Combined hydraulic vibration absorber

Abstract

The utility model relates to the technical field of hydraulic equipment, and provides a combined hydraulic vibration absorber which comprises a middle connecting body and at least two impedance elements, the middle connecting body is provided with an inlet and an outlet, and the at least two impedance elements are arranged on the middle connecting body in the direction from the inlet to the outlet. By means of the technical scheme, the problem that in the prior art, a hydraulic system vibration absorber is single in vibration absorbing performance and difficult to meet the requirement for vibration absorbing of a hydraulic system is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic equipment technical field, specifically, relate to a combined hydraulic damper. BACKGROUND

[0002] Pressure pulsation exists in the hydraulic pipeline due to the pump, and the opening and closing of the electromagnetic valve can also cause pressure impact, and the pressure pulsation and pressure impact can easily cause the instability of the hydraulic system and cause the vibration of the pipeline and the element, and even reduce the service life of the element.

[0003] At present, the hydraulic damper adopts a hydraulic impedance to reduce the vibration and pressure pulsation of the hydraulic system, and only one kind of hydraulic impedance can only adjust the static characteristic or dynamic characteristic of the hydraulic system. Since the requirement for the hydraulic system vibration is higher and higher, the above-mentioned damping mode has certain limitation, and therefore a damper capable of better adapting to the hydraulic system is required. UTILITY MODEL CONTENTS

[0004] The utility model provides a combined hydraulic damper, which solves the problem that the damping performance of the hydraulic system damper in the prior art is single and difficult to meet the damping requirement of the hydraulic system.

[0005] The technical scheme of the utility model is as follows:

[0006] A combined hydraulic damper, the damper comprises an intermediate connecting body and at least two impedance elements, wherein the intermediate connecting body is provided with an inlet and an outlet, and the at least two impedance elements are arranged on the intermediate connecting body along the direction from the inlet to the outlet.

[0007] The at least two impedance elements can be arranged in parallel or in series on the intermediate connecting body along the direction from the inlet to the outlet.

[0008] The impedance elements comprise at least two of a liquid resistance element, a liquid sensing element and a liquid capacity element.

[0009] The liquid resistance element comprises a first connecting channel, a second connecting channel and a liquid resistance channel, wherein the liquid resistance channel is arranged in the middle of the first connecting channel and the second connecting channel, and the diameter of the liquid resistance channel is smaller than the diameter of the first connecting channel and the second connecting channel.

[0010] The liquid sensing element comprises an energy storage channel and an external force source, one end of the energy storage channel is communicated with the intermediate connecting body, and the other end is communicated with the external force source.

[0011] The liquid capacity element comprises an energy storage container with a cavity, a diaphragm and a gas charging and discharging unit, the energy storage container comprises a hydraulic port and a gas port, wherein the gas charging and discharging unit is arranged on the gas port, and the hydraulic port is used for connecting the intermediate connector, and the diaphragm is arranged between the gas port and the hydraulic port.

[0012] The working principle and beneficial effects of the utility model are as follows:

[0013] In the utility model, a combined hydraulic damper is disclosed, which is connected into a hydraulic system through an intermediate connector, at least two impedance elements are installed on the intermediate connector, the impedance elements are of different types, and are installed between the inlet and the outlet of the intermediate connector, therefore, the hydraulic medium in the hydraulic system will pass through each impedance element from the inlet to the outlet, thereby jointly inhibiting or even eliminating the hydraulic vibration of the hydraulic system, since more than two types of impedance elements are adopted, the hydraulic system can select more suitable impedance elements when the hydraulic medium passes through each impedance element according to the actual situation, select reasonable hydraulic impedance types, improve the static and dynamic characteristics of the hydraulic system, improve the hydraulic stability, and compared with the prior art, the technical scheme is more widely applicable, can better adapt to the damping demand of the hydraulic system, and improves the stability of the hydraulic system. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be explained in further detail in combination with the drawings and specific embodiments.

[0015] Figure 1 It is a structure schematic view of the combined hydraulic damper of the utility model arranged in series;

[0016] Figure 2 It is a structure schematic view of the combined hydraulic damper of the utility model arranged in parallel;

[0017] Figure 3 It is a structure schematic view of one of the hydraulic resistance elements in the utility model;

[0018] Figure 4 It is a structure schematic view of one of the hydraulic resistance elements in the utility model;

[0019] Figure 5 It is a structure schematic view of one of the hydraulic resistance elements in the utility model;

[0020] In the drawing: 1, intermediate connector, 2, inlet, 3, outlet, 6, hydraulic resistance element, 7, hydraulic sensing element, 8, liquid capacity element, 9, first connecting channel, 10, second connecting channel, 11, hydraulic resistance channel, 12, energy storage channel, 13, external force source, 14, energy storage container, 15, diaphragm, 16, gas charging and discharging unit, 17, hydraulic port, 18, gas port. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0022] As shown in the drawings, the present embodiment provides a combined hydraulic damper, the damper comprises an intermediate connecting body 1 and at least two impedance elements, wherein the intermediate connecting body 1 is provided with an inlet 2 and an outlet 3, and the at least two impedance elements are arranged on the intermediate connecting body 1 along the direction from the inlet 2 to the outlet 3. Figures 1-5 In the present embodiment, the intermediate connecting body 1 is connected into the hydraulic system, and at least two impedance elements are installed on the intermediate connecting body 1. The impedance elements are of different types and are installed between the inlet 2 and the outlet 3 of the intermediate connecting body 1. Therefore, the hydraulic medium in the hydraulic system will pass through each impedance element from the inlet 2 to the outlet 3, thereby jointly suppressing or even eliminating the hydraulic vibration of the hydraulic system. Since two or more types of impedance elements are used, the hydraulic system can select more suitable impedance elements when the hydraulic medium passes through each impedance element according to the actual situation, select reasonable hydraulic impedance types, improve the static and dynamic characteristics of the hydraulic system, and improve the hydraulic stability. Compared with the prior art, the present application has wider applicability and can better adapt to the damping requirements of the hydraulic system and improve the stability of the hydraulic system.

[0023] It should be noted that the impedance elements can be connected to the intermediate connecting body 1 in two or more ways, and the intermediate connecting body 1 can have multiple structural forms to facilitate connection into the hydraulic system, thereby achieving communication and damping effect.

[0024] The at least two impedance elements can be arranged in parallel or in series on the intermediate connecting body 1 along the direction from the inlet 2 to the outlet 3.

[0025] Based on the above embodiments, the intermediate connecting body 1 can have multiple structural forms, and the impedance elements of different types can be connected in parallel or in series on the intermediate connecting body. Based on the prior art, the hydraulic damper uses a single impedance element, the impedance type is not easy to change, the impedance size is fixed and not easy to adjust, the placement position is fixed and not easy to adjust, and it is not easy to change the impedance type according to the actual needs of the hydraulic system. The hydraulic system has a long debugging period. The above scheme facilitates combined assembly and can reasonably arrange the installation position of the impedance elements, thereby better adapting to the hydraulic system.

[0026] ​

[0027] The impedance element includes at least two of the liquid resistance element 6, the liquid sensing element 7 and the liquid capacity element 8.

[0028] In this embodiment, the impedance element can be at least two of the liquid resistance element 6, the liquid sensing element 7 and the liquid capacity element 8. Various combinations can be designed according to the specific installation. In possible embodiments, the above three impedance elements are used, and the intermediate connector 1 can be connected in series or in parallel.

[0029] The liquid resistance element 6 includes a first connecting channel 9, a second connecting channel 10 and a liquid resistance channel 11. The liquid resistance channel 11 is arranged between the first connecting channel 9 and the second connecting channel 10, and the diameter of the liquid resistance channel 11 is smaller than the diameters of the first connecting channel 9 and the second connecting channel 10.

[0030] In this embodiment, the liquid resistance element 6 can be a metal piece with the first connecting channel 9, the second connecting channel 10 and the liquid resistance channel 11 arranged inside. The diameter of the liquid resistance channel 11 is smaller than the diameters of the first connecting channel 9 and the second connecting channel 10. The liquid resistance channel 11 is between the first connecting channel 9 and the second connecting channel 10. The ports of the first connecting channel 9 and the second connecting channel 10 are provided with threads to facilitate connection to the intermediate connector 1. When the hydraulic medium passes through the first connecting channel 9 and then the liquid resistance channel 11, the cross-sectional area decreases, thereby forming impedance and achieving vibration damping.

[0031] The liquid sensing element 7 includes an energy storage channel 12 and an external force source 13. One end of the energy storage channel 12 is in communication with the intermediate connector 1, and the other end is in communication with the external force source 13.

[0032] In this embodiment, the liquid sensing element 7 is a metal piece with the energy storage channel 12 arranged inside. One end of the energy storage channel 12 is connected to the intermediate connector 1 and then communicates with the hydraulic system, and the other end communicates with the external force source 13 outside. The internal energy storage channel 12 can be a spiral channel to expand the energy storage space of the internal hydraulic medium. The external force source 13 can be a pump source connected to the energy storage channel 12. When the hydraulic medium needs to be accelerated, the pump source applies an external force to push the hydraulic medium in the energy storage channel 12. When the hydraulic medium needs to be decelerated, the external force is adjusted to achieve deceleration. In turn, the flow of the hydraulic medium in the hydraulic system is adjusted to achieve vibration damping.

[0033] The liquid capacity element 8 includes an energy storage container 14 with a cavity, a diaphragm 15 and a charging and discharging unit 16. The energy storage container 14 includes a hydraulic port 17 and an air port 18. The charging and discharging unit 16 is arranged on the air port 18. The hydraulic port 17 is used to communicate with the intermediate connector 1. The diaphragm 15 is arranged between the air port 18 and the hydraulic port 17.

[0034] In the embodiment, the liquid container element 8 adopts an energy storage container 14 with a cavity, a diaphragm 15 is arranged inside, the diaphragm 15 divides the cavity of the energy storage container 14 into two parts, one end is provided with a gas port 18, a charging and discharging unit 16 is arranged on the gas port 18, the charging and discharging unit 16 adjusts the pressure of the liquid container by adjusting the gas volume on one side of the diaphragm 15, the other end of the diaphragm 15 is a hydraulic port 17 connected with the intermediate connecting body 1 to access the hydraulic system, under the elastic action of the diaphragm 15, the hydraulic medium can be buffered to eliminate vibration.

[0035] The combined hydraulic vibration damper in the above embodiment has simple structure, can be installed at the positions of the oil inlet pipe, the oil return pipe and the bypass oil pipe as required, the installation type, the installation sequence and the connection mode of the combined hydraulic vibration damper can be adaptively selected according to the actual situation, and it is favorable to adjust, reduce or eliminate the vibration of the hydraulic system as the design guide.

[0036] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A combined hydraulic damper, characterized in that The damper comprises an intermediate connector (1) and at least two impedance elements, wherein the intermediate connector (1) is provided with an inlet (2) and an outlet (3), and the at least two impedance elements are arranged on the intermediate connector (1) in a direction from the inlet (2) to the outlet (3).

2. The combined hydraulic damper according to claim 1, characterized in that The at least two impedance elements are arranged in parallel or in series on the intermediate connector (1) in a direction from the inlet (2) to the outlet (3).

3. The combined hydraulic damper according to claim 2, characterized in that The impedance elements comprise at least two of a liquid resistance element (6), a liquid sensing element (7) and a liquid capacity element (8).

4. The combined hydraulic damper according to claim 3, characterized in that The liquid resistance element (6) comprises a first connecting channel (9), a second connecting channel (10) and a liquid resistance channel (11), wherein the liquid resistance channel (11) is arranged between the first connecting channel (9) and the second connecting channel (10), and the diameter of the liquid resistance channel (11) is smaller than the diameters of the first connecting channel (9) and the second connecting channel (10).

5. The combined hydraulic damper according to claim 3, characterized in that The liquid sensing element (7) comprises an energy storage channel (12) and an external force source (13), one end of the energy storage channel (12) is in communication with the intermediate connector (1), and the other end is in communication with the external force source (13).

6. The combined hydraulic damper according to claim 3, characterized in that The liquid capacity element (8) comprises an energy storage container (14) having a cavity, a diaphragm (15) and an air charging and discharging unit (16), the energy storage container (14) comprises a hydraulic port (17) and an air port (18), wherein the air charging and discharging unit (16) is arranged on the air port (18), the hydraulic port (17) is used to communicate with the intermediate connector (1), and the diaphragm (15) is arranged between the air port (18) and the hydraulic port (17).

Images