Elevator weighing device based on Internet of Things

Abstract

The utility model relates to the technical field of elevator weighing, and particularly discloses an elevator weighing device based on the Internet of Things, which comprises a device base, two fixing bolts are arranged in the device base, fixing frames are arranged on two sides of the device base, a buffer mechanism for buffering the device is arranged above the fixing frames, and the buffer mechanism is arranged above the device base. The two sides of the fixing frame are each provided with a guiding mechanism used for guiding the buffering mechanism, and a weighing mechanism used for weighing the elevator is arranged above the buffering mechanism. The buffer mechanism comprises two mounting plates, and the number of the mounting plates is two. By means of the arranged buffering mechanism, when the elevator is overloaded and large weight is transmitted to a microswitch, the microswitch can push a mounting plate to vertically move, so that a movable screw rod moves in a limiting piece, a buffering spring is pushed to be compressed, the buffering effect is achieved, the position of the movable screw rod can be adjusted by screwing a limiting nut, and the safety of the elevator is improved. The buffering force is convenient to adjust.

Description

TECHNICAL FIELD

[0001] The utility model relates to elevator weighing technical field especially is based on internet of things's elevator weighing device. BACKGROUND

[0002] The elevator weighing device based on the internet of things is an advanced device integrating sensing technology, computer technology, communication technology and embedded system. It has many advantages such as real-time monitoring, remote management, data security, etc. These advantages make the device have a wide application prospect in the elevator industry. For example, it can be used for load monitoring, overload warning, fault analysis, etc. of the elevator, improving the safety and operation efficiency of the elevator. At the same time, the device can also be linked with other internet of things devices to realize more intelligent elevator management and control.

[0003] The position of the existing fixed plate is fixed with the elevator lower beam, and the distance between the switch connected with the fixed plate and the contact iron at the lower end of the car is fixed. When the elevator needs to bear heavier load, other elevator weighing devices need to be used again, which has room for improvement.

[0004] The existing patent (publication number: CN207404649U) discloses an elevator weighing device, which comprises a mounting seat mounted on a lower rope head plate and a micro switch. The mounting seat comprises a fixed plate fixed with the lower rope head plate and a bracket for mounting the micro switch. The bracket and the fixed plate are relatively slidable in the vertical direction. It changes the position of the micro switch on the bracket, so as to realize the change of the maximum weighing load of the elevator corresponding to the micro switch. After determining the position of the bracket, the bracket is fixedly connected to the fixed plate by a locking piece, so as to realize the stable support of the bracket to the micro switch.

[0005] In view of the above problems, the existing patent changes the position of the micro switch on the bracket to realize the adjustment of the maximum weighing load of the elevator corresponding to the micro switch. However, in actual use, this scheme lacks effective protection of the micro switch. For example, when the elevator is overloaded, a large pressure will be applied to the micro switch, which may damage the internal parts of the micro switch. SUMMARY

[0006] The utility model aims at providing an elevator weighing device based on the internet of things. When the elevator is overloaded and a large weight is transferred to the micro switch, the micro switch will push the mounting plate to move vertically, so that the movable screw moves in the limiting piece, and then pushes the buffer spring to compress, realizing the buffering effect. By turning the limiting nut, the position of the movable screw can be adjusted, which is convenient for adjusting the buffering force to solve the problems in the above background technology.

[0007] To achieve the above object, the utility model provides following technical scheme: a kind of elevator weighing device based on internet of things, including device base, the inside of device base is equipped with two fixed bolts, the both sides of device base are equipped with fixed frame, the top of fixed frame is equipped with buffer mechanism for buffering device, the both sides of fixed frame are equipped with guiding mechanism for guiding buffer mechanism, the top of buffer mechanism is equipped with weighing mechanism for weighing elevator;

[0008] The buffer mechanism includes a mounting plate, the mounting plate is provided with two, two The mounting plate is respectively arranged above the two fixed frames, the lower surface of two The mounting plate is fixed with a movable screw, the lower surface of the movable screw is threadedly connected with two limit nuts, and the outer surface of the movable screw is sleeved with a buffer spring connected with the mounting plate.

[0009] Preferably, the lower end of the fixed frame is provided with two fixed screws threadedly connected with the device base.

[0010] Preferably, the guiding mechanism includes a limiting piece, the limiting piece is arranged on the outer surface of the fixed frame, and the movable screw and the limiting piece are connected in an extendable manner.

[0011] Preferably, the limiting piece is internally provided with two limiting bolts threadedly connected with the fixed frame, and the limiting piece is internally connected with a limiting plate fixedly connected with the mounting plate.

[0012] Preferably, the weighing mechanism includes a micro switch, the micro switch is provided with two, and two The micro switch is respectively installed at the lower end of two The mounting plate.

[0013] Preferably, the upper surface of two The micro switch is fixed with a switch pressure rod, and the outer surface of the switch pressure rod is provided with a fixed nut abuttingly connected with the upper surface of the mounting plate.

[0014] Preferably, the outer surface of the switch pressure rod is sleeved with a return spring, and the upper surface of the return spring is abuttingly connected with an adjusting screw internally threadedly connected with the switch pressure rod.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. When the elevator is overloaded and the large weight is transferred to the micro switch, the micro switch pushes the mounting plate to move vertically, the movable screw moves in the limiting piece, and the buffer spring is pushed to compress, thereby achieving the buffering effect.

[0017] 2. Through the set weighing mechanism, the elevator car will have vertical movement, into the adjusting screw movement, so that the adjusting screw switch pressure rod movement, micro switch is opened and closed, the two micro switch is full load detection switch and overload detection switch. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will be a brief introduction to the drawings needed to be used in the specific embodiments or prior art description, obviously, the following description of the drawings is some embodiments of the present utility model, for those skilled in the art, without creative labor, according to these drawings, other drawings can also be obtained.

[0019] Figure 1 It is the overall structure view of the present utility model;

[0020] Figure 2 It is the three-dimensional structure schematic view of the present utility model;

[0021] Figure 3 It is the three-dimensional structure schematic view of the mounting plate of the present utility model;

[0022] Figure 4 It is the three-dimensional structure schematic view of the present utility model; Figure 2 It is the enlarged view of A in the figure.

[0023] Explanation of reference signs:

[0024] 1, device base;2, fixed bolt;3, fixed frame;4, mounting plate;41, movable screw;42, limit nut;43, buffer spring;5, fixed screw;6, limiting piece;61, limit bolt;62, limit plate;7, micro switch;71, switch pressure rod;72, fixed nut;73, return spring;74, adjusting screw. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the present utility model, obviously, the described embodiments are only some embodiments of the present utility model, not all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present utility model.

[0026] The present utility model provides a technical scheme:

[0027] Please refer to Figures 1 to 4The utility model relates to an elevator weighing device based on internet of things, including device base 1, two fixed bolts 2 are installed in the inside of device base 1, fixed frame 3 is installed to both sides of device base 1, the upper portion of fixed frame 3 is equipped with the buffer mechanism for buffering to device, the both sides of fixed frame 3 are equipped with the guide mechanism for guiding to buffer mechanism, the upper portion of buffer mechanism is equipped with the weighing mechanism for weighing to elevator,

[0028] Buffer mechanism includes mounting plate 4, mounting plate 4 is equipped with two, two mounting plate 4 is placed on the upper portion of two fixed frame 3, the lower surface of two mounting plate 4 is fixed with movable screw rod 41, the lower surface of movable screw rod 41 is threadedly connected with two limiting nuts 42, the outer surface of movable screw rod 41 is equipped with buffer spring 43 and mounting plate 4 abutment connection, the lower end of fixed frame 3 side is installed with two fixed screws 5 and device base 1 is threadedly connected.

[0029] Through adopting the above technical scheme, before using the elevator weighing device based on internet of things, device base 1 is placed to the appropriate position first, device base 1 is fixed through the use of fixed bolt 2, when passenger enters and exits in and out of elevator car, elevator car will have vertical movement, entering will press and move adjusting screw rod 74, so that adjusting screw rod 74 drives switch pressure rod 71 to move, microswitch 7 is opened and closed, two microswitches 7 are set as full load detection switch and overload detection switch, when elevator car is full, one microswitch 7 is pressed and opened, when elevator is not full, any microswitch 7 is not pressed and opened, under the elastic force of reset spring 73, adjusting screw rod 74 is reset, guaranteeing the normal closing of microswitch 7, the setting of fixed nut 72 can guarantee stability, and by screwing adjusting screw rod 74, the distance between adjusting screw rod 74 and the bottom of elevator car can be adjusted, which is convenient for subsequent maintenance and use, microswitch 7 converts the detected signal into an electrical signal, which is transmitted to the single-chip microcomputer for analysis and processing to obtain weight signal data, through the communication protocol, the accurate elevator car overload signal after calculation is sent to the car top serial communication board, and the elevator real-time floor and operation signal data sent by the elevator main controller through the car top serial communication board are received by the control circuit in the weighing controller, which is used as the car weighing logic calculation, the internet of things terminal device is connected with the elevator main controller and the cloud server, the internet of things remote management terminal is connected with the cloud server, through this bridge, elevator real-time operation data can be stored on the data network storage cloud server, and remote processing information data can be received through the cloud service bridge and sent to the elevator main controller.

[0030] Specifically, as Figure 1 , Figure 2 and Figure 4As shown, the guide mechanism includes a limiting piece 6, which is arranged on the outer surface of the fixed frame 3, and the movable screw 41 is connected with the limiting piece 6 in an extension mode, the limiting piece 6 is internally provided with two limiting bolts 61 which are threadedly connected with the fixed frame 3, and the limiting piece 6 is slidably connected with a limiting plate 62 which is fixedly connected with the mounting plate 4, and the weighing mechanism includes two micro switches 7, which are arranged at the lower ends of the two mounting plates 4, respectively, and the upper surfaces of the two micro switches 7 are fixedly provided with switch pressing rods 71, the outer surfaces of the switch pressing rods 71 are arranged with fixed nuts 72 which are abuttingly connected with the upper surfaces of the mounting plates 4, the outer surfaces of the switch pressing rods 71 are sleeved with return springs 73, and the upper surfaces of the return springs 73 are abuttingly connected with adjusting screws 74 which are threadedly connected with the interiors of the switch pressing rods 71.

[0031] When the elevator is overloaded and a large weight is transferred to the micro switch 7, the micro switch 7 pushes the mounting plate 4 to move vertically, so that the movable screw 41 moves in the limiting piece 6, and then pushes the buffer spring 43 to compress, thereby achieving the buffering effect, and the position of the movable screw 41 can be adjusted by screwing the limiting nut 42, so as to conveniently adjust the buffering strength, and the fixed screw 5 arranged on the fixed frame 3 is convenient to disassemble.

[0032] Working principle: the device base 1 is fixed by using the fixed bolt 2, when passengers get in and out of the elevator car, the elevator car moves vertically, and the adjusting screw 74 is pressed to move, so that the adjusting screw 74 drives the switch pressing rod 71 to move, and the micro switch 7 is opened and closed, the two micro switches 7 are respectively full-load detection switches and overload detection switches, when the elevator car is fully loaded, one micro switch 7 is pressed to open, when the elevator car is not fully loaded, none of the micro switches 7 is pressed to open, under the elastic force of the return spring 73, the adjusting screw 74 is pushed to reset, so as to ensure the normal closing of the micro switch 7, the fixed nut 72 can ensure the stability, and the distance between the adjusting screw 74 and the bottom of the elevator car can be adjusted by screwing the adjusting screw 74, which is convenient for subsequent maintenance and use. When the elevator is overloaded and a large weight is transferred to the micro switch 7, the micro switch 7 pushes the mounting plate 4 to move vertically, so that the movable screw 41 moves in the limiting piece 6, and then pushes the buffer spring 43 to compress, thereby achieving the buffering effect, and the position of the movable screw 41 can be adjusted by screwing the limiting nut 42, so as to conveniently adjust the buffering strength, and the fixed screw 5 arranged on the fixed frame 3 is convenient to disassemble.

[0033] Finally, it should be noted that: the above embodiments are used to illustrate the technical solutions of the present application, but not limited to them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An elevator weighing device based on the Internet of Things, comprising a device base (1), characterized in that: The device base (1) has two fixing bolts (2) installed inside. Fixing frames (3) are installed on both sides of the device base (1). A buffering mechanism for buffering the device is provided above the fixing frame (3). A guiding mechanism for guiding the buffering mechanism is provided on both sides of the fixing frame (3). A weighing mechanism for weighing the elevator is provided above the buffering mechanism. The buffer mechanism includes a mounting plate (4), and there are two mounting plates (4). The two mounting plates (4) are respectively placed above two fixed frames (3). The lower surfaces of the two mounting plates (4) are fixed with movable screws (41). The lower surfaces of the movable screws (41) are threaded with two limit nuts (42). The outer surface of the movable screws (41) is fitted with a buffer spring (43) that abuts against the mounting plate (4).

2. The elevator weighing device based on the Internet of Things according to claim 1, characterized in that: Two fixing screws (5) are installed on the lower end of one side of the fixing frame (3) and are threaded to the device base (1).

3. The elevator weighing device based on the Internet of Things according to claim 1, characterized in that: The guiding mechanism includes a limiting member (6), which is placed on the outer surface of the fixed frame (3), and the movable screw (41) is telescopically connected to the limiting member (6).

4. The elevator weighing device based on the Internet of Things according to claim 3, characterized in that: The limiting member (6) has two limiting bolts (61) that are threadedly connected to the fixing frame (3) installed inside, and a limiting plate (62) that is fixedly connected to the mounting plate (4) is slidably connected inside the limiting member (6).

5. The elevator weighing device based on the Internet of Things according to claim 1, characterized in that: The weighing mechanism includes two micro switches (7), which are respectively installed at the lower ends of two mounting plates (4).

6. The elevator weighing device based on the Internet of Things according to claim 5, characterized in that: Both microswitches (7) have a switch lever (71) fixed on their upper surfaces, and a fixing nut (72) is provided on the outer surface of the switch lever (71) to abut against the upper surface of the mounting plate (4).

7. The elevator weighing device based on the Internet of Things according to claim 6, characterized in that: A reset spring (73) is sleeved on the outer surface of the switch lever (71), and an adjusting screw (74) that is threadedly connected to the inside of the switch lever (71) is abutted on the upper surface of the reset spring (73).

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