CN111776910A - Pulley type anti-failure elevator safety tongs and elevator - Google Patents
Pulley type anti-failure elevator safety tongs and elevator Download PDFInfo
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- CN111776910A CN111776910A CN202010713642.1A CN202010713642A CN111776910A CN 111776910 A CN111776910 A CN 111776910A CN 202010713642 A CN202010713642 A CN 202010713642A CN 111776910 A CN111776910 A CN 111776910A
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- wedge block
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- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 230000009977 dual effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
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- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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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
- B66B5/22—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 means of linearly-movable wedges
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention discloses a pulley type failure-prevention elevator safety tongs, wherein a main accommodating groove is formed in a main wedge block, the opening of the main accommodating groove faces a guide rail, a roller is arranged in the main accommodating groove, the roller partially extends out of the main accommodating groove, a traction rope is wound on the roller, an auxiliary accommodating groove is formed in an auxiliary wedge block, a fixed pulley is arranged in the auxiliary accommodating groove, a fixed hole is formed in an auxiliary tong body, a fixed pin is arranged at the head of the traction rope, the fixed pin sequentially penetrates out of the main wedge block, penetrates into the auxiliary wedge block and is inserted into the fixed hole after being wound around the fixed pulley, a spring is arranged between the bottom of each auxiliary wedge block and the auxiliary tong body, and the length of the traction rope between the roller and the fixed pulley is greater. An elevator adopts above-mentioned pulley type to prevent losing effect elevator safety tongs. The advantages are that: the device can automatically start the auxiliary clamp body to generate braking force under the condition that the main clamp body fails, and the safety factor is improved. After the elevator adopts above-mentioned structure, for ordinary elevator dual guarantee has been had occasionally in the inefficacy, ensure car safety.
Description
Technical Field
The invention relates to a pulley type failure-prevention elevator safety gear and an elevator.
Background
The elevator is the transportation equipment that people are commonly used, and high-rise building all uses car elevator especially, and current car elevator all is equipped with safety tongs, but a guide rail generally corresponds and sets up a safety tongs, and when the elevator dropped down suddenly, the safety tongs can be drawn close each other and press from both sides tight guide rail, plays emergency braking's effect, nevertheless because only a safety tongs, in case can produce very big threat to the life of the person of taking in the elevator in failure.
Disclosure of Invention
The invention aims to provide pulley-type failure-prevention elevator safety tongs and an elevator, and can effectively solve the problem that the existing elevator has only one pair of safety tongs and is insufficient in safety coefficient.
In order to solve the technical problems, the invention is realized by the following technical scheme: the pulley type failure-prevention elevator safety tongs comprise a lifting rod, a main tong body and an auxiliary tong body, wherein the main tong body is arranged above the auxiliary tong body, two main wedge blocks which move upwards along the vertical direction under the action of the lifting rod and mutually approach to clamp a guide rail are arranged in the main tong body, each main wedge block is connected with one lifting rod, and two auxiliary wedge blocks which move upwards along the vertical direction and mutually approach to clamp the guide rail are arranged in the auxiliary tong body;
it has main holding tank to open in the master wedge, main holding tank opening is towards the guide rail, be equipped with the gyro wheel in the main holding tank, the gyro wheel part stretches out main holding tank, around there being the haulage rope on the gyro wheel, it has vice holding tank to open in the vice wedge, be equipped with the fixed pulley in the vice holding tank, it has the fixed orifices to open on the vice pincers body, the fixed pin is installed to the head of haulage rope, the fixed pin is worn out the master wedge in proper order, is penetrated vice wedge, is walked around and inserts the fixed orifices after the fixed pulley, every the bottom of vice wedge all with vice pincers between be equipped with the spring, distance that the haulage rope length between gyro wheel and the fixed pulley rises when being greater than the master wedge braking is apart from between.
Preferably, the main clamp body and the auxiliary clamp body are integrally arranged; or the main clamp body and the auxiliary clamp body are fixedly connected through bolts. The integrally arranged main clamp body and the auxiliary clamp body have good rigidity and connection stability, and the safety is higher; the split main clamp body and the split auxiliary clamp body are suitable for improving the existing equipment, the maintenance cost can be reduced, and the main clamp body or the auxiliary clamp body with a fault can be independently replaced.
Preferably, the internal main cavity room that is equipped with of main tong, the inside wall of main cavity room is close to the main cavity middle part from supreme down gradually and forms main spigot surface, be equipped with two in the main cavity room main voussoir, two leave the clearance that lets the guide rail pass through between the main voussoir, two main voussoir all is equipped with the main wedge inclined plane with main spigot surface looks adaptation. When the main wedge block moves under the action of upward force, the main guide surface is contacted with the inclined surface of the main wedge block, and the two main wedge blocks are extruded towards the middle to be close to each other and tightly hold the guide rail for braking.
Preferably, the surface of the main wedge opposite to the guide rail is a plane. The plane is easy to process, is beneficial to reducing the production cost and is convenient to install.
Preferably, the auxiliary clamp body is internally provided with an auxiliary cavity, the inner side wall of the auxiliary cavity is gradually close to the middle part of the auxiliary cavity from bottom to top to form an auxiliary guide surface, two auxiliary wedge blocks are arranged in the auxiliary cavity, a gap for the guide rail to pass through is also reserved between the two auxiliary wedge blocks, and the two auxiliary wedge blocks are both provided with auxiliary wedge inclined surfaces matched with the auxiliary guide surfaces. When the auxiliary wedge block moves upwards under the action of the main wedge block, the auxiliary guide surface contacts with the inclined surface of the auxiliary wedge block to extrude the two auxiliary wedge blocks towards the middle, so that the two auxiliary wedge blocks are close to each other to hold the guide rail tightly for braking.
Preferably, the surface of the auxiliary wedge block opposite to the guide rail is a plane.
Preferably, the lifting rod is fixedly connected with the top of the corresponding main wedge block. The lifting rod generates upward pulling force to pull the main wedge blocks to close.
Preferably, the side surface of the auxiliary chamber is open, and a baffle plate for closing the opening is arranged on the side surface of the auxiliary clamp body. The side opening, the convenience is inserted the fixed pin in the fixed orifices.
Preferably, the idler wheel comprises a wheel shaft, a rope winder and two rubber wheels, the wheel shaft is rotatably connected to the main wedge block, the rope winder is sleeved on the wheel shaft, the traction rope is wound on the rope winder, and the two rubber wheels are respectively fixed at two ends of the rope winder. Through the ropewinder, conveniently accomodate the haulage rope, fix the rubber tyer at the both ends of ropewinder simultaneously, prevent ropewinder and guide rail bump.
An elevator adopts above-mentioned pulley type to prevent losing effect elevator safety tongs.
Compared with the prior art, the invention has the advantages that: through setting up vice pincers bodies, when the main pincers body became invalid, the gyro wheel will continue to rotate with the guide rail contact to begin the rolling haulage rope, the head of haulage rope will break away from in the fixed orifices, vice voussoir upward movement under the effect of spring, the interval between two vice voussoirs reduces and embraces the guide rail tightly, produces the braking force, stops the car brake, and this device can the automatic start vice pincers body production braking force under the condition that the main pincers body became invalid, has improved factor of safety. After the elevator adopts above-mentioned structure, for ordinary elevator dual guarantee has been had occasionally in the inefficacy, ensure car safety.
Drawings
FIG. 1 is a view of the pulley type fail-safe elevator safety gear of the present invention;
FIG. 2 is a schematic view of the structure A-A in FIG. 1.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1 and 2, the embodiment of the pulley-type failure-prevention elevator safety gear of the invention is shown, the pulley-type failure-prevention elevator safety gear comprises a lifting rod 1, a main gear body 2 and an auxiliary gear body 3, wherein the main gear body 2 is arranged above the auxiliary gear body 3, two main wedges 5 moving upwards along the vertical direction under the action of the lifting rod 1 and approaching to a clamping guide rail 4 are arranged in the main gear body 2, each main wedge 5 is connected with one lifting rod 1, and two auxiliary wedges 6 moving upwards along the vertical direction and approaching to the clamping guide rail 4 are arranged in the auxiliary gear body 3;
the main wedge block 5 is internally provided with a main accommodating groove 20, the main accommodating groove 20 is opened towards the guide rail 4, a roller 21 is arranged in the main accommodating groove, the roller partially extends out of the main accommodating groove, a traction rope 22 is wound on the roller 21, an auxiliary accommodating groove 23 is formed in the auxiliary wedge block, a fixed pulley 24 is arranged in the auxiliary accommodating groove 23, an auxiliary clamp body is provided with a fixed hole 25, the head of the traction rope 22 is provided with a fixed pin 26, the fixed pin 26 sequentially penetrates out of the main wedge block, penetrates into the auxiliary wedge block and bypasses the fixed pulley 24 to be inserted into the fixed hole 25, the length of the fixed pin 26 is preferably larger than that of the fixed hole 25, the fixed pin 26 is preferably partially arranged in the auxiliary wedge block 6 in the fixed hole 25, so that the fixed relative position of the auxiliary wedge block can be kept, meanwhile, the fixed pin can be smoothly drawn out of the fixed hole when the traction rope is drawn out, and a spring 27 is arranged between the bottom, the length of the pull rope 22 between the roller and the fixed pulley 24 is greater than the distance that the main wedge rises when braking plus the distance between the roller and the fixed pulley 24.
Through setting up vice pincers bodies, when main pincers body became invalid, the gyro wheel will continue to rotate with the guide rail contact to begin the rolling haulage rope 22, the head of haulage rope 22 will break away from in the fixed orifices 25, vice voussoir upward movement under spring 27's effect, the guide rail is held tightly in the reduction of the interval between two vice voussoirs, produces the braking force, stops the car brake, this device can the vice pincers body of automatic start production braking force under the condition that main pincers body became invalid, factor of safety has been improved. After the elevator adopts above-mentioned structure, for ordinary elevator dual guarantee has been had occasionally in the inefficacy, ensure car safety.
Generally, it is preferable that the main clamp body 2 and the auxiliary clamp body 3 are manufactured integrally, so that the safety and the stability are relatively high, and of course, the main clamp body 2 and the auxiliary clamp body 3 can be separately arranged and connected through bolts, so that the old equipment is convenient to reform, and the maintenance cost is also favorably reduced.
To the structure of the main tong body 2, be equipped with main cavity room 7 in the main tong body 2, the inside wall of main cavity room 7 is close to formation main spigot surface 8 from supreme to main cavity room 7 middle part gradually down, be equipped with two in the main cavity room 7 main voussoir 5, two leave the clearance that lets guide rail 4 pass through between the main voussoir 5, two main voussoir 5 all is equipped with the main wedge inclined plane 9 with 8 looks adaptations of main spigot surface, main voussoir 5 is the plane with the relative face of guide rail 4, and it also can understand for main cavity room 7 is the four terrace with edges on only one inclined plane, and main voussoir 5 is the four terrace with edges on only one inclined plane, and the track of main voussoir 5 upward movement can also be controlled in the time of providing main voussoir 5 lateral force to such design, guarantees that main voussoir 5 can not take place the rotation when the motion, makes main vous. The gap between the two main wedges 5 allows the guide rail to pass through when the elevator normally moves, and when emergency braking is needed, the two main wedges are close to each other, and the gap gradually disappears.
Similarly, the structure of the auxiliary clamp body 3 is similar to that of the main clamp body 2, an auxiliary cavity 10 is arranged in the auxiliary clamp body 3, the inner side wall of the auxiliary cavity 10 is gradually close to the middle of the auxiliary cavity 10 from bottom to top to form an auxiliary guide surface 11, two auxiliary wedge blocks 6 are arranged in the auxiliary cavity 10, a gap for the guide rail 4 to pass through is also reserved between the two auxiliary wedge blocks 6, the two auxiliary wedge blocks 6 are both provided with auxiliary wedge inclined surfaces 12 matched with the auxiliary guide surfaces 11, and the surfaces of the auxiliary wedge blocks 6 opposite to the guide rail 4 are planes.
In the design, the lifting rod 1 is fixedly connected with the top of the corresponding main wedge block 5, and when the car falls, the lifting rod 1 moves upwards to pull the main wedge block 5 upwards, so that the main wedge block 5 clamps the guide rail 4 for braking.
The side of the auxiliary chamber is open, the side of the auxiliary clamp body is provided with a baffle 28 for sealing the opening, the fixing pin 26 at the head of the traction rope 22 needs to be inserted into the fixing hole 25, so that the opening is arranged for convenient installation, the opening is sealed by the baffle 28 after installation, and foreign matters are prevented from entering to influence the work of the auxiliary clamp body.
Because the traction rope 22 is wound on the roller, in order to protect the traction rope 22, the roller 21 comprises a wheel shaft 29, a rope winder 30 and two rubber wheels 31, the wheel shaft 29 is rotatably connected to the main wedge block, the rope winder 30 is sleeved on the wheel shaft 29, the traction rope 22 is wound on the rope winder 30, the two rubber wheels 31 are respectively fixed at two ends of the rope winder 30, the traction rope 22 is protected through the rubber wheels 31, the traction rope 22 is prevented from touching a guide rail, and meanwhile, friction force can be increased through the rubber wheels 31, so that the wheel shaft 29 can rotate as soon as possible to wind the traction rope 22.
The invention also discloses an elevator, and the pulley type anti-failure elevator safety tongs adopting the technical scheme are adopted.
During the use, with lifting rod 1 installation, if the car falls, lifting rod 1 pulling main voussoir 5 upward movement, two main voussoir 5 draw close each other under the effect of leading guiding surface 8, press from both sides tight guide rail 4, this in-process because main voussoir 5 upward movement can lead to the distance between main voussoir 5 and the vice voussoir 6 to elongate, main voussoir 5 also can not stand the horse with guide rail 4 contact and make the car stop motion in addition, gyro wheel 21 can take place to rotate and will roll up partial haulage rope 22, consequently, haulage rope 22 length between gyro wheel and fixed pulley 24 will reserve sufficient surplus to avoid playing the effect at main voussoir 5 and touching by mistake and arouse vice voussoir 6 also to participate in the braking. Certainly, if the braking force of the main wedge 5 is insufficient, the roller continues to rotate to cause the auxiliary wedge 6 to participate in braking, when the braking of the main wedge 5 fails or the braking force of the main wedge 5 is insufficient, the car cannot stop sliding downwards, the roller always contacts with the guide rail, the roller always rotates to wind the traction rope 22, the fixing pin 26 at the head of the traction rope 22 is separated from the fixing hole 25, the auxiliary wedge 6 moves upwards due to the action of the spring 27, the interaction between the auxiliary guide surface 11 and the auxiliary wedge inclined surface 12 is reduced gradually, the distance between the two auxiliary wedges 6 is finally clamped with the guide rail, the braking force is generated, the car continues to fall, and the auxiliary clamp 3 plays a role after the main clamp 2 fails, so that the safety of the elevator is ensured.
The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.
Claims (10)
1. Pulley type anti-failure elevator safety tongs, which is characterized in that: the clamp comprises a lifting rod (1), a main clamp body (2) and an auxiliary clamp body (3), wherein the main clamp body (2) is arranged above the auxiliary clamp body (3), two main wedge blocks (5) which move upwards along the vertical direction under the action of the lifting rod (1) and mutually approach to a clamping guide rail (4) are arranged in the main clamp body (2), each main wedge block (5) is connected with one lifting rod (1), and two auxiliary wedge blocks (6) which move upwards along the vertical direction and mutually approach to the clamping guide rail (4) are arranged in the auxiliary clamp body (3); a main accommodating groove (20) is formed in the main wedge block (5), the opening of the main accommodating groove (20) faces the guide rail (4), a roller (21) is arranged in the primary accommodating groove, the roller partially extends out of the primary accommodating groove, a traction rope (22) is wound on the roller (21), an auxiliary accommodating groove (23) is formed in the auxiliary wedge block, a fixed pulley (24) is arranged in the auxiliary accommodating groove (23), the auxiliary clamp body is provided with a fixing hole (25), the head of the traction rope (22) is provided with a fixing pin (26), the fixing pins (26) sequentially penetrate out of the main wedge block, penetrate into the auxiliary wedge blocks, pass through the fixed pulley (24) and then are inserted into the fixing holes (25), a spring (27) is arranged between the bottom of each auxiliary wedge block and the auxiliary clamp body, the length of the traction rope (22) between the roller and the fixed pulley (24) is greater than the distance of the lifting of the main wedge block during braking plus the distance between the roller and the fixed pulley (24).
2. The pulley-type failure-prevention elevator safety gear according to claim 1, characterized in that: the main clamp body (2) and the auxiliary clamp body (3) are integrally arranged; or the main clamp body (2) and the auxiliary clamp body (3) are fixedly connected through bolts.
3. The pulley-type failure-prevention elevator safety gear according to claim 1, characterized in that: be equipped with main cavity room (7) in the main tong body (2), the inside wall of main cavity room (7) is from supreme being close to formation main spigot surface (8) to main cavity room (7) middle part gradually down, be equipped with two in main cavity room (7) main voussoir (5), two leave the clearance that lets guide rail (4) pass through between main voussoir (5), two main voussoir (5) all are equipped with main wedge inclined plane (9) with main spigot surface (8) looks adaptation.
4. The pulley-type failure-prevention elevator safety gear according to claim 3, characterized in that: the surface of the main wedge block (5) opposite to the guide rail (4) is a plane.
5. The pulley-type failure-prevention elevator safety gear according to claim 1, characterized in that: be equipped with vice cavity (10) in vice pincers body (3), the inside wall of vice cavity (10) is close to formation vice spigot surface (11) from supreme down to vice cavity (10) middle part gradually, be equipped with two in vice cavity (10) vice voussoir (6), two also leave the clearance that lets guide rail (4) pass through between vice voussoir (6), two vice voussoir (6) all are equipped with vice wedge inclined plane (12) with vice spigot surface (11) looks adaptation.
6. The pulley-type fail-safe elevator safety gear according to claim 5, characterized in that: the surface of the auxiliary wedge block (6) opposite to the guide rail (4) is a plane.
7. The pulley-type failure-prevention elevator safety gear according to claim 1, characterized in that: the lifting rod (1) is fixedly connected with the top of the corresponding main wedge block (5).
8. The pulley-type fail-safe elevator safety gear according to claim 5, characterized in that: the side surface of the auxiliary chamber is opened, and the side surface of the auxiliary clamp body is provided with a baffle plate (28) for closing the opening.
9. The pulley-type failure-prevention elevator safety gear according to claim 1, characterized in that: the roller (21) comprises a wheel shaft (29), a rope winder (30) and two rubber wheels (31), the wheel shaft (29) is rotatably connected to a main wedge block, the rope winder (30) is sleeved on the wheel shaft (29), the traction rope (22) is wound on the rope winder (30), and the two rubber wheels (31) are respectively fixed at two ends of the rope winder (30).
10. An elevator characterized in that: use of a pulley-type fail-safe elevator safety gear according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010713642.1A CN111776910B (en) | 2020-07-20 | 2020-07-20 | Pulley type failure-proof elevator safety tongs and elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010713642.1A CN111776910B (en) | 2020-07-20 | 2020-07-20 | Pulley type failure-proof elevator safety tongs and elevator |
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| Publication Number | Publication Date |
|---|---|
| CN111776910A true CN111776910A (en) | 2020-10-16 |
| CN111776910B CN111776910B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010713642.1A Active CN111776910B (en) | 2020-07-20 | 2020-07-20 | Pulley type failure-proof elevator safety tongs and elevator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007204165A (en) * | 2006-01-30 | 2007-08-16 | Toshiba Elevator Co Ltd | Emergency stop device for elevator |
| CN108584610A (en) * | 2018-07-20 | 2018-09-28 | 浙江巨通电梯有限公司 | Elevator safety gear |
| EP3620419A1 (en) * | 2018-09-07 | 2020-03-11 | KONE Corporation | Constant deceleration progressive safety gear system |
| CN210884789U (en) * | 2019-09-26 | 2020-06-30 | 张家港市启元电梯配件制造有限公司 | Double-braking box type elevator safety tongs |
| CN213415930U (en) * | 2020-07-20 | 2021-06-11 | 台州学院 | Pulley type anti-failure elevator safety tongs and elevator |
-
2020
- 2020-07-20 CN CN202010713642.1A patent/CN111776910B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007204165A (en) * | 2006-01-30 | 2007-08-16 | Toshiba Elevator Co Ltd | Emergency stop device for elevator |
| CN108584610A (en) * | 2018-07-20 | 2018-09-28 | 浙江巨通电梯有限公司 | Elevator safety gear |
| EP3620419A1 (en) * | 2018-09-07 | 2020-03-11 | KONE Corporation | Constant deceleration progressive safety gear system |
| CN210884789U (en) * | 2019-09-26 | 2020-06-30 | 张家港市启元电梯配件制造有限公司 | Double-braking box type elevator safety tongs |
| CN213415930U (en) * | 2020-07-20 | 2021-06-11 | 台州学院 | Pulley type anti-failure elevator safety tongs and elevator |
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| Publication number | Publication date |
|---|---|
| CN111776910B (en) | 2024-05-03 |
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