Plunger type hydraulic synchronous split-flow motor

Abstract

The utility model provides a plunger type hydraulic synchronous shunt motor, which relates to the technical field of motors and comprises a plurality of plunger type hydraulic motors, one end of each plunger type hydraulic motor is provided with a spline shaft, the other end of each plunger type hydraulic motor is provided with a spline groove, and the plurality of plunger type hydraulic motors are sequentially connected in series through the spline shafts and the spline grooves. According to the utility model, a quick connecting structure is adopted, the spline shaft is inserted into the spline groove, the convex ring is embedded into the annular groove, the connecting plug on the surface of the convex ring is inserted into the connecting groove, the connecting plug downwards extrudes the movable roller, and the movable roller is connected with the movable roller. The movable roller drives the sliding block to slide downwards in the sliding groove, after the connecting plug completely enters the movable roller, the movable roller clamps the tail end of the connecting plug under the action of the spring, disassembly and assembly are convenient, operation is easy, connection is rapid, the motor installation time is greatly saved, certain axial fixation is provided for the motor, and the service life of the motor is prolonged. And the displacement of the motor in the axial direction is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a plunger type hydraulic synchronous shunt motor. Background Art

[0002] In the field of automated machining production lines, many processes require that various actuators, such as hydraulic cylinders, move simultaneously to complete some collaborative tasks. When the distance is far, it is inconvenient to use mechanical synchronization to achieve simultaneous action. A common practice is to use a plunger-type hydraulic synchronous shunt motor to synchronize the actions. The hydraulic synchronous shunt motor consists of a series of mutually coupled plunger pumps or plunger motors. Each piece has the function of a plunger pump or plunger motor. The entire component has a common oil inlet channel and its own independent oil outlet.

[0003] In the prior art, the driving shafts between the motor segments are coupled together by splines. Since this connection is a rigid connection, it ensures that the rotational speeds of the motor segments are the same under any circumstances. Under the conditions of the same processing accuracy and consistent tolerances, the amount of oil supplied to or collected from each hydraulic cylinder per unit time is equal or proportional, thereby ensuring the synchronization of the movements of each hydraulic cylinder. Although the synchronous rotation of multiple motors is achieved through spline connection, the spline coupling mainly provides circumferential torque transmission and positioning, and cannot provide sufficient axial fixation. In order to prevent the motor from shifting in the axial direction, it is necessary to use locking nuts, pins or locating rings to axially fix the adjacent motors. When the number of motors connected is large, the fixing steps are cumbersome, time-consuming and labor-intensive, and it is also very inconvenient when regularly maintaining or replacing the motors. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a plunger type hydraulic synchronous shunt motor.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a plunger-type hydraulic synchronous shunt motor comprises a plurality of plunger-type hydraulic motors, one end of the plunger-type hydraulic motor is set as a spline shaft, and the other end of the plunger-type hydraulic motor is provided with a spline groove, and the plurality of plunger-type hydraulic motors are connected in series through the spline shaft and the spline groove in sequence, and the outer sides of the two outermost plunger hydraulic motors are provided with oil pans, and the oil pans are connected with oil pipelines, and the plunger hydraulic motor is provided with an annular groove on the side close to the spline shaft, the inner wall of the annular groove is provided with a connecting groove, the side walls of the connecting groove are provided with sliding grooves, and sliders are slidably connected inside the sliding grooves, and movable rollers are provided between the sliders, and a limiting roller is provided directly above the movable roller, and springs are provided between the upper and lower ends of the slider and the inner wall of the sliding groove, and a convex ring extends on the side of the plunger hydraulic motor close to the spline groove, and a connecting plug is fixed on the side of the convex ring.

[0006] Preferably, the end of the connecting plug is set to an arc surface, and the plug end with an arc surface can be inserted into the connecting groove more smoothly, reducing friction during plugging and unplugging, making the connection easier.

[0007] Preferably, both ends of the limiting roller are rotatably connected to the side walls of the connecting groove, and both ends of the movable roller are rotatably connected to the slider. The rotatable connection makes it easier for the plug to enter the double rollers, facilitates plugging and unplugging, and improves the efficiency of disassembly and assembly of the motor.

[0008] Preferably, the connecting plugs and the connecting grooves are provided in plurality, and the axial fixing effect between the motors is enhanced through the multiple connecting structures, further preventing the motors from being displaced in the axial direction.

[0009] Preferably, the connecting plugs and the connecting grooves are distributed in a circular array. The circular array layout makes the connecting structure evenly stressed, thereby increasing the service life of the connecting structure.

[0010] Preferably, an anti-slip rubber ring is embedded between the convex ring and the annular groove, and the anti-slip rubber ring increases the friction between the convex ring and the annular groove, thereby increasing the axial stability between the motors.

[0011] Beneficial effects

[0012] In the prior art, the driving shafts between the motor plates are coupled together by splines. Since this connection is a rigid connection, it ensures that the rotational speeds of the motor plates are the same under any circumstances. Under the conditions of the same processing accuracy and consistent tolerances, the oil supplied to or collected from each hydraulic cylinder per unit time is equal or proportional, thereby ensuring the synchronization of the movements of each hydraulic cylinder. Although the synchronous rotation of multiple motors is achieved through spline connection, the spline coupling mainly provides circumferential torque transmission and positioning, and cannot provide sufficient axial fixation. In order to prevent the motor from shifting in the axial direction, it is necessary to use locking nuts, pins or locating rings to axially fix the adjacent motors. When the motor When the number of connections is large, the fixing steps are complicated, time-consuming and labor-intensive, and it is also very inconvenient when regularly maintaining or replacing the motor. To address this problem, the utility model adopts a quick connection structure, in which the spline shaft is inserted into the spline groove, the convex ring is embedded in the annular groove, and the connecting plug on the surface of the convex ring is inserted into the connecting groove. The connecting plug squeezes the movable roller downward, and the movable roller drives the slider to slide downward in the slide groove. After the connecting plug completely enters the movable roller, the movable roller clamps the tail end of the connecting plug under the action of the spring. This is not only convenient for disassembly and assembly, simple to operate, but also quick to connect, which greatly saves the motor installation time and provides a certain axial fixation for the motor to prevent the motor from axial displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the convex ring of the utility model;

[0015] Figure 3 It is a cross-sectional view of the utility model;

[0016] Figure 4 This is a cross-sectional view of the motor spline coupling in the present invention;

[0017] Figure 5 This is a schematic diagram of the three-dimensional structure of the connecting plug in the present utility model;

[0018] Figure 6 It is a schematic diagram of the three-dimensional structure of the connecting groove in the utility model.

[0019] Legend:

[0020] 1. Plunger hydraulic motor; 2. Spline shaft; 3. Annular groove; 301. Connecting groove; 4. Spline groove; 5. Convex ring; 6. Connecting plug; 601. Arc surface; 7. Limit roller; 8. Movable roller; 9. Slider; 10. Spring; 11. Slide groove. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0022] The specific embodiments of the present utility model are described below with reference to the accompanying drawings. Specific embodiment:

[0024] Reference Figure 1-6The plunger hydraulic synchronous shunt motor includes a plurality of plunger hydraulic motors 1, one end of the plunger hydraulic motor 1 is set as a spline shaft 2, and the other end of the plunger hydraulic motor 1 is provided with a spline groove 4, and the plurality of plunger hydraulic motors 1 are sequentially connected in series through the spline shaft 2 and the spline groove 4. The outer sides of the two outermost plunger hydraulic motors 1 are provided with oil pans, and the oil pans are connected with oil pipelines. The plunger hydraulic motor 1 is provided with an annular groove 3 on the side close to the spline shaft 2, and the inner wall of the annular groove 3 is provided with a connecting groove 301. The connecting groove The side walls of 301 are all provided with slide grooves 11, and sliders 9 are slidably connected inside the slide grooves 11. Movable rollers 8 are provided between the sliders 9, and a limiting roller 7 is provided directly above the movable roller 8. Springs 10 are provided between the upper and lower ends of the slider 9 and the inner wall of the slide groove 11. A convex ring 5 extends from the side of the plunger hydraulic motor 2 close to the spline groove 4, and a connecting plug 6 is fixed to the side of the convex ring 5. An anti-slip rubber ring is embedded between the convex ring 5 and the annular groove 3. The anti-slip rubber ring increases the friction between the convex ring 5 and the annular groove 3, thereby increasing the axial stability between the motors.

[0025] The end of the connecting plug 6 is set as an arc surface 601. The arc surface plug end can be inserted into the connecting groove 301 more smoothly, reducing the friction during plugging and unplugging, making the connection easier. The two ends of the limiting roller 7 are rotatably connected to the side walls of the connecting groove 301, and the two ends of the movable roller 8 are rotatably connected to the slider 9. The rotational connection method makes it easier for the plug to enter the double rollers, which is convenient for plugging and unplugging, and improves the efficiency of disassembly and assembly of the motor. There are multiple corresponding connecting plugs 6 and connecting grooves 301. The multiple connection structures increase the axial fixing effect between the motors and further prevent the motors from being displaced in the axial direction. The connecting plug 6 and the connecting groove 301 are both distributed in a circular array. The circular array layout makes the connection structure evenly stressed, which increases the service life of the connection structure.

[0026] In the prior art, the driving shafts between the motor segments are coupled together by splines. Since this connection is a rigid connection, it ensures that the rotational speeds of the motor segments are the same under any circumstances. Under the conditions of the same processing accuracy and consistent tolerances, the oil supplied to or collected from each hydraulic cylinder per unit time is equal or proportional, thereby ensuring the synchronization of the movements of each hydraulic cylinder. Although the synchronous rotation of multiple motors is achieved through spline connection, the spline coupling mainly provides circumferential torque transmission and positioning, and cannot provide sufficient axial fixation. In order to prevent the motor from shifting in the axial direction, it is necessary to use locking nuts, pins or locating rings to axially fix the adjacent motors. When the number of motors connected is large, it also leads to problems. The fixing steps are cumbersome, time-consuming and labor-intensive, and are also very inconvenient during regular maintenance or replacement of the motor. To address this problem, the present invention adopts a quick connection structure, in which the spline shaft 2 is inserted into the spline groove 4, the convex ring 5 is embedded in the annular groove 3, and the connecting plug 6 on the surface of the convex ring 5 is inserted into the connecting groove 301. The connecting plug 6 squeezes the movable roller 8 downward, and the movable roller 8 drives the slider 9 to slide downward in the slide groove 11. After the connecting plug 6 completely enters the movable roller 8, the movable roller 8 clamps the tail end of the connecting plug 6 under the action of the spring 10. This is not only convenient for disassembly and assembly, simple to operate, but also quick to connect, which greatly saves the motor installation time and provides a certain axial fixation for the motor to prevent the motor from shifting in the axial direction.

[0027] The working principle of the utility model is as follows: the spline shafts 2 of adjacent plunger hydraulic motors are inserted into the spline groove 4, the convex ring 5 is embedded in the annular groove 3, the connecting plug 6 on the surface of the convex ring 5 is inserted into the connecting groove 301, the connecting plug 6 squeezes the movable roller 8 downward, and the movable roller 8 drives the slider 9 to slide downward in the slide groove 11. After the connecting plug 6 completely enters the movable roller 8, the movable roller 8 clamps the tail end of the connecting plug 6 under the action of the spring 10, thereby realizing the connection of multiple plunger hydraulic motors 2.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A plunger-type hydraulic synchronous shunt motor, comprising a plurality of plunger-type hydraulic motors (1), wherein one end of the plunger-type hydraulic motor (1) is provided with a spline shaft (2), and the other end of the plunger-type hydraulic motor (1) is provided with a spline groove (4), wherein the plurality of plunger-type hydraulic motors (1) are sequentially connected in series via the spline shaft (2) and the spline groove (4), and the outer sides of the two outermost plunger-type hydraulic motors (1) are provided with oil pans, and an oil pipeline is connected between the oil pans, characterized in that: The plunger type hydraulic motor (1) is provided with an annular groove (3) on a side close to the spline shaft (2), a connecting groove (301) is provided on the inner wall of the annular groove (3), a sliding groove (11) is provided on the side wall of the connecting groove (301), a slider (9) is slidably connected inside the sliding groove (11), a movable roller (8) is provided between the sliders (9), a limiting roller (7) is provided directly above the movable roller (8), a spring (10) is provided between the upper and lower ends of the slider (9) and the inner wall of the sliding groove (11), a convex ring (5) is extended on the side close to the spline groove (4) of the plunger type hydraulic motor (1), and a connecting plug (6) is fixed on the side of the convex ring (5).

2. The plunger type hydraulic synchronous split flow motor according to claim 1, characterized in that: The end of the connecting plug (6) is configured as a curved surface (601).

3. The plunger type hydraulic synchronous split flow motor according to claim 1, characterized in that: Both ends of the limiting roller (7) are rotatably connected to the side walls of the connecting groove (301), and both ends of the movable roller (8) are rotatably connected to the slider (9).

4. The plunger type hydraulic synchronous split flow motor according to claim 1, characterized in that: The connecting plug (6) and the connecting slot (301) are both provided in plurality.

5. The plunger type hydraulic synchronous split flow motor according to claim 4, characterized in that: The connecting plugs (6) and the connecting slots (301) are distributed in a circular array.

6. The plunger type hydraulic synchronous split flow motor according to claim 1, characterized in that: An anti-slip rubber ring is embedded between the convex ring (5) and the annular groove (3).

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