A bearing block assembly welding fixture and method of use

Abstract

A bearing seat assembly welding fixing device belongs to the technical field of welding fixing tooling. The base is inserted with the front sealing product, and the middle part is screwed with the lower end of the middle shaft rod. The middle shaft rod has a center pressing plate and a nut. The center pressing plate is pressed with the front sealing product, the nut is arranged on the upper end of the center pressing plate and is screwed with the middle shaft rod, the positioning sleeve is attached to the end face of the bearing seat, the high-precision auxiliary positioning diameter of the positioning sleeve is matched with the gap between the oil cavity outer wall rear product in the bearing seat assembly, the outer end of the positioning sleeve is provided with at least two groups of outer pressing plate assemblies, and the outer pressing plate assemblies are used for pressing the bearing seat. The inner end of the positioning sleeve is provided with at least two groups of inner pressing plate assemblies, and the inner pressing plate assemblies are used for pressing the oil cavity outer wall rear product. The present application realizes the accurate positioning between parts, avoids the risk of operator scalding caused by high temperature in the welding process, ensures that the welding position can be fully protected by argon, and improves the welding precision, safety and production efficiency of the bearing seat assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to a bearing seat assembly welding fixing device and its use method, belonging to the technical field of welding fixing tooling. BACKGROUND

[0002] In the manufacturing process of bearing seat assemblies, steps such as assembly, welding, fluorescent inspection, X-ray inspection, aging treatment, nickel graphite coating spraying, washing and sealing test are involved to ensure the precision, quality and reliability of the assembly. However, in the current production process, especially in the welding link, the existing welding equipment has obvious deficiencies in automatic positioning of parts. This means that during the assembly process, operators need to manually align and adjust the positions of various parts, which not only consumes time and effort, but also makes it difficult to ensure high-precision fitting between parts, thereby affecting the performance and stability of the final product.

[0003] Secondly, the high temperature generated during the welding process is an important safety and production efficiency obstacle. Due to the extremely high temperature in the welding area, operators cannot directly fix the parts for a long time with their hands, which not only increases the operation difficulty, but also may cause welding defects such as discontinuous welds, misalignment, etc. due to the deviation of the position of the parts.

[0004] Furthermore, for welding positions that require argon gas protection, existing equipment and technology are difficult to effectively cope with the limitations of product structure. Especially in bearing seat assemblies with complex structure or narrow space, the lack of appropriate auxiliary devices makes it extremely difficult to provide argon gas protection, thereby increasing the risk of oxidation and contamination during the welding process.

[0005] Finally, the parts in the bearing seat assembly often have strict relative position and distance requirements. Without special auxiliary positioning equipment, it is difficult to ensure that these requirements are met. This not only may cause the assembled assembly to not meet the design requirements, but also may cause running failures or safety hazards due to assembly errors. SUMMARY

[0006] To solve the problems in the background art, the present application provides a bearing seat assembly welding fixing device and its use method.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a fixing device for welding bearing housing assembly, comprising a base, a central shaft, a first nut, a central pressure plate, a second nut, a positioning sleeve, an inner pressure plate assembly, and an outer pressure plate assembly; the high-precision positioning surface of the base is inserted into the front sealing product in the bearing housing assembly, and the middle part of the base is threadedly engaged with the lower end of the vertically arranged central shaft and locked by the first nut; the outer side of the central shaft is fitted with the central pressure plate and the second nut, the high-precision surface of the central pressure plate is pressed against the front sealing product, the second nut is fitted against the upper end of the central pressure plate and threadedly engaged with the central shaft, the high-precision positioning surface of the positioning sleeve is fitted against the end face of the bearing housing in the bearing housing assembly, the high-precision auxiliary positioning diameter of the positioning sleeve is clearance-fitted with the rear section of the outer wall of the oil cavity in the bearing housing assembly, the outer end of the positioning sleeve is provided with at least two sets of outer pressure plate assemblies, the outer pressure plate assemblies are used to press the bearing housing; the inner end of the positioning sleeve is provided with at least two sets of inner pressure plate assemblies, the inner pressure plate assemblies are used to press the rear section of the outer wall of the oil cavity.

[0008] Each set of external pressure plate assemblies includes an external pressure plate and a bolt; the lower end face of the positioning sleeve is threadedly connected to the upper end of the vertically arranged bolt, the lower end of the bolt is inserted into the waist-shaped hole of the external pressure plate, and the inner end of the external pressure plate is pressed and set on the bearing seat.

[0009] Each of the external pressure plate assemblies also includes a cylindrical pin, which is vertically inserted into the lower end face of the positioning sleeve, and the outer end of the external pressure plate is inserted into the cylindrical pin.

[0010] Each set of inner pressure plate assemblies includes an inner pressure plate, a support, a third nut, and a second bolt. The inner end face of the positioning sleeve is threadedly fixed to the support and the second bolt. The upper end of the second bolt is inserted into the waist-shaped hole of the inner pressure plate. The upper end of the second bolt is threadedly connected to the third nut. The third nut is pressed on the upper end of the inner pressure plate. The outer end of the inner pressure plate is slidably connected to the upper end of the support. The inner end of the inner pressure plate is pressed tightly onto the rear section of the product on the outer wall of the oil cavity.

[0011] The positioning sleeve is provided with a vent hole that communicates with the rear section of the outer wall of the oil cavity and the bearing seat, and a guide tube is inserted into the vent hole with an interference fit.

[0012] A method of using a fixing device for welding bearing housing assembly according to the present invention includes the following steps:

[0013] S1: Insert the lower end of the front sealing product into the base;

[0014] S2: After installing the center pressure plate, rotate nut two to tighten the center pressure plate and seal the product;

[0015] S3: Place the positioning sleeve inside the bearing housing assembly;

[0016] S4: Press and position the bearing seat by the external pressure plate assembly;

[0017] S5: The product at the rear end of the positioning oil cavity is pressed and positioned by the inner pressure plate assembly;

[0018] S6: Weld the bearing housing assembly.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] This invention achieves precise positioning between various parts through a precisely designed base, central shaft, pressure plate assembly, and positioning sleeve, avoiding the risk of operator burns due to high temperatures during welding, while ensuring that the welding position is adequately protected by argon gas, thereby significantly improving the welding accuracy, safety, and production efficiency of the bearing housing assembly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] A fixing device for welding bearing housing assemblies includes a base 1, a central shaft 2, a first nut 3, a central pressure plate 4, a second nut 6, a positioning sleeve 13, an inner pressure plate assembly, and an outer pressure plate assembly. The high-precision positioning surface of the base 1 is inserted into the front seal product in the bearing housing assembly for positioning and centering the front seal product. The middle part of the base 1 is threadedly engaged with the lower end of the vertically arranged central shaft 2 and locked by the first nut 3. The central pressure plate 4 and the second nut 6 are fitted onto the outer side of the central shaft 2. The high-precision surface of the central pressure plate 4 is pressed against the front seal product, providing a pressing effect. The second nut 6 is fitted against the upper end of the central pressure plate 4 and threadedly engaged with the central shaft 2. Rotating the first nut 6 pushes the central pressure plate 4 forward. Both the base 1 and the central pressure plate 4 are provided with weight-reducing holes. The high-precision positioning surface of the positioning sleeve 13 is fitted to the end face of the bearing seat in the bearing seat assembly for positioning and centering the bearing seat; the high-precision auxiliary positioning diameter of the positioning sleeve 13 is clearance-fitted with the rear section of the outer wall of the oil cavity in the bearing seat assembly for rough positioning of the rear section of the outer wall of the oil cavity; the outer end of the positioning sleeve 13 is provided with at least two sets of outer pressure plate assemblies for pressing the bearing seat; the inner end of the positioning sleeve 13 is provided with at least two sets of inner pressure plate assemblies for pressing the rear section of the outer wall of the oil cavity.

[0024] Each set of external pressure plate assemblies includes an external pressure plate 15 and a bolt 16; the lower end face of the positioning sleeve 13 is threadedly connected to the upper end of the vertically arranged bolt 16, and the lower end of the bolt 16 is inserted into the oblong hole of the external pressure plate 15, with the inner end of the external pressure plate 15 pressed against the bearing seat. When the bolt 16 is tightened, it drives the external pressure plate 15 to press against the bearing seat.

[0025] Each of the external pressure plate assemblies also includes a cylindrical pin 18, which is vertically inserted into the lower end face of the positioning sleeve 13. The outer end of the external pressure plate 15 is inserted into the cylindrical pin 18, and the cylindrical pin 18 serves to limit the placement position of the external pressure plate 15.

[0026] Each set of inner pressure plate assemblies includes an inner pressure plate 7, a support 8, a nut 9, and a bolt 11. The inner end face of the positioning sleeve 13 is threadedly fixed to the support 8 and the bolt 11. The upper end of the bolt 11 is inserted into the oblong hole of the inner pressure plate 7, and the upper end of the bolt 11 is threadedly connected to the nut 9. The nut 9 is pressed onto the upper end of the inner pressure plate 7. The outer end of the inner pressure plate 7 is slidably connected to the upper end of the support 8. The inner end of the inner pressure plate 7 is pressed against the rear section of the product on the outer wall of the oil cavity. When the nut 9 is tightened on the bolt 11, it drives the inner pressure plate 7 to move downward, thus pressing against the rear section of the product on the outer wall of the oil cavity.

[0027] The positioning sleeve 13 is provided with a vent hole that communicates with the rear section of the outer wall of the oil cavity and the bearing seat. A conduit 14 is inserted into the vent hole to form a closed cavity. Argon gas enters the closed cavity through the conduit 14 to protect the welding position.

[0028] Washers are provided between nut 2 6 and the central pressure plate 4, between bolt 1 16 and the outer pressure plate 15, and between nut 3 9 and the inner pressure plate 7.

[0029] A method of using a fixing device for welding bearing housing assembly according to the present invention includes the following steps:

[0030] S1: Insert the lower end of the front sealing product into the base 1;

[0031] S2: After installing the center pressure plate 4, rotate nut 26 to tighten the center pressure plate 4 and seal the front seal; Product

[0032] S3: Place the positioning sleeve 13 inside the bearing housing assembly;

[0033] S4: Press and position the bearing seat by the external pressure plate assembly;

[0034] S5: The product at the rear end of the positioning oil cavity is pressed and positioned by the inner pressure plate assembly;

[0035] S6: Weld the bearing housing assembly.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fixing device for welding bearing housing assemblies, characterized in that: The assembly includes a base (1), a central shaft (2), a first nut (3), a central pressure plate (4), a second nut (6), a positioning sleeve (13), an inner pressure plate assembly, and an outer pressure plate assembly. The high-precision positioning surface of the base (1) is inserted into the front seal product in the bearing seat assembly. The middle part of the base (1) is threaded into the lower end of the vertically arranged central shaft (2) and locked by the first nut (3). The outer side of the central shaft (2) is fitted with a central pressure plate (4) and a second nut (6). The high-precision surface of the central pressure plate (4) is pressed against the front seal product. The nut (6) is fitted onto the upper end of the central pressure plate (4) and threadedly connected to the central shaft (2). The high-precision positioning surface of the positioning sleeve (13) is fitted onto the end face of the bearing seat in the bearing seat assembly. The high-precision auxiliary positioning diameter of the positioning sleeve (13) is clearance-fitted with the rear section of the outer wall of the oil cavity in the bearing seat assembly. The outer end of the positioning sleeve (13) is provided with at least two sets of outer pressure plate assemblies, which are used to press the bearing seat. The inner end of the positioning sleeve (13) is provided with at least two sets of inner pressure plate assemblies, which are used to press the oil cavity. The outer wall rear section product; each set of the outer pressure plate assembly includes an outer pressure plate (15) and a bolt (16); the lower end face of the positioning sleeve (13) is threadedly connected to the upper end of the vertically arranged bolt (16), the lower end of the bolt (16) is inserted into the oblong hole of the outer pressure plate (15), and the inner end of the outer pressure plate (15) is pressed against the bearing seat; each set of the inner pressure plate assembly includes an inner pressure plate (7), a support (8), a nut (9) and a bolt (11); the inner end face of the positioning sleeve (13) is connected to the support (8) and the bolt (11) (11) All are fixed by threaded connection. The upper end of the second bolt (11) is inserted into the waist-shaped hole of the inner pressure plate (7). The upper end of the second bolt (11) is threadedly connected to the third nut (9). The third nut (9) is pressed on the upper end of the inner pressure plate (7). The outer end of the inner pressure plate (7) is slidably connected to the upper end of the support (8). The inner end of the inner pressure plate (7) is pressed tightly on the rear section of the oil cavity outer wall product. The positioning sleeve (13) is provided with a vent hole that communicates with the rear section of the oil cavity outer wall product and the bearing seat. A guide tube (14) is inserted into the vent hole by interference fit.

2. The fixing device for welding bearing housing assembly according to claim 1, characterized in that: Each of the external pressure plate assemblies also includes a cylindrical pin (18), which is vertically inserted into the lower end face of the positioning sleeve (13), and the outer end of the external pressure plate (15) is inserted into the cylindrical pin (18).

3. A method of using the fixing device for welding bearing housing assembly according to any one of claims 1-2, characterized in that: The method includes the following steps: S1: Insert the lower end of the front sealing product into the base (1); S2: After installing the center pressure plate (4), rotate nut two (6) to press the center pressure plate (4) against the front sealing product; S3: Place the positioning sleeve (13) inside the bearing housing assembly; S4: Press and position the bearing seat by the outer pressure plate assembly; S5: The product at the rear end of the positioning oil cavity is pressed and positioned by the inner pressure plate assembly; S6: Weld the bearing housing assembly.

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