CN217638460U - A self-balancing geotechnical direct shear tester - Google Patents

Abstract

The utility model discloses an automatic balance geotechnical direct shear tester, which is used in the technical field of geotechnical testing, comprising: a shearing device, a vertical loading device, an automatic balancing device, a shearing table, a thrust device and a reading device; The shearing device is arranged above the shearing table, and the thrust device drives the shearing device to reciprocate on the shearing table; an automatic balancing device is arranged below the shearing table, and the automatic balance The device is movably connected to the shearing device through the vertical loading device; the shearing device drives the vertical loading device to offset; at the same time, the automatic balancing device maintains balance; the reading device is connected to the shearing device The device abuts; the reading device displays the reading. The utility model can realize automatic control of water supply, so that the balance bar is always level, and the accuracy of measurement data can be effectively improved.

Description

A self-balancing geotechnical direct shear tester

technical field

The utility model relates to the technical field of geotechnical testing, in particular to an automatic balance geotechnical direct shear tester.

Background technique

The direct shear tester is an instrument used to measure the shear strength of the soil in the direct shear test, which measures the shear strength on the predetermined shear plane of the soil sample. In the process of soil shearing in the commonly used direct shearing instrument, the lower lever will be inclined downward in the direction of movement of the shearing box due to the movement of the soil driven by the upper shearing box. If it is tilted, the force on the shear box connected to it will change, the error will become larger, and the results will be inaccurate. Therefore, the test personnel need to control the balance of the balance rod during the test process, which wastes human resources. The effects of the factors are also not controllable, so that reliable test data cannot be provided for direct shear tests.

Utility model content

The purpose of the utility model is to provide an automatic balance direct shear tester, the device can effectively control the lever at the lower part of the shearing instrument to keep the level, reduce the test error, and at the same time can reduce the workload of the test personnel and facilitate the test work in progress.

In order to achieve the above purpose, the utility model provides the following technical solutions:

An automatic balance geotechnical direct shear tester, comprising: a shearing device, a vertical loading device, an automatic balancing device, a shearing table, a thrust device, and a reading device;

The shearing device is arranged above the shearing table, and the thrust device drives the shearing device to reciprocate on the shearing table;

An automatic balancing device is arranged below the shearing table, and the automatic balancing device is movably connected with the shearing device through the vertical loading device;

The shearing device drives the vertical loading device to offset; at the same time, the automatic balancing device keeps the balance;

The reading device abuts the shearing device; the reading device displays a reading.

Through the above technical scheme, the technical effect of the present utility model is that the automatic control of water supply can be realized through the automatic balancing device, so that the balance bar is always level, and the accuracy of the measurement data using the geotechnical direct shear tester can be effectively improved.

Preferably, the vertical loading device includes a support frame, a force application frame, and a balance bar;

In the support frame, one end of the beam is movably connected to the shearing table, and the center of the other end of the beam is movably connected to the balance bar;

The center of the beam at one end of the force-applying frame is movably connected with the shearing device, and the center of the beam at the other end is fixedly connected with the balance bar;

Both ends of the balance rod are provided with hooks.

Through the above technical solutions, the technical effect of the present utility model is that: in practical application, the support frame and the balance bar form a lever; heavy objects are placed at both ends of the balance bar, and the force applying rod connected to the balance bar, due to the weight of the heavy object, is not suitable for shearing. The action of the force applied by the cutting device.

Preferably, the automatic balancing device includes: a water supply tank, a valve, a water control valve, a vertical short rod, a drainage pipe, and a water tank;

The water supply tank is fixedly connected with the shearing table; a water tank installation frame is arranged on the balance rod; the water tank is movably connected with the water tank installation frame;

The valve, the water control valve and the drainage pipe are sequentially connected between the drainage pipe and the water supply tank.

Through the above technical solutions, the technical effect of the present utility model is that the water supply tank supplies water to the water tank through the valve, the water control valve and the drainage pipe, so that the balance bar is always kept horizontal.

Preferably, a vertical short rod is arranged on the balance rod to cooperate with the water control valve.

Through the above technical solutions, the technical effect of the present utility model is: in practical application, due to the movement of the shearing device, the balance rod is tilted and unbalanced, and the top of the vertical short rod is in contact with the water control valve, so that the water control valve is opened for water supply.

Preferably, the reading device and the thrust device are respectively arranged at both ends of the shearing table;

Both the reading device and the thrust device are in contact with the shearing device, and the reading device, the thrust device, and the shearing device are located on the same axis.

Through the above technical scheme, the technical effect of the present utility model is: reading the shear strength test data on the predetermined shear plane of the tested soil sample.

Preferably, the thrust device and the water tank are located on the same axis.

Preferably, the thrust device is composed of a thrust rod and a support seat;

the thrust rod penetrates through the support seat;

The thrust rod is provided with an external thread, and the support seat is provided with an internal thread; the external thread is matched with the internal thread.

Through the above technical solutions, the technical effect of the present utility model is that the thrust device is used to push the shearing device to move on the shearing table and cooperate with the reading device to read the test result data.

Compared with the prior art, the beneficial effects of the present utility model are as follows:

The utility model can automatically control the water supply through the valve and the water control valve, so that the balance rod is always level, and the accuracy of the measurement data can be effectively improved; and the tester has a simple structure, is convenient to disassemble and assemble, is suitable for outdoor test scenarios, and is convenient to use. , which greatly saves manpower, material resources and time.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description It is only an embodiment of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative efforts.

Fig. 1 is the front view of the utility model;

2 is a schematic structural diagram of a vertical loading device of the present invention;

FIG. 3 is a schematic structural diagram of the water tank and the balance rod of the present invention.

In the figure: thrust rod 1, support base 2, reading device 3, lower shear box 4, upper shear box 5, pressure plate 6, pin 7, shear table 8, force application frame 9, water supply tank 10, valve 11 , water control valve 12 , drainage pipe 13 , water tank 14 , hook 15 , support frame 16 , balance rod 17 , vertical short rod 18 , and water tank installation frame 19 .

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying 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 implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1

As shown in FIG. 1 , this embodiment discloses an automatic balance geotechnical direct shear tester, including a shearing device, a vertical loading device, an automatic balancing device, a shearing table 8 , a thrust device, and a reading device 3 ;

specifically:

A shearing device is arranged above the shearing table 8, and the thrust device drives the shearing device to reciprocate on the shearing table 8;

An automatic balancing device is arranged below the shearing table 8, and the automatic balancing device is movably connected with the shearing device through the vertical loading device;

The shearing device drives the vertical loading device to offset; at the same time, the automatic balancing device keeps the balance;

The reading device 3 is in abutment with the shearing device; the reading device 3 displays the reading.

As shown in Figure 1:

The reading device 3 and the thrust device are respectively arranged at both ends of the shearing table 8;

Both the reading device 3 and the thrust device are in contact with the shearing device, and the reading device 3, the thrust device and the shearing device are located on the same axis. The thrust device is located on the same axis as the water tank.

The thrust device consists of a thrust rod 1 and a support base 2; the thrust rod 1 penetrates the support base 2; the thrust rod 1 is provided with an external thread, and the support base 2 is provided with an internal thread; the external thread is connected with the internal thread Cooperate.

The shearing device is composed of a lower shearing box 4, an upper shearing box 5, a pressure plate 6, and a pin 7; the upper shearing box and the lower shearing box are connected by pins 7 to form a box body with a groove, and the groove A pressure plate 6 for the soil sample to be tested is placed inside to cover the soil sample to be tested and is movably connected with the vertical loading device.

as shown in picture 2:

The vertical loading device includes a support frame 16, a force application frame 9, and a balance bar 17; the support frame 16, one end of the beam is movably connected to the shear table 8, and the center of the other end of the beam is movably connected to the balance bar 17; The force-applying frame 9 is movably connected with the shearing device at the center of the beam at one end, and the center of the beam at the other end is fixedly connected with the balance bar 17 ; the balance bar 17 is provided with hooks 15 at both ends.

The automatic balancing device includes: a water supply tank 10, a valve 11, a water control valve 12, a vertical short rod 18, a drainage pipe 13, and a water tank 14; as shown in FIG. 3, the water supply tank 10 is fixedly connected to the shearing table 8; The rod 17 is provided with a water tank installation frame 19; the water tank 14 is movably connected with the water tank installation frame 19; the drainage pipe 13 and the water supply tank 10 are connected with a valve 11, a water control valve 12, and a drainage pipe 13 in sequence;

A vertical short rod 18 is arranged on the balance rod 17 to cooperate with the water control valve 12;

The water control valve 12 is a balloon valve.

Example 2

On the basis of Embodiment 1, the balance rod 17 in this embodiment is a hollow structure with closed ends;

The automatic balancing device includes: a water supply tank 10, a valve 11, a water control valve 12, a vertical short rod 18, and a water tank 14; the water supply tank 10 is fixedly connected with the shearing table 8; the balance rod 17 is provided with a water tank installation frame 19; It is movably connected with the water tank installation frame 19; the drainage pipe 13 and the water supply tank 10 are connected with the valve 11, the water control valve 12 and the drainage pipe 13 in sequence;

The vertical short rod 18 has a hollow structure and is fixedly connected with the balance rod 17;

The water outlet at the lower end of the water control valve 12 is matched with the vertical short rod 18 .

For the device disclosed in the embodiment, since it corresponds to the content disclosed in the embodiment, the description is relatively simple, and the relevant part can be referred to the partial description.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. An automatic balanced geotechnical direct shear tester, comprising: the device comprises a shearing device, a vertical loading device, an automatic balancing device, a shearing table (8), a thrust device and a reading device (3);

the shearing device is arranged above the shearing table (8), and the thrust device drives the shearing device to reciprocate on the shearing table (8);

an automatic balancing device is arranged below the shearing table (8) and is movably connected with the shearing device through the vertical loading device;

the shearing device drives the vertical loading device to deflect; meanwhile, the automatic balancing device keeps balance;

the reading device (3) is abutted with the shearing device; the reading device (3) displays the reading.

2. The auto-balanced geotechnical direct shear tester according to claim 1, wherein said vertical loading device includes a support frame (16), a force application frame (9), a balance bar (17);

the cross beam at one end of the supporting frame (16) is movably connected with the shearing table (8), and the center of the cross beam at the other end of the supporting frame is movably connected with the balancing rod (17);

the center of a cross beam at one end of the force application frame (9) is movably connected with the shearing device, and the center of a cross beam at the other end of the force application frame is fixedly connected with the balance rod (17);

and hooks (15) are arranged at two ends of the balance rod (17).

3. The auto-balancing geotechnical direct shear tester according to claim 1, wherein said auto-balancing means includes: a water supply tank (10), a valve (11), a water control valve (12), a vertical short rod (18), a drainage tube (13) and a water tank (14);

the water supply tank (10) is fixedly connected with the shearing table (8); a water tank mounting frame (19) is arranged on the balancing rod (17); the water tank (14) is movably connected with the water tank mounting frame (19);

the valve (11), the water control valve (12) and the drainage tube (13) are sequentially connected between the drainage tube (13) and the water supply tank (10).

4. An auto-balanced geotechnical direct shear tester as claimed in claim 2, characterized in that a vertical short bar (18) is provided on said balancing bar (17) to engage with the water control valve (12).

5. The automatic balancing geotechnical direct shear tester according to claim 1, wherein said reading device (3) and said thrust device are respectively disposed at two ends of said shear table (8);

the reading device (3) and the thrust device are abutted against the shearing device, and the reading device (3), the thrust device and the shearing device are positioned on the same axis.

6. The auto-balancing geotechnical direct shear tester according to claim 1, wherein said thrust unit is located on the same axis as the water tank.

7. The automatic balancing geotechnical direct shear tester according to claim 1, wherein said thrust device is composed of a thrust rod (1), a support base (2);

the thrust rod (1) penetrates through the supporting seat (2);

the thrust rod (1) is provided with an external thread, and the supporting seat (2) is provided with an internal thread; the external thread is matched with the internal thread.

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