CN207620722U - A kind of rock bit with novel air cooling duct - Google Patents
A kind of rock bit with novel air cooling duct Download PDFInfo
- Publication number
- CN207620722U CN207620722U CN201721644420.9U CN201721644420U CN207620722U CN 207620722 U CN207620722 U CN 207620722U CN 201721644420 U CN201721644420 U CN 201721644420U CN 207620722 U CN207620722 U CN 207620722U
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- gear wheel
- bearing
- gas
- gas vent
- rock bit
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Abstract
A kind of rock bit with novel air cooling duct, it is characterised in that：Rock bit is internally provided with gas channel, and multiple gas vents are additionally provided in rock bit, and each gas vent runs through gear wheel and is connected to gas channel；Gas vent is opened in an at least toothrow slot for gear wheel, and when offering multiple gas vents in the toothrow slot, each gas vent etc. point setting；Gas vent avoids the working face of bearing through the position of gear wheel, while avoiding the tooth on gear wheel surface.Compared to existing technologies, the utility model increases the outlet of compressed air within the bearing, and ability of the compressed air with bearing running heat is made substantially to be reinforced, and bearing accumulation high temperature can be effectively prevented, to improve the service life of bearing.
Description
Technical field
The utility model is related to rock bit technical field more particularly to a kind of gear wheels with novel air cooling duct
Effective heat dissipation can be obtained in the bearing of drill bit, the drill bit.
Background technology
Rock bit can be divided into sealing drill bit and non-tight drill bit according to bearing arrangement difference.Wherein, as shown in Figure 1 and 2,
For common non-tight drill bit, the drill bit includes bit leg 1 and gear wheel 2, and the two is connected by bearing 3.In non-tight bit bearing 3
It is connected with the compressed air for cooling bearing 3, the compressed air is via pushing off the slag pipe 4, long stomata 5, plug pin hole 6, axial venthole
7, the gas channels such as left and right venthole 8, thrust surface air drain 9 enter bearing 3, and pass through bearing roller 10（Ball, roller）It
Between gap, external environment is finally flow to by C points face air drain 11（Arrow in figure is seen in flow direction）.By compressed air via gas
The process that bearing 3 is passed in and out in circulation road realizes the cooling to bearing 3 with the heat generated when working with bearing running 3.
The above-mentioned prior art has the following disadvantages：Ventilation device is single, and air-flow trend is simple, and the outlet of compressed air only has
C points face air drain 11 close to 12 lower end of big axis, far from thrust surface 13 and small axis 14, there are atmospheric pressure losts in venting process, take away
The ability of 14 heat of bearing thrust face 13 and small axis is limited.
Therefore, above-mentioned the shortcomings of the prior art how is solved, is become as the class to be researched and solved of the utility model
Topic.
Invention content
The purpose of this utility model is to provide a kind of rock bit with novel air cooling duct.
In order to achieve the above objectives, the technical solution adopted in the utility model is：
A kind of rock bit with novel air cooling duct, including bit leg and gear wheel, the gear wheel are rotatably dispose in
On the bearing of bit leg, the outer surface of gear wheel has tooth socket；The bearing includes the small axis of stepped setting and big axis, medium and small
The end face of axis and the end face of big axis are thrust surface；Wherein：
The rock bit is internally provided with gas channel, which is opened in the ontology, described big of the bit leg
In axis and the small axis, and it is formed in the fit-up gap of the bearing and the gear wheel；Wherein, in the rock bit also
Equipped with multiple gas vents, each gas vent runs through the gear wheel and is connected to the gas channel；
The gas vent is opened in an at least toothrow slot for the gear wheel, and is worked as in the toothrow slot and offered multiple exhausts
Kong Shi, each described gas vent etc. point setting；Wherein, the gas vent avoids the work of bearing through the position of the gear wheel
Face, while avoiding the tooth on the gear wheel surface.
Related content in above-mentioned technical proposal is explained as follows：
1. in said program, " gas vent avoids the working face of bearing through the position of the gear wheel " does not influence
The normal work of bearing, " while avoiding the tooth on the gear wheel surface ", does not influence the cloth tooth of gear wheel and engaging for carbide button.
2. in said program, the gas channel is connected to a high-pressure air source, gas channel is wrapped successively by airflow direction sequence
Pushing off the slag pipe, long stomata, plug pin hole are included, and shaft is punished to venthole and left and right venthole in the plug pin hole, then flows into institute
In the fit clearance for stating thrust surface and the gear wheel, by the gap of each bearing roller circumference, finally by each exhaust
Hole and C points face air drain flow to external environment.
3. in said program, the gas vent is located in gear wheel tooth socket, and is connected at the thrust surface and the small axis
Gas channel.Since the gas vent and the thrust surface and the small wheelbase are close from relatively, compressed air passes through air-flow
The heat generated at thrust surface and small axis can be blown out bearing, the heat that big axis generates by channel after entering bearing via the gas vent
Bearing can be blown out via original C points face air drain.
4. in said program, the gas vent is opened in each toothrow slot of the gear wheel, and is opened up in each toothrow slot
There are multiple gas vents.The quantity of gas vent in each toothrow slot is preferred with 3~6, also can be other quantity, each gas vent it is straight
Diameter is 3~5mm, also can be other sizes.
The operation principle and advantage of the utility model are as follows：
A kind of rock bit with novel air cooling duct of the utility model, is internally provided with gas channel, gear wheel
Multiple gas vents are additionally provided on drill bit, each gas vent runs through gear wheel and is connected to gas channel；Gas vent is opened in gear wheel extremely
In a few toothrow slot, and when offering multiple gas vents in the toothrow slot, each gas vent etc. point setting；Gas vent runs through gear wheel
Position avoid the working face of bearing, while avoiding the tooth on gear wheel surface.
Compared to existing technologies, the utility model increases the outlet of compressed air within the bearing, makes compressed air band
The ability of bearing running heat is substantially reinforced, and bearing accumulation high temperature can be effectively prevented, to improve the service life of bearing.
Description of the drawings
Attached drawing 1 is the cross-sectional view of rock bit；
Attached drawing 2 is A-A profile structure diagram in Fig. 1（The prior art）；
Attached drawing 3 is the cross-sectional view of the utility model embodiment；
Attached drawing 4 is the schematic top plan view of the utility model embodiment gear wheel.
In the figures above：1. bit leg；2. gear wheel；3. bearing；4. pushing off the slag pipe；5. long stomata；6. plug pin hole；7. axial ventilation
Hole；8. or so venthole；9. thrust surface air drain；10. bearing roller；11.C points face air drain；12. big axis；13. thrust surface；14.
Small axis；15. tooth socket；16. gas channel；17. gas vent；18. tooth.
Specific implementation mode
The utility model is further described with reference to the accompanying drawings and embodiments：
Embodiment：Shown in attached drawing 1,3,4, a kind of rock bit with novel air cooling duct, including bit leg 1
With gear wheel 2, the gear wheel 2 is rotatably dispose on the bearing 3 of bit leg 1, and the outer surface of gear wheel 2 has tooth socket 15；The bearing 3 wraps
Include the small axis 14 and big axis 12 of stepped setting, the end face of the end face of medium and small axis 14 and big axis 12 is thrust surface 13；
Wherein：
The rock bit is internally provided with gas channel 16, which is opened in the ontology of the bit leg 1, institute
It states in big axis 12 and the small axis 14, and is formed in the fit-up gap of the bearing 3 and the gear wheel 2；Wherein, the tooth
Multiple gas vents 17 are additionally provided on wheel drill bit, each gas vent 17 runs through the gear wheel 2 and is connected to the gas channel 16；
As shown in figure 4, the gas vent 17 is opened in two rows of tooth sockets 15 of the gear wheel 2, opened up in each toothrow slot 15
There are three gas vent 17, the equal point settings of each gas vent 17；Wherein, as shown in figure 3, the gas vent 17 runs through the gear wheel
The working face of bearing 3 is avoided in 2 position, does not influence the normal work of bearing 3, while avoiding the tooth 18 on 2 surface of the gear wheel,
The cloth tooth of gear wheel 2 and engaging for carbide button 18 are not influenced.
The gas channel 16 be connected to a high-pressure air source, gas channel 16 by airflow direction sequence successively include pushing off the slag pipe 4,
Long stomata 5, plug pin hole 6, and shaft is punished to venthole 7 and left and right venthole 8 in the plug pin hole 6, then flow into described stop
In pushing surface 13 and the fit clearance of the gear wheel 2, by the gap of 10 circumference of each bearing roller, finally by each exhaust
Hole 17 and C points face air drain 11 flow to external environment.
Wherein, the gas vent 17 is located in gear wheel tooth socket 15, and is connected at the thrust surface 13 and the small axis 14
Gas channel.Since the gas vent 17 and the thrust surface 13 and the small axis 14 are apart from relatively closely, compressed air is logical
Bearing can be blown out by the heat generated at thrust surface 13 and small axis 14 via the gas vent 17 by crossing after gas channel 16 enters bearing 3
3, the heat that big axis 12 generates can blow out bearing 3 via original C points face air drain 11.
Wherein, the diameter of gas vent 17 is preferred with 3~5mm, but is not limited to this size range.
A kind of rock bit with novel air cooling duct of the utility model, is internally provided with gas channel, gear wheel
Multiple gas vents are additionally provided on drill bit, each gas vent runs through gear wheel and is connected to gas channel；Gas vent is opened in gear wheel extremely
In a few toothrow slot, and when offering multiple gas vents in the toothrow slot, each gas vent etc. point setting；Gas vent runs through gear wheel
Position avoid the working face of bearing, while avoiding the tooth on gear wheel surface.Compared to existing technologies, the utility model increases
The outlet of compressed air within the bearing, makes ability of the compressed air with bearing running heat substantially be reinforced, can effectively prevent
Only bearing accumulates high temperature, to improve the service life of bearing.
Above-described embodiment is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement according to this, the scope of protection of the utility model can not be limited with this.
It is all according to equivalent change or modification made by the spirit of the present invention essence, should all cover the scope of protection of the utility model it
It is interior.
Claims (3)
1. a kind of rock bit with novel air cooling duct, including bit leg and gear wheel, the gear wheel are rotatably dispose in tooth
On the bearing of the palm, the outer surface of gear wheel has tooth socket；The bearing includes the small axis of stepped setting and big axis, medium and small axis
End face and the end face of big axis be thrust surface；It is characterized in that：
The rock bit is internally provided with gas channel, the gas channel be opened in the ontology of the bit leg, the big axis with
And in the small axis, and it is formed in the fit-up gap of the bearing and the gear wheel；Wherein, it is additionally provided in the rock bit
Multiple gas vents, each gas vent run through the gear wheel and are connected to the gas channel；
The gas vent is opened in an at least toothrow slot for the gear wheel, and is worked as in the toothrow slot and offered multiple gas vents
When, each described gas vent etc. point setting；Wherein, the gas vent avoids the working face of bearing through the position of the gear wheel,
The tooth on the gear wheel surface is avoided simultaneously.
2. rock bit according to claim 1, it is characterised in that：The gas vent is located in gear wheel tooth socket, and even
Lead to the gas channel at the thrust surface and the small axis.
3. rock bit according to claim 1, it is characterised in that：The gas vent is opened in each toothrow of the gear wheel
In slot, and multiple gas vents are offered in each toothrow slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721644420.9U CN207620722U (en) | 2017-11-30 | 2017-11-30 | A kind of rock bit with novel air cooling duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721644420.9U CN207620722U (en) | 2017-11-30 | 2017-11-30 | A kind of rock bit with novel air cooling duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207620722U true CN207620722U (en) | 2018-07-17 |
Family
ID=62824713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721644420.9U Active CN207620722U (en) | 2017-11-30 | 2017-11-30 | A kind of rock bit with novel air cooling duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207620722U (en) |
-
2017
- 2017-11-30 CN CN201721644420.9U patent/CN207620722U/en active Active
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| GR01 | Patent grant |