Double-layer lift car capable of stretching out and drawing back automatically

Abstract

An automatic telescopic double-layer lift car comprises an upper lift car body, a lower lift car body and a driving mechanism, and an upper lift car chamber used for containing a turnover box is formed in the upper lift car body; the lower lift car sleeves the periphery of the upper lift car in an up-down moving manner, and a lower lift car chamber allowing the upper lift car to be embedded therein is formed in the lower lift car; the driving mechanism is arranged between the upper lift car and the lower lift car and drives the lower lift car to move up and down relative to the upper lift car so as to adjust the space of the lower lift car. Comprising two rotating wire wheels oppositely arranged at the top of an upper lift car, a wire winding wheel arranged at the top of a lower lift car and opposite to the two rotating wire wheels, two steel wire ropes arranged between the opposite rotating wire wheels and the wire winding wheel correspondingly, and a driving piece arranged at the top of the upper lift car and used for driving the two rotating wire wheels to rotate. The double-layer lift car is simple in overall structure, the requirement for the depth of a foundation pit does not need to be greatly improved while the double-layer carrying effect is achieved, and the use requirements of different project sites are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevators, and in particular relates to an automatically retractable double-deck elevator car. Background Art

[0002] The cost pressure of logistics and distribution has led to the gradual application of delivery robots in various short-distance delivery scenarios such as delivery and meal delivery. This unmanned delivery method can not only save labor costs, but also improve the user's fun experience and to a certain extent ensure the privacy of users' shopping. Therefore, the application of delivery robots in short-distance delivery will inevitably become more and more extensive.

[0003] The freight elevator in the prior art is single-layer, which will limit the use of robots when used to transport turnover boxes or other items. However, if a double-layer freight elevator is used, the depth of the pit needs to be increased, and the height of the car is fixed and cannot be adaptively adjusted, which needs further improvement. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide an automatically retractable double-deck elevator car.

[0005] The utility model adopts the following technical solutions:

[0006] An automatically retractable double-deck car comprises an upper car, a lower car and a driving mechanism.

[0007] An upper car, wherein an upper car chamber for placing turnover boxes is formed inside;

[0008] The lower car is movable up and down and sleeved on the outer periphery of the upper car, and a lower car chamber is formed inside the lower car chamber for the upper car to be embedded;

[0009] The driving mechanism is arranged between the upper car and the lower car, and drives the lower car to move up and down relative to the upper car to adjust the space of the lower car chamber. It includes two rotating wire wheels arranged relatively to each other on the top of the upper car, a winding wheel arranged on the top of the lower car opposite to the two rotating wire wheels, two steel ropes respectively arranged between the relatively rotating wire wheels and the winding wheel, and a driving member arranged on the top of the upper car to drive the two rotating wire wheels to rotate.

[0010] Furthermore, the driving member includes a rotating shaft connected between the two rotating wire wheels, a rotating motor driving the rotating shaft to rotate, and a reducer connected between the rotating motor and the rotating shaft.

[0011] Furthermore, the driving member also includes two bearing seats arranged on the top of the upper car relatively to each other for supporting the rotating shaft and a mounting plate arranged on the top of the upper car for mounting the two bearing seats.

[0012] Furthermore, the driving member also includes two rope-pressing members arranged on the mounting plate and opposite to the two rotating wheels. The rope-pressing members include a rope-pressing rod arranged above the rotating wheels and a mounting seat arranged on the mounting plate for installing the rope-pressing rod. The axis of the rope-pressing rod is opposite to the axis of the rotating wheels in vertical direction, and a clearance hole for the rotating shaft to pass through is formed on the mounting seat.

[0013] Furthermore, both sides of the end of the mounting plate extend inward to form a clearance groove for the wire rope to pass through.

[0014] Furthermore, the driving mechanism also includes a guide member arranged between the upper car and the lower car, and the guide member includes guide slide rails relatively arranged on both sides of the upper car and extending along its length direction and guide sliders relatively arranged inside the lower car chamber and cooperating with the relative guide slide rails.

[0015] Furthermore, limit switches are provided at the top of the upper car and the bottom of the lower car.

[0016] Furthermore, a support frame for supporting the winding wheel is arranged on the top of the lower car.

[0017] From the above description of the utility model, it can be seen that compared with the prior art, the beneficial effects of the utility model are: the overall structure of the double-deck car defined in the present application is simple, and the effect of carrying turnover boxes and robots at the same time can be achieved through the lower car that can move up and down, and when the car descends to the lowest level, the upper car and the lower car can be compressed to the minimum height, reducing the requirements for the depth of the foundation pit. While achieving the double-deck carrying effect, there is no need to significantly increase the requirements for the depth of the foundation pit, so as to meet the use needs of different project sites. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 is a structural schematic diagram of the upper car;

[0020] Figure 3 is a schematic diagram of the structure of the lower car;

[0021] In the figure, 1-upper car, 2-lower car, 3-driving mechanism, 4-limit switch, 11-upper car chamber, 21-lower car chamber, 22-support frame, 31-rotating wheel, 32-winding wheel, 33-wire rope, 34-driving member, 341-rotating shaft, 342-rotating motor, 343-reducer, 344-bearing seat, 345-mounting plate, 346-rope pressing member, 347-rope pressing rod, 348-mounting seat, 349-clearance hole, 340-clearance groove, 35 guide member, 351-guide slide rail, 352-guide slider. DETAILED DESCRIPTION

[0022] The present invention is further described below through specific implementation methods.

[0023] Reference Figures 1 to 3 As shown, an automatically retractable double-deck elevator car comprises an upper elevator car 1, a lower elevator car 2 and a driving mechanism 3.

[0024] The upper car 1 has an upper car chamber 11 formed inside for placing turnover boxes. Specifically, the upper car 1 is a car structure commonly used in the field of elevator technology, and its specific structure and working principle will not be further elaborated here.

[0025] The lower car 2 can be moved up and down and is mounted on the outer periphery of the upper car 1. A lower car chamber 21 is formed inside the lower car 2 for the upper car 1 to be embedded in. The lower car chamber 21 can be used to carry a robot. Specifically, limit switches 4 are provided on the top of the upper car 1 and the bottom of the lower car 2. Through the limit switches 4 on the upper car 1 and the lower car 2, double limiting of the double-decker car is achieved, so that the lower car 2 can be extended and retracted within a limited range to better meet the conditions of different sites.

[0026] The driving mechanism 3 is arranged between the upper car 1 and the lower car 2, and drives the lower car 2 to move up and down relative to the upper car 1 to adjust the space of the lower car chamber 21, including two rotating pulleys 31 arranged relatively to each other on the top of the upper car 1, a winding pulley 32 arranged on the top of the lower car 2 and opposite to the two rotating pulleys 31, two steel ropes 33 respectively arranged between the relatively rotating pulleys 31 and the winding pulley 32, a driving member 34 arranged on the top of the upper car 1 to drive the two rotating pulleys 31 to rotate, and a guide member 35 arranged between the upper car 1 and the lower car 2; specifically, a support frame 22 for supporting the winding pulley 32 is arranged on the top of the lower car 2.

[0027] The driving member 34 includes a rotating shaft 341 connected between the two rotating pulleys 31, a rotating motor 342 for driving the rotating shaft 341 to rotate, a reducer 343 connected between the rotating motor 342 and the rotating shaft 341, two bearing seats 344 relatively arranged on the top of the upper car 1 for supporting the rotating shaft 341, a mounting plate 345 arranged on the top of the upper car 1 for mounting the two bearing seats 344, and a rope pressing member 346 arranged on the mounting plate 345 and respectively opposite to the two rotating pulleys 31. The rope pressing member 346 presses the wire rope 33 so that it can withstand the tension and maintain a fixed position. After being pressed by the rope pressing member 346, the wire rope 33 attempts to resist falling or sliding through friction. This friction makes the wire rope 33 stay on the rotating pulley 31, thereby achieving the fixing effect of the lower car 2. Specifically, the rope pressing member 346 includes a The rope pressing rod 347 above the rotating wire wheel 31 and the mounting seat 348 for mounting the rope pressing rod 347 are arranged on the mounting plate 345. Furthermore, the axis of the rope pressing rod 347 is opposite to the axis of the rotating wire wheel 31 in upper and lower directions, and a clearance hole 349 for the rotating shaft 341 to pass through is formed on the mounting seat 348; the two sides of the end of the mounting plate 345 extend inward to form a clearance groove 340 for the wire rope 33 to pass through; when the lower car 2 needs to move upward, the rotating motor 342 drives the rotating shaft 341 to rotate and drives the rotating wire wheel 31 to rotate and reel in the wire rope 33, so that the lower car 2 moves upward under the action of the wire rope 33; when the lower car 2 needs to move downward, the rotating motor 342 reverses and drives the rotating shaft 341 to rotate and drives the rotating wire wheel 31 to rotate and unwind the wire rope 33, so that the lower car 2 moves downward under the action of the wire rope 33.

[0028] The guide member 35 includes guide rails 351 relatively arranged on both sides of the upper car 1 and extending along its length direction, and guide sliders 352 relatively arranged on the inner side of the lower car chamber 21 and cooperating with the guide rails 351; the cooperation between the guide sliders 352 and the guide rails 351 ensures that the lower car 2 can move up and down stably.

[0029] When the elevator is working, when it is necessary to carry a turnover box and a robot at the same time, the upper car 1 is used to carry the turnover box, and the driving mechanism 3 drives the lower car 2 to move downward, and adjusts the height of the lower car chamber 21 to meet the carrying requirements of the robot; when it is not necessary to carry the robot, the driving mechanism 3 drives the lower car 2 to move upward, so that the upper car 1 is placed in the lower car chamber 21 to the greatest extent, reducing the space occupied by the car.

[0030] The overall structure of the double-decker car defined in the present application is simple. By means of the lower car 2 that can move up and down, it is possible to carry both the turnover box and the robot at the same time. When the car descends to the lowest level, the upper car 1 and the lower car 2 can be compressed to the minimum height, thereby reducing the requirement for the depth of the foundation pit. While achieving the double-decker loading effect, there is no need to significantly increase the requirement for the depth of the foundation pit, so as to meet the usage requirements of different project sites.

[0031] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of implementation of the present utility model. That is, equivalent changes and modifications made according to the scope of the patent application of the present utility model and the contents of the specification should still fall within the scope covered by the patent of the present utility model.

Claims

1. An automatically retractable double-deck car, characterized in that: It includes an upper car, a lower car and a driving mechanism. An upper car, wherein an upper car chamber for placing turnover boxes is formed inside; The lower car is movable up and down and sleeved on the outer periphery of the upper car, and a lower car chamber is formed inside the lower car chamber for the upper car to be embedded; The driving mechanism is arranged between the upper car and the lower car, and drives the lower car to move up and down relative to the upper car to adjust the space of the lower car chamber. It includes two rotating wire wheels arranged relatively to each other on the top of the upper car, a winding wheel arranged on the top of the lower car opposite to the two rotating wire wheels, two steel ropes respectively arranged between the relatively rotating wire wheels and the winding wheel, and a driving member arranged on the top of the upper car to drive the two rotating wire wheels to rotate.

2. The automatically retractable double-deck elevator car according to claim 1, characterized in that: The driving member comprises a rotating shaft connected between two rotating wire wheels, a rotating motor driving the rotating shaft to rotate, and a speed reducer connected between the rotating motor and the rotating shaft.

3. The automatically retractable double-deck elevator car according to claim 2, characterized in that: The driving member also includes two bearing seats arranged on the top of the upper car opposite to each other for supporting the rotating shaft and a mounting plate arranged on the top of the upper car for mounting the two bearing seats.

4. The automatically retractable double-deck elevator car according to claim 3, characterized in that: The driving member also includes two rope-pressing members arranged on the mounting plate and respectively opposite to the two rotating wire wheels. The rope-pressing members include a rope-pressing rod arranged above the rotating wire wheel and a mounting seat arranged on the mounting plate for mounting the rope-pressing rod. The axis of the rope-pressing rod is opposite to the axis of the rotating wire wheel in vertical direction, and a clearance hole for the rotating shaft to pass through is formed on the mounting seat.

5. The automatically retractable double-deck elevator car according to claim 3, characterized in that: Both sides of the end of the mounting plate extend inwards to form clearance grooves for the steel wire rope to pass through.

6. The automatically retractable double-deck elevator car according to claim 1, characterized in that: The driving mechanism also includes a guide member arranged between the upper car and the lower car, and the guide member includes guide rails relatively arranged on both sides of the upper car and extending along its length direction and a guide slider relatively arranged on the inner side of the lower car chamber and cooperating with the relative guide rails.

7. The automatically retractable double-deck elevator car according to claim 1, characterized in that: The top of the upper car and the bottom of the lower car are both provided with limit switches.

8. The automatically retractable double-deck elevator car according to claim 1, characterized in that: A support frame for supporting the winding wheel is arranged on the top of the lower car.

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