CN204226614U - A kind of Ventilated cap of speed reducer - Google Patents
A kind of Ventilated cap of speed reducer Download PDFInfo
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- CN204226614U CN204226614U CN201420616729.7U CN201420616729U CN204226614U CN 204226614 U CN204226614 U CN 204226614U CN 201420616729 U CN201420616729 U CN 201420616729U CN 204226614 U CN204226614 U CN 204226614U
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- ventilative
- speed reducer
- ventilated cap
- valve chamber
- valve seat
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Abstract
The utility model provides a kind of Ventilated cap of speed reducer, belongs to field of mechanical technique.It solve the problem how improving speed reducer working life.This speed reducer comprises casing, casing has hydraulic fluid port, Ventilated cap comprises ventilative valve seat, in ventilative valve seat, there is the uuper valve chamber and lower valve chamber that communicate with the external world, between uuper valve chamber and lower valve chamber, there is step surface, one end of ventilative valve seat has the external thread section be threaded with hydraulic fluid port, the other end of ventilative valve seat is embedded with ventilative valve gap, ventilative have space between valve gap and the fitting surface of ventilative valve seat, ventilative needle is provided with in uuper valve chamber, one end of ventilative needle has the guiding plug that can slide along lower valve chamber, the other end of ventilative needle has directional post, between directional post and guiding plug, there is crown of roll, crown of roll can be resisted against on step surface, directional post is arranged with spring, one end of spring is resisted against on crown of roll, the other end of spring is resisted against vent valve and covers, thus avoid oil sealing be subject to air pressure impact.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of speed reducer, particularly a kind of Ventilated cap of speed reducer.
Background technique
Speed reducer refers to the device playing coupling rotating speed and transmitting torque between prime mover and actuator, applies very extensive in modern mechanical.When operating continuously or stopping, the temperature of speed reducer inside can uprise, and will cause the gas expansion of speed reducer inside like this.And the pouring orifice of existing speed reducer generally all adopts plug cock to tighten, will oil sealing be washed out when speed reducer internal pressure is excessive, thus cause speed reducer normally not use; Or, plug cock is directly taken away for preventing speed reducer internal pressure excessive, leakage of oil or lubricant oil will be caused like this to be sprayed onto outside.
As Chinese patent [application number: 201420008196.4; Authorization Notice No.: CN203703091U] disclose a kind of speed reducer with novel plug cock, comprise body, body offers hydraulic fluid port, hydraulic fluid port offers internal thread, hydraulic fluid port is provided with novel plug cock; Novel plug cock is made up of outer plug, Nei Sai and spring section, the main body of outer plug is ring, the top of filling in outside is provided with outer, and outer is fastened on the body outside hydraulic fluid port, and the outside of outer plug is provided with outside thread, interior consent is offered in outer plug, interior consent is shoulder hole, and interior plug is the ladder post that lower end diameter is less than upper end diameter, is provided with interior plug in interior consent, the outer of outer plug is provided with spring section, and spring section connects outer plug and interior plug.
In the speed reducer of above-mentioned novel plug cock, when the gas expansion in speed reducer causes pressure too high, because oil port is blocked by plug cock, inside and the external world of speed reducer do not have gas-permeable channels, so just likely cause the oil sealing on speed reducer to be washed out; Meanwhile, if by outwarding winding plug cock or extract interior plug to be exhausted, the lubricant oil in such speed reducer just easily spills, thus causes reduce the working life of speed reducer.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of Ventilated cap of speed reducer, and the technical problem that the utility model solves is the working life of how to improve speed reducer.
The purpose of this utility model realizes by following technical proposal: a kind of Ventilated cap of speed reducer, described speed reducer comprises casing, described casing has hydraulic fluid port, it is characterized in that, described Ventilated cap comprises ventilative valve seat, there is in described ventilative valve seat the uuper valve chamber and lower valve chamber that communicate with the external world, between described uuper valve chamber and lower valve chamber, there is step surface, one end of described ventilative valve seat has the external thread section be threaded with described hydraulic fluid port, the other end of described ventilative valve seat is embedded with ventilative valve gap, between the fitting surface of described ventilative valve gap and described ventilative valve seat, there is space, ventilative needle is provided with in described uuper valve chamber, one end of described ventilative needle has the guiding plug that can slide along lower valve chamber, the other end of described ventilative needle has directional post, between described directional post and guiding plug, there is crown of roll, described crown of roll can be resisted against on described step surface, described directional post is arranged with spring, one end of described spring is resisted against on described crown of roll, the other end of described spring is resisted against described vent valve and covers.
The working principle of the Ventilated cap of this speed reducer is: by being arranged on hydraulic fluid port by Ventilated cap, under normal state, air pressure in speed reducer is lower than ambient pressure, now under the effect of pressing force of the spring, crown of roll is resisted against on step surface, make uuper valve chamber and lower valve chamber isolation, the gas in such negative booster does not just enter the external world by Ventilated cap, and Ventilated cap is in sealing state; When the air pressure in speed reducer is higher than ambient pressure, guiding plug is slowly pushed up from lower valve chamber under the influence of air pressure, until there is space in the cooperation place of the crown of roll of breathing freely on needle and step surface, now gas will enter uuper valve chamber along space, the external world is discharged to again via the space between uuper valve chamber and ventilative valve gap fitting surface, the gas of such speed reducer inside is just released, thus reduce the pressure of box house, the oil sealing avoided on speed reducer is impacted, and improves the working life of speed reducer; When the air pressure in speed reducer reduces gradually, under the effect of spring force, ventilative needle will be returned to original position, and such fluid also can not flow out from Ventilated cap via hydraulic fluid port; Meanwhile, in Ventilated cap working procedure, because the pressure of speed reducer inside is controlled, the fluid in speed reducer can not spray via Ventilated cap, avoids generation oil liquid leakage, thus speed reducer can normally be worked.
In the Ventilated cap of above-mentioned speed reducer, described ventilative valve gap comprises connecting end, and the outer surface of described connecting end has several conical surfaces, and described connecting end is embedded in described uuper valve chamber, has supplied gas and flow to extraneous space between the described conical surface and uuper valve chamber.By arranging a section conical surface at the outer surface of connecting end, making ventilative valve gap to be embedded on valve seat reliably, larger space can be provided again.
In the Ventilated cap of above-mentioned speed reducer, described connecting end has pilot hole, and described directional post can slide at described pilot hole, and one end of described spring is resisted against on described crown of roll, and the other end of described spring is resisted against the bottom of described pilot hole.Pilot hole structure being set by covering at vent valve, making ventilative needle and spring smooth and easy in the course of the work, can not offset.
In the Ventilated cap of above-mentioned speed reducer, described Ventilated cap is outside equipped with Ventilated cap rubber cushion, and the two ends of described Ventilated cap rubber cushion have connecting ring respectively, and described connecting ring is set on ventilative valve gap and ventilative valve seat respectively.For preventing, in transport, leakage of oil occurs, Ventilated cap rubber cushion is custom-designed protection O type circle.
In the Ventilated cap of above-mentioned speed reducer, described guiding plug is arranged with seal ring, described seal ring and guiding plug drive fit, described seal ring is between crown of roll and step surface and be resisted against on described crown of roll.When ventilative needle does not work, make the sealing between crown of roll and step surface better by seal ring, prevent leakage of oil, be conducive to the working life that improve speed reducer.
In the Ventilated cap of above-mentioned speed reducer, between described ventilative valve seat and described hydraulic fluid port, be provided with sealing rubber pad.When Ventilated cap install after, sealing rubber pad make Ventilated cap and hydraulic fluid port threaded connection place air tight.
Compared with prior art, the Ventilated cap of this speed reducer has the following advantages: because speed reducer is in the change operated with all can cause inside temperature that degree is different and air pressure when stopping, by arranging Ventilated cap on speed reducer, balance the atmospheric pressure that speed reducer is inside and outside, thus achieve the exchange of inside and outside gas, serve the effect of heat radiation and exhaust, thus the oil sealing avoided in speed reducer is subject to air pressure impact, effectively improves the working life of speed reducer.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Ventilated cap of this speed reducer.
Fig. 2 is the structural representation of ventilative valve seat in the Ventilated cap of this speed reducer.
Fig. 3 is the structural representation of ventilative valve gap in the Ventilated cap of this speed reducer.
Fig. 4 is the structural representation of ventilative needle in the Ventilated cap of this speed reducer.
Fig. 5 is the structural representation of Ventilated cap rubber cushion in the Ventilated cap of this speed reducer.
In figure, 1, ventilative valve seat; 11, uuper valve chamber; 12, lower valve chamber; 13, step surface; 14, external thread section; 2, ventilative valve gap; 21, connecting end; 22, the conical surface; 23, pilot hole; 3, ventilative needle; 31, guiding plug; 32, directional post; 33, crown of roll; 4, spring; 5, Ventilated cap rubber cushion; 51, connecting ring; 6, seal ring; 7, sealing rubber pad; 8, space.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
This Ventilated cap comprises ventilative valve seat 1, uuper valve chamber 11, lower valve chamber 12, step surface 13, external thread section 14, ventilative valve gap 2, connecting end 21, the conical surface 22, pilot hole 23, ventilative needle 3, guiding plug 31, directional post 32, crown of roll 33, spring 4, Ventilated cap rubber cushion 5, connecting ring 51, seal ring 6, sealing rubber pad 7, space 8.
Specifically, as shown in Figures 1 to 4, this speed reducer comprises casing, casing has hydraulic fluid port, and Ventilated cap comprises ventilative valve seat 1, has the valve pocket communicated with the external world in ventilative valve seat 1, valve pocket is divided into uuper valve chamber 11 and lower valve chamber 12, have step surface 13 between uuper valve chamber 11 and lower valve chamber 12, one end of ventilative valve seat 1 has the external thread section 14 be threaded with hydraulic fluid port, and the other end of ventilative valve seat 1 is embedded with ventilative valve gap 2.Air tight in order to ensure Ventilated cap installation rear thread place, breathe freely and be provided with sealing rubber pad 7 between valve seat 1 and hydraulic fluid port.Ventilative valve gap 2 comprises connecting end 21, the outer surface of connecting end 21 has several conical surfaces 22, connecting end 21 is embedded in uuper valve chamber 11, there is between the conical surface 22 and uuper valve chamber 11 supplied gas and flow to extraneous space 8, ventilative needle 3 is provided with in uuper valve chamber 11, ventilative needle 3 one end has the guiding plug 31 closed with lower valve chamber 12 matching form, guiding plug 31 can slide along lower valve chamber 12, the other end of ventilative needle 3 has directional post 32, there is between directional post 32 and guiding plug 31 crown of roll 33, crown of roll 33 can be resisted against on step surface 13, guiding plug 31 is arranged with seal ring 6, seal ring 6 is between crown of roll 33 and step surface 13.
Directional post 32 is arranged with spring 4, connecting end 21 has pilot hole 23, directional post 32 can slide at pilot hole 23, and one end of spring 4 is resisted against on crown of roll 33, and the other end of spring 4 is resisted against the bottom of pilot hole 23, Ventilated cap is outside equipped with Ventilated cap rubber cushion 5, as shown in Figure 5, the two ends of Ventilated cap rubber cushion 5 have connecting ring 51 respectively, and connecting ring 51 is set on ventilative valve gap 2 and ventilative valve seat 1 respectively, wherein, Ventilated cap rubber cushion 5 is for preventing leakage of oil and custom-designed protection O type circle in transport.
The using process of the Ventilated cap of this speed reducer is as follows: during use, first the artificial external force that applies is adopted to be removed by Ventilated cap rubber cushion 5, thus the needle 3 that ensures to breathe freely when normal use can be opened, this Ventilated cap mainly contains two working staties, when the pressure in box body of speed reducer is greater than outside pressure, Ventilated cap opens exhaust, and now Ventilated cap is in exhaust condition; When the pressure in casing is less than outside pressure, Ventilated cap is in closed condition, and hydraulic fluid port sealing is isolated from the outside.In addition, Ventilated cap is as being mainly used in machinery and the outside door carrying out gas exchanges, and being also applicable to motor etc. needs and the extraneous major part machinery carrying out gas exchanges.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ the term such as ventilative valve seat 1, uuper valve chamber 11, lower valve chamber 12, step surface 13, external thread section 14, ventilative valve gap 2, connecting end 21, the conical surface 22, pilot hole 23, ventilative needle 3, guiding plug 31, directional post 32, crown of roll 33, spring 4, Ventilated cap rubber cushion 5, connecting ring 51, seal ring 6, sealing rubber pad 7, space 8 herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (6)
1. the Ventilated cap of a speed reducer, described speed reducer comprises casing, described casing has hydraulic fluid port, it is characterized in that, described Ventilated cap comprises ventilative valve seat (1), in described ventilative valve seat (1), there is the uuper valve chamber (11) communicated with the external world and lower valve chamber (12), there is between described uuper valve chamber (11) and lower valve chamber (12) step surface (13), one end of described ventilative valve seat (1) has the external thread section (14) be threaded with described hydraulic fluid port, the other end of described ventilative valve seat (1) is embedded with ventilative valve gap (2), between described ventilative valve gap (2) and the fitting surface of described ventilative valve seat (1), there is space (8), ventilative needle (3) is provided with in described uuper valve chamber (11), one end of described ventilative needle (3) has the guiding plug (31) that can slide along lower valve chamber (12), the other end of described ventilative needle (3) has directional post (32), there is between described directional post (32) and guiding plug (31) crown of roll (33), described crown of roll (33) can be resisted against on described step surface (13), described directional post (32) is arranged with spring (4), one end of described spring (4) is resisted against on described crown of roll (33), the other end of described spring (4) is resisted against on described ventilative valve gap (2).
2. the Ventilated cap of speed reducer according to claim 1, it is characterized in that, described ventilative valve gap (2) comprises connecting end (21), the outer surface of described connecting end (21) has several conical surfaces (22), described connecting end (21) is embedded in described uuper valve chamber (11), has supplied gas and flow to extraneous space (8) between the described conical surface (22) and uuper valve chamber (11).
3. the Ventilated cap of speed reducer according to claim 2, it is characterized in that, described connecting end (21) has pilot hole (23), described directional post (32) can slide at described pilot hole (23), one end of described spring (4) is resisted against on described crown of roll (33), and the other end of described spring (4) is resisted against the bottom of described pilot hole (23).
4. the Ventilated cap of the speed reducer according to claim 1 or 2 or 3, it is characterized in that, described Ventilated cap is outside equipped with Ventilated cap rubber cushion (5), the two ends of described Ventilated cap rubber cushion (5) have connecting ring (51) respectively, and described connecting ring (51) is set on ventilative valve gap (2) and ventilative valve seat (1) respectively.
5. the Ventilated cap of the speed reducer according to claim 1 or 2 or 3, it is characterized in that, described guiding plug (31) is arranged with seal ring (6), described seal ring (6) is positioned between crown of roll (33) and step surface (13).
6. the Ventilated cap of the speed reducer according to claim 1 or 2 or 3, is characterized in that, is provided with sealing rubber pad (7) between described ventilative valve seat (1) and described hydraulic fluid port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420616729.7U CN204226614U (en) | 2014-10-23 | 2014-10-23 | A kind of Ventilated cap of speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420616729.7U CN204226614U (en) | 2014-10-23 | 2014-10-23 | A kind of Ventilated cap of speed reducer |
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| Publication Number | Publication Date |
|---|---|
| CN204226614U true CN204226614U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420616729.7U Active CN204226614U (en) | 2014-10-23 | 2014-10-23 | A kind of Ventilated cap of speed reducer |
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| CN (1) | CN204226614U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605986A (en) * | 2017-09-05 | 2018-01-19 | 安徽江淮汽车集团股份有限公司 | A kind of clutch slave cylinder assembly deflation structure |
| CN108223768A (en) * | 2018-03-19 | 2018-06-29 | 新乡平特滤清器有限公司 | A kind of hub reduction gear breather |
-
2014
- 2014-10-23 CN CN201420616729.7U patent/CN204226614U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107605986A (en) * | 2017-09-05 | 2018-01-19 | 安徽江淮汽车集团股份有限公司 | A kind of clutch slave cylinder assembly deflation structure |
| CN108223768A (en) * | 2018-03-19 | 2018-06-29 | 新乡平特滤清器有限公司 | A kind of hub reduction gear breather |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |