Universal type intake and exhaust rocker arm shaft adjusting clamp
By designing a universal intake and exhaust rocker shaft adjustment fixture, the problems of low operating efficiency and employee physical injury risk in the prior art are solved, and efficient adjustments to adapt to different models of rocker shafts are achieved, which improves work efficiency and reduces the risk of physical injury.
Patent Information
- Application Number
- CN202421528966.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-28
AI Technical Summary
In the prior art, the adjustment of the intake and exhaust rocker shaft requires the use of two special adjustment fixtures respectively, resulting in low operating efficiency and a risk of physical damage to employees.
A universal type of intake and exhaust rocker shaft adjustment fixture is designed, including a sleeve, fixture shaft and reset part. The fixture shaft can be slidably arranged in the sleeve, and the fixture shaft can be pushed to move through the reset part to adapt to the adjustment of the intake and exhaust rocker shafts of different models, avoiding the cumbersome operation of replacing the fixture.
The clamp can adapt to the adjustment of the intake and exhaust rocker shafts on the same engine model, improves work efficiency and reduces the risk of physical damage caused by employees to lower their heads to replace tools.
Smart Images
Figure CN222697042U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engine assembly, in particular to a universal intake and exhaust rocker arm shaft adjustment fixture. Background Art
[0002] The engine rocker shaft is an important driving component in the valve train. It opens and closes the intake and exhaust valves regularly according to the requirements of the engine's working process. Therefore, it is divided into an intake rocker shaft and an exhaust rocker shaft. The existing intake and exhaust rocker shaft adjustment and assembly uses two fixtures to adjust the intake rocker shaft and the exhaust rocker shaft respectively. The appearance of the intake and exhaust rocker shafts only differs in size, but the intake and exhaust still use special adjustment fixtures. The fixture must be replaced every time an engine is adjusted and assembled. When replacing, the employee needs to bend down to the location where the fixture is stored to take or place it. Such operation greatly affects the work efficiency and is prone to cause physical injuries to employees. Utility Model Content
[0003] The purpose of the utility model is to provide a universal intake and exhaust rocker shaft adjustment fixture, which solves the technical problems of low operating efficiency and risk of physical injury to employees in the prior art. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] The utility model provides a universal intake and exhaust rocker arm shaft adjustment clamp, which includes a sleeve, a clamp shaft and a reset piece. The clamp shaft is slidably arranged in the sleeve, and the clamp end of the clamp shaft is located outside the sleeve. One end of the reset piece is connected to the clamp shaft and the other end is connected to the sleeve. The reset piece has a force that pushes the clamp shaft to move toward the clamp end.
[0006] Preferably, the clamp shaft includes a clamp part and a rotation limiting part, the clamp part and the rotation limiting part are both axial structures and are coaxially connected, the end of the clamp part away from the rotation limiting part is the clamp end, the clamp end is provided with a clamp head, and the rotation limiting part can be slidably arranged in the sleeve.
[0007] Preferably, a removable end cap is provided at one end of the sleeve, the center of the end cap has a through hole, a limiting step is formed between the end cap and the inner wall of the sleeve, the clamp part can be slidably inserted into the through hole, the clamp part has a limiting protrusion, and under normal circumstances, the limiting protrusion is against the limiting step.
[0008] Preferably, the end cover is snap-fitted or threadedly connected to the sleeve.
[0009] Preferably, the sleeve is provided with a rotation limiting hole coaxial with the clamp axis, and the rotation limiting portion is slidably disposed in the rotation limiting hole.
[0010] Preferably, the rotation limiting hole is arranged at one end of the sleeve away from the clamp part, the rotation limiting hole is a square hole, the rotation limiting part is a square shaft, and the rotation limiting part passes through the rotation limiting hole to the outside of the sleeve.
[0011] Preferably, the rotation limiting hole is arranged in the middle of the sleeve, and when the clamp shaft is in a compressed state, the rotation limiting portion is located inside the sleeve.
[0012] Preferably, the reset member is a spring, and the spring is sleeved on the rotation limiting portion. One end of the spring abuts against the inner wall of the sleeve, and the other end abuts against the clamp portion.
[0013] This application adopts the above technical solution, which has at least the following beneficial effects:
[0014] A universal intake and exhaust rocker arm shaft adjustment fixture includes a sleeve, a fixture shaft and a reset piece. The fixture shaft is slidably arranged in the sleeve, and the fixture end of the fixture shaft is located outside the sleeve. One end of the reset piece is connected to the fixture shaft and the other end is connected to the sleeve. The reset piece has a force that pushes the fixture shaft to move toward the fixture end. The fixture shaft is slidably arranged and reset by the reset piece, so that the length of the fixture shaft can be adaptive to adapt to the intake rocker arm and exhaust rocker arm of the engine. The staff does not need to replace the fixture during the adjustment process, thereby improving work efficiency and indirectly reducing the risk of physical injury caused by employees frequently bending down to change tools.
[0015] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 It is a schematic cross-sectional structure diagram of a universal intake and exhaust rocker arm shaft adjustment fixture provided by an embodiment of the utility model;
[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of the sleeve provided in the embodiment of the utility model;
[0019] Figure 3This is a schematic diagram of the main structure of a universal intake and exhaust rocker arm shaft adjustment fixture provided by an embodiment of the utility model;
[0020] Figure 4 It is a left-side structural schematic diagram of a universal intake and exhaust rocker arm shaft adjustment fixture provided by an embodiment of the utility model;
[0021] Figure 5 It is a right view structural schematic diagram of a universal intake and exhaust rocker arm shaft adjustment fixture provided by an embodiment of the utility model.
[0022] In the figure, 1 is a sleeve; 2 is a fixture shaft; 3 is a reset member; 4 is a fixture end; 5 is a fixture portion; 6 is a rotation limiting portion; 7 is a fixture head; 8 is an end cover; 9 is a through hole; 10 is a limiting step; 11 is a limiting protrusion; and 12 is a rotation limiting hole. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.
[0024] The specific embodiment of the utility model provides a universal intake and exhaust rocker arm shaft adjustment fixture, combined with the attached Figure 1 As shown, it mainly includes a sleeve 1, a fixture shaft 2 and a reset member 3.
[0025] The sleeve 1 may be a cylindrical structure with a mounting hole inside. Anti-slip grooves are arranged on the outer wall of the sleeve 1 to facilitate the operator to grasp and apply force.
[0026] The clamp shaft 2 is slidably disposed in the sleeve 1, and the clamp shaft 2 can slide along the axial direction of the sleeve 1. The clamp end 4 of the clamp shaft 2 is located outside the sleeve 1. The clamp head 7 on the clamp end 4 is used to clamp and limit the end of the intake and exhaust rocker arm shaft, so that the intake and exhaust rocker arm shaft can be adjusted by rotating the clamp. The clamp end 4 is kept outside the sleeve 1 in both the extended state and the contracted state of the clamp shaft 2.
[0027] One end of the reset member 3 is connected to the clamp shaft 2 and the other end is connected to the sleeve 1. The reset member 3 has a force to push the clamp shaft 2 to move toward the clamp end 4. The reset member 3 can keep the clamp shaft 2 in an extended state without applying a clamping force. The reset member 3 plays a role in returning the clamp shaft 2 to its original position after pressing the clamp shaft 2.
[0028] The use of the above-mentioned universal intake and exhaust rocker arm shaft adjustment fixture can adapt to the adjustment of both the intake rocker arm shaft and the exhaust rocker arm shaft on the same model of engine. There is no need to perform the complicated operation of replacing the fixture after adjusting one rocker arm, thereby improving work efficiency and indirectly reducing the risk of physical injury caused by employees frequently bending down to change tools.
[0029] In another embodiment of the present application, the clamp shaft 2 may include a clamp portion 5 and a rotation limiting portion 6, both of which are axial structures and are coaxially connected. The end of the clamp portion 5 away from the rotation limiting portion 6 is a clamp end 4, and the clamp end 4 has a clamp head 7. The clamp head 7 can be designed into different structures according to different engine models. The rotation limiting portion 6 can be slidably arranged in the sleeve 1, and the rotation limiting portion 6 is used to limit the rotation of the clamp shaft 2 relative to the sleeve 1, thereby ensuring that the clamp shaft 2 can be driven to rotate when the sleeve 1 is rotated, thereby completing the adjustment of the intake rocker arm shaft and the exhaust rocker arm shaft.
[0030] In some embodiments, an end cover 8 is detachably provided at one end of the sleeve 1, and a through hole 9 is provided at the center of the end cover 8. A limiting step 10 is formed between the end cover 8 and the inner wall of the sleeve 1. The clamp part 5 can be slidably inserted into the through hole 9. The clamp part 5 has a limiting protrusion 11. Under normal circumstances, that is, when the clamp shaft 2 is in an extended state, the limiting protrusion 11 is abutted against the limiting step 10. The limiting protrusion 11 and the limiting step 10 are used to limit the extension length of the clamp shaft 2 and also to limit the clamp shaft 2 from escaping from the sleeve 1.
[0031] Since the end cover 8 is annular, the limiting step 10 is also annular, and the limiting protrusion 11 can also be an annular protrusion.
[0032] In some embodiments, the end cap 8 and the sleeve 1 may be snap-fitted or threadedly connected.
[0033] The sleeve 1 is provided with a rotation limit hole 12 which is coaxial with the clamp shaft 2, and the rotation limit part 6 can be slidably arranged in the rotation limit hole 12. The cooperation between the rotation limit hole 12 and the rotation limit part 6 can limit the rotation of the clamp shaft 2; specifically, the rotation limit hole 12 in the present application can be a polygonal hole and the rotation limit part 6 can be a polygonal columnar body; the rotation limit hole 12 and the rotation limit part 6 can also be designed to be other structural forms that can slide axially but not rotate, such as an elliptical shape, a toothed ring shape, etc.
[0034] In some embodiments, the rotation limiting hole 12 is arranged at one end of the sleeve 1 away from the clamp part 5. The rotation limiting hole 12 is a square hole. The rotation limiting part 6 is a square shaft. The rotation limiting part 6 passes through the rotation limiting hole 12 to the outside of the sleeve 1. At the same time, the end cover 8 and the sleeve 1 can be connected by a snap-fit connection. In this way, the rotation limiting part 6 can be pushed to push out the end cover 8, thereby realizing the disassembly of the end cover 8 and the sleeve 1.
[0035] In some embodiments, the rotation limit hole 12 is set in the middle of the sleeve 1. When the clamp shaft 2 is in a compressed state, the rotation limit part 6 is located in the sleeve 1. In this way, the rotation limit part 6 will not extend out during use. At the same time, the end cover 8 and the sleeve 1 can be threadedly connected, and the end cover 8 can be detached from the sleeve 1 by screwing it.
[0036] In some embodiments, the reset member 3 is a spring, which is sleeved on the rotation limiting portion 6. One end of the spring abuts against the inner wall of the sleeve 1, and the other end abuts against the clamp portion 5. The spring circumferentially supports the clamp shaft 2 so that the force is evenly applied.
[0037] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", "some examples", etc. mean that the specific features, structures, materials or characteristics described in conjunction 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 described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.
[0038] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A universal intake and exhaust rocker arm shaft adjustment fixture, characterized in that: It includes a sleeve, a clamp shaft and a reset member. The clamp shaft is slidably arranged in the sleeve, the clamp end of the clamp shaft is located outside the sleeve, one end of the reset member is connected to the clamp shaft and the other end is connected to the sleeve, and the reset member has a force to push the clamp shaft to move toward the clamp end.
2. The universal intake and exhaust rocker arm shaft adjustment fixture according to claim 1, characterized in that: The clamp shaft includes a clamp part and a rotation limiting part, both of which are axial structures and are coaxially connected, the end of the clamp part away from the rotation limiting part is the clamp end, and the clamp end is provided with a clamp head, and the rotation limiting part can be slidably arranged in the sleeve.
3. The universal intake and exhaust rocker arm shaft adjustment fixture according to claim 2, characterized in that: An end cap is detachably provided at one end of the sleeve, and a through hole is provided at the center of the end cap. A limiting step is formed between the end cap and the inner wall of the sleeve, and the clamp part is slidably provided in the through hole. A limiting protrusion is provided on the clamp part. Under normal circumstances, the limiting protrusion is against the limiting step.
4. The universal intake and exhaust rocker arm shaft adjustment fixture according to claim 3, characterized in that: The end cover is snap-fitted or threadedly connected to the sleeve.
5. The universal intake and exhaust rocker arm shaft adjustment fixture according to claim 2, characterized in that: The sleeve is provided with a rotation limiting hole coaxial with the clamp axis, and the rotation limiting part is slidably arranged in the rotation limiting hole.
6. The universal intake and exhaust rocker arm shaft adjustment fixture according to claim 5, characterized in that: The rotation limiting hole is arranged at one end of the sleeve away from the clamp part, the rotation limiting hole is a square hole, the rotation limiting part is a square shaft, and the rotation limiting part passes through the rotation limiting hole to the outside of the sleeve.
7. The universal intake and exhaust rocker arm shaft adjustment fixture according to claim 5, characterized in that: The rotation limiting hole is arranged in the middle of the sleeve, and when the clamp shaft is in a compressed state, the rotation limiting portion is located inside the sleeve.
8. The universal intake and exhaust rocker arm shaft adjustment fixture according to claim 2, characterized in that: The reset member is a spring, and the spring is sleeved on the rotation limiting portion. One end of the spring abuts against the inner wall of the sleeve, and the other end abuts against the clamp portion.