CN215861987U - Worm gear box capable of continuously adjusting opening indication - Google Patents
Worm gear box capable of continuously adjusting opening indication Download PDFInfo
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- CN215861987U CN215861987U CN202122281796.0U CN202122281796U CN215861987U CN 215861987 U CN215861987 U CN 215861987U CN 202122281796 U CN202122281796 U CN 202122281796U CN 215861987 U CN215861987 U CN 215861987U
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- worm gear
- worm
- rotating shaft
- sleeve
- worm wheel
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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model relates to a worm gear box capable of continuously adjusting opening indication, which comprises a box body, a box cover, a worm gear and a worm, wherein a central hole of a worm gear rotating shaft is connected with a valve rod of a valve, and an indication board is fixedly arranged at the upper end of the worm gear rotating shaft; the method is characterized in that: the indicator adopts a sleeve type structure, a pointer is installed in the upper plane of the sleeve, a cylinder at the lower part of the sleeve is movably sleeved on the outer circular surface of the worm wheel rotating shaft, at least two radial installing holes are uniformly arranged in the circumferential direction of the sleeve, an annular groove is arranged on the outer circular surface of the worm wheel rotating shaft, the upper groove wall of the annular groove is an annular inclined surface which is downwards inclined, a screw with an end conical surface is pressed on the annular inclined surface of the annular groove through the radial installing holes, and the indicator is arranged at the upper end of the worm wheel rotating shaft in a wedging manner. The sign can be adjusted in succession in worm wheel pivot circumferencial direction, makes the aperture indicated value and the actual opening value of valve unanimous of sign, and the aperture indicating accuracy is high.
Description
Technical Field
The present invention relates to a worm gear. The utility model is suitable for the transmission device of the right-angle rotary valve.
Background
The worm gear case is generally used in a valve transmission device and generally comprises a case body, a case cover, a worm gear and a worm, a closed oil cavity is formed between the case body and the case cover, the worm gear and the worm are arranged in the oil cavity between the case body and the case cover, and O-shaped sealing rings are arranged between the outer circular surfaces of worm gear shafts at the upper end and the lower end of the worm gear and the inner circular walls of the case cover and the case body respectively to prevent engine oil in the oil cavity from leaking. An indication board is fixedly arranged on the upper end face of the worm wheel shaft, and a pointer on the indication board is matched with a dial on the plane of the upper end face of the box cover to form an opening indicator. The main disadvantages are: the sign generally adopts bolt fixed mounting at the up end of worm-wheel axle, and the machining error and the assembly error of parts such as box, case lid, worm wheel, worm easily cause the aperture indicated value between the calibrated scale on pointer and the case lid on the instruction dish and the actual aperture value of valve to produce the error, and aperture indicating accuracy is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides the worm gear case which can continuously adjust the indication board in the circumferential direction, has accurate opening indication and can continuously adjust the opening indication.
The technical scheme of the utility model comprises a box body, a box cover, a worm wheel and a worm, wherein a central hole of a worm wheel rotating shaft is connected with a valve rod of a valve, and an indicating plate is fixedly arranged at the upper end of the worm wheel rotating shaft; the method is characterized in that: the indicator adopts a sleeve type structure, a pointer is installed in the upper plane of the sleeve, a cylinder at the lower part of the sleeve is movably sleeved on the outer circular surface of the worm wheel rotating shaft, at least two radial installing holes are uniformly arranged in the circumferential direction of the sleeve, an annular groove is arranged on the outer circular surface of the worm wheel rotating shaft, the upper groove wall of the annular groove is an annular inclined surface which is downwards inclined, a screw with an end conical surface is pressed on the annular inclined surface of the annular groove through the radial installing holes, and the indicator is arranged at the upper end of the worm wheel rotating shaft in a wedging manner.
Preferably, an O-shaped rubber sealing ring is arranged between the upper end surface of the worm wheel rotating shaft and the sleeve.
Compared with the prior art, the utility model has the beneficial effects that: the indicator adopts telescopic structure, is installed on the annular inclined plane of the outer disc ring channel of worm wheel pivot through the radial mounting hole wedge on the sleeve by the screw, and the indicator can be adjusted in succession in worm wheel pivot circumferencial direction, makes the aperture indicated value of indicator and the actual aperture value of valve unanimous, and aperture indicating accuracy is high.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is an enlarged view of a portion of FIG. 1 at I according to the present invention.
Detailed Description
The worm gear box capable of continuously adjusting opening indication as shown in fig. 1 comprises a box body 1, a box cover 2, a worm gear 4 and a worm 3, wherein a central hole of a worm gear rotating shaft 5 is connected with a valve rod of a valve to drive the valve rod to rotate so as to realize the opening and closing operation of the valve, an indication board 6 is fixedly arranged at the upper end of the worm gear rotating shaft 5, the indication board 6 is matched with a dial scale on the upper end surface of the box cover 2 to form the opening indication of the valve, the box body 1 and the box cover 2 form an oil cavity, and the worm gear 4 and the worm 3 are meshed with each other and arranged in the oil cavity; the method is characterized in that: sign 6 adopts telescopic structure, install the pointer on the sleeve in the plane, sleeve lower part drum suit is at 5 outer disc of worm wheel pivot, evenly set up two at least radial mounting holes at the sleeve circumferencial direction, set up the ring channel at 5 outer disc of worm wheel pivot, the last cell wall of ring channel is the annular inclined plane of downward sloping, screw 7 that the tip has the conical surface passes through radial mounting hole roof pressure on the annular inclined plane of ring channel, install sign 6 wedging in the upper end of worm wheel pivot 5, when loosening screw 7, sign 6 can be rotatory by 5 circumferencial directions of worm wheel pivot, adjust in succession sign 6, realize that the aperture indicated value of sign 6 is unanimous with the actual opening value of valve.
An O-shaped rubber sealing ring is arranged between the upper end surface of the worm wheel rotating shaft 5 and the sleeve to realize the sealing and flexible connection between the worm wheel rotating shaft 5 and the sleeve, as shown in figure 2.
Claims (2)
1. A worm gear box capable of continuously adjusting opening indication comprises a box body (1), a box cover (2), a worm gear (4) and a worm (3), wherein a central hole of a worm gear rotating shaft (5) is connected with a valve rod of a valve, and an indication board (6) is fixedly arranged at the upper end of the worm gear rotating shaft (5); the method is characterized in that: sign (6) adopt telescopic structure, install the pointer in the plane on the sleeve, sleeve lower part drum suit is in worm wheel pivot (5) excircle face, evenly set up two at least radial mounting holes in the sleeve circumferencial direction, set up the ring channel at worm wheel pivot (5) excircle face, the last cell wall of ring channel is the annular inclined plane of downward sloping, screw (7) that the tip has the conical surface are through radial mounting hole roof pressure on the annular inclined plane of ring channel, install sign (6) wedge tight in the upper end of worm wheel pivot (5).
2. The worm gear case with continuously adjustable opening indication as claimed in claim 1, wherein: an O-shaped rubber sealing ring is arranged between the upper end surface of the worm wheel rotating shaft (5) and the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122281796.0U CN215861987U (en) | 2021-09-22 | 2021-09-22 | Worm gear box capable of continuously adjusting opening indication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122281796.0U CN215861987U (en) | 2021-09-22 | 2021-09-22 | Worm gear box capable of continuously adjusting opening indication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215861987U true CN215861987U (en) | 2022-02-18 |
Family
ID=80255364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122281796.0U Active CN215861987U (en) | 2021-09-22 | 2021-09-22 | Worm gear box capable of continuously adjusting opening indication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215861987U (en) |
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2021
- 2021-09-22 CN CN202122281796.0U patent/CN215861987U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220518 Address after: 325102 Dongou Industrial Zone, Oubei street, Yongjia County, Wenzhou, Zhejiang Patentee after: ZHEJIANG DAGONG VALVE DRIVE Co.,Ltd. Address before: 325102 Dongou Industrial Zone, Oubei street, Yongjia County, Wenzhou, Zhejiang Patentee before: Zhejiang Dagong Drive Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right |