CN216706953U

CN216706953U - Pipeline mouth grinding device is used in processing of natural gas line that practicality is high

Info

Publication number: CN216706953U
Application number: CN202122775147.6U
Authority: CN
Inventors: 王成
Original assignee: Shenzhen Investment Construction Shenzhen Co ltd
Current assignee: Shenzhen Investment Construction Shenzhen Co ltd
Priority date: 2021-11-13
Filing date: 2021-11-13
Publication date: 2022-06-10
Anticipated expiration: 2031-11-13

Abstract

The utility model discloses a pipeline opening polishing device for processing a natural gas pipeline, which has high practicability and comprises a processing table, the pipeline mouths with different diameters and lengths can be polished by adjusting the distance between the two connecting plates through the mutual matching of the first threaded rod, the first threaded sleeve, the fixed rod, the connecting plates, the polishing column and the knob, the practicability is high, the clamping plate, the arc-shaped plate, the straight plate, the second thread sleeve, the second threaded rod and the second hand-rocking wheel are matched with each other to clamp and fix the pipeline conveniently, so that the shaking generated in the polishing process is avoided, the processing efficiency is improved, can adsorb the collection to the dust that the in-process produced of polishing through mutually supporting between dust absorption pump, dust absorption pipe, dust collecting pipe, dust exhaust pipe and the dust collecting box, avoid causing injury and production environmental pollution to staff's health.

Description

Pipeline mouth grinding device is used in processing of natural gas line that practicality is high

Technical Field

The utility model relates to the technical field of natural gas pipeline processing, in particular to a pipeline opening polishing device for natural gas pipeline processing, which is high in practicability.

Background

The natural gas pipeline is a pipeline for conveying natural gas from an exploitation place or a processing plant to an urban gas distribution center or an industrial enterprise user, and is also called a gas transmission pipeline.

The pipeline mouth grinding device for processing the existing natural gas pipeline is low in practicability and cannot grind pipeline mouths with different diameters, the existing grinding device cannot clamp and fix the pipeline, shaking is easily caused in the grinding process, grinding efficiency is influenced, and dust generated by the existing grinding device in the grinding process can injure the body of a worker and can also pollute the environment.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a pipeline opening grinding device for processing a natural gas pipeline, which has high practicability.

One of the purposes of the utility model is realized by adopting the following technical scheme:

a pipeline opening polishing device for natural gas pipeline processing with high practicability comprises a processing table, wherein a side plate is fixedly connected to the top of the processing table close to the right side, a support is fixedly connected to the right side of the side plate, a motor is fixedly connected to the top of the support, a rotating shaft is fixedly connected to the power output end of the motor, a first bearing is fixedly connected to the side plate close to the middle position, the left end of the rotating shaft penetrates through the inner cavity of the first bearing and is fixedly connected with a disc, a polishing mechanism is arranged on the left side of the disc, a dust removal mechanism is arranged on the top of the disc, a bearing plate is arranged on the processing table close to the left side, an adjusting mechanism is arranged between the bearing plate and the processing table, vertical plates are fixedly connected to the top of the bearing plate close to the left side and the right side, slots are formed in the top of the two vertical plates close to the front side and the back side, the inner cavities of the slots are all inserted with inserting rods, the top ends of the inserting rods are fixedly connected with a supporting plate, a lifting mechanism is arranged on a bottom plate of the supporting plate, and a clamping mechanism is arranged at the top of the supporting plate.

Furthermore, the polishing mechanism comprises two connecting plates which are respectively positioned at the left sides of the discs and are close to the top and the bottom, the left sides of the two connecting plates are fixedly connected with two polishing columns which are arranged up and down, the discs are provided with cavities close to the top and the bottom, the cavity inner cavities are provided with first thread sleeves, the middle positions of the discs are provided with first through holes, the inner cavities of the first through holes are provided with first thread rods in a penetrating manner, the tops of the cavities at the top are provided with second through holes, the bottom ends of the first thread rods penetrate through the inner cavities of the adjacent first thread sleeves and are movably connected with the bottoms of the cavity inner cavities at the bottom, the top ends of the first thread rods penetrate through the inner cavities of the adjacent first thread sleeves and the second through holes and are fixedly connected with knobs, and the left sides of the two first thread sleeves are fixedly connected with fixing rods, and the left sides of the two cavities are provided with grooves, and the left ends of the two fixing rods penetrate through the inner cavities of the adjacent grooves respectively and are fixedly connected with the adjacent connecting plates.

Further, dust removal mechanism includes the dust absorption pump, just dust absorption pump fixed connection is in the left side top department of curb plate, the left side fixedly connected with dust absorption pipe of dust absorption pump, just the one end fixedly connected with dust collection pipe of dust absorption pump is kept away from to the dust absorption pipe, the right side of curb plate is close to top fixedly connected with dust collecting box, the right side fixedly connected with dust exhaust pipe of dust absorption pump, just the right-hand member of dust exhaust pipe runs through the left side of curb plate and dust collecting box to extend to the inner chamber of dust collecting box.

Furthermore, adjustment mechanism includes first slider, just first slider fixed connection is in the bottom intermediate position department of loading board, the top of processing platform is close to left side department and has seted up first spout, just first slider swing joint is in first spout inner chamber, be close to right side department on the loading board and seted up the perforation, just the perforation inner chamber runs through and is equipped with T shape pole, the outside cover of T shape pole is equipped with first spring, just the upper and lower both ends of first spring respectively with the top fixed connection of T shape pole and loading board, the first blind hole of a plurality of has been seted up to first spout inner chamber bottom, just the longer one end of T shape pole T shape structure is pegged graft at one of them first blind hole inner chamber.

Further, elevating system includes two cams, and two the bottom that the cam is located the backup pad respectively is close to left and right sides department, two be close to top department on the cam and run through jointly and be equipped with the bull stick, two be close to the equal fixedly connected with second bearing of top department on the riser, the right-hand member of bull stick is pegged graft at adjacent second bearing inner chamber, just the left end of bull stick runs through adjacent second bearing inner chamber to the first hand wheel that shakes of fixedly connected with.

Further, be close to left end department cover on the bull stick and be equipped with the carousel, just a plurality of second blind hole has been seted up to the outside edge of carousel, the top of loading board is close to left side department fixedly connected with sleeve pipe, just sleeve pipe inner chamber bottom fixedly connected with second spring, the top fixedly connected with limiting plate of second spring, just the top fixedly connected with montant of limiting plate, the top of montant runs through sheathed tube inner chamber, and plug-in one of them second blind hole inner chamber, the left side of montant is close to intermediate position department fixedly connected with plectrum.

Further, the clamping mechanism comprises two clamping plates, the two clamping plates are respectively positioned at the top part of the supporting plate close to the front side and the rear side, the adjacent sides of the two clamping plates are fixedly connected with an arc-shaped plate, the bottoms of the two clamping plates are fixedly connected with second sliding blocks, the top part of the supporting plate close to the front side and the rear side is respectively provided with a second sliding chute, the two second sliding blocks are respectively movably connected with the inner cavities of the adjacent second sliding chutes, the far sides of the two clamping plates are respectively provided with a straight plate, the bottoms of the straight plates are fixedly connected with the supporting plate, the far sides of the two clamping plates are respectively fixedly connected with a third bearing, the two straight plates are respectively fixedly connected with a second thread sleeve, the inner cavity of the second thread sleeve is provided with a second threaded rod in a penetrating manner, and the adjacent ends of the two second threaded rods are respectively inserted into the inner cavities of the adjacent third bearings, and two the equal fixedly connected with second hand wheel of one end that the second threaded rod kept away from mutually.

Compared with the prior art, the utility model has the beneficial effects that:

1. the pipeline openings with different diameters and lengths can be polished by adjusting the distance between the two connecting plates through the mutual matching of the first threaded rod, the first threaded sleeve, the fixed rod, the connecting plates, the polishing column and the knob, and the practicability is high;

2. the clamping plate, the arc-shaped plate, the straight plate, the second thread sleeve, the second threaded rod and the second hand rocking wheel are matched with each other, so that the pipeline is clamped and fixed conveniently, the shaking generated in the polishing process is avoided, and the processing efficiency is improved;

3. can adsorb the collection to the dust that the in-process produced of polishing through mutually supporting between dust absorption pump, dust absorption pipe, dust collecting pipe, dust exhaust pipe and the dust collecting box, avoid causing injury and production environmental pollution to staff's health.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is a left side view of the component support plate;

FIG. 3 is an enlarged view of FIG. 1 at A;

fig. 4 is an enlarged view of fig. 1 at B.

In the figure: 1. a processing table; 2. a side plate; 3. a carrier plate; 4. a vertical plate; 5. a rod is inserted; 6. a support plate; 7. a splint; 8. a second hand wheel; 9. a straight plate; 10. a cam; 11. a rotating rod; 12. a first hand-cranking wheel; 13. a T-shaped rod; 14. a first spring; 15. a motor; 16. a rotating shaft; 17. a disc; 18. a dust suction pump; 19. a dust collection pipe; 20. a dust collecting pipe; 21. a dust collection box; 22. a dust exhaust pipe; 23. an arc-shaped plate; 24. a second threaded rod; 25. a sleeve; 26. a second spring; 27. a vertical rod; 28. a turntable; 29. a connecting plate; 30. polishing the column; 31. a first threaded rod; 32. a knob.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, a pipeline opening polishing device for processing a natural gas pipeline with high practicability comprises a processing table 1, a side plate 2 is fixedly connected to the top of the processing table 1 near the right side, a bracket is fixedly connected to the right side of the side plate 2, a motor 15 is fixedly connected to the top of the bracket, a rotating shaft 16 is fixedly connected to the power output end of the motor 15, a first bearing is fixedly connected to the side plate 2 near the middle position, the left end of the rotating shaft 16 penetrates through the inner cavity of the first bearing, a disc 17 is fixedly connected to the left end of the disc 17, a polishing mechanism is arranged on the left side of the disc 17, a dust removing mechanism is arranged on the top of the disc 17, a bearing plate 3 is arranged at the top of the processing table 1 near the left side, an adjusting mechanism is arranged between the bearing plate 3 and the processing table 1, risers 4 are fixedly connected to the top of the bearing plate 3 near the left side and the right side, slots are arranged on the tops of the two risers 4 near the front side and the back side, the inner cavities of the plurality of slots are all inserted with the inserted rods 5, the top ends of the plurality of inserted rods 5 are jointly and fixedly connected with the supporting plate 6, the bottom plate of the supporting plate 6 is provided with a lifting mechanism, and the top of the supporting plate 6 is provided with a clamping mechanism;

the grinding mechanism comprises two connecting plates 29, the two connecting plates 29 are respectively positioned on the left side of the disc 17 and are close to the top and the bottom, the left sides of the two connecting plates 29 are fixedly connected with two grinding columns 30, the two grinding columns 30 are arranged up and down, cavities are formed on the disc 17 and are close to the top and the bottom, the cavity inner cavities are provided with first thread sleeves, the middle position of the disc 17 is provided with a first through hole, the first through hole inner cavity is provided with a first thread rod 31 in a penetrating manner, the top of the cavity positioned at the top is provided with a second through hole, the bottom end of the first thread rod 31 penetrates through the adjacent first thread sleeve inner cavities and is movably connected with the bottom of the cavity inner cavity, the top end of the first thread rod 31 penetrates through the adjacent first thread sleeves and the second through hole inner cavities and is fixedly connected with a knob 32, the left sides of the two first thread sleeves are fixedly connected with fixing rods, the left sides of the two cavities are provided with grooves, the left ends of the two fixing rods respectively penetrate through the adjacent slotted inner cavities and are fixedly connected with the adjacent connecting plates 29, so that the polishing effect is good;

the dust removing mechanism comprises a dust collecting pump 18, the dust collecting pump 18 is fixedly connected to the top of the left side of the side plate 2, a dust collecting pipe 19 is fixedly connected to the left side of the dust collecting pump 18, a dust collecting pipe 20 is fixedly connected to one end, far away from the dust collecting pump 18, of the dust collecting pipe 19, a dust collecting box 21 is fixedly connected to the position, close to the top, of the right side of the side plate 2, a dust discharging pipe 22 is fixedly connected to the right side of the dust collecting pump 18, the right end of the dust discharging pipe 22 penetrates through the left sides of the side plate 2 and the dust collecting box 21 and extends to the inner cavity of the dust collecting box 21, and damage to the body of a worker and environmental pollution caused by dust generated in the polishing process are avoided;

the adjusting mechanism comprises a first sliding block, the first sliding block is fixedly connected to the middle position of the bottom of the bearing plate 3, a first sliding groove is formed in the position, close to the left side, of the top of the machining table 1, the first sliding block is movably connected to an inner cavity of the first sliding groove, a through hole is formed in the position, close to the right side, of the bearing plate 3, a T-shaped rod 13 penetrates through the inner cavity of the through hole, a first spring 14 is sleeved on the outer side of the T-shaped rod 13, the upper end and the lower end of the first spring 14 are fixedly connected with the T-shaped rod 13 and the top of the bearing plate 3 respectively, a plurality of first blind holes are formed in the bottom of the inner cavity of the first sliding groove, the longer end of the T-shaped rod 13 in a T-shaped structure is inserted into one of the inner cavities of the first blind holes, pipelines with different diameters can be conveniently polished, and the practicability is good;

the lifting mechanism comprises two cams 10, the two cams 10 are respectively positioned at the bottom of the supporting plate 6 close to the left side and the right side, rotating rods 11 are jointly penetrated and arranged at the positions, close to the tops, of the two cams 10, second bearings are fixedly connected to the positions, close to the tops, of the two vertical plates 4, the right ends of the rotating rods 11 are inserted into the inner cavities of the adjacent second bearings, the left ends of the rotating rods 11 penetrate through the inner cavities of the adjacent second bearings, first hand-operated wheels 12 are fixedly connected to the left ends of the rotating rods 11, rotary discs 28 are sleeved on the positions, close to the left ends of the rotary discs 28, a plurality of second blind holes are formed in the outer edges of the rotary discs 28, sleeves 25 are fixedly connected to the positions, close to the left sides, of the tops of the supporting plates 3, second springs 26 are fixedly connected to the bottoms of the inner cavities of the sleeves 25, limiting plates are fixedly connected to the tops of the second springs 26, vertical rods 27 are fixedly connected to the tops of the limiting plates, the tops of the vertical rods 27 penetrate through the inner cavities of the sleeves 25 and are inserted into one of the second blind holes, the left side of the vertical rod 27 close to the middle position is fixedly connected with a shifting sheet, so that the height of the supporting plate 6 can be conveniently adjusted according to different pipe thicknesses, and the polishing effect is improved;

the clamping mechanism comprises two clamping plates 7, the two clamping plates 7 are respectively positioned at the top parts of the supporting plate 6 close to the front side and the rear side, the adjacent sides of the two clamping plates 7 are respectively and fixedly connected with an arc-shaped plate 23, the bottoms of the two clamping plates 7 are respectively and fixedly connected with a second sliding block, the top parts of the supporting plate 6 close to the front side and the rear side are respectively provided with a second sliding chute, the two second sliding blocks are respectively and movably connected with the inner cavity of the adjacent second sliding chute, one side of the two clamping plates 7 far away from each other is provided with a straight plate 9, the bottom of the straight plate 9 is fixedly connected with the supporting plate 6, one side of the two clamping plates 7 far away from each other is respectively and fixedly connected with a third bearing, the two straight plates 9 are respectively and fixedly connected with a second threaded sleeve, the inner cavity of the second threaded sleeve is penetrated by a second threaded rod 24, the adjacent ends of the two second threaded rods 24 are respectively inserted into the inner cavity of the adjacent third bearing, and one end of the two second threaded rods 24 far away from each is fixedly connected with a second hand rocking wheel 8, avoid rocking the in-process and produce at the polishing, improve machining efficiency.

The working principle is as follows: when the pipeline clamping device is used, a pipeline is placed at the top of a supporting plate 6, the pipeline is placed between two arc-shaped plates 23, two second hand-rocking wheels 8 are rotated to drive adjacent second threaded rods 24 to rotate, the two second threaded rods 24 are rotated to drive two clamping plates 7 to move relatively through adjacent second threaded sleeves, so that the two arc-shaped plates 23 are driven to clamp the pipeline, a plectrum is pressed to drive a vertical rod 27 to move downwards, the top end of the vertical rod 27 is separated from an inner cavity of a second blind hole while a second spring 26 is squeezed, a rotating rod 11 is driven to rotate by rotating a first hand-rocking wheel 12, the rotating rod 11 is driven to rotate two cams 10, the supporting plate 6 is driven to move upwards by rotating the two cams 10, so that the pipeline is driven to move upwards, the height of the pipeline is consistent with that of a disc 17, a T-shaped rod 13 is pulled to move upwards, and the longer end of the T-shaped rod 13 in a T-shaped structure is separated from the inner cavity of the first blind hole, the bearing plate 3 is pushed to move rightwards to plug a pipeline port between two adjacent grinding columns 30, the motor 15 and the dust suction pump 18 are started through an external power supply, the motor 15 works to drive the rotating shaft 16 to rotate, the rotating shaft 16 rotates to drive the disc 17 to rotate, so that the pipeline port is ground, the dust suction pump 18 works to adsorb dust generated in the grinding process through the dust suction pipe 19 and the dust collection pipe 20 and conveys the dust into the inner cavity of the dust collection box 21 through the dust discharge pipe 22, injury and environmental pollution to the body of a worker are avoided, when the distance between two connecting plates 29 needs to be adjusted, the knob 32 is screwed to drive the first threaded rod 31 to rotate, the first threaded rod 31 rotates to drive the two first threaded sleeves to move relatively, the two connecting plates 29 are driven to move relatively through the two fixing rods, so that the pipeline port with smaller diameter length can be ground, otherwise, the pipeline with the larger diameter of the pipeline opening is polished, and the practicability of the device is improved.

The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are intended to be covered by the claims.

Claims

1. The utility model provides a natural gas line processing that practicality is high is with pipeline mouth grinding device, includes processing platform (1), its characterized in that: the top of the processing table (1) is close to a right side fixedly connected with side plate (2), the right side of the side plate (2) is fixedly connected with a support, a top of the support is fixedly connected with a motor (15), a power output end of the motor (15) is fixedly connected with a rotating shaft (16), the side plate (2) is close to a middle position fixedly connected with a first bearing, the left end of the rotating shaft (16) penetrates through a first bearing inner cavity and is fixedly connected with a disc (17), a grinding mechanism is arranged on the left side of the disc (17), a dust removal mechanism is arranged on the top of the disc (17), a bearing plate (3) is arranged on the top of the processing table (1) close to the left side, an adjusting mechanism is arranged between the bearing plate (3) and the processing table (1), and a vertical plate (4) is fixedly connected with the top of the bearing plate (3) close to the left side and the right side, two slots have all been seted up to both sides department around the top of riser (4) is close to, a plurality of the slot inner chamber all is pegged graft and has been had inserted bar (5), and a plurality of the common fixedly connected with backup pad (6) in top of inserted bar (5), the bottom plate of backup pad (6) is equipped with elevating system, the top of backup pad (6) is equipped with fixture.

2. The pipe mouth grinding device for natural gas pipe processing with high practicability as claimed in claim 1, characterized in that: the polishing mechanism comprises two connecting plates (29), the two connecting plates (29) are respectively positioned at the left side of the disc (17) and are close to the top and the bottom, the left sides of the two connecting plates (29) are fixedly connected with two polishing columns (30), the two polishing columns (30) are arranged up and down, cavities are respectively arranged on the disc (17) and are close to the top and the bottom, the cavity inner cavities are provided with first thread sleeves, the middle position of the disc (17) is provided with a first through hole, the first through hole inner cavity is provided with a first threaded rod (31) in a penetrating manner, the top of the cavity positioned at the top is provided with a second through hole, the bottom end of the first threaded rod (31) penetrates through the adjacent first thread sleeve inner cavities and is movably connected with the bottom of the cavity inner cavity at the bottom, and the top end of the first threaded rod (31) penetrates through the adjacent first thread sleeves and the inner cavities of the second through holes, and fixedly connected with knob (32), two equal fixedly connected with dead lever in left side of first thread bush, two the fluting has all been seted up in the left side of cavity, and two the left end of dead lever runs through adjacent fluting inner chamber respectively to with adjacent connecting plate (29) fixed connection.

3. The pipe mouth grinding device for natural gas pipe processing with high practicability as claimed in claim 1, characterized in that: dust removal mechanism includes dust absorption pump (18), just dust absorption pump (18) fixed connection is in the left side top department of curb plate (2), the left side fixedly connected with dust absorption pipe (19) of dust absorption pump (18), just one end fixedly connected with dust collecting pipe (20) of dust absorption pump (18) are kept away from in dust absorption pipe (19), the right side of curb plate (2) is close to top fixedly connected with dust collecting box (21), the right side fixedly connected with dust exhaust pipe (22) of dust absorption pump (18), just the right-hand member of dust exhaust pipe (22) runs through the left side of curb plate (2) and dust collecting box (21) to extend to the inner chamber of dust collecting box (21).

4. The pipe mouth grinding device for natural gas pipe processing with high practicability as claimed in claim 1, characterized in that: the adjusting mechanism comprises a first sliding block, the first sliding block is fixedly connected to the middle position of the bottom of the bearing plate (3), a first sliding groove is formed in the position, close to the left side, of the top of the machining table (1), the first sliding block is movably connected to the inner cavity of the first sliding groove, a through hole is formed in the position, close to the right side, of the bearing plate (3), the inner cavity of the through hole is provided with a T-shaped rod (13) in a penetrating mode, a first spring (14) is sleeved on the outer side of the T-shaped rod (13), the upper end and the lower end of the first spring (14) are fixedly connected with the T-shaped rod (13) and the top of the bearing plate (3) respectively, a plurality of first blind holes are formed in the bottom of the inner cavity of the first sliding groove, and the longer end of the T-shaped rod (13) in a T-shaped structure is inserted into one of the first blind hole inner cavities.

5. The pipe orifice grinding device for natural gas pipe processing with high practicability as claimed in claim 1, characterized in that: elevating system includes two cams (10), and two bottom that cam (10) are located backup pad (6) respectively is close to left and right sides department, two be close to top department on cam (10) and run through jointly and be equipped with bull stick (11), two be close to the equal fixedly connected with second bearing of top department on riser (4), peg graft at adjacent second bearing inner chamber at the right-hand member of bull stick (11), just the left end of bull stick (11) runs through adjacent second bearing inner chamber to the first hand rocking wheel of fixedly connected with (12).

6. The pipe orifice grinding device for natural gas pipe processing with high practicability as claimed in claim 5, characterized in that: the bearing plate is characterized in that a turntable (28) is sleeved on the rotating rod (11) close to the left end, a plurality of second blind holes are formed in the outer edge of the turntable (28), the top of the bearing plate (3) is close to a sleeve (25) fixedly connected to the left side, a second spring (26) is fixedly connected to the bottom of the inner cavity of the sleeve (25), a limiting plate is fixedly connected to the top end of the second spring (26), a vertical rod (27) is fixedly connected to the top of the limiting plate, the top end of the vertical rod (27) penetrates through the inner cavity of the sleeve (25) and is plugged into the inner cavity of one of the second blind holes, and a shifting piece is fixedly connected to the left side of the vertical rod (27) close to the middle position.

7. The pipe mouth grinding device for natural gas pipe processing with high practicability as claimed in claim 1, characterized in that: the clamping mechanism comprises two clamping plates (7), the two clamping plates (7) are respectively positioned at the top parts of the supporting plate (6) close to the front side and the rear side, an arc-shaped plate (23) is fixedly connected to one adjacent side of the two clamping plates (7), a second sliding block is fixedly connected to the bottom parts of the two clamping plates (7), second sliding grooves are respectively formed in the top parts of the supporting plate (6) close to the front side and the rear side, the two second sliding blocks are respectively movably connected to the inner cavities of the adjacent second sliding grooves, a straight plate (9) is arranged at one side, far away from the two clamping plates (7), of the straight plate (9) is fixedly connected with the supporting plate (6), a third bearing is fixedly connected to one side, far away from the two clamping plates (7), a second thread sleeve is fixedly connected to the two straight plates (9), and a second threaded rod (24) penetrates through the inner cavity of the second thread sleeve, two the adjacent one end of second threaded rod (24) is pegged graft respectively in adjacent third bearing inner chamber, and two the equal fixedly connected with second hand wheel (8) of one end that second threaded rod (24) kept away from mutually.