Multifunctional electric lifting and carrying device

Abstract

The present application relates to the technical field of power lifting and carrying equipment, in particular to a multifunctional power lifting and carrying equipment; comprising a tracked chassis and a vehicle body fixedly connected above the tracked chassis; a main motor output shaft is connected to the vehicle body through a vehicle disc; the main motor shell is embedded in the bottom of the folding telescopic arm and fixedly connected with each other; the output end of the folding telescopic arm is fixedly connected with a manned platform; a movable groove is arranged at the center position in the vehicle body; the present application is matched with the reversible adaptive supporting leg structure through the self-adaptive rotation of the universal ball, the liquid medium transmission mechanism, the arc strip push-pull adjustment structure, so as to automatically link and adjust the opening angle and supporting span of the four-direction supporting legs of the vehicle body according to the real-time center of gravity shift direction in the folding telescopic arm operation process, real-time match the dynamic operation condition of the equipment, and further completely solve the technical pain points that the fixed angle supporting legs of the traditional equipment cannot adapt to the center of gravity shift, the center of gravity is inclined to the side supporting force, and the overall supporting force is unbalanced.

Description

Technical Field

[0001] This invention relates to the field of electric lifting and handling equipment technology, specifically to a multi-functional electric lifting and handling equipment. Background Technology

[0002] In power substation operation and maintenance, line repair, and power equipment replacement scenarios, the multi-functional power lifting and handling equipment is a miniaturized special construction equipment. The main body of the equipment adopts a tracked chassis, which has excellent traversability on complex terrains. The upper part of the equipment is equipped with a telescopic boom, an aerial work platform, and auxiliary lifting and handling mechanisms. The body is equipped with four or more hydraulically deployable support legs. The overall structure is compact and highly maneuverable, enabling it to enter restricted areas such as equipment gaps, narrow corridors, and uneven ground in substations where large cranes cannot pass. It can simultaneously complete the lifting of small power components, material handling, and high-altitude maintenance operations, and is widely adaptable to the diverse and refined construction needs of power construction sites. It is an indispensable multi-functional construction equipment in current power operation and maintenance work.

[0003] Currently, the outriggers of similar electric lifting and handling equipment on the market all adopt a fixed-angle symmetrical deployment structure. The deployment angle and support span of all outriggers always remain uniform, and they cannot adaptively adjust according to the real-time center of gravity shift of the equipment. When the boom extends to one side or lifts material on one side, causing the center of gravity of the machine to shift to one side, the existing equipment cannot correspondingly reduce the deployment angle and support span of the outriggers on the side of the center of gravity shift. This results in insufficient support on the side of the center of gravity shift, and the overall support layout does not match the real-time center of gravity conditions. This can easily cause the equipment to be unbalanced and unstable, posing a serious risk of tipping over and greatly reducing the safety and site adaptability of the equipment. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention proposes a multi-functional electric lifting and handling device. This invention utilizes a combination of omnidirectional ball adaptive rotation, a liquid medium transmission mechanism, an arc-shaped push-pull adjustment structure, and a reversible adaptive outrigger structure. This allows for automatic adjustment of the deployment angle and support span of the four outriggers based on the real-time center of gravity shift direction during the operation of the folding telescopic boom. This real-time matching of the device's dynamic operating conditions completely solves the technical pain points of traditional equipment, such as the inability of fixed-angle outriggers to adapt to center of gravity shifts, insufficient support on the side with a center of gravity bias, and overall unbalanced support forces. The core effects are: eliminating the safety hazard of tipping over when operating on one side, significantly improving the safety of power equipment in confined spaces, and enhancing the adaptability of the equipment to complex operating conditions.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: A multi-functional electric lifting and handling device, comprising a tracked chassis and a vehicle body fixedly connected to the tracked chassis; a main motor output shaft is connected to the top of the vehicle body via a chassis; the main motor housing is embedded in and fixedly connected to the bottom of a folding telescopic arm; a manned platform is fixedly connected to the output end of the folding telescopic arm; a movable groove is provided at the center of the interior of the vehicle body; horn-shaped grooves communicating with the movable groove are evenly arranged in four directions on the outer side of the vehicle body; the upper and lower inner walls of the horn-shaped grooves near the movable groove are rotatably connected to a joint rod at one end of a joint seat; the other end of the joint seat extends into the horn-shaped groove. The outer side is fixedly connected to the support leg; the inner wall of the movable groove is provided with an active groove that is offset from the horn groove; the active groove is slidably and sealedly connected to the active block; the interior of the vehicle body is provided with an arc-shaped groove that communicates with the corresponding active groove; the end of the arc-shaped groove is connected to the corresponding horn groove; the arc-shaped groove is movably and sealedly connected to the arc-shaped strip; the active groove and the arc-shaped groove are filled with liquid medium; a ball groove is provided at the center of the upper surface of the vehicle body; the ball groove is ball-connected to a universal ball fixedly connected to the lower surface of the chassis; a gap is left between the lower surface of the chassis and the upper surface of the vehicle body; the ball groove is connected to the movable groove through the horn hole; a movable ball is movably arranged in the movable groove; the movable ball is fixedly connected to the universal ball through a connecting rod.

[0006] Preferably, the inner wall of the ball groove is uniformly provided with an arc-shaped outer arc groove; the outer wall of the universal ball is uniformly provided with an inner arc groove corresponding to the outer arc groove; the inner arc groove and the outer arc groove are rolled together to connect the ball; the support leg includes a main plate, a secondary plate, a main leg, a secondary hydraulic cylinder, and a support foot; the upper end of the main plate is fixedly connected to the outer end of the joint seat; the lower inner side of the main plate is rotatably connected to one end of the main leg; the other end of the main leg is hinged downwards to the support foot; the outer wall of the main leg is fixedly connected to the secondary plate; the inner side of the secondary plate and the inner side of the upper end of the main plate are hinged to the end of the secondary hydraulic cylinder.

[0007] Preferably, the support leg is provided with an arc-shaped foot pad; the upper surface of the foot pad is provided with an arc-shaped foot groove; the lower end of the support leg is movably connected to the foot groove; the lower end of the support leg and the foot groove both have isosceles trapezoidal vertical cross sections.

[0008] Preferably, the two sides of the support leg are connected to the corresponding ends of the foot groove by arc-shaped springs; the support leg is initially located in the middle of the foot groove.

[0009] Preferably, the horn groove and the movable groove are provided with an adjustment groove on their lower inner walls; the adjustment groove is slidably connected to a cross-shaped adjustment frame; the adjustment frame is movably connected to the joint rod; the upper surface of the adjustment frame is evenly provided with lower teeth around the joint rod; the lower surface of the joint seat is provided with upper teeth near the joint rod; the upper teeth can engage with the lower teeth; a lower hydraulic cylinder is embedded in the bottom of the adjustment groove; the output end of the lower hydraulic cylinder is fixedly connected to the lower surface of the adjustment frame.

[0010] Preferably, the pallet includes a pallet housing, a lower pallet cone, a pallet block, and a lifting hydraulic cylinder; the upper surface of the pallet housing is fixedly connected to the output shaft of the main motor; a pallet groove with a rectangular cross-section is provided at the center of the lower surface of the pallet housing; the pallet groove is slidably connected to the pallet block; the upper surface of the pallet block is connected to the inner wall of the pallet groove through the lifting hydraulic cylinder; an inverted conical lower pallet cone is fixedly connected to the lower surface of the pallet block; the lower pallet cone is fixedly connected to the top of the universal ball joint; and the bottom of the folding telescopic arm has a positioning protrusion ring.

[0011] Preferably, two arc-shaped strips within the same arc-shaped groove are connected by a tension spring; the ends of the two arc-shaped strips within the same arc-shaped groove are provided with pull grooves; the ends of the tension springs are fixedly connected to the bottom of the pull grooves.

[0012] Preferably, the arc-shaped groove is connected to the inner wall of the horn groove away from the movable groove.

[0013] Preferably, the end of the arc-shaped strip that contacts the joint seat is provided with a vertical rotating groove; a vertical rotating roller with a protruding opening is rotatably connected in the vertical rotating groove; a horizontal rotating groove is provided on the side of the active block that contacts the movable ball; a horizontal rotating roller with a protruding opening is rotatably connected in the horizontal rotating groove.

[0014] Preferably, the manned platform can be replaced with a hook with a pulley system to lift objects or people.

[0015] The beneficial effects of this invention are as follows:

[0016] 1. This invention utilizes a combination of omnidirectional ball adaptive rotation, a liquid medium transmission mechanism, an arc-shaped push-pull adjustment structure, and a flip-up adaptive outrigger structure to automatically adjust the deployment angle and support span of the four outriggers of the vehicle body according to the real-time center of gravity shift direction during the operation of the folding telescopic arm. This allows for real-time matching with the dynamic operating conditions of the equipment, thereby completely solving the technical pain points of traditional equipment where fixed-angle outriggers cannot adapt to center of gravity shift, the center of gravity is biased to the side and the support force is insufficient, and the overall support force is unbalanced. This achieves the core effects of eliminating the safety hazards of side rollover when the equipment is operating on one side, significantly improving the safety of operation in confined power areas, and enhancing the adaptability of the equipment to complex operating conditions.

[0017] 2. This invention utilizes a combination of a static, ground-fitting arc-shaped foot pad structure, an isosceles trapezoidal limiting and sliding structure between the outrigger and the foot groove, and an arc-shaped spring elastic centering structure. This changes the traditional operation method where the outrigger directly contacts the ground for adjustment. During the outrigger angle adjustment process, the foot pad remains stationary and in contact with the ground, with the outrigger only sliding and adjusting within the arc-shaped foot groove inside the foot pad. This completely eliminates the problems of direct scraping between the outrigger and the ground, excessive resistance, adjustment jamming, ground wear, and unstable support that occur during traditional outrigger adjustment. The core effects are a significant improvement in the smoothness of adaptive support adjustment, reduced structural wear and adjustment resistance, and ensured precise and reliable dynamic support adjustment.

[0018] 3. This invention utilizes a combination of a lower hydraulic cylinder lifting drive structure, a cross-shaped adjustment frame structure, and an upper and lower tooth meshing limit structure to achieve free unlocking and locking switching of the joint seat and outrigger rotation states. This allows the equipment to flexibly switch between adaptive balance operation mode and fixed support operation mode according to on-site construction needs, thereby expanding its applicability. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is an overall perspective view of the present invention;

[0021] Figure 2 This is a partial perspective view of the present invention;

[0022] Figure 3 This is a perspective view of the support leg in this invention;

[0023] Figure 4 This is a vertical cross-sectional view of the vehicle body of the present invention;

[0024] Figure 5 This is a cross-sectional view of the vehicle body of the present invention;

[0025] Figure 6 This is a diagram showing the positional distribution of the active block, the arc-shaped strip, and the movable ball in this invention.

[0026] Figure 7 This is a perspective view of the adjustment frame and joint seat in this invention.

[0027] In the diagram: 1. Tracked chassis; 2. Body; 21. Movable groove; 22. Horn groove; 24. Active groove; 25. Active block; 251. Lateral rotation groove; 252. Lateral rotation roller; 26. Arc groove; 27. Ball groove; 271. Outer arc groove; 28. Horn hole; 29. ​​Adjustment groove; 3. Chassis; 31. Main motor; 32. Chassis housing; 33. Lower chassis cone; 34. Chassis block; 35. Lifting hydraulic cylinder; 36. Chassis groove; 4. Folding telescopic arm; 41. Personnel platform; 42. Positioning convex ring. 42. Joint seat 5. Joint rod 51. Adjustment frame 52. Lower tooth 53. Upper tooth 54. Lower hydraulic cylinder 55. Support leg 6. Main board 61. Sub-plate 62. Main leg 63. Sub-hydraulic cylinder 64. Support foot 65. Arc strip 7. Tension spring 71. Tension groove 72. Vertical rotation groove 73. Vertical rotation roller 74. Universal ball 8. Movable ball 81. Connecting rod 82. Inner arc groove 83. Ball bearing 84. Foot pad 9. Foot groove 91. Arc spring 92. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0029] like Figures 1 to 7 As shown, the present invention includes the following embodiments:

[0030] Example 1: A multi-functional electric lifting and handling device includes a tracked chassis 1 and a vehicle body 2 fixedly connected to the tracked chassis 1; the output shaft of a main motor 31 is connected to the top of the vehicle body 2 via a chassis 3; the housing of the main motor 31 is embedded in the bottom of a folding telescopic arm 4 and fixedly connected to it; the output end of the folding telescopic arm 4 is fixedly connected to a manned platform 41; a movable groove 21 is provided at the center of the interior of the vehicle body 2; horn grooves 22 communicating with the movable groove 21 are evenly provided in four directions on the outer side of the vehicle body 2; the upper and lower inner walls of the horn groove 22 near the movable groove 21 are rotatably connected to a joint rod 51 at one end of a joint seat 5; the other end of the joint seat 5 extends to the outside of the horn groove 22 and is fixedly connected to a support leg 6; the inner wall of the movable groove 21 is provided with a horn... The active groove 24 is staggered from the groove 22; the active block 25 is slidably and sealed within the active groove 24; the interior of the vehicle body 2 is provided with an arc-shaped groove 26 that communicates with the corresponding active groove 24; the end of the arc-shaped groove 26 is connected to the corresponding horn groove 22; the arc-shaped strip 7 is movably and sealed within the arc-shaped groove 26; the active groove 24 and the arc-shaped groove 26 are filled with a liquid medium; a ball groove 27 is provided at the center of the upper surface of the vehicle body 2; the ball groove 27 is ball-connected to a universal ball 8 fixedly connected to the lower surface of the chassis 3; a gap is left between the lower surface of the chassis 3 and the folding telescopic arm 4 and the upper surface of the vehicle body 2; the ball groove 27 is connected to the movable groove 21 through the horn hole 28; a movable ball 81 is movably disposed within the movable groove 21; the movable ball 81 is fixedly connected to the universal ball 8 through a connecting rod 82.

[0031] In this embodiment, the inner wall of the ball groove 27 is uniformly provided with an arc-shaped outer arc groove 271; the outer wall of the universal ball 8 is uniformly provided with an inner arc groove 83 corresponding to the outer arc groove 271; the inner arc groove 83 and the outer arc groove 271 are rolled together to connect the ball bearing 84; the support leg 6 includes a main plate 61, a secondary plate 62, a main leg 63, a secondary hydraulic cylinder 64, and a support foot 65; the upper end of the main plate 61 is fixedly connected to the outer end of the joint seat 5; the lower inner side of the main plate 61 is rotatably connected to one end of the main leg 63; the other end of the main leg 63 is hinged downward to the support foot 65; the outer wall of the main leg 63 is fixedly connected to the secondary plate 62; the inner side of the secondary plate 62 and the inner side of the upper end of the main plate 61 are hinged to the end of the secondary hydraulic cylinder 64.

[0032] The equipment relies on a tracked chassis 1 to stably move the upper fixed body 2, outriggers 6, folding telescopic boom 4, and manned platform 41 to the power-restricted construction site. After the equipment is precisely positioned, the operator can independently control the auxiliary hydraulic cylinders 64 corresponding to each outrigger 6 to perform telescopic drive operations. Utilizing the hinged assembly relationship formed by the two ends of the auxiliary hydraulic cylinders 64 with the main plate 61 and the auxiliary plate 62 respectively, the auxiliary hydraulic cylinders 64 can precisely push the auxiliary plate 62 to deflect relative to the main plate 61 during the telescopic process, thereby causing the main leg 63, which is fixedly connected to the bottom of the main plate 61, to smoothly flip outward around the hinge fulcrum, so that the equipment is initially in a vertical alignment position during transportation. The main leg 63, which is in a retracted state, gradually transforms into a downward-sloping working posture, and finally the support foot 65, which is hinged at the bottom of the main leg 63, fits tightly into the construction ground, completing the four-point ground support of the entire equipment. This provides basic support for subsequent high-altitude maintenance, small-part hoisting, and material handling operations. During the formal power maintenance operation of the equipment, the built-in main motor 31 can stably drive the output shaft to rotate relative to the top tray 3, thereby driving the folding telescopic arm 4 and the end manned platform 41 to achieve 360° horizontal angle adjustment. At the same time, the folding telescopic arm 4 can autonomously complete multi-stage unfolding and extension actions, accurately transporting the manned platform 41 to the high-altitude work location.

[0033] When the folding telescopic arm 4 unfolds and extends to drive the manned platform 41 to work, the overall center of gravity of the folding telescopic arm 4 will deviate from the center of the vehicle body 2. Taking the folding telescopic arm 4 deviating to the left of the center of gravity as an example, the bottom of the folding telescopic arm 4, which is tilted by force, flips to the left and drives the universal ball 8 to apply a lateral force to the left. This forces the universal ball 8 to make a corresponding angle of fit and deflection to the left inside the ball groove 27 opened in the center of the top surface of the vehicle body 2. There are multiple sets of balls 84 rolling and embedded between the inner arc groove 83 evenly opened on the outer wall of the universal ball 8 and the corresponding outer arc groove 271 opened on the inner wall of the ball groove 27. The low-resistance rolling cooperation of the balls 84 can effectively reduce the frictional resistance of the universal ball 8 during the leftward deflection process, ensuring that the self-aligning action is sensitive and smooth.

[0034] Meanwhile, the limiting and cooperating structure of the inner and outer arc grooves 271 and the ball bearings 84 can strictly constrain the horizontal rotation of the universal ball 8, allowing the universal ball 8 to only achieve vertical pitch and deflection angle adjustment, completely avoiding the problem of the universal ball 8's rotation interfering with the overall horizontal rotation of the chassis 3 and the folding telescopic arm 4, ensuring that the equipment's operating angle adjustment function is not affected. When the universal ball 8 pitches to the left, it will simultaneously drive the connecting rod 82 fixed at the bottom center to perform angle traction, thereby pulling the movable ball 81 fixed at the bottom end of the connecting rod 82 to slide precisely to the right in the sealed movable groove 21 inside the center of the vehicle body 2.

[0035] During the sliding process, the movable ball 81 precisely pushes the active block 25 located on the right side, inside the active groove 24 which is offset from the active groove 21. This causes the right active block 25 to slide and compress along the inner wall of the corresponding active groove 24. Since the active groove 24 and the connected arc-shaped groove 26 are completely filled with a sealing liquid medium and are a closed and interconnected structure, the right active block 25 will continuously compress the liquid medium inside the groove during the pressure sliding process. This causes the liquid medium to generate directional pressure flow and smoothly flow into the corresponding arc-shaped groove 26 on the right side. The liquid pressure directly drives the arc-shaped strip 7 inside the right arc-shaped groove 26 to extend outward. The end of the outward-extending right arc-shaped strip 7 will directly press against the joint seat 5 inside the corresponding right horn groove 22. This causes the right joint seat 5 to smoothly deflect and rotate to the left, relying on the joint rod 51 mounted on the upper and lower inner walls of the horn groove 22 as the fulcrum of rotation. This causes the two sets of outriggers 6 fixed to the outside of the right joint seat 5 to rotate synchronously, effectively expanding the extension distance and support span of the outriggers 6 on the right side. As the right arc-shaped bar 7 continues to extend, it will directly generate a mechanical pushing force and transmit it to the arc-shaped bar 7 on the left side, forcibly pushing the arc-shaped bar 7 on the left side to retract towards the bottom of the corresponding arc-shaped groove 26. During the retraction process of the arc-shaped bar 7 on the left side, it will squeeze the liquid medium in the corresponding side groove in the opposite direction, thereby pushing the active block 25 on the left side to extend outward into the active groove 24, so that the distance between the adjacent joint seats 5 on the left side is passively reduced. Finally, the distance between the outriggers 6 on the left side is shortened and the support span is reduced, so as to match the eccentric operation condition of the equipment's center of gravity shifting to the left in real time, and realize the adaptive balance adjustment of tightening the support on the side of the center of gravity shift and widening the support on the opposite side. The tension spring 71 plays the role of pulling and resetting in the pull groove 72 at the end of the arc-shaped bar 7.

[0036] When the center of gravity of the folding telescopic arm 4 shifts to the right, the bottom of the tilted folding telescopic arm 4 will continuously exert a lateral force to the right on the fixedly connected universal ball 8, forcing the universal ball 8 to deflect to the right at a corresponding angle within the ball groove 27 opened at the center of the top surface of the vehicle body 2. Similarly, relying on the low-resistance rolling cooperation and limiting structure of the inner and outer arc grooves 271 and the ball 84, the universal ball 8 is ensured to deflect to the right smoothly without horizontal self-rotation, and does not affect the overall angle adjustment operation of the equipment. While the universal ball 8 is tilting to the right, it pulls the movable ball 81 to slide precisely to the left within the movable groove 21 through the bottom connecting rod 82. The movable ball 81 sliding to the left will push the active block 25 on the left side, causing it to slide along the left active groove 24 and squeeze the internal liquid medium. The pressurized liquid medium flows into the left arc groove 26. This pushes the left arc-shaped bar 7 outward and presses the left joint seat 5 to deflect to the left, expanding the support span of the left-side outrigger 6. The mechanical thrust of the extended left arc-shaped bar 7 directly squeezes the right-side arc-shaped bar 7 back to the bottom of the arc-shaped groove 26, simultaneously pushing the right-side active block 25 out of the active groove 24, reducing the support spacing of the right-side outrigger 6. This achieves adaptive balance adjustment where the right-side outrigger 6 span decreases and the left-side outrigger 6 support span increases when the equipment's center of gravity shifts to the right, completely improving the problem of uneven force distribution on the traditional fixed outrigger 6. If the overall center of gravity of the folding telescopic arm 4 shifts forward, the spacing of the forward-facing outrigger 6 will shorten, enhancing the support effect; similarly, if the overall center of gravity of the folding telescopic arm 4 shifts backward, the spacing of the backward-facing outrigger 6 will shorten, enhancing the support effect.

[0037] During the process of the movable block pressing one of the active blocks 25 on one side, the active blocks 25 in other directions, freed from the constraint of the movable ball 81, will have their corresponding tension springs 71 pulling the corresponding arc-shaped strips 7 to slide back along the arc-shaped grooves 26. This allows the liquid medium in the arc-shaped grooves 26 to return to the active grooves 24. Consequently, other active blocks 25 not pressed by the movable ball 81 will extend out of their corresponding active grooves 24 and press against the surface of the movable block. This makes the active blocks 25 more sensitive to adjustment during the next pressing. After the arc-shaped bar 7 is pulled back by the tension spring 71 and retracted into the arc-shaped groove 26, the joint seat 5 at the corresponding position can complete the spacing reduction more quickly. After all the power maintenance, lifting and handling operations at the construction site are completed, the folding telescopic arm 4 will fold and shorten. Then, the auxiliary hydraulic cylinder 64 will shorten and drive the main leg 63 to flip and reset upwards, so that the main leg 63 will fold from the oblique support state to the vertical state. The support foot 65 at the end of the support leg 6 will reset as the support leg 6 resets. After the whole is completely reset, it can be transferred to the next construction point at any time by the tracked chassis 1.

[0038] This invention utilizes the adaptive rotation of the omnidirectional ball 8, the liquid medium transmission mechanism, the push-pull adjustment structure of the arc-shaped strip 7, and the structure of the flip-up adaptive outrigger 6 to automatically adjust the unfolding angle and support span of the four-way outrigger 6 of the vehicle body 2 according to the real-time center of gravity shift direction during the operation of the folding telescopic arm 4. This allows for real-time matching with the dynamic operating conditions of the equipment, thereby completely solving the technical pain points of traditional equipment with fixed-angle outrigger 6 that cannot adapt to center of gravity shift, insufficient support force on the side with center of gravity bias, and overall unbalanced support force. The core effects are to eliminate the safety hazards of side tipping and overturning when the equipment is operating on one side, significantly improve the safety of operation in confined power areas, and enhance the adaptability of the equipment to complex operating conditions.

[0039] Example 2: The support leg 65 is provided with an arc-shaped foot pad 9; the upper surface of the foot pad 9 is provided with an arc-shaped foot groove 91; the lower end of the support leg 65 is movably connected in the foot groove 91; the lower end of the support leg 65 and the foot groove 91 are both isosceles trapezoids in vertical cross section.

[0040] In this embodiment, the two sides of the support leg 65 are connected to the corresponding ends of the foot groove 91 by arc springs 92; the support leg 65 is initially located in the middle of the foot groove 91.

[0041] During the deployment and horizontal angle adjustment of the outrigger 6 driven by the auxiliary hydraulic cylinder 64, the outrigger 6 is supported by the newly added foot pad 9 directly contacting the ground. The bottom end of the outrigger 65 is movably fitted into the arc-shaped foot groove 91 on the upper surface of the foot pad 9. Both the bottom end of the outrigger 65 and the vertical section of the foot groove 91 are set as isosceles trapezoidal structures. The limiting structure of the isosceles trapezoid forms a plug-in fit, effectively preventing the outrigger 65 from coming out of the foot groove 91 during relative sliding adjustment, ensuring the stability of the assembly structure. At the same time, the two sides of the outrigger 65 are connected to the corresponding ends of the foot groove 91 through arc springs 92. In the initial landing support state, the two arc springs 92 are in a balanced state, which can continuously limit the outrigger 65 to the middle position of the foot groove 91, ensuring that the outrigger 65 has a regular posture and uniform force when the equipment is supported and positioned each time. This also provides a basis for the subsequent positioning of the outrigger 65 under the foot. The reserved space within the groove 91 allows for movement. When the equipment adjusts the horizontal angle of the outriggers 6 by rotating the joint seat 5 according to the shift in the machine's center of gravity, or changes the support spacing of the outriggers 6, the foot pads 9 remain fixed and stationary, in contact with the ground, without any sliding or scraping. Only the outriggers 65 follow the angle adjustment of the outriggers 6. The relatively stationary foot pads 9 smoothly slide circumferentially along the inside of the arc-shaped foot groove 91. During the sliding process, the arc-shaped springs 92 on both sides undergo stretching or compression deformation in response to the offset sliding of the outriggers 65. This completely avoids the problems of traditional one-piece outriggers 65 directly contacting the ground, scraping against the ground hard when rotating with the outriggers 6, and getting stuck. After the operation is completed, the offset and deformed arc-shaped springs 92 release elastic potential energy and automatically pull the outriggers 65 back to the initial position centered in the foot groove 91, completing the automatic centering and reset of the outriggers 65's posture, and preparing for the next support adjustment operation.

[0042] This invention utilizes a combination of a static, ground-fitting arc-shaped foot pad 9, an isosceles trapezoidal limiting and sliding structure between the outrigger 65 and the foot groove 91, and an elastic centering structure with an arc-shaped spring 92. This changes the traditional method of adjusting the outrigger 65 by having it directly contact the ground. During the angle adjustment of the outrigger 6, the foot pad 9 remains stationary and in contact with the ground, while the outrigger 65 slides and adjusts within the arc-shaped foot groove 91 inside the foot pad 9. This completely eliminates the problems of direct scraping between the outrigger 65 and the ground, excessive resistance, adjustment jamming, ground wear, and unstable support that occur when adjusting the outrigger 6 in traditional structures. The core effects are a significant improvement in the smoothness of adaptive support adjustment, reduced structural wear and adjustment resistance, and ensured precise and reliable dynamic support adjustment.

[0043] Example 3: An adjustment groove 29 is provided on the lower inner wall of the horn groove 22 and the movable groove 21; the adjustment groove 29 is slidably connected to a cross-shaped adjustment frame 52; the adjustment frame 52 is movably connected to the joint rod 51; lower teeth 53 are evenly arranged around the joint rod 51 on the upper surface of the adjustment frame 52; upper teeth 54 are provided on the lower surface of the joint seat 5 near the joint rod 51; the upper teeth 54 can engage with the lower teeth 53; a lower hydraulic cylinder 55 is embedded in the bottom of the adjustment groove 29; the output end of the lower hydraulic cylinder 55 is fixedly connected to the lower surface of the adjustment frame 52.

[0044] During power maintenance operations, the equipment can autonomously switch between adaptive adjustment mode and fixed locking mode for the outriggers 6 according to the actual working conditions at the construction site. When the equipment needs to follow the center of gravity shift to achieve adaptive distance adjustment of the outriggers 6, the lower hydraulic cylinder 55 inside the control adjustment groove 29 shortens and retracts, driving the cross-shaped adjustment frame 52 to slide down along the inner wall of the adjustment groove 29. This causes the lower teeth 53 on the upper surface of the adjustment frame 52 to move down synchronously, thereby completely disengaging the lower teeth 53 from the upper teeth 54 at the bottom of the joint seat 5 near the joint bar 51, releasing the engagement state. At this time, the joint seat 5 is no longer constrained by the lower teeth 53, and the joint bar 51 can rotate freely. When the center of gravity shifts during the folding telescopic arm 4 of the equipment, triggering the hydraulic transmission and the arc-shaped bar 7 pressing against the joint seat 5, the equipment can resume operation. The joint seat 5 can smoothly rotate by relying on the joint rod 51, smoothly driving the outrigger 6 to complete the adaptive adjustment of the support spacing, realizing the dynamic center of gravity balance of the equipment. When the construction site does not require adaptive adjustment and the equipment needs to maintain a fixed support state, the lower hydraulic cylinder 55 is extended and pushed to push the adjustment frame 52 to slide upward and reset along the adjustment groove 29, so that the lower tooth 53 at the top of the adjustment frame 52 re-engages precisely with the upper tooth 54 at the bottom of the joint seat 5. The rigid engagement and limiting effect of the lower tooth 53 and the upper tooth 54 locks the rotational freedom of the joint seat 5, so that the angle between the joint seat 5 and the outrigger 6 is completely fixed and cannot deflect with the shift of the equipment's center of gravity. This ensures that the four-way outrigger 6 of the equipment always maintains a fixed support span, realizing the rigid locking of the support posture.

[0045] This invention utilizes a lower hydraulic cylinder 55 lifting drive structure, a cross-shaped adjustment frame 52 structure, and an upper tooth 54 and lower tooth 53 meshing and limiting structure to achieve free unlocking and locking switching between the joint seat 5 and the outrigger 6 rotation states. This allows the equipment to flexibly switch between adaptive balance operation mode and fixed support operation mode according to on-site construction needs, thereby expanding its applicability.

[0046] Example 4: The pallet 3 includes a pallet shell 32, a lower pallet cone 33, a pallet block 34, and a lifting hydraulic cylinder 35; the upper surface of the pallet shell 32 is fixedly connected to the output shaft of the main motor 31; a pallet groove 36 with a rectangular cross-section is provided at the center of the lower surface of the pallet shell 32; the pallet groove 36 is slidably connected to the pallet block 34; the upper surface of the pallet block 34 is connected to the inner wall of the pallet groove 36 through the lifting hydraulic cylinder 35; the lower surface of the pallet block 34 is fixedly connected to the inverted conical lower pallet cone 33; the lower pallet cone 33 is fixedly connected to the top of the universal ball 8; the bottom of the folding telescopic arm 4 has a positioning protrusion ring 42.

[0047] In normal operation, the positioning protrusion 42 at the bottom of the folding telescopic arm 4 maintains a corresponding distance from the upper surface of the vehicle body 2. When the folding telescopic arm 4 extends to one side and tilts due to a shift in the center of gravity caused by heavy-duty operation, the positioning protrusion 42 can fit against the upper surface of the vehicle body 2, providing limiting support for the lateral displacement of the folding telescopic arm 4. In actual operation, the sensitivity of the overall adaptive adjustment can be adjusted by the lifting hydraulic cylinder 35 inside the chassis 3. When the lifting hydraulic cylinder 35 extends and performs work, it pushes the disc block 34 to slide along the rectangular groove 36 inside the disc shell 32. The disc block 34 simultaneously drives the bottom-fixed inverted cone-shaped lower disc cone 33 and the universal ball 8 to move away from the top-fixed main motor 31, causing the main motor 31 to rise. This, in turn, drives the folding telescopic arm 4 at the bottom of the main motor 31 and the positioning protrusion 42 to move upward synchronously, effectively increasing the distance between the positioning protrusion 42 and the upper surface of the vehicle body 2. The increased spacing between the surfaces allows for greater tilting range when the center of gravity of the folding telescopic arm 4 shifts, enabling the universal ball 8 to produce a larger pitch deflection. This, in turn, amplifies the compression stroke and force on the active block 25 via the connecting rod 82 and the movable ball 81, increasing the hydraulic transmission adjustment range and ultimately enhancing the adaptive adjustment sensitivity of the outrigger 6 support spacing. When the lifting hydraulic cylinder 35 shortens and retracts, it causes the folding telescopic arm 4 and the positioning convex ring 42 to move downwards synchronously, reducing the distance between the positioning convex ring 42 and the upper surface of the vehicle body 2. This limits the tilting deviation of the folding telescopic arm 4, reduces the deflection of the universal ball 8 and the compression stroke of the active block 25, weakens the hydraulic transmission adjustment range, and thus reduces the sensitivity of the outrigger 6 span adaptive adjustment. This enables the flexible adjustment of the equipment support adaptive sensitivity based on on-site construction conditions, workload, and site stability.

[0048] This invention utilizes the sliding cooperation structure of the groove 36 and the block 34, the lifting drive structure of the lifting hydraulic cylinder 35, the universal ball connection structure of the lower plate cone 33, and the limiting structure of the bottom positioning protrusion ring 42 of the folding telescopic arm 4 to precisely control the distance between the positioning protrusion ring 42 and the vehicle body 2 by extending and retracting the lifting hydraulic cylinder 35. This changes the tilt offset margin of the folding telescopic arm 4 and the deflection amplitude of the universal ball 8, thereby achieving adjustable sensitivity of the adaptive support adjustment of the equipment outrigger 6 to meet the adjustment requirements of different construction conditions.

[0049] Example 5: Two arc-shaped strips 7 within the same arc-shaped groove 26 are connected by a tension spring 71; the ends of the two arc-shaped strips 7 within the same arc-shaped groove 26 are provided with pull grooves 72; the end of the tension spring 71 is fixedly connected to the bottom of the pull groove 72.

[0050] Example 6: The arc-shaped groove 26 is connected to the inner wall of the horn groove 22 away from the movable groove 21.

[0051] In this embodiment, the arc-shaped groove 26 is connected and set on the inner wall of the horn groove 22 away from the movable groove 21, so that the force point of the arc-shaped bar 7 pushing the joint seat 5 is far away from the rotation fulcrum of the joint rod 51. This effectively increases the lever arm length of the joint seat 5 rotation. During the operation of the liquid medium pushing the arc-shaped bar 7 to extend and press the joint seat 5, relying on the mechanical principle of increased lever arm, only a small hydraulic pushing force is needed to smoothly drive the joint seat 5 to deflect and rotate around the joint rod 51. This effectively reduces the rotation trigger threshold of the joint seat 5, making the deflection response of the joint seat 5 more sensitive and the rotation process smoother and more stable. It avoids the problems of difficult pushing, delayed triggering, and rotation jamming caused by the traditional force point being close to the fulcrum and the lever arm being too small, ensuring efficient triggering of the adaptive adjustment action of the leg 6 spacing.

[0052] Example 7: A vertical rotating groove 73 is provided at the end of the arc-shaped strip 7 that contacts the joint seat 5; a vertical rotating roller 74 with a protruding opening is rotatably connected in the vertical rotating groove 73; a horizontal rotating groove 251 is provided on the side of the active block 25 that contacts the movable ball 81; a horizontal rotating roller 252 with a protruding opening is rotatably connected in the horizontal rotating groove 251.

[0053] During the process of the arc-shaped bar 7 pushing the joint seat 5 to rotate, the vertical rotating roller 74 installed in the vertical rotating groove 73 at the end of the arc-shaped bar 7 can roll and rotate in contact with the joint seat 5, effectively offsetting the sliding friction between the arc-shaped bar 7 and the joint seat 5; at the same time, during the process of the movable ball 81 pushing the active block 25 due to the shift of the center of gravity of the equipment, the horizontal rotating roller 252 in the horizontal rotating groove 251 on the surface of the active block 25 can roll and contact with the surface of the movable ball 81, converting the original sliding friction into rolling friction, reducing the motion resistance of each linkage structure throughout the process, and ensuring smooth and sensitive adjustment.

[0054] Example 8: The manned platform 41 can be replaced with a hook with a pulley system to lift objects or people and meet the needs of multi-functional lifting and handling.

[0055] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first," "second," "third," etc. are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of the present invention, "fixed connection" refers to a fixed connection. In the description of the present invention, "sliding connection" refers to a connection where the two parts can only slide and cannot be separated. Specifically, the groove can be set to be concave and the block can be set to be convex, and the specific design can be adjusted according to the actual situation. "Sliding fit" refers to a connection where the two parts can slide and separate. In the description of the present invention, "rotational connection" refers to a connection where the two parts can only rotate and cannot produce axial displacement. Specifically, an annular groove can be set on the inner wall of the hole, and a ring that is rotatably connected to the groove can be fixed to the outer wall of the shaft.

[0056] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-functional electric lifting and handling device, comprising a tracked chassis and a vehicle body fixedly connected to the tracked chassis; a main motor output shaft is connected to the vehicle body via a chassis; the main motor housing is embedded in and fixedly connected to the bottom of a folding telescopic boom; a personnel platform is fixedly connected to the output end of the folding telescopic boom; characterized in that: A movable groove is provided at the center of the interior of the vehicle body; horn grooves communicating with the movable groove are evenly arranged in four directions on the outer side of the vehicle body; the upper and lower inner walls of the horn grooves near one end of the movable groove are rotatably connected to a joint rod at one end of a joint seat; the other end of the joint seat extends to the outside of the horn groove and is fixedly connected to a support leg; an active groove offset from the horn groove is provided on the inner wall of the movable groove; an active block is slidably and sealingly connected in the active groove; an arc-shaped groove communicating with the corresponding active groove is provided inside the vehicle body; the end of the arc-shaped groove is connected to the corresponding horn groove; an arc-shaped strip is movably and sealingly connected in the arc-shaped groove; the active groove and the arc-shaped groove are filled with a liquid medium; a ball groove is provided at the center of the upper surface of the vehicle body; the ball groove is ball-connected to a universal ball fixedly connected to the lower surface of the chassis; a gap is left between the lower surface of the chassis and the upper surface of the vehicle body; the ball groove is connected to the movable groove through a horn hole; a movable ball is movably arranged in the movable groove; the movable ball is fixedly connected to the universal ball through a connecting rod.

2. The electric multi-functional lifting and handling equipment according to claim 1, characterized in that: The inner wall of the ball groove is uniformly provided with an outer arc groove; the outer wall of the universal ball is uniformly provided with an inner arc groove corresponding to the outer arc groove; the inner arc groove and the outer arc groove are connected to the ball in a rolling manner; the support leg includes a main plate, a secondary plate, a main leg, a secondary hydraulic cylinder and a support foot; the upper end of the main plate is fixedly connected to the outer end of the joint seat; the lower inner side of the main plate is rotatably connected to one end of the main leg; the other end of the main leg is hinged to the support foot downwards; the outer wall of the main leg is fixedly connected to the secondary plate; the inner side of the secondary plate and the inner side of the upper end of the main plate are hinged to the end of the secondary hydraulic cylinder.

3. The electric multi-functional lifting and handling equipment according to claim 2, characterized in that: The support leg is provided with an arc-shaped foot pad; the upper surface of the foot pad is provided with an arc-shaped foot groove; the lower end of the support leg is movably connected to the foot groove; the vertical cross-section of the lower end of the support leg and the foot groove is an isosceles trapezoid.

4. The electric multi-functional lifting and handling equipment according to claim 3, characterized in that: The two sides of the support leg are connected to the corresponding ends of the foot groove by arc springs; the support leg is initially located in the middle of the foot groove.

5. The electric multi-functional lifting and handling equipment according to claim 1, characterized in that: The horn groove and the movable groove are provided with an adjustment groove on their lower inner walls; the adjustment groove is slidably connected to a cross-shaped adjustment frame; the adjustment frame is movably connected to the joint rod; the upper surface of the adjustment frame is evenly provided with lower teeth around the joint rod; the lower surface of the joint seat is provided with upper teeth near the joint rod; the upper teeth can engage with the lower teeth; a lower hydraulic cylinder is embedded in the bottom of the adjustment groove; the output end of the lower hydraulic cylinder is fixedly connected to the lower surface of the adjustment frame.

6. The multi-functional electric lifting and handling equipment according to claim 1, characterized in that: The pallet includes a pallet housing, a lower pallet cone, a pallet block, and a lifting hydraulic cylinder; the upper surface of the pallet housing is fixedly connected to the output shaft of the main motor; a pallet groove with a rectangular cross-section is provided at the center of the lower surface of the pallet housing; the pallet groove is slidably connected to the pallet block; the upper surface of the pallet block is connected to the inner wall of the pallet groove through the lifting hydraulic cylinder; the lower surface of the pallet block is fixedly connected to the inverted conical lower pallet cone; the lower pallet cone is fixedly connected to the top of the universal ball; the bottom of the folding telescopic arm has a positioning protrusion ring.

7. The electric multi-functional lifting and handling equipment according to claim 1, characterized in that: Two arc-shaped strips within the same arc-shaped groove are connected by a tension spring; the ends of the two arc-shaped strips within the same arc-shaped groove are provided with pull grooves; the ends of the tension springs are fixedly connected to the bottom of the pull grooves.

8. The electric multi-functional lifting and handling equipment according to claim 1, characterized in that: The arc-shaped groove is connected to the inner wall of the horn groove away from the movable groove.

9. The electric multi-functional lifting and handling equipment according to claim 1, characterized in that: A vertical rotating groove is provided at the end of the arc-shaped strip that contacts the joint seat; a vertical rotating roller with a protruding opening is rotatably connected in the vertical rotating groove; a horizontal rotating groove is provided on the side of the active block that contacts the movable ball; a horizontal rotating roller with a protruding opening is rotatably connected in the horizontal rotating groove.

10. A multi-functional electric lifting and handling device according to claim 1, characterized in that: The manned platform can be replaced with a hook equipped with pulleys to lift objects or people.

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