Hydraulic device with energy recovery for servo variable pump

Abstract

The utility model provides: a kind of servo variable pump hydraulic device with energy recovery, comprising: servo assembly, hydraulic assembly and recovery component, servo assembly and hydraulic assembly are installed in the upper side surface of transmission box, the outside surface of hydraulic assembly is equipped with recovery component for energy recovery, servo assembly includes bearing seat one and servo motor, the upper side surface of transmission box is equipped with servo motor by bearing seat one, compared with prior art, the utility model has the beneficial effects as follows: by setting recovery component, in use, the redundant energy generated in the operation process of hydraulic component, such as execution element brake, idle return etc. Condition is efficiently recovered, converted into electric energy or hydraulic energy and stored in energy accumulator element, release and utilize when the device needs, to significantly reduce system energy consumption.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic equipment, and specifically relates to a servo variable pump hydraulic device with energy recovery. Background Technology

[0002] A servo variable pump hydraulic system is a system that uses a servo motor to drive a variable pump as its core, transmitting power through hydraulic oil and achieving precise control. Currently, servo variable pump hydraulic systems have some areas for optimization. Under certain operating conditions, excess hydraulic oil needs to overflow back to the oil tank via high-pressure overflow. Even the variable pump itself, due to its lubrication needs, will overflow by about 5% of its nominal flow rate. This leads to significant energy waste and a substantial reduction in motor efficiency; statistics show that energy losses due to high-pressure overflow can reach 30%-80%. This is mainly because the system struggles to accurately match the flow rate and pressure required by the load. When the load's flow rate requirement is low, the excess flow output by the pump can only overflow. A conventional solution is to use a proportional throttle valve as the speed control circuit; however, this introduces throttling losses. While closed-loop variable pumps eliminate overflow and throttling losses, they control the swashplate piston through a proportional pressure reducing valve or a proportional servo valve, keeping the swashplate at a certain opening. When the pump output pressure reaches a predetermined value, it switches to pressure control mode. This method increases system complexity and cost. Therefore, a new structure is needed to address the aforementioned technical problems. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a servo variable pump hydraulic device with energy recovery, so as to solve the problems mentioned in the background technology.

[0004] This utility model is achieved through the following technical solution: a servo variable pump hydraulic device with energy recovery, comprising: a servo component, a hydraulic component, and a recovery component. The servo component and the hydraulic component are mounted on the upper surface of a transmission box. An energy recovery component is mounted on the outer surface of the hydraulic component. The servo component includes a bearing housing and a servo motor. The servo motor is mounted on the upper surface of the transmission box via the bearing housing. The hydraulic component includes a bearing housing and a hydraulic component. The hydraulic component is mounted on the upper surface of the transmission box via the bearing housing.

[0005] In a preferred embodiment, a base plate is sealed and installed on the lower surface of the transmission box. The transmission box has a cuboid structure. A bearing seat is installed on the right edge of the upper surface of the transmission box. A transmission component for rotatably connecting the servo component and the hydraulic component is installed inside the transmission box.

[0006] In a preferred embodiment, a bearing housing two is installed on the left edge of the upper surface of the transmission box, and a servo motor is installed at the center of the upper surface of the bearing housing one. A power interface for connecting to an external power source is installed on the outer surface of the servo motor. In use, by installing the servo component and the hydraulic component on the upper surface of the transmission box, the power transmission path can be optimized and integrated. The servo component precisely controls the output flow and pressure of the pump, and the hydraulic component efficiently completes energy conversion and transmission.

[0007] In a preferred embodiment, a hydraulic component is installed at the center of the upper surface of the bearing housing two, and a push rod is installed at the center of the upper surface of the hydraulic component. The recovery assembly includes an accumulator, a motor, a recovery pipe one, and a recovery pipe two.

[0008] In a preferred embodiment, an accumulator is mounted on the outer surface of the hydraulic component, a motor is mounted on the outer surface of the accumulator, and two recovery pipes are symmetrically mounted on the upper surface of the accumulator. The end of the recovery pipe away from the accumulator is connected to the upper edge of the outer surface of the hydraulic component.

[0009] In a preferred embodiment, a second recovery pipe is installed on the lower surface of the accumulator. The diameter of the second recovery pipe is larger than that of the first recovery pipe. A sensor is installed on the outer surface of the second recovery pipe. The recovery component is electrically connected to the servo component via a wire. During use, it can efficiently recover excess energy (such as hydraulic energy converted from kinetic energy and potential energy) generated during the operation of hydraulic components, such as braking of actuators and no-load return stroke, and convert it into electrical energy or hydraulic energy and store it in the accumulator component. It can be released and utilized when the device needs it, thereby significantly reducing system energy consumption.

[0010] After adopting the above technical solution, the beneficial effects of this utility model are as follows: 1. By setting up a recovery component, the outer surface of the pressure component is equipped with a recovery component for energy recovery. During use, the excess energy (such as hydraulic energy converted from kinetic energy and potential energy) generated during the operation of hydraulic components, such as braking of actuators and no-load return stroke, can be efficiently recovered and converted into electrical energy or hydraulic energy and stored in the accumulator element. When the device needs it, it can be released and utilized, thereby significantly reducing the system energy consumption.

[0011] 2. By setting up servo components and hydraulic components, which are installed on the upper surface of the transmission box, the power transmission path can be optimized and integrated during use. The servo components precisely control the pump's output flow and pressure, while the hydraulic components efficiently complete energy conversion and transmission. The compact layout of both components in the transmission box reduces the length of connecting pipes and energy loss. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of a servo variable pump hydraulic device with energy recovery according to this utility model.

[0014] Figure 2 This is a schematic diagram of the transmission box of a servo variable pump hydraulic device with energy recovery according to this utility model.

[0015] Figure 3 This is a schematic diagram of the recovery component of a servo variable pump hydraulic device with energy recovery according to the present invention.

[0016] In the diagram, 100 represents the transmission box, and 110 represents the base plate.

[0017] 200 - Bearing housing 1, 210 - Servo motor, 220 - Power interface;

[0018] 300-Bearing housing II, 310-Hydraulic components, 320-Push rod;

[0019] 400 - Energy accumulator, 410 - Recovery tube one, 420 - Motor, 430 - Recovery tube two, 440 - Sensor. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 3As the first embodiment of this utility model: a servo variable pump hydraulic device with energy recovery, including: a servo component, a hydraulic component and a recovery component, the servo component and the hydraulic component are mounted on the upper surface of the transmission box 100, the outer surface of the hydraulic component is mounted with a recovery component for energy recovery, the servo component includes a bearing seat 200 and a servo motor 210, the upper surface of the transmission box 100 is mounted with the servo motor 210 through the bearing seat 200, the hydraulic component includes a bearing seat 300 and a hydraulic component 310, the upper surface of the transmission box 100 is mounted with the hydraulic component 310 through the bearing seat 300;

[0022] A base plate 110 is sealed and installed on the lower surface of the transmission box 100. The transmission box 100 has a cuboid structure. A bearing seat 200 is installed on the right edge of the upper surface of the transmission box 100. A transmission component for rotatingly connecting the servo component and the hydraulic component is installed inside the transmission box 100.

[0023] A bearing housing 200 is installed on the left edge of the upper surface of the transmission box 100. A servo motor 210 is installed at the center of the upper surface of the bearing housing 200. A power interface 220 for connecting to an external power source is installed on the outer surface of the servo motor 210.

[0024] A hydraulic component 310 is installed at the center of the upper surface of the bearing housing 300, and a push rod 320 is installed at the center of the upper surface of the hydraulic component 310. The recovery assembly includes an accumulator 400, a motor 420, a recovery pipe 410, and a recovery pipe 430.

[0025] When the device is in use, the servo motor 210 mounted on the bearing seat 200 on the upper surface of the transmission box 100 will start, driving the transmission components inside the transmission box 100 to move. This, in turn, drives the hydraulic component 310 through the bearing seat 300 to move (the hydraulic component 310, transmission components, and servo motor 210 are all existing technologies; their models can be selected from currently available, technologically mature equipment. Their specific working principles, connection principles, and specific structures are not detailed here). When the hydraulic component 310 moves, the upper surface of the hydraulic component 310... The push rod 320 will move to meet the user's needs. When the hydraulic component 310 moves through the servo motor 210, the recovery component on its outer surface will recover and utilize the kinetic energy of the hydraulic component 310, making it convenient for the user. During use, by installing the servo component and the hydraulic component on the upper surface of the transmission box 100, the power transmission path can be optimized and integrated. The servo component precisely controls the pump's output flow and pressure, and the hydraulic component efficiently completes energy conversion and transmission. The two are compactly arranged in the transmission box 100, reducing the length of the connecting pipes and energy loss.

[0026] Please see Figures 1 to 3 As a second embodiment of the present invention: based on the description in the above embodiments, further, an accumulator 400 is installed on the outer surface of the hydraulic component 310, a motor 420 is installed on the outer surface of the accumulator 400, and two recovery pipes 410 are symmetrically installed on the upper surface of the accumulator 400. The end of the recovery pipe 410 away from the accumulator 400 is connected to the upper edge of the outer surface of the hydraulic component 310.

[0027] A recovery tube 430 is installed on the lower surface of the accumulator 400. The diameter of the recovery tube 430 is larger than that of the accumulator 430. A sensor 440 is installed on the outer surface of the recovery tube 430. The recovery assembly is electrically connected to the servo assembly through a wire.

[0028] When the device operates according to the steps of the first embodiment, the push rod 320 inside the hydraulic component 310 moves, generating hydraulic energy converted from kinetic and potential energy. This hydraulic energy enters the accumulator 400 through the recovery pipe 410 and is then recovered by the motor 420 on the outer surface of the accumulator 400. This allows the accumulator 400 to recover the kinetic energy generated by the hydraulic component 310. The recovery pipe 430 then transfers the hydraulic oil back to the hydraulic component 310 for reuse. During operation, the excess energy (such as hydraulic energy converted from kinetic and potential energy) generated by the hydraulic component 310 during operation, such as braking of the actuator (hydraulic component) or no-load return, can be efficiently recovered and converted into electrical or hydraulic energy stored in the accumulator 400. This energy is then released and utilized when needed by the device, thereby significantly reducing system energy consumption.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A servo variable pump hydraulic device with energy recovery, comprising: A servo component, a hydraulic component, and a recovery component are characterized in that the servo component and the hydraulic component are mounted on the upper surface of a transmission box (100), and a recovery component for energy recovery is mounted on the outer surface of the hydraulic component. The servo component includes a bearing housing (200) and a servo motor (210), and the servo motor (210) is mounted on the upper surface of the transmission box (100) via the bearing housing (200). The hydraulic component includes a bearing housing (300) and a hydraulic component (310), and the hydraulic component (310) is mounted on the upper surface of the transmission box (100) via the bearing housing (300).

2. The servo variable pump hydraulic device with energy recovery as described in claim 1, characterized in that: The lower surface of the transmission box (100) is sealed with a base plate. The transmission box (100) has a cuboid structure. A bearing seat (200) is installed on the right edge of the upper surface of the transmission box (100). The transmission box (100) is equipped with a transmission component for rotatingly connecting the servo component and the hydraulic component.

3. The servo variable pump hydraulic device with energy recovery as described in claim 2, characterized in that: A bearing housing 2 (300) is installed on the left edge of the upper surface of the transmission box (100). A servo motor (210) is installed at the center of the upper surface of the bearing housing 1 (200). A power interface (220) for connecting to an external power source is installed on the outer surface of the servo motor (210).

4. The servo variable pump hydraulic device with energy recovery as described in claim 3, characterized in that: A hydraulic component (310) is installed at the center of the upper surface of the bearing housing 2 (300), and a push rod (320) is installed at the center of the upper surface of the hydraulic component (310). The recovery assembly includes an accumulator (400), a motor (420), a recovery pipe 1 (410), and a recovery pipe 2 (430).

5. A servo variable pump hydraulic device with energy recovery as described in claim 4, characterized in that: An accumulator (400) is mounted on the outer surface of the hydraulic component (310), and a motor (420) is mounted on the outer surface of the accumulator (400). Two recovery pipes (410) are symmetrically mounted on the upper surface of the accumulator (400). The end of the recovery pipe (410) away from the accumulator (400) is connected to the upper edge of the outer surface of the hydraulic component (310).

6. The servo variable pump hydraulic device with energy recovery as described in claim 5, characterized in that: A second recovery tube (430) is installed on the lower surface of the accumulator (400). The diameter of the second recovery tube (430) is larger than the diameter of the second recovery tube (430). A sensor (440) is installed on the outer surface of the second recovery tube (430). The recovery assembly is electrically connected to the servo assembly through a wire.

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