Hydraulic system of mining emulsion crawler lifting vehicle

Abstract

The utility model discloses a hydraulic system of a mining emulsion crawler lifting vehicle, and relates to the technical field of transportation of underground coal mine large-scale equipment. The hydraulic system comprises a hydraulic oil tank, a running oil pump, a working oil pump, a speed increasing box, a crawler hydraulic motor, a high-low pressure switching valve, a generator motor, a lifting oil cylinder, a supporting leg oil cylinder, a quick socket liquid inlet, a quick socket liquid outlet and the like, a liquid inlet of the quick socket is connected to a high-pressure oil outlet pipe of the driving oil pump, and a liquid outlet of the quick socket is connected to an oil return pipe of the hydraulic oil tank. Compared with an existing structure, the hydraulic system can be externally connected with emulsion to serve as power, is connected to an emulsion system in a locomotive through a quick connector and is controlled through an electro-hydraulic control valve, then the locomotive is controlled to complete actions such as advancing, retreating and platform lifting, and lifting, auxiliary transportation and high-altitude operation of underground heavy equipment can be completed through the structure. And the work of transporting materials and equipment and the like can be completed.

Description

Technical Field

[0001] The utility model relates to the technical field of large equipment transportation in coal mines, and particularly relates to a hydraulic system of a mine emulsion crawler lifting vehicle. Background Art

[0002] In mine production, due to reasons such as narrow working space, complex road surface, difficult hoisting, and poor lighting, it is difficult to transport materials in the mine. Especially in the process of transporting construction support materials and maintaining coal mining equipment, due to heavy components, large volume, and different construction heights, how to transport and construct underground has long troubled technicians in this field. The current transportation methods mainly rely on manual pulling and hoisting with a crane onto a transport vehicle for transportation. This construction method has disadvantages such as a large number of personnel requirements, high work intensity, low efficiency, poor hoisting stability, and easy occurrence of safety accidents. Therefore, there is an urgent need to design a hydraulic system for a crawler lifting vehicle to solve this technical problem.

[0003] Coal mine emulsion is a special chemical agent, which plays an important role in the process of coal mine exploitation. The emulsion is mainly composed of water and one or more surfactants, and can emulsify two immiscible liquids or gases with each other to form a stable emulsion. In coal mines, emulsions are commonly used in blasting operations, coal mine fire prevention and extinguishing work, coal mine drainage treatment, etc. How to make full use of mine emulsion by using local materials in the design of the hydraulic system has become a technical problem. Content of the Utility Model

[0004] In view of the above technical problems, the utility model provides a hydraulic system of a mine emulsion crawler lifting vehicle. The hydraulic system can use external emulsion as power, connect to the in-vehicle emulsion system through a quick connector, and then be controlled by an electro-hydraulic control valve to control the locomotive to complete actions such as forward movement, backward movement, and platform lifting. This structure can not only complete the lifting, auxiliary transportation, and aerial work of underground heavy equipment, but also complete the work of transporting materials and equipment, etc.

[0005] The utility model solves the above problems through the following technical means:

[0006] A hydraulic system for a mining emulsion crawler lifting vehicle, characterized in that it includes a hydraulic oil tank, a traveling oil pump, a working oil pump, a speed increaser box, a two-way multi-way valve, a crawler hydraulic motor, a high-low pressure switching valve, a five-way multi-way valve, a four-way multi-way valve, a generator motor, a lifting cylinder, a outrigger cylinder, a quick socket inlet, a quick socket outlet and a pressure reducing valve, wherein: the traveling oil pump is connected to the working oil pump through the speed increaser box, and the speed ratio of the speed increaser box is 1:4 to 1:6; the traveling oil pump pressurizes the working oil in the hydraulic oil tank and then transports it to the two-way multi-way valve, and the two-way multi-way valve is connected to the crawler hydraulic motor, and the two-way multi-way valve is used to control the forward and reverse rotation of two groups of crawler hydraulic motors; the working oil pump pressurizes the working oil in the hydraulic oil tank and then transports it to the high-low pressure switching valve, the five-way multi-way valve and the four-way multi-way valve in sequence, and the five-way multi-way valve is respectively connected to a group of generator motors and two groups of lifting cylinders, and the five-way multi-way valve is used to control whether the motor is working and to control the telescopic length of the lifting cylinder; the four-way multi-way valve is respectively connected to four groups of outrigger cylinders, and the four-way multi-way valve is used to control the telescopic length of the outrigger cylinders; the quick socket inlet is connected to the high-pressure outlet pipe of the traveling oil pump, and the quick socket outlet is connected to the return pipe of the hydraulic oil tank; the return oil circuit of the crawler hydraulic motor returns to the hydraulic oil tank through the pressure reducing valve.

[0007] Preferably, the outrigger cylinders are arranged at the four corners of the vehicle frame, and the outrigger cylinders are used for support and leveling.

[0008] Preferably, the motor is used to drive power generation, and the generated electric energy is stored in the battery box in the middle of the vehicle frame, and an electric control box is installed on the top of the battery box.

[0009] Preferably, a lifting arm is further installed on the vehicle frame. The lifting arm includes two groups of main arms and auxiliary arms. The main arms and the auxiliary arms are arranged crosswise to form a scissor structure. The middle parts of the main arms and the auxiliary arms are connected by a central shaft. Among them: the top of the main arm is connected with a lifting platform through a fixed rotating shaft, and two lifting shafts are installed at the positions between the fixed rotating shaft and the central shaft of the two main arms. Two groups of lifting cylinders are installed between the lifting shafts and the vehicle frame. The bottom of the main arm is installed on the rolling groove of the vehicle frame through a roller; the top of the auxiliary arm is installed on the rolling groove of the lifting platform through a roller, and the bottom of the auxiliary arm is connected to the vehicle frame through a fixed rotating shaft.

[0010] Preferably, the two crawler hydraulic motors are installed at the front end of the vehicle frame. A crawler drive wheel is connected to the outside of the crawler hydraulic motor. Two crawler idler wheels are installed at the rear end of the vehicle frame. A crawler is sleeved on the crawler idler wheels and the crawler drive wheels.

[0011] The hydraulic system of a mining emulsion crawler lifting vehicle of the present invention has the following beneficial effects:

[0012] 1) The hydraulic system makes use of the locally available mine emulsion. It takes the externally connected emulsion as power, connects it to the in-vehicle emulsion system through quick connectors, and then controls it through an electro-hydraulic control valve to control the locomotive to complete actions such as forward movement, backward movement, and platform lifting. This structure can not only complete the lifting, auxiliary transportation, and aerial work of underground heavy equipment, but also complete tasks such as transporting materials and equipment.

[0013] 2) The crawler hydraulic motor in the hydraulic system is equipped with crawlers, which can adapt to the complex road conditions in the mine. The lifting cylinder in the hydraulic system can drive the scissor structure to move reliably, drive the stable lifting of the lifting platform, and precisely control the lifting speed and height by controlling the lifting cylinder. In addition, the bottom end of the main arm is rollingly connected to the vehicle frame through a roller and rolling groove structure, and the top end of the auxiliary arm is rollingly connected to the lifting platform through a roller and rolling groove structure. This connection scheme can effectively ensure the stable lifting of the lifting platform and keep the lifting platform in a horizontal working state all the time.

[0014] 3) A generator motor is also provided in the hydraulic system. The generator motor drives the motor to generate electricity and stores the electric energy in the battery, which is convenient for other electrical equipment in the system to use electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 is a schematic structural diagram of the hydraulic system of the present invention;

[0017] Figure 2 is a schematic diagram of the installation position of the hydraulic system of the present invention;

[0018] Figure 3 is a schematic diagram of the installation position of the hydraulic cylinder in the hydraulic system of the present invention;

[0019] Figure 4 is a schematic structural diagram of the lifting cylinder corresponding to the lifting arm in the present invention.

[0020] Among them, 1 - hydraulic oil tank, 2 - traveling oil pump, 3 - working oil pump, 4 - speed increaser box, 5 - two-way multi-way valve, 6 - crawler hydraulic motor, 7 - high-low pressure switching valve, 8 - five-way multi-way valve, 9 - four-way multi-way valve, 10 - generator motor, 11 - lifting cylinder, 12 - outrigger cylinder, 13 - quick connector inlet, 14 - quick connector outlet, 15 - pressure reducing valve, 16 - vehicle frame, 17 - battery box, 18 - electric control box, 19 - lifting arm, 1901 - main arm, 1902 - sub-arm, 1903 - central shaft, 20 - lifting platform, 21 - crawler drive wheel. Detailed implementation manners

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0022] The present utility model will be described in detail below with reference to the drawings.

[0023] As Figures 1 to 4As shown in the figure, the hydraulic system of this mine-used emulsion crawler lifting vehicle includes a hydraulic oil tank 1, a traveling oil pump 2, a working oil pump 3, a speed increaser 4, a two-way multi-way valve 5, a crawler hydraulic motor 6, a high-low pressure switching valve 7, a five-way multi-way valve 8, a four-way multi-way valve 9, a generator motor 10, a lifting cylinder 11, a outrigger cylinder 12, a quick connector inlet 13, a quick connector outlet 14 and a pressure reducing valve 15. In the figure, the traveling oil pump 2 is connected to the working oil pump 3 through the speed increaser 4. The speed ratio of the speed increaser 4 is 1:4 to 1:6. Specifically, in this embodiment, 1:4 is adopted. When the rotational speed of the traveling oil pump 2 is 500 r / min, the rotational speed of the working oil pump 3 is 2000 r / min. The traveling oil pump 2 pressurizes the working oil in the hydraulic oil tank 1 and then transports it to the two-way multi-way valve 5. The two-way multi-way valve 5 is connected to the crawler hydraulic motor 6. The two-way multi-way valve 5 is used to control the forward and reverse rotation of two groups of crawler hydraulic motors 6. The working oil pump 3 pressurizes the working oil in the hydraulic oil tank 1 and then transports it to the high-low pressure switching valve 7, the five-way multi-way valve 8 and the four-way multi-way valve 9 in sequence. The high-low pressure switching valve 7 is used to adjust the working oil to avoid excessive pressure. The five-way multi-way valve 8 is respectively connected to a group of generator motors 10 and two groups of lifting cylinders 11. The five-way multi-way valve 8 is used to control whether the motor of the generator motor 10 works and to control the telescopic length of the lifting cylinder 11. The four-way multi-way valve 9 is respectively connected to four groups of outrigger cylinders 12. The four-way multi-way valve 9 is used to control the telescopic length of the outrigger cylinders 12.

[0024] It should be noted that the quick connector inlet 13 is connected to the high-pressure outlet pipe of the traveling oil pump 2, and the quick connector outlet 14 is connected to the return pipe of the hydraulic oil tank 1. This hydraulic system makes full use of the mine-used emulsion on the spot, uses the external emulsion as power, connects it to the in-vehicle emulsion system through a quick connector, and then controls it through an electro-hydraulic control valve, thereby controlling the locomotive to complete actions such as forward, backward and platform lifting. This structure can not only complete the lifting, auxiliary transportation and aerial work of heavy underground equipment, but also complete the work of transporting materials and equipment.

[0025] It should be further noted that common existing models are selected for the multi-way valve body, cylinders and oil pumps.

[0026] During actual operation, the emulsion is pressurized to form a working medium with a certain working pressure. When lifting is required, the control valve is operated to make the emulsion enter the lifting cylinder. The pressure of the hydraulic oil acts on the piston of the hydraulic cylinder, pushing the piston upward. The piston is connected to the lifting arm or platform. As the piston rises, the lifting arm gradually extends, realizing the lifting of heavy objects. During the lifting process, the flow rate and pressure of the emulsion can be controlled by adjusting the control valve, so as to achieve precise control of the lifting speed and height. When lowering is required, the control valve is operated to make the emulsion flow back from the lifting hydraulic cylinder to the oil tank. At this time, under the action of the gravity of the heavy object, the piston moves downward and the lifting arm gradually retracts, realizing a smooth descent.

[0027] In the figure, outrigger cylinders 12 are arranged at the four corners of the vehicle frame 16. The outrigger cylinders 12 are used for support and leveling. The motor 10 is used to drive power generation, and the generated electric energy is stored in the battery box 17 in the middle of the vehicle frame 16. An electric control box 18 is installed on the top of the battery box 17. It should be noted that a generator motor is also provided in this hydraulic system. The generator motor drives the motor to generate electricity and stores the electric energy in the battery, facilitating the use of electricity by other electrical equipment in the system.

[0028] In the figure, a lifting arm 19 is also installed on the vehicle frame 16. The lifting arm 19 includes two groups of main arms 1901 and auxiliary arms 1902. The main arms 1901 and the auxiliary arms 1902 are arranged crosswise to form a scissor structure. The middle parts of the main arms 1901 and the auxiliary arms 1902 are connected by a central shaft 1903. Among them: the top of the main arm 1901 is connected with a lifting platform 20 through a fixed rotating shaft. Lifting shafts are installed at the positions of the two main arms 1901 between the fixed rotating shaft and the central shaft 1903. Two groups of lifting cylinders 11 are installed between the lifting shafts and the vehicle frame 16. The bottom of the main arm 1901 is installed on the rolling groove of the vehicle frame 16 through rollers; the top of the auxiliary arm 1902 is installed on the rolling groove of the lifting platform 20 through rollers, and the bottom of the auxiliary arm 1902 is connected to the vehicle frame 16 through a fixed rotating shaft.

[0029] During actual operation, when the lifting cylinders extend, they first drive the lifting shafts to move upward, and then drive the main arms and the auxiliary arms to rise synchronously. Since the lengths of the main arms and the auxiliary arms are the same, the positions where their tops rise can also remain the same. When the lifting cylinders contract, they will similarly drive the main arms and the auxiliary arms to descend synchronously. In this lifting arm, the bottom ends of the main arms are connected to the vehicle frame through a sliding wheel and a chute structure, and the top ends of the auxiliary arms are connected to the lifting platform through a sliding wheel and a chute structure. This connection scheme can effectively ensure the stable lifting of the lifting platform and keep the lifting platform in a horizontal working state all the time.

[0030] In the figure, two crawler hydraulic motors 6 are installed at the front end of the vehicle frame 16. A crawler drive wheel 21 is externally connected to the crawler hydraulic motor 6. Two crawler idler wheels are installed at the rear end of the vehicle frame 16. A crawler is sleeved on the crawler idler wheels and the crawler drive wheel 21. In addition, the oil return circuit of the crawler hydraulic motor 6 flows back to the hydraulic oil tank 1 through a pressure reducing valve 15. During actual operation, the crawler hydraulic motors in this hydraulic system are equipped with crawlers, which can adapt to the complex road conditions in the mine.

[0031] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A hydraulic system for a crawler lifting vehicle for mine emulsion, characterized in that, It includes a hydraulic oil tank (1), a traveling oil pump (2), a working oil pump (3), a speed increasing box (4), a two-way multi-way valve (5), a crawler hydraulic motor (6), a high-low pressure switching valve (7), a five-way multi-way valve (8), a four-way multi-way valve (9), a generator motor (10), a lifting cylinder (11), a outrigger cylinder (12), a quick connector inlet (13), a quick connector outlet (14) and a pressure reducing valve (15), wherein: The traveling oil pump (2) is connected to the working oil pump (3) through the speed increasing box (4), and the speed ratio of the speed increasing box (4) is 1:4 to 1:6; The traveling oil pump (2) pressurizes the working oil in the hydraulic oil tank (1) and then transports it to the two-way multi-way valve (5). The two-way multi-way valve (5) is connected to the crawler hydraulic motor (6), and the two-way multi-way valve (5) is used to control the forward and reverse rotation of two groups of crawler hydraulic motors (6); The working oil pump (3) pressurizes the working oil in the hydraulic oil tank (1) and then transports it to the high-low pressure switching valve (7), the five-way multi-way valve (8) and the four-way multi-way valve (9) in sequence. The five-way multi-way valve (8) is respectively connected to a group of generator motors (10) and two groups of lifting cylinders (11). The five-way multi-way valve (8) is used to control whether the motor (10) works and to control the telescopic length of the lifting cylinder (11); The four-way multi-way valve (9) is respectively connected to four groups of outrigger cylinders (12), and the four-way multi-way valve (9) is used to control the telescopic length of the outrigger cylinders (12); The quick connector inlet (13) is connected to the high-pressure outlet oil pipe of the traveling oil pump (2), and the quick connector outlet (14) is connected to the return oil pipe of the hydraulic oil tank (1); The return oil circuit of the crawler hydraulic motor (6) returns to the hydraulic oil tank (1) through the pressure reducing valve (15).

2. The hydraulic system of the mine emulsion crawler lifting vehicle according to claim 1, characterized in that, The outrigger cylinders (12) are arranged at the four corners of the vehicle frame (16), and the outrigger cylinders (12) are used for support and leveling.

3. The hydraulic system of the mine emulsion crawler lifting vehicle according to claim 2, characterized in that, The motor (10) is used to drive power generation, and the generated electric energy is stored in the battery box (17) in the middle of the vehicle frame (16). An electric control box (18) is installed on the top of the battery box (17).

4. The hydraulic system of the crawler lifting vehicle for mine emulsion according to claim 3, wherein A lifting arm (19) is also installed on the vehicle frame (16). The lifting arm (19) includes two groups of main arms (1901) and a sub-arm (1902). The main arms (1901) and the sub-arm (1902) are arranged crosswise to form a scissor structure. The middle parts of the main arms (1901) and the sub-arm (1902) are connected by a central shaft (1903), wherein: The top of the main arm (1901) is connected with a lifting platform (20) through a fixed rotating shaft. Lifting shafts are installed at the positions of the two main arms (1901) between the fixed rotating shaft and the central shaft (1903). Two groups of lifting cylinders (11) are installed between the lifting shafts and the vehicle frame (16). The bottom of the main arm (1901) is installed in the rolling groove of the vehicle frame (16) through rollers; The top of the sub-arm (1902) is installed in the rolling groove of the lifting platform (20) through rollers, and the bottom of the sub-arm (1902) is connected to the vehicle frame (16) through a fixed rotating shaft.

5. The hydraulic system of the crawler lifting vehicle for mine emulsion according to claim 4, wherein Two of the crawler hydraulic motors (6) are installed at the front end of the vehicle frame (16). A crawler drive wheel (21) is externally connected to the crawler hydraulic motor (6). Two crawler idler wheels are installed at the rear end of the vehicle frame (16). A crawler is sleeved on the crawler idler wheels and the crawler drive wheel (21).

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