Adjustable displacement gear oil pump

Abstract

The utility model discloses an adjustable displacement gear oil pump relates to gear oil pump technical field, including gear oil pump body, the upper outer wall of gear oil pump body is equipped with motor, the lower outer wall of gear oil pump body is equipped with the adjusting box, gear oil pump body includes pump shell, pump cover, oil inlet pipe, base, oil outlet pipe, mounting bracket, flow tank, fixed gear and movable gear, and oil inlet pipe and oil outlet pipe fixed communication in the outer wall of pump shell both sides respectively, and flow tank sets up in the inside of pump shell, and fixed gear rotationally connected in the inner wall of flow tank, the utility model discloses a eccentric wheel occurs deflection through the rotation adjusting lever control, thereby pulls the traction plate and moves down, and the movable gear is controlled with the traction plate synchronous and occurs the deviation, thereby changes the effective volume between the teeth when gear engagement, realizes the displacement regulation, thereby make the utility model discloses can conveniently according to the application scene dynamic regulation displacement, adapts to the demand of variable working condition, and the energy -conserving effect is remarkable, reduces the overflow loss.

Description

Technical Field

[0001] This utility model relates to the field of gear oil pump technology, and in particular to an adjustable displacement gear oil pump. Background Technology

[0002] As a commonly used power component in hydraulic systems, gear oil pumps work by converting mechanical energy into hydraulic energy through the meshing motion of the driving gear and the driven gear, thereby realizing the delivery of liquid and the establishment of pressure. Traditional gear oil pumps are usually of fixed displacement structure, that is, the pump displacement is fixed by geometric parameters such as gear module, number of teeth and width. When the input speed is constant, the output flow rate is basically constant.

[0003] In the prior art, such as the gear oil pump disclosed in CN222702126U, the gear oil pump includes an intermediate housing with an inner cavity, a driving gear disposed in the inner cavity, a driven gear disposed in the inner cavity and meshing with the driving gear, a front housing connected to the front end of the intermediate housing, and a rear housing connected to the rear end of the intermediate housing. The intermediate housing is also provided with an oil inlet and an oil outlet. Both the driving gear and the driven gear are helical gears. At least one of the surfaces opposite to the intermediate housing and the front housing is provided with a sealing groove, and at least one of the surfaces opposite to the intermediate housing and the rear housing is provided with a sealing groove. Each sealing groove is provided with a sealing ring.

[0004] However, in actual use, when the system requires variable flow conditions such as different operating stages of construction machinery or changes in the load of the hydraulic system, the fixed displacement gear pump cannot directly adjust the output flow. It usually needs to be indirectly adjusted by bypassing the relief valve or by combining multiple pumps. The former will cause excess flow to overflow through the relief valve, resulting in energy waste and system heat generation; the latter will increase the complexity and cost of the system. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that when the system requires variable flow conditions, such as different operating stages of construction machinery or changes in the load of the hydraulic system, the fixed displacement gear pump cannot directly adjust the output flow. Therefore, an adjustable displacement gear oil pump is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable displacement gear oil pump, comprising a gear oil pump body, a motor mounted on the upper outer wall of the gear oil pump body, and an adjustment box mounted on the lower outer wall of the gear oil pump body. The gear oil pump body includes a pump housing, a pump cover, an oil inlet pipe, a base, an oil outlet pipe, a mounting bracket, a flow groove, a fixed gear, and a moving gear. The oil inlet pipe and the oil outlet pipe are respectively fixedly connected to the outer walls of both sides of the pump housing. The flow groove is located inside the pump housing. The fixed gear is rotatably connected to the inner wall of the flow groove, and the moving gear is meshed with the bottom of the fixed gear. A movable groove is opened inside the adjustment box. An eccentric wheel is rotatably connected to the inner wall of the movable groove. A traction plate is movably connected to the top of the eccentric wheel. The moving gear is rotatably connected to the upper outer wall of the traction plate. An adjustment rod is rotatably connected through the outer wall of the adjustment box, and the eccentric wheel is fixedly sleeved on the outer wall of the adjustment rod.

[0007] Preferably, the pump cover is fixedly connected to the outer wall of the pump casing, and the base is fixedly connected to the bottom surface of the pump casing.

[0008] Preferably, the mounting bracket is fixedly connected to the upper outer wall of the pump casing, the motor is fixedly mounted on the outer wall of the mounting bracket, and the shaft end of the fixed gear passes through the inner wall of the mounting bracket and is fixedly connected to the output shaft end of the motor.

[0009] Preferably, a traction ring plate is fixedly connected to the outer wall of the movable groove, and a connecting groove is opened on the bottom surface of the traction plate, with the traction ring plate connected to the inner wall of the connecting groove.

[0010] Preferably, the traction plate is movably connected to the inner wall of the movable groove.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, the eccentric wheel is deflected by rotating the adjusting rod, thereby pulling the traction plate down and controlling the moving gear to deflect synchronously with the traction plate, thereby changing the effective volume between the teeth when the gears mesh, realizing displacement adjustment. This allows the utility model to conveniently and dynamically adjust the displacement according to the application scenario, adapt to the needs of changing working conditions, and has significant energy-saving effect, reducing overflow loss.

[0013] 2. In this utility model, the oil inlet pipe and the oil outlet pipe are connected to the external pipeline respectively. The fixed gear is driven to rotate by the starting motor, which in turn drives the moving gear to rotate synchronously, thereby realizing the delivery of oil. The traction plate is adjusted up and down as the eccentric wheel rotates by connecting the traction ring plate and the connecting groove. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of an adjustable displacement gear oil pump is provided for this utility model;

[0015] Figure 2A side view of an adjustable displacement gear oil pump is provided for this utility model.

[0016] Figure 3 This utility model provides a schematic diagram of the internal structure of an adjustable displacement gear oil pump;

[0017] Figure 4 This utility model provides a schematic diagram of the internal structure of the movable groove of an adjustable displacement gear oil pump;

[0018] Figure 5 This utility model presents a schematic diagram of the connection structure between the pull ring plate and the connecting groove of an adjustable displacement gear oil pump.

[0019] Legend: 1. Gear oil pump body; 11. Pump housing; 12. Pump cover; 13. Oil inlet pipe; 14. Base; 15. Oil outlet pipe; 16. Mounting bracket; 17. Flow groove; 18. Fixed gear; 19. Moving gear; 2. Motor; 3. Adjusting box; 31. Movable groove; 32. Eccentric wheel; 33. Traction plate; 34. Pulling ring plate; 35. Connecting groove; 4. Adjusting rod. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] Example 1: As Figure 1 - Figure 5As shown, this utility model provides an adjustable displacement gear oil pump, including a gear oil pump body 1. A motor 2 is installed on the upper outer wall of the gear oil pump body 1, and an adjustment box 3 is installed on the lower outer wall of the gear oil pump body 1. The gear oil pump body 1 includes a pump housing 11, a pump cover 12, an oil inlet pipe 13, a base 14, an oil outlet pipe 15, a mounting bracket 16, a flow groove 17, a fixed gear 18, and a moving gear 19. The oil inlet pipe 13 and the oil outlet pipe 15 are respectively fixedly connected to the outer walls of the two sides of the pump housing 11. The flow groove... 17 is located inside the pump casing 11. The fixed gear 18 is rotatably connected to the inner wall of the flow channel 17, and the moving gear 19 is meshed with the bottom of the fixed gear 18. The inside of the regulating box 3 is provided with a movable groove 31. The inner wall of the movable groove 31 is rotatably connected to an eccentric wheel 32. The top of the eccentric wheel 32 is movably connected to a traction plate 33. The moving gear 19 is rotatably connected to the upper outer wall of the traction plate 33. The outer wall of the regulating box 3 is rotatably connected to an adjusting rod 4. The eccentric wheel 32 is fixedly sleeved on the outer wall of the adjusting rod 4.

[0023] The specific settings and functions of this embodiment are described below. By rotating the adjusting rod 4, the eccentric wheel 32 is deflected, thereby pulling the traction plate 33 downward. The moving gear 19 is controlled to shift synchronously with the traction plate 33, thereby changing the effective volume between the teeth when the gears are meshing, realizing displacement adjustment. This allows the present invention to conveniently and dynamically adjust the displacement according to the application scenario, adapt to the changing working conditions, achieve significant energy saving effect, and reduce overflow loss.

[0024] Example 2: Figure 1 - Figure 5 As shown, the pump cover 12 is fixedly connected to the outer wall of the pump housing 11, the base 14 is fixedly connected to the bottom surface of the pump housing 11, the mounting bracket 16 is fixedly connected to the upper outer wall of the pump housing 11, the motor 2 is fixedly mounted on the outer wall of the mounting bracket 16, the shaft end of the fixed gear 18 passes through the inner wall of the mounting bracket 16 and is fixedly connected to the output shaft end of the motor 2, the outer wall of the movable groove 31 is fixedly connected to the traction ring plate 34, the bottom surface of the traction plate 33 is provided with a connecting groove 35, the traction ring plate 34 is connected to the inner wall of the connecting groove 35, and the traction plate 33 is movably connected to the inner wall of the movable groove 31.

[0025] The overall effect of this embodiment is that the base 14 facilitates the stable installation of this utility model. The oil inlet pipe 13 and the oil outlet pipe 15 are connected to the external pipeline respectively. The starting motor 2 drives the fixed gear 18 to rotate, which in turn drives the moving gear 19 to rotate synchronously, thereby realizing the delivery of oil. The connection between the traction ring plate 34 and the connecting groove 35 allows the traction plate 33 to move up and down as the eccentric wheel 32 rotates.

[0026] The device is used as follows: During use, the inlet pipe 13 and outlet pipe 15 are connected to external pipelines. The starting motor 2 drives the fixed gear 18 to rotate, which in turn drives the moving gear 19 to mesh and rotate synchronously, thus achieving oil delivery. When the displacement needs adjustment, the adjusting rod 4 is rotated to control the eccentric wheel 32 to deflect, thereby pulling the traction plate 33 downwards. This causes the moving gear 19 to deflect synchronously with the traction plate 33, thus changing the effective volume between the gear teeth during meshing. The larger the eccentricity, the larger the displacement per revolution; conversely, the smaller the eccentricity, the smaller the displacement. This allows the device to easily and dynamically adjust the displacement according to the application scenario, adapting to changing working conditions, and achieving significant energy savings while reducing overflow losses.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An adjustable displacement gear oil pump, comprising a gear oil pump body (1), characterized in that: A motor (2) is installed on the upper outer wall of the gear oil pump body (1), and an regulating box (3) is installed on the lower outer wall of the gear oil pump body (1). The gear oil pump body (1) includes a pump housing (11), a pump cover (12), an oil inlet pipe (13), a base (14), an oil outlet pipe (15), a mounting bracket (16), a flow channel (17), a fixed gear (18), and a moving gear (19). The oil inlet pipe (13) and the oil outlet pipe (15) are respectively fixedly connected to the outer walls on both sides of the pump housing (11). The flow channel (17) is set inside the pump housing (11). The fixed gear (18) is rotatably connected to the inner wall of the flow groove (17), and the moving gear (19) is meshed with the bottom of the fixed gear (18). The inside of the regulating box (3) is provided with a movable groove (31). The inner wall of the movable groove (31) is rotatably connected to an eccentric wheel (32). The top of the eccentric wheel (32) is movably connected to a traction plate (33). The moving gear (19) is rotatably connected to the upper outer wall of the traction plate (33). The outer wall of the regulating box (3) is rotatably connected to an adjusting rod (4). The eccentric wheel (32) is fixedly sleeved on the outer wall of the adjusting rod (4).

2. The adjustable displacement gear oil pump according to claim 1, characterized in that: The pump cover (12) is fixedly connected to the outer wall of the pump housing (11), and the base (14) is fixedly connected to the bottom surface of the pump housing (11).

3. The adjustable displacement gear oil pump according to claim 2, characterized in that: The mounting bracket (16) is fixedly connected to the upper outer wall of the pump casing (11), the motor (2) is fixedly installed on the outer wall of the mounting bracket (16), and the shaft end of the fixed gear (18) passes through the inner wall of the mounting bracket (16) and is fixedly connected to the output shaft end of the motor (2).

4. The adjustable displacement gear oil pump according to claim 1, characterized in that: The outer wall of the movable groove (31) is fixedly connected to a traction ring plate (34), and the bottom surface of the traction plate (33) is provided with a connecting groove (35). The traction ring plate (34) is connected to the inner wall of the connecting groove (35).

5. The adjustable displacement gear oil pump according to claim 4, characterized in that: The traction plate (33) is movably connected to the inner wall of the movable groove (31).

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