Hydraulic oil pump with multidirectional valve

Abstract

The hydraulic oil pump comprises a pump shell, a plurality of oil inlet ends and a plurality of oil outlet ends, the oil inlet ends and the oil outlet ends are arranged on the pump shell, a driving shaft and a driven shaft are rotationally arranged on the pump shell, and a plurality of oil outlet assemblies are arranged on the driving shaft and the driven shaft. Each single oil outlet assembly comprises a driving tooth fixedly arranged on the driving shaft and a driven tooth fixedly arranged on the driven shaft, driving assemblies and jacking assemblies driven by the driving assemblies are symmetrically arranged on the two sides of each driving tooth, and adjusting assemblies are arranged on the jacking assemblies and comprise adjusting plates arranged on the driving teeth in a sliding mode. An oil outlet channel used for adjusting the oil outlet amount is formed between the adjusting plate and the driving teeth, the oil outlet assembly is used for conveying hydraulic oil from the oil inlet end to the oil outlet end in the rotating process of the driving teeth and the driven teeth, and the jacking and stretching assembly is used for pushing and pulling the adjusting plate under driving of the driving assembly. The adjusting assembly is used for adjusting the size of the oil outlet channel in the sliding process of the adjusting plate on the driving teeth, and use is convenient.

Description

Technical Field

[0001] The invention relates to the field of hydraulic oil pumps, and more particularly to a hydraulic oil pump with a multi-directional valve. Background Art

[0002] The hydraulic oil pump is the power source in the hydraulic system. The hydraulic oil pump includes vane pump, gear pump, plunger pump and screw pump. Among them, the gear pump is small in size, simple in structure, has no strict requirements on oil cleanliness and is cheap. Therefore, it is widely used in construction machinery. However, the displacement of the gear pump is not variable, and conventional gear pumps cannot achieve an adjustment effect, which limits its use.

[0003] The Chinese patent with publication number CN113404691A discloses a hydraulic oil pump with a multi-directional valve. By detecting the pressure conditions in the corresponding oil outlet end in real time through multiple pressure sensors, the size of the reaction force in the corresponding oil outlet passage can be determined, that is, the size of the hydraulic oil supply demand in each passage is reflected. If the demand of multiple oil outlet passages is different, the controller compares the feedback information of the multiple pressure sensors and controls the opening of each flow rate valve at different angles, so that the excess hydraulic oil in the single oil outlet end with a small oil supply demand is transported to the oil outlet end with a large demand through the distribution pipe and the corresponding flow rate valve. In this way, the serious radial unbalanced force problem that occurs when the demand of a single oil supply passage is small can be solved, and the adaptive oil supply of each oil outlet end can be intelligently adjusted according to the comparison of the demand of each passage when the gear speed is constant, thereby ensuring the stable operation of the multi-gear pump. Although the hydraulic oil pump can adjust the flow rate, its structure is complex, the cost is high, and the use process is cumbersome. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies of the prior art and provide a hydraulic oil pump with a multi-directional valve. The driving assembly drives the extension assembly to extend the adjustment plates on both sides of the active tooth, thereby adjusting the size of the oil outlet channel and thus adjusting the oil output at the oil outlet end. The present invention has a simple structure and is easy to use.

[0005] The technical solutions of the present invention are as follows:

[0006] A hydraulic oil pump with a multi-directional valve comprises a pump housing, a plurality of oil inlet ends and a plurality of oil outlet ends arranged on the pump housing, a driving shaft and a passive shaft are rotatably arranged on the pump housing, a plurality of groups of oil outlet assemblies are arranged on the driving shaft and the passive shaft, a single group of the oil outlet assemblies comprises a driving tooth fixedly arranged on the driving shaft and a passive tooth fixedly arranged on the passive shaft, a driving assembly and a top extension assembly driven by the driving assembly are symmetrically arranged on both sides of the driving tooth, an adjusting assembly is arranged on the top extension assembly, the adjusting assembly comprises an adjusting plate slidably arranged on the driving tooth, an oil outlet channel for adjusting the oil outlet amount is formed between the adjusting plate and the driving tooth, the oil outlet assembly is used to transport the hydraulic oil from the oil inlet end to the oil outlet end during the rotation of the driving tooth and the passive tooth, the top extension assembly is used to push and pull the adjusting plate driven by the driving assembly, and the adjusting assembly is used to adjust the size of the oil outlet channel during the sliding of the adjusting plate on the driving tooth.

[0007] Preferably, the oil outlet assembly further comprises a sealing block fixedly disposed in the pump housing and an arc groove provided on the sealing block, wherein the sealing block is fitted with both sides of the passive tooth, the active tooth is meshed with the passive tooth, and the arc groove is fitted with the adjustment plate.

[0008] Preferably, the drive assembly includes a servo motor fixedly mounted in a pump housing, a first gear fixedly mounted on an output shaft of the servo motor, a screw rod sleeved on a driving shaft, and a second gear fixedly mounted on the screw rod, wherein the first gear is meshed with the second gear, and the screw rod is rotatably mounted on the pump housing.

[0009] Preferably, the jacking assembly comprises a jacking plate slidably arranged on the screw rod, a jacking rod fixedly arranged on the jacking plate, and a limit block fixedly arranged on the jacking rod.

[0010] As a preference, the adjustment assembly further includes a slot provided on the driving shaft, a block fixedly arranged on the adjustment plate, a through slot provided on the adjustment plate, and a gear slot provided on the adjustment plate, the block cooperates with the slot, the limit block cooperates with the through slot, and the gear slot cooperates with the gear teeth on the driving tooth.

[0011] As a preference, several of the oil inlet ends are provided with oil inlet valves, and several of the oil inlet valves are connected with oil inlet pipes.

[0012] As a preference, a pressure sensor is provided on the inner wall of the oil outlet end, a controller is provided on the pump housing, and the pressure sensor and the servo motor are electrically connected to the controller.

[0013] As a preference, the minimum length of the oil outlet channel is consistent with the length between the sealing blocks.

[0014] The beneficial effects of the present invention are

[0015] 1. The present invention is provided with an adjustment component. The pressure sensor on the oil outlet end detects the pressure condition in the oil outlet end, which can reflect the hydraulic oil demand in each passage. Then the pressure sensor transmits the data to the controller for comparison. The controller can control the servo motor to start, and the servo motor drives the first gear to rotate, drives the second gear and the screw rod to rotate, drives the extension plate to extend the adjustment plate, drives the gear groove to slide on the gear teeth of the active tooth, and adjusts the size of the oil outlet channel, thereby achieving the effect of adjusting the oil amount at the oil outlet end. The structure is simple and the operation is convenient.

[0016] In summary, the present invention has the advantages of adjusting the oil output and being highly practical, and is suitable for the field of hydraulic oil pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of a hydraulic oil pump with a multi-directional valve;

[0019] Figure 2 It is the structural schematic diagram of the oil outlet end;

[0020] Figure 3 It is a schematic diagram of the internal structure of the hydraulic oil pump;

[0021] Figure 4 It is a schematic diagram of the structure of the regulating component;

[0022] Figure 5 It is a structural schematic diagram of the oil outlet channel;

[0023] Figure 6 It is a structural schematic diagram of the arc groove;

[0024] Figure 7 is a schematic diagram of the structure of the top extension component;

[0025] Figure 8 It is a schematic diagram of the state when the driving gear and the passive gear drive the hydraulic oil to flow;

[0026] Fig. 9 This is a schematic diagram of the state when the screw rod rotates to drive the extension rod to drive the adjustment plate to adjust the size of the oil outlet channel;

[0027] Fig.10 for Fig. 9 Enlarged view of point A in the middle;

[0028] Fig.11 for Fig. 9 Enlarged view of point B in the middle;

[0029] Figure numerals: 1 pump housing, 2 oil inlet end, 3 oil outlet end, 4 driving shaft, 5 passive shaft, 6 oil outlet assembly, 61 driving gear, 62 passive gear, 63 sealing block, 64 arc groove, 7 driving assembly, 71 servo motor, 72 first gear, 73 screw rod, 74 second gear, 8 extension assembly, 81 extension plate, 82 extension rod, 83 limit block, 9 adjustment assembly, 91 adjustment plate, 92 oil outlet channel, 93 slot, 94 block, 95 through slot, 96 gear slot, 10 oil inlet valve, 11 oil inlet pipe, 12 pressure sensor, 13 controller. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0031] Embodiment 1

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] like Figures 1 to 11 As shown, a hydraulic oil pump with a multi-directional valve includes a pump housing 1, a plurality of oil inlet ends 2 and a plurality of oil outlet ends 3 arranged on the pump housing 1, a driving shaft 4 and a passive shaft 5 are rotatably arranged on the pump housing 1, a plurality of groups of oil outlet components 6 are arranged on the driving shaft 4 and the passive shaft 5, a single group of oil outlet components 6 includes a driving tooth 61 fixedly arranged on the driving shaft 4 and a passive tooth 62 fixedly arranged on the passive shaft 5, a driving component 7 and a top extension component 8 driven by the driving component 7 are symmetrically arranged on both sides of the driving tooth 61, and a top extension component 8 is arranged on the top extension component 8. An adjusting component 9 is provided, and the adjusting component 9 includes an adjusting plate 91 slidably arranged on the active tooth 61. An oil outlet channel 92 for adjusting the oil output amount is formed between the adjusting plate 91 and the active tooth 61. The oil outlet component 6 is used to transport the hydraulic oil from the oil inlet end 2 to the oil outlet end 3 during the rotation of the active tooth 61 and the passive tooth 62. The extending component 8 is used to push and pull the adjusting plate 91 under the drive of the driving component 7. The adjusting component 9 is used to adjust the size of the oil outlet channel 92 during the sliding of the adjusting plate 91 on the active tooth 61.

[0034] like Figures 3 to 8As shown, the oil outlet assembly 6 also includes a sealing block 63 fixedly arranged in the pump housing 1, and an arc groove 64 provided on the sealing block 63, the sealing block 63 is fitted with both sides of the passive gear 62, the active gear 61 is meshed with the passive gear 62, and the arc groove 64 is fitted with the adjustment plate 91, wherein a driving device is connected to the active shaft 4, which drives the active shaft 4 and the active gear 61 to rotate, and the active gear 61 drives the passive gear 62 and the passive shaft 5 to rotate, and the hydraulic oil is driven to flow during the rotation of the active gear 61 and the passive gear 62.

[0035] like Figure 4 As shown, the driving assembly 7 includes a servo motor 71 fixedly arranged in the pump housing 1, a first gear 72 fixedly arranged on the output shaft of the servo motor 71, a screw rod 73 sleeved on the driving shaft 4, and a second gear 74 fixedly arranged on the screw rod 73. The first gear 72 is meshed with the second gear 74, and the screw rod 73 is rotatably arranged on the pump housing 1.

[0036] like Figures 9 to 11 As shown, the extension assembly 8 includes an extension plate 81 slidably set on the screw rod 73, an extension rod 82 fixedly set on the extension plate 81, and a limit block 83 fixedly set on the extension rod 82. When in use, when it is necessary to adjust the oil output of one of the oil outlet ends 3, the servo motor 71 drives the first gear 72 to rotate, drives the second gear 74 and the screw rod 73 to rotate, and drives the extension plate 81 to extend the adjustment plate 91 to adjust the oil output.

[0037] like Figures 9 to 11 As shown, the adjustment component 9 also includes a slot 93 provided on the driving shaft 4, a block 94 fixedly arranged on the adjustment plate 91, a through slot 95 provided on the adjustment plate 91, and a gear slot 96 provided on the adjustment plate 91. The block 94 cooperates with the slot 93, the limit block 83 cooperates with the through slot 95, and the gear slot 96 cooperates with the gear teeth on the driving gear 61. When in use, the adjustment plate 91 rotates following the driving gear 61. When the extension plate 81 drives the adjustment plate 91 to extend, the gear slot 96 is driven to slide on the gear teeth of the driving gear 61 to adjust the size of the oil outlet channel 92, thereby achieving the effect of adjusting the oil amount at the oil outlet end 3. The structure is simple and the operation is convenient.

[0038] like Figure 1 As shown, several oil inlet ends 2 are provided with oil inlet valves 10, and several oil inlet valves 10 are connected with oil inlet pipes 11. When in use, hydraulic oil enters from the oil inlet pipes 11, and the hydraulic oil can flow after the corresponding oil inlet valves 10 are opened.

[0039] like Figure 8As shown, pressure sensors 12 are provided on the inner walls of several oil outlet ends 3, and a controller 13 is provided on the pump housing 1. The pressure sensors 12 and the servo motor 71 are electrically connected to the controller 13. When in use, the pressure sensor 12 on the oil outlet end 3 detects the pressure condition inside the oil outlet end 3, which can reflect the hydraulic oil demand in each passage. Then the pressure sensor 12 transmits the data to the controller 13 for comparison. The controller 13 can control the servo motor 71 to start, adjust the size of the oil outlet channel 10, and thus adjust the hydraulic oil output.

[0040] like Fig. 9 As shown, the minimum length of the oil outlet channel 92 is consistent with the length between the sealing blocks 63 , preventing the adjustment plate 91 from interfering with the meshing of the active teeth 61 and the passive teeth 62 .

[0041] Working process

[0042] The pressure sensor 12 on the oil outlet end 3 detects the pressure condition in the oil outlet end 3, which can reflect the hydraulic oil demand in each passage. Then the pressure sensor 12 transmits the data to the controller 13 for comparison. The controller 13 can control the servo motor 71 to start, and the servo motor 71 drives the first gear 72 to rotate, drives the second gear 74 and the screw rod 73 to rotate, drives the extension plate 81 to extend the adjustment plate 91, drives the gear groove 96 to slide on the gear teeth of the active tooth 61, and adjusts the size of the oil outlet channel 92, thereby achieving the effect of adjusting the oil amount at the oil outlet end 3. The structure is simple and the operation is convenient.

[0043] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0044] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0045] The above description in conjunction with the accompanying drawings is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment. It should be pointed out that for those skilled in the art, various modifications and improvements can be made without departing from the structure of the present invention, which should also be regarded as the scope of protection of the present invention and will not affect the effect and practicality of the implementation of the present invention.

Claims

1. A hydraulic oil pump with a multi-directional valve, comprising a pump housing (1), a plurality of oil inlet ends (2) and a plurality of oil outlet ends (3) arranged on the pump housing (1), characterized in that: A driving shaft (4) and a driven shaft (5) are rotatably arranged on the pump housing (1); a plurality of groups of oil outlet assemblies (6) are arranged on the driving shaft (4) and the driven shaft (5); a single group of the oil outlet assemblies (6) comprises a driving tooth (61) fixedly arranged on the driving shaft (4) and a driven tooth (62) fixedly arranged on the driven shaft (5); a driving assembly (7) and a top extension assembly (8) driven by the driving assembly (7) are symmetrically arranged on both sides of the driving tooth (61); an adjusting assembly (9) is arranged on the top extension assembly (8); the adjusting assembly (9) comprises a gear (61) slidably arranged on the driving shaft (4); a gear (62) is ... An adjustment plate (91) is provided on the driving tooth (61); an oil outlet channel (92) for adjusting the oil outlet volume is formed between the adjustment plate (91) and the driving tooth (61); the oil outlet assembly (6) is used to transport hydraulic oil from the oil inlet end (2) to the oil outlet end (3) during the rotation of the driving tooth (61) and the driven tooth (62); the extension assembly (8) is used to push and pull the adjustment plate (91) under the drive of the driving assembly (7); and the adjustment assembly (9) is used to adjust the size of the oil outlet channel (92) during the sliding of the adjustment plate (91) on the driving tooth (61).

2. A hydraulic oil pump with a multi-directional valve according to claim 1, characterized in that: The oil outlet assembly (6) further comprises a sealing block (63) fixedly arranged in the pump housing (1) and an arc-shaped groove (64) formed on the sealing block (63); the sealing block (63) is in contact with both sides of the passive tooth (62); the active tooth (61) is meshed with the passive tooth (62); and the arc-shaped groove (64) is in contact with the adjustment plate (91).

3. A hydraulic oil pump with a multi-directional valve according to claim 1, characterized in that: The driving assembly (7) comprises a servo motor (71) fixedly arranged in the pump housing (1), a first gear (72) fixedly arranged on the output shaft of the servo motor (71), a screw rod (73) sleeved on the driving shaft (4), and a second gear (74) fixedly arranged on the screw rod (73), wherein the first gear (72) is meshed with the second gear (74), and the screw rod (73) is rotatably arranged on the pump housing (1).

4. A hydraulic oil pump with a multi-directional valve according to claim 3, characterized in that: The jacking assembly (8) comprises a jacking plate (81) slidably arranged on the screw rod (73), a jacking rod (82) fixedly arranged on the jacking plate (81), and a limit block (83) fixedly arranged on the jacking rod (82).

5. A hydraulic oil pump with a multi-directional valve according to claim 4, characterized in that: The adjustment assembly (9) further comprises a clamping groove (93) provided on the driving shaft (4), a clamping block (94) fixedly arranged on the adjustment plate (91), a through groove (95) provided on the adjustment plate (91), and a gear groove (96) provided on the adjustment plate (91); the clamping block (94) cooperates with the clamping groove (93), the limiting block (83) cooperates with the through groove (95), and the gear groove (96) cooperates with the gear teeth on the driving tooth (61).

6. The hydraulic oil pump with a multi-directional valve according to claim 1, characterized in that: A plurality of the oil inlet ends (2) are each provided with an oil inlet valve (10), and a plurality of the oil inlet valves (10) are connected to an oil inlet pipe (11).

7. The hydraulic oil pump with a multi-directional valve according to claim 3, characterized in that: Pressure sensors (12) are arranged on the inner walls of the plurality of oil outlet ends (3), a controller (13) is arranged on the pump housing (1), and the pressure sensors (12) and the servo motor (71) are electrically connected to the controller (13).

8. The hydraulic oil pump with a multi-directional valve according to claim 2, characterized in that: The minimum length of the oil outlet channel (92) is consistent with the length between the sealing blocks (63).

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