CN110626905B - Elevator and speed limiter thereof - Google Patents
Elevator and speed limiter thereof Download PDFInfo
- Publication number
- CN110626905B CN110626905B CN201810648903.9A CN201810648903A CN110626905B CN 110626905 B CN110626905 B CN 110626905B CN 201810648903 A CN201810648903 A CN 201810648903A CN 110626905 B CN110626905 B CN 110626905B
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- heat
- block
- clamp block
- swinging
- fixed
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- 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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- 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
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/24—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by acting on guide ropes or cables
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention relates to an elevator and a speed limiter thereof, wherein the speed limiter comprises: a governor sheave (10); a fixed clamp block (32); a swinging clamp block (31); a throwing block (13, 14); and a clamp block locking mechanism which locks the swinging clamp block under the normal operation state to keep a preset distance between the swinging clamp block and the speed limiter rope, releases the swinging clamp block under the trigger of the swinging block and clamps the speed limiter rope together with the fixed clamp block. At least one of the fixed clamp block and the swinging clamp block is provided with a heat release part (43, 47), and the heat conductivity coefficient of the heat release part is larger than that of the body of the clamp block provided with the heat release part. A heat receiving unit (48,49) having a heat conductivity larger than that of the housing is provided at a position of the housing (21) corresponding to the heat radiating unit, and the heat radiating unit is in contact with the heat receiving unit when the swing jaw and the fixed jaw sandwich the governor rope. Accordingly, frictional heat can be transmitted to the heat receiving unit through the heat radiating unit, and a temperature increase of the caliper block can be suppressed.
Description
Technical Field
The invention relates to an elevator and a speed limiter thereof.
Background
Elevator installations usually have a speed limiter for monitoring the operating speed of the elevator. When the descending speed of the elevator car exceeds the rated speed and reaches the 1 st action speed of the speed limiter, the speed limiter triggers the overspeed switch, so that the control circuit loses power and the brake acts. If the speed of the car is further increased and reaches the 2 nd action speed of the speed limiter, the clamp block of the speed limiter clamps the rope of the speed limiter, so that the safety clamp acts to forcibly stop the car. For example, an elevator apparatus disclosed in international patent publication WO2017/130264a1 has a swinging jaw 6 and a fixed jaw 11 a. When the car speed reaches the 2 nd operating speed of the governor, the latch hook releases the swinging block 6, swings it in the direction of the fixed block 11a, and finally clamps the governor rope 1 together with the fixed block 11 a.
When the swing clamp block and the fixed clamp block clamp the speed limiter rope, great friction heat is generated, so that the temperature of the swing clamp block and the temperature of the fixed clamp block are increased rapidly, the clamping force of the clamp block is reduced, the abrasion of the clamp block is accelerated, and the service life of the speed limiter is shortened.
Disclosure of Invention
The invention aims to provide a speed governor of an elevator, which can restrain the temperature rise of a clamp block. In order to solve the technical problem, the speed limiter of the invention comprises: a horizontal shaft supported by the frame; a governor sheave provided on the horizontal shaft; the fixed clamp block is fixed on the frame body; the swinging clamp block is arranged on the other side of the speed limiter rope relative to the fixed clamp block in a swinging mode; a throwing block rotating together with the speed governor rope wheel and throwing outwards relative to the speed governor rope wheel under the action of centrifugal force; and a clamp block locking mechanism which locks the swinging clamp block under normal conditions to keep a preset distance between the swinging clamp block and the speed limiter rope, releases the swinging clamp block under the trigger of a throwing block and clamps the speed limiter rope together with the fixed clamp block. At least one of the fixed clamp block and the swinging clamp block is provided with a heat release part, and the heat conductivity coefficient of the heat release part is greater than that of the body of the clamp block provided with the heat release part. The frame body is provided with a heat receiving part corresponding to the heat releasing part, the heat conductivity coefficient of the heat receiving part is larger than that of the frame body, and when the swing clamp block and the fixed clamp block clamp the speed governor rope, the heat releasing part is in contact with the heat receiving part.
The invention also provides an elevator device which comprises the car, the counterweight, the tractor and the speed limiter.
Since the clamp block of the speed governor of the present invention is provided with the heat releasing portion having a large heat conductivity coefficient, when the clamp block clamps the governor rope, the temperature rise of the clamp block can be effectively suppressed. In addition, other technical problems to be solved by the present invention, other technical features of the present invention, and effects thereof will be described by the following embodiments.
Drawings
Fig. 1 schematically shows an embodiment of the elevator according to the invention.
Fig. 2 is a schematic diagram schematically showing an embodiment of the speed limiter of the present invention.
Fig. 3 shows a state in which the governor rope shown in fig. 2 is pinched by the governor.
Fig. 4 is a front view schematically showing the structure of the swing jaw.
Fig. 5 is a plan view schematically showing the swing jaw structure.
Fig. 6 is a front view schematically showing the structure of the fixed jaw.
Fig. 7 is a plan view schematically showing the fixed jaw structure.
Fig. 8 is a right side view schematically showing the fixed jaw structure.
Fig. 9 is a schematic projection view of the section a-a shown in fig. 3.
< notation in the drawing >
100 elevators; 1, a lift car; 2, counterweight; 3 hoisting a rope; 4, a traction machine; 5, a guide rail; 6, a guide rail; 7, safety tongs; 8 connecting rods; 9a speed limiter; 10 a governor sheave; 11a tension wheel; 12 a governor rope; 13 throwing blocks; 14, throwing blocks; 15 ratchet wheel; 21 a frame body; 22 a horizontal axis; 23 rotating arms; 24, a linkage pull rod; 25 speed regulating spring; 26 a pawl; 27 contact terminals; 28 an over speed switch; 31 swinging the clamp block; 32 fixing the clamp blocks; 33 supporting rods; 34 a spring; 35a latch hook; 36 fixing the plate; 37 spring seats; 41 swinging the clamp block body; 42a clamping part; 42a groove; 43 the 1 st heat radiation part; 43a projection; 44 bolts; 45 fixing the clamp block body; 45a clamping surface; 46 bolt holes; 47 the 2 nd heat release part; 47a projection; 48 the 1 st heat receiving unit; 48a recess; 49a 2 nd heat receiving unit; 49a are recessed.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings and examples.
Fig. 1 schematically shows an embodiment of the elevator according to the invention. An elevator 100 shown in fig. 1 includes a car 1, a counterweight 2, a hoisting machine 4, a safety gear 7, and a speed governor 9. The car 1 and the counterweight 2 are connected by a hoisting rope 3, and are driven by a hoisting machine 4 to ascend and descend in the hoistway along a guide rail 5 and a guide rail 6, respectively. A machine room is arranged above the hoistway. The traction machine 4 is provided in the machine room. The safety gear 7 is arranged below the car 1.
The governor 9 includes a governor sheave 10 provided in a machine room, a tension sheave 11 provided below the hoistway, and a governor rope 12 connected in an annular shape between the governor sheave 10 and the tension sheave 11. The governor rope 12 is connected to the car 1 via a link 8, and moves as the car 1 moves up and down, thereby rotating the governor sheave 10. Therefore, the higher the speed of the car 1 is, the faster the governor sheave 10 rotates. The car 1 changes the running direction and drives the governor sheave 10 to change the rotation direction.
Fig. 2 is a schematic diagram schematically showing an embodiment of the speed limiter of the present invention. As shown in fig. 2, the governor 9 further includes a frame 21, a horizontal shaft 22, a pivot arm 23, a throw block 13, a throw block 14, a ratchet 15, a swing jaw 31, a fixed jaw 32, and a latch hook 35.
The horizontal shaft 22 is fixed to the frame 21 and supported by the frame 21. The governor sheave 10 and the rotating arm 23 are rotatably provided on the horizontal shaft 22. The governor rope 12 is suspended from the governor sheave 10. The rotating arm 23 rotates together with the governor sheave 10.
The slinger 13 and the slinger 14 are rotatably mounted to the rotating arm 23 through pivots 13c and 14c, respectively. The throwing block 13 and the throwing block 14 are connected through a linkage pull rod 24. The slinger 13 has a large end 13a on one side of the pivot 13c and a small end 13b on the other side of the pivot 13c, and the weight of the large end 13a is greater than that of the small end 13 b. The slinger 14 has a large end 14a on one side of the pivot 14c and a small end 14b on the other side of the pivot 14c, the weight of the large end 14a being greater than the weight of the small end 14 b. Contacts 27 are provided at the large end 13a and the large end 14 a. A pawl 26 is provided at the small end 14b of the slinger 14.
When the rotating arm 23 rotates together with the governor sheave 10, the slinger 13 and the slinger 14 are thrown outward relative to the governor sheave 10 by the centrifugal force. That is, as shown by the arrows in fig. 2, the slinger 13 and the slinger 14 rotate under the centrifugal force, the large end 13a and the large end 14a move to the outside away from the horizontal shaft 22, and the small end 13b and the small end 14b move to the inside close to the horizontal shaft 22.
A speed regulating spring 25 is provided between the small end 14b of the throw block 14 and the rotating arm 23. When the small end 14b moves in a direction approaching the horizontal shaft 22, the governor spring 25 applies an elastic force in a direction to stop the movement of the small end 14 b. Therefore, only when the centrifugal force acting on the slinger 13 and the slinger 14 is larger than the elastic force of the governor spring 25, the governor spring 25 is compressed and elastically deformed to rotate the slinger 13 and the slinger 14. Therefore, by setting the biasing force of the governor spring 25, the rotation speed of the governor sheave 10 when the thrower 13 and the thrower 14 are thrown outward, that is, the speed of the car 1 when the thrower 13 and the thrower 14 are thrown outward can be set.
The ratchet 15 is in the shape of a circular plate having a plurality of ratchet teeth 15a on its circumference. The ratchet 15 is rotatably provided on the horizontal shaft 22. One side plane of the ratchet 15 faces the throws 13 and 14. A pin 15b is provided on the other side plane of the ratchet 15.
The fixed clamp block 32 is fixed to the frame 21 by bolts. The swing jaw 31 is swingably mounted on the other side of the governor rope 12 with respect to the fixed jaw 32. Specifically, the swing jaw 31 is swingably mounted on one end of a support bar 33. The other end of the support rod 33 is slidably mounted to a fixing plate 36 in the left-right direction of fig. 2, and the fixing plate 36 is fixed to the frame 21. The support rod 33 has a spring seat 37. Between the spring seat 37 and the fixed plate 36, a spring 34 is provided. The spring 34 is a compression spring that applies a certain elastic force to the support rod 33 in the left direction of fig. 2 via a spring seat 37. The swinging caliper block 31 is provided with a pin 31 a.
The latch hook 35 is rotatably attached to the frame 21 by a pivot. The latch hook 35 has an arm portion 35a extending in the direction of the ratchet 15, and a hook portion 35b perpendicular to the arm portion 35 a. The front end of the arm 35a is provided with a notch into which the pin 15b of the ratchet 15 is inserted, and the angle of the latch hook 35 can be changed by pulling the arm 35 a. The ratchet 15 and the latch hook 35 constitute a caliper block locking mechanism. As shown in fig. 2, in a state where the elevator 100 is normally operated, the hook portion 35b of the lock hook 35 locks the swing jaw 31 by hooking the pin 31a of the swing jaw 31 to maintain a predetermined distance from the governor rope 12.
The operation principle of the speed governor 9 will be briefly described with reference to fig. 2. In fig. 2, the counterclockwise rotation of the governor sheave 10 is a process in which the car 1 descends. When the descending speed of the car 1 exceeds the rated speed, the large end 13a of the throw block 13 and the large end 14a of the throw block 14 are gradually thrown outward by the centrifugal force. When the descending speed of the car 1 reaches the 1 st operating speed, the contact 27 of the large end 13a or the large end 14a strikes the overspeed switch 28 to operate, so that the control loop of the elevator 100 is cut off, and the brake is released.
If the descending speed of the car 1 is further increased, the large end 13a and the large end 14a are thrown further outward, and the small end 13b and the small end 14b are moved further inward. When the descending speed of the car 1 reaches the 2 nd operating speed, the pawl 26 provided at the small end 14b is inserted between the ratchet teeth 15a of the ratchet 15, and the ratchet 15 is triggered to rotate counterclockwise. The counterclockwise rotation of the ratchet 15 will bring the latch hook 35 to rotate clockwise via the pin 15b, thereby releasing the hook 35b from the swing jaw 31. The swinging jaw 31 drops by its own weight and holds the governor rope 12 together with the fixed jaw 32.
Fig. 3 shows a state in which the governor rope shown in fig. 2 is pinched by the governor. In this state, the spring 34 applies an elastic force to the swing jaw 31 through the support rod 33 in a direction of fixing the jaw 32 (left direction in fig. 3). The swinging jaw 31 and the fixed jaw 32 clamp the governor rope 12 from both sides of the governor rope 12 to stop the movement thereof. When the speed governor rope 12 stops moving, the safety gear 7 is triggered to act through the connecting rod 8, and the car 1 is forcibly stopped. When the swinging jaw 31 and the fixed jaw 32 clamp the governor rope 12, a large frictional heat is generated.
Fig. 4 is a front view schematically showing the structure of the swing jaw. Fig. 5 is a plan view schematically showing the swing jaw structure. As shown in the drawing, the swing jaw 31 includes a swing jaw body 41, a clamping portion 42, and a1 st heat radiating portion 43. The gripping portion 42 is a portion that directly grips the governor rope 12, and has a groove 42a on its surface at a position corresponding to the governor rope 12 so as to grip the governor rope 12 in the groove 42a when gripping the governor rope 12. In this way, the speed governor rope 12 can be prevented from slipping off the clamping portion during clamping, and the friction surface between the clamping portion 42 and the speed governor rope 12 can be increased to increase the friction force. The clamping portion 42 is fixed to the swing jaw body 41 by a bolt 44.
The swing jaw body 41 has a groove on an arc surface contacting the clamping portion 42, and the 1 st heat radiating portion 43 is disposed in the groove. The holding portion 42 and the swing jaw body 41 hold and fix the 1 st heat radiating portion 43 in the groove. One surface of the 1 st heat radiation part 43 is in contact with the clamping part 42. The 1 st heat radiating portion 43 has a wedge-shaped protruding portion 43a protruding downward of the swing jaw 31. The heat conductivity of the 1 st heat radiating portion 43 is greater than that of the swing jaw body 41 provided with the heat radiating portion. For example, the swing jaw body 41 and the clamping portion 42 are made of cast iron, and the 1 st heat radiating portion 43 is made of copper. The thermal conductivity of iron is about 84[ W/mK ], and the thermal conductivity of copper is about 398[ W/mK ]. The 1 st heat radiation part 43 having a large thermal conductivity can increase the heat radiation speed of the swing clamp 31.
Fig. 6 is a front view schematically showing the structure of the fixed jaw. Fig. 7 is a plan view schematically showing the fixed jaw structure. Fig. 8 is a right side view schematically showing the fixed jaw structure. As shown, the fixed jaw 32 includes a fixed jaw body 45 and a 2 nd heat release portion 47. The fixed clamp block body 45 is provided with a plurality of bolt holes 46. The fixed jaw body 45 and the 2 nd heat radiating portion 47 are fixed to the housing 21 of the governor 9 by bolts (see fig. 2). The fixed jaw body 45 has a holding surface 45a for holding the governor rope 12.
The fixed jaw body 45 has a groove penetrating vertically on the side contacting the frame 21, and the 2 nd heat radiating portion 47 is provided in the groove. One surface of the 2 nd heat radiation part 47 is in contact with the frame 21. The 2 nd heat radiating portion 47 has a projecting portion 47a projecting downward of the fixed jaw 32. The heat conductivity of the 2 nd heat radiating portion 47 is greater than that of the fixed jaw body 45 provided with the heat radiating portion. For example, the fixed jaw body 45 may be formed of cast iron, and the 2 nd heat radiating portion 47 may be formed of copper. The 2 nd heat radiation portion 47 having a large thermal conductivity can increase the heat radiation speed of the fixed clamp block 32.
Fig. 9 is a schematic projection view of the section a-a shown in fig. 3. A1 st heat receiving unit 48 is provided at a position corresponding to the 1 st heat radiating unit 43 and a 2 nd heat receiving unit 49 is provided at a position corresponding to the 2 nd heat radiating unit 47 in the bottom of the housing 21. The heat transfer coefficients of the 1 st heat receiving block 48 and the 2 nd heat receiving block 49 are larger than the heat transfer coefficient of the housing 21. For example, the frame 21 may be made of an iron plate or a steel plate, and the 1 st heat receiving block 48 and the 2 nd heat receiving block 49 may be made of copper.
As shown in fig. 3, when the swing jaw 31 and the fixed jaw 32 sandwich the governor rope 12, the 1 st heat radiating unit 43 contacts the 1 st heat receiving unit 48, and the 2 nd heat radiating unit 47 contacts the 2 nd heat receiving unit 49. Specifically, the 1 st heat receiving block 48 has a concave portion 48a that matches the protruding portion 43a of the 1 st heat radiation unit 43. When the swing jaw 31 drops and clamps the governor rope 12 together with the fixed jaw 32, the protrusion 43a of the 1 st heat radiating portion 43 can be inserted into the recess 48a of the 1 st heat receiving portion 48, so that frictional heat generated at the clamping portion 42 of the swing jaw 31 can be quickly transferred from the 1 st heat radiating portion 43 to the 1 st heat receiving portion 48 and then from the 1 st heat receiving portion 48 to the housing 21 having a larger volume, thereby effectively suppressing an increase in temperature of the swing jaw 31.
The 2 nd heat receiving block 49 has a concave portion 49a matching with the protruding portion 47a of the 2 nd heat radiating block 47. When the fixing jaw 32 is attached, the projection 47a of the 2 nd heat radiating unit 47 is inserted into the recess 49a of the 2 nd heat receiving unit 49, and then the fixing jaw body 45 and the 2 nd heat radiating unit 47 are fixed to the frame 21 by bolts. When the swinging shoe 31 and the fixed shoe 32 clamp the governor rope 12, frictional heat generated at the clamping surface 45a of the fixed shoe 32 can be quickly transmitted from the 2 nd heat-radiating portion 47 to the 2 nd heat-receiving portion 49, and then from the 2 nd heat-receiving portion 49 to the housing 21 having a larger volume, thereby effectively suppressing a temperature increase of the fixed shoe 32.
As described above, in the present embodiment, since the material such as cast iron having high strength can be used for the clamping portion 42 of the swing jaw 31 and the fixed jaw body 45, and the 1 st heat radiation portion 43 and the 2 nd heat radiation portion 47 having high thermal conductivity are provided for the swing jaw 31 and the fixed jaw 32, respectively, the swing jaw 31 and the fixed jaw 32 can have sufficient strength required for clamping the governor rope 12, and temperature increases of the swing jaw 31 and the fixed jaw 32 can be effectively suppressed. The temperature rise of the swing jaw 31 and the fixed jaw 32 is suppressed, and the wear of the swing jaw 31 and the fixed jaw 32 can be reduced, thereby extending the life of the governor 9.
The configuration in which the protruding portion 43a is provided in the 1 st heat radiation unit 43 and the recessed portion 48a is provided in the 1 st heat receiving unit 48 is a preferable configuration of the present invention, and is not essential. For example, the lower end of the 1 st heat radiation part 43 may be processed into a flat surface without providing the protrusion 43 a. In addition, the surface of the 1 st heat receiving block 48 may be simply processed into a flat surface without providing the concave portion 48 a. When the swing jaw 31 and the fixed jaw 32 sandwich the governor rope 12, the lower end plane of the 1 st heat radiating portion 43 is in contact with the surface plane of the 1 st heat receiving portion 48, so that frictional heat can be transmitted from the 1 st heat radiating portion 43 to the 1 st heat receiving portion 48, and a temperature increase of the swing jaw 31 can also be suppressed.
However, compared to the case where the 1 st heat radiating unit 43 and the 1 st heat receiving unit 48 are in planar contact, the case where the protrusion 43a is provided on the 1 st heat radiating unit 43 and the recess 48a is provided on the 1 st heat receiving unit 48 can greatly increase the contact area between the 1 st heat radiating unit 43 and the 1 st heat receiving unit 48, thereby increasing the heat transfer rate.
Similarly, the configuration in which the protrusion 47a is provided in the 2 nd heat radiation unit 47 and the recess 49a is provided in the 2 nd heat receiving unit 49 is also a preferable configuration of the present invention, and is not essential. For example, the lower end of the 2 nd heat radiation portion 47 may be processed into a flat surface without providing the protrusion 47 a. In addition, the surface of the 2 nd heat receiving block 49 may be simply processed into a flat surface without providing the concave portion 49 a. If the lower end plane of the 2 nd heat radiating unit 47 is brought into contact with the surface plane of the 2 nd heat receiving unit 49, frictional heat generated when the governor rope 12 is gripped can be transmitted from the 2 nd heat radiating unit 47 to the 2 nd heat receiving unit 49, and an increase in temperature of the fixed jaw 32 can be suppressed.
However, compared to the case where the 2 nd heat radiating unit 47 and the 2 nd heat receiving unit 49 are in planar contact, the case where the protrusion 47a is provided on the 2 nd heat radiating unit 47 and the recess 49a is provided on the 2 nd heat receiving unit 49 can greatly increase the contact area between the 2 nd heat radiating unit 47 and the 2 nd heat receiving unit 49, thereby increasing the speed of heat transfer.
In another preferred embodiment of the present invention, a heat dissipating paste may be applied in advance to a portion where the 1 st heat radiating unit 43 and the 1 st heat receiving unit 48 are in contact with each other. Thus, when the 1 st heat radiating unit 43 is in contact with the 1 st heat receiving unit 48, the heat paste can compensate for a gap that may be formed therebetween, thereby improving the heat transfer effect therebetween. Similarly, a heat dissipating paste may be applied in advance to a portion where the 2 nd heat radiating unit 47 and the 2 nd heat receiving unit 49 are in contact with each other. The heat-dissipating paste can make up for a gap which may be formed between the two, thereby improving the heat transfer effect between the two.
The present invention is not limited to the above-described embodiments, and various modifications are also included. For example, in the above-described embodiments, the present invention is described in detail for easy understanding, but the present invention is not limited to the embodiments having all the above-described components. Note that some of the technical features of one embodiment may be replaced with those of another embodiment, and some of the components of one embodiment may be added to another embodiment. Further, some of the components of each embodiment may be added, replaced, or deleted with other technical features.
Claims (4)
1. A speed governor of an elevator, comprising: a horizontal shaft supported by the frame; a governor sheave provided on the horizontal shaft; the fixed clamp block is fixed on the frame body; the swinging clamp block is arranged on the other side of the speed limiter rope relative to the fixed clamp block in a swinging mode; a throwing block rotating together with the speed governor rope wheel and throwing outwards relative to the speed governor rope wheel under the action of centrifugal force; and a block locking mechanism for locking the swinging block in a normal operating state to keep a predetermined distance between the swinging block and the speed governor rope, releasing the swinging block under the trigger of a throwing block to clamp the speed governor rope together with the fixed block,
the speed limiter is characterized in that:
at least one of the fixed clamp block and the swinging clamp block is provided with a heat release part, the heat conductivity coefficient of the heat release part is larger than that of the body of the clamp block provided with the heat release part,
the frame body is provided with a heat receiving part corresponding to the heat releasing part, the heat conductivity coefficient of the heat receiving part is larger than that of the frame body, and when the swing clamp block and the fixed clamp block clamp the speed governor rope, the heat releasing part is in contact with the heat receiving part.
2. The governor of claim 1, wherein:
the heat radiating portion has a protruding portion protruding downward of the caliper block provided with the heat radiating portion,
the heat receiving unit has a concave portion that fits the protruding portion.
3. The governor of claim 1 or 2, wherein:
and a part of the heat radiating part, which is contacted with the heated part, is coated with heat radiating paste.
4. An elevator, which comprises a car, a counterweight and a traction machine, the elevator being characterized in that:
a speed limiter according to any one of claims 1 to 3 is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810648903.9A CN110626905B (en) | 2018-06-22 | 2018-06-22 | Elevator and speed limiter thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810648903.9A CN110626905B (en) | 2018-06-22 | 2018-06-22 | Elevator and speed limiter thereof |
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| Publication Number | Publication Date |
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| CN110626905A CN110626905A (en) | 2019-12-31 |
| CN110626905B true CN110626905B (en) | 2021-01-15 |
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| CN201810648903.9A Active CN110626905B (en) | 2018-06-22 | 2018-06-22 | Elevator and speed limiter thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112473039A (en) * | 2020-12-15 | 2021-03-12 | 国网山东省电力公司烟台市牟平区供电公司 | A prevent falling device for power supply company overhauls |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU779232A1 (en) * | 1978-11-02 | 1980-11-15 | Московский Опытно-Экспериментальный Лифтостроительный Завод | Lift cage catcher |
| JP2004530612A (en) * | 2001-06-29 | 2004-10-07 | インベンテイオ・アクテイエンゲゼルシヤフト | Cable brake of speed limiter for elevator |
| JP4580748B2 (en) * | 2004-12-15 | 2010-11-17 | 株式会社日立製作所 | Elevator governor |
| JP4826206B2 (en) * | 2005-10-28 | 2011-11-30 | 株式会社日立製作所 | Elevator emergency stop device |
| JP2015168486A (en) * | 2014-03-04 | 2015-09-28 | 株式会社日立製作所 | Elevator emergency stop device |
| CN204138077U (en) * | 2014-08-06 | 2015-02-04 | 赵斌 | A kind of elevator governor |
| JP6422396B2 (en) * | 2015-05-21 | 2018-11-14 | 三菱電機株式会社 | Elevator emergency stop device |
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2018
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