Dynamic brake static braking cycloid hydraulic motor

Abstract

The utility model relates to the technical field of cycloidal hydraulic motor discloses a dynamic brake static braking cycloidal hydraulic motor, including cycloidal hydraulic motor body, fixed cylinder and friction drum, the outer wall of fixed cylinder rear end is fixedly connected with cycloidal hydraulic motor body, the middle part of cycloidal hydraulic motor body rotating shaft outer wall is fixedly connected with friction drum, the front end of fixed cylinder is provided with connecting mechanism, the connecting mechanism includes cover and fixed bolt, the periphery of cover outer wall all is set up with L -shaped groove, the periphery of fixed cylinder inner wall front end all is fixedly connected with connecting column, connecting column all are connected with L -shaped groove joint connection. In the utility model, through the hydraulic oil that moves in the action mechanism groove, let the friction plate on the moving piston push the rotating piece and the friction drum mutually close, brake. And through the connecting column of connecting mechanism and L -shaped groove joint connection, cooperate fixed bolt reinforcement, it is convenient to open and overhaul maintenance work.

Description

Technical Field

[0001] This utility model relates to the field of cycloidal hydraulic motor technology, and in particular to a dynamic braking and static braking cycloidal hydraulic motor. Background Technology

[0002] The cycloidal hydraulic motor is a low-speed, high-torque hydraulic motor that operates on the principle of planetary reduction of internal meshing cycloidal gears. It converts hydraulic energy into mechanical energy to achieve rotary motion output. It has a simple structure and features low starting pressure and high efficiency.

[0003] However, most of the cycloidal hydraulic motors currently on the market achieve braking by cutting off or reversing the hydraulic oil circuit and using the resistance of the hydraulic oil. This places high demands on the control of the hydraulic system, the braking effect is not good, and it is inconvenient for staff to inspect and maintain the braking part, which is quite troublesome.

[0004] Therefore, those skilled in the art have provided a dynamic braking and static braking cycloidal hydraulic motor to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies and provide a dynamic and static braking cycloidal hydraulic motor. By introducing hydraulic oil into the moving groove of the actuating mechanism, the moving piston pushes the friction plate on the rotating plate to come into close contact with the friction drum, thus achieving braking. The connecting column in the connecting mechanism is engaged with the L-shaped groove and reinforced with fixing bolts, facilitating disassembly for inspection and maintenance.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A dynamic braking and static braking cycloidal hydraulic motor includes a cycloidal hydraulic motor body, a fixed cylinder, and a friction drum. The outer wall of the rear end of the fixed cylinder is fixedly connected to the cycloidal hydraulic motor body. The middle part of the outer wall of the rotating shaft of the cycloidal hydraulic motor body is fixedly connected to the friction drum. A connecting mechanism is provided at the front end of the fixed cylinder. The connecting mechanism includes a cover plate and fixing bolts. L-shaped grooves are formed around the outer wall of the cover plate. Connecting posts are fixedly connected around the front end of the inner wall of the fixed cylinder. The connecting posts are engaged with the L-shaped grooves. The fixed cylinder is equipped with an actuating mechanism, which includes two rotating plates, two pins and a moving piston. Friction plates are fixedly connected to the side of the rotating plates away from the center of the fixed cylinder. Tension springs are fixedly connected to the upper end of the side of the rotating plates near the center of the fixed cylinder. A power block is fixedly connected to the upper end of the inner wall of the rear end of the fixed cylinder. A moving groove is opened inside the power block. The side of the moving piston away from the center of the power block passes through the power block and is hinged to the rotating plates. The above technical solution, by introducing hydraulic oil into the moving groove, allows the moving piston to push the friction plate on the rotating plate to come into close contact with the friction drum fixedly connected to the output shaft of the cycloidal hydraulic motor body. This results in strong braking force and good effect, while also being easy to control. In addition, the connecting column is snapped into the L-shaped groove and reinforced with fixing bolts, allowing the cover plate to remain connected to the fixed cylinder. By unscrewing the fixing bolts and rotating the cover plate, the snapping state of the connecting column can be released, facilitating maintenance work by the staff.

[0007] Furthermore, the outer wall of one side of the fixed cylinder is threadedly connected to the fixing bolt, and the other side of the fixing bolt passes through the fixed cylinder and is threadedly connected to the cover plate; The above technical solution involves using a fixing bolt threaded onto the fixed cylinder, which passes through the fixed cylinder and is threaded onto the cover plate. This makes it difficult for the cover plate to rotate on the fixed cylinder, allowing the four connecting posts fixed inside the fixed cylinder to maintain a snap-fit ​​connection with the L-shaped groove on the cover plate.

[0008] Furthermore, a front bearing is fixedly connected to the inner wall of the cover plate, and the inner wall of the front bearing is fixedly connected to the rotating shaft of the cycloidal hydraulic motor body. The above technical solution reduces friction between the cover plate and the rotating shaft of the cycloidal hydraulic motor body by fixing the front bearing to the inner wall of the cover plate. At the same time, the sealing cover on the front bearing can prevent foreign objects from the external environment from entering the fixed cylinder.

[0009] Furthermore, a rear bearing is fixedly connected to the rear end of the inner wall of the fixed cylinder, and the inner wall of the rear bearing is fixedly connected to the rotating shaft of the cycloidal hydraulic motor body. By using the above technical solution, the rear bearing, which is fixedly connected to the inner wall of the fixed cylinder, is fixedly connected to the rotating shaft of the cycloidal hydraulic motor body, thereby reducing the friction between the fixed cylinder and the rotating shaft and reducing the wear of the rotating shaft.

[0010] Furthermore, the rear ends of the pins are all fixedly connected to the fixed cylinder, and the outer walls of the pins are all rotatably connected to the rotating plate; By using the above technical solution, two pins are fixedly connected inside the fixed cylinder and rotatably connected to the rotating plate, so that the lower end of the rotating plate is fixed, allowing the rotating plate to move along a preset trajectory when pulled by the tension spring or pushed by the moving piston, so that the friction plate can move away from or closer to the friction drum normally.

[0011] Furthermore, each of the movable pistons slides inside the movable groove, and each of the movable pistons has a sealing ring fixedly connected to its outer wall, with the outer wall of the sealing ring tightly fitting the movable groove. By controlling the amount of hydraulic oil flowing into the moving groove, and with the help of a tension spring acting on the rotating plate, the moving piston can extend or retract into the moving groove of the power block. The sealing ring fixedly connected to the moving groove can seal the gap between the moving piston and the inner wall of the moving groove, thereby improving the sealing performance of the power block and preventing hydraulic oil leakage.

[0012] Furthermore, a sealing gasket is fixedly connected to the edge of the outer wall at the rear end of the cover plate, and the outer wall at the rear end of the sealing gasket is tightly fitted with the fixing cylinder; By using the above technical solution, the sealing gasket fixedly connected to the cover plate and the fixed cylinder are tightly fitted together, so that when the cover plate and the fixed cylinder are connected together, the gap between the two is filled, which can improve the sealing performance between the cover plate and the fixed cylinder, prevent foreign objects from entering the fixed cylinder, and ensure that the internal structure can operate normally.

[0013] Furthermore, an outer pipe is connected through the middle of the outer wall of the rear end of the power block, and the upper end of the outer pipe passes through the fixed cylinder and is provided with a connecting thread. Through the above technical solution, by connecting the external pipe through the power block and extending it through the fixed cylinder, the operator can connect the external hydraulic oil delivery pipe to the external hydraulic oil pipeline using the connecting thread on the external pipe. This allows external hydraulic oil to enter the moving groove, creating pressure to push the moving piston. Thus, when the motor is working, hydraulic oil can be supplied for braking, and when the motor is not working, hydraulic oil can be supplied for braking.

[0014] This utility model has the following beneficial effects: 1. The present invention proposes a dynamic braking and static braking cycloidal hydraulic motor. Hydraulic oil is introduced into the moving groove in the power block of the action mechanism, which pushes the moving piston to move. This allows the rotating plate to overcome the elastic force of the tension spring and drive the friction plates to move away from each other. The friction plates are then in close contact with the friction drum fixedly connected to the output shaft of the cycloidal hydraulic motor body. Hydraulic oil is used as the medium, resulting in large braking force and good effect. At the same time, only the inlet and outlet of the hydraulic oil need to be controlled, making the control simple.

[0015] 2. The present invention proposes a dynamic braking and static braking cycloidal hydraulic motor, which is connected to the L-shaped groove through the connecting column in the connecting mechanism and reinforced with fixing bolts, so that the cover plate can be connected to the fixed cylinder. By unscrewing the fixing bolts and rotating the cover plate, the connection to the connecting column can be released, allowing the cover plate to be separated from the fixed cylinder, thereby facilitating the maintenance and repair of the braking part by the staff. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a dynamic braking and static braking cycloidal hydraulic motor proposed in this utility model. Figure 2An exploded view of a dynamic braking and static braking cycloidal hydraulic motor proposed in this utility model; Figure 3 A side sectional view of a dynamic braking and static braking cycloidal hydraulic motor proposed in this utility model; Figure 4 This is a front sectional view of a dynamic braking and static braking cycloidal hydraulic motor proposed in this utility model. Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0017] Explanation of reference numerals in the attached figures: 1. Cycloidal hydraulic motor body; 2. Fixed cylinder; 3. Connecting mechanism; 301. Cover plate; 302. L-shaped groove; 303. Connecting column; 304. Fixing bolt; 4. Front bearing; 5. Rear bearing; 6. Friction drum; 7. Action mechanism; 701. Rotating plate; 702. Friction plate; 703. Pin; 704. Tension spring; 705. Power block; 706. Moving groove; 707. Moving piston; 708. Sealing ring; 709. External connecting pipe; 8. Sealing gasket. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 This utility model provides a specific implementation method: A dynamic and static braking cycloidal hydraulic motor includes a cycloidal hydraulic motor body 1, a fixed cylinder 2, and a friction drum 6. The outer wall of the rear end of the fixed cylinder 2 is fixedly connected to the cycloidal hydraulic motor body 1. The middle part of the outer wall of the rotating shaft of the cycloidal hydraulic motor body 1 is fixedly connected to the friction drum 6. An actuation mechanism 7 is provided inside the fixed cylinder 2. The actuation mechanism 7 includes two rotating plates 701, two pins 703, and a moving piston 707. Friction plates 702 are fixedly connected to the side of the rotating plates 701 away from the center of the fixed cylinder 2. Tension springs 704 are fixedly connected to the upper end of the side of the rotating plates 701 near the center of the fixed cylinder 2. A power block 705 is fixedly connected to the upper end of the inner wall of the rear end of the fixed cylinder 2. A moving groove 706 is opened inside the power block 705. The side of the moving piston 707 away from the center of the power block 705 passes through the power block 705 and is hinged to the rotating plates 701.

[0020] Hydraulic oil is introduced into the moving groove 706 in the power block 705 of the action mechanism 7, which pushes the moving piston 707 to move, so that the rotating plate 701 can overcome the elastic force of the tension spring 704 and drive the friction plate 702 to move away from each other, so that the friction plate 702 and the friction drum 6 fixedly connected to the output shaft of the cycloidal hydraulic motor body 1 are in close contact with each other. Hydraulic oil is used as the medium, which has a large braking force and good effect. At the same time, only the inlet and outlet of hydraulic oil need to be controlled, which is simple to control.

[0021] A front bearing 4 is fixedly connected to the inner wall of the cover plate 301. The inner wall of the front bearing 4 is fixedly connected to the rotating shaft of the cycloidal hydraulic motor body 1. By fixing the front bearing 4 to the inner wall of the cover plate 301 and the rotating shaft of the cycloidal hydraulic motor body 1, the friction between the cover plate 301 and the rotating shaft is reduced. At the same time, the sealing cover on the front bearing 4 can prevent foreign objects from the external environment from entering the fixed cylinder 2. A rear bearing 5 is fixedly connected to the rear end of the inner wall of the fixed cylinder 2. The inner wall of the rear bearing 5 is fixedly connected to the rotating shaft of the cycloidal hydraulic motor body 1. The rotating shaft of the cycloidal hydraulic motor body 1 is fixedly connected to the fixed cylinder 2, which reduces the friction between the fixed cylinder 2 and the rotating shaft, thus reducing the wear of the rotating shaft. The rear ends of the pins 703 are all fixedly connected to the fixed cylinder 2, and the outer walls of the pins 703 are rotatably connected to the rotating plate 701. By fixing the two pins 703 inside the fixed cylinder 2 and rotatably connecting them to the rotating plate 701, the lower end of the rotating plate 701 is fixed, allowing the rotating plate 701 to move along a preset trajectory when pulled by the tension spring 704 or pushed by the moving piston 707, so that the friction plate 702 can move normally away from or towards the friction drum 6. The movable pistons 707 slide inside the movable grooves 706. Sealing rings 708 are fixedly connected to the outer walls of the movable pistons 707, and the outer walls of the sealing rings 708 are tightly fitted to the movable grooves 706. By controlling the amount of hydraulic oil flowing into the movable grooves 706, and in conjunction with the tension spring 704 acting on the rotating plate 701, the movable pistons 707 can extend or retract into the movable grooves 706 in the power block 705. The sealing rings 708 fixedly connected to the movable grooves 706 seal the gap between the movable pistons 707 and the inner walls of the movable grooves 706, improving the sealing performance of the power block 705 and preventing... Hydraulic oil leakage occurs when an external pipe 709 is connected to the middle of the outer wall of the rear end of the power block 705. The upper end of the external pipe 709 passes through the fixed cylinder 2 and is provided with a connecting thread. Through the external pipe 709 connected to the power block 705 and extending out of the fixed cylinder 2, the operator can use the connecting thread on the external pipe 709 to connect to an external hydraulic oil delivery pipeline. This allows external hydraulic oil to enter the moving groove 706, forming pressure to push the moving piston 707 to move. Thus, when the motor is working, hydraulic oil can be supplied for braking, and when the motor is not working, hydraulic oil can be supplied for braking.

[0022] Reference Figure 1 , Figure 2 and Figure 3 The front end of the fixed cylinder 2 is provided with a connecting mechanism 3, which includes a cover plate 301 and a fixing bolt 304. L-shaped grooves 302 are formed around the outer wall of the cover plate 301. Connecting posts 303 are fixedly connected around the front end of the inner wall of the fixed cylinder 2. The connecting posts 303 are engaged with the L-shaped grooves 302. The engagement of the connecting posts 303 with the L-shaped grooves 302, reinforced by the fixing bolts 304, allows the cover plate 301 to remain connected to the fixed cylinder 2. Unscrewing the fixing bolts 304 and rotating the cover plate 301 releases the engagement of the connecting posts 303, allowing the cover plate 301 to separate from the fixed cylinder 2, thus facilitating maintenance and repair of the braking system. One side of the outer wall of the fixed cylinder 2 is threadedly connected to the fixing bolt 304, and the other side of the fixing bolt 304... A fixing bolt 304, threaded through the fixing cylinder 2 and connected to the cover plate 301, passes through the fixing cylinder 2 and is threaded to the cover plate 301, making it difficult for the cover plate 301 to rotate on the fixing cylinder 2. This allows the four connecting posts 303 fixedly connected inside the fixing cylinder 2 to maintain a snap-fit ​​state with the L-shaped groove 302 opened on the cover plate 301. A sealing gasket 8 is fixedly connected to the edge of the outer wall at the rear end of the cover plate 301. The outer wall at the rear end of the sealing gasket 8 fits tightly against the fixing cylinder 2. By ensuring that the sealing gasket 8 fixedly connected to the cover plate 301 fits tightly against the fixing cylinder 2, the gap between the cover plate 301 and the fixing cylinder 2 is filled when they are connected together, which can improve the sealing performance between the cover plate 301 and the fixing cylinder 2, prevent foreign objects from entering the fixing cylinder 2, and ensure that the internal structure can operate normally.

[0023] Working principle: When using this dynamic and static braking cycloidal hydraulic motor, the operator first uses bolts and nuts to fix the motor in the required position and connects it to the external load via the spline on the rotating shaft. Then, the connecting thread on the external pipe 709 is used to connect it to the external hydraulic oil delivery pipeline. In both non-working and working states, a large amount of hydraulic oil can be injected into the moving groove 706 via the external pipe 709, pushing the moving piston 707 to move. This allows the rotating plate 701 to overcome the elastic force of the tension spring 704, causing the friction plate 702 to come into close contact with the friction drum 6 for braking. Finally, after removing the motor, the operator can unscrew the fixing bolt 304 and then rotate the cover plate 301 to release the L-shaped groove 302 from the connecting column 303, allowing the cover plate 301 to separate from the fixed cylinder 2, facilitating the operator's inspection and maintenance of the internal structure of the fixed cylinder 2.

[0024] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0025] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. 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 dynamic braking and static braking cycloidal hydraulic motor, comprising a cycloidal hydraulic motor body (1), a fixed cylinder (2), and a friction drum (6), characterized in that: The outer wall of the rear end of the fixed cylinder (2) is fixedly connected to the cycloidal hydraulic motor body (1). The middle part of the outer wall of the rotating shaft of the cycloidal hydraulic motor body (1) is fixedly connected to the friction drum (6). The front end of the fixed cylinder (2) is provided with a connecting mechanism (3). The connecting mechanism (3) includes a cover plate (301) and a fixing bolt (304). L-shaped grooves (302) are opened around the outer wall of the cover plate (301). Connecting columns (303) are fixedly connected around the front end of the inner wall of the fixed cylinder (2). The connecting columns (303) are all snapped into the L-shaped grooves (302). The fixed cylinder (2) is equipped with an actuation mechanism (7). The actuation mechanism (7) includes two rotating plates (701), two pins (703), and a moving piston (707). Friction plates (702) are fixedly connected to the side of the rotating plates (701) away from the center of the fixed cylinder (2). Tension springs (704) are fixedly connected to the upper end of the side of the rotating plates (701) near the center of the fixed cylinder (2). A power block (705) is fixedly connected to the upper end of the inner wall of the rear end of the fixed cylinder (2). A moving groove (706) is opened inside the power block (705). The side of the moving piston (707) away from the center of the power block (705) passes through the power block (705) and is hinged to the rotating plates (701).

2. The dynamic braking and static braking cycloidal hydraulic motor according to claim 1, characterized in that: The outer wall of one side of the fixed cylinder (2) is threadedly connected to the fixing bolt (304), and the other side of the fixing bolt (304) passes through the fixed cylinder (2) and is threadedly connected to the cover plate (301).

3. The dynamic braking and static braking cycloidal hydraulic motor according to claim 1, characterized in that: The inner wall of the cover plate (301) is fixedly connected to a front bearing (4), and the inner wall of the front bearing (4) is fixedly connected to the rotating shaft of the cycloidal hydraulic motor body (1).

4. A dynamic braking static braking cycloidal hydraulic motor according to claim 1, characterized in that: The rear end of the inner wall of the fixed cylinder (2) is fixedly connected to a rear bearing (5), and the inner wall of the rear bearing (5) is fixedly connected to the rotating shaft of the cycloidal hydraulic motor body (1).

5. A dynamic braking static braking cycloidal hydraulic motor according to claim 1, characterized in that: The rear end of each pin (703) is fixedly connected to the fixed cylinder (2), and the outer wall of each pin (703) is rotatably connected to the rotating plate (701).

6. A dynamic braking static braking cycloidal hydraulic motor according to claim 1, characterized in that: The movable pistons (707) slide inside the movable groove (706), and the outer walls of the movable pistons (707) are fixedly connected with sealing rings (708), and the outer walls of the sealing rings (708) are tightly fitted with the movable groove (706).

7. A dynamic braking static braking cycloidal hydraulic motor according to claim 1, characterized in that: A sealing gasket (8) is fixedly connected to the edge of the outer wall of the rear end of the cover plate (301), and the outer wall of the rear end of the sealing gasket (8) is tightly fitted with the fixed cylinder (2).

8. A dynamic braking static braking cycloidal hydraulic motor according to claim 1, characterized in that: An external pipe (709) is connected through the middle of the outer wall of the rear end of the power block (705). The upper end of the external pipe (709) passes through the fixed cylinder (2) and is provided with a connecting thread.

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