Novel tilt cylinder mechanism for hydraulic motor

Abstract

The utility model provides a novel tilt cylinder mechanism for a hydraulic motor, which relates to the technical field of hydraulic motor facilities and comprises a tilt cylinder shell, a connecting shaft rotatably connected to the front end of the tilt cylinder shell, a support plate fixed on the inner wall of the tilt cylinder shell, a cone wheel shaft rotatably connected to the surface of the support plate, and a controllable motor arranged outside the surface of the cone wheel shaft. An arc-shaped limiting plate is fixed to the inner wall of the tilt cylinder shell, an arc-shaped sliding block is slidably connected to the inner wall of the arc-shaped limiting plate, a moving block is rotatably connected to the surface of the arc-shaped sliding block, and the moving block is in threaded connection with the driven rod; the controllable motor is controlled to rotate, so that the position of the connecting plate in the arc-shaped limiting plate is adjusted, the compression ratio of the volume cavity is adjusted, and the volume of the hydraulic motor is changed.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic motor facilities, in particular to a novel swing cylinder mechanism for a hydraulic motor. Background Art

[0002] A new type of oscillating cylinder for hydraulic motors is a device that converts mechanical energy into hydraulic energy. The oscillating cylinder functions in a hydraulic pump similarly to the piston in a reciprocating pump. Its reciprocating motion, or oscillation, draws in and out hydraulic oil, generating pressurized oil that drives the actuators in the hydraulic system. A hydraulic motor is an actuator in a hydraulic system, converting the fluid pressure energy provided by the hydraulic pump into mechanical energy (torque and speed) for its output shaft. It is widely used in injection molding machinery, ships, hoists, engineering machinery, construction machinery, coal mining machinery, mining machinery, metallurgical machinery, marine machinery, petrochemical industry, and port machinery.

[0003] In the existing technology, hydraulic swing cylinders usually adopt a constant volume cylinder design. The design of a constant volume cylinder means that the volume of the swing cylinder does not change over time, which limits the ability to adjust the speed of the hydraulic motor by changing the volume. Since the speed cannot be adjusted, the hydraulic motor may not be suitable for application scenarios that require variable speed, reducing its flexibility in diversified applications. When faced with different load conditions, the constant volume cylinder may not provide sufficient adjustment capabilities to adapt to load changes, affecting the performance and efficiency of the system. The constant volume cylinder may not be able to utilize hydraulic energy most effectively, resulting in energy waste and reduced efficiency. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a new type of swing cylinder mechanism for a hydraulic motor.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a new type of rocking cylinder mechanism for a hydraulic motor, comprising a rocking cylinder housing, the front end of the rocking cylinder housing is rotatably connected to a connecting shaft, a support plate is fixed to the inner wall of the rocking cylinder housing, the surface of the support plate is rotatably connected to a cone wheel shaft, a controllable motor is provided on the surface of the cone wheel shaft, the surface of the support plate is rotatably linked to an angler, the surface of the angler is rotatably connected to a driven rod, the driven rod is meshed with the cone wheel shaft, an arc-shaped limit plate is fixed to the inner wall of the rocking cylinder housing, and the inner wall of the arc-shaped limit plate The sliding connection is provided with an arc-shaped slider, the surface of the arc-shaped slider is rotatably connected to a moving block, the moving block is threadedly connected to the driven rod, the surface of the moving block is rotatably connected to a connecting plate, the surface of the connecting plate is rotatably linked to a piston rod, the surface of the piston rod is rotatably connected to a coupling arm, the surface of the coupling arm is rotatably connected to a cam, the surface of the cam is fixed with an output shaft, the surface of the cam is rotatably connected to a fixed block, the fixed block is fixedly connected to the swing cylinder housing, the fixed block is rotatably connected to the output shaft, in the prior art, a hydraulic swing cylinder usually adopts a constant volume cylinder The design of the constant volume cylinder means that the volume of the swing cylinder does not change over time, which limits the ability to adjust the speed of the hydraulic motor by changing the volume. Since the speed cannot be adjusted, the hydraulic motor may not be suitable for application scenarios that require variable speed, reducing its flexibility in diversified applications. When facing different load conditions, the constant volume cylinder may not provide sufficient adjustment capability to adapt to load changes, affecting the performance and efficiency of the system. The constant volume cylinder may not be able to make the most effective use of hydraulic energy, resulting in energy waste and reduced efficiency. To address such problems, when the staff needs to adjust the volume chamber of the plunger in the swing cylinder, the utility model operates the controllable motor to rotate, thereby driving the bevel gear shaft to drive the driven rod to rotate, so that the sliding block moves along the thread, thereby adjusting the position of the connecting plate in the arc limit plate, so that the rotation angle of the coupling arm is lowered, so that when the external motor drives the cam to rotate, the limit value of the inward and outward movement of the coupling arm driving the piston changes, thereby adjusting the compression ratio of the volume chamber, so that the volume of the hydraulic motor changes, thereby improving the practicality of the hydraulic motor and improving the motor efficiency.

[0006] Preferably, the surface of the swing cylinder shell is connected to an oil inlet pipe, the upper end of the oil inlet pipe is threadedly connected to the outer wall of the pipe, the outer wall and inner wall of the pipe are fixed with a fixed base, the front end of the fixed base is fixed with a frustum, a push spring is fixed to the surface of the fixed base, and a rubber plug is fixed to the front end of the push spring, the interior of the outer wall of the pipe is connected to an oil inlet, the surface of the oil inlet is threadedly connected with a sealing nut, the bottom of the outer wall of the pipe is connected to an oil outlet, the oil outlet is threadedly connected to the oil inlet pipe, and the surface of the swing cylinder shell is connected to an oil outlet pipe. In the prior art, under high pressure, oil may flow back from the high-pressure area to the low-pressure area. This reflux phenomenon will cause unstable pressure in the volume chamber, and unstable pressure in the volume chamber will directly affect the operation of the hydraulic motor. State, may cause the motor speed to drop, affecting the performance and response speed of the system. The speed drop and slow system response will reduce the overall production efficiency, increase production costs, and affect the competitiveness of the enterprise. To solve this problem, the utility model adopts the method of installing a safety device on the oil inlet pipe. The staff connects the oil inlet end and pushes the rubber plug forward during oil delivery to accumulate the elastic force of the push spring until it reaches the front end of the cone, causing the rubber plug to shrink inward, thereby allowing the oil to enter the interior of the pipeline. At the same time, if the pressure inside the volume chamber is too high and it needs to flow back, the push spring will be used to push the rubber plug along the inner wall of the pipeline until it blocks the oil inlet. The internal oil continues to exert pressure, and the rubber plug expands to make it more closed, thereby reducing the oil reflux and making the speed of the hydraulic motor more uniform and constant.

[0007] Preferably, a heat dissipation groove is provided on the surface of the swing cylinder shell, thereby preventing heat accumulation inside the swing cylinder from causing damage to parts.

[0008] Preferably, the push spring adopts a double-strand spring. The design of the double-strand spring makes it more stable than a single-strand spring when bearing load, because the two spiral coils can support each other, reducing twisting and deflection, thereby increasing the stability of the spring mechanism and improving the service life of the device.

[0009] Preferably, a rubber ring is provided inside the sealing nut, thereby further improving the sealing ability of the oil pipeline and preventing oil leakage.

[0010] Preferably, the slope of the rubber plug is greater than the slope of the frustum, thereby making it easier for the rubber plug to fit and for the oil to enter.

[0011] Preferably, the arc-shaped slider and the arc-shaped limiting plate are concentric circles, thereby further improving the sliding smoothness of the arc-shaped slider inside the arc-shaped limiting block.

[0012] Beneficial effects

[0013] 1. In the prior art, hydraulic swing cylinders generally adopt a constant volume cylinder design. The constant volume cylinder design means that the volume of the swing cylinder does not change over time, which limits the ability to adjust the speed of the hydraulic motor by changing the volume. Due to the inability to adjust the speed, the hydraulic motor may not be suitable for application scenarios requiring variable speed, reducing its flexibility in diversified applications. When facing different load conditions, the constant volume cylinder may not provide sufficient adjustment capability to adapt to load changes, affecting the performance and efficiency of the system. The constant volume cylinder may not make the most effective use of hydraulic energy, resulting in energy waste and reduced efficiency. To address such problems, the present utility model operates the controllable motor to rotate when the staff needs to adjust the volume chamber of the plunger in the swing cylinder, thereby driving the bevel gear shaft to drive the driven rod to rotate, so that the sliding block moves along the thread, thereby adjusting the position of the connecting plate in the arc limit plate, thereby reducing the rotation angle of the coupling arm. When the external motor drives the cam to rotate, the limit value of the inward and outward movement of the piston driven by the coupling arm changes, thereby adjusting the compression ratio of the volume chamber, thereby changing the volume of the hydraulic motor, improving the practicality of the hydraulic motor and improving the motor efficiency.

[0014] 2. In the prior art, under high pressure, oil may flow back from the high-pressure area to the low-pressure area. This backflow phenomenon will cause the pressure in the volume chamber to be unstable. The unstable pressure in the volume chamber will directly affect the working state of the hydraulic motor, which may cause the motor speed to drop, affecting the performance and response speed of the system. The speed drop and slow system response will reduce the overall production efficiency, increase production costs, and affect the competitiveness of the enterprise. To address this problem, the utility model adopts a safety device installed in the oil inlet pipe. The staff connects the oil inlet end and pushes the rubber plug forward during oil delivery, so that the elastic force of the push spring accumulates until it reaches the front end of the cone, causing the rubber plug to retract, thereby allowing the oil to enter the interior of the pipeline. At the same time, if the pressure inside the volume chamber is too high and it needs to flow back, the push spring will use the rubber plug to move along the inner wall of the pipeline until it blocks the oil inlet. The internal oil continues to exert pressure, and the rubber plug expands to make it more sealed, thereby reducing the oil backflow and making the speed of the hydraulic motor more uniform and constant. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the speed change mechanism structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the safety pipeline structure of the utility model.

[0019] Legend:

[0020] 1, swing cylinder shell; 101, support plate; 102, bevel gear shaft; 103, corner; 104, driven rod; 105, arc limit plate; 106, arc slider; 107, moving block; 108, connecting plate; 109, piston rod; 110, shaft arm; 111, cam; 112, fixed block; 113, output shaft; 2, oil inlet pipe; 201, pipe outer wall; 202, fixed base; 203, push spring; 204, rubber plug; 205, sealing nut; 206, oil outlet; 3, oil outlet pipe; 4, connecting shaft. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] The specific embodiments of the utility model are described below in combination with the drawings. Specific embodiments:

[0024] Reference Figure 1-4A new type of swing cylinder mechanism for a hydraulic motor includes a swing cylinder housing 1, the front end of the swing cylinder housing 1 is rotatably connected to a connecting shaft 4, a support plate 101 is fixed to the inner wall of the swing cylinder housing 1, the surface of the support plate 101 is rotatably connected to a cone wheel shaft 102, a controllable motor is provided on the surface of the cone wheel shaft 102, the surface of the support plate 101 is rotatably connected to an angler 103, the surface of the angler 103 is rotatably connected to a driven rod 104, the driven rod 104 is meshed with the cone wheel shaft 102, an arc-shaped limiting plate 105 is fixed to the inner wall of the swing cylinder housing 1, and an arc-shaped slider 106 is slidably connected to the inner wall of the arc-shaped limiting plate 105. The surface of the slider 106 is rotatably connected to a moving block 107, and the moving block 107 is threadedly connected to the driven rod 104. The surface of the moving block 107 is rotatably connected to a connecting plate 108, and the surface of the connecting plate 108 is rotatably linked to a piston rod 109. The surface of the piston rod 109 is rotatably connected to a coupling arm 110, and the surface of the coupling arm 110 is rotatably connected to a cam 111. The surface of the cam 111 is fixed with an output shaft 113, and the surface of the cam 111 is rotatably connected to a fixed block 112. The fixed block 112 is fixedly connected to the swing cylinder housing 1, and the fixed block 112 is rotatably connected to the output shaft 113. In the prior art, the hydraulic swing The cylinder usually adopts the design of constant volume cylinder. The design of constant volume cylinder means that the volume of the swing cylinder does not change with time, which limits the ability to adjust the speed of the hydraulic motor by changing the volume. Since the speed cannot be adjusted, the hydraulic motor may not be suitable for application scenarios that require variable speed, reducing its flexibility in diversified applications. When facing different load conditions, the constant volume cylinder may not provide sufficient adjustment ability to adapt to load changes, affecting the performance and efficiency of the system. The constant volume cylinder may not make the most effective use of hydraulic energy, resulting in energy waste and reduced efficiency. To address such problems, this paper When the staff needs to adjust the volume chamber of the plunger in the swing cylinder, they operate the controllable motor to rotate, thereby driving the bevel gear shaft 102 to drive the driven rod 104 to rotate, so that the sliding block moves along the thread, thereby adjusting the position of the connecting plate 108 in the arc-shaped limit plate 105, so that the rotation angle of the coupling arm 110 is lowered, and when the external motor drives the cam 111 to rotate, the limit value of the inward and outward movement of the piston driven by the coupling arm 110 changes, thereby adjusting the compression ratio of the volume chamber, thereby changing the volume of the hydraulic motor, improving the practicality of the hydraulic motor, and improving the motor efficiency.

[0025] The surface of the swing cylinder housing 1 is connected to an oil inlet pipe 2, the upper end of the oil inlet pipe 2 is threadedly connected to the outer wall of the pipe 201, a fixed base 202 is fixed to the inner wall of the outer wall 201 of the pipe, a frustum is fixed to the front end of the fixed base 202, a push spring 203 is fixed to the surface of the fixed base 202, a rubber plug 204 is fixed to the front end of the push spring 203, the interior of the outer wall 201 of the pipe is connected to an oil inlet, a sealing nut 205 is threadedly connected to the surface of the oil inlet, the bottom of the outer wall 201 of the pipe is connected to an oil outlet 206, the oil outlet 206 is threadedly connected to the oil inlet pipe 2, the surface of the swing cylinder housing 1 is connected to an oil outlet pipe 3, a heat dissipation groove is provided on the surface of the swing cylinder housing 1, the push spring 203 adopts a double-strand spring, a rubber ring is provided inside the sealing nut 205, the inclination of the rubber plug 204 is greater than the inclination of the frustum, and the arc-shaped slider 106 and the arc-shaped limit plate 105 are concentric circles.

[0026] The working principle of the present utility model is as follows: when the staff needs to adjust the volume chamber of the plunger in the swing cylinder, the controllable motor is operated to rotate, thereby driving the bevel gear shaft 102 to drive the driven rod 104 to rotate, so that the sliding block moves along the thread, thereby adjusting the position of the connecting plate 108 in the arc-shaped limit plate 105, so that the rotation angle of the coupling arm 110 is lowered, and when the external motor drives the cam 111 to rotate, the limit value of the inward and outward movement of the piston driven by the coupling arm 110 changes, thereby adjusting the compression ratio of the volume chamber, thereby changing the volume of the hydraulic motor.

[0027] 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.

[0028] 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 novel swing cylinder mechanism for a hydraulic motor, comprising a swing cylinder housing (1), wherein the front end of the swing cylinder housing (1) is rotatably connected to a connecting shaft (4), and characterized in that: A support plate (101) is fixed to the inner wall of the swing cylinder housing (1), and a conical wheel shaft (102) is rotatably connected to the surface of the support plate (101), and a controllable motor is provided on the surface of the conical wheel shaft (102). A goniometer (103) is rotatably connected to the surface of the goniometer (103), and a driven rod (104) is rotatably connected to the surface of the goniometer (103). The driven rod (104) is meshed with the conical wheel shaft (102). An arc-shaped limiting plate (105) is fixed to the inner wall of the swing cylinder housing (1), and an arc-shaped slider (106) is slidably connected to the inner wall of the arc-shaped limiting plate (105). A moving block (107) is rotatably connected to the surface of the arc-shaped slider (106). ), the moving block (107) is threadedly connected to the driven rod (104), the surface of the moving block (107) is rotatably connected to a connecting plate (108), the surface of the connecting plate (108) is rotatably linked to a piston rod (109), the surface of the piston rod (109) is rotatably connected to a coupling arm (110), the surface of the coupling arm (110) is rotatably connected to a cam (111), the surface of the cam (111) is fixed with an output shaft (113), the surface of the cam (111) is rotatably connected to a fixed block (112), the fixed block (112) is fixedly connected to the swing cylinder housing (1), and the fixed block (112) is rotatably connected to the output shaft (113).

2. The novel swing cylinder mechanism for a hydraulic motor according to claim 1, characterized in that: The surface of the swing cylinder housing (1) is connected to an oil inlet pipe (2), the upper end of the oil inlet pipe (2) is threadedly connected to the outer wall of the pipe (201), a fixed base (202) is fixed to the inner wall of the outer wall of the pipe (201), a frustum is fixed to the front end of the fixed base (202), a push spring (203) is fixed to the surface of the fixed base (202), a rubber plug (204) is fixed to the front end of the push spring (203), the interior of the outer wall of the pipe (201) is connected to an oil inlet, the surface of the oil inlet is threadedly connected to a sealing nut (205), the bottom of the outer wall of the pipe (201) is connected to an oil outlet (206), the oil outlet (206) is threadedly connected to the oil inlet pipe (2), and the surface of the swing cylinder housing (1) is connected to an oil outlet pipe (3).

3. The novel swing cylinder mechanism for a hydraulic motor according to claim 1, characterized in that: A heat dissipation groove is provided on the surface of the swing cylinder housing (1).

4. The novel swing cylinder mechanism for a hydraulic motor according to claim 2, characterized in that: The pushing spring (203) is a double-strand spring.

5. The novel swing cylinder mechanism for a hydraulic motor according to claim 2, characterized in that: A rubber ring is provided inside the sealing nut (205).

6. The novel swing cylinder mechanism for a hydraulic motor according to claim 2, characterized in that: The slope of the rubber plug (204) is greater than the slope of the frustum.

7. The novel swing cylinder mechanism for a hydraulic motor according to claim 1, characterized in that: The arc-shaped sliding block (106) and the arc-shaped limiting plate (105) are concentric circles.

Images