CN202966300U - Variable-frequency speed-regulating mining electric trolley locomotive - Google Patents
Variable-frequency speed-regulating mining electric trolley locomotive Download PDFInfo
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- CN202966300U CN202966300U CN 201220734142 CN201220734142U CN202966300U CN 202966300 U CN202966300 U CN 202966300U CN 201220734142 CN201220734142 CN 201220734142 CN 201220734142 U CN201220734142 U CN 201220734142U CN 202966300 U CN202966300 U CN 202966300U
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- frequency converter
- frequency
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Abstract
The utility model discloses a variable-frequency speed-regulating mining electric trolley locomotive comprising a trolley locomotive body, a cab, a travelling device, a variable frequency and speed regulation control system, a braking system and a sand removing device, wherein the locomotive body is of a frame structure formed by two side steel plates, a middle clapboard and steel plates at two ends welded together, and elastic buffers are arranged at two ends of the locomotive; the travelling device comprises an axle, travelling wheels, an AC (Alternating Current) traction motor and a reduction gearbox; the frequency variation and speed regulation control system comprises a frequency converter; and a corresponding external power grid supplies direct current to the frequency converter in the electric locomotive, and the frequency converter is used for converting the direct current into three-phase alternating current with regulated voltage and frequency to be supplied to the AC traction motor. The variable-frequency speed-regulating mining electric trolley locomotive has the advantages of large starting torque, stepless speed regulating, good electric braking effect, rapid response, good reliability, high safety coefficient, small energy consumption and very low maintenance cost.
Description
Technical field
The utility model belongs to the electric locomotive technical field, is specifically related to a kind of overhead variable frequence.
Background technology
Electric locomotive is the main transportation device of coal production and constructing tunnel.Its drive system is DC traction motor, by secondary or primary gear speed reducing device with transmission of torque to wheel.DC traction motor is controlled electrical motor with the form work of series excitation by rheostatic speed regulation cam controller or DC chopped-wave controller, thereby realizes the controls such as startup, operation of electric locomotive, and what braking was adopted is the mode of mechanical braking.
The rheostatic speed regulation cam is controlled mode of speed control frenulum resistance starting, operation, and consumption of current is large; Step speed regulation, gear impacts large; Contact abrasion is large, easily ablation, and fault rate is high, and the unfailing performance safety performance is low, jeopardizes safety in production; Maintenance is frequent, and service expenditure is high, and the time of delaying work that stops production is long.Given this, State Administration of Quality and Technical Supervision and national Coal Mine Safety Supervision Bureau make an announcement in January, 2011, and the above rheostatic speed regulation trolley mining electric locomotive of regulation 7t banned use of after 2 years.
DC chopped-wave is controlled the rheostatic speed regulation cam that mode of speed control compares and is controlled mode of speed control, technical making great progress, start relatively steady, infinite speed variation, tractive force is improved, failure rate is low, but the driving motor employing be still DC traction motor.Although DC traction motor has good tractive characteristic, its commutator, armature structure are complicated, manufacturing process is complicated, cost is high; Need often to change brush, fault rate is high, and maintenance cost is high, service life is short; Its volume is large, is unfavorable for complete machine deployment.
These two kinds of mode of speed control all adopt mechanical braking, namely by hand wheel rotating leading screw or gas brake mode drivening rod mechanism, produce friction force and stop locomotive operation by increasing contact between slipper and wheel.Though DC chopped-wave is controlled mode of speed control, electric resistance braking is arranged, braking force is very weak, uses highly energy-consuming resistance, and can not realize energy consumption regeneration.This mechanical braking mode safety factor is low, delay of response, and operation is clumsy, and braking effect is poor; Mechanical wear is large, and brake shoe is very short service life, changes frequent; In growing apart from the descending operational process, in order to satisfy the requirement of stopping distance, often need come increasing friction force toward stucco on track, use very inconvenient; Easily produce high temperature, be not suitable for using in explosive atmosphere; Can make wheel lockup cause derailment accident when emergency braking.
Summary of the invention
The purpose of this utility model is to provide that a kind of moment of starting is large, infinite speed variation, electric braking is effective, reflection is rapid, good reliability, safety factor are high, energy savings, the low-down overhead variable frequence of maintenance cost.
The technical scheme that realizes the utility model purpose is: a kind of overhead variable frequence comprises stringing formula car body, driver's cab, running gear, frequency-converting speed-governing control system, brake system and sanding device; Car body forms tower structure by both sides steel plate, intermediate hsg and two ends Plate Welding, and elastic buffer is equipped with at locomotive two ends; Described running gear comprises wheel shaft, travelling wheel, AC traction motor and drop-gear box; Described frequency-converting speed-governing control system comprises frequency converter; To frequency converter, frequency converter converts direct supply to the voltage three plase alternating current supply AC traction motor adjustable with frequency to electric locomotive by corresponding outside electric power network supply direct current (DC).
In technique scheme, described frequency converter comprises frequency converter main body and controller; Described frequency converter main body is arranged in car body, and the controller of frequency converter is arranged in driver's cab.
The utility model adopts the trolley locomotive of DC traction motor to compare with tradition, has the advantages that efficient is high, the output torque is large, speed governing is level and smooth.The AC traction motor armature that the utility model adopts is without coil, absence of commutator, and non-carbonate, manufacturing process is simple, sturdy and durable, with low cost, drive efficiency is high, low torque ripple, and low noise is without position transduser, rev limit is high, and anti-soak properties are good, and are reliable, and advantage clearly.In addition, the frequency converter main body is arranged in car body, and the controller of frequency converter is arranged in driver's cab, can make driver's cab space increase, facilitates driver and maintainer's operation, maintenance and debugging frequency converter.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is another kind of structural representation of the present utility model.
The specific embodiment
(embodiment 1)
Fig. 1 and Fig. 2 have shown a kind of specific embodiment of the present utility model, and wherein Fig. 1 is a kind of structural representation of the present utility model; Fig. 2 is another kind of structural representation of the present utility model.
The present embodiment is a kind of overhead variable frequence, sees illustrated in figures 1 and 2ly, comprises stringing formula car body 1, driver's cab 2, running gear 3, frequency-converting speed-governing control system 4, brake system 5 and sanding device 6; Car body is welded to form tower structure by both sides steel plate 11, intermediate hsg 12 and two ends steel plate 13, and elastic buffer 14 is equipped with at locomotive two ends; Described running gear comprises wheel shaft 31, travelling wheel 32, AC traction motor 33 and drop-gear box 34; Described frequency-converting speed-governing control system comprises frequency converter 41; To frequency converter, frequency converter converts direct supply to the voltage three plase alternating current supply AC traction motor adjustable with frequency to electric locomotive by corresponding outside electric power network supply direct current (DC).
Described frequency converter comprises frequency converter main body 411 and controller 412; Described frequency converter main body is arranged in car body, and the controller of frequency converter is arranged in driver's cab.
The present embodiment adopts the trolley locomotive of DC traction motor to compare with tradition, has the advantages that efficient is high, the output torque is large, speed governing is level and smooth.The AC traction motor armature that the present embodiment adopts is without coil, absence of commutator, and non-carbonate, manufacturing process is simple, sturdy and durable, with low cost, drive efficiency is high, low torque ripple, and low noise is without position transduser, rev limit is high, and anti-soak properties are good, and are reliable, and advantage clearly.In addition, the frequency converter main body is arranged in car body, and the controller of frequency converter is arranged in driver's cab, can make driver's cab space increase, facilitates driver and maintainer's operation, maintenance and debugging frequency converter.
Obviously, above-described embodiment of the present utility model is only for the utility model example clearly is described, and is not to be restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And these belong to apparent variation or the change that connotation of the present utility model extends out and still belong to protection domain of the present utility model.
Claims (2)
1. an overhead variable frequence, is characterized in that: comprise stringing formula car body (1), driver's cab (2), running gear (3), frequency-converting speed-governing control system (4), brake system and sanding device (6); Car body is welded to form tower structure by both sides steel plate (11), intermediate hsg (12) and two ends steel plate (13), and elastic buffer (14) is equipped with at locomotive two ends; Described running gear comprises wheel shaft (31), travelling wheel (32), AC traction motor (33) and drop-gear box (34); Described frequency-converting speed-governing control system comprises frequency converter (41); To frequency converter, frequency converter converts direct supply to the voltage three plase alternating current supply AC traction motor adjustable with frequency to electric locomotive by corresponding outside electric power network supply direct current (DC).
2. overhead variable frequence according to claim 1, it is characterized in that: described frequency converter comprises frequency converter main body and controller (411); Described frequency converter main body is arranged in car body, and the controller of frequency converter is arranged in driver's cab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734142 CN202966300U (en) | 2012-12-28 | 2012-12-28 | Variable-frequency speed-regulating mining electric trolley locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220734142 CN202966300U (en) | 2012-12-28 | 2012-12-28 | Variable-frequency speed-regulating mining electric trolley locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202966300U true CN202966300U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220734142 Expired - Fee Related CN202966300U (en) | 2012-12-28 | 2012-12-28 | Variable-frequency speed-regulating mining electric trolley locomotive |
Country Status (1)
| Country | Link |
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| CN (1) | CN202966300U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103625478A (en) * | 2013-11-30 | 2014-03-12 | 永济新时速电机电器有限责任公司 | Industrial and mining electric locomotive of high speed stringing |
| CN106994906A (en) * | 2017-02-09 | 2017-08-01 | 湖南时代矿山机械制造有限责任公司 | A kind of permanent-magnet brushless DC electric machine stringing formula bi-motor car |
-
2012
- 2012-12-28 CN CN 201220734142 patent/CN202966300U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103625478A (en) * | 2013-11-30 | 2014-03-12 | 永济新时速电机电器有限责任公司 | Industrial and mining electric locomotive of high speed stringing |
| CN103625478B (en) * | 2013-11-30 | 2015-12-02 | 永济新时速电机电器有限责任公司 | High speed stringing industrial-mineral electric locomotive |
| CN106994906A (en) * | 2017-02-09 | 2017-08-01 | 湖南时代矿山机械制造有限责任公司 | A kind of permanent-magnet brushless DC electric machine stringing formula bi-motor car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20151228 |
|
| EXPY | Termination of patent right or utility model |