CN102518692A - Overtemperature protection device for shaft transmission - Google Patents
Overtemperature protection device for shaft transmission Download PDFInfo
- Publication number
- CN102518692A CN102518692A CN201110431713XA CN201110431713A CN102518692A CN 102518692 A CN102518692 A CN 102518692A CN 201110431713X A CN201110431713X A CN 201110431713XA CN 201110431713 A CN201110431713 A CN 201110431713A CN 102518692 A CN102518692 A CN 102518692A
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- China
- Prior art keywords
- ratchet
- spring
- input shaft
- transmission
- shaft
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Abstract
The invention relates to an overtemperature protection device for shaft transmission, which can release automatically and comprises an input shaft (1) and a transmission shaft (5), ratchets are arranged on the end face of the input shaft (1), pawls (6) are mounted on the transmission shaft (5), ratchets are arranged on the end faces of the pawls, the ratchets on the end face of the input shaft (1) mesh with the ratchets on the end faces of the pawls (6), a spring cavity (11) is arranged between the pawls (6) and the input shaft (1), and a spring (59) capable of releasing the pawls (6) is mounted in the spring cavity (11). According to the characteristic that hot melts are in the solid state on the normal condition and occupy a certain space but are changed to be in the liquid state and have flowability to avoid space occupation at overtemperature, meshing between the pawls of the input shaft and downstream transmission can be released by energy stored by the spring. The overtemperature protection device is skillful in design, simple in structure, few in parts, small in size and high in working reliability and capable of realizing a protection function of automatic release of shaft transmission at overtemperature.
Description
Technical field
The present invention relates to the transmission of a kind of self-detaching axle class and use overtemperature protection device.
Background technique
Have overtemperature and throw off the basic demand that protective function is an axle type transmission device product, can when the product overtemperature, implement the instant protection of throwing off, prevent that fault from further enlarging product.
Early stage overtemperature protection device is shown in Figure of description 1 (a), and when the overtemperature signal passes to 68 last times of electromagnet, electromagnet powers up; Work armature sucks; Pull out the stop pin 67 that resets that is attached thereto through a cover leverage (not shown), the stop pin 67 that resets is thrown off with the locking of throwing off worm screw 75, under the effect of spring, throw off worm screw 75 and discharge; And with the engagement of the snail line of worm screw 63, shown in Fig. 1 (b).The result; Worm screw 63 with throw off worm screw 75 engagement precession and to left dislocation under the operating mode of transmission shaft rotation; The elastic force that left pawl 77 overcomes spring 59 also is moved to the left; Left pawl 77 and the right ratchet that is engaged with 62 are thrown off, and input shaft gets into no longer driven product work of idling conditions, shown in Fig. 1 (c).
This apparatus structure complicacy, number of spare parts and process are numerous, and some links go wrong, and all possibly cause mechanism's cisco unity malfunction, and reliability is low.
Summary of the invention
The object of the invention: design a kind of self-detaching axle class transmission simple in structure, reliable operation and use overtemperature protection device.
Technological scheme of the present invention: overtemperature protection device is used in a kind of class transmission; Comprise input shaft (1) and transmission shaft (5), input shaft (1) end face is provided with ratchet, and ratchet (6) is installed on the transmission shaft (5); Ratchet (6) end face is provided with ratchet; Input shaft (1) end face ratchet and ratchet (6) end face ratchet engagement are provided with spring chamber (11) between ratchet (6) and the input shaft (1), and the spring (59) that ratchet (6) is thrown off is installed in the spring chamber (11).
Further; Have the spring guide (12) that is deep in the spring chamber in the above-mentioned transmission shaft (5), spring guide (12) one ends are provided with spring pedestal (13), and spring (59) is installed on the spring guide (12); One end props up spring pedestal (13), and the other end props up ratchet (6); Between ratchet (6) and transmission shaft (5), be provided with hot melt (3) and have the cylinder body (4) of cavity (8), be provided with porose between hot melt (3) and the cylinder body (4).
Further, above-mentioned hot melt (3) is a low-melting alloy.
Beneficial effect of the present invention: the present invention utilizes and is the solid-state certain space that occupies under the hot melt normal state, becomes liquid state during overtemperature and has the advantages that mobile legibility removes occupy-place, utilizes spring energy-storage to remove the engagement of input shaft ratchet and downstream transmission.This device design is ingenious, simple in structure, part is few, size is little, functional reliability is high, can realize axle type transmission overtemperature disengagement protective function automatically.
Description of drawings:
Fig. 1 is early stage overtemperature protection device structural representation, 59: spring, 62: with the input shaft, 63 of right ratchet: worm screw, 67: the stop pin that resets, 68: electromagnet, 75: throw off worm screw, 77: left pawl;
Fig. 2 is an overtemperature protection device structural representation of the present invention,
Wherein, 1: input shaft, 2: sliding bearing, 3: thermosol body, 4: cylinder body, 5: transmission shaft, 6: ratchet, 7: spring, 8: cavity, 11: spring chamber, 12: spring guide, 13: spring pedestal.
Embodiment
Below in conjunction with Figure of description the present invention is described in further detail.See also Figure of description 2, it is the present invention's one preferred embodiments schematic representation.
Overtemperature protection device is used in a kind of class transmission, comprises input shaft 1 and transmission shaft 5, and input shaft 1 end face is provided with ratchet, and ratchet 6 is installed on the transmission shaft 5, when specifically installing, is ratchet 6 external spliness and the engagement of transmission shaft 5 internal splines; Ratchet 6 end faces are provided with ratchet, and input shaft 1 end face ratchet and ratchet 6 end face ratchet engagement are provided with spring chamber 11 between ratchet 6 and the input shaft 1, and the spring 59 that ratchet 6 is thrown off is installed in the spring chamber 11.
Further, have the spring guide 12 that is deep in the spring chamber in the above-mentioned transmission shaft 5, spring guide 12 1 ends are provided with spring pedestal 13, and spring 59 is installed on the spring guide 12, and an end props up spring pedestal 13, and the other end props up ratchet 6; Between ratchet 6 and transmission shaft 5, be provided with hot melt 3 and the cylinder body 4 that has cavity 8, be provided with porose between hot melt 3 and the cylinder body 4.
During proper functioning, thermosol body 3 is a solid state, occupies certain space, and spring 59 is in compressive state, and the input torque of input shaft 1 passes to transmission shaft 5 through ratchet 6, drives the work of downstream mechanism;
When the inner overtemperature of product reached specified value, 3 fusings of thermosol body became liquid, get into cavity 8 through the hole on the cylinder body 4; Former thermosol body 3 occupied spaces are released; Ratchet 6 moves to transmission shaft 5 directions under the effect of spring 59 precompressions; The end face ratchet of ratchet 6 breaks away from the engagement with input shaft 1 end face ratchet, and after the end face ratchet broke away from engagement, input shaft 1 dallied under the supporting of sliding bearing; No longer drive downstream mechanism and work on, reached the effect of protection downstream mechanisms.In the practical work process, hot melt 3 is a low-melting alloy, protects the limiting temperature value of product to choose corresponding hot melt 3 materials as required.
Claims (3)
1. overtemperature protection device is used in axle class transmission; Comprise input shaft (1) and transmission shaft (5), it is characterized in that: input shaft (1) end face is provided with ratchet, and ratchet (6) is installed on the transmission shaft (5); Ratchet (6) end face is provided with ratchet; Input shaft (1) end face ratchet and ratchet (6) end face ratchet engagement are provided with spring chamber (11) between ratchet (6) and the input shaft (1), and the spring (59) that ratchet (6) is thrown off is installed in the spring chamber (11).
2. overtemperature protection device is used in an axle type transmission according to claim 1; It is characterized in that: have the spring guide (12) that is deep in the spring chamber in the transmission shaft (5); Spring guide (12) one ends are provided with spring pedestal (13); Spring (59) is installed on the spring guide (12), and an end props up spring pedestal (13), and the other end props up ratchet (6); Between ratchet (6) and transmission shaft (5), be provided with hot melt (3) and have the cylinder body (4) of cavity (8), be provided with porose between hot melt (3) and the cylinder body (4).
3. overtemperature protection device is used in an axle type transmission according to claim 2, and it is characterized in that: hot melt (3) is a low-melting alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110431713XA CN102518692A (en) | 2011-12-20 | 2011-12-20 | Overtemperature protection device for shaft transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110431713XA CN102518692A (en) | 2011-12-20 | 2011-12-20 | Overtemperature protection device for shaft transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102518692A true CN102518692A (en) | 2012-06-27 |
Family
ID=46289722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110431713XA Pending CN102518692A (en) | 2011-12-20 | 2011-12-20 | Overtemperature protection device for shaft transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102518692A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018215205A1 (en) * | 2017-05-22 | 2018-11-29 | Bayerische Motoren Werke Aktiengesellschaft | Drive train with thermal overload safeguard |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE510000C (en) * | 1929-11-01 | 1930-10-15 | Anders Rosborg | Device for loosening sliding couplings for shafts, pulleys, flywheels and the like. Like. If the clutch overheats |
| US2539534A (en) * | 1949-11-23 | 1951-01-30 | Phillips Petroleum Co | Safety coupling device |
| CN86206328U (en) * | 1986-08-29 | 1987-10-03 | 上海铰链四厂 | Vertical door shutting device especially suitable for fireproof door |
| CN2195613Y (en) * | 1993-08-03 | 1995-04-26 | 周修华 | Driving controller for fire rolling door |
-
2011
- 2011-12-20 CN CN201110431713XA patent/CN102518692A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE510000C (en) * | 1929-11-01 | 1930-10-15 | Anders Rosborg | Device for loosening sliding couplings for shafts, pulleys, flywheels and the like. Like. If the clutch overheats |
| US2539534A (en) * | 1949-11-23 | 1951-01-30 | Phillips Petroleum Co | Safety coupling device |
| CN86206328U (en) * | 1986-08-29 | 1987-10-03 | 上海铰链四厂 | Vertical door shutting device especially suitable for fireproof door |
| CN2195613Y (en) * | 1993-08-03 | 1995-04-26 | 周修华 | Driving controller for fire rolling door |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018215205A1 (en) * | 2017-05-22 | 2018-11-29 | Bayerische Motoren Werke Aktiengesellschaft | Drive train with thermal overload safeguard |
| US11378137B2 (en) | 2017-05-22 | 2022-07-05 | Bayerische Motoren Werke Aktiengesellschaft | Drive train with thermal overload safeguard |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120627 |