CN116119484A - Additional brake - Google Patents
Additional brake Download PDFInfo
- Publication number
- CN116119484A CN116119484A CN202111351035.6A CN202111351035A CN116119484A CN 116119484 A CN116119484 A CN 116119484A CN 202111351035 A CN202111351035 A CN 202111351035A CN 116119484 A CN116119484 A CN 116119484A
- Authority
- CN
- China
- Prior art keywords
- brake
- base
- braking
- shoe
- brake shoe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
- F16D49/16—Brakes with two brake-blocks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/20—Electric or magnetic using electromagnets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to an additional brake, which structurally comprises a base, an electromagnet, a pull rod, a brake spring and a brake shoe, wherein the base is provided with a brake spring; the electromagnet is fixed on the base, the brake shoe is a wedge-shaped body, the top surface of the brake shoe is an oblique cambered surface which is matched with the wheel surface of the brake wheel, and the top surface of the brake shoe is provided with a friction pad; the brake shoes are arranged on the base in a sliding manner; one end of the pull rod is connected with the armature of the electromagnet, and the other end of the pull rod is connected with the brake shoe; the braking spring is sleeved on the pull rod, one end of the braking spring is propped against the braking shoe, and the other end of the braking spring is propped against the electromagnet, so that the braking shoe is propped into a wedge-shaped space between the wheel surface of the braking wheel and the base during braking. The invention has small volume, does not occupy working space of the traction machine and the periphery, is convenient to install, and can be matched with various traction machines for use, thereby meeting the normative requirement of installing the safety brake of the traction machine and improving the use safety of hoisting equipment and elevator equipment.
Description
Technical Field
The invention relates to a safety brake, in particular to an additional brake.
Background
Safety regulations for brakes require that, for hoisting machines used in traction hoisting equipment, an emergency brake acting as a safety precaution is provided in addition to the service brake, so that emergency braking can be implemented once the service brake fails, thereby avoiding the occurrence of safety accidents. Such emergency brakes are also known as safety brakes. Typically, the emergency brake is operated in contact with the elevator guide rail, and in the event of a failure of the service brake of the hoisting machine, the safety brake must stop the elevator car within a predetermined displacement to avoid uncontrolled acceleration of the elevator car.
The existing safety brake is large in occupied space due to structural characteristics, and the situation that the existing safety brake is difficult to install in place often occurs. For a traction machine without a mounting position, the configuration of the safety brake becomes impossible, which is contrary to the safety regulations and presents a corresponding safety hazard.
Disclosure of Invention
The invention aims to provide an additional brake to solve the problem that the existing safety brake is inconvenient to install.
The invention is realized in the following way: an add-on brake comprising:
the base is a platy body and is used for being arranged below the traction machine mechanism so as to form a wedge-shaped space;
the electromagnet comprises a yoke, an armature and a coil, and is fixed on the base;
the brake shoe is a wedge-shaped body, the top surface of the brake shoe is an oblique cambered surface which is matched with the wheel surface of the brake wheel, and a friction liner is arranged on the top surface of the brake shoe; the brake shoes are arranged on the base in a sliding manner;
one end of the pull rod is connected with the armature of the electromagnet, and the other end of the pull rod is connected with the brake shoe; and
and the braking spring is sleeved on the pull rod, one end of the braking spring is propped against the braking shoe, and the other end of the braking spring is propped against the electromagnet, so that the braking shoe is propped into a wedge-shaped space formed between the braking wheel and the base during braking.
The invention also includes:
the limit stop is arranged at the position on the base, which is intersected with the vertical symmetrical center line of the brake wheel.
The invention also includes:
and the plane rolling bearing is arranged between the brake shoe and the base so as to enable the brake shoe to be in sliding fit with the base.
Further, shallow grooves are formed in the surface of the base along the length direction, and the plane rolling bearings are arranged in the shallow grooves; and a limit spring piece is arranged on the edge opening beside the shallow groove and is in press connection with an overhanging convex edge manufactured at the lower part of the side surface of the brake shoe.
Further, one end of the brake shoe is provided with a reducing groove pit, the brake spring is propped against the reducing surface of the groove pit, and the end part of the pull rod is inserted into the bottom of the small-diameter pit of the groove pit.
Further, the insertion end of the pull rod, which is inserted into the brake shoe, is connected with the brake shoe through a connecting pin.
The main body of the invention comprises two parts of an electromagnet and a brake shoe, and can be arranged in a small space between a traction machine base and a brake wheel to form a second set of additional brake except a working brake, and the brake shoe can be jacked into a wedge-shaped space between a wheel surface of the brake wheel and a base during braking, thereby realizing the purpose of rapidly stopping the brake wheel, and further playing the role of preventing the safety brake when the working brake fails. The invention has small volume, does not occupy working space of the traction machine and the periphery, is convenient to install, and can be matched with various traction machines for use, thereby meeting the normative requirement of installing the safety brake of the traction machine and improving the use safety of hoisting equipment and elevator equipment.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged view of fig. 1, A-A, partially in section.
Fig. 3 is a partial enlarged view at B of fig. 1.
In the figure: 1. the brake device comprises a pull rod, 2, a brake spring, 3, a brake shoe, 4, a plane rolling bearing, 5, a limit stop, 6, a yoke, 7, an armature, 8, a coil, 9, a base, 10, a friction pad, 11, a connecting pin, 12, a brake wheel, 13, a traction machine base, 14, a working brake, 15, a limit spring piece, 16, a screw, 17 and an overhanging convex edge.
Detailed Description
As shown in fig. 1, a service brake 14 is normally mounted on a brake drum 12 of a hoisting machine, and the present invention is mounted as an additional brake on a hoisting machine base 13.
As shown in fig. 1, 2 and 3, the invention comprises a base 9, a brake shoe 3, an electromagnet, a pull rod 1, a brake spring 2, a plane rolling bearing 4, a limit stop 5 and the like. The base 9 is a plate-shaped body installed in the middle space of the traction machine base 13 to provide a wedge-shaped space for receiving the brake shoes and forming a brake. The electromagnet comprises a yoke 6, an armature 7 and a coil 8; the electromagnet is fixed on the base 9. The limit stop 5 is fixed on the base 9 at a position intersecting the vertical symmetry center line of the headblock 12. One end of the pull rod 1 is connected with an armature 7 in the electromagnet, and the other end is connected with the brake shoe 3. The brake spring 2 is sleeved on the pull rod 1, one end of the brake spring is propped against the brake shoe 3, and the other end is propped against the yoke 6 in the electromagnet. A clamping groove is formed between the limit stop 5 on the base 9 and the yoke 6 of the electromagnet, the brake shoe 3 slides in the clamping groove in a controlled manner, and is jacked into a wedge-shaped space formed between the brake wheel 12 and the base 9 by the brake spring 2 during braking, so that the brake wheel 12 is braked rapidly.
As shown in fig. 3, the brake shoe 3 is a wedge, the top surface thereof is an inclined arc surface which is matched with the wheel surface of the brake wheel 12, and a friction pad 10 is provided on the top surface of the brake shoe 3. One end of the brake shoe 3 is provided with a reducing groove pit, one end of the brake spring 2 is propped against the reducing surface of the reducing groove pit, and the end part of the pull rod 1 is inserted into the bottom of the reducing groove pit. The connecting pin 11 is inserted into the insertion end of the tie rod 1 and the brake shoe 3 to connect the tie rod 1 and the brake shoe 3 together.
As shown in fig. 2, a shallow slot is formed on the surface of the base 9 along the length direction, and the plane rolling bearing 4 is arranged in the shallow slot to reduce the sliding resistance of the brake shoe in the clamping slot to the greatest extent, so as to realize the purpose of emergency braking. A limit spring piece 15 is fixed on the edge of the side of the shallow groove through a screw 16; an overhanging convex edge 17 is formed at the lower part of two side surfaces of the brake shoe 3. The limit spring piece 15 is pressed against the overhanging lip 17 of the side of the brake shoe from both sides to form an elastic pressing mode, which does not affect the normal sliding of the brake shoe 3. Correspondingly, a second shallow groove which is slightly wider than the plane sliding bearing 4 can be formed on the bottom surface of the brake shoe 3 along the length direction and is clamped on the plane sliding bearing 4 from the upper side, so that the plane sliding bearing can be effectively prevented from being deviated or separated.
The invention has two sets of configurations and is symmetrically arranged below the braking wheel 12 by taking the limit stop 5 as a symmetry, so that an additional brake can implement emergency braking for the braking wheel rotating in the forward direction and the reverse direction, thereby meeting the use requirement.
The working process of the invention is as follows: when the electromagnet is electrified and attracted, the pull rod 1 pulls the brake shoe 3 to be separated from the brake wheel 12 (see a partial enlarged view at C of fig. 1), and simultaneously the brake spring 2 is pressed to be contracted, so that the brake is released. The brake on the left side below in fig. 1 is in an open state. After the power is off, the armature 7 of the electromagnet is released, the brake shoe 3 slides to the lower part of the brake wheel 12 under the pushing action of the brake spring 2, friction force is generated between the rotating brake wheel 12 and the friction pad 10 on the brake shoe 3, and under the action of the friction force, the brake shoe 3 is further embedded into the wedge-shaped space, so that the brake wheel 12 is quickly pushed and stopped, and therefore, the brake wheel 12 can be quickly braked in emergency under the condition that a working brake fails. The brake on the right side below in fig. 1 is in the upper brake state.
Claims (6)
1. An add-on brake, comprising:
the base is a platy body and is used for being arranged below the traction machine mechanism so as to form a wedge-shaped space;
the electromagnet comprises a yoke, an armature and a coil, and is fixed on the base;
the brake shoe is a wedge-shaped body, the top surface of the brake shoe is an oblique cambered surface which is matched with the wheel surface of the brake wheel, and a friction liner is arranged on the top surface of the brake shoe; the brake shoes are arranged on the base in a sliding manner;
one end of the pull rod is connected with the armature of the electromagnet, and the other end of the pull rod is connected with the brake shoe; and
and the braking spring is sleeved on the pull rod, one end of the braking spring is propped against the braking shoe, and the other end of the braking spring is propped against the electromagnet, so that the braking shoe is propped into a wedge-shaped space formed between the braking wheel and the base during braking.
2. An add-on brake as defined in claim 1, further comprising:
the limit stop is arranged at the position on the base, which is intersected with the vertical symmetrical center line of the brake wheel.
3. An add-on brake as defined in claim 1, further comprising:
and the plane rolling bearing is arranged between the brake shoe and the base so as to enable the brake shoe to be in sliding fit with the base.
4. A brake according to claim 3, wherein the surface of the base is provided with a shallow groove in the longitudinal direction, and the planar rolling bearing is disposed in the shallow groove; and a limit spring piece is arranged on the edge opening beside the shallow groove and is in press connection with an overhanging convex edge manufactured at the lower part of the side surface of the brake shoe.
5. A brake according to claim 1, 2 or 3, wherein a reducing groove is formed in one end of the brake shoe, the brake spring is abutted against the reducing surface of the groove, and the end of the pull rod is inserted into the small diameter pit bottom of the groove.
6. A supplemental brake as claimed in claim 1, 2 or 3, wherein the insertion end of the pull rod into which the brake shoe is inserted is connected to the brake shoe by a connecting pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111351035.6A CN116119484A (en) | 2021-11-15 | 2021-11-15 | Additional brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111351035.6A CN116119484A (en) | 2021-11-15 | 2021-11-15 | Additional brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116119484A true CN116119484A (en) | 2023-05-16 |
Family
ID=86306872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111351035.6A Pending CN116119484A (en) | 2021-11-15 | 2021-11-15 | Additional brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116119484A (en) |
-
2021
- 2021-11-15 CN CN202111351035.6A patent/CN116119484A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |