CN219449236U - Lifting vehicle - Google Patents

Abstract

The utility model provides a lift truck, comprising: the lifting platform is arranged at the distance sensor at the top of the lifting platform, a controller connected with the distance sensor, a power switch connected with the controller and a power supply, wherein the power switch is arranged on a circuit of the power supply for supplying power to the lifting platform. The utility model can avoid safety accidents caused by the fact that the distance between the lifting platform and the obstacle is smaller than the preset value.

Description

Lifting vehicle

Technical Field

The utility model relates to the technical field of material lifting, in particular to a lifting vehicle.

Background

The lifting vehicle for site construction has the functions of contacting with an obstacle to stop braking, reaching the set value to stop braking at the height and reaching the set value to stop braking at the gradient. However, the contact of the lift truck with the obstacle stops, and the operator is likely to get stuck by the obstacle and the lift truck, causing serious safety accidents. The operator can grasp the distance from the obstacle through the operating table or the handle, and the safety accident can occur due to misoperation.

Therefore, improvements to existing lift trucks are needed to reduce the risk of safety accidents.

Disclosure of Invention

The utility model aims to provide a lifting vehicle so as to solve the problem that the existing lifting vehicle is easy to cause safety accidents.

In order to solve the technical problems, the present utility model provides a lift truck, comprising: the lifting platform is arranged at the distance sensor at the top of the lifting platform, a controller connected with the distance sensor, a power switch connected with the controller and a power supply, wherein the power switch is arranged on a circuit of the power supply for supplying power to the lifting platform.

Optionally, the number of the distance sensors is a plurality.

Optionally, the lifting platform comprises a lifting platform and a supporting rod arranged on the lifting platform, and the distance sensor is arranged at the top of the supporting rod.

Optionally, the controller is arranged at the bottom of the lifting platform, and a plurality of distance sensors are connected with the controller through wires.

Optionally, the lifting platform further comprises a cable winding and unwinding device, wherein the plurality of the distance sensors are integrated into one cable, and the cable winding and unwinding device is used for synchronously releasing the cable when the lifting platform ascends and synchronously tightening the cable when the lifting platform descends.

Optionally, the cable winding and unwinding device is disposed at the bottom of the lifting platform.

Optionally, the controller includes a rising controller, a delay adjuster connected with the distance sensor and the rising controller, a first comparator connected with the delay adjuster, a switch controller connected with the first comparator, a falling controller, a second comparator connected with the distance sensor and the falling controller, wherein the second comparator is connected with the switch controller, and the switch controller is connected with the power switch.

The lifting vehicle provided by the utility model has the following beneficial effects:

through setting up the distance between lift platform and the barrier with distance sensor at lift platform's top real-time detection, the controller control switch disconnection when distance sensor detects equals the default, so that the power stop to lift platform power supply to avoid the distance between lift platform and the barrier to be less than the default, arouse the incident, also can avoid operating personnel to hold the distance of barrier through operation panel or handle, misoperation will appear the incident. And moreover, the distance sensor is arranged at the top of the lifting platform, so that the interference between the lifting platform and the distance sensor can be avoided, the failure of the measurement data of the distance sensor can be caused, and the safety of the lifting platform can be further improved.

Drawings

FIG. 1 is a schematic view of a lift truck according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a distance sensor and an obstacle in an embodiment of the utility model;

fig. 3 is a control block diagram of the lift car in an embodiment of the utility model.

Reference numerals illustrate:

100-lifting platform; 110-lifting platform; 120-supporting rods;

200-distance sensor;

300-a controller;

400-Barrier

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, 2 and 3, fig. 1 is a schematic structural diagram of a lift truck according to an embodiment of the present utility model, fig. 2 is a schematic diagram of a distance sensor and an obstacle according to an embodiment of the present utility model, and fig. 3 is a control block diagram of a lift truck according to an embodiment of the present utility model, where the embodiment provides a lift truck, including: the lifting platform 100, the distance sensor 200 that sets up lifting platform 100 top, with the controller 300 that distance sensor 200 is connected, with the switch of power that controller 300 is connected to and power, wherein, switch of power sets up the power supply for lifting platform 100 is on the circuit of power supply.

Through setting up distance sensor 200 at the distance between lift platform 100 and the obstacle 400 of the real-time detection in top of lift platform 100, controller 300 control switch disconnection when distance sensor 200 detects the distance equals the default to make the power stop to lift platform 100 power supply, thereby avoid lift platform 100 and obstacle 400 between the distance be less than the default, arouse the incident, also can avoid operating personnel to hold the distance to obstacle 400 through operation panel or handle, misoperation will appear the incident. In addition, the distance sensor 200 is arranged at the top of the lifting platform 100, so that the interference between the lifting platform 100 and the distance sensor 200 can be avoided, the failure of the measurement data of the distance sensor 200 can be caused, and the safety of the lifting platform 100 can be further improved.

The number of the distance sensors 200 is plural, and the plurality of distance sensors 200 are disposed at the top of the lifting platform 100, so that the detection information of the distance sensors 200 can cover the top of the lifting platform 100, preventing the situation that the obstacle 400 above the other side cannot be detected in real time due to the fact that the distance sensors 200 are disposed at one side only, and further improving the safety of the lifting vehicle.

Referring to fig. 1, the lifting platform 100 includes a lifting platform 110 and a supporting rod 120 disposed on the lifting platform 110, and the distance sensor 200 is disposed on top of the supporting rod 120, so that objects on the lifting platform 110 can be prevented from affecting the detection effect of the distance sensor 200.

The lifting table 110 is rectangular, the number of the supporting rods 120 is four, and the four supporting rods 120 are arranged at four corners of the lifting table 110.

The controller 300 is disposed at the bottom of the lifting platform 100, and the plurality of distance sensors 200 are connected with the controller 300 through wires.

The lifting platform 110 further comprises a cable winding and unwinding device, wherein the plurality of wires of the distance sensor 200 are collected into a cable, and the cable winding and unwinding device is used for synchronously releasing the cable when the lifting platform 100 ascends and synchronously tightening the cable when the lifting platform 100 descends.

The cable winding and unwinding device is disposed at the bottom of the lifting platform 100.

Referring to fig. 3, the controller 300 includes a rising controller, a delay setter connected to the distance sensor 200 and the rising controller, a first comparator connected to the delay setter, a switch controller connected to the first comparator, a falling controller, a second comparator connected to the distance sensor 200 and the falling controller, wherein the second comparator is connected to the switch controller, and the switch controller is connected to the power switch.

When the lifting controller sends a lifting instruction, the distance between the lowest points of the obstacles 400 is detected through the distance sensor 200 arranged on the lifting platform 100, then the distance information is transmitted to the delay setter connected with the distance sensor 200 and the lifting controller, the distance information is converted into delay information through the delay setter, the delay information is transmitted to the first comparator, the first comparator compares the delay information with a preset value and sends a comparison result to the switch controller, when the delay information is larger than the preset value, the switch controller controls the power switch to be closed, and when the delay information is smaller than or equal to the preset value, the switch controller controls the power switch to be opened, wherein the delay information is the distance information minus a set value, the set value can be M times of lifting precision of the lifting platform 100, M is a positive integer, and the preset value is the minimum safe distance from the obstacles 400; the descending controller sends a descending instruction, detects the distance between the lowest points of the obstacles 400 through the distance sensor 200 arranged on the lifting platform 100, then transmits the distance information to a second comparator connected with the distance sensor 200, compares the distance information with a preset value and sends the comparison result to the switch controller, when the distance information is larger than the preset value, the switch controller controls the power switch to be closed, and when the distance information is smaller than or equal to the preset value, the switch controller controls the power switch to be opened.

The controller 300 of the lift truck in this embodiment is provided with a delay setter, which can stop the lift platform 100 from approaching the obstacle 400 before the distance between the lift platform 100 and the obstacle 400 is preset in the lifting process, when the lift platform 100 needs to descend, the real-time distance detected by the distance sensor 200 is greater than the preset value, so that the descending control instruction and the distance information are sent to the second comparator, and the second comparator can send an instruction for controlling the power switch to be closed to the switch controller, so that the lift platform 100 is in a state of being communicated with the power supply, and the purpose of continuous lifting and descending operation can be achieved.

For example, the preset value is 3 meters, M is 1, the rising accuracy is 0.005 meters, when the rising controller sends out the rising instruction and the distance information detected by the distance sensor 200 is 3.005 meters, the delay setter converts 3.005 meters into 3 meters and then transmits the 3 meters to the first comparator, the first comparator compares the delay information of 3 meters with the preset value of 3 meters and transmits the comparison result to the switch controller, and the switch controller controls the power switch to be turned off when the delay information is smaller than or equal to the preset value. The descending controller sends a descending instruction, detects the distance between the lowest points of the obstacles 400 through the distance sensor 200 arranged on the lifting platform 100, then transmits the distance information to the second comparator connected with the distance sensor 200, compares the distance information with a preset value and sends the comparison result to the switch controller, when the distance information is greater than the preset value by 3 meters, the switch controller controls the power switch to be closed, and when the distance information is less than or equal to the preset value by 3 meters, the switch controller controls the power switch to be opened.

The above description is only illustrative of the preferred embodiments of the present utility model and is not intended to limit the scope of the present utility model, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.

Claims (7)

1. A lift truck, comprising: the lifting platform is arranged at the distance sensor at the top of the lifting platform, a controller connected with the distance sensor, a power switch connected with the controller and a power supply, wherein the power switch is arranged on a circuit of the power supply for supplying power to the lifting platform.

2. The lift truck of claim 1, wherein the number of distance sensors is a plurality.

3. The lift truck of claim 1, wherein the lift platform comprises a lift table and a support bar disposed on the lift table, the distance sensor being disposed on top of the support bar.

4. The lift truck of claim 1, wherein the controller is disposed at a bottom of the lift platform, and the plurality of distance sensors are connected to the controller by wires.

5. The lift truck of claim 4, wherein the lift platform further comprises a cable take-up and pay-off device, wherein the plurality of distance sensor conductors are gathered into a cable, and wherein the cable take-up and pay-off device is configured to simultaneously release the cable when the lift platform is raised and simultaneously tighten the cable when the lift platform is lowered.

6. The lift truck of claim 5, wherein the cable take-up and pay-off device is disposed at a bottom of the lift platform.

7. The lift truck of claim 1, wherein the controller comprises a rise controller, a delay adjuster coupled to the distance sensor and the rise controller, a first comparator coupled to the delay adjuster, a switch controller coupled to the first comparator, a fall controller, a second comparator coupled to the distance sensor and the fall controller, wherein the second comparator is coupled to the switch controller, and the switch controller is coupled to the power switch.