A quick-changing device for a working platform and its operation method

Abstract

The present invention discloses a device for quickly changing a work platform, comprising an arm assembly, a hydraulic system, a two-person insulated bucket assembly, a work robot assembly, an electronic control system, a swing arm assembly, and a bracket assembly; the arm assembly is mounted on a vehicle turntable, the swing arm assembly is mounted on the front end of the arm assembly via a leveling oil cylinder, the bracket assembly is mounted on the front end of the swing arm assembly, the two-person insulated bucket assembly and the work robot assembly are fixed to the left and right sides of the vehicle, respectively, for placing the work platform; a quick-change lifting frame is mounted on the bracket assembly, and the quick-change lifting frame can slide up and down relative to each other along the bracket assembly; mounting frames are mounted on the sides of the work robot and the two-person insulated bucket, and cooperate with the quick-change lifting frame to achieve mutual connection, thereby playing a quick-change connection role. By operating the control handle of the replacement work platform, the work platform can be automatically positioned and clamped, saving time and effort, and no corresponding lifting equipment is required, thus reducing economic investment and greatly improving the flexibility of vehicle use.

Description

Technical Field

[0001] The present invention relates to the technical field of engineering vehicle working platforms, and in particular to a working platform quick-changing device and an operating method thereof. Background Art

[0002] Work platforms are essential components of many construction vehicles, including the work bucket of aerial work vehicles, the insulated bucket of insulated boom booms, and work robots. The work bucket is categorized as either a single-person bucket or a two-person bucket. Different work platforms are required to cope with different working conditions. For example, insulated boom booms frequently require replacement of the single-person bucket with a two-person bucket, or the work bucket with the work robot.

[0003] Currently, before the vehicle departs, the work platform is lifted using other lifting equipment, the mounting screws are removed, and the other work platform is then installed on the bracket. This existing technology is time-consuming and labor-intensive, and requires prior knowledge of the operating conditions and a pre-determined decision about which work platform to use. This also limits vehicle flexibility, making it difficult to adjust to varying operating conditions. Furthermore, appropriate lifting equipment is required, increasing investment. Summary of the Invention

[0004] In response to the above-mentioned technical deficiencies, the purpose of the present invention is to provide a device for quickly changing a working platform and a method for operating the same, which sets up two working platform placement positions on the vehicle platform. By means of hydraulic drive, electrical detection and other means, the working platform can be automatically positioned and clamped by operating the control handle, saving time and effort. Since no additional lifting equipment is required, the vehicle can replace the working platform anytime and anywhere according to different working conditions, greatly improving the flexibility of vehicle use.

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

[0006] The present invention provides a quick-change device for an operating platform, comprising an arm assembly, a hydraulic system, a two-person insulated bucket assembly, an operating robot assembly, an electric control system, a swing arm assembly, and a bracket assembly;

[0007] The arm assembly is mounted on the vehicle turntable and has a telescopic function; the swing arm assembly is mounted at the front end of the arm assembly via a leveling cylinder and can rotate horizontally; the bracket assembly is mounted at the front end of the swing arm assembly and can rotate horizontally; the two-person insulated bucket assembly and the working robot assembly are respectively fixed to the left and right sides of the vehicle, for accommodating the corresponding working robots and two-person insulated bucket working platforms; the hydraulic system provides power for the system; and the electronic control system is used for control and position detection.

[0008] The bracket assembly is equipped with a quick-change lifting frame, which can slide relatively up and down along the bracket assembly; the sides of the operating robot and the two-person insulation bucket are both equipped with mounting frames, which cooperate with the quick-change lifting frame to achieve mutual connection and play a quick-change connection role.

[0009] Preferably, one side of the quick-change lifting frame is mounted on the connecting frame of the bracket assembly, and the other side is detachably connected to the mounting frame on the side of the working robot or the two-person insulated bucket; the upper positioning shaft and the lower positioning sleeve are installed on the mounting frame, and the quick-change lifting frame is installed with a positioning fork, a connecting rod locking mechanism and a detection switch; the detection switch is used to detect whether the upper positioning shaft and the positioning fork, and the connecting rod locking mechanism and the lower positioning sleeve are in place, and give corresponding indications in the electronic control system.

[0010] Preferably, positioning forks are provided on both sides of the upper part of the quick-change lifting frame, and a connecting rod locking mechanism is provided at the bottom. The connecting rod locking mechanism includes a latch cylinder, a guide sleeve, a base, an upper connecting rod, a lower connecting rod, a middle connecting rod and a locking pin. The latch cylinder is installed on the side of the quick-change lifting frame, and the base is installed at the bottom of the quick-change lifting frame. An upper connecting rod, a lower connecting rod and a middle connecting rod are installed between the latch cylinder and the base. Each connecting rod is hinged to form a variable quadrilateral structure. A locking pin is hingedly installed at the end of the middle connecting rod, and the locking pin is arranged in the guide sleeve. Under the push of the latch cylinder, each connecting rod realizes the cooperation between the locking pin and the lower positioning sleeve to realize the automatic locking function.

[0011] Preferably, a lifting cylinder is installed between the connecting frame on the bracket assembly and the quick-change lifting frame, the upper end of the lifting cylinder is connected to the pin shaft of the quick-change lifting frame, and the lower end is connected to the pin shaft of the connecting frame, and the lifting frame rollers are installed at both ends of the connecting frame and arranged in the slide rails on both sides of the quick-change lifting frame. The quick-change lifting frame and the connecting frame can slide up and down relative to each other through the extension and contraction of the lifting cylinder.

[0012] Preferably, the two-person insulated bucket assembly includes a two-person insulated bucket, a second mounting frame, a sliding frame, a support frame and a telescopic cylinder; the support frame is installed on one side of the vehicle, a sliding guide rail is provided on the top of the support frame, the sliding frame is arranged on the sliding guide rail of the support frame, and the two-person insulated bucket is installed on the sliding frame; the telescopic cylinder connects the sliding frame and the support frame, and the two-person insulated bucket can slide left and right along the sliding guide rail through the extension and retraction of the telescopic cylinder.

[0013] Preferably, the two-person insulation bucket assembly further includes a binding belt assembly and a vibration-damping pad, wherein the vibration-damping pad is installed on the sliding frame and is used to support the two-person insulation bucket; the binding belt assembly is used to stabilize the two-person insulation bucket.

[0014] Preferably, the working robot assembly includes a working robot, a mounting frame, a support seat, a shock-absorbing mechanism and an automatic clamping mechanism; the support seat is installed on one side of the vehicle; the support seat is symmetrically provided with a shock-absorbing mechanism for shock absorption during driving; automatic clamping mechanisms are also symmetrically installed on both sides of the support seat, and the working robot is placed on the shock-absorbing mechanism and is locked from both sides of the bottom of the working robot by the automatic clamping mechanism to achieve fixation of the working robot in a non-working state.

[0015] Preferably, the shock absorbing mechanism includes a shock absorbing rubber cylinder, a connecting plate and a spring shock absorber which are fixed on the support seat in sequence from bottom to top.

[0016] Preferably, the automatic clamping mechanism includes a locking slide, a second telescopic cylinder and a locking clamp. The second telescopic cylinder is installed on the upper surface of the support seat and is connected to the bottom of the locking slide. The locking clamp is fixed to the lower part of the working robot. The locking slide can slide along the upper surface of the support seat under the push of the second telescopic cylinder and cooperate with the locking clamp to realize automatic locking of the working robot.

[0017] Another object of the present invention is to provide an operating method of a quick-change device for a work platform, comprising the following steps:

[0018] S1. Disassembling the working robot: Retract the second telescopic cylinder to lock the locking block of the locking slide into the locking plate, thus locking the working robot. Retract the latch cylinder to disengage the locking pin from the lower positioning sleeve. Retract the lifting cylinder to disengage the positioning fork from the upper positioning shaft. Rotate the swing arm assembly to the rear of the vehicle, thus completing the disassembly of the working robot.

[0019] S2. Install the two-person insulated bucket: Extend the telescopic cylinder 1 to the specified position and loosen the binding belt assembly appropriately; rotate the swing arm assembly to the specified angle. At the same time, adjust the slewing mechanism on the connecting frame to rotate it to the specified angle and move the quick-change lifting frame to the bottom of the second mounting frame; extend the lifting cylinder so that the positioning fork cooperates with the upper positioning shaft to slightly lift the second mounting frame; extend the latch cylinder so that the locking pin shaft is locked with the lower positioning sleeve; loosen the binding belt assembly and rotate the swing arm assembly to the rear of the vehicle to complete the installation of the two-person insulated bucket;

[0020] S3. Dismantle the two-person insulated bucket: Extend the telescopic cylinder to the specified position; rotate the swing arm assembly to the specified angle, and adjust the slewing mechanism on the connecting frame to the specified angle to move the two-person insulated bucket above the sliding frame; retract the lifting cylinder to allow the two-person insulated bucket to fall onto the vibration damping pad; retract the latch cylinder to disengage the locking pin shaft from the lower locating sleeve; further retract the lifting cylinder to disengage the locating fork from the upper locating shaft; rotate the swing arm assembly to the rear of the vehicle to complete the dismantling of the two-person insulated bucket;

[0021] S4. Install the working robot: rotate the swing arm assembly to the specified angle, and at the same time adjust the slewing mechanism on the connecting frame to rotate to the specified angle, and move the quick-change lifting frame to the bottom of the mounting frame 1; extend the lifting cylinder to make the positioning fork cooperate with the upper positioning shaft to slightly lift the mounting frame 1; extend the latch cylinder to clamp the locking pin shaft and the lower positioning sleeve; extend the telescopic cylinder to disengage the locking slide from the locking clamping plate, and complete the installation of the working robot.

[0022] The beneficial effects of the present invention are:

[0023] 1. Replacing the working platform saves time and effort. Two working platform placement positions are set up on the vehicle platform. Through hydraulic drive, electrical detection and other means, and the use of connecting rod locking mechanism, automatic clamping mechanism and platform sliding mechanism, the operating control handle can realize automatic positioning and clamping of the working platform, saving time and effort.

[0024] 2. No need to equip corresponding lifting equipment, reducing economic investment; since no additional lifting equipment is required, the vehicle can replace the working platform anytime and anywhere according to different working conditions, greatly improving the flexibility of vehicle use;

[0025] 3. The overall layout can have a variety of workstation arrangements, suitable for different locking forms such as cylinder direct insertion locking, cylinder push locking, or other direct-acting locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 This is a schematic diagram of the overall layout of a quick-change device for a work platform provided in Example 1 of the present invention;

[0028] Figure 2 A schematic structural diagram of a two-person insulating bucket assembly provided in Example 1 of the present invention;

[0029] Figure 3 This is a schematic diagram of the installation of the working robot assembly provided in Example 1 of the present invention;

[0030] Figure 4 A schematic diagram of the connection between the quick-change lifting frame and the first or second mounting frame provided in Example 1 of the present invention;

[0031] Figure 5 A schematic diagram of the structure of a quick-change lifting frame provided in Example 1 of the present invention;

[0032] Figure 6 Schematic diagram of the structure of the connecting rod locking mechanism provided in Example 1 of the present invention, wherein (a) is the locked state and (b) is the released state;

[0033] Figure 7 Schematic diagram of the placement structure of the working robot assembly 4 provided in Example 1 of the present invention, wherein (c) is the disassembled state and (d) is the placed state;

[0034] Figure 8 A schematic structural diagram of the working robot provided in Example 1 of the present invention;

[0035] Figure 9 A schematic structural diagram of a lifting cylinder provided in Example 1 of the present invention;

[0036] Description of reference numerals:

[0037] 1. Arm assembly; 2. Hydraulic system; 3. Two-person insulated bucket assembly; 4. Working robot assembly; 5. Electronic control system; 6. Swing arm assembly; 7. Bracket assembly; 8. Two-person insulated bucket; 9. Sliding frame; 10. Support frame; 11. Telescopic cylinder 1; 12. Binding belt assembly; 13. Vibration damping pad; 14. Mounting frame 2; 15. Working robot; 16. Connecting frame; 17. Quick-change lifting frame; 18. Lifting cylinder; 19. Mounting frame 1; 20. Lifting frame roller; 21. Upper positioning shaft; 22. Positioning fork; 23. Lower positioning sleeve; 24. Connecting rod locking mechanism; 25. Detection switch; 26. Latch cylinder; 27. Guide sleeve; 28. Base; 29. Upper connecting rod; 30. Lower connecting rod; 31. Middle connecting rod; 32. Locking pin shaft; 33. Shock-absorbing rubber cylinder; 34. Connecting plate; 35. Spring shock absorber; 36. Support seat; 37. Locking slide; 38. Telescopic cylinder 2; 39. Locking clamp. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be described clearly and completely below. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0039] Example 1

[0040] like Figures 1 to 9As shown, a device for quickly changing work platforms includes an arm assembly 1, a hydraulic system 2, a two-person insulated bucket assembly 3 (for workstation #2), a work robot assembly 4 (for workstation #1), an electronic control system 5, a swing arm assembly 6, and a bracket assembly 7. The arm assembly 1 is connected to the vehicle turntable and has a telescopic function. The swing arm assembly 6 is connected to the front end of the arm assembly 1 via a leveling cylinder and can rotate horizontally. The bracket assembly 7 is connected to the front end of the swing arm assembly 6 and can rotate horizontally. The two-person insulated bucket assembly 3 (for workstation #2) and the work robot assembly 4 (for workstation #1) are respectively fixed to the left and right sides of the vehicle, used to place the work platform when needed. The hydraulic system 2 provides power for the system. The electronic control system 5 is used for control and position detection.

[0041] The two-person insulated bucket assembly 3 includes the two-person insulated bucket 8, a sliding frame 9, a support frame 10, a telescopic cylinder 11, a lashing strap assembly 12, a vibration damping pad 13, and a second mounting frame 14. The support frame 10 is fixed to the left side of the vehicle via a threaded connection. A sliding guide rail is provided on the top of the support frame 10, and the sliding frame 9 is mounted on the sliding guide rail of the support frame 10. The telescopic cylinder 11 is connected to the sliding frame 9 at one end and mounted on the support frame 10 at the other end. The sliding frame 9 can slide left and right along the sliding guide rail by the telescopic cylinder 11 extending and retracting. The two-person insulated bucket 8 is mounted on the sliding frame 9, which is fixed with a vibration damping pad 13 to support the two-person insulated bucket 8. The lashing strap assembly 12 is used to stabilize the insulated bucket. The mounting frame 2 14 is fixed to the side of the two-person insulated bucket 8 via a threaded connection. It cooperates with the quick-change lifting frame 17 to achieve mutual connection, providing a quick-change connection.

[0042] The working robot assembly 4 includes the working robot 15, mounting frame 19, shock-absorbing rubber cylinder 33, connecting plate 34, spring shock absorber 35, support base 36, locking slide 37, telescopic cylinder 2 38, and locking clamp 39. Support base 36 is fixed to the right side of the vehicle. A shock-absorbing mechanism is symmetrically mounted on support base 36. This mechanism comprises, from bottom to top, the shock-absorbing rubber cylinder 33, connecting plate 34, and spring shock absorber 35, which are fixed to support base 36 in order to reduce vibration during driving. An automatic clamping mechanism is symmetrically mounted on either side of the support base 36. The mechanism comprises a locking slide 37, a second telescopic cylinder 38, and a locking clip 39. The second telescopic cylinder 38 is mounted on the upper surface of the support base 36 and connected to the bottom of the locking slide 37. The locking clip 39 is fixed to the lower portion of the working robot 15. Driven by the second telescopic cylinder 38, the locking slide 37 slides along the upper surface of the support base 36 and cooperates with the locking clip 39 to automatically lock the working robot 15. The working robot 15 is placed on the shock-absorbing mechanism and is locked from both sides of its bottom by the automatic clamping mechanism, securing it in place when not in operation.

[0043] The mounting frame 19 is fixed to the side of the working robot 15 by a threaded connection, and cooperates with the quick-change lifting frame 17 to achieve mutual connection, playing a quick-change connection role.

[0044] The connecting frame 16 on the bracket assembly 7 is connected to the swing arm assembly 6 and can rotate horizontally; the lifting cylinder 18 is installed between the connecting frame 16 and the quick-change lifting frame 17. The structure of the lifting cylinder 18 is as follows: Figure 9 As shown, the upper end of the lifting cylinder 18 is pin-connected to the quick-change lifting frame 17, and the lower end is pin-connected to the connecting frame 16. The lifting frame rollers 20 are installed at both ends of the connecting frame 16 and arranged in the slide rails on both sides of the quick-change lifting frame 17. The quick-change lifting frame 17 and the connecting frame 16 can slide relative to each other up and down through the extension and contraction of the lifting cylinder 18 and the sliding of the lifting frame rollers 20.

[0045] One side of the quick-change lift frame 17 is mounted on the connecting frame 16, and the other side is removably connected to the mounting frame on the side of the work robot 15 or the two-person insulated bucket 8. An upper positioning shaft 21 and a lower positioning sleeve 23 are fixed to the first mounting frame 19 and the second mounting frame 14. A positioning fork 22, a connecting rod locking mechanism 24, and a detection switch 25 are also fixed to the quick-change lift frame 17. The detection switch 25 is used to detect whether the upper positioning shaft 21 and the positioning fork 22 are in place, and whether the connecting rod locking mechanism 24 and the lower positioning sleeve 23 are in place, and provides a corresponding indication to the electronic control system 5.

[0046] Specifically, positioning forks 22 are provided on both sides of the upper portion of the quick-change lifting frame 17 , and a connecting rod locking mechanism 24 is provided at the bottom. The top and bottom of the connecting rod locking mechanism 24 are fixedly mounted on the quick-change lifting frame 17 . The connecting rod locking mechanism 24 includes a latch cylinder 26, a guide sleeve 27, a base 28, an upper connecting rod 29, a lower connecting rod 30, a middle connecting rod 31 and a locking pin 32. The latch cylinder 26 is installed on the side of the quick-change lifting frame 17, and the base 28 is installed at the bottom of the quick-change lifting frame 17. The upper connecting rod 29, the lower connecting rod 30 and the middle connecting rod 31 are symmetrically installed between the latch cylinder 26 and the base 28. The upper connecting rod 29 and the latch cylinder 26, the upper connecting rod 29 and the middle connecting rod 31, the middle part of the middle connecting rod 31 and the lower connecting rod 30, and the lower connecting rod 30 and the base 28 are all hingedly installed. The end of the middle connecting rod 31 is also hingedly installed with a locking pin 32, which is arranged in the guide sleeve 27. Figure 6 As shown, (a) and (b) simultaneously show the two states of locking and loosening of the mechanism. Under the push of the latch cylinder 26, each connecting rod can realize the mutual matching of the locking pin shaft 32 and the lower positioning sleeve 23, realizing the automatic locking function.

[0047] The steps for each action are as follows:

[0048] 1. Steps for disassembling the robot 15: (Before operation, the lifting cylinder 18 is extended 100 mm, the latch cylinder 26 is fully extended, and the telescopic cylinder 38 is fully extended)

[0049] 1) The second telescopic cylinder 38 retracts, causing the locking block of the locking slide 37 to engage the locking plate 39, thus completing the locking of the working robot 15;

[0050] 2) The latch cylinder 26 retracts, disengaging the locking pin 32 from the lower positioning sleeve 23;

[0051] 3) The lifting cylinder 18 retracts, causing the positioning fork 22 to disengage from the upper positioning shaft 21;

[0052] 4) The swing arm assembly 6 rotates to the rear of the vehicle, completing the disassembly of the working robot 15.

[0053] 2. Install the double insulated bucket 8 steps: (before operation, the telescopic cylinder 11 is fully retracted, the lifting cylinder 18 is fully retracted, and the latch cylinder 26 is fully retracted)

[0054] 1) Extend the telescopic cylinder 11 to the specified position and loosen the binding belt assembly 12 appropriately;

[0055] 2) Rotate the swing arm assembly 6 to the left to the specified angle. Simultaneously adjust the slewing mechanism on the connecting frame 16 to rotate it to the specified angle as well. Move the quick-change lifting frame 17 to approximately 100 mm below the second mounting frame 14.

[0056] 3) The lifting cylinder 18 extends, so that the positioning fork 22 cooperates with the upper positioning shaft 21 to slightly lift the mounting frame 2 14;

[0057] 4) The latch cylinder 26 extends to clamp the locking pin 32 and the lower positioning sleeve 23;

[0058] 5) Loosen the binding belt assembly 12, rotate the swing arm assembly 6 to the rear of the vehicle, and complete the installation of the two-person insulated bucket 8.

[0059] 3. Disassembly steps for the double insulated bucket 8: (Before operation, the telescopic cylinder 11 is fully retracted, the lifting cylinder 18 is extended 150mm, and the latch cylinder 26 is fully extended)

[0060] 1) The telescopic cylinder 11 extends to the specified position;

[0061] 2) The swing arm assembly 6 rotates to the left to the specified angle, and at the same time adjusts the slewing mechanism on the connecting frame 16 to rotate to the specified angle as well, and moves the two-person insulation bucket 8 to a position approximately 150 mm above the sliding frame 9;

[0062] 3) The lifting cylinder 18 retracts about 50 mm, so that the two-person insulating bucket 8 falls on the vibration damping pad 13;

[0063] 4) The latch cylinder 26 retracts, disengaging the locking pin 32 from the lower positioning sleeve 23;

[0064] 5) The lifting cylinder 18 retracts, causing the positioning fork 22 to disengage from the upper positioning shaft 21;

[0065] 6) The swing arm assembly 6 is rotated to the rear of the vehicle to complete the disassembly of the two-person insulated bucket 8.

[0066] 4. Steps for installing the working robot 15: (Before operation, the lifting cylinder 18 is fully retracted, the latch cylinder 26 is fully retracted, and the telescopic cylinder 38 is fully retracted)

[0067] 1) Rotate the swing arm assembly 6 to the right to the specified angle. At the same time, adjust the slewing mechanism on the connecting frame 16 to rotate it to the specified angle as well. Move the quick-change lifting frame 17 to about 100 mm below the mounting frame 19.

[0068] 2) The lifting cylinder 18 extends, so that the positioning fork 22 cooperates with the upper positioning shaft 21 to slightly lift the mounting frame 19;

[0069] 3) The latch cylinder 26 extends to clamp the locking pin 32 and the lower positioning sleeve 23;

[0070] 4) The second telescopic cylinder 38 is extended to disengage the locking slide 37 from the locking clamp 39, completing the installation of the working robot 15.

[0071] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A quick-change device for a working platform, characterized in that: It includes an arm assembly (1), a hydraulic system (2), a two-person insulated bucket assembly (3), an operating robot assembly (4), an electronic control system (5), a swing arm assembly (6) and a bracket assembly (7); The arm assembly (1) is mounted on the vehicle turntable, and the arm has a telescopic function; the swing arm assembly (6) is mounted on the front end of the arm assembly (1) through a leveling cylinder and can rotate horizontally; the bracket assembly (7) is mounted on the front end of the swing arm assembly (6) and can rotate horizontally; the two-person insulated bucket assembly (3) and the operating robot assembly (4) are respectively fixed on the left and right sides of the vehicle, and are used to place the corresponding operating robot (15) and the two-person insulated bucket (8) operating platform; the hydraulic system (2) provides power for the system; the electronic control system (5) is used for control and position detection; A quick-change lifting frame (17) is mounted on the bracket assembly (7), and the quick-change lifting frame (17) can slide relatively up and down along the bracket assembly (7); mounting frames are mounted on the sides of the operating robot (15) and the two-person insulation bucket (8), and cooperate with the quick-change lifting frame (17) to achieve mutual connection, thereby playing a quick-change connection role; One side of the quick-change lifting frame (17) is mounted on the connecting frame (16) of the bracket assembly (7), and the other side is detachably connected to the mounting frame on the side of the working robot (15) or the two-person insulated bucket (8); an upper positioning shaft (21) and a lower positioning sleeve (23) are mounted on the mounting frame, and a positioning support fork (22) and a connecting rod locking mechanism (24) are mounted on the quick-change lifting frame (17).

2. A quick-change device for a work platform according to claim 1, characterized in that: A detection switch (25) is also installed on the quick-change lifting frame (17). The detection switch (25) is used to detect whether the upper positioning shaft (21) and the positioning fork (22) and the connecting rod locking mechanism (24) and the lower positioning sleeve (23) are in place, and give corresponding instructions in the electronic control system (5).

3. A quick-change device for a work platform as claimed in claim 2, characterized in that: The quick-change lifting frame (17) is provided with positioning forks (22) on both sides of the upper portion, and a connecting rod locking mechanism (24) is provided at the bottom. The connecting rod locking mechanism (24) includes a latch cylinder (26), a guide sleeve (27), a base (28), an upper connecting rod (29), a lower connecting rod (30), a middle connecting rod (31) and a locking pin shaft (32). The latch cylinder (26) is installed on the side of the quick-change lifting frame (17), and the base (28) is installed on the quick-change lifting frame (17). At the bottom, an upper connecting rod (29), a lower connecting rod (30) and a middle connecting rod (17) are installed between the latch cylinder (26) and the base (28), and each connecting rod is hinged to form a variable quadrilateral structure. A locking pin (32) is hingedly installed at the end of the middle connecting rod (31), and the locking pin (32) is arranged in the guide sleeve (27); each connecting rod realizes the mutual cooperation of the locking pin (32) and the lower positioning sleeve (23) under the push of the latch cylinder (26), thereby realizing the automatic locking function.

4. A quick-change device for a work platform as claimed in claim 3, characterized in that: A lifting cylinder (18) is installed between the connecting frame (16) and the quick-change lifting frame (17) on the bracket assembly (7). The upper end of the lifting cylinder (18) is connected to the pin shaft of the quick-change lifting frame (17), and the lower end is connected to the pin shaft of the connecting frame (16). The lifting frame rollers (20) are installed at both ends of the connecting frame (16) and arranged in the slide rails on both sides of the quick-change lifting frame (17). The quick-change lifting frame (17) and the connecting frame (16) can slide relative to each other up and down through the extension and contraction of the lifting cylinder (18).

5. A quick-change device for a work platform as claimed in claim 4, characterized in that: The two-person insulated bucket assembly (3) comprises a two-person insulated bucket (8), a second mounting frame (14), a sliding frame (9), a support frame (10) and a telescopic oil cylinder (11); the support frame (10) is mounted on one side of a vehicle, a sliding guide rail is provided on the top of the support frame (10), the sliding frame (9) is arranged on the sliding guide rail of the support frame (10), and the two-person insulated bucket (8) is mounted on the sliding frame (9); the telescopic oil cylinder (11) connects the sliding frame (9) and the support frame (10), and the two-person insulated bucket (8) slides left and right along the sliding guide rail by telescoping the telescopic oil cylinder (11).

6. A quick-change device for a work platform as claimed in claim 5, characterized in that: The two-person insulating bucket assembly (3) further includes a binding belt assembly (12) and a vibration-damping pad (13). The vibration-damping pad (13) is mounted on a sliding frame (9) and is used to support the two-person insulating bucket (8). The binding belt assembly (12) is used to stabilize the two-person insulating bucket (8).

7. The quick-change device for a working platform according to claim 5, characterized in that: The working robot assembly (4) includes a working robot (15), a mounting frame (19), a support seat (36), a shock absorbing mechanism and an automatic clamping mechanism; the support seat (36) is installed on one side of the vehicle; the support seat (36) is symmetrically provided with a shock absorbing mechanism for shock absorption during driving; automatic clamping mechanisms are also symmetrically installed on both sides of the support seat (36), and the working robot (15) is placed on the shock absorbing mechanism and is locked from both sides of the bottom of the working robot (15) by the automatic clamping mechanism to achieve fixation of the working robot (15) in a non-working state.

8. A quick-change device for a work platform according to claim 7, characterized in that: The automatic clamping mechanism includes a locking slide (37), a second telescopic oil cylinder (38) and a locking card (39), wherein the second telescopic oil cylinder (38) is installed on the upper surface of the support seat (36) and is connected to the bottom of the locking slide (37), and the locking card (39) is fixed to the lower part of the working robot (15); the locking slide (37) can slide along the upper surface of the support seat (36) under the push of the second telescopic oil cylinder (38), and cooperates with the locking card (39) to realize the automatic locking of the working robot (15).

9. A quick-change device for a work platform according to claim 8, characterized in that: The shock-absorbing mechanism comprises a shock-absorbing rubber cylinder (33), a connecting plate (34) and a spring shock absorber (35) which are fixed on the support seat (36) in sequence from bottom to top.

10. The method for operating the quick-change device for a work platform according to claim 9, characterized in that: The following steps are involved: S1. Disassembling the working robot: Retract the second telescopic cylinder to lock the locking block of the locking slide into the locking plate, thus locking the working robot. Retract the latch cylinder to disengage the locking pin from the lower positioning sleeve. Retract the lifting cylinder to disengage the positioning fork from the upper positioning shaft. Rotate the swing arm assembly to the rear of the vehicle, thus completing the disassembly of the working robot. S2. Install the two-person insulated bucket: Extend the telescopic cylinder 1 to the specified position and loosen the binding belt assembly appropriately; rotate the swing arm assembly to the specified angle. At the same time, adjust the slewing mechanism on the connecting frame to rotate it to the specified angle and move the quick-change lifting frame to the bottom of the second mounting frame; extend the lifting cylinder so that the positioning fork cooperates with the upper positioning shaft to slightly lift the second mounting frame; extend the latch cylinder so that the locking pin shaft is locked with the lower positioning sleeve; loosen the binding belt assembly and rotate the swing arm assembly to the rear of the vehicle to complete the installation of the two-person insulated bucket; S3. Dismantle the two-person insulated bucket: Extend the telescopic cylinder to the specified position; rotate the swing arm assembly to the specified angle, and adjust the slewing mechanism on the connecting frame to the specified angle to move the two-person insulated bucket above the sliding frame; retract the lifting cylinder to allow the two-person insulated bucket to fall onto the vibration damping pad; retract the latch cylinder to disengage the locking pin shaft from the lower locating sleeve; further retract the lifting cylinder to disengage the locating fork from the upper locating shaft; rotate the swing arm assembly to the rear of the vehicle to complete the dismantling of the two-person insulated bucket; S4. Install the working robot: rotate the swing arm assembly to the specified angle, and at the same time adjust the slewing mechanism on the connecting frame to rotate to the specified angle, and move the quick-change lifting frame to the bottom of the mounting frame 1; extend the lifting cylinder to make the positioning fork cooperate with the upper positioning shaft to slightly lift the mounting frame 1; extend the latch cylinder to clamp the locking pin shaft and the lower positioning sleeve; extend the telescopic cylinder to disengage the locking slide from the locking clamping plate, and complete the installation of the working robot.

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