A high-altitude operation turntable rotation detection device and method

Abstract

The application discloses a high-altitude operation rotary table rotation detection device and method, the device comprises a support plate fixedly connected with a rotary support, a rotary detection plate is fixed above the support plate, the rotary detection plate is semicircular and is matched with the rotary radius of a rotary table rotary body, the rotary detection plate does not move when a high-altitude vehicle rotary mechanism rotates, a first proximity switch and a second proximity switch are arranged on the rotary table of the rotary mechanism, and the first proximity switch and the second proximity switch detect movement above the rotary detection plate when the rotary mechanism rotates; two proximity switches are used to detect left and right areas, the extension state of left and right horizontal supporting legs is matched, one-side area protection operation is carried out, dangerous direction operation is limited after the rotary table enters a dangerous area, but the rotary table can rotate in a safe direction, and whole vehicle rotation operation can be ensured.

Description

Technical Field

[0001] This invention relates to the field of high-altitude work turntable rotation detection devices and methods, specifically to a high-altitude work turntable rotation detection device and method. Background Technology

[0002] Single-sided area operations of vehicle-mounted aerial work platforms are more common during vehicle use. Currently, the commonly used technical means is to use encoders to calculate the rotation angle of the turntable to perform single-sided area operations and determine the rotation area. Summary of the Invention

[0003] To address the aforementioned technical shortcomings, the present invention aims to provide a high-altitude work turntable rotation detection device and method. It uses two proximity switches to detect left and right areas, and coordinates with the extension status of the left and right horizontal outriggers to perform unilateral area protection operations. After rotating into a dangerous area, it restricts operations in the dangerous direction, but can rotate in a safe direction to ensure that the entire vehicle can be rotated.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This invention provides a high-altitude work platform rotation detection device and method. The device includes a support plate fixedly connected to a rotation support, and a rotation detection plate fixed on the support plate. The rotation detection plate is semi-circular and adapted to the rotation radius of the turntable. When the high-altitude work platform rotation mechanism is rotating, the rotation detection plate does not move. A first proximity switch and a second proximity switch are provided on the turntable of the rotation mechanism. The first proximity switch and the second proximity switch are communicatively connected to the vehicle controller. When the high-altitude work platform rotation mechanism is rotating, the first proximity switch and the second proximity switch detect the movement above the rotation detection plate.

[0006] When the upper structure rotates, i.e., when it is rotating at the initial zero-degree position, the first proximity switch and the second proximity switch are respectively arranged at the left end of the rotation detection plate, and the first proximity switch can detect the rotation detection plate, while the second proximity switch is suspended; the method is based on the four extension methods of the vehicle's horizontal outriggers, specifically as follows:

[0007] When both horizontal outriggers of the vehicle are fully extended, the aerial work platform can rotate freely without restriction.

[0008] When both horizontal outriggers of the vehicle are not extended, the left and right rotation of the aerial work platform is restricted, and the vehicle is not allowed to rotate.

[0009] When the right horizontal outrigger of the vehicle is extended into position and the left horizontal outrigger is not extended, the controller controls the safe direction of the superstructure rotation based on the signal changes of the first and second proximity switches.

[0010] When the left horizontal outrigger of the vehicle is extended and the right horizontal outrigger is not extended, the controller controls the safe direction of the superstructure rotation based on the signal changes of the first and second proximity switches.

[0011] Preferably, when the right horizontal outrigger of the vehicle is extended and the left horizontal outrigger is not extended, the specific control method is as follows:

[0012] In the initial state of 0 degrees rotation, the controller receives the signal from the first proximity switch but does not receive the detection signal from the second proximity switch. At this time, the controller determines that the upper structure is in the initial state of 0 degrees rotation. Since the right horizontal outrigger is fully extended, the controller outputs a rotation control signal, allowing only rightward rotation in a safe direction and prohibiting leftward movement.

[0013] When the upper structure rotates from the initial 0-degree state to the right area, the first proximity switch and the second proximity switch simultaneously detect the rotation detection plate. The controller simultaneously receives the signals from the first proximity switch and the second proximity switch. At this time, the controller determines that the upper structure has entered the right area, and both left and right rotation operations can be carried out normally.

[0014] When the upper structure continues to rotate to the right in the right area, when it has rotated to 180 degrees, the first proximity switch disengages from the rotation detection plate, while the second proximity switch remains in contact with the rotation detection plate. The controller receives the signal from the second proximity switch but does not receive the signal from the first proximity switch, and determines that the rotation in the right area has been completed, thus restricting right rotation and allowing only left rotation.

[0015] Preferably, when the left horizontal outrigger of the vehicle is extended and the right horizontal outrigger is not extended, the specific control method is as follows:

[0016] In the initial state of 0 degrees rotation, the controller receives the signal from the first proximity switch but does not receive the detection signal from the second proximity switch. At this time, the controller determines that the upper structure is in the initial state of 0 degrees rotation. Since the left horizontal outrigger is fully extended, the controller outputs a rotation control signal, allowing only leftward rotation in a safe direction and prohibiting rightward movement.

[0017] When the upper structure rotates from the initial 0-degree state to the left region, the first proximity switch and the second proximity switch simultaneously disengage from the rotation detection plate. The controller does not receive signals from the first proximity switch and the second proximity switch at the same time. At this time, the controller determines that the upper structure has entered the left region, and both left and right rotation operations can be carried out normally.

[0018] When the upper structure continues to turn left in the left area, when it turns 180 degrees, the second proximity switch detects the rotation detection plate, while the first proximity switch remains off the rotation detection plate. The controller receives the signal from the second proximity switch but does not receive the signal from the first proximity switch, and determines that the left area rotation has been completed, thus restricting left rotation and allowing only right rotation.

[0019] Preferably, both the first proximity switch and the second proximity switch are normally open PNP proximity switches, and a high-level signal is generated and sent to the controller when the first proximity switch and the second proximity switch are above the rotary detection plate.

[0020] Preferably, the support plate is also semi-circular in structure, and the support plate and the rotation detection plate above it are fixedly connected by several connecting columns.

[0021] The advantages of this invention are as follows: It uses two proximity switches for left and right area detection, combined with the extension status of the left and right horizontal outriggers, to perform unilateral area protection operations. After rotating into a dangerous area, it restricts operation in the dangerous direction, but allows rotation in a safe direction, ensuring that the entire vehicle can be rotated. Compared to conventional encoder rotation detection, it has a simpler structure, is easier to install, and has lower costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a high-altitude operation turntable rotation detection device provided in an embodiment of the present invention;

[0024] Figure 2 This is a diagram showing the vehicle with both horizontal outriggers extended to their full positions.

[0025] Figure 3 This is a schematic diagram showing the vehicle with both horizontal outriggers not extended.

[0026] Figure 4 This diagram shows the vehicle with the right horizontal outrigger extended in place and the left horizontal outrigger not extended.

[0027] Figure 5 This is a schematic diagram showing the positions of the first and second proximity switches in the initial state of 0 degrees rotation.

[0028] Figure 6 This is a schematic diagram showing the positions of the two proximity switches when the upper structure rotates from its initial 0-degree position to the right.

[0029] Figure 7 This is a schematic diagram showing the position of the proximity switch when the upper structure rotates to 180 degrees in the right-side area.

[0030] Figure 8This diagram shows the vehicle with its left horizontal outrigger extended and its right horizontal outrigger not extended.

[0031] Figure 9 This is a schematic diagram showing how two proximity switches simultaneously disengage from the detection plate after the upper structure rotates from its initial 0-degree position to the left.

[0032] Figure 10 The diagram shows the positions of the two proximity switches when the upper structure continues to rotate to the left in the left-side area, reaching 180 degrees.

[0033] Figure 11 This is a flowchart of a testing method for a high-altitude work turntable rotation testing device.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Support plate; 2. Rotation detection plate; 3. First detection switch; 4. Second detection switch. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figure 1 As shown, a high-altitude work platform rotation detection device and method are disclosed. The device includes a support plate 1 fixedly connected to a rotation support. A rotation detection plate 2 is fixed on the support plate 1. The rotation detection plate 2 is semi-circular and adapted to the rotation radius of the turntable. When the high-altitude work platform rotation mechanism is rotating, the rotation detection plate 2 does not move. A first proximity switch 3 and a second proximity switch 4 (hereinafter referred to as the first switch and the second switch) are provided on the turntable of the rotation mechanism. The first proximity switch 3 and the second proximity switch 4 are communicatively connected to the vehicle controller. When the high-altitude work platform rotation mechanism is rotating, the first proximity switch 3 and the second proximity switch 4 detect the movement above the rotation detection plate 2.

[0038] When the upper structure rotates, i.e., when it is rotating at the initial zero-degree rotation position, the first proximity switch 3 and the second proximity switch 4 are respectively arranged at the left end of the rotation detection plate 2, and the first proximity switch 3 can detect the rotation detection plate 2, while the second proximity switch 4 is suspended; the method is based on the four extension methods of the vehicle's horizontal outriggers, specifically as follows:

[0039] like Figure 2 As shown, when both horizontal outriggers of the vehicle are fully extended, the aerial work platform can rotate freely without restriction.

[0040] like Figure 3 As shown, when both horizontal outriggers of the vehicle are not extended, the left and right rotation of the aerial work platform is restricted, and the vehicle is not allowed to rotate.

[0041] like Figure 4 As shown, when the right horizontal outrigger of the vehicle is extended and the left horizontal outrigger is not extended, the controller needs to control the safe direction of the superstructure's rotation based on the signal changes of the first proximity switch 3 and the second proximity switch 4. The specific control method is as follows:

[0042] 1) In the initial state of 0 degrees rotation, such as Figure 5 As shown, the controller receives the signal from the first proximity switch 3 but does not receive the detection signal from the second proximity switch 4. At this time, the controller determines that the upper structure is in the initial state of 0 degrees rotation. Since the right horizontal outrigger is fully extended, the controller outputs a rotation control signal, allowing only rightward rotation in a safe direction and prohibiting leftward movement.

[0043] 2) After the upper garment rotates from its initial 0-degree position to the right, as follows: Figure 6 As shown, the first proximity switch 3 and the second proximity switch 4 simultaneously detect the rotation detection plate 2, and the controller simultaneously receives the signals from the first proximity switch 3 and the second proximity switch 4. At this time, the controller determines that the upper part has entered the right side area, and both left and right rotation operations can be carried out normally.

[0044] 3) When the upper garment continues to turn right in the right-side area, such as... Figure 7 As shown, when the rotation reaches 180 degrees, the first proximity switch 3 disengages from the rotation detection plate 2, while the second proximity switch 4 remains in contact with the rotation detection plate 2. The controller receives the signal from the second proximity switch 4 but does not receive the signal from the first proximity switch 3, thus determining that the right rotation has been completed and restricting right rotation, allowing only left rotation.

[0045] like Figure 8 As shown, when the left horizontal outrigger of the vehicle is extended and the right horizontal outrigger is not extended, the controller needs to control the safe direction of the superstructure's rotation based on the signal changes of the first proximity switch 3 and the second proximity switch 4. The specific control method is as follows:

[0046] 1) In the initial state of 0 degrees rotation, such as Figure 5 As shown, the controller receives the signal from the first proximity switch 3 but does not receive the detection signal from the second proximity switch 4. At this time, the controller determines that the upper structure is in the initial state of 0 degrees of rotation. Since the left horizontal outrigger is fully extended, the controller outputs a rotation control signal, allowing only leftward rotation in a safe direction and prohibiting rightward movement.

[0047] 2) After the upper garment rotates from its initial 0-degree position to the left, as follows: Figure 9As shown, the first proximity switch 3 and the second proximity switch 4 simultaneously disengage from the slewing detection plate 2, and the controller does not receive signals from the first proximity switch 3 and the second proximity switch 4 at the same time. At this time, the controller determines that the upper part has entered the left side area, and both left and right slewing operations can be carried out normally.

[0048] 3) When the upper garment continues to turn left in the left-side area, such as... Figure 10 As shown, when the rotation reaches 180 degrees, the second proximity switch 4 detects the rotation detection plate 2, while the first proximity switch 3 remains disengaged from the rotation detection plate 2. The controller receives the signal from the second proximity switch 4 but does not receive the signal from the first proximity switch 3, thus determining that the left rotation has been completed and restricting left rotation, allowing only right rotation.

[0049] This invention, through the above method, can limit dangerous turning directions after entering a hazardous area during unilateral operation, but allows movement in a safe direction, ensuring that the turn can exit the hazardous area. The specific flowchart is as follows: Figure 11 As shown.

[0050] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A high-altitude work turret rotation detection method, characterized by, The device applied to the high-altitude operation rotary table rotation detection method comprises a support plate (1) fixedly connected with a rotary support, a rotary detection plate (2) is fixed above the support plate (1), the rotary detection plate (2) is semicircular and is matched with the rotary radius of the rotary body of the rotary table, the rotary detection plate (2) does not move when the high-altitude vehicle rotary mechanism rotates, a first proximity switch (3) and a second proximity switch (4) are arranged on the rotary table of the rotary mechanism, the first proximity switch (3) and the second proximity switch (4) are in communication connection with a vehicle controller, and the first proximity switch (3) and the second proximity switch (4) detect the movement above the rotary detection plate (2) when the high-altitude vehicle rotary mechanism rotates; When the upper-mounted rotary table rotates at the initial rotary position of zero degree, the first proximity switch (3) and the second proximity switch (4) are arranged at the left end of the rotary detection plate (2) respectively, the first proximity switch (3) can detect the rotary detection plate (2), and the second proximity switch (4) is in the air; the method comprises the following steps according to four extension modes of the horizontal support legs of the vehicle: When the horizontal support legs of the vehicle on both sides are extended to the position, the upper-mounted rotary table of the high-altitude vehicle is not limited and can rotate arbitrarily; When the horizontal support legs of the vehicle on both sides are not extended, the left and right rotations of the upper-mounted rotary table of the high-altitude vehicle are limited, and the vehicle is not allowed to rotate; When the right horizontal support leg of the vehicle is extended to the position and the left horizontal support leg is not extended, the controller controls the safe direction of the rotation of the upper-mounted rotary table according to the signal change state of the first proximity switch (3) and the second proximity switch (4); When the left horizontal support leg of the vehicle is extended to the position and the right horizontal support leg is not extended, the controller controls the safe direction of the rotation of the upper-mounted rotary table according to the signal change state of the first proximity switch (3) and the second proximity switch (4); When the right horizontal support leg of the vehicle is extended to the position and the left horizontal support leg is not extended, the specific control method is as follows: In the initial state of rotation of zero degree, the controller receives the signal of the first proximity switch (3) and does not receive the detection signal of the second proximity switch (4), at this time, the controller judges that the initial state of rotation of zero degree is the upper-mounted rotation, because the right horizontal support leg is fully extended, the controller outputs the rotation control signal, only allows the right rotation direction movement to the safe direction, and prohibits the left movement; When the upper-mounted rotary table moves to the right area from the initial state of rotation of zero degree, the first proximity switch (3) and the second proximity switch (4) detect the rotary detection plate (2) at the same time, the controller receives the signals of the first proximity switch (3) and the second proximity switch (4) at the same time, at this time, the controller judges that the upper-mounted rotary table enters the right area, and the left and right rotation operations can be normally performed; When the upper-mounted rotary table continues to rotate to the right in the right area, when the rotary table rotates to 180 degrees, the first proximity switch (3) is separated from the rotary detection plate (2), the second proximity switch (4) still contacts the rotary detection plate (2), the controller receives the signal of the second proximity switch (4) but does not receive the signal of the first proximity switch (3), judges that the right area rotation has been rotated to the position, limits the right rotation, and only allows the left rotation; When the left horizontal support leg of the vehicle is extended to the position and the right horizontal support leg is not extended, the specific control method is as follows: In the initial state of 0 degree rotation, the controller receives the signal of the first proximity switch (3) and does not receive the detection signal of the second proximity switch (4), at this time the controller judges that it is the initial state of 0 degree rotation of the upper part, and since the left horizontal supporting leg is fully extended, the controller outputs the rotation control signal, only allowing movement in the safe direction of left rotation, and prohibiting movement to the right; When the upper part rotates from the initial state of 0 degree to the left area, the first proximity switch (3) and the second proximity switch (4) are simultaneously separated from the rotation detection plate (2), and the controller does not receive the signals of the first proximity switch (3) and the second proximity switch (4) at the same time, at this time the controller judges that the upper part enters the left area, and the left and right rotation operations can be normally performed; When the upper part continues to rotate to the left in the left area, when it rotates to 180 degrees, the second proximity switch (4) detects the rotation detection plate (2), and the first proximity switch (3) is still separated from the rotation detection plate (2), the controller receives the signal of the second proximity switch (4) but does not receive the signal of the first proximity switch (3), judges that the left area rotation has been rotated to the position, limits the left rotation, and only allows right rotation.

2. The high-altitude work turret rotation detection method according to claim 1, characterized by, The first proximity switch (3) and the second proximity switch (4) are both PNP normally open proximity switches, when the first proximity switch (3) and the second proximity switch (4) are above the rotation detection plate (2), high-level signals are generated to enter the controller.

3. The high-altitude work turret rotation detection method according to claim 1, characterized by, The support plate (1) is also semicircular, and the support plate (1) and the rotation detection plate (2) above it are fixedly connected by a plurality of connecting columns.

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