CN103963652A

CN103963652A - Improved retarder

Info

Publication number: CN103963652A
Application number: CN201410221786.XA
Authority: CN
Inventors: 李�诚; 闫诚; 张文佳; 庄本刚
Original assignee: Shandong Hualian Mining Co Ltd
Current assignee: Shandong Hualian Mining Co Ltd
Priority date: 2014-05-23
Filing date: 2014-05-23
Publication date: 2014-08-06

Abstract

The invention relates to the technical field of automobile retarders, in particular to an improved retarder. The improved retarder comprises stator coils, a rotor and a transmission shaft, wherein twp gears I and II different in diameter are installed on the transmission shaft, the gears I and II are respectively meshed with driven gears I and II, the driven gears I and II are fixedly connected through a driven shaft, a gear shifting shaft ring is arranged between the driven gears I and II and connected with a gear shifting fork, the driven gears I and II corresponding to the gear shifting shaft ring are provided with clamping grooves, the stator coils and the rotor are arranged on the driven shaft, each stator coil is sequentially in series connection with a fuse resistor and a relay coil, eight relay normally-closed contacts are connected in parallel and then are in series connection with a motor, a gear shifting mechanism is arranged on a motor rotation shaft, and the clamping groove of the driven gear II is provided with a normally-closed limiting switch. The improved retarder is safe and reliable in use, can still keep normal braking effect after the stator coils are subjected to short circuit and can well play an auxiliary braking role.

Description

Improved type retarder

Technical field

The present invention relates to automobile retarder technical field, be specifically related to a kind of improved type retarder.

Background technology

In the brake system that regular bus uses now, increase retarder, when brake gets involved, the preferential effect that plays auxiliary braking that gets involved of retarder, due to the position of retarder installation and the defect of internal structure existence, in being easy in use procedure before magnetic force increases, coil is received activity under antagonistic force, and the time one is long, and coil insulation reduction is short-circuited,, there is potential safety hazard in the braking effect of the serious image automobile of meeting like this.

Summary of the invention

For overcoming the deficiency in above-mentioned technology, the object of the invention is to: a kind of improved type retarder is provided, safe and reliable, after being short-circuited, stator coil still can keep normal braking effect, play better the effect of assist brake.

For solving the problems of the technologies described above, the technical solution adopted in the present invention is:

Described improved type retarder, comprise 8 stator coils, rotor and transmission shaft, two gear I and gear II that diameter is different are housed on described transmission shaft, gear I and gear II engage with driven gear I and driven gear II respectively, gear I diameter is less than gear II diameter, driven gear I diameter is greater than driven gear II diameter, driven gear I is fixedly connected with by driven shaft with driven gear II, between driven gear I and driven gear II, the gearshift axle collar is set, the gear shift axle collar connects L shaped selector fork, control fork is provided with tooth bar, gear shift axle collar both sides evenly arrange block-shaped protrusion, driven gear I and driven gear II arrange draw-in groove corresponding to the gearshift axle collar, stator coil and rotor are arranged on driven shaft, each stator coil wire fuse resistance in sequential series and relay coil, after each relay normally closed contact parallel connection, connect with motor, machine shaft is provided with power shift gear, power shift gear engages with tooth bar, in driven gear II draw-in groove, be provided with normally closed limit switch, normally closed limit switch, motor, relay normally closed contact and motor power form C/LOOP.

Wherein, preferred version is:

Described gear I and gear II diameter add and add and equate with engaging gear I diameter and engaging gear II diameter; Ensure that transmission shaft and driven shaft are parallel to each other; The diameter of described engaging gear I is 1.3 times of diameter of engaging gear II, exits after braking a stator coil short circuit, allows and can keep original braking effect.

While using the present invention to brake, under normal circumstances, after stator coil energising, relay coil obtains electric, relay normally open contact adhesive, motor is failure to actuate, under the drive of driven shaft driven gear I, rotate, rotor and stator coil interact and produce braking effect, once there is stator coil short circuit, electric current moment increases, wire fuse resistance is burnt, relay coil moves back electricity, the stator coil of short circuit exits braking, the adhesive of relay normally closed contact, motor is communicated with motor power, machine shaft drives change gear rotation, tooth bar engages with change gear, control fork drives the gear shift axle collar to depart from driven gear I, move to driven gear II direction, until after the normally closed limit switch of shift shaft loop contacts, normally closed limit switch disconnects, motor current supply circuit disconnects, machine shaft stops the rotation, driven shaft rotates under the drive of driven gear II, rotating speed increases, the stator coil of braking is exited in compensation, keep braking effect.

Compared with prior art, the present invention has following beneficial effect:

The present invention overcomes existing automobile retarder defect, safe and reliable, after being short-circuited, stator coil still can keep normal braking effect, play better the effect of assist brake, 8 stator coils are passed through respectively to a relay coil of wire fuse resistance series connection, and after coil short circuit, by wire fuse resistance, fault coil is exited to braking in time, and realize gear shift control by electric machine control control fork, and regulate output speed, keep normal braking effect.

Brief description of the drawings

Fig. 1 structured flowchart of the present invention.

Fig. 2 stator coil, wire fuse resistance and relay necklace annexation schematic diagram.

Fig. 3 motor feed circuit schematic diagram.

In figure: 1, stator coil; 2, rotor; 3, transmission shaft; 4, gear I; 5, gear II; 6, driven gear I; 7, driven gear II; 8, driven shaft; 9, the gear shift axle collar; 10, control fork; 11, wire fuse resistance; 12, relay coil; 13, relay normally closed contact; 14, motor; 15, normally closed limit switch.

Detailed description of the invention

Tying brief description of the drawings is below described further the embodiment of the present invention:

As shown in Figure 1, improved type retarder of the present invention, comprise stator coil 1, rotor 2 and transmission shaft 3, two gear I and gear II5 that diameter is different are housed on described transmission shaft 3, gear I4 and gear II5 engage with driven gear I6 and driven gear II7 respectively, gear I4 diameter is less than gear II5 diameter, driven gear I6 diameter is greater than driven gear II7 diameter, driven gear I6 is fixedly connected with by driven shaft 8 with driven gear II7, the gearshift axle collar 9 is set between driven gear I6 and driven gear II7, the gear shift axle collar 9 connects L shaped selector fork 10, control fork 10 is provided with tooth bar, the gear shift axle collar 9 both sides evenly arrange block-shaped protrusion, driven gear I6 and driven gear II7 arrange draw-in groove corresponding to the gearshift axle collar 9, stator coil 1 and rotor 2 are arranged on driven shaft 8, each stator coil 1 wire fuse resistance 11 in sequential series and relay coil 12, after each relay normally closed contact 13 is in parallel, connect with motor 14, motor 14 rotating shafts are provided with power shift gear, power shift gear engages with tooth bar, in driven gear II7 draw-in groove, be provided with normally closed limit switch, normally closed limit switch 15, motor 14, relay normally closed contact 13 and motor power 16 form C/LOOP.

Wherein, preferred version is:

Described gear I4 and gear II5 diameter add and add and equate with driven gear I6 diameter and driven gear II7 diameter; Ensure that transmission shaft 3 and driven shaft 8 are parallel to each other; The diameter of described driven gear I6 is 1.3 times of diameter of driven gear II7, exits after braking stator coil 1 short circuit, allows and can keep original braking effect; Stator coil 1 is consistent with the method to set up of rotor and common automobile retarder; Arranging of the fit structure of the gear shift axle collar, control fork and driven gear I, II and general-utility car hand-operated transmission middle shaft collar, selector fork and gear is identical.

While using the present invention to brake, under normal circumstances, after stator coil 1 energising, relay coil 12 obtains electric, relay normally open contact adhesive, motor 14 is failure to actuate, under the drive of driven shaft 8 driven gear I6, rotate, rotor 2 and stator coil 1 interact and produce braking effect, once there is stator coil 1 short circuit, electric current moment increases, wire fuse resistance 11 is burnt, relay coil 12 moves back electricity, the stator coil 1 of short circuit exits braking, 13 adhesives of relay normally closed contact, motor 14 is communicated with motor power 16, motor 14 rotating shafts drive change gear rotation, tooth bar engages with change gear, control fork 10 drives the gear shift axle collar 9 to depart from driven gear I6, move to driven gear II7 direction, until the gear shift axle collar 9 contacts after normally closed limit switch 15, normally closed limit switch 15 disconnects, motor 14 current supply circuits disconnect, motor 14 rotating shafts are stopped the rotation, driven shaft 8 rotates under the drive of driven gear II7, rotating speed increases, the stator coil 1 of braking is exited in compensation, keep braking effect.

Claims

1. an improved type retarder, comprise stator coil (1), rotor (2) and transmission shaft (3), it is characterized in that, two gear I (4) and gear II (5) that diameter is different are housed on described transmission shaft (3), gear I (4) and gear II (5) engage with driven gear I (6) and driven gear II (7) respectively, (4 diameters are less than gear II (5 diameters to gear I, driven gear I (6) diameter is greater than driven gear II (7) diameter, driven gear I (6) is fixedly connected with by driven shaft (8) with driven gear II (7), the gearshift axle collar (9) is set between driven gear I (6) and driven gear II (7), the gear shift axle collar (9) connects L shaped selector fork (10), control fork (10) is provided with tooth bar, the gear shift axle collar (9) both sides evenly arrange block-shaped protrusion, driven gear I (6) and driven gear II (7) arrange draw-in groove corresponding to the gearshift axle collar (9), stator coil (1) and rotor (2) are arranged on driven shaft (8), each stator coil (1) wire fuse resistance in sequential series (11) and relay coil (12), each relay normally closed contact (is connected with motor (14) after 13 parallel connections, motor (14) rotating shaft is provided with power shift gear, power shift gear engages with tooth bar, in driven gear II (7) draw-in groove, be provided with normally closed limit switch (15), normally closed limit switch (15), motor (14), relay normally closed contact (13) and motor power (16) form C/LOOP.

2. improved type retarder according to claim 1, is characterized in that, described gear I (4) and gear II (5) diameter add and add and equate with driven gear I (6) diameter and driven gear II (7) diameter.

3. improved type retarder according to claim 1, is characterized in that, the diameter of described driven gear I (6) is 1.3 times of diameter of driven gear II (7).