Rapid clamping and assembling device for signal wheel of camshaft

Abstract

The utility model discloses a rapid clamping and assembling device for a camshaft signal wheel, relates to the technical field of camshaft signal wheel assembling, and aims at solving the problems that a traditional interference fit press-fitting or welding process is complex in operation, parts are prone to being damaged, and repeated disassembly and assembly cannot be achieved, and rapid clamping is achieved through a split type clamping wheel and multi-bolt cooperative locking structure. The device comprises a hinged type semicircular clamping wheel arranged at the end of a cam shaft in a sleeving mode, the outer side of the clamping wheel extends to the annular face of a signal wheel through a connecting arm, a T-shaped locking bolt is arranged at the tail end of the connecting arm to abut against the signal wheel in the radial direction, the two ends of the clamping wheel are pulled and tightly hold the cam shaft through butterfly bolts, and elastic extrusion bolts are arranged in the side wall to compensate axial gaps. Axial-radial combined clamping is formed; the T-shaped bolt anti-falling design is combined with the single-hand opening and closing characteristic of the rotating shaft hinge.

Description

Technical Field

[0001] This utility model provides an assembly device, and particularly relates to a quick clamping assembly device for a camshaft signal wheel. Background Technology

[0002] Traditional camshaft signal wheel assembly devices typically use interference fits or welding to achieve shaft-wheel connections. The core structure of such devices is an integral clamp or rigid sleeve, relying on mechanical pressure to force the signal wheel into the camshaft end, or forming a permanent connection through high-temperature welding. However, interference fits require high-precision machining and hydraulic pressure, which can easily cause deformation of the thin-walled structure of the signal wheel; welding processes carry the risk of material degradation in the heat-affected zone, and neither method allows for repeated assembly and disassembly. More importantly, existing devices lack rapid adjustment and self-adaptive locking mechanisms, resulting in repeated calibration and positioning during assembly, low operational efficiency, and difficulty in adapting to the mixed-line production needs of signal wheels of different specifications.

[0003] While existing improved devices incorporate a split clamp structure, their locking units often employ single-bolt radial fastening or an integral pressure plate design. Due to their singular locking dimension and excessive component integration, such structures still present a trade-off between clamping stability and ease of operation: over-reliance on bolt preload can damage the signal wheel teeth, while simplifying the locking process reduces assembly rigidity. Furthermore, traditional devices lack anti-bolt loosening mechanisms, making them prone to connection failure under vibration conditions, directly impacting the accuracy of engine phase signal detection. Utility Model Content

[0004] In order to solve the above problems, this application provides a quick clamping and assembly device for camshaft signal wheels, which solves the problems of low efficiency, non-repeatable disassembly and assembly, and easy damage to signal wheels caused by traditional interference fit.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a camshaft signal wheel quick clamping assembly device, including a camshaft, wherein a signal wheel is connected to one end of the camshaft through a sleeved connecting structure;

[0006] The connection structure includes a pair of movable connecting rollers. Several evenly distributed connecting arms are fixedly connected to the side of the rollers near the signal wheel. A locking bolt that passes through the connecting arm is provided on the end of the connecting arm away from the roller.

[0007] Preferably, the chuck is a semi-circular arc-shaped plate, and the ends of the chucks that are close to each other are movably connected through a rotating shaft structure; the ends of the chucks that are far apart from each other are integrally connected with a protrusion, and the protrusion is provided with a butterfly bolt that passes through itself.

[0008] Preferably, a compression bolt penetrating the side wall of the chuck is provided between the rotating shaft structure and the protrusion, and the compression bolt is placed entirely inside the chuck.

[0009] Preferably, the locking bolts, wing bolts, and clamping bolts are all T-shaped structures, which limit their maximum movement distance and prevent them from falling off.

[0010] Preferably, the locking bolt and the annular portion of the signal wheel are in contact.

[0011] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0012] This invention achieves rapid clamping of the camshaft signal wheel through a split-type chuck structure combined with a multi-bolt collaborative locking mechanism, solving the problems of complex operation, time-consuming process, and easy damage to components in traditional assembly. Specifically: two semi-circular chucks hinged by a rotating shaft form an openable clamping structure, which quickly locks the camshaft using butterfly bolts; the connecting arm extends to the ring surface of the signal wheel, and uses T-type locking bolts for radial fastening, combined with the elastic deformation characteristics of the built-in extrusion bolts, forming axial-radial double clamping; the T-type bolt anti-loosening design improves operational efficiency while ensuring assembly stability; the modular combination of chucks and bolts replaces the traditional interference fit or welding process, avoiding the risk of high-temperature deformation and enabling repeated disassembly and assembly, significantly shortening working time and reducing the scrap rate of parts.

[0013] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of a camshaft signal wheel quick clamping and assembly device according to the present invention;

[0015] Figure 2 This is a schematic diagram of another state connection structure of the camshaft signal wheel quick clamping and assembly device of this utility model;

[0016] Figure 3 This is a cross-sectional view of the connection structure of a camshaft signal wheel quick clamping and assembly device according to the present invention;

[0017] Figure 4 This is an exploded view of the connection structure of a quick clamping and assembly device for a camshaft signal wheel according to this utility model.

[0018] As shown in the figure:

[0019] 1. Camshaft; 2. Connecting structure; 3. Signal wheel; 4. Casing wheel; 5. Connecting arm; 6. Locking bolt; 7. Rotary shaft structure; 8. Protrusion; 9. Wing bolt; 10. Extrusion bolt. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] like Figure 1 and Figure 2 As shown, a quick clamping and assembly device for a camshaft signal wheel is based on a camshaft 1, with a signal wheel 3 connected to one end of the camshaft via a sleeved connecting structure 2. The connecting structure 2 includes a pair of movably connected chucks 4. The chuck 4 near the signal wheel 3 is fixedly connected to several evenly distributed connecting arms 5. The end of each connecting arm 5 away from the chuck 4 is provided with a locking bolt 6 that penetrates through it. The locking bolt 6 contacts the annular portion of the signal wheel 3. The quick clamping and assembly of the signal wheel is achieved through the coordinated action of these components.

[0024] In this embodiment, the chuck 4 is a semi-circular arc-shaped plate. Its two ends, which are close to each other, are movably connected by a rotating shaft structure 7, while the two ends, which are far apart, are integrally connected with a protrusion 8. A wing bolt 9 is inserted through the protrusion 8. A pressing bolt 10 is also provided between the rotating shaft structure 7 and the protrusion 8, penetrating the side wall of the chuck 4. The pressing bolt 10 is entirely placed inside the chuck 4, and the locking bolt 6, the wing bolt 9, and the pressing bolt 10 are all T-shaped structures to limit their maximum movement distance and prevent them from falling off.

[0025] From the perspective of clamping efficiency: During implementation, this device, through the use of a pair of movable connecting chucks 4, along with several evenly distributed connecting arms 5 and locking bolts 6, can quickly clamp the signal wheel 3 onto the end of the camshaft 1. During clamping, first open the chucks 4, slip the signal wheel 3 onto one end of the camshaft 1, then close the chucks 4, and finally tighten the locking bolts 6 by passing them through the connecting arms 5 and contacting the annular portion of the signal wheel 3. This completes the clamping process. No complex tools or cumbersome procedures are required, significantly reducing clamping time and improving assembly efficiency.

[0026] From the perspective of structural stability and reliability: the semi-circular arc design of the camshaft 4 and its movable connection with the rotating shaft structure 7 ensure that the camshaft 4 can fit tightly against the camshaft 1, providing stable support. The wing bolt 9, which passes through the protrusion 8, further reinforces the closed state of the camshaft 4, while the clamping bolt 10 enhances the clamping force of the camshaft 4 from the side. This multi-point force makes the signal wheel 3 more securely clamped on the camshaft 1. The T-shaped design of each bolt prevents it from falling off, ensuring the reliability of the device during long-term use.

[0027] From the perspective of innovation and practical application value: This device innovatively combines the movable chuck 4, the evenly distributed connecting arms 5, and various T-bolts, solving the problems of low efficiency and easy loosening of traditional clamping methods. In practical applications, it can not only quickly complete the clamping and assembly of the signal wheel 3, but also ensure the connection stability and reliability between the signal wheel 3 and the camshaft 1, reducing the risk of mechanical failure caused by the loosening of the signal wheel 3. This is of great significance for improving engine assembly efficiency and operational stability.

[0028] like Figure 3 and Figure 4 As shown, the chuck 4 is a semi-circular arc-shaped plate. The ends close to each other are movably connected via a rotating shaft structure 7, while the ends furthest apart are integrally connected to a protrusion 8. A wing bolt 9 passes through the protrusion 8. A clamping bolt 10, penetrating the sidewall of the chuck 4 and entirely contained within it, is also provided between the rotating shaft structure 7 and the protrusion 8. Furthermore, the locking bolt 6, wing bolt 9, and clamping bolt 10 are all T-shaped structures, limiting the maximum movement distance to prevent detachment and ensuring the stability and reliability of the device connection.

[0029] In this implementation scheme, in the prior art, the assembly of the camshaft signal wheel mainly relies on an interference fit press-fit process: first, the end of the camshaft is placed in a heating furnace to expand, or the inner hole of the signal wheel is cooled and contracted by liquid nitrogen, and then the two are pressed into a fit by a hydraulic press, forming an interference connection after cooling; while the welding process requires pre-machining a bevel on the contact surface between the camshaft and the signal wheel, and after positioning, argon arc welding or laser welding is used to continuously weld along the circumference to form a permanent connection. For existing split-type clamp devices, the operation process is to cover the camshaft surface with two half-ring clamps, tighten the axial through bolts to make the inner wall of the half-ring fit against the outer circle of the camshaft, and then fix it by connecting the pre-threaded hole on the end face of the signal wheel to the outer wall of the clamp with bolts. When disassembling, the axial bolts must be completely loosened and the half-rings separated. During the assembly of this type of device, the circumferential angle between the signal wheel and the clamp bolts needs to be manually adjusted, and due to the lack of axial restraint, additional anti-loosening shims or secondary spot welding are required to prevent loosening. Furthermore, traditional clamp bolts typically have standard hexagonal heads, requiring a wrench for step-by-step tightening. Under vibration conditions, these bolts are prone to slippage due to alternating loads, necessitating periodic retightening. This solution, while inheriting the quick-closing characteristics of split clamps, utilizes a pivot hinge to enable one-handed opening and closing of the clamp wheel. The manual, quick-locking of the wing bolt replaces wrench operation. The radial pressure of the T-type locking bolt and the axial elastic preload of the compression bolt create multi-dimensional constraints. Simultaneously, the signal wheel ring directly contacts the locking bolt end face, eliminating the need for auxiliary components such as gaskets and locating pins found in traditional devices. Assembly requires only four steps: unfolding the clamp wheel, engaging the camshaft, tightening the wing bolt, and adjusting the locking bolt to press against the signal wheel ring. Disassembly is performed in reverse and does not require complete bolt separation, significantly reducing operational complexity and tool dependence.

[0030] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A quick clamping and assembly device for a camshaft signal wheel, comprising a camshaft (1), characterized in that: One end of the camshaft (1) is externally connected to a signal wheel (3) via a sleeved connecting structure (2); The connection structure (2) includes a pair of movable connecting rollers (4). Several evenly distributed connecting arms (5) are fixedly connected to the side of the rollers (4) near the signal wheel (3). A locking bolt (6) that passes through the connecting arm (5) is provided on the end of the connecting arm (5) away from the rollers (4).

2. The camshaft signal wheel quick clamping and assembly device according to claim 1, characterized in that: The chuck (4) is a semi-circular arc plate. The ends of the chuck (4) that are close to each other are connected by a rotating shaft structure (7). The ends of the chuck (4) that are far apart from each other are integrally connected with a protrusion (8). The protrusion (8) is provided with a butterfly bolt (9) that passes through itself.

3. The camshaft signal wheel quick clamping and assembly device according to claim 2, characterized in that: A pressing bolt (10) is provided between the rotating shaft structure (7) and the protrusion (8) and penetrates the side wall of the chuck (4). The pressing bolt (10) is placed inside the chuck (4).

4. The camshaft signal wheel quick clamping and assembly device according to claim 3, characterized in that: The locking bolt (6), wing bolt (9) and clamping bolt (10) are all T-shaped structures, which limit their maximum movement distance and prevent them from falling off.

5. The camshaft signal wheel quick clamping and assembly device according to claim 1, characterized in that: The locking bolt (6) and the annular portion of the signal wheel (3) are in contact.

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