CN115321007A

CN115321007A - Protection device for plastic pipeline transportation

Info

Publication number: CN115321007A
Application number: CN202210920844.2A
Authority: CN
Inventors: 陈文其; 程东红
Original assignee: Jiangxi Chenshi Technology Group Co ltd
Current assignee: Jiangxi Chenshi Technology Group Co ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2022-11-11
Anticipated expiration: 2042-08-02
Also published as: CN115321007B

Abstract

The invention provides a protection device for transporting a plastic pipeline, which comprises tripods, two clamping mechanisms and two bearing mechanisms, wherein the two clamping mechanisms are respectively arranged at two ends of the plastic pipeline, each clamping mechanism comprises a sleeve, an outer turntable, a T-shaped rod, an outer pushing block, a pressure plate, an inner turntable, a rotating shaft, an inner pushing block, an L-shaped rod and a driving piece, the plastic pipeline provided with the clamping mechanisms is arranged between the two tripods in a crossing manner, the two clamping mechanisms are respectively connected to the two tripods in a hanging manner through springs, and the bearing mechanisms are arranged on the two tripods and used for bearing the weight of the middle section of the plastic pipeline. The protection device for transporting the plastic pipeline can not only ensure that the plastic pipeline does not collide in the transportation process, but also effectively ensure the external roundness of two ends of the pipeline and the straightness of the middle section of the pipeline.

Description

Protection device for plastic pipeline transportation

Technical Field

The invention relates to the field of pipeline transportation, in particular to a protection device for plastic pipeline transportation.

Background

PVC plastic conduit, especially municipal water pipe, its pipe diameter is great, in the transportation, if do not take corresponding safeguard measure to the pipeline, place or pile up at transportation carriage at will, the pipeline is very easily warp or even break because of collision and extrusion, then at the stringing in-process of later stage, the pipeline that the tip takes place to warp can't be assembled with other pipelines, or even can assemble, also can't guarantee the leakproofness of pipeline interface, and the pipeline that bending deformation takes place for the interlude then can bring the trouble for the stringing.

Disclosure of Invention

The invention aims to provide a protection device for transporting plastic pipelines, which aims to solve the technical problem.

The invention provides a protection device for transporting a plastic pipeline, which comprises a tripod, a clamping mechanism and a bearing mechanism, wherein the tripod is arranged on the supporting mechanism;

the plastic pipeline clamping device comprises two clamping mechanisms, wherein the two clamping mechanisms are respectively arranged at two ends of a plastic pipeline, each clamping mechanism comprises a sleeve, an outer turntable, a T-shaped rod, an outer pushing block, a pressure plate, an inner turntable, a rotating shaft, an inner pushing block, an L-shaped rod and a driving piece, the outer turntable and the sleeve are sequentially coaxially sleeved at one end of the plastic pipeline in a sleeved mode, the outer turntable is in clearance fit with the plastic pipeline, the outer turntable is rotatably connected to the inner wall of the sleeve, the number of the outer pushing blocks is three, the three outer pushing blocks distributed in a circumferential array mode are arranged between the sleeve and the outer wall of the plastic pipeline, the side, far away from the plastic pipeline, of each outer pushing block is connected with a T-shaped rod, each T-shaped rod comprises a push rod and an insert rod, one end of each insert rod is vertically connected to the middle of the push rod, and the other end of each insert rod is movably inserted into a first oblique arc groove of the outer turntable, one end of the push rod is fixedly connected to the outer push block, the other end of the push rod is movably inserted into the sleeve wall, the pressure plate is fixedly connected to the end, close to the end portion of the plastic pipeline, of the sleeve, a cavity groove which is sunk into the plastic pipeline is formed in the middle of the pressure plate, a rotating shaft is connected in the cavity groove in a rotating mode, an inner rotary disc is connected to the rotating shaft in a key mode, three inner push blocks which are distributed in a circumferential array mode are arranged between the cavity groove and the inner wall of the plastic pipeline, the side, close to the cavity groove, of each inner push block is connected with an L-shaped rod, one end of each L-shaped rod is fixedly connected to each inner push block, the other end of each L-shaped rod is movably inserted into a second oblique arc groove of each inner rotary disc, the driving piece is used for driving each outer rotary disc and each inner rotary disc to rotate by a preset angle synchronously, and the outer push block and the inner push block are used for synchronously clamping and holding the inner wall and the outer wall and the inner wall of the sleeve respectively and outer wall of the sleeve in a mode and in a mode Continuously clamping;

the plastic pipeline provided with the clamping mechanisms is placed between the two tripods in a crossing mode, and the two clamping mechanisms are respectively hung on the two tripods through springs;

the supporting mechanism is arranged on the two tripods and used for supporting the weight of the middle section of the plastic pipeline.

The protection device for plastic pipeline transportation provided by the invention has the following beneficial effects:

according to the protection device for transporting the plastic pipeline, the plastic pipeline can be guaranteed not to collide in the transportation process, and the outer roundness of two ends of the pipeline and the straightness of the middle section of the pipeline can be effectively guaranteed; the plastic pipeline is suspended between the two tripods through the spring, so that the plastic pipeline can be effectively prevented from being collided, deformed and broken in the transportation process; and then, the middle section of the plastic pipeline is effectively supported by the supporting mechanism so as to ensure the straightness of the middle section of the plastic pipeline and avoid the bending deformation of the middle section of the plastic pipeline.

In addition, the protection device for transporting the plastic pipeline provided by the invention can also have the following additional technical characteristics:

furthermore, a connecting rod is connected between the disc surface of the outer rotating disc and the rotating shaft, the driving piece comprises a driving cylinder, a piston, a driving rod and a pivot, the driving cylinder is connected to the disc surface of the pressing disc through the pivot, one end of the piston is movably connected into the driving cylinder, the other end of the piston is vertically connected with the driving rod, and the driving rod is movably inserted into the connecting rod.

Furthermore, the number of the connecting rods is three, the three connecting rods are distributed on the disc surface of the outer rotating disc in a circumferential array mode, the connecting rods are L-shaped, one section of each connecting rod is vertically and fixedly connected to the disc surface of the outer rotating disc, the other section of each connecting rod is vertically and fixedly connected to the rotating shaft, three arc grooves distributed in a circumferential array mode are formed in the disc surface of the pressing disc, and the section of each connecting rod, which is vertically connected with the outer rotating disc, is movably inserted into the arc groove.

Further, the inner diameter of a circular ring surrounded by the three outward pushing blocks is equal to the outer diameter of the plastic pipeline.

Furthermore, every two adjacent outer pushing blocks are symmetrically arranged relative to the inner pushing block.

Further, bearing mechanism includes two peg and a plurality of elastic webbing, two the peg spanes to be connected two on the tripod, two peg parallel arrangement is in the top both sides of plastic conduit, two equidistant connection has a plurality of on the peg the elastic webbing, the both ends of elastic webbing articulate respectively two on the peg, the interlude bearing of elastic webbing is in plastic conduit's bottom.

Further, each of said tripods is tetrahedral and comprises six support rods distributed at each side of the tetrahedron.

Further, every fixture all hangs through two the spring is in on the tripod, two the spring symmetry respectively sets up telescopic outer wall both sides, two the one end of spring is in through first lug articulate respectively telescopic outer wall both sides, and the other end articulates through the second lug respectively and is located on two spinal branch vaulting poles of sleeve both sides.

Further, the distance between two second lugs on the same tripod is greater than the distance between two first lugs on the same sleeve, and the distance between two second lugs on the same tripod is greater than the distance between two first lugs on the same side of the sleeve.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of the overall structure of a protection device for transporting plastic pipes according to an embodiment of the present invention;

FIG. 2 is a partial front view of a protective device for transporting plastic tubing according to an embodiment of the present invention;

FIG. 3 is a front view of a clamping mechanism of an embodiment of the present invention;

FIG. 4 is a rear view of the clamping mechanism in an unclamped state according to an embodiment of the invention;

FIG. 5 is a cross-sectional view of a rear view of a clamping mechanism in a non-clamping state in accordance with an embodiment of the present invention;

FIG. 6 is a rear view of the clamping mechanism in a clamping position in accordance with an embodiment of the present invention;

FIG. 7 is a cross-sectional view of a rear view of a clamping state of the clamping mechanism of an embodiment of the present invention;

fig. 8 is a sectional view of a top view of a gripping state of the gripping mechanism of the embodiment of the present invention.

Reference numerals: 10. tripod 101, support rod 20, clamping mechanism 21, sleeve 22, outer rotating disc 221, first oblique arc groove 23, T-shaped rod 24, outer pushing block 25, pressure disc 251, cavity groove 252, arc groove 26, inner rotating disc 261, second oblique arc groove 27, rotating shaft 28, inner pushing block 29, L-shaped rod 210, driving piece 2101, driving cylinder 2102, piston 2103, driving rod 2104, pivot 211, connecting rod 30, supporting mechanism 31, hanging rod 32, elastic belt 40, plastic pipe 50, spring 60, first lug 70 and second lug.

Detailed Description

In order to make the objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1 to 8, an embodiment of the present invention provides a protection device for transporting a plastic pipe, which includes a tripod 10, a clamping mechanism 20 and a supporting mechanism 30.

The number of the clamping mechanisms 20 is two, the two clamping mechanisms 20 are respectively installed at two ends of a plastic pipeline 40, each clamping mechanism 20 comprises a sleeve 21, an outer turntable 22, a T-shaped rod 23, an outer pushing block 24, a pressure plate 25, an inner turntable 26, a rotating shaft 27, an inner pushing block 28, an L-shaped rod 29 and a driving piece 210, the outer turntable 22 and the sleeve 21 are sequentially coaxially sleeved at one end of the plastic pipeline 40, the outer turntable 22 is in clearance fit with the plastic pipeline 40, the outer turntable 22 is rotatably connected to the inner wall of the sleeve 21, the number of the outer pushing blocks 24 is three, three outer pushing blocks 24 distributed in a circumferential array are arranged between the sleeve 21 and the outer wall of the plastic pipeline 40, the side of each outer pushing block 24, which is far away from the plastic pipeline 40, is connected with a T-shaped rod 23, the T-shaped rod 23 comprises a push rod and an insert rod, one end of the insert rod is vertically connected to the middle of the push rod, the other end is movably inserted in the first inclined arc groove 221 of the outer rotating disc 22, one end of the push rod is fixedly connected to the outer push block 24, the other end is movably inserted in the wall of the sleeve 21, the pressure plate 25 is fixedly connected to the end of the sleeve 21 close to the end of the plastic pipeline 40, a cavity groove 251 which is sunk into the plastic pipeline 40 is arranged in the middle of the pressure plate 25, a rotating shaft 27 is rotatably connected in the cavity groove 251, an inner rotating disc 26 is connected to the rotating shaft 27 in a key way, three inner push blocks 28 which are distributed in a circumferential array are arranged between the cavity groove 251 and the inner wall of the plastic pipeline 40, the side of each inner push block 28 close to the cavity groove 251 is connected with an L-shaped rod 29, one end of the L-shaped rod 29 is fixedly connected to the inner push block 28, and the other end is movably inserted in the second inclined arc groove 261 of the inner rotating disc 26, the driving member 210 is configured to drive the outer rotating disc 22 and the inner rotating disc 26 to rotate synchronously by a preset angle, so as to push the outer pushing block 24 and the inner pushing block 28 to synchronously and continuously clamp the inner wall and the outer wall of the sleeve 21, respectively, and the sleeve 21, the outer rotating disc 22, the pressure plate 25, the cavity 251, the inner rotating disc 26, the rotating shaft 27 and the plastic pipe are all coaxially disposed.

It should be noted that the clamping mechanism 20 is used for clamping and protecting two ends of the plastic pipe 40, and can well protect the end portion of the plastic pipe 40, so as to ensure that the excircle of the two ends of the plastic pipe 40 is not damaged, and then is hung on the tripod 10 through the spring 50, so that the plastic pipe 40 can be effectively prevented from colliding with other objects in the transportation process.

Specifically, under the driving action of the driving member 210, the outer dial 22 and the inner dial 26 rotate synchronously, the rotating outer dial 22 pushes the end of the three T-shaped rods 23 connected to the outer pushing blocks 24 to move synchronously toward the direction close to the center line of the plastic pipe 40 with the aid of the three first inclined arc grooves 221, further pushes the outer pushing blocks 24 to press against the outer wall of the plastic pipe 40 and finally wrap the outer wall of the plastic pipe 40, meanwhile, the inner dial 26 rotating synchronously with the outer dial 22 pushes the end of the three L-shaped rods 29 connected to the inner pushing blocks 28 to move synchronously away from the center line of the plastic pipe 40 with the aid of the three second arc grooves 221, and then the two ends of the plastic pipe 40 are clamped in the sleeve 21 by the outer pushing blocks 24 and the inner pushing blocks 28 simultaneously while the outer pushing blocks 24 press against the outer wall of the plastic pipe 40, and the three inner pushing blocks 28 also press synchronously against the inner wall of the plastic pipe 40.

A connecting rod 211 is connected between the plate surface of the outer rotating plate 22 and the rotating shaft 27, the driving member 210 comprises a driving cylinder 2101, a piston 2102, a driving rod 2103 and a pivot 2104, the driving cylinder 2101 is connected to the plate surface of the pressing plate 25 through the pivot 2104, one end of the piston 2102 is movably connected in the driving cylinder 2101, the other end of the piston 2102 is vertically connected with the driving rod 2103, and the driving rod 2103 is movably inserted in the connecting rod 211.

The number of the connecting rods 211 is three, the three connecting rods 211 are distributed on the disc surface of the outer rotating disc 22 in a circumferential array, the connecting rods 211 are L-shaped, one section of each connecting rod is vertically and fixedly connected to the disc surface of the outer rotating disc 22, the other section of each connecting rod is vertically and fixedly connected to the rotating shaft 27, three circular arc grooves 252 are formed in the disc surface of the pressing disc 25 and distributed in a circumferential array, and the section of each connecting rod 211, which is vertically connected with the outer rotating disc 22, is movably inserted into the circular arc groove 252.

The inner wall of sleeve 21 is equipped with a stair face, pressure disk 25 is close to the side of outer carousel 22 is equipped with a boss, carries on spacingly respectively to the both sides of outer carousel 22.

The first and

second arc chute

221 and 261 are respectively obliquely disposed on the disk surfaces of the outer turntable 22 and the inner turntable 26, the distance from the two ends of the first arc chute 221 to the center of the outer turntable 22 is different, the distance from the two ends of the second arc chute 261 to the center of the inner turntable 26 is different, and the central angle formed by the two ends of the first arc chute 221 and the center of the outer turntable 22 is the same as the central angle formed by the two ends of the second arc chute 261 and the center of the inner turntable 26. In the same circumferential direction, the change trend of the distance from the first oblique arc groove 221 to the center of the rotating shaft 27 is opposite to the change trend of the distance from the second oblique arc groove 261 to the center of the rotating shaft 27, if the distance from the first oblique arc groove 221 to the center of the rotating shaft 27 is gradually increased, the distance from the second oblique arc groove 261 to the center of the rotating shaft 27 is gradually decreased, and if the distance from the first oblique arc groove 221 to the center of the rotating shaft 27 is gradually decreased, the distance from the second oblique arc groove 261 to the center of the rotating shaft 27 is gradually increased, so that the operation that the outer push block 24 and the inner push block 28 synchronously press against the plastic pipe 40 or synchronously keep away from the plastic pipe 40 can be realized.

The driving member 210 is configured to drive the outer dial 22 and the inner dial 26 to rotate synchronously, so as to push the outer pushing block 24 and the inner pushing block 28 to synchronously clamp and continuously clamp the inner and outer walls of the sleeve 21, specifically, since the inner dial 26 is connected to the rotating shaft 27, and the dial surface of the outer dial 22 is connected to the rotating shaft 27 through the connecting rod 211, when the driving cylinder 2101 drives the piston 2102 to extend, the driving rod 2103 on the piston 2102 pushes the connecting rod 211 to move, and since the connecting rod 211 can only move circumferentially around the center line of the rotating shaft 27, under the pushing action of the driving rod 2103, the connecting rod 211 moves circumferentially around the center line of the rotating shaft 27, and the driving cylinder 2101 can also rotate around the pivot shaft to adjust its own angle in order to adapt to the movement of the connecting rod 211, and when the connecting rod 211 and the rotating shaft 27 rotate by a preset angle, the driving cylinder 2101 does not understand that the position of the piston 2102 is maintained, and at this time, the outer dial 22 and the inner dial 26 and the connecting rod 2104 and the rotating shaft 27 drive the inner pushing block 24 to synchronously clamp and the inner pushing block 28 and the inner pushing block 21 to maintain the synchronous clamping of the inner pushing block 21.

The inner diameter of the ring surrounded by the three outer pushing blocks 24 is equal to the outer diameter of the plastic pipeline 40, so that the plastic pipeline 40 can be wrapped in the ring surrounded by the three outer pushing blocks 24 in the clamping process, the stress on the wall of the plastic pipeline 40 is uniform, and the plastic pipeline 40 is well protected.

Every two adjacent outer pushing blocks 24 are symmetrically arranged relative to the inner pushing block 28, when the three outer pushing blocks 24 surround the plastic pipeline 40, the inner pushing block 28 presses the gap between the two adjacent outer pushing blocks 24 on the inner wall of the plastic pipeline 40, so that a clamping blind area is avoided, the end part of the whole plastic pipeline 40 is pressed more uniformly, and the plastic pipeline 40 is protected better.

The plastic pipe 40 provided with the clamping mechanism 20 is placed between two tripods 10 in a spanning mode, and the two clamping mechanisms 20 are respectively hung on the two tripods 10 through springs 50.

Each of said tripods 10 has a tetrahedral shape, comprising six support rods 101 distributed at each side of the tetrahedron. Because the stability of tripod 10 can be right plastic conduit 40 stabilizes the support, and because tripod 10 has the narrow wide characteristic down, not only be convenient for plastic conduit 40 from last to putting into two between the tripod 10, can also make the in-process of transportation the both ends suspension of plastic conduit 40 is in the broad region in below of tripod 10, be difficult for with collision and interference take place for tripod 10.

Each clamping mechanism 20 is hung on the tripod 10 through two springs 50, the two springs 50 are respectively symmetrically arranged on two sides of the outer wall of the sleeve 21, one end of each of the two springs 50 is hung on two sides of the outer wall of the sleeve 21 through a first lug 60, and the other end of each of the two springs 50 is hung on two support rods 101 on two sides of the sleeve 21 through a second lug 70.

The spring 50 has a large elastic coefficient, and due to the high elasticity and easy resetting characteristics of the spring 50, the four springs 50 can effectively maintain the stability of the plastic pipeline 40 in the shaking process of the transport carriage, reduce the shaking degree of the plastic pipeline, and try to pull the plastic pipeline 40 to the middle position, thereby effectively avoiding the collision of the plastic pipeline 40.

The distance between the two second lugs 70 on the same tripod 10 is greater than the distance between the two first lugs 60 on the same sleeve 21, the distance between the two second lugs 70 on the same tripod 10 is greater than the distance between the two first lugs 60 on the same side of the two sleeve 21, and the lugs are arranged in such a way, so that the distance between the end part of the plastic pipeline 40 and the supporting rod 101 of the tripod 10 can be increased as much as possible, the plastic pipeline 40 is further effectively prevented from colliding with the supporting rod 101, the spring 50 can be kept in a stretching state, the stability maintaining effect on the plastic pipeline 40 is enhanced, and the shaking degree of the plastic pipeline is further reduced.

The supporting mechanism 30 is mounted on two tripods 10 and is used for supporting the weight of the middle section of the plastic pipe 40.

Supporting mechanism 30 includes two peg 31 and a plurality of elastic webbing 32, two peg 31 spanes and connects two on the tripod 10, two peg 31 parallel arrangement is in the top both sides of plastic conduit 40, two equidistant a plurality of being connected with on peg 31 elastic webbing 32, the both ends of elastic webbing 32 articulate respectively two on the peg 31, the interlude bearing of elastic webbing 32 is in the bottom of plastic conduit 40, elastic webbing 32's coefficient of elasticity is high, can play fine bearing effect.

Because plastic conduit 40 is at the in-process that hangs, although both ends can receive fine protection, but the interlude is under the action of gravity, and is flagging easily, and is not only right plastic conduit 40's both ends play a dragging effect, still can make plastic conduit 40's interlude takes place great deformation, consequently, two set up a supporting mechanism 30 between tripod 10, be used for right plastic conduit 40's interlude effectively supports, avoids plastic conduit 40's interlude takes place deformation, thereby effectively guarantees the straightness accuracy of plastic conduit 40 interlude.

In order to ensure that the two ends of the plastic pipeline 40 are not deformed, the two ends of the plastic pipeline 40 are respectively provided with the clamping mechanisms 20, and the inner wall and the outer wall of the end part of the plastic pipeline 40 are automatically and synchronously clamped through the clamping mechanisms 20, so that the excircle degree of the end part of the plastic pipeline 40 can be well ensured; the plastic pipe 40 is suspended between the two tripods 10 through the spring 50, so that the plastic pipe 40 can be effectively prevented from being deformed and cracked due to collision during transportation; and then, the middle section of the plastic pipeline 40 is effectively supported by the supporting mechanism 30, so that the straightness of the middle section of the plastic pipeline 40 is ensured, and the middle section of the plastic pipeline 40 is prevented from being bent and deformed.

The above examples are merely illustrative of several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A protection device for transporting a plastic pipeline is characterized by comprising a tripod (10), a clamping mechanism (20) and a supporting mechanism (30);

the clamping mechanisms (20) are two in number, the two clamping mechanisms (20) are respectively installed at two ends of a plastic pipeline (40), each clamping mechanism (20) comprises a sleeve (21), an outer rotary disc (22), T-shaped rods (23), outer push blocks (24), a pressure plate (25), an inner rotary disc (26), a rotating shaft (27), inner push blocks (28), L-shaped rods (29) and a driving piece (210), the outer rotary disc (22) and the sleeve (21) are sequentially and coaxially sleeved at one end of the plastic pipeline (40), the outer rotary disc (22) is in clearance fit with the plastic pipeline (40), the outer rotary disc (22) is rotatably connected to the inner wall of the sleeve (21), the outer push blocks (24) are three in number, the sleeve (21) and the outer wall of the plastic pipeline (40) are provided with the three outer push blocks (24) distributed in a circumferential array, the side, far away from the plastic pipeline (40), of each outer push block (24) is connected with one T-shaped rod (23), the T-shaped rods (23) are movably connected to the middle of the inner push rod (22), and the other end of the inner push rod (22) is fixedly connected to the inner push rod (24), the other end of the inner pushing block is movably inserted into the wall of the sleeve (21), the pressure plate (25) is fixedly connected to the end, close to the end of the plastic pipeline (40), of the sleeve (21), a cavity groove (251) which is sunk into the plastic pipeline (40) is arranged in the middle of the pressure plate (25), a rotating shaft (27) is rotatably connected to the cavity groove (251), an inner rotating disc (26) is connected to the rotating shaft (27) in a key mode, three inner pushing blocks (28) which are distributed in a circumferential array mode are arranged between the cavity groove (251) and the inner wall of the plastic pipeline (40), the side, close to the cavity groove (251), of each inner pushing block (28) is connected with an L-shaped rod (29), one end of each L-shaped rod (29) is fixedly connected to the inner pushing block (28), the other end of each L-shaped rod is movably inserted into a second inclined arc groove (261) of the inner rotating disc (26), and the driving piece (210) is used for driving the outer rotating disc (22) and the inner pushing block (26) to synchronously rotate by a preset angle so as to push the inner pushing block (24) and the inner pushing block (21) to clamp the inner wall of the sleeve (21) and the inner pushing block (21) continuously;

a plastic pipe (40) provided with the clamping mechanisms (20) is placed between the two tripods (10) in a crossing mode, and the two clamping mechanisms (20) are respectively hung on the two tripods (10) through springs (50);

the supporting mechanism (30) is arranged on the two tripods (10) and is used for supporting the weight of the middle section of the plastic pipeline (40).

2. The protection device for plastic pipe transportation as claimed in claim 1, wherein a connecting rod (211) is connected between the plate surface of the outer rotating plate (22) and the rotating shaft (27), the driving member (210) comprises a driving cylinder (2101), a piston (2102), a driving rod (2103) and a pivot (2104), the driving cylinder (2101) is connected to the plate surface of the pressure plate (25) through the pivot (2104), one end of the piston (2102) is movably connected in the driving cylinder (2101), the other end of the piston (2102) is vertically connected with the driving rod (2103), and the driving rod (2103) is movably connected to the connecting rod (211).

3. The protection device for transporting the plastic pipeline as claimed in claim 2, wherein the number of the connecting rods (211) is three, the three connecting rods (211) are distributed on the plate surface of the outer rotating plate (22) in a circumferential array, the connecting rods (211) are L-shaped, one section of each connecting rod is vertically and fixedly connected to the plate surface of the outer rotating plate (22), the other section of each connecting rod is vertically and fixedly connected to the rotating shaft (27), three circular arc grooves (252) are distributed on the plate surface of the pressing plate (25) in a circumferential array, and the section of each connecting rod (211) vertically connected to the outer rotating plate (22) is movably inserted into the corresponding circular arc groove (252).

4. A protective device for transporting plastic pipes as claimed in claim 1, wherein the inner diameter of the circle enclosed by the three pushers (24) is equal to the outer diameter of the plastic pipe (40).

5. A protection device for transporting plastic pipes according to claim 1, characterized in that each two adjacent pushers (24) are symmetrically arranged with respect to the inner pusher (28).

6. The protection device for transporting the plastic pipeline, according to claim 1, wherein the supporting mechanism (30) comprises two hanging rods (31) and a plurality of elastic bands (32), the two hanging rods (31) are connected to the two tripods (10) in a crossing manner, the two hanging rods (31) are arranged on two sides above the plastic pipeline (40) in parallel, the plurality of elastic bands (32) are connected to the two hanging rods (31) at equal intervals, two ends of each elastic band (32) are respectively connected to the two hanging rods (31) in a hanging manner, and the middle section of each elastic band (32) is supported at the bottom of the plastic pipeline (40).

7. A protection device for transporting plastic pipes according to claim 1, characterized in that each of said tripods (10) is tetrahedral and comprises six support rods (101) distributed at each side of the tetrahedron.

8. The protection device for transporting plastic pipes as claimed in claim 7, wherein each clamping mechanism (20) is suspended from the tripod (10) by two springs (50), the two springs (50) are symmetrically arranged on two sides of the outer wall of the sleeve (21), one end of each spring (50) is suspended on two sides of the outer wall of the sleeve (21) by a first lug (60), and the other end of each spring is suspended on two support rods (101) on two sides of the sleeve (21) by a second lug (70).

9. A protection device for transporting plastic pipes according to claim 8, characterized in that the distance between two second lugs (70) on one and the same tripod (10) is greater than the distance between two first lugs (60) on one and the same sleeve (21), and the distance between two second lugs (70) on two tripods (10) is greater than the distance between two first lugs (60) on the same side of two sleeves (21).