CN218431208U - Eddy current retarder cooling system and engineering machinery - Google Patents
Eddy current retarder cooling system and engineering machinery Download PDFInfo
- Publication number
- CN218431208U CN218431208U CN202222894219.3U CN202222894219U CN218431208U CN 218431208 U CN218431208 U CN 218431208U CN 202222894219 U CN202222894219 U CN 202222894219U CN 218431208 U CN218431208 U CN 218431208U
- Authority
- CN
- China
- Prior art keywords
- eddy current
- current retarder
- fan
- retarder
- cooling system
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The utility model provides an eddy current retarder cooling system and engineering machine tool, wherein, eddy current retarder cooling system includes: the electric eddy current retarder is arranged on an axle of the engineering machinery; and the radiator fan is arranged on the frame of the engineering machinery and at a position corresponding to the eddy current retarder. The utility model discloses an eddy current retarder cooling system sets up the radiator fan through the position that corresponds with the eddy current retarder for carry out the forced air cooling heat dissipation of eddy current retarder, realized the initiative heat dissipation of eddy current retarder, promoted the radiating effect of eddy current retarder, the security when having promoted the engineering machine tool and traveling.
Description
Technical Field
The utility model relates to an engineering machine tool technical field particularly, relates to an eddy current retarder cooling system and engineering machine tool.
Background
An auxiliary braking mode adopting an electric eddy current retarder (commonly called an electric brake) is widely applied to engineering machinery. The device can generate large heat in the using process, and the temperature of the device can be increased sharply, so that the braking efficiency is reduced obviously. Specifically, as shown in fig. 1, when the temperature of the eddy current retarder exceeds the recession temperature B, the braking efficiency of the eddy current retarder decreases as the temperature continues to increase.
At present, an eddy current retarder generally has a cooling fin disposed on a rotor thereof to perform a cooling function by the cooling fin along with the rotation of the rotor. However, since the rotor of the eddy current retarder rotates along with the corresponding transmission shaft of the engineering machine, the heat dissipation of the eddy current retarder is passively realized through the rotation of the transmission shaft, so that the heat dissipation effect of the eddy current retarder is poor, and the heat dissipation effect meeting the requirement, namely, the heat dissipation effect with high braking efficiency is difficult to obtain.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem be: how to realize the active heat dissipation of the eddy current retarder.
In order to solve the above problem, the utility model provides an eddy current retarder cooling system, include:
the electric eddy current retarder is arranged on an axle of the engineering machinery;
and the radiator fan is arranged on the frame of the engineering machinery at a position corresponding to the eddy current retarder.
Optionally, the heat dissipation system of the eddy current retarder further includes a fan speed adjusting mechanism for being disposed on the engineering machine, and the fan speed adjusting mechanism is in communication connection with the radiator fan.
Optionally, the heat dissipation system of the eddy current retarder further includes a temperature sensor disposed on the eddy current retarder, and the temperature sensor is in communication connection with the fan speed adjusting mechanism.
Optionally, the heat dissipation system of the eddy current retarder further includes an eddy current retarder state monitoring mechanism, and the eddy current retarder state monitoring mechanism is in communication connection with the fan speed adjusting mechanism.
Optionally, the state monitoring mechanism of the eddy current retarder comprises an excitation current monitoring structure for monitoring an excitation current in a stator coil of the eddy current retarder.
Optionally, the heat sink fan includes a fan blade and an actuator motor for driving the fan blade to rotate, and the actuator motor is in communication connection with the fan speed adjustment mechanism.
Optionally, the actuator motor comprises a continuously variable motor.
Optionally, the fan speed adjusting mechanism is used for being in communication connection with a traveling computer of the engineering machine.
In order to solve the problem, the utility model also provides an engineering machine tool, including the aforesaid eddy current retarder cooling system.
Optionally, at least one eddy current retarder of the heat dissipation system of the eddy current retarder is provided.
Compared with the prior art, the utility model, following beneficial effect has: the radiator fan is arranged at the position corresponding to the eddy current retarder, so that the air-cooled heat dissipation of the eddy current retarder is performed, the active heat dissipation of the eddy current retarder is realized, the heat dissipation effect of the eddy current retarder is improved, and the safety of engineering machinery during running is improved.
Drawings
FIG. 1 is a graph showing a decay curve of braking efficiency and temperature variation of an eddy current retarder;
FIG. 2 is a schematic structural view of an embodiment of the present invention, in which a heat dissipation system of an eddy current retarder is disposed on an engineering machine;
fig. 3 is a partially enlarged view of a portion a in fig. 2.
Description of reference numerals:
1-an eddy current retarder; 2-radiator fan; 3-a temperature sensor; 4-vehicle bridge; 5-vehicle frame.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
Combine fig. 2, fig. 3 to show, the embodiment of the utility model provides an eddy current retarder cooling system, include:
the electric eddy current retarder 1 is arranged on an axle 4 of the engineering machinery;
and a radiator fan 2 provided at a position corresponding to the eddy current retarder 1 on a frame 5 of the construction machine.
In this embodiment, the heat dissipation system of the eddy current retarder is used for engineering machinery. Specifically, an eddy current retarder 1 of the eddy current retarder heat dissipation system is used for being arranged on an axle 4 of the engineering machinery, wherein a rotor of the eddy current retarder 1 can be fixedly arranged on an output flange (or a transmission case output shaft) of the axle 4; a radiator fan 2 for carrying out forced air cooling to eddy current retarder 1 sets up on engineering machine tool's frame 5, and its position is corresponding with eddy current retarder 1 to guarantee that the air current that radiator fan 2 blew out can accurate flow to eddy current retarder 1, realize radiator fan 2 to the heat dissipation of eddy current retarder 1. Moreover, for the rotor structure to the eddy current retarder among the prior art changes in order to realize corresponding forced air cooling or water-cooling's mode, the eddy current retarder cooling system in this embodiment has simple structure, the advantage of easily realizing.
Like this, through set up radiator fan 2 in the position that corresponds with eddy current retarder 1 for carry out the forced air cooling heat dissipation of eddy current retarder 1, realized the initiative heat dissipation of eddy current retarder 1, promoted the radiating effect of eddy current retarder 1, guaranteed engineering machine's braking ability, the security when having promoted engineering machine and traveling.
Optionally, the heat dissipation system of the eddy current retarder further includes a fan speed adjusting mechanism disposed on the engineering machine, and the fan speed adjusting mechanism is in communication connection with the radiator fan 2.
In this embodiment, the fan speed adjusting mechanism is disposed on the engineering machine, and is in communication connection with the radiator fan 2, and is configured to adjust the speed of the radiator fan 2. Based on that the radiator fan 2 has different air volume and heat dissipation power at different rotating speeds, the rotating speed of the radiator fan 2 is adjusted by arranging the fan rotating speed adjusting mechanism so as to obtain the required heat dissipation effect of the eddy current retarder 1. In some embodiments, the fan speed adjustment mechanism may adjust the speed of the radiator fan 2 accordingly, depending on a temperature change of the eddy current retarder 1, etc. Illustratively, the fan speed adjustment mechanism includes a PWM speed adjustment structure that adjusts the speed of the radiator fan 2 by adjusting a duty ratio (a ratio of the energization time to the total time within one pulse cycle), and a DC speed adjustment structure that adjusts the speed of the radiator fan 2 by adjusting the magnitude of the voltage input to the radiator fan 2.
Optionally, as shown in fig. 2 and fig. 3, the cooling system of the eddy current retarder further includes a temperature sensor 3 disposed on the eddy current retarder 1, and the temperature sensor 3 is in communication connection with the fan speed adjusting mechanism.
In this embodiment, the temperature sensor 3 is disposed on the eddy current retarder 1 and is configured to monitor the temperature and the change of the eddy current retarder 1. The temperature sensor 3 feeds back the monitored temperature of the eddy current retarder 1 to the fan rotating speed adjusting mechanism in real time, and the fan rotating speed adjusting mechanism adjusts the rotating speed of the radiator fan 2 according to the real-time temperature of the eddy current retarder 1.
The adjustment of the rotation speed of the radiator fan 2 by the fan rotation speed adjustment mechanism will be described below, for example, with reference to fig. 1. Based on the temperature of eddy current retarder 1 braking efficiency can keep at high level comparatively steadily when being less than recession temperature (writing as B), and the temperature of eddy current retarder 1 braking efficiency can descend along with the continuation rising of temperature when exceeding recession temperature, sets up an alarm temperature (writing as A to eddy current retarder 1, A < B), the real-time temperature (writing as C) of eddy current retarder 1 with the monitoring of temperature sensor 3. When eddy current retarder 1 during operation (when carrying out the auxiliary braking promptly, whether the accessible detects eddy current retarder 1's corresponding coil and switches on and confirms), when C that temperature sensor 3 monitoring obtained is less than A, eddy current retarder 1 need not the heat dissipation demand this moment, and radiator fan 2 need not to start. When the A is less than or equal to the C and less than the B, the fan rotating speed adjusting mechanism can start the radiator fan 2 and adjust the rotating speed of the radiator fan 2 to a fixed value D (D is a constant and represents a rotating speed value which can meet the heat dissipation requirement of the eddy current retarder 1 at the stage), at the moment, the braking efficiency of the eddy current retarder 1 does not begin to decline, and the radiator fan 2 runs at a constant rotating speed. When C ≧ B, the fan rotation speed adjustment mechanism can dynamically adjust the rotation speed (denoted as f) of the radiator fan 2 in accordance with a change in C, for example, f = m (C-B) + D, where m is a constant coefficient. Accordingly, when the temperature of the eddy current retarder 1 decreases, the fan speed adjusting mechanism adjusts the speed of the radiator fan 2 to decrease in stages as described above. In addition, when the radiator fan 2 cools the eddy current retarder 1 to a temperature C not greater than a-E, the fan speed adjusting mechanism adjusts the speed of the radiator fan 2 to 0 (stop running), wherein E is a constant not less than 0, such as 0, 1, 2, 3, and the like. So, the rotational speed of eddy current retarder cooling system's radiator fan 2 is according to the real-time temperature dynamic adjustment of eddy current retarder 1, has avoided the problem that ordinary constant speed fan exists that low rotational speed radiating efficiency is poor, high rotational speed electric energy consumption is too high and waste resources, can reduce the consumption when guaranteeing high radiating efficiency.
Like this, eddy current retarder cooling system adopts radiator fan 2 to initiatively dispel the heat to eddy current retarder 1, can promote the heat dissipation (cooling) efficiency of eddy current retarder 1. And through setting up temperature sensor 3 and fan rotational speed adjustment mechanism for the rotational speed of radiator fan 2 can be adjusted according to the real-time temperature of eddy current retarder 1 of temperature sensor 3 monitoring, has compromise high radiating efficiency and the low-power consumption of eddy current retarder 1.
Optionally, the cooling system of the eddy current retarder further includes an eddy current retarder state monitoring mechanism, and the eddy current retarder state monitoring mechanism is in communication connection with the fan speed adjusting mechanism.
In this embodiment, the state monitoring mechanism of the eddy current retarder is used for monitoring the operating state of the eddy current retarder 1, that is, for monitoring whether the eddy current retarder 1 works. When the state monitoring mechanism of the eddy current retarder monitors that the eddy current retarder 1 starts to work, the state monitoring mechanism feeds back the state monitoring information to the fan rotating speed adjusting mechanism, and at the moment, the fan rotating speed adjusting mechanism starts to start again. So, through setting up the eddy current retarder state monitoring mechanism who is connected with fan speed adjustment mechanism communication to guarantee that fan speed adjustment mechanism in time combines temperature sensor 3 etc. to carry out the regulation of 2 rotational speeds of radiator fan after eddy current retarder 1 works, avoid fan speed adjustment mechanism to be in the running state for a long time and shorten life simultaneously. In some embodiments, the state monitoring mechanism of the eddy current retarder monitors whether a stator coil of the eddy current retarder 1 is powered on by adopting a corresponding current monitoring structure (such as an ammeter, a current sensor, etc.) to determine whether the eddy current retarder 1 works, and if so, determines that the eddy current retarder 1 works; if the current is not electrified, the eddy current retarder 1 is judged not to work. In other embodiments, the state monitoring mechanism of the eddy current retarder monitors whether a corresponding control mechanism for controlling the eddy current retarder 1 to start or stop sends a start instruction through a corresponding instruction monitoring structure to determine whether the eddy current retarder 1 works, and if the corresponding control mechanism sends the start instruction, it is determined that the eddy current retarder 1 works; and if the corresponding control mechanism does not send a starting instruction, judging that the eddy current retarder 1 does not work.
Optionally, the state monitoring mechanism of the eddy current retarder comprises an excitation current monitoring structure for monitoring the excitation current in the stator coil of the eddy current retarder 1.
In this embodiment, the excitation current monitoring structure (such as an ammeter and a current sensor) is used to monitor the magnitude of the excitation current in the stator coil of the eddy current retarder 1, that is, is used to monitor the current value of the excitation current in the stator coil of the eddy current retarder 1. The state monitoring mechanism of the eddy current retarder can monitor whether a stator coil of the eddy current retarder 1 is electrified through the exciting current monitoring structure to judge whether the eddy current retarder 1 works, and if the stator coil is electrified, the eddy current retarder 1 starts to work; if the current is not electrified, the eddy current retarder 1 does not start to work. The excitation current monitoring structure is also used for monitoring the size of excitation current in the stator coil and is in communication connection with the fan rotating speed adjusting mechanism. Because the larger the exciting current passing through the stator coil of the eddy current retarder 1 is, the stronger the generated magnetic field is, the larger the braking torque of the rotor of the eddy current retarder 1 is, and the larger the heat generated by the eddy current retarder 1 is generally; therefore, the fan rotation speed adjusting mechanism can perform adjustment of the rotation speed of the radiator fan 2 in conjunction with the excitation current monitoring structure. Illustratively, the fan rotational speed adjustment mechanism adjusts the increase of the rotational speed of the radiator fan 2 by a certain degree when the current value of the excitation current monitored in real time by the excitation current monitoring structure increases by a certain degree.
Optionally, the fan speed adjusting mechanism is used for communicating with a traveling computer of the engineering machine.
In this embodiment, the fan rotation speed adjustment mechanism may be controlled by a vehicle computer (ECU) in combination with the temperature sensor 3, the excitation current monitoring structure, and the like, thereby realizing adjustment of the rotation speed of the radiator fan 2. Exemplarily, the temperature sensor 3 monitors the real-time temperature of the eddy current retarder 1 and feeds the real-time temperature back to the ECU, then the ECU synthesizes the temperature of the eddy current retarder 1 and corresponding braking efficiency reduction curve data, calculates the heat dissipation required power of the eddy current retarder 1, and deduces the actual rotating speed function of the radiator fan 2 according to the heat dissipation power of the radiator fan 2 at different rotating speeds, so as to reduce the temperature of the eddy current retarder 1, so that the temperature of the eddy current retarder 1 is reduced to be below a braking efficiency decline point (decline temperature B), and after the temperature of the eddy current retarder 1 is reduced, the rotating speed of the radiator fan 2 is also reduced along with the reduction of the temperature, thereby reducing the energy consumption of the radiator. So, make eddy current retarder cooling system have following advantage: the rotating speed of the radiator fan 2 is adjusted according to the actual temperature of the eddy current retarder 1, the temperature of the eddy current retarder 1 can be ensured to be reduced below a brake fade point, and the intelligent cooling of the eddy current retarder 1 is realized; the heat dissipation demand of the eddy current retarder is accurately matched by combining factors such as the heat dissipation power of the fan and the like, so that the corresponding rotation speed of the radiator fan 2 is adjusted, and energy is saved and the temperature is accurately reduced; the eddy current retarder cooling system has the advantages of few parts, simple structure and low failure rate under the condition of meeting the cooling requirement.
Optionally, the radiator fan 2 includes fan blades and an actuator motor for driving the fan blades to rotate, and the actuator motor is in communication with the fan speed adjustment mechanism.
In this embodiment, the fan blades of the radiator fan 2 are driven by an actuator motor, and the fan rotation speed adjusting mechanism adjusts the rotation speed of the fan blades by adjusting the rotation speed of the actuator motor.
Optionally, the actuator motor is fixed to the input flange of the fan blade.
Optionally, the actuator motor comprises a continuously variable motor.
In the present embodiment, the actuator motor is a continuously variable motor, that is, the radiator fan 2 is a continuously variable fan. So for radiator fan 2's rotational speed can realize infinitely variable control, have the accommodation wide, easily carry out the advantage of adjusting for fan speed adjustment mechanism, and radiator fan 2 of being convenient for has the rotational speed (consumption) of lower consumption in the maintenance that promotes eddy current retarder 1's radiating efficiency, with the high radiating efficiency and the low-power consumption of compromise eddy current retarder 1.
Another embodiment of the utility model provides an engineering machine tool, including foretell eddy current retarder cooling system.
In this embodiment, the engineering machine is through setting up eddy current retarder cooling system to set up radiator fan 2 in the position that corresponds with eddy current retarder 1, be used for carrying out the forced air cooling heat dissipation of eddy current retarder 1, realized the initiative heat dissipation of eddy current retarder 1, promoted the radiating effect of eddy current retarder 1, guaranteed engineering machine's braking ability, the security when having promoted engineering machine and traveling.
Optionally, the eddy current retarder 1 of the eddy current retarder cooling system is provided with at least one.
In this embodiment, one or more eddy current retarders 1 of the eddy current retarder heat dissipation system on the engineering machinery may be provided. When the eddy current retarder 1 is provided with a plurality of eddy current retarders 1, the plurality of eddy current retarders 1 may be provided on the same axle 4 or different axles 4 of the engineering machine.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications are intended to fall within the scope of the disclosure.
Claims (10)
1. An eddy current retarder cooling system, comprising:
the electric eddy current retarder (1) is arranged on an axle (4) of the engineering machinery;
and the radiator fan (2) is arranged on the frame (5) of the engineering machinery at a position corresponding to the eddy current retarder (1).
2. The eddy current retarder cooling system according to claim 1, further comprising a fan speed adjustment mechanism for being arranged on the engineering machine, wherein the fan speed adjustment mechanism is in communication connection with the radiator fan (2).
3. The cooling system of the eddy current retarder according to claim 2, further comprising a temperature sensor (3) for being disposed on the eddy current retarder (1), wherein the temperature sensor (3) is in communication connection with the fan speed adjusting mechanism.
4. The eddy current retarder cooling system of claim 2, further comprising an eddy current retarder status monitoring mechanism in communicative connection with the fan speed adjustment mechanism.
5. An eddy current retarder heat dissipation system according to claim 4, characterized in that the eddy current retarder status monitoring means comprise an excitation current monitoring structure for monitoring the excitation current in the stator coils of the eddy current retarder (1).
6. The eddy current retarder cooling system according to claim 2, wherein the radiator fan (2) comprises fan blades and an actuator motor for driving the fan blades to rotate, and the actuator motor is connected in communication with the fan speed adjusting mechanism.
7. The eddy current retarder cooling system of claim 6, wherein the implement motor comprises a continuously variable motor.
8. An eddy current retarder cooling system according to any one of claims 2-7, wherein the fan speed adjusting mechanism is used for being in communication connection with a traveling computer of the engineering machine.
9. A working machine, characterized by comprising the heat dissipation system of the eddy current retarder of any one of claims 1-8.
10. A working machine according to claim 9, characterized in that the eddy current retarder (1) of the eddy current retarder heat dissipation system is provided with at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222894219.3U CN218431208U (en) | 2022-10-31 | 2022-10-31 | Eddy current retarder cooling system and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222894219.3U CN218431208U (en) | 2022-10-31 | 2022-10-31 | Eddy current retarder cooling system and engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218431208U true CN218431208U (en) | 2023-02-03 |
Family
ID=85072837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222894219.3U Active CN218431208U (en) | 2022-10-31 | 2022-10-31 | Eddy current retarder cooling system and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218431208U (en) |
-
2022
- 2022-10-31 CN CN202222894219.3U patent/CN218431208U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3517335B1 (en) | Electric vehicle | |
| US8324846B2 (en) | Electric drive retarding system and method | |
| CN107554353B (en) | Whole vehicle torque control method of electric vehicle | |
| US6538412B1 (en) | Method for controlling a power drive system | |
| US20100066292A1 (en) | Retarding energy calculator for an electric drive machine | |
| CN106416050B (en) | Method for controlling braking system | |
| RU2001108530A (en) | HIGH POWER DRIVE SYSTEM MANAGEMENT METHOD | |
| CN218431208U (en) | Eddy current retarder cooling system and engineering machinery | |
| CN117652080A (en) | Method for controlling the temperature of an electric motor and fluid supply device | |
| CN110920378A (en) | Intelligent thermal management control method for vehicle motor driving system | |
| EP1475263B1 (en) | A controller for a power train | |
| EP2703242B1 (en) | Hybrid industrial vehicle | |
| CN115459523B (en) | Self-driven heat dissipation permanent magnet motor | |
| AU2011302496A1 (en) | Retarding grid cooling system and control | |
| CN108528184B (en) | Electric drive cooling system and electric drive cooling control method | |
| DE102010043084A1 (en) | Method for adjusting rotational speed of radiator fan in motor vehicle exposed to wind flow, involves controlling rotational speed of radiator fan to predetermined speed by motoring operation of drive motor | |
| CN111559254B (en) | Multi-power coupling drive control device and method | |
| CN111806326B (en) | Permanent magnet motor traction mining electric transmission dump truck and control method | |
| EP3978301B9 (en) | Power allocation method of bielectric system and vehicle | |
| EP3796543B1 (en) | Method for operating a brushed direct current electric motor, data processing apparatus, computer program, computer-readable data carrier and a device | |
| WO2024142094A1 (en) | System and method for improving efficiency of an induction motor | |
| JPS63124797A (en) | Helper drive for turbine | |
| US20200195173A1 (en) | Method for controlled motor speed reduction and mechanism for controlling motor speed reduction | |
| CN113572406A (en) | Reluctance switch motor control method | |
| TW201618981A (en) | Electric vehicle electrical energy recovery system with AC machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |