An axial transportation device for socket pipes and a pipe surface treatment system

Abstract

The present invention provides an axial transportation device for socket and spigot pipes, which comprises a plurality of sets of supporting wheels. The sets of supporting wheels are composed of supporting wheel mechanisms arranged perpendicular to the axis of the socket and spigot pipes. The supporting wheel mechanisms are arranged on both axial sides of the socket and spigot pipes during transportation. The supporting wheel mechanisms are active supporting wheel mechanisms or driven supporting wheel mechanisms. The set of supporting wheels includes one active supporting wheel mechanism and one driven supporting wheel mechanism, or includes two active supporting wheel mechanisms. In the set of supporting wheels of the present invention, the supporting wheels rotate in place, and the rotation speed of the supporting wheel body and the angle of the supporting wheel body can be adjusted to match the rotation speed and the axial moving speed of the ductile iron pipe, improving the transportation stability of the ductile iron pipe. At the same time, the operation time and operation efficiency during the cleaning and spraying of the ductile iron pipe are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of the production of socket and spigot pipes, and particularly relates to an axial transportation device for socket and spigot pipes and a pipe outer surface treatment system. Background Art

[0002] In the production of ductile iron pipes, it is usually necessary to carry out treatment work such as surface cleaning and spraying on their surfaces. As a kind of socket and spigot pipe, due to its heavy weight, large volume, and a certain arc design between the socket and the pipe wall, the movement during its cleaning or spraying treatment is greatly restricted. For example, when it is necessary to clean the outer wall of a ductile iron pipe, it is necessary to set a transport vehicle that can transport the ductile iron pipe offline at a specific position on the production line, and transport the ductile iron pipe axially offline to the "room" for shot blasting of the outer wall for cleaning. The biggest drawback of this method is the discontinuity of the cleaning operation. The time for transporting the ductile iron pipe offline and back to the line is relatively long, the production efficiency is extremely low, and the floor area is very large. If a traditional idler drive device is used to transport the ductile iron pipe, since there will be a height difference when the socket passes through the idler, the ductile iron pipe will jolt, and the ductile iron pipe is not only likely to fall off, but the continuous jolting and vibration are also likely to shorten the service life of the transport device or cause damage to the workpieces of the transport device. Summary of the Invention

[0003] The purpose of the present invention is to solve the disadvantages existing in the prior art, and provide an axial transportation device for socket and spigot pipes and a pipe surface treatment system with simple operation and stable transmission.

[0004] The technical solution adopted by the present invention is as follows: an axial transportation device for socket and spigot pipes, including a plurality of idler groups, the idler groups are composed of idler mechanisms arranged perpendicular to the axis of the socket and spigot pipe, the idler mechanisms are arranged on both axial sides of the socket and spigot pipe during transportation, the idler mechanisms are active idler mechanisms or driven idler mechanisms, and the idler group includes one active idler mechanism and one driven idler mechanism, or includes two active idler mechanisms;

[0005] The active idler mechanism includes: an active wheel, an idler support device, and an idler drive device. The idler is rotatably arranged on the upper part of the idler support device, and the idler drive device drives the idler to rotate. The idler contacts the socket and spigot pipe during transportation and drives the socket and spigot pipe to rotate axially along the pipe axis;

[0006] The driven idler mechanism includes: a driven wheel and an idler support device. The idler is rotatably arranged on the upper part of the idler support device and contacts the socket and spigot pipe during transportation;

[0007] In the idler group, a vertical plane A passing through the center point of the idler and perpendicular to the horizontal plane forms an angle α with the axis of the socket and spigot pipe, and the angle α is greater than 0° and less than 90°;

[0008] The said supporting roller sets are arranged at intervals along the axial direction of the socket pipe, and the set interval N is less than or equal to 1 / 3 of the fixed-length L of the socket pipe.

[0009] Furthermore, the shape of the supporting rollers in the said supporting roller sets is round cake type or sphere, and the end part is an arc surface.

[0010] Furthermore, the end part of the said supporting roller is sleeved with a circular elastic material.

[0011] Furthermore, the end part of the projection of the said supporting roller on the vertical plane passing through the center of the supporting roller and perpendicular to the vertical plane A is bow-shaped, and the height H of the bow shape is ≥ 1 / 2 (outer diameter D of the socket - outer diameter d of the spigot).

[0012] Furthermore, the axial transportation speed V of the socket pipe workpiece is ≤ 1 m / s.

[0013] Furthermore, the width of the said supporting roller is greater than or equal to 50 mm.

[0014] Furthermore, the included angle α is greater than 80° and less than 90°.

[0015] A socket pipe outer surface treatment system includes a socket pipe axial transportation device and a socket pipe outer surface treatment device.

[0016] Furthermore, the socket pipe outer surface treatment device is an outer wall cleaning device or an outer wall spraying device.

[0017] Furthermore, the axial transportation speed 0 m / s < V ≤ 0.2 m / s of the socket pipe workpiece.

[0018] The beneficial effects obtained by the present invention are as follows:

[0019] 1. Realize the axial transportation of the socket pipe in the form of supporting rollers;

[0020] 2. Reduce the pipeline damage caused by the jumping of the step between the socket and spigot of the socket pipe during axial transportation;

[0021] 3. Improve the influence on the transportation device during the transportation of large pipeline workpieces and improve the service life of the transportation device;

[0022] 4. Realize the simultaneous movement of rotation around the workpiece axis and axial transportation of the socket pipe workpiece during transportation;

[0023] 5. Realize the outer surface treatment of the socket pipe workpiece without taking it offline.

[0024] In the supporting roller set of the present invention, the supporting roller rotates in place, and the rotation speed of the supporting roller body and the angle of the supporting roller body can be adjusted to match the rotation speed and axial movement speed of the ductile iron pipe, improving the transportation stability of the ductile iron pipe. At the same time, the operation efficiency during cleaning and spraying of the ductile iron pipe is improved and the operation time is shortened.

[0025] The ductile iron pipe is placed on the longitudinally arranged supporting roller set, and the rotation of the ductile iron pipe and its axial transportation are realized through the rotation of the driving supporting roller and the driven supporting roller. The rotation speeds of multiple groups of supporting rollers are frequency conversion adjustable to achieve the axial movement speed of ductile iron pipes of different specifications and match the production efficiency of the production line. The present invention overcomes the vibration caused by the undulation of the "big head" of the socket during the transportation of socket and spigot pipes through the design of the supporting roller, enabling the socket and spigot pipe to have undulation without vibration during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the present invention;

[0027] Figure 2 is a schematic structural diagram of the driving wheel of the present invention;

[0028] Figure 3 is a schematic cross-sectional structural diagram of the driving wheel of the present invention;

[0029] Figure 4 is a schematic structural diagram during the implementation of the present invention;

[0030] Figure 5 is a schematic diagram of the included angle between elevation A of the present invention and the pipe axis Figure 1 ;

[0031] Figure 6 is a schematic diagram of the included angle between elevation A of the present invention and the pipe axis Figure 2 ;

[0032] Figure 7 is a schematic structural diagram of an embodiment of the present invention Figure 1 ;

[0033] Figure 8 is a schematic structural diagram of an embodiment of the present invention Figure 2 ;

[0034] Among them, 1 represents the driving wheel, 2 represents the driven wheel, 3 represents the protective cover, 4 represents the supporting roller, 5 represents the outer wall cleaning machine, 6 represents the socket and spigot pipe, 7 represents the supporting roller support device, and 8 represents the supporting roller drive device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0036] Such as Figures 1 - 4As shown in the figure, an axial transportation device for socket and spigot pipes includes a plurality of sets of supporting wheels. The sets of supporting wheels are composed of supporting wheel mechanisms arranged perpendicular to the axis of the socket and spigot pipe 6. The supporting wheel mechanisms are arranged on both axial sides of the socket and spigot pipe 6 during transportation. The supporting wheel mechanisms are active supporting wheel mechanisms or passive supporting wheel mechanisms. The set of supporting wheels includes one active supporting wheel mechanism and one passive supporting wheel mechanism, or includes two active supporting wheel mechanisms;

[0037] The active supporting wheel mechanism includes: an active wheel 1, a supporting wheel support device 7, and a supporting wheel driving device 8. The active wheel 1 is rotatably arranged on the upper part of the supporting wheel support device 7. The supporting wheel driving device 8 is a reduction motor that drives the supporting wheel to rotate. The active wheel 1 contacts the socket and spigot pipe 6 during transportation and drives the socket and spigot pipe 6 to rotate axially along the pipe axis;

[0038] The passive supporting wheel mechanism includes: a passive wheel 2 and a supporting wheel support device 7. The passive wheel 2 is rotatably arranged on the upper part of the supporting wheel support device 7 and contacts the socket and spigot pipe 6 during transportation;

[0039] There is an included angle α between the vertical plane A passing through the center point of the supporting wheel 4 in the set of supporting wheels and the axis of the socket and spigot pipe 6. The included angle α is greater than 0° and less than 90°;

[0040] The sets of supporting wheels are arranged at intervals along the axis direction of the socket and spigot pipe 6. The set interval N is less than or equal to 1 / 3 of the fixed-length L of the socket and spigot pipe 6.

[0041] The shape of the supporting wheel 4 in the set of supporting wheels is a round cake shape or a sphere, and the end is an arc surface. The end of the supporting wheel 4 is sleeved with a circular elastic material. The projection end of the supporting wheel 4 on the vertical plane perpendicular to the plane A passing through the center of the supporting wheel is a bow shape, and the height H of the bow shape is ≥ 1 / 2 (outer diameter D of the socket - outer diameter d of the spigot). The axial transportation speed V of the socket and spigot pipe 6 workpiece is ≤ 1 m / s. The width of the supporting wheel 4 is greater than or equal to 50 mm. The included angle α is greater than 80° and less than 90°.

[0042] The outer surface treatment device for the socket and spigot pipe 6 is an outer wall cleaning device or an outer wall spraying device. The axial transportation speed V of the socket and spigot pipe 6 workpiece is 0 m / s < V ≤ 0.2 m / s.

[0043] Embodiment: Taking the outer wall cleaning of ductile iron pipes as an example, specifically in implementation, the active supporting wheel 1 and the passive supporting wheel 2 rotate in place by themselves to axially move the socket and spigot pipe 6 towards the outer wall cleaning machine 5. When the spigot of the socket and spigot pipe 6 enters the range of the outer wall cleaning machine 5, the cleaning operation starts. When the socket and spigot pipe 6 axially moves to the required working position, a new socket and spigot pipe 6 is continuously moved towards the position of the outer wall cleaning machine. When the outer wall cleaning of the socket and spigot pipe 6 is completed, it is transported to the outer wall cleaning supporting wheel below and enters the next process of the production line, and so on in a cycle.

[0044] The outer wall cleaning machine 7 is provided with a protective cover 3 to protect the working environment.

[0045] The socket pipe 6 automatically moves axially while rotating on the supporting roller assembly. All equipment operates on the spot and does not need to be moved or positioned, making the entire production process simpler and more controllable. The process of the socket pipe 6 transporting the upper supporting roller body 4 and the lower supporting roller body 4 does not affect the operation of the outer wall cleaning machine, so as to achieve continuous and stable outer wall cleaning operations and improve the operating time and operating rate. The axial movement speed can be adjusted according to specifications by adjusting the speed and angle of the active supporting roller 1. The above three points ensure the reliability, operating time, operating rate and operating rhythm of the equipment, and improve the operating efficiency.

[0046] The socket pipe 6 rotates and is transported to the left side at the same time. When the "big head" of the socket of the socket pipe 6 passes the highest point of the right side supporting roller body 4, the roller 4 of the leftmost supporting roller group below the other fulcrum of the socket pipe 6 is supported by the socket pipe 6. When the "big head" of the socket of the socket pipe 6 is about to leave the next supporting roller group, the adjacent supporting roller group has supported the socket pipe 6, and the other two fulcrums are transferred to the corresponding next supporting roller groups in turn. The design of the supporting wheel 4 of the present invention ensures the height difference and curvature of the highest and lowest points of contact between the active supporting wheel 1 and the driven supporting wheel 2 and the socket pipe 6 by increasing the width of the supporting wheel 4. When the socket pipe 6 is transported axially, if the supporting wheel 4 is not provided with a bow structure, it will cause jumping or vibration during transportation due to the difference in the outer diameter of the pipe socket. If a bow is provided at the end of the supporting wheel 4, the end of the socket will slowly fall along the part of the bow arc during movement. When it has not completely separated from the end point of the arc, the highest point of the bow of the next supporting wheel 4 adjacent to the forward direction of the socket pipe 6 will contact the pipe body, thereby preventing the socket pipe from jumping or vibrating and causing damage to the pipeline and the transportation device.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An axial transportation device for socket and spigot pipes, characterized in that: It includes multiple sets of supporting wheels. The sets of supporting wheels are composed of supporting wheel mechanisms arranged perpendicular to the axis of the socket-and-spigot pipe. The supporting wheel mechanisms are arranged on both axial sides of the socket-and-spigot pipe during transportation. The supporting wheel mechanisms are either active supporting wheel mechanisms or passive supporting wheel mechanisms. The set of supporting wheels includes one active supporting wheel mechanism and one passive supporting wheel mechanism, or includes two active supporting wheel mechanisms; The active supporting wheel mechanism includes: an active wheel, a supporting wheel support device, and a supporting wheel driving device. The supporting wheel is rotatably arranged on the upper part of the supporting wheel support device. The supporting wheel driving device drives the supporting wheel to rotate. The supporting wheel contacts the socket-and-spigot pipe during transportation and drives the socket-and-spigot pipe to rotate axially along the pipe axis and revolve; The passive supporting wheel mechanism includes: a passive wheel and a supporting wheel support device. The supporting wheel is rotatably arranged on the upper part of the supporting wheel support device and contacts the socket-and-spigot pipe during transportation; In the set of supporting wheels, there is an included angle α between the vertical plane A passing through the center point of the supporting wheel perpendicular to the horizontal plane and the axis of the socket-and-spigot pipe. The included angle α is greater than 80° and less than 90°; The sets of supporting wheels are arranged at intervals along the axis direction of the socket-and-spigot pipe. The set interval N is less than or equal to 1 / 3 of the fixed-length L of the socket-and-spigot pipe; The shape of the supporting wheels in the set of supporting wheels is round cake-shaped or spherical, and the end is an arc surface; A circular elastic material is sleeved on the end of the supporting wheel; The projection end of the supporting wheel on the vertical plane perpendicular to the plane A passing through the center of the supporting wheel is bow-shaped, and the height H of the bow is ≥1 / 2 (outer diameter D of the socket - outer diameter d of the spigot); The axial transportation speed V of the socket-and-spigot pipe workpiece is ≤1 m / s; The width of the supporting wheel in the horizontal direction is greater than or equal to 50 mm.

2. An outer surface treatment system for socket and spigot pipes, characterized in that, It includes an axial transportation device for the socket-and-spigot pipe and a surface treatment device for the outer surface of the socket-and-spigot pipe; The axial transportation device for the socket-and-spigot pipe includes: multiple sets of supporting wheels. The sets of supporting wheels are composed of supporting wheel mechanisms arranged perpendicular to the axis of the socket-and-spigot pipe. The supporting wheel mechanisms are arranged on both axial sides of the socket-and-spigot pipe during transportation. The supporting wheel mechanisms are either active supporting wheel mechanisms or passive supporting wheel mechanisms. The set of supporting wheels includes one active supporting wheel mechanism and one passive supporting wheel mechanism, or includes two active supporting wheel mechanisms; The active supporting wheel mechanism includes: an active wheel, a supporting wheel support device, and a supporting wheel driving device. The supporting wheel is rotatably arranged on the upper part of the supporting wheel support device. The supporting wheel driving device drives the supporting wheel to rotate. The supporting wheel contacts the socket-and-spigot pipe during transportation and drives the socket-and-spigot pipe to rotate axially along the pipe axis and revolve; The passive supporting wheel mechanism includes: a passive wheel and a supporting wheel support device. The supporting wheel is rotatably arranged on the upper part of the supporting wheel support device and contacts the socket-and-spigot pipe during transportation; In the set of supporting wheels, there is an included angle α between the vertical plane A passing through the center point of the supporting wheel perpendicular to the horizontal plane and the axis of the socket-and-spigot pipe. The included angle α is greater than 80° and less than 90°; The sets of supporting wheels are arranged at intervals along the axis direction of the socket-and-spigot pipe. The set interval N is less than or equal to 1 / 3 of the fixed-length L of the socket-and-spigot pipe; The shape of the supporting wheels in the set of supporting wheels is round cake-shaped or spherical, and the end is an arc surface; A circular elastic material is sleeved on the end of the supporting wheel; The projection end of the supporting roller on the vertical plane passing through the center of the supporting roller and perpendicular to the vertical plane A is bow-shaped, and the height H of the bow-shaped shape satisfies H≥1 / 2 (outer diameter D of the socket - outer diameter d of the spigot); The axial transportation speed V of the socket and spigot pipe workpiece is V≤1m / s; The width of the supporting roller in the horizontal direction is greater than or equal to 50mm; The outer surface treatment device for the socket and spigot pipe is arranged in the middle of the axial transportation device for the socket and spigot pipe, and is used for treating the outer surface of the socket and spigot pipe workpiece during axial transportation; The outer surface treatment device for the socket and spigot pipe is an outer wall cleaning device or an outer wall spraying device; The axial transportation speed V of the socket and spigot pipe workpiece satisfies 0m / s<V≤0.2m / s.

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