CN114993546A

CN114993546A - Output force testing device of vacuum booster

Info

Publication number: CN114993546A
Application number: CN202210683694.8A
Authority: CN
Inventors: 王春生; 杨光强; 李贺; 杨波
Original assignee: FAW Bestune Car Co Ltd
Current assignee: FAW Bestune Car Co Ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-09-02
Also published as: WO2023240868A1

Abstract

The invention relates to a vacuum booster output force testing device, which comprises: sealed apron, rubber seal, fixed connection support, guide positioning support, the push rod connecting axle, force sensor, the pretension pull rod, inboard regulating block, outside regulating block, adopt sealed apron end face seal vacuum booster, test vacuum booster output with force sensor, guarantee vacuum booster test condition, the precision and the accuracy of assurance test, satisfy the needs of not unidimensional vacuum booster test, the flexibility is high, the commonality is strong, can effectively improve experimental preparation efficiency, can effectively practice thrift the test bench cost.

Description

Output force testing device of vacuum booster

Technical Field

The invention relates to the field of automobile part testing, in particular to a device for testing the output force of a vacuum booster.

Background

The vacuum booster is a component in a vehicle braking system, is a key actuating mechanism in a vehicle hydraulic servo braking system, and has the main function of amplifying pedal force of a driver during braking according to a certain proportion, so that the vehicle braking control is lighter and more reliable, and the intensity of force applied by the driver can be effectively reduced during braking. When the vacuum booster is developed and designed, an input-output force characteristic curve of the vacuum booster is a main technical index. In the human-vehicle interaction process, the brake pedal feeling teaching, the ergonomic evaluation, the brake performance, the brake reliability and the like are closely related to the characteristic curve of the vacuum booster, so that the analysis and the research of the characteristic curve are particularly important in the development of an automobile brake system.

When the vacuum booster rack tests, the problems that test data are inaccurate, test efficiency is reduced, test cost is increased, a test period is prolonged and the like are caused due to the fact that the test tool is poor in sealing, the preloading force is set inaccurately or the disassembly and assembly are inconvenient and the like.

Disclosure of Invention

The invention discloses a vacuum booster output force testing device aiming at the problems in the prior art, wherein the end face of a sealing cover plate is sealed, and a rubber sealing gasket is adopted, so that the vacuum booster testing working condition is further ensured, the preloading force is adjusted by a force sensor, and the vacuum booster output force testing device is high in precision, flexibility and universality.

The technical scheme adopted for realizing the invention is as follows: the utility model provides a vacuum booster output power testing arrangement which characterized by, it includes: the device comprises a sealing cover plate 1, a rubber sealing ring 2, a fixed connecting support 3, a guide positioning support 4, a push rod connecting shaft 5, a force sensor 6, a pre-tightening pull rod 7, an inner side adjusting block 8 and an outer side adjusting block 9, wherein two identical fixed connecting supports 3 are arranged between the sealing cover plate 1 and the guide positioning support 4, two ends of each identical fixed connecting support 3 are fixedly connected with the sealing cover plate 1 and the guide positioning support 4 respectively, the force sensor 6 is arranged in the middle of each identical fixed connecting support 3, a through hole is formed in the center of the sealing cover plate 1, a threaded hole is formed in the center of the guide positioning support 4, one end of the pre-tightening pull rod 7 is fixedly connected with the force sensor 6, the pre-tightening pull rod 7 penetrates through the central threaded hole of the guide positioning support 4, the pre-tightening pull rod 7 is in threaded connection with the guide positioning support 4, the inner side adjusting block 8 and the outer side adjusting block 9 are arranged on two sides of the guide positioning support 4 respectively, the inner side adjusting block 8 and the outer side adjusting block 9 are in threaded connection with the pre-tightening pull rod 7 respectively, the push rod connecting shaft 5 penetrates through a central through hole of the sealing cover plate 1, one end of the push rod connecting shaft 5 is fixedly connected with the force sensor 6, an internal thread hole is formed in the other end of the push rod connecting shaft 5, a boss is arranged on the outer side of the sealing cover plate 1, and a rubber sealing ring 2 is arranged on the boss on the outer side of the sealing cover plate 1.

Further, 1 central through-hole of sealed apron and push rod connecting axle 5 within a definite time set up self-lubricating bearing, 1 central through-hole of sealed apron and self-lubricating bearing between be interference fit, self-lubricating bearing and push rod connecting axle 5 between be clearance fit.

Furthermore, the force sensor 6 is a JLBS-M2 tension sensor.

Further, the rubber seal ring 2 is a stepped combination end face rubber seal ring.

The output force testing device of the vacuum booster has the beneficial effects that:

the utility model provides a vacuum booster output power testing arrangement, through sealed apron and rubber packing pad, sealing connection vacuum booster, realize fixed sealed vacuum booster, adopt force transducer to adjust preloading force, precision and accuracy of proof test satisfy the needs of not unidimensional vacuum booster test, the flexibility is high, the commonality is strong, can effectively improve experimental preparation efficiency, satisfy the test demand of different motorcycle types simultaneously, can effectively practice thrift the test bench cost.

Drawings

FIG. 1 is a three-dimensional schematic view of a vacuum booster output force testing device;

FIG. 2 is a schematic view of a vacuum booster output force test assembly station;

in the figure: 1. the vacuum booster comprises a sealing cover plate, 2 parts of a rubber sealing ring, 3 parts of a fixed connecting support, 4 parts of a guiding and positioning support, 5 parts of a push rod connecting shaft, 6 parts of a force sensor, 7 parts of a pre-tightening pull rod, 8 parts of an inner side adjusting block, 9 parts of an outer side adjusting block and 10 parts of a vacuum booster.

Detailed Description

The present invention will be described in further detail with reference to the accompanying fig. 1-2 and the specific embodiments described herein, which are provided for illustration only and are not intended to limit the invention.

As shown in fig. 1, a vacuum booster output force testing apparatus includes: the device comprises a sealing cover plate 1, a rubber sealing ring 2, a fixed connecting support 3, a guide positioning support 4, a push rod connecting shaft 5, a force sensor 6, a pre-tightening pull rod 7, an inner side adjusting block 8 and an outer side adjusting block 9, wherein two identical fixed connecting supports 3 are arranged between the sealing cover plate 1 and the guide positioning support 4, two ends of each identical fixed connecting support 3 are fixedly connected with the sealing cover plate 1 and the guide positioning support 4 respectively, the force sensor 6 is arranged in the middle of each identical fixed connecting support 3, a through hole is formed in the center of the sealing cover plate 1, a threaded hole is formed in the center of the guide positioning support 4, one end of the pre-tightening pull rod 7 is fixedly connected with the force sensor 6, the pre-tightening pull rod 7 penetrates through the central threaded hole of the guide positioning support 4, the pre-tightening pull rod 7 is in threaded connection with the guide positioning support 4, the inner side adjusting block 8 and the outer side adjusting block 9 are arranged on two sides of the guide positioning support 4 respectively, the inner side adjusting block 8 and the outer side adjusting block 9 are in threaded connection with the pre-tightening pull rod 7 respectively, the push rod connecting shaft 5 penetrates through a central through hole of the sealing cover plate 1, one end of the push rod connecting shaft 5 is fixedly connected with the force sensor 6, an internal thread hole is formed in the other end of the push rod connecting shaft 5, a boss is arranged on the outer side of the sealing cover plate 1, a rubber sealing ring 2 is arranged on the boss on the outer side of the sealing cover plate 1, a self-lubricating bearing is arranged between the central through hole of the sealing cover plate 1 and the push rod connecting shaft 5, the central through hole of the sealing cover plate 1 and the self-lubricating bearing are in interference fit, the self-lubricating bearing and the push rod connecting shaft 5 are in clearance fit, and the rubber sealing ring (2) is a step combination end face rubber sealing ring.

As shown in the attached figure 2, the vacuum booster 10 is connected with the rubber sealing gasket 2 through the sealing cover plate 1, the fixed connecting support 3 is connected with the sealing cover plate 1 through a bolt, the fixed connecting support 3 is connected with the guide positioning support 4 through a bolt, the sealing cover plate 1 is provided with a through hole, the push rod connecting shaft 5 can pass through the through hole and axially move, and meanwhile, the push rod connecting shaft 5 is provided with an internal thread hole and can be connected with an output push rod of the vacuum booster. Force transducer 6 is connected with push rod connecting axle 5 through screw-thread fit, and pretension pull rod 7 is connected with force transducer 6 through the screw thread, and inboard regulating block 8 processes the internal thread, and pretension pull rod 7 has external screw thread threaded connection with it, and outside regulating block 9 is in the guide bracket outside, is connected with pretension pull rod 7 through the internal thread.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a vacuum booster output power testing arrangement which characterized by, it includes: the device comprises a sealing cover plate (1), a rubber sealing ring (2), a fixed connecting support (3), a guiding and positioning support (4), a push rod connecting shaft (5), a force sensor (6), a pre-tightening pull rod (7), an inner side adjusting block (8) and an outer side adjusting block (9), wherein two identical fixed connecting supports (3) are arranged between the sealing cover plate (1) and the guiding and positioning support (4), two ends of each identical fixed connecting support (3) are fixedly connected with the sealing cover plate (1) and the guiding and positioning support (4) respectively, the force sensor (6) is arranged in the middle of each identical fixed connecting support (3), a through hole is arranged in the center of the sealing cover plate (1), a threaded hole is arranged in the center of the guiding and positioning support (4), one end of the pre-tightening pull rod (7) is fixedly connected with the force sensor (6), and the pre-tightening pull rod (7) penetrates through the central threaded hole of the guiding and positioning support (4), pretension pull rod (7) and guide positioning support (4) threaded connection set up inboard regulating block (8) and outside regulating block (9) respectively in guide positioning support (4) both sides, inboard regulating block (8) and outside regulating block (9) respectively with pretension pull rod (7) threaded connection, sealed apron (1) central through hole is passed in push rod connecting axle (5), push rod connecting axle (5) one end links firmly with force transducer (6) set up the internal thread hole in push rod connecting axle (5) another end, sealed apron (1) outside sets up the boss set up rubber seal (2) on sealed apron (1) outside boss.

2. The vacuum booster output force testing device according to claim 1, wherein a self-lubricating bearing is arranged between the central through hole of the sealing cover plate (1) and the push rod connecting shaft (5), the central through hole of the sealing cover plate (1) is in interference fit with the self-lubricating bearing, and the self-lubricating bearing is in clearance fit with the push rod connecting shaft (5).

3. The vacuum booster output force testing device as claimed in claim 1, wherein the force sensor (6) is a JLBS-M2 tension sensor.

4. The vacuum booster output force testing device as claimed in claim 1, wherein the rubber sealing ring (2) is a stepped combination end face rubber sealing ring.