Crane hook height detection system and crane
By designing a crane hook height detection system and using the collection sensor and controller to calculate and display the lifting height of the hook, the problem that traditional cranes cannot accurately judge the hook height is solved, and the lifting accuracy and working efficiency are improved.
Patent Information
- Application Number
- CN202420613439.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-27
AI Technical Summary
Traditional cranes cannot accurately determine the lifting height of the hook, resulting in inaccurate lifting position of the items.
A crane hook height detection system is designed, including a collection sensor, a controller and a display module. The sensor is collected to obtain the swing angle of the winch, the arm length and pitch angle of the telescopic boom. The controller calculates the lifting height of the hook based on this information and displays it in real time through the display module.
Accurate calculation and real-time display of the lifting height of the hook are achieved, avoiding the influence of the staff's subjective judgment and improving the crane's lifting accuracy and working efficiency.
Smart Images
Figure CN222556400U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of height detection, in particular to a crane hook height detection system and a crane. Background Art
[0002] A crane refers to a multi-action lifting machinery that vertically lifts and horizontally moves heavy objects within a certain range. It is also called an overhead crane, overhead crane or crane and is a material handling machinery.
[0003] In order to determine the lifting height of the hook, workers are usually required to make a visual estimate when using a traditional crane for lifting operations. However, it is impossible to accurately lift the specified object to the specified height in a short time only through visual estimation by workers. Utility Model Content
[0004] In view of this, the utility model provides a crane hook height detection system and a crane to solve the problem that the traditional crane cannot accurately judge the lifting height of the hook.
[0005] In a first aspect, the utility model provides a crane hook height detection system, comprising:
[0006] The data acquisition sensor is used to obtain the rotation angle of the winch, the arm length of the telescopic boom, and the pitch angle of the telescopic boom;
[0007] A controller, electrically connected to the acquisition sensor, calculates the lifting height of the hook based on the rotation angle and rotation radius of the winch and the arm length and pitch angle of the telescopic boom;
[0008] The display module is electrically connected to the controller and is used to display the lifting height of the hook.
[0009] Beneficial effect: The controller in the utility model can not only calculate the lifting height of the hook based on the information obtained by the collection sensor, but also enable the display module to display the lifting height of the hook in real time, so that the staff can intuitively obtain the lifting height information of the hook, avoiding the subjective judgment of the staff affecting the lifting operation process of the crane, and improving work efficiency.
[0010] In an optional embodiment, the acquisition sensor includes a first angle sensor, a second angle sensor and a length measurement sensor, the first angle sensor is arranged on the winch and electrically connected to the controller, and the first angle sensor is used to obtain the rotation angle of the winch; the second angle sensor and the length measurement sensor are arranged on the telescopic arm and electrically connected to the controller, the second angle sensor is used to obtain the pitch angle of the telescopic arm, and the length measurement sensor is used to obtain the arm length of the telescopic arm.
[0011] Beneficial effect: The utility model uses a first angle sensor, a second angle sensor and a length measurement sensor, so that the collection sensor can obtain the information of the rotation angle of the winch, the pitch angle of the telescopic boom and the arm length of the telescopic boom in real time and accurately under different operating conditions, so that the controller can accurately calculate the lifting height value of the hook and allow the crane to accurately lift the specified object to the specified height in a short time.
[0012] In an optional implementation, the first angle sensor is an encoder, and the encoder is coaxially connected to the winch via a coupling.
[0013] Beneficial effect: The utility model connects the encoder to the winch through a coupling, so that the encoder and the winch can keep rotating synchronously, so that the encoder can accurately record the rotation of the winch, ensuring the accuracy of the lifting height value of the hook displayed by the display module.
[0014] In an optional implementation, an encoder protection cover is provided outside the encoder.
[0015] Beneficial effect: The utility model can reduce the probability of the encoder being damaged and extend the service life of the encoder by arranging an encoder protection cover outside the encoder.
[0016] In an optional implementation, the second angle sensor and the length measurement sensor are electrically connected to the display module respectively.
[0017] Beneficial effects: The utility model electrically connects the second angle sensor and the length measurement sensor to the display module respectively, so that the staff can obtain the information of the pitch angle and the arm length of the telescopic arm in real time through the display module.
[0018] In an optional implementation, the second angle sensor is a tilt sensor, and the length measurement sensor is a pull-rope displacement sensor.
[0019] Beneficial effect: The utility model uses an inclination sensor and a length measurement sensor, which can, on the one hand, transmit accurate pitch angle and arm length information of the telescopic boom to the controller; on the other hand, it can enable workers to accurately understand the pitch angle and arm length information of the telescopic boom, thereby improving the safety of construction operations.
[0020] In an optional embodiment, the display module includes a display screen, the display screen is electrically connected to the controller, and the display screen is used to display the lifting height of the hook.
[0021] Beneficial effect: The utility model provides a display screen, which makes it easy for workers to intuitively understand the lifting height of the hook, so that the crane can complete the task of accurately lifting the designated objects to the designated height under the short-term operation of the workers.
[0022] In an optional implementation, the controller is connected to the acquisition sensor and the display module respectively via a CAN bus.
[0023] Beneficial effects: The utility model connects the controller with the acquisition sensor and the display module through the CAN bus. On the one hand, it can realize real-time transmission of data and improve the working efficiency of the crane hook height detection system; on the other hand, it can reduce the use of cables in the crane hook height detection system, simplify the structure of the crane hook height detection system itself, reduce the installation and maintenance costs of the crane hook height detection system, and improve the reliability of the crane hook height detection system.
[0024] In a second aspect, the utility model also provides a crane, comprising: the above-mentioned crane hook height detection system.
[0025] Beneficial effect: The utility model uses the above-mentioned crane hook height detection system to allow the staff to intuitively understand the lifting height information of the hook through the display module, avoiding the problem of inaccurate lifting position of items due to the subjective judgment of the hook position by the staff. In this way, the auxiliary work of the staff can be reduced, and the crane can smoothly complete the operation of specific requirements under the operation of the staff. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0027] Figure 1 A schematic diagram of a crane hook height detection system according to an embodiment of the utility model;
[0028] Figure 2 A schematic diagram of a display module in an embodiment of the present utility model;
[0029] Figure 3 This is a schematic diagram of the assembly of the encoder and the coupling in the embodiment of the utility model;
[0030] Figure 4 It is a schematic diagram of assembly of the encoder and the coupling from another perspective in the embodiment of the utility model;
[0031] Figure 5 It is a schematic assembly diagram of the encoder and the coupling from another perspective in the embodiment of the utility model;
[0032] Figure 6 This is a schematic diagram of the assembly of the encoder and the winch in the embodiment of the utility model;
[0033] Figure 7 It is a schematic diagram of the assembly of the encoder and the winch from another perspective in the embodiment of the utility model;
[0034] Figure 8 It is a schematic diagram of the assembly of the encoder and the winch from another perspective in the embodiment of the utility model;
[0035] Fig. 9 The utility model is a schematic structural diagram of a crane according to an embodiment of the utility model.
[0036] Description of reference numerals:
[0037] 1. Data acquisition sensor; 101. First angle sensor; 1011. Encoder; 1012. Coupling; 1013. Encoder mounting plate; 102. Second angle sensor; 103. Length measurement sensor; 2. Controller; 3. Display module; 301. Display screen; 4. Telescopic boom; 5. Winch; 6. Hook. DETAILED DESCRIPTION
[0038] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0039] Aiming at the problem that the traditional crane cannot accurately judge the lifting height of the hook, the utility model provides a crane hook height detection system and a crane.
[0040] Combine the following Figures 1 to 9 , describing an embodiment of the utility model.
[0041] According to an embodiment of the present utility model, on the one hand, as Figure 1 As shown, a crane hook height detection system is provided, including: a collection sensor 1, a controller 2 and a display module 3.
[0042] Specifically, the acquisition sensor 1 is used to obtain the rotation angle of the winch 5, the arm length of the telescopic arm 4 and the pitch angle of the telescopic arm 4; the controller 2 is electrically connected to the acquisition sensor 1, and calculates the lifting height of the hook 6 based on the rotation angle, rotation radius of the winch 5 and the arm length and pitch angle of the telescopic arm 4; the display module 3 is electrically connected to the controller 2, and is used to display the lifting height of the hook 6.
[0043] The controller 2 in the embodiment of the utility model can not only calculate the lifting height of the hook 6 based on the information obtained by the acquisition sensor 1, but also enable the display module 3 to display the lifting height of the hook 6 in real time, so that the staff can intuitively obtain the lifting height information of the hook 6, avoiding the subjective judgment of the staff affecting the lifting operation process of the crane, in this way, the operation of lifting the specified objects to the specified height in a short time is realized, the auxiliary work of the staff is reduced, and the work efficiency is improved.
[0044] It should be noted that the electrical connection in the embodiment of the utility model can be a wire harness connection or a wireless signal connection. The following is a description of the connection between the controller 2, the acquisition sensor 1 and the display module 3 in conjunction with a specific example:
[0045] In one example, the controller 2 is connected to the acquisition sensor 1 and the display module 3 respectively through the CAN bus (Controller Area Network). It can be understood that by connecting the controller 2 with the acquisition sensor 1 and the display module 3 through the CAN bus, on the one hand, the real-time transmission of data can be realized, and the working efficiency of the crane hook height detection system can be improved; on the other hand, the use of cables in the crane hook height detection system can be reduced, the structure of the crane hook height detection system can be simplified, the installation and maintenance costs of the crane hook height detection system can be reduced, and the reliability of the crane hook height detection system can be improved.
[0046] In another example, the controller 2 is connected to the acquisition sensor 1 and the display module 3 respectively through wireless signals. Compared with the wire harness connection, the wireless signal connection can not only further simplify the structure of the crane hook height detection system, but also allow the staff to flexibly set the acquisition sensor 1, the controller 2 and the display module 3 on the crane as needed.
[0047] According to one embodiment of the utility model, the acquisition sensor 1 includes a first angle sensor 101, a second angle sensor 102 and a length measurement sensor 103. The first angle sensor 101 is arranged on the winch 5 and is electrically connected to the controller 2. The first angle sensor 101 is used to obtain the rotation angle of the winch 5; the second angle sensor 102 and the length measurement sensor 103 are arranged on the telescopic arm 4 and are electrically connected to the controller 2. The second angle sensor 102 is used to obtain the pitch angle of the telescopic arm 4, and the length measurement sensor 103 is used to obtain the arm length of the telescopic arm 4.
[0048] The embodiment of the utility model uses the first angle sensor 101, the second angle sensor 102 and the length measurement sensor 103, so that the acquisition sensor 1 can obtain the information of the rotation angle of the winch 5, the pitch angle of the telescopic boom 4 and the arm length of the telescopic boom 4 in real time and accurately under different operating conditions, so that the controller 2 can accurately calculate the lifting height value of the hook 6 and allow the crane to accurately lift the specified object to the specified height in a short time.
[0049] It is understandable that different operating states refer to different arm lengths of the telescopic boom 4 in the crane, and / or different pitch angles of the telescopic boom 4. The pitch angle of the telescopic boom 4 refers to the angle formed between the telescopic boom 4 and the slewing platform of the crane.
[0050] For example, in one operating state, the arm length of the telescopic boom 4 is 20 meters, and the pitch angle of the telescopic boom 4 is 30 degrees; in another operating state, the arm length of the telescopic boom 4 is 30 meters, and the pitch angle of the telescopic boom 4 is 60 degrees; in yet another operating state, the arm length of the telescopic boom 4 is 32 meters, and the pitch angle of the telescopic boom 4 is 65 degrees.
[0051] According to one embodiment of the utility model, Figures 4 to 9 As shown, the first angle sensor 101 is an encoder 1011, which is located on one side of the hoist 5 and is coaxially connected to the hoist 5 through a coupling 1012 and an encoder mounting plate 1013. The embodiment of the utility model connects the encoder 1011 to the hoist 5 through the coupling 1012 and the encoder mounting plate 1013, so that the encoder 1011 and the hoist 5 can keep synchronous rotation, so that the encoder 1011 can accurately record the rotation of the hoist 5, ensuring the accuracy of the lifting height value of the hook 6 displayed by the display module 3.
[0052] It should be noted that the encoder 1011 in this embodiment is a rotary photoelectric encoder 1011 .
[0053] According to an embodiment of the present invention, an encoder protection cover is disposed outside the encoder 1011. By disposing the encoder protection cover outside the encoder 1011, the embodiment of the present invention can reduce the probability of the encoder 1011 being damaged and extend the service life of the encoder 1011.
[0054] According to an embodiment of the present invention, the second angle sensor 102 and the length measurement sensor 103 are electrically connected to the display module 3. The embodiment of the present invention facilitates the staff to obtain the pitch angle of the telescopic boom 4 and the arm length of the telescopic boom 4 in real time through the display module 3 by electrically connecting the second angle sensor 102 and the length measurement sensor 103 to the display module.
[0055] Furthermore, in a specific embodiment, the second angle sensor 102 is an inclination sensor, and the length measurement sensor 103 is a pull rope displacement sensor. The embodiment of the utility model uses an inclination sensor and a length measurement sensor, which can, on the one hand, transmit accurate pitch angle and arm length information of the telescopic boom to the controller; on the other hand, it can allow the staff to accurately understand the pitch angle and arm length information of the telescopic boom, thereby improving the safety of the construction work.
[0056] According to an embodiment of the present invention, the calculation information required by the controller 2 also includes the magnification of the hook 6. Based on the magnification of the hook 6, the controller 2 can calculate the lifting height of the hook 6 of the crane in a multi-magnification state. The controller in the embodiment of the present invention can accurately calculate the lifting height of the hook 6 of the crane in a multi-magnification state based on the magnification of the hook 6, thereby improving the safety and work efficiency of the crane during the lifting operation.
[0057] It should be noted that the ratio of the hook 6 in the embodiment of the utility model refers to the number of layers of the main flexible rope (such as a steel wire rope) on the crane after passing through the telescopic boom 4 and the pulley block on the hook 6. Exemplarily, the number of layers of the flexible rope on the crane can be but not limited to 1 layer, 2 layers and 3 layers, which can be adjusted according to actual work needs. Therefore, the crane hook height detection system in the embodiment of the utility model can not only accurately calculate the real-time lifting height of the hook 6 in the multi-ratio state, but also can feedback the real-time lifting height of the hook 6 in the single-ratio state.
[0058] According to one embodiment of the utility model, Figure 2As shown, the display module 3 includes a display screen 301, which is electrically connected to the controller 2, and is used to display the lifting height of the hook 6. The embodiment of the utility model is provided with the display screen 301, so that the staff can intuitively understand the lifting height of the hook 6, so that the crane can complete the task of accurately lifting the specified object to the specified height under the short-term operation of the staff.
[0059] According to an embodiment of the present utility model, on the other hand, Fig. 9 As shown, a crane is also provided, comprising: the above-mentioned crane hook height detection system.
[0060] The embodiment of the utility model uses the above-mentioned crane hook height detection system to allow the staff to intuitively understand the lifting height information of the hook 6 through the display module 3, thereby avoiding the problem of inaccurate lifting position of items due to the staff's subjective judgment of the position of the hook 6. In this way, the auxiliary work of the staff can be reduced, and the crane can smoothly complete the operation of specific requirements under the operation of the staff.
[0061] It should be noted that the crane in the embodiment of the utility model can be but is not limited to a truck crane.
[0062] The working principle of the crane hook height detection system in the embodiment of the utility model is as follows:
[0063] The hook 6 of the crane is set to the reset state of the whole system. The length measuring sensor 103 and the second angle sensor 102 will feed back the arm length L1 of the telescopic boom 4 and the pitch angle α of the telescopic boom 4 to the controller 2. At the same time, the staff will input the crane magnification n and the ground height H of the hinge point between the telescopic boom 4 and the slewing platform of the crane to the controller 2. The controller 2 can then calculate the wire rope extension length S0 on the winch 5:
[0064] S0=n*(L1*sin60+H)+L1(Formula 1)
[0065] During the operation of the crane, the winch 5 will drive the encoder 1011 to rotate, and the encoder 1011 will feed back the rotation angle θ (which can be a negative value) of the winch 5 to the controller 2 through the CAN bus; at the same time, the length measurement sensor 103 and the second angle sensor 102 will feed back the arm length L2 of the telescopic boom 4 and the pitch angle β of the telescopic boom 4 to the controller 2. If the lifting height of the hook 6 at this time is h, the extension length S1 of the wire rope on the winch 5 at this time is:
[0066] S1=n*(L2*sinβ+Hh)+L2(Formula 2)
[0067] According to the rotation radius r of the hoist 5 and the rotation angle θ of the hoist 5 fed back by the encoder 1011, the wire rope extension length ΔS in the current state relative to the reset state can be calculated as:
[0068] ΔS= S1- S0=θ*π*r / 180 (Formula 3)
[0069] Therefore, the lifting height h of the hook 6 can be calculated from the above three equations:
[0070] h= L2*sinβ-(ΔS+ S0- L2) / n (Formula 4)
[0071] It should be noted that, through calculation, the ground clearance H of the hinge point between the telescopic boom 4 and the slewing platform of the crane does not affect the result, and thus can be ignored in practical application.
[0072] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.
Claims
1. A crane hook height detection system, characterized in that: include: A collection sensor (1) is used to obtain the rotation angle of the winch (5), the arm length of the telescopic boom (4), and the pitch angle of the telescopic boom (4); A controller (2) is electrically connected to the acquisition sensor (1) and is used to calculate the lifting height of the hook (6) based on the rotation angle and rotation radius of the winch (5) and the arm length and pitch angle of the telescopic boom (4); The display module (3) is electrically connected to the controller (2) and is used to display the lifting height of the hook (6).
2. The crane hook height detection system according to claim 1, characterized in that: The acquisition sensor (1) comprises a first angle sensor (101), a second angle sensor (102) and a length measurement sensor (103); the first angle sensor (101) is arranged on the hoist (5) and is electrically connected to the controller (2); the first angle sensor (101) is used to obtain the rotation angle of the hoist (5); The second angle sensor (102) and the length measurement sensor (103) are arranged on the telescopic boom (4) and are electrically connected to the controller (2); the second angle sensor (102) is used to obtain the pitch angle of the telescopic boom (4); and the length measurement sensor (103) is used to obtain the arm length of the telescopic boom (4).
3. The crane hook height detection system according to claim 2, characterized in that: The first angle sensor (101) is an encoder (1011), and the encoder (1011) is coaxially connected to the winch (5) via a coupling (1012).
4. The crane hook height detection system according to claim 3, characterized in that: An encoder protection cover is arranged outside the encoder (1011).
5. The crane hook height detection system according to claim 2, characterized in that: The second angle sensor (102) and the length measurement sensor (103) are electrically connected to the display module (3) respectively.
6. The crane hook height detection system according to claim 3, characterized in that: The second angle sensor (102) is a tilt sensor, and the length measurement sensor (103) is a pull-wire displacement sensor.
7. The crane hook height detection system according to any one of claims 1 to 6, characterized in that: The display module (3) comprises a display screen (301), the display screen (301) is electrically connected to the controller (2), and the display screen (301) is used to display the lifting height of the hook (6).
8. The crane hook height detection system according to any one of claims 1 to 6, characterized in that: The controller (2) is connected to the acquisition sensor (1) and the display module (3) respectively via a CAN bus.
9. A crane, characterized in that: A crane hook height detection system comprising the system described in any one of claims 1 to 8.