A type of large-diameter PE pipe laying roller frame

Abstract

This utility model discloses a large-diameter PE pipe laying idler frame, including a fixed frame with idlers arranged in a V-shape symmetrically mounted on the fixed frame. A fixed plate is fixed to the center of the square tube corresponding to the front and back sides of the fixed frame. Both sides of the fixed plate are movably connected to hinge seats via tension springs. The hinge seats are movably hinged to support rods and connecting rods via two vertical hinge shafts. The surfaces of the support rods and connecting rods located inside the hinge seats have interlocking toothed grooves, and the surface of the connecting rod facing away from the hinge seats has a vertical insertion hole. By setting multiple sets of idlers to support the large-diameter PE pipe, and by lengthening the fixed frame and setting support rods at both ends of the fixed frame that can extend outwards to increase the ground support projection size, the stability of the fixed frame on the ground is greatly improved. When pulling the large-diameter PE pipe, the improved stability of the fixed frame makes it less prone to tipping over, thus facilitating the laying and movement of the large-diameter PE pipe.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe laying tools, specifically a large-diameter PE pipe laying roller frame. Background Technology

[0002] Large-diameter PE pipes are pipes made of high-density polyethylene (HDPE) with an outer diameter greater than 500mm. They are widely used in municipal water supply and drainage, water conservancy projects, industrial pipeline systems, mineral sand and slurry transportation, power and communication sheathing, farmland irrigation, geothermal air conditioning, and other fields. Due to their large diameter, thick walls, and long length, large-diameter PE pipes are also quite heavy. During installation, they require hoisting for handling, which is inconvenient. In addition, the laying conditions are complex, making it difficult to accurately position them in one go. Frequent adjustments to the distance are necessary, and the heavy pipes cannot be kept suspended throughout the installation process or dragged on the ground. Therefore, the use of roller supports is essential.

[0003] The existing roller frame has only one set of two rollers, which has a narrow ground support area. When supporting large-diameter PE pipes, the supported position provides support force, while the unsupported positions in front and behind will bend and deform downwards due to gravity. At this time, pulling the roller frame directly along the direction of the large-diameter PE pipe is easy to tip over due to resistance, so it needs to be improved. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a large-diameter PE pipe laying idler frame, which solves the problem that the existing idler frame is prone to tipping over due to resistance when pulled along the direction of the large-diameter PE pipe because of its narrow ground support projection area.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A large-diameter PE pipe laying roller frame includes a fixed frame, on which rollers are symmetrically installed in a V-shape. A fixed plate is fixed in the center of the square tube corresponding to the front and back sides at the bottom of the fixed frame. A hinge seat is movably connected to both sides of the fixed plate by a tension spring. The hinge seat is movably hinged to a support rod and a connecting rod by two vertical hinge shafts.

[0007] The support rod and the connecting rod have meshing toothed grooves on one end surface inside the hinge seat. The connecting rod has a vertical insertion hole on the end surface away from the hinge seat. The fixing frame has positioning slots on both sides. The connecting rod can rotate around the hinge axis and be engaged in the positioning slot, and is vertically and movably locked by the positioning pin above the positioning slot.

[0008] Preferably, the fixing frame is a bracket welded from multiple square tubes, and multiple sets of V-shaped idler rollers are arranged longitudinally on the fixing frame.

[0009] Preferably, the dimensions of the hinge seat are adapted to the inner diameter of the square tube.

[0010] Preferably, the length of the connecting rod is less than the length of the support rod, and the end of the support rod is fixed with a support block of the same size as the outer diameter of the square tube.

[0011] Preferably, finger grooves are provided on both the upper and lower surfaces of the support block.

[0012] Preferably, the positioning pin is a U-shaped pin, which is simultaneously inserted into the insertion holes on the two connecting rods in the positioning slot.

[0013] Preferably, the fixing frame is provided with an anti-loss chain connected to the positioning pin.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention improves the stability of the fixed frame on the ground by setting up multiple sets of rollers to support large-diameter PE pipes, lengthening the fixed frame, and setting support rods at both ends of the fixed frame that can extend outward to increase the ground support projection size. When pulling large-diameter PE pipes, the improved stability of the fixed frame makes it less likely to tip over, thus facilitating the laying and moving of large-diameter PE pipes. It also solves the problem that the existing roller frame is prone to tipping over due to resistance when pulling along the direction of large-diameter PE pipes because the ground support projection area is narrow. Attached Figure Description

[0016] Figure 1 This is a rendering of the present utility model;

[0017] Figure 2 This is a front view of the present utility model;

[0018] Figure 3 This is a top view of the present invention;

[0019] Figure 4 This is a top cross-sectional view showing the folded storage effect of the support rod and connecting rod of this utility model.

[0020] In the diagram: 1. Fixed frame; 101. Square tube; 2. Idler roller; 3. Fixed plate; 4. Tension spring; 5. Hinge seat; 501. Hinge shaft; 6. Support rod; 7. Connecting rod; 701. Insertion hole; 8. Tooth groove; 9. Positioning slot; 10. Positioning pin; 11. Support block; 1101. Finger groove; 12. Anti-loss chain. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-4 As shown, this utility model provides a technical solution: a large-diameter PE pipe laying idler frame, including a fixed frame 1, and idler rollers 2 arranged in a V-shape symmetrically installed on the fixed frame 1. The fixed frame 1 is a support made of multiple square tubes 101 welded together. Multiple sets of V-shaped idler rollers 2 are arranged longitudinally on the fixed frame 1 to increase the support force points of the PE pipe and improve the support effect.

[0023] A fixing plate 3 is fixed in the center of the square tube 101 at the bottom of the fixing frame 1, corresponding to the front and back sides. A hinge seat 5 is movably connected to both sides of the fixing plate 3 by a tension spring 4. The size of the hinge seat 5 is adapted to the inner diameter of the square tube 101. The hinge seat 5 is movably hinged to a support rod 6 and a connecting rod 7 by two vertical hinge shafts 501.

[0024] The support rod 6 and the connecting rod 7 are provided with meshing tooth grooves 8 on one end surface inside the hinge seat 5. The length of the connecting rod 7 is less than the length of the support rod 6. The end of the support rod 6 is fixed with a support block 11 with the same outer diameter as the square tube 101. The upper and lower surfaces of the support block 11 are provided with finger grooves 1101.

[0025] The connecting rod 7 has a vertical insertion hole 701 on the surface of the end facing away from the hinge seat 5. The fixing frame 1 has positioning slots 9 on both sides. The connecting rod 7 can rotate around the hinge shaft 501 and be inserted into the positioning slot 9 and locked vertically by the positioning pin 10 above the positioning slot 9. The positioning pin 10 is a U-shaped pin. The positioning pin 10 is inserted into the insertion hole 701 on both connecting rods 7 at the same time on the positioning slot 9. The fixing frame 1 is provided with an anti-loss chain 12 that connects to the positioning pin 10.

[0026] Working principle:

[0027] By designing an extended fixing frame 1, multiple sets of V-shaped rollers 2 are arranged along the length of the extended fixing frame 1 to support the large-diameter PE pipe, increasing the force-bearing area and reducing the bending rate. The support rod 6 is pulled outward from the square tube 101 through the finger groove 1101 of the support block 11. The support rod 6 and the connecting rod 7 are opened by rotating around the hinge axis 501. The hinge seat 5 is snapped into the end of the square tube 101. The connecting rod 7 is rotated into the positioning slot 9 and locked by the positioning pin 10, thus realizing the opening operation of the support rod 6. The support block 11 supports the ground, greatly increasing the ground support projection size, which greatly improves the stability of the fixing frame 1 on the ground. It is not easy to tip over when pulling the large-diameter PE pipe, which brings convenience to the laying and moving process of the large-diameter PE pipe.

[0028] When not using the fixing frame 1, pull out the positioning pin 10, and bring the support rod 6 and connecting rod 7 together. Under the action of the tension spring 4, the support rod 6 and connecting rod 7 can be pulled back into the square tube 101, achieving a folding effect that reduces size and makes it easy to carry.

Claims

1. A large-diameter PE pipe laying idler frame, comprising a fixing frame (1), characterized in that: The fixed frame (1) has V-shaped rollers (2) symmetrically installed on the left and right sides. The fixed frame (1) has a fixed plate (3) fixed in the center of the square tube (101) corresponding to the front and back sides at the bottom. The fixed plate (3) has a hinge seat (5) movably connected to both sides by a tension spring (4). The hinge seat (5) is movably hinged to a support rod (6) and a connecting rod (7) by two vertical hinge shafts (501). The support rod (6) and the connecting rod (7) are provided with meshing tooth grooves (8) on one end surface inside the hinge seat (5). The connecting rod (7) is provided with a vertical insertion hole (701) on one end surface away from the hinge seat (5). The fixing frame (1) is provided with positioning slots (9) on both sides. The connecting rod (7) can rotate around the hinge axis (501) and be inserted into the positioning slot (9) and locked vertically by the positioning pin (10) provided above the positioning slot (9).

2. The large-diameter PE pipe laying idler frame according to claim 1, characterized in that: The fixed frame (1) is a support made of multiple square tubes (101) welded together, and multiple sets of V-shaped rollers (2) are arranged on the fixed frame (1) along the longitudinal direction.

3. The large-diameter PE pipe laying idler frame according to claim 1, characterized in that: The dimensions of the hinge seat (5) are adapted to the inner diameter of the square tube (101).

4. A large-diameter PE pipe laying idler frame according to claim 1, characterized in that: The length of the connecting rod (7) is less than the length of the support rod (6), and the end of the support rod (6) is fixed with a support block (11) with the same outer diameter as the square tube (101).

5. A large-diameter PE pipe laying idler frame according to claim 4, characterized in that: The upper and lower surfaces of the support block (11) are provided with finger grooves (1101).

6. A large-diameter PE pipe laying idler frame according to claim 1, characterized in that: The positioning pin (10) is a U-shaped pin, and the positioning pin (10) is simultaneously inserted into the insertion hole (701) on the two connecting rods (7) on the positioning slot (9).

7. A large-diameter PE pipe laying idler frame according to claim 6, characterized in that: The fixed frame (1) is provided with an anti-loss chain (12) that connects to the positioning pin (10).

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