Movable GNSS (Global Navigation Satellite System) point fixing device for slope monitoring

Abstract

The utility model discloses a movable GNSS point fixing device for slope monitoring, and belongs to the technical field of strip mine slope geological monitoring. The ball screw is rotationally connected to the shell of the GNSS mobile monitoring point, and a ball nut is screwed on the ball screw; the drilling power head is arranged between the two ball screws and is respectively connected with the ball nuts on the two ball screws; the spiral drill rod assembly is mainly composed of a mandrel pipe, a main spiral blade and a rock drill bit. And the mandrel pipe and the main spiral blade are connected below the drilling power head. The fixing device not only solves the problems existing in a traditional fixing method, but also has the advantages of being compact in structure, easy and convenient to operate, high in adaptability and the like, flexible adjustment can be conducted according to the specific conditions and monitoring requirements of the side slope, meanwhile, popularization and application of the device are beneficial to improving the automation level and the intelligence level of side slope monitoring, and the application range is wide. And a more reliable technical support is provided for the prevention of geological disasters of the strip mine slope.

Description

Technical Field

[0001] This utility model belongs to the field of open-pit mine slope geological monitoring technology, and specifically relates to a mobile GNSS point fixing device for slope monitoring. Background Technology

[0002] In the field of open-pit mine safety, slope stability monitoring is a crucial means to ensure the safety of mine production, personnel, and property, and to prevent slope geological disasters. With technological advancements, Global Navigation Satellite System (GNSS) mobile monitoring stations have become widely used in open-pit mine slope monitoring due to their high precision, all-weather operation, automation, mobility, flexibility, and low cost. GNSS mobile monitoring stations can collect key data such as slope displacement and deformation in real time, providing engineers with accurate information for slope stability assessment.

[0003] However, in practical applications, GNSS monitoring stations face numerous challenges. Especially in complex and variable slope environments, monitoring stations are often affected by natural factors such as strong winds, heavy rain, lightning, and extreme temperature changes, leading to decreased equipment performance or even damage. In addition, human activities such as blasting construction and heavy vehicle traffic can generate vibrations and impacts that may cause the monitoring station to shift or tilt, thereby affecting the accuracy and reliability of the monitoring data.

[0004] Currently, GNSS mobile monitoring stations are the most widely used monitoring method in open-pit mines. Surveys of various open-pit mines have revealed that, during actual production, GNSS mobile monitoring stations are susceptible to data interference from external factors, significantly impacting open-pit mine slope monitoring data. Traditionally, this is addressed by adding counterweights to fix the monitoring stations. However, these methods often suffer from drawbacks such as high construction difficulty, high cost, and poor flexibility, making them unsuitable for slope monitoring needs across diverse terrains and geological conditions. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a mobile GNSS point fixing device for slope monitoring.

[0006] The technical solution adopted by the utility model is: a mobile GNSS point fixing device for slope monitoring, the key technical points of which include:

[0007] The base is fixedly connected to the outer shell of the GNSS mobile monitoring point;

[0008] A ball screw is rotatably connected in the base, and a ball nut is screwed onto the ball screw. Two ball screws form a group.

[0009] The drilling power head is arranged between two ball screws and connected with ball nuts on the two ball screws through a nut and a power head connecting rod; a controller is arranged in the drilling power head to control the upward and downward movement of the auger rod assembly and provide power for the auger rod;

[0010] The auger rod assembly mainly comprises a mandrel tube, a main helical blade and a rock drill bit; the mandrel tube and the main helical blade are connected below the drilling power head, the helical blade is provided with the rock drill bit on the upper end and the head; the auger rod assembly is controlled by the controller in the drilling power head to make the main helical blade helically drill downward along a preset angle until a predetermined soil depth is reached.

[0011] The auxiliary support structure is installed at the lower end of the GNSS mobile monitoring point shell and comprises a telescopic support and an adjustable support foot connected below the telescopic support; the telescopic support is designed to be multi-stage adjustable, the length and angle are adjusted according to the slope and height of different slopes, and additional lateral and vertical support is provided for the mobile monitoring point; the adjustable support foot is installed at the bottom of the support to ensure stable contact between the support structure and the ground.

[0012] The control device comprises three parts, namely a ball screw control and power device integrated with the base and connected with the ball screw transmission, a power head controller integrated in the power head and a total controller integrated in the GNSS mobile monitoring point shell; the control device is used to control the rotation speed of the auger rod, the feeding depth and the start and stop of the locking mechanism.

[0013] In the above scheme, the telescopic support is designed to be multi-stage adjustable, and the length and angle are adjusted according to the slope and height of different slopes.

[0014] In the above scheme, the surface of the auger rod is covered with a wear-resistant coating.

[0015] In the above scheme, the telescopic support of the auxiliary support structure is made of aluminum alloy material; the adjustable foot pad is made of rubber and polyurethane elastic material.

[0016] The utility model discloses a beneficial effect is: this be used for movable GNSS point fixing device of slope monitoring, the ball screw rod that rotates and connects in the base in GNSS mobile monitoring point shell, has the ball nut on the ball screw rod and screws, the drilling power head that sets up between two ball screw rods, and it is connected with the nut on two ball screw rods through nut and power head connecting rod respectively, auger rod subassembly, mainly by mandrel tube, main helical blade and rock drill bit, and mandrel tube and main helical blade are connected below the drilling power head. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the following will be briefly introduced the drawings needed to be used in the embodiment, obviously, the drawings in the following description only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.

[0018] Fig. 1 It is the whole structure schematic diagram of the embodiment of the utility model;

[0019] Fig. 2 It is the tunneling working state schematic diagram of the embodiment of the utility model;

[0020] Fig. 3 It is the drilling device schematic diagram of the embodiment of the utility model;

[0021] The serial number in the drawing is as follows: 1 GNSS host equipment, 2 GNSS antenna connection equipment, 3 GNSS antenna receiver, 4 GNSS mobile monitoring point shell, 5 GNSS host equipment sealing protection support baffle, 6 solar power supply panel, 7 ball screw rod, 8 first ball nut, 9 nut and power head connecting rod, 10 drilling power head, 11 main helical blade, 12 mandrel tube, 13 rock drill bit, 14 adjustable support rod, 15 adjustable support foot, 16 ball screw rod control and power device, 17 overall control device. DETAILED DESCRIPTION

[0022] Make the above purpose, features and advantages of the utility model more obvious and easy to understand, the following will be combined with the drawings of the utility model Figs. 1-3 and specific embodiment to the utility model make further detailed description.

[0023] The movable GNSS point fixing device used in this embodiment for slope monitoring includes: a GNSS mobile monitoring point housing 4, with one lower end of the GNSS mobile monitoring point housing 4 communicating with the outside, and the rest sealed. A GNSS main unit 1 is installed inside the GNSS mobile monitoring point housing 4, and its outer side is provided with a protective support partition 5 for isolating the GNSS main unit 1 from the outside. Two ball screws 7 are respectively provided on the left and right sides of the GNSS main unit 1. The two ball screws 7 located on one side of the GNSS main unit 1 are connected to the top of the GNSS mobile monitoring point housing 4 part communicating with the outside. A first ball nut and a ball screw control and power device 16 are connected to the first ball screw. The ball screw control and power device 16 drives the first ball screw to rotate, allowing the first ball nut to move up and down along the first ball screw. A second ball nut and another ball screw control and power device are connected to the second ball screw. The other ball screw control and power device drives the second ball nut to move up and down along the second ball screw. The first and second ball nuts are fixedly connected to both sides of the drilling power head 10 via nuts and power head connecting rod 9. The lower end of the drilling power head 10 is connected to a spiral drill rod assembly, which includes a mandrel tube 12 and a main spiral blade 11. A rock drill bit 13 is arranged at the head of the mandrel tube 12. In this embodiment, the spiral drill rod and rock drill bit have a wear-resistant coating to increase their drilling efficiency and durability. Similarly, in this embodiment, a third and fourth ball screw are provided on the other side of the GNSS main unit 1. The third and fourth ball screws are connected to the side of the outer wall of the GNSS mobile monitoring point housing 4 where the antenna position is located. A third ball nut and a third ball screw control and power device are connected to the third ball screw. The third ball screw control and power device drives the third ball nut to move up and down along the third ball screw. A fourth ball nut and a fourth ball screw control and power device are connected to the fourth ball screw. Driven by the fourth ball screw control and power device, the fourth ball nut moves up and down along the fourth ball screw. The third and fourth ball nuts are connected to both sides of another drilling power head 10 via another nut and a power head connecting rod 9. Another auger drill rod assembly is connected below the other drilling power head 10. In this embodiment, the bottom of the GNSS mobile monitoring point housing 4 is connected to adjustable support rods 14, and adjustable support feet 15 are connected below the adjustable support rods 14, supporting the ground. The adjustable support rods 14 are made of lightweight, high-strength aluminum alloy to reduce overall weight and increase support strength (commercially available); the adjustable support feet 15 are made of rubber and polyurethane elastic materials (commercially available) to increase friction and shock absorption with the ground, providing anti-slip and cushioning functions, ensuring stable contact between the support structure and the ground, and adapting to different geological conditions.

[0024] The embodiment installs the overall control device 17 in the GNSS host device 1. The power head controller is installed in the drilling power head 10, and the overall controller is installed in the GNSS mobile monitoring point shell 4. The control device is also provided with a fault diagnosis and alarm function, which can monitor the working state of the fixed device in real time, and timely alarm when power shortage, mechanical failure or abnormal situation occurs.

[0025] The embodiment is connected with a solar power supply panel 6 and a GNSS antenna connection device 2 on the top of the GNSS mobile monitoring point shell 4, and a GNSS antenna receiver 3 is connected on the top of the GNSS antenna connection device 2, which are respectively connected with the mobile GNSS system. The solar power supply panel 6 is used to provide power supply for the whole GNSS system.

[0026] The embodiment takes a mobile GNSS point fixed device for slope monitoring as an example to show the final effect diagram of the slope monitoring. Fig. 2

[0027] Firstly, place the machine on the surface of the slope to be monitored, start the ball screw control and power device 16 to make the first ball nut 8 move downward, and the drilling power head 10, the main helical blade 11, the mandrel tube 12 and the rock drill bit 13 move downward synchronously. When the rock drill bit 13 contacts the ground, stop the downward movement of the first ball nut 8, start the drilling power head 10, and the main helical blade 11, the mandrel tube 12 and the rock drill bit 13 start to rotate. At this time, continue to start the ball screw control and power device 16 to make the ball nut 8 move downward. When drilling to the preset depth, stop the ball screw control and power device 16 and the drilling power head 10 synchronously. Adjust the length of the adjustable support rod 14, and then adjust the adjustable support foot 15 after the GNSS mobile monitoring point shell 4 is horizontal with the ground, and complete the final installation.

[0028] Secondly, start the ball screw control and power device 16 and the drilling power head 10 of the machine synchronously, control the main helical blade 11, the mandrel tube 12, the rock drill bit 13 and the first ball nut 8 to move upward, and stop the movement of the drilling power head 10 after the rock drill bit 13 is separated from the ground. Continue to control the ball nut 8 to move upward until the main helical blade 11, the mandrel tube 12 and the rock drill bit 13 are all retracted into the GNSS mobile monitoring point shell 4, control the ball screw control and power device 16 to stop power supply, and the first ball nut 8 returns to the initial position. Retract the adjustable support rod 14, and loosen the adjustable support foot 15 to complete the overall recovery process.

[0029] ​The movable GNSS point fixing device for slope monitoring of the embodiment can effectively fix the GNSS movable monitoring station, is suitable for complex slope environment, is convenient to install, and is reasonable in cost, realizes stable fixing of the movable monitoring station on the slope, effectively resists the influence of external vibration and displacement, and improves the accuracy and long-term stability of monitoring data.

[0030] The fixing device of the embodiment not only solves the problems existing in the traditional fixing method, but also has the advantages of compact structure, simple operation, and strong adaptability. The fixing device can be flexibly adjusted according to the specific situation of the slope and monitoring requirements, and provides a new solution for slope stability monitoring. Meanwhile, popularization and application of the device will help improve the automation level and intelligent level of slope monitoring, and provide more reliable technical support for open-pit mine slope geological disaster prevention.

[0031] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A mobile GNSS point fixing device for slope monitoring, characterized in that, The utility model relates to a GNSS mobile monitoring point drilling device, including: a base fixedly connected to a GNSS mobile monitoring point shell; a ball screw rotatably connected to the base, with a ball nut screwed onto the ball screw, and two ball screws as a set; a drilling power head arranged between the two ball screws, connected to the ball nuts on the two ball screws through the nuts and a power head connecting rod; and a controller arranged inside the drilling power head to control the upward and downward movement of a screw drill rod assembly and provide power for the screw drill rod assembly; a screw drill rod assembly mainly composed of a mandrel tube, a main helical blade, and a rock drill bit; the mandrel tube and the main helical blade are connected below the drilling power head, the helical blade is provided with a rock drill bit on the upper part and the head; the screw drill rod assembly is controlled by the controller inside the drilling power head to make the main helical blade vertically downward at a preset angle for screw drilling until a predetermined soil depth is reached; an auxiliary support structure arranged at the lower end of the GNSS mobile monitoring point shell, including an extendable support and an adjustable support foot connected below the extendable support; the extendable support is designed to be adjustable in multiple stages, and the length and angle are adjusted according to the slope and height of different slopes to provide additional lateral and vertical support for the mobile monitoring point; the adjustable support foot is arranged at the bottom of the support to ensure stable contact between the support structure and the ground; a control device divided into three parts, including a ball screw control and power device integrated with the base and in transmission connection with the ball screw, a power head controller integrated in the power head, and a general controller integrated in the GNSS mobile monitoring point shell; the control device is used to control the rotation speed of the screw drill rod, the feeding depth, and the start and stop of the locking mechanism.

2. The portable GNSS point fixation device for slope monitoring of claim 1, wherein, The extendable support is designed to be adjustable in multiple stages, and the length and angle are adjusted according to the slope and height of different slopes. 3.The movable GNSS point fixing device for slope monitoring according to claim 1 or 2, characterized in that, The surface of the screw drill rod is covered with a wear-resistant coating.

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