CN113334159A

CN113334159A - Pipe end polishing equipment for external corrosion prevention of 3PE steel pipe

Info

Publication number: CN113334159A
Application number: CN202110683352.1A
Authority: CN
Inventors: 郭荣科; 薛宗权; 邵辉; 张剑韬
Original assignee: Tianjin Science And Construction Antiseptic Technology Co ltd
Current assignee: Tianjin Science And Construction Antiseptic Technology Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2021-09-03

Abstract

The invention relates to the technical field of steel pipe end polishing equipment, and discloses pipe end polishing equipment for 3PE steel pipe external corrosion prevention, which comprises a bottom plate, wherein a polishing mechanism is arranged on the bottom plate, a polishing block is fixedly connected with a sliding plate, the sliding plate is in sliding connection with the bottom plate, a steel pipe to be polished is placed between a driven shaft I and a driven shaft II, a motor I is electrified to drive a gear to rotate, when teeth of the gear rotate to be meshed with a notch on the inner top surface of the sliding plate, the gear rotates to drive the sliding plate to slide backwards, the sliding plate drives the polishing block to slide backwards to polish the left end surface of the steel pipe, when the teeth of the gear rotate to be meshed with the notch on the inner bottom surface of the sliding plate, the gear pushes the sliding plate to slide forwards to drive the polishing block to polish the left end surface of the steel pipe again, and the limit of two pairs of the driving shaft, the driven shaft I and the driven shaft II steel pipe is matched to prevent the steel pipe from generating displacement when the steel pipe receives force in the horizontal direction given by the polishing block, the polishing effect is improved.

Description

Pipe end polishing equipment for external corrosion prevention of 3PE steel pipe

Technical Field

The invention relates to the technical field of steel pipe end polishing equipment, in particular to pipe end polishing equipment for 3PE steel pipe external corrosion prevention.

Background

The steel pipe is a hollow rod-shaped structure, the steel pipe probably needs to link together many steel pipes in practical application, perhaps with steel pipe and other structure assembly, this moment, the terminal surface that needs the steel pipe has higher plane degree, in order to do benefit to the assembly of steel pipe, consequently, the steel pipe need polish the processing to the terminal surface of steel pipe in the course of working, all adopt the method of manual polishing to polish the terminal surface of steel pipe among the follow-up application prior art of the steel pipe in order to do benefit to, the adoption is just closed to be carried and is being utilized rotatory polishing piece to polish the terminal surface of steel pipe usually, the polishing of rotation type is along the circumference to polish, the unicity of direction of motion makes the effect of polishing not ideal.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides pipe end grinding equipment for the external corrosion prevention of a 3PE steel pipe.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a be used for anticorrosive pipe end equipment of polishing outside 3PE steel pipe, includes the bottom plate, set up grinding machanism on the bottom plate, grinding machanism includes sanding block, sliding plate, motor one, spout one, gear, drive shaft, driven shaft one, driven shaft two and riser one, sanding block and sliding plate fixed connection and sliding plate and bottom plate sliding connection, the outer shell part and the bottom plate top surface fixed connection of motor one, the output shaft fixed connection of gear and motor one, spout one is seted up to the left side wall of sliding plate, and the gear is located spout one, and the notch with the gear adaptation is all seted up to the interior top surface of sliding plate and the interior ground of sliding plate, riser one and bottom plate fixed connection, and driven shaft one and driven shaft two evenly rotate the connection, drive shaft and riser swing joint.

Preferably, the grinding block is fixedly connected with the right side wall of the sliding plate, the vertical plate is located on the right side of the grinding block, the driven shaft I and the driven shaft II are rotatably connected with the left side wall of the vertical plate I, the gear only has a half circle of teeth, and the gear is matched with the sliding groove I.

Preferably, the polishing mechanism further comprises an electric hydraulic oil cylinder and a motor II, the electric hydraulic oil cylinder is fixedly connected with the first vertical plate, an output shaft of the electric hydraulic oil cylinder is rotatably connected with the driving shaft, the motor II is slidably connected with the first vertical plate, and an output shaft of the motor II is fixedly connected with the driving shaft.

Preferably, the longitudinal section of the first vertical plate is in a convex shape, the outer shell of the motor II is in sliding connection with the left side wall of the first vertical plate, the output shaft of the motor II and the driving shaft are located on the same Y axis, the base part of the electric hydraulic oil cylinder is fixedly connected with the first vertical plate, and the electric hydraulic oil cylinder is located right above the driving shaft.

Preferably, the grinding mechanism further comprises a lower chute and a storage box, the storage box is fixedly connected with the bottom plate, and the top surface of the storage box is provided with the lower chute.

Preferably, the storage box is a cuboid, and the transverse uncovering surface of the lower chute is funnel-shaped.

Preferably, grinding machanism still includes catch bar, partition panel, catch bar, limiting plate and feed opening, the partition panel runs through storage box sliding connection, and the feed opening is established to the top surface of partition panel, limiting plate and storage box fixed connection, catch bar and partition panel fixed connection, catch bar and electronic hydraulic cylinder fixed connection and catch bar laminating.

Preferably, the limiting plate is located under the partition panel and limiting plate, partition panel and lower chute are on same vertical line, and the feed opening sets up with lower chute stagger, and the partition panel still runs through the back wall of storage box, the catch bar is trapezoidal wedge for longitudinal section, and the antetheca slope of catch bar sets up, the horizontal cross-section of catch bar is L shape, catch bar and electric hydraulic cylinder's output shaft fixed connection and catch bar and the inclined plane sliding connection of catch bar.

(III) advantageous effects

Compared with the prior art, the invention provides pipe end polishing equipment for external corrosion prevention of a 3PE steel pipe, which has the following beneficial effects:

1. this be used for anticorrosive pipe end equipment of polishing outside 3PE steel pipe, through put the steel pipe that needs polish between driven shaft one and driven shaft two, drive gear revolve through first circular telegram of motor, when the tooth of gear rotated to the notch with the top surface in the sliding plate meshing, the gear rotation drives the sliding plate and slides backward, the sliding plate drives the left end face of sanding block backward slip to the steel pipe and polishes, when the tooth of gear revolve of tooth and the notch of bottom surface in the sliding plate meshing, the gear promotes the sliding plate and slides forward and drives the sanding block and polish the left end face of steel pipe once more, the cooperation drive shaft, the spacing of two pairs of steel pipes of driven shaft one and driven shaft, avoid the steel pipe to produce the displacement receiving the power of the horizontal direction that the sanding block gave, improve the effect of polishing.

2. This a pipe end equipment of polishing for outer anticorrosive of 3PE steel pipe, it is rotatory to drive the drive shaft through motor two-way electrician's work, and the drive shaft drives the steel pipe rotation between driven shaft one and the driven shaft two, utilizes the circumference of driven shaft one and driven shaft two and drive shaft to grind the lateral wall of steel pipe, polishes the periphery of steel pipe when polishing the terminal surface of steel pipe, raises the efficiency.

3. This be used for anticorrosive pipe end equipment of polishing outside 3PE steel pipe, it is rotatory with the steel pipe of driven shaft two tops through the drive shaft rotary drive driven shaft one for the left end face of steel pipe cooperates the sanding block back-and-forth movement at rotatory in-process, and the steel pipe slides and rotatory simultaneously on the right side wall of sanding block, polishes the left end face of steel pipe from a plurality of positions, improves at the in-process of polishing, guarantees the roughness of steel pipe left end face, and the effect of polishing is better.

4. This be used for anticorrosive pipe end equipment of polishing outside 3PE steel pipe, it is rotatory with the steel pipe on the driven shaft two to drive through the drive shaft, the left end face of steel pipe carries out polishing of rotation type with the sanding block and carries out polishing of slidingtype simultaneously, avoid the steel pipe only to lead to the fact sanding block and the position excessive wearing and tearing of steel pipe contact at sanding block surface rotation and the pit appears, each position and the frequency of steel pipe end face contact of increase sanding block right wall, reduce the excessive wearing and tearing of the same position of sanding block, improve the life of sanding block.

5. The pipe end polishing equipment for the 3PE steel pipe external corrosion prevention is characterized in that a steel pipe to be polished is placed in a lower chute, a plurality of steel pipes are stored in the upper half part of the lower chute side by side, only one steel pipe can be placed in the lower half part of the lower chute in the horizontal direction, an output shaft of an electric hydraulic oil cylinder moves upwards to drive a push rod to move upwards, the push rod pushes a push block to slide backwards, the push block pushes a partition plate to slide backwards in a storage box, a feed opening in the partition plate slides to be aligned with the lower chute, the steel pipe in the lower chute falls into the feed opening, when the output shaft of the electric hydraulic oil cylinder moves downwards to drive a driving shaft to be close to a first driven shaft and a second driven shaft, the push block moves forwards to pull the partition plate forwards, the steel pipe in the feed opening slides from the top surface of a limiting plate, when the steel pipe in the feed opening slides to be separated from the top surface of the limiting plate, the steel pipe in the feed opening falls out of the lowest opening of the lower chute, the electric hydraulic oil cylinder output shaft rises each time and pushes the driving shaft to be close to the driven shaft I and the driven shaft II to fall a steel pipe from the lower chute, and the convenience of taking the steel pipe during polishing is improved.

6. This be used for anticorrosive pipe end equipment of polishing outside 3PE steel pipe, through the steel pipe to driven shaft one and two tops of driven shaft polish the completion back, electric hydraulic cylinder's output shaft drives drive shaft and driven shaft one and two separation of driven shaft, and the steel pipe stall is rotatory, improves the security of taking out the steel pipe after polishing the completion, and the upper and lower flexible of cooperation electric hydraulic cylinder's output shaft, the completion back of polishing, the steel pipe that does not polish of automatic whereabouts improves degree of automation, and efficiency is higher.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic diagram of a transverse cutting structure of the storage box of the invention;

FIG. 3 is an enlarged schematic view of the invention shown in FIG. 1A;

FIG. 4 is a perspective view of the sliding panel of the present invention;

FIG. 5 is a schematic longitudinal sectional view of the storage case of the present invention; .

In the figure: 10. a base plate; 11. grinding blocks; 12. a sliding plate; 13. a first motor; 14. a first sliding chute; 15. a gear; 16. a drive shaft; 17. a first driven shaft; 18. a second driven shaft; 19. a first vertical plate; 20. an electric hydraulic oil cylinder; 21. a second motor; 22. a push rod; 23. a storage box; 24. a partition panel; 25. a pushing block; 26. a lower chute; 27. a limiting plate; 28. and (4) a feed opening.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a pipe end polishing device for corrosion prevention of a 3PE steel pipe comprises a bottom plate 10, a polishing mechanism is arranged on the bottom plate 10, the polishing mechanism comprises a polishing block 11, a sliding plate 12, a first motor 13, a first sliding chute 14, a gear 15, a driving shaft 16, a first driven shaft 17, a second driven shaft 18 and a first vertical plate 19, the polishing block 11 is fixedly connected with the sliding plate 12, the sliding plate 12 is slidably connected with the bottom plate 10, a shell part of the first motor 13 is fixedly connected with a top surface of the bottom plate 10, the gear 15 is fixedly connected with an output shaft of the first motor 13, the sliding chute 14 is arranged on a left side wall of the sliding plate 12, the gear 15 is positioned in the first sliding chute 14, notches matched with the gear 15 are arranged on both an inner top surface of the sliding plate 12 and an inner ground surface of the sliding plate 12, the first vertical plate 19 is fixedly connected with the bottom plate 10, the first driven shaft 17 is rotatably connected with the first vertical plate 19 uniformly, the driving shaft 16 is movably connected with the first vertical plate 19, the steel pipe to be polished is placed between the first driven shaft 17 and the second driven shaft 18, the first motor 13 is electrified to drive the gear 15 to rotate, when teeth of the gear 15 rotate to be meshed with notches in the inner top surface of the sliding plate 12, the gear 15 rotates to drive the sliding plate 12 to slide backwards, the sliding plate 12 drives the polishing block 11 to slide backwards to polish the left end face of the steel pipe, when the teeth of the gear 15 rotate to be meshed with the notches in the inner bottom surface of the sliding plate 12, the gear 15 pushes the sliding plate 12 to slide forwards to drive the polishing block 11 to polish the left end face of the steel pipe again, the first driven shaft 17 and the second driven shaft 18 are matched to limit the steel pipe, the steel pipe is prevented from being displaced when force in the horizontal direction given by the polishing block 11 is received, and the polishing effect is improved.

The grinding block 11 is fixedly connected with the right side wall of the sliding plate 12, the first vertical plate 19 is positioned right above the grinding block 11, the first driven shaft 17 and the second driven shaft 18 are rotatably connected with the left side wall of the first vertical plate 19, the gear 15 only has half circle of teeth, the gear 15 is matched with the first sliding groove 14, the grinding mechanism further comprises an electric hydraulic oil cylinder 20 and a second motor 21, the electric hydraulic oil cylinder 20 is fixedly connected with the first vertical plate 19, an output shaft of the electric hydraulic oil cylinder 20 is rotatably connected with the driving shaft 16, the second motor 21 is slidably connected with the first vertical plate 19, an output shaft of the second motor 21 is fixedly connected with the driving shaft 16, a longitudinal section of the first vertical plate 19 is in a convex shape, a shell part of the second motor 21 is slidably connected with the left side wall of the first vertical plate 19, an output shaft of the second motor 21 and the driving shaft 16 are positioned on the same Y axis, a base part of the electric hydraulic oil cylinder 20 is fixedly connected with the first vertical plate 19, the electric hydraulic oil cylinder 20 is positioned right above the driving shaft 16, the polishing mechanism further comprises a lower chute 26 and a storage box 23, the storage box 23 is fixedly connected with the bottom plate 10, the top surface of the storage box 23 is provided with the lower chute 26, the storage box 23 is a cuboid, the transverse uncovered surface of the lower chute 26 is funnel-shaped, the polishing mechanism further comprises a push rod 22, a partition plate 24, a push block 25, a limiting plate 27 and a feed opening 28, the partition plate 24 penetrates through the storage box 23 to be in sliding connection, the top surface of the partition plate 24 is provided with a feed opening 28, the limiting plate 27 is fixedly connected with the storage box 23, the push block 25 is fixedly connected with the partition plate 24, the push rod 22 is fixedly connected with an electric hydraulic oil cylinder 20, the push rod 22 is attached to the push block 25, the limiting plate 27 is positioned under the partition plate 24, the partition plate 24 and the lower chute 26 are on the same vertical line, the feed opening 28 is staggered with the lower chute 26, the partition plate 24 further penetrates through the rear wall surface of the storage box 23, the push block 25 is a wedge-shaped block with a trapezoidal longitudinal section, the preceding wall slope of promotion piece 25 sets up, the horizontal cross-section of catch bar 22 is L shape, catch bar 22 and electric hydraulic cylinder 20's output shaft fixed connection and catch bar 22 and the inclined plane sliding connection who promotes piece 25, the latter half of gliding chute 26 is on same vertical line with feed opening 28, it is rotatory to drive shaft 16 through the work of second motor 21 circular telegram, drive shaft 16 drives the steel pipe rotation between driven shaft one 17 and the driven shaft two 18, utilize the driven shaft one 17 and the driven shaft two 18 and the circumference of drive shaft 16 to grind the lateral wall of steel pipe, polish the periphery of steel pipe when polishing the terminal surface of steel pipe, the efficiency is improved.

The steel pipe through 16 rotary drive driven shafts 17 of drive shaft and two 18 tops of driven shaft is rotatory for the left end face of steel pipe cooperates the 11 back-and-forth movements of sanding block at rotatory in-process, and the steel pipe slides simultaneously and rotatory on sanding block 11's right side wall, polishes the left end face of steel pipe from a plurality of positions, improves at the in-process of polishing, guarantees the roughness of steel pipe left end face, and the effect of polishing is better.

The steel pipe on the first driven shaft 17 and the second driven shaft 18 is driven to rotate through the driving shaft 16, the left end face of the steel pipe and the polishing block 11 are in a rotating type, polishing is carried out in a sliding mode, pits are avoided to be formed when the steel pipe is only excessively abraded at the position where the polishing block 11 is in contact with the steel pipe due to the fact that the steel pipe rotates on the surface of the polishing block 11, the frequency of each position of the right wall face of the polishing block 11 and the end face of the steel pipe are increased, excessive abrasion of the same position of the polishing block 11 is reduced, and the service life of the polishing block 11 is prolonged.

The steel pipe to be polished is placed in the lower chute 26, a plurality of steel pipes are stored in the upper half part of the lower chute 26 and are placed side by side, only one steel pipe can be placed in the lower half part of the lower chute 26 in the horizontal direction, the push rod 22 is driven to move upwards through the upward movement of the output shaft of the electric hydraulic oil cylinder 20, the push rod 22 pushes the push block 25 to slide backwards, the push block 25 pushes the partition plate 24 to slide backwards in the storage box 23, the discharge opening 28 on the partition plate 24 slides to be aligned with the lower chute 26, the steel pipe in the lower chute 26 falls into the discharge opening 28, when the output shaft of the electric hydraulic oil cylinder 20 moves downwards to drive the driving shaft 16 to be close to the first driven shaft 17 and the second driven shaft 18, the push block 25 moves forwards to pull the partition plate 24 forwards, the steel pipe in the discharge opening 28 slides from the top surface of the limit plate 27, the steel pipe in the discharge opening 28 slides to be separated from the top surface of the limit plate 27, and the steel pipe in the discharge opening 28 falls, the steel pipe rolls out of the opening at the lowest part of the lower chute 26, and the steel pipe falls down from the lower chute 26 when the output shaft of the electric hydraulic oil cylinder 20 rises each time the driving shaft 16 is pushed to be close to the first driven shaft 17 and the second driven shaft 18, so that the convenience of taking the steel pipe during polishing is improved.

After polishing the steel pipes above the first driven shaft 17 and the second driven shaft 18, the output shaft of the electric hydraulic oil cylinder 20 drives the driving shaft 16 to be separated from the first driven shaft 17 and the second driven shaft 18, the steel pipes stop rotating, the safety of taking out the steel pipes after polishing is improved, the upper and lower stretching of the output shaft of the electric hydraulic oil cylinder 20 is matched, after polishing is completed, one steel pipe which is not polished automatically falls, the automation degree is improved, and the efficiency is higher.

When the steel tube polishing device is used, a steel tube to be polished is placed into the lower chute 26, a plurality of steel tubes are stored in the upper half part of the lower chute 26 and placed side by side, only one steel tube can be placed in the lower half part of the lower chute 26 in the horizontal direction, the push rod 22 is driven to move upwards through the upward movement of the output shaft of the electric hydraulic oil cylinder 20, the push rod 22 pushes the push block 25 to slide backwards, the push block 25 pushes the partition plate 24 to slide backwards in the storage box 23, the discharge opening 28 on the partition plate 24 slides to be aligned with the lower chute 26, the steel tube in the lower chute 26 falls into the discharge opening 28, when the output shaft of the electric hydraulic oil cylinder 20 moves downwards to drive the driving shaft 16 to be close to the first driven shaft 17 and the second driven shaft 18, the push block 25 moves forwards to pull the partition plate 24 forwards, the steel tube in the discharge opening 28 slides from the top surface of the limit plate 27, the steel tube in the discharge opening 28 slides to be separated from the top surface of the limit plate 27, and the steel tube in the discharge opening 28 falls, rolling out from the lowest opening of the lower chute 26, driving the driving shaft 16 to be close to the first driven shaft 17 and the second driven shaft 18 by the output shaft of the electric hydraulic oil cylinder 20, clamping the steel pipes on the first driven shaft 17 and the second driven shaft 18, driving the driving shaft 16 to rotate by electrifying the second motor 21, driving the steel pipes between the first driven shaft 17 and the second driven shaft 18 to rotate by the driving shaft 16, grinding the side walls of the steel pipes by utilizing the first driven shaft 17, the second driven shaft 18 and the circumference of the driving shaft 16, electrifying the first motor 13 to drive the gear 15 to rotate, when the teeth of the gear 15 rotate to be engaged with the notches on the inner top surface of the sliding plate 12, the gear 15 rotates to drive the sliding plate 12 to slide backwards, the sliding plate 12 drives the polishing block 11 to slide backwards to polish the left end surface of the steel pipe, when the teeth of the gear 15 rotate to engage with the notches on the inner bottom surface of the sliding plate 12, the gear 15 pushes the sliding plate 12 to slide forward to drive the grinding block 11 to grind the left end surface of the steel pipe again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pipe end equipment of polishing that is used for anticorrosive outside 3PE steel pipe, includes bottom plate (10), its characterized in that: the grinding mechanism is arranged on the bottom plate (10) and comprises a grinding block (11), a sliding plate (12), a motor I (13), a sliding groove I (14), a gear (15), a driving shaft (16), a driven shaft I (17), a driven shaft II (18) and a vertical plate I (19), the grinding block (11) is fixedly connected with the sliding plate (12), the sliding plate (12) is slidably connected with the bottom plate (10), the outer shell part of the motor I (13) is fixedly connected with the top surface of the bottom plate (10), the gear (15) is fixedly connected with an output shaft of the motor I (13), the sliding groove I (14) is formed in the left side wall of the sliding plate (12), the gear (15) is located in the sliding groove I (14), notches matched with the gear (15) are formed in the inner top surface of the sliding plate (12) and the inner ground surface of the sliding plate (12), the vertical plate I (19) is fixedly connected with the bottom plate (10), and the vertical plate I (19) is uniformly and rotatably connected with the driven shaft, the driving shaft (16) is movably connected with the first vertical plate (19).

2. The pipe end grinding device for the external corrosion prevention of the 3PE steel pipe, according to claim 1, is characterized in that: the grinding block (11) is fixedly connected with the right side wall of the sliding plate (12), the vertical plate I (19) is located on the right side of the grinding block (11), the driven shaft I (17) and the driven shaft II (18) are rotatably connected with the left side wall of the vertical plate I (19), the gear (15) only has a half circle of teeth, and the gear (15) is matched with the sliding groove I (14).

3. The pipe end grinding device for the external corrosion prevention of the 3PE steel pipe, according to claim 2, is characterized in that: the polishing mechanism further comprises an electric hydraulic oil cylinder (20) and a second motor (21), the electric hydraulic oil cylinder (20) is fixedly connected with the first vertical plate (19), an output shaft of the electric hydraulic oil cylinder (20) is rotatably connected with the driving shaft (16), the second motor (21) is slidably connected with the first vertical plate (19), and an output shaft of the second motor (21) is fixedly connected with the driving shaft (16).

4. The pipe end grinding device for the external corrosion prevention of the 3PE steel pipe, according to claim 3, is characterized in that: the vertical section of the first vertical plate (19) is in a convex shape, the outer shell part of the motor II (21) is in sliding connection with the left side wall of the first vertical plate (19), the output shaft of the motor II (21) and the driving shaft (16) are located on the same Y axis, the base part of the electric hydraulic oil cylinder (20) is fixedly connected with the first vertical plate (19), and the electric hydraulic oil cylinder (20) is located right above the driving shaft (16).

5. The pipe end grinding device for the external corrosion prevention of the 3PE steel pipe, according to claim 4, is characterized in that: the polishing mechanism further comprises a lower sliding groove (26) and a storage box (23), the storage box (23) is fixedly connected with the bottom plate (10), and the top surface of the storage box (23) is provided with the lower sliding groove (26).

6. The pipe end grinding device for the external corrosion prevention of the 3PE steel pipe, according to claim 5, is characterized in that: the storage box (23) is a cuboid, and the transverse uncovering surface of the lower chute (26) is funnel-shaped.

7. The pipe end grinding device for the external corrosion prevention of the 3PE steel pipe, according to claim 6, is characterized in that: grinding machanism still includes catch bar (22), partition panel (24), promotes piece (25), limiting plate (27) and feed opening (28), storage box (23) sliding connection is run through in partition panel (24), and the feed opening (28) are established to the top surface of partition panel (24), limiting plate (27) and storage box (23) fixed connection, promote piece (25) and partition panel (24) fixed connection, catch bar (22) and electric hydraulic cylinder (20) fixed connection and catch bar (22) and promote piece (25) laminating.

8. The pipe end grinding device for the external corrosion prevention of the 3PE steel pipe, according to claim 7, is characterized in that: limiting plate (27) are located under partition panel (24) and limiting plate (27), partition panel (24) and lower spout (26) on same vertical line, and feed opening (28) and lower spout (26) stagger the setting, and partition panel (24) still run through the back wall of storage box (23), promote piece (25) and be trapezoidal wedge for longitudinal section, the antetheca slope setting of promotion piece (25), the horizontal cross-section of catch bar (22) is L shape, catch bar (22) and electric hydraulic cylinder (20) output shaft fixed connection and catch bar (22) and the inclined plane sliding connection of catch bar (25).