Preheating device for welding large plunger
By designing a preheating device with a movable base, a two-axis moving mechanism, and a rotating component, and using a stepper motor to drive the annular rotating body and the flame nozzle to achieve uniform heating of the plunger surface, the problem of poor preheating effect and safety hazards in the welding process of large plungers is solved, and the preheating effect and safety are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-04-14
AI Technical Summary
In the welding process of large plungers, the existing technology has poor preheating effect and poses safety hazards, especially since the plunger is large in size and a lifting tool is required for preheating the top.
It adopts a movable base, a two-axis moving mechanism, a rotating component and a heating component. The ring-shaped rotating body and the nozzle are driven by a stepper motor to achieve uniform heating of the plunger surface. The plunger surface is protected by a centering stud and ball bearings. The operator adjusts the centering stud and the moving mechanism to make the ring-shaped rotating body coaxial with the plunger. The nozzle rotates repeatedly within the range of 0-30 degrees to perform heating.
This achieves uniform preheating of the plunger surface, reduces the labor intensity of workers, and improves safety and preheating effect.
Smart Images
Figure CN224115370U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of large plunger processing, and in particular to a preheating device for welding large plungers. Background Technology
[0002] A plunger is a workpiece that can reciprocate in a cylinder to change the volume of a sealed working cavity to achieve oil suction and pressure. Some large plungers require submerged arc welding during processing. During processing, the plunger welding area needs to be preheated. In existing technology, preheating is generally done by workers holding a torch.
[0003] However, due to the large size of the plunger, a lifting tool is needed to preheat the top, resulting in poor preheating and potential safety hazards. Utility Model Content
[0004] The purpose of this application is to provide a preheating device for welding large plungers to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this application provides a preheating device for large plunger welding, employing the following technical solution:
[0006] A preheating device for large plunger welding includes a movable base, a two-axis moving mechanism, a rotating assembly, and a heating assembly. The two-axis moving mechanism is fixed on the movable base, and the rotating assembly is mounted on the two-axis moving mechanism. The rotating assembly includes an annular rotating body, a motor, and a support base. The annular rotating body is rotatably connected to the support base, and the motor drives the annular rotating body to rotate. Three centering studs are evenly threaded onto the surface of the annular rotating body. The heating assembly includes an annular pipe, which is fixed inside the annular rotating body and coaxially arranged with it. Multiple nozzles are evenly fixed on the inner wall of the annular pipe.
[0007] The movable base is fixed with universal wheels with locking function at the four corners of its bottom.
[0008] The two-axis moving mechanism includes an X-axis moving module and a Z-axis moving module. The Z-axis moving module is mounted on the X-axis moving module. A bracket is fixed on the slide of the Z-axis moving module, and the support base is fixed on the bracket.
[0009] Both the X-axis and Z-axis movement modules are heavy-duty slide modules and are controlled by hand cranks.
[0010] Preferably, the motor is a stepper motor, and the rotation angle of the annular rotating body is 0-30 degrees.
[0011] By adopting the above technical solution, a stepper motor is a motor that converts electrical pulse signals into corresponding angular or linear displacements. Each time a pulse signal is input, the rotor rotates by an angle or moves forward one step, thereby enabling multiple nozzles to be heated evenly along the periphery of the plunger.
[0012] Preferably, in order to protect the plunger surface, the end of the centering stud is fitted with balls.
[0013] In summary, this application includes at least one of the following beneficial technical effects: the preheating device for large plunger welding has a simple structure and is easy to use. With the cooperation of two workers, one adjusting the centering stud and the other adjusting the two-axis moving mechanism, the annular rotating body and the plunger are kept approximately on the same axis. After that, the nozzle works, and the stepper motor drives the annular rotating body to rotate repeatedly within an angle of 0-30 degrees, thereby achieving simultaneous and uniform heating of the plunger surface, good preheating effect, low labor intensity for workers, and safety and reliability. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.
[0015] Figure 2 These are schematic diagrams of the structure from different perspectives of embodiments of this application.
[0016] Explanation of reference numerals in the attached drawings: 1. Movable base; 11. Caster wheel; 2. Two-axis moving mechanism; 21. X-axis moving module; 22. Z-axis moving module; 23. Bracket; 3. Annular rotating body; 31. Centering stud; 311. Ball bearing; 4. Motor; 5. Support base; 6. Annular pipe; 61. Flame nozzle. Detailed Implementation
[0017] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0018] This application discloses a preheating device for welding large plungers, referring to... Figure 1-2The system includes a movable base 1, a two-axis moving mechanism 2, a rotating assembly, and a heating assembly. The four corners of the bottom of the movable base 1 are fixed with universal wheels 11 with locking functions. The two-axis moving mechanism 2 is fixed to the movable base 1. The rotating assembly is mounted on the two-axis moving mechanism 2. The rotating assembly includes a ring-shaped rotating body 3, a motor 4, and a support base 5. The ring-shaped rotating body 3 is rotatably connected to the support base 5. The motor 4 drives the ring-shaped rotating body 3 to rotate. Three centering studs 31 are evenly threaded onto the surface of the ring-shaped rotating body 3. Rollers are installed at the ends of the centering studs 31. The heating assembly includes an annular pipe 6, which is fixed inside an annular rotating body 3. The annular pipe 6 and the annular rotating body 3 are coaxially arranged. Multiple nozzles 61 are uniformly fixed on the inner wall of the annular pipe 6. The motor 4 is a stepper motor 4, and the rotation angle of the annular rotating body 3 is 0-30 degrees. The stepper motor 4 is a motor that converts electrical pulse signals into corresponding angular or linear displacements. Each time a pulse signal is input, the rotor rotates by an angle or moves forward one step, so that the multiple nozzles 61 can be uniformly heated along the periphery of the plunger.
[0019] Reference Figure 1 The two-axis moving mechanism 2 includes an X-axis moving module 21 and a Z-axis moving module 22. The Z-axis moving module 22 is mounted on the X-axis moving module 21. A bracket 23 is fixed on the slide of the Z-axis moving module 22, and a support base 5 is fixed on the bracket 23. Both the X-axis moving module 21 and the Z-axis moving module 22 are heavy-duty slide modules and are both controlled by hand cranks.
[0020] The implementation principle of a preheating device for welding large plungers according to an embodiment of this application is as follows:
[0021] During processing, the annular rotating body 3 in the preheating device is first passed through the plunger. After the two plungers are placed stably in place, the annular pipe 6 is moved to the weld seam via the movable base 1. Then, with the cooperation of two workers, one adjusts the centering stud 31 and the other adjusts the two-axis moving mechanism 2, the annular rotating body 3 and the plunger are kept roughly on the same axis. After that, the flame nozzle 61 works, and the stepper motor 4 drives the annular rotating body 3 to rotate repeatedly within the angle of 0-30 degrees. This allows for simultaneous and uniform heating of the plunger surface, resulting in good preheating effect, low labor intensity for workers, and safety and reliability.
[0022] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A preheating device for welding large plungers, characterized in that: The device includes a movable base (1), a two-axis moving mechanism (2), a rotating component, and a heating component. The two-axis moving mechanism (2) is fixed on the movable base (1), and the rotating component is mounted on the two-axis moving mechanism (2). The rotating component includes an annular rotating body (3), a motor (4), and a support base (5). The annular rotating body (3) is rotatably connected to the support base (5). The motor (4) is used to drive the annular rotating body (3) to rotate. The surface of the annular rotating body (3) is evenly threaded with three centering studs (31). The heating component includes an annular pipe (6), which is fixed inside the annular rotating body (3). The annular pipe (6) is coaxially arranged with the annular rotating body (3). Multiple nozzles (61) are evenly fixed on the inner wall of the annular pipe (6).
2. The preheating device for large plunger welding according to claim 1, characterized in that: The movable base (1) is fixed with universal wheels (11) with locking function at the four corners of its bottom end.
3. The preheating device for large plunger welding according to claim 1, characterized in that: The two-axis moving mechanism (2) includes an X-axis moving module (21) and a Z-axis moving module (22). The Z-axis moving module (22) is mounted on the X-axis moving module (21). A bracket (23) is fixed on the slide of the Z-axis moving module (22), and the support base (5) is fixed on the bracket (23).
4. The preheating device for large plunger welding according to claim 3, characterized in that: Both the X-axis moving module (21) and the Z-axis moving module (22) are heavy-duty slide modules and are controlled by hand cranks.
5. The preheating device for large plunger welding according to claim 1, characterized in that: The motor (4) is a stepper motor (4), and the rotation angle of the annular rotating body (3) is 0-30 degrees.
6. The preheating device for large plunger welding according to claim 1, characterized in that: The end of the centering stud (31) is fitted with a ball bearing (311).