claim 3, characterized in that: One of the two positioning blocks (3) is provided with an internal thread and is threadedly connected to the connecting lead screw (5), while the other is rotatably connected to the lead screw (5) to maintain a horizontal position.

5. The roller spacing adjustment mechanism for a sand barrier machine according to claim 3, characterized in that: Either of the two straw curtain guide grooves (4) is provided with an internal thread and is threadedly connected to the connecting screw (5). The straw curtain guide groove (4) with the internal thread is located at the same end as the positioning block (3) with the internal thread.

6. The roller spacing adjustment mechanism for a sand barrier machine according to claim 3, characterized in that: The threads at both ends of the lead screw (5) are rotated in opposite directions.

7. The roller spacing adjustment mechanism for a sand barrier machine according to claim 6, characterized in that: Both positioning blocks (3) are provided with internal threads and are symmetrically arranged at both ends of the connected lead screw (5) and threadedly connected to it.

8. The roller spacing adjustment mechanism for a sand barrier machine according to claim 6, characterized in that: Both straw curtain guide grooves (4) are provided with internal threads and are symmetrically arranged at both ends of the connected lead screw (5) and connected to it by threads.

9. A mechanism for adjusting the spacing between pressure rollers in a sand barrier machine according to claim 1 or 6, characterized in that: A crank handle (51) is provided on the lead screw (5).

10. A mechanism for adjusting the spacing between pressure rollers in a sand barrier machine according to claim 1 or 6, characterized in that: The lead screw (5) is provided with a limiting part (52), and a positioning part (53) is detachably connected to the limiting part (52), and a rocker handle (51) is provided on the positioning part (53).

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