CN2509038Y

CN2509038Y - Middle cylinder back force type brake test table for motor-speed reducer

Info

Publication number: CN2509038Y
Application number: CN 01264098
Authority: CN
Inventors: 周申生; 夏光扬; 杨超
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-29
Filing date: 2001-09-29
Publication date: 2002-09-04
Anticipated expiration: 2011-09-29

Abstract

The utility model discloses a motor-speed reducer embedded roller opposite forces type brake tester. The main structure of the utility model includes a roller unit, a motor-speed reducer unit, a third roller unit which are fixed on the frame; wherein the main and the assistant roller of the roller unit are connected through a chain wheel transmission unit, the underside of the shaft end gear of the third roller is provided with a third roller speed measuring sensor. The underside of each roller has a supporting spring, and a photoelectricity switch is arranged on a proper position on the side board of each roller. A force measuring sensor is arranged on a transmission shaft between the roller unit and the motor-speed reducing unit. The motor and the speed reducer are integrated into a whole body through bolts, and are arranged in the spaces of the inner ends of the left and the right rollers of the roller unit. The output shaft of the motor extends into the speed reducer, and transmits the torque and the power through a gear. The output shaft of the motor-speed reducer unit links with the main roller of the roller unit axially. The utility model can measure the brake force of the car effectively, and have small size, integrated frame, footless bolt, convenient installation, and convenient maintenance.

Description

Motor-reductor middle drum reaction type brake test bench

Technical field

The utility model relates to a kind of motor-reductor middle drum reaction type brake test bench.

Background technology

Motor-reductor drum reaction type brake test bench is a kind of equipment of measured automobiles braking and brake system coordinated time, employed motor-the reductor of present domestic most of drum reaction type brake test bench adopts worm gear, worm structure more, satisfying under the prerequisite of its function, it is bigger that volume seems, especially length dimension is very big, transmission efficiency is on the low side, and manufacturing process is more complicated also.Therefore brake test bench cylinder inner width * cylinder outside, under the wide condition near (satisfying) relatively, it can only be placed in left and right cylinder two ends, cause the very big (L 〉=5000mm) of complete machine length dimension with the roughly approaching requirement of tonnage level automobile wheel track.Most of brake test bench just because length dimension is very big, for convenient transportation, adopts split-type structural more, cause the user use in installation, maintenance extremely inconvenient, floor area is big, needs holding-down bolt fastening during installation, split left and right needs alignment.

Summary of the invention

The purpose of this utility model provides a kind of motor that improves motor-reductor transmission efficiency, dwindles the brake test bench volume-reductor middle drum reaction type brake test bench.

For achieving the above object, the utility model is taked following design plan: this motor-reductor middle drum reaction type brake test bench, its agent structure comprises the roller unit that is fixed on the frame, motor-reductor unit, the 3rd roller unit, the master of roller unit, auxiliary cylinder connects by the chain sprocket drive unit, the 3rd cylinder shaft end gear below is provided with the 3rd cylinder tachogenerator, there is support spring each cylinder below, on the appropriate location of avris plate photoelectric switch is arranged, establish force transducer on the transmission shaft between roller unit and motor-reductor unit, motor becomes whole with reductor by bolted connection, be placed in a roller unit left side, in the space of right cylinder the inner, the output shaft of motor stretches in the reductor, by gear transmission moment of torsion and power, the motor-output shaft of reductor unit and the main drum shaft of roller unit are to connecting.

Described reductor is made of two groups of high cylindric spiral gears of tooth face hardness.

The utility model has the advantages that: under the prerequisite of effective measured automobiles braking force, volume is little, unit frame, and no holding-down bolt, easy for installation, be convenient to maintenance, cost is lower.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the utility model embodiment 1 structural representation (front view)

Fig. 2 is the utility model embodiment 1 structural representation (birds-eye view)

Fig. 3 is the utility model embodiment 2 structural representations (front view)

Fig. 4 is the utility model embodiment 2 structural representations (birds-eye view)

The specific embodiment

Embodiment 1:

As shown in Figure 1 and Figure 2, the electrical axis and the cylinder axis coaxial arrangement of the utility model motor-reductor middle drum reaction type brake test bench.Its formation comprises: be fixed in the roller unit 5 on the frame 7, motor-reductor unit 3-4, the 3rd roller unit 6, the master of roller unit, auxiliary cylinder 501,502 (comprise sprocket wheel 10 by the chain sprocket drive unit, chain 1 etc.) connect, the 3rd cylinder 6 shaft end gears below is provided with the 3rd cylinder tachogenerator 8, there is support spring each cylinder below, photoelectric switch 9 is arranged on the appropriate location of avris plate, establish force transducer 2 on the transmission shaft between roller unit and motor-reductor unit, motor becomes whole with reductor by bolted connection, be placed in a roller unit left side, in the space of right cylinder the inner, the output shaft of motor stretches in the reductor, by gear transmission moment of torsion and power, the motor-output shaft of reductor unit and the main drum shaft of roller unit are to connecting.

In the present embodiment, left and right cylinder inner width is of a size of 680mm～1200mm, and width is 750mm～1200mm; Motor 3 volumes are little, length≤600mm, width≤300mm, highly≤420mm, rating horsepower 〉=11kw; Reductor 4 is to be made of high cylindric spiral gear of two groups of tooth face hardnesses etc., have failure-free intensity and enough moments of torsion, the transmission efficiency height, can reach 0.93, transmitting ratio i is 15～50: bearing with spherical outside surface 11 is bearing on the frame output shaft one end of motor (motor-reductor afterbody axle) by usheing to seat, the other end of output shaft stretches in the reductor, and by gear transmission moment of torsion and power, the output shaft of reductor is that its female splined shaft cooperates and transfer torque and power with the male splined shaft of cylinder.Force transducer 2 is force gauge, and is highly sensitive, and the value of braking force is exported by electric signal; Cylinder 5 is the scab cylinder, and the adhesion value height can reach more than 0.85, and the life-span is above 200,000 times; The 3rd cylinder 6 has up to the adhesion value more than 0.9, and form by the spraying of the special material of porous high hardness, when the test braking force, wheel will increase and " locking " with braking force gradually, theoretical and facts have proved that the linear differential that maximum braking force occurs between tire and cylinder is 12～15%, be called " slip ", the 3rd cylinder is by the motor tire driven rotary, and with the rotating speed of tire descend (this moment, braking force increased) slow down, its linear velocity equates with the linear velocity of tire all the time; The 3rd cylinder tachogenerator 8 is positioned at the 3rd cylinder shaft end gear below, its belongs to inductance type sensing that tests the speed, the gap that keeps 0.5～1.5mm between its gauge head and gear, the 3rd cylinder 20 impulse singlas of sensor output that whenever rotate a circle, instrument is with this signal sampling processing and compared with the linear velocity of cylinder at any time, in case reaching predetermined set value, " slip " promptly send shutdown signal, make the stalls simultaneously of two motors, thereby motor tire is unlikely by the cylinder butcher cuts when guaranteeing to record maximum braking force; Left and right sides electric motor starting then is after automobile enters checkout stand, the 3rd cylinder depress (about two depress simultaneously, assurance be automobile enter and non-artificial mistake press), block the photoelectric switch 9 that is located at the fixed position, thereby provide the electric motor starting signal; Sprocket wheel 11 is installed and major-minor cylinder axle head, and transmit the moment of torsion of motor output by chain 1: above-mentioned each parts all are installed on the frame 7.

Embodiment 2:

Shown in Fig. 3,4, the electrical axis and the cylinder axis of the utility model motor-reductor middle drum reaction type brake test bench are arranged in parallel.Its left and right cylinder inner width is of a size of 680mm～1200mm, width is 750mm～1200mm, motor-reductor is integrated in the all-in-onecase, volume is little, length≤700mm, width≤300mm, highly≤380mm, rating horsepower 1.2kw～5.0kw, reductor has failure-free intensity and enough moments of torsion, the transmission efficiency height can reach 0.93, and transmitting ratio I is 50～300; Force transducer is force gauge, and is highly sensitive, can reach more than 0.85, and the life-span is above 200,000 times; Photoelectric switch 9 is installed on limit cover plate side, and when automobile entered on the brake test bench, tire blocked photoelectric switch, and photoelectric switch then provides the electric motor starting signal, the stopping by the instrument fixed-time control of motor; Sprocket wheel is installed and major-minor cylinder axle head, transmits the moment of torsion of motor output by chain 1; Above-mentioned each parts all are installed on the frame 7.The startup of motor, shutdown principle are prior art.

Among above-mentioned two embodiment, the circuit control part of this brake test bench is prior art and can realizes, is not repeated herein.

Principle of work of the present utility model is: motor is through reductor groups of drive rolls driving automobile wheel revolutions, because motor-reductor is that floating support stretches out (or motor-reductor is that floating support stretches out on singly-bound axle and the frame at master rotor) on spline axle head and the tail bearing at cylinder, therefore, when wheel braking, counter-force between tire and the cylinder makes the retarder swing, dynamometry lever and dress tension-compression sensor thereon by the reductor front end are exported the value of this braking force by electric signal, after electric meter is handled, accurately show with pointer or digital displaying meter.

Claims

1, a kind of motor-reductor middle drum reaction type brake test bench, its agent structure comprises the roller unit that is fixed on the frame, motor-reductor unit, the 3rd roller unit, the master of roller unit, auxiliary cylinder connects by the chain sprocket drive unit, the 3rd cylinder shaft end gear below is provided with the 3rd cylinder tachogenerator, there is support spring each cylinder below, on the appropriate location of avris plate photoelectric switch is arranged, establish force transducer on the transmission shaft between roller unit and motor-reductor unit, it is characterized in that: motor becomes whole with reductor by bolted connection, be placed in a roller unit left side, in the space of right cylinder the inner, the output shaft of motor stretches in the reductor, by gear transmission moment of torsion and power, the motor-output shaft of reductor unit and the main drum shaft of roller unit are to connecting.

2, motor according to claim 1-reductor middle drum reaction type brake test bench, it is characterized in that: described reductor is made of two groups of high cylindric spiral gears of tooth face hardness.

3, motor according to claim 1-reductor middle drum reaction type brake test bench, it is characterized in that: described motor-reductor and drum shaft are to coaxial arrangement.

4, motor according to claim 1-reductor middle drum reaction type brake test bench, it is characterized in that: described motor-reductor and cylinder axis are arranged in parallel.

5, motor according to claim 3-reductor middle drum reaction type brake test bench, it is characterized in that: described motor rated power 〉=11kw, reductor transmitting ratio are 15～50.

6, motor according to claim 4-reductor middle drum reaction type brake test bench, it is characterized in that: described motor rated power is 1.2～5.0kw, the reductor transmission is 50～300.