Clamp for measuring strength of single chain tooth

Abstract

The utility model relates to the technical field of zipper tooth strength detection, in particular to a clamp for measuring the strength of a single zipper tooth, which comprises a clamp body and a clamping piece, and the clamping end of the clamp body is symmetrically provided with clamping grooves matched with the shape of a protruding part of the zipper tooth. The clamping piece is installed on the clamp body and used for clamping the clamp body. According to the utility model, the clamping end of the clamp body is symmetrically provided with the clamping grooves matched with the shape of the convex parts of the zipper teeth, and the convex parts of the zipper teeth are just clamped during clamping, so that the zipper teeth cannot be damaged by clamping, and the data for testing the bonding strength of the zipper teeth and the cloth tape is stable and real; and the data distortion of the binding strength of the tested zipper teeth and the cloth tape after the zipper teeth are pinched is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of chain tooth strength detection, and particularly relates to a fixture for measuring the strength of a single chain tooth. Background Art

[0002] The single-tooth strength test of a zipper is a method for measuring the tooth strength of a zipper. The test method is as follows:

[0003] Select a zipper of appropriate length, open it, and clean it. Clamp the zipper on the fixture so that the tooth to be tested is in the middle position. Apply a certain force to the tooth until it breaks. Test equipment such as a universal testing machine can be used to control the magnitude of the applied force. Record the magnitude of the force applied when the zipper breaks, and calculate the strength of a single tooth of the zipper.

[0004] The following points need to be noted during the test:

[0005] The zipper used in the test should be representative to ensure the accuracy of the test results. The magnitude of the applied force should be within a certain range. Too small a force will result in the test not accurately reflecting the strength of the zipper teeth, and too large a force will cause the rupture of the zipper to be at a position other than the tooth to be tested. To avoid interference factors in the test, the zipper should be kept in a stable state during the test, and attention should also be paid to the clamping force of the fixture.

[0006] Therefore, the selection of the fixture is particularly important, which should not only ensure the accuracy of the test data but also not damage the chain teeth. Summary of the Utility Model

[0007] The utility model solves the problems in the related art and provides a fixture for measuring the strength of a single chain tooth. The clamping ends of the fixture body are symmetrically provided with clamping grooves matching the shape of the convex parts of the chain teeth. When clamping, it just clamps on the convex parts of the chain teeth, and the chain teeth will not be damaged, ensuring the stability and authenticity of the data of the combined strength of the test chain teeth and the cloth tape, and avoiding the distortion of the data of the combined strength of the chain teeth and the cloth tape after the chain teeth are damaged.

[0008] To solve the above technical problems, the utility model is realized through the following technical solutions: A fixture for measuring the strength of a single chain tooth, comprising a fixture body and a clamping member. The clamping ends of the fixture body are symmetrically provided with clamping grooves matching the shape of the convex parts of the chain teeth, and the clamping member is installed on the fixture body and used for clamping the fixture body.

[0009] As a preferred solution, the fixture body includes a first jaw and a second jaw, and one ends of the first jaw and the second jaw are installed on a fixed seat through a movable pin.

[0010] As a preferred solution, the clamping member includes a spring, a clamping bolt and a clamping nut. The clamping bolt passes through the second jaw and abuts against the first jaw. The spring is sleeved on the clamping bolt and its two ends respectively abut against the first jaw and the second jaw. The clamping nut is threadedly connected to the clamping bolt and is located outside the first jaw.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The clamping ends of the fixture body of the present utility model are symmetrically provided with clamping grooves that match the shape of the raised parts of the chain teeth. During clamping, it just clamps on the raised parts of the chain teeth, and the chain teeth will not be clamped and damaged, ensuring the stability and authenticity of the data of the bonding strength between the test chain teeth and the fabric belt, and avoiding the distortion of the data of the bonding strength between the chain teeth and the fabric belt after the chain teeth are clamped and damaged; Clamping is carried out through the clamping nut and the clamping bolt, the operation is simple and convenient, and when the clamping nut is loosened, the first jaw and the second jaw will automatically separate from the chain teeth under the tension of the spring. Description of the Drawings

[0012] Figure 1 is the overall structural schematic diagram of the present utility model;

[0013] Figure 2 is the present utility model Figure 1 the enlarged view at F in.

[0014] In the figure:

[0015] 1, fixed seat; 2, first jaw; 3, second jaw; 4, movable pin; 5, spring; 6, clamping bolt; 7, clamping nut; 8, chain teeth; 81, clamping groove. Detailed Embodiments

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0017] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0018] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as limiting the protection scope of the present utility model; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0020] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above-mentioned", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0021] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without otherwise stating, the above words have no special meaning, and thus cannot be construed as limiting the protection scope of the present utility model.

[0022] such asFigures 1 to 2 As shown in Figures 1 to 2 , a fixture for measuring the strength of a single tooth of a chain includes a fixture body and a clamping member. The clamping ends of the fixture body are symmetrically provided with clamping grooves 81 that match the shape of the convex parts of the chain teeth 8. When clamping, it just clamps on the convex parts of the chain teeth 8, and the chain teeth 8 will not be damaged. This ensures that the data of the combined strength between the test chain teeth 8 and the fabric belt is stable and true, and avoids the distortion of the data of the combined strength between the chain teeth 8 and the fabric belt after the chain teeth 8 are damaged; the clamping member is installed on the fixture body and is used for clamping the fixture body.

[0023] In one embodiment, the fixture body includes a first jaw 2 and a second jaw 3. One ends of the first jaw 2 and the second jaw 3 are installed on a fixed seat 1 through a movable pin 4. The fixed seat 1 is connected to the upper interface of the strength testing device during operation. The fabric belt of the chain teeth 8 is connected and fixed to the lower interface of the strength testing device during operation. During operation, the strength testing device pulls the chain teeth 8 in the opposite direction of the fabric belt until the chain teeth 8 are pulled out of the fabric belt, so that the combined strength between the chain teeth 8 and the fabric belt can be measured.

[0024] In one embodiment, the clamping member includes a spring 5, a clamping bolt 6 and a clamping nut 7. The clamping bolt 6 passes through the second jaw 3 and abuts against the first jaw 2. The spring 5 is sleeved on the clamping bolt 6 and its two ends respectively abut against the first jaw 2 and the second jaw 3. The clamping nut 7 is threadedly connected to the clamping bolt 6 and is located outside the first jaw 2. When in use, by tightening the clamping nut 7, the first jaw 2 and the second jaw 3 are clamped. At this time, the clamping groove 81 clamps on the convex parts of the chain teeth 8, and the first jaw 2 and the second jaw 3 will not slip off the chain teeth 8. When the clamping nut 7 is loosened, the first jaw 2 and the second jaw 3 automatically leave the chain teeth 8 under the tension of the spring 5.

[0025] The above is the preferred embodiment of the present utility model. Those skilled in the art of the present utility model can also make changes and modifications to the above embodiments. Therefore, the present utility model is not limited to the above specific embodiments. Any obvious improvements, substitutions or variations made by those skilled in the art on the basis of the present utility model all belong to the protection scope of the present utility model.

Claims

1. A fixture for measuring the strength of a single chain tooth, characterized in that: It includes a fixture body and a clamping member. Clamping grooves (81) matching the shape of the raised parts of the chain teeth (8) are symmetrically arranged at the clamping ends of the fixture body, and the clamping member is installed on the fixture body and used for clamping the fixture body.

2. The fixture for measuring the strength of a single tooth of a chain according to claim 1, characterized in that: The fixture body includes a first jaw (2) and a second jaw (3). One ends of the first jaw (2) and the second jaw (3) are installed on a fixed seat (1) through a movable pin (4).

3. The jig for measuring the strength of a single tooth of a chain according to claim 1, characterized in that: The clamping member includes a spring (5), a clamping bolt (6) and a clamping nut (7). The clamping bolt (6) passes through the second jaw (3) and abuts against the first jaw (2). The spring (5) is sleeved on the clamping bolt (6), and both ends thereof respectively abut against the first jaw (2) and the second jaw (3). The clamping nut (7) is threadedly connected to the clamping bolt (6) and is located outside the first jaw (2).

Images