CN214652914U - Lowering device of hoister - Google Patents
Lowering device of hoister Download PDFInfo
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- CN214652914U CN214652914U CN202023279847.8U CN202023279847U CN214652914U CN 214652914 U CN214652914 U CN 214652914U CN 202023279847 U CN202023279847 U CN 202023279847U CN 214652914 U CN214652914 U CN 214652914U
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- rope
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Abstract
The application discloses device is transferred to lifting machine. In the elevator lowering device, a first cage and a second cage are connected through a rope, the rope is wound on a roller, and the first cage and the second cage are respectively positioned on two sides of the roller, which are arranged in a back-to-back manner; the brake is positioned on the side surface of the roller, and the driving piece is in driving connection with the brake and is used for driving the brake to brake the roller; a speed sensor for measuring the lowering speed of the rope, the speed sensor being mounted on the drum; the controller is used for starting the driving piece when the lowering speed exceeds the preset value, the signal input end of the controller is in communication connection with the signal output end of the speed sensor, and the signal output end of the controller is in communication connection with the signal input end of the driving piece. The application provides a device is transferred to lifting machine can make the cage steadily transfer after lifting machine trouble or extreme condition bring to rest, has improved the security that the cage transferred.
Description
Technical Field
The application relates to the technical field of mine protection, especially, relate to a device is transferred to lifting machine.
Background
The mine hoist is one of fixed designs of mines, undertakes the transportation tasks of operators, materials and equipment, and is an important transportation tool for connecting the ground and the underground.
At present, after the main transmission of a hoist breaks down (mainly a frequency converter, a motor and the like) or the hoist stops running under extreme working conditions such as power failure of the whole mine, personnel in a cage of the hoist need to move to a safe area (the ground or a horizontal parking lot) as soon as possible, and psychological panic or other safety accidents caused by the fact that the personnel stay in a shaft for a long time are avoided. When the lifting machine stops operating due to faults or extreme conditions, the cage is lowered to a safe area by means of gravity in the conventional manual brake releasing mode, and the cage is lowered too fast due to inaccurate operation or error in manual brake releasing, so that the risk of causing major safety accidents exists, and the safety is poor.
Therefore, it is necessary to solve the above-mentioned technical problems.
Disclosure of Invention
The application provides a device is transferred to lifting machine aims at making the cage steadily transfer after lifting machine trouble or extreme condition bring to rest, improves the security that the cage transferred.
Based on above-mentioned purpose, this application provides a device is transferred to lifting machine includes: a drum; the first cage and the second cage are connected through a rope, the rope is wound on the roller, and the first cage and the second cage are respectively positioned on two sides of the upper back of the roller; the brake is positioned on the side surface of the roller, and the driving piece is in driving connection with the brake and is used for driving the brake to brake the roller; a speed sensor for measuring a lowering speed of the rope, the speed sensor being mounted on the drum; and the controller is used for starting the driving piece after the lowering speed exceeds a preset value, the signal input end of the controller is in communication connection with the signal output end of the speed sensor, and the signal output end of the controller is in communication connection with the signal input end of the driving piece.
Optionally, the brake is a hydraulic brake, the driving member includes a hydraulic pump for supplying hydraulic oil to the hydraulic brake, and the hydraulic pump is connected to the hydraulic brake through a liquid supply pipe.
Optionally, the elevator lowering device further comprises a standby power supply for supplying energy to the hydraulic pump, and the standby power supply is in circuit connection with the hydraulic pump.
Optionally, the brake comprises a disc brake.
Optionally, the disc brakes are divided into two groups, and the two groups of disc brakes are respectively arranged on two sides of the drum, which are arranged back to back, in a one-to-one correspondence manner.
Optionally, the rope is wound around a side of the drum, and the speed sensor is mounted on the side of the drum.
Optionally, the speed sensor is an angular velocity sensor or a displacement sensor.
Optionally, the device is transferred to lifting machine still includes and is used for measuring temperature sensor and the alarm of the temperature of stopper, temperature sensor installs on the stopper and with controller communication connection, the controller with alarm communication connection is in order to control when the temperature of stopper exceeds the default the alarm is reported to the police.
Optionally, the alarm is an audible and visual alarm.
Optionally, the elevator lowering device further includes a cooler for cooling the brake when the temperature of the brake exceeds a preset value, and the controller is in communication connection with the cooler to control starting and stopping of the cooler.
The application provides a device is transferred to lifting machine, when the lifting machine breaks down or the mine outage, the cylinder begins to rotate under the pulling force difference of both sides, the linear velocity of the velocity sensor real-time detection cylinder that is located on the cylinder transmits the controller with the form of signal of telecommunication with the linear velocity value that will survey, the controller contrasts linear velocity and default, controller control driving piece drive stopper when the linear velocity surpasss the default, the stopper laminating is at the rotational speed of the side friction braking of cylinder in order to reduce the cylinder, and then reduce the speed of transferring of rope and carry out speed protection, realize the effect that the rope steadily transferred, the security that first cage or second cage transferred has been improved.
Drawings
The preferred embodiments of the present application will hereinafter be described in detail to facilitate an understanding of the objects and advantages of the application, with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of a lowering device of a hoist according to an alternative embodiment of the present application.
Description of reference numerals:
1-roller, 10-rotating shaft, 11-bracket;
2-rope, 20-first cage, 21-second cage;
3-a brake;
4-driving piece, 40-liquid supply pipeline;
and 5, a controller.
Detailed Description
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like as referred to or as may be referred to in this specification are defined with respect to the configuration shown in the drawings, and the terms "inner" and "outer" refer to directions toward and away from the geometric center of a particular component and are relative terms, and thus may be changed accordingly depending on the position and the state of use of the particular component. Therefore, these and other directional terms should not be construed as limiting terms.
As shown in fig. 1, the present application provides a hoist lowering device comprising: a drum 1, a first cage 20 and a second cage 21 connected by a rope 2, a brake 3 and a driver 4, a speed sensor, and a controller 5.
Referring to fig. 1, the rope 2 may be a steel wire rope, and the drum 1 is mounted on the bracket 11 through a rotating shaft 10 and is rotatably driven by a motor. The rope 2 is wound on the roller 1, and the first cage 20 and the second cage 21 are respectively positioned on two sides of the roller 1 which are arranged on the back; the brake 3 is positioned on the side surface of the roller 1, and the driving piece 4 is in driving connection with the brake 3 and is used for driving the brake 3 to brake the roller 1; the speed sensor is used for measuring the lowering speed of the rope 2 and is arranged on the roller 1; the controller 5 is used for starting the driving piece 4 when the lowering speed exceeds a preset value, the signal input end of the controller 5 is in communication connection with the signal output end of the speed sensor, and the signal output end of the controller 5 is in communication connection with the signal input end of the driving piece 4.
In the embodiment of the application, when a hoist breaks down or a mine is powered off, the roller 1 loses driving force, at the moment, a gravity difference exists between the first cage 20 and the second cage 21 due to the fact that an operator, materials or equipment and the like are contained in the first cage 20 or the second cage 21, tension on two sides of the roller 1 is unbalanced and rotates, a part of ropes 2 connected with the heavier cage descends, a part of ropes 2 connected with the lighter cage ascends, the lowering speed of the ropes 2 depends on the rotating speed of the roller 1, and the rotating linear speed of the roller 1 is the lowering speed of the ropes 2; the preset value of the lowering speed set in the controller 5 may be 1m/s at maximum.
The application provides a device is transferred to lifting machine, when the lifting machine breaks down or the mine outage, cylinder 1 begins to rotate under the pulling force difference of both sides, the linear velocity of the velocity sensor real-time detection cylinder 1 that is located on cylinder 1 and the linear velocity value that will survey transmits to controller 5 with the form of signal of telecommunication, controller 5 contrasts linear velocity and default, controller 5 controls 4 drive brake 3 of driving piece when the linear velocity exceeds the default, 3 laminating of brake are in order to reduce the rotational speed of cylinder 1 at the side friction braking of cylinder 1, and then reduce the speed of transferring of rope 2 and carry out speed protection, realize the effect that rope 2 steadily transferred, the security of first cage 20 or second cage 21 transferring has been improved.
Optionally, the brake 3 is a hydraulic brake 3, and the driving member 4 comprises a hydraulic pump for supplying hydraulic oil to the hydraulic brake 3, the hydraulic pump being connected to the hydraulic brake 3 via a supply line 40. The hydraulic brake 3 is a normally closed brake; the hydraulic pump opens the hydraulic brake 3 by supplying hydraulic oil to the hydraulic brake 3, and the drum 1 rotates under the tension difference between the first cage 20 and the second cage 21; when the controller 5 controls the hydraulic pump to stop, the hydraulic pump stops supplying the hydraulic oil to the hydraulic brake 3, and the hydraulic brake 3 is closed to perform friction braking on the drum 1. The hydraulic brake 3 in the embodiment of the present application can be installed on the drum 1 in the same manner as the brake 3 on the hoist used in the mine in the prior art, and the detailed description thereof is omitted.
Optionally, the elevator lowering device further comprises a standby power supply for supplying energy to the hydraulic pump, and the standby power supply is connected with the hydraulic pump through a circuit. The standby power supply in the embodiment of the application can be a storage battery, and the storage battery is charged when the power is normally supplied in a mine; when power is lost in the mine, the battery discharges to power the hydraulic pump so that the hydraulic pump effectively controls the hydraulic brake 3.
Optionally, the brake 3 comprises a disc brake 3. The disc brake 3 rotates in the braking process, deformation is not easy to occur, the braking efficiency is stable, the disc brake 3 is installed on the roller 1, and the braking mode of the roller 1 can be the same as the braking mode of a vehicle in the prior art, and the description is omitted here.
Optionally, the disc brakes 3 are divided into two groups, and the two groups of disc brakes 3 are respectively arranged on two sides of the drum 1, which are back to back, in a one-to-one correspondence manner. As shown in fig. 1, two sets of disc brakes 3 are advantageous for increasing the braking stability of the drum 1.
Alternatively, the rope 2 is wound around the side of the drum 1 and the speed sensor is mounted on the side of the drum 1. In the embodiment of the application, the speed sensor and the rope 2 are arranged on the side surface of the roller 1, so that the linear speed of the roller 1 measured by the speed sensor is the same as or very close to the descending speed of the rope 2, and the braking accuracy of the controller 5 is improved.
Optionally, the speed sensor is an angular velocity sensor or a displacement sensor. When the speed sensor is an angular speed sensor, the measured radius r of the cylinder is input into the controller 5, and after the angular speed sensor transmits the measured angular speed ω to the controller 5 by an electric signal, the controller 5 calculates a linear speed v according to a formula v ═ ω r, and the calculated linear speed is the descending speed of the rope 2; when the speed sensor is a displacement sensor, after the displacement sensor transmits the measured displacement s to the controller 5 by an electric signal, the controller 5 calculates the linear speed, i.e. the descending speed of the rope 2, according to the formula v as s/t.
Optionally, the device is transferred to lifting machine still includes temperature sensor and the alarm that is used for measuring the temperature of stopper 3, and temperature sensor installs on stopper 3, and temperature sensor's signal output part and another signal input part communication connection of controller 5, another signal output part of controller 5 and the signal output part communication connection of alarm in order to control the alarm and report to the police when the temperature of stopper 3 surpasses the default. The preset value of the input temperature in the controller 5 is 300 ℃, the temperature value measured by the temperature sensor is transmitted to the controller 5 in the form of an electric signal, the controller 5 controls the alarm to give an alarm when the received temperature value is found to exceed the preset value through comparison, and an operator receives the alarm signal and then cools the brake 3 or emergently brakes the roller 1.
Optionally, the alarm is an audible and visual alarm. The audible and visual alarm can be arranged near the roller 1, so that the operator can find and process the information in time.
Optionally, the elevator lowering device further comprises a cooler for cooling the brake 3 when the temperature of the brake 3 exceeds a preset value, and another signal output end of the controller 5 is in communication connection with a signal input end of the cooler to control the start and stop of the cooler. The brake 3 is cooled by the cooler, so that the over-high temperature of the brake 3 can be avoided, and the working performance of the brake 3 can be maintained. The cooler in this application embodiment can be cooling blower, and cooling blower can be by stand-by power supply, and cooling blower's air outlet is towards the brake to provide cold wind for stopper 3.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A hoist lowering device, comprising:
a drum;
the first cage and the second cage are connected through a rope, the rope is wound on the roller, and the first cage and the second cage are respectively positioned on two sides of the upper back of the roller;
the brake is positioned on the side surface of the roller, and the driving piece is in driving connection with the brake and is used for driving the brake to brake the roller;
a speed sensor for measuring a lowering speed of the rope, the speed sensor being mounted on the drum;
and the controller is used for starting the driving piece after the lowering speed exceeds a preset value, the signal input end of the controller is in communication connection with the signal output end of the speed sensor, and the signal output end of the controller is in communication connection with the signal input end of the driving piece.
2. The hoist lowering device according to claim 1, wherein the brake is a hydraulic brake, and the driving member includes a hydraulic pump for supplying hydraulic oil to the hydraulic brake, and the hydraulic pump is connected to the hydraulic brake through a supply pipe.
3. The hoist lowering apparatus according to claim 2, further comprising a backup power supply for energizing the hydraulic pump, the backup power supply being electrically connected to the hydraulic pump.
4. The elevator lowering apparatus as in claim 1, wherein the brake comprises a disc brake.
5. The elevator lowering device as claimed in claim 4 wherein the disc brakes are divided into two groups, and the two groups of disc brakes are respectively disposed on opposite sides of the drum in a one-to-one correspondence.
6. The elevator lowering apparatus according to claim 1, wherein the rope is wound around a side of the drum, and the speed sensor is installed at the side of the drum.
7. The elevator lowering device according to claim 1, wherein the speed sensor is an angular velocity sensor or a displacement sensor.
8. The elevator lowering device as claimed in claim 1, further comprising a temperature sensor for measuring the temperature of the brake and an alarm, the temperature sensor being mounted on the brake and in communication with the controller, the controller being in communication with the alarm to control the alarm to alarm when the temperature of the brake exceeds a preset value.
9. The elevator lowering device as claimed in claim 8, wherein the alarm is an audible and visual alarm.
10. The elevator lowering apparatus as defined in claim 8, further comprising a cooler for cooling the brake when the temperature of the brake exceeds a predetermined value, wherein the controller is in communication with the cooler to control the start and stop of the cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023279847.8U CN214652914U (en) | 2020-12-29 | 2020-12-29 | Lowering device of hoister |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023279847.8U CN214652914U (en) | 2020-12-29 | 2020-12-29 | Lowering device of hoister |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214652914U true CN214652914U (en) | 2021-11-09 |
Family
ID=78505545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023279847.8U Active CN214652914U (en) | 2020-12-29 | 2020-12-29 | Lowering device of hoister |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214652914U (en) |
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2020
- 2020-12-29 CN CN202023279847.8U patent/CN214652914U/en active Active
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