Energy accumulator assembly, hydro-pneumatic suspension device and coal car

Abstract

The utility model relates to the technical field of coal cars, in particular to an energy accumulator assembly, a hydro-pneumatic suspension device and a coal car. The energy accumulator assembly comprises an energy accumulator body and a valve set, the valve set comprises a valve body, a one-way valve and a throttling valve, the one-way valve and the throttling valve are arranged on the valve body, the valve body is connected with the energy accumulator body through a flange assembly, and the one-way valve and the throttling valve are connected with a first suspension oil cylinder and a second suspension oil cylinder in the hydro-pneumatic suspension device. The throttle valve is used for controlling the flow of hydraulic oil between the energy accumulator body and the first suspension oil cylinder and between the energy accumulator body and the second suspension oil cylinder; the one-way valves are used for controlling one-way communication between the first suspension oil cylinder and the energy accumulator body and between the second suspension oil cylinder and the energy accumulator body. The damping characteristics of the first suspension oil cylinder and the second suspension oil cylinder can be changed, so that the buffering and damping effects of the hydro-pneumatic suspension device provided with the energy accumulator assembly are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal conveying vehicle technical field especially, relates to a kind of accumulator assembly, oil-gas suspension device and coal conveying vehicle. BACKGROUND

[0002] At present, no suspension system is arranged in the underground coal conveying vehicle, but the axle is directly connected with the frame, and the direct connection of the axle and the frame can easily lead to a large vibration frequency of the frame, thereby affecting the service life of the underground coal conveying vehicle.

[0003] However, if the existing suspension system is installed in the underground coal conveying vehicle, the space between the frame and the axle in the underground coal conveying vehicle is narrow, which can lead to difficulties in arranging the existing suspension system, and thus the stroke of the suspension cylinder in the suspension system is small, which can affect the damping effect of the suspension system on the underground coal conveying vehicle.

[0004] Therefore, a device capable of improving the damping effect of the suspension system on the underground coal conveying vehicle needs to be researched. SUMMARY

[0005] The utility model aims at at least one of the technical problems existing in prior art or related art.

[0006] Therefore, the utility model provides an accumulator assembly, the accumulator assembly is connected with the first suspension oil cylinder and the second suspension oil cylinder in the oil-gas suspension device by connecting the check valve and the throttle valve with the first suspension oil cylinder and the second suspension oil cylinder, so that the damping characteristics of the first suspension oil cylinder and the second suspension oil cylinder can be changed, and the buffering and damping effects of the oil-gas suspension device provided with the accumulator assembly can be improved.

[0007] The utility model further provides an oil-gas suspension device comprising the accumulator assembly.

[0008] The utility model further provides a coal conveying vehicle comprising the accumulator assembly or a coal conveying vehicle comprising the oil-gas suspension device.

[0009] According to the accumulator assembly of the first aspect of the utility model, the accumulator assembly is applied to the oil-gas suspension device, and comprises an accumulator body and a valve group, the valve group comprises a valve body, a check valve and a throttle valve arranged on the valve body, the valve body is connected with the accumulator body through a flange assembly, the check valve and the throttle valve are connected with the first suspension oil cylinder and the second suspension oil cylinder in the oil-gas suspension device, the throttle valve is used for controlling the flow of hydraulic oil between the accumulator body and the first suspension oil cylinder and between the accumulator body and the second suspension oil cylinder, and the check valve is used for controlling the one-way communication between the first suspension oil cylinder and the accumulator body and between the second suspension oil cylinder and the accumulator body.

[0010] Optionally, the check valve comprises:

[0011] The first channel is arranged on the valve body, and is connected with the first suspension oil cylinder and the second suspension oil cylinder through an oil line;

[0012] The second channel is arranged on the valve body, and one end of the second channel is connected with the first channel and the other end of the second channel is communicated with the accumulator body; the second channel is provided with a blocking cavity;

[0013] The blocking part is movably arranged in the blocking cavity, and the blocking part has an open position and a closed position; the open position is a position of the blocking part when the first suspension oil cylinder and the second suspension oil cylinder are in a compressed state, so that the second channel remains communicated; the closed position is a position of the blocking part when the first suspension oil cylinder and the second suspension oil cylinder are in an elongated state, so as to block the communication of the second channel.

[0014] Optionally, the second channel comprises a first channel part and a second channel part communicated with each other, and a radius of the second channel part is greater than a radius of the first channel part; one end of the first channel part away from the second channel part is connected with the first channel, and one end of the second channel part away from the first channel part is arranged on an outer wall of the valve body, and the one end of the second channel part away from the first channel part is provided with a baffle to form the blocking cavity together with the second channel part.

[0015] Optionally, the throttle valve comprises:

[0016] The third channel is arranged on the valve body and communicated with the second channel part; the third channel is also communicated with the first channel; the third channel is provided with a mounting cavity;

[0017] The damping part is mounted in the mounting cavity and covers one end of the third channel away from the second channel part; the damping part is used for limiting the flow of hydraulic oil between the second channel part and the first channel.

[0018] Optionally, the damping part comprises:

[0019] The damping flange is distributed with a plurality of damping holes; the damping flange is fixed in the mounting cavity by means of threaded cooperation to cover the third channel;

[0020] The connecting rod is connected with the damping flange at one end and abuts against a cover plate on the mounting cavity at the other end.

[0021] Optionally, an O-shaped sealing ring is arranged between the contact surface of the accumulator body and the valve body.

[0022] According to the oil-gas suspension device of the second aspect of the utility model, the first suspension oil cylinder is movably connected with the frame of the coal truck at one end and movably connected with the axle of the coal truck at the other end;

[0023] The first suspension oil cylinder is movably connected with the frame of the coal truck at one end and movably connected with the axle of the coal truck at the other end;

[0024] The second suspension oil cylinder is movably connected to the vehicle frame at one end and movably connected to the axle at the other end; and the first suspension oil cylinder and the second suspension oil cylinder are located on the same side of the coal transport vehicle.

[0025] The accumulator assembly according to the first aspect or any of the embodiments, the first suspension oil cylinder and the second suspension oil cylinder are both connected to the check valve and the throttle valve in the accumulator assembly.

[0026] Optionally, the first suspension oil cylinder and the second suspension oil cylinder are located on both sides of the axis of the axle.

[0027] Optionally, the cylinder barrel of the first suspension oil cylinder and the cylinder barrel of the second suspension oil cylinder are both movably connected to the vehicle frame through the first joint bearing; and the lever of the first suspension oil cylinder and the lever of the second suspension oil cylinder are both movably connected to the axle through the second joint bearing.

[0028] The coal transport vehicle according to the third aspect of the present application comprises the accumulator assembly according to the first aspect or any of the embodiments, or the oil-gas suspension device according to the second aspect or any of the embodiments.

[0029] The above technical solution has at least the following advantages or beneficial effects:

[0030] For the accumulator assembly of the present application, the accumulator body and the valve body are connected through the flange assembly, which can avoid the problem of loosening of the accumulator body and the valve body due to threaded connection, thereby improving the structural stability of the accumulator assembly, and further avoiding the influence of the loosening between the accumulator body and the valve body on the buffering and damping effect of the oil-gas suspension device on the coal transport vehicle; at the same time, by providing the check valve and the throttle valve on the valve body and connecting the check valve and the throttle valve to the first suspension oil cylinder and the second suspension oil cylinder in the oil-gas suspension device, the damping characteristics of the first suspension oil cylinder and the second suspension oil cylinder can be changed, thereby improving the buffering and damping effect of the oil-gas suspension device provided with the accumulator assembly.

[0031] The oil-gas suspension device provided by the present application comprises the accumulator assembly described above, and since the accumulator assembly has the technical effects described above, the oil-gas suspension device provided with the accumulator assembly should also have corresponding technical effects.

[0032] The coal transport vehicle provided by the present application comprises the accumulator assembly or the oil-gas suspension device described above, and since the accumulator assembly or the oil-gas suspension device has the technical effects described above, the coal transport vehicle provided with the accumulator assembly or the oil-gas suspension device should also have corresponding technical effects. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 Fig. 1 shows a structural schematic diagram of an accumulator assembly according to an embodiment of the present application;

[0034] Figure 2 A structural schematic view of a damping part of one embodiment provided by the utility model is shown.

[0035] Figure 3 A top view of the damping part in the Figure 2 is shown.

[0036] Figure 4 A structural schematic view of a baffle of one embodiment provided by the utility model is shown.

[0037] Figure 5 A structural schematic view of an oil-gas suspension device of one embodiment provided by the utility model is shown.

[0038] Figure 6 A principle diagram of the oil-gas suspension device in the Figure 5 is shown.

[0039]

BRIEF DESCRIPTION OF DRAWINGS

[0040] 1, accumulator body;

[0041] 2, valve group, 201, valve body, 202, check valve, 203, throttle valve, 2021, first passage, 2022, second passage, 2023, blocking cavity, 2024, blocking part, 2025, baffle, 2031, third passage, 2032, damping part, 2033, mounting cavity, 2034, cover plate, 2022a, first passage part, 2022b, second passage part, 2032a, damping flange, 2032b, connecting rod;

[0042] 3, flange assembly;

[0043] 4, first suspension oil cylinder;

[0044] 5, second suspension oil cylinder;

[0045] 6, O-shaped sealing ring;

[0046] 7, first oil pipe;

[0047] 8, second oil pipe. DETAILED DESCRIPTION

[0048] In order to better explain the utility model, so as to facilitate understanding, the utility model is described in detail below by specific implementation manners combined with the drawings.

[0049] The suspension system on the vehicle is to input the road impact through the wheel to the axle, so that the road impact is transmitted to the frame end through the suspension system, therefore, the suspension system mainly plays the role of damping and buffering of the running vehicle, so that the vehicle reduces the road impact effect, protects the key components such as the frame on the vehicle, and also can improve the ride comfort of the vehicle.

[0050] At present, the suspension system is not arranged in the underground coal transport vehicle, and the axle is directly connected with the frame, so that the underground coal transport vehicle mainly has the following problems: 1) the vibration isolation rate is 0%, the road impact directly acts on the frame, and there is no any buffer in the middle, and the riding comfort is very poor; 2) the failure rate of the key components is high, since the axle is directly connected with the frame, the axle directly impacts the frame and other structural parts, so that the vibration frequency of the key components on the frame is large, and the fatigue life is reduced.

[0051] And the existing suspension system is installed in the underground coal transport vehicle, due to the narrow space between the frame and the axle in the underground coal transport vehicle, the arrangement of the existing suspension system is difficult, and then due to the small stroke of the suspension cylinder in the suspension system, the damping effect on the underground coal transport vehicle is poor.

[0052] In order to solve at least one of the problems in the prior art or related art, the utility model provides a kind of accumulator assembly, the accumulator assembly includes accumulator body and valve group, valve group includes valve body, and one-way valve and throttle valve being arranged on valve body, valve body is connected with accumulator body by flange assembly, one-way valve and throttle valve are connected with first suspension cylinder and second suspension cylinder in oil-gas suspension device;Throttle valve is used to control the flow of hydraulic oil between accumulator body and first suspension cylinder, and between accumulator body and second suspension cylinder;One-way valve is used to control the one-way communication between first suspension cylinder and accumulator body, and between second suspension cylinder and accumulator body.The utility model connects accumulator body and valve body by flange assembly, can avoid the problem that accumulator body and valve body are easily loose due to threaded connection, to improve the structural stability of accumulator assembly;At the same time, by being provided with one-way valve and throttle valve on valve body, and making one-way valve and throttle valve be connected with first suspension cylinder and second suspension cylinder in oil-gas suspension device, the damping characteristics of first suspension cylinder and second suspension cylinder can be changed, to improve the buffering and damping effect of oil-gas suspension device provided with the accumulator assembly.

[0053] The accumulator assembly, oil-gas suspension device and coal transport vehicle according to some embodiments provided by the utility model are described below with reference to the drawings.

[0054] Reference is made to Figures 1 to 4The utility model provides a kind of accumulator assembly of the first aspect embodiment provided by the utility model, the accumulator assembly is applied to coal truck, it includes accumulator body 1 and valve group 2, valve group 2 includes valve body 201, and one-way valve 202 and throttle valve 203 being arranged on valve body 201, valve body 201 is connected with accumulator body 1 by flange assembly 3, one-way valve 202 and throttle valve 203 are connected with first suspension oil cylinder 4 and second suspension oil cylinder 5 in oil-gas suspension device;Throttle valve 203 is used to control the flow of hydraulic oil between accumulator body 1 and first suspension oil cylinder 4, and between accumulator body 1 and second suspension oil cylinder 5;One-way valve 202 is used to control the one-way communication between first suspension oil cylinder 4 and accumulator body 1, and between second suspension oil cylinder 5 and accumulator body 1.

[0055] Wherein, flange assembly 3 can be split flange.

[0056] It needs to be explained that oil-gas suspension device includes first suspension oil cylinder 4 and second suspension oil cylinder 5, and first suspension oil cylinder 4 and second suspension oil cylinder 5 are arranged on the same side of the vehicle body of coal truck.

[0057] Here, after valve body 201 is connected with accumulator body 1 by flange assembly 3, one-way valve 202 and throttle valve 203 are located between accumulator body 1 and first suspension oil cylinder 4, while one-way valve 202 and throttle valve 203 are also located between accumulator body 1 and second suspension oil cylinder 5, so that throttle valve 203 can control the flow of hydraulic oil between accumulator body 1 and first suspension oil cylinder 4, while also control the flow of hydraulic oil between accumulator body 1 and second suspension oil cylinder 5, and one-way valve 202 can control between first suspension oil cylinder 4 and accumulator body 1, while also control the one-way communication between second suspension oil cylinder 5 and accumulator body 1.

[0058] In the embodiment, accumulator body 1 and valve body 201 are connected by flange assembly 3, which can avoid the problem that accumulator body 1 and valve body 201 are easy to loosen due to threaded connection, to improve the structural stability of the accumulator assembly, and further avoid the influence of the accumulator assembly on the buffering and damping effect of the oil-gas suspension device on the coal truck due to the looseness between accumulator body 1 and valve body 201;At the same time, by providing one-way valve 202 and throttle valve 203 on valve body 201, and connecting one-way valve 202 and throttle valve 203 with first suspension oil cylinder 4 and second suspension oil cylinder 5 in oil-gas suspension device, the damping characteristics of first suspension oil cylinder 4 and second suspension oil cylinder 5 can be changed, to improve the buffering and damping effect of the oil-gas suspension device provided with the accumulator assembly.

[0059] In some possible implementation examples, the one-way valve 202 includes a first channel 2021 and a second channel 2022, the first channel 2021 is arranged on the valve body 201, the first channel 2021 is connected to the first suspension oil cylinder 4 and the second suspension oil cylinder 5 through an oil passage, the second channel 2022 is arranged on the valve body 201, one end of the second channel 2022 is connected to the first channel 2021, and the other end of the second channel 2022 is in communication with the accumulator body 1, the second channel 2022 is provided with a blocking cavity 2023, a blocking part 2024 is movably arranged in the blocking cavity 2023, the blocking part 2024 has an open position and a closed position, the open position is a position of the blocking part 2024 when the first suspension oil cylinder 4 and the second suspension oil cylinder 5 are both in a compression state, so that the second channel 2022 remains in communication, and the closed position is a position of the blocking part 2024 when the first suspension oil cylinder 4 and the second suspension oil cylinder 5 are both in an elongation state, so as to block the communication of the second channel 2022.

[0060] In some possible implementation examples, the one-way valve 202 includes a first channel 2021 and a second channel 2022, the first channel 2021 is arranged on the valve body 201, the first channel 2021 is connected to the first suspension oil cylinder 4 and the second suspension oil cylinder 5 through an oil passage, the second channel 2022 is arranged on the valve body 201, one end of the second channel 2022 is connected to the first channel 2021, and the other end of the second channel 2022 is in communication with the accumulator body 1, the second channel 2022 is provided with a blocking cavity 2023, a blocking part 2024 is movably arranged in the blocking cavity 2023, the blocking part 2024 has an open position and a closed position, the open position is a position of the blocking part 2024 when the first suspension oil cylinder 4 and the second suspension oil cylinder 5 are both in a compression state, so that the second channel 2022 remains in communication, and the closed position is a position of the blocking part 2024 when the first suspension oil cylinder 4 and the second suspension oil cylinder 5 are both in an elongation state, so as to block the communication of the second channel 2022.

[0061] It can be understood that, when the first suspension oil cylinder 4 and the second suspension oil cylinder 5 are both in a compression state, the hydraulic oil in the first suspension oil cylinder 4 and the second suspension oil cylinder 5 flows into the second channel 2022 through the first channel 2021, and after the hydraulic oil enters the blocking cavity 2023, the blocking part 2024 is driven by the hydraulic oil to move to the open position, so that the hydraulic oil flows into the accumulator body 1 through the second channel 2022 in the communication state; when the first suspension oil cylinder 4 and the second suspension oil cylinder 5 are both in an elongation state, the hydraulic oil in the first suspension oil cylinder 4 and the second suspension oil cylinder 5 stops flowing into the first channel 2021, at this time, the hydraulic oil in the accumulator body 1 flows into the second channel 2022, so that the blocking part 2024 in the blocking cavity 2023 is driven by the hydraulic oil to move to the closed position, thereby blocking the communication of the second channel 2022, and the hydraulic oil cannot flow into the first channel 2021 through the second channel 2022.

[0062] In the embodiment, by arranging the first channel 2021 and the second channel 2022 in communication with each other on the valve body 201, and movably arranging the blocking part 2024 in the blocking cavity 2023 on the second channel 2022, when the first suspension oil cylinder 4 and the second suspension oil cylinder 5 are both in a compression state, the blocking part 2024 moves to the open position to keep the communication of the second channel 2022, and when the first suspension oil cylinder 4 and the second suspension oil cylinder 5 are both in an elongation state, the blocking part 2024 moves to the closed position to block the communication of the second channel 2022, thereby realizing the control of the one-way communication between the first suspension oil cylinder 4 and the accumulator body 1 and between the second suspension oil cylinder 5 and the accumulator body 1 by the blocking part 2024.

[0063] In some possible implementation examples, the second channel 2022 comprises a first channel portion 2022a and a second channel portion 2022b in communication with each other, the radius of the second channel portion 2022b is greater than the radius of the first channel portion 2022a; one end of the first channel portion 2022a away from the second channel portion 2022b is connected with the first channel 2021, and one end of the second channel portion 2022b away from the first channel portion 2022a is arranged on the outer wall of the valve body 201, and a baffle 2025 is arranged on the one end of the second channel portion 2022b away from the first channel portion 2022a, so that the second channel portion 2022b and the baffle 2025 form a plugging cavity 2023.

[0064] Here, the first channel portion 2022a and the second channel portion 2022b can be coaxially arranged, and one end of the second channel portion 2022b away from the first channel portion 2022a can be in communication with the accumulator body 1, and the axis direction of the second channel 2022 is perpendicular to the axis direction of the first channel 2021.

[0065] Among them, referring to Figure 4 A plurality of through holes are arranged on the baffle 2025, so that the hydraulic oil in the second channel portion 2022b can flow into the accumulator body 1 through the through holes.

[0066] It should be noted that the radius of the cross section of the plugging portion 2024 is smaller than the radius of the cross section of the plugging cavity 2023; a tapered surface is arranged at the connection between the first channel portion 2022a and the second channel portion 2022b, and after the plugging portion 2024 moves to the second position, the plugging portion 2024 can be in contact with the tapered surface to block the communication of the second channel 2022.

[0067] In the embodiment, by designing the second channel 2022 as a structure of the first channel portion 2022a and the second channel portion 2022b in communication with each other, and making the radius of the second channel portion 2022b greater than the radius of the second channel portion 2022b, and arranging the baffle 2025 on the one end of the second channel portion 2022b away from the first channel portion 2022a, so that the second channel portion 2022b and the baffle 2025 form the plugging cavity 2023, and then the plugging portion 2024 located in the plugging cavity 2023 can be plugged by moving to be in contact with the first channel portion 2022a, and the plugging portion 2024 can be kept in communication with the second channel 2022 by moving away from the first channel portion 2022a.

[0068] In some possible implementation embodiments, the throttle valve 203 comprises a third channel 2031 and a damping portion 2032, the third channel 2031 is arranged on the valve body 201 and communicates with the second channel portion 2022b, the third channel 2031 also communicates with the first channel 2021, and the third channel 2031 is provided with a mounting cavity 2033, the damping portion 2032 is mounted in the mounting cavity 2033 and covers the end of the third channel 2031 away from the second channel portion 2022b, and the damping portion 2032 is used to limit the flow of hydraulic oil between the second channel portion 2022b and the first channel 2021.

[0069] When the first suspension oil cylinder 4 and the second suspension oil cylinder 5 are both in the compression state, the hydraulic oil in the first suspension oil cylinder 4 and the second suspension oil cylinder 5 flows through the first channel 2021, part of which flows into the second channel 2022 and the other part flows into the third channel 2031, so that the hydraulic oil flowing into the third channel 2031 flows into the second channel portion 2022b under the damping action of the damping portion 2032, thereby achieving the buffering effect of the hydraulic oil entering the accumulator body 1, when the first suspension oil cylinder 4 and the second suspension oil cylinder 5 are both in the elongation state, the hydraulic oil in the accumulator body 1 flows through the second channel portion 2022b, and then flows into the third channel 2031 after the damping portion 2032 completes the damping action on the hydraulic oil, and then flows into the first suspension oil cylinder 4 and the second suspension oil cylinder 5 through the first channel 2021, so as to change the damping characteristics of the first suspension oil cylinder 4 and the second suspension oil cylinder 5 and improve the buffering and damping effect of the oil-gas suspension device provided with the accumulator assembly.

[0070] In some possible implementation embodiments, referring to Figure 2 and Figure 3 , the damping portion 2032 comprises a damping flange 2032a and a connecting rod 2032b, the damping flange 2032a is provided with a plurality of damping holes, the damping flange 2032a is fixed in the mounting cavity 2033 by thread cooperation to cover the third channel 2031, and one end of the connecting rod 2032b is connected with the damping flange 2032a and the other end abuts against the cover plate 2034 located on the mounting cavity 2033.

[0071] Here, by arranging the connecting rod 2032b on the side of the damping flange 2032a away from the third channel 2031 and making the connecting rod 2032b abut against the cover plate 2034 located on the mounting cavity 2033, the damping flange 2032a can be stably fixed in the mounting cavity 2033, thereby effectively avoiding the problem of the damping flange 2032a coming off due to thread loosening and preventing the failure of the throttle valve 203.

[0072] In some possible implementation embodiments, an O-shaped sealing ring 6 is arranged between the contact surface of the accumulator body 1 and the valve body 201.

[0073] In the embodiment, by arranging the O-shaped sealing ring 6 between the contact surface of the accumulator body 1 and the valve body 201, the oil leakage of the accumulator body 1 during use can be avoided.

[0074] The second aspect embodiment of the utility model discloses an oil gas suspension device, referring to Figure 5 And Figure 6 The device comprises a first suspension oil cylinder 4, a second suspension oil cylinder 5 and the accumulator assembly in any of the above embodiments, one end of the first suspension oil cylinder 4 is movably connected with the frame of the coal truck, the other end is movably connected with the axle of the coal truck, one end of the second suspension oil cylinder 5 is movably connected with the frame, the other end is movably connected with the axle, the first suspension oil cylinder 4 and the second suspension oil cylinder 5 are located on the same side of the coal truck, and the first suspension oil cylinder 4 and the first suspension oil cylinder 4 are connected with the check valve 202 and the throttle valve 203 in the accumulator assembly.

[0075] Here, by connecting the first suspension oil cylinder 4 and the second suspension oil cylinder 5 with the check valve 202 and the throttle valve 203 on the valve body 201, an oil gas suspension device structure in the form of double-cylinder single accumulator is formed, so that the first suspension oil cylinder 4 and the second suspension oil cylinder 5 located on the same side of the coal truck drive the same accumulator body 1, which can effectively solve the problem of insufficient space for arranging the oil gas suspension device on the coal truck in the prior art, improve the smoothness of the coal truck and improve the comfort of the driver.

[0076] The accumulator body 1 can be a diaphragm accumulator or a bladder accumulator.

[0077] Here, the accumulator body 1 is taken as a diaphragm accumulator as an example to illustrate the working principle of the accumulator assembly in the oil gas suspension device, when the axle of the coal truck rises and falls with the road surface, the extension and contraction of the first suspension oil cylinder 4 and the second suspension oil cylinder 5 are changed, the hydraulic oil in the first suspension oil cylinder 4 and the second suspension oil cylinder 5 enters and exits the diaphragm accumulator through the check valve 202 and the throttle valve 203 of the valve group 2 to compress the nitrogen in the diaphragm accumulator, so as to realize the buffering and damping effect of the oil gas suspension device on the coal truck.

[0078] Since the oil gas suspension device of the embodiment comprises any of the accumulator assemblies in the above first aspect, it has the beneficial effects of any of the above embodiments, which will not be repeated here.

[0079] In some possible implementations, the first suspension oil cylinder 4 and the second suspension oil cylinder 5 are located on both sides of the axis of the axle.

[0080] The first suspension oil cylinder 4 and the second suspension oil cylinder 5 can be symmetrically arranged with the axis of the axle as the center line.

[0081] Here, the oil-gas suspension device is in the form of oil-gas separation, that is, hydraulic oil is stored in the oil cavity of the first suspension oil cylinder 4, the second suspension oil cylinder 5, the oil pipe, the valve group 2 and the accumulator body; and nitrogen is stored in the gas cavity of the accumulator. The first suspension oil cylinder 4 and the second suspension oil cylinder 5 are movably connected with the axle and the frame, and are arranged on the left and right sides of the axis of the axle; the rodless cavity of the first suspension oil cylinder 4 is connected with the valve group 2 through the first oil pipe 7, and the rodless cavity of the second suspension oil cylinder 5 is connected with the valve group 2 through the second oil pipe 8.

[0082] In the embodiment, by arranging the first suspension oil cylinder 4 and the second suspension oil cylinder 5 on the left and right sides of the axis of the axle, the first suspension oil cylinder 4 and the second suspension oil cylinder 5 can respectively buffer the left and right sides of the axle, so that the damping effect of the coal truck provided with the oil-gas suspension device is improved.

[0083] In some possible implementation, the cylinder barrel of the first suspension oil cylinder 4 and the cylinder barrel of the second suspension oil cylinder 5 are movably connected with the frame through the first joint bearing; and the lever of the first suspension oil cylinder 4 and the lever of the second suspension oil cylinder 5 are movably connected with the axle through the second joint bearing.

[0084] Here, by movably connecting the cylinder barrel of the first suspension oil cylinder 4 and the cylinder barrel of the second suspension oil cylinder 5 with the frame through the first joint bearing, and movably connecting the lever of the first suspension oil cylinder 4 and the lever of the second suspension oil cylinder 5 with the axle through the second joint bearing, it can be ensured that the cylinder barrel of the first suspension oil cylinder 4 and the cylinder barrel of the second suspension oil cylinder 5 only bear axial force and no lateral force, so that the risk of eccentric wear and oil leakage of the first suspension oil cylinder 4 and the second suspension oil cylinder 5 is avoided.

[0085] The coal truck of the third aspect embodiment of the utility model comprises the accumulator assembly in any one of the above embodiments, or the oil-gas suspension device in any one of the above embodiments.

[0086] Since the coal truck of the embodiment comprises any one of the accumulator assemblies in the first aspect above, or any one of the oil-gas suspension devices in the second aspect above, the beneficial effects of any one of the above embodiments are achieved, which will not be described here.

[0087] In the description of the utility model, it should be understood that the terms "first" and "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0088] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through intermediate medium indirectly connect;Can be two element inside communication or two element mutual action relation.For ordinary skilled person in the art, can understand the specific meaning of above-mentioned terms in the utility model according to specific circumstances.

[0089] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through intermediate medium indirectly connect;Can be two element inside communication or two element mutual action relation.For ordinary skilled person in the art, can understand the specific meaning of above-mentioned terms in the utility model according to specific circumstances.

[0090] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the skilled person in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0091] Although the embodiments of the present application have been shown and described above, it will be understood that the above embodiments are exemplary and should not be construed as limiting the present application, and those skilled in the art can modify, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An energy storage assembly used in a hydropneumatic suspension system, characterized in that, The device includes an accumulator body and a valve assembly. The valve assembly includes a valve body, a check valve and a throttle valve mounted on the valve body. The valve body is connected to the accumulator body via a flange assembly. The check valve and the throttle valve are both connected to the first and second suspension cylinders in the hydropneumatic suspension device. The throttle valve controls the flow rate of hydraulic oil between the accumulator body and the first suspension cylinder, and between the accumulator body and the second suspension cylinder. The check valve controls the one-way communication between the first suspension cylinder and the accumulator body, and between the second suspension cylinder and the accumulator body.

2. The energy storage assembly according to claim 1, characterized in that, The one-way valve includes: The first channel is located on the valve body; the first channel can be connected to both the first suspension cylinder and the second suspension cylinder via an oil circuit. A second channel is provided on the valve body; one end of the second channel is connected to the first channel, and the other end of the second channel is connected to the accumulator body; a sealing cavity is provided on the second channel. A sealing part is movably disposed within the sealing cavity. The sealing part has an open position and a closed position. The open position is the position of the sealing part when both the first suspension cylinder and the second suspension cylinder are in a compressed state, so as to keep the second channel connected. The closed position is the position of the sealing part when both the first suspension cylinder and the second suspension cylinder are in an extended state, so as to block the connection of the second channel.

3. The energy storage assembly according to claim 2, characterized in that, The second channel includes a first channel portion and a second channel portion that are interconnected, and the radius of the second channel portion is greater than the radius of the first channel portion; the end of the first channel portion away from the second channel portion is connected to the first channel, the end of the second channel portion away from the first channel portion is disposed on the outer wall of the valve body, and a baffle is provided on the end of the second channel portion away from the first channel portion, so that the second channel portion and the baffle form the sealing cavity.

4. The energy storage assembly according to claim 3, characterized in that, The throttle valve includes: A third channel is provided on the valve body and communicates with the second channel; the third channel is also communicated with the first channel; a mounting cavity is provided on the third channel; A damping part is installed inside the mounting cavity and covers the end of the third channel away from the second channel; the damping part is used to limit the flow rate of hydraulic oil between the second channel and the first channel.

5. The energy storage assembly according to claim 4, characterized in that, The damping component includes: A damping flange is provided with multiple damping holes; the damping flange is fixed in the mounting cavity by a threaded connection to cover the third channel; The connecting rod has one end connected to the damping flange and the other end abutting against the cover plate located on the mounting cavity.

6. The energy storage assembly according to any one of claims 1 to 5, characterized in that, An O-ring is provided between the contact surfaces of the accumulator body and the valve body.

7. A hydropneumatic suspension device, characterized in that, include: The first suspension cylinder is movably connected at one end to the frame of the coal car and at the other end to the axle of the coal car. The second suspension cylinder is movably connected at one end to the vehicle frame and at the other end to the axle; the first suspension cylinder and the second suspension cylinder are located on the same side of the coal transport car. In the accumulator assembly as described in any one of claims 1 to 6, both the first suspension cylinder and the first suspension cylinder are connected to the one-way valve and the throttle valve in the accumulator assembly.

8. The hydropneumatic suspension device according to claim 7, characterized in that, The first suspension cylinder and the second suspension cylinder are located on both sides of the axis of the axle.

9. The hydropneumatic suspension device according to claim 7, characterized in that, The cylinder barrels of the first suspension cylinder and the second suspension cylinder are both movably connected to the vehicle frame via a first joint bearing; the levers of the first suspension cylinder and the second suspension cylinder are both movably connected to the axle via a second joint bearing.

10. A coal transport vehicle, characterized in that, Includes the energy storage assembly as described in any one of claims 1 to 6, or the hydropneumatic suspension device as described in any one of claims 7 to 9.

Images