Hydro-pneumatic suspension energy feedback device for front axle of module integrated mining wide-body dumper

Abstract

A hydro-pneumatic suspension energy feedback device for a front axle of a module integrated mining wide-body dumper comprises a mounting support, a hydraulic motor, a generator, a valve bank, a high-pressure energy accumulator and a low-pressure energy accumulator, the hydraulic motor is fixed to a hydraulic motor mounting seat through a bolt, and the generator is fixed to a generator mounting seat through a bolt; the high-pressure energy accumulator and the low-pressure energy accumulator are fixed on the mounting bracket through hoops and bolts, and the high-pressure energy accumulator is positioned above the low-pressure energy accumulator; the valve group is fixed on the mounting bracket through bolts, the hydraulic motor is connected with the valve group through a first steel pipe, the high-pressure energy accumulator is connected with the valve group through a second steel pipe, the low-pressure energy accumulator is directly connected with the valve group through a connector, and the valve group is provided with a straight-through connector connected with the suspension cylinder. Main components of the energy feedback device are integrated in the mounting bracket, the layout is reasonable and simple, the overall size is small, maintenance and mounting are convenient, the two energy accumulators are mounted up and down through the hoop, space is saved, and collision can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of dump trucks, in particular to an oil-gas suspension energy feeding device for the front axle of a modular integrated wide-body mining dump truck. Background Art

[0002] A vehicle suspension energy feeding system can be used to generate electricity from the energy generated by the vibration of the suspension cylinder. For example, a power-feeding type active suspension hydraulic control system for an emergency rescue vehicle with the Chinese patent publication number CN108482049A mainly includes: the c chamber of the actuator is connected to the B4 oil port of the servo valve, the d chamber of the actuator is connected to the A4 oil port of the servo valve, the P4 oil port of the servo valve is connected to the hydraulic source, and the T4 oil port of the servo valve is connected to the fuel tank. The a chamber of the actuator is connected to the A1 oil port of the first solenoid valve, and the B1 oil port of the first solenoid valve is connected to the fuel tank; the b chamber of the actuator is connected to the P2 oil port of the second solenoid valve, the T2 oil port of the second solenoid valve is connected to the fuel tank, the A2 oil port of the second solenoid valve is connected to the first accumulator, and the A2 oil port of the second solenoid valve is also connected to the A3 oil port of the third solenoid valve, and the B3 oil port of the third solenoid valve is connected to the hydraulic source or the second accumulator. Existing suspension energy feeding systems usually include two accumulators, which are large in volume. If the layout is unreasonable, the whole will occupy a large space, and the accumulators are prone to collision. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide an oil-gas suspension energy feeding device for the front axle of a modular integrated wide-body mining dump truck, with a reasonable layout, a small overall volume, and high installation reliability of the accumulator.

[0004] To solve the above technical problems, the technical solution of the present utility model is: an oil-gas suspension energy harvesting device for the front axle of a modular integrated mine-use wide-body dump truck, including a mounting bracket, a hydraulic motor, a generator, a valve group, a high-pressure accumulator, and a low-pressure accumulator. The hydraulic motor, the generator, the valve group, the high-pressure accumulator, and the low-pressure accumulator are installed inside the mounting bracket. The hydraulic motor is fixed to the hydraulic motor mounting seat by bolts, the hydraulic motor mounting seat is fixed to the mounting bracket, the generator is fixed to the generator mounting seat by bolts, the generator mounting seat is fixed to the mounting bracket, and the hydraulic motor is connected to the generator by a coupling. The high-pressure accumulator and the low-pressure accumulator are both fixed to the mounting bracket by clamps and bolts, and the high-pressure accumulator is located above the low-pressure accumulator. The valve group is fixed to the mounting bracket by bolts. The hydraulic motor is connected to the valve group through a first steel pipe, the high-pressure accumulator is connected to the valve group through a second steel pipe, the low-pressure accumulator is directly connected to the valve group through a connection joint, and a straight-through joint for connecting to a suspension cylinder is provided on the valve group. The principle of the present utility model: The main components of the energy harvesting device are integrated inside the mounting bracket, with a reasonable and simple layout, a relatively small overall volume, facilitating maintenance and installation. The two accumulators are installed vertically by clamps, saving space and avoiding collisions.

[0005] As an improvement, the mounting bracket includes an upper frame, a lower frame, and connecting columns provided between the upper frame and the lower frame. An installation space is formed inside the mounting bracket, and the hydraulic motor, the generator, the valve group, the high-pressure accumulator, and the low-pressure accumulator are arranged in the installation space.

[0006] As an improvement, the hydraulic motor, the generator, and the valve group are arranged on one side of the installation space, and the high-pressure accumulator and the low-pressure accumulator are arranged on the other side of the installation space.

[0007] As an improvement, the valve group includes a valve block, a check valve, and a normally open electro-hydraulic proportional cartridge valve.

[0008] As an improvement, the mounting bracket is welded by angle steel.

[0009] The beneficial effects brought by the present utility model compared with the prior art are as follows:

[0010] The main components of the energy harvesting device are integrated inside the mounting bracket, with a reasonable and simple layout, a relatively small overall volume, facilitating maintenance and installation. The two accumulators are installed vertically by clamps, saving space and avoiding collisions. Description of the Drawings

[0011] Figure 1 This is the top view of the present utility model.

[0012] Figure 2 This is the front side view of the present utility model.

[0013] Figure 3 This is the left side view of the present utility model.

[0014] Figure 4 This is the perspective view I of the present utility model.

[0015] Figure 5 This is the perspective view II of the present utility model.

[0016] Figure 6 This is the pipeline diagram of the present utility model. Detailed implementation manners

[0017] The present utility model will be further described below in conjunction with the accompanying drawings of the specification.

[0018] As Figures 1 to 6As shown in the figure, an oil-gas suspension energy harvesting device for the front axle of a modular integrated mine wide-body dump truck includes a mounting bracket 1, a hydraulic motor 7, a generator 5, a valve group 4, a high-pressure accumulator 2, and a low-pressure accumulator 8. The hydraulic motor 7, the generator 5, the valve group 4, the high-pressure accumulator 2, and the low-pressure accumulator 8 are installed inside the mounting bracket 1. The mounting bracket 1 is welded by angle steel, and the angle steel structure has high strength and can provide sufficient positions to support components and bolt installations. It includes an upper frame, a lower frame, and connecting columns provided between the upper frame and the lower frame. The upper frame and the lower frame are rectangular. An installation space is formed inside the mounting bracket 1, and the hydraulic motor 7, the generator 5, the valve group 4, the high-pressure accumulator 2, and the low-pressure accumulator 8 are arranged in the installation space. Specifically, the hydraulic motor 7, the generator 5, and the valve group 4 are arranged on one side of the installation space, and the high-pressure accumulator 2 and the low-pressure accumulator 8 are arranged on the other side of the installation space. The hydraulic motor 7 is fixed to the hydraulic motor mounting seat 72 by bolts, and the hydraulic motor mounting seat 72 is fixed to the lower frame by bolts. The generator 5 is fixed to the generator mounting seat 51 by bolts, and the generator mounting seat 51 is fixed to the lower frame by bolts. The hydraulic motor 7 is connected to the generator 5 through a coupling 6, and the generator 5 is located between the hydraulic motor 7 and the valve group 4. Both the high-pressure accumulator 2 and the low-pressure accumulator 8 are fixed to the mounting plate by a clamp 3 and bolts. The mounting plate is vertically arranged, the upper end of the mounting plate is connected to the upper frame, and the lower end of the mounting plate is connected to the lower frame. The high-pressure accumulator 2 is located above the low-pressure accumulator 8, and the interfaces of the high-pressure accumulator 2 and the low-pressure accumulator 8 face the side of the valve group 4. The valve group 4 is fixed to the lower frame by bolts, and the valve group 4 includes a valve block, a check valve, and a normally open electro-hydraulic proportional cartridge valve. The hydraulic motor 7 is connected to the valve group 4 through a first steel pipe 71, the high-pressure accumulator 2 is connected to the valve group 4 through a second steel pipe 21, the low-pressure accumulator 8 is directly connected to the valve group 4 through a connection joint 81, and a straight-through joint 41 connected to the suspension cylinder is provided on the valve group 4. The straight-through joint 41 is connected to the vehicle suspension cylinder through a hose. The principle of the present utility model: The main components of the energy harvesting device are integrated inside the mounting bracket 1, with a reasonable and simple layout, a relatively small overall volume, facilitating maintenance and installation. The two accumulators are installed vertically by clamps, saving space and avoiding collisions.

[0019] When the vehicle is impacted during driving, the suspension cylinder will be compressed, and the hydraulic oil in the cylinder will flow out, converting the mechanical energy of the vehicle vibration into hydraulic energy. After the hydraulic oil flows through the hose into the valve block 4 and enters the check valve, a part of it enters the high-pressure accumulator 2, compressing the nitrogen in the high-pressure accumulator 2, thereby converting the hydraulic energy into the compression potential energy of the accumulator. Another part flows through the normally open electro-hydraulic proportional cartridge valve and the hydraulic motor 7 and then enters the low-pressure accumulator 8 to absorb the impact generated by the vibration. When the hydraulic oil flows through the hydraulic motor 7, it will drive the hydraulic motor 7 to rotate, thereby converting the hydraulic energy into mechanical energy. When the hydraulic motor 7 rotates, it will drive the motor to rotate, and when the motor rotates, it cuts the magnetic induction line to generate electric energy, that is, the mechanical energy is converted into electric energy, and the electric energy is then stored in the storage battery, that is, the recovery of the mechanical energy of the vehicle vibration is realized.

[0020] When the suspension cylinder is compressed to the limit position, it will start to rebound and elongate. The hydraulic oil stored in the low-pressure accumulator 8 flows out and enters the suspension cylinder through the check valve. When the hydraulic oil in the high-pressure accumulator 2 flows out, it passes through the hydraulic motor 7 and then through the check valve into the suspension cylinder. At this time, the compression energy in the high-pressure accumulator 2 is converted into hydraulic energy and then into mechanical energy, and finally into electric energy.

[0021] When the vehicle drives over a road surface with high-frequency impacts, the control current of the normally open electro-hydraulic proportional cartridge valve can be reduced, thereby increasing the flow capacity of the solenoid valve. That is, at this time, the damping of the suspension system is reduced, and at the same time, the stiffness is also reduced. The suspension cylinder has a larger buffering stroke, thereby reducing the acceleration of the vibration and improving the ride comfort of the vehicle.

[0022] When the vehicle drives over a road surface with low-frequency impacts, the control current of the normally open electro-hydraulic proportional cartridge valve can be increased, thereby reducing the flow capacity of the solenoid valve. That is, at this time, the damping of the suspension system increases, and at the same time, the stiffness also increases, thereby reducing the amplitude of the vibration and preventing the piston rod from hitting the cylinder barrel of the suspension cylinder.

[0023] When the vehicle turns, due to the action of the centrifugal force, the vehicle will roll. The smaller the stiffness of the suspension cylinder, the more serious the roll. When the vehicle rolls, it will not only affect the comfort of the driver, but also pose a certain risk of rollover. By controlling the current of the normally open electro-hydraulic proportional cartridge valve to change its stiffness, the roll of the vehicle can be suppressed.

Claims

1. A modular integrated oil-gas suspension energy feeding device for the front axle of a wide-body mining dump truck, comprising a mounting bracket, a hydraulic motor, a generator, a valve group, a high-pressure accumulator and a low-pressure accumulator, characterized in that: The hydraulic motor, generator, valve group, high-pressure accumulator and low-pressure accumulator are installed in the mounting bracket; the hydraulic motor is fixed to the hydraulic motor mounting seat by bolts, the hydraulic motor mounting seat is fixed to the mounting bracket, the generator is fixed to the generator mounting seat by bolts, the generator mounting seat is fixed to the mounting bracket, and the hydraulic motor is connected to the generator through a coupling; the high-pressure accumulator and the low-pressure accumulator are both fixed to the mounting bracket by clamps and bolts, and the high-pressure accumulator is located above the low-pressure accumulator; the valve group is fixed to the mounting bracket by bolts, the hydraulic motor is connected to the valve group through a first steel pipe, the high-pressure accumulator is connected to the valve group through a second steel pipe, the low-pressure accumulator is directly connected to the valve group through a connecting joint, and the valve group is provided with a straight joint connected to the suspension cylinder.

2. The modular integrated oil-gas suspension energy feeding device for the front axle of a wide-body mining dump truck according to claim 1, characterized in that: The mounting bracket comprises an upper frame, a lower frame and a connecting column arranged between the upper frame and the lower frame. An installation space is formed in the mounting bracket, and the hydraulic motor, generator, valve group, high-pressure accumulator and low-pressure accumulator are arranged in the installation space.

3. The modular integrated oil-gas suspension energy feeding device for the front axle of a wide-body mining dump truck according to claim 2, characterized in that: The hydraulic motor, the generator and the valve group are arranged on one side of the installation space, and the high-pressure accumulator and the low-pressure accumulator are arranged on the other side of the installation space.

4. The modular integrated oil-gas suspension energy feeding device for the front axle of a wide-body mining dump truck according to claim 1, characterized in that: The valve group comprises a valve block, a one-way valve and a normally open electromagnetic proportional cartridge valve.

5. The modular integrated oil-gas suspension energy feeding device for the front axle of a wide-body mining dump truck according to claim 1, characterized in that: The mounting bracket is formed by welding angle steel.

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