Tower crane hook displacement detection device
By designing a combination of camera, fill light ring and pointing rod on a tower crane, and combining with the comparison of scale lines, the accurate detection of hook displacement is achieved, solving the problems of insufficient detection accuracy and susceptibility to light and occlusion in the prior art.
Patent Information
- Application Number
- CN202422341540.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-25
AI Technical Summary
The existing tower crane hook displacement detection methods are susceptible to light and occlusion, and the detection accuracy is insufficient.
A tower crane hook displacement detection device is designed, using a combination of camera and fill light ring to achieve accurate detection of hook displacement through the comparison of pointing rod and scale lines, and prevent foreign objects from obstructing through the cylinder design.
The accuracy of hook displacement detection is improved, the impact of light and occlusion on detection is avoided, and the reliability of detection results is ensured.
Smart Images
Figure CN222989608U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tower cranes, in particular to a hook displacement detection device for a tower crane. Background Technique
[0002] The tower crane, abbreviated as tower crane or tower hoist, is a lifting device originating from Western Europe. It has the characteristics of high efficiency, stability and flexibility, and is widely used in construction sites, ports, docks, logistics centers and other places. By real-time monitoring the displacement of the hook, abnormal movement or position deviation of the hook can be detected in time, so as to prevent lifting accidents caused by hook out of control.
[0003] In the prior art, generally, the displacement of the hook is detected by visual inspection method. The visual inspection method mainly captures the image of the hook through visual sensors such as cameras, and uses the image to analyze the displacement of the hook. This method is intuitive and easy to understand, but it may be affected by environmental factors such as light and occlusion, and it cannot accurately judge the displacement of the hook only by analyzing the image. Therefore, it is necessary to propose a hook displacement detection device for a tower crane to solve the above problems. Content of the Utility Model
[0004] The purpose of the utility model is to provide a hook displacement detection device for a tower crane, which has the characteristics of avoiding being affected by light and occlusions during detection and improving the accuracy of hook displacement detection.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A hook displacement detection device for a tower crane, including a frame, a boom and a hook. A sliding seat is installed at the lower end of the boom, a winch is installed at the lower end of the sliding seat, a hook is arranged below the winch, an installation cross plate is fixedly connected to the front side of the sliding seat, a camera is installed at the upper end of the installation cross plate, a cylinder is fixedly connected to the upper end of the installation cross plate and located outside the camera, a supplementary light ring is arranged inside the cylinder and above the camera, a pointing rod is fixedly connected inside the cylinder and above the supplementary light ring, a horizontal bar is arranged on the front side of the boom, and a scale line is arranged at the lower end of the horizontal bar.
[0006] To facilitate the installation and fixation of the supplementary light ring, as a preferred hook displacement detection device for a tower crane of the utility model, an installation ring is fixedly connected to the inner wall of the cylinder, and the supplementary light ring is fixedly connected to the installation ring.
[0007] To facilitate the installation and fixation of the horizontal bar, as a preferred hook displacement detection device for a tower crane of the utility model, two installation vertical plates distributed left and right are fixedly connected to the front end of the boom, and the horizontal bar is fixedly connected between the two installation vertical plates.
[0008] Preferably, as a hook displacement detection device for a tower crane according to the present utility model, in order to make the positions of the hook and the scale line accurately correspond, the cross bar is parallel to the boom.
[0009] Preferably, as a hook displacement detection device for a tower crane according to the present utility model, in order to make the displacement of the pointing rod the same as that of the hook, the pointing rod and the hook are on the same vertical line.
[0010] Preferably, as a hook displacement detection device for a tower crane according to the present utility model, in order to prevent the cylinder from rubbing against the cross bar during movement, a gap is left between the cylinder and the cross bar.
[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0012] When the sliding seat moves synchronously with the hook, it drives the camera and the pointing rod to move at the same time. At the same time, the pointing rod and the scale line will appear in the monitoring field of view of the camera, and the digital scale on the scale line corresponding to the pointing rod is the displacement of the hook. And the camera will transmit the captured image to the display screen for the inspectors to observe, and then the inspectors judge the displacement of the hook. Furthermore, through this detection method, the accuracy of the hook displacement detection is improved.
[0013] By setting the fill light ring, the captured image of the camera can be filled with light, thereby improving the clarity of the capture. At the same time, since the cylinder is close to the cross bar, foreign objects can be prevented from blocking the captured image, further achieving the purpose of avoiding the influence of light and obstacles during detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is the overall front sectional view of the present utility model;
[0015] Figure 2 is the present utility model's Figure 1 enlarged view at A;
[0016] Figure 3 is the connection structure diagram of the cylinder of the present utility model.
[0017] In the figure: 1, frame; 2, boom; 3, hook; 4, sliding seat; 5, winch; 6, mounting cross plate; 7, camera; 8, mounting ring; 9, fill light ring; 10, cross bar; 11, mounting vertical plate; 12, scale line; 13, cylinder; 14, pointing rod. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments to facilitate understanding of the content of the present utility model. The methods used in the present utility model are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercially available products unless otherwise specified.
[0019] Please refer to Figures 1 to 3 , a displacement detection device for the hook of a tower crane, including a frame 1, a boom 2 and a hook 3. A sliding seat 4 is installed at the lower end of the boom 2, a winch 5 is installed at the lower end of the sliding seat 4, and a hook 3 is arranged below the winch 5. A mounting cross plate 6 is fixedly connected to the front side of the sliding seat 4, a camera 7 is installed at the upper end of the mounting cross plate 6, a cylinder 13 located outside the camera 7 is fixedly connected to the upper end of the mounting cross plate 6, a fill light ring 9 located above the camera 7 is arranged inside the cylinder 13, a pointing rod 14 located above the fill light ring 9 is fixedly connected to the inside of the cylinder 13, a cross bar 10 is arranged on the front side of the boom 2, and a scale line 12 is provided at the lower end of the cross bar 10.
[0020] In this embodiment: When the sliding seat 4 moves under the boom 2, the winch 5 and the hook 3 can move synchronously, and at the same time drive the mounting cross plate 6, the camera 7, the cylinder 13 and the pointing rod 14 to move. At the same time, the pointing rod 14 and the scale line 12 will appear in the monitoring field of view of the camera 7, and the digital scale on the scale line 12 corresponding to the pointing rod 14 is the displacement situation of the hook 3. And the camera 7 will transmit the captured image to a display screen for the inspectors to observe, and then the inspectors will judge the displacement situation of the hook 3. Furthermore, through this detection method, the effect of improving the accuracy of the displacement detection of the hook 3 can be achieved.
[0021] By setting the fill light ring 9, the captured image of the camera 7 can be filled with light, thereby improving the clarity of the capture. At the same time, since the cylinder 13 is close to the cross bar 10, foreign objects can be prevented from blocking the captured image, further achieving the purpose of avoiding the influence of light and blocking objects during detection.
[0022] As a technical optimization scheme of the present utility model, a mounting ring 8 is fixedly connected to the inner wall of the cylinder 13, and the fill light ring 9 is fixedly connected to the mounting ring 8.
[0023] In this embodiment: By setting the mounting ring 8, it is convenient to install and fix the fill light ring 9.
[0024] As a technical optimization scheme of the present utility model, two mounting vertical plates 11 distributed left and right are fixedly connected to the front end of the boom 2, and the cross bar 10 is fixedly connected between the two mounting vertical plates 11.
[0025] In this embodiment: By setting the two mounting vertical plates 11, it is convenient to install and fix the cross bar 10.
[0026] As a technical optimization solution of the present utility model, the horizontal bar 10 is parallel to the lifting arm 2.
[0027] In this embodiment: By making the horizontal bar 10 parallel to the lifting arm 2, the position of the hook 3 can be accurately corresponding to the scale line 12.
[0028] As a technical optimization solution of the present utility model, the pointing rod 14 and the hook 3 are on the same vertical line.
[0029] In this embodiment: By making the pointing rod 14 and the hook 3 on the same vertical line, the displacement situation of the pointing rod 14 is the displacement situation of the hook 3.
[0030] As a technical optimization solution of the present utility model, there is a gap between the cylinder 13 and the horizontal bar 10.
[0031] In this embodiment: By making a gap between the cylinder 13 and the horizontal bar 10, the cylinder 13 can be prevented from rubbing against the horizontal bar 10 when moving.
[0032] Working principle:
[0033] First, when the sliding seat 4 moves under the lifting arm 2, the winder 5 and the hook 3 can move synchronously, and at the same time drive the mounting cross plate 6, the camera 7, the cylinder 13 and the pointing rod 14 to move. At the same time, the pointing rod 14 and the scale line 12 will appear in the monitoring field of view of the camera 7, and the digital scale on the scale line 12 corresponding to the pointing rod 14 is the displacement situation of the hook 3, and the camera 7 will transmit the captured image to the display screen for the inspectors to observe, and then the inspectors judge the displacement situation of the hook 3, and through this detection method, the effect of improving the accuracy of the displacement detection of the hook 3 is achieved.
[0034] By setting the fill light ring 9, the captured image of the camera 7 can be filled with light, so as to improve the clarity of the capture. At the same time, since the cylinder 13 is close to the horizontal bar 10, foreign objects can be prevented from blocking the captured image, and further the purpose of avoiding the influence of light and obstacles during detection is achieved.
[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0036] However, the above are only specific embodiments of the present utility model, and the scope of implementation of the present utility model cannot be limited thereby. Therefore, the replacement of equivalent components or equivalent changes and modifications made according to the scope of patent protection of the present utility model shall still fall within the scope covered by the claims of the present utility model.
Claims
1. A tower crane hook displacement detection device, comprising a frame (1), a lifting arm (2) and a hook (3), characterized in that: A sliding seat (4) is installed at the lower end of the lifting arm (2), a winder (5) is installed at the lower end of the sliding seat (4), a hook (3) is arranged on the lower side of the winder (5), a mounting cross plate (6) is fixedly connected to the front side of the sliding seat (4), a camera (7) is installed at the upper end of the mounting cross plate (6), a cylinder (13) located outside the camera (7) is fixedly connected to the upper end of the mounting cross plate (6), a fill light ring (9) located above the camera (7) is arranged inside the cylinder (13), a pointing rod (14) located above the fill light ring (9) is fixedly connected inside the cylinder (13), a horizontal bar (10) is arranged on the front side of the lifting arm (2), and a scale line (12) is arranged at the lower end of the horizontal bar (10).
2. A tower crane hook displacement detection device according to claim 1, characterized in that: The inner wall of the cylinder (13) is fixedly connected with a mounting ring (8), and the fill light ring (9) is fixedly connected to the mounting ring (8).
3. A tower crane hook displacement detection device according to claim 1, characterized in that: The front end of the lifting arm (2) is fixedly connected to two mounting vertical plates (11) distributed on the left and right, and the horizontal bar (10) is fixedly connected between the two mounting vertical plates (11).
4. A tower crane hook displacement detection device according to claim 1, characterized in that: The horizontal bar (10) and the lifting arm (2) are parallel to each other.
5. The tower crane hook displacement detection device according to claim 1, characterized in that: The pointing rod (14) and the hook (3) are located in the same vertical line.
6. A tower crane hook displacement detection device according to claim 1, characterized in that: A gap is left between the cylinder (13) and the horizontal bar (10).