Apparatus and method for implementing zoned jobs and increasing job extent

Abstract

This invention discloses an apparatus and method for implementing zoned operation and increasing the working range, including a detection device and a counterweight device. The detection device utilizes four sets of proximity switches and a stepped sector-shaped detection plate to achieve three-zone zoned operation through a series of logic steps. It utilizes the principle of a simply supported beam to detect the counterweight signal, thereby enabling different counterweights to increase the working range by different amounts. Through the combination of the above devices, three-zone zoned operation can be achieved, and the function of increasing the range in each of the three zones according to the added counterweight can be realized. While the three-zone division is achieved using proximity switches and a stepped sector-shaped detection plate, if this principle is used to achieve more than three zones, it is also within the scope of protection of this patent.

Description

Technical Field

[0001] This invention relates to the field of aerial work platforms, and more specifically to a device and method for realizing zoned operations and increasing the working range. Background Technology

[0002] Aerial work platforms, as specialized vehicles for carrying people to perform high-altitude operations, are increasingly replacing the previously highly dangerous climbing work methods. With the development of urban construction, aerial work platforms are not only used in large-scale infrastructure projects such as docks, airports, water conservancy, power stations, and landscaping, but are also widely used in the installation and management of urban facilities such as streetlights, communications, transportation, advertising, and photography.

[0003] Due to structural and overall layout limitations, the overall tilt stability of most aerial work platforms at maximum working range is: rear of the vehicle > side > front of the vehicle. Furthermore, different customers have different requirements for the maximum working range of the same class of vehicle in different operating scenarios and conditions.

[0004] Most commercially available zonal amplitude dividers use rotary encoders. (See [link]) Figure 5 Using encoders for work zoning presents the following problems: 1. Rotary encoders with memory function are expensive and require precise rotation to match the turntable. 2. Rotary encoders record and calculate the original and current angles through relative rotation with the slewing bearing. The initial angle needs zeroing, and after prolonged rotation, errors in the relative rotation ratio between the encoder and bearing accumulate, requiring recalibration of the zero point. Regarding fixed counterweights, the increase in magnitude can only be designed based on the weight of the counterweight in the initial design phase. This cannot meet the requirement of adding different counterweights to achieve different increases in magnitude. Summary of the Invention

[0005] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a device and method for achieving zoned operation and increasing the working range. This allows for segmented operation in different areas and also enables increasing the working range by adding different counterweights. It solves the problems of high machining accuracy requirements and program calibration for turntables, and also avoids the energy waste caused by fixed counterweights.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] This invention provides a device for realizing zoned operation and increasing the working range, including a detection device and a counterweight device; the detection device 1 includes a detection plate mounted on a subframe base and a switch mounting plate mounted on the bottom of a turntable, the bottom plate of the switch mounting plate is rotatably connected to the detection plate and has two rows of detection switches arranged in a rectangular array; when the detection switches rotate with the switch mounting plate and the turntable, their active areas are all in the same plane; the detection switches are electrically connected to the vehicle control system for detecting the working range of the turntable;

[0008] The counterweight device includes a counterweight mounting box fixed to the back of the turntable. The counterweight mounting box has a movable counterweight installed on it through a preset counterweight detection shaft and a counterweight fixing shaft. The counterweight detection shaft can detect the weight of the movable counterweight and provide the detection data to the vehicle control system, which is beneficial for the vehicle control system to adjust the working range according to the weight of the movable counterweight.

[0009] This invention provides a method for using an apparatus for implementing zoned operations and increasing the scope of operations, comprising the following steps:

[0010] Step 1: Install the detection device;

[0011] Step 2: Define the active area of ​​the outer detection switch as Region 1, and the active area of ​​the inner detection switch as Region 2. After removing Region 1 and Region 2, define the area outside the detection board as Region 3. The movement trajectory of the outer detection switch is trajectory line 1, and the detection area is Region 1 and Region 3. The movement trajectory of the inner detection switch is trajectory line 2, and the detection area is Region 2 and Region 3.

[0012] Step 3: Based on the above three areas, divide the maximum operating radius of the vehicle into L1, L2, and L3, with L1 > L2 > L3; the operating radius L of the vehicle in the three areas are 0~L1, 0~L2, and 0~L3, respectively.

[0013] Step 4: Implement task differentiation, specifically as follows:

[0014] 1) When the outer detection switch is in area one and there is a signal input, the operating range is 0≤L≤L1;

[0015] 2) The outer detection switch moves clockwise along the trajectory line. When the detection switch moves out of area 1, if the working range L > L2 at this time, clockwise rotation will be restricted, but counterclockwise rotation is allowed.

[0016] If L≤L2 at this time, it is allowed to continue rotating clockwise along the trajectory line 1; during this process, the inner detection switch is always in region 2 and rotates clockwise along the trajectory line 2 together; during this process, 0≤L≤L2;

[0017] 3) When the detection switch at the tail of the rotation direction moves out of area two, if the working amplitude L > L3 at this time, clockwise rotation will be restricted, but counterclockwise rotation is allowed; if L ≤ L3 at this time, clockwise rotation along trajectory line two is allowed; until all switches enter area three; during this process, 0 ≤ L ≤ L3;

[0018] 4) All detection switches can also rotate counterclockwise along the corresponding trajectory line, on the same principle as above;

[0019] 5) If a detection switch fails to detect a signal or is damaged, proceed with the maximum operating range L3;

[0020] When the detection switch at the front end of the rotation direction cannot detect the model or is damaged, but the detection switch at the rear end can detect the signal, it will operate at the maximum working amplitude L2, thereby ensuring the stability of the entire vehicle operation.

[0021] Preferably, a counterweight device and a counterweight detection device capable of obtaining the weight of the counterweight are installed on the back of the turntable;

[0022] Assuming the added weight is G, the increased working range for the three areas is calculated to be L1', L2', and L3'.

[0023] The original three work zones' maximum work ranges L1, L2, and L3 are transformed into: L1 + L1', L2 + L2', and L3 + L3'.

[0024] The detection device divides the working range of the vehicle into three areas. By adding different counterweights, the maximum working range of each area can be increased to meet the needs of different scenarios.

[0025] Preferably, the counterweight device includes a counterweight mounting box, a movable counterweight, a counterweight detection shaft, and a counterweight fixed shaft; the movable counterweight is mounted on the counterweight mounting box via the counterweight detection shaft and the counterweight fixed shaft; the counterweight mounting box is mounted on the back of the turntable; the counterweight detection device is selected from the counterweight detection shaft.

[0026] The counterweight detection shaft uses the principle of a simply supported beam to detect the weight of the movable counterweight and provides the detection data to the vehicle control system. Depending on the weight of the different counterweights, the operating range is increased accordingly.

[0027] Preferably, the switch mounting plate is equipped with four detection switches arranged in a rectangular array, and the detection switches rotate around the rotation center of the detection plate.

[0028] Preferably, the detection switches on the switch mounting plate are arranged in a square shape at the four corners of the switch mounting plate.

[0029] The beneficial effects of this invention are as follows:

[0030] 1. Using four sets of proximity switches and a stepped sector-shaped detection board, a series of logic steps are used to achieve zoned amplitude operation in three areas.

[0031] 2. By utilizing the principle of simply supported beams, the detection signal of the counterweight is realized, thereby enabling different counterweights to increase the working range.

[0032] 3. By combining the above devices, it is possible to achieve three-zone amplitude, and to increase the amplitude in the three zones according to the added counterweight.

[0033] 4. The three-zone division is achieved by using proximity switches and stepped sector-shaped detection boards. If this principle is used to achieve more than three zones, it is also within the scope of protection of this patent. Attached Figure Description

[0034] 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.

[0035] Figure 1 This is a schematic diagram of the installation of the detection device and the counterweight device provided in the embodiments of the present invention;

[0036] Figure 2 This is a schematic diagram of the detection switch position on the detection board provided in an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of region division provided in an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the counterweight device provided in an embodiment of the present invention;

[0039] Figure 5 The diagram below shows the structure of a rotary encoder used in the prior art, as provided in the embodiments of the present invention.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Detection device; 2. Counterweight device; 11. Switch mounting plate; 12. Detection switch; 12-1. First detection switch; 12-2. Second detection switch; 12-3. Third detection switch; 12-4. Fourth detection switch; 13. Detection plate; 21. Counterweight mounting box; 22. Movable counterweight; 23. Counterweight detection shaft; 24. Counterweight fixed shaft. Detailed Implementation

[0042] 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.

[0043] The present invention will now be described in detail with reference to the accompanying drawings and specific implementation examples.

[0044] This embodiment provides a device for implementing zoned operations and increasing the scope of operations;

[0045] The system includes a detection device 1 and a counterweight device 2. The detection device 1 includes a detection plate 13 mounted on a subframe base and a switch mounting plate 11 mounted on the bottom of a turntable. The bottom plate of the switch mounting plate 11 is rotatably connected to the detection plate 13 and has two rows of detection switches 12 arranged in a rectangular array. When the detection switches 12 rotate with the switch mounting plate 11 and the turntable, their active areas are all within the same plane. The detection switches 12 are electrically connected to the vehicle control system for detecting the working range of the turntable.

[0046] The counterweight device 2 includes a counterweight mounting box 21 fixed to the back of the turntable. The counterweight mounting box 21 is equipped with a movable counterweight 22 through a preset counterweight detection shaft 23 and a counterweight fixing shaft 24. The counterweight detection shaft 23 can detect the weight of the movable counterweight 22 and provide the detection data to the vehicle control system, which is beneficial for the vehicle control system to adjust the working range according to the weight of the movable counterweight 22.

[0047] This embodiment provides a method for using a device to achieve zoned operations and increase the range of operations. First, a detection device 1 and a counterweight device 2 are installed. For example... Figure 1 The detection device 1 is mounted on the turntable and the subframe. The turntable and the subframe base are connected by a slewing bearing, allowing the turntable to rotate relative to the subframe base via the slewing bearing. The counterweight device 2 is mounted on the back of the turntable and can rotate with the turntable.

[0048] like Figure 2 The detection device 1 includes: a switch mounting plate 11, four sets of detection switches 12, and a detection plate 13.

[0049] The detection switch 12 is mounted on the switch mounting plate 11, which is mounted on the bottom of the turntable. The detection plate 13 is mounted on the subframe base. The detection plate 11 and the detection switch 12 can rotate around the subframe base together with the turntable, so that different areas of the detection plate 13 can be detected by the four sets of detection switches 12 to obtain different signals, thereby realizing the segmentation of different working areas.

[0050] like Figure 3 The detection plate 13 is a stepped sector shape, divided into Region 1 and Region 2. The area outside of detection plate 13 is Region 3. The first detection switch 12-1, the second detection switch 12-2, the third detection switch 12-3, and the fourth detection switch 12-4 rotate around the rotation center. The movement trajectory of the first detection switch 12-1 and the third detection switch 12-3 is trajectory line 1, and the detection area is Region 1 and Region 3. The movement trajectory of the second detection switch 12-2 and the fourth detection switch 12-4 is trajectory line 2, and the detection area is Region 2 and Region 3. Based on the above three regions, the maximum operating radius of the vehicle is divided into L1, L2, and L3, where L1 > L2 > L3. The operating radius L of the vehicle in the three regions is 0~L1, 0~L2, and 0~L3, respectively.

[0051] Job partitioning principle:

[0052] 1) When the first detection switch 12-1 and the third detection switch 12-3 are in area one, both switches have signal input, and the operating range is 0≤L≤L1.

[0053] 2) The first detection switch 12-1 and the third detection switch 12-3 move clockwise along the trajectory line. When the first detection switch 12-1 moves out of area one, if the working amplitude L > L2 at this time, clockwise rotation will be restricted, but counterclockwise rotation is allowed. If L ≤ L2 at this time, clockwise rotation along the trajectory line is allowed to continue. During this process, the second detection switch 12-2 and the fourth detection switch 12-4 remain in area two and rotate clockwise along the trajectory line two together. During this process, 0 ≤ L ≤ L2.

[0054] 3) When the second detection switch 12-2 moves out of zone two, if the operating amplitude L > L3 at this time, clockwise rotation will be restricted, but counterclockwise rotation is allowed. If L ≤ L3 at this time, clockwise rotation along trajectory line two is allowed until all switches enter zone three. During this process, 0 ≤ L ≤ L3.

[0055] 4) All detection switches can also rotate counterclockwise along the corresponding trajectory line, on the same principle as above.

[0056] 5) If any detection switch 12 fails to detect a signal or is damaged, operate at the maximum operating range L3. If the first detection switch 12-1 and the third detection switch 12-3 fail to detect a signal or are damaged, but the second detection switch 12-2 and the fourth detection switch 12-4 can detect a signal, operate at the maximum operating range L2. This ensures the stability of the entire vehicle's operation.

[0057] like Figure 4 The movable counterweight device 2 includes a counterweight mounting box 21, a movable counterweight 22, a counterweight detection shaft 23, and a counterweight fixing shaft 24.

[0058] The movable counterweight 22 is hinged to the counterweight mounting box 21 via the counterweight detection shaft 23 and the counterweight fixing shaft 24. The counterweight mounting box 21 is bolted to the back of the turntable.

[0059] The counterweight detection shaft 23 utilizes the principle of a simply supported beam to detect the weight of the counterweight and provide the detected weight data to the vehicle control system. Different working ranges are increased based on the weight of the counterweight. Assuming the increased counterweight is G, the increased working ranges for the three areas are calculated to be L1', L2', and L3'.

[0060] The original maximum work ranges L1, L2, and L3 of the three work zones are transformed into: L1 + L1', L2 + L2', and L3 + L3'.

[0061] The detection device 1 divides the working range of the entire vehicle into three zones. The counterweight device 2 allows for the increase of the maximum working range in each zone by adding different counterweights, thereby meeting the needs of different scenarios.

[0062] 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 device for realizing zoned operations and increasing the scope of operations, characterized in that, The system includes a detection device (1) and a counterweight device (2). The detection device (1) includes a detection plate (13) mounted on the subframe base and a switch mounting plate (11) mounted on the bottom of the turntable. The bottom plate of the switch mounting plate (11) is rotatably connected to the detection plate (13) and has two rows of detection switches (12) arranged in a rectangular array. When the detection switches (12) rotate with the switch mounting plate (11) and the turntable, their active areas are all in the same plane. The detection switches (12) are electrically connected to the vehicle control system for detecting the working range of the turntable. The counterweight device (2) includes a counterweight mounting box (21) fixed on the back of the turntable. The counterweight mounting box (21) has a movable counterweight (22) installed on it through a preset counterweight detection shaft (23) and a counterweight fixing shaft (24). The counterweight detection shaft (23) can detect the weight of the movable counterweight (22) and provide the detection data to the vehicle control system, which is beneficial for the vehicle control system to adjust the working range according to the weight of the movable counterweight (22).

2. The apparatus for implementing zoned operations and increasing the scope of operations as described in claim 1, characterized in that, The detection plate (13) has a fan-shaped structure, and the bottom plate of the switch mounting plate (11) is rotatably connected to the middle position of the detection plate (13).

3. The apparatus for implementing zoned operations and increasing the scope of operations as described in claim 1, characterized in that, Four detection switches (12) arranged in a rectangular array are mounted on the switch mounting plate (11), and the detection switches (12) rotate around the rotation center of the detection plate (13).

4. The apparatus for realizing zoned operations and increasing the scope of operations as described in claim 3, characterized in that, The detection switches (12) on the switch mounting plate (11) are arranged in a square shape at the four corners of the switch mounting plate (11).

5. A method of using the apparatus for implementing zoned operations and increasing the scope of operations as described in claim 4, characterized in that, Includes the following steps: Step 1: Set the active area of ​​the outer detection switch (12) as Region 1, set the active area of ​​the inner detection switch (12) as Region 2, and set the area outside the detection plate (13) as Region 3 after removing Region 1 and Region 2; the movement trajectory of the outer detection switch (12) is trajectory line 1, and the detection area is Region 1 and Region 3; the movement trajectory of the inner detection switch (12) is trajectory line 2, and the detection area is Region 2 and Region 3. Step 2: Based on the above three areas, divide the maximum operating radius of the vehicle into L1, L2, and L3, with L1 > L2 > L3; the operating radius L of the vehicle in the three areas are 0~L1, 0~L2, and 0~L3, respectively. Step 3: Implement task differentiation, specifically as follows: 1) When the outer detection switch (12) is in area one and there is a signal input, the working range is 0≤L≤L1; 2) The outer detection switch (12) moves clockwise along the trajectory line. When the detection switch (12) moves out of area 1, if the working range L>L2 at this time, clockwise rotation will be restricted, but counterclockwise rotation is allowed. If L≤L2 at this time, it is allowed to continue to rotate clockwise along the trajectory line 1; during this process, the inner detection switch (12) is always in region 2, and rotates clockwise along the trajectory line 2 together; during this process, 0≤L≤L2; 3) When the detection switch (12) at the tail of the rotation direction moves out of the second region, if the working amplitude L>L3 at this time, clockwise rotation will be restricted, but counterclockwise rotation is allowed; if L≤L3 at this time, clockwise rotation along the second trajectory line is allowed; until all detection switches (12) enter the third region; during this process, 0≤L≤L3; 4) When all the detection switches (12) rotate counterclockwise along the corresponding trajectory lines, the principle is the same as above; 5) When a certain detection switch (12) fails to detect a signal or is damaged, proceed according to the maximum operating range L3; When the detection switch (12) at the front end of the rotation direction cannot detect the model or is damaged, but the detection switch (12) at the rear end can detect the signal, it will operate at the maximum working amplitude L2, thereby ensuring the stability of the whole vehicle operation.

6. A method of using the device for realizing zoned operations and increasing the scope of operations as described in claim 5, characterized in that, The counterweight detection axis (23) uses the principle of simply supported beam to detect the weight of the movable counterweight (22). Assuming the weight of the increased movable counterweight (22) is G, the increased working range of the three areas is L1', L2', and L3' through conversion. The original three working zones' maximum working ranges L1, L2, and L3 are transformed into: L1 + L1', L2 + L2', and L3 + L3'. The working range of the whole vehicle is divided into three areas by the detection device (1), and different counterweights are added by the counterweight device (2) to increase the maximum working range of each area and meet the needs of different scenarios.

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