Linkage planetary gear pump

Abstract

The utility model discloses a linkage planetary gear pump which comprises a box body, a gear ring is arranged in the box body, an installation groove is formed in the outer ring of the gear ring, a noise reduction structure is arranged in the installation groove, a sun gear is arranged in the middle of the gear ring, an input shaft is fixedly arranged at the axis position of the sun gear, and one end of the input shaft rotationally penetrates through the box body and is arranged on the outer side of the box body. Three planetary gears are arranged on the outer side of the sun gear at equal intervals in the circumferential direction, the three planetary gears are engaged with the gear ring and the sun gear at the same time, and a fixing shaft is fixedly arranged at the axis of each planetary gear; according to the gear bracket, the fixing shaft and the gear bracket are fixed through the fixing screws firstly, then the fixing shaft and the arc-shaped plate are fixed through the fixing screws, the fixing effect of the fixing shaft and the gear bracket can be improved, and the fixing shaft and the gear bracket are fixedly installed through the fixing screws, so that disassembly and assembly are convenient and rapid.

Description

Technical Field

[0001] The utility model relates to the technical field related to planetary gears, in particular to a linked planetary gear pump. Background Art

[0002] A gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gears to transport liquid or increase its pressure. A planetary gear pump uses a planetary gear assembly to deliver power to the pump.

[0003] The planetary gearbox includes one or more planetary gear assemblies. Each planetary gear assembly includes a gear bracket, multiple planetary gear shafts fixed on the gear bracket, and planetary gears rotatably mounted on the planetary gear shafts. The existing planetary gear shafts and the gear bracket bracket are inconvenient to disassemble and assemble, and the planetary gears generate a lot of noise during operation, which causes the gear pump to have a lot of noise during operation. Utility Model Content

[0004] In order to solve the defects in the prior art, the utility model provides a linked planetary gear pump.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] The utility model discloses a linked planetary gear pump, comprising a casing, a gear ring is arranged in the casing, an outer ring of the gear ring is provided with an installation groove, a noise reduction structure is arranged in the installation groove, a sun gear is arranged in the middle of the gear ring, an input shaft is fixedly arranged at the axis center of the sun gear, one end of the input shaft rotates through the casing and is placed on the outside of the casing, three planetary gears are equidistantly arranged on the outside of the sun gear along the circumferential direction, the three planetary gears are respectively and simultaneously meshed with the gear ring and the sun gear, a fixed shaft is fixedly arranged at the axis center of the planetary gears, a same gear bracket is arranged on one side of the three fixed shafts, and the fixed shaft is fixedly connected to the gear bracket through a connecting structure provided on the gear bracket, an output shaft is fixedly arranged on the side of the gear bracket away from the sun gear, one end of the output shaft rotates through the casing and is placed on the outside of the casing.

[0007] As a preferred technical solution of the utility model, the noise reduction structure includes an annular sound insulation ring, and the sound insulation ring is cooperatively arranged in the installation groove.

[0008] As a preferred technical solution of the utility model, the cross section of the sound insulation ring is corrugated, and honeycomb holes are provided on the inner side of the corrugated groove of the cross section of the sound insulation ring.

[0009] As a preferred technical solution of the utility model, the connection structure includes a connection sleeve, the connection sleeve is fixedly arranged on the inner side of the gear bracket, and the connection sleeve is matched with the fixed shaft.

[0010] As a preferred technical solution of the utility model, a mounting hole is provided on the gear bracket and communicated with the connecting sleeve, a fixing screw is arranged in the mounting hole, and a threaded hole matching with the fixing screw is provided on the fixed shaft.

[0011] As a preferred technical solution of the utility model, an arc plate is fixedly provided on one side of the connecting sleeve, the arc plate is cooperatively sleeved on the outside of the fixed shaft, and fixing screws for fixing the fixed shaft are also provided on the outside of the arc plate.

[0012] The beneficial effects of the utility model are:

[0013] 1. This type of linked planetary gear pump first fixes the fixed shaft and the gear bracket by fixing screws, and then fixes the fixed shaft and the arc plate by fixing screws, which can improve the fixing effect of the fixed shaft and the gear bracket bracket, and the fixed shaft and the gear bracket are fixedly installed by fixing screws, and disassembly and assembly are convenient and quick.

[0014] 2. This type of linked planetary gear pump can block the noise generated by the inner side of the gear ring by arranging a sound insulation ring in the installation groove, and by cooperating with the honeycomb holes, it can reduce the noise outside the box, thereby reducing the noise level when the gear pump is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the front structure of a casing of a linked planetary gear pump of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a casing of a linked planetary gear pump of the utility model;

[0018] Figure 3 It is a structural schematic diagram of a noise reduction structure of a linked planetary gear pump of the utility model;

[0019] Figure 4 This is a schematic diagram of the inner structure of the gear ring of a linked planetary gear pump of the utility model;

[0020] Figure 5 The utility model is a structural schematic diagram of a connection structure of a linked planetary gear pump.

[0021] In the figure: 1. housing; 2. gear ring; 3. mounting groove; 4. noise reduction structure; 401. sound insulation ring; 402. honeycomb hole; 5. sun gear; 6. planetary gear; 7. input shaft; 8. fixed shaft; 9. connection structure; 901. connecting sleeve; 902. fixing screw; 903. threaded hole; 904. arc plate; 10. gear bracket; 11. output shaft; 12. mounting hole. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the utility model is a linked planetary gear pump, including a casing 1, a gear ring 2 is arranged in the casing 1, an outer ring of the gear ring 2 is provided with a mounting groove 3, a noise reduction structure 4 is arranged in the mounting groove 3, a sun gear 5 is arranged in the middle of the gear ring 2, an input shaft 7 is fixedly arranged at the axis center of the sun gear 5, one end of the input shaft 7 rotates through the casing 1 and is placed on the outside of the casing 1, three planetary gears 6 are equidistantly arranged on the outside of the sun gear 5 along the circumferential direction, the three planetary gears 6 are respectively and simultaneously meshed with the gear ring 2 and the sun gear 5, a fixed shaft 8 is fixedly arranged at the axis center of the planetary gears 6, one side of the three fixed shafts 8 is provided with the same gear bracket 10, and the fixed shaft 8 is fixedly connected to the gear bracket 10 through a connecting structure 9 provided on the gear bracket 10, and an output shaft 11 is fixedly arranged on the side of the gear bracket 10 away from the sun gear 5, and one end of the output shaft 11 rotates through the casing 1 and is placed on the outside of the casing 1.

[0024] The noise reduction structure 4 includes an annular sound insulation ring 401, which is arranged in the installation groove 3. The cross section of the sound insulation ring 401 is corrugated, and a honeycomb hole 402 is opened on the inner side of the corrugated groove of the cross section of the sound insulation ring 401.

[0025] By arranging a sound insulation ring 401 in the mounting groove 3, the noise generated by the inner side of the gear ring 2 can be blocked, and by cooperating with the honeycomb hole 402, the noise outside the housing 1 can be reduced, thereby reducing the noise level when the gear pump is working.

[0026] Among them, the connecting structure 9 includes a connecting sleeve 901, which is fixedly arranged on the inner side of the gear bracket 10, and the connecting sleeve 901 is matched with the fixed shaft 8. A mounting hole 12 is opened on the gear bracket 10 and communicated with the connecting sleeve 901. A fixing screw 902 is arranged in the mounting hole 12. A threaded hole 903 matching with the fixing screw 902 is opened on the fixed shaft 8. An arc plate 904 is fixedly arranged on one side of the connecting sleeve 901, and the arc plate 904 is matched with the outer side of the fixed shaft 8, and the outer side of the arc plate 904 is also provided with a fixing screw 902 for fixing the fixed shaft 8.

[0027] The fixed shaft 8 and the gear bracket 10 are first fixed by the fixing screws 902, and then the fixed shaft 8 and the arc plate 904 are fixed by the fixing screws 902, which can improve the fixing effect of the fixed shaft 8 and the gear bracket 10 bracket, and the fixed shaft 8 and the gear bracket 10 are fixed and installed by the fixing screws 902, and the disassembly and assembly are convenient and quick.

[0028] Working principle, the fixed shaft 8 and the gear bracket 10 are first fixed by the fixing screws 902, and then the fixed shaft 8 and the arc plate 904 are fixed by the fixing screws 902, which can improve the fixing effect of the fixed shaft 8 and the gear bracket 10 bracket, and the fixed shaft 8 and the gear bracket 10 are fixed and installed by the fixing screws 902, and the disassembly and assembly are relatively convenient and quick. By arranging the sound insulation ring 401 in the installation groove 3, the noise generated by the inner side of the gear ring 2 can be blocked, and by cooperating with the honeycomb hole 402, the noise on the outside of the box body 1 can be reduced, thereby reducing the noise level when the gear pump is working.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A linked planetary gear pump, comprising a housing (1), characterized in that: A gear ring (2) is arranged in the housing (1), an outer ring of the gear ring (2) is provided with a mounting groove (3), a noise reduction structure (4) is arranged in the mounting groove (3), a sun gear (5) is arranged in the middle of the gear ring (2), an input shaft (7) is fixedly arranged at the axis of the sun gear (5), one end of the input shaft (7) rotates through the housing (1) and is placed outside the housing (1), three planetary gears (6) are arranged equidistantly on the outside of the sun gear (5) along the circumferential direction, and the three planetary gears (6) are respectively and simultaneously connected to the sun gear (5). The ring gear (2) and the sun gear (5) are arranged in meshing relationship, a fixed shaft (8) is fixedly arranged at the axis of the planetary gear (6), a same gear bracket (10) is arranged on one side of the three fixed shafts (8), and the fixed shaft (8) is fixedly connected to the gear bracket (10) via a connecting structure (9) provided on the gear bracket (10), an output shaft (11) is fixedly arranged on the side of the gear bracket (10) away from the sun gear (5), and one end of the output shaft (11) is rotated through the box body (1) and is placed outside the box body (1).

2. A linked planetary gear pump according to claim 1, characterized in that: The noise reduction structure (4) comprises an annular sound insulation ring (401), and the sound insulation ring (401) is arranged in a matching manner in the installation groove (3).

3. A linked planetary gear pump according to claim 2, characterized in that: The cross section of the sound insulation ring (401) is in a corrugated shape, and a honeycomb hole (402) is provided on the inner side of the corrugated groove of the cross section of the sound insulation ring (401).

4. A linked planetary gear pump according to claim 1, characterized in that: The connection structure (9) comprises a connection sleeve (901), the connection sleeve (901) is fixedly arranged on the inner side of the gear bracket (10), and the connection sleeve (901) is matched with the fixed shaft (8).

5. A linked planetary gear pump according to claim 4, characterized in that: The gear bracket (10) is provided with a mounting hole (12) which is in communication with the connecting sleeve (901), a fixing screw (902) is arranged in the mounting hole (12), and a threaded hole (903) which matches the fixing screw (902) is provided on the fixing shaft (8).

6. A linked planetary gear pump according to claim 5, characterized in that: An arc-shaped plate (904) is fixedly provided on one side of the connecting sleeve (901), and the arc-shaped plate (904) is sleeved on the outside of the fixed shaft (8) in a matching manner, and a fixing screw (902) for fixing the fixed shaft (8) is also provided on the outside of the arc-shaped plate (904).

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