CN2918349Y - Overspeed governor of elevator car - Google Patents
Overspeed governor of elevator car Download PDFInfo
- Publication number
- CN2918349Y CN2918349Y CNU2005201398648U CN200520139864U CN2918349Y CN 2918349 Y CN2918349 Y CN 2918349Y CN U2005201398648 U CNU2005201398648 U CN U2005201398648U CN 200520139864 U CN200520139864 U CN 200520139864U CN 2918349 Y CN2918349 Y CN 2918349Y
- Authority
- CN
- China
- Prior art keywords
- copper rod
- electromagnet
- armature
- shift fork
- riser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
- B66B5/044—Mechanical overspeed governors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The utility model discloses a speed limiter for car of lift, which comprises a vertical plate, an electromagnet arranged on the vertical plate and a speed limiter control mechanism, the electromagnet has an armature, a first copper rod is fixed on the end of the armature, the vertical plate has a waist shape hole, a second copper rod is inserted in the waist shape hole, the first copper rod can be moved to touch the second copper rod, the speed limiter control mechanism has a shift fork and the shift fork are connected with the second copper rod. A shielding case is covered on the outer side of the electromagnet, the end of armature is extended out of the outer side of the shielding case, thus during the operation of the electromagnet, the sparkle produced from the electromagnet can be shielded inside to prevent the spattering with explosion protection function.
Description
Technical field
The utility model relates to a kind of velocity limiter of lift car, is used for braking lift car when elevator cage operation exceeds the speed limit.
Background technology
In the prior art, the velocity limiter of lift car comprises riser and the electromagnet and the Control for Speed Limitation mechanism that are arranged on the riser, wherein electromagnet has armature, the end of this armature is fixed with first copper rod, and Control for Speed Limitation mechanism comprises the shift fork in order to braking, this shift fork and second copper rod are fixedly connected, the electromagnet energising produces magnetic field, armature promptly drives the motion of first copper rod, make the copper rod of winning withstand second copper rod, thereby make the shift fork motion, make that Control for Speed Limitation mechanism realizes lift car is carried out brake snub.But because the electromagnet of energising is easy to generate electro spark when work, for explosion-proof lift, the spark of its generation can cause potential safety hazard.
Summary of the invention
The utility model purpose provides a kind of velocity limiter of lift car, and its spark that produces in the time of can preventing work of electromagnet leaks.
For achieving the above object, the technical solution adopted in the utility model is: a kind of velocity limiter of lift car, it comprises riser, be arranged at electromagnet and Control for Speed Limitation mechanism on the described riser, described electromagnet has armature, the end of described armature is fixed with first copper rod, have waist shaped hole on the described riser, be inserted with second copper rod in the described waist shaped hole, described first copper rod second copper rod of can conflicting with removing, has shift fork in the described Control for Speed Limitation mechanism, the described shift fork and second copper rod are fixedly connected, and the outside of described electromagnet is covered with cage, and the outside at cage is exposed in the end of described armature.
Because technique scheme utilization, the utility model compared with prior art has following advantage: the outside at electromagnet is covered with cage, the spark that produces during work of electromagnet is kept off in the inboard by cage, can prevent that spark from spattering outward, thereby have explosion prevention function, can improve the safety of velocity limiter work.
Description of drawings
Accompanying drawing 1 is a front view of the present utility model;
Accompanying drawing 2 is that the K of accompanying drawing 1 is to view;
Accompanying drawing 3 is the back cutaway view of the utility model when the car proper motion;
Accompanying drawing 4 is the back cutaway view of the utility model in the process of carrying out the limiting brake operation;
Accompanying drawing 5 is the back cutaway view one of the utility model under the state of braking car;
Accompanying drawing 6 is the back cutaway view two of the utility model under the state of braking car;
In the tool: 1, electromagnet; 2, cage; 3, first copper rod; 4, master cock; 5, steel rope; 6, Control for Speed Limitation mechanism; 7, ratchet; 8, spring; 9, riser; 10, roller; 11, rotating shaft; 12, armature; 13, shift fork; 14, ratchet; 15, claw; 16, draw-in groove; 17, second copper rod; 18, waist shaped hole; 19, four stars cam.
The specific embodiment
Referring to accompanying drawing 1-accompanying drawing 6, a kind of velocity limiter of lift car, it comprises riser 9, be arranged at electromagnet 1 and Control for Speed Limitation mechanism 6 on the described riser 9, described electromagnet 1 has armature 12, the end of described armature 12 is fixed with first copper rod 3, have waist shaped hole 18 on the described riser 9, be inserted with second copper rod 17 in the described waist shaped hole 18, described first copper rod 3 second copper rod 17 of can conflicting with removing, has shift fork 13 in the described Control for Speed Limitation mechanism 6, the described shift fork 13 and second copper rod 17 are fixedly connected, and the outside of described electromagnet 1 is covered with cage 2, and the outside at cage 2 is exposed in the end of described armature 12.
Shown in accompanying drawing 1-accompanying drawing 3, electromagnet 1 is arranged at the front of riser 9, and Control for Speed Limitation mechanism 6 is arranged at the back side of riser 9, and the front of riser 9 also is provided with master cock 4.Control for Speed Limitation mechanism 6 is for being applied in the common mechanism on the lift car, it comprises that pivot is arranged at the ratchet 7 on the riser 9, the four stars cam 19 of captiveing joint with ratchet 7 same axis, the steel rope 5 of traction car promptly is arranged on the ratchet 7, having draw-in groove 16 on the ratchet 7, is claw 15 parts of ratchet 7 between the adjacent draw-in groove 16.Shift fork 13 is pivotally connected on the riser 9 by rotating shaft 11, and an end of shift fork 13 is provided with roller 10, and the other end of shift fork 13 has ratchet 14, is connected with spring 8 between shift fork 13 and the riser 9.
When elevator operation hypervelocity, as shown in Figure 4, the oscillatory forces of four stars cam 19 pair rollers 10 makes shift fork 13 rotate along clockwise direction greater than the elastic force of spring 8, thereby ratchet 14 is inserted in the draw-in groove 16.Referring to accompanying drawing 5-accompanying drawing 6, when operation exceeded the speed limit in the elevator process of rising or falling, ratchet 14 tightened mutually with claw 15, and the brake equipment (being generally safety tongs) by steel rope 5 tractive cars makes lift car be decelerated to and stops.Above-mentioned braking procedure also can be realized by the Action Button of operation elevator control cabinet, make the magnet coil energising of electromagnet 1 produce magnetic field, drive 3 motions of first copper rod by armature 12, and it is mobile in waist shaped hole 18 to promote second copper rod 17, thereby make shift fork 13 motion braking lift cars, simultaneously, second copper rod 17 is pushed down master cock 4, to cut off whole safety return circuit.
After the utility model action, must make ratchet 7 rotate a little along the direction opposite with former sense of motion, make ratchet 14 to be separated with claw 15, thereby the application force by spring 8 makes shift fork 13 be returned to the normal position, as shown in Figure 3, the operational motion button makes electromagnet 1 move simultaneously, so that master cock 4 resets, thereby elevator can be reruned safely.
Claims (1)
1, a kind of velocity limiter of lift car, it comprises riser (9), be arranged at electromagnet (1) and Control for Speed Limitation mechanism (6) on the described riser (9), described electromagnet (1) has armature (12), the end of described armature (12) is fixed with first copper rod (3), have waist shaped hole (18) on the described riser (9), be inserted with second copper rod (17) in the described waist shaped hole (18), described first copper rod (3) second copper rod (17) of can conflicting with removing, has shift fork (13) in the described Control for Speed Limitation mechanism (6), described shift fork (13) is fixedly connected with second copper rod (17), it is characterized in that: the outside of described electromagnet (1) is covered with cage (2), and the outside in cage (2) is exposed in the end of described armature (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201398648U CN2918349Y (en) | 2005-12-16 | 2005-12-16 | Overspeed governor of elevator car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201398648U CN2918349Y (en) | 2005-12-16 | 2005-12-16 | Overspeed governor of elevator car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2918349Y true CN2918349Y (en) | 2007-07-04 |
Family
ID=38216163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005201398648U Expired - Fee Related CN2918349Y (en) | 2005-12-16 | 2005-12-16 | Overspeed governor of elevator car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2918349Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013006123A1 (en) * | 2011-07-01 | 2013-01-10 | Alimak Hek Ab | Arrangement for a capture device intended to be used in surroundings in which there is a risk of explosion |
-
2005
- 2005-12-16 CN CNU2005201398648U patent/CN2918349Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013006123A1 (en) * | 2011-07-01 | 2013-01-10 | Alimak Hek Ab | Arrangement for a capture device intended to be used in surroundings in which there is a risk of explosion |
| WO2013006122A1 (en) * | 2011-07-01 | 2013-01-10 | Alimak Hek Ab | Arrangement for a capture device intended to be used in surrounding in which there is a risk of explosion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070704 Termination date: 20131216 |