Composite bent pipe penetrating machine

Abstract

The utility model relates to a composite bent pipe penetrating machine, and belongs to the field of composite pipe preparation equipment. The device comprises an inner pipe placing device, an outer pipe fixing device and a dragging device; the inner pipe placing device comprises an inner pipe placing plate, a placing plate gasket and a limiting assembly, the dragging device comprises dragging power, a dragging chain, a direction adjuster and an inner pipe clamping piece, the dragging power is connected with one end of the dragging chain, and the other end of the dragging chain is connected with the inner pipe clamping piece after passing through the direction adjuster. According to the pipe penetrating device, only two or three persons are needed to operate dragging power and a crane, heavy physical labor of workers is not needed, the pipe penetrating efficiency is high, and the pipe penetrating device is safer. The dragging force in the pipe penetrating process is analyzed and better utilized, so that the offset dragging force is smaller, the damage rate is low, and the pipe penetrating device is more economical.

Description

Technical Field

[0001] The utility model relates to a compound elbow pipe threading machine, belonging to the field of compound pipe preparation equipment. Background Art

[0002] At present, the threading of compound elbows cannot be fully electrified, and a lot of manual or semi-manual knocking is used for pipe threading. Because elbows are different from straight pipes, whether the pipe is threaded by dragging or pushing, it is difficult to make the inner pipe have a uniform force during the pipe threading process, resulting in damage to the inner pipe during the pipe threading process. And when the force is uneven, the head end of the inner pipe is easy to get stuck in the outer pipe, which is difficult for workers to handle and the waste rate is extremely high; even when manual pipe threading is used, knocking will also cause damage to the inner pipe. Therefore, it meets the industry demand to develop a compound elbow pipe threading machine with high efficiency and low damage rate. Summary of the Invention

[0003] According to the problems described in the background, the problems to be solved by the utility model are:

[0004] The current pipe threading method has low efficiency and high damage rate, and cannot meet the industry demand.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A compound elbow pipe threading machine includes an inner pipe placing device, an outer pipe fixing device and a dragging device; the inner pipe placing device includes an inner pipe placing plate, a placing plate gasket and a limiting component, the outer pipe fixing device includes an outer pipe fixing plate, an outer pipe baffle and a limiting component, one end of the inner pipe placing plate is connected to the outer pipe fixing plate, the limiting component is arranged along the edges on both sides of the inner pipe placing plate and the outer pipe fixing plate, the placing plate gasket passes through the limiting component and is placed on the inner pipe placing plate, and an outer pipe baffle is arranged at the other end of the outer pipe fixing plate; the dragging device includes a dragging power, a dragging chain, a direction regulator and an inner pipe clamping member, the dragging power is connected to one end of the dragging chain, and the other end of the dragging chain is connected to the inner pipe clamping member after passing through the direction regulator.

[0007] Preferably, the limiting component includes a limiting vertical rod and a limiting horizontal rod; the limiting vertical rods are respectively arranged on the edges on both sides of the inner pipe placing plate and the outer pipe placing plate, and the limiting horizontal rods are respectively connected to the adjacent limiting vertical rods on both sides. Through the combination of the limiting horizontal rod and the vertical rod, the fixation of the outer pipe is ensured. At the same time, when limiting the inner pipe, the limiting horizontal rod needs to be slightly higher than the inner pipe, so that the friction of the inner pipe will not be increased, and there is a slight height change up and down when the inner pipe is threaded.

[0008] Preferably, the inner pipe clip includes an inner pipe support pipe and a clamping plate. One end of the inner pipe support pipe is connected to the clamping plate, and the other end is connected to the dragging chain. The outer diameter of the inner pipe support pipe is less than or equal to the inner diameter of the inner pipe. In ordinary dragging, it is directly connected to the clamping plate. During the dragging process, the dragging chain clings to the inner wall of the elbow pipe, and the force deviation is large. A large amount of dragging force is not only wasted but also becomes one of the main reasons for jamming between the inner pipe and the outer pipe. Therefore, the inner pipe support pipe designed in the present invention is slightly smaller than the inner pipe in size, so that the connection point between the dragging chain and the inner pipe clip changes from the rear end of the inner pipe to the center of the front end of the inner pipe, with a small force deviation. During the dragging process, the inner pipe support pipe can disperse the deviated dragging force and prevent it from being too concentrated at the front end of the inner pipe, resulting in jamming with the outer pipe.

[0009] Preferably, the direction regulator includes a fixed transmission wheel, a movable transmission wheel, and a movable wheel track. The movable wheel track is provided on the side of the outer pipe baffle away from the outer pipe fixing plate. The movable transmission wheel is arranged on the movable wheel track. The dragging chain first passes through the fixed transmission wheel and then passes through the movable transmission wheel to connect to the inner pipe clip. In order to keep the angle between the dragging direction of the dragging chain and the moving direction of the inner pipe to be the smallest, this device is thus provided. Through force analysis, when the inner pipe is dragged from the start to half of the dragging progress, the included angle is the smallest when the dragging chain is connected to the inner pipe clip near the intersection point of the arc corresponding to the maximum bending radius and the circle of the outer diameter of the outer pipe end. When the movable transmission wheel is at one end of the movable wheel track, the dragging chain can reach this position. After the dragging progress exceeds half, the chain gradually moves from the above intersection point towards the center of the circle of the outer diameter of the elbow pipe end. However, since this device is a large-force dragging device, the movable transmission wheel bears a large supporting force while moving, which requires a huge power source, not meeting the energy-saving needs of enterprises. Therefore, the movable transmission wheel is fixed at the other end of the movable wheel track in the second half. At this time, the dragging chain is connected to the inner pipe support plate through the center of the circle of the outer diameter of the elbow pipe end.

[0010] Preferably, a bearing roller is sleeved on the limiting vertical rod fixed on the inner pipe placement plate, and the placement plate gasket passes through the limiting vertical rod and is placed on the inner pipe placement plate. This reduces the friction between the inner pipe and the limiting vertical rod during the movement of the inner pipe, and at the same time, it can also reduce the influence of the deviated dragging force on the lateral deviation of the inner pipe. The thickness of the placement plate gasket is determined according to the wall thickness of the inner and outer pipes, so that the outer wall of the inner pipe coincides with the inner wall of the outer pipe, facilitating pipe threading and also facilitating the transformation of the pipe threading machine for use with other specifications of composite pipes. Only by replacing gaskets with different thicknesses can the height problem between the inner and outer pipes be solved.

[0011] Working principle: Check the status of the composite elbow pipe threading machine. Remove all the limit crossbars fixed on the limit vertical rods. First, place the placement plate gasket on the inner pipe placement plate through a crane, and then place the outer pipe and the inner pipe on the outer pipe fixing plate and the inner pipe placement plate respectively. At this time, a certain distance should be reserved between the inner pipe and the outer pipe. Put the inner pipe clamp into the inner pipe, and drag the chain through the outer pipe and then connect it to the inner pipe clamp. Determine the position of the movable drive wheel as the position required for the first half of the drag. Start the drag power and slowly drag. When the inner pipe contacts the outer pipe, temporarily stop the drag power and check whether the outer wall of the inner pipe coincides with the inner wall of the outer pipe. After confirmation, start the drag power again. When half of the drag is completed, pause the drag power, fix the movable drive wheel to the other end of the track, and then start the drag power to complete the entire process of threading the composite pipe.

[0012] The beneficial effects of the present utility model are:

[0013] The present utility model only requires two or three people to operate the drag power and the crane, and the workers do not need heavy physical labor. The pipe threading efficiency is high and it is safer. The drag force during the pipe threading process is analyzed and better utilized, so that the offset drag force is less, the damage rate is low, and it is more economical. Description of the drawings

[0014] Figure 1 is the structural schematic diagram of the present utility model Figure 1

[0015] Figure 2 is the structural schematic diagram of the present utility model Figure 2

[0016] Figure 3 is the cross-sectional view of the outer pipe baffle

[0017] Figure 4 is the cross-sectional view of the clamping plate

[0018] Figure 5 is the cross-sectional view of the middle section of the inner pipe placement device

[0019] Figure 6 is the cross-sectional view of the middle section of the outer pipe fixing device

[0020] Figure 7 is the schematic diagram of the placement plate gasket

[0021] In the figure: 1 is the inner pipe placement plate; 2 is the outer pipe fixing plate; 3 is the limit component; 31 is the limit vertical rod; 32 is the limit crossbar; 33 is the bearing roller; 4 is the placement plate gasket; 5 is the outer pipe baffle; 6 is the drag power; 7 is the drag chain; 8 is the direction regulator; 81 is the fixed drive wheel; 82 is the movable drive wheel; 83 is the movable wheel track; 9 is the inner pipe clamp; 91 is the inner pipe support pipe; 92 is the clamping plate; 10 is the inner pipe; 11 is the outer pipe. Specific implementation mode

[0022] Embodiment 1

[0023] A composite pipe threading machine for bent pipes includes an inner pipe placement device, an outer pipe fixing device, and a dragging device; the inner pipe placement device includes an inner pipe placement plate 1, a placement plate gasket 4, and a limiting component 3, the outer pipe fixing device includes an outer pipe fixing plate 2, an outer pipe baffle 5, and a limiting component 3, one end of the inner pipe placement plate 1 is connected to the outer pipe fixing plate 2, the limiting component 3 is arranged along the edges on both sides of the inner pipe placement plate 1 and the outer pipe fixing plate 2, the placement plate gasket 4 is placed on the inner pipe placement plate 1 through the limiting component 3, and an outer pipe baffle 5 is arranged at the other end of the outer pipe fixing plate 2; the dragging device includes a dragging power source 6, a dragging chain 7, a direction regulator 8, and an inner pipe clamping member 9, the dragging power source 6 is connected to one end of the dragging chain 7, and after the other end of the dragging chain 7 passes through the direction regulator 8, it is connected to the inner pipe clamping member 9.

[0024] The limiting component 3 includes limiting vertical rods 31 and limiting horizontal rods 32; the limiting vertical rods 31 are respectively arranged on the edges on both sides of the inner pipe placement plate 1 and the outer appearance placement plate 2, and the limiting horizontal rods 32 are respectively connected to the adjacent limiting vertical rods 31 on both sides.

[0025] The inner pipe clamping member 9 includes an inner pipe support pipe 91 and a clamping plate 92, one end of the inner pipe support pipe 91 is connected to the clamping plate 92, the other end is connected to the dragging chain 7, and the outer diameter of the inner pipe support pipe 91 is less than or equal to the inner diameter of the inner pipe 10.

[0026] The direction regulator 8 includes a fixed transmission wheel 81, a movable transmission wheel 82, and a movable wheel track 83, wherein the movable wheel track 83 is arranged on the side of the outer pipe baffle 5 away from the outer pipe fixing plate 2, the movable transmission wheel 82 is arranged on the movable wheel track 83, and the dragging chain 7 first passes through the fixed transmission wheel 81 and then passes through the movable transmission wheel 82 to be connected to the inner pipe clamping member 9.

[0027] Bearing rollers 33 are sleeved on the limiting vertical rods 31 fixed on the inner pipe placement plate 1, and the placement plate gasket 4 is placed on the inner pipe placement plate 1 through the limiting vertical rods 31.

[0028] The present invention only requires two or three people to operate the dragging power source 6 and the overhead crane, and workers do not need heavy physical labor. The pipe threading efficiency is high and it is safer. The dragging force during the pipe threading process is analyzed and better utilized, so that the offset dragging force is less, the damage rate is low, and it is more economical.

Claims

1. A composite pipe bending and threading machine, characterized in that: The invention comprises an inner tube placement device, an outer tube fixing device and a dragging device; the inner tube placement device comprises an inner tube placement plate (1), a placement plate gasket (4) and a limit assembly (3); the outer tube fixing device comprises an outer tube fixing plate (2), an outer tube baffle (5) and a limit assembly (3); one end of the inner tube placement plate (1) is connected to the outer tube fixing plate (2); the limit assembly (3) is arranged along the edges of both sides of the inner tube placement plate (1) and the outer tube fixing plate (2); the placement plate gasket (4) passes through the limit assembly (3) and is placed on the inner tube placement plate (1); the outer tube baffle (5) is arranged at the other end of the outer tube fixing plate (2); the dragging device comprises a dragging power (6), a dragging chain (7), a direction regulator (8) and an inner tube clamp (9); the dragging power (6) is connected to one end of the dragging chain (7); the other end of the dragging chain (7) is connected to the inner tube clamp (9) after passing through the direction regulator (8).

2. A composite pipe bending and threading machine according to claim 1, characterized in that: The limiting assembly (3) comprises a limiting vertical rod (31) and a limiting cross rod (32); the limiting vertical rod (31) is respectively arranged on the edges of both sides of the inner tube placement plate (1) and the outer tube fixing plate (2), and the limiting cross rod (32) is respectively connected to the adjacent limiting vertical rods (31) on both sides.

3. A composite pipe bending and threading machine according to claim 1, characterized in that: The inner tube clamp (9) comprises an inner tube support tube (91) and a clamping plate (92); one end of the inner tube support tube (91) is connected to the clamping plate (92) and the other end is connected to the drag chain (7); the outer diameter of the inner tube support tube (91) is less than or equal to the inner diameter of the inner tube (10).

4. A composite pipe bending and threading machine according to claim 1, characterized in that: The direction regulator (8) comprises a fixed transmission wheel (81), a movable transmission wheel (82) and a movable wheel track (83), wherein the movable wheel track (83) is arranged on a side of the outer tube baffle (5) away from the outer tube fixed plate (2), and the movable transmission wheel (82) is arranged on the movable wheel track (83), and the drag chain (7) first passes through the fixed transmission wheel (81) and then passes through the movable transmission wheel (82) to connect with the inner tube clamp (9).

5. A composite pipe bending and threading machine according to claim 1, characterized in that: A bearing roller (33) is sleeved on a limiting vertical rod (31) fixed on the inner tube placement plate (1), and a placement plate gasket (4) passes through the limiting vertical rod (31) and is placed on the inner tube placement plate (1).

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