Mounting structure for steering angle sensor of arm type aerial work platform

Abstract

The utility model relates to the field of engineering machinery, and discloses an arm type aerial work platform steering angle sensor installation structure which comprises a front axle, two steering knuckles and a steering connecting rod, the two steering knuckles and the steering connecting rod are arranged at the two ends of the front axle respectively, and the two steering knuckles are connected to the two ends of the steering connecting rod through pin shafts respectively. One pin shaft is connected with an angle sensor, a shell of the angle sensor is fixed to a sensor support, and the sensor support is fixed to the corresponding steering knuckle through a first screw. The sensor support adopts an assembly type adjustable connection mode to replace an existing welding connection mode, the installation precision of the angle sensor can be improved, installation is more convenient, and the problems that a sensor support in a welding mode is prone to deformation and unstable in installation precision are solved.

Description

Technical Field

[0001] The utility model relates to the field of engineering machinery, in particular to an installation structure of a steering angle sensor of an arm-type aerial work platform. Background Art

[0002] Aerial work platform is a widely used aerial work machine, which can greatly improve the work efficiency and safety of aerial construction. In the use of aerial work platform, steering is a very frequent action. Since there needs to be a differential between the inner and outer tires of the vehicle body during steering, an angle sensor is needed to sense the angle, thereby controlling the speed of the inner and outer reducers. The installation accuracy of the angle sensor is crucial. The angle sensor is fixed on the sensor bracket, but the existing sensor bracket is connected to the steering knuckle by welding. Since the sensor bracket is a thin plate, it is easy to deform due to heat during welding, making it difficult to ensure the installation accuracy of the angle sensor. Utility Model Content

[0003] The purpose of the utility model is to provide a steering angle sensor installation structure for an arm-type aerial work platform. The sensor bracket adopts an assembled adjustable connection method instead of the existing welding connection method, which can improve the installation accuracy of the angle sensor and make the installation more convenient, and solves the problem that the sensor bracket in the welding method is easy to deform and the installation accuracy is unstable.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A steering angle sensor mounting structure for an arm-type aerial work platform comprises a front axle, two steering knuckles respectively arranged at both ends of the front axle, and a steering connecting rod, wherein the two steering knuckles are respectively connected to the two ends of the steering connecting rod through a pin shaft; an angle sensor is connected to one of the pin shafts, a housing of the angle sensor is fixed on a sensor bracket, and the sensor bracket is fixed to the corresponding steering knuckle through a first screw.

[0006] The sensor bracket is fixed on the steering knuckle by the first screw, which can effectively improve the installation accuracy of the angle sensor and solve the problem that the existing sensor bracket is deformed due to welding and the installation accuracy of the angle sensor is difficult to control.

[0007] The utility model is further configured as follows: at least two waist-shaped holes are formed on the sensor bracket;

[0008] The first screw passes through the waist-shaped hole and is screwed on the steering knuckle.

[0009] By providing the waist-shaped hole, the position of the sensor bracket can be slightly adjusted when the sensor bracket is finally fixed, thereby further improving the installation accuracy of the angle sensor.

[0010] The utility model is further configured as follows: a connecting arm is formed on the steering knuckle, and a first through hole is formed on the connecting arm;

[0011] The steering link includes two symmetrically arranged long strips that are fixedly connected, and second through holes are formed at the ends of the long strips; the connecting arm is inserted between the ends of the two long strips; the pin shaft passes through the two second through holes, and the protruding end of the first through hole is sleeved with a locking pin, and the other end of the locking pin is sleeved with a second screw, and the second screw is screwed on the long strip.

[0012] The detection end of the angle sensor is inserted into the corresponding jack on the upper end of the pin shaft. A positioning groove is formed on the side wall of the jack. A positioning pin is sleeved in the positioning groove. The positioning pin is inserted into and fixed on the detection end of the angle sensor.

[0013] When the steering knuckle rotates, the steering link can be driven to move through the pin shaft. The pin shaft will deflect at a certain angle relative to the connecting arm. The housing of the angle sensor is fixed to the steering knuckle through the sensor bracket. The measuring end of the angle sensor will be driven by the pin shaft to measure the angle.

[0014] The utility model is further configured as follows: a first sleeve is provided between the upper end of the pin shaft and the sensor bracket; the first sleeve is fixed in the sensor bracket;

[0015] The middle part of the pin shaft is sleeved with a second shaft sleeve, and the second shaft sleeve is inserted into and fixed in the first through hole.

[0016] The first sleeve can avoid contact between the pin and the sensor bracket, reduce wear on the sensor bracket, and increase the service life of the sensor bracket;

[0017] The second shaft sleeve can be provided to prevent the pin shaft from directly rotating with the connecting arm, thereby reducing the wear on the connecting arm and increasing the service life of the steering knuckle.

[0018] The utility model is further configured as follows: a sensor shield is provided on the outer side of the angle sensor, and the sensor shield is fixed on the sensor bracket. The sensor shield can protect the angle sensor to prevent foreign objects from directly hitting the angle sensor during use.

[0019] The outstanding effects of the utility model are:

[0020] Compared with the existing technology, the sensor bracket adopts an assembled adjustable connection method instead of the existing welding connection method, which can improve the installation accuracy of the angle sensor and is more convenient to install, and solves the problem that the sensor bracket of the welding method is easy to deform and the installation accuracy is unstable;

[0021] By arranging a waist-shaped hole on the sensor bracket, the installation position of the sensor bracket can be slightly adjusted, which can further ensure the installation accuracy of the angle sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 for Figure 1 A partial enlarged view of A;

[0024] Figure 3 for Figure 2 About the cross-sectional view of BB;

[0025] Figure 4 It is an exploded view of the steering link, pin shaft, angle sensor, etc. of the utility model;

[0026] Figure 5 for Figure 4 A partial enlarged view of C;

[0027] Figure 6 for Figure 1 A partial enlarged view of D.

[0028] Reference numerals: 10, front axle; 11, steering knuckle; 12, pin; 13, steering link;

[0029] 111. connecting arm; 112. first through hole;

[0030] 121, jack; 122, positioning slot;

[0031] 131, long strip; 132, second through hole;

[0032] 20. Angle sensor; 21. Sensor bracket; 22. First screw; 23. Locking pin; 24. Second screw; 25. Positioning pin; 26. First sleeve; 27. Second sleeve; 28. Sensor shield;

[0033] 211, waist-shaped hole; DETAILED DESCRIPTION

[0034] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] The following references Figures 1 to 6 The utility model is described as follows:

[0036] A steering angle sensor installation structure for an arm-type aerial work platform comprises a front axle 10, two steering knuckles 11 and a steering link 13 respectively arranged at both ends of the front axle 10, wherein the two steering knuckles 11 are respectively connected to the two ends of the steering link 13 through a pin shaft 12; the characteristic is that an angle sensor 20 is connected to one of the pin shafts 12, the shell of the angle sensor 20 is fixed to a sensor bracket 21, the sensor bracket 21 is fixed to the corresponding steering knuckle 11 through a first screw 22, the detection end of the angle sensor 20 is inserted into a socket 121 at the upper end of the corresponding pin shaft 12, a positioning groove 122 is formed on the side wall of the socket 121, a positioning pin 25 is sleeved in the positioning groove 122, and the positioning pin 25 is inserted into and fixed on the detection end of the angle sensor 20.

[0037] Preferably, at least two waist-shaped holes 211 are formed on the sensor bracket 21;

[0038] The first screw 22 passes through the waist-shaped hole 211 and is screwed onto the steering knuckle 11 .

[0039] Preferably, a connecting arm 111 is formed on the steering knuckle 11, and a first through hole 112 is formed on the connecting arm 111;

[0040] The steering link 13 includes two symmetrically arranged long plates 131 that are fixedly connected, and a second through hole 132 is formed at the end of the long plate 131; the connecting arm 111 is inserted between the ends of the two long plates 131; the pin shaft 12 passes through the two second through holes 132, and the protruding end of the first through hole 112 is sleeved with a locking pin 23, and the other end of the locking pin 23 is sleeved with a second screw 24, and the second screw 24 is screwed on the long plate 131.

[0041] Preferably, a first sleeve 26 is provided between the upper end of the pin 12 and the sensor bracket 21; the first sleeve 26 is fixed in the sensor bracket 21;

[0042] A second sleeve 27 is sleeved on the middle portion of the pin shaft 12 , and the second sleeve 27 is inserted into and fixed in the first through hole 112 .

[0043] Preferably, a sensor shield 28 is provided on the outer side of the angle sensor 20 , and the sensor shield 28 is fixed on the sensor bracket 21 .

[0044] Angle sensor installation steps: After installing the left and right steering knuckles to the two ends of the front axle, insert the two ends of the steering link into the connecting arms of the two steering knuckles, and then insert the pin 12 into the first through hole of the connecting arm and the second through hole at the end of the steering link; insert the locking pin into the lower end of the pin, and the locking pin is connected to the steering link through the second screw;

[0045] Then insert the second sleeve into the sensor bracket, install the locating pin on the measuring end of the angle sensor, and then install the assembled whole on the sensor bracket. Then insert the measuring end of the angle sensor and the locating pin into the corresponding upper end of the pin shaft, and insert the locating pin into the locating groove at the upper end of the pin shaft. Finally, the sensor bracket is fixed to the steering knuckle by the first screw, and the sensor cover is fixed to the sensor bracket by the third screw.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A steering angle sensor mounting structure for an arm-type aerial work platform, comprising a front axle (10), two steering knuckles (11) and a steering link (13) respectively arranged at two ends of the front axle (10), wherein the two steering knuckles (11) are respectively connected to two ends of the steering link (13) through a pin shaft (12); characterized in that: An angle sensor (20) is connected to one of the pin shafts (12); a housing of the angle sensor (20) is fixed to a sensor bracket (21); and the sensor bracket (21) is fixed to a corresponding steering knuckle (11) via a first screw (22).

2. The steering angle sensor installation structure of an arm-type aerial work platform according to claim 1, characterized in that: At least two waist-shaped holes (211) are formed on the sensor bracket (21); The first screw (22) passes through the waist-shaped hole (211) and is screwed onto the steering knuckle (11).

3. The steering angle sensor installation structure of an arm-type aerial work platform according to claim 1, characterized in that: A connecting arm (111) is formed on the steering knuckle (11), and a first through hole (112) is formed on the connecting arm (111); The steering link (13) comprises two symmetrically arranged long strips (131) that are fixedly connected, and the ends of the long strips (131) are formed with second through holes (132); the connecting arm (111) is inserted between the ends of the two long strips (131); the pin shaft (12) passes through the two second through holes (132), and the protruding end of the first through hole (112) is sleeved with a locking pin (23), and the other end of the locking pin (23) is sleeved with a second screw (24), and the second screw (24) is screwed onto the long strips (131).

4. The steering angle sensor installation structure of an arm-type aerial work platform according to claim 3 is characterized in that: The detection end of the angle sensor (20) is inserted into a socket (121) at the upper end of the corresponding pin shaft (12); a positioning groove (122) is formed on the side wall of the socket (121); a positioning pin (25) is sleeved in the positioning groove (122); and the positioning pin (25) is inserted into and fixed on the detection end of the angle sensor (20).

5. The steering angle sensor installation structure of an arm-type aerial work platform according to claim 4, characterized in that: A first shaft sleeve (26) is provided between the upper end of the pin shaft (12) and the sensor bracket (21); the first shaft sleeve (26) is fixed in the sensor bracket (21); A second shaft sleeve (27) is sleeved on the middle portion of the pin shaft (12), and the second shaft sleeve (27) is inserted into and fixed in the first through hole (112).

6. The steering angle sensor installation structure of an arm-type aerial work platform according to claim 1, characterized in that: A sensor shield (28) is provided on the outer side of the angle sensor (20), and the sensor shield (28) is fixed on the sensor bracket (21).

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