Double-acting electro-hydraulic push rod mechanism driven by hydraulic oil bag

Abstract

The utility model belongs to the technical field of hydraulic push rods, and discloses a hydraulic oil bag driven double-acting electric hydraulic push rod mechanism which comprises a valve seat, a motor is installed on the valve seat, a plurality of valve holes are formed in the valve seat, and each valve hole is correspondingly communicated with a one-way valve, a manual pressure release valve, an exhaust hole, an overflow valve, an upper branch pipe and a lower branch pipe. The output end of the motor is connected with a hydraulic pump, the hydraulic pump is provided with a plurality of via holes corresponding to the valve holes in position, and the valve seat is provided with an oil bag and an oil tank. According to the double-acting hydraulic oil tank, the double-acting design is adopted, balanced pushing force and pulling force can be provided in different directions, the double-acting hydraulic oil tank is suitable for more application scenes, due to the innovative oil bag design, the oil tank is more compact, the total weight is reduced, and the durability and flexibility of the whole system are improved. The oil bag is made of a high-strength elastic material, hydraulic fluctuation can be effectively absorbed, and fluid stability is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic push rod technology, specifically relating to a hydraulic oil bladder driven double-acting electro-hydraulic push rod mechanism. Background Technology

[0002] Hydraulic actuators, as highly efficient power actuators, are widely used in robotic arms, industrial automation, and construction machinery. Their core function is to convert hydraulic energy into mechanical energy for linear reciprocating motion or angular rotation. However, traditional hydraulic actuator technology still has the following limitations in practical applications:

[0003] Traditional hydraulic actuators typically require an external hydraulic pump station or complex piping system for power, resulting in bulky equipment, high installation and maintenance costs, and limited flexibility in space-constrained environments. Existing bidirectional telescopic hydraulic actuators often employ multi-stage directional valves to control oil circuit switching; however, valve response delays and oil backflow can cause thrust fluctuations, affecting motion accuracy. Furthermore, while redundant designs of traditional hydraulic locks and relief valves improve safety, they also increase system complexity and energy loss. Most hydraulic actuators feature separate drive units and actuators, leading to long transmission chains and significant energy losses. For example, some patents achieve push-pull movements using separate hydraulic pumps and cylinders, but miniaturization and rapid response are difficult to achieve.

[0004] Based on this, this patent proposes a hydraulic bladder-driven double-acting electro-hydraulic push rod mechanism, which solves the problems of large size, low efficiency and difficult maintenance in traditional technologies, and provides an innovative solution for compact high-precision hydraulic actuators. Utility Model Content

[0005] In view of the problems mentioned above in the background technology, the purpose of this utility model is to provide a hydraulic oil bladder driven double-acting electro-hydraulic push rod mechanism.

[0006] To achieve the above technical objectives, the technical solution adopted by this utility model is as follows:

[0007] A hydraulic bladder-driven double-acting electro-hydraulic push rod mechanism includes a valve seat, on which a motor is mounted, and the valve seat is provided with a plurality of valve holes, each of which is connected to a check valve, a manual pressure relief valve, an exhaust port, an overflow valve, an upper branch pipe, and a lower branch pipe.

[0008] The motor output end is connected to a hydraulic pump. The hydraulic pump has several through holes corresponding to the valve holes. The valve seat is equipped with an oil bladder and an oil tank. The hydraulic pump is located inside the oil bladder, and the oil tank is located outside the oil bladder.

[0009] The upper branch pipe output end and the lower branch pipe output end are connected together to a hydraulic push rod. The upper branch pipe output end is located at the upper end of the hydraulic push rod, and the lower branch pipe output end is located at the lower end of the hydraulic push rod.

[0010] Furthermore, the valve seat is rectangular, and a connecting seat connects the valve seat to the upper branch pipe and the lower branch pipe. This design strengthens the structural strength between the valve seat and the hydraulic push rod, while protecting the connection ends of the upper and lower branch pipes and ensuring sealing.

[0011] Furthermore, there are two check valves. This design ensures that one valve is responsible for the oil inlet circuit and the other for the oil outlet circuit, controlling the flow direction of the oil, preventing oil backflow, and ensuring that the hydraulic push rod can work stably and reliably.

[0012] Furthermore, there are two overflow valves. In this design, one overflow valve is installed in the oil inlet circuit to serve as a constant pressure overflow and pressure stabilization valve, while the other overflow valve is installed in the oil outlet circuit to serve as a safety protection and system unloading valve.

[0013] Furthermore, the oil tank is equipped with air vents, a design that allows for air intake and release during the expansion and contraction of the oil bladder.

[0014] The beneficial effects of using this utility model are as follows:

[0015] This invention employs a dual-acting design, providing balanced thrust and pull in different directions to adapt to a wider range of applications. The innovative oil bladder design makes the oil tank more compact, reducing overall weight and improving the durability and flexibility of the entire system. The oil bladder is made of high-strength elastic material, effectively absorbing hydraulic fluctuations and ensuring fluid stability.

[0016] This utility model is equipped with a manual pressure relief function, which enables operators to easily and safely release the pressure in the system in emergency situations, meeting the high safety requirements in industrial applications;

[0017] This utility model is a double-acting hydraulic push rod based on an oil bladder design, which provides strong hydraulic power in lifting, supporting, folding and lifting mechanisms and pile foundation construction.

[0018] This utility model has a compact structure, fast response, low cost, and is easy to replace and maintain. Attached Figure Description

[0019] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0020] Figure 1 This is a schematic diagram of an embodiment of a hydraulic bladder-driven double-acting electro-hydraulic push rod mechanism according to this utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of an embodiment of a hydraulic bladder-driven double-acting electro-hydraulic push rod mechanism according to this utility model. Figure 2 ;

[0022] Figure 3 This is a cross-sectional structural schematic diagram of an embodiment of a hydraulic bladder driven double-acting electro-hydraulic push rod mechanism of the present invention;

[0023] The symbols for the main components are explained below:

[0024] Valve seat 1; motor 2; valve hole 3; check valve 4; manual pressure relief valve 5; vent 6; overflow valve 7; upper branch pipe 8; lower branch pipe 9; hydraulic pump 10; through hole 11; oil bladder 12; oil tank 13; hydraulic push rod 14; connecting seat 15; air hole 16. Detailed Implementation

[0025] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] like Figure 1 , Figure 2 , Figure 3 As shown, the present invention provides a hydraulic oil bladder driven double-acting electro-hydraulic push rod mechanism, including a valve seat 1, a motor 2 mounted on the valve seat 1, and a plurality of valve holes 3, each valve hole 3 being connected to a check valve 4, a manual pressure relief valve 5, an exhaust hole 6, an overflow valve 7, an upper branch pipe 8, and a lower branch pipe 9.

[0027] The output end of the motor 2 is connected to a hydraulic pump 10. The hydraulic pump 10 is provided with several through holes 11 corresponding to the valve holes 3. The valve seat 1 is equipped with an oil bladder 12 and an oil tank 13. The hydraulic pump 10 is located inside the oil bladder 12, and the oil tank 13 is located outside the oil bladder 12.

[0028] The output ends of the upper branch pipe 8 and the lower branch pipe 9 are connected to a hydraulic push rod 14. The output end of the upper branch pipe 8 is located at the upper end of the hydraulic push rod 14, and the output end of the lower branch pipe 9 is located at the lower end of the hydraulic push rod 14.

[0029] In this implementation case, when using a hydraulic bladder-driven double-acting electro-hydraulic push rod mechanism, the operation of the motor 2, in conjunction with the rotation of the hydraulic pump, achieves the dual-acting drive of hydraulic pressure and motor power on the hydraulic push rod 14.

[0030] When the hydraulic push rod 14 extends forward, the motor 2 rotates forward, driving the hydraulic pump 10 to rotate and pumping the oil in the oil bladder 12 into the lower branch pipe 9. The upper branch pipe 8 is responsible for returning oil into the oil bladder 12 to maintain balance. Under the action of oil pressure, the hydraulic push rod 14 extends forward. Conversely, when the hydraulic push rod retracts backward, the motor 2 reverses, pumping the oil in the oil bladder 12 into the upper branch pipe 8. The lower branch pipe 9 is responsible for returning oil into the oil bladder 12 to maintain balance. Under the action of oil pressure, the hydraulic push rod 14 retracts backward.

[0031] Preferably, the valve seat 1 is rectangular, and a connecting seat 15 is provided between the valve seat 1 and the upper branch pipe 8 and the lower branch pipe 9. With this design, the connecting seat 15 strengthens the structural strength between the valve seat 1 and the hydraulic push rod 14, and at the same time protects the connection end of the upper branch pipe 8 and the lower branch pipe 9 to ensure sealing. In fact, the external structure of the valve seat 1 and the connection structure between it and the hydraulic push rod 14 can also be considered according to the specific situation.

[0032] Ideally, there should be two check valves 4. With this design, one is responsible for the oil inlet circuit and the other for the oil outlet circuit. This controls the direction of oil flow, prevents oil backflow, and ensures that the hydraulic push rod can work stably and reliably. In practice, the positions of the two check valves 4 can also be considered according to specific circumstances.

[0033] Ideally, there are two relief valves 7. In this design, one relief valve 7 is installed in the oil inlet circuit to play the role of constant pressure relief and pressure stabilization, while the other relief valve 7 is installed in the oil outlet circuit to play the role of safety protection and system unloading. In practice, the positions of the two relief valves 7 can also be considered according to specific circumstances.

[0034] The preferred oil tank 13 is equipped with an air hole 16. This design is used to draw in and release air when the oil bladder 12 expands and contracts. In fact, the position and size of the air hole 16 can also be considered according to specific circumstances.

[0035] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A hydraulic oil bag driven double acting electro-hydraulic push rod mechanism comprising a valve seat (1), characterized in that: The valve seat (1) is provided with a motor (2), the valve seat (1) is provided with a plurality of valve holes (3), each valve hole (3) is correspondingly connected with a one-way valve (4), a manual pressure relief valve (5), an exhaust hole (6), an overflow valve (7), an upper branch pipe (8) and a lower branch pipe (9); The output end of the motor (2) is connected with a hydraulic pump (10), the hydraulic pump (10) is provided with a plurality of through holes (11) corresponding to the valve holes (3), the valve seat (1) is provided with an oil bag (12) and an oil tank (13), the hydraulic pump (10) is located in the oil bag (12), and the oil tank (13) is located outside the oil bag (12); The output end of the upper branch pipe (8) and the output end of the lower branch pipe (9) are connected with a hydraulic push rod (14) together, the output end of the upper branch pipe (8) is located at the upper end of the hydraulic push rod (14), and the output end of the lower branch pipe (9) is located at the lower end of the hydraulic push rod (14).

2. A hydraulic bladder actuated double acting electro-hydraulic push rod mechanism according to claim 1, wherein: The valve seat (1) is rectangular, and the valve seat (1) is connected with the upper branch pipe (8) and the lower branch pipe (9) through a connecting seat (15).

3. A hydraulic bladder actuated double acting electro-hydraulic push rod mechanism according to claim 2, wherein: The one-way valve (4) has two.

4. A hydraulic bladder actuated double acting electro-hydraulic push rod mechanism according to claim 3, wherein: The overflow valve (7) has two.

5. A hydraulic bladder actuated double acting electro-hydraulic push rod mechanism according to claim 4, wherein: The oil tank (13) is provided with an air hole (16).

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