CN218373882U - Grass square sand barrier laying device - Google Patents

Abstract

The utility model discloses a grass square sand barrier laying device, include: the frame, the frame front portion is equipped with the front wheel, the frame rear portion is equipped with the rear wheel, be equipped with the axletree between two rear wheels, fixed first sprocket on the axletree, be equipped with main bearing roller on the frame, vice bearing roller, the main compression roller, vice compression roller, install the second sprocket on the main bearing roller, the third sprocket, the fourth sprocket is fixed mutually with the main bearing roller, the fourth sprocket is rotatable to be installed on the main bearing roller, fourth sprocket and first sprocket pass through chain drive, be equipped with first clutch between main bearing roller and the fourth sprocket, be equipped with fork shifting mechanism on the frame, fixed fifth sprocket on the vice bearing roller, fifth sprocket and third sprocket pass through chain drive, install the sixth sprocket on the main compression roller, sixth sprocket and second sprocket pass through chain drive, be equipped with grass pressing blade disc and blade disc elevating system on the frame lower part behind the main compression roller. The laying device has the advantages of simple structure, low cost, simple operation, labor saving, small volume and high laying efficiency.

Description

Grass square sand barrier laying device

Technical Field

The utility model relates to a sand control equipment field, concretely relates to grass square sand barrier laying device.

Background

The ecological environment treatment work in China is effectively and continuously promoted, wherein the desertification control project is always a difficult link, and the laying of grass square sand barriers is one of the main modes of desertification control. Present grass square is laid and is mostly transported the grass curtain book to job site with the vehicle, has spread the grass curtain by the manpower on sand ground, then has impressed the grass curtain sand soil through the spade, has just so obtained a grass limit of grass square sand barrier, has laid the horizontal grass limit of grass square sand barrier earlier usually, then is laying the vertical grass limit of grass square sand barrier, just so can obtain grass square sand barrier.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: will provide a simple structure, with low costs, easy operation, use manpower sparingly, small, lay efficient grass square sand barrier laying device.

In order to solve the above problem, the utility model discloses the technical scheme who adopts does: grass square sand barrier laying device includes: the frame, its characterized in that: the front wheel for supporting the front part of the frame is arranged below the front part of the frame, the left side and the right side below the rear part of the frame are respectively provided with a rear wheel for supporting the rear part of the frame, an axle is arranged between the two rear wheels, the axle is arranged on the frame through a bearing, the two rear wheels are respectively and fixedly arranged at the two ends of the axle, a first chain wheel is fixed on the axle, the two rear wheels can drive the first chain wheel to rotate through the axle after rotating, the frame is also provided with a main carrier roller, an auxiliary carrier roller, a main compression roller and an auxiliary compression roller, the main carrier roller, the auxiliary compression roller and the auxiliary compression roller are respectively arranged in a left-right direction, the main carrier roller, the auxiliary carrier roller, the main compression roller and the auxiliary compression roller are respectively and rotatably arranged on the frame, the main carrier roller is positioned in front of the auxiliary carrier roller, the main compression roller is positioned in front of the main carrier roller, and the auxiliary compression roller is positioned above the main compression roller, the main carrier roller and the auxiliary carrier roller can support a straw curtain roll placed between the main carrier roller and the auxiliary carrier roller, a second chain wheel, a third chain wheel and a fourth chain wheel are installed on the main carrier roller and are fixed with the main carrier roller, the fourth chain wheel is rotatably installed on the main carrier roller through a bearing, the fourth chain wheel and the first chain wheel are driven through a chain, a first clutch is arranged between the main carrier roller and the fourth chain wheel, a shifting fork mechanism used for driving the first clutch to be engaged or disengaged is arranged on the frame, after the first clutch is engaged, the fourth chain wheel can drive the main carrier roller to rotate, after the first clutch is disengaged, the fourth chain wheel cannot drive the main carrier roller to rotate, a fifth chain wheel is fixed on the auxiliary carrier roller, the fifth chain wheel and the third chain wheel are driven through the chain, so that the main carrier roller can drive the auxiliary carrier roller to rotate together, and after the main carrier roller and the auxiliary carrier roller rotate, the straw curtain roll placed between the main carrier roller and the auxiliary carrier roller can be driven to unwind, the grass pressing device comprises a main press roll, a second press roll, a third chain wheel, a fourth chain wheel, a fifth chain wheel, a sixth chain wheel, a second chain wheel and a fifth chain wheel, wherein the sixth chain wheel is arranged at one end of the main press roll and is in transmission connection with the main press roll, the sixth chain wheel and the second chain wheel are in chain transmission, so that the main press roll can drive the main press roll to rotate together, the main press roll can be matched with the auxiliary press roll to pull a grass curtain which is unreeled, the grass curtain can move downwards and flatly paved on the ground after passing through the main press roll and the auxiliary press roll, a rotatable grass pressing cutter head and a cutter head lifting mechanism which can drive the grass pressing cutter head to move upwards and downwards are arranged on the lower portion of a frame behind the main press mechanism, the middle portion of the grass curtain flatly paved on the ground can be pressed into sand, the left side and the right side of the grass curtain can be erected, and the whole grass curtain can be pressed into a grass grid sand barrier after the grass pressing cutter head rolls forwards under the driving of the frame.

Further, aforementioned grass square sand barrier laying device, wherein: the first clutch is a jaw clutch, the first clutch is composed of first half clutches with teeth on two end faces, the two first half clutches are respectively a first main half clutch and a first auxiliary half clutch, the first main half clutch can be sleeved on the main carrier roller in a left-right sliding mode, the first main half clutch can be matched with a polygonal section on the main carrier roller through a polygonal inner hole in the first main half clutch and can be in transmission with the main carrier roller, the first auxiliary half clutch is fixed with the fourth chain wheel, and after the first main half clutch moves towards the first auxiliary half clutch under the driving of the shifting fork mechanism, the teeth on the end faces of the first main half clutch and the second main half clutch can be embedded with each other, so that the first clutch is engaged.

Further, aforementioned grass square sand barrier lays device, wherein: the structure of shift fork mechanism includes: the shifting frame can be installed on the frame in a sliding mode, a hand shifting rod and a shifting fork are arranged on the shifting frame, the shifting frame can be driven manually to move left and right through a hand shifting rod, an annular groove is formed in the side wall of the outer ring of the first main half clutch, one end of the shifting fork is inserted into the annular groove, the shifting fork cannot hinder the first main half clutch to rotate, and the shifting fork can drive the first main half clutch to move left and right.

Further, aforementioned grass square sand barrier laying device, wherein: the sixth chain wheel is rotatably arranged at one end of the main compression roller through a bearing, a second clutch is arranged between the sixth chain wheel and the main compression roller and is also a jaw clutch, the second clutch consists of second half clutches with teeth on two end faces, the two second half clutches are respectively a second main half clutch and a second auxiliary half clutch, the second main half clutch can be sleeved at one end of the main compression roller in a left-right sliding manner, the second main half clutch can be matched with the polygonal section on the main compression roller through a polygonal inner hole on the second main half clutch and can be driven by the main compression roller, the second auxiliary half clutch is fixed with a hand wheel, the second main half clutch and the main compression roller can be driven to rotate through the hand wheel, the second auxiliary half clutch is fixed with the sixth chain wheel, the teeth on the two end faces of the second main half clutch and the second auxiliary half clutch are engaged, the sixth chain wheel can be driven to rotate with the main compression roller, a spring seat positioned at the outer side of the second main half clutch is arranged on the main compression roller, a compression spring seat is arranged on the main compression roller, and a compression spring seat is arranged between the main half clutch and the main compression roller, and the main compression spring seat is sleeved on the main compression roller, and the main compression spring seat.

Further, aforementioned grass square sand barrier laying device, wherein: the structure of the axle includes: the differential mechanism comprises a differential mechanism with a left rotating shaft and a right rotating shaft, a short shaft and a long shaft, wherein the short shaft and the long shaft are respectively positioned at the left side and the right side of the differential mechanism, the short shaft and the long shaft are respectively and coaxially connected with the rotating shaft of the differential mechanism at the side where the short shaft and the long shaft are positioned, and a first chain wheel is fixed with the differential mechanism.

Further, aforementioned grass square sand barrier laying device, wherein: the frame is provided with a press roller seat capable of sliding up and down, the auxiliary press roller is rotatably arranged on the press roller seat, and a tightening spring is arranged between the press roller seat and the frame, so that the auxiliary press roller and the main press roller can elastically clamp the straw curtain.

Further, aforementioned grass square sand barrier laying device, wherein: the front wheel is provided with one and is positioned in the middle of the front part of the frame.

Further, aforementioned grass square sand barrier laying device, wherein: two positioning discs for positioning the straw curtain roll left and right are fixedly sleeved on the main carrier roller and the auxiliary carrier roller.

Further, aforementioned grass square sand barrier laying device, wherein: the cutter lifting mechanism is a hand-operated jack.

The utility model has the advantages that: the grass square grid sand barrier laying device is high in semi-automation degree, the unreeling, the laying and the compaction of the grass curtain can be realized only by one person, the laying efficiency is high, the operation is simple, and the manpower is saved; the device has small volume and low material cost; the chain wheel and the chain are used for transmission, the structure is simple, the installation and the maintenance are convenient, the buffering and damping performance is better, and the chain wheel is suitable for operation in severe sandy soil environments.

Drawings

Fig. 1 is a schematic structural view of the grass square sand barrier laying device of the present invention.

FIG. 2 isbase:Sub>A schematic sectional view of the A-A step of FIG. 1.

Fig. 3 is a schematic view of the structure in the direction B in fig. 2.

FIG. 4 is a schematic structural view of the section C-C in FIG. 1.

Fig. 5 is an enlarged schematic view of the structure at D in fig. 2.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.

As shown in fig. 1, 2, 3 and 4, the grass grid sand barrier laying device comprises: the front wheel 2 for supporting the front part of the frame 1 is arranged below the front part of the frame 1, the rear wheels 3 for supporting the rear part of the frame 1 are respectively arranged on the left side and the right side below the rear part of the frame 1, an axle 4 is arranged between the two rear wheels 3, the axle 4 is arranged on the frame 1 through a bearing, the two rear wheels 3 are respectively and fixedly arranged at the two ends of the axle 4, a first chain wheel 5 is fixed on the axle 4, the first chain wheel 5 can be driven by the axle 4 to rotate after the two rear wheels 3 rotate, the frame 1 is also provided with a main carrier roller 6, an auxiliary carrier roller 7, a main compression roller 8 and an auxiliary compression roller 9, the main carrier roller 6, the auxiliary carrier roller 7, the main compression roller 8 and the auxiliary compression roller 9 are all arranged in the left-right direction, the main carrier roller 6, the auxiliary carrier roller 7, the main compression roller 8 and the auxiliary compression roller 9 are respectively and rotatably arranged on the frame 1 through bearings, the main carrier roller 6 is positioned in front of the auxiliary carrier roller 7, the main press roller 8 is positioned in front of the main carrier roller 6, the auxiliary press roller 9 is positioned above the main press roller 8, the main carrier roller 6 and the auxiliary carrier roller 7 can support a straw curtain roll 10 placed between the main carrier roller 6 and the auxiliary carrier roller, a second chain wheel 11, a third chain wheel 12 and a fourth chain wheel 13 are installed on the main carrier roller 6, the second chain wheel 11 and the third chain wheel 12 are fixed with the main carrier roller 6, the fourth chain wheel 13 is rotatably installed on the main carrier roller 6 through a bearing, the fourth chain wheel 13 and the first chain wheel 5 are driven through a chain, a first clutch is arranged between the main carrier roller 6 and the fourth chain wheel 13, a shifting fork mechanism for driving the first clutch to be engaged or disengaged is arranged on the frame 1, after the first clutch is engaged, the fourth chain wheel 13 can drive the main carrier roller 6 to rotate, after the first clutch is disengaged, the fourth chain wheel 13 cannot drive the main carrier roller 6 to rotate, a fifth chain wheel 15 is fixed on the auxiliary carrier roller 7, the fifth chain wheel 15 and the third chain wheel 12 are in chain transmission, so that the main carrier roller 6 can drive the auxiliary carrier roller 7 to rotate together, the main carrier roller 6 and the auxiliary carrier roller 7 can drive a straw screen roll 10 placed between the main carrier roller 6 and the auxiliary carrier roller to unreel after rotating, one end of the main pressure roller 8 is provided with a sixth chain wheel 16, the sixth chain wheel 16 is in transmission connection with the main pressure roller 8, the sixth chain wheel 16 and the second chain wheel 11 are in chain transmission, so that the main carrier roller 6 can drive the main pressure roller 8 to rotate together, the main pressure roller 8 can be matched with the auxiliary pressure roller 9 to pull the unreeled straw screen after rotating, the straw screen can move downwards to be laid on the ground after passing through the main pressure roller 8 and the auxiliary pressure roller 9, a rotatable straw pressing cutter head 17 and a cutter head lifting mechanism 18 capable of driving the straw pressing cutter head 17 to move upwards and downwards are arranged on the middle of the straw laid on the ground, so that the middle of the straw cutter head can be inserted into the middle of the straw screen, and the straw pressing plate can be pressed by left and right sides of the straw screen roll, and the straw screen strip lifting frame, and the straw screen strip can be lifted up after being driven by the straw pressing mechanism 17, and the straw pressing machine frame.

As shown in fig. 5, in this embodiment, the first clutch is a dog clutch, the first clutch is composed of a first half clutch having teeth on two end surfaces, the two first half clutches are a first main half clutch 141 and a first auxiliary half clutch 142, respectively, the first main half clutch 141 is slidably sleeved on the main idler 6 from left to right, the first main half clutch 141 can be matched with a polygonal section on the main idler 6 through a polygonal inner hole on the first main half clutch 141 to transmit with the main idler 6, the first auxiliary half clutch 142 is fixed with the fourth sprocket 13, when the first main half clutch 141 moves towards the first auxiliary half clutch 142 under the driving of the shift fork mechanism, the teeth on the two end surfaces can be engaged, so that the first clutch is engaged, and when the first main half clutch 141 moves away from the first auxiliary half clutch 142 under the driving of the shift fork mechanism to disengage the teeth on the two end surfaces, the first clutch is disengaged.

The structure of shift fork mechanism includes: the shifting frame 19 is installed on the frame 1 in a left-right sliding mode, a hand shifting rod 191 and a shifting fork 192 are arranged on the shifting frame 19, the shifting frame 19 can be driven to move left and right manually through the hand shifting rod 191, an annular groove is formed in the side wall of the outer ring of the first main half clutch 141, one end of the shifting fork 192 is inserted into the annular groove, and therefore the shifting fork 192 does not hinder the first main half clutch 141 to rotate, but can drive the first main half clutch 141 to move left and right together.

As shown in fig. 2 and 3, the sixth sprocket 16 is rotatably mounted on one end of the main pressure roller 8 by a bearing, a second clutch is arranged between the sixth chain wheel 16 and the main compression roller 8, the second clutch is also a jaw clutch, the second clutch is composed of second half clutches with teeth on two end surfaces, the two second half clutches are a second main half clutch 20 and a second auxiliary half clutch 21 respectively, the second main half clutch 20 can be sleeved on one end of the main compression roller 8 in a left-right sliding manner, and the second main half clutch 20 can be matched with the polygonal section on the main press roller 8 through the polygonal inner hole on the second main half clutch 20 to be transmitted with the main press roller 8, the second main half clutch 20 is fixed with a hand wheel 22, the second main half clutch 20 and the main press roller 8 can be driven to rotate by the hand wheel 22, the second auxiliary half clutch 21 is fixed with the sixth sprocket 16, teeth on the end surfaces of the second main half clutch 20 and the second auxiliary half clutch 21 are embedded, the second clutch is engaged, the sixth sprocket 16 can be driven with the main press roller 8, a spring seat 23 is arranged on the main pressure roller 8 outside the second main clutch half 20, a compression spring 24 is sleeved on the end part of the main pressure roller 8 between the spring seat 23 and the second main half clutch 20, the compression spring 24 can press the second main half clutch 20, so that the second clutch can keep a connection state, the teeth between the second main half clutch 20 and the second auxiliary half clutch 21 can be disengaged after the second main half clutch 20 is driven to be far away from the second auxiliary half clutch by external force overcoming the elastic force of the compression spring 24, so that the second clutch is in a disengaged state, and after the rocking hand wheel 22 drives the second main half clutch 20 to rotate, the main pressure roller 8 can be driven to rotate, but the sixth chain wheel 16 cannot be driven to rotate.

As shown in fig. 2, the axle 4 includes: a differential 26 with two left and right rotating shafts, a short shaft 25 and a long shaft 27, wherein the short shaft 25 and the long shaft 27 are respectively positioned at the left and right sides of the differential 26, the short shaft 25 and the long shaft 27 are respectively coaxially connected with the rotating shaft of the differential 26 at the side where the short shaft 25 and the long shaft 27 are positioned, and the first chain wheel 5 is fixed with the differential 26. When the grass square sand barrier laying device is dragged to turn, the two rear wheels 3 can obtain different rotating speeds through the differential 26, so that the turning can be smooth.

As shown in fig. 3, a roller seat 28 capable of sliding up and down is arranged on the vehicle frame 1, a guide rod is arranged on the vehicle frame 1, the guide rod penetrates through the roller seat 28 to guide the roller seat 28, the auxiliary roller 9 is rotatably arranged on the roller seat 28, and a tightening spring 29 is arranged between the roller seat 28 and the vehicle frame 1, so that the auxiliary roller 9 and the main roller 8 can elastically clamp the straw curtain.

The front wheel 2 is provided with one and is positioned in the middle of the front part of the frame 1. Two positioning discs 30 for positioning the straw screen roll 10 left and right are fixedly sleeved on the main carrier roller 6 and the auxiliary carrier roller 7. The cutter disc lifting mechanism 18 is a hand-operated jack, the grass pressing cutter disc 17 is arranged on the jack through a bearing, and in practical application, the cutter disc lifting mechanism 18 can also be an electric jack.

During operation, will grass square yarn barrier pave the frame in the device and link to each other with the trailer, make the trailer can drag grass square yarn barrier laying device move on sand, when beginning, first on the frame, the second clutch all is in the engaged state, then place grass curtain book 10 between main bearing roller 6 and vice bearing roller 7, pass between main compression roller 8 and vice bearing roller 9 with the book head of grass curtain book 10 after that, then hand jack, make and press grass blade disc 17 to fall to can impress the height in the sand with the grass curtain, start trailer drive frame and walk the straight line after that, two rear wheels 3 can roll and drive first sprocket 5 and take fourth sprocket 13 rotatory, fourth sprocket 13 can take main bearing roller 6 to rotate together, can take vice bearing roller 7 and main compression roller 8 to rotate together after main bearing roller 6 is rotatory, make grass curtain book 10 can unreel, simultaneously under the traction of main compression roller 8 and vice bearing roller 9, the grass curtain that unreels can be located and press grass blade disc 17 before grass to pave sand, the frame that the grass grid can be located the sand barrier and then the sand that the grass is laid on the side is rolled into sand barrier and is laid in sand and is laid the sand, the grid is laid in the sand barrier and is laid the sand and is laid, then the grid is laid on the side and is laid the side to be laid grass grid and is laid in the grass grid and laid, the grass grid and is laid, the grass grid is laid on the side usually, then the side is laid.

When the grass square sand barriers do not need to be laid, the grass pressing cutter head 17 can be retracted through the jack, a worker can separate the first clutch through the shifting fork mechanism, and therefore when the frame 1 is dragged to move, the main carrier roller 6 cannot be driven to rotate by the rear wheels 3, the grass curtain roll 10 cannot be unreeled, and the grass curtain cannot be dragged by the main compression roller 8 and the auxiliary compression roller 9.

The second main half clutch 20 is driven to be far away from the second auxiliary half clutch 21 by external force overcoming the elastic force of the compression spring 24, so that teeth between the second main half clutch 20 and the second auxiliary half clutch 21 are separated, after the second clutch is in a separated state, the main pressing roller 8 can be driven to rotate after the hand wheel 22 is shaken to drive the second main half clutch 20 to rotate, but the sixth chain wheel 16 cannot be driven to rotate, so that the main supporting roller 6 cannot be driven to rotate, and at the moment, the hand wheel 22 is shaken to drive the main pressing roller 8 to rotate, so that the residual straw mat can be pulled out.

Claims (9)

1. Grass square sand barrier laying device includes: the frame, its characterized in that: a front wheel for supporting the front part of the frame is arranged below the front part of the frame, a rear wheel for supporting the rear part of the frame is respectively arranged at the left side and the right side below the rear part of the frame, an axle is arranged between the two rear wheels, the axle is arranged on the frame through a bearing, the two rear wheels are respectively and fixedly arranged at the two ends of the axle, a first chain wheel is fixed on the axle, the two rear wheels can drive the first chain wheel to rotate through the axle after rotating, the frame is also provided with a main carrier roller, an auxiliary carrier roller, a main compression roller and an auxiliary compression roller which are arranged in the left-right direction, the main carrier roller, the auxiliary carrier roller, the main compression roller and the auxiliary compression roller are respectively and rotatably arranged on the frame, the main carrier roller is positioned in front of the auxiliary carrier roller, the main compression roller is positioned in front of the main carrier roller, the auxiliary compression roller is positioned above the main compression roller, and the main carrier roller and the auxiliary carrier roller can support a straw curtain roll placed between the main carrier roller and the auxiliary carrier roller, a second chain wheel, a third chain wheel and a fourth chain wheel are arranged on the main carrier roller, the second chain wheel, the third chain wheel and the main carrier roller are fixed, the fourth chain wheel is rotatably arranged on the main carrier roller through a bearing, the fourth chain wheel and the first chain wheel are driven through a chain, a first clutch is arranged between the main carrier roller and the fourth chain wheel, a shifting fork mechanism for driving the first clutch to be engaged or disengaged is arranged on the frame, a fifth chain wheel is fixed on the auxiliary carrier roller, the fifth chain wheel and the third chain wheel are driven by a chain, a sixth chain wheel is arranged at one end of the main pressing roller and is in transmission connection with the main pressing roller, the sixth chain wheel and the second chain wheel are driven by the chain, the lower part of the frame behind the main compression roller is provided with a rotatable grass pressing cutter head and a cutter head lifting mechanism which can drive the grass pressing cutter head to move up and down.

2. A grass grid sand barrier laying apparatus as claimed in claim 1 wherein: the first clutch is a jaw clutch, the first clutch is composed of first half clutches with teeth on two end faces, the two first half clutches are respectively a first main half clutch and a first auxiliary half clutch, the first main half clutch can be sleeved on the main carrier roller in a left-right sliding mode, the first main half clutch can be matched with a polygonal section on the main carrier roller through a polygonal inner hole in the first main half clutch and can be transmitted with the main carrier roller, the first auxiliary half clutch is fixed with the fourth chain wheel, when the first main half clutch moves towards the first auxiliary half clutch under the driving of the shifting fork mechanism, the teeth on the end faces of the first main half clutch and the second main half clutch can be embedded, and the first clutch is enabled to be engaged.

3. A grass grid sand barrier laying apparatus as claimed in claim 2, wherein: the structure of shift fork mechanism includes: the shifting frame can be installed on the frame in a sliding mode, a hand shifting rod and a shifting fork are arranged on the shifting frame, the shifting frame can be driven to move left and right manually through the hand shifting rod, an annular groove is formed in the side wall of the outer ring of the first main half clutch, one end of the shifting fork is inserted into the annular groove, the shifting fork cannot prevent the first main half clutch from rotating, and the first main half clutch can be driven to move left and right.

4. A grass grid sand barrier installation according to claim 1, 2 or 3, characterised in that: the sixth chain wheel is rotatably arranged at one end of the main compression roller through a bearing, a second clutch is arranged between the sixth chain wheel and the main compression roller and is also a jaw clutch, the second clutch consists of second half clutches with teeth on two end faces, the two second half clutches are respectively a second main half clutch and a second auxiliary half clutch, the second main half clutch can be sleeved at one end of the main compression roller in a left-right sliding manner, the second main half clutch can be matched with the polygonal section on the main compression roller through a polygonal inner hole on the second main half clutch and can be driven by the main compression roller, the second auxiliary half clutch is fixed with a hand wheel, the second main half clutch and the main compression roller can be driven to rotate through the hand wheel, the second auxiliary half clutch is fixed with the sixth chain wheel, the teeth on the two end faces of the second main half clutch and the second auxiliary half clutch are engaged, the sixth chain wheel can be driven to rotate with the main compression roller, a spring seat positioned at the outer side of the second main half clutch is arranged on the main compression roller, a compression spring seat is arranged on the main compression roller, and a compression spring seat is arranged between the main half clutch and the main compression roller, and the main compression spring seat is sleeved on the main compression roller, and the main compression spring seat.

5. A grass grid sand barrier installation according to claim 1, 2 or 3, characterised in that: the structure of the axle includes: the differential mechanism comprises a differential mechanism with a left rotating shaft and a right rotating shaft, a short shaft and a long shaft, wherein the short shaft and the long shaft are respectively positioned at the left side and the right side of the differential mechanism, the short shaft and the long shaft are respectively and coaxially connected with the rotating shaft of the differential mechanism at the side where the short shaft and the long shaft are positioned, and a first chain wheel is fixed with the differential mechanism.

6. A grass grid sand barrier installation according to claim 1, 2 or 3, characterised in that: the frame is provided with a press roller seat capable of sliding up and down, the auxiliary press roller is rotatably arranged on the press roller seat, and a tightening spring is arranged between the press roller seat and the frame, so that the auxiliary press roller and the main press roller can elastically clamp the straw curtain.

7. A grass grid sand barrier laying apparatus as claimed in claim 1 or 2 or 3 wherein: the front wheel is provided with one and is positioned in the middle of the front part of the frame.

8. A grass grid sand barrier laying apparatus as claimed in claim 1 or 2 or 3 wherein: two positioning discs for positioning the straw curtain roll left and right are fixedly sleeved on the main carrier roller and the auxiliary carrier roller.

9. A grass grid sand barrier installation according to claim 1, 2 or 3, characterised in that: the cutter lifting mechanism is a hand-operated jack.

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