Straightness testing fixture for shifting fork shaft

Abstract

A straightness gauge for a shift fork shaft relates to the technical field of detection devices and comprises a base, a conversion plate which is used for switching between a horizontal state and a vertical state is arranged on the base in a swinging manner, a fixed support is fixedly connected to the conversion plate, a sliding support is arranged on one side of the fixed support in a sliding manner, and a sliding column parallel to the sliding direction of the sliding support is fixedly connected to the fixed support. A straightness detection meter is arranged on the sliding column in a sliding mode, and the straightness detection meter is further arranged in a sliding mode in the radial direction of the shifting fork shaft. The shift fork shaft straightness detection tool solves the problems that when a shift fork shaft straightness detection tool in the prior art is used, the shift fork shaft is detected horizontally, so that the middle position of the shift fork shaft is easy to droop when the shift fork shaft with a longer length is detected, and the straightness detection precision is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a straightness detection tool for a shift fork shaft. Background Art

[0002] At present, the shift fork shaft used in automobiles has many production processes, and its straightness needs to be fully or selectively tested in many processes. Therefore, the number of inspections is relatively large. The service life of existing inspection jigs is limited, and it is difficult to meet the requirements of accurate inspection. Once the inspection jig is worn, it needs to be replaced or repaired, resulting in high use costs, low inspection efficiency, inaccurate inspection and other problems.

[0003] The prior art discloses a patent with a publication number of CN206177222U, which includes a working platform, a bracket is arranged on the working platform, and a dial indicator is fixedly installed on the bracket; the working platform is provided with a positioning column and a gauge block, the positioning column is fixed on the working platform, one side of the gauge block is provided with a plurality of positioning grooves for being sleeved on the positioning column, and the opening direction of the positioning groove forms an angle of 30-60° with the side of the gauge block; the top of the gauge block is provided with a V-shaped groove for placing the shift fork shaft, and the two side surfaces of the V-shaped groove are also inlaid with hard alloy blocks, which has a simple structure, a long service life, and more accurate measurement.

[0004] As the existing devices including the above patents are used, the shortcomings of the technology are gradually exposed, which are mainly manifested in the following aspects:

[0005] First, when the existing fork shaft straightness detection tools are used, the fork shaft is detected horizontally, which makes it easy for the middle position of the fork shaft to sag when a long fork shaft is detected, affecting the accuracy of the straightness detection.

[0006] Second, since the diameters and lengths of different types of fork shafts are different, it is necessary to customize tooling according to different types of fork shafts, which increases production costs.

[0007] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0008] In view of the defects in the prior art, the utility model solves the problem that the fork shaft straightness detection tool in the traditional technology is used to detect the fork shaft horizontally, which makes it easy for the middle position of the fork shaft to sag when detecting a long fork shaft, affecting the accuracy of straightness detection.

[0009] In order to solve the above problems, the utility model provides the following technical solutions:

[0010] A straightness checker for a fork shaft comprises a base, on which a conversion plate for switching between a horizontal state and a vertical state is swingably provided.

[0011] Therefore, a fixed support is fixedly connected to the conversion plate, a sliding support is slidably provided on one side of the fixed support, a sliding column parallel to the sliding direction of the sliding support is fixedly connected to the fixed support, a straightness detection table is slidably provided on the sliding column, and the straightness detection table is also slidably arranged along the radial direction of the fork shaft.

[0012] As an optimized solution, two supporting wheels are respectively provided between the opposite end surfaces of the fixed support and the sliding support for rotation in parallel, and a clamping wheel is provided in the upper area between the two supporting wheels for vertical sliding.

[0013] As an optimized solution, the hinged end of the conversion plate is vertically fixed with a positioning plate, a positioning hole is opened on the positioning plate, a fixing plate is fixed on the base, a fixing knob is threaded on the fixing plate, and when the conversion plate is in a vertical state, the end of the fixing knob extends into the positioning hole.

[0014] As an optimized solution, a T-shaped slide rail is fixedly connected to the conversion plate, a slide seat is slidably provided on the slide rail, and the lower end of the slide support is fixedly connected to the slide seat.

[0015] As an optimized solution, a stop knob is threadedly connected to the slide seat, and the end of the stop knob abuts against the slide rail.

[0016] As an optimized solution, a sliding sleeve is slidably mounted on the sliding column, a sleeve is fixedly connected to the sliding sleeve, a connecting column is slidably mounted in the sleeve, and the housing of the straightness detection meter is fixedly connected to the connecting column.

[0017] As an optimized solution, a locking knob is threadedly connected to the sleeve, and the end of the locking knob abuts against the connecting column.

[0018] As an optimized solution, the fixed support and the sliding support are provided with rectangular sliding holes corresponding to the pressure wheel, a sliding block is slidably provided in the rectangular sliding hole, and the rotation of the pressure wheel is mounted on the outer wall of the sliding block.

[0019] As an optimized solution, a handle is fixedly connected to the outer wall of the sliding block opposite to the clamping wheel.

[0020] As an optimized solution, sliding grooves are provided on the opposite inner walls of the rectangular sliding hole along the sliding direction of the sliding block, and sliding protrusions constrained in the sliding grooves are fixedly connected to the opposite side walls of the sliding block.

[0021] As an optimized solution, a compression spring is fixedly connected between the upper end of the sliding block and the top of the rectangular sliding hole.

[0022] As an optimized solution, a handle is fixedly connected to the swing end of the conversion plate.

[0023] As an optimized solution, the sliding support is provided with an avoidance hole for avoiding the sliding column.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] The sliding support can be slidably set to achieve matching use of fork shafts of different lengths. The sliding support and the fixed support are respectively provided with two support wheels and a clamping wheel to achieve support and limit of fork shafts of different diameters. After the fork shaft is fixed, the probe end of the straightness detection gauge is placed against the surface of the fork shaft, and the sliding sleeve is slid to make the straightness detection gauge move along the axial direction of the fork shaft to achieve straightness detection of the fork shaft.

[0026] The straightness test table is connected with a sleeve and a connecting column to match the fork shafts of different diameters for use;

[0027] When used on a fork shaft with a shorter length, the conversion plate can be set horizontally. When used on a fork shaft with a longer length, the conversion plate can be set vertically. The positioning plate and the fixing plate can be used to achieve a fixed vertical state. The axis of the fork shaft can be set vertically to avoid drooping, improve detection accuracy, and realize straightness detection of fork shafts of different lengths and diameters using the same tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0029] Figure 1 This is a schematic diagram of the structure of the conversion plate of the utility model in a horizontal state;

[0030] Figure 2 This is a schematic diagram of the structure of the conversion plate of the utility model in a vertical state;

[0031] Figure 3 It is a structural schematic diagram of the rectangular sliding hole of the utility model.

[0032] In the figure: 1-base; 2-conversion plate; 3-fixed support; 4-sliding support; 5-slide rail; 6-slide seat; 7-stop knob; 8-support wheel; 9-pressure wheel; 10-straightness test gauge; 11-slide column; 12-slide sleeve; 13-sleeve; 14-connecting column; 15-locking knob; 16-positioning plate; 17-positioning hole; 18-fixed plate; 19-fixed knob; 20-handle; 21-fork shaft; 22-rectangular slide hole; 23-slider; 24-slide groove; 25-sliding protrusion; 26-handle; 27-compression spring. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0034] like Figures 1 to 3 As shown, the straightness inspection tool for the fork shaft includes a base 1, on which a conversion plate 2 for switching between a horizontal state and a vertical state is swingably provided.

[0035] Therefore, a fixed support 3 is fixedly connected to the conversion plate 2, a sliding support 4 is slidably provided on one side of the fixed support 3, a sliding column 11 parallel to the sliding direction of the sliding support 4 is fixedly connected to the fixed support 3, a straightness detection gauge 10 is slidably provided on the sliding column 11, and the straightness detection gauge 10 is also slidably arranged along the radial direction of the fork shaft 21.

[0036] Two supporting wheels 8 are respectively provided between the opposite end surfaces of the fixed support 3 and the sliding support 4 to rotate in parallel, and a clamping wheel 9 is provided in the upper area between the two supporting wheels 8 to slide vertically.

[0037] The hinged end of the conversion plate is vertically fixed with a positioning plate 16, and a positioning hole 17 is opened on the positioning plate 16. A fixing plate 18 is fixed to the base 1, and a fixing knob 19 is threadedly connected to the fixing plate 18. When the conversion plate is in a vertical state, the end of the fixing knob 19 extends into the positioning hole 17.

[0038] A T-shaped slide rail 5 is fixedly connected to the conversion plate, a slide seat 6 is slidably provided on the slide rail 5 , and the lower end of the slide support 4 is fixedly connected to the slide seat 6 .

[0039] A stop knob 7 is threadedly connected to the slide seat 6 , and the end of the stop knob 7 abuts against the slide rail 5 .

[0040] A sliding sleeve 12 is slidably mounted on the sliding column 11 , a sleeve 13 is fixedly connected to the sliding sleeve 12 , a connecting column 14 is slidably mounted in the sleeve 13 , and a housing of the straightness detection gauge 10 is fixedly connected to the connecting column 14 .

[0041] A locking knob 15 is threadedly connected to the sleeve 13 , and the end of the locking knob 15 abuts against the connecting column 14 .

[0042] The fixed support 3 and the sliding support 4 are provided with a rectangular sliding hole 22 corresponding to the clamping wheel 9 , and a sliding block 23 is slidingly arranged in the rectangular sliding hole 22 , and the rotation of the clamping wheel 9 is mounted on the outer wall of the sliding block 23 .

[0043] A handle 26 is fixedly connected to the outer wall of the sliding block 23 which is opposite to the pressing wheel 9 .

[0044] A sliding groove 24 is formed on the opposite inner wall of the rectangular sliding hole 22 along the sliding direction of the sliding block 23 , and a sliding protrusion 25 constrained in the sliding groove 24 is fixedly connected to the opposite side wall of the sliding block 23 .

[0045] A compression spring 27 is fixedly connected between the upper end of the slider 23 and the top of the rectangular slide hole 22 .

[0046] A handle 20 is fixedly connected to the swing end of the conversion plate 2 .

[0047] The sliding support 4 is provided with an avoidance hole for avoiding the sliding column 11 .

[0048] The working principle of this device is:

[0049] The sliding support 4 can be slidably arranged to achieve matching of fork shafts 21 of different lengths. The sliding support 4 and the fixed support 3 are respectively provided with two support wheels 8 and a clamping wheel 9 to achieve support and limit of fork shafts 21 of different diameters. After the fork shaft 21 is fixed, the probe end of the straightness detection gauge 10 is placed against the surface of the fork shaft 21, and the sliding sleeve 12 is slid to make the straightness detection gauge 10 move axially along the fork shaft 21 to achieve straightness detection of the fork shaft 21.

[0050] The straightness detection table 10 is connected with a sleeve 13 and a connecting column 14 to match the fork shaft 21 with different diameters for use;

[0051] When used for a fork shaft 21 with a shorter length, the conversion plate 2 can be set horizontally. When used for a fork shaft 21 with a longer length, the conversion plate 2 can be set vertically. The positioning plate 16 and the fixing plate 18 are used to achieve a fixed vertical state, and the axis of the fork shaft 21 is set vertically. This can avoid drooping, improve detection accuracy, and realize straightness detection of fork shafts 21 of different lengths and diameters using the same tooling.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. Straightness gauge for fork shaft, characterized by: The invention comprises a base (1), on which a conversion plate (2) for switching between a horizontal state and a vertical state is swingably provided. Therefore, a fixed support (3) is fixedly connected to the conversion plate (2), a sliding support (4) is slidably provided on one side of the fixed support (3), a sliding column (11) parallel to the sliding direction of the sliding support (4) is fixedly connected to the fixed support (3), a straightness detection gauge (10) is slidably provided on the sliding column (11), and the straightness detection gauge (10) is also slidably provided along the radial direction of the shift fork shaft (21).

2. The straightness inspection tool for the fork shaft according to claim 1 is characterized in that: Two support wheels (8) are respectively provided between the opposite end surfaces of the fixed support (3) and the sliding support (4) for rotation in parallel, and a clamping wheel (9) is provided in the upper area between the two support wheels (8) for vertical sliding.

3. The straightness inspection tool for the fork shaft according to claim 2 is characterized in that: A positioning plate (16) is vertically fixed to the hinged end of the conversion plate, a positioning hole (17) is provided on the positioning plate (16), a fixing plate (18) is fixed to the base (1), a fixing knob (19) is threadedly connected to the fixing plate (18), and when the conversion plate is in a vertical state, the end of the fixing knob (19) extends into the positioning hole (17).

4. The straightness inspection tool for the fork shaft according to claim 3 is characterized in that: A T-shaped slide rail (5) is fixedly connected to the conversion plate, a slide seat (6) is slidably provided on the slide rail (5), and the lower end of the slide support (4) is fixedly connected to the slide seat (6).

5. The straightness inspection tool for the fork shaft according to claim 4 is characterized in that: A stop knob (7) is threadedly connected to the slide seat (6), and the end of the stop knob (7) abuts against the slide rail (5).

6. The straightness inspection tool for the fork shaft according to claim 5, characterized in that: A sliding sleeve (12) is slidably mounted on the sliding column (11), a sleeve (13) is fixedly connected to the sliding sleeve (12), a connecting column (14) is slidably mounted inside the sleeve (13), and a housing of the straightness detection gauge (10) is fixedly connected to the connecting column (14).

7. The straightness inspection tool for the fork shaft according to claim 6, characterized in that: A locking knob (15) is threadedly connected to the sleeve (13), and the end of the locking knob (15) abuts against the connecting column (14).

8. The straightness inspection tool for the fork shaft according to claim 7, characterized in that: The fixed support (3) and the sliding support (4) are provided with a rectangular sliding hole (22) corresponding to the clamping wheel (9), a sliding block (23) is slidably provided in the rectangular sliding hole (22), and the rotation of the clamping wheel (9) is mounted on the outer wall of the sliding block (23).

9. The straightness inspection tool for the fork shaft according to claim 8, characterized in that: A sliding groove (24) is provided on the relative inner wall of the rectangular sliding hole (22) along the sliding direction of the sliding block (23), and a sliding protrusion (25) constrained in the sliding groove (24) is fixedly connected to the relative side wall of the sliding block (23).

10. The straightness inspection tool for the fork shaft according to claim 9, characterized in that: A compression spring (27) is fixedly connected between the upper end of the sliding block (23) and the top of the rectangular sliding hole (22).

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