阅读说明：本技术 一种具有物料输送功能地升降梯 (Elevator with material conveying function ) 是由 林文苹 于 2019-12-12 设计创作，主要内容包括：本发明公开了一种具有物料输送功能地升降梯,包括底座,所述底座内左端设有开口向左的升降腔,所述底座内右端设有开口向右的输送腔,所述底座上端设有传动腔,所述传动腔内设有为装置提供动力的传动机构,所述升降腔内设有具有升降功能的升降机构,所述输送腔内设有向上输送物料的输送机构,工作时可根据人工作业高度的需求将人升降至不同的高度,在升降至指定位置后,会将升降台进行锁定,以保证作业工人的安全,还可以为高处作业的工人输送物品,降低了向高处运输物品的难度。(The invention discloses an elevator with a material conveying function, which comprises a base, wherein a lifting cavity with a leftward opening is arranged at the left end in the base, a conveying cavity with a rightward opening is arranged at the right end in the base, a transmission cavity is arranged at the upper end of the base, a transmission mechanism for providing power for a device is arranged in the transmission cavity, a lifting mechanism with a lifting function is arranged in the lifting cavity, and a conveying mechanism for conveying materials upwards is arranged in the conveying cavity.)

1. The utility model provides an elevator with material is carried function, includes the base, its characterized in that: a lifting cavity with a leftward opening is arranged at the left end in the base, a conveying cavity with a rightward opening is arranged at the right end in the base, a transmission cavity is arranged at the upper end of the base, a transmission mechanism for providing power for the device is arranged in the transmission cavity, a lifting mechanism with a lifting function is arranged in the lifting cavity, and a conveying mechanism for conveying materials upwards is arranged in the conveying cavity;

the lifting mechanism comprises two clapboards fixed at the front end and the rear end of the upper end face of the base, first driven cavities are arranged in the two clapboards, threaded sleeves with lower ends extending into the lifting cavities are arranged on the upper cavity walls of the two driven cavities in a rotating manner, first driven belt wheels positioned in the lifting cavities are arranged at the lower ends of the threaded sleeves, first belts are connected to the first driven belt wheels, a movement cavity with a leftward opening is arranged on the right cavity wall of the lifting cavity, a movement block capable of sliding up and down in the movement cavity is arranged in the movement cavity, a support plate positioned in the lifting cavity is fixedly arranged on the left end face of the movement block, screw rods with upper ends in threaded connection with the two threaded sleeves are fixedly arranged on the upper end face of the support plate, an opening cavity with a leftward opening is arranged on the right cavity wall of the movement cavity, and a displacement block capable of sliding left and right in the opening, the fixed elasticity spring that is equipped with two left ends of displacement piece right-hand member face and opening chamber right side chamber wall is connected, the first stay cord of displacement piece right-hand member face fixedly connected with, be equipped with the dog chamber that the several opening distributes left and equidistance in the displacement piece, the dog intracavity is equipped with the dog chamber that can be at intracavity horizontal slip, dog chamber right-hand member face is fixed be equipped with the right-hand member with the pressure spring that dog chamber right side chamber wall is connected.

2. A lift ladder with material conveying function, as claimed in claim 1, wherein: the right end of the baffle at the front side is provided with a second driven cavity, the upper side of the second driven cavity is provided with a friction cavity, the lower cavity wall of the second driven cavity is rotatably provided with two rope winding wheels, the upper end of the rope winding wheel penetrates through the upper cavity wall and the lower cavity wall of the friction cavity, the lower end of the rope winding wheel is provided with two rope winding wheels positioned in the second driven cavity, the first stay rope is wound on the rope winding wheel at the upper side, the second stay rope is wound on the rope winding wheel at the lower side, the upper end of the rope winding wheel is provided with a push rod cavity with an opening, a push rod capable of sliding left and right in the cavity is arranged in the push rod cavity, the left end surface of the push rod is fixedly provided with an elastic spring, the left end of the elastic spring is connected with the left cavity wall of the push rod cavity, the lower end surface of the push rod is fixedly connected with a hemp rope, the inner end face of the friction block is fixedly provided with an extension spring connected with the wall of the elastic cavity, and the inner end face of the friction block is fixedly connected with one branch of the hemp rope.

3. A lift ladder with material conveying function, as claimed in claim 1, wherein: the transmission mechanism comprises a motor fixed on the front cavity wall of the transmission cavity, the rear end of the motor is in power connection with a transmission shaft, the transmission shaft is in key connection with a sliding gear, a slider cavity with a backward opening is arranged in the sliding gear, a slider cavity capable of sliding in the slider cavity is arranged in the slider cavity, the rear end face of the slider cavity is fixedly connected with one end of the second pull rope, the front end of the transmission shaft is provided with a rotating disc, the rear end face of the rotating disc is fixedly provided with two reset springs with the rear ends connected with the sliding gear, the upper cavity wall and the lower cavity wall at the left end of the transmission cavity are rotatably provided with a driving shaft, the lower end of the driving shaft is provided with a first driving pulley rotatably connected with a first driven pulley through a first belt, the upper end of the driving shaft is provided with a rotating gear capable of being meshed with the sliding gear, the upper cavity wall and the lower cavity wall at the rear end of the transmission cavity are rotatably provided with driven shafts, the upper ends of the driven shafts are provided with driven sprockets which are rotatably connected with the driving sprockets through chains, and the lower ends of the driven shafts are provided with the same first driving belt wheel.

4. A lift ladder with material conveying function, as claimed in claim 1, wherein: the conveying mechanism comprises a moving cavity which is positioned on the left cavity wall of the conveying cavity and has an opening towards one side, a moving block which can move up and down in the cavity is arranged in the moving cavity, a loading plate which is positioned in the conveying cavity is fixedly arranged on the right end face of the moving block, ropes are fixedly connected to the front end and the rear end of the upper end face of the loading plate, a third driven cavity is arranged on the upper side of the conveying cavity, a rotating rod is rotatably arranged between the right ends of the two partition plates, two identical reels are arranged at the rear end of the rotating rod, the ropes are wound on the reels, a third driven pulley is arranged at the front end of the rotating rod, a rotating shaft is connected to the third driven pulley, a third driving pulley which is rotatably connected with the third driven pulley is arranged at the front end of the rotating shaft, a second driven pulley is arranged at the rear end of the rotating shaft, and a second belt is connected to the second driven pulley, the last cavity wall of transmission chamber right-hand member rotates and is equipped with driven gear, the driven gear upper end is equipped with driven gear, the rotary rod lower extreme is equipped with drive bevel gear, the back cavity wall of transmission chamber right-hand member rotates and is equipped with the dwang, the dwang front end be equipped with the driven bevel gear that drive bevel gear meshing is connected, the dwang rear end is equipped with through the second belt with the second driven pulleys rotates and connects.

5. A lift ladder with material conveying function, as claimed in claim 3, wherein: the pulling force of the two return springs is larger than the gravity of the sliding gear and the friction force applied to the sliding gear when the sliding gear slides on the transmission shaft.

Technical Field

The invention relates to the field of elevators, in particular to an elevator with a material conveying function.

Background

Often need the operating personnel to carry out the high altitude construction on the building, the high altitude construction then needs to use lifting means, then can carry out the place of co-altitude with the help of lifting work and carry out the operation.

At present, a general lifting device used in high-altitude operation only has a single lifting function, and is inconvenient when articles need to be conveyed to high-altitude operation personnel, and the general lifting device does not have a locking function and has certain potential safety hazards.

Disclosure of Invention

The invention aims to solve the technical problem of providing an elevator with a material conveying function, solves the problems that articles cannot be conveyed independently and the elevator locking function cannot be realized, and increases the functions of conveying articles independently and locking the elevator.

The invention is realized by the following technical scheme.

The invention relates to an elevator with a material conveying function, which comprises a base, wherein a lifting cavity with a leftward opening is arranged at the left end in the base, a conveying cavity with a rightward opening is arranged at the right end in the base, a transmission cavity is arranged at the upper end of the base, a transmission mechanism for providing power for a device is arranged in the transmission cavity, a lifting mechanism with a lifting function is arranged in the lifting cavity, and a conveying mechanism for conveying materials upwards is arranged in the conveying cavity;

the lifting mechanism comprises two clapboards fixed at the front end and the rear end of the upper end face of the base, first driven cavities are arranged in the two clapboards, threaded sleeves with lower ends extending into the lifting cavities are arranged on the upper cavity walls of the two driven cavities in a rotating manner, first driven belt wheels positioned in the lifting cavities are arranged at the lower ends of the threaded sleeves, first belts are connected to the first driven belt wheels, a movement cavity with a leftward opening is arranged on the right cavity wall of the lifting cavity, a movement block capable of sliding up and down in the movement cavity is arranged in the movement cavity, a support plate positioned in the lifting cavity is fixedly arranged on the left end face of the movement block, screw rods with upper ends in threaded connection with the two threaded sleeves are fixedly arranged on the upper end face of the support plate, an opening cavity with a leftward opening is arranged on the right cavity wall of the movement cavity, and a displacement block capable of sliding left and right in the opening, the fixed elasticity spring that is equipped with two left ends of displacement piece right-hand member face and opening chamber right side chamber wall is connected, the first stay cord of displacement piece right-hand member face fixedly connected with, be equipped with the dog chamber that the several opening distributes left and equidistance in the displacement piece, the dog intracavity is equipped with the dog chamber that can be at intracavity horizontal slip, dog chamber right-hand member face is fixed be equipped with the right-hand member with the pressure spring that dog chamber right side chamber wall is connected.

Furthermore, a second driven cavity is arranged at the right end of the partition board at the front side, a friction cavity is arranged at the upper side of the second driven cavity, the lower cavity wall of the second driven cavity is rotatably provided with two rope winding wheels, the upper end of the rope winding wheels penetrates through the upper cavity wall and the lower cavity wall of the friction cavity, the lower end of the rope winding wheels is positioned in the second driven cavity, the first pull rope is wound on the rope winding wheels at the upper side, the second pull rope is wound on the rope winding wheels at the lower side, a push rod cavity with an opening towards the upper end is arranged at the upper end of the rope winding wheels, a push rod capable of sliding left and right in the cavity is arranged in the push rod cavity, an elastic spring is fixedly arranged at the left end of the push rod and connected with the left cavity wall of the push rod cavity, a hemp rope is fixedly connected to the lower end surface of the push rod, a friction wheel positioned in the friction cavity is arranged at, the inner end face of the friction block is fixedly provided with an extension spring connected with the wall of the elastic cavity, and the inner end face of the friction block is fixedly connected with one branch of the hemp rope.

Further, the transmission mechanism comprises a motor fixed on the front cavity wall of the transmission cavity, the rear end of the motor is in power connection with a transmission shaft, the transmission shaft is in key connection with a sliding gear, a slider cavity with a backward opening is arranged in the sliding gear, a slider cavity capable of sliding in the slider cavity is arranged in the slider cavity, the rear end face of the slider cavity is fixedly connected with one end of the second pull rope, the front end of the transmission shaft is provided with a rotating disc, the rear end face of the rotating disc is fixedly provided with two return springs with the rear ends connected with the sliding gear, the upper cavity wall and the lower cavity wall at the left end of the transmission cavity are rotatably provided with a driving shaft, the lower end of the driving shaft is provided with a first driving pulley rotatably connected with the first driven pulley through a first belt, the upper end of the driving shaft is provided with a rotating gear capable of being meshed with the sliding gear, and the, the upper cavity wall and the lower cavity wall at the rear end of the transmission cavity are rotatably provided with driven shafts, the upper ends of the driven shafts are provided with driven sprockets which are rotatably connected with the driving sprockets through chains, and the lower ends of the driven shafts are provided with the same first driving belt wheel.

Further, the conveying mechanism comprises a moving cavity which is located on the left cavity wall of the conveying cavity and has an opening facing to the moving cavity, a moving block which can move up and down in the moving cavity is arranged in the moving cavity, a carrying plate which is located in the conveying cavity is fixedly arranged on the right end face of the moving block, ropes are fixedly connected to the front end and the rear end of the upper end face of the carrying plate, a third driven cavity is arranged on the upper side of the conveying cavity, a rotating rod is rotatably arranged between the right ends of the two partition plates, two identical reels are arranged at the rear end of the rotating rod, the ropes are wound on the reels, a third driven pulley is arranged at the front end of the rotating rod, the third driven pulley is connected with the third driven pulley, a rotating shaft is rotatably arranged on the front cavity wall and the rear cavity wall of the third driven cavity, a third driving pulley which is rotatably connected with the third driven pulley is arranged at, the second driven pulley is connected and is equipped with the second belt, the last cavity wall of transmission chamber right-hand member rotates and is equipped with driven gear, the driven gear upper end is equipped with driven gear, the rotary rod lower extreme is equipped with drive bevel gear, the back cavity wall of transmission chamber right-hand member rotates and is equipped with the dwang, the dwang front end be equipped with the driven bevel gear that drive bevel gear meshing is connected, the dwang rear end be equipped with through the second belt with the second driven pulley rotates and is connected.

Furthermore, the pulling force of the two return springs is greater than the gravity of the sliding gear and the friction force applied to the sliding gear when the sliding gear slides on the transmission shaft.

The invention has the beneficial effects that: the lifting platform is simple in structure and convenient and fast to operate, people can be lifted to different heights according to the requirement of manual operation height during working, the lifting platform can be locked after being lifted to the designated position, so that the safety of operation workers is ensured, the workers working at high places can convey articles, and the difficulty in conveying the articles to the high places is reduced.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram at A-A in FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram at B-B in FIG. 1 according to an embodiment of the present invention;

FIG. 4 is a schematic view of a transmission chamber according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of the structure at C in FIG. 1 according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram at D-D in FIG. 4 according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of the structure at E-E in FIG. 4 according to an embodiment of the present invention;

FIG. 8 is a schematic view of a friction wheel according to an embodiment of the present invention.

Detailed Description

The invention will now be described in detail with reference to fig. 1-8, wherein for ease of description the orientations described below are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The elevator with the material conveying function, which is described with reference to fig. 1-8, includes a base 10, a left-opening lifting cavity 18 is provided at the left end in the base 10, a right-opening conveying cavity 29 is provided at the right end in the base 10, a transmission cavity 34 is provided at the upper end of the base 10, a transmission mechanism 78 for providing power for the apparatus is provided in the transmission cavity 34, a lifting mechanism 75 with the lifting function is provided in the lifting cavity 18, a conveying mechanism 76 for conveying materials upwards is provided in the conveying cavity 29, the lifting mechanism 75 includes two partition plates 23 fixed at the front end and the rear end of the upper end of the base 10, first driven cavities 24 are provided in the two partition plates 23, a threaded sleeve 21 with a lower end extending into the lifting cavity 18 is rotatably provided on the upper cavity walls of the two driven cavities 24, a first driven pulley 22 located in the lifting cavity 18 is provided at the lower end of the threaded sleeve 21, the first driven belt wheel 22 is connected with a first belt 20, the right cavity wall of the lifting cavity 18 is provided with a moving cavity 15 with a leftward opening, a moving block 16 capable of sliding up and down in the moving cavity 15 is arranged in the moving cavity, the left end face of the moving block 16 is fixedly provided with a support plate 17 positioned in the lifting cavity 18, the upper end face of the support plate 17 is fixedly provided with a screw rod 19 with the upper end in threaded connection with the two threaded sleeves 21, the right cavity wall of the moving cavity 15 is provided with an opening cavity 13 with a leftward opening, the inside of the opening cavity 13 is provided with a displacement block 14 capable of sliding left and right, the right end face of the displacement block 14 is fixedly provided with two elastic springs 90 with the left ends connected with the right cavity wall of the opening cavity 13, the right end face of the displacement block 14 is fixedly connected with a first pull rope 59, a plurality of block cavities 70 with leftward openings and equidistantly distributed, and block cavities 72 capable of sliding left and right in the cavity, and a pressure spring 71 with the right end connected with the right cavity wall of the block cavity 70 is fixedly arranged on the right end face of the block cavity 72.

Beneficially, a second driven cavity 58 is arranged at the right end of the partition plate 23 at the front side, a friction cavity 60 is arranged at the upper side of the second driven cavity 58, a cavity wall 62 with an upper end penetrating through the upper and lower cavity walls of the friction cavity 60 is rotatably arranged at the lower cavity wall of the second driven cavity 58, two rope winding wheels 57 positioned in the second driven cavity 58 are arranged at the lower end of the cavity 62, the first pull rope 59 is wound on the rope winding wheel 57 at the upper side, a second pull rope 80 is wound on the rope winding wheel 57 at the lower side, a push rod cavity 63 with an opening towards the upper end is arranged at the upper end of the 62, a push rod 64 capable of sliding left and right in the cavity is arranged in the push rod cavity 63, an elastic spring 61 with a left end connected with the left cavity wall of the push rod cavity 63 is fixedly arranged at the left end of the push rod 64, a hemp rope 65 is fixedly connected to the lower end face of the push rod 64, a friction wheel 66 positioned in the friction cavity 60, a friction block 68 capable of sliding in the elastic cavity 67 is arranged in the elastic cavity 67, an expansion spring 69 connected with the cavity wall of the elastic cavity 67 is fixedly arranged on the inner end face of the friction block 68, and a branch of the hemp rope 65 is fixedly connected with the inner end face of the friction block 68.

Advantageously, the transmission mechanism 78 includes a motor 51 fixed on the front cavity wall of the transmission cavity 34, a transmission shaft 50 is connected to the rear end of the motor 51 in a power manner, a sliding gear 42 is connected to the transmission shaft 50 in a key manner, a slider cavity 40 with a backward opening is arranged in the sliding gear 42, a slider cavity 41 capable of sliding in the cavity is arranged in the slider cavity 40, one end of the second pull rope 80 is fixedly connected to the rear end surface of the slider cavity 41, a rotating disc 52 is arranged at the front end of the transmission shaft 50, two return springs 39 with the rear ends connected to the sliding gear 42 are fixedly arranged at the rear end surface of the rotating disc 52, a driving shaft 38 is rotatably arranged on the upper and lower cavity walls at the left end of the transmission cavity 34, a first driving pulley 35 rotatably connected to the first driven pulley 22 through the first belt 20 is arranged at the lower end of the driving shaft 38, a rotating gear 36 capable of being engaged with the sliding gear, the upper end of the driving shaft 38 is further provided with a driving sprocket 37 positioned on the upper side of the rotating gear 36, the upper cavity wall and the lower cavity wall at the rear end of the transmission cavity 34 are rotatably provided with a driven shaft 55, the upper end of the driven shaft 55 is provided with a driven sprocket 54 rotatably connected with the driving sprocket 37 through a chain 56, and the lower end of the driven shaft 55 is provided with the same first driving pulley 35.

Beneficially, the conveying mechanism 76 includes a moving cavity 12 located on the left cavity wall of the conveying cavity 29 and having a certain opening, a moving block 11 capable of moving up and down in the moving cavity is arranged in the moving cavity 12, a loading plate 30 located in the conveying cavity 29 is fixedly arranged on the right end face of the moving block 11, ropes 28 are fixedly connected to the front end and the rear end of the upper end face of the loading plate 30, a third driven cavity 26 is arranged on the upper side of the conveying cavity 29, a rotating rod 33 is rotatably arranged between the right ends of the two partition plates 23, two identical reels 32 are arranged at the rear end of the rotating rod 33, the ropes 28 are wound on the reels 32, a third driven pulley 31 is arranged at the front end of the rotating rod 33, a rotating shaft 82 is connected to the third driven pulley 31, a rotating shaft 27 is rotatably arranged on the front and rear cavity walls of the third driven cavity 26, a third driving pulley 25 rotatably connected to the third driven pulley 31 through the rotating shaft 82 is arranged at, the pivot 27 rear end is equipped with second driven pulley 83, the connection is equipped with second belt 47 on the second driven pulley 83, the last cavity wall rotation of transmission chamber 34 right-hand member is equipped with driven gear 43, driven gear 43 upper end is equipped with driven gear 43, rotary rod 44 lower extreme is equipped with drive bevel gear 45, the back cavity wall rotation of transmission chamber 34 right-hand member is equipped with dwang 48, dwang 48 front end be equipped with the driven bevel gear 46 that drive bevel gear 45 meshing is connected, dwang 48 rear end is equipped with through second belt 47 with second driven pulley 83 rotates and connects.

Advantageously, the tension of the two return springs 39 is greater than the weight of the sliding gear 42 and the friction to which the sliding gear 42 is subjected when sliding on the transmission shaft 50.

In the initial state, the sliding gear 42 is engaged with the rotating gear 36, the sliding gear 42 is disengaged from the driven gear 43, the push rod 64 is located at the right end of the push rod cavity 63 under the action of the elastic force of the elastic spring 61, the hemp rope 65 is in a relaxed state, and the six friction blocks 68 in the friction wheel 66 are not under the action of the tensile force of the hemp rope 65 and are in frictional connection with the cavity wall of the friction cavity 60 under the action of the telescopic spring 69;

when a person needs to lift, the motor 51 is started, the motor 51 works to drive the transmission shaft 50 to rotate, so as to drive the sliding gear 42 to rotate, so as to drive the rotating gear 36 meshed with the sliding gear to rotate, the rotating gear 36 rotates to drive the driving shaft 38 and the first driving belt wheels 35 and the driving chain wheels 37 on the driving shaft 38 to rotate, the driving chain wheels 37 rotate to drive the driven chain wheels 54 connected with the driving chain wheels through the chains 56 to rotate, the driven chain wheels 54 rotate to drive the driven shaft 55 and the first driving belt wheels 35 on the driven shaft 55 to rotate, the two first driving belt wheels 35 rotate to drive the two first driven belt wheels 22 connected with the first belt 20 to rotate, so as to drive the two threaded sleeves 21 to rotate, the two threaded sleeves 21 rotate to drive the two threaded screws 19 in threaded connection with the driven shaft 55 to move upwards, so as to drive a person on the support plate 17 to move upwards, and drive, when the support plate 17 moves upwards, the stop block cavity 72 can be popped leftwards and positioned at the lower side of the motion block 16 to stop the motion block 16 from moving downwards, so that the support plate 17 is prevented from falling down, the safety of workers on the support plate 17 is ensured, and when the lifting is required to be stopped, the motor 51 is turned off;

when an article needs to be transported to a high place, the push rod 64 is manually squeezed, the push rod 64 moves leftwards and tensions the hemp rope 65, the six friction blocks 68 are positioned in the elastic cavity 67 under the tension action of the hemp rope 65, the friction blocks 68 are separated from the contact with the cavity wall of the friction cavity 60, the second pull rope 80 on the rope winding wheel 57 is tensioned through rotation 62, the sliding gear 42 moves upwards under the tension action of the second pull rope 80 and is meshed and connected with the driven gear 43 to be separated and connected with the rotating gear 36, the motor 51 is started, the motor 51 works to drive the sliding gear 42 to rotate through mechanical transmission, so as to drive the driven gear 43 meshed and connected with the sliding gear 42 to rotate, so as to drive the rotating rod 44 and the driving bevel gear 45 at the lower end of the rotating rod 44 to rotate, the driving bevel gear 45 rotates to drive the driven bevel gear 46 meshed and connected with the driving bevel gear 48 to rotate, so as to drive, the second driving pulley 73 rotates to drive the second driven pulley 83 connected with the second driving pulley through the second belt 47 to rotate, the second driven pulley 83 rotates the rotating shaft 27 and the third driving pulley 25 on the rotating shaft 27 to drive the third driven pulley 31 connected with the rotating shaft 82 to rotate, the third driven pulley 31 rotates to drive the rotating rod 33 and the two reels 32 on the rotating rod 33 to rotate, so that the two ropes 28 are tightened, the object carrying plate 30 and the objects on the object carrying plate 30 are pulled to move upwards, and when the objects are conveyed to a specified position, the motor 51 is turned off;

when the resetting is needed, the starting motor 51 works reversely, the push rod 64 on the pressing 62 is squeezed, so that the hemp rope 65 and the friction block 68 connected with the hemp rope 65 are controlled to move, the rotation 62 achieves the meshing state of the control sliding gear 42, the function of lifting people or conveying articles is switched, and finally the whole device is reset through mechanical transmission.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.