Tower crane body inclination monitoring device

Abstract

The utility model discloses a tower crane tower body inclination monitoring device which comprises an installation support used for being connected with the top of a tower body, a first photoelectric distance measuring instrument and a second photoelectric distance measuring instrument are installed on the installation support, and the first photoelectric distance measuring instrument and the second photoelectric distance measuring instrument are installed in a mutually perpendicular and crossed mode. The first electro-optical distance meter and the second electro-optical distance meter are respectively provided with a level bubble, when the level bubble on the first electro-optical distance meter is centered, the measuring light of the first electro-optical distance meter is parallel to the vertical line of the tower body, and when the level bubble on the second electro-optical distance meter is centered, the measuring light of the second electro-optical distance meter is parallel to the vertical line of the tower body. And the measuring light of the second photoelectric range finder is parallel to the mounting surface of the tower body. According to the utility model, the gradient and the settlement value of the tower body of the tower crane can be continuously monitored, so that the tipping accident of the tower body is avoided.

Description

Technical Field

[0001] This utility model relates to tower cranes, specifically to a tower crane tilt monitoring device. Background Technology

[0002] Tower cranes, also known as tower hoists, are a common type of mechanical equipment used in engineering construction. A tower crane is a rotating crane with its jib mounted on a tall tower. During operation, if the verticality, settlement, or horizontal displacement of the tower exceeds permissible limits, the crane's center of gravity will shift, increasing the risk of overturning.

[0003] An electro-optical distance measuring instrument, also known as a light speed distance measuring instrument, is an instrument that uses modulated light waves for precise distance measurement. Its measuring range can reach approximately 2.5 kilometers and can also be used for nighttime operations. The principle of electro-optical distance measurement is as follows: When measuring the distance between two points, the distance measuring instrument is placed at one point, and a reflector is placed at the other point. When the distance measuring instrument emits light to the reflector, it is reflected back to the instrument. Assuming the speed of light c is known, and if the time t for the light beam to travel back and forth over the distance to be measured is also known, then the distance D can be calculated using the formula D = ct / 2.

[0004] The short-range infrared photoelectric distance meter has a maximum range of 2500m and a ranging accuracy of ±(3mm + 2×10⁻⁶×D) (where D is the measured distance); the minimum reading is 1mm; the instrument is equipped with an automatic light intensity adjustment device, and the light intensity can also be manually adjusted during measurements in complex environments; it can automatically correct the results by inputting temperature, air pressure, and prism constant; it can automatically calculate the horizontal distance and elevation difference by inputting the vertical angle; it can perform line setting and layout through distance presets; if the coordinates and elevation of the station are input, it can automatically calculate the coordinates and elevation of the observation point. The distance measurement modes include normal measurement and tracking measurement. The normal measurement takes 3 seconds and can display the average value of several measurements; the tracking measurement takes 0.8 seconds and automatically repeats the distance measurement at regular time intervals. Utility Model Content

[0005] The technical problem to be solved by this utility model is to avoid the risk of tower crane overturning caused by tower crane tilting. This utility model provides a tower crane tilt monitoring device that can monitor the tilt of the tower crane.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A tower crane tilt monitoring device includes a mounting bracket for connecting to the top of the tower body. A first photoelectric distance meter and a second photoelectric distance meter are mounted on the mounting bracket. The first and second photoelectric distance meters are installed perpendicularly to each other, and a level bubble is installed on each of the first and second photoelectric distance meters. When the level bubble on the first photoelectric distance meter is centered, the measuring light of the first photoelectric distance meter is parallel to the vertical line of the tower body. When the level bubble on the second photoelectric distance meter is centered, the measuring light of the second photoelectric distance meter is parallel to the mounting surface of the tower body.

[0008] Furthermore, the target of the first photoelectric rangefinder is installed at the bottom of the tower body, and the target of the second photoelectric rangefinder is installed at the same height as the main unit of the tower body.

[0009] Furthermore, both the first and second photoelectric rangefinders are infrared photoelectric rangefinders capable of emitting linear lasers.

[0010] Furthermore, both the first and second photoelectric rangefinders are hinged to the mounting bracket, and positioning mechanisms are respectively provided between the first and second photoelectric rangefinders and the mounting bracket.

[0011] Furthermore, the first photoelectric rangefinder and the second photoelectric rangefinder are respectively connected to the control platform of the tower crane through a data transmission mechanism.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1) This utility model uses a high-precision photoelectric rangefinder to emit laser light to continuously monitor the verticality, settlement and horizontal displacement of a tower crane. It can detect the deformation of the tower body in a timely manner, so as to take effective measures to adjust or repair before the overturning accident occurs, thus avoiding the occurrence of major safety accidents.

[0014] 2) By replacing the tower crane body of this utility model with a high-rise building or large-scale equipment, this utility model can also be used for safety monitoring of high-rise buildings or large-scale equipment, and has a wide range of applications.

[0015] 3) This utility model has a simple structure, is easy to manufacture, can be installed and brought to the site before construction, has low cost and good effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention.

[0018] In the diagram: 1 First photoelectric distance measuring instrument, 2 Level bubble, 3 Mounting bracket, 4 Second photoelectric distance measuring instrument. Detailed Implementation

[0019] The present invention will be further described below with reference to specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figure 1An embodiment of the tower crane tilt monitoring device of this utility model includes a mounting bracket 3 for connecting to the top of the tower body. A first photoelectric distance meter 1 and a second photoelectric distance meter 5 are mounted on the mounting bracket 3, and the first and second photoelectric distance meters 1 and 5 are installed perpendicularly to each other. A level bubble 2 is installed on each of the first and second photoelectric distance meters 1 to ensure that the measuring rays emitted by the first and second photoelectric distance meters 1 and 4 are absolutely plumb or horizontal. The target (reflector or prism) of the first photoelectric distance meter 1 is installed at the bottom of the tower body. When the level bubble on the first photoelectric distance meter 1 is centered, the measuring rays of the first photoelectric distance meter 1 are parallel to the vertical line of the tower body. Thus, the measuring rays of the first photoelectric distance meter 1 can be vertically emitted onto its target. By analyzing the data measured by the first photoelectric distance meter 1 at different time points, the verticality and settlement of the tower body can be monitored. The target (reflector or prism) of the second photoelectric distance measuring instrument 4 is installed at the same height as the main unit on the tower, so that the measuring light of the second photoelectric distance measuring instrument 4 is horizontally emitted onto its target. By comparing the data measured by the second photoelectric distance measuring instrument 4 at different time points, the horizontal displacement of the tower can be monitored. When the level bubble of the second photoelectric distance measuring instrument 4 is centered, the measuring light of the second photoelectric distance measuring instrument 4 is parallel to the mounting surface of the tower.

[0023] Clearly, both the first photoelectric rangefinder 1 and the second photoelectric rangefinder 4 are photoelectric rangefinders capable of emitting linear lasers. A short-range infrared photoelectric rangefinder is preferred.

[0024] To facilitate the adjustment of the installation positions of the first photoelectric rangefinder 1 and the second photoelectric rangefinder 4, both the first photoelectric rangefinder 1 and the second photoelectric rangefinder 4 are hinged to the mounting bracket 3. Furthermore, positioning mechanisms (not shown in the figure) are respectively provided between the first photoelectric rangefinder 1 and the second photoelectric rangefinder 4 and the mounting bracket 3 to facilitate positioning after the installation positions of the first photoelectric rangefinder 1 and the second photoelectric rangefinder 4 have been adjusted to their correct positions. This positioning mechanism can employ known positioning methods.

[0025] This utility model can also be configured with a data transmission mechanism to transmit the data measured by the first photoelectric rangefinder 1 and the second photoelectric rangefinder 4 to the control platform of the tower crane, so as to automatically and continuously provide data feedback to the customer in real time (the method of transmitting data using a data transmission mechanism is existing technology and will not be described in detail here), thereby realizing real-time safety monitoring of the tower crane.

[0026] In use, this invention employs a mounting bracket to place the first and second photoelectric distance measuring instruments, each equipped with a level bubble, on the top of the tower crane. After centering the level bubbles on the first and second photoelectric distance measuring instruments, the main unit of the first photoelectric distance measuring instrument 1 emits a plumb (vertical) laser towards its corresponding target, while the main unit of the second photoelectric distance measuring instrument 4 emits a horizontal laser towards its corresponding target. Based on this, the verticality and settlement of the tower can be monitored by comparing the data measured by the first photoelectric distance measuring instrument 1 at different time periods, and the horizontality or horizontal displacement of the tower can be monitored by comparing the data measured by the second photoelectric distance measuring instrument 4 at different time periods.

[0027] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model should fall within the protection scope of the technical solution of this utility model.

Claims

1. A tower crane tilt monitoring device, comprising a mounting bracket for connecting to the top of the tower body, characterized in that: The mounting bracket is equipped with a first photoelectric distance meter and a second photoelectric distance meter. The first photoelectric distance meter and the second photoelectric distance meter are installed perpendicularly to each other, and a level bubble is installed on each of the first photoelectric distance meter and the second photoelectric distance meter. When the level bubble on the first photoelectric distance meter is centered, the measuring light of the first photoelectric distance meter is parallel to the vertical line of the tower. When the level bubble on the second photoelectric distance meter is centered, the measuring light of the second photoelectric distance meter is parallel to the mounting surface of the tower.

2. The tower crane tilt monitoring device according to claim 1, characterized in that, The target of the first photoelectric rangefinder is installed at the bottom of the tower, and the target of the second photoelectric rangefinder is installed at the same height as the main unit of the tower.

3. The tower crane tilt monitoring device according to claim 1, characterized in that, Both the first and second photoelectric rangefinders are infrared photoelectric rangefinders capable of emitting linear lasers.

4. The tower crane tilt monitoring device according to claim 1, characterized in that, Both the first and second photoelectric rangefinders are hinged to the mounting bracket, and positioning mechanisms are respectively provided between the first and second photoelectric rangefinders and the mounting bracket.

5. The tower crane tilt monitoring device according to claim 1, characterized in that, The first photoelectric distance measuring instrument and the second photoelectric distance measuring instrument are respectively connected to the control platform of the tower crane through a data transmission mechanism.

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