Movable car lifting jack assembly

Abstract

The invention provides a movable car lifting jack assembly, and relates to the field of car lifting jacks. The movable car lifting machine assembly comprises a first car lifting unit and a second car lifting unit, wherein a first driving mechanism, a first bearing mechanism and a first moving mechanism are arranged on the first car lifting unit; a second driving mechanism, a second bearing mechanism and a second moving mechanism are arranged on each second unwheeling unit, and inserting grooves are formed in the second bearing mechanisms; the PLC unit is in signal connection with the first driving mechanism, the first moving mechanism and the second driving mechanism; the first bearing mechanism and the second bearing mechanism are each provided with a supporting head, and the supporting heads and the inserting grooves can be driven by the first driving mechanism or the second driving mechanism to be connected in an inserted mode or separated from each other. When the supporting head is inserted into the inserting groove, the PLC unit controls the first moving mechanism of the first car lifting unit to move and can synchronously drive the second moving mechanisms of the second car lifting units to move. According to the invention, the position arrangement precision can be improved, and the safety and stability of equipment are improved.

Description

Technical Field

[0001] The present invention relates to the field of car lifting machines, and particularly to a mobile car lifting machine assembly. Background Art

[0002] A car lifting machine is a device specifically used for lifting and bearing the weight of railway vehicles during maintenance operations. With the rapid development of high-speed railways, subways, light rails, and trams in China, the application of car lifting machines has become increasingly popular. It can be effectively used for the replacement of the entire train bogies, the disassembly, assembly, and repair of vehicles. Currently, the car lifting machines used in the railway industry are mainly divided into mobile car lifting machines and fixed car lifting machines. Among them, the overall fixed car lifting machine is usually installed in an underground foundation pit and mainly consists of a mechanical system structure and an electrical system structure. Its mechanical structure includes a steel structure part, a bogie car lifting unit, a car body car lifting unit, and a pit cover plate, etc. The mobile car lifting machine mainly consists of a mechanical and electrical system. Among them, the mechanical system structure mainly includes a frame, a bearing frame, a support head, a lifting mechanism, a moving mechanism, etc.

[0003] In practical applications, through comparison, it can be seen that the mechanical structure of the fixed car lifting machine is more complex than that of the mobile car lifting machine. There are more components in a single unit, with both car body lifting and bogie lifting, while the mobile car lifting machine only needs to set a single lifting body; the mechanical synchronization of the fixed car lifting machine is better, but its drive extension connecting rod components are more, and the installation and maintenance requirements are higher; in terms of the electrical system, the fixed car lifting machine is also more complex. Therefore, in order to control costs, simplify the structure, and enhance flexibility, the mobile car lifting machine is more widely used. However, the existing mobile car lifting machines require multiple operators to operate, require manual alignment, take a long time for alignment, and at the same time, the alignment accuracy will also be affected by manual operation, which not only consumes manpower, but also reduces the installation accuracy, reduces the stability of lifting, and increases the safety risks of maintenance personnel and operators during work. Summary of the Invention

[0004] The present invention provides a mobile car lifting machine assembly that can automatically perform position arrangement, improve the accuracy of position arrangement while reducing the amount of manual work, and enhance the safety and stability of the equipment, in order to solve the problems that the existing mobile car lifting machines require multiple people to operate, manual alignment, take a long time, have low alignment accuracy, are laborious and inefficient, and have risks in stability and safety.

[0005] The technical solution adopted by the present invention is as follows: A mobile car lifting machine assembly, comprising: A first car lifting unit, on which a first driving mechanism and a first bearing mechanism are provided. The first driving mechanism can drive the first bearing mechanism to lift, and the first car lifting unit is provided with a first moving mechanism; A number of second car units, on which a second driving mechanism and a second bearing mechanism are provided, the second driving mechanism can drive the second bearing mechanism to lift, and a slot is provided on the second bearing mechanism; and the second car unit is provided with a second moving mechanism; and a PLC unit, which is signal-connected to the first driving mechanism, the first moving mechanism and the second driving mechanism; Wherein, a carrier head is provided on both the first bearing mechanism and the second bearing mechanism, and the carrier head and the slot can be inserted or separated by driving through the first driving mechanism or the second driving mechanism; when the carrier head is inserted into the slot, the PLC unit controls the first moving mechanism of the first car unit to move and can synchronously drive the second moving mechanism of the number of second car units to move.

[0006] Further, the first car unit has a first frame, the first driving mechanism is arranged on the top plate of the first frame, the first bearing mechanism is arranged between two support plates of the first frame, and the first moving mechanism is arranged on the bottom plate of the first frame.

[0007] Further, the first driving mechanism includes a servo motor and a speed reducer that cooperate with each other. Both the servo motor and the speed reducer are arranged above the top plate. The output end of the speed reducer is connected with a lead screw, the lead screw is threadedly connected with a nut, and the nut is connected with the first bearing mechanism, so that when the servo motor rotates, it can drive the first bearing mechanism to lift between the two support plates.

[0008] Further, first clamping plates are arranged on both sides of the first bearing mechanism, and the two first clamping plates are respectively arranged close to the support plates on both sides.

[0009] Further, at least two groups of track wheels are rotatably arranged on the two first clamping plates, and vertical guide rails are arranged on both sides of the two support plates; and at least two groups of the track wheels are respectively embedded in the guide rails on both sides of the support plates, and the track wheels can move up and down along the guide rails.

[0010] Further, one end of the first clamping plate close to the carrier head on the first bearing mechanism has a first bearing end docking structure; and the second car unit has a second frame, and second clamping plates are arranged on both sides of the second bearing mechanism, and one end of the second clamping plate close to the second frame has a lifting end docking structure; the first bearing end docking structure and the lifting end docking structure can be docked.

[0011] Further, one end of the second clamping plate close to the carrier head on the second bearing mechanism has a second bearing end docking structure; the second bearing end docking structure and the lifting end docking structure can be docked.

[0012] Further, a plurality of extension parts are arranged on the first bearing mechanism. The support head includes a first support head and an extended support head arranged on the extension part. The extended support head can be inserted into or separated from the slot through the first driving mechanism or the second driving mechanism. A circular module sliding table is arranged on the first bearing mechanism. The extension part is slidably connected to the circular module sliding table through a slider and can be driven by the circular module sliding table to change the angle between the extended support head and the first support head on the track of the circular module sliding table.

[0013] Further, a universal wheel and a locking device are arranged on the first moving mechanism and / or the second moving mechanism. The locking device includes a slideway arranged in a steering connecting piece above the universal wheel. A magnetic attraction device is arranged at one end of the slideway, and a spring is arranged at the other end. The spring is connected to a telescopic block slidably arranged in the slideway. A worm is connected below the telescopic block, and a worm gear is arranged on the side of the universal wheel. When the PLC unit controls the magnetic attraction device to release the telescopic block, the worm can abut against the worm gear to lock the universal wheel.

[0014] Further, a lifting device is arranged on the first moving mechanism and / or the second moving mechanism. The lifting device includes a housing. A lifting motor is arranged above the housing. The output end of the lifting motor is connected with a screw rod. A nut seat is embedded in the housing. The nut seat is threadedly connected with the screw rod. A universal wheel is connected below the nut seat. The lifting motor can drive the universal wheel to rise or fall so as to extend out of or retract into the housing.

[0015] The beneficial effects of the present invention are as follows: 1. By arranging a bearing mechanism and a driving mechanism on the car lifting unit, and arranging a support head and a slot on the bearing mechanism, and relying on the cooperation between the slot and the support heads on each car lifting unit, the support heads on the car lifting units can be used to abut and lift the locomotive, and at the same time can be inserted for linkage between multiple car lifting units. Cooperating with the moving mechanisms of each car lifting unit, multiple car lifting units can form a whole before arrangement and move and be arranged together. Therefore, with only one actively driven moving mechanism arranged on the first car lifting unit, the movement and arrangement of multiple car lifting units can be controlled by the PLC unit, realizing efficient automatic operation, improving the accuracy of the arrangement position of the car lifting units, and solving the problems in the prior art that a mobile car lifting machine requires multiple people to operate, manual alignment, takes a long time, has a low alignment accuracy, is laborious and inefficient, and has risks of stability and safety. 2. The present invention also sets up a first bearing end docking structure, a second bearing end docking structure, and a lifting end docking structure that cooperate with each other, so that when the first car lifting unit drives the entire car lifting assembly, the movement states of the car lifting units are mutually restricted, and the frontally docked second car lifting units can all maintain stable controllability of their orientations and positions, avoiding deviations in the orientations and positions of the second car lifting units during layout, which reduces safety and stability and brings unnecessary potential accident hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Stereoscopic schematic diagram of the car lifter assembly according to Embodiment 1 of the present invention; Figure 2 Side view of the car lifter assembly according to Embodiment 1 of the present invention; Figure 3 Stereoscopic schematic diagram of the first car lifting unit according to Embodiment 1 of the present invention; Figure 4 Stereoscopic schematic diagram of the second car lifting unit according to an embodiment of the present invention; Figure 5 Stereoscopic schematic diagram of the second bearing mechanism according to an embodiment of the present invention; Figure 6 Stereoscopic schematic diagram of the second moving mechanism according to an embodiment of the present invention; Figure 7 Structural schematic diagram of the locking device according to Embodiment 1 of the present invention; Figure 8 Stereoscopic schematic diagram of the first car lifting unit according to Embodiment 2 of the present invention; Figure 9 Stereoscopic schematic diagram of the first car lifting unit according to Embodiment 3 of the present invention; Figure 10 Top view of the first car lifting unit according to Embodiment 3 of the present invention; Figure 11 Stereoscopic schematic diagram of the extension part according to Embodiment 3 of the present invention; Figure 12 Structural schematic diagram of the lifting device according to Embodiment 4 of the present invention.

[0017] Reference numerals: 100 - first frame, 110 - top plate, 120 - support plate, 122 - guide rail, 130 - bottom plate; 210 - servo motor, 220 - reducer, 230 - lead screw, 240 - nut; 300 - first clamping plate, 310 - first bearing end docking structure, 330 - track wheel, 340 - adjusting handwheel; 400 - first inner connection part; 500 - first outer connection part, 501 - first groove, 510 - mounting plate, 520 - first support head; 600 - First moving mechanism; 700 - Extension part, 710 - Extension board, 712 - Slide block, 714 - Arc-shaped chute, 720 - Extension support head, 740 - Extension frame; 800 - Ring-shaped module slide table; 2100 - Second frame, 2300 - Second clamping plate, 2310 - Second bearing end docking structure, 2320 - Lifting end docking structure, 2400 - Second internal connection part, 2410 - Slot, 2430 - Shaft groove, 2500 - Second external connection part, 2501 - Second groove, 2520 - Second support head, 2600 - Second moving mechanism, 2610 - Universal wheel, 2620 - Locking device, 2621 - Slideway, 2622 - Telescopic block, 2623 - Worm, 2624 - Worm gear, 2625 - Spring, 2626 - Adjusting bearing, 2627 - Linear chute, 2628 - Magnetic attraction device, 2630 - Steering connecting piece, 2640 - Lifting device, 2641 - Housing, 2642 - Lifting motor, 2643 - Screw, 2644 - Nut seat, 2650 - Flat plate part. Specific embodiments

[0018] The present invention will be further described in detail below through specific embodiments: Embodiment 1 For the mobile car lifter in the prior art, its arrangement usually requires at least 7 staff members to operate. The main arrangement method is that the staff manually operate the moving mechanism of the mobile car lifter to reach each designated position. This operation mode of the mobile car lifter, on the one hand, requires the operator to spend a lot of time and energy for alignment, reducing the work efficiency; on the other hand, the accuracy of manual alignment is relatively low, and it also reduces the stability when lifting the locomotive. For the mobile car lifter with a relatively small operation space and lower safety than the fixed car lifter, it will undoubtedly increase the safety risks for the staff during arrangement and for the maintenance staff during maintenance.

[0019] In view of the above problems in the prior art, this embodiment provides a mobile car lifter assembly, which is used to lift the locomotive when the locomotive needs to be repaired or maintained, facilitating the operation of the maintenance staff. This mobile car lifter assembly can automatically arrange the position, reducing the manual workload while improving the accuracy of position arrangement and enhancing the safety and stability of the equipment. Please refer to Figures 1 - 7 , this mobile car lifter assembly mainly includes: a first car lifting unit, several second car lifting units and a PLC unit (not shown in the figure), etc.

[0020] The first car lifting unit, as the common driving unit of each unit in the entire mobile car lifter assembly, can arrange each driving unit along a specified route under the control of the PLC unit. As Figure 3As shown in the figure, the main components of the first car unit include: the first frame 100, the first driving mechanism arranged on the first frame 100, the first bearing mechanism driven by the first driving mechanism, and the first moving mechanism 600 under the first frame 100, etc.

[0021] Among them, the first frame 100 constitutes the main support structure of the first car unit. Above the first frame 100, there is a rectangular top plate 110; the top plate 110 is horizontally arranged, and support plates 120 are connected to the lower parts of both ends thereof; the two support plates 120 are vertically arranged, a bottom plate 130 is arranged between the lower ends of the two support plates 120, and vertical guide rails 122 are arranged in parallel on both sides of the two support plates 120.

[0022] The first driving mechanism of this embodiment is mainly arranged at the position between the top plate 110 and the two support plates 120, and is used to provide the power for lifting the locomotive. The upper part of the first driving mechanism is a servo motor 210 and a speed reducer 220 that cooperate with each other, both of which are arranged above the top plate 110, and the servo motor 210 is signal-connected to the PLC unit and works under the control of the PLC unit. The speed reducer 220 is connected to the output end of the servo motor 210 for transmission, and the output end of the speed reducer 220 itself passes through the top plate 110 and is connected to the upper end of a lead screw 230 below the top plate 110 through a coupling, and the lead screw 230 is driven by the speed reducer 220 to rotate. Moreover, the upper part of the lead screw 230 is rotatably arranged on the top plate 110 through a bearing, and its lower part is also rotatably arranged on the bottom plate 130 through a bearing, and protective covers are arranged at both ends of the lead screw 230 to prevent the lead screw 230 from contacting the outside during rotation and causing interference. A nut 240 is sleeved on the middle part of the lead screw 230, the inner side surface of the nut 240 is threadedly connected to the lead screw 230, and the lower surface of the nut 240 is connected to the first bearing mechanism below.

[0023] The first load-bearing mechanism is mainly arranged between two support plates 120 and is used to lift the lower part of the locomotive. The first load-bearing mechanism mainly consists of first clamping plates 300 symmetrically arranged on both sides, and a first inner connecting part 400 and a first outer connecting part 500 arranged between the two first clamping plates 300, etc. Among them, the upper part of the first inner connecting part 400 is connected to the lower end of the nut 240, and both sides of the first inner connecting part 400 are connected to the two first clamping plates 300. The first clamping plates 300 are parallel to the support plates 120 on both sides and are arranged close to the support plates 120 on both sides. At the same time, the front ends of the two first clamping plates 300 extend outwards and are jointly connected to the first outer connecting part 500. Below the first outer connecting part 500 is an arched mounting plate 510. The side plates on both sides of the mounting plate 510 are fixed between the first clamping plates 300 through connecting rods. The upper part of the mounting plate 510 is provided with a protruding first support head 520. The first support head 520 is generally in the shape of a cuboid and is the end that directly abuts against the locomotive body when lifting the locomotive. In addition, between the two first clamping plates 300, in addition to the first inner connecting part 400 and the first outer connecting part 500, a plurality of connecting rods, shift rods, etc. for improving safety and stability during lifting are also provided. And between the two first clamping plates 300, two groups of track wheels 330 are also provided. The rotating shafts of the track wheels 330 pass through the first clamping plates 300 on both sides and are rotatably connected to the first clamping plates 300 on both sides through bearings. The rotating wheels of the two track wheels 330 are connected to both ends of their rotating shafts and are located outside the two first clamping plates 300. At the same time, the rotating wheels of the two groups of track wheels 330 are embedded in the guide rails 122 on the support plates 120 and can move up and down along the guide rails 122. In addition, the two groups of track wheels 330 are respectively arranged on the front and rear sides of the two support plates 120, so as to limit the entire first load-bearing mechanism to only move up and down along the guide rails 122 and maintain the stability of the up and down movement of the first load-bearing mechanism during lifting. And in this embodiment, one end of the first clamping plate 300 close to the first support head 520 is recessed in an arc shape inward, having a first load-bearing end docking structure 310.

[0024] The first moving mechanism 600 of the first car-lifting unit is an AGV cart. As the navigation and transportation part, the AGV cart is responsible for accurately transporting the first car-lifting unit and other car-lifting units thereon to the designated position. And the first moving mechanism 600 is signal-connected to the PLC unit. The PLC unit performs interlocking control on the first driving mechanism of the first car-lifting unit and the control system of the AGV cart to realize the coordinated operation of the two.

[0025] In this embodiment, the three second car-lifting units are all driven by the first driving unit. As Figure 4 、 Figure 5As shown in the figure, the main components of the second car unit include: the second frame 2100, the second drive mechanism provided on the second frame 2100, the second bearing mechanism driven by the second drive mechanism, and the second moving mechanism 2600 below the second frame 2100, etc.

[0026] Among them, the structures of the second frame 2100 and the second drive mechanism can adopt the same structures as those of the first frame 100 and the first drive mechanism of the first car unit. The second bearing mechanism needs to be deformed to a certain extent on the basis of the first bearing mechanism. First, a slot 2410 roughly in the shape of a cuboid is provided at the lower part of the second inner connection part 2400 of the second bearing mechanism. A second support head 2520 is also provided above the second outer connection part 2500 of the second bearing mechanism. The second support head 2520 is roughly the same shape as the first support head 520, and the shape of the slot 2410 is adapted to both of them. Both the second support head 2520 and the first support head 520 can be inserted into the slot 2410. Secondly, one end of the second clamping plate 2300 close to the second support head 2520 is also recessed inward in an arc shape, having a second bearing end docking structure 2310. At the same time, one end of the second clamping plate 2300 close to the second frame 2100 is convex outward in an arc shape, having a lifting end docking structure 2320. The lifting end docking structure 2320 can be docked with both the first bearing end docking structure 310 and the second bearing end docking structure 2310.

[0027] In addition, the second moving mechanism 2600 of the second car unit does not adopt an AGV car, but adopts a flat structure with four universal wheels at the bottom. The second moving mechanism 2600 cannot be actively driven. The universal wheels 2610 provided at its bottom are used to cooperate with the power of the first car unit to move in all directions on the plane. At the same time, a locking device 2620 is also provided on the second moving mechanism 2600. The locking device 2620 can limit the movement of the universal wheels 2610 when stable lifting is required.

[0028] A specific working mode of this embodiment is as follows: First, as Figure 1 、 Figure 2As shown in , before starting the operation, a first carriage unit and three second carriage units are sequentially docked together, the first support head 520 of the first carriage unit is inserted into the slot 2410 of the second carriage unit, and the second support head 2520 of the second carriage unit is sequentially inserted into the slot 2410 of the next second carriage unit, and the first load-bearing end docking structure 310 of the first carriage unit is docked with the lifting end docking structure 2320 of the second carriage unit, and the second load-bearing end docking structure 2310 of the second carriage unit is sequentially docked with the lifting end docking structure 2320 of the next second carriage unit, so that each driving unit can be stably connected into a whole for movement; then, the designated position of each driving unit to be arranged is set by the PLC unit, and the entire assembly is started to work; after starting, the PLC unit is set to the moving mode, at this time, there is no synchronous braking between the different driving mechanisms of the first carriage unit and the three second carriage units, and the entire assembly is driven to move by the first moving mechanism 600 of the first carriage unit, and the moving route is set by the PLC unit. The vehicle assembly first moves to the position where the second vehicle unit at the front end needs to be arranged, and then the second driving mechanism of the second vehicle unit at the front end is controlled by the PLC unit to drive its second bearing mechanism to rise. At this time, the slot 2410 of the second vehicle unit at the front end will be disengaged from the second supporting head 2520 of the second vehicle unit behind, and the second bearing end docking structure 2310 and the lifting end docking structure 2320 between the two will also be separated, so that the second vehicle unit at the front end is separated from the driving control of the first vehicle unit and is arranged at the designated position; then, the previous step is repeated to arrange the positions of the remaining second vehicle units in sequence, and finally, the first vehicle unit is moved to its designated position alone; after each vehicle unit moves to the designated position next to the locomotive, the moving mechanism is locked by the locking device 2620 to prevent the universal wheel 2610 from rolling; then the PLC unit is set to the lifting mode, at this time, the different driving mechanisms of the first vehicle unit and the three second vehicle units are braked synchronously, and the locomotive is lifted from the four corners together under the synchronous control and adjustment of the PLC unit.

[0029] In this embodiment, the mobile car lifting machine assembly is configured by providing a bearing mechanism and a driving mechanism on the car lifting unit, and a support head and a slot 2410 are provided on the bearing mechanism. Relying on the cooperation between the slot 2410 and the support heads on each car lifting unit, the support heads on the car lifting units can be used to abut and lift the locomotive, and at the same time, they can be inserted to realize the linkage between multiple car lifting units. Cooperating with the moving mechanisms of each car lifting unit, multiple car lifting units can form an integral whole to move and be arranged together before being arranged. Therefore, with only one actively driven moving mechanism provided on the first car lifting unit, the movement and arrangement of multiple car lifting units can be controlled by the PLC unit, achieving efficient automated operation and improving the accuracy of the arrangement position of the car lifting units. This solves the problems in the prior art that the mobile car lifting machine requires multiple people to operate, manual alignment, which is time-consuming, with low alignment accuracy, laborious and inefficient, and there are also risks of instability and safety.

[0030] Meanwhile, in this embodiment, by providing a mutually cooperating first bearing end docking structure 310, a second bearing end docking structure 2310, and a lifting end docking structure 2320, during the process of the first car lifting unit driving the entire car lifting machine assembly, the movement states of each car lifting unit are mutually restricted, and the orientations and positions of the second car lifting units docked in the front can be kept stable and controllable. This avoids the deviation of the orientation and position of the second car lifting unit during arrangement, which reduces the safety and stability and brings unnecessary potential accident hazards.

[0031] Such as Figure 6 、 Figure 7As shown in the figure, the locking device 2620 in this embodiment mainly includes a slideway 2621, a telescopic block 2622 in the slideway 2621, a worm 2623 connected below the telescopic block 2622, and a worm gear 2624 arranged on the side of the universal wheel 2610, etc. Among them, the slideway 2621 is arranged in the steering connecting piece 2630 above the universal wheel 2610. The telescopic block 2622 is slidably embedded in the slideway 2621 and can slide horizontally in the slideway 2621. And, a spring 2625 is connected between the telescopic block 2622 and the inner wall of one end of the slideway 2621. A magnetic attraction device 2628 is arranged on the inner wall of the other end of the slideway 2621. The magnetic attraction device 2628 is signal-connected to the PLC unit, and the telescopic block 2622 is made of magnetic metal material. Therefore, the telescopic block 2622 can be adsorbed or released by the magnetic attraction device 2628. The lower end of the telescopic block 2622 is rotatably connected to the worm 2623 through an adjusting bearing 2626. The worm 2623 is vertically arranged and extends out from the linear chute 2627 below the slideway 2621. At the same time, the worm gear 2624 is fixedly arranged on the side of the universal wheel 2610, and the worm gear 2624 will rotate coaxially with the universal wheel 2610 when the universal wheel 2610 rotates. Before the second car-carrying mechanism moves to the designated position, the magnetic attraction device 2628 adsorbs the telescopic block 2622, so that the lower worm 2623 is far away from the universal wheel 2610 and does not contact the worm gear 2624. When the second car-carrying mechanism moves to the designated position, the PLC unit can be used to control the magnetic attraction device 2628 to adjust the magnetic force, release the telescopic block 2622. The telescopic block 2622 moves to the other side along the slideway 2621 under the action of the pulling force of the spring 2625, and at the same time drives the worm 2623 to move towards the universal wheel 2610, so that the worm 2623 abuts against the outer side of the worm gear 2624. At the same time, through the fine adjustment of the adjusting bearing 2626, the worm 2623 deflects to a certain extent, so as to mesh with the worm gear 2624. After the worm 2623 and the worm gear 2624 are meshed, since the rotation tendency of the worm gear 2624 cannot drive the worm 2623 to rotate, the rotation of the worm gear 2624 is restricted, and the locking of the universal wheel 2610 is completed. And, in one or more other embodiments, the locking device 2620 can also be applied to the AGV trolley of the first car-carrying unit to prevent the roller from moving when lifting.

[0032] In addition, an adjusting handwheel 340 is further provided between the two first clamping plates 300 in this embodiment. The rotating shaft of the adjusting handwheel 340 passes through the first clamping plates 300 on both sides and is rotatably connected to the first clamping plates 300 on both sides through bearings. The operating part of the adjusting handwheel 340 is arranged at one end of its rotating shaft and is used for manual adjustment when the equipment fails to avoid safety accidents. Moreover, at the bottom of the second inner connecting part 2400 in this embodiment, and at a position closer to the outside than the slot 2410, a shaft groove 2430 is provided. The shape of the shaft groove 2430 is adapted to the rotating shaft of the adjusting handwheel 340 and is used for accommodating the rotating shaft of the adjusting handwheel 340 when the two car lifting units are docked. At the same time, at the outer ends of the first outer connecting part 500 and the second outer connecting part 2500 in this embodiment, a first groove 501 and a second groove 2501 are respectively provided. The shapes of the first groove 501, the second groove 2501 and the lead screw 230 are adapted to prevent the first outer connecting part 500, the second outer connecting part 2500 and the lead screw 230 from touching each other and avoid affecting the transmission of the driving mechanism when the car lifting units are separated and combined.

[0033] Preferably, in this embodiment, the guide rail 122 is made of 45 steel material and is subjected to electric spark quenching treatment to ensure strength and improve wear resistance. The lead screw 230 is made of alloy steel material subjected to quenching and tempering treatment to improve the load-bearing capacity and self-locking performance. The nut 240 is made of tin bronze material to ensure wear resistance.

[0034] Embodiment 2 On the basis of the above first embodiment, a deformation method is proposed, and the second embodiment is provided below.

[0035] Please refer to Figure 8 , the mobile car lifting machine assembly in the second embodiment also mainly includes: a first car lifting unit, several second car lifting units, a PLC unit (not shown in the figure), etc.

[0036] As Figure 8As shown in the figure, the main difference between the second embodiment and the first embodiment lies in the structural change of the first carlifting unit. In the second embodiment, the main components of the first carlifting unit include: a first frame 100, a first driving mechanism provided on the first frame 100, a first bearing mechanism driven by the first driving mechanism, and a first moving mechanism 600 below the first frame 100, etc. Among them, the first frame 100, the first driving mechanism and the first moving mechanism 600 are substantially the same as those in the first embodiment, while the first bearing mechanism is provided with three extension parts 700 in addition to the first clamping plates 300 symmetrically arranged on both sides. One extension part 700 is arranged at one end of the two first clamping plates 300 close to the first frame 100. The extension part 700 mainly includes two extension plates 710, an arched extension frame 740 arranged between the two extension plates 710, and an upwardly convex extension head 720 arranged on the extension frame 740. The extension plates 710 and the extension frame 740 are fixedly connected by a connecting column passing through both of them, and the extension head 720 is also adapted to the slot 2410. The other two extension parts 700 are respectively arranged on the two outer side surfaces of the two first clamping plates 300. In order to prevent the connection between the other two extension parts 700 and the first clamping plates 300 from hindering the movement of the track wheels 330, in the second embodiment, the track wheels 330 are arranged at a position close to the top of the front sides of the two first clamping plates 300.

[0037] The second carlifting unit and the PLC unit of the second embodiment are substantially the same as those in the first embodiment. When the mobile carlifting machine assembly of the second embodiment is in use, before starting the operation, one first carlifting unit is docked with three second carlifting units at the same time. The three extension heads 720 (the first head 520 can also be used as a backup) of the first carlifting unit are respectively inserted into the slots 2410 of the three second carlifting units, so that each carlifting unit can be stably connected into a whole for movement; then, the designated positions where each carlifting unit needs to be arranged are set through the PLC unit, and the whole assembly is started to work; after starting, the first moving mechanism 600 of the first carlifting unit drives the whole assembly to move. First, it moves to the position where a second carlifting unit needs to be arranged. Then, the second driving mechanism of the second carlifting unit at the forefront is controlled by the PLC unit to drive its second bearing mechanism to rise. At this time, the slot 2410 of this second carlifting unit will disengage from the extension head 720 of the first carlifting unit, so that this second carlifting unit is disengaged from the driving control of the first carlifting unit and is arranged at the designated position; then, the above steps are repeated to arrange the positions of the remaining second carlifting units in turn; finally, the first carlifting unit moves to its designated position alone; after each carlifting unit moves to the designated position beside the locomotive, the moving mechanism is locked by the locking device 2620 to prevent rolling. Then, under the synchronous control and adjustment of the PLC unit, the locomotive is lifted together from the four corners.

[0038] In this embodiment, the mobile car lifting machine assembly is configured by providing a bearing mechanism and a driving mechanism on the second car lifting unit, and providing a slot 2410 on the second bearing mechanism. By relying on the cooperation between the slot 2410 and the extended support head on the first car lifting unit, the extended support head on the car lifting unit can be inserted to achieve the linkage between multiple car lifting units. Thus, multiple car lifting units can form an integral whole to move and be arranged together before being arranged. Therefore, with only one active driving mechanism provided on the first car lifting unit, the movement and arrangement of multiple car lifting units can be controlled by the PLC unit, achieving efficient automated operation and improving the accuracy of the arrangement position of the car lifting units. This solves the problems in the prior art that the mobile car lifting machine requires multiple people to operate, manual alignment, which takes a long time, has a low alignment accuracy, is laborious and inefficient, and has risks of stability and safety.

[0039] Embodiment 3 Based on the above second embodiment, a modified form is proposed, and the following provides the third embodiment.

[0040] Please refer to Figures 9 - 11 , the mobile car lifting machine assembly in the third embodiment also mainly includes: a first car lifting unit, several second car lifting units, and a PLC unit (not shown in the figure), etc.

[0041] Such as Figure 9 , Figure 10As shown in [description], the main difference between the third embodiment and the second embodiment lies in the structural change of the first car unit. In the third embodiment, the main components of the first car unit include: a first frame 100, a first drive mechanism provided on the first frame 100, a first load-bearing mechanism driven by the first drive mechanism, and a first moving mechanism 600 below the first frame 100, etc. Among them, the first frame 100, the first drive mechanism, and the first moving mechanism 600 are substantially the same as those in the second embodiment, while the first load-bearing mechanism is provided with a circular module slide 800 below the first clamping plates 300 symmetrically arranged on both sides, and three extension parts 700 are arranged on the circular module slide 800. The extension part 700 in the third embodiment also mainly includes two extension plates 710, an arched extension frame 740 arranged between the two extension plates 710, and an upwardly protruding extension head 720 arranged on the extension frame 740. Moreover, the extension plates 710 and the extension frame 740 are fixedly connected by connection columns passing through both of them, and the extension head 720 is also adapted to the slot 2410. However, the difference from the second embodiment is that between the two extension plates 710, and at one end close to the circular module slide 800, a slider 712 is provided. The slider 712 is fitted on the track of the circular module slide 800 through an arc-shaped chute 714 provided at its bottom, and can be driven by the circular module slide 800 to change the angle between each extension part 700 and the first external connection part, that is, the angle between each extension head 720 and the first head 520 on the track of the circular module slide 800. At the same time, the circular module slide 800 is also signal-connected to the PLC unit and works under the control of the PLC unit.

[0042] The second car-lifting unit and the PLC unit of the third embodiment are substantially the same as those in the second embodiment. When the mobile car-lifting machine assembly of the third embodiment is in use, before starting the operation, one first car-lifting unit is docked with three second car-lifting units at the same time. The three extended supporting heads 720 (the first supporting head 520 can also be used as a backup) of the first car-lifting unit are respectively inserted into the slots 2410 of the three second car-lifting units. At the same time, the slider 712 is moved through the annular module slide table 800 to adjust the position and orientation of each second car-lifting unit, so that each car-lifting unit can be stably connected into a whole for movement. Then, the designated positions where each car-lifting unit needs to be arranged are set through the PLC unit, and the whole assembly is started to work. After starting, the whole assembly is driven to move through the first moving mechanism 600 of the first car-lifting unit. First, it moves to the position where a second car-lifting unit needs to be arranged, and the slider 712 is moved through the annular module slide table 800 to adjust the position and orientation of each second car-lifting unit to adapt to the need of lifting the locomotive. Then, the second driving mechanism of the second car-lifting unit at the front end is controlled through the PLC unit to drive its second bearing mechanism to rise. At this time, the slot 2410 of this second car-lifting unit will be disengaged from the extended supporting head 720 of the first car-lifting unit, so that this second car-lifting unit is disengaged from the driving control of the first car-lifting unit and is arranged at the designated position. Then, the above steps are repeated to arrange the positions of the remaining second car-lifting units in turn. Finally, the first car-lifting unit moves to its designated position alone. After each car-lifting unit moves to the designated position beside the locomotive, the moving mechanism is locked through the locking device 2620 to prevent rolling. Then, under the synchronous control and adjustment of the PLC unit, the locomotive is lifted together from the four corners.

[0043] In this embodiment, the mobile car-lifting machine assembly is provided with a bearing mechanism and a driving mechanism on the second car-lifting unit, and a slot 2410 and an extended supporting head 720 are provided on the second bearing mechanism of the second car-lifting unit. Relying on the cooperation between the slot 2410 and the extended supporting head 720 on the first car-lifting unit, the extended supporting heads 720 on the car-lifting units can be inserted to realize the linkage between multiple car-lifting units, so that multiple car-lifting units can form a whole together for movement and arrangement before being arranged. Thus, under the condition of only setting one active driving moving mechanism on the first car-lifting unit, the movement and arrangement of multiple car-lifting units can be controlled through the PLC unit, realizing efficient automatic operation and improving the accuracy of the arranged position of the car-lifting units, and solving the problems in the prior art that the mobile car-lifting machine requires multiple people to operate, manual alignment, takes a long time, has a low alignment accuracy, is laborious and inefficient, and has risks of stability and safety.

[0044] Meanwhile, in this embodiment, a ring module slide table 800 is further provided. By cooperating the ring module slide table 800 with the slider 712 on the extension part 700, the orientation of each extension part 700 can be adjusted, which is more conducive to the PLC unit accurately controlling the positions and placement states of each second car lifting unit. Moreover, during the movement of the car lifting machine assembly, the orientation of the extension part 700 can also be adjusted through the ring module slide table 800, thereby improving the convenience of the operation of the car lifting machine assembly.

[0045] Embodiment 4 In the above embodiment, in order to prevent the rollers and the casters 2610 of the moving mechanism from moving during lifting, it is mainly achieved by setting a locking device 2620. On the basis of the first embodiment, in this embodiment, the locking device 2620 is not provided, but another method is adopted to achieve the effect of preventing the rollers and the casters 2610 from moving during lifting. The following provides the fourth embodiment.

[0046] Please refer to Figure 12 , a lifting device 2640 is provided on the second moving mechanism 2600 in the fourth embodiment.

[0047] As Figure 12 shown in, the lifting device 2640 is mainly provided above the steering connecting member 2630 of the caster 2610. The lifting device 2640 mainly includes a housing 2641 and a nut socket 2644 embedded therein, etc. The housing 2641 is arranged at the positions near the four corners on the side of the flat plate part 2650 of the flat plate structure of the second moving mechanism 2600. The interior of the housing 2641 is hollow and the bottom is open. A lifting motor 2642 is arranged at the outer top of the housing 2641. The lifting motor 2642 is signal-connected to the PLC unit, and the output end of the lifting motor 2642 is downwardly connected with a screw rod 2643. Furthermore, the upper part of the screw rod 2643 is rotatably arranged on the housing 2641 through a bearing, and the lower part of the screw rod 2643 is threadedly connected with the internal thread of the nut socket 2644. At the same time, the lower end of the nut socket 2644 is connected to the steering connecting member 2630, and the caster 2610 below can be driven to move together through the steering connecting member 2630. When in use, before the second car lifting mechanism moves to the designated position, the caster 2610 extends out of the housing 2641 and can roll on the ground; when the second car lifting mechanism moves to the designated position, the PLC unit can be used to control the lifting motor 2642 to work, driving the caster 2610 to be lifted, so that the caster 2610 is received into the housing 2641, and then the bottom of the housing 2641 and the flat plate part 2650 are in contact with the ground, thereby avoiding the movement of the second car lifting mechanism during lifting.

[0048] In this embodiment, the mobile car lift assembly fixes the second moving mechanism 2600 through the lifting device 2640, so that the entire universal wheel 2610 can be lifted off the ground during fixation, thereby eliminating the influence of the rolling characteristics of the universal wheel 2610 on the stability of the car lift unit, and achieving a balance and consideration between the mobility and use safety of the car lift assembly.

[0049] The above are only embodiments of the present invention, and common knowledge such as specific structures and characteristics known in the art are not described in detail herein. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners described in the specification can be used to interpret the content of the claims.

Claims

1. A mobile vehicle lifting machine assembly, characterized in that: Include: A first carriage unit, on which a first driving mechanism and a first bearing mechanism are arranged, wherein the first driving mechanism can drive the first bearing mechanism to rise and fall, and the first carriage unit is provided with a first moving mechanism (600); A plurality of second carriage units, on which a second driving mechanism and a second carrying mechanism are arranged, the second driving mechanism can drive the second carrying mechanism to rise and fall, the second carrying mechanism is provided with a slot (2410); and the second carriage unit is provided with a second moving mechanism (2600); and a PLC unit, which is signal-connected to the first driving mechanism, the first moving mechanism (600) and the second driving mechanism; Wherein, the first carrying mechanism and the second carrying mechanism are both provided with a supporting head, and the supporting head and the slot (2410) can be plugged in or separated by the first driving mechanism or the second driving mechanism; when the supporting head is plugged in the slot (2410), the PLC unit controls the first moving mechanism (600) of the first carriage unit to move and can synchronously drive the second moving mechanisms (2600) of the plurality of second carriage units to move.

2. The mobile vehicle lifting machine assembly according to claim 1, characterized in that: The first carriage unit comprises a first frame (100), the first driving mechanism is arranged on a top plate (110) of the first frame (100), the first bearing mechanism is arranged between two supporting plates (120) of the first frame (100), and the first moving mechanism (600) is arranged on a bottom plate (130) of the first frame (100).

3. The mobile vehicle lifting machine assembly according to claim 2, characterized in that: The first driving mechanism comprises a servo motor (210) and a reducer (220) that cooperate with each other. The servo motor (210) and the reducer (220) are both arranged above the top plate (110). The output end of the reducer (220) is connected to a lead screw (230). The lead screw (230) is threadedly connected to a nut (240). The nut (240) is connected to the first bearing mechanism, so that when the servo motor (210) rotates, it can drive the first bearing mechanism to move up and down between the two support plates (120).

4. The mobile vehicle lifting machine assembly according to claim 2, characterized in that: First clamping plates (300) are provided on both sides of the first bearing mechanism, and the two first clamping plates (300) are respectively arranged close to the support plates (120) on both sides.

5. The mobile vehicle lifting machine assembly according to claim 4, characterized in that: At least two groups of track wheels (330) are rotatably arranged on the two first clamping plates (300), and vertical guide rails (122) are arranged on both sides of the two support plates (120); and at least two groups of the track wheels (330) are respectively embedded in the guide rails (122) on both sides of the support plates (120), and the track wheels (330) can move up and down along the guide rails (122).

6. The mobile vehicle lifting machine assembly according to claim 4, characterized in that: The first clamping plate (300) has a first load-bearing end docking structure (310) at one end close to the supporting head on the first load-bearing mechanism; the second carriage unit has a second frame (2100), second clamping plates (2300) are arranged on both sides of the second load-bearing mechanism, and the second clamping plate (2300) has a lifting end docking structure (2320) at one end close to the second frame (2100); the first load-bearing end docking structure (310) and the lifting end docking structure (2320) can be docked.

7. The mobile vehicle lifting machine assembly according to claim 6, characterized in that: One end of the second clamping plate (2300) close to the supporting head on the second bearing mechanism has a second bearing end docking structure (2310); the second bearing end docking structure (2310) and the lifting end docking structure (2320) can be docked.

8. The mobile vehicle lifting machine assembly according to claim 1, characterized in that: The first supporting mechanism is provided with a plurality of extension parts (700), the support head comprises a first support head (520) and an extension support head (720) provided on the extension part (700), and the extension support head (720) can be plugged into or separated from the slot (2410) through a first driving mechanism or a second driving mechanism; an annular module slide (800) is provided on the first supporting mechanism, the extension part (700) is slidably connected to the annular module slide (800) through a slider (712), and can be driven by the annular module slide (800) to change the angle between the extension support head (720) and the first support head (520) on the track of the annular module slide (800).

9. The mobile vehicle lifting machine assembly according to any one of claims 1 to 8, characterized in that: The first moving mechanism (600) and / or the second moving mechanism (2600) are provided with a universal wheel (2610) and a locking device (2620); the locking device (2620) comprises a slideway (2621) arranged in a steering connector (2630) above the universal wheel (2610); a magnetic attraction device (2628) is arranged at one end of the slideway (2621), and a spring (2625) is arranged at the other end; the spring (2625) The telescopic block (2622) is connected to the slideway (2621), a worm (2623) is connected below the telescopic block (2622), and a worm wheel (2624) is arranged on the side of the universal wheel (2610). When the PLC unit controls the magnetic attraction device (2628) to release the telescopic block (2622), the worm (2623) can abut against the worm wheel (2624) to lock the universal wheel (2610).

10. The mobile vehicle lifting machine assembly according to any one of claims 1 to 8, characterized in that: A lifting device (2640) is provided on the first moving mechanism (600) and / or the second moving mechanism (2600), and the lifting device (2640) comprises a shell (2641), and a lifting motor (2642) is provided above the shell (2641), and the output end of the lifting motor (2642) is connected to a screw rod (2643), and a nut holder (2644) is embedded in the shell (2641), and the nut holder (2644) is threadedly connected to the screw rod (2643), and a universal wheel (2610) is connected below the nut holder (2644); the lifting motor (2642) can drive the universal wheel (2610) to rise or fall, so as to extend out of or retract into the shell (2641).

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