CN213580116U

CN213580116U - Counter-force type brake test bed capable of improving measurement precision

Info

Publication number: CN213580116U
Application number: CN202022592673.4U
Authority: CN
Inventors: 邓立宏
Original assignee: Nantong Jiwei Electromechanical Equipment Co ltd
Current assignee: Nantong Jiwei Electromechanical Equipment Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-06-29
Anticipated expiration: 2030-11-11

Abstract

The utility model discloses an improve measurement accuracy's reaction formula braking test bench, by the stage body frame, the bearing frame, gear motor, brake force sensor, the main cylinder and the auxiliary drum of binder constitute, wherein gear motor, main cylinder and auxiliary drum adorn in the stage body frame through the bearing frame separately, gear motor attaches and attaches in the main cylinder outer end and meets and orders about main cylinder rotation or stall, brake force sensor connects on gear motor's shell, and sensing output signal and gear motor's drive signal insert and mutual from the electric cabinet, its innovation characteristic is that this gear motor keeps away from between one end shell of output shaft and the stage body frame to connect through the flexible assembly dress and link to each other, gear motor keeps apart the vibration towards the stage body frame. Use the technical scheme of the utility model, through mounting structure's improvement, utilize flexible assembly to absorb gear motor's vibrations, reliably restrained brake force sensor's signal noise to be favorable to improving the measurement accuracy of brake force.

Description

Counter-force type brake test bed capable of improving measurement precision

Technical Field

The utility model relates to a motor vehicle detection device especially relates to an improve measurement accuracy's reaction formula brake test platform.

Background

With the continuous development of the automobile manufacturing industry, during the process of vehicle off-line or periodic annual inspection, the braking force of the tire needs to be detected and tested to judge whether the on-road condition and the safety are met. As one of the most important items in motor vehicle safety inspection, it has been the focus of attention of the automobile and vehicle inspection industries in the world.

The braking performance detection of the automobile comprises two methods of road test and bench test, the braking force detection bench of the automobile is the core detection equipment for the safety performance detection of the automobile, wherein the application is widely that the double-roller reaction type braking detection bench is used for placing a wheel to be detected on two rollers, and the rollers are driven by a motor to drive the wheel to rotate at a low speed so as to simulate the closest state of the wheel running on a road surface. And after the rotating speed of the wheels is stable, the driver steps on the brake pedal. The wheel starts to decelerate under the action of the friction torque of the brake. At this time, the motor-driven drum applies a braking force to the circumferential edge of the tire of the wheel in the tangential direction to overcome the brake friction torque and maintain the wheel to continue rotating. At the same time, the tire exerts a reaction force of the same value as the braking force direction on the tangential direction of the drum surface. Under the action of reaction moment, the speed reducer shell and the force measuring lever swing together towards the opposite direction of the rotation of the roller, the force is equal to the braking force of the roller to the wheel, and is transmitted to the force measuring scale through the floating motor speed reducer body and the force measuring lever and is indicated by an indicator of the force measuring scale. The force measuring lever and the force measuring scale are defined as sensor components for measuring the braking force, and the sensor components are used for tracking and detecting the force, so that the braking force which can be generated by the wheel can be reflected, and the purpose of detection is achieved.

However, most of the existing test beds with low load adopt worm and gear speed reducing motors, the speed reducing motors not only output small torque, but also have objective influence on the measurement accuracy of the sensor due to vibration generated in the starting and running processes of the motors.

Disclosure of Invention

The utility model aims at providing an improve measurement accuracy's reaction formula brake test platform to eliminate gear motor itself and shake the influence to detecting the precision.

The utility model provides a technical solution who realizes above-mentioned purpose is, a improve measurement accuracy's reaction formula braking test bench, by stage body frame, the bearing frame, gear motor, brake force sensor, the main cylinder and the auxiliary drum of sand sticking constitute, wherein gear motor, main cylinder and auxiliary drum are adorned certainly in stage body frame through the bearing frame separately, gear motor attaches and attaches in the main cylinder outer end and meets and orders about the main cylinder and rotate or stall, brake force sensor connects on gear motor's shell integratively, and the drive signal access of sensing output signal and gear motor is from the electronic control box alternately, its characterized in that: the shell at one end of the speed reducing motor, which is far away from the output shaft, is connected with the platform body framework through a flexible assembly in an assembling mode, and the speed reducing motor isolates vibration towards the platform body framework.

The counter-force type brake test bed for improving the measurement accuracy further comprises a flexible assembly, a positioning bottom plate, a shock absorption spring and a shock absorption plate, wherein the positioning bottom plate is fixedly connected to the bottom side of the bed frame and integrally extends upwards to form two positioning columns, the shock absorption spring is sleeved on each positioning column, two ends of the shock absorption plate are perforated and transversely sleeved on the two positioning columns to press against the shock absorption spring, and the top ends of the positioning columns are sleeved with gaskets and nuts, so that the upper limit of the stroke of the shock absorption plate is limited to the bottoms of the gaskets; the shell at one end of the speed reducing motor far away from the output shaft is lapped on the surface of the middle part of the damping plate.

The counter-force type brake test bed for improving the measurement accuracy further comprises a flexible assembly and a positioning base plate, wherein the flexible assembly is composed of the positioning base plate and an elastic nylon woven tape, the positioning base plate is fixedly connected to the bottom side of the bed body frame and upwards extends to form two positioning columns, and two ends of the elastic nylon woven tape are wound and positioned at the top ends of the positioning columns; the shell at one end of the speed reducing motor, which is far away from the output shaft, is lapped on the surface of the middle part of the elastic nylon braid.

The counter-force type brake test bed for improving the measurement accuracy further comprises a flexible assembly and a counter-force type brake test bed, wherein the flexible assembly is composed of more than one elastic nylon woven tape, and two ends of each elastic nylon woven tape are wound and positioned on a fastening column or a hanging hole arranged on the top side of the bed body frame; the shell at one end of the speed reducing motor, which is far away from the output shaft, is lapped on the surface of the middle part of the woven mesh formed by the elastic nylon woven tape.

According to the counter-force type brake test bed for improving the measurement accuracy, further, a third roller which is lifted in a self-resetting mode and abutted against the wheel is arranged in the space between the main roller and the auxiliary roller, and the third roller is provided with a rotating speed sensor with a signal connected into the electric cabinet.

Use the utility model discloses a reaction formula brake test platform possesses substantive characteristics and progressive: through the improvement of the mounting structure, the flexible assembly is utilized to absorb the vibration of the speed reducing motor, and the signal noise of the braking force sensor is reliably inhibited, so that the improvement of the measurement accuracy of the braking force is facilitated.

Drawings

Fig. 1 is a detailed structure schematic diagram of a preferred embodiment of the reaction type brake test bed of the present invention.

Fig. 2 is a partial schematic view of fig. 1 from another perspective.

Detailed Description

The following detailed description is made of specific embodiments of the present invention with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and grasp, and thus make a clearer definition of the protection scope of the present invention.

The automobile braking performance detection equipment is developed on the basis of technology introduction, conforms to the design and specification diversification of continuously-changed motor vehicles, and continuously breaks through and improves the functions and performance of the equipment. The performance indexes and the technical grades can be divided into simple manual type, semi-automatic and full-automatic networking and other forms.

In pursuit the braking force testing result of higher accuracy, the utility model discloses the designer carries out the degree of depth research to the process that traditional reaction formula braking test platform participated in actual inspection, and the analysis causes the reason of result poor stability, relies on design experience, and the innovation has provided a technical improvement scheme to promote precision and stability that braking force detected, make the test bench wide application in units such as limited passenger station in place, commodity circulation freight transportation station, auto repair shop, automobile inspection station, station example examine the platform, 4S shop dimension guarantor department.

The counter-force type brake test bed for improving the measurement accuracy as shown in fig. 1 is composed of a bed frame 1, a bearing seat 2, a speed reducing motor 3, a braking force sensor (not shown), a sand-adhered main drum 41 and an auxiliary drum 42, wherein the speed reducing motor 3, the main drum 41 and the auxiliary drum 42 are respectively fixed in the bed frame through the bearing seat, the speed reducing motor 3 is arranged at the outer end of the main drum 41 and connected to drive the main drum 41 to rotate or stop rotating, the braking force sensor is integrally connected to a shell of the speed reducing motor, and a sensing output signal and a driving signal of the speed reducing motor are connected to and interacted with a power control box (not shown). As the main characteristics of technical improvement, the shell at one end of the speed reducing motor 3 far away from the output shaft is connected with the platform body frame through the flexible assembly 5, and the speed reducing motor 3 isolates vibration towards the platform body frame 1.

Intuitively, although not shown in the drawings, the double-cylinder reaction type brake test bed is highly popular and practical in the industry. The main drum 41 is connected with the auxiliary drum 42 in a transmission way, and the main drum is driven by the kinetic energy output by the speed reducing motor. As can be seen from the figure, the test bed can independently detect the left wheel and the right wheel, so that a set of speed reducing motor, a braking force sensor, a double roller and other components with the same specification and type are independently configured corresponding to each side wheel, and are connected into an electric cabinet through a bus to be independently controlled and subjected to signal interaction.

Focusing on the innovative technical improvement of the utility model, in order to absorb the vibration noise of the speed reduction motor, as shown in fig. 2, the flexible component 5 is composed of a positioning bottom plate 51, a shock-absorbing spring 53 and a shock-absorbing plate 52, wherein the positioning bottom plate 51 is fixedly connected to the bottom side of the platform frame 1 and is integrally extended upwards to form two positioning columns, each positioning column is sleeved with the shock-absorbing spring 53, two ends of the shock-absorbing plate 52 are perforated and are transversely sleeved on the two positioning columns to press against the shock-absorbing spring 53, and the top end of the positioning column is sleeved with a gasket and a nut 54, so that the upper limit of the stroke of the shock-absorbing plate 52 is limited to the bottom of the gasket; the end of the speed reducing motor 3 far away from the output shaft is covered on the surface of the middle part of the damping plate 52. Through the flexible assembly, the damping plate 52 can be always tightly attached to the motor shell to provide supporting force and synchronously swing slightly; therefore, the noise influence of the vibration of the speed reducing motor on the braking force detection result is counteracted.

In addition to the above preferred embodiment of the flexible assembly, it may also be composed of a positioning bottom plate and an elastic nylon woven belt (not shown), wherein the positioning bottom plate is fixed on the bottom side of the platform frame and extends upwards to form two positioning posts, and two ends of the elastic nylon woven belt are wound and positioned on the top ends of the positioning posts; the shell at one end of the speed reducing motor, which is far away from the output shaft, is lapped on the surface of the middle part of the elastic nylon braid.

Or the flexible component is composed of more than one elastic nylon woven tape (not shown), and two ends of each elastic nylon woven tape are wound and positioned on a fastening column or a hanging hole arranged at the top side of the platform body frame; the shell at one end of the speed reducing motor, which is far away from the output shaft, is lapped on the surface of the middle part of the woven mesh formed by the elastic nylon woven tape.

In addition, the utility model discloses this counter-force type brake test bench is equipped with the third cylinder 43 from reset lifting and butt wheel in the space between main cylinder and the auxiliary drum, and third cylinder 43 still is equipped with the tachometric transducer of signal access electric cabinet to the real-time speed of a motor vehicle of obtaining the wheel tire, and regard as the reference data of an aspect of the experimental conclusion of braking.

In summary, as will be understood from the detailed description of the reaction type brake test bed of the present invention in conjunction with the illustrated embodiments, the technical solution thereof is significantly improved: through the improvement of the mounting structure, the flexible assembly is utilized to absorb the vibration of the speed reducing motor, and the signal noise of the braking force sensor is reliably inhibited, so that the improvement of the measurement accuracy of the braking force is facilitated.

In addition to the above embodiments, the present invention may have other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of the present invention.

Claims

1. The utility model provides an improve measurement accuracy's reaction formula braking test bench, by the stage body frame, the bearing frame, gear motor, braking force sensor, the main cylinder and the vice cylinder of sand-sticking constitute, wherein gear motor, main cylinder and vice cylinder are adorned in the stage body frame through the bearing frame respectively, gear motor dress is adorned in main cylinder outer end and is met and orders about main cylinder rotation or stall, braking force sensor connects integratively on gear motor's shell, and sensing output signal and gear motor's drive signal access and interactive from the electronic control box, its characterized in that: the shell at one end of the speed reducing motor, which is far away from the output shaft, is connected with the platform body framework through a flexible assembly in an assembling mode, and the speed reducing motor isolates vibration towards the platform body framework.

2. The counter-force type brake test bench for improving the measurement accuracy according to claim 1, wherein: the flexible assembly is composed of a positioning bottom plate, shock absorption springs and a shock absorption plate, wherein the positioning bottom plate is fixedly connected to the bottom side of the platform body frame and upwards extends integrally to form two positioning columns, each positioning column is sleeved with the shock absorption spring, two ends of the shock absorption plate are perforated and transversely sleeved on the two positioning columns to press against the shock absorption springs, and the top ends of the positioning columns are sleeved with gaskets and nuts, so that the upper limit of the stroke of the shock absorption plate is limited to the bottoms of the gaskets; the shell at one end of the speed reducing motor far away from the output shaft is lapped on the surface of the middle part of the damping plate.

3. The counter-force type brake test bench for improving the measurement accuracy according to claim 1, wherein: the flexible assembly consists of a positioning bottom plate and an elastic nylon woven belt, wherein the positioning bottom plate is fixedly connected to the bottom side of the platform body frame and upwards extends to form two positioning columns, and two ends of the elastic nylon woven belt are wound and positioned at the top ends of the positioning columns; the shell at one end of the speed reducing motor, which is far away from the output shaft, is lapped on the surface of the middle part of the elastic nylon braid.

4. The counter-force type brake test bench for improving the measurement accuracy according to claim 1, wherein: the flexible assembly is composed of more than one elastic nylon woven tape, and two ends of each elastic nylon woven tape are wound and positioned on a fastening column or a hanging hole arranged on the top side of the platform body frame; the shell at one end of the speed reducing motor, which is far away from the output shaft, is lapped on the surface of the middle part of the woven mesh formed by the elastic nylon woven tape.

5. The counter-force type brake test bench for improving the measurement accuracy according to claim 1, wherein: and a third roller which is lifted from a reset position and is abutted against the wheels is arranged in the space between the main roller and the auxiliary roller, and the third roller is provided with a rotating speed sensor with a signal connected into the electric cabinet.