Axle housing interference assembly tool

Abstract

The utility model provides an axle housing interference assembly tool. The axle housing interference assembly tool comprises a base and an axle housing body, four positioning holes are formed in the axle housing body, two supporting seats are fixedly connected to the base, positioning pins are connected to the two supporting seats in a threaded mode, a supporting shaft is placed on one side of the axle housing body, and a sliding mechanism is installed on the base; the sliding mechanism comprises a guide rail, the guide rail is fixedly installed on the base, a sliding table is installed on the guide rail in a sliding mode, a first limiting plate is fixedly connected to the sliding table, a second limiting plate is fixedly connected to the sliding table through a bolt, two fixing screw holes and two adjusting holes are formed in the second limiting plate, and the fixing screw holes are matched with the adjusting holes. And the two fixing screw holes are in threaded connection with fixing bolts. The axle housing interference assembly tool has the advantages that the axle housing can be rapidly assembled, and the situation that assembly cannot be conducted due to part machining errors and assembly errors is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of axle housing assembly, in particular to an axle housing interference assembly tool. Background Art

[0002] With the development of the national economy, the demand for large-tonnage forklifts is increasing. Originally, the drive axles of large-tonnage forklifts were all imported, which not only had high costs but also a long procurement cycle. The newly developed domestically produced drive axles have greatly reduced the cost of the entire vehicle.

[0003] At present, the assembly of large-tonnage forklift drive axles in China mostly adopts the vertical assembly method. Due to the large size of large forklift drive axles, the vertical assembly method cannot be adopted under the conditions of small workshops. The horizontal assembly method must be adopted. However, it is difficult to ensure the coaxiality of the axle housing and the support shaft through tooling in the horizontal assembly method.

[0004] Therefore, it is necessary to provide a new bridge housing interference assembly tool to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a bridge housing that can be quickly assembled and avoid interference assembly tooling of the bridge housing that cannot be assembled due to parts processing errors and assembly errors.

[0006] To solve the above technical problems, the utility model provides an axle housing interference assembly tool, comprising: a base and an axle housing body, wherein the axle housing body is provided with four positioning holes, two support seats are fixedly connected to the base, and positioning pins are threadedly connected to the two support seats, a support shaft is placed on one side of the axle housing body, and a sliding mechanism is installed on the base;

[0007] The sliding mechanism includes a guide rail, which is fixedly installed on the base. A slide is slidably installed on the guide rail, and a limit plate 1 is fixedly connected to the slide. The slide is fixedly connected to a limit plate 2 by bolts. Two fixing screw holes and two adjustment holes are provided on the limit plate 1, and fixing bolts are threaded on both of the fixing screw holes.

[0008] As a further solution of the present invention, an L-shaped limit strip is fixedly installed on the base by means of bolts, and the rear side surface of the L-shaped limit strip is flush with the rear side surface of the guide rail.

[0009] As a further solution of the present invention, a fixing seat is provided at the bottom of the base, a mounting block is fixedly connected to the fixing seat, and a driving device is fixedly mounted on the mounting block.

[0010] As a further solution of the present invention, a plurality of mounting holes are provided on the support shaft, the fixing screw holes on the first limiting plate are corresponding to the mounting holes, and the adjusting holes and the mounting holes are staggered.

[0011] As a further solution of the present invention, the positioning hole, the support seat and the positioning pin constitute a positioning assembly, and the top surfaces of the two support seats are arranged to be flat.

[0012] As a further solution of the present invention, a plurality of mounting screw holes are symmetrically provided on the top surface of the fixing seat, and the bottom of the base is fixedly connected to the fixing seat through bolts and the plurality of mounting screw holes.

[0013] Compared with related technologies, the axle housing interference assembly tool provided by the present invention has the following beneficial effects:

[0014] 1. The utility model adopts a horizontal assembly method with a sliding mechanism. After heating the hole of the support shaft, the drive device pushes the support shaft so that the hole of the support shaft and the pin of the axle housing body are closely matched for rapid assembly, avoiding excessive operation steps that may cause the support shaft to cool down and become unable to be assembled.

[0015] 2. The utility model fixes the bridge housing body on the adjustment hole to adjust the coaxiality error by staggering the adjustment hole and the mounting hole, thereby preventing the situation where assembly cannot be performed due to part processing error and assembly error. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of the axle housing interference assembly tooling provided by the utility model;

[0018] Figure 2 A schematic diagram of the expanded structure of the axle housing interference assembly tooling provided by the utility model;

[0019] Figure 3 A schematic diagram of the support shaft installation structure of the axle housing interference assembly tooling provided by the present invention;

[0020] Figure 4 This is a schematic diagram of the fixing component structure of the axle housing interference assembly tooling provided by the utility model.

[0021] In the figure: 1. Base; 2. Bridge housing body; 3. Positioning hole; 4. Support seat; 5. Positioning pin; 6. Support shaft; 7. Guide rail; 8. Slide; 9. Limit plate 1; 10. Limit plate 2; 11. Adjustment hole; 12. Fixing bolt; 13. L-shaped limit strip; 14. Fixing seat; 15. Mounting block; 16. Drive device. DETAILED DESCRIPTION

[0022] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 ,in, Figure 1 This is a schematic diagram of the overall structure of the axle housing interference assembly tooling of the utility model; Figure 2 This is a schematic diagram of the expanded structure of the axle housing interference assembly tooling of the utility model; Figure 3 This is a schematic diagram of the support shaft installation structure of the axle housing interference assembly tooling of the utility model; Figure 4 This is a schematic diagram of the fixed assembly structure of the axle housing interference fit fixture provided by the present invention. The axle housing interference fit fixture comprises: a base 1 and an axle housing body 2. The axle housing body 2 is provided with four positioning holes 3. Two support seats 4 are fixedly connected to the base 1, and both support seats 4 are threadedly connected to positioning pins 5. A support shaft 6 is placed on one side of the axle housing body 2. A sliding mechanism is installed on the base 1.

[0023] The sliding mechanism includes a guide rail 7, which is fixedly mounted on the base 1. A slide 8 is slidably mounted on the guide rail 7, and a limit plate 9 is fixedly connected to the slide 8. The slide 8 is fixedly connected to a limit plate 2 10 by bolts. Two fixing screw holes and two adjustment holes 11 are provided on the limit plate 1 9, and fixing bolts 12 are threadedly connected to the two fixing screw holes.

[0024] like Figure 3 As shown, an L-shaped limiting strip 13 is fixedly installed on the base 1 by bolts, and the rear side surface of the L-shaped limiting strip 13 is flush with the rear side surface of the guide rail 7;

[0025] By setting the L-shaped limit strip 13, the position of the slide 8 can be limited to prevent the slide 8 from sliding out of the guide rail 7 during work. At the same time, the L-shaped limit strip 13 can be disassembled to facilitate adjustment and replacement after the slide 8 is removed from the guide rail 7.

[0026] like Figure 1 As shown, a fixing seat 14 is provided at the bottom of the base 1, a mounting block 15 is fixedly connected to the fixing seat 14, and a driving device 16 is fixedly installed on the mounting block 15;

[0027] By providing the driving device 16 , the support shaft 6 can be pushed so that the hole of the support shaft 6 is tightly matched with the pin of the axle housing body 2 .

[0028] like Figure 4 As shown, the support shaft 6 is provided with a plurality of mounting holes, the fixing screw holes on the limit plate 9 are correspondingly arranged to the mounting holes, and the adjustment hole 11 is staggered with the mounting hole.

[0029] By staggering the adjustment hole 11 and the mounting hole, when the axle housing body 2 and the support shaft 6 cannot be assembled successfully due to coaxiality error, the axle housing body 2 can be fixed on the adjustment hole 11 to adjust the coaxiality.

[0030] like Figure 1 and Figure 2 As shown, the positioning hole 3, the support seat 4 and the positioning pin 5 constitute a positioning assembly, and the top surfaces of the two support seats 4 are set to be flat;

[0031] By setting the positioning assembly, the axle housing body 2 can be positioned and placed on the support seat 4, which facilitates the subsequent interference fit assembly of the axle housing body 2 by the shrink fit method.

[0032] like Figure 1 As shown, the top surface of the fixing seat 14 is symmetrically provided with a plurality of mounting screw holes, and the bottom of the base 1 is fixedly connected to the fixing seat 14 through bolts and a plurality of mounting screw holes;

[0033] By symmetrically setting a plurality of mounting screw holes on the top surface of the fixing seat 14 , the slide 8 can be installed with the symmetry axis of the mounting screw holes as a reference, thereby reducing the lateral error of the coaxial axis between the bridge housing body 2 and the support shaft 6 .

[0034] The working principle of the axle housing interference assembly tool provided by the utility model is as follows:

[0035] Step 1: When performing assembly work within the constraints of a small workshop, such as Figure 1 As shown, the bridge housing body 2 and the support shaft 6 are assembled horizontally, and then in the initial state, as shown in FIG. Figure 2 As shown, the slide 8 is slid to the end away from the axle housing body 2, and then the support shaft 6 is placed on the slide 8. At the same time, the axle housing body 2 is positioned on the support seat 4 through the positioning hole 3, leaving space for the heating coil to operate in the middle. At the same time, the shaft on the axle housing body 2 and the hole on the support shaft 6 are interference fit in the initial state, that is, the hole is smaller than the shaft;

[0036] Step 2: The hole of the support shaft 6 is then heated by the high-frequency heating coil to expand. Once the hole reaches the dimension set by the process, the driving device 16 is activated to rapidly push the support shaft 6 so that the hole of the support shaft 6 fits tightly with the pin of the axle housing body 2, completing the interference fit between the axle housing body 2 and the support shaft 6.

[0037] Step 3: When assembly is impossible due to both processing error and assembly error, the bridge housing body 2 is fixed on the adjustment hole 11 by setting the adjustment hole 11 and the mounting hole to be offset to adjust the coaxiality error. At the same time, the limit plate 10 is replaced, and the support shaft 6 continues to be supported. The hole of the support shaft 6 is then heated, and then the driving device 16 is started to complete the interference fit assembly of the bridge housing body 2.

[0038] It should be noted that the device structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technology of the design principle, the settings of the device's power mechanism, power supply system, and control system are not fully described. However, those skilled in the art can clearly understand the details of its power mechanism, power supply system, and control system on the premise that they understand the principle of the above-mentioned utility model. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be implemented by simple programming by those skilled in the art.

[0039] The standard parts used can be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments or applied directly or indirectly without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A bridge housing interference assembly tool, characterized in that: include: A base and an axle housing body, wherein the axle housing body is provided with four positioning holes, two support seats are fixedly connected to the base, and both support seats are threadedly connected with positioning pins, a support shaft is placed on one side of the axle housing body, and a sliding mechanism is installed on the base; The sliding mechanism includes a guide rail, which is fixedly installed on the base. A slide is slidably installed on the guide rail, and a limit plate 1 is fixedly connected to the slide. The slide is fixedly connected to a limit plate 2 by bolts. Two fixing screw holes and two adjustment holes are provided on the limit plate 1, and fixing bolts are threaded on both of the fixing screw holes.

2. The interference fit assembly tool for axle housing according to claim 1, characterized in that: An L-shaped limiting strip is fixedly mounted on the base by means of bolts, and the rear side surface of the L-shaped limiting strip is flush with the rear side surface of the guide rail.

3. The interference fit assembly tool for axle housing according to claim 1, characterized in that: A fixing seat is provided at the bottom of the base, a mounting block is fixedly connected to the fixing seat, and a driving device is fixedly mounted on the mounting block.

4. The interference fit assembly tool for axle housing according to claim 1, characterized in that: The support shaft is provided with a plurality of mounting holes, the fixing screw holes on the first limiting plate are correspondingly arranged to the mounting holes, and the adjusting holes are staggered to the mounting holes.

5. The interference fit assembly tool for axle housing according to claim 1, characterized in that: The positioning hole, the support seat and the positioning pin constitute a positioning assembly, and the top surfaces of the two support seats are arranged to be flat.

6. The interference fit assembly tool for axle housing according to claim 3, characterized in that: The top surface of the fixing seat is symmetrically provided with a plurality of mounting screw holes, and the bottom of the base is fixedly connected to the fixing seat through bolts and the plurality of mounting screw holes.

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