A secondary wire assembly platform for a middle-mounted handcart

Abstract

The present application relates to the technical field of assembly platform, in particular to a kind of middle handcart primary and secondary line assembly platform, including lift car, top frame assembly, rotating assembly, translation component and locking assembly;When using, operator moves handcart from handcart room to rotating assembly, then drives top frame assembly and rotating assembly to move down by lift car, makes handcart move down to the height of being convenient for assembly, by the cooperation of rotating assembly and translation component, handcart can be overturned, by overturning handcart to different angles, to facilitate operator to assemble primary and secondary elements;After assembly is completed, handcart is made to correspond with the height of handcart room by lift car, and operator can push handcart into the handcart room of middle voltage cabinet body;By this way, the assembly efficiency of middle voltage cabinet body handcart can be improved.

Description

Technical Field

[0001] This invention relates to the field of assembly platform technology, and more particularly to a centrally located handcart primary and secondary assembly line platform. Background Technology

[0002] Currently, due to industry segmentation, the frames of medium-voltage switchgear and functional handcarts are manufactured by the switchgear manufacturers, while the primary component installation and secondary wiring of the handcarts are completed by the complete equipment manufacturers. When the switchgear manufacturers ship the switchgear frames to the complete equipment manufacturers, the functional handcarts (isolation, fuse, PT, metering, etc. handcarts) are placed inside the switchgear compartment. When the complete equipment manufacturers receive the handcarts, they are in the switchgear compartment of the switchgear, about 835 mm above the ground. Because the handcarts are relatively heavy, the workers at the complete equipment manufacturers use a special transfer vehicle to pull the handcarts out of the switchgear, and then use an overhead crane to lift the handcarts and lower them to the ground. The primary and secondary line workers then install the primary and secondary components on the ground.

[0003] However, with the above operating method, the dedicated transfer vehicle has a single function: it only pulls the handcart out of the handcart compartment. Then, the overhead crane is needed to safely place the handcart on the ground from the transfer vehicle. As a result, the entire process of installing the primary and secondary components of the handcart requires multiple transfers of the handcart, making the operation process cumbersome and resulting in low assembly efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a centrally located handcart primary and secondary assembly line platform that can improve the assembly efficiency of medium-pressure cabinet handcarts.

[0005] To achieve the above objectives, the present invention provides a centrally mounted handcart primary and secondary assembly line platform, comprising a lifting car, a top frame assembly, a rotating assembly, a translating assembly, and a locking assembly; The top frame assembly is disposed on the top of the lifting vehicle, the rotating assembly is disposed on the top of the top frame assembly, the translational assembly is disposed between the top frame assembly and the rotating assembly, and the locking assembly is disposed on the side of the top frame assembly.

[0006] The top frame assembly includes a support, a front beam, a rear beam, two horizontal guide rails, two vertical guide rails, multiple electromagnetic chucks, and guide pins. The support is mounted on the top of the lifting vehicle; the front beam is fixedly connected to the support and located on the side of the support, and the front beam has a cable hole; the rear beam is fixedly connected to the support and located on the side of the support away from the front beam; two horizontal guide rails are fixedly connected to the front beam and the rear beam respectively, and are located on the top of the front beam and the rear beam respectively; two vertical guide rails are fixedly connected to the two horizontal guide rails respectively, and are located on the top of the two horizontal guide rails respectively; a plurality of electromagnetic chucks are fixedly connected to the side of the rear beam respectively; and the guide pin is fixedly connected to the side of the rear beam.

[0007] The rotating assembly includes a rotating frame, two lower rollers, two upper rollers, an upper shaft seat, and an upper shaft. The rotating frame is located between the two horizontal guide rails, and both sides of the rotating frame have slides and positioning holes; the two lower rollers are rotatably connected to the bottom sides of the rotating frame, and the two lower rollers are respectively located inside the two vertical guide rails; the two upper rollers are rotatably connected to the top sides of the rotating frame, and the two upper rollers are respectively located inside the two vertical guide rails; the upper shaft seat is fixedly connected to the side of the rotating frame; the upper shaft is rotatably connected to the inner side of the upper shaft seat.

[0008] The translation component includes a lead screw seat, a lead screw, a lead screw nut seat, two limit pins, a reduction gearbox, a stepper motor, a drive gear, a driven gear, an elevation limit switch, and a depression limit switch. The lead screw seat is fixedly connected to the side of the rear beam; one end of the lead screw is rotatably connected to the lead screw seat, and the other end is rotatably connected to the front beam through a thrust bearing, and is located between the lead screw seat and the front beam; the lead screw nut is threadedly connected to the lead screw and rotatably connected to the upper shaft, and is located on the side of the lead screw; two limit pins are respectively fixedly connected to the side of the lead screw; the reduction gearbox is fixedly connected to the side of the front beam; the stepper motor is fixedly connected to the reduction gearbox, and the output shaft of the stepper motor is fixedly connected to the input shaft of the reduction gearbox, and is located on the side of the reduction gearbox; the drive gear is fixedly connected to the output shaft of the reduction gearbox, and is located on the side of the reduction gearbox; the driven gear is fixedly connected to the side of the lead screw, and the driven gear meshes with the drive gear; the elevation travel switch is fixedly connected to the side of the front beam; the depression travel switch is fixedly connected to the side of the rear beam.

[0009] The locking assembly includes a mounting box, a locking hook, a left side seat, a tension spring, a right side seat, an unlocking ball, a locking limit switch, and a guide post. The mounting box is fixedly connected to the side of the rear beam, and the side of the mounting box has a through hole; the locking hook is rotatably connected to the mounting box and is located inside the mounting box, and the locking hook has a guide groove; the left side seat is fixedly connected to the side of the locking hook; the tension spring is fixedly connected to both the mounting box and the left side seat, and is located between the mounting box and the left side seat; the right side seat is fixedly connected to the side of the locking hook away from the left side seat; the unlocking ball is located on the side of the front beam; the locking limit switch is fixedly connected to the side of the rear beam; the guide post is fixedly connected to the mounting box and is located in the guide groove.

[0010] The lifting vehicle includes a lower frame, two front wheels, two rear wheels, a lower roller axle, a scissor arm assembly, a scissor arm beam, a hydraulic cylinder, a top frame plate, and an upper roller axle. The two front wheels are rotatably connected to the lower frame and located on both sides of the lower frame; the two rear wheels are rotatably connected to the lower frame and located on both sides of the lower frame; the lower roller axle is located inside the lower frame; the scissor arm assembly is rotatably connected to the lower frame and to the lower roller axle, and is located at the top of the lower frame; the scissor arm beam is fixedly connected to the side of the scissor arm assembly; the hydraulic cylinder is rotatably connected to the scissor arm beam, and the output rod of the hydraulic cylinder is rotatably connected to the scissor arm assembly and located on the side of the scissor arm beam; the top frame plate is rotatably connected to the scissor arm assembly and fixedly connected to the support, and is located at the top of the scissor arm assembly; the upper roller axle is rotatably connected to the scissor arm assembly and is located inside the top frame plate.

[0011] The lifting vehicle further includes an upward limit switch, a downward limit switch, a lower electromagnetic chuck, and an upper electromagnetic chuck; the upward limit switch is fixedly connected to the inner side of the lower frame; the downward limit switch is fixedly connected to the side of the lower frame; the lower electromagnetic chuck is fixedly connected to the side of the lower frame; and the upper electromagnetic chuck is fixedly connected to the side of the top frame plate.

[0012] The lifting vehicle also includes a handle, a vehicle battery, and an operation panel; the handle is fixedly connected to the side of the lower frame; the vehicle battery is fixedly connected to the side of the handle; the operation panel is fixedly connected to the top of the handle, and the operation panel is provided with an up knob, a down knob, a suction knob, a release knob, an up knob, and a down knob.

[0013] This invention discloses a centrally located handcart assembly platform for primary and secondary circuits. In use, a lifting trolley raises the rotating assembly to the same height as the handcart compartment of the medium-pressure cabinet. The operator moves the handcart from the compartment onto the rotating assembly. Subsequently, the lifting trolley lowers the top frame assembly and the rotating assembly, bringing the handcart to a height suitable for assembly. The rotating and translational components work together to allow the handcart to be flipped at different angles, facilitating the assembly of primary and secondary components. After assembly, the lifting trolley drives the top frame assembly and the rotating assembly upwards, aligning the handcart with the handcart compartment height, allowing the operator to push the handcart into the medium-pressure cabinet's compartment. A locking assembly connects the lifting trolley and the medium-pressure cabinet, preventing the lifting trolley from moving during handcart movement. This method improves the assembly efficiency of the medium-pressure cabinet handcart. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the structure of the centrally mounted handcart primary and secondary assembly line platform and the handcart of the present invention.

[0016] Figure 2 This is a structural schematic diagram of the centrally mounted handcart primary and secondary assembly line platform of the present invention.

[0017] Figure 3 This is a structural schematic diagram of the lifting vehicle of the present invention.

[0018] Figure 4 This is a structural schematic diagram of the lifting vehicle of the present invention from another perspective.

[0019] Figure 5 This is a structural schematic diagram of the top frame assembly, rotating assembly, translational assembly, and locking assembly of the present invention.

[0020] Figure 6 yes Figure 5 A magnified view of detail A.

[0021] Figure 7 This is a structural schematic diagram of the top frame assembly, rotating assembly, translational assembly, and locking assembly of the present invention from another perspective.

[0022] Figure 8 This is a schematic diagram of the front beam structure of the present invention.

[0023] Figure 9 This is a schematic diagram of the structure of the rotating component of the present invention.

[0024] Figure 10This is a structural schematic diagram of the rotating component of the present invention from another perspective.

[0025] Figure 11 This is a schematic diagram of the locking component of the present invention.

[0026] Figure 12 This is a structural diagram of a handcart.

[0027] 1-Lifting vehicle, 2-Top frame assembly, 3-Rotating assembly, 4-Transfer assembly, 5-Locking assembly, 6-Handcart, 7-Pulley, 8-Positioning pin, 11-Lower frame, 12-Front wheel, 13-Rear wheel, 14-Lower roller shaft, 15-Scissor arm assembly, 16-Scissor arm crossbeam, 17-Hydraulic cylinder, 18-Top frame plate, 19-Upper roller shaft, 21-Support, 22-Front beam, 23-Rear beam, 24-Horizontal guide rail, 25-Vertical guide rail, 26-Electromagnetic chuck, 27-Guide pin, 28-Cable hole, 31-Rotating frame, 32-Lower roller, 33-Upper roller, 34-Upper shaft seat, 35-Upper shaft, 36-Positioning hole, 37-Slide rail, 41-Screw seat, 42-Screw, 43-Screw nut seat, 44-Limit pin, 45-Reducing... 46-Gearbox, 47-Stepper motor, 48-Drive gear, 49-Elevation limit switch, 51-Mounting box, 52-Locking hook, 53-Left side seat, 54-Tension spring, 55-Right side seat, 56-Unlocking pull ball, 57-Locking limit switch, 58-Guide post, 59-Pass-through hole, 110-Upward limit switch, 111-Downward limit switch, 112-Lower electromagnetic chuck, 113-Upper electromagnetic chuck, 114-Handle, 115-Vehicle battery, 116-Operation panel, 117-Upward knob, 118-Downward knob, 119-Adsorption knob, 120-Release knob, 121-Upward knob, 122-Downward knob, 410-Plunge limit switch, 411-Thrust bearing, 510-Guide groove. Detailed Implementation

[0028] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0029] Please see Figures 1-12This invention provides a centrally mounted handcart assembly platform for primary and secondary lines, comprising a lifting trolley 1, a top frame assembly 2, a rotating assembly 3, a translating assembly 4, and a locking assembly 5. The top frame assembly 2 includes a support 21, a front beam 22, a rear beam 23, two horizontal guide rails 24, two vertical guide rails 25, multiple electromagnetic chucks 26, and guide pins 27. The rotating assembly 3 includes a rotating frame 31, two lower rollers 32, two upper rollers 33, an upper shaft seat 34, and an upper shaft 35. The translating assembly 4 includes a lead screw seat 41, a lead screw 42, a lead screw nut seat 43, two limit pins 44, a reduction gearbox 45, a stepper motor 46, a driving gear 47, a driven gear 48, and an elevation angle limit switch 49. The locking assembly 5 includes a mounting box 51, a locking hook 52, a left side seat 53, a tension spring 54, a right side seat 55, an unlocking pull ball 56, a locking limit switch 57, and a guide column 58; the lifting vehicle 1 includes a lower frame 11, two front wheels 12, two rear wheels 13, a lower roller shaft 14, a scissor arm assembly 15, a scissor arm beam 16, a hydraulic cylinder 17, a top frame plate 18, an upper roller shaft 19, an upward limit switch 110, a downward limit switch 111, a lower electromagnetic chuck 112, an upper electromagnetic chuck 113, a handle 114, a vehicle battery 115, and an operation panel 116; the aforementioned solution can improve the assembly efficiency of the medium-pressure cabinet handcart 6.

[0030] In this specific embodiment, the top frame assembly 2 is disposed on the top of the lifting vehicle 1, the rotating assembly 3 is disposed on the top of the top frame assembly 2, the translation assembly 4 is disposed between the top frame assembly 2 and the rotating assembly 3, and the locking assembly 5 is disposed on the side of the top frame assembly 2. In use, the lifting trolley 1 raises the rotating assembly 3 to the same height as the handcart 6 compartment of the medium-pressure cabinet. The operator moves the handcart 6 from the handcart 6 compartment onto the rotating assembly 3. Then, the lifting trolley 1 drives the top frame assembly 2 and the rotating assembly 3 to move the handcart 6 to a height suitable for assembly. Through the cooperation of the rotating assembly 3 and the translation assembly 4, the handcart 6 can be flipped. By flipping the handcart 6 to different angles, it is convenient for the operator to assemble primary and secondary components. After assembly, the lifting trolley 1 drives the top frame assembly 2 and the rotating assembly 3 to move upwards, so that the handcart 6 corresponds to the height of the handcart 6 compartment. The operator can then push the handcart 6 into the handcart 6 compartment of the medium-pressure cabinet. The locking assembly 5 is used to connect the lifting trolley 1 and the medium-pressure cabinet together to prevent the lifting trolley 1 from moving when the handcart 6 is moved. In this way, the assembly efficiency of the medium-pressure cabinet handcart 6 can be improved.

[0031] The support 21 is located on the top of the lifting vehicle 1; the front beam 22 is fixedly connected to the support 21 and is located on the side of the support 21, and the front beam 22 is provided with a wire hole 28; the rear beam 23 is fixedly connected to the support 21 and is located on the side of the support 21 away from the front beam 22; two horizontal guide rails 24 are fixedly connected to the front beam 22 and the rear beam 23 respectively, and are located on the top of the front beam 22 and the rear beam 23 respectively; two vertical guide rails 25 are fixedly connected to the two horizontal guide rails 24 respectively, and are located on the top of the two horizontal guide rails 24 respectively; multiple electromagnetic chucks 26 are fixedly connected to the side of the rear beam 23 respectively; and the guide pin 27 is fixedly connected to the side of the rear beam 23. The horizontal guide rail 24 and the vertical guide rail 25 are used to guide the rotating assembly 3. The electromagnetic chuck 26 is used to magnetically attract the medium-pressure cabinet to prevent the lifting vehicle 1 from moving. The support 21, the front beam 22, and the rear beam 23 are used to support the translation assembly 4. The medium-pressure cabinet is provided with guide holes adapted to the guide pin 27. Inserting the guide pin 27 into the guide holes can position and align the top frame assembly 2 and the rotating assembly 3 with the medium-pressure cabinet.

[0032] Secondly, the rotating frame 31 is located between the two horizontal guide rails 24, and both sides of the rotating frame 31 have slides 37 and positioning holes 36; the two lower rollers 32 are rotatably connected to the bottom sides of the rotating frame 31, and the two lower rollers 32 are respectively located inside the two vertical guide rails 25; the two upper rollers 33 are rotatably connected to the upper sides of the rotating frame 31, and the two upper rollers 33 are respectively located inside the two vertical guide rails 25; the upper shaft seat 34 is fixedly connected to the side of the rotating frame 31; the upper shaft 35 is rotatably connected to the inner side of the upper shaft seat 34. The handcart 6 is equipped with pulleys 7 and positioning pins 8 on both sides. The positioning holes 36 are adapted to the positioning pins 8. The handcart 6 is moved from the handcart 6 compartment of the medium-pressure cabinet to the rotating frame 31. The pulleys 7 of the handcart 6 are located in the slide rails 37. The slide rails 37 provide guidance for the handcart 6 until the positioning pins 8 on the handcart 6 are inserted into the positioning holes 36. The rotating frame 31 is used to support the handcart 6 and complete the transfer of the handcart 6. The translation component 4 drives the upper shaft seat 34 to translate and rotate via the upper shaft 35. Under the guidance of the horizontal guide rail 24 and the vertical guide rail 25, the lower roller 32 and the upper roller 33 cause the rotating frame 31 to rotate, thereby allowing the handcart 6 to be flipped.

[0033] Meanwhile, the lead screw seat 41 is fixedly connected to the side of the rear beam 23; one end of the lead screw 42 is rotatably connected to the lead screw seat 41, and the other end is rotatably connected to the front beam 22 through a thrust bearing 411, and is located between the lead screw seat 41 and the front beam 22; the lead screw nut seat 43 is threadedly connected to the lead screw 42 and rotatably connected to the upper shaft 35, and is located on the side of the lead screw 42; the two limiting pins 44 are respectively fixedly connected to the side of the lead screw 42; the reduction gearbox 45 is fixedly connected to the side of the front beam 22; the stepper motor 4 The stepper motor 46 is fixedly connected to the gearbox 45, and the output shaft of the stepper motor 46 is fixedly connected to the input shaft of the gearbox 45 and located on the side of the gearbox 45; the drive gear 47 is fixedly connected to the output shaft of the gearbox 45 and located on the side of the gearbox 45; the driven gear 48 is fixedly connected to the side of the lead screw 42, and the driven gear 48 meshes with the drive gear 47; the elevation angle limit switch 49 is fixedly connected to the side of the front beam 22; the depression angle limit switch 410 is fixedly connected to the side of the rear beam 23. Two thrust bearings 411 are located on either side of the front beam 22, jointly supporting the lead screw 42. Two limiting pins 44 are located on either side of the two thrust bearings 411, used to limit the thrust bearings 411. The stepper motor 46 is turned on, and the stepper motor 46 drives the drive gear 47 to rotate via the reduction gearbox 45. The drive gear 47 drives the driven gear 48 and the lead screw 42 to rotate. The rotation of the lead screw 42 causes the lead screw nut 43 to translate. The lead screw nut 43 is driven by the upper shaft 35. When the upper shaft seat 34 is moved to translate and rotate, the lower roller 32 and the upper roller 33, guided by the horizontal guide rail 24 and the vertical guide rail 25, will cause the rotating frame 31 to rotate, thereby allowing the handcart 6 to be flipped. After the nut seat 43 moves forward or backward to its limit position, it will contact the elevation limit switch 49 or the depression limit switch 410. After being triggered, the elevation limit switch 49 and the depression limit switch 410 will send a signal to turn off the power of the stepper motor 46, causing the rotating frame 31 to stop rotating.

[0034] Additionally, the mounting box 51 is fixedly connected to the side of the rear beam 23, and the side of the mounting box 51 is provided with a through hole 59; the locking hook 52 is rotatably connected to the mounting box 51 and is located inside the mounting box 51, and the locking hook 52 is provided with a guide groove 510; the left side seat 53 is fixedly connected to the side of the locking hook 52; the tension spring 54 is fixedly connected to the mounting box 51 and the left side seat 53 respectively, and is located between the mounting box 51 and the left side seat 53; the right side seat 55 is fixedly connected to the side of the locking hook 52 away from the left side seat 53; the unlocking pull ball 56 is located on the side of the front beam 22; the locking limit switch 57 is fixedly connected to the side of the rear beam 23; the guide post 58 is fixedly connected to the mounting box 51 and is located in the guide groove 510. The medium-pressure cabinet has a mating hole that engages with the locking hook 52. When the locking hook 52 is inserted into the mating hole, the inclined surface of the locking hook 52 is pushed, and the locking hook 52 rotates as a whole, causing the tension spring 54 to be compressed. After the locking hook 52 is fully inserted into the mating hole, the tension spring 54 drives the locking hook 52 to reset, thereby hooking the medium-pressure cabinet and achieving mechanical locking. At the same time, the locking limit switch 57 will contact the side of the medium-pressure cabinet and send a signal, thereby triggering the electromagnetic chuck 26 to be energized. The electromagnetic chuck 26 is attracted to the medium-pressure cabinet, achieving connection and fixation. The guide post 58 and the guide groove 510 cooperate to limit the rotation angle of the locking hook 52; a steel wire rope (not shown in the figure) is connected to the right side seat 55. One end of the steel wire rope is connected to the right side seat 55, and the other end passes through the through hole 59 and the wire hole 28 and is connected to the unlocking pull ball 56. When unlocking, the operator pulls the unlocking pull ball 56 to drive the locking hook 52 to rotate, so that the locking hook 52 no longer hooks the medium pressure cabinet and releases the lock.

[0035] Furthermore, the two front wheels 12 are rotatably connected to the lower frame 11 and located on both sides of the lower frame 11; the two rear wheels 13 are rotatably connected to the lower frame 11 and located on both sides of the lower frame 11; the lower roller shaft 14 is located inside the lower frame 11; the scissor arm assembly 15 is rotatably connected to the lower frame 11 and rotatably connected to the lower roller shaft 14, and located at the top of the lower frame 11; the scissor arm beam 16 is fixedly connected to the side of the scissor arm assembly 15; the hydraulic cylinder 17 is rotatably connected to the scissor arm beam 16, and the output rod of the hydraulic cylinder 17 is rotatably connected to the scissor arm assembly 15 and located on the side of the scissor arm beam 16; the top frame plate 18 is rotatably connected to the scissor arm assembly 15 and fixedly connected to the support 21, and located at the top of the scissor arm assembly 15; the upper roller shaft 19 is rotatably connected to the scissor arm assembly 15 and located inside the top frame plate 18. Both sides of the lower roller shaft 14 have rollers that can roll inside the lower frame 11, and both sides of the upper roller shaft 19 have rollers that can roll inside the top frame plate 18. By controlling the extension or retraction of the output rod of the hydraulic cylinder 17, the scissor arm assembly 15 can be unfolded or folded, thereby allowing the top frame plate 18 to rise or fall. The front wheel 12 and the rear wheel 13 facilitate the movement of the lifting vehicle 1.

[0036] Furthermore, the upward travel switch 110 is fixedly connected to the inner side of the lower frame 11; the downward travel switch 111 is fixedly connected to the side of the lower frame 11; the lower electromagnetic chuck 112 is fixedly connected to the side of the lower frame 11; and the upper electromagnetic chuck 113 is fixedly connected to the side of the top frame plate 18. When the top frame plate 18 rises, the lower roller shaft 14 will translate. When the lower roller shaft 14 contacts the upward travel switch 110, it triggers the upward travel switch 110 to control the hydraulic cylinder 17 to stop. When the top frame plate 18 descends to contact the upward travel switch 110, it triggers the downward travel switch 111 to control the hydraulic cylinder 17 to stop, thereby controlling the height position of the top frame plate 18. Energizing the lower electromagnetic chuck 112 and the upper electromagnetic chuck 113 allows them to adhere to the medium-pressure cabinet, thus fixing the position of the lifting vehicle 1.

[0037] Finally, the handle 114 is fixedly connected to the side of the lower frame 11; the vehicle battery 115 is fixedly connected to the side of the handle 114; the operation panel 116 is fixedly connected to the top of the handle 114, and the operation panel 116 is provided with an upward knob 117, a downward knob 118, a suction knob 119, a release knob 120, an upward knob 121, and a downward knob 122. The vehicle battery 115 is used to power the electrical equipment on this assembly platform; the upward knob 117 and the downward knob 118 are used to control the upward and downward movement of the top frame plate 18, respectively; the suction knob 119 and the release knob 120 are used to control the power supply to the electromagnetic chuck 26, the lower electromagnetic chuck 112, and the upper electromagnetic chuck 113, respectively; the upward knob 121 and the downward knob 122 are used to control the stepper motor 46, causing the rotating frame 31 to rotate.

[0038] When using this invention, by controlling the extension of the output rod of the hydraulic cylinder 17, the scissor arm assembly 15 can be deployed, allowing the top frame plate 18 to rise, raising the height of the rotating assembly 3 to match the height of the handcart 6 chamber of the medium-pressure cabinet, thus pushing the lifting cart 1 to dock with the medium-pressure cabinet. The medium-pressure cabinet has a guide hole adapted to the guide pin 27. Inserting the guide pin 27 into the guide hole can position and align the top frame assembly 2 and the rotating assembly 3 with the medium-pressure cabinet. During the alignment process, the locking hook 52 is inserted into the mating hole on the medium-pressure cabinet, and the inclined surface on the locking hook 52 is subjected to... When pushed, the locking hook 52 rotates as a whole, compressing the tension spring 54. After the locking hook 52 is fully inserted into the mating hole, the tension spring 54 drives the locking hook 52 to reset, thereby hooking the medium-pressure cabinet and achieving mechanical locking. At the same time, the locking limit switch 57 contacts the side of the medium-pressure cabinet and sends a signal, thereby triggering the electromagnetic chuck 26 to be energized. The electromagnetic chuck 26 is attracted to the medium-pressure cabinet, achieving connection and fixation. Operating the suction knob 119 can energize the upper electromagnetic chuck 113 and the lower electromagnetic chuck 112, allowing them to be attracted to the medium-pressure cabinet. The operator moves the handcart 6 from the handcart compartment to the rotating frame 31. The pulley 7 of the handcart 6 is located in the slide rail 37, which provides guidance for the handcart 6 until the positioning pin 8 on the handcart 6 is inserted into the positioning hole 36. The rotating frame 31 supports the handcart 6, completing the transfer of the handcart 6. Subsequently, the operator de-energizes the electromagnetic chuck 126, the lower electromagnetic chuck 112, and the upper electromagnetic chuck 113 by operating the release knob 120. The operator then pulls the unlocking ball 56, causing the locking hook 52 to rotate, thus releasing the lock from the medium-pressure cabinet and disengaging it. The lifting trolley 1 is then moved to the assembly location. By controlling the hydraulic cylinder 17, the top frame plate 18 can be lowered, adjusting the height of the handcart 6 to a position convenient for the operator. By controlling the stepper motor 46, the tilting angle of the handcart 6 can be adjusted to facilitate the assembly of primary and secondary components. After assembly, the operator returns the handcart 6 to the handcart compartment of the medium-pressure cabinet in the same manner. This method improves the assembly efficiency of the medium-pressure cabinet handcart 6.

[0039] This invention provides a centrally located handcart assembly platform for primary and secondary wiring. Through the use of a lifting cart 1, the handcart 6 exiting the cabinet can be raised and lowered to any required height without secondary transfer. It can accommodate the installation height of primary components and the height requirements of secondary wiring. Furthermore, after both primary and secondary work are completed, the handcart 6 can be directly returned to its original handcart compartment in the switchgear using the lifting cart 1 (without the need for crane operation or secondary loading / unloading). The height range of the lifting cart 1 is limited by the setting of the upward travel switch 110 and the downward travel switch 111. The lifting range can also be adjusted for different locations and personnel of different heights by adjusting the positions of the two travel switches. Through the cooperation of the lead screw 42 and the lead screw seat 41 on the rotating frame 31, the height range of the handcart 6 can be further adjusted. The handcart 6 can be rotated to any required angle to accommodate the installation of primary components and secondary wiring. The use of a stepper motor 46 and transmission mechanism enables electric operation of the lead screw 42 and lead screw seat 41, while also providing a manual operation handle interface. The starting and ending angles of the rotating frame 31 are limited by the elevation limit switch 49 and the depression limit switch 410, and these angles can be adjusted by changing the position of the limit switches. The two guide pins 27 on the rear beam 23 facilitate smoother and more convenient integration between the platform and the cabinet. The operation panel 116 features an upward knob 117, a downward knob 118, a suction knob 119, a release knob 120, an upward rotation knob 121, and a downward rotation knob 122, making platform operation faster.

[0040] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that implementing all or part of the above embodiments and making equivalent changes in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A mid-mounted handcart primary and secondary assembly line platform, characterized in that, Includes a lifting platform, a top frame assembly, a rotating assembly, a translating assembly, and a locking assembly; The top frame assembly is disposed on the top of the lifting vehicle, the rotating assembly is disposed on the top of the top frame assembly, the translational assembly is disposed between the top frame assembly and the rotating assembly, and the locking assembly is disposed on the side of the top frame assembly.

2. The assembly platform for the primary and secondary lines of the mid-mounted handcart as described in claim 1, characterized in that, The top frame assembly includes a support, a front beam, a rear beam, two horizontal guide rails, two vertical guide rails, multiple electromagnetic chucks, and guide pins. The support is mounted on the top of the lifting vehicle; the front beam is fixedly connected to the support and located on the side of the support, and the front beam has a cable hole; the rear beam is fixedly connected to the support and located on the side of the support away from the front beam; two horizontal guide rails are fixedly connected to the front beam and the rear beam respectively, and are located on the top of the front beam and the rear beam respectively; two vertical guide rails are fixedly connected to the two horizontal guide rails respectively, and are located on the top of the two horizontal guide rails respectively; a plurality of electromagnetic chucks are fixedly connected to the side of the rear beam respectively; and the guide pin is fixedly connected to the side of the rear beam.

3. The assembly platform for the primary and secondary lines of the mid-mounted handcart as described in claim 2, characterized in that, The rotating assembly includes a rotating frame, two lower rollers, two upper rollers, an upper shaft seat, and an upper shaft; The rotating frame is located between the two horizontal guide rails, and both sides of the rotating frame have slides and positioning holes; the two lower rollers are rotatably connected to the bottom sides of the rotating frame, and the two lower rollers are respectively located inside the two vertical guide rails; the two upper rollers are rotatably connected to the top sides of the rotating frame, and the two upper rollers are respectively located inside the two vertical guide rails; the upper shaft seat is fixedly connected to the side of the rotating frame; the upper shaft is rotatably connected to the inner side of the upper shaft seat.

4. The assembly platform for the primary and secondary lines of the mid-mounted handcart as described in claim 3, characterized in that, The translation component includes a lead screw seat, a lead screw, a lead screw nut seat, two limit pins, a reduction gearbox, a stepper motor, a drive gear, a driven gear, an elevation limit switch, and a depression limit switch; The lead screw seat is fixedly connected to the side of the rear beam; one end of the lead screw is rotatably connected to the lead screw seat, and the other end is rotatably connected to the front beam through a thrust bearing, and is located between the lead screw seat and the front beam; the lead screw nut is threadedly connected to the lead screw and rotatably connected to the upper shaft, and is located on the side of the lead screw; the two limiting pins are respectively fixedly connected to the side of the lead screw; The gearbox is fixedly connected to the side of the front beam; The stepper motor and the gearbox are fixedly connected, and the output shaft of the stepper motor is fixedly connected to the input shaft of the gearbox and is located on the side of the gearbox. The drive gear is fixedly connected to the output shaft of the gearbox and is located on the side of the gearbox; the driven gear is fixedly connected to the side of the lead screw and meshes with the drive gear; the elevation angle limit switch is fixedly connected to the side of the front beam; the depression angle limit switch is fixedly connected to the side of the rear beam.

5. The mid-mounted handcart primary and secondary line assembly platform as described in claim 4, characterized in that, The locking assembly includes a mounting box, a locking hook, a left side seat, a tension spring, a right side seat, an unlocking ball, a locking limit switch, and a guide post; The mounting box is fixedly connected to the side of the rear beam, and the side of the mounting box has a through hole; the locking hook is rotatably connected to the mounting box and is located inside the mounting box, and the locking hook has a guide groove; the left side seat is fixedly connected to the side of the locking hook; the tension spring is fixedly connected to both the mounting box and the left side seat, and is located between the mounting box and the left side seat; the right side seat is fixedly connected to the side of the locking hook away from the left side seat; the unlocking ball is located on the side of the front beam; the locking limit switch is fixedly connected to the side of the rear beam; the guide post is fixedly connected to the mounting box and is located in the guide groove.

6. The assembly platform for the primary and secondary lines of the mid-mounted handcart as described in claim 5, characterized in that, The lifting vehicle includes a lower frame, two front wheels, two rear wheels, a lower roller axle, a scissor arm assembly, a scissor arm beam, a hydraulic cylinder, a top frame plate, and an upper roller axle. The two front wheels are rotatably connected to the lower frame and located on both sides of the lower frame; the two rear wheels are rotatably connected to the lower frame and located on both sides of the lower frame; the lower roller axle is located inside the lower frame; the scissor arm assembly is rotatably connected to the lower frame and to the lower roller axle, and is located at the top of the lower frame; the scissor arm beam is fixedly connected to the side of the scissor arm assembly; the hydraulic cylinder is rotatably connected to the scissor arm beam, and the output rod of the hydraulic cylinder is rotatably connected to the scissor arm assembly and located on the side of the scissor arm beam; the top frame plate is rotatably connected to the scissor arm assembly and fixedly connected to the support, and is located at the top of the scissor arm assembly; the upper roller axle is rotatably connected to the scissor arm assembly and is located inside the top frame plate.

7. The mid-mounted handcart primary and secondary assembly line platform as described in claim 6, characterized in that, The lifting vehicle also includes an upward limit switch, a downward limit switch, a lower electromagnetic chuck, and an upper electromagnetic chuck; the upward limit switch is fixedly connected to the inner side of the lower frame; the downward limit switch is fixedly connected to the side of the lower frame; the lower electromagnetic chuck is fixedly connected to the side of the lower frame; and the upper electromagnetic chuck is fixedly connected to the side of the top frame plate.

8. The assembly platform for the primary and secondary lines of the mid-mounted handcart as described in claim 7, characterized in that, The lifting vehicle also includes a handle, a vehicle battery, and an operation panel; the handle is fixedly connected to the side of the lower frame; the vehicle battery is fixedly connected to the side of the handle; the operation panel is fixedly connected to the top of the handle, and the operation panel is provided with an up knob, a down knob, a suction knob, a release knob, an up knob, and a down knob.

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