An insulated bucket arm vehicle bucket end rotation detection device and control system

Abstract

The present invention discloses a device and control system for detecting bucket end rotation of an insulated boom truck. The device comprises a main insulated arm, a leveling support, a crank arm structure, a rotating bracket, and a working bucket. The lower portion of the leveling support is longitudinally hinged to the main insulated arm, and the upper portion is laterally rotatably connected to the crank arm structure. The rotating bracket is fixed to the working bucket and laterally rotatably connected to the crank arm structure. The working bucket is mounted with a controller, the rotating bracket is provided with an optical fiber amplifier, the main insulated arm is provided with a main insulated arm angle detection bar, a laser probe is mounted on the side of the leveling support, the crank arm rotation detection bar is fixed to the leveling support, two laser probes are mounted on the crank arm rotating base, a bracket rotation detection block is fixed to the bracket rotating base, and the rotating bracket is provided with two sets of proximity switches. The present invention detects the crank arm rotation angle and the working bucket rotation angle. Combined with control logic preset in the controller, the device limits the extreme positions of the crank arm rotation and the working bucket rotation under different conditions to prevent the boom truck from colliding with itself.

Description

Technical Field

[0001] The invention relates to a detection and control system for an insulating bucket arm bucket end rotation device, belonging to the field of automatic control and detection of insulating bucket arm vehicles. Background Art

[0002] Insulated boom trucks are essential equipment for live-line operations. They can safely and efficiently transport live-line operators to high-altitude work sites for live-line operations. At the same time, their insulated arms provide insulation from the ground for live-line operators, a crucial safety feature of live-line operations. Due to the complexity of overhead power lines, common situations such as high- and low-voltage cables being installed on the same pole and obstructed by trees are not conducive to high-altitude operations. Furthermore, there are many layouts of three-phase cables in overhead lines. Therefore, the bucket end of the insulated boom truck needs to have as many degrees of freedom as possible to avoid obstacles and avoid the risk of interphase electric shock from contacting two phases of cables at the same time. To meet the needs of this special working condition of live-line operations, insulated boom trucks with horizontally swivel booms and swivel brackets have appeared on the market. The boom insulation section is set to achieve safe interphase insulation.

[0003] The use of a horizontally rotatable boom and bracket increases the working freedom of the working bucket. However, this also brings about the problem of interference with the boom truck's own structure. The use of an insulating boom makes it impossible for the traditional electronic detection switch to transmit the boom's rotation angle to the control system in the form of an electrical signal, thus failing to realize the detection function of the boom's rotation. The only way to prevent the boom truck from colliding with itself is through careful operation. When operating a boom truck during operation, personnel must pay attention to the surrounding working environment to avoid collisions with surrounding objects, as well as the boom truck's own state to avoid collisions. This makes operation difficult and requires extreme caution, posing a safety hazard. Summary of the Invention

[0004] The purpose of the present invention is to address the shortcomings of the existing technology by providing an insulated boom truck bucket end rotation detection device and control system. This device can detect the crank arm rotation angle and the working bucket rotation angle. Combined with the control logic preset by the controller, it limits the extreme positions of the crank arm rotation and the working bucket rotation under different conditions to prevent the boom truck from colliding with itself. In addition, the detection of the crank arm rotation angle uses optical signals as the transmission carrier, which solves the problem that the insulated crank arm cannot transmit electrical signals. This simplifies the difficulty of operating the equipment for live workers and improves work safety and efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An insulated bucket arm vehicle bucket end rotation detection device comprises a main insulating arm, a leveling support, a crank arm structure, a rotating bracket, and a working bucket, wherein the leveling support is located at one end of the crank arm structure, the lower part of the leveling support is longitudinally hinged to the main insulating arm, and the upper part is laterally rotatably connected to the crank arm structure, the rotating bracket is fixed to the working bucket and laterally rotatably connected to the other end of the crank arm structure, and is characterized in that: the crank arm structure is divided into a crank arm rotating seat, a crank arm insulating section, a bracket rotating seat, the crank arm rotating seat is laterally rotatably connected to the leveling support, and the bracket rotating seat is laterally rotatably connected to the rotating bracket; a controller is installed on the working bucket, three optical fiber amplifiers are provided on the rotating bracket, and each optical fiber amplifier is connected to the controller by a line; a main insulating arm angle detection strip is provided near the leveling support on the main insulating arm, and a first laser for detecting the main insulating arm angle detection strip is installed on the side of the leveling support Probe, a crank arm rotation detection strip is provided at the connection between the leveling support and the crank arm swivel seat, the crank arm rotation detection strip is fixed on the leveling support, and two second laser probes for detecting the crank arm rotation detection strip are installed on the crank arm swivel seat, wherein an optical fiber is connected between the first laser probe and an optical fiber amplifier, and an optical fiber is connected one to one between the two second laser probes and the other two optical fiber amplifiers; a bracket rotation detection block is provided at the connection between the bracket swivel seat and the swivel bracket, the bracket rotation detection block is fixed on the bracket swivel seat, one side of the bracket rotation detection block is a thick edge and the other side is a thin edge, the swivel bracket has two groups of proximity switches arranged side by side, the proximity switches are used to detect the bracket rotation detection block, the swivel bracket moves in a circular direction relative to the bracket swivel seat, and when the proximity switch detects the thick edge area of ​​the bracket rotation detection block, it can send an electrical signal to the controller.

[0007] As a further preferred solution, the main insulating arm angle detection strip is made of two materials: high-reflective and low-reflective materials.

[0008] As a further preferred solution, the crank arm rotation detection strip is made of two materials: high-reflective and low-reflective materials.

[0009] As a further preferred solution, three optical fibers are arranged in the insulating section of the curved arm.

[0010] A control system for an insulated bucket arm vehicle end rotation detection device comprises a detection bar module, a sensing module, and a control module. The detection bar module comprises a crank arm rotation detection bar, a main insulating arm angle detection bar, and a bracket rotation detection block. The sensing module comprises a first laser probe, a second laser probe, and a proximity switch. The control module comprises an optical fiber amplifier and a controller. The second laser probe and the optical fiber amplifier are connected via an optical fiber, and the optical fiber amplifier and the controller are connected via a cable. The second laser probe corresponds to the crank arm rotation detection bar. The first laser probe and the optical fiber amplifier are connected via an optical fiber, and the optical fiber amplifier and the controller are connected via a cable. The first laser probe corresponds to the main insulating arm angle detection bar. The proximity switch is connected to the controller via a cable, and the proximity switch corresponds to the bracket rotation detection block.

[0011] Beneficial Effects: Compared to existing technologies, the insulated bucket arm vehicle end rotation detection device and control system of this invention utilizes a laser probe, detection strip, and fiber optic amplifier to achieve signal transmission across the insulation section. Two different reflective materials on the detection strip are used to distinguish between safe and dangerous areas. Combined with the rotational restrictions preset within the controller for the main insulating arm, curved arm, and bracket, this prevents interference between structural components. This improves product intelligence, simplifies operator operation, and enhances operational efficiency and safety.

[0012] The present invention realizes detection of the rotation angle of the crank arm and the working bucket, and limits the extreme positions of the crank arm rotation and the working bucket rotation under different states in combination with the control logic preset by the controller, thereby avoiding collision of the boom truck itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a side view of the present invention;

[0014] Figure 2 A top view of the internal structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the module of the present invention;

[0016] Among them, 1. Main insulating arm, 2. Leveling support, 3. Crank arm structure, 31. Crank arm rotation seat, 32. Crank arm insulation section, 33. Bracket rotation seat, 4. Rotating bracket, 5. Working bucket, 6. Crank arm rotation detection strip, 7. Main insulating arm angle detection strip, 81. First laser probe, 82. Second laser probe, 9. Optical fiber, 10. Optical fiber amplifier, 11. Bracket rotation detection block, 12. Proximity switch, 13. Controller. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] The main insulating arm 1 is connected to the leveling support 2, and the leveling support 2 can rotate relative to the main insulating arm 1. When the angle of the main insulating arm 1 relative to the ground changes, the leveling support 2 is always horizontal relative to the ground.

[0019] The crank arm structure consists of a crank arm swivel mechanism, an insulating crank arm section, and a bracket swivel base. The crank arm structure 3 is connected to the leveling support 2 via the crank arm swivel mechanism 31, allowing the crank arm structure 3 to swivel and swing relative to the leveling support in the horizontal plane. The middle of the crank arm structure 3 is the insulating crank arm section 32, and the other end of the crank arm structure 3 is the bracket swivel base 33. The crank arm structure 3 is connected to the swivel bracket 4 via the bracket swivel base 33, allowing the swivel bracket 4 to swivel and swing relative to the crank arm structure 3 in the horizontal plane. The swivel bracket 4 is fixedly connected to the working bucket 5.

[0020] A main insulating arm angle detection strip 7 is installed at the connection between the main insulating arm 1 and the leveling seat 2. The main insulating arm angle detection strip is fixed to the main insulating arm 1. A first laser probe 81 is installed on the leveling seat 2. The first laser probe 81 is connected to the fiber amplifier 10 via an optical fiber 9 through the curved arm insulation section 32. The fiber amplifier 10 can emit laser light to the first laser probe 81 via a cable and collect the reflected light collected by the first laser probe 81. The first laser probe 81 projects laser light onto the main insulating arm angle detection strip 7. The main insulating arm angle detection strip 7 is composed of two materials, high-reflective and low-reflective. Therefore, the first laser probe 81 can collect reflected light of different intensities in different areas and transmit the signal to the fiber amplifier 10 via the optical fiber 9. The fiber amplifier 10 outputs different electrical signals to the controller 13 based on the difference in the emitted light. For ease of description, the area with high-reflective material is set as the danger zone.

[0021] A crank arm rotation detection strip 6 is installed at the connection between the leveling base 2 and the crank arm rotation base 31. Two sets of second laser probes 82, arranged side by side, are mounted on the crank arm rotation base 31. The crank arm rotation detection strip 6 is fixedly connected to the leveling base 2, and the second laser probes 82 can rotate relative to the leveling base 2. The rotation detection strip 6 is composed of two materials, high-reflective and low-reflective. The detection principle is the same as that of the main insulating arm angle detection. For ease of description, the two ends are assumed to be high-reflective material. When the second laser probe 82 detects high-reflective material, it indicates the danger zone for crank arm rotation.

[0022] Specifically, the laser probe is divided into a first laser probe 81 and a second laser probe 82, both of which are connected to the laser amplifier via an optical fiber passing through the insulating section of the curved arm. The laser amplifier is mounted on a rotary bracket and connected to the controller via a cable. The laser amplifier sends a laser signal to the laser probe via the optical fiber, and the laser probe projects the laser onto the detection bar. When the projection position is on a highly reflective material, the laser probe transmits the higher reflected light to the laser amplifier via the optical fiber; when the projection position is on a low-reflective material, the laser probe transmits the lower reflected light to the laser amplifier via the optical fiber. The laser amplifier sends different electrical signals to the controller based on the strength of the returned optical signal, thereby detecting the angle of the main insulating arm relative to the leveling support and the angle of the curved arm structure relative to the leveling support.

[0023] A bracket rotation detection block 11 is mounted at the connection between the bracket swivel base 33 and the swivel bracket 4. Two sets of proximity switches 12 are mounted on the swivel bracket 4. The rotation detection block 11 has two different thicknesses along its circumference. When the proximity switches 12 detect a thicker area, they send an electrical signal to the controller 13. For ease of description, the thicker area of ​​the rotation detection block 11 is designated as the danger zone.

[0024] When the angle between the main insulating arm 1 and the horizontal plane is small, the crank arm structure 3 rotates counterclockwise by more than 90° relative to the leveling support 2, and the slewing bracket 4 also rotates counterclockwise by more than 90° relative to the crank arm structure 3. Under this working condition, the working bucket 5 will collide with the main insulating arm 1.

[0025] When the main insulating arm 1 has a large angle relative to the horizontal plane, the crank arm structure 3 rotates counterclockwise by more than 90° relative to the leveling support 2, and the slewing bracket 4 also rotates counterclockwise by more than 90° relative to the crank arm structure 3. At this time, the working bucket 5 will not collide with the main insulating arm 1.

[0026] Based on the above possible dangerous situations, the following control logic is derived.

[0027] When the controller 13 detects that the angle of the main insulating arm 1 is in the safe zone, the rotation of the rotary bracket 4 of the crank arm structure 3 is not restricted.

[0028] When the controller 13 detects that the crank arm structure 3 and the rotary bracket 4 are both in the dangerous area on the same side, the controller 13 restricts the movement of the main insulating arm 1 and prohibits the main insulating arm 1 from leaving the safe area.

[0029] When the controller 13 detects that the main insulating arm 1 is in the danger zone and the crank arm structure 3 is also in the danger zone on one side, the slewing bracket 4 is restricted from rotating into the danger zone on the same side as the crank arm.

[0030] When the controller 13 detects that the main insulating arm 1 is in the danger zone and the rotating bracket 4 is also in the danger zone on one side, the crank arm structure 3 is restricted from rotating into the danger zone on the same side as the bracket.

[0031] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An insulated bucket arm vehicle bucket end rotation detection device, comprising a main insulating arm (1), a leveling support (2), a crank arm structure (3), a rotation bracket (4), and a working bucket (5), wherein the leveling support (2) is located at one end of the crank arm structure (3), the lower portion of the leveling support (2) is longitudinally hinged to the main insulating arm (1), and the upper portion is laterally rotationally connected to the crank arm structure (3), the rotation bracket (4) is fixed to the working bucket (5) and laterally rotationally connected to the other end of the crank arm structure (3), and is characterized in that: The crank arm structure (3) is divided into a crank arm rotary seat (31), a crank arm insulating section (32), and a bracket rotary seat (33). The crank arm rotary seat (31) is connected to the leveling support (2) in a transverse rotation manner, and the bracket rotary seat (33) is connected to the rotary bracket (4) in a transverse rotation manner. A controller (13) is installed on the working bucket (5), and three optical fiber amplifiers (10) are provided on the rotary bracket (4). Each optical fiber amplifier (10) is connected to the controller (13) by a line. A main insulating arm angle detection strip (7) is provided at a position of the main insulating arm (1) close to the leveling support (2). A first laser probe (81) for detecting the main insulating arm angle detection strip (7) is installed on the side of the leveling support (2). A crank arm rotation detection strip (6) is provided at the connection between the leveling support (2) and the crank arm rotary seat (31). The crank arm rotation detection strip (6) is fixed on the leveling support (2). Two detection strips are installed on the crank arm rotary seat (31). a second laser probe (82) of the bending arm rotation detection strip (6), wherein an optical fiber (9) is connected between the first laser probe (81) and an optical fiber amplifier (10), and an optical fiber (9) is connected between the two second laser probes (82) and the other two optical fiber amplifiers (10) in a one-to-one correspondence; a bracket rotation detection block (11) is provided at the connection between the bracket rotation seat (33) and the rotating bracket (4), the bracket rotation detection block (11) is fixed on the bracket rotation seat (33), one side of the bracket rotation detection block (11) is thick and the other side is thin, the rotating bracket (4) is provided with two groups of proximity switches (12) arranged side by side, the proximity switches (12) are used to detect the bracket rotation detection block (11), the rotating bracket (4) moves in a circumferential direction relative to the bracket rotation seat (33), and when the proximity switch (12) detects the thick edge area of ​​the bracket rotation detection block (11), an electrical signal can be sent to the controller (13); The main insulating arm angle detection strip (7) is composed of two materials: high-reflective and low-reflective; The crank arm rotation detection strip (6) is composed of two materials: high-reflective and low-reflective.

2. The insulated bucket arm vehicle bucket end rotation detection device according to claim 1, characterized in that: Three optical fibers (9) are arranged in the curved arm insulation section (32).

3. The control system of the insulated bucket arm vehicle end rotation detection device according to claim 1 or 2, characterized in that: The invention comprises a detection bar module, a sensing module and a control module, wherein the detection bar module comprises a crank arm rotation detection bar (6), a main insulating arm angle detection bar (7) and a bracket rotation detection block (11), the sensing module comprises a first laser probe (81), a second laser probe (82) and a proximity switch (12), the control module comprises an optical fiber amplifier (10) and a controller (13), the second laser probe (82) and the optical fiber amplifier (10) are connected via an optical fiber (9), the optical fiber amplifier (10) and the controller (13) are connected via a cable, the second laser probe (82) corresponds to the crank arm rotation detection bar (6), the first laser probe (81) and the optical fiber amplifier (10) are connected via an optical fiber (9), the optical fiber amplifier (10) and the controller (13) are connected via a cable, the first laser probe (81) corresponds to the main insulating arm angle detection bar (7), the proximity switch (12) is connected to the controller (13) via a cable, and the proximity switch (12) corresponds to the bracket rotation detection block (11).

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