CN211880320U - Braking device for feeding trolley - Google Patents
Braking device for feeding trolley Download PDFInfo
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- CN211880320U CN211880320U CN202020385024.4U CN202020385024U CN211880320U CN 211880320 U CN211880320 U CN 211880320U CN 202020385024 U CN202020385024 U CN 202020385024U CN 211880320 U CN211880320 U CN 211880320U
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- feeding trolley
- trolley
- braking
- rectifying
- motor
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- 230000007246 mechanism Effects 0.000 claims abstract description 42
- 230000035945 sensitivity Effects 0.000 claims abstract description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000033228 biological regulation Effects 0.000 description 8
- 230000003068 static effect Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
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Abstract
The utility model discloses a feeding trolley braking device, which comprises a feeding trolley, a trolley distribution box, a rectifying and adjusting electronic braking mechanism and a hydraulic band-type brake braking mechanism; the feeding trolley is provided with a motor, the rectifying and adjusting electronic braking mechanism is arranged in a trolley distribution box, and the rectifying and adjusting electronic braking mechanism can adjust the magnitude of direct current so as to adjust the braking sensitivity of the feeding trolley; the motor is in linkage electric connection with the rectifying and adjusting electronic braking mechanism through a power transmission cable; the feeding trolley is provided with a hydraulic band-type brake mechanism, and the rectifying and adjusting electronic brake mechanism and the hydraulic band-type brake mechanism jointly brake the feeding trolley. The utility model discloses can guarantee dolly braking effect, can reduce the wearing and tearing of hydraulic pressure band-type brake system again and adjustment, reduce operating personnel's intensity of labour, guarantee the smooth operation of feed dolly.
Description
Technical Field
The utility model relates to a braking technical field of mill's feed dolly, concretely relates to feed dolly arresting gear.
Background
The braking mode of the feeding trolley of the ore crushing system of the ore dressing plant is generally designed to be a hydraulic brake for braking, and when the trolley is started, the hydraulic brake is electrified to push the push rod to release the brake holding sheet, so that the trolley moves. When the trolley is parked, the hydraulic brake pushes the brake holding sheet into the trolley shaft through the spring to hold the trolley shaft after the power of the hydraulic brake is cut off, and braking is carried out. The feeding trolley is frequently started and stopped in operation, so that the wearing of the brake pads can be caused, the braking effect of the trolley is further influenced, the parking position of the trolley is deviated, the blanking position is deviated, the trolley cannot be parked in time when reaching the limit position, and the trolley is damaged.
SUMMERY OF THE UTILITY MODEL
Because of the braking insensitive, the skew is shut down to the feed dolly, the unloading position is unsatisfactory, dolly trouble scheduling problem to the existence among the prior art, the utility model aims at providing a can guarantee dolly braking effect, can reduce again hydraulic pressure band-type brake system's wearing and tearing and adjustment, reduce operating personnel's intensity of labour, guarantee the feed dolly even running's feed dolly arresting gear.
The utility model adopts the following technical scheme:
a braking device for a feeding trolley is characterized by comprising the feeding trolley, a trolley distribution box, a rectifying and adjusting electronic braking mechanism and a hydraulic band-type brake braking mechanism; the feeding trolley is provided with a motor, the rectifying and adjusting electronic braking mechanism is arranged in a trolley distribution box, and the rectifying and adjusting electronic braking mechanism can adjust the magnitude of direct current so as to adjust the braking sensitivity of the feeding trolley; the motor is in linkage electric connection with the rectifying and adjusting electronic braking mechanism through a power transmission cable; the feeding trolley is provided with a hydraulic band-type brake mechanism, and the rectifying and adjusting electronic brake mechanism and the hydraulic band-type brake mechanism jointly brake the feeding trolley.
The device is characterized in that when the feeding trolley runs, the motor is connected with a three-phase alternating current power supply; when the feeding trolley is braked, the motor is electrified with direct current.
The utility model has the advantages that: the utility model discloses but wide application in the broken ore of internal ore dressing plant gives ore deposit system relates to the braking of mill's feed dolly, compares with prior art, the utility model discloses utilize static magnetic field braking mode, only need reform transform feed dolly power distribution system, this kind utilizes static magnetic field braking mode, can carry out sensitivity adjustment according to site conditions, and is very practical. The utility model discloses can solve because of the braking insensitive, the problem of skew, unsatisfactory, the feed dolly trouble of unloading position is shut down to the feed dolly that causes. The utility model discloses add rectification and regulation electronic brake mechanism in feed dolly block terminal, can adjust the direct current size according to on-the-spot actual conditions, and then adjust feed dolly brake sensitivity, operating personnel can be according to feed dolly operational aspect, the self-regulation brake time. And simultaneously, the utility model discloses utilize rectification and regulation electronic brake mechanism and hydraulic pressure band-type brake arrestment mechanism, during the braking of feed dolly, two sets of arrestment mechanisms move simultaneously, have both guaranteed feed dolly braking effect, can reduce hydraulic pressure band-type brake arrestment mechanism's wearing and tearing and adjustment again, also can reduce operating personnel's intensity of labour, guarantee the even running of feed dolly.
Drawings
FIG. 1 is a schematic view of the internal magnetic field and the rotation direction of the motor according to the present invention;
fig. 2 is a schematic diagram of the rotation direction of the internal magnetic field after the motor of the present invention adopts braking.
Detailed Description
Referring to fig. 1-2, the braking device of the feeding trolley of the present invention comprises a feeding trolley, a trolley distribution box, a rectifying and adjusting electronic braking mechanism, and a hydraulic band-type brake braking mechanism; the feeding trolley is provided with a motor, the rectifying and adjusting electronic braking mechanism is arranged in a trolley distribution box, and an operator can adjust the direct current according to the actual situation on site so as to adjust the braking sensitivity of the feeding trolley; the operator can adjust the braking time automatically according to the running condition of the trolley. The motor is connected with the rectification and regulation electronic braking mechanism in an interlocking and electric mode through a power transmission cable.
When the feeding trolley is braked, the rectifying and adjusting electronic brake mechanism and the hydraulic band-type brake mechanism act simultaneously, so that the braking effect of the trolley can be ensured, the abrasion and the adjustment of the hydraulic band-type brake mechanism can be reduced, the labor intensity of operators can be reduced, and the stable operation of the feeding trolley can be ensured.
The working mode of the rectification and regulation electronic braking mechanism is that 2 phases in a motor transmission cable are utilized to be connected into the rectification and regulation electronic braking mechanism, when the feeding trolley stops running, the rectification and regulation electronic braking mechanism works through linkage energization, and direct current is transmitted to the motor through the motor cable. When the feeding trolley runs, the rectification and regulation electronic brake mechanism is in linkage power-off, and the feeding trolley is normally connected with a three-phase alternating current power supply to rotate.
As shown in fig. 1-2, N, S is a motor magnetic pole, n is a motor stator rotation direction, n1 is a stator ac magnetic field direction, n2 is a stator dc magnetic field direction, and F is a torque generated by a constant magnetic field. According to the requirements of on-site production, when the feeding trolley is braked, direct current is introduced to generate a static magnetic field, and a motor rotor of the feeding trolley cuts the static magnetic field to generate a braking torque for preventing the rotor from rotating, so that the purpose of braking the feeding trolley is achieved. The feeding trolley adopts a mode that the rectification and regulation electronic braking mechanism and the hydraulic band-type brake braking mechanism simultaneously act, so as to meet the field requirement. The specific working principle is as follows:
after the motor in fig. 1 is powered on by a three-phase alternating current power supply, the stator winding magnetic poles generate a rotating magnetic field, the direction is shown as n1, under the action of the rotating magnetic field n1, induction current is generated in the motor rotor, and the current and the rotating magnetic field interact to generate electromagnetic field torque, so that the motor rotates according to the direction shown as n in fig. 1. When braking is required, after the motor is disconnected from the three-phase alternating current power supply, direct current is introduced into the stator winding, and a constant magnetic field is generated by the stator of the motor and the direction of the constant magnetic field is shown as n2 in figure 2. The motor rotor now rotates within the magnetic field due to inertia in the direction shown by n in fig. 2, and induced electromotive force is generated in the rotor conductors and induced current flows, and it is determined from the left-hand rule that the direction of the torque generated by the action of the rotor current and the constant magnetic field is opposite to the direction of the rotor speed, so that a braking torque F is generated, as shown in fig. 2. At the moment, the motor absorbs the originally stored kinetic energy or potential energy of a heavy object and then becomes electric energy to be consumed in a rotor circuit, the electric energy and the constant magnetic field interact to consume the inertia energy of a rotor of the motor to generate braking torque, so that the motor is rapidly decelerated, and finally the rotation is stopped.
Claims (2)
1. A braking device for a feeding trolley is characterized by comprising the feeding trolley, a trolley distribution box, a rectifying and adjusting electronic braking mechanism and a hydraulic band-type brake braking mechanism; the feeding trolley is provided with a motor, the rectifying and adjusting electronic braking mechanism is arranged in a trolley distribution box, and the rectifying and adjusting electronic braking mechanism can adjust the magnitude of direct current so as to adjust the braking sensitivity of the feeding trolley; the motor is in linkage electric connection with the rectifying and adjusting electronic braking mechanism through a power transmission cable; the feeding trolley is provided with a hydraulic band-type brake mechanism, and the rectifying and adjusting electronic brake mechanism and the hydraulic band-type brake mechanism jointly brake the feeding trolley.
2. The apparatus of claim 1, wherein when said feed trolley is in operation, said motor is connected to a three-phase ac power supply; when the feeding trolley is braked, the motor is electrified with direct current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020385024.4U CN211880320U (en) | 2020-03-24 | 2020-03-24 | Braking device for feeding trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020385024.4U CN211880320U (en) | 2020-03-24 | 2020-03-24 | Braking device for feeding trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211880320U true CN211880320U (en) | 2020-11-06 |
Family
ID=73256816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020385024.4U Active CN211880320U (en) | 2020-03-24 | 2020-03-24 | Braking device for feeding trolley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211880320U (en) |
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2020
- 2020-03-24 CN CN202020385024.4U patent/CN211880320U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240222 Address after: 737100 No. 2 Lanzhou Road, Beijing Road Street, Jinchuan District, Jinchang City, Gansu Province Patentee after: Jinchuan Group Nickel Cobalt Co.,Ltd. Country or region after: China Address before: 737103 No. 98, Jinchuan Road, Jinchang, Gansu Patentee before: JINCHUAN GROUP Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |