A tooling structure for assembling crankshaft helical gear

Abstract

The utility model discloses a tooling structure for assembling crankshaft helical gears, which relates to the technical field of crankshaft helical gear assembly, including a grip plate, a first groove is provided at the middle position of the lower end of the grip plate, second grooves are provided on both sides of the lower end of the grip plate, two threaded grooves are provided at the left end of the grip plate, a connecting rod neck block and two main shaft neck blocks are provided at the lower end of the grip plate, a fourth groove is provided at the upper end of the connecting rod neck block, two second holes are penetrated through the side end of the connecting rod neck block, a third groove is provided at the upper ends of the two main shaft neck blocks, and a first hole is penetrated through the side ends of the two main shaft neck blocks. The utility model effectively solves the problems of large marking error, low production efficiency, large scrap loss, etc. in the process of assembling crankshaft helical gears through the above-mentioned installation method, improves the precision and production efficiency of crankshaft hot-mounted gears, ensures product quality, and greatly reduces scrap loss.

Description

Technical Field

[0001] The utility model relates to the technical field of crankshaft helical gear assembly, in particular to a tooling structure for assembling crankshaft helical gears. Background Art

[0002] After the helical gear is assembled, the angle between the marked tooth and the central axis of the first main journal and the first connecting rod journal must be 45°±15′. At present, the crankshaft is assembled by thermal installation, marking is made on the crankshaft by scribing, and the helical gear is assembled in the specified position according to the requirements by visual inspection. When assembling using this method, the assembly accuracy is affected due to the large errors in scribing and visual inspection, and the production efficiency is low. At the same time, because of the use of thermal installation, if the helical gear is not quickly adjusted to the required position, the temperature of the helical gear will drop and it will be locked on the crankshaft journal, which will cause the helical gear to be scrapped and cause waste losses. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a tooling structure for assembling crankshaft helical gears, which solves the technical problem that when assembling using this method, the assembly accuracy is affected due to large errors in marking and visual inspection, and the production efficiency is low. At the same time, because hot mounting is adopted, if the helical gear is not quickly adjusted to the required position, the temperature of the helical gear drops and it locks on the crankshaft journal, which will cause the helical gear to be scrapped and cause waste loss.

[0005] (II) Technical solution

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A tooling structure for assembling a crankshaft helical gear comprises a grip plate, a first groove is provided at the middle position of the lower end of the grip plate, second grooves are provided on both sides of the lower end of the grip plate, two threaded grooves are provided on the left end of the grip plate, a connecting rod neck block and two main shaft neck blocks are provided at the lower end of the grip plate, a fourth groove is provided at the upper end of the connecting rod neck block, two second holes are penetrated through the side end of the connecting rod neck block, a third groove is provided at the upper ends of the two main shaft neck blocks, and the first hole is penetrated through the side ends of the two main shaft neck blocks.

[0008] Preferably, connecting bolts are threadedly installed in the two thread grooves opened at the left end of the grip plate, and positioning teeth are fixedly installed between the two connecting bolts and the grip plate.

[0009] Preferably: a cushion block is provided in the second hole of the connecting rod neck block and the first hole of the main shaft neck block, the connecting rod neck block is fixedly welded in the first groove of the grip plate through the fourth groove, and the two main shaft neck blocks are fixedly welded in the two second grooves of the grip plate through the third grooves.

[0010] (III) Beneficial effects

[0011] The invention effectively solves the problems of large marking error, low production efficiency and large waste loss in the process of crankshaft helical gear assembly through the above-mentioned installation method, improves the accuracy and production efficiency of crankshaft hot-mounted gears, ensures product quality and greatly reduces waste loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0013] Figure 1 It is a structural diagram of the entire utility model;

[0014] Figure 2 This is a structural diagram of the grip board of the utility model;

[0015] Figure 3 This is a structural diagram of the main shaft neck clamp block of the utility model;

[0016] Figure 4 This is a structural diagram of the connecting rod neck block of the utility model;

[0017] Figure 5 It is a structural diagram of the crankshaft of the utility model.

[0018] Legend: 11. Main journal block; 12. Connecting rod neck block; 13. Spacer; 14. Grip plate; 15. Positioning tooth; 16. Connecting bolt; 21. First groove; 22. Second groove; 23. Threaded groove; 24. First hole; 25. Third groove; 26. Second hole; 27. Fourth groove; 31. Crankshaft; 32. Bevel gear. DETAILED DESCRIPTION

[0019] The embodiment of the present application provides a tooling structure for assembling crankshaft helical gears, which effectively solves the problem that when assembling using this method, the assembly accuracy is affected due to large marking and visual errors, and the production efficiency is low. At the same time, due to the use of hot mounting, if the helical gear is not quickly adjusted to the required position, the temperature of the helical gear will drop and it will lock on the crankshaft journal, which will cause the helical gear to be scrapped and cause waste loss. The new type of device effectively solves the problems of large marking errors, low production efficiency, and large waste loss in the process of assembling helical gears on the crankshaft through the above-mentioned installation method, improves the accuracy and production efficiency of crankshaft hot-mounted gears, ensures product quality, and greatly reduces waste loss.

[0020] Example

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the technical solution in the embodiment of the present application is to effectively solve the technical problems that when assembling by this method, the assembly accuracy is affected due to large errors in marking and visual inspection, and the production efficiency is low. At the same time, because of the use of hot mounting, if the helical gear is not quickly adjusted to the required position, the temperature of the helical gear drops and locks on the crankshaft journal, which will cause the helical gear to be scrapped and cause waste losses. The overall idea is as follows:

[0022] In view of the problems existing in the prior art, the utility model provides a tooling structure for assembling crankshaft helical gears, including a grip plate 14, a first groove 21 is opened in the middle position of the lower end of the grip plate 14, second grooves 22 are opened on both sides of the lower end of the grip plate 14, two threaded grooves 23 are opened on the left end of the grip plate 14, a connecting rod neck block 12 and two main shaft neck blocks 11 are provided at the lower end of the grip plate 14, a fourth groove 27 is opened at the upper end of the connecting rod neck block 12, two second holes 26 are penetrated at the side end of the connecting rod neck block 12, a third groove 25 is opened at the upper ends of the two main shaft neck blocks 11, and a first hole 24 is penetrated at the side ends of the two main shaft neck blocks 11. This tooling consists of six parts: the main shaft neck block 11, the connecting rod neck block 12, the cushion block 13, the grip plate 14, the positioning tooth 15, and the connecting bolt 16.

[0023] like Figure 1 and Figure 3 , install the pad 13 in the first hole 24 opened in the main journal block 11, and ensure that the width between the two pads 13 on the main journal block 11 is the same as the main journal diameter of the crankshaft 31 (such as Figure 5 ).

[0024] like Figure 1 and Figure 4, install the pad 13 in the second hole 26 of the connecting rod neck block 12, and ensure that the width between the two pads 13 on the connecting rod neck block 12 is the same as the connecting rod neck diameter of the crankshaft 31 (such as Figure 5 ).

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 , respectively weld the two main journal blocks 11 into the second grooves 22 of the grip plate 14, ensuring that the two main journal blocks 11 are on the same horizontal line, weld the connecting rod neck block 12 into the first groove 21 of the grip plate 14, ensuring that the difference in center height between the connecting rod neck block 12 and the two main journal blocks 11 is the same as the rotation radius of the crankshaft 31; fix the positioning tooth 15 to the side end of the threaded groove 23 of the grip plate 14 using the connecting bolt 16 (such as Figure 5 ).

[0026] The two threaded grooves 23 opened at the left end of the grip plate 14 are both threadedly installed with connecting bolts 16, and the positioning teeth 15 are fixedly installed between the two connecting bolts 16 and the grip plate 14. The second hole 26 opened by the connecting rod neck block 12 and the first hole 24 opened by the main shaft neck block 11 are both provided with a cushion block 13. The connecting rod neck block 12 is fixedly welded to the first groove 21 opened by the grip plate 14 through the fourth groove 27 opened. The two main shaft neck blocks 11 are fixedly welded to the two second grooves 22 opened by the grip plate 14 through the third grooves 25 opened. The main shaft neck blocks 11 in the assembled tooling are respectively placed on Figure 5 On the journals of the first and second main journals of the middle crankshaft 31, place the connecting rod neck block 12 on the journal of the first connecting rod neck shaft, and at the same time, place the positioning tooth 15 on the grip plate 14 close to the left end face of the first main journal, and face the marked tooth of the helical gear 32 outward. Starting from the marked tooth, the seventh tooth is matched with the positioning tooth 15 on the grip plate 14. At this time, the marked tooth is just located at a forty-five degree position between the first main journal and the center line of the first connecting rod journal. The new type effectively solves the problems of large marking error, low production efficiency, and large scrap loss in the process of assembling the helical gear 32 of the crankshaft 31 through the above-mentioned installation method, improves the accuracy and production efficiency of the hot-mounted gear of the crankshaft 31, ensures product quality, and greatly reduces scrap loss.

[0027] Working principle:

[0028] In the first step, the tooling consists of six parts: a main shaft neck block 11, a connecting rod neck block 12, a cushion block 13, a grip plate 14, a positioning tooth 15, and a connecting bolt 16.

[0029] like Figure 1 and Figure 3, install the pad 13 in the first hole 24 opened in the main journal block 11, and ensure that the width between the two pads 13 on the main journal block 11 is the same as the main journal diameter of the crankshaft 31 (such as Figure 5 ).

[0030] like Figure 1 and Figure 4 , install the pad 13 in the second hole 26 of the connecting rod neck block 12, and ensure that the width between the two pads 13 on the connecting rod neck block 12 is the same as the connecting rod neck diameter of the crankshaft 31 (such as Figure 5 ).

[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4 , respectively weld the two main journal blocks 11 into the second grooves 22 of the grip plate 14, ensuring that the two main journal blocks 11 are on the same horizontal line, weld the connecting rod neck block 12 into the first groove 21 of the grip plate 14, ensuring that the difference in center height between the connecting rod neck block 12 and the two main journal blocks 11 is the same as the rotation radius of the crankshaft 31; fix the positioning tooth 15 to the side end of the threaded groove 23 of the grip plate 14 using the connecting bolt 16 (such as Figure 5 ).

[0032] The second step is to place the main shaft neck blocks 11 in the assembled tooling respectively. Figure 5 On the journals of the first and second main journals of the middle crankshaft 31, place the connecting rod neck block 12 on the journal of the first connecting rod neck shaft, and at the same time, place the positioning tooth 15 on the grip plate 14 close to the left end face of the first main journal, and face the marked tooth of the bevel gear 32 outward. Starting from the marked tooth, match the seventh tooth with the positioning tooth 15 on the grip plate 14. At this time, the marked tooth is just located at a forty-five degree position between the center line of the first main journal and the first connecting rod journal.

[0033] The present invention effectively solves the problems of large marking error, low production efficiency, large scrap loss, etc. during the assembly of the bevel gear 32 on the crankshaft 31 through the above-mentioned installation method, improves the accuracy and production efficiency of the hot-mounted gear on the crankshaft 31, ensures product quality, and greatly reduces scrap loss.

[0034] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A tooling structure for assembling a crankshaft helical gear, comprising a grip plate (14), characterized in that: A first groove (21) is provided in the middle of the lower end of the grip plate (14), second grooves (22) are provided on both sides of the lower end of the grip plate (14), and two thread grooves (23) are provided on the left side of the grip plate (14); The lower end of the grip plate (14) is provided with a connecting rod neck block (12) and two main shaft neck blocks (11); the upper end of the connecting rod neck block (12) is provided with a fourth groove (27); and the side end of the connecting rod neck block (12) is provided with two second holes (26); The upper ends of the two main shaft neck clamping blocks (11) are each provided with a third groove (25), and the side ends of the two main shaft neck clamping blocks (11) are each provided with a first hole (24) extending therethrough.

2. A tooling structure for assembling crankshaft helical gears according to claim 1, characterized in that: Connecting bolts (16) are installed in two thread grooves (23) on the left side of the grip plate (14) through threads.

3. A tooling structure for assembling crankshaft helical gears according to claim 2, characterized in that: Positioning teeth (15) are fixedly installed between the two connecting bolts (16) and the gripping plate (14).

4. A tooling structure for assembling crankshaft helical gears according to claim 3, characterized in that: A cushion block (13) is provided in the second hole (26) opened in the connecting rod neck clamp (12) and the first hole (24) opened in the main shaft neck clamp (11).

5. The tooling structure for assembling crankshaft helical gears according to claim 4, characterized in that: The connecting rod neck clamping block (12) is fixedly welded to the first groove (21) opened in the grip plate (14) via the fourth groove (27) opened.

6. A tooling structure for assembling crankshaft helical gears according to claim 5, characterized in that: The two main shaft journal clamping blocks (11) are respectively fixedly welded in two second grooves (22) opened in the grip plate (14) through the opened third grooves (25).

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