WO2020011110A1 - Beidou navigation satellite system-based slope deformation amplification mechanism - Google Patents

Abstract

A BeiDou Navigation Satellite System-based slope deformation amplification mechanism comprises an amplification mechanism part (1), a wire connection part (2), a monitoring shaft body part (3), and a displacement detection part (4). The monitoring shaft body part (3) comprises a column (3.1) and a support base (3.2), and a bottom end of the column (3.1) is fixed to the support base (3.2). The amplification mechanism part (1) comprises a fixed base (1.1) and a rotating antenna bracket (1.2). The fixed base (1.1) further comprises a base (1.1.3), a compressed spring (1.1.5), a position limiting plate (1.1.6), and a stretched spring (1.1.7). The rotary antenna bracket (1.2) further comprises a strut (1.2.3), an eyebolt (1.2.4), a position limiting antenna (1.2.5), a sliding nut (1.2.6), a position limiting screw (1.2.7), and a wire clasp (1.2.8). The displacement detection part (4) comprises a detection body (4.1) and an adjustment ring (4.2). The wire connection part (2) comprises a wire head portion (2.1) and a wire tail portion (2.2). The wire head portion (2.1) comprises a wire head (2.1.1), a wire (2.1.2), a hollow stud (2.1.3), a wire support base (2.1.6), and a wire sleeve (2.1.7). The wire tail portion (2.2) comprises a rigid tube (2.2.1), an opening cover (2.2.2), and a solid stud (2.2.3). The present invention has a displacement amplification function, and can amplify a slow deformation of a slope in millimeters into one in centimeters, greatly enhancing the monitoring precision of slope deformation.

Description

Slope deformation amplification mechanism based on Beidou satellite navigation system Technical field

The invention relates to the technical field of geological monitoring, and in particular to a slope deformation amplification mechanism based on the Beidou satellite navigation system.

Background technique

The problem of determining slope stability has always been a problem that plagues engineering and technical personnel. In recent years, with the continuous development of electronic information technology and the improvement of major public facilities in the country, slope deformation monitoring technology based on the Beidou satellite navigation system has begun to emerge. Thanks to the high accuracy of the Beidou system, centimeter-level deformation monitoring is possible.

However, the deformation of the slope is a process of slowly accumulating and changing from quantity to quality, so how to quickly and accurately identify the deformation trend in the slowly changing stage is a very meaningful thing. Using the Beidou satellite navigation system to adopt the carrier phase difference Technologies such as millimeter-level accuracy can be obtained from long-term observation requirements. However, within a short period of time, the positioning error of the millimeter level will cover the slow deformation of the millimeter level of the slope, so it cannot be used for a short time. The data can quickly determine the slope deformation trend.

In summary, a slope deformation amplification mechanism based on the Beidou satellite navigation system is urgently needed to solve the problems in the prior art.

Summary of the invention

The purpose of the present invention is to provide a slope deformation amplification mechanism based on the Beidou satellite navigation system to solve the problem of unrecognizable millimeter-level deformation.

In order to achieve the above object, the present invention provides a slope deformation amplification mechanism based on the Beidou satellite navigation system, which includes a monitoring pile main body portion, an amplification mechanism portion located at the top of the monitoring pile main portion, a cable connection portion at the bottom of the monitoring pile main portion, Displacement detection section at the other end of the cable connection section.

The main body of the monitoring pile includes a post and a support base, and the bottom end of the post is fixed on the support base.

The amplifying mechanism part includes a fixed base and a rotating antenna support; the fixed base further includes a base, a compression spring, a limit plate, and a tension spring; the rotating antenna support also includes a support rod, a ring bolt, a positioning antenna, a sliding nut, and a positioning bolt Draw wire retaining ring; the base is installed at the top of the column, and the support rod is connected to the base through a pin; the limit plate is connected to the base through a compression spring and fixed with a pin; one end of the tension spring is connected with the support rod through a ring bolt, The other end is connected to the base through a pin; the positioning antenna is fixed at the top of the support rod; the side of the support rod is provided with a sliding groove matching the sliding nut, and the cable retaining ring is fixed by the positioning bolt and the sliding nut.

The cable connecting part includes a cable head and a cable tail; the cable head includes a cable head, a cable, a hollow stud, a cable support and a cable sleeve; the cable head is inserted into the cable retaining ring of the rotating antenna bracket part, and the hollow stud It is fixed on the cable support by clamping nut; the tail of the cable includes a rigid tube, an opening cover, and a solid stud; the rigid tube is fixedly connected to the side of the bottom of the column; the opening cover is connected to the rigid tube by a thread, and the cable sleeve passes through the opening cover The small groove is stuck and fixed.

The displacement detecting part includes a detecting body and an adjusting ring; the detecting body includes a concrete block, a screw and a clamping nut; one end of the screw is fixedly connected with the concrete block, and the other end is connected with the adjusting ring through the clamping nut; the other end of the adjusting ring is through the card The tightening nut is connected to the solid stud of the cable connecting portion.

Preferably, ratchet teeth are provided on a portion of the support rod that is in contact with the limiting plate, and the size of the tooth groove is matched with the sectional size of the limiting plate.

Preferably, the rigid pipe comprises a plurality of sections of pipes, which are fixedly connected through a corner joint to form a rigid whole.

Preferably, the detection body includes a concrete block, a screw and a clamping nut; one end of the screw is fixedly connected to the concrete block, and the other end is connected to the adjusting ring through the clamping nut.

Preferably, round holes are provided at both ends of the adjusting ring, and the tension of the cable is controlled by adjusting the corresponding clamping nut.

Preferably, the main body of the monitoring pile further includes a photovoltaic power generation system and a distribution box, which are respectively connected to the posts through connecting plates and fastened with bolts. A satellite receiver for receiving positioning antenna signals is placed in the distribution box.

Applying the technical solution of the present invention has the following beneficial effects:

(1) A slope deformation amplifying mechanism based on the Beidou satellite navigation system of the present invention has a displacement amplification function, which can amplify the slow deformation of the slope millimeter level to the displacement change of the centimeter level or even more, so that the slope deformation The trend can be quickly and accurately monitored without being limited by the positioning accuracy and the amount of observation data of the Beidou satellite navigation system. At the same time, the real displacement value can be derived from the enlarged data through the geometric relationship, and the slope deformation can be monitored. There is a big breakthrough in accuracy.

(2) In the present invention, the support rod of the magnifying mechanism part is in a force-balanced state under the joint action of the pull wire and the tension spring to ensure the position of the positioning antenna is stable. When the displacement detection part moves to drive the support rod to rotate a certain angle, The limit plate continues to be supported on the support rod as it rotates under the action of the compression spring. The support rod is provided with ratchet teeth. The support rod will not move even when the displacement detection part moves back and forth, swings or other special conditions. The wobble phenomenon will not interfere with the determination of the positioning data and ensure the accuracy of the data.

(3) In the present invention, separating the displacement detecting portion from the main body portion of the monitoring pile and conducting displacement conduction through a wire drawing device is beneficial to reducing the volume and mass of the displacement detecting portion and enabling it to be more safely arranged to the landslide. At the soft soil, the movement of the soil can be more accurately captured and fed back. At the same time, the main part of the monitoring pile can be arranged in a safe area with wide field of vision, stable geology, and good signal, ensuring the stability of signal transmission quality, and photovoltaic power generation. Efficient operation of the system. In addition, even if a soil landslide occurs, it will not affect the monitoring equipment and Beidou positioning system, which can ensure the normal operation of the system.

In addition to the objects, features, and advantages described above, the present invention has other objects, features, and advantages. Hereinafter, the present invention will be described in further detail with reference to the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and the descriptions thereof are used to explain the present invention, and do not constitute an improper limitation on the present invention. In the drawings:

FIG. 1 is a structural diagram of the present invention;

FIG. 2 is a schematic diagram of an enlarged mechanism part;

3 is a sectional view of an enlarged mechanism part;

4 is a cross-sectional view of the enlarged mechanism after detecting displacement;

5 is a sectional view of a displacement detecting portion;

Fig. 6 is a simplified diagram of the enlargement ratio calculation.

Among them, 1. Amplification mechanism part, 2. Pull wire connection part, 3. Monitoring pile main body part, 4. Displacement detection part, 1.1, Fixed base, 1.2, Rotating antenna bracket, 2.1, Pull head, 2.2, Pull tail, 4.1 Detector, 4.2, Adjustment ring, 1.1.1, Bolt, 1.1.2, Pin two, 1.1.3, Base, 1.1.4, Pin three, 1.1.5, Compression spring, 1.1.6, Limit Bit plate, 1.1.7, tension spring, 1.1.8, split pin two, 1.1.9, split pin three, 1.2.1, split pin one, 1.2.2, pin one, 1.2.3, support rod, 1.2.4, eye bolts, 1.2.5, positioning antenna, 1.2.6, slide nut, 1.2.7, positioning bolt, 1.2.8, cable retaining ring, 2.1.1, cable head, 2.1.2, cable, 2.1 .3, hollow studs, 2.1.4, clamping nut one, 2.1.5, clamping nut two, 2.1.6, cable support, 2.1.7, cable sleeve, 2.2.1, rigid tube, 2.2.2 Opening cover, 2.2.3, solid stud, 2.2.4, clamping nut three, 2.2.5, clamping nut four, 3.1, upright, 3.2, support base, 4.1.1, concrete block, 4.1.2, Screw, 4.1.3, clamping nut six, 4.1.4, clamping nut five.

detailed description

The following describes the embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention can be implemented in a variety of different ways defined and covered by the claims.

Example 1:

1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, and FIG. 6, a slope deformation amplifying mechanism based on the Beidou satellite navigation system. This embodiment is applied to the monitoring of road slope deformation.

A slope deformation amplifying mechanism based on a Beidou satellite navigation system includes an amplifying mechanism portion 1, a cable connecting portion 2, a monitoring pile main portion 3, and a displacement detecting portion 4; the monitoring pile main portion 3 includes a post 3.1 and a support base 3.2, and a bottom of the post The end is fixed on the support base; the enlargement mechanism part 1 includes a fixed base 1.1 and a rotating antenna bracket 1.2; the fixed base 1.1 also includes a base 1.1.3, a compression spring 1.1.5, a limit plate 1.1.6, and a tension spring 1.1. 7; Rotating antenna bracket 1.2 also includes support rod 1.2.3, eye bolt 1.2.4, positioning antenna 1.2.5, sliding nut 1.2.6, positioning bolt 1.2.7, cable retaining ring 1.2.8; base 1.1.3 installation At the top of the column 3.1, it is fixed by bolts 1.1.1; the support rod 1.2.3 is rotatably connected to the base 1.1.3 through the pin 1.2.2; the limit plate 1.1.6 is connected to the base 1.1 by the compression spring 1.1.5. 3 Connected and fixed with pin two 1.1.2; one end of the tension spring 1.1.7 is connected to the support rod 1.2.3 through the ring bolt 1.2.4, and the other end is connected to the base 1.1.3 through the pin three 1.1.4; positioning The antenna 1.2.5 is fixed at the top of the pole 1.2.3; the side of the pole 1.2.3 is matched with the sliding nut 1.2.6 Chute, pull the collar by fixing bolts 1.2.8 1.2.7 1.2.6 with the slip nut.

The displacement detection section 4 includes a probe body 4.1 and an adjustment ring 4.2; the cable connection section 2 includes a cable head 2.1 and a cable tail 2.2; the cable head 2.1 includes a cable head 2.1.1, a cable 2.1.2, a hollow stud 2.1.3, Cable support 2.1.6 and cable sleeve 2.1.7; cable head 2.1.1 snaps onto the cable clamp ring 1.2.8 of the rotating antenna bracket part, and the hollow stud 2.1.3 is clamped by the clamping nut 2.1.4 and clamped The second nut 2.1.5 is fixed on the cable support 2.1.6, and the antenna support is rotated with the pull of the cable; the tail of the cable 2.2 includes a rigid tube 2.2.1, an opening cover 2.2.2, and a solid stud 2.2.3; rigid The tube 2.2.1 is fixedly connected to the side of the bottom of the column; the opening cover 2.2.2 is screwed to the rigid tube 2.2.1, and the cable sleeve 2.1.7 is fixed and fixed by the narrow groove on the opening cover 2.2.2, the solid stud 2.2.3 Connect to the adjusting ring 4.2 of the displacement detection part through clamping nut 3. 2.2.4 and clamping nut 4. 2.2.5.

Pin 1.2.2, pin 2.1.1, pin 3.1.1 and one end of the pin 1.1.4 are correspondingly provided with split pin 1.1.2, split pin two 1.1.8 and split pin three 1.1.9 to prevent The pin comes off when the mechanism is in use.

The part of the support rod 1.2.3 that is in contact with the limit plate 1.1.6 is provided with ratchet teeth. The antenna bracket 1.2 can only rotate in one direction under the combined action of the tension spring 1.1.7 and the compression spring 1.1.5. At the same time, it can remain in a certain position.

The cable retaining ring 1.2.8 can be moved up and down on the support rod 1.2.3, and fastened by a positioning bolt, and different positions correspond to different displacement magnifications.

The rigid pipe 2.2.1 includes multiple sections of pipes, which are fixedly connected through a corner joint to form a rigid whole, and the length is determined according to actual needs.

The detection body 4.1 includes a concrete block 4.1.1, a screw 4.1.2; a concrete block 4.1.1 and a screw 4.1.2 are fixedly connected, and the screw 4.1.2 is through a clamping nut 5 4.1.4 and a clamping nut 6. 4.1.3 Connect with the adjustment ring 4.2.

The adjusting ring 4.2 has round holes at both ends, and the tension of the pulling wire 2.1.2 can be controlled by adjusting the corresponding clamping nut.

The main body of the monitoring pile further includes a photovoltaic power generation system and a distribution box, which are connected to the posts through connection plates and fastened with bolts, and a satellite receiver for receiving positioning antenna signals is placed in the distribution box.

Working principle of the above-mentioned slope deformation amplifying mechanism based on Beidou satellite navigation system:

When the mechanism is arranged, firstly select the monitoring points prone to landslides, bury the displacement detection part at the monitoring points, and then choose the nearby foundation with a relatively solid foundation, a wide field of vision, and a good signal to erect the monitoring pile main part. After the whole device is installed, adjust the tension of the cable through the adjusting ring to make the positioning antenna at a proper starting position.

When the soil at the monitoring point slips, the displacement detection part will be driven to slide slowly together, so that the cable is pulled, and the cable sleeve will not move under the constraints of the rigid pipe, the main body of the monitoring pile and the cable support, thus the cable displacement It will be faithfully transmitted to the cable snap ring, which will drive the support rod to rotate about the pin axis. It is easy to know from the geometric relationship that the rotation displacement of the positioning antenna is related to the tension displacement of the cable. This proportional relationship is related to the cable snap ring The position on the rod is related, and different magnification relationships can be obtained by adjusting the position to suit different project needs. At the same time, the true displacement of the slope can also be derived from this proportional relationship.

As shown in Figure 6, the enlargement mechanism is simplified. Point A is the cable support, point B is the fixing point of the tension spring and the base, point C is the position of the cable clamp on the pole, and point D is the positioning antenna. The point is the fixed point of the support pin; ED ₁ indicates the position of the support rod before displacement, and ED ₂ indicates the position of the support rod after displacement.

make,

∠D ₁ ED ₂ = α, ∠AEC ₁ = 90 °, 1 _AE = c.

Rotational displacement of the positioning antenna:

In right-angled triangle AEC ₁ , it can be obtained from the Pythagorean theorem,

In triangle AEC ₂ , it can be obtained from the cosine theorem,

Therefore, the change of the length of the pull line can be obtained, that is, the true displacement of the slope deformation:

Then, the scale of the institution can be expressed as:

Taking b as the independent variable (0 <b <a) and other parameters as constants, the derivative of function i can be obtained:

Within the scope of the domain, i ′ <0 is constant, and the i function decreases monotonically. That is to say, the closer the pull wire snap ring is on the support rod to the base, the larger the enlargement ratio of the mechanism; conversely, the further away from the base, the smaller the enlargement ratio of the mechanism.

Under normal circumstances, the strut is in a force-balanced state under the combined action of the tension wire and the tension spring to ensure the position of the positioning antenna is stable. When the displacement detection part moves to drive the strut to rotate a certain angle, the limit plate is compressed by the spring. Under the action, it continues to be supported on the support rod. The support rod is provided with ratchet teeth. Even under the back and forth movement, swing or other special conditions of the displacement detection part, the support rod will not swing and will not be positioned. The judgment of the data is disturbed to ensure the accuracy of the data.

After a period of time, the slope's displacement accumulation may reach the maximum detection value of the displacement amplification mechanism. At this time, by adjusting the adjustment ring, loosening the cable, and removing the limit plate, the positioning antenna can be returned to a suitable starting position. Continue normal monitoring.

A slope deformation amplifying mechanism based on the Beidou satellite navigation system, the soil displacement is amplified by the mechanism and transmitted to the positioning antenna of the Beidou satellite receiver, so that the millimeter-level slow deformation of the slope can be amplified to the centimeter level or even more. The large-scale displacement change enables the slope deformation trend to be quickly and accurately monitored without being limited by the positioning accuracy and the amount of observation data.

The above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (5)

1. A slope deformation amplifying mechanism based on a Beidou satellite navigation system includes a monitoring pile main body part, an amplification mechanism part located on the top of the monitoring pile main body part, a pull wire connection part located at the bottom of the monitor pile main part, and displacement detection at the other end of the pull wire connection part. section;

   It is characterized by:

   The main body of the monitoring pile includes a post and a support base, and the bottom end of the post is fixed on the support base;

   The amplifying mechanism part includes a fixed base and a rotating antenna support; the fixed base further includes a base, a compression spring, a limit plate, and a tension spring; the rotating antenna support also includes a support rod, a ring bolt, a positioning antenna, a sliding nut, and a positioning bolt Draw wire retaining ring; the base is installed at the top of the column, and the support rod is connected to the base through a pin; the limit plate is connected to the base through a compression spring and fixed with a pin; The other end is connected to the base through a pin; the positioning antenna is fixed on the top of the support rod; the side of the support rod is provided with a sliding groove matching the sliding nut, and the cable retaining ring is fixed to the sliding nut by a positioning bolt;

   The cable connecting part includes a cable head and a cable tail; the cable head includes a cable head, a cable, a hollow stud, a cable support and a cable sleeve; the cable head is inserted into the cable retaining ring of the rotating antenna bracket part, and the hollow stud It is fixed on the cable support by clamping nut; the tail of the cable includes a rigid tube, an opening cover, and a solid stud; the rigid tube is fixedly connected to the side of the bottom of the column; the opening cover is connected to the rigid tube by a thread, and the cable sleeve passes through the opening cover The small slots are stuck and fixed;

   The displacement detecting part includes a detecting body and an adjusting ring; the detecting body includes a concrete block, a screw and a clamping nut; one end of the screw is fixedly connected with the concrete block, and the other end is connected with the adjusting ring through the clamping nut; the other end of the adjusting ring is through the card The tightening nut is connected to the solid stud of the cable connecting portion.
2. The slope deformation amplifying mechanism based on the Beidou satellite navigation system according to claim 1, characterized in that a portion of the support rod in contact with the limit plate is provided with ratchet teeth, and the size of the tooth groove and the cross section of the limit plate Size matches.
3. The slope deformation amplifying mechanism based on the Beidou satellite navigation system according to claim 1, wherein the rigid pipe comprises a plurality of pipes, which are fixedly connected through a corner joint to form a rigid whole.
4. The slope deformation amplifying mechanism based on the Beidou satellite navigation system according to claim 1, wherein the adjusting ring is provided with circular holes at both ends, and the tension of the cable is controlled by adjusting the corresponding clamping nut.
5. The slope deformation amplifying mechanism based on the Beidou satellite navigation system according to claim 1, characterized in that the main body of the monitoring pile further comprises a photovoltaic power generation system and a distribution box, which are connected to the pillars through a connection plate, and are used together. Bolts are fastened, and a satellite receiver that receives positioning antenna signals is placed in the distribution box.

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