CN203922563U - A kind of drop-gear box with overspeed protection device - Google Patents
A kind of drop-gear box with overspeed protection device Download PDFInfo
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- CN203922563U CN203922563U CN201420334066.XU CN201420334066U CN203922563U CN 203922563 U CN203922563 U CN 203922563U CN 201420334066 U CN201420334066 U CN 201420334066U CN 203922563 U CN203922563 U CN 203922563U
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- ratchet
- axle
- drop
- protection device
- overspeed protection
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Abstract
The utility model discloses a kind of drop-gear box with overspeed protection device; comprise turbine gear hob and be arranged on the brake facing outside described turbine gear hob; the surface of described turbine gear hob is provided with pillar; on described pillar, be set with the ratchet that can rotate around it; between one end of described ratchet and the rotating shaft of described turbine gear hob, be connected by axle; in described axle, be set with Compress Spring; the inside edge of described brake facing is provided with the bayonet socket that can snap in for the other end of described ratchet, and the side that is connected with axle near described ratchet of described pillar.When because effectively limited speed of motor brake, after causing gear case rotating speed higher than setting value, the pressure that the centnifugal force of ratchet is greater than Compress Spring causes pawl axis to extrinsic deflection, and one end of ratchet is snapped in the bayonet socket of brake facing, and gear case is stopped operating.
Description
Technical field
The utility model has related to a kind of drop-gear box with overspeed protection device, belongs to electric block technical field.
Background technology
general electric block is without over-speed protection function or adopt electronic protecting device, and its fiduciary level is lower, and for different use occasions, main employing double-brake mode promotes safety performance, but its complex structure, and cost is higher.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of drop-gear box with overspeed protection device; when because effectively limited speed of motor brake; after causing gear case rotating speed higher than setting value; the pressure that the centnifugal force of ratchet is greater than Compress Spring causes pawl axis to extrinsic deflection; one end of ratchet is snapped in the bayonet socket of brake facing, gear case is stopped operating.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of drop-gear box with overspeed protection device; comprise turbine gear hob and be arranged on the brake facing outside described turbine gear hob; the surface of described turbine gear hob is provided with pillar; on described pillar, be set with the ratchet that can rotate around it; between one end of described ratchet and the rotating shaft of described turbine gear hob, be connected by axle; in described axle, be set with Compress Spring; the inside edge of described brake facing is provided with the bayonet socket that can snap in for the other end of described ratchet, and the side that is connected with axle near described ratchet of described pillar.
Aforesaid a kind of drop-gear box with overspeed protection device, is characterized in that: one end that described ratchet is connected with described axle is provided with waist type groove.
Aforesaid a kind of drop-gear box with overspeed protection device, is characterized in that: described bayonet socket is circular-arc, and radian is greater than 180 °.
Aforesaid a kind of drop-gear box with overspeed protection device, is characterized in that: one end that described ratchet can snap in described bayonet socket is circular-arc.
Aforesaid a kind of drop-gear box with overspeed protection device, is characterized in that: in described axle, be provided with upper limit ring and lower limit ring, described Compress Spring is arranged in the axle between described upper and lower spacing ring.
The beneficial effects of the utility model are: by rotating ratchet is installed on turbine gear hob, in the time of gear case normal rotation, ratchet separates with brake facing because of the elastic force of Compress Spring, when because effectively limited speed of motor brake, after causing gear case rotating speed higher than setting value, the pressure that the centnifugal force of ratchet is greater than Compress Spring causes pawl axis to extrinsic deflection, one end of ratchet is snapped in the bayonet socket of brake facing, gear case is stopped operating, simple and compact for structure, reliable in function degree is high, greatly promotes electric block safety.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of drop-gear box with overspeed protection device of the utility model;
Fig. 2 is the enlarged diagram of A in Fig. 1.
Detailed description of the invention
Below in conjunction with Figure of description, the utility model is further described.
As depicted in figs. 1 and 2, a kind of drop-gear box with overspeed protection device, comprise turbine gear hob 1 and be arranged on the brake facing 2 outside described turbine gear hob 1, the surface of described turbine gear hob 1 is provided with pillar 6, on described pillar 6, be set with the ratchet 4 that can rotate around it, between the rotating shaft of one end of described ratchet 4 and described turbine gear hob 1, be connected by axle 3, in described axle 3, be set with Compress Spring 7, the inside edge of described brake facing 2 is provided with the bayonet socket 5 that can snap in for the other end of described ratchet 4, and the side that described pillar 6 is connected with axle 3 near described ratchet 4.In the time of gear case normal rotation, ratchet 4 separates with brake facing 2 because of the elastic force of Compress Spring 7, when because effectively limited speed of motor brake, after causing gear case rotating speed higher than setting value, the pressure that the centnifugal force of ratchet 4 is greater than Compress Spring 7 causes ratchet 4 axially outwards to rotate around pillar 6, and one end of ratchet 4 is snapped in the bayonet socket 5 of brake facing 2, gear case is stopped operating, simple and compact for structure, reliable in function degree is high, greatly promotes electric block safety.
One end that described ratchet 4 is connected with described axle 3 is provided with waist type groove 8, and when the pressure that is greater than Compress Spring 7 because of centnifugal force when ratchet 4 produces deflection, axle 3 can move in waist type groove 8, has ensured the turnability of ratchet 4.
Described bayonet socket 5 is circular-arc, one end that described ratchet 4 can snap in described bayonet socket 5 is circular-arc, is convenient to ratchet 4 and snaps onto in bayonet socket 5, and can not cause damage to brake facing, and the radian of described bayonet socket 5 is greater than 180 °, ensure can initiatively not separate after ratchet 4 snaps onto in bayonet socket 5.
When needs separate ratchet 4 with brake facing 2, control motor reversal, because the rotating speed of gear case recovers normal, ratchet 4 automatically resets under the effect of Compress Spring 7 elastic force, then controls motor forward rotation and can normally work.
In described axle 3, be provided with upper limit ring 9 and lower limit ring 10, described Compress Spring 7 is arranged in the axle 3 between described upper and lower spacing ring, has ensured the fixed position of Compress Spring 7, and it can not come off from axle 3.
In sum; a kind of drop-gear box with overspeed protection device that the utility model provides; when because effectively limited speed of motor brake; after causing gear case rotating speed higher than setting value; the pressure that the centnifugal force of ratchet is greater than Compress Spring causes pawl axis to extrinsic deflection; one end of ratchet is snapped in the bayonet socket of brake facing, gear case is stopped operating.
More than show and described groundwork of the present invention, principal character and advantage.The technical personnel of the industry should be understood; the present invention is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is by appending claims and equivalent circle thereof.
Claims (5)
1. one kind has the drop-gear box of overspeed protection device, comprise turbine gear hob (1) and be arranged on the outer brake facing (2) of described turbine gear hob (1), it is characterized in that: the surface of described turbine gear hob (1) is provided with pillar (6), on described pillar (6), be set with the ratchet (4) that can rotate around it, between the rotating shaft of one end of described ratchet (4) and described turbine gear hob (1), be connected by axle (3), in described axle (3), be set with Compress Spring (7), the inside edge of described brake facing (2) is provided with the bayonet socket (5) that can snap in for the other end of described ratchet (4), and the side that described pillar (6) is connected with axle (3) near described ratchet (4).
2. a kind of drop-gear box with overspeed protection device according to claim 1, is characterized in that: one end that described ratchet (4) is connected with described axle (3) is provided with waist type groove (8).
3. a kind of drop-gear box with overspeed protection device according to claim 1 and 2, is characterized in that: described bayonet socket (5) is for circular-arc, and radian is greater than 180 °.
4. a kind of drop-gear box with overspeed protection device according to claim 3, is characterized in that: one end that described ratchet (4) can snap in described bayonet socket (5) is circular-arc.
5. a kind of drop-gear box with overspeed protection device according to claim 4; it is characterized in that: in described axle (3), be provided with upper limit ring (9) and lower limit ring (10), described Compress Spring (7) is arranged in the axle (3) between described upper and lower spacing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420334066.XU CN203922563U (en) | 2014-06-23 | 2014-06-23 | A kind of drop-gear box with overspeed protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420334066.XU CN203922563U (en) | 2014-06-23 | 2014-06-23 | A kind of drop-gear box with overspeed protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203922563U true CN203922563U (en) | 2014-11-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420334066.XU Active CN203922563U (en) | 2014-06-23 | 2014-06-23 | A kind of drop-gear box with overspeed protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203922563U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107324234A (en) * | 2017-08-08 | 2017-11-07 | 冠亚机械工业（昆山）有限公司 | A kind of electric block with overspeed protective device |
| CN112918994A (en) * | 2021-01-25 | 2021-06-08 | 吴德兴 | Industrial electrical numerical control automation equipment |
-
2014
- 2014-06-23 CN CN201420334066.XU patent/CN203922563U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107324234A (en) * | 2017-08-08 | 2017-11-07 | 冠亚机械工业（昆山）有限公司 | A kind of electric block with overspeed protective device |
| CN112918994A (en) * | 2021-01-25 | 2021-06-08 | 吴德兴 | Industrial electrical numerical control automation equipment |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |