Steering angle detection mechanism and lifting machine

Abstract

The present application relates to a kind of steering angle detection mechanism and lifting machinery, belong to steering detection technical field.The steering angle detection mechanism, including sensor mounting bracket, shaft sleeve, steering tie rod pin and angle sensor;The angle sensor is installed on sensor mounting bracket;Sensor mounting bracket includes support plate and the sleeve fixedly connected with support plate;The shaft sleeve is installed between the sleeve and steering tie rod pin;A kind of lifting machinery, including the steering angle detection mechanism of preceding description.The present application increases the sleeve on sensor mounting bracket, increases the shaft sleeve between sensor support and steering tie rod pin, guarantees the coaxiality on installation cooperation, effectively avoids the damage problem of sensor rotating component caused by different shaft problem, also can reverse verify the machining precision of structural member, and processing manufacturing error is larger, will lead to the shaft sleeve cannot be installed.

Description

Technical Field

[0001] This invention relates to the field of steering detection technology, and in particular to a steering angle detection mechanism and lifting mechanism. Background Technology

[0002] With the rapid development of the times, mobile lifting work platforms are being used in increasingly widespread scenarios. Electrification and pollution-free operation have become the mainstream trends in the industry, offering significant advantages in terms of safety, economy, and convenience. Steering is an essential basic operation for mobile lifting work platforms during daily use.

[0003] In existing steering detection mechanisms, the sensor bracket is mounted on the steering knuckle. Coaxiality of the sensor rotating component, sensor bracket, and steering tie rod pin hole is ensured through dimensional positioning. However, poor coaxiality due to issues with component machining accuracy or assembly can easily occur, leading to damage to the sensor rotating component and rendering it unusable. Problems with the steering detection mechanism can cause damage to the steering angle sensor or errors in the steering angle, resulting in slow driving, severe tire wear, or even vehicle malfunction.

[0004] Therefore, researching a reliable steering angle detection mechanism to ensure accurate steering angle detection, reduce vehicle unusability due to sensor problems, and lower maintenance and replacement costs is of great engineering significance. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a steering angle detection mechanism and lifting mechanism. A sleeve is added to the sensor mounting bracket, and a bushing is installed between the sleeve and the steering tie rod pin to ensure the coaxiality of the steering angle sensor and the steering tie rod pin. This solves the problem of misalignment between the steering angle sensor and the steering angle detection mechanism caused by manufacturing and assembly errors, and ensures the reliability of the installation and detection of the steering angle detection mechanism.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] In a first aspect, the present invention provides a steering angle detection mechanism, comprising a sensor mounting bracket, a bushing, a steering tie rod pin, and a steering angle sensor; the steering angle sensor is mounted on the sensor mounting bracket.

[0008] The sensor mounting bracket includes a support plate and a sleeve that is fixedly connected to the support plate;

[0009] The bushing is installed between the sleeve and the steering tie rod pin.

[0010] Furthermore, this includes the steering knuckle and steering tie rod;

[0011] The sensor mounting bracket is installed on the steering knuckle, the steering tie rod pin is fixed to the steering tie rod, and the steering tie rod is connected to the steering knuckle through the steering tie rod pin.

[0012] Furthermore, the angle sensor includes a rotating component; the rotating component has a slot in the diametrical direction, and the slot has an axial thickness;

[0013] The steering tie rod pin is machined into a three-tiered gradient. The first tier is a straight column that is embedded in the straight groove of the rotating component in the angle sensor. The second tier is a cylinder with a diameter of half the diameter of the steering tie rod pin, and the bushing is coaxially embedded in the second tier. The third tier is the pin body with a diameter equal to the diameter of the steering tie rod pin.

[0014] Furthermore, the steering tie rod and the steering knuckle are hinged via the third stage of the steering tie rod pin.

[0015] Furthermore, the diameter of the second stage of the steering tie rod pin is a smaller than the diameter of the steering tie rod pin.

[0016] Furthermore, the inner diameter of the bushing matches the second outer diameter of the steering tie rod pin; the outer diameter of the bushing matches the inner diameter of the sleeve.

[0017] Preferably, the bushing is a copper bushing, used to ensure the coaxiality of the angle sensor and the steering tie rod pin.

[0018] In a second aspect, the present invention also provides a lifting mechanism, which includes the steering angle detection mechanism described in any one of the first aspects.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0020] (1) The steering angle detection mechanism of the present invention adds a sleeve to the sensor mounting bracket and uses a bushing to install between the sleeve and the steering tie rod pin to ensure the coaxiality of the steering angle sensor, the sensor mounting bracket and the steering tie rod pin, thereby ensuring the reliability of the installation and detection of the steering angle detection mechanism and avoiding mechanical damage to the rotating parts of the sensor due to poor coaxiality.

[0021] (2) The steering angle detection mechanism of the present invention can verify the machining accuracy of the structural components in reverse. If the machining, mounting hole size positioning and assembly errors of the structural components in the steering angle detection mechanism are large and the machining accuracy is insufficient, the bushing will not be able to be installed. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, illustrate embodiments of the invention and, together with the specification, serve to explain the principles of the invention.

[0023] The invention will be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein:

[0024] Figure 1 This is a schematic diagram of the steering angle detection mechanism provided in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the steering tie rod pin position of the steering angle detection mechanism provided in this embodiment of the invention;

[0026] Figure 3 This is a side view of the steering tie rod pin position of the steering angle detection mechanism provided in this embodiment of the invention;

[0027] Figure 4 This is a schematic diagram of the position of the steering angle detection mechanism provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the steering angle detection mechanism provided in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the AA section position of the steering angle detection mechanism provided in an embodiment of the present invention;

[0030] Figure 7 This is a cross-sectional view of part AA of the steering angle detection mechanism provided in an embodiment of the present invention;

[0031] Figure 8 This is a side view of the sensor mounting bracket of the steering angle detection mechanism provided in an embodiment of the present invention;

[0032] Figure 9 This is a top view of the sensor mounting bracket of the steering angle detection mechanism provided in an embodiment of the present invention;

[0033] Figure 10 This is a side view of the bushing of the steering angle detection mechanism provided in an embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the steering tie rod pin of the steering angle detection mechanism provided in an embodiment of the present invention;

[0035] Figure 12 This is a schematic diagram of the lifting mechanism of the steering angle detection mechanism provided in an embodiment of the present invention;

[0036] Labeling Explanation: 1. Steering knuckle; 2. Steering tie rod; 3. Steering tie rod pin; 3-1. First stage; 3-2. Second stage; 3-3. Third stage; 4. Bushing; 5. Angle sensor; 5-1. Rotating component; 5-1-1. Slot; 6. Sensor mounting bracket; 6-1. Support plate; 6-2. Sleeve. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of the invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Example 1

[0041] like Figures 1-4 as well as Figure 7 As shown, this embodiment provides a steering angle detection mechanism, including a sensor mounting bracket 6, a bushing 4, a steering tie rod pin 3, and a steering angle sensor 5; the steering tie rod pin 3 is as follows: Figure 11 As shown, the steering angle sensor 5 is mounted on the sensor mounting bracket 6 and is used to detect the steering angle.

[0042] Specifically, such as Figures 6-9 As shown, the sensor mounting bracket 6 includes a support plate 6-1 and a sleeve 6-2 fixedly connected to the support plate 6-1; a bushing 4 is installed between the sleeve 6-2 and the steering tie rod pin 3 to ensure the coaxiality of the angle sensor 5 and the steering tie rod pin 3. The bushing 4 is as follows... Figure 10 As shown.

[0043] Furthermore, such as Figure 1 and Figure 2 As shown, the steering angle detection mechanism includes a steering knuckle 1 and a steering tie rod 2; the sensor mounting bracket 6 is mounted on the steering knuckle 1, the steering tie rod pin 3 is fixed to the steering tie rod 2, and the steering tie rod 2 is connected to the steering knuckle 1 through the steering tie rod pin 3.

[0044] Specifically, the steering knuckle 1 is used to install the motor reducer, support and drive the tire to deflect at a certain angle to achieve steering, and the steering tie rod 2 is used to connect multiple steering knuckles 1 to transmit steering torque.

[0045] Furthermore, such as Figure 2 , Figure 5 , Figure 7 and Figure 11 As shown, the angle sensor 5 includes a rotating component 5-1, with a slot 5-1-1 formed in the diametrical direction. The slot 5-1-1 has an axial thickness. The steering tie rod pin 3 is machined into a three-tiered structure. The first tier 3-1 is a cylindrical body, which is embedded in the slot 5-1-1 of the rotating component 5-1 in the angle sensor 5 to form a radial limit. The axial thickness of the slot 5-1-1 provides axial limit for the cylindrical body. The second tier 3-2 is a cylinder with a diameter half the diameter of the steering tie rod pin 3. The bushing 4 is coaxially embedded in the second tier 3-2. The third tier 3-3 is the main body of the pin, with a diameter equal to the diameter of the steering tie rod pin 3.

[0046] Specifically, such as Figure 7 As shown, the inner diameter of bushing 4 is compatible with the outer diameter of the second stage 3-2 of steering tie rod pin 3; the outer diameter of bushing 4 is compatible with the inner diameter of sleeve 6-2.

[0047] Optionally, the diameter of the second stage 3-2 of the steering tie rod pin 3 may be a smaller size than the diameter of the third stage 3-3 of the steering tie rod pin 3.

[0048] Specifically, such as Figure 7 As shown, when the steering tie rod pin 3 turns, it drives the rotating component 5-1 to move; preferably, the bushing 4 is a copper bushing.

[0049] Example 2

[0050] like Figure 12 As shown, this embodiment of the invention also provides a lifting mechanism equipped with the steering angle detection mechanism described in Embodiment 1.

[0051] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A steering angle detection mechanism, characterized in that, It includes a sensor mounting bracket (6), a bushing (4), a steering tie rod pin (3), and a steering angle sensor (5); the steering angle sensor (5) is mounted on the sensor mounting bracket (6); The sensor mounting bracket (6) includes a support plate (6-1) and a sleeve (6-2) fixedly connected to the support plate (6-1). The bushing (4) is installed between the sleeve (6-2) and the steering tie rod pin (3); Includes steering knuckle (1) and steering tie rod (2); The sensor mounting bracket (6) is mounted on the steering knuckle (1), the steering tie rod pin (3) is fixed to the steering tie rod (2), and the steering tie rod (2) is connected to the steering knuckle (1) through the steering tie rod pin (3); The angle sensor (5) includes a rotating component (5-1); the rotating component (5-1) has a slot (5-1-1) in the diametrical direction, and the slot (5-1-1) has an axial thickness; The steering tie rod pin (3) is machined into a three-stage gradient. The first stage (3-1) is a straight column that is embedded in the straight groove (5-1-1) of the rotating component (5-1) in the angle sensor (5). The second stage (3-2) is a cylinder with a diameter half that of the steering tie rod pin (3). The bushing (4) is coaxially embedded in the second stage (3-2). The third stage (3-3) is the main body of the pin with a diameter equal to that of the steering tie rod pin (3).

2. The steering angle detection mechanism according to claim 1, characterized in that, The steering tie rod (2) and the steering knuckle (1) are hinged through the third step (3-3) of the steering tie rod pin (3).

3. The steering angle detection mechanism according to claim 1, characterized in that, The diameter of the second step (3-2) of the steering tie rod pin (3) is smaller than the diameter of the third step (3-3) of the steering tie rod pin (3).

4. The steering angle detection mechanism according to claim 1, characterized in that, The inner diameter of the bushing (4) matches the outer diameter of the second step (3-2) of the steering tie rod pin (3); the outer diameter of the bushing (4) matches the inner diameter of the sleeve (6-2).

5. The steering angle detection mechanism according to claim 1, characterized in that, The bushing (4) is a copper bushing.

6. A lifting mechanism, comprising the steering angle detection mechanism as described in any one of claims 1 to 5.

Images