Tool quick-change multifunctional arm frame

Abstract

A multi-functional quick-change boom includes a boom connected to a lifting device and a quick-change device connected to a work platform. The boom is connected to the quick-change device via a connecting device. The quick-change device includes a quick-change frame, a swing cylinder, and a quick-change fixed frame. The fixed end of the swing cylinder is mounted on the quick-change frame, and the movable end is connected to the quick-change fixed frame. The swing cylinder drives the quick-change fixed frame to swing horizontally. The quick-change fixed frame is mounted on a mounting column of the work platform. The quick-change frame includes two parallel support plates, and a horizontally arranged force transmission shaft is fixed between the two support plates and at its top. This invention allows for quick connection and disassembly of the connecting device and the quick-change device by installing and removing a safety pin, enabling rapid connection and disassembly of the boom and the work platform. This achieves the goals of multi-purpose boom operation, cost savings, and improved construction efficiency.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery, and in particular to a quick-change multi-functional boom attachment. Background Technology

[0002] The construction of overhead power distribution lines involves various needs, such as high-altitude operations for crossarm installation, transformer hoisting, and pole erection. Therefore, high-altitude work platforms or hoisting equipment are required. However, in the current technology, these two types of equipment exist independently, which means that multiple pieces of equipment need to be deployed to meet different application scenarios during the construction of overhead power distribution lines. This results in reduced construction efficiency and a significant increase in construction costs. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies by providing a multi-functional boom with quick-change attachments that offers high safety, enables multiple uses with a single arm, saves construction costs, and improves construction efficiency.

[0004] To achieve the above objectives, this invention first proposes a quick-change multi-functional boom, comprising a boom connected to a lifting device and a quick-change device connected to a work platform. The boom is connected to the quick-change device via a connecting device. The quick-change device includes a quick-change frame, a swing cylinder, and a quick-change fixed frame. The fixed end of the swing cylinder is mounted on the quick-change frame, and the movable end is connected to the quick-change fixed frame. The swing cylinder drives the quick-change fixed frame to swing horizontally. The quick-change fixed frame is mounted on a mounting column of the work platform. The quick-change frame includes two parallel support plates, and a horizontally arranged force transmission shaft is fixed between the two support plates and at its top.

[0005] The connecting device includes a connecting frame, a guide shaft, a stop pin, and a safety pin. One end of the connecting frame has two parallel first connecting plates for connecting to the flying arm, and the other end has two parallel second connecting plates for connecting to the quick-change frame. The top of the second connecting plate has a hook matching the size of the force transmission shaft. A horizontally arranged guide shaft is fixed to the outer side of the second connecting plate. The support plate has a guide groove matching the guide shaft at the corresponding position. The second connecting plate and the support plate also have matching through holes forming safety pin holes. In the connected state, the hook on the top of the second connecting plate is engaged with the force transmission shaft, and the second connecting plate rotates around the force transmission shaft, causing the two second connecting plates to be inserted between the two support plates. After the guide shaft on the second connecting plate slides into position within the guide groove of the support plate, the safety pin holes on the second connecting plate and the support plate communicate. The safety pin is inserted into the safety pin holes of the second connecting plate and the support plate, thus fixing the relative positions of the second connecting plate and the support plate.

[0006] Using the above structure, the connection device and quick-change device can be quickly connected and disassembled by installing and removing the safety pin, enabling rapid connection and disassembly of the boom and work platform. When the lifting equipment needs to work, simply pulling out the safety pin allows for quick unloading of the connection device and quick-change device, thus unloading the work platform without affecting the lifting equipment's lifting function. When the work platform is needed, simply connect the connection device and quick-change device using the boom, insert the safety pin, and complete the quick connection. This achieves multi-purpose use of a single boom, saves construction costs, and improves construction efficiency. Furthermore, the swing cylinder within the quick-change device allows for horizontal swinging of the work platform, increasing the platform's range of motion, improving environmental adaptability, and enabling more obstacle avoidance angles.

[0007] In the above embodiment, a weighing device is also installed between the quick-change device and the working platform. The weighing device includes a top rod, a force sensor, and a quick-change connecting rod. Two quick-change connecting rods are hinged to both sides of the quick-change fixing frame. The two sides of the quick-change fixing frame are hinged to both sides of the mounting column of the working platform through two quick-change connecting rods. There is a gap between the quick-change fixing frame and the mounting column of the working platform. The quick-change fixing frame, the two quick-change connecting rods, and the mounting column of the working platform form a parallelogram mechanism. A force sensor is fixed to one side of the quick-change fixing frame. A horizontally arranged top plate is fixed on the mounting column of the working platform, directly above the force sensor. A vertically arranged top rod is provided on the detection end of the force sensor. In the working state, the top of the top rod abuts against the bottom of the top plate.

[0008] Using the above structure, in the initial state, the work platform is placed on the ground. The quick-change fixing frame moves downward relative to the mounting column around the quick-change connecting rod under its own weight. The top rod does not contact the top plate and does not weigh. In the working state, the boom is connected to the quick-release device through the connecting device. The boom lifts the work platform. At the beginning of the boom lift, the quick-change fixing frame moves upward relative to the mounting column of the work platform. At this time, the top rod contacts the top plate and begins to weigh. The parallelogram mechanism ensures that the load on the top rod applied by the top plate through the work platform and its load is always a vertical force, which is the true load of the work platform, realizing accurate weighing of the platform. The force sensor is connected to the controller, which controls the boom or lifting equipment to move. The weighing device calculates the total weight of the work platform to ensure that the total load is within the limit range. When overload occurs, lifting stops to prevent accidents caused by overload.

[0009] In the above embodiment, the top of the push rod has a semi-circular head on the side that contacts the top plate, and the bottom of the push rod is provided with an external thread. The push rod is threadedly connected to the threaded hole on the force sensor detection end. The height of the push rod can be adjusted through the threaded engagement.

[0010] In the above embodiment, an L-shaped plate is fixed on the outer side of the second connecting plate, and the guide shaft is fixed between the L-shaped plate and the second connecting plate.

[0011] In the above embodiment, the L-shaped plate and the second connecting plate are respectively provided with shaft holes that match the size of the guide shaft. The two ends of the guide shaft pass through the shaft holes and are limited by the stop pins.

[0012] In the above embodiments, the boom includes a connecting bracket, a leveling cylinder, a luffing boom, a boom luffing cylinder, a linkage mechanism, and a connecting device.

[0013] The connecting bracket is used to connect with the hoisting equipment. A luffing boom is hinged to the upper end of the connecting bracket, and a boom luffing cylinder is hinged to the lower end. The other end of the boom luffing cylinder is hinged to the other end of the luffing boom. The luffing boom achieves luffing movement through the extension and retraction of the boom luffing cylinder.

[0014] The linkage mechanism includes an inner link and an outer link. One end of the inner link and the outer link are hinged to the seventh axis. The other end of the inner link is hinged to the luffing arm. The other end of the outer link is hinged to the middle of the first connecting plate of the connecting frame on the connecting device. The end of the first connecting plate is hinged to the luffing arm. One end of the leveling cylinder is hinged to the luffing arm, and the other end is rotatably connected to the seventh axis of the linkage mechanism. The extension and retraction of the leveling cylinder drives the inner link of the linkage mechanism to move. The inner link drives the connecting device to rotate around its hinge axis with the luffing arm through the outer link, realizing the up and down swing of the connecting device.

[0015] The boom can control the up-and-down swing of the connecting device. When the work platform is placed on the ground, the up-and-down swing of the connecting device can achieve quick docking with the quick-change device. On the other hand, the extension and retraction of the boom luffing cylinder on the boom can also realize the luffing motion of the boom, further improving the control accuracy of the work platform.

[0016] In summary, the connection and quick-change devices work together, and the safety pins can be installed and removed to quickly connect and disconnect them. This allows for rapid connection and disconnection of the boom and the work platform. When the lifting equipment needs to operate, simply pulling out the safety pin allows for quick unloading of the connection and quick-change devices, thus unloading the work platform without affecting the lifting equipment's lifting function. When the work platform is needed, simply connect the boom to the quick-change device, insert the safety pin, and the connection is complete. This achieves multi-purpose functionality, saves construction costs, and improves construction efficiency. Furthermore, the swing cylinder within the quick-change device allows for horizontal swinging of the work platform, increasing its range of motion, improving environmental adaptability, and enabling more obstacle avoidance angles. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the flying arm of the present invention.

[0018] Figure 2 This is a schematic diagram of the linkage mechanism of the present invention.

[0019] Figure 3 This is a schematic diagram of the connecting device of the present invention.

[0020] Figure 4 This is a schematic diagram of the quick-change device of the present invention.

[0021] Figure 5 The diagram shows the state of the connecting device and quick-change device of the present invention when they are ready to be connected.

[0022] Figure 6 This is an exploded view of the connection frame and quick-change frame of the present invention.

[0023] Figure 7 This is a schematic diagram of the working platform of the present invention.

[0024] In the attached diagram: 1. Flying boom; 11. Connecting bracket; 12. First shaft; 13. Second shaft; 14. Leveling cylinder; 15. Luffing boom; 16. Flying boom luffing cylinder; 17. Third shaft; 18. Linkage mechanism; 181. Inner connecting rod; 182. Seventh shaft; 183. Outer connecting rod; 184. Eighth shaft; 185. Ninth shaft; 19. Connecting device; 191. Connecting frame; 192. Guide shaft; 193. Stop pin; 194. Safety pin; 195. First connecting plate; 196. Second connecting plate; 197. L-shaped plate; 2. Quick-change device; 21. Quick-change frame; 211. Force transmission shaft; 212. Support plate; 213. Guide groove; 22. Swing cylinder; 23. Quick-change fixing frame; 24. Fourth shaft; 25. Quick-change connecting rod; 26. Push rod; 27. Force sensor; 28. Moving end; 29. ​​Top plate; 3. Working platform; 4. Forks. Detailed Implementation

[0025] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0027] Example 1:

[0028] like Figures 1 to 7 As shown: A quick-change multi-functional boom includes a boom 1 and a quick-change device 2. A connecting device 19 is fixed on the boom 1, and the boom 1 is connected to the quick-change device 2 through the connecting device 19.

[0029] The quick-change device 2 includes a quick-change frame 21, a swing cylinder 22, a quick-change fixed frame 23, a fourth shaft 24, a quick-change connecting rod 25, and a movable end 28. The fixed end of the swing cylinder 22 is mounted on the quick-change frame 21, and the movable end 28 is fixedly connected to the quick-change fixed frame 23. The swing cylinder 22 drives the quick-change fixed frame 23 to swing horizontally. A vertically arranged mounting column is provided on the connection area of ​​the working platform 3, and the quick-change fixed frame 23 is mounted on the mounting column of the working platform 3. The quick-change frame 21 includes two parallel support plates 212, and a horizontally arranged force transmission shaft 211 for connecting with the flying arm 1 is fixed between the two support plates 212 and at its top.

[0030] The connecting device 19 includes a connecting frame 191, a guide shaft 192, a stop pin 193, and a safety pin 194. One end of the connecting frame 191 has two parallel first connecting plates 195 for connecting to the flying arm, and the other end has two parallel second connecting plates 196 for connecting to the quick-change frame 21. The top of the second connecting plate 196 has a hook matching the size of the force transmission shaft. A horizontally arranged guide shaft 192 is also fixed to the outer side of the second connecting plate 196. The support plate 212 has a guide groove 213 at the corresponding position of the guide shaft 192. The second connecting plate 196 and the support plate 212 also have matching safety pin holes. In the connected state... The hook on the top of the second connecting plate 196 of the connecting device 19 is first engaged with the force transmission shaft 211. Then, the second connecting plate 196 rotates around the force transmission shaft 211, causing the two second connecting plates 196 to be inserted between the two support plates 212 of the quick-change frame 21. At this time, the guide shaft 192 on the second connecting plate 196 enters the guide groove 213 of the support plate. By moving the guide shaft 192 along the guide groove 213, the positions of the second connecting plate 196 and the support plate 212 are adjusted, so that the safety pin holes on the second connecting plate 196 and the support plate are connected. Then, the safety pin 194 is inserted from the safety pin holes on the second connecting plate 196 and the support plate to fix the relative positions of the second connecting plate 196 and the support plate. In this way, the quick connection and disassembly of the connecting device 19 and the quick-change device 2 can be completed by installing and removing the safety pin 194, realizing the quick connection and disassembly of the flying arm and the work platform.

[0031] In this embodiment, an L-shaped plate 197 is fixed on the outer side of the second connecting plate 196, and the guide shaft 192 is fixed between the L-shaped plate 197 and the second connecting plate 196. Specifically, the L-shaped plate 197 and the second connecting plate 196 are respectively provided with shaft holes that match the size of the guide shaft 192. The two ends of the guide shaft 192 pass through the shaft holes and are limited by the stop pins 193 to prevent the guide shaft 192 from disengaging from the shaft holes.

[0032] The boom 1 includes a connecting bracket 11, a leveling cylinder 14, a luffing boom 15, a boom luffing cylinder 16, a linkage mechanism 18, and a connecting device 19.

[0033] One end of the luffing arm 15 is hinged to the upper end of the connecting bracket 11 via the first shaft 12, and the lower end of the connecting bracket 11 is hinged to one end of the boom luffing cylinder 16. The other end of the boom luffing cylinder 16 is hinged to the lower end of the other end of the luffing arm 15 via the third shaft 17. The luffing arm 15 achieves luffing motion by extending and retracting the boom luffing cylinder 16.

[0034] Linkage mechanism 18 includes an inner link 181 and an outer link 183. One end of the inner link 181 and the outer link 183 are hinged to a seventh shaft 182. The other end of the inner link 181 is hinged to the luffing arm 15 via a ninth shaft 185. The other end of the outer link 183 is hinged to the middle of the first connecting plate 195 of the connecting frame 191 of the connecting device 19 via an eighth shaft 184. The end of the first connecting plate 195 is hinged to the luffing arm 15. One end of the leveling cylinder 14 is hinged to the seventh shaft 182. The second shaft 13 is hinged to the luffing arm 15, and the other end is rotatably connected to the seventh shaft 182 of the linkage mechanism 18. The extension and retraction of the leveling cylinder 14 can drive the inner connecting rod 181 of the linkage mechanism 18 to move. The inner connecting rod 181 drives the outer connecting rod 183, and the outer connecting rod 183 drives the connecting device 19 to rotate around its hinge axis with the luffing arm 15, thereby realizing the up and down swing of the connecting device 19. The up and down swing of the connecting device 19 then realizes the automatic docking with the quick-change device 2.

[0035] Example 2:

[0036] The difference between this embodiment and Embodiment 1 is that a weighing device is also installed between the quick-change device 2 and the working platform 3. This weighing device can calculate the total weight of the working platform 3 and all loads on it. Thus, when the boom is lifted, the total weight of the working platform 3 is calculated by the weighing device to ensure that the total load is within a limited range, preventing accidents caused by overload. The weighing device includes a top rod 26, a force sensor 27, and quick-change connecting rods 25. Two quick-change connecting rods 25 are hinged to both sides of the quick-change fixing frame 23 via a fourth shaft 24. The two sides of the quick-change fixing frame 23 are hinged to both sides of the mounting column of the working platform 3 via two quick-change connecting rods 25. A certain distance is provided between the quick-change fixing frame 23 and the mounting column of the working platform 3. The quick-change fixing frame 23, the two quick-change connecting rods 25, and the mounting column of the working platform 3 form a parallelogram mechanism, allowing the quick-change fixing frame 23 to be positioned relative to the mounting column of the working platform 3. The mounting column moves horizontally up and down a distance. A force sensor 27 is fixed to one side of the quick-change fixing frame 23. A horizontally arranged top plate 29 is fixed on the mounting column of the working platform 3, directly above the force sensor 27. A vertically arranged top rod 26 is provided on the detection end of the force sensor 27. In the initial state, the quick-change fixing frame 23 moves downward relative to the mounting column around the quick-change connecting rod 25 under its own weight. The top rod 26 does not contact the top plate 29. In the working state, the quick-change device 2 is raised, and the quick-change fixing frame 23 moves upward relative to the mounting column. At this time, the top rod 26 contacts the top plate 29, and weighing begins. The force sensor 27 is connected to the controller, which controls the action of the aerial work equipment. Using a parallelogram mechanism, the load on the working platform 3 and its load is always applied to the top rod 26 through the top plate 29 as a vertical force, which is the true load of the working platform 3, thus achieving accurate weighing of the platform.

[0037] Furthermore, the top of the push rod 26 has a semi-circular head on the side that contacts the top plate 29, and the bottom of the push rod 26 is provided with an external thread. The push rod 26 is threaded into the threaded hole on the detection end of the force sensor 27. The height of the push rod 26 can be adjusted through the threaded engagement.

[0038] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A quick-change multi-functional boom with attachments, characterized in that: The system includes a boom connected to hoisting equipment and a quick-change device connected to a work platform. The boom is connected to the quick-change device via a connecting device. The quick-change device includes a quick-change frame, a swing cylinder, and a quick-change fixed frame. The fixed end of the swing cylinder is mounted on the quick-change frame, and the movable end is connected to the quick-change fixed frame. The swing cylinder drives the quick-change fixed frame to swing horizontally. The quick-change fixed frame is mounted on a mounting column of the work platform. The quick-change frame includes two parallel support plates, and a horizontally arranged force transmission shaft is fixed between the two support plates and at their top. The connecting device includes a connecting frame, a guide shaft, a stop pin, and a safety pin. One end of the connecting frame has two parallel first connecting plates for connecting with the flying arm, and the other end of the connecting frame has two parallel second connecting plates for connecting with the quick-change frame. The top of the second connecting plate has a hook that matches the size of the force transmission shaft. A horizontally arranged guide shaft is also fixed on the outer side of the second connecting plate. The support plate has a guide groove that matches the guide shaft at the corresponding position. The second connecting plate and the support plate also have through holes that match the position to form safety pin holes. In the connected state, the hook on the top of the second connecting plate is engaged with the force transmission shaft. The second connecting plate rotates around the force transmission shaft as the rotation axis, so that the two second connecting plates are inserted between the two support plates. After the guide shaft on the second connecting plate slides into place in the guide groove of the support plate, the safety pin holes on the second connecting plate and the support plate are connected. The safety pin is inserted into the safety pin holes of the second connecting plate and the support plate, so that the relative positions of the second connecting plate and the support plate are fixed. A weighing device is also installed between the quick-change device and the working platform. The weighing device includes a top rod, a force sensor, and a quick-change connecting rod. Two quick-change connecting rods are hinged to each side of the quick-change fixing frame. The two sides of the quick-change fixing frame are hinged to the two sides of the mounting column of the working platform through two quick-change connecting rods. There is a gap between the quick-change fixing frame and the mounting column of the working platform. The quick-change fixing frame, the two quick-change connecting rods, and the mounting column of the working platform form a parallelogram mechanism. A force sensor is fixed to one side of the quick-change fixing frame. A horizontally arranged top plate is fixed on the mounting column of the working platform, directly above the force sensor. A vertically arranged top rod is provided on the detection end of the force sensor. In the working state, the top of the top rod abuts against the bottom of the top plate.

2. The quick-change multi-functional boom according to claim 1, characterized in that: The top of the push rod has a semi-circular head on the side that contacts the top plate, and the bottom of the push rod is provided with an external thread. The push rod is threaded into the threaded hole on the force sensor detection end. The height of the push rod can be adjusted through the threaded engagement.

3. The quick-change multi-functional boom according to claim 1, characterized in that: An L-shaped plate is fixed to the outer side of the second connecting plate, and the guide shaft is fixed between the L-shaped plate and the second connecting plate.

4. The quick-change multi-functional boom according to claim 3, characterized in that: The L-shaped plate and the second connecting plate are respectively provided with shaft holes that match the size of the guide shaft. The two ends of the guide shaft pass through the shaft holes and are limited by the stop pins.

5. The quick-change multi-functional boom according to any one of claims 1 to 4, characterized in that: The boom includes a connecting bracket, a leveling cylinder, a luffing boom, a boom luffing cylinder, a linkage mechanism, and a connecting device. The connecting bracket is used to connect with the hoisting equipment. A luffing boom is hinged to the upper end of the connecting bracket, and a boom luffing cylinder is hinged to the lower end. The other end of the boom luffing cylinder is hinged to the other end of the luffing boom. The luffing boom achieves luffing movement through the extension and retraction of the boom luffing cylinder. The linkage mechanism includes an inner link and an outer link. One end of the inner link and the outer link are hinged to the seventh axis. The other end of the inner link is hinged to the luffing arm. The other end of the outer link is hinged to the middle of the first connecting plate of the connecting frame on the connecting device. The end of the first connecting plate is hinged to the luffing arm. One end of the leveling cylinder is hinged to the luffing arm, and the other end is rotatably connected to the seventh axis of the linkage mechanism. The extension and retraction of the leveling cylinder drives the inner link of the linkage mechanism to move. The inner link drives the connecting device to rotate around its hinge axis with the luffing arm through the outer link, realizing the up and down swing of the connecting device.

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