Multi-storey non-avoidance stereo parking garage

Abstract

The present invention discloses a multi-layer non-avoidance type three-dimensional parking garage, comprising a garage body, a transverse platform and a lifting device: the garage body is provided with at least two parking layers in the height direction; the transverse platform is arranged on one side of the garage body, comprising a transverse base frame, an intermediate frame and a vehicle loading plate which are arranged in sequence from bottom to top, a first transverse mechanism is arranged between the transverse base frame and the intermediate frame; a second transverse mechanism is arranged between the intermediate frame and the vehicle loading plate; a guide portion is arranged on one or both longitudinal sides of the transverse base frame; a locking mechanism is arranged on the garage body; two sets of lifting devices are arranged and are respectively connected to both longitudinal sides of the transverse platform; the scheme of the present invention can greatly improve the space utilization rate of old urban communities and urban roads, reduce the cost of reconstruction or production and manufacturing, and at the same time, when parking and taking out vehicles, there is no obstruction or interference with the driving of vehicles outside the garage, no avoidance is required, it is convenient for users to park and take out vehicles, and the social and economic effects are good.

Description

Technical Field

[0001] The invention relates to a three-dimensional parking garage, in particular to a multi-layer non-avoidance type three-dimensional parking garage. Background Art

[0002] At present, the mechanical three-dimensional parking equipment on the market mainly includes lifting and lateral movement, vertical circulation, horizontal circulation, multi-layer circulation, lane stacking and vertical lifting. Although this type of equipment has the advantages of large capacity, small unit vehicle footprint and high land utilization rate, due to the large overall footprint (generally more than 200 square meters), it requires high manufacturing and land costs to build three-dimensional parking equipment in the built-up urban center and old residential areas where every inch of land is valuable; secondly, this type of parking device also has the disadvantages of long vehicle storage and retrieval time, high construction difficulty, high failure rate and failure impact rate, which limits the applicability of the device. For parking environments such as old residential areas and roadside in large and medium-sized cities, there are mainly two types of simple lifting parking equipment and rotating lifting non-avoidance parking equipment. However, the disadvantage of "parking and taking upper-level vehicles, the lower-level vehicles must be moved first" seriously reduces the applicability of the device or can only be designed to two floors, resulting in low parking flexibility and space utilization. Summary of the invention

[0003] In view of this, in order to overcome the shortcomings of poor practicability and low space utilization of parking equipment in old residential areas and urban roadsides, while further reducing costs and facilitating installation and maintenance, the present invention designs a multi-layer non-avoidance three-dimensional parking device.

[0004] The multi-layer non-avoidance type three-dimensional parking garage of the present invention comprises:

[0005] The garage body is provided with at least two parking floors in the height direction;

[0006] The traverse platform is arranged on one side of the garage body, and comprises a traverse base frame, an intermediate frame and a vehicle loading plate for carrying the vehicle to be parked, which are arranged in sequence from bottom to top; a first traverse mechanism for driving the intermediate frame to move back and forth transversely is arranged between the traverse base frame and the intermediate frame; a second traverse mechanism for driving the vehicle loading plate to move back and forth transversely is arranged between the intermediate frame and the vehicle loading plate; a guide part for guiding the parked vehicle to drive to the vehicle loading plate is arranged on one or both longitudinal sides of the traverse base frame; a locking mechanism for locking the vehicle loading plate moved to the parking layer is arranged on the garage body;

[0007] The lifting device is provided in two sets and is respectively connected to the longitudinal sides of the transverse moving platform, and is used to drive the transverse moving platform to perform reciprocating lifting motion in the vertical direction.

[0008] Furthermore, the first transverse movement mechanism includes a first transverse movement motor fixed on the transverse movement base frame, a screw driven to rotate by the first transverse movement motor, and a nut fixed on the intermediate frame and cooperating with the screw; the transverse movement base frame is provided with a first transverse movement guide rail on both sides of the first transverse movement motor, and the intermediate frame is provided with a first transverse movement rail groove cooperating with the first transverse movement guide rail for guidance.

[0009] Furthermore, the second transverse movement mechanism includes two second transverse movement motors symmetrically fixed on the intermediate frame, transverse movement gears driven to rotate by the corresponding second transverse movement motors, and transverse movement racks fixed on the vehicle carrier plate and coordinated with the corresponding transverse movement gears; a second transverse movement guide rail is provided on the intermediate frame on the outer side of the second transverse movement motor, and a transverse movement guide wheel is provided on the vehicle carrier plate and coordinated with the second transverse movement guide rail for guidance.

[0010] Furthermore, each of the parking floors is provided with a third transverse guide rail that cooperates with the transverse guide wheel for guidance; the locking mechanism includes a clamp with two clamping arms, a scissor-type linkage group for driving the clamping arms and a push-pull electromagnet I for providing power to the scissor-type linkage group, and the two clamping arms move synchronously inward to clamp the transverse guide wheel or move synchronously outward to release the transverse guide wheel under the transmission of the scissor-type linkage group.

[0011] Furthermore, the garage body is constructed with steel sections, the parking floors are square frame structures, and each parking floor is connected by vertical columns.

[0012] Furthermore, the lifting device includes a lifting motor, a reducer I, a driving sprocket, a driven sprocket and a transmission chain. The output end of the lifting motor is connected to the input end of the reducer I, and the output end of the reducer I is connected to the driving sprocket. The driven sprocket is arranged directly below the driving sprocket and is connected to the driving sprocket through the transmission chain; a connecting box for connecting to the transverse platform is fixed on one side of the transmission chain, and the connecting box performs reciprocating lifting and lowering motion in the vertical direction as the transmission chain runs.

[0013] Furthermore, a lifting guide rail and a reinforcing plate arranged in parallel with the lifting guide rail are fixed between the mounting seat I of the driving sprocket and the mounting seat II of the driven sprocket, and a lifting slider which is sleeved outside the lifting guide rail and can move along the lifting guide rail is provided in the box body of the connecting box.

[0014] Furthermore, the reinforcement plate is a channel steel structure.

[0015] Furthermore, the connecting box is provided with a flipping mechanism for driving the transverse platform to flip; the flipping mechanism includes a flipping motor, a reducer II and a worm gear transmission assembly arranged in the box body of the connecting box, the output end of the flipping motor is connected to the input end of the reducer II, and the output end of the reducer II is connected to the transverse platform through the worm gear transmission assembly.

[0016] Furthermore, an anti-falling mechanism is provided in the connection box; the anti-falling mechanism includes a friction block and a push-pull electromagnet II, and the friction block is placed in a space formed by a lifting slider, a push-pull electromagnet II, an inner wall of the box, a lifting guide rail, a left fixed block and a right fixed block. When the push-pull electromagnet II is energized, it pushes the friction block to rise, and during the rising process, the friction block gradually contacts the lifting guide rail and generates a friction braking force.

[0017] Beneficial effects of the present invention:

[0018] The present invention is a multi-layer non-avoidance parking mechanical device that can intelligently complete parking and unloading of vehicles. It is aimed at the renovation of old residential areas, old-style flat garages and the construction of parking equipment on urban roadsides, and effectively solves the problem of difficult parking. Compared with the prior art, the present invention has the following advantages: (1) It breaks the limitation that the non-avoidance three-dimensional garage has only two floors. According to actual needs, the garage body can be designed as two-story, three-story or even more stories, and the space utilization rate is relatively high; (2) Compared with the simple lifting three-dimensional garage, the present invention solves the limitation that the lower-level vehicles must be moved when parking and unloading the upper-level vehicles, optimizes the parking and unloading methods, and shortens the parking and unloading time; (3) The present invention has module separation, and the main storage The location for parking the car does not have a complex mechanical structure, and the construction cost and difficulty are low. In addition, the risk of failure is low, and maintenance is relatively convenient. (4) Compared with the single-cantilever rotating and lifting non-avoidance parking equipment on the market, the present invention adopts a double-cantilever type, which has a more stable structure and can withstand larger wind loads. (5) The present invention is a non-avoidance design. When parking or retrieving a vehicle, it will not cause improper interference or obstruction to vehicles passing by the periphery of the garage. It is a completely non-avoidance parking garage. (6) The present invention has a simple structure, low cost, diverse functions, and strong applicability. (7) The normally placed car loading board can be used as a billboard, which has the effect of one object with multiple uses and is in line with the construction concept of modern cities. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a front view of the transverse base frame of the present invention;

[0022] Figure 3 It is a left side view of the transverse base frame of the present invention;

[0023] Figure 4 It is a front view of the intermediate frame of the present invention;

[0024] Figure 5 It is a left side view of the intermediate frame of the present invention;

[0025] Figure 6It is a front view of the vehicle loading plate of the present invention;

[0026] Figure 7 It is a left side view of the vehicle loading plate of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the locking mechanism of the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the lifting device of the present invention;

[0029] Fig.10 It is a front view of the connection box of the present invention;

[0030] Fig.11 It is a left side view of the connection box of the present invention;

[0031] Fig.12 It is a top view of the connection box of the present invention. DETAILED DESCRIPTION

[0032] like Figures 1 to 12 As shown: the multi-layer non-avoidance stereoscopic parking garage of this embodiment includes a garage body 1, a traverse platform 2 and a lifting device 3. Among them, the garage body 1 is provided with at least two parking layers 4 along the height direction, and each parking layer 4 has similar or identical structure and size, and can be accumulated upward with each parking space as a unit. The specific number of parking layers 4 can be set according to needs. Figure 1 Two layers are shown, but in fact the number may be other; the garage body 1 is preferably constructed of steel sections (such as H-section steel) for ease of manufacturing and forming and high structural strength; the parking layer 4 is a square frame structure, and each parking layer 4 is connected by vertical columns 5, and a top plate is connected to the top of the columns 5.

[0033] The transverse platform 2 is arranged on one side of the garage body 1, and includes a transverse base frame 6, an intermediate frame 7 and a vehicle loading plate 8 for carrying the vehicle to be parked, which are arranged in sequence from bottom to top. A first transverse mechanism for driving the intermediate frame 7 to move back and forth laterally is provided between the transverse base frame 6 and the intermediate frame 7; a second transverse mechanism for driving the vehicle loading plate 8 to move back and forth laterally is provided between the intermediate frame 7 and the vehicle loading plate 8; guide parts 9 for guiding the parked vehicle to the vehicle loading plate 8 are provided on both longitudinal sides of the transverse base frame 6 (of course, it can also be provided on only one side); a locking mechanism for locking the vehicle loading plate 8 moved to the parking layer 4 is provided on the garage body 1; "transverse movement" refers to moving between the parking layer 4 and the transverse platform 2, and Figure 1The middle direction refers to the left and right direction, and when the transverse platform 2 is a rectangular frame structure, it is its width direction; the transverse base frame 6 is the base of the transverse platform 2, and mainly plays a bearing role in the lifting process; the middle frame 7 is a pre-moving layer, which is used to realize the short-distance lateral movement of the vehicle loading plate 8; the vehicle loading plate 8 is a carrier for storing and retrieving vehicles, and completes the position exchange of the vehicle between the parking layer 4 and the transverse platform 2; the vehicle loading plate 8 can be moved from the transverse platform 2 to the parking layer 4 or from the parking layer 4 to the transverse platform 2 under the action of the first transverse mechanism and the second transverse mechanism. When parking or picking up the car, the car only needs to be positioned on the car loading plate 8, which is easy to operate; the guide part 9 can, for example, be a guide seat with a slope structure to facilitate the entry of the car.

[0034] Two sets of lifting devices 3 are provided and are respectively connected to the longitudinal sides of the transverse platform 2 to drive the transverse platform 2 to perform reciprocating lifting motion in the vertical direction; the two sets of lifting devices 3 are symmetrically arranged and move synchronously, thereby ensuring the stable lifting of the transverse platform 2.

[0035] In this embodiment, the first transverse movement mechanism includes a first transverse movement motor 10 fixed on the transverse movement base frame 6, a lead screw 11 driven to rotate by the first transverse movement motor 10, and a nut 12 fixed on the intermediate frame 7 and matched with the lead screw 11; the transverse movement base frame 6 is provided with a first transverse movement guide rail 13 on both sides of the first transverse movement motor 10, and the intermediate frame 7 is provided with a first transverse movement rail groove 14 matched with the first transverse movement guide rail 13 for guidance; the first transverse movement motor 10 is arranged in the middle of the transverse movement base frame 6 and its output shaft faces the garage body 1, and the lead screw 11 is fixed on the intermediate frame 7. The nut 12 is fixed at the bottom of the intermediate frame 7. When the first transverse movement motor 10 is in action, it drives the lead screw 11 to rotate. The rotation of the lead screw 11 drives the nut 12 matched with it to make a linear reciprocating motion, thereby driving the intermediate frame 7 to move back and forth laterally; the first transverse movement guide rail 13 has a dovetail block structure, and the first transverse movement rail groove 14 has a dovetail groove structure. The two cooperate to guide the movement of the intermediate frame 7, so that the intermediate frame 7 moves smoothly and prevents deviation; the first transverse movement motor 10 can rotate forward or reverse, thereby adjusting the movement state of the intermediate frame 7.

[0036] In this embodiment, the second transverse mechanism includes two second transverse motors 15 symmetrically fixed on the intermediate frame 7, transverse gears 16 driven to rotate by the corresponding second transverse motors 15, and transverse racks 17 fixed on the vehicle loading plate 8 and cooperating with the corresponding transverse gears 16; a second transverse guide rail 18 is provided on the intermediate frame 7 on the outer side of the second transverse motor 15, and a transverse guide wheel 19 cooperating with the second transverse guide rail 18 for guidance is provided on the vehicle loading plate 8; the second transverse motor 15 can drive the transverse gear 16 to rotate by chain transmission, belt transmission, etc., and the transverse rack 17 is arranged at the bottom of the vehicle loading plate 8, and the transverse gear 16 and the transverse rack 17 can be meshed and transmitted, thereby driving the vehicle loading plate 8 to perform linear reciprocating motion; the second transverse motor 15 can rotate forward or reverse, thereby adjusting the movement state of the vehicle loading plate 8; the second transverse guide rail 18 has a "U"-shaped long groove, and the transverse guide wheel 19 moves in the "U"-shaped long groove to maintain the movement direction and effectively prevent deviation.

[0037] In this embodiment, each of the parking layers 4 is provided with a third transverse guide rail (not shown in the figure) that cooperates with the transverse guide wheel 19 for guidance; the locking mechanism includes a clamp 21 with two clamp arms 20, a scissor-type linkage group 22 for driving the clamp arms 20, and a push-pull electromagnet I 23 for providing power to the scissor-type linkage group 22. The two clamp arms 20 move synchronously inwardly under the transmission of the scissor-type linkage group 22 to clamp the transverse guide wheel 19 or move synchronously outwardly to release the transverse guide wheel 19; the structure of the third transverse guide rail can be the same as that of the second transverse guide rail 18; the locking mechanism is arranged on the third transverse guide rail away from the transverse guide wheel. One end of the moving platform 2; the front ends of the two clamping arms 20 are each provided with a triangular limit head 24, and the rear ends are hinged to each other; the scissor-type linkage group 22 includes a plurality of connecting rods, as long as it can transmit the force of the push-pull electromagnet Ⅰ23; when the vehicle-carrying plate 8 is completely moved to the parking layer 4, the clamping arm 20 moves synchronously inward under the transmission of the scissor-type linkage group 22 to clamp the transverse guide wheel 19, thereby locking the vehicle-carrying plate 8 to prevent it from improper movement; when the vehicle-carrying plate 8 needs to leave the parking layer 4 during the vehicle-picking operation, the clamping arm 20 moves synchronously outward under the transmission of the scissor-type linkage group 22 to release the transverse guide wheel 19, thereby releasing the lock.

[0038] In this embodiment, the lifting device 3 includes a lifting motor 25, a reducer I 26, a driving sprocket 27, a driven sprocket 28 and a transmission chain 29, the output end of the lifting motor 25 is connected to the input end of the reducer I 26, the output end of the reducer I 26 is connected to the driving sprocket 27, the driven sprocket 28 is arranged directly below the driving sprocket 27 and is connected to the driving sprocket 27 through the transmission chain 29; a connecting box 30 for connecting the transverse platform 2 is fixed on one side of the transmission chain 29, and the connecting box 30 performs reciprocating lifting and lowering motions in the vertical direction with the operation of the transmission chain 29; the lifting motor 25 can be a stepping motor structure; the reducer I 26 can be a planetary reducer structure; the lifting motor 25, the reducer I 26 and the driving sprocket 27 can all be arranged on the top of the garage body 1; the chain drive method can overcome the heavy load required for lifting, the large transmission span and the relatively harsh working environment; an "L"-shaped auxiliary plate is provided at a part of the transmission chain 29, which is fixedly connected to the connecting box 30 through the auxiliary plate.

[0039] In this embodiment, a lifting guide rail 33 and a reinforcing plate 34 arranged in parallel with the lifting guide rail 33 are fixed between the mounting seat Ⅰ31 of the driving sprocket 27 and the mounting seat Ⅱ32 of the driven sprocket 28. A lifting slider 34 is provided in the box body 30a of the connecting box 30, which is sleeved outside the lifting guide rail 33 and can move along the lifting guide rail 33; the mounting seat Ⅰ31 and the mounting seat Ⅱ32 are respectively fixed at the longitudinal ends of the garage body 1; the lifting guide rail 33 is preferably an SBR guide rail, which can overcome a large overturning moment; the lifting slider 34 is provided with a vertical through hole 35, and the lifting guide rail 33 cooperates with the through hole 35 to achieve guidance and support; the reinforcing plate 34 can effectively reduce the axial pressure and axial deformation of the lifting guide rail 33; the reinforcing plate 34 is preferably a channel steel structure, which has high structural strength and plays a sufficient reinforcing role.

[0040] In this embodiment, the connecting box 30 is provided with a flipping mechanism for driving the transverse platform 2 to flip; the flipping mechanism includes a flipping motor 36, a reducer II 37 and a worm gear transmission assembly 38 arranged in the box body 30a of the connecting box 30, the output end of the flipping motor 36 is connected to the input end of the reducer II 37, and the output end of the reducer II 37 is connected to the transverse platform 2 through the worm gear transmission assembly 38; under the action of the flipping mechanism, the transverse platform 2 can move from a direction parallel to the garage body 1 to a direction perpendicular to the garage body 1 or vice versa; the flipping motor 36 can be a stepping motor structure; the reducer II 37 can be a planetary reducer structure; the flipping mechanism adopts a worm gear transmission, so that the device has a certain self-locking ability and can withstand a large load; because the flipping mechanism needs to lift the vehicle after flipping to the horizontal, a limit pin is used to limit the position to enhance the strength and reliability of the device; the box body 30a of the connecting box 30 is provided with a cavity specifically for installing the flipping mechanism.

[0041] In this embodiment, the connection box 30 is provided with an anti-falling mechanism; the anti-falling mechanism includes a friction block 39 and a push-pull electromagnet II 40, the friction block 39 is placed in a space formed by the lifting slider 34, the push-pull electromagnet II 40, the inner wall of the box body 30a, the lifting guide rail 33, the left fixed block 41 and the right fixed block 42, the push-pull electromagnet II 40 pushes the friction block 39 to rise after being energized, and the friction block 39 gradually contacts the lifting guide rail 33 during the rising process and generates a friction braking force; the friction block 39 is arranged below the lifting slider 34 and above the push-pull electromagnet II 40, and the push-pull electromagnet II 40 The push rod of Ⅱ40 is opposite to the friction block 39 but is not fixedly connected; the left fixed block 41 and the right fixed block 42 are screwed on the inner wall of the box body 30a, and a guide channel for the friction block 39 is formed between the left fixed block 41 and the right fixed block 42; the inner wall surface of the box body 30a has a slope structure (specifically, it can be formed by the slope block 43), so that the gap between the friction block 39 and the lifting guide rail 33 gradually decreases in the rising structure, and the friction block 39 generates a friction braking force after contacting the lifting guide rail 33, so that the lifting slider 34 is locked to prevent the vehicle carrier plate 8 from falling; the push-pull electromagnet Ⅱ40 is generally started when the transmission chain 29 breaks.

[0042] Of course, the parking garage is also equipped with a related control system, which includes a number of sensors and controllers, which can realize the sequential start-up, position control and remote communication of each mechanism, thereby meeting the needs of automatic operation; this structure can be realized through existing technology and will not be repeated here.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A multi-storey non-avoidance type three-dimensional parking garage, characterized in that: include: The garage body is provided with at least two parking floors in the height direction; The traverse platform is arranged on one side of the garage body, and comprises a traverse base frame, an intermediate frame and a vehicle loading plate for carrying the vehicle to be parked, which are arranged in sequence from bottom to top; a first traverse mechanism for driving the intermediate frame to move back and forth transversely is arranged between the traverse base frame and the intermediate frame; a second traverse mechanism for driving the vehicle loading plate to move back and forth transversely is arranged between the intermediate frame and the vehicle loading plate; a guide part for guiding the parked vehicle to drive to the vehicle loading plate is arranged on one or both longitudinal sides of the traverse base frame; a locking mechanism for locking the vehicle loading plate moved to the parking layer is arranged on the garage body; Two lifting devices are provided and are respectively connected to the longitudinal sides of the transverse moving platform, and are used to drive the transverse moving platform to perform reciprocating lifting and lowering motion in the vertical direction; The first transverse movement mechanism comprises a first transverse movement motor fixed on the transverse movement base frame, a lead screw driven to rotate by the first transverse movement motor, and a nut fixed on the intermediate frame and matched with the lead screw; the transverse movement base frame is provided with first transverse movement guide rails on both sides of the first transverse movement motor, and the intermediate frame is provided with a first transverse movement rail groove matched with the first transverse movement guide rail for guidance; The second transverse movement mechanism comprises two second transverse movement motors symmetrically fixed on the intermediate frame, transverse movement gears driven to rotate by the corresponding second transverse movement motors, and transverse movement racks fixed on the vehicle carrier plate and matched with the corresponding transverse movement gears; a second transverse movement guide rail is provided on the intermediate frame at the outer side of the second transverse movement motor, and a transverse movement guide wheel matched with the second transverse movement guide rail is provided on the vehicle carrier plate; Each of the parking floors is provided with a third transverse guide rail that cooperates with the transverse guide wheel for guidance; the locking mechanism includes a clamp with two clamp arms, a scissor-type linkage group for driving the clamp arms, and a push-pull electromagnet I for providing power to the scissor-type linkage group, and the two clamp arms move synchronously inwards under the drive of the scissor-type linkage group to clamp the transverse guide wheel or move synchronously outwards to release the transverse guide wheel; The lifting device includes a lifting motor, a reducer I, a driving sprocket, a driven sprocket and a transmission chain. The output end of the lifting motor is connected to the input end of the reducer I, and the output end of the reducer I is connected to the driving sprocket. The driven sprocket is arranged directly below the driving sprocket and is connected to the driving sprocket through the transmission chain. A connection box for connecting the transverse platform is fixed on one side of the transmission chain, and the connection box performs reciprocating lifting and lowering motion in the vertical direction with the operation of the transmission chain. The connecting box is provided with a flipping mechanism for driving the transverse platform to flip; the flipping mechanism includes a flipping motor, a reducer II and a worm gear transmission assembly arranged in the box body of the connecting box, the output end of the flipping motor is connected to the input end of the reducer II, and the output end of the reducer II is connected to the transverse platform through the worm gear transmission assembly.

2. The multi-storey non-avoidance type parking garage according to claim 1 is characterized in that: The garage body is constructed with steel sections, the parking floors are square frame structures, and each parking floor is connected by vertical columns.

3. The multi-storey non-avoidance type three-dimensional parking garage according to claim 1 is characterized in that: A lifting guide rail and a reinforcing plate arranged in parallel with the lifting guide rail are fixed between the mounting seat I of the driving sprocket and the mounting seat II of the driven sprocket. A lifting slider which is sleeved outside the lifting guide rail and can move along the lifting guide rail is arranged in the box body of the connecting box.

4. The multi-storey non-avoidance type three-dimensional parking garage according to claim 3 is characterized in that: The reinforcing plate is a channel steel structure.

5. The multi-storey non-avoidance type three-dimensional parking garage according to claim 3 is characterized in that: The connection box is provided with an anti-falling mechanism; the anti-falling mechanism includes a friction block and a push-pull electromagnet II, the friction block is placed in a space formed by a lifting slider, a push-pull electromagnet II, an inner wall of the box, a lifting guide rail, a left fixed block and a right fixed block, and the push-pull electromagnet II pushes the friction block to rise after being energized, and during the rising process, the friction block gradually contacts the lifting guide rail and generates a friction braking force.

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