一种双变量柱塞泵马达

Abstract

一种双变量柱塞泵马达。解决了现有系统中变量泵和变量马达通常是两个产品，且相互独立动作控制的问题。它包括壳体，所述的壳体上设有容置腔，还包括：输入轴；第一柱塞组件；第一变量组件，所述的第一变量组件包括第一变量缸和第一斜盘；输出轴，所述的输出轴与输入轴错位设置；第二柱塞组件，设于壳体内并与第一柱塞组件共用容置腔；第二变量组件，所述的第二变量组件包括第二变量缸和第二斜盘；第一补油泵组件，由输入轴带动转动，用于启动时为油道补油；所述的第一补油泵组件分别与第一变量缸、第二变量缸相连并用于驱动第一变量缸动作和 / 或第二变量缸动作。本实用新型具有结构简单，装配方便，动作可靠，使用寿命长等优点。

Claims

1. A bivariate plunger pump motor comprising a housing (1) provided with a receiving cavity (2), characterized in that: Also includes: Input shaft (31) is inserted into housing (1); The first plunger assembly (32) is located in the accommodating cavity (2). The first plunger assembly (32) includes a first cylinder (321) and a first plunger (322). The input shaft (31) drives the first cylinder (321) to rotate and realizes oil suction and discharge through the first plunger (322). The first variable component (33) includes a first variable cylinder (331) and a first swashplate (332), wherein the first plunger (322) abuts against the first swashplate (332); the first variable cylinder (331) is connected to the first swashplate (332) and the oil intake and discharge volume are controlled by the swing of the first swashplate (332); An output shaft (41) extends from inside the housing (1); the output shaft (41) is offset from the input shaft (31); The second plunger assembly (42) is located inside the housing (1) and shares the receiving cavity (2) with the first plunger assembly (32); the second plunger assembly (42) includes a second cylinder (421) and a second plunger (422); the second plunger (422) draws in and discharges oil by moving relative to the second cylinder (421); the second cylinder (421) is connected to the output shaft (41) and is used to drive the output shaft (41) to rotate; The second variable component (43) includes a second variable cylinder (431) and a second swashplate (432), wherein the second plunger (422) abuts against the second swashplate (432); the second variable cylinder (431) is connected to the second swashplate (432) and controls the oil intake and discharge through the swing of the second swashplate (432) to control the rotation speed of the output shaft (41); The first oil replenishing pump assembly (5) is driven to rotate by the input shaft (31) and is used to replenish oil to the oil passage (16) during startup; the first oil replenishing pump assembly (5) is connected to the first variable cylinder (331) and the second variable cylinder (431) respectively and is used to drive the first variable cylinder (331) to move and / or the second variable cylinder (431) to move.

2. A dual variable piston pump motor according to claim 1, characterized in that When the first oil replenishing pump assembly (5) is started, it replenishes oil to the first cylinder (321) and the second cylinder (421) through the oil passage (16) inside the housing (1). The first oil replenishing pump assembly (5) drives the first swashplate (332) and the second swashplate (432) to move through the first variable cylinder (331) and the second variable cylinder (431), respectively, thereby causing the displacement of the corresponding first plunger assembly (32) and the second plunger assembly (42) to change.

3. A dual variable piston pump motor according to claim 1, characterized in that The first oil replenishment pump assembly (5) includes an internal tooth (51) and an external tooth (52). The input shaft (31) is connected to the internal tooth (51) and is used to drive the internal tooth (51) to rotate. The internal tooth (51) drives the external tooth (52) to rotate to achieve oil suction and oil discharge.

4. A dual variable piston pump motor according to claim 3, characterized in that The internal teeth (51) are concentrically arranged with the input shaft (31), and the external teeth (52) are eccentrically arranged with the internal teeth (51).

5. A dual variable piston pump motor according to claim 1, characterized in that The first oil replenishment pump assembly (5) is mounted on the input shaft (31) and is driven to rotate by the input shaft (31). The first oil replenishment pump assembly (5) is mounted on the input shaft (31) on the other side of the first swashplate (332) opposite to the first cylinder block (321).

6. A dual variable piston pump motor according to claim 1, characterized in that It also includes a second oil replenishment pump assembly (6), which is driven to rotate by the input shaft (31) to achieve oil suction and discharge, and is used to supply oil to the external brake.

7. A dual variable piston pump motor according to claim 1, characterized in that It also includes a filter element (7), through which the pressure oil of the first oil replenishment pump assembly (5) is input to the first variable cylinder (331) and the second variable cylinder (431) for variable control.

8. A dual variable piston pump motor according to claim 1, characterized in that It also includes an external control oil pipe (81), one end of which is connected to a connector (82) and the other end is connected to a second variable cylinder (431). The first replenishing oil pump assembly (5) is connected to the second variable cylinder (431) through the connector (82) and the external control oil pipe (81) for replenishing oil control of the second variable cylinder (431).

9. A dual-variable piston pump motor according to claim 8, characterized in that... It also includes a ferrule (83), which is designed with one end contracted and the other end open, through which the external control oil pipe (81) passes; the ferrule (83) also includes a conical surface (831) and a locking surface (832); the conical surface (831) is inserted into the connector (82) and contracts to clamp the external control oil pipe (81); the connector (82) is provided with a locking nut (84), which cooperates with the locking surface (832) of the ferrule (83) to lock the external control oil pipe (81).

10. A dual variable piston pump motor according to claim 1, characterized in that Also includes: The oil replenishment overflow valve (11) is located between the first oil replenishment pump assembly (5) and the first variable cylinder (331); The high-pressure relief valve (12) is used for high-pressure oil return in the housing; the opening pressure of the high-pressure relief valve (12) is greater than the opening pressure of the oil replenishment relief valve (11); The first oil replenishing pump assembly (5) replenishes oil to the oil passage (16) inside the housing (1) through the oil replenishing check valve (13) when it starts up; The first control valve (14) is connected to the first variable cylinder (331) through the first control valve (14) to drive the first variable cylinder (331) to move; The second control valve (15) is used to connect the first oil replenishment pump assembly (5) to the second variable cylinder (431) to drive the first variable cylinder (331) to move; the second control valve (15) is an electromagnetic directional valve.

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