Bimetal composite pipe hydraulic bulging equipment

Abstract

The utility model discloses a bimetal composite pipe hydraulic bulging device which comprises a base, a sliding groove is formed in one side of the interior of the base, a movable seat is arranged in the sliding groove, the movable seat and the sliding groove are in sliding limiting, fixed seats are arranged at the center positions of the two sides of the upper end of the movable seat, and the fixed seats are arranged in the sliding groove. Second limiting rods are fixedly arranged between the fixing bases and are symmetrically arranged, moving plates are arranged on the two sides of the outer portion of each second limiting rod, the moving plates and the second limiting rods are in sliding limiting, and mounting bases are fixedly arranged at the four corners of the upper end of each moving base; and a first hydraulic telescopic device is fixedly arranged on one side of the exterior of the mounting base, the telescopic end of the first hydraulic telescopic device extends to the other side of the mounting base and is fixedly connected with the movable plate, and the problems that the distance between the clamping mechanisms is difficult to adjust and the pipe body is not flexible enough to adjust are solved through the structure.

Description

Technical Field

[0001] This utility model relates to the field of pipe bulging technology, specifically to a hydraulic bulging device for bimetallic composite pipes. Background Technology

[0002] The hydraulic bulging equipment for bimetallic composite pipes is a key piece of equipment used in the production of bimetallic composite pipes. It mainly consists of three parts: a mechanical system, a hydraulic system, and a control system. During production, the inner and outer pipes are first assembled together. Then, high-pressure liquid is injected into the inner pipe through the hydraulic system, causing plastic deformation of the inner pipe and elastic deformation of the outer pipe. As the hydraulic pressure increases, the inner pipe gradually presses tightly against the outer pipe. The hydraulic bulging equipment for bimetallic composite pipes is widely used in the petroleum, natural gas, chemical, and power industries.

[0003] For example, Chinese patent CN219378726U, entitled "A Tube Expansion Device for a Metal Tube," includes an energy conversion tube and an expansion head. One end of the energy conversion tube is connected to a cylinder. The expansion head is connected to the other end of the energy conversion tube. The expansion head includes a segmented assembly whose outer contour conforms to the inner contour of the metal tube, allowing it to extend into and adhere to the inner cavity of the metal tube. The segmented assembly includes multiple expansion segments evenly arranged along its central axis. Each expansion segment is designed to expand or close radially along the segmented assembly. The energy conversion tube is a high-pressure resistant hose used to transmit hydraulic oil.

[0004] While the existing technologies can achieve pipe bulging, in practical use, they have several drawbacks. First, it is difficult to adjust the distance between the clamping mechanisms, which are usually fixed on the base, making it difficult to hold pipes of different lengths, thus reducing the efficiency of pipe processing. Second, the pipe adjustment is not flexible enough; when bulging the pipe, manual insertion of the pipe onto the mandrel is usually required, necessitating manual assistance for each bulging operation, which increases the workload of the operators. Therefore, these technologies do not meet current needs. To address this, we propose a bimetallic composite pipe hydraulic bulging device. Utility Model Content

[0005] The purpose of this invention is to provide a hydraulic bulging device for bimetallic composite tubes to solve the problems mentioned in the background art, such as the difficulty in adjusting the distance between clamping mechanisms and the lack of flexibility in tube body adjustment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bimetallic composite tube hydraulic bulging device, comprising a base, a sliding groove provided on one side inside the base, a movable seat provided inside the sliding groove, the movable seat slidingly limiting the sliding groove, a fixed seat provided at the center position of both sides of the upper end of the movable seat, a second limiting rod fixedly provided between the fixed seats, the second limiting rods being symmetrically arranged, a movable plate provided on both sides outside the second limiting rod, the movable plate slidingly limiting the second limiting rod, a mounting seat fixedly provided at each of the four corners of the upper end of the movable seat, a first hydraulic telescopic device fixedly provided on one side outside the mounting seat, the telescopic end of the first hydraulic telescopic device extending to the other side of the mounting seat and fixedly connected to the movable plate.

[0007] Preferably, a lead screw is provided at the center of the slide groove, and both sides of the lead screw are rotatably connected to the inner wall of the slide groove. A first limiting rod is fixedly provided inside the slide groove at the front and rear ends of the lead screw. The first limiting rod and the lead screw both pass through the movable seat, and the movable seat slides and limits the first limiting rod.

[0008] Preferably, a servo motor is fixedly installed on one side of the outer side of the base, and the output shaft of the servo motor extends into the interior of the slide groove and is fixedly connected to the lead screw.

[0009] Preferably, the front and rear ends of the upper end of the movable plate are fixedly provided with a fixing frame, a second hydraulic telescopic device is fixedly provided on one side of the outside of the fixing frame, the telescopic end of the second hydraulic telescopic device extends to the other side of the fixing frame, and a clamping plate is fixedly provided at one end of the telescopic end of the second hydraulic telescopic device.

[0010] Preferably, a rubber pad is provided at one end of the clamping plate near the center of the base, and the rubber pad is fixedly connected to the clamping plate by a polymer adhesive.

[0011] Preferably, a high-pressure hydraulic pump assembly is fixedly installed on one side of the upper end of the base, and a core rod is installed on the side of the high-pressure hydraulic pump assembly near the opening of the slide groove. High-pressure resistant rubber is fixedly installed on the outside of the core rod.

[0012] Preferably, a tube is provided between the clamping plates. The tube is placed horizontally, and the position of the tube corresponds to that of the core rod. The outer wall of the tube is in contact with the rubber pad.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model can adjust the distance between the moving plates by means of the first hydraulic telescopic device and the second limiting rod. Before the tube body is expanded, the distance between the moving plates is adjusted according to the actual tube body length. At this time, the first hydraulic telescopic device is activated so that the telescopic end of the first hydraulic telescopic device extends. The extension of the telescopic end of the first hydraulic telescopic device drives the moving plates to move towards each other on the moving seat. At the same time, the moving plates slide outside the second limiting rod until the moving plates and the clamping plates are moved to the appropriate position. Then the subsequent tube body fixing operation is performed, thereby improving the adaptability of the clamping mechanism to tube bodies of different lengths.

[0015] (2) This utility model can move the tube body to the outside of the core rod by means of a servo motor and a lead screw. When the tube body is being expanded, the tube body is fixed between the clamping plates. At this time, the servo motor is turned on, so that the output shaft of the servo motor drives the lead screw to rotate. The lead screw drives the moving seat and the tube body to move together towards the core rod until the moving seat is moved to the appropriate position. At this time, the part of the tube body that needs to be expanded is sleeved on the outside of the core rod, and then the subsequent tube expansion operation is carried out, thereby improving the flexibility of tube body movement. At the same time, the servo electric drive of the moving seat can improve the accuracy of tube body movement.

[0016] (3) This utility model can clamp and fix pipes of different diameters through a fixed frame and a second hydraulic telescopic device. When fixing the pipe, the moving plate has been adjusted to a suitable position. At this time, the operator uses tools to hoist the pipe to the center position between the clamping plates, and then opens the second hydraulic telescopic device so that the telescopic end of the second hydraulic telescopic device extends. The extension of the telescopic end of the second hydraulic telescopic device drives the clamping plates to move towards each other until the clamping plates are moved to a suitable position. At this time, the rubber pad on the clamping plate contacts the outside of the pipe, completing the fixing of the pipe, thereby improving the accuracy of fixing the position of the pipe. Attached Figure Description

[0017] Figure 1 This is a perspective view of the overall structure of this utility model;

[0018] Figure 2 This is a front view of the internal structure of this utility model;

[0019] Figure 3 This is a side view of the internal structure of this utility model;

[0020] Figure 4 For the present utility model Figure 3 Enlarged view of a portion of region A in the middle.

[0021] In the diagram: 1. Base; 2. High-pressure hydraulic pump assembly; 3. Core rod; 4. High-pressure resistant rubber; 5. Slide groove; 6. Servo motor; 7. First limit rod; 8. Lead screw; 9. Moving seat; 10. Moving plate; 11. Mounting seat; 12. First hydraulic telescopic device; 13. Fixed seat; 14. Second limit rod; 15. Fixed frame; 16. Second hydraulic telescopic device; 17. Clamping plate; 18. Rubber pad; 19. Tube body. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4 This utility model provides an embodiment of a bimetallic composite tube hydraulic bulging device, including a base 1, a groove 5 is provided on one side inside the base 1, a high-pressure hydraulic pump assembly 2 is fixedly provided on one side of the upper end of the base 1, a core rod 3 is provided on the side of the high-pressure hydraulic pump assembly 2 near the opening of the groove 5, a high-pressure resistant rubber 4 is fixedly provided on the outside of the core rod 3, and a tube body 19 is provided between the clamping plates 17. The tube body 19 is placed horizontally, the position of the tube body 19 corresponds to the core rod 3, and the outer wall of the tube body 19 contacts the rubber pad 18. The high-pressure hydraulic pump assembly 2 can blow high-pressure oil into the high-pressure resistant rubber 4 through the core rod 3, so that the high-pressure resistant rubber 4 bulges.

[0024] Please see Figure 1 , Figure 2 and Figure 3 The sliding groove 5 is provided with a movable seat 9 inside, which slides and limits the sliding of the sliding groove 5. A fixed seat 13 is provided at the center of both sides of the upper end of the movable seat 9. A second limiting rod 14 is fixedly provided between the fixed seats 13. The second limiting rod 14 is symmetrically arranged. Movable plates 10 are provided on both sides of the outer side of the second limiting rod 14. The movable plates 10 slide and limit the sliding of the second limiting rod 14. Mounting seats 11 are fixedly provided at the four corners of the upper end of the movable seat 9. A first hydraulic telescopic device 12 is fixedly provided on one side of the outer side of the mounting seat 11. The telescopic end of the first hydraulic telescopic device 12 extends to the other side of the mounting seat 11 and is fixedly connected to the movable plate 10, so as to facilitate the movement of the movable plate 10 by driving the first hydraulic telescopic device 12.

[0025] Please see Figure 1 , Figure 2 and Figure 3A lead screw 8 is provided at the center of the slide groove 5. Both sides of the lead screw 8 are rotatably connected to the inner wall of the slide groove 5. A first limiting rod 7 is fixedly provided inside the slide groove 5 at the front and rear ends of the lead screw 8. The first limiting rod 7 and the lead screw 8 both pass through the movable seat 9. The movable seat 9 slides and limits the first limiting rod 7. A servo motor 6 is fixedly provided on one side of the base 1. The output shaft of the servo motor 6 extends into the interior of the slide groove 5 and is fixedly connected to the lead screw 8, so as to facilitate the movement of the movable seat 9 inside the slide groove 5 by the lead screw 8.

[0026] Please see Figure 1 , Figure 2 and Figure 4 The front and rear ends of the upper end of the movable plate 10 are fixedly provided with a fixing frame 15. A second hydraulic telescopic device 16 is fixedly provided on one side of the outside of the fixing frame 15. The telescopic end of the second hydraulic telescopic device 16 extends to the other side of the fixing frame 15. A clamping plate 17 is fixedly provided at one end of the telescopic end of the second hydraulic telescopic device 16. A rubber pad 18 is provided at one end of the clamping plate 17 near the center of the base 1. The rubber pad 18 and the clamping plate 17 are fixedly connected by a polymer adhesive, so as to facilitate the clamping and fixing of the tube body 19 by the clamping plate 17.

[0027] Working principle: In use, first adjust the distance between the moving plates 10 according to the actual length of the pipe 19. Then, activate the first hydraulic telescopic device 12, causing its telescopic end to extend. This extension of the telescopic end of the first hydraulic telescopic device 12 drives the moving plates 10 to move towards each other on the moving seat 9. Simultaneously, the moving plates 10 slide outside the second limit rod 14 until they are moved together with the clamping plates 17 to the appropriate position. At this point, the operator uses tools to hoist the pipe 19 to the center position between the clamping plates 17, and then activates the second hydraulic telescopic device. 16. This causes the telescopic end of the second hydraulic telescopic device 16 to extend. The extension of the telescopic end of the second hydraulic telescopic device 16 synchronously drives the clamping plate 17 to move towards each other until the clamping plate 17 is moved to a suitable position. At this time, the rubber pad 18 on the clamping plate 17 contacts the outside of the tube body 19. Finally, the servo motor 6 is turned on, causing the output shaft of the servo motor 6 to drive the lead screw 8 to rotate. The lead screw 8 drives the moving seat 9 and the tube body 19 to move together towards the core rod 3 until the moving seat 9 is moved to a suitable position. At this time, the part of the tube body 19 that needs to be expanded is sleeved on the outside of the core rod 3.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A bimetallic composite tube hydraulic bulging device, comprising a base (1), characterized in that: A sliding groove (5) is provided on one side of the base (1). A movable seat (9) is provided inside the sliding groove (5). The movable seat (9) slides and is limited to the sliding groove (5). A fixed seat (13) is provided at the center of both sides of the upper end of the movable seat (9). A second limiting rod (14) is fixedly provided between the fixed seats (13). The second limiting rods (14) are symmetrically arranged. Movable plates (10) are provided on both sides of the outer side of the second limiting rods (14). The movable plates (10) slide and are limited to the second limiting rods (14). Mounting seats (11) are fixedly provided at the four corners of the upper end of the movable seat (9). A first hydraulic telescopic device (12) is fixedly provided on one side of the outer side of the mounting seat (11). The telescopic end of the first hydraulic telescopic device (12) extends to the other side of the mounting seat (11) and is fixedly connected to the movable plate (10).

2. The bimetallic composite tube hydraulic bulging device according to claim 1, characterized in that: A lead screw (8) is provided at the center of the slide groove (5). Both sides of the lead screw (8) are rotatably connected to the inner wall of the slide groove (5). A first limiting rod (7) is fixedly provided inside the slide groove (5) at the front and rear ends of the lead screw (8). The first limiting rod (7) and the lead screw (8) both pass through the movable seat (9). The movable seat (9) slides and limits the first limiting rod (7).

3. The bimetallic composite tube hydraulic bulging device according to claim 2, characterized in that: A servo motor (6) is fixedly installed on one side of the base (1). The output shaft of the servo motor (6) extends into the interior of the slide groove (5) and is fixedly connected to the lead screw (8).

4. The bimetallic composite tube hydraulic bulging device according to claim 3, characterized in that: The front and rear ends of the upper end of the movable plate (10) are fixedly provided with a fixed frame (15). A second hydraulic telescopic device (16) is fixedly provided on one side of the outside of the fixed frame (15). The telescopic end of the second hydraulic telescopic device (16) extends to the other side of the fixed frame (15). A clamping plate (17) is fixedly provided at one end of the telescopic end of the second hydraulic telescopic device (16).

5. The bimetallic composite tube hydraulic bulging device according to claim 4, characterized in that: A rubber pad (18) is provided at one end of the clamping plate (17) near the center of the base (1), and the rubber pad (18) is fixedly connected to the clamping plate (17) by a polymer adhesive.

6. The bimetallic composite tube hydraulic bulging device according to claim 5, characterized in that: A high-pressure hydraulic pump assembly (2) is fixedly installed on one side of the upper end of the base (1). A core rod (3) is installed on the side of the high-pressure hydraulic pump assembly (2) near the opening of the slide groove (5). A high-pressure resistant rubber (4) is fixedly installed on the outside of the core rod (3).

7. The bimetallic composite tube hydraulic bulging device according to claim 6, characterized in that: A tube (19) is provided between the clamping plates (17). The tube (19) is placed horizontally and corresponds to the position of the core rod (3). The outer wall of the tube (19) is in contact with the rubber pad (18).

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