Welding fixture for engine test section assembly

Abstract

The utility model provides an engine test section assembly welding fixture, and relates to the technical field of welding fixtures, the engine test section assembly welding fixture comprises a base, one side of the base is provided with a positioning device, one side of the base is provided with an adjusting device, the positioning device comprises a mandrel screw, the mandrel screw is fixedly connected with the base, and the adjusting device is connected with the mandrel screw. The positioning device comprises a base, a mandrel screw is arranged on the base, the surface of the mandrel screw is in threaded connection with a nut, the surface of the mandrel screw is sleeved with a conical ring, the surface of the nut is larger than the inner wall of the conical ring, and the side, close to the mandrel screw, of the base is fixedly connected with a limiting frame. The situation that positioning is difficult due to the fact that the parts are irregular in shape and complex in combination structure is reduced, convenience and adaptability are improved when personnel position the parts of different sizes and shapes, and then production efficiency is improved, production cost is reduced, and the part production cycle is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of welding fixtures, in particular to a welding fixture for an engine test section assembly. Background Art

[0002] When producing a certain type of engine, it is crucial to obtain accurate test data in the early stage of the engine, which is crucial for the subsequent optimization and improvement of the design. Some parts are used to install various test joints. The temperature at the engine outlet is high and the vibration is large. Whether the height and angle of the center hole of the mounting seat can meet the requirements of the drawing determines whether accurate engine performance data can be obtained during the test phase. In order to ensure scientific research and production tasks, welding fixtures are often needed to assist personnel in positioning this component.

[0003] Since the part is composed of a large-sized thin-plate drawn part and 14 machined parts, and the part has an irregular shape and a complex combined structure, and the structural welding deformation of the part is large, it is not suitable for component machining, so it is urgent to design a set of welding fixtures. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a welding fixture for an engine test section assembly.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an engine test section assembly welding fixture comprises a base, a positioning device is provided on one side of the base, an adjusting device is provided on one side of the base, the positioning device comprises a core shaft screw, the core shaft screw is fixedly connected to the base, a nut is threadedly connected to the surface of the core shaft screw, a conical ring is sleeved on the surface of the core shaft screw, the surface of the nut is larger than the inner wall of the conical ring, a side of the base close to the core shaft screw is fixedly connected to a limiting frame, the inner wall of the limiting frame is slidably connected to a push rod, one end surface of the push rod is fitted with the surface of the conical ring, the end surface of the push rod fitting with the conical ring is conical, and the end of the push rod away from the core shaft screw is fixedly connected to a first expansion block.

[0006] The effect achieved by the above-mentioned components is as follows: by setting the positioning device, first, the part is manually placed flat on the base so that the first expansion block is located inside the part. At this time, the nut is rotated by the tool to make the nut move up and down along the surface of the core shaft screw, so that the nut moves toward the push rod by moving the extruded conical ring, so that the conical ring extrudes the push rod, and under the limiting action of the limit frame on the push rod, the conical ring extrudes the push rod to move the push rod away from the core shaft screw, so that the push rod drives the first expansion block to move away from the core shaft screw. When the first expansion block moves to the position of extruding the inner wall of the part, the rapid positioning of the part is completed, and then the first expansion block can quickly position parts of different shapes and sizes by moving left and right and extruding the inner wall of the part, reducing the situation where positioning is difficult due to irregular shape of parts and complex combination structure, and improving the convenience and adaptability of personnel in positioning parts of different sizes and shapes.

[0007] Preferably, a rectangular groove is provided on one side of the push rod close to the base, a baffle is slidably connected to the inner wall of the rectangular groove, the baffle is fixedly connected to the base, a spring is fixedly connected to one side of the baffle, and the other end of the spring is fixedly connected to the inner wall of the rectangular groove.

[0008] The effect achieved by the above components is: by setting the spring and the baffle, under the limiting action of the baffle, the spring is squeezed when the push rod moves away from the core shaft screw. Under the reaction force of the spring, when the conical ring releases the extrusion limit on the push rod, the spring can drive the push rod to reset and move, thereby improving convenience of use.

[0009] Preferably, the inner wall of the first expansion block is slidably connected to the second expansion block, a first threaded hole is opened on one side of the first expansion block, a second bolt is threadedly connected to the inner wall of the first threaded hole, a circular groove is opened on one side of the second expansion block, the surface size and shape of the second bolt are adapted to the size and shape of the inner wall of the circular groove, and the first expansion block and the second expansion block are connected by a concave-convex structure.

[0010] The effect achieved by the above-mentioned components is: by connecting the first expansion block and the second expansion block with a convex and concave structure, the material cost can be reduced, the service life of the tooling can be increased, and the weld can be better protected. At the same time, the second expansion block can be taken out and replaced with an accessory with the same material as the part, so that it can be used for heat treatment tooling, which can achieve dual purposes and save manufacturing expenses and costs.

[0011] Preferably, a first bolt is threadedly connected to one side of the base, a pressure plate is sleeved on the surface of the first bolt, and a nut position of the first bolt is larger than an inner wall of the pressure plate.

[0012] The effect achieved by the above components is: by setting the pressure plate, first manually move the pressure plate so that the pressure plate moves along the surface of the first bolt, and when the pressure plate moves to a position that fits the surface of the part, the first bolt is rotated by a tool so that the first bolt squeezes the pressure plate and limits the pressure plate, so that the pressure plate assists in limiting the part, so that the part can be quickly positioned when it is placed flat on the base.

[0013] Preferably, a lifting ear is fixedly connected to one side of the base, and the surface of the lifting ear is annular.

[0014] The effect achieved by the above components is: by setting the lifting lugs, personnel can connect external lifting equipment to the lifting lugs and move the base through the lifting lugs, thereby improving the convenience of moving the base.

[0015] Preferably, the adjustment device includes a second threaded hole opened on one side of the base, the inner wall of the second threaded hole is threadedly connected to a threaded rod, one end of the threaded rod is fixedly connected to an operating block, and the end of the threaded rod away from the operating block is rotatably connected to a circular plate.

[0016] The effect achieved by the above-mentioned components is: by setting the adjustment device, first, the personnel can support and place the base through the threaded rod and the base, and then manually rotate the operating block to make the operating block drive the threaded rod to rotate, and under the action of the circular plate and the ground or table top, the threaded rod drives the base to move up and down through the second threaded hole, and when the base is moved to the appropriate position, the adjustment support of the base is completed, which reduces the shaking of the base when it is placed on an uneven table top or ground, and improves the convenience of personnel in adjusting the placement height of the base.

[0017] Preferably, a plurality of anti-sliding blocks are fixedly connected to one side of the circular plate, and the plurality of anti-sliding blocks are arranged at equal distances.

[0018] The effect achieved by the above components is: by arranging the anti-sliding block, the anti-sliding block can increase the contact friction between the circular plate and the ground or the table top, and reduce the sliding of the circular plate when supporting the base.

[0019] Preferably, a plurality of auxiliary rods are fixedly connected to the surface of the operating block, and the surface of the auxiliary rods is rectangular.

[0020] The effect achieved by the above components is: by setting the auxiliary rod, a person can drive the operating block to rotate quickly by manually rotating the auxiliary rod, thereby improving the convenience of manually rotating the threaded rod.

[0021] Compared with the prior art, the advantages and positive effects of the utility model are:

[0022] In the utility model, by setting a positioning device, parts of different shapes and sizes can be quickly positioned, reducing the situation where positioning difficulties are caused by irregular shapes of parts and complex combination structures, and improving the convenience and adaptability of personnel in positioning parts of different sizes and shapes, thereby improving production efficiency, reducing production costs, and shortening the part production cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 It is a partial cross-sectional view of the top rod of the utility model;

[0025] Figure 3 For this utility model Figure 1 A partial structural diagram of

[0026] Figure 4 It is a schematic diagram of the local structure of the circular plate of the utility model.

[0027] Legend: 1. Base; 2. Positioning device; 21. Mandrel screw; 22. Nut; 23. Conical ring; 24. Limiting frame; 25. First bolt; 26. Pressure plate; 27. Lifting ear; 28. Push rod; 29. ​​First expansion block; 210. Second expansion block; 211. First threaded hole; 212. Second bolt; 213. Circular groove; 214. Rectangular groove; 215. Baffle; 216. Spring; 3. Adjusting device; 31. Second threaded hole; 32. Threaded rod; 33. Operating block; 34. Round plate; 35. Anti-sliding block; 36. Auxiliary rod. DETAILED DESCRIPTION

[0028] Reference Figure 1-3As shown, this embodiment discloses an engine test section assembly welding fixture, including a base 1, a positioning device 2 is provided on one side of the base 1, an adjusting device 3 is provided on one side of the base 1, the positioning device 2 includes a core shaft screw 21, the core shaft screw 21 is fixedly connected to the base 1, a nut 22 is threadedly connected to the surface of the core shaft screw 21, a conical ring 23 is sleeved on the surface of the core shaft screw 21, the surface of the nut 22 is larger than the inner wall of the conical ring 23, a side of the base 1 close to the core shaft screw 21 is fixedly connected to a limiting frame 24, the inner wall of the limiting frame 24 is slidably connected to a push rod 28, one end surface of the push rod 28 is fitted with the surface of the conical ring 23, the end surface of the push rod 28 fitting with the conical ring 23 is conical, and the end of the push rod 28 away from the core shaft screw 21 is fixedly connected to a first expansion block 29, by setting the positioning device 2, firstly manually place the part flat on the base 1 so that the first expansion block 29 is in the Inside the part, the nut 22 is rotated by a tool at this time, so that the nut 22 moves up and down along the surface of the core shaft screw 21, so that the nut 22 moves toward the push rod 28 by moving and extruding the conical ring 23, so that the conical ring 23 squeezes the push rod 28, and under the limiting action of the limit frame 24 on the push rod 28, the conical ring 23 squeezes the push rod 28 to move the push rod 28 away from the core shaft screw 21, so that the push rod 28 drives the first expansion block 29 to move away from the core shaft screw 21. When the first expansion block 29 moves to the position of extruding the inner wall of the part, the rapid positioning of the part is completed, and then the first expansion block 29 can quickly position parts of different shapes and sizes by moving left and right and squeezing the inner wall of the part, reducing the situation where the positioning is difficult due to the irregular shape of the part and the complex combination structure, and improving the convenience and adaptability of personnel in positioning parts of different sizes and shapes.

[0029] Reference Figure 2 and Figure 3As shown, the present embodiment discloses that a rectangular groove 214 is provided on one side of the push rod 28 close to the base 1, and a baffle 215 is slidably connected to the inner wall of the rectangular groove 214, and the baffle 215 is fixedly connected to the base 1, and a spring 216 is fixedly connected to one side of the baffle 215, and the other end of the spring 216 is fixedly connected to the inner wall of the rectangular groove 214. By arranging the spring 216 and the baffle 215, under the limiting action of the baffle 215, the spring 216 is squeezed when the push rod 28 moves away from the core shaft screw 21. Under the reaction force of the spring 216, when the conical ring 23 releases the squeezing limit on the push rod 28, the spring 216 can drive the push rod 28 to reset and move, thereby improving the convenience of use. The inner wall of the first expansion block 29 is slidably connected There is a second expansion block 210, a first threaded hole 211 is opened on one side of the first expansion block 29, the inner wall of the first threaded hole 211 is threadedly connected with a second bolt 212, a circular groove 213 is opened on one side of the second expansion block 210, the surface size and shape of the second bolt 212 are adapted to the size and shape of the inner wall of the circular groove 213, the first expansion block 29 and the second expansion block 210 are connected by a concave-convex structure, and by connecting the first expansion block 29 and the second expansion block 210 by a convex-concave structure, the material cost can be reduced, the service life of the tooling can be increased, and the weld can be better protected. At the same time, the second expansion block 210 can be taken out and replaced with an accessory with the same material as the part, so that it can be used for heat treatment tooling, which can be used for two purposes in one device and save manufacturing expenses and costs.

[0030] Reference Figure 2 and Figure 3 As shown, this embodiment discloses that a first bolt 25 is threadedly connected to one side of the base 1, and a pressure plate 26 is sleeved on the surface of the first bolt 25. The nut position of the first bolt 25 is larger than the inner wall of the pressure plate 26. By setting the pressure plate 26, the pressure plate 26 is first manually moved so that the pressure plate 26 moves along the surface of the first bolt 25. When the pressure plate 26 moves to a position that fits the surface of the part, the first bolt 25 is rotated by a tool so that the first bolt 25 squeezes the pressure plate 26 and limits the pressure plate 26, so that the pressure plate 26 assists in limiting the part, so that the part can be quickly positioned when it is placed flat on the base 1. A lifting ear 27 is fixedly connected to one side of the base 1, and the surface of the lifting ear 27 is annular. By setting the lifting ear 27, personnel can connect external lifting equipment to the lifting ear 27 and move the base 1 through the lifting ear 27, thereby improving the convenience of moving the base 1.

[0031] Reference Figure 3 and Figure 4As shown, this embodiment discloses that the adjusting device 3 includes a second threaded hole 31 opened on one side of the base 1, and the inner wall of the second threaded hole 31 is threadedly connected with a threaded rod 32, one end of the threaded rod 32 is fixedly connected with an operating block 33, and the end of the threaded rod 32 away from the operating block 33 is rotatably connected with a circular plate 34. By setting the adjusting device 3, firstly, the base 1 can be supported and placed by the threaded rod 32 and the base 1, and at this time, the operating block 33 is manually rotated so that the operating block 33 drives the threaded rod 32 to rotate, and under the action of the circular plate 34 and the ground or table top, the threaded rod 32 drives the base 1 to move up and down through the second threaded hole 31. When the base 1 is moved to an appropriate position, the adjustment support of the base 1 is completed, thereby reducing the shaking of the base 1 when it is placed on an uneven table top or ground, and improving the convenience of personnel in adjusting the placement height of the base 1.

[0032] Reference Figure 3 and Figure 4 As shown, the present embodiment discloses that a plurality of anti-slip blocks 35 are fixedly connected to one side of the circular plate 34, and the plurality of anti-slip blocks 35 are arranged at equal distances. By setting the anti-slip blocks 35, the anti-slip blocks 35 can increase the contact friction between the circular plate 34 and the ground or the table top, and reduce the sliding of the circular plate 34 when supporting the base 1. A plurality of auxiliary rods 36 are fixedly connected to the surface of the operating block 33, and the surface of the auxiliary rods 36 is rectangular. By setting the auxiliary rods 36, a person can drive the operating block 33 to rotate quickly by manually rotating the auxiliary rods 36, thereby improving the convenience of manually rotating the threaded rod 32.

[0033] Working principle: First, manually move the second expansion block 210. When the second expansion block 210 moves to the position of being inserted into the internal position of the first expansion block 29, the inner wall of the first threaded hole 211 coincides with the inner wall of the circular groove 213. At this time, the second bolt 212 is rotated by a tool so that the second bolt 212 is rotated into the first threaded hole 211 and the internal position of the circular groove 213 to fix the second expansion block 210, completing the connection and fixation of the first expansion block 29 and the second expansion block 210. At this time, place the part flat on the base 1 so that the first expansion block 29 is located inside the part. At this time, move the pressure plate 26 left and right so that the pressure plate 26 moves along the surface of the first bolt 25. When the pressure plate 26 moves to a position that fits the surface of the part, the first bolt 25 is rotated by a tool so that The first bolt 25 squeezes the pressure plate 26 and limits the pressure plate 26, so that the pressure plate 26 assists in limiting the outside of the part. At this time, the nut 22 is rotated by a tool to make the nut 22 move up and down along the surface of the core shaft screw 21, so that the nut 22 moves toward the push rod 28 by moving and squeezing the conical ring 23, so that the conical ring 23 squeezes the push rod 28. Under the limiting effect of the limiting frame 24 on the push rod 28, the conical ring 23 squeezes the push rod 28 and moves the push rod 28 away from the core shaft screw 21, so that the push rod 28 drives the first expansion block 29 and the second expansion block 210 to move away from the core shaft screw 21. When the first expansion block 29 and the second expansion block 210 move to the position of squeezing the inner wall of the part, the rapid positioning of the part is completed.

[0034] First, the personnel can support and place the base 1 through the threaded rod 32 and the base 1, and then manually rotate the auxiliary rod 36 so that the auxiliary rod 36 drives the operating block 33 to rotate, and the operating block 33 drives the threaded rod 32 to rotate. Under the action of the circular plate 34 and the ground or the table top, the threaded rod 32 drives the base 1 to move up and down through the second threaded hole 31. When the base 1 moves to the appropriate position, the adjustment support of the base 1 is completed.

[0035] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

Claims

1. Engine test section assembly welding fixture, characterized by: The invention comprises a base (1), a positioning device (2) is arranged on one side of the base (1), an adjusting device (3) is arranged on one side of the base (1), the positioning device (2) comprises a spindle screw (21), the spindle screw (21) is fixedly connected to the base (1), a nut (22) is threadedly connected to the surface of the spindle screw (21), a conical ring (23) is sleeved on the surface of the spindle screw (21), the surface of the nut (22) is larger than the inner wall of the conical ring (23), a side of the base (1) close to the spindle screw (21) is fixedly connected to a limiting frame (24), the inner wall of the limiting frame (24) is slidably connected to a push rod (28), one end surface of the push rod (28) is in contact with the surface of the conical ring (23), the contacting end surfaces of the push rod (28) and the conical ring (23) are conical, and one end of the push rod (28) away from the spindle screw (21) is fixedly connected to a first expansion block (29).

2. The engine test section assembly welding fixture according to claim 1, characterized in that: A rectangular groove (214) is formed on a side of the top rod (28) close to the base (1); a baffle (215) is slidably connected to the inner wall of the rectangular groove (214); the baffle (215) is fixedly connected to the base (1); a spring (216) is fixedly connected to one side of the baffle (215); the other end of the spring (216) is fixedly connected to the inner wall of the rectangular groove (214).

3. The welding fixture for the engine test section assembly according to claim 2, characterized in that: The inner wall of the first expansion block (29) is slidably connected to the second expansion block (210); a first threaded hole (211) is provided on one side of the first expansion block (29); a second bolt (212) is threadedly connected to the inner wall of the first threaded hole (211); a circular groove (213) is provided on one side of the second expansion block (210); the surface size and shape of the second bolt (212) are matched with the size and shape of the inner wall of the circular groove (213); and the first expansion block (29) and the second expansion block (210) are connected by a concave-convex structure.

4. The welding fixture for the engine test section assembly according to claim 3, characterized in that: A first bolt (25) is threadedly connected to one side of the base (1), a pressing plate (26) is sleeved on the surface of the first bolt (25), and a nut of the first bolt (25) is larger than an inner wall of the pressing plate (26).

5. The welding fixture for the engine test section assembly according to claim 4, characterized in that: A lifting ear (27) is fixedly connected to one side of the base (1), and the surface of the lifting ear (27) is annular.

6. The welding fixture for the engine test section assembly according to claim 1, characterized in that: The adjusting device (3) comprises a second threaded hole (31) formed on one side of the base (1); a threaded rod (32) is threadedly connected to the inner wall of the second threaded hole (31); one end of the threaded rod (32) is fixedly connected to an operating block (33); and one end of the threaded rod (32) away from the operating block (33) is rotatably connected to a circular plate (34).

7. The welding fixture for the engine test section assembly according to claim 6, characterized in that: A plurality of anti-sliding blocks (35) are fixedly connected to one side of the circular plate (34), and the plurality of anti-sliding blocks (35) are arranged at equal distances.

8. The welding fixture for the engine test section assembly according to claim 6, characterized in that: A plurality of auxiliary rods (36) are fixedly connected to the surface of the operating block (33), and the surfaces of the auxiliary rods (36) are rectangular.

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