CN111994754A - Elevator braking device capable of being synchronously lifted and elevator - Google Patents
Elevator braking device capable of being synchronously lifted and elevator Download PDFInfo
- Publication number
- CN111994754A CN111994754A CN202010998369.1A CN202010998369A CN111994754A CN 111994754 A CN111994754 A CN 111994754A CN 202010998369 A CN202010998369 A CN 202010998369A CN 111994754 A CN111994754 A CN 111994754A
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- CN
- China
- Prior art keywords
- lifting
- synchronous
- rod
- elevator
- clamp body
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Classifications
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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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- 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
- B66B5/28—Buffer-stops for cars, cages, or skips
- B66B5/284—Buffer-stops for cars, cages, or skips mounted on cars or counterweights
Abstract
The invention discloses an elevator braking device capable of being synchronously lifted, which comprises: the clamp body assembly comprises two clamp body units, and each clamp body unit comprises a wedge block set used for clamping an elevator guide rail; the number of the wedges of the wedge block group is two; the lifting mechanism is used for lifting the wedge block to enable the clamp body assembly to act; the synchronous mechanism is used for connecting the two clamp body units so as to enable the two clamp body units to synchronously act; and the connection point of the lifting synchronous assembly fixedly connected with the synchronous mechanism and the lifting mechanism is positioned between two wedges of the wedge block group. The invention installs the synchronizing bar in the middle of the safety tongs body, and can be used for the elevator arrangement structure with the car bottom wheel inclined. The lifting rod is integrated, so that the effect of lifting a wedge block in the traditional safety gear can be performed, and meanwhile, the synchronous rod can be connected, and the effects of triggering the safety gear to act and synchronizing the safety gears on two sides to act are achieved.
Description
Technical Field
The invention relates to the field of elevators, in particular to an elevator braking device capable of being synchronously lifted and an elevator.
Background
The safety tongs are a safety protection device of an elevator, and the safety tongs stop the air intake of a car and clamp the car on a guide rail under the operation of a speed limiter when the elevator exceeds the set limit speed of the speed limiter of the elevator or in the case of breakage and looseness of a suspension rope. It provides effective protection for the safe operation of the elevator.
In the existing double-pulling safety tongs adopting a U-shaped spring as an elastic element, a pulling wedge block mechanism and a synchronizing mechanism are both arranged on the outer side or the upper part of a tong body assembly. This approach has the following problems: 1) the structure is complex, and the cost is high; 2) the lifting synchronous mechanism device is arranged on the upper part of the clamp body assembly, the whole height is increased, and the pit depth of elevator installation is greatly influenced; 3) the lifting mechanism is arranged on the outer side of the clamp body assembly, and the safety clamp mode cannot be installed for an elevator arrangement mode with a car bottom wheel arranged obliquely.
Disclosure of Invention
The invention aims to provide a braking device which is simple in structure and convenient to install.
In order to solve the above technical problem, the present invention provides an elevator braking device capable of synchronously lifting, including:
the clamp body assembly comprises two clamp body units, and each clamp body unit comprises a wedge block set used for clamping an elevator guide rail; the number of the wedges of the wedge block group is two;
the lifting mechanism is used for lifting the wedge block to enable the clamp body assembly to act;
the synchronous mechanism is used for connecting the two clamp body units so as to enable the two clamp body units to synchronously act; and the connection point of the lifting synchronous assembly fixedly connected with the synchronous mechanism and the lifting mechanism is positioned between two wedges of the wedge block group.
Further, the lifting mechanism includes a lifting rod, the lifting rod includes:
the lifting rod driving end is fixedly connected with the rotating shaft and used for driving the lifting rod to rotate;
the lifting rod lifting end is used for lifting the wedge block group;
the synchronous end of the lifting rod is fixedly connected with the synchronous mechanism.
Furthermore, a waist hole is arranged on the lifting end of the lifting rod and is connected with the wedge block group through a pin shaft.
Further, setting the maximum upward travel of the wedge block as H, the distance between the pin shaft at the initial position and the center of the lifting rod as a, and the initial angle between the wedge block and the lifting rod as β, so that when the safety gear operates the wedge block to the uppermost end, the calculation formula of the distance b between the pin shaft at the bottom of the wedge block and the center of the lifting rod is as follows:
further, the length of the waist hole L is larger than the difference between a and b.
Further, the pulling synchronous connection point is positioned on a vertical surface of a horizontal connection line between the two wedges.
Further, the synchronization mechanism includes:
the synchronous rod is provided with a synchronous rod synchronous end and a synchronous rod connecting end, and the synchronous rod synchronous end is fixedly connected with the lifting rod synchronous end;
the middle adjusting rod, the synchronizing bar connecting end is connected with the adjusting rod.
Furthermore, the synchronous end of the synchronous rod is fixedly connected with the synchronous end of the lifting rod through a pin shaft and a cotter pin.
The invention also discloses an elevator using the elevator braking device capable of being synchronously lifted, which comprises the following components:
the lower part of the elevator car bottom wheel frame is provided with a buffer collision seat;
the synchronizing mechanism penetrates through a gap in the middle of the buffer collision seat to be installed.
The invention achieves the following technical effects:
1. the installation frame of the lifting mechanism is cancelled, so that the cost is greatly reduced compared with the prior art;
2. the structure is simple, the clamp body assembly and the lifting mechanism are integrated to design the mounting structure, the height of the whole safety clamp is reduced, and the pit depth of elevator installation is reduced;
3. the synchronous rod is arranged in the middle of the safety tongs body and can correspond to an elevator arrangement structure with the car bottom wheel obliquely arranged. The lifting rod is integrated, so that the effect of lifting a wedge block in the traditional safety gear can be performed, and meanwhile, the synchronous rod can be connected, and the effects of triggering the safety gear to act and synchronizing the safety gears on two sides to act are achieved.
Drawings
Fig. 1 is an overall schematic view of an elevator braking apparatus capable of synchronous lifting according to the present invention.
Fig. 2 is a schematic view of a first lifting rod 31 of the elevator braking device capable of synchronously lifting according to the present invention.
FIG. 3 is a schematic view of the second lifting rod 32 of the elevator braking device capable of synchronously lifting according to the present invention
FIG. 4 is a schematic diagram of the calculation of the lifting rod of the elevator braking device capable of synchronously lifting according to the present invention
Fig. 5 is a schematic view showing the installation of the elevator braking apparatus capable of synchronous lifting according to the present invention.
Description of the reference numerals
A safety clamp assembly 1 clamp body frame
2 the pincer body component 3 is lifted and pulled the organization
31 first lifting rod 32 second lifting rod
4 synchronizing mechanism 41 first synchronizing bar
42 second synchronous rod 5 middle adjusting rod
6 linkage shaft 7 leading-up rod
8 lifting rod pin shaft and 9 synchronizing rod pin shaft
10 cotter pin 11 guide rail
12 obliquely-arranged car bottom wheel 13 buffer collision seat
14 fixing bolt 31a lifting rod waist hole
31b synchronous rod pin shaft hole 31c connecting hole of lifting rod and linkage shaft
Distance between pin shaft at initial position of L waist hole length a and center of lifting rod
Initial angle of H wedge block moving upwards by maximum stroke beta wedge block and lifting rod
b distance between bottom pin shaft of wedge block and center of lifting rod
Detailed Description
The invention discloses an elevator braking device capable of being synchronously pulled, and is shown in figure 1, which is a schematic diagram of a safety gear component A capable of being synchronously pulled, and comprises a gear component 2, a pulling mechanism 3 and a synchronizing mechanism 4.
The clamp body assembly 2 comprises two clamp body units, and each clamp body unit comprises a wedge block set used for clamping an elevator guide rail; the number of the wedges of the wedge block group is two.
The lifting mechanism 3 is used for lifting the wedge block to enable the clamp body assembly to act;
the synchronous mechanism 4 is used for connecting the two clamp body units so as to enable the two clamp body units to synchronously act; and the connection point of the lifting synchronous assembly fixedly connected with the synchronous mechanism and the lifting mechanism is positioned between two wedges of the wedge block group.
Specifically, examples are as follows:
referring to fig. 1, a caliper body assembly 2 is mounted in a caliper body frame 1.
The lifting mechanism 3 is composed of a first lifting rod 31 and a second lifting rod 32, and is respectively arranged on the safety tongs on the left side and the right side. Taking the first lifting rod 31 as an example, it has a rotary lifting rod driving end fixed to the rotating shaft for driving the lifting rod, a lifting rod lifting end for lifting the wedge block set, and a lifting rod synchronizing end fixed to the synchronizing mechanism 4. Similarly, the second lifting rod 32 has the same structure, but the only difference is that the lifting rod synchronous end of the first lifting rod 31 is arranged above the lifting rod driving end, as shown in fig. 2; the lift link synchronizing end of the second lift link 32 is disposed below the lift link drive end, as shown in fig. 3. Further, the wedge block in the caliper body assembly is fixed through the pin 8 and the first lifting rod 31 or the second lifting rod 32, and the pin 8 can move in the waist hole 31a of the first lifting rod 31 or the second lifting rod 32.
The core of the design is that the lifting rod structure can lift a wedge block through the assembly of the waist hole 31a and the pin shaft 8, so that the safety gear acts; and can be connected with the synchronous rod through the pin shaft hole 31b to drive the safety gear on the other side to act.
More specifically, with respect to the design of the waist hole of the lifting rod 31a, refer to fig. 4, which shows a calculation chart for designing the lifting rod. The maximum stroke that the voussoir upwards moved in the action of safety tongs is H, and initial position round pin axle 8 is a with the distance (initial arm length) at lifting rod center, and the voussoir is beta with the initial angle of lifting rod, so when safety tongs action voussoir moved to the top, the distance b at voussoir bottom round pin axle and lifting rod center should satisfy this moment:
the length L of the waist hole should be greater than the difference between a and b, i.e. the pin 8 will not interfere with the waist hole during the wedge action.
The first lifting rod 31 or the second lifting rod 32 is arranged on the linkage shaft 6 through the fixing bolt 14. Preferably, the installation is such that the lifting bar is centrally located within the caliper body assembly 2.
The upper guide rod 7 is fixed on the linkage shaft 6 through a bolt. The first synchronizing bar 41, the second synchronizing bar 42 and the intermediate adjusting bar 5 constitute the synchronizing mechanism 4, wherein the screw thread at the connection of the first synchronizing bar 41 and the intermediate adjusting bar 5 is a right-hand screw thread, and the screw thread at the connection of the second synchronizing bar 42 and the intermediate adjusting bar 5 is a left-hand screw thread. The synchronous rod structure is fixedly connected with the first lifting rod 31 and the second lifting rod 32 through the pin shaft 9 and the cotter pin 10.
When the upper rod 7 rotates anticlockwise, the lifting rod driving end of the second lifting rod 32 drives the second lifting rod 32 to rotate anticlockwise, so that the lifting end of the lifting rod moves upwards to jack up the wedge block group upwards, and the two wedge blocks of the wedge block group clamp the guide rail to brake the guide rail. Meanwhile, the lifting rod synchronous end of the second lifting rod 32 moves downwards, the second synchronous rod 42 is pulled by the lifting rod synchronous end of the second lifting rod 32, similarly, the first synchronous rod 41 is pulled by the second synchronous rod 42, and the first synchronous rod 41 drives the lifting rod synchronous end of the first lifting rod 31 to move outwards, so that the first lifting rod 31 rotates clockwise, the lifting rod lifting end moves upwards, and the wedge block group on the side is jacked up.
Meanwhile, it is conceivable that the lifting end of the lifting rod is further connected with a tension spring (not shown in the figure), the lower end of the tension spring is connected with the lifting end of the lifting rod, the upper end of the tension spring is connected with the wedge block on the same side, and the tension spring plays a role in pulling back the wedge block to reset the mechanism when the lifting rod moves downwards. In addition, a torsion spring (not shown in the figure) is sleeved outside the linkage shaft 6, one end of the torsion spring is fixed on the linkage shaft 6, and the other end of the torsion spring is fixed on the inner wall of a side plate of the safety gear, so that a pre-installation initial torque can be provided for the rotating shaft, and more importantly, the rotating shaft can be automatically reset after the lifting mechanism acts.
The design cancels a lifting and synchronizing mechanism frame assembly, the lifting rod is designed into a structure which can lift a wedge block and can be linked with a synchronizing rod to act, and the lifting rod and the synchronizing rod are arranged at the central part of the clamp body assembly, so that the elevator structure with the car bottom wheel inclined can be met.
More specifically, the synchronization mechanism composed of the synchronization rod 41, the synchronization rod 42 and the intermediate adjusting rod 5 is debugged in a workshop synchronously, and is disassembled and fixed after debugging is finished, and then is installed in the process of installing the safety gear on site, so that the trouble of adjusting the synchronization of the safety gear on site is avoided.
Example two
On the basis of the first embodiment, fig. 5 shows an installation form of the elevator braking device capable of synchronously lifting and pulling, which is applied to an elevator with the bottom wheels arranged obliquely. The safety gear A is fixed on the guide rail 11 through self-locking, and the synchronizing bar structure is installed through penetrating through a gap in the middle of a buffer collision seat 13 arranged at the lower part of the car bottom wheel frame 12. The proposal utilizes the space between the diversion sheave frame 12 and the guide rail 11 to the utmost extent, and greatly reduces the depth of the elevator installation pit.
Claims (9)
1. An elevator braking apparatus capable of synchronous lifting, comprising:
the clamp body assembly comprises two clamp body units, and each clamp body unit comprises a wedge block set used for clamping an elevator guide rail; the number of the wedges of the wedge block group is two;
the lifting mechanism is used for lifting the wedge block to enable the clamp body assembly to act;
the synchronous mechanism is used for connecting the two clamp body units so as to enable the two clamp body units to synchronously act; and the connection point of the lifting synchronous assembly fixedly connected with the synchronous mechanism and the lifting mechanism is positioned between two wedges of the wedge block group.
2. The synchronously pullable elevator braking apparatus of claim 1, wherein the pullup mechanism comprises a pullup rod comprising:
the lifting rod driving end is fixedly connected with the rotating shaft and used for driving the lifting rod to rotate;
the lifting rod lifting end is used for lifting the wedge block group;
the synchronous end of the lifting rod is fixedly connected with the synchronous mechanism.
3. The elevator braking apparatus capable of synchronously lifting as set forth in claim 2, wherein a waist hole is provided at the lifting end of the lifting rod, and the wedge blocks are connected by a pin.
4. The elevator braking apparatus according to claim 3, wherein the maximum upward travel distance of the wedge is set to H, the distance between the pin at the initial position and the center of the lifting rod is a, and the initial angle between the wedge and the lifting rod is β, so that when the safety tongs operating wedge travels to the uppermost end, the distance b between the pin at the bottom of the wedge and the center of the lifting rod is calculated as follows:
5. the synchronously liftable elevator braking apparatus according to claim 4, wherein the length of the waist hole L is greater than the difference between a and b.
6. The synchronously liftable elevator brake apparatus according to claim 1, wherein said lifting synchronization connection point is located on a vertical plane of a horizontal line connecting said two wedges.
7. The synchronously liftable elevator braking apparatus according to claim 2, wherein the synchronizing mechanism comprises:
the synchronous rod is provided with a synchronous rod synchronous end and a synchronous rod connecting end, and the synchronous rod synchronous end is fixedly connected with the lifting rod synchronous end;
the middle adjusting rod, the synchronizing bar connecting end is connected with the adjusting rod.
8. The synchronously liftable elevator brake apparatus according to claim 7, wherein said synchronizing bar synchronizing end is fixedly connected to said lifting bar synchronizing end by a pin and a cotter pin.
9. Elevator using a synchronously liftable elevator braking device according to one of claims 1-8, characterized in that it comprises:
the lower part of the elevator car bottom wheel frame is provided with a buffer collision seat;
the synchronizing mechanism penetrates through a gap in the middle of the buffer collision seat to be installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010998369.1A CN111994754A (en) | 2020-09-21 | 2020-09-21 | Elevator braking device capable of being synchronously lifted and elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010998369.1A CN111994754A (en) | 2020-09-21 | 2020-09-21 | Elevator braking device capable of being synchronously lifted and elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111994754A true CN111994754A (en) | 2020-11-27 |
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ID=73475655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010998369.1A Pending CN111994754A (en) | 2020-09-21 | 2020-09-21 | Elevator braking device capable of being synchronously lifted and elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111994754A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112591573A (en) * | 2020-12-16 | 2021-04-02 | 上海三菱电梯有限公司 | Synchronous adjusting device and method for safety tongs |
-
2020
- 2020-09-21 CN CN202010998369.1A patent/CN111994754A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112591573A (en) * | 2020-12-16 | 2021-04-02 | 上海三菱电梯有限公司 | Synchronous adjusting device and method for safety tongs |
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