Hydraulic self-tightening magnetic combined supporting system

Abstract

The utility model provides a hydraulic self-tightening type magnetic suction combined supporting system, and belongs to the field of engineering supporting, the supporting system comprises an anchor rod, a permanent magnet tray is arranged at the bottom of the anchor rod, a hydraulic self-tightening device is arranged below the permanent magnet tray, and the hydraulic self-tightening device comprises a hydraulic column, a hydraulic cavity, a hydraulic pipe and a hydraulic pump which are connected in sequence; an intelligent early-warning hydraulic pressure gauge is arranged at the end, close to the hydraulic cavity, of the hydraulic pipe. Through the magnetic attraction effect of the permanent magnet tray, the attraction force between the anchor rods is enhanced, and the supporting stability is improved; the hydraulic column is pressurized through the hydraulic pump, so that the anchor rod is more tightly attached to the rock wall, and the supporting effect is further improved; the intelligent early warning hydraulic pressure gauge can monitor the pressure condition of the hydraulic system in real time, and safe operation of the supporting system is ensured; the permanent magnet tray, the hydraulic self-tightening device and other assemblies are convenient to install and maintain, and the supporting scheme can be rapidly adjusted according to different geological conditions.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of engineering support, in particular to a hydraulic self-tightening magnetic combined support system. BACKGROUND

[0002] During the construction of underground projects, adverse geological rock masses are often encountered, which may lead to the deformation and damage of surrounding rock under the influence of mining. At this time, the support of the rock mass is the key to ensure safe construction. The traditional support method has many limitations: 1. It is difficult to control the artificial pre-tightening force: the traditional manual pre-tightening method cannot accurately control the pre-tightening force of the anchor rod, resulting in unstable support effect and sometimes difficult to meet the design requirements. 2. Poor adaptability of rigid support structure: although the traditional rigid support member such as steel ladder beam can connect multiple anchor rods, due to its rigid characteristics, it is difficult to adapt to different geological conditions and rock mass deformation, resulting in uneven support effect. 3. Low support efficiency: the traditional support method is complex and time-consuming, which affects the progress of the project. 4. Safety problem: under complex geological conditions, the traditional support method may have safety hazards, such as anchor rod falling off and support structure damage. 5. Difficult to maintain and adjust: once the rock mass condition changes, it is relatively difficult to adjust and maintain the traditional support structure, which is not conducive to the continuous progress of the project.

[0003] Therefore, it is necessary to design an improved hydraulic self-tightening magnetic combined support system to solve the above problems. CONTENT OF THE INVENTION

[0004] In view of the technical problems in the background art, the application provides a hydraulic self-tightening magnetic combined support system, which can control the pre-tightening force through a hydraulic system and monitor the stress state of the anchor rod in real time through intelligent early warning, thereby improving the support efficiency and safety.

[0005] The application provides a hydraulic self-tightening magnetic combined support system, which comprises an anchor rod, the end of the anchor rod is provided with a permanent magnet tray, the lower side of the permanent magnet tray is provided with a hydraulic self-tightening device, the hydraulic self-tightening device comprises a hydraulic column, a hydraulic cavity, a hydraulic pipe and a hydraulic pump connected in sequence, and the end of the hydraulic pipe close to the hydraulic cavity is provided with an intelligent early warning hydraulic gauge.

[0006] As a further improvement of the application, the permanent magnet tray is a circular disc provided with a groove at the bottom.

[0007] As a further improvement of the application, one end of the hydraulic column is clamped and fixed in the groove of the permanent magnet tray.

[0008] As a further improvement of the application, the hydraulic column is at least two.

[0009] As a further improvement of the application, one end of the hydraulic pipe is in communication with the bottom side of the hydraulic cavity, and the other end is in communication with the hydraulic pump.

[0010] As a further improvement of the application, the hydraulic pump is in communication with the hydraulic pipe of the adjacent hydraulic self-tightening device.

[0011] As a further improvement of the application, the intelligent early warning hydraulic gauge is arranged in the intelligent early warning hydraulic gauge.

[0012] As a further improvement of the application, a magnetic connecting piece is arranged between the two adjacent permanent magnetic trays.

[0013] As a further improvement of the application, the magnetic connecting piece is made of flexible alloy material.

[0014] As a further improvement of the application, an anti-skid nut is arranged below the hydraulic cavity.

[0015] The beneficial effects of the application are as follows:

[0016] The application provides a hydraulic self-tightening type magnetic attraction combined support system, which comprises an anchor rod, the end of the anchor rod is provided with a permanent magnetic tray, the lower part of the permanent magnetic tray is provided with a hydraulic self-tightening device, the hydraulic self-tightening device comprises a hydraulic column, a hydraulic cavity, a hydraulic pipe and a hydraulic pump which are connected in sequence, and the end of the hydraulic pipe close to the hydraulic cavity is provided with an intelligent early warning hydraulic gauge.

[0017] The magnetic attraction of the permanent magnetic tray can enhance the adsorption force between the anchor rods and improve the stability of the support. The hydraulic pump of the hydraulic self-tightening device can pressurize the hydraulic column, so that the anchor rod is more closely attached to the rock wall, and the support effect is further improved. The intelligent early warning hydraulic gauge can monitor the pressure condition of the hydraulic system in real time, so as to ensure the safe operation of the support system. The design of the permanent magnetic tray, the hydraulic self-tightening device and other components is convenient for installation and maintenance, and the support scheme can be quickly adjusted according to different geological conditions.

[0018] The above description is only a summary of the technical scheme of the application. In order to more clearly understand the technical means of the application, the application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present application, the drawings used in the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0020] Figure 1 Fig. 1 is a structural schematic diagram of a hydraulic self-tightening magnetic combination support system in an embodiment of the present application;

[0021] Figure 2 Fig. 2 is a sectional schematic diagram of a permanent magnetic tray and a hydraulic self-tightening device in an embodiment of the present application;

[0022] Figure 3 Fig. 3 is a flow chart of hydraulic intelligent early warning monitoring and determination in an embodiment of the present application;

[0023] Fig. 1 is a structural schematic diagram of a hydraulic self-tightening magnetic combination support system in an embodiment of the present application; DETAILED DESCRIPTION

[0024] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0026] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0028] In the description of the embodiments of the present application, the orientations or positional relationships indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0029] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0030] During the construction of underground works, adverse geological rock mass is often encountered, which will cause the surrounding rock to deform and damage under the influence of mining. At this time, the support of the rock mass is the key to ensure safe construction, and the traditional support method has many limitations: on the one hand, manual pre-tightening force cannot be intuitively measured, and on the other hand, the use of rigid components such as steel ladder beams to connect multiple anchor rods cannot adapt to the local conditions, so that the anchor rods at different positions are not uniformly stressed.

[0031] In order to solve the technical problems of existing support technology that manual pre-tightening force is difficult to control, rigid support structure has poor adaptability, support efficiency is low, safety is poor, and maintenance and adjustment are difficult, the present application provides a hydraulic self-tightening magnetic combination support system, wherein the method of flexibly controlling and real-time adjusting the pre-tightening force of different anchor rods is adopted to adapt to complex geological conditions and improve the safety and stability of the support structure.

[0032] Please refer to Figure 1The structural schematic diagram of the hydraulic self-tightening magnetic attraction combined support system provided by the embodiments of the present application comprises an anchor rod 1, the end of the anchor rod 1 is provided with a permanent magnetic tray 2, the lower part of the permanent magnetic tray 2 is provided with a hydraulic self-tightening device, the hydraulic self-tightening device comprises a hydraulic column 3, a hydraulic cavity 4, a hydraulic pipe 5 and a hydraulic pump 6 connected in sequence, and the end of the hydraulic pipe 5 close to the hydraulic cavity 4 is provided with an intelligent early warning hydraulic gauge 7. In this way, by exerting pressure on the hydraulic column 3 through the hydraulic pump 6, the pre-tightening force of the anchor rod 1 can be accurately controlled, the problem that the traditional manual pre-tightening force is difficult to control is solved, and the stability of the supporting effect is ensured. The hydraulic self-tightening device can automatically adjust the supporting force according to the deformation of the rock mass, so that the supporting system has good adaptability, especially in complex geological conditions, it can better adapt to the deformation of the rock mass. The hydraulic system can quickly exert and adjust the supporting force, compared with the traditional manual supporting method, the construction efficiency is significantly improved, and the construction period is shortened.

[0033] In some embodiments of the present application, the permanent magnetic tray 2 is a circular disc provided with a groove at the bottom, and one end of the hydraulic column 3 is clamped and fixed in the groove of the permanent magnetic tray 2. In this way, the connection between the hydraulic column 3 and the permanent magnetic tray 2 can be ensured to be more firm, thereby enhancing the anchoring effect between the anchor rod 1 and the rock wall.

[0034] Please refer to Figure 2 In some embodiments of the present application, the hydraulic column 3 is at least two. Using multiple hydraulic columns 3 can disperse the pressure of the rock mass on the supporting system, reduce the load of a single hydraulic column 3, and improve the stability and durability of the entire supporting system. Multiple hydraulic columns 3 can act simultaneously, improve the supporting efficiency, and quickly realize the fixation and support of the rock mass. Arranging the hydraulic columns 3 according to the specific shape of the rock mass and the supporting demand increases the flexibility of the supporting system, so that it can adapt to different geological conditions and construction environments.

[0035] In some embodiments of the present application, one end of the hydraulic pipe 5 is in communication with the bottom side of the hydraulic cavity 4, and the other end is in communication with the hydraulic pump 6. The end of the hydraulic pipe 5 close to the hydraulic cavity 4 is provided with an intelligent early warning hydraulic gauge 7, and the intelligent early warning hydraulic gauge 7 is provided with a warning module. In this way, the system is ensured to be safe within the set working pressure range, and when the monitored pressure exceeds the preset safe range, the warning module can issue an alarm to remind the operator to take corresponding measures.

[0036] In some embodiments of the present application, the hydraulic pump 6 communicates with the hydraulic pipe 5 of the adjacent hydraulic self-tightening device, which can simplify the design of the system, reduce additional connecting components, and reduce the complexity and manufacturing cost of the system. A magnetic connector 8 is arranged between the two adjacent permanent magnetic trays 2, and the magnetic connector 8 is made of a flexible alloy material, which can provide good elasticity and toughness, so that the connector can absorb energy when subjected to rock deformation or external impact, reducing damage to the support system. The flexible alloy material can also adapt to the slight displacement of the rock mass, maintaining the stability of the connection. By using an external connection controller to control the permanent magnetic tray 2 to generate a specific magnetic field, after the permanent magnetic tray 2 releases the magnetic force, the magnetic connector 8 is attracted and firmly attached to the permanent magnetic tray 2, forming a whole. Through this magnetic connection, the two adjacent anchor rods 1 form a support integrated body, enhancing the stability and load-bearing capacity of the overall support structure.

[0037] In some embodiments of the present application, a non-slip nut 9 is arranged below the hydraulic cavity 4 to fix the hydraulic cavity 4 and prevent it from moving due to vibration, impact or other external forces during operation, preventing the anchor rod 1 from slipping when subjected to external forces and ensuring the support effect.

[0038] The working principle of the hydraulic self-tightening magnetic attraction combined support system provided by the present application will be described below.

[0039] During the installation of the anchor rod 1, first drill the anchor rod hole, and then install the anchor rod 1 into the anchor rod hole. Then, install the permanent magnetic tray 2 with magnetism at the end of the anchor rod 1, and use the external connection controller to control the permanent magnetic tray 2 to generate a specific magnetic field. The hydraulic self-tightening device is installed below the permanent magnetic tray 2, which is composed of a hydraulic column 3, a hydraulic cavity 4 with a circular hole in the center, an intelligent early warning hydraulic gauge 7, a hydraulic pipe 5 and a hydraulic pump 6. The non-slip nut 9 is arranged below the hydraulic cavity 4. The intelligent early warning hydraulic gauge 7 is provided with a warning module to realize the warning function when the pressure changes. The anchor rod 1 passes through the permanent magnetic tray 2, the hydraulic cavity 4 and the non-slip nut 9 in sequence, and the support devices of the adjacent anchor rods 1 are the same. The magnetic connectors 8 are used to connect the anchor rods 1, and the connectors are made of a flexible alloy material with magnetism. After the permanent magnetic tray 2 releases the magnetic force, the connector forms a whole with the permanent magnetic tray 2, and the adjacent anchor rods 1 form a support integrated body.

[0040] The existing method generally manually twists the wrench to apply pre-tightening force to the anchor rod 1, which is time-consuming and laborious. The hydraulic self-tightening device connected to the end of the anchor rod 1 is used to apply pre-tightening force to the anchor rod 1 in the present application. The hydraulic column 3 of the hydraulic self-tightening device is clamped in the groove of the permanent magnetic tray 2 to prevent shaking. When the hydraulic self-tightening device applies pre-tightening force, the intelligent early warning hydraulic gauge 7 monitors the pressure change in real time. If the pressure exceeds the set value, the early warning module in the intelligent early warning hydraulic gauge 7 will give an early warning, and the hydraulic pump 6 will stop working to prevent the anchor rod 1 from being damaged. Figure 3As shown, when reaching the predetermined value (a value, determined according to the actual construction condition), the pressurization is stopped, at which time the anchor rod 1 is installed. The remaining anchor rods 1 are installed in this way. After all the anchor rods 1 are installed, a combined support whole is formed. When the overlying strata are subjected to stress redistribution after mining influence, the anchor rod 1 is subjected to external pressure and will form a certain deformation or anchoring damage, which is reflected in the retraction of the hydraulic column 3, and the pressure rise of the intelligent early warning hydraulic gauge 7. When the pressure of the intelligent early warning hydraulic gauge 7 is small within a certain range and the pressure change remains relatively insignificant, the intelligent early warning hydraulic gauge 7 remains in a real-time monitoring state. However, when the pressure of the intelligent early warning hydraulic gauge 7 is large but changes within a controllable range, it indicates that the anchor rod 1 is subjected to a large pressure. At this time, the hydraulic pump 6 actively depressurizes to a certain value, giving the anchor rod 1 and the surrounding rock a certain adjustable space, thereby releasing the pressure. When the pressure value of the intelligent early warning hydraulic gauge 7 changes significantly beyond a certain value (b value, determined according to the actual construction condition), the pressure falls, and the intelligent early warning hydraulic gauge 7 alarms, indicating that the anchoring end of the anchor rod 1 has failed or the anchor rod 1 has been broken, and the anchor rod 1 or anchor cable needs to be promptly supplemented, thereby forming a combined support body again. In this way, the anchor rods 1 interact with each other, achieving the effect of combined support. Through real-time monitoring, the support is updated in a timely manner, significantly improving the flexibility and adaptability of the support system and the safety of the construction process.

[0041] As shown in the exemplary hydraulic intelligent early warning monitoring and determination process of the present application, Figure 3 In other embodiments of the present application, other determination methods can also be used for analysis as needed, and the present application is not limited thereto.

[0042] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and embodiments having the same technical idea and playing the same role and effect within the scope of the technical solutions of the present application are all included in the technical scope of the present application. In addition, within the scope of the main idea of the present application, various modifications that can be thought of by those skilled in the art, and other ways constructed by combining part of the components of the embodiments are also included in the scope of the present application.

Claims

1. A hydraulic self-anchoring magnetic combination support system comprising a rock bolt, characterized in that, The end of the anchor rod is provided with a permanent magnetic tray, and the lower side of the permanent magnetic tray is provided with a hydraulic self-tightening device.

2. The hydraulic self-anchoring magnetic combination support system according to claim 1, wherein, The permanent magnetic tray is a circular disc provided with a groove at the bottom.

3. The hydraulic self-anchoring magnetic assembly support system of claim 2, wherein, One end of the hydraulic column is clamped and fixed in the groove of the permanent magnetic tray.

4. The hydraulic self-anchoring magnetic combination support system according to claim 3, characterized in that, The hydraulic column is at least two.

5. The hydraulic self-anchoring magnetic assembly support system of claim 1, wherein, One end of the hydraulic pipe is in communication with the bottom side of the hydraulic cavity, and the other end is in communication with the hydraulic pump.

6. The hydraulic self-anchoring magnetic assembly support system of claim 5, wherein, The hydraulic pump is in communication with the hydraulic pipe of the adjacent hydraulic self-tightening device.

7. The hydraulic self-anchoring magnetic assembly support system of claim 1, wherein, The intelligent early warning hydraulic table is provided with an early warning module.

8. The hydraulic self-anchoring magnetic assembly support system of claim 1, wherein, Adjacent two permanent magnetic trays are provided with a magnetic connecting piece.

9. The hydraulic self-anchoring magnetic assembly support system of claim 8, wherein, The material of the magnetic connecting piece is a flexible alloy material.

10. The hydraulic self-anchoring magnetic assembly support system of claim 1, wherein, The lower side of the hydraulic cavity is provided with an anti-skid nut.

Images