CN112572323A - Wheel speed detection device and logistics vehicle - Google Patents
Wheel speed detection device and logistics vehicle Download PDFInfo
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- CN112572323A CN112572323A CN202011601568.0A CN202011601568A CN112572323A CN 112572323 A CN112572323 A CN 112572323A CN 202011601568 A CN202011601568 A CN 202011601568A CN 112572323 A CN112572323 A CN 112572323A
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- wheel speed
- brake disc
- wheel
- brake
- speed sensor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
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- Engineering & Computer Science (AREA)
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Abstract
The invention belongs to the technical field of logistics vehicles, and discloses a wheel speed detection device and a logistics vehicle, wherein the wheel speed detection device is used for detecting the rotating speed of wheels arranged on an integral front axle, the integral front axle comprises an axle body, a half axle, a brake disc and a brake caliper, and the wheel speed detection device comprises: the bracket is fixedly connected to the half shaft; and the wheel speed sensor is fixedly connected to the support, the wheel speed sensor is arranged opposite to the disc surface of the brake disc, the brake disc is provided with a plurality of through holes, the rotating shafts of the plurality of through holes wound around the brake disc are uniformly distributed to form a grid, and when the brake disc rotates along with the wheel, the detection end of the wheel speed sensor is just opposite to the through holes or the part of the wheel speed sensor between the adjacent through holes is just opposite to the part of the brake disc between the adjacent through. The wheel speed detection device provided by the invention can be suitable for a logistics vehicle adopting an integral front axle so as to be suitable for detecting the wheel speed of the front wheel of the logistics vehicle adopting the integral front axle.
Description
Technical Field
The invention relates to the technical field of logistics vehicles, in particular to a wheel speed detection device and a logistics vehicle.
Background
The logistics vehicle is mainly applied to unmanned delivery of short-distance goods in places such as factories and communities, and operation parameters such as the direction and the speed of the logistics vehicle in operation need to be detected in real time or at regular time on the basis of the premise of unmanned driving so as to control the logistics vehicle to advance or be used for subsequent improvement.
The automatic driving of commodity circulation car needs fast feedback of wheel, also needs fast detection device of wheel to measure fast, and in addition, the fast detection of wheel still can be convenient for judge whether each wheel of commodity circulation car has unfavorable condition such as locking, skidding. Generally, a wheel speed detecting apparatus is generally used in a vehicle employing a free-standing suspension front axle, and includes a ring gear mounted on a wheel hub or a wheel axle to rotate together with a wheel, and a wheel speed sensor (a hall sensor, a magneto-electric sensor, a photo sensor, etc.) used in cooperation with the ring gear.
And the integral front axle comprises an axle body, a half axle, a steering knuckle arm and a kingpin, wherein the kingpin is used for connecting the axle body and the half axle and enabling the half axle to pivot around the axle body, and the half axle, the steering knuckle arm and the kingpin are generally integrally formed, so that the integral front axle does not have a space for additionally installing a gear ring after a brake disc is arranged, a wheel speed detection device cannot be additionally installed, and inconvenience is brought to application of the logistics vehicle.
Therefore, the above problems need to be solved.
Disclosure of Invention
The invention aims to provide a wheel speed detection device and a logistics vehicle, and aims to solve the problem that the wheel speed of a front wheel of a vehicle adopting an integral front axle is inconvenient to detect.
In order to achieve the purpose, the invention adopts the following technical scheme:
a wheel speed detecting device for detecting a rotational speed of a wheel mounted on an integrated front axle including an axle body, a half shaft, a brake disc, a brake caliper, and a knuckle arm, the wheel speed detecting device comprising:
the bracket is fixedly connected to the half shaft or the steering knuckle arm; and
the wheel speed sensor is fixedly connected with the support, the wheel speed sensor and the disc surface of the brake disc are arranged oppositely, the brake disc is provided with a plurality of through holes, the through holes are wound around the rotating shaft of the brake disc and are uniformly distributed to form a grid, when the brake disc rotates along with wheels, the detection end of the wheel speed sensor is right opposite to the through holes, or the part, between the through holes, of the brake disc, which is adjacent to the through holes, is right opposite.
Preferably, the grille is provided offset from a braking portion of the brake disc for engagement with the brake caliper.
Preferably, the grille is located on a side of the braking portion near a center of the brake disk.
Preferably, the grille partially coincides with a braking portion of the brake disc for cooperation with the brake caliper.
Preferably, the through hole extends to an outer rim of the brake disc in a radial direction of the brake disc.
Preferably, the through hole is a sector hole.
Preferably, the corners of the sector holes are provided with round corners.
Preferably, the number of the through holes is 60 or more.
Preferably, the wheel speed sensor is detachably connected to the bracket so that a distance between the detecting end of the wheel speed sensor and the brake disc can be adjusted.
In order to achieve the purpose, the invention also adopts the following technical scheme:
a logistics vehicle comprises a vehicle body and the wheel speed detection device.
The invention has the beneficial effects that:
the wheel speed detection device provided by the invention does not need to be provided with a gear ring which is matched with a wheel speed sensor for use, but utilizes the through hole which is arranged on the brake disc as a grating which is required by the wheel speed sensor for carrying out wheel speed detection, so that the wheel speed detection device can be suitable for a logistics vehicle adopting an integral front axle, and is suitable for realizing real-time monitoring of the wheel speed of all wheels of the logistics vehicle adopting the integral front axle.
Drawings
FIG. 1 is a schematic structural diagram of a wheel speed detecting apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another view of the wheel speed detecting device in the embodiment of the present invention;
FIG. 3 is a schematic diagram of a wheel speed sensor and a brake disc in accordance with an embodiment of the present invention.
In the figure:
1. a bridge body; 2. a half shaft; 3. a kingpin; 4. a hub; 5. a brake disc; 51. a through hole; 6. a brake caliper; 7. a knuckle arm;
10. a support; 20. and a wheel speed sensor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The embodiment provides a logistics vehicle which can be used for short-distance distribution of goods in regional places such as factories, warehouses and communities. The operation of commodity circulation car mainly is slow speed, steady, big bearing capacity, therefore, the front axle of commodity circulation car that this embodiment provided adopts the processing convenience, low in manufacturing cost, the integral front axle that is convenient for maintain and rigidity and bending resistance torsional strength are good.
Referring to fig. 1 and 2, the integral front axle comprises an axle body 1, a half axle 2 and a kingpin 3, wherein the kingpin 3 is used for connecting the axle body 1 and the half axle 2 and enabling the half axle 2 to pivot around the axle body 1, and a steering knuckle arm 7 in transmission connection with a steering gear is arranged on the half axle 2, so that a wheel hub 4 fixed on the half axle 2 and wheels can be steered. For front wheel braking, the integral front axle further comprises a brake disc 5 mounted on the wheel hub 4 or wheel axle to rotate together with the wheel, and a brake caliper 6 fixedly connected to the half-axle 2, wherein the brake caliper 6 can drive the caliper blocks thereof to move towards the brake disc 5 after receiving a braking command issued by the vehicle-mounted controller, so as to contact with the brake disc 5 to generate a braking torque.
Referring to fig. 1 to fig. 3, in order to detect the rotation speed of the wheel, the logistics vehicle of the present embodiment further includes a wheel speed detection device, which includes a bracket 10 and a wheel speed sensor 20. The wheel speed sensor 20 is fixedly connected to the bracket 10, the wheel speed sensor 20 is disposed opposite to the disc surface of the brake disc 5, and the bracket 10 is fixedly connected to the axle shaft 2 or the knuckle arm 7, so that the wheel speed sensor 20 can pivot around the axle body 1 along with the wheel. The brake disc 5 is provided with a plurality of through holes 51, the plurality of through holes 51 are uniformly distributed around the rotating shaft of the brake disc 5 to form a grid, and when the brake disc 5 rotates along with the wheel, the detection end of the wheel speed sensor 20 is opposite to the through holes 51, or opposite to the part of the brake disc 5 between the adjacent through holes 51.
By means of the structure, the wheel speed detection device does not need to be independently provided with a gear ring matched with the wheel speed sensor 20 for use, but utilizes the through hole 51 arranged on the brake disc 5 as the wheel speed sensor 20 to carry out the required grating for wheel speed detection, so that the wheel speed detection device can be suitable for the logistics vehicle adopting the integral front axle, and the wheel speed real-time monitoring of all wheels of the logistics vehicle adopting the integral front axle is realized.
In the present embodiment, the carrier 10 is disposed on the knuckle arm 21, the carrier 10 may be integrally cast with the axle shaft 2, the knuckle arm 7 and the kingpin 3, and the wheel speed sensor 20 may be conveniently and positionally accurately mounted based on the previously designed installation position of the carrier 10. Of course, in other embodiments, the bracket 10 may be detachably connected to the knuckle arm 21, for example, an anchor ear may be selected as the bracket 10 to be suitable for retrofitting an existing logistics vehicle without a wheel speed detection device.
In addition, the wheel speed sensor 20 and the bracket 10 are also preferably detachably connected to adjust the distance between the detecting end of the wheel speed sensor 20 and the brake disc 5, so that the wheel speed sensor 20 can generate and output a voltage signal in a suitable range for the detection terminal to identify. The connection structure adapted to adjust the distance between the detecting end of the wheel speed sensor 20 and the brake disc 5 may be a screw connection structure, a clamping structure capable of changing a clamping position, or the like, and is not limited herein.
The wheel speed sensor 20 can adopt the hall sensor that can carry out speed detection based on above-mentioned grid, magnetoelectric sensor and photoelectric sensor etc, through hall sensor, the principle that magnetoelectric sensor and photoelectric sensor carry out the fast detection of wheel is prior art, it does not do the repeated description here, and need additionally to supplement the explanation be, photoelectric sensor detects the fast need be equipped with one with photoelectric sensor's the supporting reflector panel that uses of detection end (including photoemitter and light receiving pole), this reflector panel should set up respectively in the both sides of brake disc 5 with photoelectric sensor's detection end, therefore, can borrow the fixed reflector panel of the fixed casing of braking pincers 6 of establishing in brake disc 5 both sides of striding, perhaps additionally set up one with turn to the fixed and stride establish in the fixed reflector panel of auxiliary stay structure of brake disc 5 both sides of structure can.
In the braking process, parameters such as the contact area between the caliper blocks of the brake caliper 6 and the brake disc 5 and the abutting pressure exerted by the caliper blocks of the brake caliper 6 on the brake disc 5 can all affect the braking effect of the brake caliper 6, so that in the embodiment, the braking positions of the grids and the brake disc 5 for matching with the brake caliper 6 are arranged in a staggered mode, and the contact area between the caliper blocks of the brake caliper 6 and the brake disc 5 is not reduced by the grids. However, under the condition that the above parameters are not changed, the farther the contact position of the friction plate of the brake caliper 6 and the brake disc 5 is from the rotating shaft of the brake disc 5, the better the braking effect, therefore, the contact position of the caliper pad of the brake caliper 6 and the brake disc 5 is preferably the outer rim part of the brake disc 5, that is, the grid is positioned on the side of the braking position of the brake disc 5 close to the center of the brake disc 5 in the embodiment. Of course, in other alternative embodiments, the through hole 51 may also extend to the outer rim of the brake disc 5 along the radial direction of the brake disc 5, that is, the brake disc 5 is formed into a ring gear structure, so as to be suitable for the conditions that the vehicle speed is low, the load capacity is small, or the space limitation is hindered, and the wheel speed sensor 20 needs to be arranged on the outer side of the driving disc.
In a preferred embodiment, the grid partially coincides with the braking area of the brake disc 5 intended to cooperate with the brake caliper 6, i.e. during braking, the side of the friction lining of the brake caliper 6 close to the centre of the brake disc 5 is in contact with the side of the grid facing away from the centre of the brake disc 5, so that the friction lining can also be in contact with the solid part of the grid of the brake disc 5 located between adjacent through holes 51, avoiding that the grid part of the brake disc 5, which is slightly structurally weaker, cannot withstand the excessive braking torque acting on the outside of the grid during braking.
For obtaining more accurate wheel speed detection data, the more through holes 51 are provided on the brake disc 5, for example, the number of the through holes 51 is more than 60 in this embodiment, and in order to distribute the through holes 51 and make the through holes 51 have sufficient hollow size to meet the detection accuracy requirement of the wheel speed sensor 20, the through holes 51 may be provided in the embodiment close to the braking portion of the brake disc 5 for cooperating with the brake caliper 6, so as to obtain a larger arrangement space at the portion.
Further, in the present embodiment, the through hole 51 is preferably a sector hole formed by two non-coincident diameters of two large, small and large circles concentric with the axis of the brake disc 5, and based on this, the portion of the brake disc 5 located between two adjacent sector holes may be formed as a rectangle, and the size of each rectangle is the same, so that the wheel speed detection sensor can obtain the detection signal of the pulse law. Preferably, the corners of the sector hole are provided with round corners, so that the edges of the sector hole are smoothly transited, and the sector hole is prevented from being torn in the braking process.
It should be noted that the wheel speed detection device provided in this embodiment may be applied to other vehicles using an integrated front axle besides the logistics vehicle, and is not limited herein. It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A wheel speed detecting device for detecting the rotational speed of a wheel mounted on an integrated front axle including an axle body (1), a half shaft (2), a brake disc (5), a brake caliper (6), and a knuckle arm (7), the wheel speed detecting device comprising:
a bracket (10) fixedly connected to the half shaft (2) or the knuckle arm (7); and
wheel speed sensor (20), fixed connection in support (10), wheel speed sensor (20) with the quotation of brake disc (5) sets up relatively, brake disc (5) are provided with a plurality of through-holes (51), a plurality of through-holes (51) wind the pivot evenly distributed of brake disc (5) forms the grid, works as brake disc (5) are followed when the wheel rotates, the detection end of wheel speed sensor (20) with through-hole (51) are just right, or with brake disc (5) are located adjacently the part between through-hole (51) is just right.
2. The wheel speed detecting device according to claim 1, wherein the grid is disposed offset from a braking location of the brake disc (5) for engagement with the brake caliper (6).
3. The wheel speed detecting apparatus according to claim 2, wherein the grid is located on a side of the braking portion near a center of the brake disk (5).
4. The wheel speed detecting device according to claim 1, characterized in that the through hole (51) extends to an outer rim of the brake disc (5) in a radial direction of the brake disc (5).
5. The wheel speed detecting device according to claim 1, characterized in that the grid partially coincides with a braking location of the brake disc (5) for engagement with the brake caliper (6).
6. The wheel speed detecting device according to any of claims 1 to 5, wherein the through hole (51) is a sector hole.
7. The wheel speed detecting device of claim 6, wherein corners of the sector hole are provided with rounded corners.
8. The wheel speed detecting device according to claim 1, wherein the number of the through holes (51) is 60 or more.
9. The wheel speed detecting apparatus according to claim 1, wherein the wheel speed sensor (20) is detachably attached to the carrier (10) so that a distance between the detecting end of the wheel speed sensor (20) and the brake disk (5) can be adjusted.
10. A physical distribution vehicle, characterized in that the physical distribution vehicle comprises a vehicle body and the wheel speed detection device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011601568.0A CN112572323A (en) | 2020-12-29 | 2020-12-29 | Wheel speed detection device and logistics vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011601568.0A CN112572323A (en) | 2020-12-29 | 2020-12-29 | Wheel speed detection device and logistics vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN112572323A true CN112572323A (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011601568.0A Pending CN112572323A (en) | 2020-12-29 | 2020-12-29 | Wheel speed detection device and logistics vehicle |
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| CN (1) | CN112572323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113200031A (en) * | 2021-05-25 | 2021-08-03 | 刘利锋 | External wheel speed monitor |
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| DE102012009116A1 (en) * | 2012-05-09 | 2013-04-18 | Audi Ag | Device for detecting rotation speed of wheel of bicycle, has brake disk whose friction ring comprises radial evenly distributed recesses, where sensors derive signal by movement of recesses relative to sensor |
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| CN110174524A (en) * | 2019-06-21 | 2019-08-27 | 芜湖伯特利汽车安全系统股份有限公司 | Automobile redundancy wheel speed detection system |
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|---|---|---|---|---|
| KR20040033442A (en) * | 2002-10-14 | 2004-04-28 | 현대자동차주식회사 | safety brake device of a vehicle |
| KR20070070845A (en) * | 2005-12-29 | 2007-07-04 | 주식회사 만도 | Method of fail detection of wheel speed sensor |
| CN201077454Y (en) * | 2007-08-02 | 2008-06-25 | 安徽江淮汽车股份有限公司 | Light truck hydraulic locking prevention braking system |
| DE102012009116A1 (en) * | 2012-05-09 | 2013-04-18 | Audi Ag | Device for detecting rotation speed of wheel of bicycle, has brake disk whose friction ring comprises radial evenly distributed recesses, where sensors derive signal by movement of recesses relative to sensor |
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| CN113200031B (en) * | 2021-05-25 | 2022-03-22 | 刘利锋 | External wheel speed monitor |
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Application publication date: 20210330 |
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