Engine camshaft nut tightening table
By designing the shaft support and shaft fixing components of the engine camshaft nut tightening table, the multi-directional fixation of the camshaft is achieved, which solves the displacement problem during the assembly process, improves assembly efficiency and reduces safety risks.
Patent Information
- Application Number
- CN202421814595.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-07-30
AI Technical Summary
In the prior art, the camshaft cannot be completely fixed during the assembly process and is easily displaced, resulting in low assembly efficiency and safety hazards.
An engine camshaft nut tightening table is designed, including a shaft support assembly and a shaft fixing assembly, which ensures the stable positioning of the camshaft through longitudinal and transverse fixing structures, and realizes multi-directional fixing using a fixing bolt structure and a fixing cap structure.
It effectively solves the displacement problem of the camshaft during the assembly process, improves assembly efficiency, and reduces the risk of camshaft scrapping and safety accidents.
Smart Images
Figure CN223146520U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of camshafts, and particularly relates to an engine camshaft nut tightening table. Background Art
[0002] A camshaft is a component in a piston engine. Its function is to control the opening and closing of the valves. Although the rotational speed of the camshaft is half of that of the crankshaft in a four-stroke engine (the rotational speed of the camshaft is the same as that of the crankshaft in a two-stroke engine), generally its rotational speed is still very high and it needs to bear a large torque. Therefore, in the design, the requirements for the camshaft in terms of strength and support are very high, and its material is generally high-quality alloy steel or alloy steel. Since the valve motion law is related to the power and operating characteristics of an engine, the camshaft design occupies a very important position in the engine design process.
[0003] In the prior art, the existing camshaft has a cylindrical appearance. During the assembly process of camshaft accessories, the camshaft is usually fixed manually on a workbench. However, when fixed manually on the workbench, the camshaft cannot be completely fixed and is prone to displacement, resulting in low assembly efficiency of accessories and easily causing the scrapping of the camshaft or personal safety accidents. Summary of the Utility Model
[0004] Based on this, the purpose of the present utility model is to provide an engine camshaft nut tightening table, which can effectively solve the deficiencies in the above-mentioned prior art.
[0005] An engine camshaft nut tightening table includes a workbench and support structures respectively arranged at the four corners of the bottom of the workbench. There is a notch at one corner of the workbench. An axial support assembly for longitudinally fixing the camshaft is arranged on the support structure. The axial support assembly is arranged on the support structure close to the notch and on the side facing the notch. An axial fixing assembly for horizontally fixing the camshaft is arranged at the notch position. The axial fixing assembly includes a first fixing structure connected to one side of the workbench for abutting against the camshaft and a second fixing structure hinged on the first fixing structure for abutting against the camshaft. A fixing bolt structure for fastening the camshaft is connected between the first fixing structure and the second fixing structure. One end of the fixing bolt structure is hinged on the first fixing structure. A fixing cap structure for fixing the fixing bolt structure is arranged at the end of the fixing bolt structure far from the first fixing structure. The fixing bolt structure passes through the second fixing structure and is connected to the fixing cap structure. An abutting structure for abutting against the camshaft is movably arranged on the fixing bolt structure.
[0006] Further, the contact surface between the first fixing structure and the camshaft is arc-shaped, and a first buffer structure is provided on the contact surface between the first fixing structure and the camshaft.
[0007] Further, the contact surface between the second fixing structure and the camshaft is arc-shaped, and a second buffer structure is provided on the contact surface between the second fixing structure and the camshaft.
[0008] Further, threads adapted to the abutting structure and the fixing cap structure are provided on the cylindrical outer surface of the fixing bolt structure, and the abutting structure and the fixing cap structure are threadedly connected to the fixing bolt structure.
[0009] Further, a fastener for fixing the abutting structure is also threadedly connected to the fixing bolt structure. The fasteners are provided on both sides of the abutting structure, and the cross-section of the fastener is smaller than the cross-section of the abutting structure.
[0010] Further, the contact surface between the abutting structure and the camshaft is arc-shaped, and a third buffer structure is provided on the contact surface between the abutting structure and the camshaft.
[0011] Further, a flat placement structure for horizontally placing the camshaft is provided on the top of the workbench. The contact surface between the flat placement structure and the camshaft is arc-shaped, and a fourth buffer structure is provided on the contact surface between the flat placement structure and the camshaft.
[0012] Further, the shaft support assembly includes a shaft bracket structure provided on the side of the support structure close to the notch facing the notch and a shaft support seat structure provided on the top of the shaft bracket structure for longitudinally fixing the camshaft.
[0013] Further, the end of the camshaft is movably provided in the shaft support seat structure, and a fifth buffer structure is provided on the contact surface between the shaft support seat structure and the camshaft.
[0014] Further, the centers of the shaft support assembly and the shaft fixing assembly are on the same axis.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: By providing a shaft support assembly, the camshaft can be longitudinally fixed, and by providing a shaft fixing assembly, the camshaft can be laterally fixed; specifically, by providing a shaft support assembly, the camshaft is axially fixed, and then by abutting one side of the camshaft against the first fixing structure, and then moving the second fixing structure towards the camshaft until the second fixing structure abuts against one side of the camshaft, and then moving the fixing bolt structure towards the camshaft until the abutting structure abuts against one side of the camshaft, and finally fixing the fixing bolt structure through the fixing cap structure, so that the camshaft is circumferentially abutted by the first fixing structure, the second fixing structure and the abutting structure, so that the longitudinal and lateral directions of the camshaft are both fixed, thereby solving the problem that the camshaft cannot be completely fixed and is prone to displacement, resulting in low efficiency of fitting parts and prone to scrapping of the camshaft or personal safety accidents. Brief Description of the Drawings
[0016] Figure 1 FIG. is a schematic diagram of the overall structure of the engine camshaft nut tightening table in the embodiment of the present utility model;
[0017] Figure 2 is Figure 1 an enlarged schematic diagram of the partial A in FIG.
[0018] Main element symbol description:
[0019] Workbench 10 Second fixing structure 42 Support structure 20 Fixing bolt structure 43 Shaft support assembly 30 Fixing cap structure 44 Shaft bracket structure 31 Abutting structure 45 Shaft support seat structure 32 Fastener 46 First fixing structure 41 Horizontal structure 50
[0020] The following specific embodiments will further illustrate the present utility model in conjunction with the above-mentioned drawings. Specific Embodiments
[0021] In order to facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.
[0022] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.
[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model herein are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0024] Please refer to Figures 1 to 2 , the engine camshaft nut tightening table in the embodiment of this utility model includes a workbench 10 and support structures 20 respectively arranged at the four corners of the bottom of the workbench 10. A notch is provided at one corner of the workbench 10. An axle support assembly 30 for longitudinally fixing the camshaft is provided on the support structure. The axle support assembly 30 is arranged on the support structure close to the notch and on the side facing the notch. An axle fixing assembly for horizontally fixing the camshaft is provided at the notch position.
[0025] Furthermore, the axle support assembly 30 includes an axle bracket structure 31 arranged on the side of the support structure close to the notch and facing the notch, and an axle support seat structure 32 arranged at the top of the axle bracket structure 31 for longitudinally fixing the camshaft. The end of the camshaft is movably arranged in the axle support seat structure 32. A fifth buffer structure is provided on the contact surface between the support seat structure 32 and the camshaft.
[0026] It can be understood that by setting the axle support seat structure 32, the end of the camshaft can be inserted into the support seat structure 32, thereby obtaining longitudinal fixation.
[0027] It should be noted that by setting the fifth buffer structure, the camshaft can be protected when inserted into the interior of the support seat structure 32.
[0028] Furthermore, the axle fixing assembly includes a first fixing structure 41 connected to one side of the workbench 10 for abutting against the camshaft, and a second fixing structure 42 hinged to the first fixing structure 41 for abutting against the camshaft. A fixing bolt structure 43 for fastening the camshaft is connected between the first fixing structure 41 and the second fixing structure 42. One end of the fixing bolt structure 43 is hinged to the first fixing structure 41. A fixing cap structure 44 for fixing the fixing bolt structure 43 is provided at the end of the fixing bolt structure 43 away from the first fixing structure 41. The fixing bolt structure 43 passes through the second fixing structure 42 and is connected to the fixing cap structure 44. An abutting structure 45 for abutting against the camshaft is movably arranged on the fixing bolt structure 43.
[0029] It can be understood that by abutting one side of the camshaft against the first fixing structure 41, then moving the second fixing structure 42 towards the camshaft until the second fixing structure 42 abuts against one side of the camshaft, and then moving the fixing bolt structure 43 towards the camshaft until the abutting structure 45 abuts against one side of the camshaft, and finally fixing the fixing bolt structure 43 through the fixing cap structure 44, so that the camshaft is circumferentially abutted by the first fixing structure 41, the second fixing structure 42 and the abutting structure 45, thereby fixing the lateral direction of the camshaft.
[0030] Further, the contact surface between the first fixing structure 41 and the camshaft is arc-shaped, and a first buffer structure is arranged on the contact surface between the first fixing structure 41 and the camshaft.
[0031] It can be understood that by setting the contact surface between the first fixing structure 41 and the camshaft to be arc-shaped, the contact area between the first fixing structure 41 and the camshaft can be increased, and by arranging the first buffer structure, a protective effect can be achieved when the camshaft abuts against the first fixing structure 41.
[0032] Further, the contact surface between the second fixing structure 42 and the camshaft is arc-shaped, and a second buffer structure is arranged on the contact surface between the second fixing structure and the camshaft.
[0033] It can be understood that by setting the contact surface between the second fixing structure 42 and the camshaft to be arc-shaped, the contact area between the second fixing structure 42 and the camshaft can be increased, and by arranging the second buffer structure, a protective effect can be achieved when the camshaft abuts against the second fixing structure 42.
[0034] Further, threads adapted to the abutting structure 45 and the fixing cap structure 44 are provided on the cylindrical outer surface of the fixing bolt structure 43, and the abutting structure 45 and the fixing cap structure 44 are threadedly connected to the fixing bolt structure.
[0035] Further, a fastener 46 for fixing the abutting structure 45 is also threadedly connected to the fixing bolt structure 43. The fasteners 46 are arranged on both sides of the abutting structure 45, and the cross-section of the fastener 46 is smaller than the cross-section of the abutting structure 45.
[0036] It can be understood that by providing threads adapted to the abutting structure 45 on the cylindrical outer surface of the fixing bolt structure 43, and threadedly connecting a fastener 46 for fixing the abutting structure 45 to the fixing bolt structure 43, after the abutting structure 45 abuts against one side of the camshaft, the abutting structure 45 can be fixed to the fixing bolt structure 43 by the fasteners 46 provided on both sides of the abutting structure 45.
[0037] It can be understood that by rotating the fixing cap structure 44 clockwise, the fixing cap structure 44 is caused to push the second fixing structure and drive the abutting structure 45 to move the camshaft towards the first fixing structure 41, so that the lateral fixing of the camshaft is more secure.
[0038] Further, the contact surface between the abutting structure 45 and the camshaft is arc-shaped, and a third buffer structure is provided on the contact surface between the abutting structure 45 and the camshaft.
[0039] It can be understood that by setting the contact surface between the abutting structure 45 and the camshaft to be arc-shaped, the contact area between the abutting structure 45 and the camshaft can be increased, and by providing the third buffer structure, a protective effect can be achieved when the camshaft abuts against the abutting structure 45.
[0040] Further, a flat placement structure 50 for horizontally placing the camshaft is provided on the top of the workbench 10. The contact surface between the flat placement structure 50 and the camshaft is arc-shaped, and a fourth buffer structure is provided on the contact surface between the flat placement structure 50 and the camshaft.
[0041] It can be understood that by providing the flat placement structure 50, the camshaft can be horizontally placed on the workbench 10 through the flat placement structure 50 for installing accessories such as flat keys.
[0042] It can be understood that by setting the contact surface between the flat placement structure 50 and the camshaft to be arc-shaped, the contact area between the flat placement structure 50 and the camshaft can be increased, and by providing the fourth buffer structure, a protective effect can be achieved when the camshaft abuts against the flat placement structure 50 during the installation of accessories such as flat keys.
[0043] Further, the centers of the shaft support assembly 30 and the shaft fixing assembly are on the same axis.
[0044] It can be understood that by setting the centers of the shaft support assembly 30 and the shaft fixing assembly on the same axis, the axial position of the camshaft can be kept horizontal when the camshaft is fixed to the present utility model.
[0045] In summary, for the engine camshaft nut tightening platform in the above embodiments of the present utility model, by providing a shaft support assembly, the camshaft can be longitudinally fixed, and by providing a shaft fixing assembly, the camshaft can be transversely fixed; specifically, by providing a shaft support assembly, the camshaft is axially fixed, then one side of the camshaft is abutted against the first fixing structure, and then the second fixing structure is moved towards the camshaft until the second fixing structure abuts against one side of the camshaft, and then the fixing bolt structure is moved towards the camshaft until the abutting structure abuts against one side of the camshaft, and finally the fixing bolt structure is fixed by the fixing cap structure, so that the camshaft is circumferentially abutted by the first fixing structure, the second fixing structure and the abutting structure, so that the longitudinal and transverse directions of the camshaft are fixed, thereby solving the problem that the camshaft cannot be completely fixed and is prone to displacement, resulting in low assembly efficiency of accessories and easily causing the scrapping of the camshaft or personal safety accidents.
[0046] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0047] The above embodiments only represent several implementation manners of the present utility model, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model should be subject to the appended claims.
Claims
1. An engine camshaft nut tightening station, characterized in that, It includes a workbench and support structures respectively arranged at the four corners of the bottom of the workbench. There is a notch at one corner of the workbench. An axle support assembly for longitudinally fixing a camshaft is arranged on the support structure. The axle support assembly is arranged on the support structure close to the notch and on the side facing the notch. An axle fixing assembly for laterally fixing the camshaft is arranged at the notch position. The axle fixing assembly includes a first fixing structure with one side connected to the workbench for abutting against the camshaft and a second fixing structure hinged on the first fixing structure for abutting against the camshaft. A fixing bolt structure for fastening the camshaft is connected between the first fixing structure and the second fixing structure. One end of the fixing bolt structure is hinged on the first fixing structure. A fixing cap structure for fixing the fixing bolt structure is arranged at the end of the fixing bolt structure away from the first fixing structure. The fixing bolt structure passes through the second fixing structure and is connected to the fixing cap structure. An abutting structure for abutting against the camshaft is movably arranged on the fixing bolt structure.
2. The engine camshaft nut tightening station according to claim 1, characterized in that, The contact surface between the first fixing structure and the camshaft is arc-shaped, and a first buffer structure is arranged on the contact surface between the first fixing structure and the camshaft.
3. The engine camshaft nut tightening station according to claim 1, characterized in that, The contact surface between the second fixing structure and the camshaft is arc-shaped, and a second buffer structure is arranged on the contact surface between the second fixing structure and the camshaft.
4. The engine camshaft nut tightening table according to claim 1, characterized in that, Threads adapted to the abutting structure and the fixing cap structure are arranged on the outer cylindrical surface of the fixing bolt structure, and the abutting structure and the fixing cap structure are threadedly connected to the fixing bolt structure.
5. The engine camshaft nut tightening station according to claim 4, characterized in that, Fasteners for fixing the abutting structure are also threadedly connected to the fixing bolt structure. The fasteners are respectively arranged on both sides of the abutting structure, and the cross-section of the fasteners is smaller than the cross-section of the abutting structure.
6. The engine camshaft nut tightening station according to claim 1, characterized in that The contact surface between the abutting structure and the camshaft is arc-shaped, and a third buffer structure is arranged on the contact surface between the abutting structure and the camshaft.
7. The engine camshaft nut tightening station according to claim 1, characterized in that, A flat placement structure for horizontally placing the camshaft is arranged on the top of the workbench. The contact surface between the flat placement structure and the camshaft is arc-shaped, and a fourth buffer structure is arranged on the contact surface between the flat placement structure and the camshaft.
8. The engine camshaft nut tightening bench according to claim 1, wherein The axle support assembly includes an axle bracket structure arranged on the side of the support structure close to the notch and facing the notch and an axle support seat structure arranged at the top of the axle bracket structure for longitudinally fixing the camshaft.
9. The engine camshaft nut tightening station according to claim 8, characterized in that, The end of the camshaft is movably arranged in the axle support seat structure, and a fifth buffer structure is arranged on the contact surface between the axle support seat structure and the camshaft.
10. The engine camshaft nut tightening bench according to claim 1, characterized in that, The centers of the axle support assembly and the axle fixing assembly are on the same axis.