CN107867616B - Elevator rope gripper - Google Patents
Elevator rope gripper Download PDFInfo
- Publication number
- CN107867616B CN107867616B CN201610856554.0A CN201610856554A CN107867616B CN 107867616 B CN107867616 B CN 107867616B CN 201610856554 A CN201610856554 A CN 201610856554A CN 107867616 B CN107867616 B CN 107867616B
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- Prior art keywords
- rod
- elevator
- arresting
- spring
- driving rod
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- 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.)
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- 230000000903 blocking effect Effects 0.000 claims abstract description 34
- 230000009471 action Effects 0.000 claims description 14
- 230000007704 transition Effects 0.000 claims description 13
- 230000004888 barrier function Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 19
- 239000010959 steel Substances 0.000 description 19
- 230000001960 triggered effect Effects 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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
- B66B5/16—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses a kind of elevator rope grippers comprising rope guarding plate, drive rod, blocking rod, electromagnetic coil, spring；Drive rod includes the thin segment being sequentially coaxially fixed together from front to back, changeover portion, thick section；Thin segment, thick section are cylindrical；The outer diameter of changeover portion becomes larger from front to back；Rope guarding plate is fixed on thin segment front end；Blocking rod and drive rod are orthogonal direction arrangement, and bottom end is resisted against on spring；Electromagnetic coil fixation is set in outside blocking rod；When elevator is powered, electromagnetic coil energization keeps blocking rod mobile to bottom end and compressed spring, and blocking rod top is far from drive rod axis；When elevator power-off, electromagnetic coil power-off, the elastic force of spring leans out blocking rod close to drive rod axis.Elevator rope gripper of the invention will not cause to wear to wirerope and rope guarding plate, will not unexpectedly trigger the safety tongs movement to link therewith, reduce elevator maintenance cost in use.
Description
Technical Field
The invention relates to the elevator safety protection technology, in particular to an elevator rope gripper with power failure delay action.
Background
Along with the continuous deepening of the urbanization process, the demand of the elevator is continuously enlarged, people use the elevator more and more frequently, and the safety of the elevator is also more emphasized. The rope clamping device is widely used for elevator safety protection such as ascending overspeed protection, car accidental movement prevention, brake failure prevention and the like, and gradually becomes a necessary safety component of an elevator. For safety, the common elevator rope clamping device adopts a power-off triggering mode, namely when the elevator is powered off, the rope clamping device can act immediately. The action of the rope clamp is often faster than that of the brake, so that the rope pressing plate presses the steel wire rope still in motion, and serious abrasion is caused to the rope pressing plate and the steel wire rope. Frequent and unnecessary actions tend to shorten the service life of the rope pressing plate and the steel wire rope, and the cost of the elevator in use is increased. In addition, when the rope clamp cooperates with the safety gear to prevent the car from moving accidentally, the elevator is powered off and unnecessary actions of the safety gear can be triggered.
Disclosure of Invention
The invention aims to solve the technical problem of providing an elevator rope gripper which can not cause abrasion to a steel wire rope and a rope pressing plate and can not accidentally trigger the action of a safety gear linked with the steel wire rope and the rope pressing plate, thereby reducing the maintenance cost of the elevator in use.
In order to solve the technical problem, the elevator rope clamping device provided by the invention comprises a rope pressing plate, a driving rod, a blocking rod, an electromagnetic coil and a spring;
the driving rod comprises a thin section, a transition section and a thick section which are coaxially and fixedly connected together from front to back in sequence;
the thin section and the thick section are both cylindrical; the outer diameter of the thin section is smaller than that of the thick section;
the outer diameter of the transition section is gradually increased from front to back;
the rope pressing plate is fixed at the front end of the thin section;
the arresting rod and the driving rod are arranged in an orthogonal direction, and the bottom end of the arresting rod abuts against the spring; when the elevator rope clamping device does not trigger the rope clamping action, the arresting rod is positioned at the thin section of the driving rod, and when the elevator rope clamping device triggers the rope clamping action, the arresting rod is positioned at the thick section of the driving rod;
the electromagnetic coil is fixedly sleeved outside the blocking rod;
when the elevator is electrified, the electromagnetic coil is electrified to generate electromagnetic force to enable the arresting rod to move towards the bottom end and compress the spring, the top end of the arresting rod is far away from the axis of the driving rod, and the distance from the top end of the arresting rod to the axis of the driving rod is greater than or equal to R3，R3Is a thick section radius;
when the elevator is powered off, the electromagnetic coil is powered off and does not generate electromagnetic force, the blocking rod is extended out to be close to the axis of the driving rod by the elastic force of the spring, and the distance from the top end of the blocking rod to the axis of the driving rod is more than or equal to R when the blocking rod is completely extended out1And is not more than (R)1+R3)/2，R1Is the radius of the thin section.
Preferably, the top of the arresting rod is provided with a roller;
when the elevator is electrified, the electromagnetic coil is electrified to generate electromagnetic force to enable the arresting rod to move towards the bottom end and compress the spring, the roller at the top end of the arresting rod is far away from the axis of the driving rod, and the distance from the roller at the top end of the arresting rod to the axis of the driving rod is greater than or equal to R3；
When the elevator is powered off, the electromagnetic coil is powered off and does not generate electromagnetic force, the blocking rod is extended out to be close to the axis of the driving rod by the elastic force of the spring, and the distance from the roller at the top end of the blocking rod to the axis of the driving rod is greater than or equal to R when the blocking rod is completely extended out1And is not more than (R)1+R3)/2。
Preferably, the elevator rope clamping device further comprises a feedback contact;
the feedback contact is rigidly connected with the arresting rod.
Preferably, the elevator rope clamping device further comprises a tubular support;
the driving rod is arranged inside the tubular bracket;
one or more accommodating hole grooves are formed in the front end of the tubular support along the circumferential direction;
the spring is placed at the bottom of the containing hole groove, the bottom of the blocking rod is placed in the containing hole groove and abutted against the spring, and the electromagnetic coil is fixedly arranged at the top opening of the containing hole groove and sleeved outside the blocking rod.
Preferably, the arresting bar is provided in plurality.
Preferably, there are 2, 3 or 4 of said bars.
Preferably, the front end of the accommodating hole groove is provided with a notch, and the feedback contact is rigidly connected with the blocking rod through a rigid connecting piece penetrating through the notch.
Preferably, the front end face of the rope pressing plate is provided with a V-shaped or U-shaped groove.
Preferably, the thin section and the thick section are both cylindrical.
Preferably, the feedback contact is turned off when the arresting rod moves towards the bottom end and compresses the spring, and is turned on when the arresting rod is extended out by the elastic force of the spring; or,
the feedback contact is connected when the arresting rod moves towards the bottom end and compresses the spring, and is disconnected when the arresting rod is extended out by the elastic force of the spring.
The elevator rope clamping device can clamp the steel wire rope only when the elevator is powered off and the brake of the elevator completely stops the elevator car, and the steel wire rope is static, so that the steel wire rope and the rope pressing plate cannot be abraded, the safety tongs linked with the steel wire rope cannot be accidentally triggered to act, and the maintenance cost of the elevator in use is reduced.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the present invention are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of an embodiment of an elevator rope clamp of the present invention in a normal state;
fig. 2 is a schematic view of an embodiment of the rope clamp of the elevator of the present invention at the time of delayed action;
fig. 3 is a schematic view of an embodiment of the rope clamp of the elevator of the present invention after a delay operation.
The reference numerals in the figures are illustrated as follows:
1 is a rope pressing plate; 2 is a drive rod; 21 is a drive rod segment; 22 is a transition section; 23 is the drive shaft thick section; 3 is a arresting bar; 31 is a roller for stopping the top end of the barrier rod; 4 is an electromagnetic coil; 5 is a spring; 6 is a feedback contact; 7 is a steel wire rope; 8 is a tubular stent; 81 is an accommodating hole groove at the front end of the tubular bracket; 811 is a slot that receives the front end of the bore slot.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1, 2 and 3, the elevator rope gripper comprises: the rope pressing plate 1, the driving rod 2, the arresting rod 3, the electromagnetic coil 4 and the spring 5;
the driving rod 2 comprises a thin section 21, a transition section 22 and a thick section 23 which are coaxially and fixedly connected together from front to back in sequence;
the thin section 21 and the thick section 23 are both cylindrical; the outer diameter of the thin section 21 is smaller than that of the thick section 23;
the outer diameter of the transition section 22 is gradually increased from front to back;
the rope pressing plate 1 is fixed at the front end of the thin section 21;
the arresting rod 3 and the driving rod 2 are arranged in an orthogonal direction, and the bottom of the arresting rod 3 abuts against the spring 5; when the rope clamping action of the elevator rope clamp is not triggered, the arresting rod 3 is positioned at the thin section 21 of the driving rod 2, as shown in fig. 1, and after the rope clamping action of the elevator rope clamp is triggered, the arresting rod 3 is positioned at the thick section 23 of the driving rod 2, as shown in fig. 3;
the electromagnetic coil 4 is fixedly sleeved outside the barrier rod 3;
when the elevator is electrified, the electromagnetic coil 4 is electrified to generate electromagnetic force to enable the arresting rod 3 to move towards the bottom and compress the spring 5, the top end of the arresting rod 3 is far away from the axis of the driving rod 2, and the distance from the top end of the arresting rod 3 to the axis of the driving rod 2 is greater than or equal to R3，R3Is the radius of the thick section 23.
When the elevator is powered off, the electromagnetic coil 4 is powered off to generate no electromagnetic force, the elastic force of the spring 5 enables the arresting rod 3 to extend out to be close to the axis of the driving rod 2, and the distance from the top end of the arresting rod 3 to the axis of the driving rod 2 is more than or equal to R when the arresting rod is completely extended out1And is not more than (R)1+R3)/2，R1Is the radius of the thin section 21.
Preferably, the thin section (21) and the thick section (23) are both cylindrical.
According to the elevator rope gripper disclosed by the embodiment I, when an elevator is normally powered on, the arresting rod 3 compresses the spring 5 under the action of the electromagnetic coil 4 and is in a completely retracted state, the top end of the arresting rod 3 is separated from the driving rod 2, the driving rod 2 does not have any obstruction in the axial movement direction of the driving rod, the rope pressing plate 1 is a part which contacts and fastens a steel wire rope after the rope gripper acts and is pushed by the driving rod 2, and once the rope gripper acts, the driving rod 2 can drive the rope pressing plate 1 to move forwards to clamp the steel wire rope without delay. However, when the elevator is powered off, because the electromagnetic coil 4 is powered off and does not generate electromagnetic force, the elastic force of the compressed spring 5 enables the blocking rod 3 to rapidly protrude out of the position close to the thin section 21 of the driving rod 2, and the blocking rod 3 is in a release state and appears on a path where the inclined surface of the transition section 22 of the driving rod 2 advances. When the inclined surface of the transition section 22 contacts the top end of the arresting bar 3, the resistance provided by the arresting bar 3 delays the forward movement of the driving rod 2 but does not stop it completely, and the inclined surface of the transition section 22 gradually pushes away the arresting bar 3 while the driving rod 2 slowly advances under the obstruction of the arresting bar 3, as shown in fig. 2. When the top end of the arresting rod 3 leaves the inclined surface of the transition section 22, the arresting to the driving rod 2 disappears, and the pressure of the rope pressing plate 1 on the steel wire rope is not weakened. When the rope clamping action of the elevator is finished by triggering the rope clamping device, the rope pressing plate 1 presses the steel wire rope, and the stopping rod 3 is positioned at the thick section 23 of the driving rod 2 and cannot stay on the inclined surface of the transition section 22 of the driving rod 2.
The elevator rope clamping device of the first embodiment can clamp the steel wire rope only after the elevator brake completely stops the elevator car because the steel wire rope is static, so that the steel wire rope and the rope pressing plate cannot be abraded, the safety tongs linked with the steel wire rope cannot be accidentally triggered to act, and the maintenance cost of the elevator in use is reduced.
Example two
Based on the elevator rope gripper of the first embodiment, the top end of the arresting rod 3 is provided with a roller 31;
when the elevator is electrified, the electromagnetic coil 4 is electrified to generate electromagnetic force to enable the arresting rod 3 to move towards the bottom end and compress the spring 5, the roller 31 at the top end of the arresting rod 3 is far away from the axis of the driving rod 2, and the distance from the roller 31 at the top end of the arresting rod 3 to the axis of the driving rod 2 is greater than or equal to R3；
When the elevator is powered off, the electromagnetic coil 4 is powered off to generate no electromagnetic force, the elastic force of the spring 5 enables the arresting rod 3 to protrude out to be close to the axis of the driving rod 2, and the distance from the roller 31 to the axis of the driving rod 2 when the arresting rod is completely protruded out is larger than or equal to R1And is not more than (R)1+R3)/2。
In the rope clamp for the elevator of the second embodiment, when the arresting bar 3 is in the releasing state, the inclined surface of the transition section 22 of the moving driving rod 2 contacts the roller 31, and the roller 31 drives the arresting bar 3 to move towards the direction of the retracting state. The rollers 31 arranged at the top ends of the arresting rods 3 can provide soft resistance to delay the forward movement of the driving rods 2.
EXAMPLE III
Based on the first embodiment, the elevator rope gripper further comprises a feedback contact 6;
the feedback contact 6 is rigidly connected to the blocking rod 3.
The feedback contact 6 is turned off when the arresting rod 3 moves to the bottom end and compresses the spring 5, and is turned on when the arresting rod 3 is extended out by the elastic force of the spring 5; or,
the feedback contact 6 is turned on when the stopper rod 3 moves toward the bottom end and compresses the spring 5, and is turned off when the stopper rod 3 is protruded by the elastic force of the spring 5.
In the elevator rope clamping device of the third embodiment, the feedback contact 6 is in an off state or an on state when the elevator is powered on or powered off, and the elevator can judge the fault of the rope clamping device.
Example four
Based on the third embodiment, the elevator rope clamping device further comprises a tubular support 8;
the driving rod 2 is arranged inside the tubular bracket 8;
a plurality of accommodating hole grooves 81 are formed in the front end of the tubular support 8 along the circumferential direction;
the spring 5 is placed at the bottom of the accommodating hole groove 81, the bottom of the arresting bar 3 is placed in the accommodating hole groove 81 and abutted against the spring 5, and the electromagnetic coil 4 is fixedly arranged at an opening at the top of the accommodating hole groove 81 and sleeved outside the arresting bar 3.
Preferably, there are a plurality of said bars 3, such as 2, 3 or 4.
Preferably, the front end of the receiving hole 81 is provided with a slot 811, and the feedback contact 6 is rigidly connected to the blocking bar 3 by a rigid connection member passing through the slot 811.
Preferably, the front end surface of the rope pressing plate 1 is provided with a V-shaped or U-shaped groove. The front end face of the rope pressing plate 1 is provided with a V-shaped or U-shaped groove, so that the steel wire rope 7 can be clamped conveniently.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An elevator rope gripper is characterized by comprising a rope pressing plate (1), a driving rod (2), a blocking rod (3), an electromagnetic coil (4) and a spring (5);
the driving rod (2) comprises a thin section (21), a transition section (22) and a thick section (23) which are coaxially and fixedly connected together from front to back in sequence;
the thin section (21) and the thick section (23) are both cylindrical; the outer diameter of the thin section (21) is smaller than that of the thick section (23);
the outer diameter of the transition section (22) is gradually increased from front to back;
the rope pressing plate (1) is fixed at the front end of the thin section (21);
the arresting rod (3) and the driving rod (2) are arranged in an orthogonal direction, and the bottom end of the arresting rod abuts against the spring (5); when the elevator rope clamping device does not trigger the rope clamping action, the blocking rod (3) is positioned at the thin section (21) of the driving rod (2), and after the elevator rope clamping device triggers the rope clamping action, the blocking rod (3) is positioned at the thick section (23) of the driving rod (2);
the electromagnetic coil (4) is fixedly sleeved outside the blocking rod (3);
when the elevator is electrified, the electromagnetic coil (4) is electrified to generate electromagnetic force to enable the arresting rod (3) to move towards the bottom end and compress the spring (5), the top end of the arresting rod (3) is far away from the axis of the driving rod (2), and the distance from the top end of the arresting rod (3) to the axis of the driving rod (2) is greater than or equal to R3，R3Is the radius of the thick section (23);
when the elevator is powered off, the electromagnetic coil (4) is powered off and does not generate electromagnetic force, the elastic force of the spring (5) enables the blocking rod (3) to extend out to be close to the axis of the driving rod (2), and the distance from the top end of the blocking rod (3) to the axis of the driving rod (2) is more than or equal to R when the blocking rod (3) completely extends out1And is not more than (R)1+R3)/2，R1Is the radius of the thin section (21).
2. Elevator rope gripper according to claim 1,
the top of the barrier rod (3) is provided with a roller (31);
when the elevator is electrified, the electromagnetic coil (4) is electrified to generate electromagnetic force to enable the arresting rod (3) to move towards the bottom end and compress the spring (5), the roller (31) at the top end of the arresting rod (3) is far away from the axis of the driving rod (2), and the distance from the roller (31) at the top end of the arresting rod (3) to the axis of the driving rod (2) is greater than or equal to R3；
When the elevator is powered off, the electromagnetic coil (4) is powered off and does not generate electromagnetic force, the elastic force of the spring (5) enables the blocking rod (3) to extend out to be close to the axis of the driving rod (2), and the distance from the roller (31) at the top end of the blocking rod (3) to the axis of the driving rod (2) is more than or equal to R when the blocking rod (3) completely extends out1And is not more than (R)1+R3)/2。
3. Elevator rope gripper according to claim 1,
the elevator rope clamping device also comprises a feedback contact (6);
the feedback contact (6) is rigidly connected with the arresting rod (3).
4. The elevator rope gripper of claim 3,
the elevator rope gripper also comprises a tubular bracket (8);
the driving rod (2) is arranged inside the tubular bracket (8);
one or more accommodating hole grooves (81) are formed in the front end of the tubular support (8) along the circumferential direction;
the spring (5) is placed at the bottom of the accommodating hole groove (81), the bottom of the blocking rod (3) is placed in the accommodating hole groove (81) and abutted against the spring (5), and the electromagnetic coil (4) is fixedly arranged at the top opening of the accommodating hole groove (81) and sleeved outside the blocking rod (3).
5. Elevator rope gripper according to claim 1,
the arresting bar (3) is provided with a plurality of bars.
6. Elevator rope gripper according to claim 1,
the number of the arresting bars (3) is 2, 3 or 4.
7. Elevator rope gripper according to claim 4,
the front end of the accommodating hole groove (81) is provided with a groove (811), and the feedback contact (6) is rigidly connected with the blocking rod (3) through a rigid connecting piece penetrating through the groove (811).
8. The elevator rope gripper of claim 3,
the front end face of the rope pressing plate (1) is provided with a V-shaped or U-shaped groove.
9. Elevator rope gripper according to claim 1,
the thin section (21) and the thick section (23) are both cylindrical.
10. The elevator rope gripper of claim 3,
the feedback contact (6) is disconnected when the arresting rod (3) moves towards the bottom end and compresses the spring (5), and is connected when the arresting rod (3) is extended out by the elastic force of the spring (5); or,
the feedback contact (6) is connected when the arresting rod (3) moves towards the bottom end and compresses the spring (5), and is disconnected when the arresting rod (3) is extended out by the elastic force of the spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856554.0A CN107867616B (en) | 2016-09-27 | 2016-09-27 | Elevator rope gripper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856554.0A CN107867616B (en) | 2016-09-27 | 2016-09-27 | Elevator rope gripper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107867616A CN107867616A (en) | 2018-04-03 |
| CN107867616B true CN107867616B (en) | 2019-04-02 |
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ID=61752231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610856554.0A Active CN107867616B (en) | 2016-09-27 | 2016-09-27 | Elevator rope gripper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107867616B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115465748A (en) * | 2021-06-10 | 2022-12-13 | 奥的斯电梯公司 | Safety device for an elevator system and elevator system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000078660A1 (en) * | 1999-06-19 | 2000-12-28 | Kisan Information System Corp. | Emergency rope brake device for elevator systems |
| KR200221450Y1 (en) * | 2000-10-21 | 2001-04-16 | 편준기 | Brake system for rope of a elevator |
| CN2782636Y (en) * | 2004-10-29 | 2006-05-24 | 河北东方机械厂 | Steel cable clamp |
| CN104326326B (en) * | 2014-10-14 | 2016-08-17 | 杭州沪宁电梯部件股份有限公司 | A kind of automatically reset steel wire braking |
| CN106044455B (en) * | 2016-08-05 | 2017-09-26 | 石家庄五龙制动器股份有限公司 | Compact rope brake |
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2016
- 2016-09-27 CN CN201610856554.0A patent/CN107867616B/en active Active
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| CN107867616A (en) | 2018-04-03 |
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