CN218935198U

CN218935198U - Lubrication gear and open gear lubrication device

Info

Publication number: CN218935198U
Application number: CN202223057905.1U
Authority: CN
Inventors: 刘金华
Original assignee: National Energy Group Coal Coking Co Ltd
Current assignee: National Energy Group Coal Coking Co Ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-04-28
Anticipated expiration: 2032-11-17

Abstract

The utility model discloses a lubrication gear and an open gear lubrication device, which comprises a disc body with an oil storage cavity and a plurality of gear teeth uniformly distributed on the circumferential surface of the disc body; the gear teeth are provided with gear tooth cavities, and plunger valves are arranged on the side walls of at least one side of each gear tooth; the plunger valve comprises a valve body, a plunger and an elastic piece; the valve body having a valve body passage in communication with the gear tooth cavity, the plunger slidably fitting in the valve body passage; the elastic piece is connected between the plunger and the valve body. According to the lubricating gear and the open gear lubricating device disclosed by the utility model, the plunger valve is arranged on the gear teeth of the lubricating gear and is used for controlling the lubricating state of each gear tooth of the lubricating gear, so that only the gear which is in a meshed state with the transmission gear on the lubricating gear can be lubricated by oil, and the other gear teeth stop lubricating by oil, so that lubricating oil is saved, and the generation of oil stains is effectively reduced.

Description

Lubrication gear and open gear lubrication device

Technical Field

The utility model relates to the technical field of open gear lubrication, in particular to a lubrication gear and an open gear lubrication device.

Background

The gear transmission mode of the mechanical equipment comprises open gear transmission and closed gear transmission. Open gear transmission means that the transmission gear is not provided with a dust cover or a shell, and the transmission gear is completely exposed outside. The open gear transmission is easy to invade by external sundries, poor in lubrication and easy to wear gear teeth due to no dust cover or shell protection, and is suitable for low-speed transmission.

In the prior art, a lubrication gear is often used for lubricating the split gear. Specifically, the lubricating gear is provided with an oil passage, and the gear teeth of the lubricating gear are provided with oil outlets. The oil tank is connected to the oil passage through an oil pipe to realize oil supply. The lubrication gear is meshed with the open gear, and when the open gear rotates, lubricating oil flowing out of the oil outlet lubricates gear teeth of the open gear.

However, in the prior art, the oil outlet of the lubrication gear is normally open, and the oil outlet cannot be changed along with the gear engagement state transition. When the lubrication gear rotates to work, all oil outlets on all gear teeth of the lubrication gear always flow out of the lubrication oil. The lubricating gear is meshed with only part of the gear teeth of the open gear, so that the lubricating oil flowing out of the oil outlet of the gear teeth which are not meshed at present has dripping phenomenon, resources are caused, and oil stains are also generated.

In view of the above, it is necessary to provide a novel lubrication gear and an open gear lubrication device.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a novel lubrication gear and an open gear lubrication device, by arranging a plunger valve, the lubrication state of each gear tooth of the lubrication gear can be controlled, only the gear in a meshing state performs oil discharge lubrication, and other gear teeth not in the meshing state stop oil discharge lubrication, so that the lubrication oil is saved, and the generation of greasy dirt is effectively reduced.

The technical scheme of the utility model provides a lubrication gear which comprises a disc body with an oil storage cavity and a plurality of gear teeth uniformly distributed on the circumferential surface of the disc body;

the gear teeth are provided with gear tooth cavities communicated with the oil storage cavity, the gear teeth comprise two oppositely arranged gear tooth side walls, and a plunger valve is arranged on the gear tooth side wall of at least one side of each gear tooth;

the plunger valve comprises a valve body, a plunger and an elastic piece;

the valve body having a valve body passage in communication with the gear tooth cavity, the plunger slidably fitting in the valve body passage;

the elastic piece is connected between the plunger and the valve body and is used for driving the plunger to move towards the outer sides of the gear teeth;

when the plunger is in an initial state, the tail end of the plunger extends out of the outer side of the gear tooth side wall, and the plunger closes the valve body channel;

when the plunger is in a trigger state, the plunger moves towards the valve body channel, and the plunger opens the valve body channel.

In one alternative, the cross-sectional area of the valve body passage is gradually smaller, and the cross-sectional area of the plunger is also gradually smaller, in a direction from the oil inlet to the oil outlet of the valve body passage.

In one optional technical scheme, a side wall through hole with internal threads is formed in the side wall of the gear tooth;

the valve body is provided with external threads, and the valve body is in threaded connection with the side wall through hole.

In one alternative, plunger valves are respectively disposed on the side walls of the gear teeth on both sides of each gear tooth.

In one alternative, more than two plunger valves are arranged on the side walls of the gear teeth at intervals along the axial direction of the disc body.

In one optional technical scheme, a liquid level sensor is arranged in the oil storage cavity.

In one optional technical scheme, the disc body comprises an upper cover and a lower cover which are oppositely arranged;

the center of upper cover is provided with the go-between, be provided with on the lower cover with the grease nipple of oil storage chamber intercommunication.

In one optional technical scheme, a filter element is installed in the oil storage cavity, and the filter element is connected between the upper cover and the lower cover.

In one optional technical scheme, the inner surfaces of the upper cover and the lower cover are respectively provided with a limiting groove, and the end part of the filter element is inserted into the limiting grooves.

The technical scheme of the utility model also provides an open gear lubrication device, which comprises an oil storage tank, an oil pump, a fixed shaft and the lubrication gear according to any one of the technical schemes;

the disc body is in pivot connection with the fixed shaft, the oil storage tank is connected with the oil pump through a first oil pipe, and a second oil pipe is connected between the oil pump and the oil storage cavity.

By adopting the technical scheme, the method has the following beneficial effects:

according to the lubricating gear and the open gear lubricating device provided by the utility model, the plunger valve is arranged on the gear teeth of the lubricating gear and is used for controlling the lubricating state of each gear tooth of the lubricating gear, so that only the gear which is in a meshed state with the transmission gear on the lubricating gear can be lubricated by oil, and the other gear teeth stop lubricating by oil, so that lubricating oil is saved, and the generation of oil stains is effectively reduced.

Drawings

The present disclosure will become more readily understood with reference to the accompanying drawings. It should be understood that: the drawings are for illustrative purposes only and are not intended to limit the scope of the present utility model. In the figure:

FIG. 1 is a top view of a lubricated gear according to one embodiment of the present utility model;

FIG. 2 is a bottom view of the lubricated gear shown in FIG. 1;

FIG. 3 is a cross-sectional view of a lubricated gear according to an embodiment of the present utility model taken along an axial direction;

FIG. 4 is a radial cross-sectional view of a lubricated gear according to an embodiment of the present utility model;

FIG. 5 is a schematic view of the arrangement of the disc body, gear teeth, oil storage cavity and gear tooth cavity;

FIG. 6 is an enlarged view of two side gear tooth sidewalls with plunger valves mounted thereon, respectively;

FIG. 7 is an exploded view of a plunger valve;

FIG. 8 is a schematic view of the upper and lower covers with limiting grooves on the inner surfaces thereof, respectively;

fig. 9 is an assembly schematic diagram of an open gear lubrication device pair and a transmission gear according to an embodiment of the present utility model.

Detailed Description

Specific embodiments of the present utility model will be further described below with reference to the accompanying drawings. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

As shown in fig. 1-7 and fig. 9, a lubrication gear 1 provided in an embodiment of the present utility model includes a disc body 11 having an oil storage cavity 113 and a plurality of gear teeth 12 uniformly distributed on a circumferential surface of the disc body 11.

The gear teeth 12 have a gear tooth cavity 123 communicating with the oil storage cavity 113, the gear teeth 12 include two oppositely disposed gear tooth side walls 121, and a plunger valve 13 is disposed on the gear tooth side wall 121 on at least one side of each gear tooth 12.

The plunger valve 13 includes a valve body 131, a plunger 132, and an elastic member 133.

The valve body 131 has a valve body passage 1311 communicating with the gear tooth cavity 123, and the plunger 132 is slidably fitted in the valve body passage 1311.

An elastic member 133 is connected between the plunger 132 and the valve body 131, and the elastic member 133 is used to drive the plunger 132 to move toward the outside of the gear teeth 12.

When the plunger 132 is in the initial state, the tip end of the plunger 132 protrudes outside the gear tooth side wall 121, and the plunger 132 closes the valve body passage 1311.

When the plunger 132 is in the triggered state, the plunger 132 moves toward the valve body passageway 1311, and the plunger 132 opens the valve body passageway 1311.

The lubrication gear 1 provided by the present utility model is mainly used for providing lubrication for an open gear (a transmission gear 300 shown in fig. 9).

The utility model provides a lubrication gear 1 which comprises a disc body 11, a plurality of gear teeth 12 and a plurality of plunger valves 13.

The disc body 11 is a main body portion of the lubrication gear 1, and has an oil storage chamber 113 inside. The oil storage chamber 113 is used for storing lubricating oil. A plurality of gear teeth 12 are uniformly distributed on the circumferential surface of the disc body 11. Each of the gear teeth 12 has a gear tooth cavity 123 therein, and the gear tooth cavity 123 communicates with the oil reservoir 113 for lubrication oil flow.

On opposite sides of the gear teeth 12 are gear tooth side walls 121 with a gear tooth cavity 123 between the gear tooth side walls 121 on both sides. A plunger valve 13 is provided on each cog 12, and the plunger valve 13 may be disposed on one or both cog sidewalls 121 of the cog 12. The plunger valve 13 is used to control the outflow of the lubricant in the gear tooth cavity 123 such that only the plunger valve 13 on the gear tooth 12 engaged with the transmission gear 300 is opened and the lubricant is flowed out, whereas the plunger valve 13 on the gear tooth 12 not engaged with the transmission gear 300 is closed and the lubricant is not flowed out.

The plunger valve 13 includes a valve body 131, a plunger 132, and an elastic member 133. The valve body 131 is mounted in the gear tooth side wall 121. The valve body 131 is provided with a valve body channel 1311, an oil inlet 1312 of the valve body channel 1311 is communicated with the gear tooth cavity 123, and an oil outlet 1313 of the valve body channel 1311 is arranged on the outer surface of the gear tooth side wall 121.

A body portion of plunger 132 is slidably fitted in valve body passage 1311, and plunger 132 moves toward the outside of oil outlet 1313 to close oil outlet 1313. The plunger 132 may be a rubber stopper.

An elastic member 133 is connected between the plunger 132 and the valve body 131, and the elastic member 133 is used to drive the plunger 132 to move toward the outside of the gear teeth 12. The oil inlet 1312 is at a position having a limit protrusion 1314, one end of the elastic member 133 is connected to the limit protrusion 1314, and the other end is connected to the plunger 132. The elastic member 133 may be an expansion spring.

When the plunger 132 is in the initial state, the plunger 132 is moved toward the outside of the gear tooth side wall 121 by the elastic member 133, the tip of the plunger 132 protrudes outside the gear tooth side wall 121, and the plunger 132 closes the oil outlet 1313 of the valve body passage 1311.

When the gear teeth 12 of the lubrication gear 1 are meshed with the gear teeth of the transmission gear 300, the gear teeth of the transmission gear 300 press the plunger 132 to make the plunger 132 in the triggered state, the plunger 132 moves toward the valve body passageway 1311 against the force of the elastic member 133, and the plunger 132 opens the oil outlet 1313 of the valve body passageway 1311.

Therefore, the plunger valve 13 is configured on the gear teeth 12 of the lubrication gear 1 provided by the utility model and is used for controlling the lubrication state of each gear tooth 12 of the lubrication gear 1, so that only the gear which is in a meshing state with the transmission gear 300 on the lubrication gear 1 can be lubricated by oil, and the other gear teeth 12 stop the lubrication by oil, thereby saving the lubrication oil and effectively reducing the generation of oil stains.

In one embodiment, as shown in fig. 6-7, the cross-sectional area of the valve body passageway 1311 is tapered in a direction from the oil inlet 1312 to the oil outlet 1313 of the valve body passageway 1311, as is the cross-sectional area of the plunger 132.

That is, the valve body passageway 1311 is thicker at the end near the oil inlet 1312 and thinner at the end near the oil outlet 1313, and accordingly, the plunger 132 follows the valve body passageway 1311. So configured as to enable the direct closure of oil outlet 1313 when plunger 132 is extended outwardly; when the plunger 132 moves into the valve body passage 1311, the plunger 132 automatically opens the oil outlet 1313.

In one embodiment, as shown in FIGS. 5-7, gear tooth side walls 121 are provided with internally threaded side wall throughbores 122. The valve body 131 has external threads 1315 thereon, and the valve body 131 is threadedly coupled in the sidewall through-hole 122.

In this embodiment, the valve body 131 is screwed with the sidewall through hole 122 of the gear tooth sidewall 121, so as to be convenient for disassembly and replacement. When installed, a material tape may be wound around the valve body 131 to achieve a sealed connection.

In one embodiment, as shown in fig. 4-6, plunger valves 13 are respectively arranged on the side walls 121 of the two sides of each gear tooth 12, so that the two side surfaces of the gear tooth 12 of the transmission gear 300 can be synchronously lubricated, and the lubrication effect is improved.

In one embodiment, as shown in fig. 3, more than two plunger valves 13 are provided on the gear tooth side walls 121 at intervals along the axial direction of the disc body 11, so that more lubrication oil can be provided to each side surface of the gear teeth 12 of the transmission gear 300, and the lubrication effect can be improved.

In one embodiment, as shown in fig. 3 and 8, a level sensor 14 is installed in the oil storage chamber 113 for monitoring the level of lubricating oil in the oil storage chamber 113. The liquid level sensor 14 is in signal connection with the control device. When the lubricant is too high, a first signal is sent to stop filling the oil into the oil reservoir 113. When the oil is too low, a second signal is sent to start replenishing the oil in the oil reservoir 113.

In one embodiment, as shown in fig. 1-3 and 8, the disc body 11 includes an upper cover 111 and a lower cover 112 that are disposed opposite each other.

The center of the upper cover 111 is provided with a connecting ring 114, and the lower cover 112 is provided with a grease nipple 115 communicated with the grease storage cavity 113.

In this embodiment, the disc 11 includes an upper cover 111 and a lower cover 112, and the upper cover 111 and the lower cover 112 are respectively connected with the edge of the disc 11 by screws. The oil storage chamber 113 is located between the upper cover 111 and the lower cover 112. A connection ring 114 is provided at the center of the upper cover 111 for pivotally connecting the fixed shaft 5 shown in fig. 9. A filler neck 115 communicating with the reservoir 113 is provided on the lower cap 112 for connection with a filler pipe.

When the lubrication gear 1 is used, the upper cover 111 faces upward, the lower cover 12 faces downward, the connecting ring 114 of the upper cover 111 is mounted on the fixed shaft 5, and the connecting ring 114 can be connected with the fixed shaft 5 through a bearing, so that the lubrication gear 1 can rotate relative to the fixed shaft 5. The oil filling pipe is connected with the oil filling nozzle 115 on the lower cover 112, and the lubricating oil enters from the bottom of the oil storage cavity 113 and then steadily rises, so that the lubricating oil can be prevented from dripping from the top and splashing in the oil storage cavity 113.

In one embodiment, as shown in fig. 3-4, a filter element 15 is mounted in the oil storage chamber 113, and the filter element 15 is connected between the upper cover 111 and the lower cover 112. The filter element 15 is assembled in the oil reservoir 113 for filtering.

In one embodiment, as shown in fig. 3 and 8, the inner surfaces of the upper cover 111 and the lower cover 112 are provided with a limiting groove 116, and the end of the filter element 15 is inserted into the limiting groove 116, so that the filter element 15 is convenient to install and position.

As shown in fig. 9, an open gear lubrication device according to an embodiment of the present utility model includes an oil tank 2, an oil pump 3, a fixed shaft 5, and a lubrication gear 1 according to any of the foregoing embodiments.

The disc body 11 is pivotally connected with the fixed shaft 5, the oil storage tank 2 is connected with the oil pump 3 through the first oil pipe 6, and the second oil pipe 7 is connected between the oil pump 3 and the oil storage cavity 113.

The open gear lubrication device provided in this embodiment can provide automatic lubrication for the transmission gear 300. The transmission gear 300 is mounted on the frame 100 of the transmission device through a bearing 200.

The open gear lubrication device comprises a lubrication gear 1, an oil storage tank 2, an oil pump 3, a control device 4 and a fixed shaft 5.

For the structure, construction and working principle of the lubrication gear 1, please refer to the previous description of the lubrication gear 1, and the description is omitted herein.

The lubrication gear 1, the oil storage tank 2, the oil pump 3, the control device 4 and the fixed shaft 5 can be selectively arranged on the frame 100 or arranged on the outer side of the frame 100.

The rack 100 is provided with a hanging plate 101, and the upper end of the fixed shaft 5 is fixedly connected with the hanging plate 101. The lubrication gear 1 is pivotably mounted at the lower end of the fixed shaft 5, and specifically, the connection ring 114 is mounted at the lower end of the fixed shaft 5 through a bearing.

The oil outlet of the oil storage tank 2 is connected with the oil inlet of the oil pump 3 through a first oil pipe 6, the oil outlet of the oil pump 3 is connected with the oil inlet of the oil storage cavity 113 through a second oil pipe 7, and the second oil pipe 7 is connected with an oil filling nozzle 115 of the lower cover 112.

The oil pump 3 is connected to the control device 4 via a wire, and the control device 4 controls the switching of the oil pump 3.

The lubrication gear 1 is engaged with the transmission gear 300.

When the transmission gear 300 is driven to rotate, the lubrication gear 1 rotates with the transmission gear, the gear teeth of the transmission gear 300 press the plunger 132, so that the plunger 132 is in a trigger state, the plunger 132 can overcome the acting force of the elastic piece 133 to move towards the valve body channel 1311, the plunger 132 opens the oil outlet 1313 of the valve body channel 1311, and the lubricating oil flows out of the lubrication transmission gear 300.

The oil pump 3 can be selectively switched according to actual needs, and when the lubricating oil level in the oil storage cavity 113 is low, the oil pump 3 is selectively started to supplement oil into the oil storage cavity 113.

The above technical schemes can be combined according to the need to achieve the best technical effect.

The foregoing is only illustrative of the principles and preferred embodiments of the present utility model. It should be noted that several other variants are possible to those skilled in the art on the basis of the principle of the utility model and should also be considered as the scope of protection of the present utility model.

Claims

1. The lubrication gear is characterized by comprising a disc body with an oil storage cavity and a plurality of gear teeth uniformly distributed on the circumferential surface of the disc body;

the plunger valve comprises a valve body, a plunger and an elastic piece;

2. The lubricated gear recited in claim 1, wherein said valve body passageway has a cross-sectional area that is progressively smaller and said plunger has a cross-sectional area that is progressively smaller in a direction from an oil inlet to an oil outlet of said valve body passageway.

3. The lubricated gear recited in claim 1, wherein said gear tooth side walls are provided with side wall through holes having internal threads;

4. The lubricated gear recited in claim 1, wherein said plunger valves are disposed on said gear tooth sidewalls on both sides of each of said gear teeth.

5. The lubricated gear recited in claim 1, wherein more than two of said plunger valves are disposed on said gear tooth side walls at intervals along the axial direction of said disk body.

6. The lubricated gear recited in claim 1, wherein a liquid level sensor is mounted in said oil storage chamber.

7. The lubricated gear recited in claim 1, wherein said disc body comprises oppositely disposed upper and lower covers;

8. The lubricated gear recited in claim 7, wherein a filter element is mounted in said oil storage cavity, said filter element being connected between said upper cover and said lower cover.

9. The lubricated gear according to claim 8, wherein limiting grooves are formed in the inner surfaces of the upper cover and the lower cover, and wherein the end portions of the filter elements are inserted into the limiting grooves.

10. An open gear lubrication device comprising an oil reservoir, an oil pump, a stationary shaft, and the lubrication gear of any one of claims 1-9;