Combined clamp for magnetic pole welding positioner

Abstract

The utility model provides a combined clamp for a magnetic pole welding positioner, and relates to the technical field of magnetic pole welding positioners. The combined clamp comprises a base which is vertically arranged and is connected with a turntable of the magnetic pole welding positioner; the base is connected with the base; the vertical clamping mechanism is arranged at the position, above the base, of the base, and a downward pressing clamping arm of the vertical clamping mechanism is used for pushing a magnetic pole downwards; and the two transverse clamping mechanisms are oppositely arranged above the base, and transverse clamping arms of the two transverse clamping mechanisms are used for pushing and clamping the magnetic pole from the left side and the right side. And lateral and vertical omnibearing clamping and fixing of the magnetic pole at the position of the turntable of the positioner are realized. And when the lateral fixation of the magnetic pole is loosened, the magnetic pole is fixed again through the corresponding transverse clamping arms, so that the positioning and fixing precision of the magnetic pole of the large generator in the rotating process on the positioner is improved.

Description

Technical Field

[0001] This utility model relates to the field of magnetic pole welding positioner technology, and more specifically, to a combined fixture for a magnetic pole welding positioner. Background Technology

[0002] The generator magnetic pole is the core component of the generator rotor. It is responsible for generating a magnetic field and converting mechanical energy into electrical energy through the principle of electromagnetic induction. The basic components of the magnetic pole include an iron core, coils, and insulating materials. Some structures also include auxiliary components such as damping rings and support blocks.

[0003] The manufacturing of magnetic poles for large generators often requires welding. Due to the unique structure of the magnetic poles, a positioner is needed to clamp and fix them, and then the positioner is rotated to weld different positions of the magnetic poles to maintain the welding precision of the welds at different cross-sections.

[0004] However, the positioning and fixing force of the positioner fixture in the existing technology is insufficient. After the magnetic pole is rotated multiple times, the lateral fixing of the magnetic pole becomes loose, resulting in inaccurate positioning and fixing on the positioner, which seriously affects the welding accuracy of the magnetic pole weld. Utility Model Content

[0005] The technical problem to be solved by this utility model is how to improve the positioning and fixing accuracy of the magnetic poles of a large generator during the rotation process on the positioner.

[0006] To address the above problems, this utility model provides a combined fixture for a magnetic pole welding positioner, comprising:

[0007] The base is erected and connected to the turntable of the magnetic pole welding positioner;

[0008] The base is connected to the pedestal;

[0009] A vertical clamping mechanism is disposed at the base above the base, and the downward clamping arm of the vertical clamping mechanism is used to push the magnetic pole downward; and

[0010] Two lateral clamping mechanisms are arranged opposite each other above the base, and the lateral clamping arms of the two lateral clamping mechanisms are used to push and clamp the magnetic pole from the left and right sides.

[0011] Furthermore, the vertical clamping mechanism includes:

[0012] A top seat is disposed above the base and connected to the base;

[0013] A push rod is vertically inserted into the top seat; the downward clamping arm is located below the top seat; the lower end of the push rod extends out of the bottom of the top seat and connects to the downward clamping arm; and

[0014] A hydraulic actuator is disposed at the top seat and connected to the top rod, the hydraulic actuator being used to drive the top rod to move up and down.

[0015] Furthermore, the pressing arm is a horizontally arranged plate-shaped structure, and the bottom profile of the cross-section of the pressing arm is an inverted V-shape. The cross-section of the pressing arm is perpendicular to the axis of the turntable.

[0016] Furthermore, the vertical clamping mechanism also includes a guide post, which stands upright on the top surface of the pressing arm and is inserted into the top seat.

[0017] Furthermore, the lateral clamping mechanism includes:

[0018] A horizontal support is provided at the base;

[0019] A drive motor is located at the transverse support;

[0020] A lead screw, disposed at the transverse support, is connected to the drive motor and extends in the left-right direction. The lead screw is connected to the transverse clamping arm via a helical drive.

[0021] A guide mechanism is provided at the transverse support and is arranged parallel to the lead screw. The guide mechanism cooperates with the transverse clamping arm to make the transverse clamping mechanism reciprocate along the lead screw.

[0022] Furthermore, the guiding mechanism includes:

[0023] A guide rail is mounted on the transverse support, the guide rail being parallel to the lead screw; a transverse clamping arm is mounted on the guide rail, the transverse clamping arm being used for reciprocating movement along the guide rail; and

[0024] An elongated through hole is provided at the transverse support. The elongated through hole is parallel to the lead screw. The lead screw is located below the elongated through hole. A downwardly protruding limiting protrusion is provided at the bottom end of the transverse clamping arm. The limiting protrusion is located in the elongated through hole. The lead screw passes through the limiting protrusion and engages with it in a helical transmission.

[0025] Furthermore, the lateral clamping arm includes:

[0026] A pad block is detachably mounted on the guide rail, and the limiting protrusion is located on the bottom surface of the pad block;

[0027] A first base plate, detachably mounted on the pad, is a square plate and is horizontally positioned; and

[0028] A side clamp is erected on the first base plate and is connected to the first base plate.

[0029] Furthermore, the transverse supports of the two transverse clamping mechanisms are arranged parallel to each other, with one transverse support positioned above the other transverse support.

[0030] Furthermore, the base includes:

[0031] Two vertical plates are erected parallel to each other, each vertical plate being connected to the base, and each horizontal support is connected to one of the vertical plates; and

[0032] The second base plate is connected to the two vertical plates respectively, and the second base plate is horizontally set on the two vertical plates.

[0033] Furthermore, the top surface of the second base plate and the bottom surface of the pressing arm are respectively detachably connected to supporting nylon plates.

[0034] The technical effects of this utility model include at least the following:

[0035] In use, one end of the magnetic pole can be placed on the base first. Then, the magnetic pole is pushed and clamped from both sides by two lateral clamping mechanisms. During this process, the magnetic pole can be pushed by either lateral clamping arm to adjust its position on the base. This can be used to position the magnetic pole before clamping, or the two lateral clamping arms can be pushed towards the center simultaneously to automatically bring the magnetic pole end towards the center of the base, achieving automatic positioning of the magnetic pole on both sides. After the lateral clamping arms of the two lateral clamping mechanisms clamp the magnetic pole laterally, the downward clamping arm of the vertical clamping mechanism pushes the magnetic pole downward, clamping and fixing the magnetic pole vertically to the base. In this way, through the cooperation of the base, vertical clamping mechanism, and two lateral clamping mechanisms in this embodiment, the magnetic pole at the positioner turntable can be clamped and fixed in all directions, both laterally and vertically. If the lateral fixation of the magnetic pole becomes loose, the corresponding lateral clamping arm can be used to fix the magnetic pole again, thereby improving the positioning and fixing accuracy of the magnetic pole of the large generator during rotation on the positioner. Attached Figure Description

[0036] Figure 1 This is a schematic perspective view of the combined clamp according to a specific embodiment of the present utility model;

[0037] Figure 2 for Figure 1 Enlarged view of point Q;

[0038] Figure 3 Another schematic perspective view of the combined clamp according to a specific embodiment of this utility model;

[0039] Figure 4 for Figure 3 Enlarged view of point P;

[0040] Reference numerals: 1. Base; 11. Turntable; 21. Vertical plate; 22. Second base plate; 3. Vertical clamping mechanism; 31. Downward clamping arm; 32. Top seat; 33. Top rod; 34. Guide column; 35. Hydraulic actuator; 41. Lateral clamping arm; 411. Pad block; 412. First base plate; 413. Side clamping plate; 42. Limiting protrusion; 5. Lateral support; 51. Drive motor; 52. Lead screw; 53. Guide rail; 54. Long strip through hole. Detailed Implementation

[0041] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the embodiments of this utility model. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. Embodiments of this utility model can be implemented in many ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0042] See Figures 1 to 4 This embodiment provides a combined fixture for a magnetic pole welding positioner, comprising:

[0043] The base 1 is erected and connected to the turntable 11 of the magnetic pole welding positioner;

[0044] The base is connected to the base 1;

[0045] A vertical clamping mechanism 3 is disposed on the base 1 above the base; the downward clamping arm 31 of the vertical clamping mechanism 3 is used to push the magnetic pole downward; and

[0046] Two lateral clamping mechanisms are arranged opposite each other above the base, and the lateral clamping arms 41 of the two lateral clamping mechanisms are used to push and clamp the magnetic pole from the left and right sides.

[0047] It should be noted that in this embodiment, there can be two combined clamps, each installed on a positioner, and the two combined clamps are used to clamp and fix both ends of the magnetic pole. Of course, in this embodiment, there can also be a single combined clamp, which clamps and fixes one end of the magnetic pole and cooperates with other positioning and fixing mechanisms of the positioner to meet various usage requirements according to the actual needs of the positioner.

[0048] In addition, the downward pressing arm 31 here can be achieved by the interaction of a worm gear and a worm wheel, or by the interaction of a lead screw 52 and a lead screw nut, or by the interaction of a hydraulic or pneumatic piston cylinder and a piston rod to achieve the vertical downward pushing.

[0049] Similarly, the transverse clamping arm 41 can also be pushed in the left and right direction by the cooperation of a worm gear and worm, the cooperation of a lead screw 52 and a lead nut, or the cooperation of a hydraulic or pneumatic piston cylinder and piston rod.

[0050] In use, one end of the magnetic pole can be placed on the base first, and then the magnetic pole can be pushed and clamped from the left and right sides by two horizontal clamping mechanisms. During this process, the magnetic pole can be pushed by either side of the horizontal clamping arm 41 to adjust its position on the base. This can be used to position the magnetic pole before clamping, or the two horizontal clamping arms 41 can be pushed towards the center simultaneously to make the magnetic pole end automatically move towards the center of the base, thus achieving automatic positioning of the magnetic pole on the left and right sides. After the horizontal clamping arms 41 of the two horizontal clamping mechanisms clamp the magnetic pole laterally, the downward clamping arm 31 of the vertical clamping mechanism 3 pushes the magnetic pole downward, so that the downward clamping arm 31 and the base clamp and fix the magnetic pole vertically. In this way, through the cooperation of the base 1, the base, the vertical clamping mechanism 3 and the two horizontal clamping mechanisms in this embodiment, the magnetic pole at the positioner turntable 11 can be clamped and fixed in all directions, both laterally and vertically. When the lateral fixation of the magnetic pole becomes loose, the magnetic pole is re-fixed by the corresponding lateral clamping arm 41, thereby improving the positioning and fixing accuracy of the magnetic pole of the large generator during rotation on the positioner.

[0051] Furthermore, the vertical clamping mechanism 3 includes:

[0052] Top seat 32 is disposed above the base and connected to the base 1;

[0053] A push rod 33 is vertically inserted into the top seat 32; a downward clamping arm 31 is disposed below the top seat 32; the lower end of the push rod 33 extends out of the bottom of the top seat 32 and connects to the downward clamping arm 31; and

[0054] A hydraulic actuator 35 is disposed at the top seat 32 and connected to the top rod 33. The hydraulic actuator 35 is used to drive the top rod 33 to move up and down.

[0055] The hydraulic actuator 35 here can be a hydraulic cylinder, which utilizes the characteristics of hydraulic transmission, such as high load-bearing capacity and strong low-speed heavy-load capacity, to achieve a reliable clamping and fixing of the magnetic poles from the critical vertical direction.

[0056] Furthermore, the pressing arm 31 is a horizontally arranged plate-shaped structure, and the bottom profile of the cross-section of the pressing arm 31 is an inverted V-shape. The cross-section of the pressing arm 31 is perpendicular to the axis of the turntable 11.

[0057] By utilizing the specific shape of the bottom surface of the pressing arm 31, the top of the magnetic pole is effectively positioned and fixed, so that the top of the magnetic pole can form surface contact with the bottom surface of the pressing arm 31 as much as possible, thereby increasing the clamping contact area and improving the positioning and fixing effect.

[0058] Furthermore, the vertical clamping mechanism 3 also includes a guide post 34, which stands upright on the top surface of the pressing arm 31 and is inserted into the top seat 32.

[0059] The guide post 34 improves the accuracy of the vertical movement of the pressure arm 31.

[0060] Preferably, there are two guide posts 34, which are respectively arranged on the left and right sides of the pressing arm 31.

[0061] Furthermore, the lateral clamping mechanism includes:

[0062] Horizontal support 5 is provided at the base;

[0063] The drive motor 51 is located at the transverse support 5;

[0064] A lead screw 52 is disposed at the transverse support 5, and is connected to the drive motor 51. The lead screw 52 extends in the left-right direction, and is connected to the transverse clamping arm 41 via a screw drive.

[0065] A guide mechanism is provided at the transverse support 5 and is arranged parallel to the lead screw 52. The guide mechanism cooperates with the transverse clamping arm 41 to make the transverse clamping mechanism reciprocate along the lead screw 52.

[0066] The drive motor 51 drives the lead screw 52 to rotate, causing the transverse clamping arm 41 to move left and right under the action of the guide mechanism. Taking advantage of the good self-locking property of the screw drive, after the transverse clamping arm 41 effectively pushes and fixes the magnetic pole laterally, it prevents the transverse clamping arm 41 from loosening laterally under the action of centrifugal force during the rotation of the turntable 11.

[0067] Preferably, the drive motor 51 is a servo motor. By utilizing the controllable rotation angle of the servo motor, the rotation angles of the two drive motors 51 are synchronized, thereby enabling the two transverse clamping arms 41 to push the magnetic poles synchronously from the left and right directions.

[0068] Furthermore, the guiding mechanism includes:

[0069] Guide rail 53 is mounted on the transverse support 5, and is arranged parallel to the lead screw 52. Transverse clamping arm 41 is mounted on the guide rail 53 and is used for reciprocating movement along the guide rail 53.

[0070] An elongated through hole 54 is provided at the transverse support 5. The elongated through hole 54 is parallel to the lead screw 52. The lead screw 52 is located below the elongated through hole 54. The bottom end of the transverse clamping arm 41 is provided with a downward protruding limiting protrusion 42. The limiting protrusion 42 is located in the elongated through hole 54. The lead screw 52 passes through the limiting protrusion 42 and is engaged in a helical transmission with it.

[0071] The limiting protrusion 42, located in the elongated through hole 54, restricts the movement distance of the transverse clamping arm 41, preventing it from disengaging from the lead screw 52 and providing good guidance for the transverse clamping arm 41. Furthermore, in conjunction with the guide rail 53, it ensures the accuracy of the transverse clamping arm 41's linear left-right movement.

[0072] Furthermore, the lateral clamping arm 41 includes:

[0073] The pad 411 is detachably mounted on the guide rail 53, and the limiting protrusion 42 is mounted on the bottom surface of the pad 411.

[0074] A first base plate 412 is detachably mounted on the pad 411. The first base plate 412 is a square plate and is horizontally positioned.

[0075] A side clamping plate 413 is erected on the first base plate 412 and is connected to the first base plate 412.

[0076] The side clamping plate 413 is used to clamp and fix the magnetic pole laterally. The detachable pad 411 allows for the selection of a suitable height pad 411 according to the height requirements of different types of magnetic poles, thereby adjusting the clamping height position of the first base plate 412 and the side clamping plate 413.

[0077] Furthermore, the transverse supports 5 of the two transverse clamping mechanisms are arranged parallel to each other, with one transverse support 5 positioned above the other transverse support 5.

[0078] This design effectively saves the overall space occupied by the two lateral clamping mechanisms, thus reducing the size of the combined fixture.

[0079] Furthermore, the base includes:

[0080] Two vertical plates 21 are erected parallel to each other, and the vertical plates 21 are connected to the base 1. Each horizontal support 5 is connected to one of the vertical plates 21.

[0081] The second base plate 22 is connected to the two vertical plates 21 respectively, and the second base plate 22 is horizontally arranged on the two vertical plates 21.

[0082] This design effectively reduces the weight of the base and decreases power consumption during the rotation of turntable 11.

[0083] Furthermore, the top surface of the second base plate 22 and the bottom surface of the pressing arm 31 are respectively detachably connected to supporting nylon plates. In addition, the inner sides of the two side clamping plates 413 are detachably connected to upright nylon plates.

[0084] These nylon sheets are used to prevent damage to workpieces during lifting and clamping.

[0085] Although the above disclosure of this embodiment is provided, the scope of protection disclosed in this embodiment is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this embodiment, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A combined fixture for a magnetic pole welding positioner, characterized in that, include: The base is erected and connected to the turntable of the magnetic pole welding positioner; The base is connected to the pedestal; A vertical clamping mechanism is disposed at the base above the base, and the downward clamping arm of the vertical clamping mechanism is used to push the magnetic pole downward; and Two lateral clamping mechanisms are arranged opposite each other above the base, and the lateral clamping arms of the two lateral clamping mechanisms are used to push and clamp the magnetic pole from the left and right sides.

2. The combined clamp according to claim 1, characterized in that, The vertical clamping mechanism includes: A top seat is disposed above the base and connected to the base; A push rod is vertically inserted into the top seat; the downward clamping arm is located below the top seat; the lower end of the push rod extends out of the bottom of the top seat and connects to the downward clamping arm; and A hydraulic actuator is disposed at the top seat and connected to the top rod, the hydraulic actuator being used to drive the top rod to move up and down.

3. The combined clamp according to claim 2, characterized in that, The pressing arm is a horizontally arranged plate-shaped structure. The bottom profile of the cross-section of the pressing arm is an inverted V-shape, and the cross-section of the pressing arm is perpendicular to the axis of the turntable.

4. The combined fixture according to claim 3, characterized in that, The vertical clamping mechanism also includes a guide post, which stands upright on the top surface of the downward clamping arm and is inserted into the top seat.

5. The combined clamp according to claim 1, characterized in that, The lateral clamping mechanism includes: A horizontal support is provided at the base; A drive motor is located at the transverse support; A lead screw, disposed at the transverse support, is connected to the drive motor and extends in the left-right direction. The lead screw is connected to the transverse clamping arm via a helical drive. A guide mechanism is provided at the transverse support and is arranged parallel to the lead screw. The guide mechanism cooperates with the transverse clamping arm to make the transverse clamping mechanism reciprocate along the lead screw.

6. The combined clamp according to claim 5, characterized in that, The guiding mechanism includes: A guide rail is mounted on the transverse support, the guide rail being parallel to the lead screw; a transverse clamping arm is mounted on the guide rail, the transverse clamping arm being used for reciprocating movement along the guide rail; and An elongated through hole is provided at the transverse support. The elongated through hole is parallel to the lead screw. The lead screw is located below the elongated through hole. A downwardly protruding limiting protrusion is provided at the bottom end of the transverse clamping arm. The limiting protrusion is located in the elongated through hole. The lead screw passes through the limiting protrusion and engages with it in a helical transmission.

7. The combined clamp according to claim 6, characterized in that, The lateral clamping arm includes: A pad block is detachably mounted on the guide rail, and the limiting protrusion is located on the bottom surface of the pad block; A first base plate, detachably mounted on the pad, is a square plate and is horizontally positioned; and A side clamp is erected on the first base plate and is connected to the first base plate.

8. The combined clamp according to claim 6, characterized in that, The transverse supports of the two transverse clamping mechanisms are arranged parallel to each other, with one transverse support positioned above the other transverse support.

9. The combined clamp according to claim 6, characterized in that, The base includes: Two vertical plates are erected parallel to each other, each vertical plate being connected to the base, and each horizontal support is connected to one of the vertical plates; and The second base plate is connected to the two vertical plates respectively, and the second base plate is horizontally set on the two vertical plates.

10. The combined clamp according to claim 9, characterized in that, The top surface of the second base plate and the bottom surface of the pressing arm are respectively detachably connected to supporting nylon plates.

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