Ring joint welding tool with locking function

Abstract

The application relates to the technical field of pressure container welding, and discloses a girth seam welding tool with a locking function, which comprises a base, two supporting rollers are arranged at the top of the base, rotating shafts are arranged at the two ends of the supporting rollers, and the outer surfaces of the middle portions of the rotating shafts are rotatably arranged on the top of the base through supporting frames. The girth seam welding tool with the locking function is worked through the first hydraulic rod, the push plate is driven to move downwards, the push plate drives the swing rod to swing, the swing rod pushes the locking clamps to tightly adhere to the outer surfaces of the middle portions of the transmission shafts through the push rods when the swing rod swings, the rotation of the transmission shafts is limited, the rotation of the supporting rollers is limited through the chains, the rotation of the pressure container can be timely stopped when the workers fall down in the pressure container or other special conditions are encountered, continuous rotation of the pressure container is prevented, some accidents caused by the continuous rotation of the pressure container are avoided, and the safety during girth seam welding of the pressure container is improved.

Description

Technical Field

[0001] This application relates to the field of pressure vessel welding technology, specifically to a circumferential weld tooling with a locking function. Background Technology

[0002] Currently, when manufacturing pressure vessels, plates are typically cut into rectangular plates of a specific size. The opposite sides of the rectangular plates are then welded together to form a cylindrical body. Multiple cylindrical bodies are then welded together at both ends to form the main body of the pressure vessel. A welding fixture is used to assist in welding the circumferential seams of the pressure vessel.

[0003] Existing circumferential welding fixtures cannot stop the rotation of the pressure vessel in time when special circumstances occur, such as workers falling inside the pressure vessel. The continuous rotation of the pressure vessel can easily lead to accidents and affect the safety of circumferential welding of the pressure vessel. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a circumferential welding fixture with a locking function. This fixture can promptly stop the rotation of the pressure vessel in special circumstances such as a worker falling inside, preventing accidents caused by continuous rotation and improving safety during circumferential welding. It solves the problem that existing circumferential welding fixtures cannot promptly stop the rotation of the pressure vessel in special circumstances such as a worker falling inside, which can easily lead to accidents and affect the safety of circumferential welding.

[0005] To achieve the aforementioned goal of promptly stopping the rotation of the pressure vessel in special circumstances such as workers falling inside, preventing accidents caused by continuous rotation, and improving safety during circumferential welding of pressure vessels, this application provides the following technical solution: a circumferential welding fixture with a locking function, comprising a base, two support rollers at the top of the base, rotating shafts at both ends of the support rollers, the outer surface of the middle portion of the rotating shafts being rotatably mounted on the top of the base via a support frame, a first sprocket being provided on the outer surface of one end of the rotating shaft of each of the two support rollers, a chain being sleeved on the outer surface of the middle portion of each of the two first sprockets, and the inner wall of the two chains away from the first sprockets being sleeved on two second sprockets. On the outer surface of the middle part of the sprocket, the inner walls of the middle parts of the two second sprockets are set on the outer surface of the middle part of the same drive shaft. The outer surfaces of both ends of the drive shaft are rotatably set on the top of the base through a support frame. One end of the drive shaft is connected to the motor shaft at one end of the motor through a coupling assembly. The bottom of the motor is set on the top of the base through a fixing block. A locking claw is provided on the outer side of the outer surface of the middle part of the drive shaft. The locking claw is set on one end of the push rod. The top of the other end of the push rod is hinged to a swing rod through a hinge frame. The inner wall of the swing rod away from the push rod is hinged to one end of the bottom of the push plate through a hinge frame. A first hydraulic rod is provided on the top of the push plate. The end of the first hydraulic rod away from the push plate is set on the top of the base through a fixing frame.

[0006] The above scheme utilizes the first hydraulic rod to drive the push plate downwards, causing the push plate to swing the swing rod. When the swing rod swings, it pushes the locking jaws against the outer surface of the middle part of the drive shaft via the push rod, thereby restricting the rotation of the drive shaft. The chain further restricts the rotation of the support roller. This achieves the effect of stopping the rotation of the pressure vessel in time in special circumstances such as workers falling inside the pressure vessel, preventing accidents caused by the continuous rotation of the pressure vessel, and improving the safety of circumferential welding of the pressure vessel.

[0007] Furthermore, the coupling assembly includes a first coupling rod, a coupling sleeve, and a second coupling rod. The inner wall of the middle portion of the coupling sleeve is slidably connected to the outer surface of the middle portion of the first and second coupling rods. One end of the first coupling rod is disposed at one end of the transmission shaft, and one end of the second coupling rod is disposed at one end of the motor shaft. The outer surface of the middle portion of the first and second coupling rods is quadrilateral, and the shape of the outer surface of the middle portion of the first and second coupling rods is adapted to the shape of the inner wall of the middle portion of the coupling sleeve.

[0008] Through the above scheme, the coupling sleeve, the first coupling rod, and the second coupling rod, through the cooperation of their quadrilateral shapes, achieve a stable transmission connection between the drive shaft and the motor shaft. In an emergency, when it is necessary to disconnect the drive shaft, the coupling sleeve slides off the outer surface of the middle part of the second coupling rod, releasing the contact between the coupling sleeve and the second coupling rod, thereby releasing the transmission of the drive shaft. This allows for timely cutting off of power output and ensures the stability of the drive shaft locking.

[0009] Furthermore, the outer surface of the middle part of the coupling sleeve is rotatably disposed within the inner wall of one end of the connecting plate, and one side of the other end of the connecting plate is disposed at one end of the second hydraulic rod, and the other end of the second hydraulic rod is disposed at the top of the base through a support plate.

[0010] With the above solution, the operation of the second hydraulic rod can cause the connecting plate to move the coupling sleeve, which can conveniently adjust the working state of the coupling assembly. Furthermore, the combination of the second hydraulic rod and the connecting plate can conveniently move the coupling sleeve while preventing the torsional force of the coupling assembly from being transmitted to the second hydraulic rod, thus improving the service life of the second hydraulic rod.

[0011] Furthermore, an anti-slip pad is provided on the side of the locking gripper near the drive shaft, and the anti-slip pad is made of rubber anti-slip material.

[0012] The above solution increases the friction between the locking jaws and the drive shaft, improving the locking effect. When the locking jaws are pressed against the drive shaft, the anti-slip pad can effectively prevent the drive shaft from sliding or rotating, ensuring that the drive shaft can be stopped quickly and stably in an emergency.

[0013] Furthermore, the outer surface of the middle part of the push rod is slidably disposed within the inner wall of the middle part of the limiting frame, and the bottom of the limiting frame is disposed on the top of the base by a fixing rod.

[0014] Through the above scheme, the setting of the limit frame plays a guiding and restricting role in the movement of the push rod, ensuring the stability and accuracy of the push rod during the movement process. When the push rod pushes the locking jaws to stick tightly to the drive shaft, the limit frame can prevent the push rod from deviating or shaking, thereby improving the locking effect of the locking jaws and the overall stability of the equipment.

[0015] Furthermore, an anti-slip sleeve is provided on the outer surface of the middle part of the support roller, and the anti-slip sleeve is made of rubber anti-slip material.

[0016] The above-mentioned solution increases the friction between the support roller and the pressure vessel, improves the stability of the pressure vessel on the support roller, and enables the support roller to stably stop the pressure vessel from rotating when it stops. During the welding process, the anti-slip sleeve can effectively prevent the pressure vessel from sliding or rotating, thereby ensuring the welding quality and equipment safety.

[0017] Furthermore, there are two locking jaws, which are located on both sides of the outer surface of the middle part of the drive shaft and are symmetrically arranged.

[0018] With the above solution, the two symmetrically arranged locking jaws can lock the drive shaft from both sides simultaneously, and can prevent the drive shaft from deforming due to force on one side, which would prevent it from fitting tightly with the locking jaws, thus improving the locking effect and the stability of the equipment.

[0019] Furthermore, the inner wall edge of the coupling sleeve near the second coupling rod end is chamfered.

[0020] The above solution allows the chamfered edge of the inner wall of one end of the coupling sleeve to guide the coupling sleeve to slide stably on the second coupling rod, thereby improving the smoothness of the fit between the coupling sleeve and the second coupling rod.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0022] This circumferential welding fixture with locking function operates by using a first hydraulic rod to move a push plate downwards. This causes the push plate to swing a swinging rod. When the swinging rod swings, it pushes the locking jaws against the outer surface of the middle part of the drive shaft via the push rod, thereby restricting the rotation of the drive shaft. The chain also restricts the rotation of the support roller. This design allows for timely stopping of the pressure vessel's rotation in special circumstances, such as when a worker falls inside the pressure vessel, preventing accidents caused by continuous rotation and improving safety during circumferential welding of pressure vessels. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of this application;

[0024] Figure 2 This is a schematic diagram of the front structure of this application;

[0025] Figure 3 This is a top view of the structure of this application;

[0026] Figure 4 This is a schematic diagram showing the positional relationship between the two locking jaws and the drive shaft in this application;

[0027] Figure 5 This is a schematic diagram of the connection structure between the chain and the second sprocket in this application;

[0028] Figure 6 This is an exploded view of the coupling assembly of this application.

[0029] In the picture:

[0030] 1. Base; 2. Support roller; 3. Rotating shaft; 4. First sprocket; 5. Chain; 6. Drive shaft; 7. Coupling assembly; 701. First coupling rod; 702. Coupling sleeve; 703. Second coupling rod; 8. Motor; 9. Locking gripper; 10. Push rod; 11. Swing rod; 12. Push plate; 13. First hydraulic rod; 14. Connecting plate; 15. Second hydraulic rod; 16. Anti-slip pad; 17. Anti-slip sleeve; 18. Limiting frame; 19. Second sprocket. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] Please see Figure 1 , Figure 4 and Figure 5 This embodiment of a circumferential weldment fixture with locking function includes a base 1. Two support rollers 2 are provided on the top of the base 1. Rotating shafts 3 are provided at both ends of the support rollers 2. The outer surface of the middle portion of the rotating shaft 3 is rotatably mounted on the top of the base 1 via a support frame. A first sprocket 4 is provided on the outer surface of one end of the rotating shaft 3 of each of the two support rollers 2. A chain 5 is fitted onto the outer surface of the middle portion of each of the two first sprockets 4. The inner wall of the end of each chain 5 away from the first sprocket 4 is fitted onto the outer surface of the middle portion of two second sprockets 19. The inner wall of the middle portion of the two second sprockets 19 is located on the outer surface of the middle portion of the same drive shaft 6. The outer surfaces of both ends of the drive shaft 6... The drive shaft 6 is rotatably mounted on the top of the base 1 via a support frame. One end of the drive shaft 6 is connected to the motor shaft of the motor 8 via a coupling assembly 7. The bottom of the motor 8 is mounted on the top of the base 1 via a fixing block. A locking claw 9 is provided on the outer side of the middle outer surface of the drive shaft 6. The locking claw 9 is located at one end of the push rod 10. The top of the other end of the push rod 10 is hinged to a swing rod 11 via a hinge frame. The inner wall of the swing rod 11 away from the push rod 10 is hinged to one end of the bottom of the push plate 12 via a hinge frame. A first hydraulic rod 13 is provided on the top of the push plate 12. The end of the first hydraulic rod 13 away from the push plate 12 is mounted on the top of the base 1 via a fixing frame.

[0033] Please see Figure 2 , Figure 3 and Figure 6The coupling assembly 7 includes a first coupling rod 701, a coupling sleeve 702, and a second coupling rod 703. The inner wall of the middle portion of the coupling sleeve 702 is slidably connected to the outer surface of the middle portion of the first coupling rod 701 and the second coupling rod 703. One end of the first coupling rod 701 is disposed at one end of the transmission shaft 6, and one end of the second coupling rod 703 is disposed at one end of the motor shaft of the motor 8. The outer surface of the middle portion of the first coupling rod 701 and the second coupling rod 703 is quadrilateral. The coupling sleeve 702 is adapted to the shape of the inner wall of the middle part. The coupling sleeve 702, the first coupling rod 701 and the second coupling rod 703 are matched with the quadrilateral shape to realize a stable transmission connection between the transmission shaft 6 and the motor shaft of the motor 8. In case of emergency, when it is necessary to disconnect the transmission shaft 6, the coupling sleeve 702 slides off the outer surface of the middle part of the second coupling rod 703 to release the contact between the coupling sleeve 702 and the second coupling rod 703, thereby releasing the transmission of the transmission shaft 6. The power output can be cut off in time, ensuring the stability of locking the transmission shaft 6.

[0034] Please see Figure 1 , Figure 2 and Figure 3 The outer surface of the middle part of the coupling sleeve 702 is rotatably disposed within the inner wall of one end of the connecting plate 14. One side of the other end of the connecting plate 14 is disposed at one end of the second hydraulic rod 15. The other end of the second hydraulic rod 15 is disposed on the top of the base 1 through a support plate. The operation of the second hydraulic rod 15 can cause the connecting plate 14 to drive the coupling sleeve 702 to move, which can conveniently adjust the working state of the coupling assembly 7. Furthermore, the arrangement of the second hydraulic rod 15 in conjunction with the connecting plate 14 can conveniently drive the coupling sleeve 702 to move while preventing the torsional force of the coupling assembly 7 from being transmitted to the second hydraulic rod 15, thereby improving the service life of the second hydraulic rod 15.

[0035] Please see Figure 1 and Figure 4 The locking jaw 9 is provided with an anti-slip pad 16 on the side near the drive shaft 6. The anti-slip pad 16 is made of rubber anti-slip material. The anti-slip pad 16 increases the friction between the locking jaw 9 and the drive shaft 6, and improves the locking effect. When the locking jaw 9 is in close contact with the drive shaft 6, the anti-slip pad 16 can effectively prevent the drive shaft 6 from sliding or rotating, ensuring that the rotation of the drive shaft 6 can be stopped quickly and stably in an emergency.

[0036] Please see Figure 1 and Figure 4The outer surface of the middle part of the push rod 10 is slidably disposed within the inner wall of the middle part of the limiting frame 18. The bottom of the limiting frame 18 is disposed on the top of the base 1 by a fixing rod. The setting of the limiting frame 18 plays a guiding and restricting role in the movement of the push rod 10, ensuring the stability and accuracy of the push rod 10 during the movement process. When the push rod 10 pushes the locking claw 9 to press against the transmission shaft 6, the limiting frame 18 can prevent the push rod 10 from deviating or shaking, thereby improving the locking effect of the locking claw 9 and the overall stability of the equipment.

[0037] Please see Figure 1 and Figure 5 The outer surface of the middle part of the support roller 2 is provided with an anti-slip sleeve 17, which is made of rubber anti-slip material. The anti-slip sleeve 17 increases the friction between the support roller 2 and the pressure vessel, improves the stability of the pressure vessel on the support roller 2, and thus enables the support roller 2 to stably stop the pressure vessel from rotating when it stops rotating. During the welding process, the anti-slip sleeve 17 can effectively prevent the pressure vessel from sliding or rotating, thereby ensuring the welding quality and the safety of the equipment.

[0038] Please see Figure 1 and Figure 4 The number of locking jaws 9 is two, and the two locking jaws 9 are respectively located on both sides of the outer surface of the middle part of the transmission shaft 6. The two locking jaws 9 are symmetrically arranged. The two symmetrically arranged locking jaws 9 can lock the transmission shaft 6 from both sides at the same time, and can prevent the transmission shaft 6 from deforming due to force on one side, which would prevent it from being tightly fitted with the locking jaws 9, thus improving the locking effect and the stability of the equipment.

[0039] Please see Figure 1 and Figure 6 The inner edge of the coupling sleeve 702 near the second coupling rod 703 is chamfered. The chamfered edge of the inner edge of the coupling sleeve 702 can guide the coupling sleeve 702 to slide stably on the second coupling rod 703, thereby improving the smoothness of the fit between the coupling sleeve 702 and the second coupling rod 703.

[0040] In this embodiment, a circumferential welding fixture with a locking function operates by means of a first hydraulic rod 13, which drives a push plate 12 to move downwards. This causes the push plate 12 to drive a swing rod 11 to swing. When the swing rod 11 swings, it pushes a locking jaw 9 to press against the outer surface of the middle part of the transmission shaft 6 via a push rod 10, thereby restricting the rotation of the transmission shaft 6. The chain 5 also restricts the rotation of the support roller 2. This achieves the effect of stopping the rotation of the pressure vessel in time in special circumstances such as when a worker falls inside the pressure vessel, preventing accidents caused by the continuous rotation of the pressure vessel, and improving the safety of circumferential welding of the pressure vessel.

[0041] The working principle of the above embodiment is as follows: The cylinder of the pressure vessel to be welded is placed on top of two support rollers 2. The motor 8 operates, driving the transmission shaft 6 to rotate through the coupling assembly 7. The transmission shaft 6 drives two chains 5 through two second sprockets 19, which in turn drive two corresponding rotating shafts 3 through two first sprockets 4. This, in turn, drives the two support rollers 2 to rotate synchronously. The support rollers 2 drive the cylinder of the pressure vessel to rotate through the anti-slip sleeve 17. When it is necessary to stop the rotation of the pressure vessel in a special situation, the first hydraulic rod 13 and the second hydraulic rod 15 operate. The first hydraulic rod 13 drives the push plate 12 to move downward, and the push plate 12 drives the two swing rods 11 to swing. Two swing rods 11 drive two push rods 10 to move towards the drive shaft 6, pushing two locking jaws 9 to press tightly against the outer surfaces on both sides of the drive shaft 6. This causes the locking jaws 9 to work with the anti-slip pads 16 to clamp the drive shaft 6, fixing the angle of the drive shaft 6. Then, the chain 5 stops the support roller 2 from rotating. The support roller 2, in conjunction with the anti-slip sleeve 17, stops the cylinder of the pressure vessel from rotating. When the second hydraulic rod 15 is working, it pushes the connecting plate 14 to move. The connecting plate 14 causes the coupling sleeve 702 to gradually slip off the outer surface of the middle part of the second coupling rod 703, releasing the contact between the coupling sleeve 702 and the second coupling rod 703. This prevents the motor 8 from driving the drive shaft 6 to rotate through the coupling assembly 7, cutting off the power source of the drive shaft 6.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circumferential weldment fixture with locking function, comprising a base (1), characterized in that: The base (1) is provided with two support rollers (2) at the top. The two ends of the support rollers (2) are provided with rotating shafts (3). The outer surface of the middle part of the rotating shaft (3) is rotatably mounted on the top of the base (1) through a support frame. A first sprocket (4) is provided on the outer surface of one end of the rotating shaft (3) of each of the two support rollers (2). A chain (5) is sleeved on the outer surface of the middle part of each of the two first sprockets (4). The inner wall of the end of each chain (5) away from the first sprocket (4) is sleeved on the outer surface of the middle part of two second sprockets (19). The inner wall of the middle part of the two second sprockets (19) is located on the outer surface of the middle part of the same transmission shaft (6). The outer surfaces of both ends of the transmission shaft (6) are rotatably mounted on the top of the base (1) through a support frame. The transmission shaft (6) is connected to the motor shaft of the motor (8) via a coupling assembly (7). The bottom of the motor (8) is mounted on the top of the base (1) via a fixing block. A locking claw (9) is provided on the outer side of the middle outer surface of the transmission shaft (6). The locking claw (9) is located at one end of the push rod (10). The top of the other end of the push rod (10) is hinged to a swing rod (11) via a hinge frame. The inner wall of the swing rod (11) away from the push rod (10) is hinged to one end of the bottom of the push plate (12) via a hinge frame. A first hydraulic rod (13) is provided on the top of the push plate (12). The end of the first hydraulic rod (13) away from the push plate (12) is mounted on the top of the base (1) via a fixing frame.

2. The circumferential weldment fixture with locking function according to claim 1, characterized in that: The coupling assembly (7) includes a first coupling rod (701), a coupling sleeve (702), and a second coupling rod (703). The inner wall of the middle part of the coupling sleeve (702) is slidably connected to the outer surface of the middle part of the first coupling rod (701) and the second coupling rod (703). One end of the first coupling rod (701) is located at one end of the transmission shaft (6), and one end of the second coupling rod (703) is located at one end of the motor shaft of the motor (8). The outer surface of the middle part of the first coupling rod (701) and the second coupling rod (703) is quadrilateral. The shape of the outer surface of the middle part of the first coupling rod (701) and the second coupling rod (703) is adapted to the shape of the inner wall of the middle part of the coupling sleeve (702).

3. The circumferential weldment fixture with locking function according to claim 2, characterized in that: The outer surface of the middle part of the coupling sleeve (702) is rotatably disposed in the inner wall of one end of the connecting plate (14), and one side of the other end of the connecting plate (14) is disposed at one end of the second hydraulic rod (15), and the other end of the second hydraulic rod (15) is disposed on the top of the base (1) through the support plate.

4. The circumferential weldment fixture with locking function according to claim 1, characterized in that: The locking jaw (9) is provided with an anti-slip pad (16) on the side near the drive shaft (6), and the anti-slip pad (16) is made of rubber anti-slip material.

5. A circumferential weldment fixture with locking function according to claim 1, characterized in that: The outer surface of the middle part of the push rod (10) is slidably disposed within the inner wall of the middle part of the limiting frame (18), and the bottom of the limiting frame (18) is disposed on the top of the base (1) by a fixing rod.

6. The circumferential weldment fixture with locking function according to claim 1, characterized in that: The outer surface of the middle part of the support roller (2) is provided with an anti-slip sleeve (17), which is made of rubber anti-slip material.

7. A circumferential weldment fixture with locking function according to claim 1, characterized in that: The number of locking jaws (9) is two, and the two locking jaws (9) are located on both sides of the outer surface of the middle part of the transmission shaft (6), and the two locking jaws (9) are symmetrically arranged.

8. A circumferential weldment fixture with locking function according to claim 2, characterized in that: The inner edge of the coupling sleeve (702) near the second coupling rod (703) is chamfered.

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