Flow adjusting device of variable displacement piston pump

Abstract

The utility model discloses a variable plunger pump flow adjusting device which comprises a plunger pump shell, the plunger pump shell is rectangular, a motor is arranged at the left end in the plunger pump shell, a rotating rod is arranged at the right end of the motor, the motor controls the rotating rod to rotate, the upper end and the lower end of the motor are fixedly connected with moving blocks, and the moving blocks are in gear connection with fixing blocks. The fixed block is flat, a gear rack is arranged in the fixed block, the gear rack is parallel to the fixed block, a moving motor is arranged at the bottom end in the moving block, a gear is arranged at the bottom end of the moving motor, the gear is perpendicular to the gear rack, and the gear is connected with the gear rack; according to the plunger pump flow adjusting device, the moving block is designed, the rotating rod is driven to move through movement of the moving block, then the swash plate is driven to move, and therefore the plunger pump flow adjusting device can adjust plunger pump flow.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic plungers, in particular to a flow regulating device for a variable plunger pump. Background Art

[0002] At present, axial piston pumps are widely used in hydraulic systems of engineering machinery, engineering vehicles, agricultural machinery, etc., which need to provide high power and pressure, have frequent speed changes, and have harsh working conditions. However, the original fixed-displacement axial piston pump has a narrow application range; and the original variable-displacement axial piston pump is inconvenient to use due to frequent adjustment and operation, and is prone to failure, and cannot meet the needs of the market.

[0003] Existing variable displacement piston pumps are prone to low or no pressure during use, mostly due to insufficient flow. If not handled, it will cause unnecessary economic losses and easily lead to damage to the device.

[0004] Therefore, it is necessary to provide a variable piston pump flow regulating device to solve the above technical problems. Utility Model Content

[0005] In order to overcome the structural defects of the prior art mentioned above, the utility model provides a variable piston pump flow regulating device.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a variable piston pump flow regulating device, including a piston pump housing, characterized in that: the piston pump housing is rectangular, and a motor is provided at the left end inside, a rotating rod is provided at the right end of the motor, and the motor controls the rotation of the rotating rod, the upper and lower ends of the motor are fixedly connected to a moving block, the moving block gear is connected to a fixed block, the fixed block is flat, and a gear bar is provided inside, the gear bar is parallel to the fixed block, a moving motor is provided at the bottom end of the moving block, a gear is provided at the bottom end of the moving motor, the gear is perpendicular to the gear bar, and the gear is connected to the gear bar.

[0007] Preferably, a swash plate is provided at the right end of the rotating rod, and the swash plate can be tilted based on the connection of the rotating rod. The swash plate includes an outer ring, and the outer ring wraps the rotating disk. The rotating disk is provided with a plurality of plunger assemblies.

[0008] Preferably, the right end of the moving block is fixedly connected to the motor push rod, the motor push rod is perpendicular to the moving block, and a connecting block is provided at the top of the motor push rod, the connecting block is fixedly connected to the upper and lower ends of the outer ring, and the connecting block can rotate based on the connection with the motor push rod.

[0009] Preferably, a cylinder body is provided at the right end of the plunger assembly, the cylinder body is cylindrical, and a plurality of plunger grooves are provided in the cylinder body, and an oil distribution plate is provided at the right end of the cylinder body.

[0010] Preferably, the outer ring is in the shape of a circular ring, and the turntable is a circular flat plate.

[0011] Preferably, an oil pipe is provided at the right end of the cylinder body, the cylinder body is connected to the oil pipe, and the oil pipe passes through the plunger pump housing.

[0012] Compared with the prior art, the utility model can achieve the following beneficial effects: when in use, the moving block is controlled to move left and right by controlling the working of the moving motor, thereby driving the motor to move, and then driving the rotating rod to move, and finally the space formed by the cylinder body and the blocking assembly can be controlled, thereby realizing the flow regulation of the variable piston pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a partial schematic diagram of the utility model;

[0014] Figure 2 This is a partial schematic diagram of the utility model after the moving block moves;

[0015] Figure 3 A large drawing is issued for this utility model;

[0016] Figure 4 This is a schematic diagram of the swash plate of the utility model;

[0017] Figure 5 This is a schematic diagram of the bottom of the cylinder body of the utility model;

[0018] Among them: 1. plunger pump housing; 2. motor; 3. rotating rod; 4. moving block; 5. fixed block; 6. gear bar; 7. moving motor; 8. gear; 9. swash plate; 10. outer ring; 11. turntable; 12. plunger assembly; 13. motor push rod; 14. connecting block; 15. cylinder body; 16. plunger groove; 17. oil distribution plate; 18. oil pipe; DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0022] Embodiment:

[0023] As shown in the figure, the utility model provides a variable piston pump flow regulating device, including a piston pump housing 1, characterized in that: the piston pump housing 1 is rectangular, and a motor 2 is provided at the left end inside, a rotating rod 3 is provided at the right end of the motor 2, and the motor 2 controls the rotation of the rotating rod 3, the upper and lower ends of the motor 2 are fixedly connected to a moving block 4, the moving block 4 is gear-connected to a fixed block 5, the fixed block 5 is flat, and a gear bar 6 is provided inside, the gear bar 6 is parallel to the fixed block 5, a moving motor 7 is provided at the bottom end of the moving block 4, a gear 8 is provided at the bottom end of the moving motor 7, the gear 8 is perpendicular to the gear bar 6, and the gear 8 is connected to the gear bar 6.

[0024] Specifically, the moving motor 7 controls the gear 8 to move left and right on the gear bar 6, thereby driving the moving block 4 to move left and right.

[0025] In this embodiment, a swash plate 9 is provided at the right end of the rotating rod 3, and the swash plate 9 can be tilted based on the connection of the rotating rod 3. The swash plate 9 includes an outer ring 10, and the outer ring 10 wraps a rotating disk 11. The rotating disk 11 is provided with a plurality of plunger assemblies 12.

[0026] Specifically, the plunger assembly 12 is vertically connected to the turntable 11 , and the plunger assembly 12 is driven to rotate when the turntable 11 rotates.

[0027] In this embodiment, the right end of the moving block 4 is fixedly connected to the motor push rod 13, the motor push rod 13 is perpendicular to the moving block 4, and a connecting block 14 is provided at the top of the motor push rod 13, the connecting block 14 is fixedly connected to the upper and lower ends of the outer ring 10, and the connecting block 14 can rotate based on the connection with the motor push rod 13.

[0028] Specifically, the inclination angle of the swash plate 9 can be adjusted by controlling the motor push rod 13 to work.

[0029] In this embodiment, a cylinder body 15 is provided at the right end of the plunger assembly 12 . The cylinder body 15 is cylindrical and has a plurality of plunger grooves 16 disposed therein. An oil distribution plate 17 is provided at the right end of the cylinder body 15 .

[0030] Specifically, the position and size of the plunger groove 16 are consistent with the position and size of the plunger assembly 12.

[0031] In this embodiment, the outer ring 10 is an annular ring, and the turntable 11 is a circular flat plate.

[0032] Specifically, it is convenient for the swash plate 9 to be tilted and adjusted.

[0033] In this embodiment, an oil pipe 18 is disposed at the right end of the cylinder body 15 , the cylinder body 15 is connected to the oil pipe 18 , and the oil pipe 18 passes through the plunger pump housing 1 .

[0034] Specifically, the internal oil pipe 18 can be connected to the external oil pipe.

[0035] Working principle: During use, the oil pipe 18 is first connected, and then the tilt of the swash plate 9 is controlled by the motor push rod 13, and then the moving motor 7 is started to control the movement of the moving block 4, so as to adjust the space formed by the plunger assembly 12 and the cylinder body 15, and finally realize the flow regulation of the variable plunger pump.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A variable displacement piston pump flow regulating device, comprising a piston pump housing (1), characterized in that: The plunger pump housing (1) is rectangular, and a motor (2) is provided at the left end thereof; a rotating rod (3) is provided at the right end of the motor (2), and the motor (2) controls the rotation of the rotating rod (3); the upper and lower ends of the motor (2) are fixedly connected to a moving block (4); the moving block (4) is gear-connected to a fixed block (5); the fixed block (5) is flat, and a gear bar (6) is provided therein; the gear bar (6) is parallel to the fixed block (5); a moving motor (7) is provided at the bottom end thereof; a gear (8) is provided at the bottom end of the moving motor (7); the gear (8) is perpendicular to the gear bar (6), and the gear (8) is connected to the gear bar (6).

2. The variable piston pump flow regulating device according to claim 1, characterized in that: A swash plate (9) is provided at the right end of the rotating rod (3), and the swash plate (9) can be tilted based on the connection of the rotating rod (3). The swash plate (9) includes an outer ring (10), and the outer ring (10) wraps a rotating disk (11). A plurality of plunger assemblies (12) are provided on the rotating disk (11).

3. The variable piston pump flow regulating device according to claim 1, characterized in that: The right end of the moving block (4) is fixedly connected to a motor push rod (13), the motor push rod (13) is perpendicular to the moving block (4), and a connecting block (14) is provided at the top of the motor push rod (13), the connecting block (14) is fixedly connected to the upper and lower ends of the outer ring (10), and the connecting block (14) can rotate based on the connection with the motor push rod (13).

4. The variable piston pump flow regulating device according to claim 2, characterized in that: A cylinder body (15) is provided at the right end of the plunger assembly (12). The cylinder body (15) is cylindrical and has a plurality of plunger grooves (16) arranged therein. An oil distribution plate (17) is provided at the right end of the cylinder body (15).

5. The variable piston pump flow regulating device according to claim 2, characterized in that: The outer ring (10) is in the shape of a circular ring, and the rotating disk (11) is in the shape of a circular flat plate.

6. The variable piston pump flow regulating device according to claim 4, characterized in that: An oil pipe (18) is provided at the right end of the cylinder body (15), the cylinder body (15) is connected to the oil pipe (18), and the oil pipe (18) passes through the plunger pump housing (1).

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