Loading device for impact test

Abstract

The utility model discloses a loading device for an impact test, which comprises an acceleration track, a pattern fixing device, a blower device and an impact buffer device, and is characterized in that one end of the acceleration track is provided with a buckle, the pattern fixing device is connected with the acceleration track through the buckle, the surface of the acceleration track is provided with a circular groove track, and the circular groove track is connected with the blower device. A buffer device is fixedly arranged on one side of the circular groove track, a blower device is arranged on the top surface of the acceleration track, and ball driving devices are arranged at two ends of the other side of the acceleration track; corresponding parts are selected according to specific requirements through the detachable type, and the detachable type electric heating device has the advantages of being reasonable in structure, high in practicability, easy to operate and economical. The stress situations of granite under different conditions are simulated through impact of the small balls at different speeds and times, so that the mechanical evolution mechanism of the granite under the impact load is researched.

Description

Technical Field

[0001] The utility model relates to the technical field of impact experiments of granite, in particular to a loading device used for impact tests. Background Art

[0002] The dynamic characteristics of rock mass are one of the main indicators affecting the safety of rock structures, especially in the fields of tunnel engineering and underground engineering. Granite altered rock mass refers to a low-strength rock mass containing a large amount of hydrophilic soft rock minerals, which is generated under the influence of multiple stratum tectonic actions and magma intrusion under the late intrusion of granite hydrothermal fluids and surface alteration, and the rock properties are mixed and the structure is loose. Granite altered rock mass refers to a low-strength rock mass containing a large amount of hydrophilic soft rock minerals, which is generated under the influence of multiple stratum tectonic actions and magma intrusion under the late intrusion of granite hydrothermal fluids and surface alteration, and the rock properties are mixed and the structure is loose. If its characteristics are not understood and conventional treatment methods are used, it will often cause engineering accidents, threaten the safety of construction workers, affect the construction progress, and cause huge economic losses. Therefore, with the goal of revealing the evolution mechanism of granite mechanical properties under impact loads, a granite impact test device is designed, and granite dynamic tests under different impact loads and cyclic impact loads are carried out to study the evolution law of granite mechanical properties. The research results are of great significance for analyzing the dynamic stability of rock structures. The structure of the present invention is reasonable in structure, strong in practicability, simple in operation and relatively economical. Utility Model Content

[0003] In order to make up for the above deficiencies, the utility model provides a loading device for impact test aiming to improve the problems in the comparative documents.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a loading device for impact test comprises an acceleration track, a style fixing device, an air blowing device and an impact buffering device, characterized in that the acceleration track is provided with a buckle at one end of the acceleration track, the style fixing device is connected to the acceleration track through the buckle, a circular groove track is provided on the surface of the acceleration track, a buffering device is fixedly provided on one side of the circular groove track, an air blowing device is provided on the top surface of the acceleration track, and small ball driving devices are provided at both ends of the other side of the acceleration track.

[0005] As a further description of the above technical solution: the total length of the reinforcement rail is 1000mm, the height is 120mm, the width is 100mm, and the diameter of the circular groove rail is a semicircular groove of 50mm.

[0006] As a further description of the above technical solution: the ball driving device is a motor that provides acceleration for the ball.

[0007] As a further description of the above technical solution: the pattern fixing device is divided into a total length of 130mm and a width of 100mm.

[0008] As a further description of the above technical solution: a sample is closely attached to one side of the buffer device, and the buffer device is a cylindrical device with a diameter of 50 mm and a height of 50 mm.

[0009] As a further description of the above technical solution: the total length of the blowing device is 500 mm, the total width is 100 mm, the total height is 120 mm, and the interior is a hollow structure.

[0010] As a further description of the above technical solution: placement grooves are provided at both ends of the other side of the acceleration track, and the placement grooves are provided with small ball driving devices.

[0011] As a further description of the above technical solution: a card slot adapted to the buckle is provided on one side of the pattern fixing device.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model adopts a detachable type, and the corresponding parts are selected according to specific needs. The invention has the characteristics of reasonable structure, strong practicality, simple operation and relatively economical. The force situation of granite under different conditions is simulated by the impact of the ball at different speeds and times, so as to study the mechanical evolution mechanism of granite under impact load. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the air blowing mechanism of the utility model;

[0016] Figure 3 It is a schematic diagram of the acceleration track structure of the utility model;

[0017] Figure 4 It is a schematic diagram of the pattern fixing device of the utility model;

[0018] Legend:

[0019] 1. Acceleration track; 2. Pattern fixing device; 3. Blowing device; 4. Test sample; 5. Impact buffer device; 6. Buckle; 7. Circular groove track; 8. Small ball driving device; 9. Placement slot; 10. Card slot; 11. Small hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Reference Figure 1-4 The utility model provides an embodiment: a loading device for impact test comprises an acceleration track 1, a style fixing device 2, an air blowing device 3 and an impact buffering device 5, characterized in that the acceleration track 1 is provided with a buckle 6 at one end of the acceleration track 1, the style fixing device 2 is connected to the acceleration track 1 through the buckle 6, a circular groove track 7 is provided on the surface of the acceleration track 1, a buffering device 5 is fixedly provided on one side of the circular groove track 7, an air blowing device 3 is provided on the top surface of the acceleration track 1, and small ball driving devices 8 are provided at both ends of the other side of the acceleration track 1.

[0022] Reference Figure 1-4 The total length of the reinforcement track 1 is 1000mm, the height is 120mm, the width is 100mm, and the diameter of the circular groove track 7 is a semicircular groove of 50mm.

[0023] Reference Figure 1-4 The ball driving device 8 is a motor that accelerates the ball.

[0024] Reference Figure 1-4 The style fixing device 2 is divided into a total length of 130 mm and a width of 100 mm.

[0025] Reference Figure 1-4 The sample 4 is closely attached to one side of the buffer device 5, and the buffer device 5 is a cylindrical device with a diameter of 50 mm and a height of 50 mm.

[0026] A hemisphere with the same radius as the bottom surface is excavated on one side of the device. The groove of the hemisphere eliminates the influence of the non-axial stress generated by the small ball, ensuring that the granite sample is subjected to uniform and axial stress.

[0027] Reference Figure 1-4 The total length of the blowing device 3 is 500 mm, the total width is 100 mm, the total height is 120 mm, and the interior is a hollow structure.

[0028] 4*25 small holes with a diameter of 10mm are set to generate wind load downwards. This device is placed just above the tail of the pattern fixing device and the acceleration track. The wind load is generated vertically downwards through the blowing instrument so that the impact ball, pattern, and buffer device can fit tightly against the track.

[0029] Reference Figure 1-4 The other two ends of the accelerating track 1 are provided with placement grooves 9, and the placement grooves 9 are provided with ball driving devices 8.

[0030] Reference Figure 1-4 A slot 10 matching the buckle 6 is provided on one side of the fixing device 2 .

[0031] Through the action of the buckle 6 and the slot 10, the device is easy to disassemble.

[0032] Working principle: first prepare style 4, and style 4 is a granite cylindrical sample with a diameter of 50mm and a length of 100mm and install it to one side of the buffer device 5. The acceleration track 1 is fixed to the style fixing device 2 by the buckle 6, and the motor of the ball driving device 8 is powered on and installed in the placement slot 9. Then the blower device is connected to the style fixing device 2 and the tail of the acceleration device 1, and the ball is gently placed on the acceleration section of the circular groove track 7. After being accelerated by the motor, the ball hits the impact buffer device 5, and the load acts evenly on the sample; in the experiment, the impact speed of the ball or the number of impacts can be changed by changing the motor speed, and the corresponding data can be recorded at the same time.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A loading device for impact test, comprising an acceleration track (1), a pattern fixing device (2), an air blowing device (3) and an impact buffer device (5), characterized in that: The acceleration track (1) is provided with a buckle (6) at one end of the acceleration track (1), the pattern fixing device (2) is connected to the acceleration track (1) via the buckle (6), a circular groove track (7) is provided on the surface of the acceleration track (1), a buffer device (5) is fixedly provided on one side of the circular groove track (7), a blast device (3) is provided on the top surface of the acceleration track (1), and small ball driving devices (8) are provided at both ends of the other side of the acceleration track (1).

2. A loading device for impact test according to claim 1, characterized in that: The total length of the acceleration track (1) is 1000 mm, the height is 120 mm, and the width is 100 mm. The diameter of the circular groove track (7) is a semicircular groove of 50 mm.

3. A loading device for impact test according to claim 1, characterized in that: The small ball driving device (8) is a motor that accelerates the small ball.

4. A loading device for impact testing according to claim 1, characterized in that: The pattern fixing device (2) has a total length of 130 mm and a width of 100 mm.

5. A loading device for impact test according to claim 1, characterized in that: The sample (4) is closely attached to one side of the buffer device (5), and the buffer device (5) is a cylindrical device with a diameter of 50 mm and a height of 50 mm.

6. A loading device for impact test according to claim 1, characterized in that: The blowing device (3) has a total length of 500 mm, a total width of 100 mm, a total height of 120 mm, and a hollow structure inside. A plurality of small holes (11) are provided inside the blowing device (3).

7. A loading device for impact test according to claim 1, characterized in that: The other two ends of the acceleration track (1) are provided with placement grooves (9), and the placement grooves (9) are provided with small ball driving devices (8).

8. A loading device for impact testing according to claim 1, characterized in that: A snap groove (10) adapted to the snap buckle is provided on one side of the style fixing device (2).

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