Stretch forming device for branch pipe of large-diameter three-way pipe

Abstract

The utility model discloses a large-caliber three-way pipe branch pipe stretch forming device which comprises a bearing base, a power mechanism and a pipe fitting body, an arc-shaped supporting groove is formed in the upper portion of the bearing base, an open groove is formed in the bottom end of the bearing base, the power mechanism comprises a machine frame, a hydraulic cylinder is fixedly arranged at the top of the machine frame, and the hydraulic cylinder is connected with the open groove. One end of a push rod of the hydraulic cylinder is fixedly connected with a pressing rod, a stretching ball is fixedly arranged on the pressing rod, and the pipe fitting body is located in the arc-shaped supporting groove and arranged outside the pressing rod and the stretching ball in a sleeving mode. The pressing rod and the stretching ball are fixedly arranged together and synchronously move in and out under the driving of the hydraulic cylinder and the electric cylinder, the stretching ball does not need to be assembled and disassembled for multiple times during stretching, the stretching forming efficiency is improved, and the pressing rod and the stretching ball are in threaded connection and are convenient to replace; after stretching forming, the pressing rod and the stretching ball are driven by the electric cylinder to move out of the pipe fitting body, at the moment, the three-way pipe structure is not shielded and is taken down, and discharging is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of tee pipe stretching forming, in particular to a large-diameter tee pipe branch stretching forming device. Background Technique

[0002] Tee pipe fittings are mainly components used to change the direction of fluid. They are used at the branch of the main pipeline and can be classified according to the pipe diameter. Generally, they are made of carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argolite, etc. Large-diameter tee pipe fittings are key pipe components used for branch connection of the main line to the branch line in high-pressure oil and gas transmission pipelines and power generation pipelines.

[0003] The existing branch stretching forming methods are mostly spherical stretching. The existing spherical structures are independently arranged. When using a sphere for stretching, it is necessary to install the sphere first and then disassemble the sphere after stretching. Continuously installing and disassembling the sphere reduces the efficiency of branch stretching forming, and it is inconvenient to unload the pipe fittings after stretching forming. Content of the Utility Model

[0004] The purpose of the utility model is to provide a large-diameter tee pipe branch stretching forming device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A large-diameter tee pipe branch stretching forming device, including a supporting base, a power mechanism, a pipe fitting main body, and a displacement mechanism. An arc-shaped supporting groove is opened at the upper part of the supporting base, and a slot is opened at the bottom end of the supporting base. The power mechanism includes a frame, a hydraulic cylinder is fixedly arranged at the top of the frame, one end of the push rod of the hydraulic cylinder is fixedly connected to a pressure rod, and a stretching ball is fixedly arranged on the pressure rod. The pipe fitting main body is located in the arc-shaped supporting groove, and the displacement mechanism includes a base plate and an electric cylinder.

[0006] Wherein, a through hole is opened on the side surface of the pipe fitting main body.

[0007] Wherein, a stud is welded and fixed on the pressure rod.

[0008] Wherein, a threaded groove is opened at the top of the stretching ball.

[0009] Wherein, the stud of the pressure rod is screwed into the threaded groove of the stretching ball, and the pressure rod and the stretching ball are fixedly connected by threads.

[0010] Wherein, the power mechanism includes a hydraulic driving component, and the hydraulic driving component is fixedly arranged on the side surface of the frame.

[0011] Wherein, the hydraulic driving component includes a hydraulic oil tank, a pump body, a valve, and an oil pipeline component.

[0012] Among them, the through hole of the pipe fitting body is aligned with the stretching ball and the slotted opening.

[0013] Among them, a chute is opened on the substrate, a sliding seat is fixedly welded to the bottom of the frame, and the sliding seat is slidably connected with the chute. One end of the push rod of the electric cylinder is fixed to the sliding seat.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. The pressure rod and the stretching ball of the present utility model are fixedly arranged together and are synchronously moved in and out under the drive of the hydraulic cylinder and the electric cylinder. When stretching, it is not necessary to install and disassemble the stretching ball multiple times, which improves the stretching forming efficiency. Moreover, the pressure rod and the stretching ball are threadedly connected, which is convenient for replacement.

[0016] 2. After the branch pipe is stretched and formed in the present utility model, the pressure rod and the stretching ball are moved out of the pipe fitting body under the drive of the electric cylinder. At this time, the three-way pipe structure has no obstruction, and it can be taken off, which is convenient for unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a working schematic diagram of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the top view of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the bottom view of the present utility model;

[0020] Figure 4 is a schematic structural diagram of the power mechanism of the present utility model;

[0021] Figure 5 is a connection relationship diagram of the pressure rod and the stretching ball of the present utility model;

[0022] Figure 6 is a schematic structural diagram of the pipe fitting body of the present utility model.

[0023] In the figure: 1, supporting base; 2, power mechanism; 3, pipe fitting body; 4, displacement mechanism; 11, arc-shaped trough; 12, slotted opening; 21, frame; 22, hydraulic cylinder; 23, pressure rod; 24, stretching ball; 25, hydraulic drive assembly; 26, sliding seat; 231, stud; 241, thread groove; 31, through hole; 41, substrate; 42, electric cylinder; 43, chute. DETAILED DESCRIPTION OF THE EMBODIMENTS

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

[0025] See also Figure 1-6 The utility model provides a technical solution: a large-diameter three-way pipe branch stretching forming device, including a supporting base 1, a power mechanism 2, a pipe body 3 and a displacement mechanism 4, an arc-shaped bracket 11 is opened on the upper part of the supporting base 1, and a slot 12 is opened at the bottom end of the supporting base 1, the power mechanism 2 includes a frame 21, a hydraulic cylinder 22 is fixedly arranged on the top of the frame 21, one end of the push rod of the hydraulic cylinder 22 is fixedly connected to a pressure rod 23, and a stretching ball 24 is fixedly arranged on the pressure rod 23, the pipe body 3 is located in the arc-shaped bracket 11, and the displacement mechanism 4 includes a base plate 41 and an electric cylinder 42.

[0026] The supporting base 1 is used to support the pipe body 3 to be stretched, the power mechanism 2 is used to provide hydraulic power for stretching, a through hole 31 is pre-opened on the pipe body 3, and the displacement mechanism 4 is used to drive the overall power mechanism 2.

[0027] The pipe body 3 to be stretched and formed is placed in the arc bracket 11, and the displacement mechanism 4 drives the power mechanism 2 to move horizontally and move into the working area, so that the pipe body 3 is sleeved on the outside of the pressure rod 23 and the stretching ball 24, and the through hole 31 on the side of the pipe body 3 is aligned with the slot 12 at the bottom of the supporting base 1, and the through hole 31 on the side of the pipe body 3 is aligned with the lowest point of the stretching ball 24. During the stretching and forming, the hydraulic cylinder 22 drives the pressure rod 23 through its push rod, and drives the stretching ball 24 through the pressure rod 23. The stretching ball 24 moves downward under the drive of the hydraulic cylinder 22 and contacts with the pipe body 3. In the process of the stretching ball 24 continuously moving downward, the three-way structure is stretched out with the through hole 31 as the base point, so as to realize the branch pipe stretching and forming of the pipe body 3;

[0028] After stretching, the hydraulic cylinder 22 drives the pressure rod 23 and the stretching ball 24 to move up and reset, and the electric cylinder 42 drives the overall power mechanism 2 to reset, and the pressure rod 23 and the stretching ball 24 are moved out from the inside of the pipe body 3. At this time, the three-way pipe structure after stretching is not blocked and can be removed.

[0029] The pressure rod 23 and the stretching ball 24 are fixed together and are synchronously moved in and out under the drive of the hydraulic cylinder 22 and the electric cylinder 42. When stretching, there is no need to install and disassemble the stretching ball 24 multiple times, thereby improving the stretching forming efficiency.

[0030] Among them, a through hole 31 is formed on the side surface of the pipe fitting body 3, and the position of the through hole 31 is the position where the branch pipe of the pipe fitting body 3 is drawn and formed.

[0031] Among them, a stud 231 is welded and fixed on the pressure rod 23.

[0032] Among them, a threaded groove 241 is formed at the top of the drawing ball 24.

[0033] Among them, the stud 231 of the pressure rod 23 is screwed into the threaded groove 241 of the drawing ball 24, and the pressure rod 23 and the drawing ball 24 are fixedly connected by threads. The connection between the pressure rod 23 and the drawing ball 24 is a detachable connection, and the drawing ball 24 can be replaced separately according to the drawing and forming requirements. Moreover, the connection method between the pressure rod 23 and the drawing ball 24 is simple and convenient to replace.

[0034] Among them, the power mechanism 2 includes a hydraulic drive assembly 25, and the hydraulic drive assembly 25 is fixedly arranged on the side surface of the frame 21.

[0035] Among them, the hydraulic drive assembly 25 includes a hydraulic oil tank, a pump body, a valve and an oil pipeline assembly. The hydraulic cylinder 22 is a hydraulic actuator, and the hydraulic cylinder 22 is controlled by the hydraulic drive assembly 25.

[0036] Among them, the through hole 31 of the pipe fitting body 3 is aligned with the drawing ball 24 and the slot 12. The drawing ball 24 moves downward under the drive of the hydraulic cylinder 22 and contacts the pipe fitting body 3. During the continuous downward movement of the drawing ball 24, a tee structure is drawn with the through hole 31 as the base point, and the slot 12 is an avoidance structure to ensure that the tee structure can be successfully formed.

[0037] Among them, a chute 43 is formed on the base plate 41. A sliding seat 26 is welded and fixed at the bottom of the frame 21, and the sliding seat 26 is slidably connected with the chute 43. One end of the push rod of the electric cylinder 42 is fixed to the sliding seat 26. When the electric cylinder 42 works, it drives the sliding seat 26 to slide horizontally along the chute 43. The sliding seat 26 drives the components of the power mechanism 2 to slide horizontally along the chute 43 synchronously, realizing the movement in and out of the pressure rod 23 and the drawing ball 24. When performing drawing and forming, the pressure rod 23 and the drawing ball 24 move into the pipe fitting body 3 under the drive of the electric cylinder 42. After the drawing and forming is completed, the pressure rod 23 and the drawing ball 24 move out of the pipe fitting body 3 under the drive of the electric cylinder 42.

[0038] Working principle: Place the pipe fitting body 3 to be stretch-formed in the arc-shaped support groove 11. Align the through hole 31 on the side of the pipe fitting body 3 with the slot 12 at the bottom of the support base 1. When the electric cylinder 42 works, it drives the pressure rod 23 and the stretching ball 24 to move into the pipe fitting body 3, and aligns the through hole 31 on the side of the pipe fitting body 3 with the lowest point of the stretching ball 24. During stretch-forming, the hydraulic cylinder 22 works to drive the pressure rod 23 through its push rod, and drives the stretching ball 24 through the pressure rod 23. The stretching ball 24 moves downward under the drive of the hydraulic cylinder 22 and contacts the pipe fitting body 3. During the continuous downward movement of the stretching ball 24, with the through hole 31 as the base point, a branch pipe structure is stretched out to form a tee joint, realizing the branch pipe stretch-forming of the pipe fitting body 3. After stretch-forming, the hydraulic cylinder 22 drives the pressure rod 23 and the stretching ball 24 to move upward and reset, and the electric cylinder 42 drives the overall power mechanism 2 to reset, moving the pressure rod 23 and the stretching ball 24 out of the inside of the pipe fitting body 3. At this time, the stretch-formed tee pipe structure has no obstruction, and it can be taken off directly.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Large-diameter three-way pipe branch stretching forming device, comprising a supporting base (1), a power mechanism (2), a pipe fitting main body (3) and a displacement mechanism (4), characterized in that: An arc-shaped supporting groove (11) is formed in the upper part of the supporting base (1), and a slotted opening (12) is formed at the bottom end of the supporting base (1). The power mechanism (2) includes a frame (21), and a hydraulic cylinder (22) is fixedly arranged at the top of the frame (21). One end of the push rod of the hydraulic cylinder (22) is fixedly connected to a pressure rod (23), and a stretching ball (24) is fixedly arranged on the pressure rod (23). The pipe fitting main body (3) is located in the arc-shaped supporting groove (11). The displacement mechanism (4) includes a base plate (41) and an electric cylinder (42).

2. The large-diameter tee branch pipe stretching and forming device according to claim 1, characterized in that: A through hole (31) is formed in the side surface of the pipe fitting main body (3).

3. The large-diameter tee branch pipe stretching and forming device according to claim 1, characterized in that: A stud (231) is fixedly welded on the pressure rod (23).

4. The large-diameter three-way pipe branch stretching forming device according to claim 3, characterized in that: A threaded groove (241) is formed at the top of the stretching ball (24).

5. The large-diameter tee branch pipe stretching forming device according to claim 4, wherein: The stud (231) of the pressure rod (23) is screwed into the threaded groove (241) of the stretching ball (24), and the pressure rod (23) is fixedly connected to the stretching ball (24) by threading.

6. The large-diameter tee branch pipe stretching forming device according to claim 1, characterized in that: The power mechanism (2) includes a hydraulic driving assembly (25), and the hydraulic driving assembly (25) is fixedly arranged on the side surface of the frame (21).

7. The large-diameter three-way pipe branch stretching forming device according to claim 6, characterized in that: The hydraulic driving assembly (25) includes a hydraulic oil tank, a pump body, a valve and a pipeline assembly for oil transmission.

8. The large-diameter three-way pipe branch stretching forming device according to claim 2, wherein: The through hole (31) of the pipe fitting main body (3) is aligned with the stretching ball (24) and the slotted opening (12).

9. The large-diameter tee branch pipe stretching and forming device according to claim 1, characterized in that: A sliding groove (43) is formed in the base plate (41), a sliding seat (26) is fixedly welded at the bottom of the frame (21), and the sliding seat (26) is slidably connected to the sliding groove (43). One end of the push rod of the electric cylinder (42) is fixed to the sliding seat (26).

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