Angle positioning type rotary hydraulic cylinder

Abstract

The utility model discloses an angle positioning type rotary hydraulic cylinder, and particularly relates to the field of hydraulic cylinders, the angle positioning type rotary hydraulic cylinder comprises a main shell, a shaft rotor is arranged on the inner side of the main shell, an oil cavity is formed between the main shell and the shaft rotor, a fan-shaped block and a check block are fixedly arranged on the outer side of the shaft rotor, and the check block is fixedly arranged on the outer side of the main shell. The fan-shaped block and the check block divide the oil cavity into an oil cavity A and an oil cavity B. A right rotating buffering adjusting valve and a left rotating buffering adjusting valve are arranged on the main shell, and plug screws are arranged on one side of the right rotating buffering adjusting valve and one side of the left rotating buffering adjusting valve. When the shaft rotor of the rotary hydraulic cylinder rotates, rapid movement is converted into slow positioning movement, the movement efficiency is guaranteed, meanwhile, the positioning accuracy and the service life of the hydraulic cylinder are guaranteed, and the device is simple in design principle and has the advantages of being low in manufacturing cost, accurate in positioning, high in reliability and the like. And the control is simple and maintenance-free.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to an angle positioning type rotary hydraulic cylinder. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy. Using it to achieve reciprocating motion eliminates the need for a reduction gear, eliminates transmission backlash, and provides smooth motion. It is widely used in the hydraulic systems of various machines. Traditional hydraulic cylinders consist of a cylinder body, piston, and piston rod. The cylinder body has oil inlets and outlets. The movement of the piston and piston rod is achieved through the flow of hydraulic oil, and various control functions are achieved through external components. The movement of this hydraulic rod is linear, and the external components it drives also move linearly. In actual production processes, many external components driven by hydraulic cylinders require not only linear travel but also rotational motion. However, hydraulic cylinders themselves cannot achieve rotational motion. To meet these production needs, rotary hydraulic cylinders are indispensable.

[0003] In modern machinery and automation equipment, actuators often face the challenge of fixed-angle steering. Designers consider a variety of factors, including functionality, design cost, application, and installation and commissioning, to determine their design options. These actuators can be driven by either electric or hydraulic drive. However, existing rotary hydraulic cylinders are complex in structure, and their angular positioning is imprecise during rotation, making them inadequate for practical applications. Utility Model Content

[0004] The purpose of the present utility model is to provide an angle positioning type rotary hydraulic cylinder to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an angle positioning type rotary hydraulic cylinder, comprising a main housing, wherein the two ends of the main housing are respectively provided with a front end cover and a rear end cover, the inner side of the main housing is provided with a shaft rotor, an oil chamber is formed between the main housing and the shaft rotor, and a fan-shaped block and a stopper are fixedly provided on the outer side of the shaft rotor, and the fan-shaped block and the stopper divide the oil chamber into oil chamber A and oil chamber B, a right rotation buffer regulating valve and a left rotation buffer regulating valve are provided on the main housing, and a plug screw is provided on one side of the right rotation buffer regulating valve and the left rotation buffer regulating valve.

[0006] In a preferred embodiment, deep groove ball bearings are provided at both ends of the shaft rotor, the front end cover and the rear end cover are connected to the main housing through locking nuts, and an elastic retaining ring is provided at the connection between the main housing and the front end cover, and a lip sealing ring is provided at the connection between the shaft rotor and the main housing. The setting of the deep groove ball bearings facilitates the rotation of the shaft rotor, and the setting of the elastic retaining ring and the lip sealing ring can ensure the sealing of the oil chamber.

[0007] In a preferred embodiment, the main shell is provided with a first hydraulic oil inlet and a second hydraulic oil inlet, both of which are connected to the oil chamber. The arrangement of the first hydraulic oil inlet and the second hydraulic oil inlet facilitates the flow of hydraulic oil into and out of the oil chamber.

[0008] In a preferred embodiment, a left rotation angle limit adjustment screw and a right rotation angle limit adjustment screw are provided on the main shell, and one end of the left rotation angle limit adjustment screw and the right rotation angle limit adjustment screw extends into the oil chamber. The setting of the left rotation angle limit adjustment screw and the right rotation angle limit adjustment screw facilitates the limiting of the stop block and the fan block, thereby realizing the limitation of the adjustment angle of the shaft rotor.

[0009] In a preferred embodiment, oil guide holes are provided on both of the plugging screws, and the two oil guide holes are respectively connected to the first hydraulic oil inlet and outlet and the second hydraulic oil inlet and outlet. The oil guide holes are provided on the plugging screws to facilitate the return of the hydraulic oil.

[0010] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0011] The utility model directly drives the actuator with a simple hydraulic control principle, and realizes the precise positioning of the steering angle through the mechanical design of the actuator. The actuator is the angle positioning rotary hydraulic cylinder in the utility model, which drives the shaft rotor to rotate through hydraulic oil, and uses a rotary buffer regulating valve and a rotary angle limit regulating screw for limiting the position, thereby ensuring the accuracy of the angle adjustment of the rotary hydraulic cylinder, and can use the rotary angle limit regulating screw to fine-tune the rotation angle. Moreover, when the shaft rotor of the rotary hydraulic cylinder rotates, it changes from a rapid motion to a slow positioning motion process, thereby achieving the goal of ensuring both the motion efficiency and the positioning accuracy and the life of the hydraulic cylinder. The design principle of this application is relatively simple, and has the advantages of low manufacturing cost, accurate positioning, simple control and maintenance-free. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is the main view of the utility model;

[0014] Figure 2 This utility model Figure 1 Schematic diagram of the AA cross-section structure;

[0015] Figure 3 This utility model Figure 1 Schematic diagram of the BB cross-section structure;

[0016] Figure 4 This utility model Figure 1 Schematic diagram of the DD cross-section structure;

[0017] Figure 5 This utility model Figure 1 Schematic diagram of the FF cross-section structure;

[0018] Figure 6 This utility model Figure 5 Schematic diagram of the EE cross-section structure.

[0019] In the figure: 1. Main housing; 2. Front end cover; 3. Rear end cover; 4. Shaft rotor; 5. Sector block; 6. Stopper; 7. Oil chamber A; 8. Oil chamber B; 9. Right-rotation buffer regulating valve; 10. Left-rotation buffer regulating valve; 11. Plug screw; 12. Deep groove ball bearing; 13. Locking nut; 14. Elastic retaining ring; 15. Lip seal; 16. First hydraulic oil inlet and outlet; 17. Second hydraulic oil inlet and outlet; 18. Left-rotation angle limit adjusting screw; 19. Right-rotation angle limit adjusting screw. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] See also Figures 1-6The utility model provides an angle positioning type rotary hydraulic cylinder, comprising a main housing 1, wherein both ends of the main housing 1 are respectively provided with a front end cover 2 and a rear end cover 3, a shaft rotor 4 is provided on the inner side of the main housing 1, an oil chamber is formed between the main housing 1 and the shaft rotor 4, a sector block 5 and a stopper 6 are fixedly provided on the outer side of the shaft rotor 4, the sector block 5 and the stopper 6 divide the oil chamber into an A oil chamber 7 and a B oil chamber 8, a right rotation buffer regulating valve 9 and a left rotation buffer regulating valve 10 are provided on the main housing 1, and a plugging screw 11 is provided on one side of the right rotation buffer regulating valve 9 and the left rotation buffer regulating valve 10.

[0022] In a preferred embodiment, deep groove ball bearings 12 are provided at both ends of the shaft rotor 4, the front end cover 2 and the rear end cover 3 are connected to the main housing 1 through a locking nut 13, and an elastic retaining ring 14 is provided at the connection between the main housing 1 and the front end cover 2, and a lip sealing ring 15 is provided at the connection between the shaft rotor 4 and the main housing 1. The setting of the deep groove ball bearing 12 facilitates the rotation of the shaft rotor 4, and the setting of the elastic retaining ring 14 and the lip sealing ring 15 can ensure the sealing of the oil chamber.

[0023] In a preferred embodiment, a first hydraulic oil inlet and outlet 16 and a second hydraulic oil inlet and outlet 17 are provided on the main housing 1 , and both the first hydraulic oil inlet and outlet 16 and the second hydraulic oil inlet and outlet 17 are communicated with the oil chamber.

[0024] In a preferred embodiment, a left rotation angle limit adjustment screw 18 and a right rotation angle limit adjustment screw 19 are provided on the main housing 1, and one end of the left rotation angle limit adjustment screw 18 and the right rotation angle limit adjustment screw 19 extends into the oil chamber. The setting of the left rotation angle limit adjustment screw 18 and the right rotation angle limit adjustment screw 19 can limit the stop block 6 and the sector block 5, and the rotation angle of the shaft rotor 4 can be fine-tuned by the left rotation angle limit adjustment screw 18 and the right rotation angle limit adjustment screw 19.

[0025] In a preferred embodiment, both of the plugging screws 11 are provided with oil guide holes, and the two oil guide holes are respectively connected to the first hydraulic oil inlet and outlet 16 and the second hydraulic oil inlet and outlet 17. The provision of the oil guide holes can facilitate the return of the hydraulic oil.

[0026] The working principle of this utility model:

[0027] When the hydraulic oil enters through the first hydraulic oil inlet and outlet 16, the hydraulic oil enters the B oil chamber 8, and the hydraulic oil pushes the block 6, which is fixed on the 2-axis rotor 4. As a result, under the action of the hydraulic oil, the block 6 and the shaft rotor 4 rotate rapidly counterclockwise. The rotation speed is determined by the flow rate of the hydraulic oil. At the same time, the oil in the A oil chamber 7 is quickly discharged through the second hydraulic oil inlet and outlet 17. When the block 6 reaches the position and blocks the second hydraulic oil inlet and outlet 17, the remaining oil in the A oil chamber 7 flows through the right-rotating buffer regulating valve 9 and flows into the second hydraulic oil inlet and outlet 17 from the oil guide hole at the plugging screw 11, and finally the buffer valve 9 is opened. Slowly discharge until the stopper 6 reaches the right rotation angle limit adjustment screw 19, the stopper 6 and the shaft rotor 4 stop rotating, and the oil in the A oil chamber 7 stops being discharged at the same time. The right rotation buffer regulating valve 9 is used to adjust the speed of the shaft rotor 4 before the final limit selection to prevent collision with the rotation angle limit adjustment screw 19 due to rapid rotation. If the shaft rotor 4 reaches the end point, that is, the position of the right rotation angle limit adjustment screw 19, and it is found that the rotation angle of the shaft rotor 4 still has a certain deviation, then the final stop angle of the shaft rotor 4 can be easily achieved by fine-tuning the screw-in length of the right rotation angle limit adjustment screw 19;

[0028] Similarly, when hydraulic oil enters through the second hydraulic oil inlet and outlet 17, it enters oil chamber A 7, pushing stopper 6, causing the shaft rotor 4 to rotate rapidly in a clockwise direction. When stopper 6 reaches and blocks the first hydraulic oil inlet and outlet 16, the shaft rotor 4 switches from rapid rotation to slow rotation until stopper 6 is blocked by the left rotation angle limit adjustment screw 18, causing the shaft rotor 4 to stop and be positioned. Similarly, if the positioning angle of the shaft rotor 4 deviates at this point, the final stopping angle of the shaft rotor 4 can be easily achieved by fine-tuning the screwing length of the left rotation angle limit adjustment screw 18.

[0029] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An angle positioning type rotary hydraulic cylinder, comprising a main housing (1), wherein a front end cover (2) and a rear end cover (3) are respectively arranged at both ends of the main housing (1), and a shaft rotor (4) is arranged inside the main housing (1). Features: An oil chamber is formed between the main housing (1) and the shaft rotor (4), and a sector block (5) and a stopper (6) are fixedly provided on the outer side of the shaft rotor (4), and the sector block (5) and the stopper (6) divide the oil chamber into an A oil chamber (7) and a B oil chamber (8). A right-rotating buffer regulating valve (9) and a left-rotating buffer regulating valve (10) are provided on the main housing (1), and a plug screw (11) is provided on one side of the right-rotating buffer regulating valve (9) and the left-rotating buffer regulating valve (10).

2. An angle positioning rotary hydraulic cylinder according to claim 1, It is characterized in that Deep groove ball bearings (12) are provided at both ends of the shaft rotor (4); the front end cover (2) and the rear end cover (3) are connected to the main housing (1) via locking nuts (13); an elastic retaining ring (14) is provided at the connection between the main housing (1) and the front end cover (2); and a lip seal ring (15) is provided at the connection between the shaft rotor (4) and the main housing (1).

3. The angle positioning rotary hydraulic cylinder according to claim 1, It is characterized in that The main housing (1) is provided with a first hydraulic oil inlet and outlet (16) and a second hydraulic oil inlet and outlet (17), and the first hydraulic oil inlet and outlet (16) and the second hydraulic oil inlet and outlet (17) are both in communication with the oil chamber.

4. The angle positioning rotary hydraulic cylinder according to claim 1, It is characterized in that The main housing (1) is provided with a left rotation angle limit adjustment screw (18) and a right rotation angle limit adjustment screw (19), and one end of the left rotation angle limit adjustment screw (18) and the right rotation angle limit adjustment screw (19) extends into the oil chamber.

5. The angle positioning rotary hydraulic cylinder according to claim 3, It is characterized in that The two plugging screws (11) are each provided with an oil guide hole, and the two oil guide holes are respectively connected to the first hydraulic oil inlet and outlet (16) and the second hydraulic oil inlet and outlet (17).

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