Constant load compression testing machine

By introducing a linkage component into the pressure testing machine, the protective cover is raised when the upper pressure plate moves downward, which solves the problem of injury caused by the sample breaking and improves safety and ease of operation.

CN224518376UActive Publication Date: 2026-07-17PINGDINGSHAN GUOZHENG QUALITY INSPECTION SERVICE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
PINGDINGSHAN GUOZHENG QUALITY INSPECTION SERVICE CO LTD
Filing Date
2025-06-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing pressure testing machines may cause injury to people when the sample breaks, resulting in low operational safety. Furthermore, the protective plate needs to be opened when placing the sample, which is inconvenient.

Method used

Design a constant load pressure testing machine. When the upper pressure plate moves down, the protective cover moves up. The linkage mechanism prevents the sample from breaking out when it breaks. The operation is simple and does not affect the placement of the sample.

Benefits of technology

This technology prevents injury from ejected material when the sample breaks, improves operational safety, and simplifies the sample placement process.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224518376U_ABST
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Abstract

The utility model discloses a kind of constant loading pressure testing machines, including rack, adjustable upper pressing plate is equipped in the inside of rack, the bottom wall of rack is equipped with lower pressing plate by support seat, the right side surface of rack is fixedly connected with control box, further including linkage mechanism;Linkage mechanism: it includes limiting rod, adjusting plate, protective cover and adjusting assembly, the inside left side of control box is equipped with adjusting cavity, the front and back of adjusting cavity are equipped with limiting rod, two adjusting plates are slidably connected between two limiting rods, two adjusting plates are linked by adjusting assembly, the lower surface of the adjusting plate of downside is equipped with protective cover, protective cover is right side opening U type, protective cover is located at the outside of rack, after the sample is placed on lower pressing plate, make upper pressing plate by linkage assembly while driving protective cover to rise upward under moving down, avoid sample broken and broken out hurt human body, and simple operation will not affect the placement of sample.
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Claims

1. A constant load pressure testing machine, comprising a frame (1), the inside of the frame (1) is provided with an adjustable upper pressing plate (4), the bottom wall of the frame (1) is provided with a lower pressing plate (12) through a supporting seat (15), and the right side surface of the frame (1) is fixedly connected with a control box (2), characterized in that: It also includes the linkage mechanism (3); Linkage mechanism (3): It includes a limit rod (31), an adjustment plate (32), a protective cover (33) and an adjustment component (34). The control box (2) has an adjustment cavity on the left side. Limit rods (31) are provided on both the front and rear sides of the adjustment cavity. Two adjustment plates (32) are slidably connected between the two limit rods (31). The upper and lower adjustment plates (32) are linked by the adjustment component (34). The lower surface of the lower adjustment plate (32) is provided with a protective cover (33). The protective cover (33) is a U-shaped opening on the right side. The protective cover (33) is located outside the frame (1). The lower surface of the upper adjustment plate (32) is fixedly connected to the upper surface of the upper pressure plate (4).

2. The constant load compression testing machine of claim 1, wherein: The adjustment assembly (34) includes a support rod (341), a slider (342), and a connecting rod (343). The support rod (341) is provided inside the adjustment cavity. The slider (342) is slidably connected to both the front and rear sides of the outer surface of the support rod (341). The connecting rod (343) is rotatably connected to the slots opened on the upper and lower sides of the slider (342).

3. The constant load compression testing machine of claim 2, wherein: The adjustment assembly (34) also includes a U-shaped seat (344). The front and rear sides of the side of the adjustment plate (32) near the support rod (341) are provided with U-shaped seats (344). The end of the connecting rod (343) away from the slider (342) is rotatably connected to the interior of the adjacent U-shaped seat (344).

4. The constant load compression testing machine of claim 1, wherein: The upper surface of the frame (1) has a threaded hole with a lead screw (5) connected to it. The lower end of the lead screw (5) is rotatably connected to the upper end of the upper pressure plate (4). The upper end of the lead screw (5) is provided with a turntable (6).

5. The constant load compression testing machine of claim 1, wherein: It also includes a microcontroller (7), which is located on the front side of the control box (2), and the input terminal of the microcontroller (7) is electrically connected to an external power supply.

6. A constant load compression testing machine according to claim 5 wherein: A piston (8) is slidably connected inside the hydraulic cavity opened on the lower surface of the upper pressure plate (4). A pressure plate (14) is provided at the lower end of the piston (8). An oil tank (9) is provided on the bottom wall of the control box (2). The oil port one on the front side of the oil tank (9) is connected to the liquid inlet one at the upper end of the hydraulic cavity, and the oil port two on the rear side of the oil tank (9) is connected to the liquid inlet two at the lower end of the hydraulic cavity through a conveying pipe (10).

7. A constant load compression testing machine according to claim 6 wherein: A pump (11) is connected in series in the middle of the front conveying pipe (10), and an electromagnetic reversing valve (13) is connected in series between the two conveying pipes (10). The input ends of the pump (11) and the electromagnetic reversing valve (13) are electrically connected to the output end of the microcontroller (7).