Combined camshaft capable of improving tightness

Abstract

The utility model relates to the technical field of automobile accessories, and discloses a combined camshaft capable of improving fastening performance, which comprises a first shaft body and a second shaft body, threaded protrusions are arranged on the outer walls of the ends, close to each other, of the first shaft body and the second shaft body, and threaded locking sleeves are sleeved on the outer walls of the ends, close to each other, of the first shaft body and the second shaft body. The inner wall of the threaded locking sleeve is in threaded connection to the outer walls of the threaded protrusions on the two sides, a plurality of cams are evenly and fixedly connected to the outer walls of the first shaft body and the second shaft body, a flange plate is fixedly connected to the outer end of the first shaft body, a plurality of threaded holes are formed in the periphery of the middle of the flange plate, and a threaded groove hole is formed in the middle of the first shaft body. By means of the fastening and locking mechanism, it is ensured that the camshaft cannot loosen or fall off in the working process, friction and impact can be reduced through the stable camshaft, the service life of the camshaft and the service life of adjacent components are prolonged, and the situation that the camshaft is loosened and damaged can be reduced through the good fastening and locking mechanism.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, in particular to a combined camshaft improving fastening. BACKGROUND

[0002] The camshaft is a component in a piston engine, which controls the opening and closing actions of the valve. The camshaft is a cylindrical shaft with a length similar to that of the cylinder group, combined with several cams, used to drive the valve. The camshaft needs to withstand a large torque, so the design requires high strength and support. The material is usually high-quality alloy steel or alloy steel.

[0003] In the prior art, most camshafts are prone to looseness during use, causing vibration and noise, affecting the stability of the engine. The loose camshaft may rub or collide with other parts, causing damage to the camshaft itself or adjacent parts. The looseness of the camshaft may cause the camshaft to lose synchronization with the valve, oil nozzle and other components, affecting the normal operation of the engine. Moreover, the camshaft is generally one-piece, and the entire camshaft needs to be replaced when a part of it is damaged, which is costly.

[0004] Therefore, a combined camshaft improving fastening is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a combined camshaft improving fastening to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a combined camshaft improving fastening, comprising a first shaft body and a second shaft body, the proximal end of the first shaft body and the proximal end of the second shaft body are provided with a threaded protrusion on the outer wall, the proximal end of the first shaft body and the proximal end of the second shaft body are provided with a threaded locking sleeve on the outer wall, the inner wall of the threaded locking sleeve is threadedly connected to the outer wall of the threaded protrusion on both sides, the outer wall of the first shaft body and the outer wall of the second shaft body are uniformly fixedly connected with a plurality of cams, the outer end of the first shaft body is fixedly connected with a flange plate, a plurality of threaded holes are formed around the middle of the flange plate, a threaded slot hole is formed in the middle of the first shaft body, a threaded column is threadedly connected to the inner wall of the threaded slot hole, a plurality of threaded bolts are threadedly connected around the middle of the threaded column, and the outer wall of the threaded bolt is threadedly connected with the inner wall of the threaded hole.

[0007] Preferably, a rectangular hole is formed in the middle of the left and right sides of the flange plate.

[0008] Preferably, a horizontal bar is fixedly connected to the middle of the rectangular hole on both sides.

[0009] Preferably, the outer wall of the crossbar on both sides is sleeved with a connecting spring, and the outer wall of the crossbar on both sides is slidably connected with a special-shaped hook block.

[0010] Preferably, one end of the connecting spring is fixedly connected with the flange plate, and the other end of the connecting spring is fixedly connected with the special-shaped hook block.

[0011] Preferably, the middle part of the inner side of the threaded column is fixedly connected with extrusion blocks on both sides, and the extrusion blocks are matched with the shape and specifications of the rectangular hole.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. By setting the fastening locking mechanism on the outer wall of the first shaft body, the installed camshaft can be tightly locked, the fastening locking mechanism can ensure that the camshaft does not loosen or fall off during work, improves the safety of the engine, the stable camshaft can reduce vibration and noise, improves the stability of the engine, the fastening locking mechanism can ensure the synchronism of the camshaft and other components, guarantees the normal work and performance of the engine, the stable camshaft can reduce friction and impact, prolongs the service life of the camshaft and adjacent components, and the good fastening locking mechanism can reduce the loosening and damage of the camshaft, reduces maintenance cost and frequency.

[0014] 2. By setting the single integral structure camshaft into multiple segments and connecting through the threaded locking sleeve, when a certain segment of the shaft body is damaged and needs to be replaced, only the segment needs to be replaced, and the whole camshaft does not need to be replaced, so that the maintenance cost can be greatly reduced, after adopting the multiple segment structure, the replacement of the damaged part becomes more simple and fast, maintenance time and labor cost are saved, the work amount required for replacing the whole camshaft is reduced, the maintainability and reliability of the equipment are improved, different materials or designed camshaft segments are selected according to needs to meet specific work requirements, and the design flexibility is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure three-dimensional schematic view of the utility model;

[0016] Figure 2 It is a part structure split state schematic view of the utility model;

[0017] Figure 3 It is a front view schematic view of the whole structure of the utility model;

[0018] Figure 4 It is a horizontal section schematic view of the threaded locking sleeve of the utility model;

[0019] Figure 5 It is a whole structure three-dimensional schematic view of the utility model; Figure 4 It is an enlarged schematic view of A in the utility model;

[0020] Figure 6 It is the end horizontal section view schematic diagram of the first shaft body in the utility model.

[0021] In the drawing:

[0022] 1, first shaft body; 2, second shaft body; 3, threaded locking sleeve; 4, threaded protrusion; 5, cam; 6, flange plate; 7, threaded slot hole; 8, threaded column; 9, threaded bolt; 10, threaded hole; 11, rectangular hole; 12, cross bar; 13, connecting spring; 14, special-shaped hook block; 15, extrusion block. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1 to 6 An embodiment provided by the utility model: a combined camshaft for improving fastening, comprising a first shaft body 1 and a second shaft body 2, the outer wall of the proximal end of the first shaft body 1 and the second shaft body 2 is provided with a threaded protrusion 4, the outer wall of the proximal end of the first shaft body 1 and the second shaft body 2 is provided with a threaded locking sleeve 3, the inner wall of the threaded locking sleeve 3 is connected with the outer wall of the threaded protrusion 4 on both sides in a threaded mode, the outer wall of the first shaft body 1 and the second shaft body 2 is uniformly connected with a plurality of cams 5, the outer end of the first shaft body 1 is fixedly connected with a flange plate 6, a plurality of threaded holes 10 are formed in the middle of the flange plate 6, a threaded slot hole 7 is formed in the middle of the first shaft body 1, the inner wall of the threaded slot hole 7 is connected with a threaded column 8 in a threaded mode, a plurality of threaded bolts 9 are connected with the inner wall of the threaded hole 10 in a threaded mode.

[0025] Among them: the first shaft body 1 and the second shaft body 2 are symmetrically arranged with the center line of the threaded locking sleeve 3 as the center;

[0026] Better: the first shaft body 1 and the second shaft body 2 are respectively rotated into the inner wall of the threaded locking sleeve 3 through the threaded convex 4, and then the assembly of the whole camshaft is completed. The single whole structure camshaft is set as multiple sections, and is connected through the threaded locking sleeve 3. When a section of shaft body is damaged and needs to be replaced, only the section needs to be replaced, without replacing the whole camshaft, which can greatly reduce the maintenance cost. After adopting the multi-section structure, the replacement of the damaged part becomes more convenient and fast, saving maintenance time and labor cost, reducing the workload required for replacing the whole camshaft, improving the maintainability and reliability of the equipment, selecting camshaft sections of different materials or designs according to needs to meet specific work requirements, improving the design flexibility, rotating and twisting the threaded column 8 into the inner wall of the threaded groove hole 7 of the flange plate 6, then installing the threaded bolt 9 into the inner wall of the threaded hole 10, and completing the installation of the whole camshaft.

[0027] The middle part of the left and right sides of the flange plate 6 is provided with a rectangular hole 11, and the middle part of the rectangular hole 11 on both sides is fixedly connected with a horizontal rod 12. The outer wall of the horizontal rod 12 on both sides is sleeved with a connecting spring 13, and the outer wall of the horizontal rod 12 on both sides is slidably connected with a special-shaped hook block 14. One end of the connecting spring 13 is fixedly connected with the flange plate 6, and the other end of the connecting spring 13 is fixedly connected with the special-shaped hook block 14. The middle part of the inner side of the threaded column 8 is fixedly connected with an extrusion block 15, and the shape and specification of the extrusion block 15 match those of the rectangular hole 11.

[0028] In the process of rotating the threaded column 8, the two extrusion blocks 15 are correspondingly clamped into the inner wall of the rectangular hole 11, and then the two special-shaped hook blocks 14 are extruded to slide on the outer wall of the horizontal rod 12, and then the connecting spring 13 is extruded to deform, so that the two special-shaped hook blocks 14 can hook the inner wall on the outer wall of the flange plate 6, and the reinforcement and locking are completed, ensuring the stability of the camshaft during operation.

[0029] Better:

[0030] The working principle of the above implementation is as follows:

[0031] The working steps are as follows:

[0032] First, the first shaft body 1 and the second shaft body 2 are respectively rotated into the inner walls of the threaded locking sleeve 3 through the threaded protrusions 4, and then the assembly of the overall camshaft is completed. The single overall structure camshaft is set as multiple sections, and is connected through the threaded locking sleeve 3. When a section of the shaft body is damaged and needs to be replaced, only the section needs to be replaced, and the entire camshaft does not need to be replaced, which can greatly reduce the maintenance cost. After adopting the multi-section structure, the replacement of the damaged part becomes more convenient and fast, the maintenance time and labor cost are saved, the workload required for replacing the entire camshaft is reduced, the maintainability and reliability of the equipment are improved, different materials or designed camshaft sections are selected according to needs to meet specific working requirements, the design flexibility is improved, the threaded column 8 is rotated and twisted into the inner wall of the threaded groove hole 7 of the flange plate 6, the threaded bolt 9 is correspondingly installed into the inner wall of the threaded hole 10, the installation of the overall camshaft is completed, in the process of rotating the threaded column 8, the two side extrusion blocks 15 are correspondingly clamped into the inner wall of the rectangular hole 11, the two side special-shaped hook blocks 14 can be extruded to slide on the outer wall of the horizontal rod 12, the connecting spring 13 is extruded to deform, the two side special-shaped hook blocks 14 can hook the inner wall on the outer wall of the flange plate 6, the reinforcement locking is completed, and the stability of the camshaft during operation is ensured.

[0033] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0034] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A combined camshaft with improved fastening, characterized in that: The utility model provides a kind of double-axis type flange plate, including first shaft body (1) and second shaft body (2), the outer wall of the first shaft body (1) and second shaft body (2) is close to the thread protrusion (4) of one end, the outer wall of the first shaft body (1) and second shaft body (2) is close to the thread locking sleeve (3) of one end, the inner wall of the thread locking sleeve (3) is connected on the outer wall of two sides thread protrusion (4) with screw, the outer wall of the first shaft body (1) and second shaft body (2) is evenly fixedly connected with several cams (5), the outer end of the first shaft body (1) is fixedly connected with flange (6), the middle part of flange (6) is opened with several thread holes (10) around, the middle part of the first shaft body (1) is opened with thread slot hole (7), the inner wall of the thread slot hole (7) is connected with screw column (8) with screw, the middle part of the screw column (8) is connected with several screw bolts (9) around with screw, the outer wall between the screw bolt (9) and the inner wall of thread hole (10) is connected with screw.

2. A combined camshaft for improved fastening according to claim 1, characterized in that: The middle part of the left and right sides of the flange (6) is opened with rectangular hole (11).

3. A combined camshaft for improved fastening according to claim 2, characterized in that: The middle part of the two sides rectangular hole (11) is fixedly connected with cross bar (12).

4. A combined camshaft for improved fastening according to claim 3, characterized in that: The outer wall of the two sides cross bar (12) is sleeved with connecting spring (13), and the outer wall of the two sides cross bar (12) is slidably connected with special-shaped hook block (14).

5. A combined camshaft for improved fastening according to claim 4, characterized in that: The one end of the connecting spring (13) is fixedly connected between flange (6), and the other end of the connecting spring (13) is fixedly connected between special-shaped hook block (14).

6. A combined camshaft for improved fastening according to claim 1, characterized in that: The middle part of the inner side of the screw column (8) is fixedly connected with extrusion block (15) on both sides, and the shape specification of the extrusion block (15) matches with rectangular hole (11).

Images