Centrifugal fan welding clamp

Abstract

The utility model belongs to the technical field of welding clamps, and particularly relates to a centrifugal fan welding clamp which comprises a base. The top of the base is fixedly connected with a supporting rod. The top of the supporting rod is fixedly connected with a supporting block. A plurality of telescopic rods are fixedly connected to the side wall of the supporting block; the end part of the telescopic rod is fixedly connected with a top block; an ejector rod is hinged to the bottom of the ejector block; a sliding block is hinged to the bottom of the ejector rod. The supporting rod is in sliding fit with the sliding block. The top of the base is fixedly connected with an electric push rod; the output end of the electric push rod is fixedly connected with the sliding block. The ejection block moving outwards is used for abutting against the hole of the blade bottom plate, fixing of the blade bottom plate of the centrifugal fan can be achieved, the problem that when the blade bottom plate and the blade are welded, the position of the blade is interfered by a clamping plate is solved, and then the influence on welding of the blade bottom plate and the blade of the centrifugal fan is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of welding fixtures, in particular to a centrifugal fan welding fixture. Background Art

[0002] The centrifugal fan welding fixture is a tool used in the centrifugal fan welding process. Its function may be to fix the various components of the fan, ensuring that the position of the components is accurate and stable during welding, so as to improve the welding quality and efficiency.

[0003] The existing centrifugal fan welding fixture achieves clamping of the centrifugal fan blades during welding by squeezing and fixing the base plate of the centrifugal fan blades.

[0004] The blades of existing centrifugal fans are generally close to the edge of the blade base plate. When clamping, the clamping plate is likely to extend to the edge of the blade base plate, interfering with the position of the blade, thereby affecting the installation and welding of the blade.

[0005] To this end, the utility model provides a centrifugal fan welding fixture. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the centrifugal fan welding fixture described in the present invention includes a base; a support rod is fixedly connected to the top of the base; a support block is fixedly connected to the top of the support rod; a plurality of telescopic rods are fixedly connected to the side wall of the support block; the end of the telescopic rod is fixedly connected to a top block; the bottom of the top block is hingedly connected to a top rod; the bottom of the top rod is hingedly connected to a slider; the support rod and the slider are in sliding fit; an electric push rod is fixedly connected to the top of the base; the output end of the electric push rod is fixedly connected to the slider; by using the outward-moving top block to support the hole of the blade bottom plate, the centrifugal fan blade bottom plate can be fixed, reducing the problem of the splint interfering with the blade position when the blade bottom plate and the blade are welded, thereby reducing the impact on the welding of the centrifugal fan blade bottom plate and the blade.

[0008] Preferably, a cavity is provided inside the top block; a plurality of through slots are provided on the side wall of the top block; a limit plate is slidably connected inside the through slot; a spring is fixed to the side wall of the limit plate; the other end of the spring is connected to the inner side wall of the cavity; by providing a plurality of independently movable limit plates at the end of the top block, when the top block clamps and fixes the centrifugal fan blade bottom plate, the loosening and falling problems caused by the up and down movement of the centrifugal fan blade bottom plate can be reduced, thereby maintaining stability during the clamping process.

[0009] Preferably, an elastic cloth is fixed to the bottom of the through groove; the bottom of the elastic cloth is connected to the slider; the slider is wrapped in the middle of the support rod; this arrangement can reduce the problem of debris falling into the middle of the support rod during the welding process of the centrifugal fan blade base plate, which affects the sliding of the slider and improves the stability of the slider when sliding in the middle of the support rod.

[0010] Preferably, a bracket is fixedly connected to the top of the support block; a water spray ring is fixedly connected to the end of the bracket; a plurality of water spray holes are opened on the side wall of the water spray ring; the side wall of the water spray ring is connected to a water pipe; by providing a water spray ring on the top of the support block, the bottom plate of the centrifugal fan blade can be flushed, and the residual welding slag on the bottom plate of the centrifugal fan blade can be reduced. At the same time, the liquid sprayed from the water spray hole can be flushed to the telescopic rod, reducing the welding slag on the telescopic rod to ensure stable extension and retraction of the telescopic rod.

[0011] Preferably, an air jet ring is fixedly connected to the top of the water spray ring; a plurality of air jet holes are opened on the side wall of the air jet ring; an air supply pipe is connected to the middle of the air jet ring; by providing the air jet ring on the top of the water spray ring, it is necessary to connect the end of the air supply pipe to the air pump before use, and then the air pump can transport the gas to the inside of the air jet ring through the air supply pipe, and then spray it out from the air jet hole. At this time, the sprayed gas can further blow off the welding slag on the bottom plate of the centrifugal fan blade, and at the same time can increase the coverage area of ​​the liquid sprayed from the water spray hole, and at the same time increase the cooling effect during welding.

[0012] Preferably, a tray is fixedly connected to the top of the support block; the tray is located at the bottom of the water spray ring; by providing a tray on the top of the support block, it can guide the sprayed liquid and gas when the water spray ring and the air jet ring are in use, thereby achieving effective utilization of the sprayed gas and liquid.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The centrifugal fan welding fixture described in the present invention can fix the centrifugal fan blade base plate by using an outward-moving top block to support the holes of the blade base plate, thereby reducing the problem of the clamp interfering with the blade position when the blade base plate and the blade are welded, thereby reducing the impact on the welding of the centrifugal fan blade base plate and the blade.

[0015] 2. The centrifugal fan welding fixture described in the utility model has a water spray ring on the top of the support block to flush the base plate of the centrifugal fan blades, reducing the residual welding slag on the base plate of the centrifugal fan blades. At the same time, the liquid sprayed from the water spray hole can flush the telescopic rod, reducing the welding slag on the telescopic rod, so as to ensure the stable extension and retraction of the telescopic rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the coordination of the telescopic rod on the support rod of the utility model;

[0019] Figure 3 This is a schematic diagram of the matching structure of the support rod and the slider in the utility model;

[0020] Figure 4 This is a structural diagram of the water spray ring and the air jet ring on the support rod of the utility model;

[0021] Figure 5 Schematic diagram of the top block at the end of the telescopic rod;

[0022] In the figure: 1. Base; 11. Support rod; 12. Support block; 13. Telescopic rod; 14. Top block; 15. Top rod; 16. Slider; 17. Electric push rod; 2. Through slot; 21. Limit plate; 22. Spring; 23. Cavity; 3. Elastic cloth; 4. Bracket; 41. Water spray ring; 42. Water spray hole; 43. Water pipe; 5. Jet ring; 51. Jet hole; 52. Air pipe; 6. Tray. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figures 1 to 3As shown, a centrifugal fan welding fixture described in an embodiment of the present invention includes a base 1; a support rod 11 is fixedly connected to the top of the base 1; a support block 12 is fixedly connected to the top of the support rod 11; a plurality of telescopic rods 13 are fixedly connected to the side wall of the support block 12; the end of the telescopic rod 13 is fixedly connected to a top block 14; a top rod 15 is hingedly connected to the bottom of the top block 14; a slider 16 is hingedly connected to the bottom of the top rod 15; the support rod 11 and the slider 16 are in sliding fit; an electric push rod 17 is fixedly connected to the top of the base 1; the output end of the electric push rod 17 is fixedly connected to the slider 16; when working, the electric push rod 17 is first controlled to retract, and then the slider 16 slides, and the push rod 15 can pull the top block at the same time. 14. At this time, the telescopic rod 13 retracts synchronously, and then the bottom plate hole of the centrifugal fan blade to be welded is placed around the top block 14. At this time, the electric push rod 17 can be controlled to extend, and the slider 16 is pushed upward on the support rod 11. At this time, the top rod 15 can push the top block 14 to move toward the middle hole of the blade bottom plate, so that the side wall of the top block 14 contacts the hole of the blade bottom plate, thereby achieving fixed clamping of the blade bottom plate; by using the outward-moving top block 14 to push against the hole of the blade bottom plate, the centrifugal fan blade bottom plate can be fixed, reducing the problem of the splint interfering with the blade position when the blade bottom plate and the blade are welded, thereby reducing the impact on the welding of the centrifugal fan blade bottom plate and the blade.

[0025] like Figure 5 As shown, a cavity 23 is provided inside the top block 14; a plurality of through slots 2 are provided on the side wall of the top block 14; a limit plate 21 is slidably connected inside the through slot 2; a spring 22 is fixed to the side wall of the limit plate 21; the other end of the spring 22 is connected to the inner wall of the cavity 23; when the centrifugal fan blade bottom plate is squeezed and clamped from the inside to the outside by using the top block 14, the end of the limit plate 21 will first contact the inner diameter of the hole of the centrifugal fan blade bottom plate. At this time, the limit plate 21 in contact with the inner diameter of the bottom plate hole can move into the cavity 23 and compress the spring 22 inside. The remaining limit plates 21 remain in their original position to limit the centrifugal fan blade bottom plate. By providing a plurality of independently movable limit plates 21 at the end of the top block 14, when the top block 14 clamps and fixes the centrifugal fan blade bottom plate, the loosening and falling problems caused by the up and down movement of the centrifugal fan blade bottom plate can be reduced, thereby maintaining stability during the clamping process.

[0026] like Figure 2As shown, an elastic cloth 3 is fixed to the bottom of the through groove 2; the bottom of the elastic cloth 3 is connected to the slider 16; the slider 16 is wrapped in the middle of the support rod 11; by providing the elastic cloth 3 in the middle of the support rod 11, the slider 16 can expand and contract by itself when sliding up and down in the middle of the support rod 11; this arrangement can reduce the problem of debris falling into the middle of the support rod 11 during the welding process of the centrifugal fan blade base plate, which affects the sliding of the slider 16, and improve the stability of the slider 16 when sliding in the middle of the support rod 11.

[0027] like Figure 4 As shown, the support block 12 is fixedly connected to a bracket 4 on the top; a water spray ring 41 is fixedly connected to the end of the bracket 4; a plurality of water spray holes 42 are opened on the side wall of the water spray ring 41; a water pipe 43 is connected to the side wall of the water spray ring 41; by providing a water spray ring 41 on the top of the support block 12, the end of the water pipe 43 can be connected to the water pump when in use. At this time, the water pump can transport the liquid to the inside of the water spray ring 41 through the water pipe 43, and then spray it out from the water spray holes 42 to flush the bottom plate of the centrifugal fan blades and reduce the residual welding slag on the bottom plate of the centrifugal fan blades. At the same time, the liquid sprayed from the water spray holes 42 can flush the telescopic rod 13 and reduce the welding slag on the telescopic rod 13 to ensure the stable extension and retraction of the telescopic rod 13.

[0028] like Figure 4 As shown, the top of the water spray ring 41 is fixedly connected to the air jet ring 5; the side wall of the air jet ring 5 is provided with a plurality of air jet holes 51; the middle of the air jet ring 5 is connected to the air supply pipe 52; by providing the air jet ring 5 on the top of the water spray ring 41, it is necessary to connect the end of the air supply pipe 52 to the air pump before use, and then the air pump can transport the gas to the inside of the air jet ring 5 through the air supply pipe 52, and then spray it out from the air jet holes 51. At this time, the sprayed gas can further blow off the welding slag on the bottom plate of the centrifugal fan blade, and at the same time can increase the coverage area of ​​the liquid sprayed from the water spray hole 42, and at the same time increase the cooling effect during welding.

[0029] like Figure 4 As shown, a tray 6 is fixedly connected to the top of the support block 12; the tray 6 is located at the bottom of the water spray ring 41; by providing the tray 6 on the top of the support block 12, the sprayed liquid and gas can be guided when the water spray ring 41 and the air jet ring 5 are used, thereby achieving effective utilization of the sprayed gas and liquid.

[0030] The working principle is to first control the electric push rod 17 to retract, and then through the sliding of the slider 16, the push rod 15 can pull the top block 14. At this time, the telescopic rod 13 retracts synchronously, and then the bottom plate hole of the centrifugal fan blade to be welded is placed around the top block 14. At this time, the electric push rod 17 can be controlled to extend, and the slider 16 is pushed upward on the support rod 11. At this time, the push rod 15 can push the top block 14 to move to the middle hole of the blade bottom plate, so that the side wall of the top block 14 contacts the hole of the blade bottom plate, thereby achieving fixed clamping of the blade bottom plate; when the centrifugal fan blade bottom plate is squeezed and clamped from the inside to the outside by using the top block 14, the end of the limit plate 21 will first contact the inner diameter of the hole of the centrifugal fan blade bottom plate. At this time, the limit plate 21 in contact with the inner diameter of the bottom plate hole can move toward the cavity 23 The inner portion of the support block 12 moves, and at the same time, the inner spring 22 is compressed, and the remaining limit plate 21 maintains its original position, limiting the bottom plate of the centrifugal fan blade. By providing an elastic cloth 3 in the middle of the support rod 11, the slider 16 can automatically expand and contract when sliding up and down in the middle of the support rod 11; by providing a water spray ring 41 on the top of the support block 12, the end of the water pipe 43 can be connected to the water pump when in use. At this time, the water pump can transport the liquid to the inside of the water spray ring 41 through the water pipe 43, and then spray it out from the water spray hole 42 to achieve flushing of the bottom plate of the centrifugal fan blade, reducing the residual welding slag on the bottom plate of the centrifugal fan blade. At the same time, the spray liquid from the water spray hole 42 can flush the telescopic rod 13, reducing the welding slag on the telescopic rod 13, so as to ensure the stable extension and retraction of the telescopic rod 13. By providing an air jet ring 5 on the top of the water spray ring 41, it is necessary to connect the end of the air supply pipe 52 to the air pump before use. Then the air pump can transport the gas to the inside of the air jet ring 5 through the air supply pipe 52, and then spray it out from the air jet hole 51. At this time, the sprayed gas can further blow off the welding slag on the bottom plate of the centrifugal fan blade, and at the same time increase the coverage area of ​​the liquid sprayed from the water spray hole 42. By providing a tray 6 on the top of the support block 12, it can guide the sprayed liquid and gas when the water spray ring 41 and the air jet ring 5 are in use, thereby realizing effective utilization of the sprayed gas and liquid.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugal fan welding fixture, characterized by: The invention comprises a base (1); a support rod (11) is fixedly connected to the top of the base (1); a support block (12) is fixedly connected to the top of the support rod (11); a plurality of telescopic rods (13) are fixedly connected to the side wall of the support block (12); the end of the telescopic rod (13) is fixedly connected to a top block (14); a top rod (15) is hingedly connected to the bottom of the top block (14); a slider (16) is hingedly connected to the bottom of the top rod (15); the support rod (11) and the slider (16) are in sliding engagement; an electric push rod (17) is fixedly connected to the top of the base (1); and the output end of the electric push rod (17) is fixedly connected to the slider (16).

2. The centrifugal fan welding fixture according to claim 1, characterized in that: A cavity (23) is provided inside the top block (14); a plurality of through slots (2) are provided on the side wall of the top block (14); a limit plate (21) is slidably connected inside the through slot (2); a spring (22) is fixed to the side wall of the limit plate (21); and the other end of the spring (22) is connected to the inner side wall of the cavity (23).

3. The centrifugal fan welding fixture according to claim 2, characterized in that: An elastic cloth (3) is fixed to the bottom of the through groove (2); the bottom of the elastic cloth (3) is connected to a slider (16); and the slider (16) is wrapped around the middle of the support rod (11).

4. The centrifugal fan welding fixture according to claim 3, characterized in that: The top of the support block (12) is fixedly connected to a bracket (4); the end of the bracket (4) is fixedly connected to a water spray ring (41); a plurality of water spray holes (42) are opened on the side wall of the water spray ring (41); and the side wall of the water spray ring (41) is connected to a water pipe (43).

5. The centrifugal fan welding fixture according to claim 4, characterized in that: The top of the water spray ring (41) is fixedly connected to an air jet ring (5); a plurality of air jet holes (51) are opened on the side wall of the air jet ring (5); and the middle of the air jet ring (5) is connected to an air delivery pipe (52).

6. The centrifugal fan welding fixture according to claim 5, characterized in that: A tray (6) is fixedly connected to the top of the support block (12); the tray (6) is located at the bottom of the water spray ring (41).

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