CN205173110U - Double -cylinder hydraulic pressure loading device - Google Patents

Abstract

The utility model discloses a double-cylinder hydraulic loading device. A piston head and a piston tail are respectively installed at two ends of a piston rod. The piston head and the piston tail are respectively placed in two oil cylinders, and the two oil cylinders are coaxially connected. The two ends of the oil cylinder are respectively provided with oil inlet and outlet ports on both sides of the piston head and piston tail. The single piston multi-cavity design, the double cylinder linkage provides loading pressure, which makes the power large and the efficiency high; the independent oil chamber design in the middle can be Isolate the two oil cylinders to avoid leakage of liquid into the two oil cylinders, and strengthen the sealing effect; the overall structure of the device is compact and ingenious, the loading speed is controllable, and the noise is low.

Description

A double-cylinder hydraulic loading device

technical field

The utility model belongs to the technical field of hydraulic pumps for storage, and in particular relates to a double-cylinder hydraulic loading device.

Background technique

A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy to achieve linear reciprocating motion (or swing motion). The hydraulic cylinder has simple structure, reliable operation, and high power density. Compared with the transmission mode of motor + reducer (screw), when realizing linear reciprocating motion, the reduction device is eliminated, there is no transmission gap, the low-speed movement is stable, and the speed adjustment is convenient. Therefore, it is widely used in construction machinery, lifting equipment, metallurgical machinery, agricultural machinery, vehicle engineering and weaponry and other fields. In the power machinery test, the axial load is applied to the transmission shaft of the power equipment, and the hydraulic loading method is generally used, and the hydraulic cylinder used is a single hydraulic cylinder loading method.

In the Chinese patent database, the patent publication number CN103089563A discloses "a double-cylinder hydraulic pump", including a hydraulic cylinder and two piston cylinders, the hydraulic cylinder and the piston cylinder are relatively fixed, and the piston rods of the two piston cylinders are the same. Shaft connection, the piston cylinder is provided with a grouting port and a grouting port communicating with the inner cavity of the piston cylinder; the piston rod of the hydraulic cylinder is parallel to the piston of the piston cylinder, and the piston rod of the hydraulic cylinder is parallel to the piston rod of the piston cylinder. The piston rod is fixedly connected by a power connecting rod.

The double-cylinder hydraulic pump with the above structure can increase the grouting pressure and improve work efficiency. However, although the double-cylinder hydraulic pump with this structure is provided with two sets of grouting ports and grouting ports, during work, the grouting on one side At the same time, another time of grouting, the grouting port providing power can only be the grouting port on one side, which fails to improve the grouting pressure qualitatively, and the work efficiency is still limited.

Utility model content

The utility model provides a double-cylinder hydraulic loading device. When the oil cylinders are loaded in two directions, the two cylinders are linked to provide loading pressure in both oil cylinders to realize high-efficiency loading.

In the double-cylinder hydraulic loading device of the utility model, the two ends of the piston rod are respectively equipped with a piston head and a piston tail. The piston head and the piston tail are respectively placed in two oil cylinders, and the two oil cylinders are connected coaxially. Both sides of the head and the piston tail are respectively provided with oil cylinder inlet and outlet ports.

As a further perfect design, the two oil cylinders are connected through the oil cylinder connecting plate, and form an independent space with the two oil cylinders. The common cavity added in the middle is a common leakage cavity for oil and water, which is used to isolate the loading liquid in the two oil cylinders. When the two oil cylinders are filled with different loading liquids (such as oil and water), it can avoid oil leakage. Mixed with water, resulting in sealing difficulties.

Oil cylinder inlet and outlet ports are arranged on the oil cylinder connecting plate. Leaked liquid can be exported to ensure normal operation.

The piston head is installed on one end of the piston rod through the piston fixing nut, and the piston head is placed in the oil cylinder Ⅰ.

Oil cylinder I is composed of oil cylinder barrel I, oil cylinder end cover I installed on both sides of oil cylinder barrel I and intermediate connecting plate.

The piston tail is placed in the oil cylinder II, and the oil cylinder II is composed of the oil cylinder barrel II, the oil cylinder end cover II installed on both sides of the oil cylinder barrel II and the installation base.

The connecting rod connects the cylinder barrel Ⅰ, the installation base and the cylinder end cover Ⅱ. The positioning of the two oil cylinders is realized through the oil cylinder connecting plate and connecting rod to prevent axial movement.

The dual-cylinder hydraulic loading device of the present invention is designed with single piston and multi-cavity, and the linkage of the two cylinders provides loading pressure, so that the power is high and the efficiency is high; the design of the independent oil chamber in the middle can isolate the two oil cylinders and prevent the leakage of liquid from entering the two oil cylinders , Strengthen the sealing effect; the overall structure of the device is compact and ingenious, the loading speed is controllable, and the noise is low.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of a double-cylinder hydraulic loading device of the present invention.

In the figure: 1. Oil cylinder end cover Ⅰ, 2. Oil cylinder inlet and outlet port Ⅰ, 3. Piston fixing nut, 4. Piston head, 5. Piston rod, 6. Oil cylinder barrel Ⅰ, 7. Oil cylinder inlet and outlet port Ⅱ, 8. Middle mounting plate, 9. Oil cylinder connecting plate , 10 Oil cylinder inlet and outlet III, 11 Oil cylinder inlet and outlet IV, 12 Mounting base, 13 Piston tail, 14 Oil cylinder barrel II, 15 Oil cylinder end cover II, 16 Oil cylinder inlet and outlet V, 17 Connecting rod.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Example 1

Referring to Fig. 1, in the double-cylinder hydraulic loading device of the present invention, a piston head 4 and a piston tail 13 are respectively installed at both ends of the piston rod 5, and the piston head 4 and the piston tail 13 are respectively placed in two oil cylinders, and the two oil cylinders are connected coaxially , The two ends of the two oil cylinders are respectively provided with oil cylinder inlet and outlet ports Ⅰ, Ⅱ, Ⅲ, Ⅳ relative to the two sides of the piston head 4 and the piston tail 13.

As a further perfect design, the two oil cylinders are connected through the oil cylinder connecting plate 9 and form an independent space with the two oil cylinders. The independent space added in the middle is a common cavity, which is a common leakage cavity for the loading liquid of the cylinders on both sides, which is used to isolate the loading liquid in the two cylinders. Water), to avoid the oil mixed with water, resulting in difficult sealing.

Oil cylinder connection plate 9 is provided with oil cylinder inlet and outlet port V. Leaked liquid can be exported to ensure normal operation.

The piston head 4 is installed on one end of the piston rod 5 through the piston fixing nut 3, and the piston head 4 is placed in the cylinder I.

Oil cylinder I is composed of oil cylinder barrel I6, oil cylinder end cover I1 installed on both sides of oil cylinder barrel I6 and intermediate connecting plate 8.

The piston tail 13 is placed in the oil cylinder II, and the oil cylinder II is composed of an oil cylinder barrel II14, an oil cylinder end cover II15 installed on both sides of the oil cylinder barrel II14 and an installation base 12. Oil cylinder inlet and outlet port I2 and oil cylinder inlet and outlet port II7 are arranged at both ends of the cylinder barrel I6, oil cylinder inlet and outlet port III10 is arranged on the mounting base 12, and oil cylinder inlet and outlet port IV11 is arranged on the cylinder end cover II15. The oil circuit for dual hydraulic cylinders to realize loading is connected through four oil inlet and outlet ports, so as to realize the axial movement of the piston rod in the two hydraulic cylinders and realize the loading function.

The connecting rod 17 connects the oil cylinder barrel I6, the installation base 12 and the oil cylinder end cover II15. The positioning of the two oil cylinders is realized by the oil cylinder connecting plate 9 and the connecting rod 17 to prevent axial movement.

When loading the oil cylinder I, inject the loading liquid through the oil cylinder inlet and outlet port II7 and the oil cylinder inlet and outlet port IV11; on the contrary, when loading the oil cylinder II, inject the loading liquid through the oil cylinder inlet and outlet port I2 and the oil cylinder inlet and outlet port III10 to increase the loading pressure and improve loading efficiency;

The dual-cylinder hydraulic loading device of the present invention is designed with single piston and multi-cavity, and the linkage of the two cylinders provides loading pressure, so that the power is high and the efficiency is high; the design of the independent oil chamber in the middle can isolate the two oil cylinders and prevent the leakage of liquid from entering the two oil cylinders , Strengthen the sealing effect; the overall structure of the device is compact and ingenious, the loading speed is controllable, and the noise is low.

Claims (7)

1. A double-cylinder hydraulic loading device, the two ends of the piston rod are respectively equipped with a piston head and a piston tail, and the piston head and the piston tail are placed in two oil cylinders respectively, and the two oil cylinders are connected coaxially, and it is characterized in that: two oil cylinders Oil cylinder inlet and outlet ports are respectively arranged on both sides of the end relative to the piston head and the piston tail. 2. The double-cylinder hydraulic loading device according to claim 1, characterized in that: the two oil cylinders are connected through an oil cylinder connection plate, and form an independent space with the two oil cylinders. 3. The double-cylinder hydraulic loading device according to claim 2, characterized in that: the oil cylinder connection plate is provided with oil cylinder inlet and outlet ports. 4. The double-cylinder hydraulic loading device according to claim 1, 2 or 3, characterized in that: the piston head is installed on one end of the piston rod through the piston fixing nut, the oil cylinder where the piston head is located is oil cylinder I, and the piston head is placed Inside cylinder I. 5. The double-cylinder hydraulic loading device according to claim 4, characterized in that: the oil cylinder I is composed of the oil cylinder barrel I, the oil cylinder end caps I installed on both sides of the oil cylinder barrel I and the intermediate connecting plate. 6. The double-cylinder hydraulic loading device according to claim 4, characterized in that: the oil cylinder where one end of the piston tail is located is the oil cylinder II, the piston tail is placed in the oil cylinder II, and the oil cylinder II is installed on two sides of the oil cylinder barrel II and the oil cylinder barrel II. The cylinder end cover II on the side and the mounting base are composed. 7. The double-cylinder hydraulic loading device according to claim 6, characterized in that: the connecting rod connects the cylinder barrel I, the mounting base and the cylinder end cover II.