Integrated electric hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic cylinders, in particular to an integrated electric hydraulic oil cylinder which comprises a cylinder barrel and a piston rod, a piston is arranged at one end of the piston rod, the piston is arranged in the cylinder barrel, and the cylinder barrel is divided into a rod cavity and a rodless cavity; one end of the cylinder barrel is provided with an end cover, and the other end is provided with a base; a communicating pipe is arranged outside the rod cavity and the base, and an oil way connected with the communicating pipe and the rodless cavity is arranged in the base. The connecting pipe is arranged outside the oil cylinder, the rod cavity and the rodless cavity are communicated, internal circulation of the hydraulic oil cylinder is achieved, and pollution and loss of hydraulic oil are effectively avoided; the electronic oil pump and the electromagnetic directional valve are integrated in the base, so that adjustment of different use states of the hydraulic oil cylinder is achieved. The hydraulic oil cylinder is integrally arranged, simple in structure, small in occupied space, sensitive in response and easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to an integrated electric hydraulic cylinder. Background Technology

[0002] Hydraulic cylinders are hydraulic actuators that convert hydraulic energy into mechanical energy and perform linear reciprocating motion (or oscillating motion). They are widely used in the hydraulic systems of various machines.

[0003] Hydraulic cylinders require connection to external hydraulic circuits during operation. As the hydraulic fluid flows through these pipes, pressure losses occur due to friction and local resistance, reducing system efficiency. The length and layout of the hydraulic lines affect fluid transmission time, especially in long-distance or complex systems, where delays can slow the cylinder's response. External hydraulic circuits increase system complexity, making installation and maintenance more difficult. Leakage risks exist at pipe connections, requiring regular inspection and maintenance. Furthermore, the space occupied by pipes and connectors can be a problem in space-constrained applications. Utility Model Content

[0004] Technical objective: In order to overcome the shortcomings of the existing technology, this utility model provides an integrated electric hydraulic cylinder with integrated design, simple structure, and reduced hydraulic oil pollution and consumption.

[0005] Technical solution: To achieve the above objectives, this utility model discloses an integrated electric hydraulic cylinder, including a cylinder barrel and a piston rod. A piston is provided at one end of the piston rod, and the piston is disposed inside the cylinder barrel, dividing the cylinder barrel into a rod chamber and a rodless chamber.

[0006] The cylinder is provided with an end cap at one end and a base at the other end; a connecting pipe is provided outside the rod chamber and the base, and an oil passage is provided inside the base to connect the connecting pipe and the rodless chamber.

[0007] Furthermore, an electronic oil pump is installed in the oil circuit, and an electromagnetic directional valve is connected to the electronic oil pump.

[0008] Furthermore, a connecting ring is provided at the other end of the piston rod.

[0009] Furthermore, the base is mounted on the pedestal, which is used to fix the hydraulic cylinder.

[0010] Furthermore, the end cap is provided with oil holes and air holes.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model's integrated electric hydraulic cylinder connects the rod-side and rodless-side chambers via a connecting pipe outside the cylinder, enabling internal circulation of the hydraulic oil and effectively preventing hydraulic oil contamination and loss. By integrating an electronic oil pump and a solenoid directional valve into the base, the hydraulic cylinder can be adjusted for different operating conditions. This integrated hydraulic cylinder design features a simple structure, small footprint, sensitive response, and ease of maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the hydraulic cylinder of this utility model;

[0014] Figure 2 This is a cross-sectional view of the overall structure of the hydraulic cylinder of this utility model;

[0015] In the diagram, 10 is the cylinder; 11 is the rod chamber; 12 is the rodless chamber; 20 is the piston rod; 21 is the piston; 22 is the connecting ring; 30 is the end cap; 31 is the oil hole; 32 is the air hole; 40 is the base; 41 is the oil passage; 50 is the connecting pipe; 60 is the electronic oil pump; 70 is the solenoid directional valve; and 80 is the base. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1 To be continued Figure 2 The principles and features of this utility model are described, and the examples given are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0017] An integrated electric hydraulic cylinder includes a cylinder barrel 10, a piston rod 20, an end cap 30, a base 40, a connecting pipe 50, an electronic oil pump 60, and an electromagnetic directional valve 70.

[0018] One end of the cylinder 10 is provided with an end cap 30, and the other end is provided with a base 40. The end cap 30 is provided with a hole for the piston rod 20 to pass through. The end cap 30 is also provided with an oil hole 31 and an air hole 32 for replenishing hydraulic oil and releasing gas. The base 40 is fixedly mounted on a base 80, which can fix the cylinder on the required equipment.

[0019] A piston 21 is attached to one end of the piston rod 20, and a connecting ring 22 is attached to the other end for connection with external equipment. The piston 21 is located inside the cylinder 10, dividing the cylinder 10 into a rod chamber 11 and a rodless chamber 12. A connecting pipe 50 is provided between the rod chamber 11 and the outside of the base 40. An oil passage 41 is provided inside the base 40, connecting the connecting pipe 50 and the rodless chamber 12. An electronic oil pump 60 is installed on the oil passage 41, and a solenoid directional valve 70 is connected to the electronic oil pump 60. The solenoid directional valve 70 can be a three-position four-way directional valve. Thus, hydraulic oil is circulated in the rod chamber 11 and the rodless chamber 12 through the oil passage 41 and the connecting pipe 50, and the electronic oil pump 60 and the solenoid directional valve 70 are used to adjust the hydraulic cylinder for different operating states.

[0020] The working process of the integrated electric hydraulic cylinder of this utility model is as follows:

[0021] When lifting is required, the electronic oil pump 60 starts, the valve core of the solenoid directional valve 70 moves, the valve opens, and the rod chamber 11 and the rodless chamber 12 are connected. Under the action of the electronic oil pump 60, hydraulic oil flows from the rod chamber 11 through the connecting pipe 50 and the oil passage 41 to the rodless chamber 12, pushing the piston rod 20 to move out of the cylinder 10, thus achieving lifting. When it is necessary for the piston rod 20 to stop moving and maintain a certain position, the electronic oil pump 60 is turned off, the valve core of the solenoid directional valve 70 moves, the valve closes, and no hydraulic oil flows into the rod chamber 11 and the rodless chamber 12, causing the piston rod 20 to stop moving and maintain a certain position. When it is necessary for the piston rod 20 to retract, the valve core of the solenoid directional valve 70 moves, the valve opens, and the rod chamber 11 and the rodless chamber 12 are connected. Under the action of the electronic oil pump 60, hydraulic oil flows from the rodless chamber 12 through the oil passage 41 and the connecting pipe 50 to the rod chamber 11, causing the piston rod 20 to continuously retract until it returns to its original position.

[0022] 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. An integrated electric hydraulic cylinder, characterized in that, It includes a cylinder (10) and a piston rod (20), one end of which is provided with a piston (21), which is disposed inside the cylinder (10) and divides the cylinder (10) into a rod chamber (11) and a rodless chamber (12); The cylinder (10) is provided with an end cap (30) at one end and a base (40) at the other end; a connecting pipe (50) is provided outside the rod chamber (11) and the base (40), and an oil passage (41) connecting the connecting pipe (50) and the rodless chamber (12) is provided inside the base (40).

2. The integrated electric hydraulic cylinder according to claim 1, characterized in that, An electronic oil pump (60) is installed on the oil circuit (41), and an electromagnetic directional valve (70) is connected to the electronic oil pump (60).

3. The integrated electric hydraulic cylinder according to claim 1, characterized in that, A connecting ring (22) is provided at the other end of the piston rod (20).

4. The integrated electric hydraulic cylinder according to claim 1, characterized in that, The base (40) is disposed on the base (80), which is used to fix the oil cylinder.

5. The integrated electric hydraulic cylinder according to claim 1, characterized in that, The end cap (30) is provided with an oil hole (31) and an air hole (32).

Images