Angle sensor mounting structure and vehicle chassis

Abstract

The utility model discloses an angle sensor mounting structure and vehicle chassis, its first component is hinged with second component through pin shaft, and the fixed mounting axle seat (7) on pin shaft, and the rotary mounting turntable (6) on axle seat, and the coaxial arrangement of turntable, axle seat and pin shaft, and the angle sensor (4) of installation on the upper face of turntable, and the fixed connection of the shell of angle sensor and turntable, and the fixed connection of the axle center and axle seat, and the first component is connected turntable through the lever, and the lever includes first part and second part, and sets up the connecting pin on the first part, and sets up the strip type slot on the second part, and the strip type slot is arranged along the radial of turntable, and the connecting pin is located in the strip type slot, and is connected with the strip type slot and touches, and the axial and radial of connecting pin leave the clearance for the activity of connecting pin respectively. The utility model can eliminate the shift of first component in connecting position, make it not pass to angle sensor, thereby can prevent angle sensor damage.

Description

Technical Field

[0001] This utility model relates to aerial work platforms, specifically to an angle sensor mounting structure and a vehicle chassis. Background Technology

[0002] When the aerial work platform turns its tires, it needs to detect the steering angle of each tire to coordinate the steering of the four tires synchronously. An angle sensor is usually installed on the shaft at the center of the tire's rotation to detect the steering angle.

[0003] Typically, the tire is fixed to the steering coupling plate via a reducer, and the steering coupling plate is hinged to the outrigger via a pin. The steering coupling plate can rotate around the pin. In traditional installation methods, the angle sensor shaft is usually fixed to the center of the pin, and the angle sensor housing is fixed to one end of a lever that can rotate around the pin. The other end of the lever is fixed to the steering coupling plate. When the steering coupling plate rotates, it drives the angle sensor housing to rotate via the lever. Due to the installation gap between the steering coupling plate and the outrigger, or due to bearing wear between the steering coupling plate and the pin after a period of use, movement can occur between the steering coupling plate and the outrigger. This movement is transmitted to the angle sensor housing through the lever, causing stress between the angle sensor housing and the shaft, which can easily damage the angle sensor or affect its detection accuracy. Furthermore, because one end of the lever is rotatably fixed to the pin and the other end is fixed to the steering coupling plate, and the angle sensor shaft is fixed to the pin while the housing is fixed to the lever, the manufacturing precision requirements for the components are very high. Otherwise, the angle sensor housing and shaft may become misaligned, thus damaging the angle sensor. Utility Model Content

[0004] The technical problem to be solved by this utility model is that wheel angle sensors are easily damaged by the movement of the steering coupling plate. This utility model provides an angle sensor mounting structure and vehicle chassis that can eliminate the influence of the movement of the steering coupling plate on the connection between the steering coupling plate and the pin.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An angle sensor mounting structure includes a first component and a second component, wherein the first component and the second component are hinged via a pin shaft, and its structural feature is: A bearing seat is fixedly installed on the pin, and a turntable is rotatably installed on the bearing seat. The turntable, bearing seat, and pin are arranged along the same axis. An angle sensor is installed on the turntable. The angle sensor includes a housing and a shaft. The housing is fixedly connected to the turntable, and the shaft is fixedly connected to the bearing seat. The first component is connected to the turntable via a lever. The lever includes a first part and a second part. A connecting pin is provided on the first part, and a strip groove is provided on the second part. The strip groove is arranged radially along the turntable. The connecting pin is located in the strip groove and abuts against the strip groove. The connecting pin has axial and radial clearances for movement.

[0006] This invention divides the lever connecting the first component (steering connecting disc) and the pin shaft into a first part and a second part. The first part is provided with a connecting pin, and the second part is provided with a strip groove. The strip groove is arranged radially along the turntable. The connecting pin is located in the strip groove and abuts against the strip groove. The connecting pin has axial and radial clearances for movement. This not only transmits the rotational motion of the first component to the angle sensor, but also eliminates the movement of the first component at the connection between the first and second parts of the lever through the axial and radial clearances of the connecting pin, preventing the movement of the first component from being transmitted to the angle sensor and thus preventing damage to the angle sensor.

[0007] Meanwhile, this utility model uses a high-precision mating shaft seat and turntable to fix the angle sensor shaft and housing on the shaft seat and turntable respectively, ensuring that the angle sensor shaft and housing are coaxial. During use, external forces are borne by the shaft seat and turntable, avoiding damage to the angle sensor from external forces.

[0008] A further improvement to the above solution is that the bearing includes a turntable connecting part and a fixing part. An inner cylindrical surface is provided inside the turntable, and the turntable is sleeved on the outer cylindrical surface of the turntable connecting part. The outer cylindrical surface and the inner cylindrical surface are in clearance fit, so that the bearing and the turntable can rotate relative to each other. The center of the bearing and the center of the turntable are coaxial, which ensures that the axis of the angle sensor is coaxial with the outer shell, thereby avoiding damage to the angle sensor and detection accuracy.

[0009] A further improvement to the above solution is that a step is provided between the turntable connecting part and the fixed part, and a retaining ring is installed on the turntable, the retaining ring extending into the step to restrict the axial movement of the turntable.

[0010] A further improvement to the above solution is that the first part is fixedly connected to the connecting pin, and the second part is fixedly connected to the turntable.

[0011] A further improvement to the above solution is that the connecting pin is a cylindrical pin, the strip groove is a U-shaped groove, and the connecting pin is tangentially connected to the strip groove.

[0012] A further improvement to the above solution is that a process hole is provided on the turntable to facilitate the fixing of the shaft seat and the pin. During installation, a bolt can be inserted into the shaft seat through the process hole, and the shaft seat can be fixedly connected to the pin using the bolt.

[0013] A further improvement to the above solution is that a protective cover is installed on the angle sensor, and the protective cover is fixed on the turntable.

[0014] Based on the same inventive concept, this utility model also provides a vehicle chassis, which includes a center frame, with one end of a support leg hinged to both sides of the center frame, and a steering connecting plate hinged to the other end of the support leg via a pin shaft. The steering connecting plate is fixedly connected to a wheel assembly, and an angle sensor is installed between the support leg and the steering connecting plate through the wheel angle sensor mounting structure.

[0015] A further improvement to the above solution is that an angle sensor is installed between the central frame and the support leg via the angle sensor mounting structure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a cross-sectional view of one embodiment of the angle sensor mounting structure of this utility model.

[0018] Figure 2 This is an enlarged cross-sectional view of the pin shaft in one embodiment of the angle sensor mounting structure of this utility model.

[0019] Figure 3 This is an exploded view of the components of an embodiment of the angle sensor mounting structure of this utility model.

[0020] Figure 4 This is a bottom view of the connection structure between the turntable and the second part of the lever.

[0021] Figure 5 This is a schematic diagram of a vehicle chassis according to an embodiment of the present invention (without wheel assemblies installed). Detailed Implementation

[0022] The present invention will be further described below with reference to specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; 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 can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please see Figure 1 - Figure 4 An embodiment of the angle sensor mounting structure of this utility model includes a first component 11 and a second component 13. The first component 11 and the second component 13 are hinged together by a pin 12. A bearing 7 is fixedly mounted on the pin 12, and a turntable 6 is rotatably mounted on the bearing 7. The turntable 6, the bearing 7, and the pin 12 are arranged coaxially. An angle sensor 4 is mounted on the turntable 6. The angle sensor 4 includes a housing 41 and a shaft 42. The housing 41 is fixedly connected to the turntable 6 by bolts 3. The shaft 42 passes through a through hole on the turntable 6, is inserted into the bearing 7, and is fixedly connected to the bearing 7. The first component 11 is connected to the turntable 6 via a lever 10.

[0026] The bearing seat 7 includes a turntable connecting part 71 and a fixing part 72. The turntable 6 has an inner cylindrical surface and is fitted onto the outer cylindrical surface of the turntable connecting part 71. The outer cylindrical surface and the inner cylindrical surface are in clearance fit, and the fit tolerance between the outer and inner cylindrical surfaces ensures both the relative rotation of the bearing seat 7 and the turntable 6 and the coaxiality of their centers. A step 73 is provided between the turntable connecting part 71 and the fixing part 72. A retaining ring 8 is installed on the turntable 6, extending into the step 73 to axially limit the turntable 6 and prevent axial movement.

[0027] The lever 10 includes a first part 101 and a second part 102. One end of the first part 101 is fixedly connected to the first component 11 via a fastener 9, and the other end is provided with a connecting pin 103. The second part 102 is provided with a strip groove 104, which is arranged radially along the turntable 6. The connecting pin 103 is inserted into the strip groove 104 and abuts against the strip groove 104. The connecting pin 103 has axial and radial clearances for movement, so that the connecting pin 103 can move up, down, left, or right accordingly with the movement of the first component 11. This eliminates the movement of the first component 11 at the connection between the first and second parts of the lever 10, and avoids the movement of the first component 11 affecting the coaxiality and detection accuracy of the housing 41 and the axis 42 of the angle sensor 4.

[0028] The connecting pin 103 is preferably a cylindrical pin, and the strip groove 104 is preferably a U-shaped groove. The connecting pin 103 is tangentially connected to the strip groove 104.

[0029] The turntable 6 has a process hole 61 to facilitate the fixing of the bearing seat 7 and the pin 12. During assembly, the turntable 6 and the bearing seat 7 are first assembled as one unit, and then the bearing seat 7 is fixed to the end of the pin 12 using bolts 5 passing through the process hole 61.

[0030] To protect the angle sensor 4, a protective cover 2 is installed on the angle sensor 4, and the protective cover 2 is fixed to the turntable 6 by bolts 1.

[0031] In use, the first component 11 rotates around the pin 12, and simultaneously drives the turntable 6 to rotate via the lever 10. As the turntable 6 rotates, it also rotates the housing 41 of the angle sensor 4, causing the housing 41 of the angle sensor 4 to rotate relative to the axis 42. Thus, the rotation angle of the first component 11 can be obtained through the angle sensor 4. Clearly, by applying the angle sensor mounting structure of this invention to the connection between the steering coupling disc and the outriggers of a vehicle, the rotation angle of the steering coupling disc and the wheel assembly connected to it can be obtained through the angle sensor 4.

[0032] like Figure 5As shown, one embodiment of the vehicle chassis of this utility model includes a center frame 20. One end of a support leg 21 is hinged to the front and rear sides of the center frame 20, respectively. A steering connecting plate 22 is hinged to the other end of each support leg 21. The steering connecting plate 22 is fixedly connected to a wheel assembly (not shown in the figure). Angle sensors are mounted on the hinge axis between the center frame 20 and the support leg 21, and on the hinge axis between the support leg 21 and the steering connecting plate 22, respectively, using the aforementioned angle sensor mounting structure. The angle sensor on the hinge axis between the center frame 20 and the support leg 21 is used to detect the extension angle of the support leg 21, thereby determining whether the support leg 21 is fully extended or retracted. The angle sensor on the hinge axis between the support leg 21 and the steering connecting plate 22 is used to detect the rotation angle of the steering connecting plate 22 and the wheel assembly connected to it.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model should fall within the protection scope of the technical solution of this utility model.

Claims

1. An angle sensor mounting structure, comprising a first component (11) and a second component (13), wherein the first component and the second component are hinged via a pin (12), characterized in that: A bearing seat (7) is fixedly installed on the pin, and a turntable (6) is rotatably installed on the bearing seat. The turntable, bearing seat, and pin are arranged along the same axis. An angle sensor (4) is installed on the turntable. The angle sensor includes a housing (41) and a shaft (42). The housing is fixedly connected to the turntable, and the shaft is fixedly connected to the bearing seat. The first component is connected to the turntable via a lever. The lever includes a first part (101) and a second part (102). A connecting pin (103) is provided on the first part, and a strip groove (104) is provided on the second part. The strip groove is arranged radially along the turntable. The connecting pin is located in the strip groove and abuts against the strip groove. The axial and radial clearances of the connecting pin are respectively provided for the connecting pin to move.

2. The angle sensor mounting structure according to claim 1, characterized in that, The bearing includes a turntable connecting part (71) and a fixing part (72). The turntable has an inner cylindrical surface and is sleeved on the outer cylindrical surface of the turntable connecting part. The outer cylindrical surface and the inner cylindrical surface are in clearance fit so that the bearing and the turntable can rotate relative to each other, and the bearing and the center of the turntable are coaxial.

3. The angle sensor mounting structure according to claim 2, characterized in that, A step is provided between the turntable connecting part and the fixed part, and a retaining ring (8) is installed on the turntable, the retaining ring extending into the step.

4. The angle sensor mounting structure according to claim 1, characterized in that, The first part is fixedly connected to the connecting pin, and the second part is fixedly connected to the turntable.

5. The angle sensor mounting structure according to claim 1, characterized in that, The connecting pin is a cylindrical pin, the strip groove is a U-shaped groove, and the connecting pin is tangentially connected to the strip groove.

6. The angle sensor mounting structure according to claim 1, characterized in that, The turntable has process holes (61) to facilitate the fixing of the bearing seat and the pin.

7. The angle sensor mounting structure according to claim 1, characterized in that, A protective cover (2) is installed on the angle sensor, and the protective cover is fixed on the turntable.

8. A vehicle chassis, comprising a center frame (20), with one end of a support leg (21) hinged to both sides of the center frame, and a steering coupling plate (22) hinged to the other end of the support leg, the steering coupling plate being fixedly connected to a wheel assembly, characterized in that, An angle sensor is mounted between the outrigger and the steering connecting plate via the angle sensor mounting structure described in any one of claims 1-7.

9. The vehicle chassis according to claim 8, characterized in that, An angle sensor is installed between the central frame and the support leg via the angle sensor mounting structure described in any one of claims 1-7.

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