CN210802423U

CN210802423U - Steering gear clearance measuring device and steering gear clearance measuring system

Info

Publication number: CN210802423U
Application number: CN201921578626.5U
Authority: CN
Inventors: 余欣
Original assignee: Baoneng Guangzhou Automobile Research Institute Co Ltd
Current assignee: Baoneng Guangzhou Automobile Research Institute Co Ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2020-06-19
Anticipated expiration: 2029-09-20

Abstract

The embodiment of the utility model provides a steering gear clearance measurement device and steering gear clearance measurement system. The steering gear clearance measuring device is used for measuring the clearance between a gear and a rack of a steering gear, and comprises: the measuring module is abutted against a pressing block of a steering gear to detect a displacement signal of the pressing block and send the displacement signal to the data collector, and the data collector is configured to receive the displacement signal and generate a detection signal in response to the displacement signal to detect a gap value between the gear and the rack. The embodiment of the utility model provides a steering gear clearance measuring device need not to dismantle the steering gear and just can realize measuring the clearance between the rack and pinion of steering gear.

Description

Steering gear clearance measuring device and steering gear clearance measuring system

Technical Field

The utility model relates to a test technical field especially relates to a steering gear clearance measurement device and steering gear clearance measurement system.

Background

The steering gear is a vital part in an automobile steering system, the performance of the steering gear directly affects the steering performance and driving comfort of the whole automobile, and the steering gear also has important influence on the safety of the automobile, so the performance of the steering gear generally has strict performance requirements. At present, the rack clearance of a steering gear is measured by adopting QCT29096-2014 standard, the measurement is mostly carried out in a laboratory or a production line when the quality of parts is ensured, generally, when the meshing clearance is more than 0.15mm millimeter, when a steering wheel is rapidly rotated, the steering gear can emit denuded abnormal sound to cause panic and complaint of customers, the steering gear of a common new vehicle cannot have abnormal sound, but the noise can be generated after the steering gear is worn after the vehicle is used for a period of time, at the moment, the steering gear is usually required to be disassembled to return to a factory for clearance measurement and analysis, the efficiency is lower, and the recurrence rate is not high.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a steering gear clearance measuring device need not to dismantle the steering gear, just can realize measuring the clearance between the gear of steering gear and the rack.

An embodiment of the utility model provides a steering gear clearance measuring device for measure the clearance between the gear of steering gear and the rack, the gear with form the transmission cooperation between the rack, the briquetting of steering gear is fixed in the rack, steering gear clearance measuring device includes:

the measuring module is electrically connected with the data collector, the measuring module abuts against the pressing block to detect a displacement signal of the pressing block and sends the displacement signal to the data collector, and the data collector is configured to receive the displacement signal and generate a detection signal in response to the displacement signal to detect a gap value between the gear and the rack.

In some embodiments, the measurement module includes a micrometer and a sensor that are electrically connected, the micrometer includes a probe, the probe abuts against the pressing block, the micrometer is used for measuring the displacement generated by the pressing block, and the sensor generates a displacement signal according to the displacement of the pressing block detected by the micrometer.

Further, the steering gear clearance measuring device further comprises a protection piece, wherein the protection piece is sleeved on the measuring module, and is provided with an avoiding hole used for exposing the probe.

Further, the probe is a retractable probe.

Further, the steering gear clearance measuring device further comprises a connecting assembly, wherein the connecting assembly is at least partially sleeved outside the probe, and the connecting assembly is connected between the shell and the sensor.

Still further, coupling assembling includes first nut and second nut, first nut has the external screw thread, the second nut has the internal thread, form the cooperation between the external screw thread of first nut with the internal thread of second nut, first nut fixed connection in the probe, second nut fixed connection in the sensor.

Furthermore, the steering gear clearance measuring device further comprises a positioning spring, the positioning spring is located in the shell, the positioning spring is sleeved on the outer side of the probe, and the positioning spring is used for positioning the probe.

In other embodiments, the steering gear clearance measurement device further comprises a power supply module, and the power supply module is configured to supply power to the data collector.

In still other embodiments, the clearance between the gear and the rack ranges from 0 to 0.12 mm.

The embodiment of the utility model provides a steering gear clearance measuring device supports the briquetting of holding in the steering gear through with measuring module to detect the displacement signal of briquetting, then with displacement signal transmission to data collection station, data collection station receives the displacement signal after, detects the clearance value between the gear of steering gear and the rack according to the displacement signal, thereby can be under the condition of not dismantling the steering gear, realize the measurement to the clearance value of gear and rack. The technical scheme of the utility model adopt the mode that measuring device and data collection station combined together to measure, when rotating the steering wheel, can effectual record rack and pinion's meshing clearance value, can judge for unusual wearing and tearing when the clearance value appears obviously beating, avoided the blindness nature of subjective judgement, and improved for follow-up part and provided the foundation.

The embodiment of the utility model provides a still provide a steering gear clearance measurement system, steering gear clearance measurement system includes steering gear and the steering gear clearance measurement device that the above arbitrary embodiment provided, steering gear clearance measurement device is fixed in the steering gear, in order to measure clearance between the gear and the rack of steering gear.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a steering gear clearance measuring device for measuring the clearance of a steering gear, according to an embodiment of the present invention.

Fig. 2 is a partial structural view of the steering gear clearance measuring apparatus of fig. 1 for measuring the clearance of the steering gear.

Fig. 3 is a block diagram of a structure of a steering gear clearance measuring device according to an embodiment of the present invention.

FIG. 4 is a graphical representation of the amplitude variation of a normal steering gear and a noisy steering gear in operation.

Fig. 5 is another partial structural view of the steering gear clearance measuring apparatus of fig. 1 for measuring the clearance of the steering gear.

Fig. 6 is a schematic view of another partial structure of the steering gear clearance measuring device of fig. 1 for measuring the clearance of the steering gear.

Fig. 7 is a schematic structural diagram of another steering gear clearance measuring device for measuring the clearance of a steering gear according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of another steering gear clearance measuring device for measuring the clearance of a steering gear according to an embodiment of the present invention.

Fig. 9 is another structural block diagram of the steering gear clearance measuring device according to the embodiment of the present invention for measuring the clearance between the rack and the pinion.

Fig. 10 is a schematic structural diagram of another steering gear clearance measuring device for measuring the clearance of a steering gear according to an embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a steering gear clearance measurement system applied to a vehicle according to an embodiment of the present invention

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, 2 and 3 in general, a steering gear clearance measuring device 10 according to an embodiment of the present invention is configured to measure a clearance between a gear 200 and a rack 300 of a steering gear J, the gear 200 and the rack 300 form a transmission fit therebetween, a pressing block 400 of the steering gear J is fixed to the rack 300, the steering gear clearance measuring device 10 includes a measuring module 500 and a data collector 600, the measuring module 500 is electrically connected to the data collector 600, the measuring module 500 abuts against the pressing block 400 to detect a displacement signal of the pressing block 400, and transmits the displacement signal to the data collector 600, and the data collector 600 is configured to receive the displacement signal and generate a detection signal in response to the displacement signal to detect a clearance value between the gear 200 and the rack 300.

The steering gear J further comprises a shell 100, the shell 100 forms an external protection structure of the steering gear J, and the gear 200, the rack 300, the pressing block 400, the measuring module 500 and the data collector 600 are all fixed on the shell 100. The shell 100, the gear 200 connected to the shell 100, the rack 300 and the press block 400 are core components of an automobile steering system, and the steering gear J has the following basic requirements: accurate and lightweight steering control is provided while the turning angle range of the steering wheel is not allowed to be excessively large. This requires that the free travel of the steering gear J (caused by the play between the transmission parts) be as small as possible, that the transmission ratio be appropriate, and that the mechanical efficiency be high when the driver is actively turning the steering wheel. At present, a gear 200 and rack 300 type steering gear is commonly used for passenger cars, the transmission mode is that a gear shaft is meshed with the rack 300, and the rotation of the gear shaft is converted into the axial movement of the rack 300. The steering gear J of the embodiment of the present invention may be a gear shaft engaged with the rack 300, and the gear 200 may be a gear shaft.

The housing 100 is an external protection structure of the steering gear J, and constitutes a support frame of the steering gear J for connecting other structures of the steering gear J, and the steering gear gap measuring device 10 is also connected to the housing 10. The gear 200 and the rack 300 form transmission fit, the pressing block 400 is located on one side, away from the gear 200, of the rack 300, the pressing block 400 is fixed on the rack 300, the gap value between the gear 200 and the rack 300 can be obtained by detecting the displacement change of the pressing block 400, the measuring module 500 abuts against the pressing block 400, the pressing block 400 is fixed on the rack 300, the displacement change of the gear 200 and the rack 300 can be obtained by detecting the displacement of the pressing block 400, and then a displacement signal is generated, after the displacement signal is received by the data acquisition device 600, the data acquisition device 600 can generate a detection signal according to the displacement signal to detect the gap value between the gear 200 and the rack 300, experience collection or energy conversion can be performed according to the fluctuation amount of the gap value between the gear 200 and the rack 300, and the abrasion loss of the gear 200 and the rack. The measuring module 500 may be a contact sensor, a non-contact sensor, an electronic sensor, or a physical sensor.

Wherein, the clearance range of the gear 200 and the rack 300 is 0-0.12 mm. Specifically, the 10-gear 200 rack 300 of the steering gear J includes a common section where the torque of the gear 200 of the steering gear J is relatively small and the vehicle is in a normal straight-line driving stage, and a large turning section where the torque of the gear 200 of the steering gear J is relatively large and the vehicle is in a turning stage. The clearance range of the gear 200 and the rack 300 of the common section is 0-0.08mm, and the clearance range of the gear 200 and the rack 300 of the large turning section is 0-0.12 mm.

Further, referring to fig. 4, fig. 4 is a graph illustrating a variation of a rack and pinion clearance between a normal steering gear J and a noisy steering gear J. As can be seen from the figure, the fluctuation amount and the variation amount of the gear-rack clearance value of the steering gear J with noise are obviously different from those of the normal steering gear J, and the clearance value between the gear 200 and the rack 300 acquired by the data acquisition unit 600 is used as a judgment basis to further obtain whether the steering gear J is in a normal working state, so that the steering gear J does not need to be disassembled for testing, and the measurement of the clearance value of the gear-rack steering gear J is visualized.

The embodiment of the utility model provides a steering gear clearance measuring device 10 supports through with measuring module 500 and holds in briquetting 400 to detect the displacement signal of briquetting 400, then with displacement signal transmission to data collection station 600, data collection station 600 receives the displacement signal after, detects the clearance value between gear 200 and the rack 300 according to the displacement signal, thereby can be under the condition of not dismantling steering gear J, realize the measurement to the clearance value of gear 200 and rack 300. The technical scheme of the utility model adopt the mode that measuring device and data collection station 600 combined together to measure, when rotating the steering wheel, can effectual record gear 200 rack 300's meshing clearance value, can judge for unusual wearing and tearing when the clearance value appears obviously beating, avoided the blindness nature of subjective judgement, and improved for follow-up part and provided the foundation.

It should be noted that the utility model provides a measuring module 500 and data collection station 600 are current equipment, the utility model discloses do not involve improving measuring module 500 and data collection station 600 itself, and measuring module 500 can be used for acquireing displacement signal, and data collection station 600 can be used for obtaining the clearance value of gear 200 rack 300 according to displacement signal and be prior art.

Referring to fig. 5, the measuring module 500 includes a micrometer 510 and a sensor 520 electrically connected to each other, the micrometer 510 includes a probe 511, the probe 511 abuts against the press block 400, the micrometer 510 is configured to measure a displacement generated by the press block 400, and the sensor 520 generates a displacement signal according to the displacement of the press block 400 detected by the micrometer 510.

The micrometer 510 may be an electronic micrometer 510, and the micrometer 510 has high detection accuracy and can be used for measuring the micro displacement of an object in real time. The micrometer 510 is a contact type physical sensor 520, and has a probe 511, and the probe 511 is brought into contact with the pressure block 400, so that the displacement of the pressure block 400 can be detected in real time. Since the pressing block 400 is fixed to the rack 300, the amount of gap fluctuation between the rack 300 and the gear 200 can be detected. The sensor 520 is electrically connected with the micrometer 510 through a signal wire, the micrometer 510 transmits the displacement value of the pressing block 400 detected in real time to the sensor 520 through the signal wire, and the sensor 520 generates a displacement signal according to the displacement of the pressing block 400 detected by the micrometer 510. The sensor 520 is a sensor 520 with a signal transmission function, and the sensor 520 can transmit the acquired displacement signal to the data acquisition unit 600.

In one embodiment, the probe 511 is a retractable probe 511, so that the probe can be used with different steering gears J, and the application range of the steering gears J is enlarged. The probe 511 of the micrometer 510 measures the jumping amount of the pressure block 400 to obtain and judge the clearance value of the rack 300 of the gear 200, and experience collection or energy conversion can be performed according to the clearance value to check the abrasion loss of the rack 300 of the gear 200, find out the true cause of abnormal sound, and provide data support for the maintenance of the steering gear clearance measuring device 10.

With continued reference to fig. 6, the steering clearance measuring apparatus 10 further includes a protection member 650, the protection member 650 is sleeved on the measuring module 500, the protection member 650 has an avoiding hole 650a, and the avoiding hole 650a is used for exposing the probe 511.

Wherein, the protection part 650 may be a waterproof jacket, and the protection part 650 is located at the outer side of the measurement module 500, and plays a role in packaging and protecting the measurement module 500. The probe 511 of the micrometer 510 is exposed through an escape hole 650a of the guard 650 so that the micrometer 510 abuts against the press block 400, and the guard 650 serves to protect the measuring die from water and physical impact.

Referring to fig. 7, the steering clearance measuring apparatus 10 further includes a connecting member 700, the connecting member 700 is at least partially sleeved outside the probe 511, and the connecting member 700 is connected between the housing 100 and the sensor 520.

Wherein, the connection assembly 700 is used for fixedly connecting the measurement module 500 to the housing 100. Specifically, the connection assembly 700 is sleeved on the outer side of the probe 511 and used for limiting the probe 511, and the connection assembly 700 connects the sensor 520 to the housing 100. The connection assembly 700 may be a screw, a rivet, or even other welds.

With continued reference to fig. 8, the connecting assembly 700 includes a first nut 710 and a second nut 720, the first nut 710 has an external thread, the second nut 720 has an internal thread, a fit is formed between the external thread of the first nut 710 and the internal thread of the second nut 720, the first nut 710 is fixedly connected to the probe 511, and the second nut 720 is fixedly connected to the sensor 520.

Specifically, the first nut 710 is at least partially located inside the second nut 720, the external thread of the first nut 710 is matched with the internal nut of the second nut 720, the first nut 710 is fixed outside the probe 511, specifically, the first nut 710 has a receiving hole, the probe 511 is located in the receiving hole, the probe 511 and the receiving hole of the first nut 710 are in interference fit, the second nut 720 is fixedly connected to the sensor 520, the probe 511 and the sensor 520 can be fixed together by the mutual matching of the first nut 710 and the second nut 720, and the second nut 720 is further used for fixing the casing 100 of the steering gear J, so that the probe 511, the sensor 520 and the casing 100 are fixedly connected.

With continued reference to fig. 9, the steering clearance measuring apparatus 10 further includes a power supply module 750, wherein the power supply module 750 is configured to supply power to the data collector 600.

The power supply module 750 may be a power supply device, and is configured to supply power to the data collector 600, so that the data collector 600 can stably obtain the displacement signal from the measurement module 500, and obtain the gap value between the gear 200 and the rack 300 according to the displacement signal.

Referring to fig. 10, the steering gear clearance measuring device 10 further includes a positioning spring 800, the positioning spring 800 is located in the housing 100, the positioning spring 800 is sleeved outside the probe 511, and the positioning spring 800 is used for positioning the probe 511.

Specifically, the housing 100 has a mounting hole 100a, the mounting hole 100a is used for mounting and fixing the positioning spring 800, the pressing block 400 is disposed opposite to the mounting hole 100a, the probe 511 is surrounded by the positioning spring 800, and the positioning spring 800 is used for limiting the probe 511, so as to prevent the position of the probe 511 from deviating under the action of the pressing block 400, which results in an inaccurate measurement of the gap value of the rack 300 of the gear 200.

Referring to fig. 11, the present invention further provides a steering gear clearance measurement system 11, including a steering gear J and the steering gear clearance measurement device 10 provided in any of the above embodiments, wherein the steering gear clearance measurement device 10 is fixed to the steering gear J to measure a clearance between a gear 200 and a rack 300 of the steering gear J.

The steering gear clearance measuring system 11 provided by the embodiment of the application is applied to a vehicle 1, wherein the vehicle 1 can be any automobile with running and steering functions, the vehicle 1 can include the steering gear J provided by the above embodiment, of course, the vehicle 1 further includes related vehicle 1 parts such as a chassis 20, and the steering gear clearance measuring system 11 is fixed on the chassis 20.

The embodiments of the present invention have been described in detail, and the principles and embodiments of the present invention have been explained herein using specific embodiments, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims

1. A steering gear clearance measuring device for measuring a clearance between a pinion and a rack of a steering gear, the pinion and the rack forming a drive fit therebetween, a pressure block of the steering gear being fixed to the rack, the steering gear clearance measuring device comprising:

2. The steering gear clearance measuring device of claim 1, wherein the measuring module comprises a micrometer and a sensor which are electrically connected, the micrometer comprises a probe, the probe abuts against the pressing block, the micrometer is used for measuring displacement generated by the pressing block, and the sensor generates a displacement signal according to the displacement of the pressing block detected by the micrometer.

3. The steering clearance measuring device according to claim 2, further comprising a guard member, the guard member being fitted over the measuring module, the guard member having an escape hole for exposing the probe.

4. A diverter gap measuring device as defined in claim 2 or 3, wherein said probe is a retractable probe.

5. The steering clearance measuring device of claim 2, further comprising a coupling assembly at least partially disposed outside the probe, the coupling assembly coupled between the housing of the steering gear and the sensor.

6. The steering clearance measuring device of claim 5, wherein the coupling assembly includes a first nut having external threads and a second nut having internal threads, a fit being formed between the external threads of the first nut and the internal threads of the second nut, the first nut being fixedly coupled to the probe and the second nut being fixedly coupled to the sensor.

7. The steering gear clearance measuring device of claim 2, further comprising a positioning spring, wherein the positioning spring is located in a housing of the steering gear and sleeved outside the probe, and the positioning spring is used for positioning the probe.

8. The steering gear clearance measuring device of claim 1, further comprising a power module for supplying power to the data collector.

9. The steering clearance measuring apparatus of claim 1, wherein the clearance between the gear and the rack ranges from 0 to 0.12 mm.

10. A steering clearance measuring system comprising a steering gear and a steering clearance measuring device according to any one of claims 1 to 9, the steering clearance measuring device being fixed to the steering gear to measure a clearance between a pinion and a rack of the steering gear.