Special turnover unwinding gun carrier for prefabricating and folding HDPE (High-Density Polyethylene) lining pipe in factory

Abstract

The utility model provides a special turnover unwinding gun carrier for prefabricating a folding HDPE (High-Density Polyethylene) lining pipe in a factory. An unwinding frame is rotationally connected with a carrying table of the unwinding gun carrier through a support arm and is in lap joint with the carrying table through a support arm support frame; the output end of the overturning drive is connected with the supporting arm and can drive the unwinding frame to overturn in the direction away from the carrying table so that the unwinding frame can move to the position below the plane where the carrying table is located, then the gravity center of the unwinding frame can be lowered, rollover caused by the fact that the center is too high during pipe unwinding is avoided, the unwinding frame is moved to the position below the carrying table for pipe unwinding, and the pipe unwinding efficiency is improved. The worker has a relatively wide space to carry out auxiliary operation; in addition, through the design of the driving roller set, when the gear motor is started, the unwinding frame abutting against the driving roller set can be driven to rotate, the lining pipe can be continuously pushed out from the position between the two driving roller sets, then automatic pipe unwinding is achieved, time and labor are saved compared with a manual winding and unwinding mode, and the workload is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of unwinding gun carriages, in particular to a reversible unwinding gun carriage specially used for factory-prefabricated folded HDPE liner pipes. Background Art

[0002] HDPE pipe is a high-density polyethylene pipe with many good properties and advantages, such as high corrosion resistance and wear resistance, high toughness and impact resistance, etc. It can be used for a long time without damage.

[0003] Trenchless pipeline repair refers to an online repair method adopted when the pipeline environment cannot be updated or repaired by excavation or when excavation of pipe sections is very uneconomical.

[0004] This online maintenance method involves inserting an HDPE liner into the pipeline, replacing the original pipeline's conveying function with the HDPE liner. Lowering the HDPE liner requires the use of a reel-out truck to transport the reel-out rack to the site.

[0005] However, due to the large weight of the unwinding frame and the large height of the unwinding carriage from the ground, the center of gravity of the unwinding frame is too high, which makes it easy for the unwinding frame to tip over during the unwinding operation. In addition, the platform space on the unwinding carriage is limited, which makes it inconvenient for the staff to coordinate operations during the unwinding operation. Utility Model Content

[0006] In view of this, the problem to be solved by the present invention is to provide a reversible unwinding trolley specially used for factory-prefabricated folded HDPE liner pipes.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A reversible unwinding trolley specially designed for factory-prefabricated folding HDPE lined pipes. The unwinding frame is rotatably connected to the carrier of the unwinding trolley through a support arm and is overlapped with the carrier through a support arm support frame; the output end of the reversing drive is connected to the support arm, which can drive the unwinding frame to flip in a direction away from the carrier, so that the unwinding frame moves below the plane where the carrier is located.

[0009] A compensation base is also constructed on the platform of the unwinding gun carriage; the support arm support frame is an N-shaped structure, with its two ends respectively connected to the two groups of support arms, and its bottom end overlapped on the compensation base.

[0010] The flip drive is a drive cylinder 1, the mounting base of the drive cylinder 1 is rotatably connected to the carrier, and the output end of the drive cylinder 1 is rotatably connected to the support arm.

[0011] The rotating shaft of the unwinding frame is connected to the supporting arm through a bearing.

[0012] The arm support frame is also rotatably connected to a driving roller arm and an adjusting drive, and the other end of the driving roller arm is connected to a driving roller group;

[0013] The regulating drive is used to drive the driving roller support arm to move along the radial direction of the unwinding frame to adjust the distance between the driving roller group and the unwinding frame.

[0014] The advantages and positive effects of the utility model are:

[0015] (1) By driving the support arm through the driving cylinder 1, the unwinding frame connected to the support arm can be driven to flip in the direction away from the platform, so that the unwinding frame 1 moves below the plane where the platform is located, thereby lowering the center of gravity of the unwinding frame, avoiding rollover due to the center being too high when unwinding the tube. The design of moving the unwinding frame to the bottom of the platform for unwinding the tube also provides workers with a wider space for auxiliary operations.

[0016] (2) Through the design of the driving roller group, when the reduction motor is started, it can not only drive the unwinding frame that is in contact with the driving roller group to rotate, but also make the inner liner tube continuously pushed out from between the two sets of driving rollers, thereby realizing the retraction and release of the inner liner tube. Compared with the manual retraction and release method, it saves time and labor and reduces the workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a structural diagram of a reversible unwinding vehicle for factory-prefabricated foldable HDPE lined pipes in the first perspective;

[0019] Figure 2 This is a structural diagram of a reversible unwinding vehicle for factory-prefabricated foldable HDPE lined pipes in the second perspective of the present invention;

[0020] Figure 3 This is a structural diagram of a reversible unwinding vehicle for factory-prefabricated foldable HDPE lined pipes from a third-person perspective.

[0021] Figure 4 yes Figure 3 An enlarged view of the driving roller set;

[0022] Figure 5 This is a schematic diagram of the unwinding rack after it is flipped over;

[0023] In the figure: unwinding frame 1, support arm 2, drive cylinder I21, carrier 3, compensation base 31, support arm support frame 4, drive roller support arm 51, drive roller group 52, roller group support frame 53, transmission gear 54, drive gear 55, reduction motor 56, drive cylinder II61, bearing 7. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] like Figures 1 to 2 As shown, the utility model provides a reversible unwinding trolley specially used for factory-prefabricated folding HDPE lined pipes. The unwinding frame 1 is rotatably connected to the platform 3 at the end of the unwinding trolley through the support arm 2 and overlapped with the platform 3 at the front end of the unwinding trolley through the support arm support frame 4, thereby realizing the normal placement of the unwinding frame 1 on the unwinding trolley; the output end of the reversing drive is connected to the support arm 2, which can drive the unwinding frame 1 to flip in the direction away from the platform 3, so that the unwinding frame 1 moves below the plane where the platform 3 is located (that is, below the rear part of the unwinding trolley), thereby lowering the center of gravity of the unwinding frame 1, avoiding rollover due to the center being too high when unwinding the pipe, and the design of moving to the bottom of the platform 3 for unwinding the pipe also provides workers with a wider space for auxiliary operations.

[0028] Specifically, a compensation base 31 is also constructed on the platform 3 of the unwinding gun carriage. The compensation base 31 is used to provide height compensation for the overlap of the arm support frame 4. The arm support frame 4 is an N-shaped structure, and its two ends are respectively connected to the two groups of arms 2, and its bottom end is overlapped on the compensation base 31.

[0029] Specifically, the flipping drive is a driving cylinder I21, the mounting seat of the driving cylinder I21 is rotatably connected to the carrier 3, and the output end of the driving cylinder I21 is rotatably connected to the support arm 2, and then the unwinding frame 1 connected to the support arm 2 is pushed or pulled to flip the unloading platform 3 or return to the carrier 3 through the extension and contraction of the driving cylinder I21.

[0030] Specifically, the rotating shaft of the unwinding frame 1 is connected to the support arm 2 through a bearing 7. One end of the support arm 2 is a C-shaped bayonet structure, and the bearing 7 is clamped in the support arm 2; thereby, the unwinding frame 1 is rotated relative to the support arm 2, and the tube is released by the rotation of the unwinding frame 1.

[0031] like Figures 3 and 4 As shown, further, considering that the existing unwinding gun carriages mostly unwind the pipe by manually pulling one end of the liner pipe, thereby driving the unwinding frame wrapped with the liner pipe to rotate, but this method is time-consuming and labor-intensive, increases the workload, and is not convenient for controlling the pipe unwinding speed; therefore, in this application, by adjusting the design of the drive and drive roller group 52, the unwinding frame 1 is driven to rotate, thereby automatically unwinding the pipe.

[0032] Specifically, the arm support frame 4 is also rotatably connected to a driving roller arm 51 and an adjusting drive, and the other end of the driving roller arm 51 is connected to a driving roller group 52;

[0033] The driving roller group 52 includes two groups of driving rollers arranged in parallel in the axial direction. The driving rollers can abut against the unwinding frame 1 in the axial direction. The liner tube on the unwinding frame 1 can be inserted between the two groups of driving rollers. At least one group of driving rollers in the driving roller group 52 is connected to a rotary drive. When the driving roller group 52 is driven by the rotary drive, it drives the unwinding frame 1 abutting therewith to rotate and causes the liner tube to be continuously pushed out from between the two groups of driving rollers, thereby realizing the retraction and release of the liner tube.

[0034] In this embodiment, the rotation drive can adopt a reduction motor 56. The driving roller in the driving roller group 52 is axially connected to the roller group support frame 53 and one end of it is fixedly provided with a transmission tooth 54. The reduction motor 56 is installed on the roller group support frame 53, and its output end is fixedly provided with a driving tooth 55. The driving tooth 55 is meshed with the transmission tooth 54, and the driving roller is driven to rotate axially through the reduction motor 56.

[0035] Specifically, the roller group support frame 53 of the driving roller group 52 is connected to the driving roller support arm 51, and the adjustment drive is used to drive the driving roller support arm 51 to rotate along the radial direction of the unwinding frame 1, so as to adjust the distance between the driving roller group 52 and the unwinding frame 1 (that is, to adjust the degree of contact between the driving roller group 52 and the unwinding frame 1), thereby adjusting the rotation speed and rotation state of the unwinding frame 1, and also preventing the unwinding frame 1 from rotating due to external force and preventing the inner liner tube in the unwinding frame 1 from expanding outward;

[0036] In this embodiment, the adjustment drive can adopt a driving cylinder II61, the driving roller arm 51 is rotatably connected to the arm support frame 4, the mounting seat and the output end of the driving cylinder II61 are rotatably connected to the arm support frame 4 and the driving roller arm 51 respectively, and the driving roller arm 51 is driven to rotate along the arm support frame 4 through the extension and retraction of the driving cylinder II61, thereby adjusting the distance between the driving roller group 52 and the unwinding frame 1.

[0037] The working principle and working process of this utility model are as follows:

[0038] Before unwinding the tube, the driving cylinder I21 is activated and extended to push the support arm 2 connected to the unwinding frame 1 to flip along the platform 3 until the unwinding frame 1 flips to the outside of the unwinding trolley, that is, it is located below the plane of the platform 3 of the unwinding trolley. This lowers the center of gravity of the unwinding frame 1 and also provides a wider auxiliary operation space for workers.

[0039] The driving roller arm 51 is driven to rotate along the arm support frame 4 by the extension and contraction of the driving cylinder II61, thereby adjusting the distance between the driving roller group 52 and the unwinding frame 1, that is, adjusting the degree of contact between the driving roller group 52 and the unwinding frame 1, and thus adjusting the rotation speed and rotation state of the unwinding frame 1;

[0040] When releasing the tube, the driving roller group 52 is driven by the reduction motor 56, which not only drives the unwinding frame 1 abutting against it to rotate, but also makes the inner liner tube continuously pushed out from between the two groups of driving rollers, thereby realizing the retraction and release of the inner liner tube.

[0041] The above embodiments of the present invention are described in detail. However, the above contents are only preferred embodiments of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of this patent.

Claims

1. A factory prefabricated foldable HDPE lined pipe special reversible unwinding gun carriage, characterized by: The unwinding frame (1) is rotatably connected to the carrier (3) of the unwinding gun carriage through the support arm (2) and is overlapped with the carrier (3) through the support arm support frame (4); the output end of the flip drive is connected to the support arm (2), which can drive the unwinding frame (1) to flip in a direction away from the carrier (3), so that the unwinding frame (1) moves below the plane where the carrier (3) is located.

2. The reversible unwinding trolley for factory-prefabricated foldable HDPE lined pipe according to claim 1 is characterized in that: A compensation base (31) is also constructed on the platform (3) of the unwinding gun carriage; the support arm support frame (4) is an N-shaped structure, with its two ends respectively connected to the two groups of support arms (2), and its bottom end overlapped on the compensation base (31).

3. The reversible unwinding trolley for factory-prefabricated foldable HDPE lined pipe according to claim 2, characterized in that: The flip drive is a drive cylinder I (21), the mounting seat of the drive cylinder I (21) is rotatably connected to the carrier (3), and the output end of the drive cylinder I (21) is rotatably connected to the support arm (2).

4. The reversible unwinding trolley for factory-prefabricated foldable HDPE lined pipe according to claim 3 is characterized in that: The rotating shaft of the unwinding frame (1) is connected to the supporting arm (2) via a bearing (7).

5. The reversible unwinding trolley for factory-prefabricated foldable HDPE lined pipe according to claim 4, characterized in that: The arm support frame (4) is also rotatably connected to a driving roller arm (51) and an adjusting drive, and the other end of the driving roller arm (51) is connected to a driving roller group (52); The regulating drive is used to drive the driving roller support arm (51) to move along the radial direction of the unwinding frame (1) to adjust the distance between the driving roller group (52) and the unwinding frame (1).

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