Improved gearbox and oil throwing device thereof

Abstract

The improved gearbox comprises a gear shaft, the oil slinging device, a plurality of gears and a box body, the oil slinging device is installed on the gear shaft, and the oil slinging device comprises an oil slinging disc and a liquid supply channel; the device is characterized in that a first cavity and a second cavity which are arranged in the radial direction and communicated with each other are formed in the oil flinger, a limiting boss is arranged between the first cavity and the second cavity, an elastic sealing ring with the adjustable radial size is movably installed in the second cavity, and multiple sets of spraying holes are formed in the outer wall of the second cavity; the liquid supply channel comprises a shaft center hole and a shaft radial hole which are formed in the gear shaft; when the gear shaft rotates, the radial size of the elastic sealing ring is changed due to centrifugal force, so that the elastic sealing ring can move in the second cavity in the radial direction, and at least one spraying hole can be communicated to spray lubricating oil. The lubricating and cooling effects of gears and bearings in the gearbox can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gear boxes, and in particular to an improved gear box and an oil-slinging device thereof. Background Art

[0002] In the prior art, there are three main ways to lubricate and cool the gears and bearings with lubricating oil in the gearbox: (1) immersion of the gearbox bottom in lubricating oil; (2) spraying of the gearbox top in lubricating oil; and (3) installation of an oil-slinging device (such as an oil-slinging ring or oil-slinging plate) on the gear shaft.

[0003] However, the existing oil-throwing device still has the problem of being unable to automatically adjust the connectivity of the multiple groups of spray holes according to the rotational speed of the gear shaft, and unable to adjust the spraying volume of the multiple groups of spray holes, thereby being unable to automatically adjust the lubrication and cooling effects of the gears and bearings in the gear box according to the rotational speed of the gear shaft. The lubrication and cooling effects of the gears and bearings in the gear box need to be further improved. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide an improved gearbox and its oil-slinging device. Through the structural design of the oil-slinging plate, when the gear shaft rotates, the radial size of the radially adjustable elastic sealing ring changes due to centrifugal force, so that the elastic sealing ring can move radially in the second chamber so that at least one spray hole can be connected to spray lubricating oil, which can effectively improve the lubrication and cooling effects of the gears and bearings in the gearbox; at the same time, it can automatically adjust the radial position of the elastic sealing ring according to the rotational speed of the gear shaft, thereby adjusting the connection state of multiple groups of spray holes to adjust the spraying amount of multiple groups of spray holes, so that the lubrication and cooling effects of the gears and bearings in the gearbox can be automatically adjusted according to the rotational speed of the gear shaft.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An improved oil-slinging device for a gearbox, comprising a gear shaft, an oil-slinging device, a plurality of gears, and a box body, wherein the gear shaft, the oil-slinging device, and the plurality of gears are installed in the box body, and lubricating oil is contained in the box body. The oil-slinging device is sleeved and installed on the gear shaft, and the oil-slinging device comprises an oil-slinging plate and a liquid supply channel; the characteristic is that a first chamber and a second chamber arranged radially and connected are provided in the oil-slinging plate, a limiting boss is provided between the first chamber and the second chamber, an elastic sealing ring with adjustable radial size is movably installed in the second chamber, a plurality of groups of spray holes are provided on the outer wall of the second chamber, and the liquid supply channel comprises a shaft center hole and a shaft radial hole provided in the gear shaft, and the shaft center hole is connected to the first chamber through the shaft radial hole; the lubricating oil is supplied through the shaft center hole, and when the gear shaft rotates, the radial size of the elastic sealing ring changes due to centrifugal force, so that the elastic sealing ring can move radially in the second chamber so that at least one spray hole can be connected to spray the lubricating oil.

[0007] Furthermore, the end of the gear shaft is connected to a rotary joint / rotating ring, and the center hole of the shaft is connected to the pressurized lubricating oil through the rotary joint / rotating ring.

[0008] Furthermore, the elastic sealing ring includes an arc-shaped sealing ring and an elastic telescopic tube, and an elastic telescopic tube is connected between two adjacent arc-shaped sealing rings, so that when the gear shaft rotates, the radial dimension of the elastic sealing ring changes due to centrifugal force, so that the elastic sealing ring can move radially in the second chamber, so that at least one spray hole can be connected to spray lubricating oil.

[0009] Furthermore, the plurality of groups of spray holes include a first spray hole, a second spray hole, a third spray hole, and a fourth spray hole sequentially opened along the radial direction of the oil-slinging plate, and each group of spray holes has a plurality of spray holes.

[0010] Furthermore, when the gear shaft is stationary, the radial inner side of the elastic sealing ring abuts against the limiting boss, and at this time the first chamber is not connected to the first spray hole and the second spray hole; when the gear shaft is at a first speed, the elastic sealing ring moves radially in the second chamber so that the first chamber is only connected to the first spray hole, and the lubricating oil is sprayed only through the first spray hole.

[0011] Further, when the gear shaft is at a second speed, the elastic sealing ring moves radially in the second chamber so that the first chamber is connected only to the first spray hole and the second spray hole, and lubricating oil is sprayed only through the first spray hole and the second spray hole; when the gear shaft is at a third speed, the elastic sealing ring moves radially in the second chamber so that the first chamber is connected to the first spray hole, the second spray hole, the third spray hole, and the fourth spray hole, and lubricating oil is sprayed through the first spray hole, the second spray hole, the third spray hole, and the fourth spray hole.

[0012] Furthermore, a radial channel and an axial channel are provided in the oil-slinging pan, and the second chamber is connected to the third spray hole and the fourth spray hole through the radial channel and the axial channel respectively; the first spray hole, the second spray hole and the third spray hole are provided on both sides of the oil-slinging pan, and the fourth spray hole is provided on the outer peripheral surface of the oil-slinging pan.

[0013] Furthermore, blades are provided in the first chamber, and the plurality of blades are distributed along the circumferential direction, and the plurality of blades function as centrifugal impellers; the radial length of the blades is 0.3-0.5 times the radius of the oil-slinging plate.

[0014] An improved gearbox includes the above-mentioned oil-slinging device and a lubricating oil circulation system. The oil-slinging device is sleeved and installed on the gear shaft. The lubricating oil circulation system includes a small oil pump, which is connected to the bottom of the gearbox body and the oil-slinging device through pipelines.

[0015] The present invention provides an improved gearbox and its oil-slinging device. Through the structural design of the oil-slinging plate, when the gear shaft rotates, the radial size of the radially adjustable elastic sealing ring changes due to centrifugal force, so that the elastic sealing ring can move radially in the second chamber to enable at least one spray hole to be connected to spray lubricating oil, which can effectively improve the lubrication and cooling effects of the gears and bearings in the gearbox; at the same time, it can automatically adjust the radial position of the elastic sealing ring according to the rotational speed of the gear shaft, thereby adjusting the connection status of multiple groups of spray holes, so as to adjust the spraying amount of multiple groups of spray holes, thereby automatically adjusting the lubrication and cooling effects of the gears and bearings in the gearbox according to the rotational speed of the gear shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the oil-slinging device of the improved gearbox of the present invention;

[0017] Figure 2 This is a structural schematic diagram of the oil-slinging device of the improved gearbox of the present invention located at the first oil-slinging position;

[0018] Figure 3 This is a structural schematic diagram of the oil-slinging device of the improved gearbox of the present invention located at the second oil-slinging position;

[0019] Figure 4 This is a structural schematic diagram of the oil-slinging device of the improved gearbox of the present invention located at the third oil-slinging position;

[0020] Figure 5 This is a partially enlarged structural diagram of the oil-slinging device of the improved gearbox of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the radially adjustable elastic sealing ring of the present invention.

[0022] In the figure: gear shaft 1, oil slinger plate 2, radially adjustable elastic sealing ring 3, blade 4, shaft center hole 11, shaft radial hole 12, first chamber 21, second chamber 22, limiting boss 23, first spray hole 24, second spray hole 25, radial channel 26, axial channel 27, third spray hole 28, fourth spray hole 29, arc-shaped sealing ring 31, elastic telescopic tube 32. DETAILED DESCRIPTION

[0023] To make the technical solution and its advantages of the present invention more clear, the technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of the present invention and are only used to explain the present invention, not to limit the present invention. It should be noted that, for ease of description, the accompanying drawings only show the parts / structures related to the present invention. Other related parts can refer to the general design. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0024] All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort shall fall within the scope of protection of the present invention. Furthermore, unless otherwise defined, technical or scientific terms used in the description of the present invention shall have the same meanings as those generally understood by persons of ordinary skill in the art to which the present invention belongs.

[0025] The present invention will be described in further detail below with reference to the accompanying drawings.

[0026] like Figure 1-6 As shown, an improved gearbox oil-slinging device includes a gear shaft 1, an oil-slinging device, multiple gears, and a housing. The gear shaft 1, the oil-slinging device, and the multiple gears are installed in the housing. The housing contains lubricating oil / cooling oil. The oil-slinging device is sleeved and mounted on the gear shaft 1. The oil-slinging device includes an oil-slinging plate 2 and a liquid supply channel. The oil-slinging plate 2 is annular or disc-shaped. The oil-slinging plate 2 is characterized in that a first chamber 21 and a second chamber 22 are radially arranged and connected to each other, a limiting boss 23 is provided between the first chamber 21 and the second chamber 22, and a radially adjustable elastic seal is movably installed in the second chamber 22. Ring 3, the outer wall of the second chamber 22 is provided with multiple groups of spray holes (24, 25, 28, 29), the spray holes are used to spray lubricating oil / cooling oil, and the liquid supply channel includes a shaft center hole 11 and a shaft radial hole 12 provided in the gear shaft 1, and the shaft center hole 11 is connected to the first chamber 21 through the shaft radial hole 12; the lubricating oil is supplied through the shaft center hole 11, and when the gear shaft 1 rotates, the radial size of the radially adjustable elastic sealing ring 3 changes due to centrifugal force, so that the elastic sealing ring 3 can move radially in the second chamber 22, so that at least one spray hole can be connected to spray the lubricating oil.

[0027] In one embodiment, the end of the gear shaft 1 is connected to a rotary joint / rotating ring, and the shaft center hole 11 is connected to the pressurized lubricating oil through the rotary joint / rotating ring. For example, a small oil pump is connected to the bottom of the gearbox housing and the rotary joint / rotating ring through pipelines to supply lubricating oil.

[0028] In one embodiment, the radially adjustable elastic sealing ring 3 includes an arc-shaped sealing ring 31 and an elastic telescopic tube 32. An elastic telescopic tube 32 (segmented elastic sealing ring 3) is connected between two adjacent arc-shaped sealing rings 31, so that when the gear shaft 1 rotates, the radial size of the elastic sealing ring 3 changes due to centrifugal force, so that the elastic sealing ring 3 can move radially in the second chamber 22, so that at least one spray hole can be connected to spray lubricating oil.

[0029] Alternatively, the elastic sealing ring 3 includes an arc-shaped sealing ring 31 and an elastic telescopic tube 32. Multiple arc-shaped sealing rings 31 are arranged in the integral elastic telescopic tube 32, and a spring / elastic rope (integral elastic sealing ring 3) is connected between two adjacent arc-shaped sealing rings 31.

[0030] The plurality of spray holes (24, 25, 28, 29) include a first spray hole 24, a second spray hole 25, a third spray hole 28, and a fourth spray hole 29 sequentially opened along the radial direction of the oil-slinging plate 2, and each group of spray holes has a plurality of spray holes.

[0031] In one embodiment, when the gear shaft 1 is stationary, the radial inner side of the elastic sealing ring 3 abuts against the limiting boss 23 , and the first chamber 21 is not connected to the first spray hole 24 and the second spray hole 25 .

[0032] When the gear shaft 1 is at the first speed / first speed range, the elastic sealing ring 3 moves radially in the second chamber 22 so that the first chamber 21 is connected only to the first spray hole 24 and lubricating oil is sprayed only through the first spray hole 24 .

[0033] When the gear shaft 1 is in the second speed / second speed range, the elastic sealing ring 3 moves radially in the second chamber 22 so that the first chamber 21 is connected only to the first spray hole 24 and the second spray hole 25, and lubricating oil is sprayed only through the first spray hole 24 and the second spray hole 25.

[0034] When the gear shaft 1 is in the third speed / third speed range, the elastic sealing ring 3 moves radially in the second chamber 22 so that the first chamber 21 is connected with the first spray hole 24, the second spray hole 25, the third spray hole 28, and the fourth spray hole 29, and the lubricating oil is sprayed through the first spray hole 24, the second spray hole 25, the third spray hole 28, and the fourth spray hole 29.

[0035] A radial channel 26 and an axial channel 27 are provided in the oil-slinging pan 2, and the second chamber 22 is connected to the third spray hole 28 and the fourth spray hole 29 through the radial channel 26 and the axial channel 27 respectively; the first spray hole 24, the second spray hole 25, and the third spray hole 28 are provided on both sides of the oil-slinging pan 2, and the fourth spray hole 29 is provided on the outer peripheral surface of the oil-slinging pan 2.

[0036] An improved gearbox and its oil-slinging device of the present invention, through the structural design of the oil-slinging plate 2, when the gear shaft 1 rotates, the radial size of the radially adjustable elastic sealing ring 3 changes due to the centrifugal force, so that the elastic sealing ring 3 can move radially in the second chamber 22, so that at least one spray hole can be connected to spray lubricating oil, which can effectively improve the lubrication and cooling effects of the gears and bearings in the gearbox; at the same time, it can automatically adjust the radial position of the elastic sealing ring 3 according to the rotational speed of the gear shaft 1 (different rotational speeds correspond to different centrifugal forces), thereby adjusting the connection status of multiple groups of spray holes to adjust the spraying amount of multiple groups of spray holes, so that the lubrication and cooling effects of the gears and bearings in the gearbox can be automatically adjusted according to the rotational speed of the gear shaft 1 (high rotational speed corresponds to high spraying amount, low rotational speed corresponds to low spraying amount).

[0037] In one embodiment, blades 4 are disposed within the first chamber 21. Multiple blades 4 are distributed circumferentially, functioning as a centrifugal impeller. The radial length of the blades 4 is 0.3-0.5 times, preferably 0.4 times, the radius of the oil slinger 2 to enhance the pumping efficiency of the blades 4.

[0038] An improved gearbox includes the above-mentioned oil-slinging device and a lubricating oil circulation system. The oil-slinging device is sleeved and installed on the gear shaft 1. The lubricating oil circulation system includes a small oil pump, which is connected to the bottom of the gearbox body and the oil-slinging device through pipelines.

[0039] An improved gearbox and its oil-slinging device of the present invention, through the structural design of the oil-slinging plate 2, when the gear shaft 1 rotates, the radial size of the radially adjustable elastic sealing ring 3 changes due to the centrifugal force, so that the elastic sealing ring 3 can move radially in the second chamber 22, so that at least one spray hole can be connected to spray lubricating oil, which can effectively improve the lubrication and cooling effects of the gears and bearings in the gearbox; at the same time, it can automatically adjust the radial position of the elastic sealing ring 3 according to the rotational speed of the gear shaft 1 (different rotational speeds correspond to different centrifugal forces), thereby adjusting the connection status of multiple groups of spray holes to adjust the spraying amount of multiple groups of spray holes, so that the lubrication and cooling effects of the gears and bearings in the gearbox can be automatically adjusted according to the rotational speed of the gear shaft 1 (high rotational speed corresponds to high spraying amount, low rotational speed corresponds to low spraying amount).

[0040] The above-mentioned embodiments are illustrative of the present invention, not limiting thereof. It is understood that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An improved oil-slinging device for a gearbox, comprising a gear shaft (1), an oil-slinging device, a plurality of gears, and a housing, wherein the gear shaft, the oil-slinging device, and the plurality of gears are mounted in the housing, the housing contains lubricating oil, the oil-slinging device is sleeved and mounted on the gear shaft, and the oil-slinging device comprises an oil-slinging plate and a liquid supply channel; characterized in that: The oil-slinging plate (2) is provided with a first chamber (21) and a second chamber (22) which are arranged radially and communicate with each other. A limiting boss (23) is provided between the first chamber and the second chamber. A radially adjustable elastic sealing ring (3) is movably installed in the second chamber. The outer wall of the second chamber is provided with multiple groups of spray holes. The liquid supply channel includes a shaft center hole (11) and a shaft radial hole (12) provided in the gear shaft. The shaft center hole is communicated with the first chamber through the shaft radial hole. Lubricating oil is supplied through the shaft center hole. When the gear shaft rotates, the radial size of the elastic sealing ring changes due to centrifugal force, so that the elastic sealing ring can move radially in the second chamber, so that at least one spray hole can be connected to spray lubricating oil.

2. The improved gearbox oil-swing device according to claim 1, characterized in that: The end of the gear shaft is connected with a rotary joint / rotating ring, and the center hole of the shaft is connected with the pressurized lubricating oil through the rotary joint / rotating ring.

3. The improved gearbox oil-slinging device according to claim 2, characterized in that: The elastic sealing ring comprises an arc-shaped sealing ring (31) and an elastic telescopic tube (32), wherein the elastic telescopic tube is connected between two adjacent arc-shaped sealing rings, so that when the gear shaft rotates, the radial dimension of the elastic sealing ring changes due to centrifugal force, thereby the elastic sealing ring can move radially in the second chamber, so that at least one spray hole can be connected to spray lubricating oil.

4. The improved gearbox oil-swinging device according to claim 1, characterized in that: The plurality of spray holes include a first spray hole (24), a second spray hole (25), a third spray hole (28), and a fourth spray hole (29) which are sequentially opened along the radial direction of the oil-slinging plate, and each group of spray holes has a plurality of spray holes.

5. The improved gearbox oil-slinging device according to claim 4, characterized in that: When the gear shaft is stationary, the radial inner side of the elastic sealing ring abuts against the limiting boss, and the first chamber is not connected to the first spray hole and the second spray hole. When the gear shaft is at a first speed, the elastic sealing ring moves radially in the second chamber so that the first chamber is only connected to the first spray hole, and the lubricating oil is sprayed only through the first spray hole.

6. The improved gearbox oil-slinging device according to claim 5, characterized in that: When the gear shaft is at a second speed, the elastic sealing ring moves radially in the second chamber so that the first chamber is communicated with only the first spray hole and the second spray hole, and lubricating oil is sprayed only through the first spray hole and the second spray hole; when the gear shaft is at a third speed, the elastic sealing ring moves radially in the second chamber so that the first chamber is communicated with the first spray hole, the second spray hole, the third spray hole, and the fourth spray hole, and lubricating oil is sprayed through the first spray hole, the second spray hole, the third spray hole, and the fourth spray hole.

7. The improved gearbox oil-slinging device according to claim 6, characterized in that: A radial channel (26) and an axial channel (27) are provided in the oil-slinging pan, and the second chamber is connected to the third spray hole and the fourth spray hole through the radial channel and the axial channel respectively; the first spray hole, the second spray hole and the third spray hole are provided on both sides of the oil-slinging pan, and the fourth spray hole is provided on the outer peripheral surface of the oil-slinging pan.

8. The improved gearbox oil-slinging device according to claim 7, characterized in that: Blades (4) are arranged in the first chamber, with a plurality of blades distributed along the circumference, and the plurality of blades function as centrifugal impellers; the radial length of the blades is 0.3-0.5 times the radius of the oil-slinging plate.

9. An improved gearbox, comprising an oil-spinning device and a lubricating oil circulation system. The oil-spinning device is sleeved and mounted on a gear shaft. The lubricating oil circulation system comprises a small oil pump, which is connected to the bottom of the gearbox body and the oil-spinning device through pipelines. The oil-spinning device is an improved gearbox oil-spinning device as described in claim 1.

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