CN112209239B - Crane cart walking emergency safety braking device and method - Google Patents
Crane cart walking emergency safety braking device and method Download PDFInfo
- Publication number
- CN112209239B CN112209239B CN202011178085.4A CN202011178085A CN112209239B CN 112209239 B CN112209239 B CN 112209239B CN 202011178085 A CN202011178085 A CN 202011178085A CN 112209239 B CN112209239 B CN 112209239B
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- CN
- China
- Prior art keywords
- brake
- crane
- distribution cabinet
- power distribution
- gear
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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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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/18—Travelling gear incorporated in or fitted to trolleys or cranes with means for locking trolleys or cranes to runways or tracks to prevent inadvertent movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
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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
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
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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
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
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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
- F16D2121/24—Electric or magnetic using motors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention discloses a crane cart traveling emergency safety braking device, which comprises: the electric power generation device comprises a power distribution cabinet for carrying out variable frequency adjustment on a motor of a pusher of a first brake, a second brake and a manual controller electrically connected to the power distribution cabinet, wherein: the first brake and the second brake are used for controlling the braking condition of the crane; the manual controller is used for: when the gear of the crane is in a driving gear, the motor of the second brake is regulated through the power distribution cabinet by an operation signal aiming at the manual controller from a user, so that the braking condition of the crane is adjustable; the manual controller is unable to control the second brake when the gear of the crane is in a park gear. The crane cart walking emergency safety braking device can avoid reducing potential safety hazards.
Description
Technical Field
The invention relates to the field of safety management of cranes, in particular to a crane cart traveling emergency safety braking device and method.
Background
At present, an electromagnetic or electrohydraulic control system and matched equipment are often selected for a general crane cart traveling control system to realize braking and positioning of a crane traveling position, and the working principle is that a mechanical brake is driven by the suction force of an electromagnetic coil or a mechanical brake crane traveling driving shaft is driven by an electrohydraulic pusher to realize the parking function of the crane. Because the electromagnetic suction force or the output thrust of the electrohydraulic pusher cannot be continuously adjusted (0 or 1), the braking moment applied to the traveling driving shaft of the crane by the braking device is unchanged during braking, and the adjustable and variable braking moment cannot be realized, so that great vibration can be generated during parking, and the device is particularly obvious during lifting and carrying large-tonnage heavy objects.
The hot feeding of a hoist or the hoisting feeding of the hoist is mainly adopted for the feeding of the heating furnace of the steel mill, and the following potential safety hazards exist in the actual hoisting feeding process.
Phenomenon one: in the same operation span design, a plurality of cranes are selected for operation in different areas and are mutually standby, but in order to realize rapid and accurate positioning and stopping of the cranes in actual operation, the operation time of unit products is reduced, the operation efficiency is improved, the cranes are always controlled in advance by using reverse driving (commonly called as driving back) to lift the weights during operation, so that positioning and stopping are realized (namely, braking force generated by rotating the direction of a crane travelling driving motor is used for braking and positioning during forward travelling of the cranes), the operation mode similar to emergency braking and braking artificially increases the damage of an electric control and braking machine of a crane travelling braking system, and the emergency braking mode is always adopted to greatly influence the overall service life and the safety of the cranes like the emergency braking system of a truck.
Phenomenon II: when the same operation is carried out across the subareas, the forced requirement that the crane in the overhaul area can be overhauled only after the power supply of the contact line is stopped is adopted, and the requirement causes the condition that the crane in the operation section slides into the overhaul section (the scribing is in a non-power supply state) when the crane in the operation section is adjacent to the overhaul section. The untimely crane is impacted on the crane in the overhauling state, so that equipment in the overhauling state is damaged or personal casualties are caused.
Phenomenon III: in the feeding operation process of the crane, the crane suddenly jumps or the scribing suddenly fails, and as the band-type brake of the crane is excessively loosened (manually adjusted), the power failure cannot be used for braking the reverse car, so that the crane slides to strike the adjacent crane or other structures, and equipment damage or personal injury and death safety accidents are caused.
Disclosure of Invention
The invention aims to provide a crane cart traveling emergency safety braking device, which can avoid reducing potential safety hazards.
In order to achieve the above object, the present invention provides a crane cart travel emergency safety brake device including: the electric power distribution cabinet that first stopper, second stopper, right the impeller accommodate motor of second stopper carries out variable frequency regulation and electric connection in the manual controller of switch board, wherein: the first brake and the second brake are used for controlling the braking condition of the crane; the manual controller is used for: when the gear of the crane is in a driving gear, the motor of the second brake is regulated through the power distribution cabinet by an operation signal aiming at the manual controller from a user, so that the braking condition of the crane is adjustable; the manual controller is unable to control the second brake when the gear of the crane is in a park gear.
Preferably, the power distribution cabinet is used for realizing variable frequency adjustment of the motor of the second brake through electric energy provided by the emergency power supply when the power grid is in power failure.
Preferably, the second brake is used for sensing the wear information of the brake pad, and sending feedback information to the distribution box when the brake pad wear information shows that the thickness of the brake pad is smaller than a preset thickness threshold value.
Preferably, the distribution box is used for receiving the feedback information and sending out prompt information for adjusting or replacing the brake pad.
Preferably, the manual controller includes: a manual mechanical tie rod responsive to manual operation of the user and converting the manual operation into an electrical signal input, wherein the input is further electrically connected to the power distribution cabinet to send the electrical signal to the power distribution cabinet, wherein the electrical signal is reflective of the magnitude of the manual operation and the braking stroke of the second brake is associated with the magnitude of the manual operation.
Preferably, the first brake is configured as a foot operated or a hand operated brake.
In addition, the invention also provides a crane cart traveling emergency safety braking method, which uses the crane cart traveling emergency safety braking device, wherein the crane cart traveling emergency safety braking method comprises the following steps: when the gear of the crane is in a driving gear, the motor of the second brake is regulated through the power distribution cabinet by an operation signal aiming at the manual controller from a user, so that the braking condition of the crane is adjustable; when the gear of the crane is in a parking gear, the manual controller cannot control the second brake; and when the power grid is powered off, the power distribution cabinet realizes variable frequency adjustment of the motor of the second brake through electric energy provided by the emergency power supply.
According to the technical scheme, the manual controller adopted by the invention is different from a controller in a pedal operation mode, is different from an electric control master device which is operated manually and is used for traveling of a general crane cart, can realize double protection in a double-brake control mode, and can realize the starting and stopping functions of the crane more quickly and efficiently in a manual control mode. In addition, the braking device can realize single-action and linkage adjustment, and can realize emergency impact-free braking by matching with the adjustment.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the description serve to explain, without limitation, the invention. In the drawings:
fig. 1 is a schematic view illustrating the construction of a second brake of the present invention;
FIG. 2 is a schematic diagram illustrating the construction of a manual controller of the present invention; and
fig. 3 is a block diagram illustrating a crane cart travel emergency safety brake device according to the present invention.
Description of the reference numerals
1. Oil filling port of pusher 2
3. Lever 4 moment adjusting rod
5. Pull rod 6 brake arm
7. Brake shoe 8 bolt
9. Pin shaft 10 left connecting plate
11. Right connecting plate 12 base
13. Manual mechanical pull rod of spring assembly 14
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
In the present invention, unless otherwise indicated, terms such as "upper, lower, left, right" and the like are used merely to denote orientations of the term in a normal use state, or are commonly understood by those skilled in the art, and should not be construed as limiting the term.
The invention provides a crane cart traveling emergency safety braking device, which is an improvement in the prior art under the condition that a first brake exists, and as a plurality of potential safety hazards easily occur when only the first brake exists, as shown in fig. 3, the crane cart traveling emergency safety braking device can comprise: the electric power generation device comprises a power distribution cabinet for carrying out variable frequency adjustment on a motor of a pusher 1 of a first brake, a second brake and a manual controller electrically connected to the power distribution cabinet, wherein: the first brake and the second brake are used for controlling the braking condition of the crane; the manual controller is used for: when the gear of the crane is in a driving gear, the motor of the second brake is regulated through the power distribution cabinet by an operation signal aiming at the manual controller from a user, so that the braking condition of the crane is adjustable; the manual controller is unable to control the second brake when the gear of the crane is in a park gear. The second brake directly responds to the result of manual operation, responds rapidly, and can cope with various conditions, such as a driving gear, a parking gear and the like, different gears adopt different control logics, and the effect of braking rapidly or slowly according to the requirement is achieved.
Preferably, the power distribution cabinet is used for realizing variable frequency adjustment of the motor of the second brake through electric energy provided by the emergency power supply when the power grid is in power failure. The power grid is used for providing voltage for equipment such as the power distribution cabinet, and when the power grid is powered off and all the control cannot realize electric signal transmission, the power-off emergency self-locking function is adopted, and once the power grid is powered off, the crane can be directly locked so as to be unable to move.
Preferably, the second brake is used for sensing the wear information of the brake pad, and sending feedback information to the distribution box when the brake pad wear information shows that the thickness of the brake pad is smaller than a preset thickness threshold value. The wear information can be obtained through a position sensor or an infrared distance sensor, in addition, the wear information can be limited according to the actual operation feeling of a user, when the same operation amplitude is adopted, the friction force is found to be reduced, the brake pad can be considered to be worn, and when the friction force reaches a certain amplitude, the information of the need of replacing the brake pad is determined and sent.
Preferably, the distribution box is used for receiving the feedback information and sending out prompt information for adjusting or replacing the brake pad. The prompt message may be a verbal message of "adjust or replace brake pads".
Preferably, the manual controller may include: a manual mechanical lever 3 responsive to a manual operation of the user and converting the manual operation into an electrical signal input, wherein the input is further electrically connected to the power distribution cabinet for transmitting the electrical signal to the power distribution cabinet, wherein the electrical signal is reflective of the magnitude of the manual operation and the braking stroke of the second brake is associated with the magnitude of the manual operation.
The emergency power-off braking time is in direct proportion to the brake backing distance. The larger the backing distance is, the longer the braking time is; the smaller the fade, the shorter the braking time. Power-off braking time: 3 s.+ -. 1s.
Preferably, the first brake is configured as a foot operated form of brake.
The structure of the second brake is shown in fig. 1, and includes: pusher 1, oil filler port 2, lever 3, moment adjusting rod 4, pull rod 5, brake arm 6, brake shoe 7, bolt 8, round pin axle 9, left link plate 10, right link plate 11, base 12, spring assembly 13. The brake is different from the brake in the prior art in that the brake comprises an upper spring, a right telescopic cylinder and other structures. The original first brake is not removed. The variable force variable frequency second brake is improved into manual brake variable frequency control by foot brake, emergency state control is more convenient and safer, and double insurance is provided. Some lower-level materials only adopt a second form and are hydraulic braking foot brakes, only one braking mode is adopted (hidden danger exists, high-level oil tank brake oil is easy to leak, obvious potential safety hazard) and sudden power failure or power failure cannot store energy, and the form cannot be used for emergency braking according to the required safe distance (normally open type design).
In addition, the invention provides a crane cart traveling emergency safety braking method, which uses the crane cart traveling emergency safety braking device, wherein the crane cart traveling emergency safety braking method comprises the following steps: when the gear of the crane is in a driving gear, the motor of the second brake is regulated through the power distribution cabinet by an operation signal aiming at the manual controller from a user, so that the braking condition of the crane is adjustable; when the gear of the crane is in a parking gear, the manual controller cannot control the second brake; and when the power grid is powered off, the power distribution cabinet realizes variable frequency adjustment of the motor of the second brake through electric energy provided by the emergency power supply.
The invention realizes the instant safety braking of the crane in various states, namely, utilizes the variable-frequency electric hydraulic drum brake (a normally open drum brake driven by variable frequency), is simultaneously provided with the power-off emergency self-locking function, and can realize the stable running and the safety braking of the crane in lifting by controlling the manual switch of the cab. According to the on-site working condition, the foot brake is changed into the hand brake for ensuring the safe work of the driver, the two types of brakes are controlled by the main transmission, the functions are mutually compensated, and the safety risk caused by the power failure of the standby battery when the power is suddenly cut off by only using the variable-frequency variable-force brake is overcome.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (2)
1. The utility model provides a hoist cart travel emergency safety brake device which characterized in that, hoist cart travel emergency safety brake device includes: the electric power generation device comprises a power distribution cabinet for carrying out variable frequency adjustment on a motor of a pusher of a first brake, a second brake and a manual controller electrically connected to the power distribution cabinet, wherein:
the first brake and the second brake are used for controlling the braking condition of the crane;
the manual controller is used for:
when the gear of the crane is in a driving gear, the motor of the second brake is regulated through the power distribution cabinet by an operation signal aiming at the manual controller from a user, so that the braking condition of the crane is adjustable;
when the gear of the crane is in a parking gear, the manual controller cannot control the second brake;
the power distribution cabinet is used for realizing variable frequency adjustment of the motor of the second brake through electric energy provided by the emergency power supply when the power grid is powered off;
the second brake is used for sensing the abrasion information of the brake pad, and sending feedback information to the distribution box when the abrasion information of the brake pad shows that the thickness of the brake pad is smaller than a preset thickness threshold value;
the distribution box is used for receiving the feedback information and sending out prompt information for adjusting or replacing the brake pad;
the manual controller includes: a manual mechanical lever responsive to a manual operation of the user and converting the manual operation into an electrical signal input, wherein the input is further electrically connected to the power distribution cabinet to send the electrical signal to the power distribution cabinet, wherein the electrical signal is reflective of an amplitude of the manual operation and a braking stroke of the second brake is associated with the amplitude of the manual operation;
the first brake is configured as a foot operated or a hand operated brake.
2. A crane cart travel emergency safety braking method, characterized in that the crane cart travel emergency safety braking method uses the crane cart travel emergency safety braking device as claimed in claim 1, wherein the crane cart travel emergency safety braking method comprises:
when the gear of the crane is in a driving gear, the motor of the second brake is regulated through the power distribution cabinet by an operation signal aiming at the manual controller from a user, so that the braking condition of the crane is adjustable;
when the gear of the crane is in a parking gear, the manual controller cannot control the second brake; and
when the power grid is powered off, the power distribution cabinet realizes variable frequency adjustment of the motor of the second brake through electric energy provided by the emergency power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011178085.4A CN112209239B (en) | 2020-10-29 | 2020-10-29 | Crane cart walking emergency safety braking device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011178085.4A CN112209239B (en) | 2020-10-29 | 2020-10-29 | Crane cart walking emergency safety braking device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112209239A CN112209239A (en) | 2021-01-12 |
| CN112209239B true CN112209239B (en) | 2023-04-28 |
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ID=74057494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011178085.4A Active CN112209239B (en) | 2020-10-29 | 2020-10-29 | Crane cart walking emergency safety braking device and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN112209239B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1317433B1 (en) * | 2000-04-28 | 2003-07-09 | Potain Socita Anonyme | COMMAND CONTROL DEVICE FOR TOWER CRANES |
| US20030117011A1 (en) * | 2001-12-21 | 2003-06-26 | Delphi Technologies Inc. | Trailer brake control in a tow vehicle |
| CN201896897U (en) * | 2010-11-10 | 2011-07-13 | 焦作制动器股份有限公司 | Backlash compensation brake |
| CN102678787B (en) * | 2012-05-31 | 2014-08-06 | 焦作市银星制动器有限公司 | Double-control energy-saving brake |
| CN202785315U (en) * | 2012-08-23 | 2013-03-13 | 上海宝松重型机械工程（集团）有限公司 | Big wheeled crane |
| CN102815619B (en) * | 2012-09-06 | 2014-09-17 | 大连启天自动化控制系统有限公司 | Outage brake buffering protection system for crane |
| CN203214717U (en) * | 2013-04-23 | 2013-09-25 | 焦作市制动器有限公司 | Intelligent brake |
| CN204279398U (en) * | 2014-12-01 | 2015-04-22 | 湖北航天技术研究院特种车辆技术中心 | A kind of tractor truck gas-liquid brake system |
-
2020
- 2020-10-29 CN CN202011178085.4A patent/CN112209239B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112209239A (en) | 2021-01-12 |
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