CN215832657U

CN215832657U - Tyre radial runout testing device

Info

Publication number: CN215832657U
Application number: CN202122141809.4U
Authority: CN
Inventors: 贾凯; 徐庆林; 卢赟; 叶雄; 范传帅; 程海龙; 丁卓
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-02-15
Anticipated expiration: 2031-09-06

Abstract

The application relates to a radial run-out testing device for a tire, which comprises an adjusting bracket and a laser displacement sensor; the adjusting bracket includes: the supporting seat is arranged on the test bed; the fixing plate is fixedly connected to one side of the supporting seat; and the locking assembly is used for locking the fixing plate on the supporting seat. Locking Assembly includes adjusting screw and lock nut, and the supporting seat is equipped with the adjustment tank along the first direction, and adjusting screw one end is fixed in the fixed plate, and adjusting screw's the other end is worn out from the adjustment tank to can follow first direction and remove and make rotary motion around adjusting screw self axis in the adjustment tank, lock nut threaded connection stretches out the one end of adjustment tank in adjusting screw, so that the relative supporting seat of fixed plate is fixed. The tire radial run-out testing device is simple to operate, easy to control and adjust, and capable of adjusting laser angles and distances according to different positions of different tires, and testing accuracy and efficiency are improved.

Description

Tyre radial runout testing device

Technical Field

The application relates to the technical field of vehicle tire jumping detection, in particular to a radial jumping testing device for a tire.

Background

The tire is an important component of an automobile, and the radial runout of the tire is one of important indexes for evaluating the NVH (noise, vibration and harshness) of the whole automobile. Because the result of the laser displacement test is more accurate and reliable, the laser displacement test gradually replaces the dial indicator test and becomes a main tire radial run-out test mode, but at present, no tire radial run-out test device special for the laser displacement test is available.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a tire radial run-out testing device suitable for laser displacement testing.

According to one aspect of the application, a tire radial run-out testing device is provided, and comprises an adjusting bracket and a laser displacement sensor;

the adjusting bracket includes:

the supporting seat is arranged on the test bed;

the fixing plate is fixedly connected to one side of the supporting seat; and

the laser displacement sensor is arranged on one side, far away from the supporting seat, of the fixing plate, and the locking assembly is used for locking the fixing plate on the supporting seat;

the locking assembly comprises an adjusting screw rod and a locking nut, the supporting seat is provided with an adjusting groove along a first direction, one end of the adjusting screw rod is fixed on the fixing plate, the other end of the adjusting screw rod penetrates out of the adjusting groove to be capable of being along the first direction, the adjusting screw rod moves in the adjusting groove and winds around the axis of the adjusting screw rod, and the locking nut is in threaded connection with the adjusting screw rod, extends out of one end of the adjusting groove, so that the fixing plate is fixed relative to the supporting seat.

In one embodiment, the lock nut comprises a main body part and an operation part connected with the main body part;

the operating part is perpendicular to the axis of the adjusting screw.

In one embodiment, the main body portion has a regular polygon cross section;

the operation portion is fixed to one side surface of the main body portion in the circumferential direction, and is configured to extend lengthwise in a plate-like manner in a direction away from the main body portion.

In one embodiment, the adjusting bracket further comprises a base fixedly connected to the test bed;

the supporting seat is fixedly connected with the base and is perpendicular to the base.

In one embodiment, the base is fixed on the test bed through bolts.

In one embodiment, the first direction is perpendicular to the base.

In one embodiment, the adjustment bracket further comprises a positioning nut;

the position adjusting nut is in threaded connection with the adjusting screw rod, and is located between the fixing plate and the supporting seat.

In one embodiment, the fixing plate is provided with a plurality of mounting holes;

the laser displacement sensor is arranged on the fixing plate by means of the mounting hole.

In one embodiment, the tire radial run out testing apparatus further comprises a fastener;

the laser displacement sensor is provided with a plurality of fixing holes, and the fasteners penetrate through the mounting holes and are in threaded connection with the fixing holes, so that the laser displacement sensor is fixed on the fixing plate.

In one embodiment, one end of the adjusting screw rod is welded on one side of the fixing plate facing the supporting seat.

Above-mentioned tire radial run-out testing arrangement sets up and adjusts support installation laser displacement sensor, through the cooperation of fixed plate, adjusting screw and adjustment tank, makes laser displacement sensor's height and angularly adjustable. The tire radial run-out testing device is simple to operate, easy to control and adjust, and capable of adjusting laser angles and distances according to different positions of different tires, and improves testing precision and efficiency.

Drawings

Fig. 1 is a schematic structural diagram of a tire radial run-out testing apparatus according to an embodiment of the present application.

Description of the reference numerals

1. A supporting seat; 11. an adjustment groove; 2. a fixing plate; 3. adjusting the screw rod; 4. locking the nut; 5. a base.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The traditional tire radial test adopts a dial indicator to carry out contact measurement, so that a probe of the dial indicator is in contact with the radial surface of the tire, the tire is rotated, the reading of the dial indicator at different marked positions of the tire is recorded, and the radial runout is calculated.

The laser displacement sensor can realize non-contact measurement by utilizing the characteristics of high directivity, high monochromaticity, high brightness and the like of laser. The laser displacement sensor is a novel measuring instrument manufactured by utilizing the advantages of laser, the precision and the reliability of displacement measurement are greatly improved due to the appearance of the laser displacement sensor, and an effective measuring method is provided for non-contact displacement measurement.

Because the laser displacement test result is more accurate and reliable, the laser displacement test gradually replaces the dial indicator test, and becomes a main tire radial run-out test mode. The test process of the radial run-out of the laser test tire comprises the following steps: the axle is supported by a jack, the tire can rotate freely, the laser displacement sensor is fixedly arranged on the clamp, so that the optical axis of laser is vertically intersected with the axis of the tire, the laser vertically irradiates the radial surface of the tire, the tire is rotated at a constant speed, and the displacement deviation of different positions of the tire is tested. In the whole test process, the laser displacement sensor is fixed at the same angle and the same height, the radial displacement difference of the tire is judged, and whether the radial runout of the tire assembly is qualified or not is evaluated.

However, a tire radial run-out testing device suitable for laser displacement testing does not exist at present, so that a tire radial run-out testing device is needed to be provided, a laser displacement sensor is well fixed in position in the testing process of laser testing tire radial run-out, the laser angle and distance can be adjusted according to different positions of different tires, and the testing precision and efficiency are improved.

Referring to fig. 1, the tire radial run-out testing device provided by an embodiment of the present application is disposed on a test bed, and includes an adjusting bracket and a laser displacement sensor. The laser displacement sensor is installed on the adjusting support, the installation height and the angle are adjustable, and the laser displacement sensor is adjusted to enable laser to vertically irradiate on the radial surface of the tire when the test is facilitated, so that the radial runout of the tire is accurately measured, and the test precision is improved. The tire radial run-out testing device can be matched with a data acquisition system to complete data recording and improve the testing efficiency.

Wherein, adjust the support and include supporting seat 1, fixed plate 2 and locking Assembly. Supporting seat 1 sets up on the test bench, and 2 fixed connection of fixed plate are in supporting seat 1 one side, and laser displacement sensor installs in the one side that supporting seat 1 was kept away from to fixed plate 2, and locking Assembly is used for locking fixed plate 2 on supporting seat 1. The fixing plate 2 and the locking assembly play a good fixing role in the laser displacement sensor, the whole test process is guaranteed, and the laser displacement sensor is fixed at the same angle and the same height, so that the reliability of test data is guaranteed.

Further, locking Assembly includes adjusting screw 3 and lock nut 4, and supporting seat 1 is equipped with adjustment tank 11 along the first direction, and adjusting screw 3 one end is fixed in fixed plate 2, and adjusting screw 3's the other end is worn out from adjustment tank 11 to can follow the first direction and remove and make rotary motion around adjusting screw 3 self axis in adjustment tank 11, lock nut 4 threaded connection is in the one end that adjusting screw 3 stretched out adjustment tank 11, so that fixed plate 2 is fixed 1 relative to the supporting seat.

It can be understood that the tire radial run-out test by laser displacement requires multiple adjustment of the test position of the laser, so that the optical axis of the laser is perpendicularly intersected with the axis of the tire, and the laser is perpendicularly irradiated on the radial surface of the tire, thereby obtaining accurate test data. Through adjusting screw 3 and adjustment tank 11's cooperation, adjusting screw 3 can drive fixed plate 2 and remove along first direction, and the axis of going around adjusting screw 3 makes rotary motion. Therefore, the height and the angle of the laser displacement sensor can be conveniently adjusted, the test position of the laser is adjusted, the operation is simple, and the test precision and the test efficiency are improved.

In some embodiments, the lock nut 4 includes a main body portion 41 and an operating portion 42 connected to the main body portion 41, and the operating portion 42 is perpendicular to the axis of the adjustment screw 3. The operating portion 42 extends the moment and facilitates manual adjustment of the locking condition of the lock nut 4. In a preferred embodiment, the main body 41 has a regular polygonal cross section, and the operation portion 42 is fixed to one side surface of the main body in the circumferential direction and is configured to extend lengthwise in a plate-like manner in a direction away from the main body 41. In this way, the operation portion 42 drives the main body portion 41 to rotate on the adjustment screw 3, and before the installation angle and height of the laser sensor are adjusted, the lock nut 4 is loosened, so that the adjustment screw 3 can move in the adjustment groove 11 in the first direction and rotate around the axis of the adjustment screw 3 itself. After the adjustment is finished, the locking nut 4 is screwed down to ensure the whole test process, and the laser displacement sensor is fixed at the same angle and the same height to ensure the reliability of test data.

It can be understood that the mode that supporting seat 1 set up on the test bench is not limited, can ensure when experimental that the whole support of adjusting can not rock. For example, in some embodiments, the support base 1 is provided with a counterweight, so that the center of gravity of the adjusting bracket is located on the support base 1. So, supporting seat 1 can directly be placed on the test bench, is convenient for adjust this tire runout testing arrangement wholly for the position of tire, extensive applicability. In other embodiments, the adjusting bracket further includes a base 5 fixedly connected to the test bed, and the supporting seat 1 is fixedly connected to the base 5 and perpendicular to the base 5. Further, the base 5 is fixed on the test bed by bolts. When being provided with unitized screw on the test bench, 5 accessible rag bolts of base set firmly the particular position on the test bench, have guaranteed this tire radial run-out testing arrangement's stability. Furthermore, the first direction is perpendicular to the base 5, and when the base 5 is fixedly connected to the test bed, the first direction is perpendicular to the test bed, so that the height of the laser displacement sensor relative to the test bed can be conveniently adjusted.

In particular, the fixing plate 2 has various mounting forms with respect to the support base 1. Specifically, in some embodiments, one side of the fixing plate 2, which is connected with the adjusting screw 3, is attached to one side of the supporting seat 1, the locking nut 4 is in threaded fit with the adjusting screw 3 on the other side of the supporting seat 1, and the fixing plate 1 and the locking nut 4 clamp the supporting seat 1 from two sides. So, fixed plate 2 is reliable with supporting seat 1's fixed, and when supporting seat 1 directly placed on the test bench, this kind of mounting form made the focus of adjusting the support be close to supporting seat 1, has guaranteed this tire runout testing arrangement's stability. In other embodiments, the adjusting bracket further comprises a position adjusting nut, the position adjusting nut is in threaded connection with the adjusting screw rod 3, and the position adjusting nut is located between the fixing plate 2 and the supporting seat 1. So, positioning nut and lock nut 4 press from both sides tight supporting seat 1 from both sides, through the position of adjustment positioning nut on adjusting screw 3, are convenient for adjust the distance between fixed plate 2 and the supporting seat 1. When the supporting seat 1 is fixedly connected to the test bed through the base 5, the relative position of the fixing plate 2 and the tire can be adjusted through the positioning nut 5 under the condition that the base 5 is not detached in the installation mode, and the flexibility of the tire radial run-out testing device is improved.

In some embodiments, the fixing plate 2 is provided with a plurality of mounting holes, and the laser displacement sensor is mounted on the fixing plate 2 through the mounting holes. Further, tire radial run-out testing arrangement still includes the fastener, is equipped with a plurality of fixed orificess on the laser displacement sensor, and mounting hole and threaded connection are worn to locate by the fastener in the fixed orifices to be fixed in laser displacement sensor on fixed plate 2. So, guaranteed the reliability that laser displacement sensor and fixed plate 2 are connected, convenient dismantlement simultaneously. In some embodiments, due to the fact that a plurality of screw holes for installation are formed in part of the existing laser displacement sensor, corresponding installation holes can be machined in the fixing plate 2 according to the relative positions of the existing screw holes, the installation holes are arranged in a penetrating mode through bolts and are connected to the screw holes in a threaded mode, and the machining difficulty of the tire radial run-out testing device is lowered.

Alternatively, the connection mode of the adjusting screw rod 3 and the fixing plate 2 is not limited, such as a threaded connection, an interference fit, a welded connection, or the like. Concretely to some embodiments, 3 one end welding of adjusting screw is in fixed plate 2 one side towards supporting seat 1, under the prerequisite of guaranteeing joint strength, is favorable to reducing tire radial run-out testing arrangement's the processing degree of difficulty.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A tire radial run-out testing device is arranged on a test bed and is characterized by comprising an adjusting bracket and a laser displacement sensor;

the adjusting bracket includes:

the supporting seat is arranged on the test bed;

the fixing plate is fixedly connected to one side of the supporting seat; and

2. The tire radial run-out testing device of claim 1, wherein the lock nut comprises a main body portion and an operating portion connected to the main body portion;

the operating part is perpendicular to the axis of the adjusting screw.

3. The tire radial run-out testing apparatus of claim 2, wherein the main body portion has a cross-section in the shape of a regular polygon;

4. The tire radial run out testing apparatus of claim 1, wherein the adjustment bracket further comprises a base fixedly attached to the test stand;

5. The tire radial run-out testing apparatus of claim 4, wherein the base is fixed to the test stand by bolts.

6. The tire radial run out testing apparatus of claim 4, wherein the first direction is perpendicular to the base.

7. The tire radial run out testing apparatus of claim 1, wherein the adjustment bracket further comprises a positioning nut;

8. The tire radial run-out testing apparatus of any one of claims 1-7, wherein the fixing plate is provided with a plurality of mounting holes;

9. The tire radial run out testing device of claim 8, further comprising a fastener;

10. The tire radial run-out testing device of any one of claims 1-7, wherein one end of the adjusting screw is welded to a side of the fixing plate facing the supporting seat.