Interlock fork assembly gauge
By designing an interlocking fork assembly fixture, and utilizing a combination of positioning rods and scales, the problem of requiring multiple fixtures in traditional inspection was solved, enabling efficient multi-dimensional measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING HONGGENG MASCH MFG CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional interlocking fork inspection requires the use of different gauges to measure different dimensions, resulting in low measurement efficiency.
Design an interlocking fork assembly inspection fixture, comprising a base, a positioning structure, a positioning rod, and a scale. The extension and retraction of the positioning rod are used to determine whether the shaft hole size matches, and the depth is calculated using the scale for inspection.
It enables rapid and accurate inspection of interlocking fork shaft holes of different sizes on the same fixture, thus improving measurement efficiency.
Smart Images

Figure CN224382330U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of interlocking fork fixture technology, and specifically discloses an interlocking fork assembly fixture. Background Technology
[0002] An interlocking fork is a type of shift fork designed to prevent mechanical damage caused by engaging two shifters simultaneously. The manufacturing process of an interlocking fork involves multiple steps, including milling, boring, hardening, and inspection.
[0003] After the interlocking fork is machined and assembled, it needs to be inspected, including the inspection of the shaft holes on the interlocking fork shaft. Traditionally, the inspection of the shaft holes of the interlocking fork shaft mainly relies on measuring tools such as vernier calipers, height gauges, and micrometers. Different inspection tools are required when measuring different dimensions, resulting in low measurement efficiency.
[0004] This invention provides an interlocking fork assembly fixture to solve the above-mentioned problems. Utility Model Content
[0005] The purpose of this invention is to solve the problem of low measurement efficiency in the traditional interlocking fork inspection process, which requires the use of different gauges when measuring different sizes.
[0006] To achieve the above objectives, the basic solution of this utility model provides an interlocking fork assembly fixture, including a base. A positioning structure for positioning the interlocking fork shaft is fixedly connected to the top surface of the base. A lifting groove is opened inside the base. Several lifting holes aligned with the lifting groove are opened inward on the top surface of the base. Several positioning rods that can extend out of the lifting holes are also provided inside the base. The dimensions of the positioning rods are the same as the dimensions of the shaft holes on the interlocking fork shaft. A scale is engraved on the outer wall of the positioning rod from top to bottom. The bottom end of the positioning rod extends into the lifting groove. A circular plate is coaxially fixed to a section of the positioning rod located in the lifting groove. A spring is sleeved on the positioning rod below the circular plate.
[0007] Furthermore, a limiting strip is fixed to the outer wall of the positioning rod along the axial direction, and a limiting groove is opened in the positioning hole for the limiting strip to slide inside.
[0008] Furthermore, the top end of the positioning rod is formed with a transition rounded corner.
[0009] Furthermore, the positioning structure includes end clamps detachably connected to both sides of the base, and a positioning plate detachably connected to the base, with the positioning plate disposed on the base between the end clamps on both sides.
[0010] Furthermore, the height of the positioning plate is higher than the height of the end clamp.
[0011] Furthermore, the length of the positioning rod above the circular plate is greater than the height of the positioning hole plus the positioning plate.
[0012] The principle and effect of this solution are as follows:
[0013] Compared with the prior art, the positioning rod 1 and positioning rod 2 of this utility model are pushed out of the lifting hole 1 and lifting hole 2 by the action of the spring, and are fully extended in the free state. During the installation of the interlocking fork shaft, if the inner diameter of the shaft hole of the interlocking fork shaft matches, the positioning rod 1 and positioning rod 2 can pass through the shaft hole and be fully extended. If not, it means that the size does not meet the standard. After the positioning rod 1 and positioning rod 2 are fully extended, the depth of shaft hole 1 and shaft hole 2 can be calculated by the scale exposed on the surface for further inspection. At the same time, since the relative distance between positioning rod 1 and positioning rod 2 is fixed, the gauge between the shaft holes can also be inspected. This solves the problem of low measurement efficiency caused by the need to use different gauges when measuring different dimensions in the traditional interlocking fork inspection process. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 A schematic diagram of an interlocking fork assembly fixture according to an embodiment of this application is shown. Detailed Implementation
[0016] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.
[0017] The reference numerals in the accompanying drawings include: base 1, end clamp 2, positioning plate 3, positioning rod one 4, positioning rod two 5, limit strip 6, circular plate 7, and spring 8.
[0018] An interlocking fork assembly fixture, implementing, for example Figure 1 As shown:
[0019] Includes base 1.
[0020] A positioning structure for positioning the interlocking fork shaft is fixed on the top surface of the base 1. The positioning structure includes end clamps 2, which are bolted to both sides of the base 1, and a positioning plate 3, which is bolted to the base 1. The positioning plate 3 is mounted on the base 1 between the end clamps 2 on both sides. The end clamps 2 are commonly used clamps for fixing the ends of the interlocking fork shaft and shift fork shaft in the prior art, and are mainly used as clamping structures with three-foot chucks.
[0021] Furthermore, the height of the positioning plate 3 is higher than the height of the end clamp 2, and the positioning plate 3 is attached to the surface of the interlocking fork shaft.
[0022] The base 1 also has a lifting groove, and the top surface of the base 1 has two lifting holes aligned with the lifting groove, including lifting hole one and lifting hole two. In this embodiment, the size of lifting hole two is larger than that of lifting hole one, for matching the interlocking fork shaft to be tested in this application. Two positioning rods are also installed in the base 1, namely positioning rod one 4 and positioning rod two 5. The outer diameter of positioning rod one 4 is the same as the inner diameter of lifting hole one, and the outer diameter of positioning rod two 5 is the same as the inner diameter of lifting hole two. Positioning rod one 4 is inserted into lifting hole one, and its top end can protrude from lifting hole one; positioning rod two 5 is inserted into lifting hole two, and its top end can protrude from lifting hole two.
[0023] In this embodiment, the outer walls of positioning rod 4 and positioning rod 5 are both engraved with scales from top to bottom. The bottom ends of positioning rod 4 and positioning rod 5 extend into the lifting groove. A circular plate 7 is coaxially fixedly installed on a section of positioning rod 4 and positioning rod 5 located in the lifting groove. Springs 8 are sleeved on the outside of positioning rod 4 and positioning rod 5 below the circular plate 7.
[0024] Furthermore, both positioning rod 4 and positioning rod 5 have limit strips 6 fixed to their outer walls along the axial direction, and both positioning holes 1 and 2 have limit grooves for the limit strips 6 to slide within. The top ends of both positioning rod 4 and positioning rod 5 are also formed with rounded corners.
[0025] Meanwhile, the lengths of positioning rod 4 and positioning rod 5 above the circular plate 7 are both greater than the height of positioning hole 1 / positioning hole 2 plus positioning plate 3.
[0026] When using this utility model, first clamp the two ends of the interlocking fork shaft to be tested through the end clamps 2 on both sides of the base 1, specifically by clamping with a three-foot chuck, and verticalize the shaft hole on the interlocking fork shaft and align it with the lifting hole one and the lifting hole two respectively.
[0027] During this process, positioning rod 4 and positioning rod 5 are pushed out of lifting hole 1 and lifting hole 2 by spring 8 and fully extended in free state. During the installation of interlocking fork shaft, if the inner diameter of the shaft hole of the interlocking fork shaft matches, positioning rod 4 and positioning rod 5 can pass through the shaft hole and fully extend. If not, it means that the size does not meet the standard.
[0028] After the positioning rod 4 and positioning rod 5 are fully extended, the depth of shaft hole 1 and shaft hole 2 can be calculated by using the scale exposed on the surface for further inspection. At the same time, since the relative distance between positioning rod 4 and positioning rod 5 is fixed, the gauge between the shaft holes can also be inspected.
[0029] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. An interlocking fork assembly inspection fixture, characterized in that, The device includes a base, on the top surface of which is fixed a positioning structure for positioning the interlocking fork shaft. The base has a lifting groove, and the top surface of the base has several lifting holes aligned with the lifting groove. The base also has several positioning rods that can extend out of the lifting holes. The dimensions of the positioning rods are the same as the dimensions of the shaft holes on the interlocking fork shaft. The outer wall of the positioning rod is engraved with a scale from top to bottom. The bottom end of the positioning rod extends into the lifting groove. A circular plate is coaxially fixed to a section of the positioning rod in the lifting groove. A spring is sleeved on the positioning rod below the circular plate.
2. The interlocking fork assembly fixture according to claim 1, characterized in that, The outer wall of the positioning rod is fixed with a limiting strip along the axial direction, and a limiting groove is opened in the positioning hole for the limiting strip to slide inside.
3. The interlocking fork assembly fixture according to claim 1, characterized in that, The top end of the positioning rod is formed with a transition rounded corner.
4. The interlocking fork assembly fixture according to claim 1, characterized in that, The positioning structure includes end clamps that are detachably connected to both sides of the base, and a positioning plate that is detachably connected to the base. The positioning plate is located on the base between the end clamps on both sides.
5. The interlocking fork assembly fixture according to claim 4, characterized in that, The height of the positioning plate is higher than the height of the end clamp.
6. The interlocking fork assembly fixture according to claim 4, characterized in that, The length of the positioning rod above the circular plate is greater than the height of the positioning hole plus the positioning plate.