Laser ranging early warning device for mounting and dismounting of tower crane

Abstract

The utility model discloses a tower crane mounting and dismounting laser ranging early warning device, and particularly relates to the technical field of tower crane mounting, the tower crane mounting and dismounting laser ranging early warning device comprises a mounting frame and a laser range finder main body, the laser range finder main body is located at the top of the mounting frame, and a moving assembly is arranged at the bottom of the laser range finder main body; the moving assembly comprises a stepping motor, a first lead screw, two sliding rods, a sliding plate, a supporting frame, a frame and an indicating plate, the stepping motor is fixedly installed on the front side of the installation frame, and the end of an output shaft of the stepping motor is fixedly connected with the first lead screw. The laser range finder main body and the reflector are matched to detect the distance of the jacking oil cylinder, when the jacking oil cylinder inclines, the alarm works to give out alarm sound, and the stepping motor works to drive the laser range finder main body and the reflector to move horizontally, so that the jacking oil cylinder is prevented from inclining. The positions of the laser range finder body and the reflector are adjusted according to the diameters of different jacking oil cylinders, operation is easy, and the distance between key components in the mounting and dismounting process can be conveniently monitored in real time.

Description

Technical Field

[0001] This utility model relates to the field of tower crane installation technology, and more specifically, to a tower crane installation and dismantling laser ranging and early warning device. Background Technology

[0002] Tower cranes are the most commonly used large lifting equipment in construction. They consist of a tower body, jib, counterweight jib, slewing mechanism, etc. They are mainly used for hoisting building materials such as steel bars, concrete, steel pipes, and precast components. They are one of the core equipment for high-rise building and large-scale engineering construction. Tower cranes need to be assembled on site before being put into use and disassembled and removed after the project is completed.

[0003] A search revealed that Chinese patent CN222593313U discloses a tower crane lifting cylinder extension detection device. This device, using a fixed plate, motion guide plate, sliding frame, connecting block, and threaded rod, facilitates the clamping block to clamp and fix the rope displacement sensor. It also allows for easy installation and disassembly, enhancing flexibility. With the cooperation of the rope displacement sensor and receiving plate, it enables real-time detection of the extension length of the second connecting rod at the first and second cylinders, allowing staff to promptly detect abnormal extensions and improving safety.

[0004] The existing tower crane lifting cylinders are not convenient for real-time monitoring of the distance between key components during installation and disassembly. They rely on manual visual observation and experience, making it difficult to guarantee installation accuracy. When the connecting pin of the lifting cylinder and the tower frame is aligned, if the insertion depth is insufficient or the pin is offset, it is difficult for humans to control it accurately. This can lead to uneven force on the cylinder, causing the pin to suddenly fall off during the lifting process and causing the frame to fall. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, this utility model provides a tower crane installation and dismantling laser ranging and early warning device, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tower crane laser ranging and early warning device, comprising a mounting frame and a laser rangefinder body, wherein the laser rangefinder body is located at the top of the mounting frame, and a moving component is provided at the bottom of the laser rangefinder body. The moving component includes a stepper motor, a first lead screw, two slide rods, a slide plate, a support frame, a frame, and an indicator plate. The stepper motor is fixedly mounted on the front side of the mounting frame, and the output shaft end of the stepper motor is fixedly connected to the first lead screw. Both the front and rear ends of the first lead screw are movably connected to the mounting frame through bearings, and the outer side of the first lead screw is threadedly connected to the slide plate. The top end of the support frame is fixedly connected to the laser rangefinder body, and the bottom end of the support frame extends into the interior of the mounting frame and is fixedly connected to the slide plate. One side of the frame extends into the interior of the mounting frame and is fixedly connected to the slide plate. An alarm is fixedly mounted on the rear side of the mounting frame.

[0007] Furthermore, both ends of the two slide rods are fixedly connected to the mounting frame, and both slide rods pass through the slide plate.

[0008] As can be seen, in the above technical solution, the two sliding rods restrict the rotation of the sliding plate.

[0009] Furthermore, one side of the indicator plate extends into the interior of the mounting frame and is fixedly connected to the slide plate. A scale is provided on the top of the indicator plate, and one side of the scale is fixedly connected to the mounting frame.

[0010] As can be seen, in the above technical solution, the sliding plate drives the indicator plate to move horizontally. By cooperating with the indicator plate and the scale, the moving distance of the laser rangefinder body can be observed.

[0011] Furthermore, side plates are fixedly connected to the bottom edges of both the front and rear sides of the mounting frame.

[0012] As can be seen, in the above technical solution, the side plate is installed on the tower crane by bolts, thereby fixing the mounting frame to the tower crane.

[0013] Furthermore, the frame is provided with an adjustment component, which includes a reflector, a fixing frame, a second lead screw, two threaded sleeves, and two limiting rods.

[0014] Furthermore, the top of the fixing frame is fixedly connected to the reflector, one end of the second lead rod passes through the frame and is fixedly connected to the fixing frame, and both threaded sleeves are movably sleeved on the second lead rod, with the opposite sides of the two threaded sleeves contacting the frame.

[0015] Furthermore, the two limiting rods are located on the front and rear sides of the second lead screw, respectively, and one end of each limiting rod passes through the frame and is fixedly connected to the fixing frame.

[0016] It can be seen that the above technical solution aims to limit the deflection of the second lead screw when it moves horizontally.

[0017] The technical effects and advantages of this utility model are as follows:

[0018] 1. This utility model uses a laser rangefinder body and a reflector to detect the distance of the lifting cylinder. When the lifting cylinder tilts, the alarm sounds, the stepper motor drives the first lead screw to rotate, thereby moving the support frame horizontally, and then moving the laser rangefinder body and the reflector horizontally. The position of the laser rangefinder body and the reflector can be adjusted according to the diameter of different lifting cylinders. The operation is simple and convenient for real-time monitoring of the distance between key components during installation and dismantling.

[0019] 2. This utility model releases the fixation between the second lead rod and the frame by rotating the threaded sleeve and moving it away from the frame. The horizontal movement of the fixing frame can drive the reflector to move horizontally. The distance between the reflector and the laser rangefinder body can be adjusted as needed. Similarly, the second lead rod is fixed to the frame by the two threaded sleeves, and the two limiting rods can limit the deflection of the second lead rod when it moves horizontally. The structure is simple and has a wide range of applications. Attached Figure Description

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a rear view of the overall structure of this utility model;

[0023] Figure 3 This is a cross-sectional view of the mounting frame and a schematic diagram of the moving component assembly structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the mobile component of this utility model;

[0025] Figure 5 This is a schematic diagram of the adjustment component structure of this utility model.

[0026] In the diagram: 1. Mounting frame; 2. Laser rangefinder body; 3. Moving component; 4. Side plate; 5. Adjustment component; 6. Scale; 7. Alarm; 301. Stepper motor; 302. First lead screw; 303. Slide bar; 304. Slide plate; 305. Support frame; 306. Frame; 307. Indicator plate; 501. Reflector; 502. Fixing frame; 503. Second lead screw; 504. Threaded sleeve; 505. Limiting rod. Detailed Implementation

[0027] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] Refer to the instruction manual appendix Figure 1-3 The tower crane installation and dismantling laser ranging early warning device of this embodiment includes a mounting frame 1 and a laser rangefinder body 2. The laser rangefinder body 2 is located at the top of the mounting frame 1. A moving component 3 is provided at the bottom of the laser rangefinder body 2. The moving component 3 includes a stepper motor 301, a first lead screw 302, two slide rods 303, a slide plate 304, a support frame 305, a frame 306, and an indicator plate 307. The stepper motor 301 is fixedly installed on the front side of the mounting frame 1, and the output shaft end of the stepper motor 301 is fixedly connected to the first lead screw 302. The front and rear ends of the first lead screw 302 are movably connected to the mounting frame 1 through bearings, and the outer side of the first lead screw 302 is threadedly connected to the slide plate 304. The top end of the support frame 305 is fixedly connected to the laser rangefinder body 2, and the bottom end of the support frame 305 extends into the interior of the mounting frame 1 and is fixedly connected to the slide plate 304. One side of the frame 306 extends into the interior of the mounting frame 1 and is fixedly connected to the slide plate 304. An alarm 7 is fixedly installed on the rear side of the mounting frame 1.

[0029] Furthermore, both ends of the two slide rods 303 are fixedly connected to the mounting frame 1, and both slide rods 303 pass through the slide plate 304. One side of the indicator plate 307 extends into the interior of the mounting frame 1 and is fixedly connected to the slide plate 304. A scale 6 is provided on the top of the indicator plate 307, and one side of the scale 6 is fixedly connected to the mounting frame 1.

[0030] Furthermore, side plates 4 are fixedly connected to the bottom edges of both the front and rear sides of the mounting frame 1.

[0031] Furthermore, an adjustment assembly 5 is provided on the frame 306. The adjustment assembly 5 includes a reflector 501, a fixing frame 502, a second lead screw 503, two threaded sleeves 504, and two limiting rods 505. The top end of the fixing frame 502 is fixedly connected to the reflector 501. One end of the second lead screw 503 passes through the frame 306 and is fixedly connected to the fixing frame 502. The two threaded sleeves 504 are movably sleeved on the second lead screw 503, and the opposite sides of the two threaded sleeves 504 are in contact with the frame 306. The two limiting rods 505 are located on the front and rear sides of the second lead screw 503, and one end of the two limiting rods 505 passes through the frame 306 and is fixedly connected to the fixing frame 502.

[0032] Rotating the threaded sleeve 504 away from the frame 306 releases the fixation between the second lead screw 503 and the frame 306, allowing the horizontal movement of the fixing bracket 502 to drive the reflector 501 to move horizontally. The distance between the reflector 501 and the laser rangefinder body 2 can be adjusted as needed. Similarly, the two threaded sleeves 504 fix the second lead screw 503 to the frame 306, and the two limiting rods 505 can limit the deflection of the second lead screw 503 during horizontal movement. The structure is simple and has a wide range of applications.

[0033] The usage method of this embodiment is as follows:

[0034] In use, the side plate 4 is installed on the tower crane with bolts, thereby fixing the mounting frame 1 to the tower crane. The laser rangefinder body 2 is started and emits a laser beam. The laser beam is calibrated into a parallel beam by an optical lens and accurately points to the reflector 501. The laser beam is reflected by the reflector 501. The laser rangefinder body 2 and the reflector 501 work together to detect the distance to the lifting cylinder to prevent excessive misalignment between the lifting cylinder components during installation. When the laser rangefinder body 2 cannot receive the laser beam, it indicates that the lifting cylinder is tilted, and the alarm 7 will sound an alarm.

[0035] When the stepper motor 301 is started, it drives the first lead screw 302 to rotate. Since the first lead screw 302 is threadedly connected to the slide plate 304, and the two slide rods 303 restrict the rotation of the slide plate 304, the first lead screw 302 can drive the slide plate 304 to move horizontally, thereby driving the support frame 305 to move horizontally, and then driving the laser rangefinder body 2 and the reflector 501 to move horizontally. The position of the laser rangefinder body 2 and the reflector 501 can be adjusted according to the diameter of different lifting cylinders. The operation is simple and convenient for real-time monitoring of the distance between key components during installation and disassembly. At the same time, the slide plate 304 drives the indicator plate 307 to move horizontally. Through the cooperation of the indicator plate 307 and the scale 6, the moving distance of the laser rangefinder body 2 can be observed.

[0036] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tower crane installation and removal laser ranging early warning device, comprising a mounting frame (1) and a laser rangefinder body (2), wherein the laser rangefinder body (2) is located on top of the mounting frame (1), characterized in that: The bottom of the laser rangefinder body (2) is provided with a moving component (3). The moving component (3) includes a stepper motor (301), a first lead screw (302), two slide rods (303), a slide plate (304), a support frame (305), a frame (306), and an indicator plate (307). The stepper motor (301) is fixedly installed on the front side of the mounting frame (1), and the output shaft end of the stepper motor (301) is fixedly connected to the first lead screw (302). The front and rear ends of the first lead screw (302) are connected to the first lead screw (302). The end and the mounting frame (1) are connected by bearings, and the outer side of the first lead screw (302) is threaded to the slide plate (304). The top of the support frame (305) is fixedly connected to the laser rangefinder body (2), and the bottom of the support frame (305) extends into the interior of the mounting frame (1) and is fixedly connected to the slide plate (304). One side of the frame (306) extends into the interior of the mounting frame (1) and is fixedly connected to the slide plate (304). An alarm (7) is fixedly installed on the rear side of the mounting frame (1).

2. The tower crane installation and dismantling laser ranging and early warning device according to claim 1, characterized in that: Both ends of the two slide rods (303) are fixedly connected to the mounting frame (1), and both slide rods (303) pass through the slide plate (304).

3. The tower crane installation and dismantling laser ranging and early warning device according to claim 1, characterized in that: One side of the indicator plate (307) extends into the interior of the mounting frame (1) and is fixedly connected to the slide plate (304). A scale (6) is provided on the top of the indicator plate (307), and one side of the scale (6) is fixedly connected to the mounting frame (1).

4. The tower crane installation and dismantling laser ranging and early warning device according to claim 1, characterized in that: Side plates (4) are fixedly connected to the bottom edges of the front and rear sides of the mounting frame (1).

5. The tower crane installation and dismantling laser ranging and early warning device according to claim 1, characterized in that: An adjustment component (5) is provided on the frame (306). The adjustment component (5) includes a reflector (501), a fixing frame (502), a second lead screw (503), two threaded sleeves (504), and two limiting rods (505).

6. The tower crane installation and dismantling laser ranging and early warning device according to claim 5, characterized in that: The top of the fixing frame (502) is fixedly connected to the reflector (501), one end of the second lead screw (503) passes through the frame (306) and is fixedly connected to the fixing frame (502), and the two threaded sleeves (504) are movably sleeved on the second lead screw (503), and the opposite sides of the two threaded sleeves (504) are in contact with the frame (306).

7. The tower crane installation and dismantling laser ranging and early warning device according to claim 5, characterized in that: The two limiting rods (505) are located on the front and rear sides of the second lead screw (503), and one end of each limiting rod (505) passes through the frame (306) and is fixedly connected to the fixing frame (502).

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