CN221506497U

CN221506497U - A four-point bending test fixture device

Info

Publication number: CN221506497U
Application number: CN202323071740.8U
Authority: CN
Inventors: 庞彦宾
Original assignee: Xi'an Hengyi Boyuan Test Technology Co ltd
Current assignee: Xi'an Hengyi Boyuan Test Technology Co ltd
Priority date: 2023-11-14
Filing date: 2023-11-14
Publication date: 2024-08-09
Anticipated expiration: 2033-11-14

Abstract

The utility model discloses a four-point bending test fixture device, including a fixed base frame, a vertical slide groove is provided on the fixed base frame, a lower equipment seat is fixedly connected to the lower part of the fixed base frame, a lifting and adjusting unit is provided on the upper part of the fixed base frame, and an upper clamping unit is fixedly connected to the lifting and adjusting unit. The utility model belongs to the technical field of mechanical testing devices, specifically a four-point bending test fixture device, which effectively solves the problem that the four-point bending test fixture device on the market is relatively simple in structure, needs to be adjusted manually, has low operating efficiency, and in the process of batch testing, due to the need for size adjustment, manual operation affects the accuracy of size adjustment.

Description

Four-point bending test fixture device

Technical Field

The utility model belongs to the technical field of mechanical test devices, and particularly relates to a four-point bending test fixture device.

Background

Bending performance testing is a very important material performance evaluation mode, and the four-point bending clamp is different from the three-point bending clamp only in that the upper bending clamp is provided with two bending press heads, namely four bending press heads in total, and four pressing points are formed.

The size of the sample must be manufactured and processed according to the size of the clamp, when the size of the sample is changed to cause that the sample conforming to the clamp cannot be manufactured, the clamp cannot be used, a new clamp size must be adopted for testing, and due to the limitation of the structures of the upper bending clamp and the lower bending clamp, the upper bending clamp and the lower bending clamp are very difficult to replace, the flexibility is very poor, the universality is poor, and the publication (bulletin) number: CN217059658U relates to a three-four point bending test fixture with parallel limit and continuously adjustable span.

However, the above patent needs to manually adjust the clamping positions of the upper and lower bending clamps, has low operation efficiency, is inconvenient to adjust, has poor precision when bending tests are performed on different size positions, and cannot quickly and accurately limit the positions.

Disclosure of utility model

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the four-point bending test fixture device, which effectively solves the problems that the structure of the four-point bending test fixture device in the current market is simpler, manual adjustment is needed, the operation efficiency is lower, and the accuracy of the size adjustment is influenced by the manual operation due to the size adjustment in the batch test process.

The technical scheme adopted by the utility model is as follows: the utility model provides a four-point bending test fixture device which comprises a fixed base frame, wherein a vertical chute is formed in the fixed base frame, a lower equipment seat is fixedly connected to the lower portion of the fixed base frame, a lifting adjusting unit is arranged on the upper portion of the fixed base frame, and an upper clamping unit is fixedly connected to the lifting adjusting unit.

Further, the lifting adjusting unit comprises a lifting air cylinder fixedly connected to the upper portion of the fixed base frame, and a connecting plate which is slidably arranged on the vertical sliding groove is fixedly connected to the output end of the lifting air cylinder.

Further, go up the centre gripping unit including the last equipment seat of rigid coupling on the connecting plate, go up all be equipped with the scale on equipment seat and the lower equipment seat, go up all seting up the slide rail on equipment seat and the lower equipment seat, both ends rigid coupling has electric putter on last equipment seat and the lower equipment seat, electric putter has last crooked anchor clamps and crooked anchor clamps down in last equipment seat and the lower equipment seat output rigid coupling respectively.

Further, a limiting sliding groove is formed in the side wall of the lower equipment seat, a limiting sliding seat is arranged on the limiting sliding groove in a sliding mode, and a fastening screw is connected to the limiting sliding seat in a threaded mode.

Further, the lifting air cylinders are provided with two groups, and the electric push rods are provided with four groups.

The beneficial effects obtained by the utility model by adopting the structure are as follows:

1. Through setting up electric putter structure, conveniently carry out quick regulation to crooked anchor clamps, reduce manual operation's trouble to cooperation stop gear uses, and the adjustment size is adjusted in advance, realizes accurate spacing, improves test accuracy's advantage.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

fig. 2 is a front view of an embodiment of the present utility model.

The device comprises a fixing base frame 1, a fixing base frame 2, a vertical sliding groove 3, a lower equipment seat 4, a lifting cylinder 5, a connecting plate 6, an equipment seat 7, a graduated scale 8, a sliding rail 9, an electric push rod 10, an upper bending clamp 11, a lower bending clamp 12, a limiting sliding groove 13, a limiting sliding seat 14 and a fastening screw.

Detailed Description

As shown in fig. 1 and fig. 2, the four-point bending test fixture device provided by the utility model comprises a fixed base frame 1, wherein a vertical chute 2 is formed in the fixed base frame 1, a lower equipment seat 3 is fixedly connected to the lower part of the fixed base frame 1, a limit chute 12 is formed in the side wall of the lower equipment seat 3, a limit sliding seat 13 is slidably arranged on the limit chute 12, a fastening screw 14 is screwed on the limit sliding seat 13, a lifting adjusting unit is arranged on the upper part of the fixed base frame 1, and an upper clamping unit is fixedly connected to the lifting adjusting unit.

The lifting adjusting unit comprises lifting cylinders 4 fixedly connected to the upper portion of the fixed base frame 1, two groups of lifting cylinders 4 are arranged, and a connecting plate 5 which is arranged on the vertical sliding chute 2 in a sliding mode is fixedly connected to the output end of each lifting cylinder 4.

The upper clamping unit comprises an upper equipment seat 6 fixedly connected to the connecting plate 5, graduated scales 7 are arranged on the upper equipment seat 6 and the lower equipment seat 3, sliding rails 8 are arranged on the upper equipment seat 6 and the lower equipment seat 3, electric push rods 9 are fixedly connected to the upper ends of the upper equipment seat 6 and the lower equipment seat 3, four groups of electric push rods 9 are arranged, and an upper bending clamp 10 and a lower bending clamp 11 are fixedly connected to the upper output ends of the upper equipment seat 6 and the lower equipment seat 3 respectively.

When the device is specifically used, after the device is fixedly installed, a user adjusts according to materials of a four-point bending test, the upper bending clamp 10 and the lower bending clamp 11 are controlled by the electric push rod 9 to carry out sliding adjustment on the sliding rails 8 of each group, the position change is realized, and the scale is controlled by referring to the graduated scale 7 so as to improve the test precision; after the adjustment, the lifting cylinder 4 can work, the output end pushes the connecting plate 5 to slide on the vertical chute 2, the position height of the upper equipment seat 6 is adjusted, the lower bending clamp 11 and the upper bending clamp 10 are utilized to rapidly clamp a test workpiece, the trouble of manual operation adjustment is reduced, then the bending experiment test is carried out, and the expansion and contraction amount of the lifting cylinder 4 is adjusted along with the change of pressure;

In the testing process, if the size of the bending point test is required to be adjusted, the position of the limiting sliding seat 13 on the limiting sliding groove 12 is adjusted on the graduated scale 7, the fastening screw 14 is screwed to carry out quick limiting, and when the electric push rod 9 is adjusted, the precision of the upper bending clamp 10 can be quickly adjusted, the trouble of size comparison is reduced, and the use flow of the whole four-point bending test clamp device is provided.

The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims

1. A four-point bending test fixture device, comprising a fixed base frame, a vertical slide groove is opened on the fixed base frame, a lower equipment seat is fixedly connected to the lower part of the fixed base frame, and the characteristic is that a lifting and adjusting unit is provided on the upper part of the fixed base frame, and an upper clamping unit is fixedly connected to the lifting and adjusting unit.

2. A four-point bending test fixture device according to claim 1, characterized in that: the lifting and adjusting unit includes a lifting cylinder fixedly connected to the upper part of the fixed base frame, and a connecting plate slidably arranged on the vertical slide groove is fixedly connected to the output end of the lifting cylinder.

3. A four-point bending test fixture device according to claim 2, characterized in that: the upper clamping unit includes an upper equipment seat fixedly connected to the connecting plate, the upper equipment seat and the lower equipment seat are both provided with scales, the upper equipment seat and the lower equipment seat are both provided with slide rails, the upper equipment seat and the lower equipment seat are fixedly connected with electric push rods at both ends, and the electric push rods are respectively fixedly connected with an upper bending fixture and a lower bending fixture at the output ends of the upper equipment seat and the lower equipment seat.

4. A four-point bending test fixture device according to claim 3, characterized in that: a limiting slide groove is provided on the side wall of the lower equipment seat, a limiting slide seat is slidably provided on the limiting slide groove, and a fastening screw is threaded on the limiting slide seat.

5. A four-point bending test fixture device according to claim 4, characterized in that: the lifting cylinders are provided in two groups, and the electric push rods are provided in four groups.