CN218931377U

CN218931377U - Elevator weighing device

Info

Publication number: CN218931377U
Application number: CN202320028809.XU
Authority: CN
Inventors: 康丽
Original assignee: Suzhou Xinshian Electrical Technology Co ltd
Current assignee: Suzhou Xinshian Electrical Technology Co ltd
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-04-28
Anticipated expiration: 2033-01-06

Abstract

The utility model discloses an elevator weighing device, which comprises: the fixed seat is fixedly arranged on the underframe, a movable cavity is arranged in the fixed seat, and a weighing mechanism is arranged in the movable cavity; the bottom end of the guide pillar penetrates through the bottom wall of the fixed seat and stretches into the movable cavity, and then the guide pillar is connected with the weighing mechanism, a pressing block is fixedly arranged at the top end of the guide pillar and located under the movable sedan-chair bottom, and the pressing block can be pressed down when the movable sedan-chair bottom descends, so that the guide pillar moves vertically downwards. The device is realized by adopting two modes of increasing the number of the sensors and adopting the strip magnets for increasing the detection distance and the detection precision.

Description

Elevator weighing device

Technical Field

The utility model particularly relates to the technical field of elevator weighing, in particular to an elevator weighing device.

Background

The main problem of the current weighing adjustment is the separate installation of the magnet and the sensor, as follows (see fig. 7):

1. the magnet and the sensor are respectively installed, and a larger magnet is needed in order to reduce the influence on the measurement precision;

2. the distance between the magnet and the sensor has a great influence on the detection precision, and in order to improve the detection precision, the distance between the magnet and the sensor is required to be high during installation;

3. when a plurality of detection values are required to be set, the adopted detection mode is that firstly, the Hall voltage is converted into digital quantity through an AD converter, and then, after the digital quantity is processed by a singlechip, a light load and full load overload signal is output, so that the setting is inconvenient.

Disclosure of Invention

Therefore, the utility model provides an elevator weighing device to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: an elevator weighing device, comprising:

the fixed seat is fixedly arranged on the underframe, a movable cavity is arranged in the fixed seat, and a weighing mechanism is arranged in the movable cavity;

the bottom end of the guide post penetrates through the bottom wall of the fixed seat and extends into the movable cavity, and then the guide post is connected with the weighing mechanism, a pressing block is fixedly arranged at the top end of the guide post and is positioned right below the movable sedan-chair bottom, and the pressing block can be pressed down when the movable sedan-chair bottom descends, so that the guide post vertically moves downwards;

and the spring is sleeved on the side wall of the guide post and connected between the pressing block and the fixing seat.

Further, as an preference, the weighing mechanism includes a short magnet, a first hall sensor and a second hall sensor, the short magnet is fixedly installed at the bottom end of the guide post, the first hall sensor and the second hall sensor are arranged below the short magnet, and a space is reserved between the first hall sensor and the second hall sensor.

Further, preferably, the first hall sensor and the second hall sensor use a voltage addition amplifying circuit.

Further, preferably, the weighing mechanism includes a long magnet and a third hall sensor, the long magnet is fixedly mounted at the bottom end of the guide post, and the third hall sensor is disposed on the right side of the long magnet.

Further, preferably, the long magnet is provided as a cylinder.

Further, preferably, the third hall sensor employs a voltage buffer amplifier circuit.

Compared with the prior art, the utility model has the following beneficial effects:

1. the device integrates the magnet and the Hall sensor together, is convenient to install, and the integrated mode is that the magnet and the Hall sensor are relatively displaced when the movable car bottom moves by adding the guide post, so that the detection precision is optimized.

2. The device is realized by adopting two modes of increasing the number of the sensors and adopting the strip magnets for increasing the detection distance and the detection precision.

Drawings

Fig. 1 is a schematic view of an elevator weighing device according to an embodiment;

fig. 2 is a schematic flow chart of an embodiment of an elevator weighing device;

fig. 3 is a schematic diagram of a second embodiment of an elevator weighing device;

fig. 4 is a schematic flow chart of a second embodiment of an elevator weighing device;

FIG. 5 is a circuit diagram of different threshold voltages adjusted by a potentiometer;

FIG. 6 is a circuit diagram of different threshold voltages adjusted in a coordinated manner;

fig. 7 is a schematic diagram of a prior art structure.

In the figure: 1. a car bottom bracket; 2. a movable car bottom; 3. a damping rubber pad; 4. a spring; 5. a short magnet; 6. a chassis; 7. a second hall sensor; 8. a first hall sensor; 9. a fixing seat; 10. a guide post; 11. briquetting; 12. a third hall sensor; 13. a long magnet.

Detailed Description

In conjunction with the drawings in the embodiments of the present utility model, the technical solutions of the embodiments of the present utility model will be clearly and completely described below.

Example 1: referring to fig. 1 and 2, the present utility model provides a technical solution: an elevator weighing device, comprising:

the fixed seat 9 is fixedly arranged on the underframe 6, a movable cavity is arranged in the fixed seat 9, and a weighing mechanism is arranged in the movable cavity;

the bottom end of the guide post 10 penetrates through the bottom wall of the fixed seat 9 and extends into the movable cavity, and then is connected with the weighing mechanism, a pressing block 11 is fixedly arranged at the top end of the guide post 10, the pressing block 11 is positioned right below the movable car bottom 2, and the pressing block 11 can be pressed down when the movable car bottom 2 descends, so that the guide post 10 moves vertically downwards;

specifically, a damping rubber pad 3 is arranged between the bottom of the movable car bottom 2 and the car bottom bracket 1;

and the spring 4 is sleeved on the side wall of the guide post 10, and the spring 4 is connected between the pressing block 11 and the fixing seat 9.

In this embodiment, the weighing mechanism includes a short magnet 5, a first hall sensor 8 and a second hall sensor 7, the short magnet 5 is fixedly installed at the bottom end of the guide post 10, the first hall sensor 8 and the second hall sensor 7 are arranged below the short magnet 5, and a space is reserved between the first hall sensor 8 and the second hall sensor 7;

specifically, the output voltages of the two sensors with the distance D1 are added and amplified, and compared with one sensor in the prior art, the detection distance and the detection precision can be improved.

In the present embodiment, the first hall sensor 8 and the second hall sensor 7 employ a voltage addition amplifying circuit;

specifically, the multipath threshold voltage is adjusted by adjusting the resistance value of the potentiometer, and the adjustment is simple and visual and is convenient to use.

Example 2: referring to fig. 3 and 4, the present utility model provides another technical solution: the elevator weighing device comprises a fixed seat 9, wherein the fixed seat 9 is fixedly arranged on a bottom frame 6, a movable cavity is arranged in the fixed seat 9, and a weighing mechanism is arranged in the movable cavity;

In this embodiment, the weighing mechanism includes a long magnet 13 and a third hall sensor 12, the long magnet 13 is fixedly mounted at the bottom end of the guide post 10, and the third hall sensor 12 is disposed on the right side of the long magnet 13.

In the present embodiment, the long magnet 13 is provided as a cylinder;

specifically, the long magnet 13 may be provided in other long shapes such as a rectangular parallelepiped, and the detection distance may be increased.

In this embodiment, the third hall sensor 12 employs a voltage buffer amplifying circuit;

It should be noted that in embodiments 1 and 2, referring to fig. 5 and 6, the threshold voltages may be set independently, or may be set in a linkage manner, specifically two of the threshold voltages are set, and other threshold values are obtained in a resistor voltage division manner according to the characteristics of the damping rubber pad 3.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An elevator weighing device, characterized in that it comprises:

the fixed seat (9), the fixed seat (9) is fixedly arranged on the underframe (6), a movable cavity is arranged in the fixed seat (9), and a weighing mechanism is arranged in the movable cavity;

the bottom end of the guide post (10) penetrates through the bottom wall of the fixed seat (9) and stretches into the movable cavity, and then the guide post is connected with the weighing mechanism, a pressing block (11) is fixedly arranged at the top end of the guide post (10), the pressing block (11) is positioned right below the movable car bottom (2), and the pressing block (11) can be pressed down when the movable car bottom (2) descends, so that the guide post (10) moves vertically and downwards;

and the spring (4) is sleeved on the side wall of the guide post (10), and the spring (4) is connected between the pressing block (11) and the fixing seat (9).

2. An elevator weighing device according to claim 1, characterized in that: the weighing mechanism comprises a short magnet (5), a first Hall sensor (8) and a second Hall sensor (7), wherein the short magnet (5) is fixedly installed at the bottom end of the guide pillar (10), the first Hall sensor (8) and the second Hall sensor (7) are arranged below the short magnet (5), and a distance is reserved between the first Hall sensor (8) and the second Hall sensor (7).

3. An elevator weighing device according to claim 2, characterized in that: the first Hall sensor (8) and the second Hall sensor (7) adopt voltage addition amplifying circuits.

4. An elevator weighing device according to claim 1, characterized in that: the weighing mechanism comprises a long magnet (13) and a third Hall sensor (12), wherein the long magnet (13) is fixedly installed at the bottom end of the guide pillar (10), and the third Hall sensor (12) is arranged on the right side of the long magnet (13).

5. An elevator weighing device according to claim 4, characterized in that: the long magnet (13) is provided as a cylinder.

6. An elevator weighing device according to claim 5, characterized in that: the third Hall sensor (12) adopts a voltage buffer amplifying circuit.