Fixing device for welding of bearing seat assembly and using method of fixing device

Abstract

The invention discloses a fixing device for welding a bearing seat assembly, and belongs to the technical field of welding fixing tools. The middle part of the base is screwed with the lower end of the middle shaft rod; a center pressing plate and a second nut are arranged outside the center shaft rod, the center pressing plate is in press fit with the front sealing product, the second nut is arranged at the upper end of the center pressing plate and connected with the center shaft rod in a screwed mode, a positioning sleeve is attached to the end face of the bearing seat, and a high-precision auxiliary positioning diameter of the positioning sleeve is in clearance fit with a rear-section product of the outer wall of an oil cavity in the bearing seat assembly. At least two groups of outer pressing plate assemblies are arranged at the outer end of the positioning sleeve and are used for pressing the bearing seat; at least two sets of inner pressing plate assemblies are arranged at the inner end of the positioning sleeve and used for pressing products on the rear section of the outer wall of the oil cavity. Precise positioning of all parts is achieved, the risk that an operator is scalded due to high temperature in the welding process is avoided, it is ensured that the welding position can be fully protected by argon, and the welding precision, safety and production efficiency of the bearing seat assembly are improved.

Description

Technical Field

[0001] The invention relates to a bearing seat assembly welding fixing device and a use method thereof, belonging to the technical field of welding fixing tooling. Background Art

[0002] The manufacturing process of the bearing seat assembly involves assembly, welding, fluorescence inspection, X-ray inspection, aging treatment, spraying nickel graphite coating, washing and sealing test to ensure the accuracy, quality and reliability of the components. However, in the current production process, especially in the welding process, the existing welding equipment has obvious deficiencies in automatic positioning of parts. This means that during the assembly process, the operator needs to manually align and adjust the position of each part, which is not only time-consuming and labor-intensive, but also difficult to ensure high-precision matching between parts, thus affecting the performance and stability of the final product.

[0003] Secondly, the high temperature generated during welding is a major safety and production efficiency obstacle. Due to the extremely high temperature in the welding area, the operator cannot directly fix the parts by hand for a long time, which not only increases the difficulty of operation, but also may cause welding defects such as discontinuous welds and misalignment due to the displacement of parts.

[0004] Furthermore, for welding positions that require argon protection, existing equipment and technology are difficult to effectively cope with product structure limitations. Especially in bearing seat assemblies with complex structures or narrow spaces, the lack of appropriate auxiliary devices makes argon protection extremely difficult, which in turn increases the risk of oxidation and contamination during welding.

[0005] Finally, the parts in the bearing housing 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 may not only cause the assembled components to fail to meet the design requirements, but may also cause operational failures or safety hazards due to assembly errors. Summary of the invention

[0006] In order to solve the problems existing in the background technology, the present invention provides a bearing seat assembly welding fixing device and a use method thereof.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a fixing device for welding a bearing seat assembly, comprising a base, a central axis rod, a nut one, a central pressure plate, a nut two, a positioning sleeve, an inner pressure plate assembly and an outer pressure plate assembly; the high-precision positioning surface of the base is plugged into the front sealing product in the bearing seat assembly, and the middle part of the base is screwed with the lower end thread of the vertically arranged central axis rod and locked by a nut one; the outer side of the central axis rod is sleeved with a central pressure plate and a nut two, the high-precision surface of the central pressure plate is pressed and arranged with the front sealing product, the nut two is fitted on the upper end of the central pressure plate and is screwed with the central axis rod thread, the high-precision positioning surface of the positioning sleeve is fitted with the end face of the bearing seat in the bearing seat assembly, the high-precision auxiliary positioning diameter of the positioning sleeve is gap-matched with the rear section product of the outer wall of the oil chamber in the bearing seat assembly, and the outer end of the positioning sleeve is provided with at least two groups of outer pressure plate assemblies, and the outer pressure plate assemblies are used to press the bearing seat; the inner end of the positioning sleeve is provided with at least two groups of inner pressure plate assemblies, and the inner pressure plate assemblies are used to press the rear section product of the outer wall of the oil chamber.

[0008] Each group of the outer pressure plate assembly includes an outer pressure plate and a bolt; the lower end surface of the positioning sleeve is screwed to the upper end thread of the vertically arranged bolt, the lower end of the bolt is inserted into the waist-shaped hole of the outer pressure plate, and the inner end of the outer pressure plate is pressed and set on the bearing seat.

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

[0010] Each group of the inner pressure plate assembly includes an inner pressure plate, a support, a third nut and a second bolt; the inner end surface of the positioning sleeve is threadedly screwed 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 screwed 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, and the inner end of the inner pressure plate is pressed tightly on the rear section product of the outer wall of the oil chamber.

[0011] The positioning sleeve is provided with a vent hole which is connected with the rear section product of the outer wall of the oil cavity and the bearing seat, and a conduit is inserted into the vent hole through interference.

[0012] A method for using a fixing device for welding a bearing seat assembly according to the present invention comprises 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, turn nut 2 to make the center pressure plate press the front seal tightly; product

[0015] S3: Place the locating sleeve in the bearing seat assembly;

[0016] S4: Press and position the bearing seat through the outer pressure plate assembly;

[0017] S5: The rear section of the outer wall of the oil chamber is pressed and positioned by the inner pressure plate assembly;

[0018] S6: Weld the bearing seat assembly.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention achieves precise positioning of various parts through precisely designed structures such as the base, central axis rod, pressure plate assembly and positioning sleeve, avoiding the risk of operator burns due to high temperature during welding, and ensuring that the welding position can be fully protected by argon gas, thereby significantly improving the welding accuracy, safety and production efficiency of the bearing seat assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] A fixing device for welding a bearing seat assembly, comprising a base 1, a central axis rod 2, a nut 1 3, a central pressure plate 4, a nut 2 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 plugged into the front sealing product in the bearing seat assembly, and is used to position and center the front sealing product; the middle part of the base 1 is threadedly screwed with the lower end of the vertically arranged central axis rod 2 and is locked by a nut 1 3; the outer side of the central axis rod 2 is sleeved with a central pressure plate 4 and a nut 2 6, and the high-precision surface of the central pressure plate 4 is pressed and arranged with the front sealing product, which has a pressing effect on the front sealing product. The nut 2 6 is fitted on the upper end of the central pressure plate 4 and is threadedly screwed with the central axis rod 2, and the nut 1 6 is turned to push the central pressure plate 4 forward; at the same time, the bottom plate 1 and the central pressure plate 4 are both provided with weight reduction holes. The high-precision positioning surface of the positioning sleeve 13 is fitted with the end surface of the bearing seat in the bearing seat assembly, which is used to position and center the bearing seat; the high-precision auxiliary positioning diameter of the positioning sleeve 13 is clearance-matched with the rear section product of the outer wall of the oil chamber in the bearing seat assembly, which is used to roughly position the rear section product of the outer wall of the oil chamber; the outer end of the positioning sleeve 13 is provided with at least two groups of outer pressure plate assemblies, and the outer pressure plate assemblies are used to press the bearing seat; the inner end of the positioning sleeve 13 is provided with at least two groups of inner pressure plate assemblies, and the inner pressure plate assemblies are used to press the rear section product of the outer wall of the oil chamber.

[0024] Each set of the outer pressure plate assembly includes an outer pressure plate 15 and a bolt 16; the lower end surface of the positioning sleeve 13 is screwed with the upper end of the vertically arranged bolt 16, the lower end of the bolt 16 is inserted into the waist-shaped hole of the outer pressure plate 15, and the inner end of the outer pressure plate 15 is pressed and set on the bearing seat. When the bolt 16 is tightened, the outer pressure plate 15 is driven to press the bearing seat.

[0025] Each group of the outer pressure plate assembly also includes a cylindrical pin 18, which is vertically inserted into the lower end surface of the positioning sleeve 13, and the outer end of the outer pressure plate 15 is inserted into the cylindrical pin 18. The cylindrical pin 18 limits the placement of the outer pressure plate 15.

[0026] Each group of the inner pressure plate assembly includes an inner pressure plate 7, a support 8, a nut three 9 and a bolt two 11; the inner end surface of the positioning sleeve 13 is screwed and fixed with the support 8 and the bolt two 11, the upper end of the bolt two 11 is inserted into the waist-shaped hole of the inner pressure plate 7, the upper end of the bolt two 11 is screwed and screwed with the nut three 9, the nut three 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 with the upper end of the support 8, and the inner end of the inner pressure plate 7 is pressed and set on the rear section of the outer wall of the oil chamber. When the nut three 9 is tightened on the bolt two 11, it drives the inner pressure plate 7 to move downward, and plays a pressing role on the rear section of the outer wall of the oil chamber.

[0027] The positioning sleeve 13 is provided with a vent hole connected to the rear section of the outer wall of the oil chamber 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 center 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 for using a fixing device for welding a bearing seat assembly according to the present invention comprises 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 the nut 26 to make the center pressure plate 4 press the front seal tightly; product

[0032] S3: placing the positioning sleeve 13 in the bearing seat assembly;

[0033] S4: Press and position the bearing seat through the outer pressure plate assembly;

[0034] S5: The rear section of the outer wall of the oil chamber is pressed and positioned by the inner pressure plate assembly;

[0035] S6: Weld the bearing seat assembly.

[0036] It will be apparent to those skilled in the art that the 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 the spirit or essential features of the invention. 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, and it is intended that all variations within the meaning and range of equivalents of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0037] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fixing device for welding a bearing seat assembly, characterized in that: It comprises a base (1), a central axis rod (2), a nut one (3), a central pressure plate (4), a nut two (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 plugged into the front sealing product in the bearing seat assembly, the middle part of the base (1) is screwed into the lower end thread of the vertically arranged central axis rod (2) and is locked by nut one (3); the outer side of the central axis rod (2) is sleeved with a central pressure plate (4) and a nut two (6), the high-precision surface of the central pressure plate (4) is pressed and arranged with the front sealing product, the Nut 2 (6) is fitted on the upper end of the center pressure plate (4) and is threadedly connected to the center shaft rod (2); the high-precision positioning surface of the positioning sleeve (13) is fitted with the end surface of the bearing seat in the bearing seat assembly; the high-precision auxiliary positioning diameter of the positioning sleeve (13) is clearance-matched with the rear section of the outer wall of the oil chamber in the bearing seat assembly; the outer end of the positioning sleeve (13) is provided with at least two groups of outer pressure plate assemblies, and the outer pressure plate assemblies are used to press the bearing seat; the inner end of the positioning sleeve (13) is provided with at least two groups of inner pressure plate assemblies, and the inner pressure plate assemblies are used to press the rear section of the outer wall of the oil chamber.

2. A bearing seat assembly welding fixture according to claim 1, characterized in that: Each group of the outer pressure plate assembly comprises an outer pressure plate (15) and a bolt (16); the lower end surface of the positioning sleeve (13) is screwed to the upper end of the vertically arranged bolt (16), the lower end of the bolt (16) is inserted into the waist-shaped hole of the outer pressure plate (15), and the inner end of the outer pressure plate (15) is pressed and set on the bearing seat.

3. A bearing seat assembly welding fixing device according to claim 2, characterized in that: Each group of the outer pressure plate assembly also includes a cylindrical pin (18), which is vertically inserted into the lower end surface of the positioning sleeve (13), and the outer end of the outer pressure plate (15) is inserted into the cylindrical pin (18).

4. A bearing seat assembly welding fixture according to claim 1, characterized in that: Each group of the inner pressure plate assembly comprises an inner pressure plate (7), a support (8), a nut three (9) and a bolt two (11); the inner end surface of the positioning sleeve (13) is screwed and fixed to the support (8) and the bolt two (11); the upper end of the bolt two (11) is inserted into the waist-shaped hole of the inner pressure plate (7), the upper end of the bolt two (11) is screwed and connected to the nut three (9), the nut three (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), and the inner end of the inner pressure plate (7) is pressed and set on the rear section product of the outer wall of the oil chamber.

5. A bearing seat assembly welding fixing device according to claim 1, characterized in that: The positioning sleeve (13) is provided with a vent hole which is connected to the rear section of the outer wall of the oil chamber and the bearing seat, and a guide tube (14) is inserted into the vent hole through interference fit.

6. A method for using the bearing seat assembly welding fixing device according to any one of claims 1 to 5, characterized in that: The method comprises 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 the second nut (6) to make the center pressure plate (4) press the front seal tightly; S3: Place the positioning sleeve (13) in the bearing seat assembly; S4: Press and position the bearing seat through the outer pressure plate assembly; S5: The rear section of the outer wall of the oil chamber is pressed and positioned by the inner pressure plate assembly; S6: Weld the bearing seat assembly.

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