Large-diameter steel pipe continuous plastic coating feeding device and feeding method thereof

Abstract

The invention relates to the technical field of feeding equipment, discloses a large-diameter steel pipe continuous plastic coating feeding device and a feeding method thereof, and aims to solve the problem that the quality of a steel pipe is affected due to the fact that a plastic coating layer of the steel pipe is damaged. Through the arrangement of the first sliding ring and the contact pieces, the contact pieces apply axial clamping force in the opposite directions to the two ends of the steel pipe, meanwhile, the contact pieces on the two sides form an approximately-conical structure, the tip end of the conical structure stretches into the inner side of the steel pipe, and then radial movement of the steel pipe is limited; the probability of relative movement of the steel pipe and the suspension bracket is reduced, and the contact area of the suspension bracket and the steel pipe is reduced, so that the probability of damage to a plastic-coated layer of the steel pipe is synchronously reduced.

Description

Technical Field

[0001] The present application relates to the technical field of feeding equipment, and in particular to a large-diameter steel pipe continuous plastic coating feeding device and a feeding method thereof. Background Art

[0002] Plastic-coated steel pipe refers to a steel-plastic composite steel pipe that uses steel pipe as the base and has a layer of plastic anti-corrosion layer welded on the inner and outer surfaces of the steel pipe through spraying, rolling, dipping, and suction processes. Nowadays, feeding devices are often used to transport large-diameter steel pipes, thereby completing the plastic coating and subsequent related operations of the large-diameter steel pipes.

[0003] Some existing feeding devices are suspended conveying equipment, whose main structure includes a rail car, a vertical moving part, a horizontal moving part and a suspension frame. When in use, the suspension frame is driven down to the position of the large-diameter steel pipe by the vertical moving part, and then the horizontal moving part drives the suspension frame to extend into the inside of the steel pipe. Then, the vertical moving part lifts the steel pipe through the suspension frame and drives the steel pipe to move to the corresponding equipment through the rail car. Through the above actions, the feeding operation of the steel pipe plastic coating operation is realized.

[0004] However, in the process of lifting the large-diameter steel pipe by the above-mentioned hanging frame, since the hanging frame only contacts the upper position of the inner side surface of the steel pipe, and the working environment of the steel pipe plastic coating is relatively complex, the steel pipe is prone to shaking or rotating during the hanging frame transporting the steel pipe, making the plastic coating layer on the inner side of the steel pipe easy to move relative to the hanging frame, thereby causing damage to the plastic coating layer on the inner side of the steel pipe, thereby affecting the quality of the steel pipe. Summary of the invention

[0005] The present application proposes a continuous plastic coating and feeding device for large-diameter steel pipes, which has the advantages of reducing the probability of relative movement between the steel pipe and the suspension frame and reducing damage to the plastic coating layer of the steel pipe. It is used to solve the problem of damage to the plastic coating layer of the steel pipe, which affects the quality of the steel pipe.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a large-diameter steel pipe continuous plastic coating feeding device, comprising: a rail car, used to travel on a corresponding track, a vertical moving member is arranged inside the rail car, a fixed seat is fixedly installed at the lower end of the vertical moving member, and a suspension frame is arranged at the lower side of the fixed seat;

[0007] The suspension frame includes a connecting piece, a working piece, an electrically controlled telescopic rod, a No. 1 slip ring, a contact piece and a connecting plate. The working piece is fixedly installed on the lower side of the connecting piece, and the electrically controlled telescopic rod is fixedly installed at the middle position of the outer side of the working piece. No. 1 slip rings are provided on both sides of the electrically controlled telescopic rod. The No. 1 slip ring is slidably sleeved on the outer surface of the working piece. The output end of the electrically controlled telescopic rod is fixedly connected with the No. 1 slip ring in the corresponding direction. Contact pieces are circumferentially equidistantly provided on the outer side of the working piece and on the side of the No. 1 slip ring facing away from the electrically controlled telescopic rod. The side of the contact piece facing the corresponding No. 1 slip ring is hinged and fixed to the outer surface of the working piece. A connecting plate is provided on the side of the No. 1 slip ring facing the corresponding contact piece. Both sides of the connecting plate are hinged and fixed to the No. 1 slip ring and the outer surface of the contact piece.

[0008] Furthermore, a horizontal moving part is slidably engaged inside the fixed seat, and a power gear is symmetrically arranged inside the fixed seat and located on the upper side of the horizontal moving part. The power gear is driven to rotate by a power mechanism, and the upper surface of the horizontal moving part is provided with gear teeth that cooperate with the power gear. The upper surface of the connecting part forms a fixed connection with the horizontal moving part.

[0009] Furthermore, the suspension bracket also includes a groove and an elastic member. The outer surface of the contact member is provided with a groove, the groove is an arc-shaped groove, the groove is far away from the corresponding No. 1 slip ring, an elastic member is arranged inside the groove, and both ends of the elastic member are connected to the groove.

[0010] Furthermore, the elastic member is a rubber member, and the elastic member fits the groove.

[0011] Furthermore, the elastic member is a rubber airbag, which is used to increase the contact area between the elastic member and the steel pipe.

[0012] Furthermore, a rotating member is rotatably installed in the groove and located on one side of the elastic member, and the rotating member is fixedly connected to one end of the elastic member.

[0013] Furthermore, a No. 2 slip ring is provided between the working piece and the corresponding contact piece, and the No. 2 slip ring is slidably sleeved on the outer side surface of the working piece. A branch rope is provided on the side of the No. 2 slip ring facing away from the No. 1 slip ring, and one end of the branch rope is fixedly connected to the No. 2 slip ring, and the other end of the branch rope extends into the groove of the corresponding contact piece. In the initial state, the branch rope is relaxed, and a winding wheel is rotatably installed on the outer surface of the working piece and located between the No. 1 slip rings on both sides. The winding wheel has its own power source, and a main rope is provided inside the working piece, and one end of the main rope is wound on the surface of the winding wheel, and the other end of the main rope is fixedly connected to the No. 2 slip ring in the corresponding direction.

[0014] A feeding method for a large-diameter steel pipe comprises the following steps:

[0015] The first step is to drive the suspension frame to move down to the position of the large-diameter steel pipe through the vertical moving part, and then the power gear drives the horizontal moving part and the suspension frame to move horizontally, so that the working part of the suspension frame extends into the center position of the inner side of the steel pipe;

[0016] Step 2: The output rod of the electric telescopic rod is contracted, so that the No. 1 slip ring pulls the corresponding contact piece to open through the connecting plate, and finally the contact piece contacts the ports at both ends of the steel pipe, so that the elastic piece contacts the ports of the steel pipe synchronously;

[0017] Step 3: The reel rotates, thereby pulling the main rope and the corresponding No. 2 slip ring, so that the No. 2 slip ring drives the rotating part to rotate, thereby causing the elastic part contacting the steel pipe end to twist, so that the contact force between the elastic part and the steel pipe end is further increased;

[0018] The fourth step is that the vertical moving part lifts the steel pipe through the hanging frame and drives the steel pipe to move to the corresponding equipment through the rail car. Finally, the steel pipe is placed in the specified position and the contact part is reset. Through the above actions, the feeding operation of the steel pipe plastic coating operation is realized.

[0019] This application has the following beneficial effects:

[0020] The present application provides a large-diameter steel pipe continuous plastic coating and feeding device, which, through the setting of a No. 1 slip ring and a contact piece, enables the contact piece to apply axial clamping forces in relative directions to the two ends of the steel pipe. At the same time, the contact pieces on both sides form an approximately conical structure, and the tip of the conical structure extends into the inner side of the steel pipe, thereby limiting the radial movement of the steel pipe. Through the above-mentioned setting, not only the probability of relative movement between the steel pipe and the hanger is reduced, but also the contact area between the hanger and the steel pipe is reduced, so that the probability of damage to the plastic coating layer of the steel pipe is simultaneously reduced.

[0021] Through the arrangement of the groove and the elastic member, in the process of the contact member contacting the two ends of the steel pipe, the contact member will drive the groove close to the two ends of the steel pipe, so that the elastic member contacts the port of the steel pipe. Through this arrangement, the hard contact force between the hanger and the steel pipe is reduced, so that the probability of damage to the plastic coating layer of the steel pipe is further reduced.

[0022] Through the arrangement of the No. 2 slip ring and the rotating part, in the process of the elastic part contacting the steel pipe port, the No. 2 slip ring drives the rotating part to rotate, so that the elastic part contacting the steel pipe port is twisted, so that the contact force between the elastic part and the steel pipe port is further increased, and at the same time, the surface texture of the twisted elastic part is increased, so that the probability of relative rotation between the steel pipe and the suspension frame is further reduced. Through the above arrangement, the probability of damage to the plastic coating layer of the steel pipe is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0024] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0025] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0026] Figure 2 For the present invention Figure 1 A partial enlarged schematic diagram of the structure at center A;

[0027] Figure 3 For the present invention Figure 1 A partial enlarged schematic diagram of the structure at B in the middle;

[0028] Figure 4 For the present invention Figure 1 A partial enlarged schematic diagram of the structure at C in the middle;

[0029] Figure 5 This is a schematic diagram of the working state of the contact element in the first embodiment of the present invention;

[0030] Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of the structure at D in the middle;

[0031] Figure 7 This is a schematic diagram of the internal structure of the groove in the first embodiment of the present invention;

[0032] Figure 8 It is a partial structural diagram of the second embodiment of the present invention;

[0033] Fig. 9 Schematic diagram of the internal structure of the groove in the second embodiment of the present invention.

[0034] In the figure: 1. rail car; 2. fixed seat; 3. horizontal moving part; 4. power gear; 5. suspension frame; 50. connecting part; 51. working part; 52. electric control telescopic rod; 53. No. 1 slip ring; 54. contact part; 55. connecting plate; 56. groove; 57. elastic part; 6. No. 2 slip ring; 7. branch rope; 8. rotating part; 9. winding wheel; 10. main rope. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] Example 1: Please refer to Figure 1-Figure 7 A large-diameter steel pipe continuous plastic coating feeding device includes a rail car 1 for traveling on a corresponding track. A vertical moving part (such as a telescopic rod) is arranged inside the rail car 1. A fixed seat 2 is fixedly installed at the lower end of the vertical moving part. A horizontal moving part 3 is slidably connected inside the fixed seat 2. A power gear 4 is symmetrically arranged inside the fixed seat 2 and located on the upper side of the horizontal moving part 3. The power gear 4 is driven to rotate by a power mechanism (existing technology such as a motor, not shown in the figure). The upper surface of the horizontal moving part 3 is provided with gear teeth that cooperate with the power gear 4. A suspension frame 5 is arranged on the lower side of the fixed seat 2. The horizontal moving part 3 is fixedly connected to the suspension frame 5. The suspension frame 5 includes a connecting member 50, a working member 51, an electrically controlled telescopic rod 52, a No. 1 slip ring 53, a contact member 54 and a connecting plate 55. The upper surface of the connecting member 50 forms a connection with the horizontal moving part 3. Fixed connection, a working piece 51 is fixedly installed on the lower side of the connecting piece 50, an electric-controlled telescopic rod 52 is fixedly installed in the middle position of the outer side of the working piece 51, a No. 1 slip ring 53 is provided on both sides of the electric-controlled telescopic rod 52, the No. 1 slip ring 53 is slidably sleeved on the outer surface of the working piece 51, and the output end of the electric-controlled telescopic rod 52 is fixedly connected with the No. 1 slip ring 53 in the corresponding direction, and the outer side of the working piece 51 and the No. 1 slip ring 53 are circumferentially equidistantly arranged on the side of the No. 1 slip ring 53 facing away from the electric-controlled telescopic rod 52. The contact pieces 54 are hingedly fixed to the outer surface of the working piece 51 on the side facing the corresponding No. 1 slip ring 53, and a connecting plate 55 is provided on the side of the No. 1 slip ring 53 facing the corresponding contact piece 54. One side of the connecting plate 55 is hingedly fixed to the side corresponding to the No. 1 slip ring 53, and the other side of the connecting plate 55 is hingedly fixed to the outer surface of the contact piece 54.

[0037] When in use, the vertical moving member drives the suspension frame 5 to move down to the position of the large-diameter steel pipe, and then the power gear 4 drives the horizontal moving member 3 and the suspension frame 5 to move horizontally, so that the working piece 51 of the suspension frame 5 extends into the center position of the inner side of the steel pipe (a sensor is set inside the working piece 51, so that the working piece 51 can achieve the above effect, which is a prior art and not shown in the figure). Then, the output rod of the electric telescopic rod 52 contracts, so that the No. 1 slip ring 53 pulls the corresponding contact piece 54 to open through the connecting plate 55, and finally makes the contact piece 54 contact the ports at both ends of the steel pipe. Through this action, axial clamping forces in relative directions are applied to the two ends of the steel pipe. At the same time, the contact pieces 54 opened on both sides form a nearly conical structure, and the tip of the conical structure extends into the inner side of the steel pipe (such as Figure 5As shown), the radial movement of the steel pipe is restricted. The above arrangement not only reduces the probability of relative movement between the steel pipe and the hanger 5, but also reduces the contact area between the hanger 5 and the steel pipe, thereby reducing the probability of damage to the plastic coating layer of the steel pipe. Afterwards, the vertical moving part lifts the steel pipe through the hanger 5, and drives the steel pipe to the corresponding equipment through the rail car 1. Finally, the steel pipe is placed at the specified position, and the contact member 54 is reset. Through the above actions, the feeding operation of the steel pipe plastic coating operation is realized.

[0038] See also Figure 1-Figure 7 The suspension bracket 5 also includes a groove 56 and an elastic member 57. The outer surface of the contact member 54 is provided with a groove 56. The groove 56 is an arc-shaped groove. The groove 56 is far away from the corresponding No. 1 slip ring 53. An elastic member 57 is arranged inside the groove 56. Both ends of the elastic member 57 are fixedly connected with the groove 56. The elastic member 57 is a rubber member. The elastic member 57 fits with the groove 56.

[0039] In the process of the contact member 54 contacting the two ends of the steel pipe, the contact member 54 will drive the groove 56 close to the two ends of the steel pipe, so that the elastic member 57 in the groove 56 contacts the end of the steel pipe (because the elastic member 57 is an arc structure, when the elastic member 57 contacts the end of the steel pipe, only the middle part contacts the steel pipe, while the two side parts do not contact the steel pipe). Through this setting, the hard contact force between the suspension bracket 5 and the steel pipe is reduced, so that the probability of damage to the plastic coating layer of the steel pipe is further reduced.

[0040] Example 2: Please refer to Figure 1-Figure 9 This embodiment is a further improvement on the first embodiment, and the improvement lies in that the elastic member 57 is a rubber airbag.

[0041] Through the above arrangement, when the elastic member 57 contacts the steel pipe end, the steel pipe end will be further sunken into the elastic member 57, thereby increasing the rotational resistance of the steel pipe and reducing the probability of damage to the plastic coating layer of the steel pipe.

[0042] See also Figure 1-Figure 9A No. 2 slip ring 6 is provided between the working piece 51 and the corresponding contact piece 54. The No. 2 slip ring 6 is slidably sleeved on the outer side surface of the working piece 51. A branch rope 7 is provided on the side of the No. 2 slip ring 6 facing away from the No. 1 slip ring 53. One end of the branch rope 7 is fixedly connected to the No. 2 slip ring 6, and the other end of the branch rope 7 extends into the groove 56 of the corresponding contact piece 54. In the initial state, the branch rope 7 is relaxed. A rotating member 8 is rotatably installed in the groove 56 and located on one side of the elastic member 57. The rotating member 8 is fixedly connected to one end of the elastic member 57. A winding wheel 9 is rotatably installed on the outer surface of the working piece 51 and located between the No. 1 slip rings 53 on both sides. The winding wheel 9 has its own power source. A main rope 10 is provided inside the working piece 51. One end of the main rope 10 is wound on the surface of the winding wheel 9, and the other end of the main rope 10 extends out of the working piece 51 and is fixedly connected to the No. 2 slip ring 6 in the corresponding direction.

[0043] In the process of the elastic member 57 contacting the steel pipe port, the winding wheel 9 rotates, thereby pulling the main rope 10 and the corresponding No. 2 slip ring 6, so that the No. 2 slip ring 6 drives the rotating member 8 to rotate, thereby causing the elastic member 57 contacting the steel pipe port to twist, so that the contact force between the elastic member 57 and the steel pipe port is further increased (because the steel pipe port is sunk into the elastic member 57, the elastic member 57 is twisted at this time, which will increase the contact force between the elastic member 57 and the steel pipe port). At the same time, the surface texture of the twisted elastic member 57 increases, so that the probability of relative rotation between the steel pipe and the suspension frame 5 is further reduced. Through the above arrangement, the probability of damage to the plastic coating layer of the steel pipe is reduced.

[0044] Embodiment 3: A feeding method for a large-diameter steel pipe comprises the following steps:

[0045] The first step is to drive the suspension frame 5 to move down to the position of the large-diameter steel pipe through the vertical moving member, and then the power gear 4 drives the horizontal moving member 3 and the suspension frame 5 to move horizontally, so that the working member 51 of the suspension frame 5 extends into the center position of the inner side of the steel pipe;

[0046] Step 2: The output rod of the electric telescopic rod 52 is contracted, so that the first slip ring 53 pulls the corresponding contact member 54 to open through the connecting plate 55, and finally the contact member 54 contacts the ports at both ends of the steel pipe, so that the elastic member 57 contacts the ports of the steel pipe synchronously;

[0047] Step 3: The reel 9 rotates, thereby pulling the main rope 10 and the corresponding second slip ring 6, so that the second slip ring 6 drives the rotating member 8 to rotate, thereby causing the elastic member 57 contacting the steel pipe end to twist, so that the contact force between the elastic member 57 and the steel pipe end is further increased;

[0048] Step 4: The vertical moving part lifts the steel pipe through the hanging frame 5, and drives the steel pipe to move to the corresponding equipment through the rail car 1. Finally, the steel pipe is placed at the specified position and the contact part 54 is reset. Through the above actions, the feeding operation of the steel pipe plastic coating operation is realized.

Claims

1. A large-diameter steel pipe continuous plastic coating feeding device, comprising: A rail vehicle (1) is used for traveling on a corresponding track, wherein a vertical moving member is arranged inside the rail vehicle (1), a fixing seat (2) is fixedly mounted at the lower end of the vertical moving member, and a suspension frame (5) is arranged at the lower side of the fixing seat (2); The suspension frame (5) is characterized in that the suspension frame (5) comprises a connecting member (50), a working member (51), an electrically controlled telescopic rod (52), a first slip ring (53), a contact member (54) and a connecting plate (55); the working member (51) is fixedly installed on the lower side of the connecting member (50); the electrically controlled telescopic rod (52) is fixedly installed at the middle position of the outer side of the working member (51); both sides of the electrically controlled telescopic rod (52) are provided with a first slip ring (53); the first slip ring (53) is slidably sleeved on the outer surface of the working member (51); the output end of the electrically controlled telescopic rod (52) is in contact with the opposite end. A first slip ring (53) is fixedly connected to the working piece (51) in the corresponding direction; contact pieces (54) are circumferentially equidistantly arranged on the outer side of the working piece (51) and located on the side of the first slip ring (53) facing away from the electric control telescopic rod (52); the contact pieces (54) are hingedly fixed to the outer surface of the working piece (51) on the side facing the corresponding first slip ring (53); a connecting plate (55) is arranged on the side of the first slip ring (53) facing the corresponding contact piece (54); the two sides of the connecting plate (55) are respectively hingedly fixed to the outer surfaces of the first slip ring (53) and the contact piece (54).

2. A large-diameter steel pipe continuous plastic coating feeding device according to claim 1, characterized in that: The fixing seat (2) is internally slidably engaged with a horizontal moving member (3), and a power gear (4) is symmetrically arranged inside the fixing seat (2) and located above the horizontal moving member (3). The power gear (4) is driven to rotate by a power mechanism, and the upper surface of the horizontal moving member (3) is provided with gear teeth that cooperate with the power gear (4), and the upper surface of the connecting member (50) is fixedly connected to the horizontal moving member (3).

3. A large-diameter steel pipe continuous plastic coating feeding device according to claim 2, characterized in that: The suspension frame (5) further comprises a groove (56) and an elastic member (57). The outer surface of the contact member (54) is provided with a groove (56). The groove (56) is an arc-shaped groove. The groove (56) is away from the corresponding No. 1 slip ring (53). An elastic member (57) is arranged inside the groove (56). Both ends of the elastic member (57) are connected to the groove (56).

4. A large-diameter steel pipe continuous plastic coating feeding device according to claim 3, characterized in that: The elastic member (57) is a rubber member, and the elastic member (57) fits the groove (56).

5. A large-diameter steel pipe continuous plastic coating feeding device according to claim 4, characterized in that: The elastic member (57) is a rubber airbag, which is used to increase the contact area between the elastic member (57) and the steel pipe.

6. A large-diameter steel pipe continuous plastic coating feeding device according to claim 5, characterized in that: A rotating member (8) is rotatably mounted in the groove (56) and located on one side of the elastic member (57). The rotating member (8) is fixedly connected to one end of the elastic member (57).

7. A large-diameter steel pipe continuous plastic coating feeding device according to claim 6, characterized in that: A second slip ring (6) is arranged between the working piece (51) and the corresponding contact piece (54), and the second slip ring (6) is slidably sleeved on the outer side surface of the working piece (51). A branch rope (7) is arranged on the side of the second slip ring (6) facing away from the first slip ring (53). One end of the branch rope (7) is fixedly connected to the second slip ring (6), and the other end of the branch rope (7) extends into the groove (56) of the corresponding contact piece (54). In the initial state, the branch rope (7) is in a loose setting. A winding wheel (9) is rotatably installed on the outer surface of the working piece (51) and located between the first slip rings (53) on both sides. The winding wheel (9) has its own power source. A main rope (10) is arranged inside the working piece (51), and one end of the main rope (10) is wound on the surface of the winding wheel (9), and the other end of the main rope (10) is fixedly connected to the second slip ring (6) in the corresponding direction.

8. A feeding method using the large-diameter steel pipe continuous plastic coating feeding device according to claim 7, characterized in that: The following steps are involved: The first step is to drive the suspension frame (5) to move downward to the position of the large-diameter steel pipe through the vertical moving member, and then the power gear (4) drives the horizontal moving member (3) and the suspension frame (5) to move horizontally, so that the working member (51) of the suspension frame (5) extends into the center position of the inner side of the steel pipe; In the second step, the output rod of the electrically controlled telescopic rod (52) is contracted, so that the first slip ring (53) pulls the corresponding contact piece (54) to open through the connecting plate (55), and finally the contact piece (54) contacts the ports at both ends of the steel pipe, so that the elastic piece (57) contacts the ports of the steel pipe synchronously; Step 3: The reel (9) rotates, thereby pulling the main rope (10) and the corresponding second slip ring (6), so that the second slip ring (6) drives the rotating member (8) to rotate, thereby causing the elastic member (57) contacting the steel pipe end to twist, so that the contact force between the elastic member (57) and the steel pipe end is further increased; In the fourth step, the vertical moving part lifts the steel pipe through the hanging frame (5), and drives the steel pipe to move to the corresponding equipment through the rail car (1). Finally, the steel pipe is placed at the specified position and the contact part (54) is reset. Through the above actions, the feeding operation of the steel pipe plastic coating operation is realized.

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