Hydraulic device for safety maintenance of trackless equipment

Abstract

The hydraulic device comprises a motor, a hydraulic pump, a hydraulic oil cylinder and a reversing valve, the hydraulic pump, the hydraulic oil cylinder and the reversing valve are connected based on a hydraulic oil pipe, the motor is connected with the hydraulic pump, the hydraulic pump is connected with the reversing valve, and the reversing valve is a three-position four-way reversing valve and connected with the hydraulic oil cylinder. The hydraulic oil cylinders comprise the first hydraulic oil cylinder and the second hydraulic oil cylinder connected with the first hydraulic oil cylinder in parallel, and the hydraulic oil cylinders are fixedly connected with the trackless equipment frame. According to the hydraulic device for safety overhaul of the trackless equipment, the hydraulic oil cylinder is controlled to stretch out and retract by operating the control valve, so that rapid rising and lowering of an equipment frame are achieved, the sleeper supporting space and supporting time are effectively increased, and the hydraulic device has the advantages of being high in safety and reliability, easy to operate and the like; the device is directly used for maintenance items that workers need to operate under a trackless equipment frame in a mine well, enough safety guarantee is provided for the maintenance workers to operate under the frame, and the requirement for safety management and control of maintenance operation is met.

Description

Technical Field

[0001] This application relates to the field of mineral extraction technology, and in particular to a hydraulic device for the safe maintenance of trackless equipment. Background Technology

[0002] In underground mining operations, trackless equipment is used as the main mechanical equipment for drilling, support, shoveling, and transportation. As the primary equipment in mining operations, it needs to possess strong continuous mobility, making regular inspection and maintenance essential. For maintenance projects requiring personnel to work under the trackless equipment frame, hoists and sleepers are used in a "lifting from above and supporting from below" method to provide sufficient working space and safety for personnel performing maintenance under the frame.

[0003] When the equipment is movable, a "lifting from above and supporting from below" method using an electric hoist and sleepers is employed as a safety measure when moving it into the maintenance chamber. However, this method carries potential risks such as slow speed, skewed support, and uneven support during sleeper support. When the equipment is immovable, on-site maintenance is the only option. A hoist is installed directly above the equipment as a lifting point for the hand-operated hoist, and sleepers are used in conjunction with this "lifting from above and supporting from below" method. However, this method also carries potential risks such as unstable hoisting, slow speed, skewed support, and uneven support. Both of these operating methods present significant potential risks, making it difficult to guarantee the safety of the workers. Utility Model Content

[0004] To address or partially address the problems existing in related technologies, this application provides a hydraulic device for the safe maintenance of trackless equipment, enabling rapid lifting and lowering of the equipment. When used in conjunction with a hoist, it provides sufficient safety assurance for maintenance personnel working under the vehicle frame.

[0005] The first aspect of this application provides a hydraulic device for the safe maintenance of trackless equipment, comprising: a motor and a hydraulic pump, a hydraulic cylinder, and a directional valve connected by hydraulic oil pipes. The motor is connected to the hydraulic pump, the hydraulic pump is connected to the directional valve, the directional valve is a three-position four-way directional valve, and is connected to the hydraulic cylinder. The hydraulic cylinder includes a first hydraulic cylinder and a second hydraulic cylinder connected in parallel with the first hydraulic cylinder. The hydraulic cylinder is connected and fixed to the trackless equipment frame.

[0006] The hydraulic system also includes a check valve, which is connected between the hydraulic pump and the directional valve.

[0007] The hydraulic system also includes a relief valve, which is located at the outlet of the hydraulic pump.

[0008] The hydraulic device also includes a hydraulic lock, with hydraulic cylinder No. 1 connected to hydraulic lock No. 1 and hydraulic cylinder No. 2 connected to hydraulic lock No. 2.

[0009] The technical solution provided in this application may include the following beneficial effects:

[0010] This application provides a hydraulic device for the safe maintenance of trackless equipment. The device controls the extension and retraction of the hydraulic cylinder through a control valve, thereby enabling the rapid raising and lowering of the equipment frame. This effectively increases the space and support time for sleepers, and has the advantages of high safety and reliability and simple operation. The device can be directly used in maintenance projects in mines where personnel need to work under the trackless equipment frame, providing sufficient safety for maintenance personnel working under the frame and meeting the safety management requirements of maintenance operations.

[0011] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0012] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0013] Figure 1 This is a schematic diagram of the structure of the device shown in the embodiments of this application;

[0014] Figure label:

[0015] In the diagram, 1—Relief valve, 2—Motor, 3—Hydraulic pump, 4—Directional control valve, 5—Check valve No. 1, 6—Check valve No. 2, 7—Hydraulic lock No. 1, 8—Hydraulic lock No. 2, 9—Hydraulic cylinder No. 1, 10—Hydraulic cylinder No. 2, 11—Hydraulic hose. Detailed Implementation

[0016] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0017] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0018] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0019] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0020] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 The hydraulic device shown for the safe maintenance of trackless equipment includes: a motor 2, a hydraulic pump 3, a hydraulic cylinder, an overflow valve 1, a directional valve 4, a first check valve 5, a second check valve 6, a first hydraulic lock 7, a first hydraulic cylinder 9, a second hydraulic cylinder 10, and hydraulic pipes 11. The motor 2 has parameters of 15kW (380V, 1450r / min), the hydraulic pump 3 has parameters of YB1-25 (25ml / r, 6.3MPa, 960r / min), the directional valve 4 is a three-position four-way valve, the hydraulic lock is a two-way hydraulic lock, and the hydraulic cylinder has parameters of φ100 (thrust 157.1kN, stroke 400). All components are connected via hydraulic pipes 11 to form an electro-hydraulic linkage device.

[0022] Motor 2 is connected to hydraulic pump 3, which provides power to the hydraulic pump 3, which in turn delivers and pressurizes hydraulic oil. A relief valve 1 is installed at the outlet of hydraulic pump 3 to ensure a safe hydraulic pressure of ≤110 bar. Hydraulic pump 3 is connected to directional valve 4, a three-position four-way directional valve used to control the flow of hydraulic lines. Check valves 5 and 6 are installed on the hydraulic oil lines 11 on both sides of relief valve 1 to direct the flow of hydraulic oil.

[0023] The reversing valve 4 is connected to the hydraulic cylinder, which includes a first hydraulic cylinder 9 and a second hydraulic cylinder 10 connected in parallel with the first hydraulic cylinder 9. The first hydraulic cylinder 9 is connected to a first hydraulic lock 7, and the second hydraulic cylinder 10 is connected to a second hydraulic lock 8. The hydraulic lock is used to lock the hydraulic oil in the cylinder to prevent backflow. The hydraulic cylinder is used to raise and lower the height of the trackless equipment frame. The hydraulic cylinder is fixedly connected to the trackless equipment frame.

[0024] During operation, bolts are used to secure hydraulic cylinders 9 (number 1) and 10 (number 2) to the trackless equipment frame. Motor 2 and hydraulic pump 3 are started. The directional control valve 4 lever is operated to connect P1-A1 and T1-B1, extending the piston rods of hydraulic cylinders 9 and 10, thus raising the trackless equipment frame. When the directional control valve 4 lever is operated to connect P2-B2 and A2-T2, the piston rods of hydraulic cylinders 9 and 10 retract, lowering the trackless equipment frame. When the trackless equipment frame is raised or lowered, and the directional control valve 4 lever is returned to the neutral position, P-A and T-B are deactivated, and hydraulic cylinders 9 and 10 immediately stop operating and maintain their positions.

[0025] Finally, it should be noted that in this document, relationships such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "include," "contain," or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0026] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0027] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A hydraulic device for safe maintenance of trackless equipment, characterized in that, include: The equipment includes an electric motor, a hydraulic pump, a hydraulic cylinder, and a directional valve connected by hydraulic oil pipes. The electric motor is connected to the hydraulic pump, and the hydraulic pump is connected to the directional valve. The directional valve is a three-position four-way directional valve and is connected to the hydraulic cylinder. The hydraulic cylinder includes a first hydraulic cylinder and a second hydraulic cylinder connected in parallel with the first hydraulic cylinder. The hydraulic cylinder is fixedly connected to the trackless equipment frame.

2. The hydraulic device for safe maintenance of trackless equipment according to claim 1, characterized in that, The hydraulic device also includes a check valve connected between the hydraulic pump and the directional valve.

3. The hydraulic device for safe maintenance of trackless equipment according to claim 1, characterized in that, The hydraulic device also includes a relief valve, which is located at the outlet of the hydraulic pump.

4. The hydraulic device for safe maintenance of trackless equipment according to claim 1, characterized in that, The hydraulic device also includes a hydraulic lock, with the first hydraulic cylinder connected to the first hydraulic lock and the second hydraulic cylinder connected to the second hydraulic lock.

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