CN203519414U - Curved surface supporting device of Leeb hardness tester - Google Patents

Abstract

The utility model provides a support device for a curved surface of a Leeb hardness tester. The support device for a curved surface of a Leeb hardness tester includes: a support frame, and the support frame includes: a plurality of support legs, a support block connected with the support legs, and a straight hole arranged in the support block, each support leg has a support foot, the support block is located above the support foot; a support ring, the support ring includes: an annular disc at the bottom and a The tube body above the annular disk, the tube body is detachably connected to the bottom end of the impact rod of the Leeb hardness tester, and the tube body can be moved up and down in the straight hole in the support block; the spring , sleeved on the pipe body, and the spring is located between the annular disk and the straight hole. The utility model is simple in structure, reliable and durable.

Description

Leeb hardness tester surface support device

technical field

The utility model relates to the field of hardness testing equipment manufacturing, in particular to a curved surface support device for a Leeb hardness tester.

Background technique

The Leeb Hardness Tester is mainly used for rapid on-site hardness testing, and its error is often related to the operation of the on-site inspectors. During the inspection process, it is necessary to ensure that the ball head impacts the surface to be tested in a vertical direction, which requires the inspectors to control the surface by themselves. The direction of the Leeb hardness tester is often difficult to control the verticality of the Leeb hardness tester for symmetrical curved workpieces such as bolts and pipes that are common in field tests, resulting in increased measurement errors.

The current Leeb hardness testers on the market can often be equipped with curved surface test support rings, which are only designed for fixed curved surfaces and cannot adapt to various curvature surfaces encountered in field tests.

Utility model content

The utility model provides a curved surface support device for a Leeb hardness tester to solve the problem that the Leeb hardness tester cannot adapt to various curvature surfaces encountered in on-site testing.

For this reason, the utility model proposes a kind of Leeb hardness tester curved surface support device, described Leeb hardness tester curved surface support device comprises:

A support frame, the support frame includes: a plurality of support legs, a support block connected to the support legs, and a straight hole arranged in the support block, each support leg has a support foot, and the support block is located at above the support foot;

A support ring, the support ring includes: an annular disc at the bottom and a tube connected to the annular disc, the tube is detachably connected to the bottom end of the impact rod of the Leeb hardness tester, and the tube The body can move up and down in the straight hole in the support block;

A spring is sheathed on the pipe body, and the spring is located between the annular disc and the straight hole.

Further, the number of the supporting legs is four.

Further, the straight hole is a positioning hole, and a positioning groove is provided in the straight hole to restrict the turning of the pipe body in the straight hole.

Further, the pipe body is provided with positioning ribs matching the shape of the positioning groove.

Further, the supporting area formed between the plurality of supporting legs is larger than the area of the annular disc.

Further, it is characterized in that the pipe body has an internal thread connected with the bottom end of the impact rod of the Leeb hardness tester.

Further, the height of each support leg is greater than the height of the pipe body.

Further, the support block is in the shape of a cuboid.

Further, the height of each supporting leg is 20 to 40 mm, and the height of the tube body is 10 mm.

Since the support legs are supported on the workpiece to be tested, through the up and down movement of the tube body on the support ring, the annular disk can always be kept tangent to the test points on the curved surface of various tested workpieces through the position adjustment after the movement. Ensure the impact direction of the test steel ball and improve the test accuracy. For curved surfaces with different curvatures, the annular disk can be tangent to the test points on different curved surfaces through the difference in the distance of the pipe body moving up and down.

Description of drawings

Fig. 1 is the schematic diagram of the exploded structure of the Leeb hardness tester curved surface supporting device of the present invention;

Fig. 2 is the top view structure of the support frame of the present utility model;

Fig. 3 is a top view structure of the support ring of the present invention.

Explanation of reference numbers:

1 Support frame 3 Support ring 5 Spring 7 Leeb hardness tester impact rod 11 Support leg 111 Support foot 13 Support block 131 Straight hole 1310 Positioning groove 31 Ring disc 33 Tube body 330 Positioning rib 70 The bottom end of Leeb hardness tester impact bar

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the utility model is now described with reference to the accompanying drawings.

As shown in Figure 1, the surface support device of the Leeb hardness tester includes:

support frame 1,

As shown in Figure 2, the support frame 1 includes: a plurality of support legs 11, a support block 13 connected to the support legs, and a straight hole 131 arranged in the support block, each support leg 11 has a A support foot 111, the support block 13 is located above the support foot 111; the support leg 11 is used to control the surface of the Leeb hardness tester support ring (annular disc 31) to align with the curved surface section. As shown in Figure 2, the number of the supporting legs is four, for example, and the four supporting legs 111 form a rectangle, so that the support is stable and symmetrical;

Support ring 3, as shown in Figure 3, described support ring 3 comprises: the annular disc 31 of the bottom and the pipe body 33 that is connected on the described annular disc, described pipe body and the bottom end of the impact rod of Leeb hardness tester 70 is a detachable connection or a detachable connection, and the pipe body 33 is arranged in the straight hole 131 in the support block so that it can move up and down;

The spring 5 is sleeved on the tube body 33 , and the spring 5 is located between the annular disk 31 and the straight hole 131 , or the spring 5 is located between the annular disk 31 and the supporting block 13 . The caliber of the spring 5 is larger than the caliber of the straight hole 131, so as to prevent the spring 5 from losing its working position.

Further, as shown in FIG. 2 , the straight hole 131 is a positioning hole, such as a circular hole, and the straight hole is provided with a positioning groove 1310 that restricts the tube body 33 from turning over in the straight hole, such as As shown in Figure 3, the tube body 33 is, for example, a hollow circular tube, and the tube body is provided with a positioning rib 330 matching the shape of the positioning groove, so as to ensure that the tube body 33 does not rotate during the test, thereby ensuring that the test stability.

Further, as shown in FIG. 1 , the supporting area formed between the plurality of supporting legs 11 is larger than the area of the annular disk 31 , so as to form a stable support for the annular disk 31 .

Further, the pipe body 33 has an internal thread connected with the bottom end 70 of the Leeb hardness impact rod, so that it can form a stable connection with the Leeb hardness impact rod 7 during testing and is easy to disassemble.

Further, the height of each support leg 11 is greater than the height of the tube body 33 so as to make the annular disk 31 contact or flush with the test curved surface.

Further, the support block 13 is in the shape of a cuboid or flat for processing.

Further, the height of each support leg is 20 to 40mm, and the height of the tube body is 10mm, so as to provide enough space for the annular disc 31 to contact or flush with the test curved surface, and increase the types and range of test curved surfaces.

In the utility model, the spring is purchased from the market, and the support frame and the support ring can use carbon steel as a raw material, and different parts of the parts are precisely processed by a lathe and a planer, and then connected by welding, and assembled and spliced. The support frame and support ring can also be precision die-cast from aluminum-magnesium alloy, which can be molded at one time and then assembled and spliced.

The assembly process is as follows: insert the pipe body 33 into the straight hole 131, then put the spring 5 on the pipe body 33, and screw the internal thread on the top of the pipe body 33 into the external thread on the lower end 70 of the impact rod of the Leeb hardness tester, and the entire inner thread The surface support device of the hardness tester is assembled.

Since the supporting legs are supported on the workpiece to be tested, through the up and down movement of the tube body on the supporting ring, the annular disk can always be kept tangent to the test points on various curved surfaces through the position adjustment after the movement, ensuring that the test steel ball The impact direction can improve the test accuracy. For curved surfaces with different curvatures, the annular disk can be tangent to the test points on different curved surfaces through the difference in the distance of the pipe body moving up and down.

The utility model is simple in structure, reliable and durable.

The above descriptions are only illustrative specific implementations of the present utility model, and are not intended to limit the scope of the present utility model. Because the components of this utility model can be combined with each other under the condition of no conflict, any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principles of this utility model shall belong to this utility model. The scope of utility model protection.

Claims (9)

1. a Leeb Hardness Tester curved surface supportive device, is characterized in that, described Leeb Hardness Tester curved surface supportive device comprises:

Bracing frame, support frame as described above comprises: a plurality of supporting legs, the back-up block being connected with described supporting leg and be arranged on the straight hole in described back-up block, each supporting leg has a feet, and described back-up block is positioned at the top of described feet;

Support ring, described support ring comprises: the annular disk of bottom and be connected to the body on described annular disk, described body is connected for dismantling with the bottom of Leeb Hardness Tester impact bar, and what described body can move up and down is arranged in the straight hole in described back-up block;

Spring, is set on described body, and described spring is between described annular disk and described straight hole.

2. Leeb Hardness Tester curved surface supportive device as claimed in claim 1, is characterized in that, the number of described supporting leg is four.

3. Leeb Hardness Tester curved surface supportive device as claimed in claim 1, is characterized in that, described straight hole is pilot hole, is provided with the locating slot that the described body of restriction overturns in described straight hole in described straight hole.

4. Leeb Hardness Tester curved surface supportive device as claimed in claim 3, is characterized in that, described body is provided with the positioning bar that the shape with described locating slot matches.

5. Leeb Hardness Tester curved surface supportive device as claimed in claim 2, is characterized in that, the Area of bearing forming between a plurality of described supporting legs is greater than the area of described annular disk.

6. Leeb Hardness Tester curved surface supportive device as claimed in claim 1, is characterized in that, described body has the internal thread being connected with the bottom of Leeb Hardness Tester impact bar.

7. Leeb Hardness Tester curved surface supportive device as claimed in claim 2, is characterized in that, described in each, the height of supporting leg is greater than the height of described body.

8. Leeb Hardness Tester curved surface supportive device as claimed in claim 2, is characterized in that, described back-up block is cuboid.

9. Leeb Hardness Tester curved surface supportive device as claimed in claim 2, is characterized in that, described in each, the height of supporting leg is 20 to 40mm, and the height of described body is 10mm.

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