Axial lateral curve multi-action plunger motor

Abstract

The invention relates to a hydraulic element, in particular to an axial lateral curve multi-action plunger motor which comprises cylinder bodies, plunger assemblies, a valve plate and an output shaft, the cylinder bodies are evenly distributed in the circumferential direction and axially arranged, the plunger assemblies and the valve plate are arranged on the two axial sides of the cylinder bodies respectively, the valve plate is provided with an oil inlet and an oil outlet, and the cylinder bodies are divided into two groups. The plunger assemblies of the two sets of cylinder bodies are oppositely arranged, a track disc is arranged between the plunger assemblies of the two sets of cylinder bodies, curve guide rails are arranged on the two sides of the track disc respectively, and valve plates are arranged on the outer sides of the two sets of cylinder bodies. The curve guide rail is arranged on the axial side of the guide rail disc, so that multiple reciprocating motion of the plunger in the axial direction is achieved, axial direction of the inner curve multi-action motor is achieved, the radial size of the motor is reduced, a radial compact structure is achieved, the size of the plunger can be further increased in the axial direction, displacement is increased, and the power-to-weight ratio of the motor is increased.

Description

Technical Field

[0001] The invention relates to a hydraulic element, in particular to an axial side curve multi-acting plunger motor. Background Art

[0002] The radial inner curve multi-acting piston motor is widely used in the fields of shipbuilding, industry, etc. due to its advantages of compactness, high efficiency, high and low speed stability, etc. At present, in order to ensure precise movement, reduce weight, and increase output torque, various fields require motors to improve stability and working pressure and reduce size.

[0003] The reasons for this phenomenon include: 1. The radial inner curve multi-action plunger motor has a large moment of inertia, which is prone to impact vibration during operation; 2. The radial piston motor needs to adopt a radial circumferential distribution of the plunger, so the required size is larger to ensure structural strength. 3. The unbalanced force on the guide curve of the radial piston motor limits its pressure increase. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an axial side curve multi-action plunger motor.

[0005] The technical solution adopted by the present invention is: an axial side curve multi-action piston motor, including a cylinder body, a plunger assembly, a distribution plate and an output shaft, the cylinder body is evenly distributed circumferentially and axially arranged, the axial sides of the cylinder body are respectively provided with a plunger assembly and a distribution plate, the distribution plate is provided with an oil inlet and an oil outlet, and its characteristics are: the cylinder body is divided into two groups, the plunger assemblies of the two groups of cylinder bodies are arranged oppositely, a track plate is provided between the plunger assemblies of the two groups of cylinder bodies, curved guide rails are respectively provided on both sides of the track plate, and the outer sides of the two groups of cylinder bodies are the distribution plates.

[0006] Furthermore, the plunger assembly includes a plunger and a steel ball, and two sides of the steel ball are respectively connected to the plunger and the curved guide rail ball pair.

[0007] Furthermore, the curved guide rails on both sides of the track plate are symmetrically arranged.

[0008] Furthermore, the curved guide rails on both sides of the track disk are staggered at 1 / 2 period of a single curve thereon.

[0009] Furthermore, the output shaft is rotatably connected to the cylinder body, and the output shaft is fixedly connected to the valve plate and the track plate.

[0010] Furthermore, the output shaft is provided with a first shoulder and a second shoulder, the first shoulder is arranged at the middle position, and the first shoulder is fixedly connected to the guide plate; the second shoulder is arranged on both sides of the first shoulder, and the second shoulder is fixedly connected to the distribution plates on both sides; a shaft seal is provided at the connection between the first shoulder and the second shoulder.

[0011] Furthermore, the output shaft is fixedly connected to the cylinder body, and the output shaft is connected to the distribution plate and the track plate bearing.

[0012] Furthermore, the output shaft is provided with a first shoulder and a second shoulder, the first shoulder is arranged in the middle position, and the first shoulder is connected to the track plate bearing; the second shoulder is arranged on both sides of the first shoulder, and the second shoulder and the shoulders are fixedly installed with a cylinder body and a bearing with a distribution plate from the inside to the outside, and a shaft seal is installed on the outside of the second shoulder.

[0013] The present invention has the following beneficial effects: 1. The present invention arranges the curved guide rail on the axial side of the guide rail disc, so as to realize multiple reciprocating motions of the plunger in the axial direction, realize the axialization of the inner curve multi-action motor, and then reduce the radial size of the motor, realize the radial compact structure, and can further increase the volume of the plunger in the axial direction to increase the displacement and improve the power-to-weight ratio of the motor.

[0014] 2. When the guide rail curves on both sides of the curved guide rail are completely symmetrical, the working conditions of the plungers on both sides are completely consistent, and the guide rail can achieve axial force balance, thereby increasing the working pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of Embodiment 1 of the present invention; Figure 2 This is a structural diagram of Embodiment 2 of the present invention; Figure 3 It is a schematic diagram of the structure of the track disk of the present invention; Figure 4 It is a schematic diagram of the expansion of the track interface of the track disk of the present invention.

[0016] In the figure, 1-cylinder body, 11-plunger hole, 12-plunger, 13-steel ball, 2-distribution plate, 3-track plate, 4-output shaft, 41-first shoulder, 42-second shoulder. DETAILED DESCRIPTION

[0017] Embodiment 1: like Figure 1 , 3As shown in Figures 4 and 5, an axial side curve multi-action piston motor comprises a track plate 3 arranged in the middle and a cylinder body 1 and a distribution plate 2 symmetrically arranged on both sides. Curved guide rails are symmetrically arranged on the end faces of the track plate 3. The cylinder body 1 is a disc structure, and a number of plunger holes 11 are evenly distributed on the cylinder body 1 with its axis as the center. The plunger hole 11 is arranged axially, wherein the outer opening of the plunger hole 11 is docked with the distribution plate 2, and the inner opening is provided with a plunger assembly, and the plunger assembly includes a plunger 12 and a steel ball 13. The plunger 12 is adapted to be installed in the plunger hole 11, and the steel ball 13 is arranged between the curved guide rail of the track plate 3 and the plunger 12. The steel ball 13 and the curved guide rail, and the steel ball 13 and the plunger 12 are all connected by ball pairs. The distribution plate 2 has an oil inlet on the outer end face and an oil return port on the outer peripheral face. The oil inlet and the oil return port are connected to the docking interface between the inner end face of the distribution plate 2 and the plunger 12 through their own oil channels.

[0018] The output shaft 4 passes through the distribution plates 2 on both sides, and is provided with a first shoulder 41 and a second shoulder 42. The first shoulder 41 is provided at the middle position, and the first shoulder 41 is connected to the guide plate 3 by a bearing; the second shoulder 42 is provided on both sides of the first shoulder 41, and the cylinder body 1 and the distribution plate 2 are fixedly installed on the second shoulder 42 in sequence from the inside to the outside from the end face of the first shoulder 41; and a shaft seal is installed on the outer end face of the second shoulder 42.

[0019] When the plunger motor is running, the distribution plate 2 is connected to the pressure oil and return oil pipeline, so that each plunger is alternately connected to the pressure oil and return oil pipeline, driving the plunger assembly to extend and retract, and making each plunger move circumferentially along the curved guide rail. Since the distribution plate, plunger plate and curved guide rail on both sides of the track plate 3 are symmetrically arranged, the plunger plates on both sides rotate synchronously on the hydraulic action line, thereby driving the output shaft to rotate steadily and output to the outside.

[0020] Embodiment 2: like Figure 2 , 3 As shown in Figures 4 and 5, an axial side curve multi-action piston motor comprises a track plate 3 arranged in the middle and a cylinder body 1 and a distribution plate 2 symmetrically arranged on both sides. Curved guide rails are symmetrically arranged on the end faces of both sides of the track plate 3. The cylinder body 1 is a disc structure, and a number of plunger holes 11 are evenly distributed on the cylinder body 1 with its axis as the center. The plunger hole 11 is arranged axially. Among them, the outer opening of the plunger hole 11 is connected to the distribution plate 2, and the inner opening is provided with a plunger assembly. The plunger assembly includes a plunger 12 and a steel ball 13. The plunger 12 is adapted to be installed in the plunger hole 11. The steel ball 13 is arranged between the curved guide rail of the track plate 3 and the plunger 12. The steel ball 13 and the curved guide rail, and the steel ball 13 and the plunger 12 are all connected by ball pairs. The outer end face of the distribution plate 2 is provided with an oil inlet, and the outer peripheral face is provided with an oil return port. The oil inlet and the oil return port are respectively connected to the docking interface between the inner end face of the distribution plate 2 and the plunger 12 through their own oil channels.

[0021] The output shaft 4 passes through the distribution plates on both sides, and is provided with a first shoulder 41 and a second shoulder 42, wherein the first shoulder 41 is arranged at the middle position, and the first shoulder 41 is fixedly connected to the guide plate 3; the second shoulder 42 is arranged on both sides of the first shoulder 41, and the second shoulder 42 is fixedly connected to the distribution plates on both sides; a shaft seal is provided at the connection between the first shoulder 41 and the second shoulder 42.

[0022] When the plunger motor is running, the distribution plate 2 is connected to the pressure oil and return oil pipeline, so that each plunger is alternately connected to the pressure oil and return oil pipeline, driving the plunger assembly to extend and retract, and making the track plate 3 and the distribution plate 2 move circumferentially along the curved guide rail. Since the distribution plate, plunger plate and the curved guide rails on both sides of the track plate are symmetrically arranged, the distribution plates on both sides rotate synchronously on the hydraulic action line, thereby driving the output shaft to rotate steadily and output to the outside.

[0023] Compared with the first embodiment, the rotating assembly in this embodiment only includes a track plate, an output shaft and a distribution plate, which can achieve rotational dynamic balance, reduce rotational inertia, and increase rotational speed and movement smoothness.

[0024] Furthermore, the curved guide rails of the end surface track disks on both sides of the track disk may include one or more curves, and the curved guide rails on both sides may be symmetrically arranged or staggered with 1 / 2 period of a single curve, so that the motor can obtain different output characteristics.

Claims

1. An axial side curve multi-action plunger motor, comprising a cylinder body, a plunger assembly, a valve plate and an output shaft, wherein the cylinder body is axially arranged and provided with plunger holes uniformly distributed in the circumferential direction, the axial sides of the cylinder body are respectively provided with a plunger assembly and a valve plate, and the valve plate is provided with an oil inlet and an oil outlet, wherein the characteristics are: The cylinder bodies are divided into two groups, the plunger assemblies of the two groups of cylinder bodies are arranged oppositely, a track plate is arranged between the plunger assemblies of the two groups of cylinder bodies, curved guide rails are arranged on both sides of the track plate, and the outer sides of the two groups of cylinder bodies are distribution plates.

2. The axial side curve multi-acting piston motor according to claim 1, characterized in that: The plunger assembly comprises a plunger and a steel ball, and two sides of the steel ball are respectively connected to the plunger and the curved guide rail ball pair.

3. The axial side curve multi-acting piston motor according to claim 1, characterized in that: The curved guide rails on both sides of the track plate are symmetrically arranged.

4. The axial side curve multi-acting piston motor according to claim 1 is characterized in that: The curved guide rails on both sides of the track disk are staggeredly arranged with a half period of a single curve thereon.

5. An axial side curve multi-acting piston motor according to any one of claims 1 to 4, characterized in that: The output shaft is rotatably connected to the cylinder body, and the output shaft is fixedly connected to the distribution plate and the track plate.

6. The axial side curve multi-acting piston motor according to claim 5, characterized in that: The output shaft is provided with a first shoulder and a second shoulder, the first shoulder is arranged at the middle position, and the first shoulder is fixedly connected to the guide plate; the second shoulder is arranged on both sides of the first shoulder, and the second shoulder is fixedly connected to the distribution plates on both sides; a shaft seal is provided at the connection between the first shoulder and the second shoulder.

7. An axial side curve multi-acting piston motor according to any one of claims 1 to 4, characterized in that: The output shaft is fixedly connected to the cylinder body, and the output shaft is connected to the distribution plate and the track plate bearing.

8. The axial side curve multi-acting piston motor according to claim 7, characterized in that: The output shaft is provided with a first shoulder and a second shoulder, the first shoulder is arranged in the middle position, and the first shoulder is connected to the track plate bearing; the second shoulder is arranged on both sides of the first shoulder, and the second shoulder and the shoulders are fixedly installed with a cylinder body and a distribution plate on the bearing from the inside to the outside, and a shaft seal is installed on the outside of the second shoulder.

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