CN212900042U

CN212900042U - Idle-run anti-false-open type single-stage worm wheel

Info

Publication number: CN212900042U
Application number: CN202021848668.9U
Authority: CN
Inventors: 吴志超
Original assignee: Quanzhou Chaoyue Worm Gear Valve Co Ltd
Current assignee: Quanzhou Chaoyue Worm Gear Valve Co Ltd
Priority date: 2020-08-29
Filing date: 2020-08-29
Publication date: 2021-04-06
Anticipated expiration: 2030-08-29

Abstract

An idle rotation anti-false-opening single-stage worm wheel comprises a single-stage worm wheel box body, a worm wheel, an idle rotation anti-false-opening rotating structure and a hand wheel, wherein the worm and the worm wheel are arranged in the single-stage worm wheel box body and are connected in a meshing manner, one end of the idle rotation anti-false-opening rotating structure is arranged in the single-stage worm wheel box body and is connected with the worm, the other end of the idle rotation anti-false-opening rotating structure is connected with the hand wheel, the idle rotation anti-false-opening rotating structure comprises a rotating shaft and a positioning shaft, a rotation limiting ring is arranged at the edge of the end face of the rotating shaft, a rotation limiting groove is arranged at the edge of the end face of the positioning shaft, the rotation limiting ring is rotationally arranged in the rotation limiting groove, a clamping groove communicated with the clamping groove is arranged at the middle part of the end face of the positioning shaft, effectively improving the convenience of use.

Description

Idle-run anti-false-open type single-stage worm wheel

Technical Field

The utility model relates to an idle running prevents mistake open-type single-stage worm wheel belongs to the single-stage worm wheel field.

Background

The single-stage worm wheel is also called a single-stage worm wheel case and is assembled on a valve to play a role in controlling the positioning of a valve switch, the existing hand wheel installed on the single-stage worm wheel outdoors is often locked through an iron chain or is detached to play a role in preventing false opening, and the single-stage worm wheel is inconvenient to use subsequently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art exists, the utility model aims at providing an idle running prevents mistake open-type single-stage worm wheel to solve the current hand wheel of installing on open air single-stage worm wheel and often can pin through the iron chain, perhaps demolish the hand wheel, in order to play the effect of preventing the mistake and open, during follow-up use, comparatively inconvenient problem.

In order to achieve the above purpose, the present invention is realized by the following technical solution: an idle rotation anti-false-opening single-stage worm wheel structurally comprises a single-stage worm wheel box body, a worm wheel, an idle rotation anti-false-opening rotating structure and a hand wheel, wherein the worm and the worm wheel are arranged in the single-stage worm wheel box body and are connected in a meshed mode, one end of the idle rotation anti-false-opening rotating structure is arranged in the single-stage worm wheel box body and is connected with the worm, the other end of the idle rotation anti-false-opening rotating structure is connected with the hand wheel, the idle rotation anti-false-opening rotating structure comprises a rotating shaft and a positioning shaft, a rotation limiting ring is arranged on the edge of the end face of the rotating shaft, a rotation limiting groove is arranged on the edge of the end face of the positioning shaft, the rotation limiting ring is rotatably arranged in the rotation limiting groove, a clamping groove is formed in the middle of the end face of the rotating shaft, a clamping block is slidably arranged in the expansion groove, a rack is arranged, the end part of the rotating rod, which is close to the telescopic groove, is provided with a gear, and the gear is meshed with the rack.

Furthermore, the rotating shaft is connected with the hand wheel in a bolt fixing mode.

Furthermore, the cross section of the clamping block is of a polygonal structure, and when the clamping block extends into the clamping groove, the positioning shaft positions and limits the rotating shaft through the clamping block.

Further, the length of the clamping block is twice of the depth of the clamping groove.

Furthermore, the cross section of the rotary limiting ring is of a T-shaped structure.

Furthermore, a lock hole is formed in the end part, far away from the telescopic groove, of the rotating rod.

The utility model has the advantages that: the idle running anti-misopening structure is arranged on the rotating rod of the hand wheel, so that the idle running mode of the hand wheel can be directly opened or released through a key, and the use convenience is effectively improved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic structural view of an idle anti-misopening single-stage worm wheel according to the present invention;

FIG. 2 is a schematic view of a restricted mode configuration of an idle anti-false open rotation configuration;

fig. 3 is a schematic structural view of an idle mode of an idle anti-false-opening rotation structure.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

Referring to fig. 1, 2 and 3, the present invention provides a technical solution of idle mis-open prevention single-stage worm gear: the structure of the device comprises a single-stage worm wheel box body 1, a worm 2, a worm wheel 3, an idle rotation anti-false-opening rotating structure 4 and a hand wheel 5, wherein the worm 2 and the worm wheel 3 are arranged in the single-stage worm wheel box body 1, the worm 2 and the worm wheel 3 are connected in a meshed manner, one end of the idle rotation anti-false-opening rotating structure 4 is arranged in the single-stage worm wheel box body 1 and connected with the worm 2, the other end of the idle rotation anti-false-opening rotating structure 4 is connected with the hand wheel 5, the idle rotation anti-false-opening rotating structure 4 comprises a rotating shaft 401 and a positioning shaft 402, the end face edge of the rotating shaft 401 is provided with a rotation limiting ring 403, the end face edge of the positioning shaft 402 is provided with a rotation limiting groove 404, the rotation limiting ring 403 is rotatably arranged in the rotation limiting groove 404, the middle part of the end face of the rotating shaft 401 is provided with a clamping groove, the positioning device is characterized by further comprising a rotating rod 409, the rotating rod 409 is rotatably matched into the telescopic groove 406 through the outer wall of the positioning shaft 402, a gear 410 is arranged at the end portion, close to the telescopic groove 406, of the rotating rod 409, the gear 410 is meshed with the rack 408, the rotating shaft 401 is connected with the hand wheel 5 in a bolt fixing mode, the cross section of the clamping block 407 is of a polygonal structure, when the clamping block 407 extends into the clamping groove 405, the positioning shaft 402 positions and limits the rotating shaft 401 through the clamping block 407, the length of the clamping block 407 is twice of the depth of the clamping groove 405, the cross section of the rotation limiting ring 403 is of a T-shaped structure, and a locking hole is formed in the end portion, far away.

For example, in a normal state, the clamping block 407 is retracted into the telescopic groove 406, an outsider rotates the hand wheel 5, the hand wheel 5 drives the rotating shaft 401 to idle, the rotating limiting ring 403 rotates freely in the rotating limiting groove 404, when an operator performs opening and closing work, a key is inserted into a locking hole of the rotating rod 409 and then rotates, the rotating rod 409 drives the gear 410, the gear 410 drives the rack 408, the rack 408 drives the clamping block 407 to extend out of the telescopic groove 406 and fit into the clamping groove 405, positioning limitation is completed, the operator can rotate the hand wheel 5, the hand wheel 5 drives the positioning shaft 402 through the rotating shaft 401, and the positioning shaft 402 drives the worm and gear structure in the single-stage worm gear box body 1 to rotate to perform opening and closing work.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides an idle running prevents open-type single-stage worm wheel which characterized in that: the structure of the anti-false-opening worm wheel comprises a single-stage worm wheel box body (1), a worm (2), a worm wheel (3), an idle rotation anti-false-opening rotating structure (4) and a hand wheel (5), wherein the worm (2) and the worm wheel (3) are arranged in the single-stage worm wheel box body (1), the worm (2) is meshed with the worm wheel (3) and connected with one end of the idle rotation anti-false-opening rotating structure (4) in the single-stage worm wheel box body (1) and connected with the worm (2), the other end of the idle rotation anti-false-opening rotating structure (4) is connected with the hand wheel (5), the idle rotation anti-false-opening rotating structure (4) comprises a rotating shaft (401) and a positioning shaft (402), a rotation limiting ring (403) is arranged on the end face edge of the rotating shaft (401), a rotation limiting groove (404) is arranged on the end face edge of the positioning shaft (402), a clamping, the middle part of the end face of the positioning shaft (402) is provided with a telescopic groove (406) communicated with the clamping groove (405), a clamping block (407) is arranged in the telescopic groove (406) in a sliding mode, a rack (408) is arranged on the outer wall of the clamping block (407), the positioning shaft further comprises a rotating rod (409), the rotating rod (409) is rotatably matched into the telescopic groove (406) through the outer wall of the positioning shaft (402), a gear (410) is arranged at the end part, close to the telescopic groove (406), of the rotating rod (409), and the gear (410) is meshed with the rack (408).

2. The idle mis-open prevention single-stage worm wheel as recited in claim 1, wherein: the rotating shaft (401) is connected with the hand wheel (5) in a bolt fixing mode.

3. The idle mis-open prevention single-stage worm wheel as recited in claim 1, wherein: the cross section of the clamping block (407) is of a polygonal structure, and when the clamping block (407) extends into the clamping groove (405), the positioning shaft (402) positions and limits the rotating shaft (401) through the clamping block (407).

4. The idle mis-open prevention single-stage worm wheel as recited in claim 1, wherein: the length of the fixture block (407) is twice of the depth of the fixture groove (405).

5. The idle mis-open prevention single-stage worm wheel as recited in claim 1, wherein: the cross section of the rotary limiting ring (403) is of a T-shaped structure.

6. The idle mis-open prevention single-stage worm wheel as recited in claim 1, wherein: the end part of the rotating rod (409) far away from the telescopic groove (406) is provided with a lock hole.