Telescopic tower crane device and method

Abstract

The invention belongs to the field of tower cranes, and particularly relates to a telescopic tower crane device and method. A telescopic tower crane device comprises a tower body, a cargo boom, a balance arm, a balancing weight and a hoisting mechanism. The tower body is vertically arranged and used for supporting the overall height. The cargo boom is mounted at the upper end of the tower body, and the cargo boom is counterweighted into a telescopic structure; the balance arm is mounted at the upper end of the tower body, and the balance arm and the cargo boom are configured into a horizontal straight line; the balance arm is counterweighted into a telescopic structure; the balancing weight is configured to be capable of synchronously stretching out and drawing back along with the balance arm. The hoisting mechanism is configured to be capable of walking along the cargo boom. According to the telescopic tower crane device, the cargo boom and the balance arm are designed to be of telescopic structures, the gravity centers of the cargo boom and the balance arm can be kept balanced all the time when the telescopic tower crane device faces hoisted objects with different weights by adjusting the lengths of the cargo boom and the balance arm respectively, the stability is enhanced, and the safety risk is reduced; and the length of the cargo boom can be adjusted according to the sizes of different working spaces, so that the adaptability is improved.

Description

Technical Field

[0001] The present invention belongs to the field of tower cranes, and in particular relates to a telescopic tower crane device and method. Background Art

[0002] With the continuous advancement of modern construction technology, tower cranes, as core lifting equipment on construction sites, are facing increasing demands for performance improvement and innovation, which are key to driving the industry's development. The rapid development of urban construction has led to an increasing number of high-rise buildings and complex structures, placing higher demands on the flexibility and adaptability of tower cranes. Traditional tower crane designs typically feature fixed boom lengths and counterweights, resulting in unstable operation, increasing operational complexity and safety risks. Furthermore, the fixed boom length limits the scope of construction. Summary of the Invention

[0003] The present application provides a telescopic tower crane device and method, aiming to solve at least one of the above-mentioned technical problems.

[0004] In one aspect, an embodiment of the present application provides a telescopic tower crane device, characterized by comprising:

[0005] A tower body, which is arranged upright to support the overall height;

[0006] A jib, the jib being mounted on the upper end of the tower body, the jib being arranged horizontally, and the jib being counterweighted into a telescopic structure;

[0007] A balancing arm is installed at the upper end of the tower body, the balancing arm is arranged horizontally, and the balancing arm and the lifting arm are configured to form a horizontal straight line; the balancing arm is counterweighted to form a telescopic structure;

[0008] a counterweight block, the counterweight block being mounted on the movable end of the balancing arm and being configured to be capable of telescopic movement synchronously with the balancing arm;

[0009] The lifting mechanism is suspended from the boom and is configured to be able to move along the boom.

[0010] The above-mentioned telescopic tower crane device mainly includes a tower body, a crane arm and a balance arm. The crane arm and the balance arm 30 are designed to be a telescopic structure. By adjusting the length of the crane arm and the balance arm respectively, the center of gravity of the crane arm and the balance arm can always be kept balanced when facing objects of different weights, thereby enhancing stability and reducing safety risks; and the length of the crane arm can be adjusted according to the size of different working spaces to increase adaptability.

[0011] In the technical solution of one embodiment, the telescopic tower crane device further includes an intelligent control system, which is electrically connected to the lifting arm and the balancing arm and is used to control the telescopic movement of the lifting arm and the balancing arm.

[0012] In the technical solution of one embodiment, a first distance sensor is installed on the counterweight block, and a second distance sensor is installed on the lifting mechanism. The first distance sensor and the second distance sensor are both electrically connected to the intelligent control system. The first distance sensor is used to measure the distance between the counterweight block and the tower body, and the second distance sensor measures the distance between the lifting mechanism and the tower body.

[0013] In the technical solution of one embodiment, a positioning sensor is installed on the lifting mechanism, and the positioning sensor is used to locate its projected position on the ground.

[0014] In a technical solution of an embodiment, the positioning sensor is an image sensor that takes images directly downward to obtain images of the hanging object.

[0015] In the technical solution of one embodiment, the lifting arm includes multiple telescopic sections, and hydraulic cylinders are connected between adjacent telescopic sections. The hydraulic cylinders are mainly controlled by a hydraulic control system, and the hydraulic control system is electrically connected to the intelligent control system.

[0016] In the technical solution of one embodiment, the lifting mechanism is mainly composed of a traveling trolley, a winch, a wire rope and a hook pulley group to realize the vertical lifting of the suspended object; the traveling trolley is suspended and installed on the track below the lifting arm, the winch is installed on the traveling trolley, and the wire rope connects the winch and the hook pulley group.

[0017] In the technical solution of one embodiment, the telescopic tower crane device further includes a control room, which is fixedly installed at the upper end of the tower body, and the intelligent control system is located in the control room.

[0018] Another embodiment of the present application provides a method for using a telescopic tower crane, characterized in that:

[0019] Input the weights F2 and F1 of the load and counterweight to the intelligent control system;

[0020] The lifting mechanism moves to the front end of the boom.

[0021] The intelligent control system controls the extension and retraction of the lifting arm until the lifting mechanism is located directly above the load; obtains the distance L2 between the lifting mechanism and the tower body through a second distance sensor and sends the obtained distance L2 to the intelligent control system;

[0022] The intelligent control system controls the extension and retraction of the balancing arm, and obtains the real-time distance L1 between the counterweight block and the tower body through the first distance sensor and sends it to the intelligent control system; the intelligent control system performs calculations, and when L1 satisfies the formula F1*L1=F2*L2, the balancing arm stops extending and retracting;

[0023] Control the lifting mechanism to start lifting the load.

[0024] In the technical solution of one embodiment, the positioning sensor is an image sensor, which takes images directly downward to obtain images of the suspended object; during the extension and retraction of the crane arm, the image sensor continuously takes images downward and sends them to the intelligent control system; the intelligent control system performs image recognition, and when it is recognized that the suspended object in the image is located at the center of the image, it controls the crane arm to stop the extension and retraction movement to complete the positioning.

[0025] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings in this application are used to illustrate preferred embodiments to facilitate a person skilled in the art to clearly understand various other advantages and benefits, and are not to be considered as limiting the present application. In addition, the same reference numerals are used throughout the drawings to represent the same components.

[0027] Figure 1 Schematic diagram of a telescopic tower crane device in one embodiment of the present application.

[0028] Figure 2 This is a schematic diagram of a telescopic tower crane device (without a trolley) in one embodiment of the present application.

[0029] Figure 3 Schematic diagram of a crane arm in one embodiment of the present application.

[0030] Figure 4 This is a schematic exploded view of a crane arm in one embodiment of the present application.

[0031] Figure 5 This is a schematic diagram of a crane arm after retraction in one embodiment of the present application.

[0032] Description of the accompanying drawings: tower body 10, lifting arm 20, telescopic section 21, balancing arm 30, counterweight 40, first distance sensor 41, lifting mechanism 50, second distance sensor 51, positioning sensor 52, control room 60. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present application, not all of them. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] In the description of the embodiments of the present application, “multiple” means two or more (including two), unless otherwise clearly and specifically defined.

[0036] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0037] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0038] See also Figure 1As shown, one embodiment of the present application provides a telescopic tower crane device, which mainly includes a tower body 10 and a boom. The tower body 10 is arranged upright to support the overall height, and the boom is installed on the upper part of the tower body 10. The boom includes a lifting arm 20 and a balancing arm 30. The lifting arm 20 and the balancing arm 30 are arranged horizontally together to form a horizontal straight line. The lifting arm 20 and the balancing arm 30 are both counterweighted to form a telescopic structure. A counterweight block 40 is installed at the movable end of the balancing arm 30, and the counterweight block 40 can move synchronously with the balancing arm 30. A lifting mechanism 50 is installed on the lifting arm 20, and the lifting mechanism 50 can move along the length direction of the lifting arm 20. The telescopic tower crane device is designed to have a telescopic structure in which the boom 20 and the balance arm 30 are designed. By adjusting the lengths of the boom 20 and the balance arm 30 respectively, the center of gravity of the boom 20 and the balance arm 30 can always be kept balanced when facing objects of different weights, thereby enhancing stability and reducing safety risks. In addition, the length of the boom 20 can be adjusted according to different sizes of workspaces to increase its adaptability.

[0039] Specifically, see Figure 1 As shown, the telescopic tower crane device generally includes a control room 60 for controlling the entire telescopic tower crane device. The control room 60 is fixedly installed at the upper end of the tower body 10 and is located below the boom, where the operator has a better field of view.

[0040] Specifically, the lifting mechanism 50 generally consists of a trolley, a winch, a wire rope, and a hook and pulley assembly (not shown in the figure), which enables the vertical lifting of the load. The trolley is suspended on a track below the boom 20, the winch is mounted on the trolley, and the wire rope connects the winch and the hook and pulley assembly. The above structure is only one of many lifting mechanisms 50. Any mechanism that can perform similar functions can be used in this application, and therefore the above structure should not be used to limit this application.

[0041] In some embodiments, the telescopic tower crane device also includes an intelligent control system, which is electrically connected to the lifting arm 20 and the balancing arm 30 and is used to control the telescopic movement of the lifting arm 20 and the balancing arm 30. The intelligent control system can achieve precise automatic control of the lifting arm 20 and the balancing arm 30.

[0042] Specifically, the lifting arm 20 and the balance arm 30 in this embodiment are electrically controlled telescopic structures. If an electric or hydraulic drive system is used, it must have the characteristics of high efficiency, low noise and easy maintenance, and provide reliable power for the extension and retraction of the boom. Examples are not given here one by one.

[0043] Specifically, one specific implementation method of this embodiment is to install (integrate) the intelligent control system in the control room 60, so that operators can operate together in the control room 60. Of course, the intelligent control system can also be installed in other places, such as a machine room, etc., which are not listed here one by one.

[0044] See also Figure 1 As shown, in some embodiments, a first distance sensor 41 is installed on the counterweight 40, and a second distance sensor 51 is installed on the lifting mechanism 50. The first distance sensor 41 and the second distance sensor 51 are both electrically connected to the intelligent control system. The first distance sensor 41 is used to measure the distance between the counterweight 40 and the tower body 10, and the second distance sensor 51 is used to measure the distance between the lifting mechanism 50 and the tower body 10. The first distance sensor 41 and the second distance sensor 51 both send the collected distance information to the intelligent control system, which then uses technology to determine the movement of the balance arm 30 to maintain the center of gravity balance of the telescopic tower crane.

[0045] See also Figure 1 As shown, in a further embodiment, the lifting mechanism 50 is further equipped with a positioning sensor 52 for locating its projected position on the ground. The positioning sensor 52 automatically determines the arm length of the boom 20 by positioning the lifting mechanism 50 directly above the load. This eliminates the need for manual positioning and measurement, reducing the risks and errors of manual operation.

[0046] Specifically, the positioning sensor 52 can be an image sensor (such as an industrial camera, a video camera, or other sensor capable of capturing images), with its image capturing direction facing downward to capture an image of the suspended object. When the intelligent control system recognizes that the suspended object is located at the center of the image, it indicates that the lifting mechanism 50 is positioned directly above the suspended object.

[0047] It can be understood that the image sensor is only one of the many positioning sensors 52. As long as it is a device that can realize the function of positioning the lifting mechanism 50, it should belong to the positioning sensor 52 defined in this embodiment. The above specific implementation method should not be used as the only limitation on the positioning sensor 52.

[0048] The above-described embodiment achieves autonomous boom operation by integrating an intelligent control system and sensor technology. This allows the telescopic tower crane to automatically adjust the boom length according to pre-set programs or operator instructions, thus completing complex adjustment tasks. Autonomous operation technology not only improves work efficiency but also reduces the risks and errors associated with manual operation.

[0049] See also Figure 3 、 4As shown in Figure 5, in some embodiments, the boom 20 includes a plurality of telescopic joints 21, and hydraulic cylinders (not shown in the figure) are connected between adjacent telescopic joints 21. The hydraulic cylinders are mainly controlled by a hydraulic control system, and the hydraulic control system is electrically connected to the intelligent control system. The hydraulic control system here adopts a common hydraulic control system on the market, which is powered by an electric motor and uses a hydraulic pump to convert mechanical energy into pressure to promote the flow of hydraulic oil, thereby controlling the movement of the hydraulic cylinder. Specifically, the hydraulic control system changes the flow direction of the hydraulic oil by controlling various valves (the intelligent control system controls the hydraulic control system), thereby driving the hydraulic cylinder to perform different strokes to meet the needs of various equipment.

[0050] See also Figure 1-5 As shown, another embodiment of the present application provides a method for using the telescopic tower crane device based on the above embodiment, which mainly includes two steps: debugging before use and lifting operation.

[0051] S1. Debugging before use:

[0052] The weights F2 and F1 of the hanging object and the counterweight 40 are manually input into the intelligent control system; or some common counterweight 40 weights and hanging object weights (such as floor slabs of different specifications, etc.) are entered into the intelligent control system in advance, and then the intelligent control system retrieves the corresponding weight information F1 and F2.

[0053] The lifting mechanism 50 is controlled to move to the front end of the boom 20 to position the length of the boom 20 .

[0054] The intelligent control system controls the extension and retraction of the lifting arm 20 until the lifting mechanism 50 is located directly above the hanging object (determined by the positioning sensor 52); the distance L2 between the lifting mechanism 50 and the tower body 10 is obtained by the second distance sensor 51 and sent to the intelligent control system.

[0055] The intelligent control system controls the extension and retraction of the balancing arm 30, and obtains the real-time distance L1 between the counterweight block 40 and the tower body 10 through the first distance sensor 41 and sends it to the intelligent control system; the intelligent control system performs calculations, and when L1 satisfies the formula F1*L1=F2*L2, the balancing arm 30 stops the extension and retraction movement.

[0056] S2. Lifting operation:

[0057] Control the lifting mechanism 50 to start lifting the load.

[0058] See also Figure 1As shown, in a further embodiment, the positioning sensor 52 is an image sensor, which takes images (shoots) directly downward to obtain images of the suspended object; during the extension and retraction of the crane arm 20, the image sensor continuously takes images downward and sends them to the intelligent control system; the intelligent control system performs image recognition, and when it is recognized that the suspended object in the image is located at the center of the image, the crane arm 20 is controlled to stop the extension and retraction movement to complete the positioning.

[0059] In summary, the telescopic tower crane device and its use method provided in the embodiment of the present application include the following points:

[0060] Beneficial effects:

[0061] 1. Autonomous Operation

[0062] By integrating advanced control systems and sensor technology, autonomous boom operation is achieved. This allows the tower crane to automatically adjust the boom length according to pre-set programs or operator instructions, thus completing complex commissioning or lifting tasks. Autonomous operation not only improves work efficiency but also reduces the risks and errors of manual operation.

[0063] 2. Telescopic boom design

[0064] The telescopic boom can be flexibly adjusted in length to accommodate lifting operations at different heights and distances. Furthermore, the telescopic boom achieves a balanced center of gravity by adjusting the length of the lifting arm 20 and the counter-arm 30, providing greater stability and ensuring balance and safety during the lifting process.

[0065] 3. Intelligent control system

[0066] The intelligent control system integrates multiple sensors to monitor the status of the tower crane in real time and automatically adjust the operating strategy based on the monitoring information, further improving the reliability and safety of the crane.

[0067] 4. High adaptability and flexibility

[0068] With its autonomous operation and telescopic boom capabilities, the tower crane provided by this invention is adaptable to a variety of complex working environments. Whether in confined spaces or high above, it can flexibly complete lifting tasks. Furthermore, its intelligent control system enables the crane to be quickly adjusted and optimized to meet diverse work requirements.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent replacements for some or all of the technical features therein; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no contradiction or conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A telescopic tower crane device, characterized in that: include: A tower body (10), wherein the tower body (10) is arranged upright and is used to support the overall height; A lifting arm (20), the lifting arm (20) is installed at the upper end of the tower body (10), the lifting arm (20) is arranged horizontally, and the lifting arm (20) is counterweighted to form a telescopic structure; A balancing arm (30), the balancing arm (30) being mounted on the upper end of the tower body (10), the balancing arm (30) being arranged horizontally, the balancing arm (30) and the lifting arm (20) being arranged to form a horizontal straight line; the balancing arm (30) being counterweighted to form a telescopic structure; a counterweight (40), the counterweight (40) being mounted on the movable end of the balancing arm (30) and configured to be capable of synchronous telescopic movement with the balancing arm (30); A lifting mechanism (50) is suspended from the boom (20) and is configured to be able to move along the boom (20).

2. The telescopic tower crane device according to claim 1, characterized in that: The telescopic tower crane device further comprises an intelligent control system, which is electrically connected to the lifting arm (20) and the balancing arm (30) and is used to control the telescopic movement of the lifting arm (20) and the balancing arm (30).

3. The telescopic tower crane device according to claim 2, characterized in that: A first distance sensor (41) is installed on the counterweight (40), and a second distance sensor (51) is installed on the lifting mechanism (50). The first distance sensor (41) and the second distance sensor (51) are both electrically connected to the intelligent control system. The first distance sensor (41) is used to measure the distance between the counterweight (40) and the tower body (10), and the second distance sensor (51) is used to measure the distance between the lifting mechanism (50) and the tower body (10).

4. The telescopic tower crane device according to claim 2 or 3, characterized in that: A positioning sensor (52) is installed on the lifting mechanism (50), and the positioning sensor (52) is used to locate its projection position on the ground.

5. The telescopic tower crane device according to claim 4, characterized in that: The positioning sensor (52) is an image sensor that takes an image directly downward and is used to take an image of the hanging object.

6. The telescopic tower crane device according to claim 2, characterized in that: The lifting arm (20) comprises a plurality of telescopic sections (21), and hydraulic cylinders are connected between adjacent telescopic sections (21). The hydraulic cylinders are mainly controlled by a hydraulic control system, and the hydraulic control system is electrically connected to the intelligent control system.

7. The telescopic tower crane according to claim 1, characterized in that: The lifting mechanism (50) is mainly composed of a traveling trolley, a hoist, a steel wire rope and a hook pulley block, which realizes the vertical lifting of the hanging object; the traveling trolley is suspended and installed on the track below the lifting arm (20), the hoist is installed on the traveling trolley, and the steel wire rope connects the hoist and the hook pulley block.

8. The telescopic tower crane device according to claim 2, characterized in that: The telescopic tower crane device further comprises a control room (60), wherein the control room (60) is fixedly mounted on the upper end of the tower body (10), and the intelligent control system is located in the control room (60).

9. A method for using a telescopic tower crane, characterized in that: Inputting the weights F2 and F1 of the hanging object and the counterweight (40) into the intelligent control system; The lifting mechanism (50) moves to the front end of the lifting arm (20). The intelligent control system controls the extension and retraction of the lifting arm (20) until the lifting mechanism (50) is located directly above the hanging object; obtains the distance L2 between the lifting mechanism (50) and the tower body (10) through a second distance sensor (51), and sends the distance L2 to the intelligent control system; The intelligent control system controls the extension and retraction of the balancing arm (30), and obtains the real-time distance L1 between the counterweight (40) and the tower body (10) through a first distance sensor (41), and sends the real-time distance L1 to the intelligent control system; the intelligent control system performs calculations, and when L1 satisfies the formula F1*L1=F2*L2, the balancing arm (30) stops the extension and retraction movement; The lifting mechanism (50) is controlled to start lifting the object.

10. The method for using the telescopic tower crane according to claim 9, wherein: The positioning sensor (52) is an image sensor that takes images directly downward to obtain images of the suspended object. During the extension and retraction of the crane arm (20), the image sensor continuously takes downward images and sends them to the intelligent control system. The intelligent control system performs image recognition and, when it is recognized that the suspended object in the image is located at the center of the image, controls the crane arm (20) to stop the extension and retraction movement, thereby completing the positioning.

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