CN210533602U

CN210533602U - Debris flow impact force measuring device

Info

Publication number: CN210533602U
Application number: CN201921734915.XU
Authority: CN
Inventors: 罗刚; 张传智; 杨远翔
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-05-15
Anticipated expiration: 2029-10-16

Abstract

The utility model discloses a mud-rock flow impact measuring device, concrete structure is: the top end of the main strut is welded with a transverse sleeve, a cross rod capable of freely rotating is installed in the transverse sleeve, the other end of the cross rod is installed at the top end of the auxiliary strut, three fan blades which are 120 degrees apart in pairs are installed in the middle of the cross rod along the radial direction, the tail ends of the fan blades are provided with wireless stress-strain piezoelectric sensors, the left end of the transverse sleeve is welded with a data transceiver box, and the data transceiver box comprises a torque sensor and a data transceiver; when the device is used, debris flow impacts fan blades, the stress-strain piezoelectric sensor acquires stress-strain data, the dynamic torque sensor acquires torque data, and then the data are sent to the data transceiver; and the data transceiver transmits the torque and stress strain data to a remote computer system so as to calculate the instantaneous and average impact force of the debris flow. The utility model provides high measurement accuracy is applicable to the measurement of the debris flow impact force of various scales simultaneously.

Description

Debris flow impact force measuring device

Technical Field

The utility model belongs to debris flow impact measures the field, concretely relates to debris flow impact measuring device.

Background

The mountain land area of China is about two thirds, the geological condition is complex, the tectonic movement is violent, and is one of the most widely distributed countries of debris flow in the world. The debris flow disasters are wide in distribution region, high in occurrence frequency and strong in destructiveness, and seriously threaten the sustainable development of national economy and society. The method is one of key technologies for implementing debris flow prevention and control engineering.

At present, the debris flow impact force measuring method mainly comprises a theoretical formula method, a material mechanics method, a simple sensor method and the like, the methods have many limited conditions, long measuring time and low measuring precision, and a novel measuring device is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: a device which has high measurement precision and can adapt to debris flow of various scales is designed.

Therefore, the invention provides a debris flow impact force measuring device. The structure is as follows: the top end of the main strut is welded with a transverse sleeve, a bearing and a cross rod capable of freely rotating are installed in the transverse sleeve, and the other end of the cross rod is installed at the top end of the auxiliary strut; meanwhile, three fan blades which are spaced by 120 degrees in pairs are arranged in the middle of the cross rod along the radial direction.

The left end of the transverse sleeve is welded with a data transceiver box, and the data transceiver box comprises a torque sensor arranged at the left end of the cross rod, a data transceiver of the torque sensor and a battery. The torque sensor is used for measuring the torque of the cross rod.

The measuring device also comprises a remote computer system which is used for receiving the data sent by the data transceiver and calculating the average impact force of the debris flow according to the torque.

Furthermore, the main strut and the auxiliary strut are telescopic struts and can be adjusted according to the height of the mud level of the debris flow calculated through surveying in advance.

Further, the fan blade comprises a framework and an external wrapping layer, the fan blade framework is made of high-strength alloy materials, and the external wrapping layer is made of flexible materials resistant to weathering and corrosion. And a wireless stress-strain piezoelectric sensor is arranged at the tail end of the fan blade framework and used for measuring the impact force at the moment of debris flow collision.

Compared with the prior art, the utility model beneficial technological effect does:

1. the height of the mud level can be adjusted according to the design of the debris flow, and the best measuring effect is achieved;

2. the outer layer of the fan blade is covered with a layer of flexible material with weather resistance and corrosion resistance, so that weather and corrosion caused by long-term use can be avoided;

3. the method is suitable for measuring the impact force of the debris flow on various scales;

4. the instantaneous and average impact force of the debris flow can be measured simultaneously, and a reliable basis is provided for debris flow prevention and control;

5. and various debris flow measuring devices are integrated, so that the measuring precision is improved.

6. The whole structure is simple, the disassembly is realized, and the carrying is convenient; the operation is simple, and the requirement on operators is not high.

Drawings

Fig. 1 is a schematic view of the lateral structure of the present invention;

fig. 2 is a schematic axial structural view of the present invention;

fig. 3 is the installation and use schematic diagram of the utility model during the measurement work.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The explanation of each reference number in the figure: 1-main strut, 2-auxiliary strut, 3-battery, 4-data transceiver box, 5-data transceiver, 6-torque sensor, 7-wireless stress strain piezoelectric sensor, 8-transverse sleeve, 9-cross bar, 10-fan blade, 11-fan blade framework, 12-fan blade external wrapping layer and 13-remote computer system.

The utility model provides a pair of mud-rock flow impact measuring device is shown as figure 1, 2. The structure is as follows: the top end of the main strut 1 is welded with a transverse sleeve 8, a bearing and a cross rod 9 capable of freely rotating are installed in the transverse sleeve 8, and the other end of the cross rod 9 is installed at the top end of the auxiliary strut 2; meanwhile, three fan blades 10 which are spaced by 120 degrees in pairs are arranged in the middle of the cross rod 9 along the radial direction.

The left end of the transverse sleeve 8 is welded with a data transceiver box 4, and the data transceiver box 4 comprises a torque sensor 6 arranged at the left end of the cross rod 9, a data transceiver 5 of the sensor and a battery 3. The torque sensor 6 is used to measure the torque of the crossbar.

As shown in fig. 3, the measuring device further comprises a remote computer system 13 for receiving the data transmitted by the data transceiver 5 and calculating the average impact force of the debris flow according to the torque.

Furthermore, the main support 1 and the auxiliary support 2 are telescopic supports and can be adjusted according to the height of the mud level of the debris flow calculated by surveying in advance.

Further, the fan blade 10 includes a framework 11 and an external wrapping layer 12, the framework 11 is made of a high-strength alloy material, and the external wrapping layer 12 is made of a flexible material with weather resistance and corrosion resistance. And a wireless stress-strain piezoelectric sensor 7 is arranged at the tail end of the fan blade framework 11 and is used for measuring the impact force at the moment of debris flow collision.

The specific implementation process comprises the following steps:

install telescopic main pillar 1, vice pillar 2 on the firm basement rock of side slope of the potential emergence district valley of mud-rock flow, adjust telescopic pillar, transfer flabellum 10 to the suitable position apart from the ditch bottom, when mud-rock flow takes place, mud-rock flow can strike flabellum 10 and make flabellum 10 drive horizontal pole 9 rotate to trigger torque sensor 6, transmit data for remote computer system 13 by data transceiver 5 again, thereby calculate the average impact of mud-rock flow.

In addition, at the moment when the debris flow tap impacts the blade, the wireless stress-strain piezoelectric sensor 7 arranged at the tail end of the fan blade 10 is triggered, stress-strain data are transmitted to the data transceiver 5, the impact force at the moment when debris flow impacts can be measured, and the impact force is transmitted to the remote computer system 13 after being processed.

To sum up, can see, the utility model discloses based on torque sensor and wireless strain piezoelectric sensor's theory of operation, can carry out accurate measurement to the impact of mud-rock flow.

Claims

1. The debris flow impact force measuring device is characterized in that a transverse sleeve (8) is welded at the top end of a main support (1), a bearing and a cross rod (9) capable of freely rotating are installed in the transverse sleeve (8), and the other end of the cross rod (9) is installed at the top end of an auxiliary support (2); three fan blades which are spaced by 120 degrees in pairs are arranged in the middle of the cross rod (9) along the radial direction;

the left end of the transverse sleeve (8) is welded with a data receiving and transmitting box (4), and the data receiving and transmitting box (4) comprises a torque sensor (6) arranged at the left end of the transverse rod (9), a data transceiver (5) of the torque sensor and a battery (3).

2. A debris flow impact force measuring device according to claim 1, further comprising a remote computer system (13) for receiving data transmitted by the data transceiver (5).

3. A debris flow impact force measuring device according to claim 1, wherein said main pillars (1) and secondary pillars (2) are telescopic pillars.

4. The debris flow impact force measuring device according to claim 1, wherein the fan blade (10) comprises a framework (11) and an outer wrapping layer (12), the fan blade framework (11) is made of a high-strength alloy material, and the outer wrapping layer (12) is made of a weather-resistant and corrosion-resistant flexible material; and a wireless stress-strain piezoelectric sensor (7) is arranged at the tail end of the fan blade framework (11).