Tower crane jacking lug self-sensing device

Abstract

The utility model discloses a tower crane jacking lug self-sensing device, which relates to the technical field of cranes, and comprises a standard section, a sleeve frame is sleeved on the standard section, the sleeve frame is connected with a plurality of main oil cylinders through pin shafts, the other ends of the plurality of main oil cylinders are connected with a jacking cross beam through pin shafts, a position switch is arranged on the jacking cross beam, and the position switch is arranged on the position switch. The position switches are electrically connected with a display screen and comprise the position switches K0 and the position switches K1, the two position switches K0 are installed on the left side and the right side of the top end of the jacking cross beam respectively, and the two position switches K1 are installed on jacking lugs at the left end and the right end of the jacking cross beam respectively. A display screen, a jacking manual valve and a supporting rod are installed on the outer wall of the sleeve frame, the side, close to the main oil cylinder, of the supporting rod is connected with an auxiliary oil cylinder through a pin shaft, and the other end of the auxiliary oil cylinder is connected with the main oil cylinder through a pin shaft. According to the device, the state of the main oil cylinder and the in-place condition of the jacking lug are accurately judged through the position switch, and potential safety hazards caused by inaccurate manual observation are effectively avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of cranes, specifically a self-sensing device for tower crane lifting lugs. Background Technology

[0002] Tower crane jacking is a crucial operation, and its safety is paramount. If the jacking lugs are not fully engaged in the standard section's footplate slot, they may detach from the footplate under the crane's weight, potentially causing the tower to collapse. Currently, relying on manual inspection to ensure the jacking lugs are fully in place during tower crane jacking presents certain safety hazards. This is especially true when using long-stroke hydraulic cylinders for jacking tower crane sections, as the jacking lugs are far from the operator's view, making manual inspection highly uncertain. In such cases, ensuring the safety of the jacking lugs often requires additional manpower, which also impacts jacking efficiency. Utility Model Content

[0003] To address the aforementioned problems, specifically those raised in the background section, this invention proposes a self-sensing device for tower crane jacking lugs. The purpose is to monitor the position of the jacking lugs via several position switches and transmit information through a display screen, enabling automatic sensing of whether the jacking lugs are fully in place. This not only improves jacking safety but also significantly increases jacking efficiency. The device includes a standard section with a sleeve mounted on it. Several main hydraulic cylinders are connected to the sleeve via pins. The other ends of each main hydraulic cylinder are connected to a jacking beam via pins. Position switches are installed on the jacking beam and electrically connected to a display screen. Each position switch includes position switches K0 and K1. Two position switches K0 are respectively installed on the left and right sides of the top of the jacking beam, and two position switches K1 are respectively installed on the jacking lugs at the left and right ends of the jacking beam. A display screen, a manual jacking valve, and a support rod are installed on the outer wall of the sleeve. An auxiliary hydraulic cylinder is connected to the support rod near the main hydraulic cylinder via a pin, and the other end of the auxiliary hydraulic cylinder is connected to a main hydraulic cylinder via a pin.

[0004] A further feature of this invention is that the position switch includes, but is not limited to, photoelectric switches and limit switches.

[0005] A further feature of this invention is that the position switch includes a switch body, which is fixedly installed on the mounting plate of the lifting beam by a locking nut. One end of the switch body is provided with a connecting wire, and the other end of the switch body is provided with a sensing surface.

[0006] A further feature of this invention is that the display screen includes a housing, a high-brightness display screen is installed on the inner wall of the housing, a wiring port is provided at the bottom of the housing, and a sound output port is provided at the top of the housing.

[0007] A further feature of this invention is that the lifting manual valve is connected to a main oil cylinder and an auxiliary oil cylinder.

[0008] A further feature of this invention is that the standard section is provided with a plurality of standard section pedals.

[0009] The beneficial technical effects of this invention are as follows: This device accurately determines the status of the main hydraulic cylinder and the positioning of the lifting lugs through position switches, effectively avoiding safety hazards caused by inaccurate human observation. Especially in tower crane lifting sections with long-stroke hydraulic cylinders, it solves the problem of difficulty in accurate judgment due to the distance of the lifting lugs from the human eye, eliminating the need for additional manpower for observation and improving lifting efficiency. Simultaneously, the auxiliary hydraulic cylinder enhances the flexibility and reliability of the lifting system, and the rational design of the position switches and the multi-functional display screen jointly ensure the safety and stability of the tower crane lifting process. Attached Figure Description

[0010] Figure 1 A schematic diagram of the structure of this utility model is shown.

[0011] Figure 2 A schematic diagram of the position switch structure is shown.

[0012] Figure 3 A schematic diagram of the Bluetooth voice-controlled display screen structure is shown.

[0013] Figure 4 A schematic diagram of the position switch and the lifting beam installation is shown.

[0014] Figure 5 A schematic diagram showing the lifting lug fully in place is shown.

[0015] Reference numerals: 1. Sleeve, 2. Main cylinder, 3. Standard section, 4. Display screen, 5. Lifting manual valve, 6. Auxiliary cylinder, 7. Position switch K0, 8. Position switch K1, 9. Lifting beam, 10. Standard section pedal, 11. Lifting lug, 12. External speaker, 13. Housing, 14. High-brightness display screen, 15. Wiring port, 16. Connecting wire, 17. Switch body, 18. Locking nut, 19. Mounting plate, 20. Sensing surface, 21. Support rod. Detailed Implementation

[0016] The following is a reference to the appendix. Figure 1-5 The preferred embodiments of this utility model are described below. Those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this utility model and are not intended to limit the scope of protection of this utility model.

[0017] This utility model proposes a self-sensing device for tower crane jacking lugs, including a standard section 3. The standard section 3 serves as the basic support structure for the entire jacking system, providing a track for the installation and operation of the frame 1. Its stable structural characteristics ensure the reliability of the entire jacking process.

[0018] A sleeve 1 is fitted onto the standard section 3. The sleeve 1 is fitted onto the standard section 3 and serves to connect and support other components, providing a fixing and support point for the main hydraulic cylinder 2, so that the main hydraulic cylinder 2 can stably perform the lifting function.

[0019] The frame 1 is connected to several main hydraulic cylinders 2 via pins, which are the main power source of the lifting system. Through telescopic movement, hydraulic power is used to push the lifting beam 9 up or down, realizing the lifting operation of the upper structure. Both the frame 1 and the lifting beam 9 are connected to each other via pins, ensuring the flexibility and reliability of the connection, and enabling lifting operations at different angles and positions.

[0020] The other end of each of the main hydraulic cylinders 2 is connected to a lifting beam 9 via a pin. The lifting beam 9 acts as the target of the main hydraulic cylinders 2, transmitting the lifting force provided by the main hydraulic cylinders 2 to the structure above.

[0021] A position switch is installed on the lifting beam 9 to provide position information feedback to the system, ensuring the accuracy and safety of the lifting process. The position switch is electrically connected to the display screen 4, which receives electrical signals from the position switch and displays the working status information of the lifting system. When the position switch is activated, it issues a warning message or a "lifting ear in position" message, providing intuitive operation guidance to the operators and ensuring the safety and accuracy of the lifting process.

[0022] The position switches include position switch K07 and position switch K18. The two position switches K07 are respectively installed on the left and right sides of the top of the lifting beam 9, and are used to monitor the lifting status of the main hydraulic cylinder 2. When K07 is not activated, it indicates that the main hydraulic cylinder 2 is in a slow-moving state, independently driving the lifting beam 9; when K07 is activated, it indicates that the main hydraulic cylinder 2 is in a loaded lifting action, providing early warning information to the operator.

[0023] Two position switches K18 are installed on the lifting lugs 11 at the left and right ends of the lifting beam 9, respectively, to monitor the positioning status of the lifting lugs 11. When K18 does not activate, it indicates that the lifting lug 11 is not fully in place; when K18 activates, it indicates that the lifting lug 11 is fully in place, and the display screen 4 will display the message "Lifting lug in place", allowing the operator to continue the loading and lifting operation.

[0024] When position switch K07 is not activated, it indicates that the main cylinder 2 is in the state of independently driving the lifting beam 9, that is, the main cylinder 2 is in a slow-moving state, the risk is small, and the display screen 4 has no warning information; when position switch K07 is activated, it indicates that the main cylinder 2 is in the loading lifting action, and the display screen 4 issues a warning information.

[0025] After position switch K07 is activated, position switch K18 is monitored. If position switch K18 is not activated, it means that lifting ear 11 is not fully in place. If position switch K18 is activated, it means that lifting ear 11 is fully in place. At this time, display screen 4 will display the message "Lifting ear in place". At this time, the operator can continue to carry out loading and lifting work.

[0026] A display screen 4, a manual lifting valve 5, and a support rod 21 are installed on the outer wall of the frame 1. The support rod 21 serves as the mounting support point for the auxiliary hydraulic cylinder 6, connecting the auxiliary hydraulic cylinder 6 and the frame 1, providing a stable fixed position for the auxiliary hydraulic cylinder 6, and ensuring that the auxiliary hydraulic cylinder 6 can function effectively during operation. The auxiliary hydraulic cylinder 6 is connected to the support rod 21 near the main hydraulic cylinder 2 via a pin, and the other end of the auxiliary hydraulic cylinder 6 is connected to the main hydraulic cylinder 2 via a pin. The auxiliary hydraulic cylinder 6 assists the main hydraulic cylinder 2 in lifting operations. Connected to the support rod 21 and the main hydraulic cylinder 2 via a pin, it can provide additional power or adjust the position of the main hydraulic cylinder 2 during lifting, ensuring a smoother and more accurate lifting process, and improving the flexibility and reliability of the lifting system.

[0027] Position switches include, but are not limited to, photoelectric switches and limit switches, with photoelectric switches being preferred. Position switches are often equipped with protective covers to prevent impacts and provide waterproofing. Figure 2 As shown, the position switch includes a switch body 17, which is fixedly mounted on the mounting plate 19 of the lifting beam 9 by a locking nut 18. One end of the switch body 17 is equipped with a connecting wire 16 for connecting the position switch to other electrical equipment such as the display screen 4, transmitting position and power signals. This allows the position switch to promptly transmit detected position information to the display screen 4 so that operators can understand the system's operating status. The other end of the switch body 17 is equipped with a sensing surface 20, which is the key part of the position switch for detecting position changes.

[0028] like Figure 5As shown, the sensing surface 20 of position switch K07 is set relative to the standard section 3. When the main hydraulic cylinder 2 performs a lifting action, the lifting status of the main hydraulic cylinder 2 is determined by detecting the positional change of the sensing surface 20 of position switch K07 relative to the standard section 3, providing crucial positional information feedback for the entire lifting system. The sensing surface 20 of position switch K18 is set relative to the standard section pedal 10, used to detect the relative position of the lifting lug 11 and the standard section pedal 10, determining whether the lifting lug 11 is fully in place. The specific orientation of the sensing surface 20 ensures the accuracy and specificity of position detection.

[0029] The display screen 4 includes a housing 13, on the inner wall of which is installed a high-brightness display screen 14, the core display component of the display screen 4. Its high-brightness design ensures clear visibility even in sunlight. It converts electrical signals from sensors such as position switches into visualized images and text information, displaying various status parameters of the lifting system to the operator, such as position information and warning messages, facilitating real-time monitoring of system operation. A wiring port 15 is located at the bottom of the housing 13 for connecting the display screen 4 to other electrical equipment, such as position switches and power supplies. Through the wiring port 15, the display screen 4 can receive signals from the position switches and display them. It can also be connected to a power source to provide the necessary power for operation. An external sound outlet 12 is located at the top of the housing 13 to emit audible prompts when needed, such as warning sounds and operation prompts. Combined with the high-brightness display screen 14, this provides operators with a more comprehensive information feedback method, ensuring that operators can promptly notice important changes in the system's status, improving operational safety and accuracy.

[0030] The lifting manual valve 5 is connected to the main hydraulic cylinder 2 and the auxiliary hydraulic cylinder 6. The lifting manual valve 5 has at least two handles, which are manually controlled by the operator. Different handles control the actions of the main hydraulic cylinder 2 and the auxiliary hydraulic cylinder 6 respectively. The operation of the handles can precisely control each stage of the lifting process, such as controlling the main hydraulic cylinder 2 to adjust the height of the lifting lug 11 and controlling the auxiliary hydraulic cylinder 6 to move the lifting beam 9 closer to or away from the standard section 3.

[0031] Several standard section pedals 10 are provided on the outer wall of section 3, providing support points for the lifting ears 11 during the lifting process. When the lifting ears 11 enter the grooves of the standard section pedals 10 during descent, the vertical stability of the lifting structure is ensured. For example, during the ascent or descent of the lifting equipment, the standard section pedals 10 act like steps, allowing the lifting ears 11 to land accurately on them, preventing the lifting structure from shifting or swaying, and ensuring the vertical accuracy of the entire lifting system. The sensing surface 20 of the position switch K18 is parallel to the standard section pedals 10, and the position of the standard section pedals 10 serves as an important reference for determining whether the lifting ears 11 are fully in place. During the lifting operation, the operator needs to use the state of the position switch K18 to determine whether the lifting ears 11 have been accurately placed on the standard section pedals 10. This is crucial for the precise control and safety of the entire lifting process, because only when the lifting ears 11 are fully in place can subsequent loading and lifting work continue, avoiding safety hazards caused by inaccurate positioning.

[0032] When position switch K07 is not activated, the lifting beam 9 does not approach the standard section 3. At this time, the main oil cylinder 2 is in a slow lifting action under no-load, and there is no need to monitor the position of the lifting lug 11.

[0033] During the formal jacking process, first operate the jacking manual valve 5 handle to make the jacking lug 11 on the jacking beam 9 about 150mm higher than the standard section pedal 10; then operate the jacking manual valve 5 handle to extend the piston rod of the auxiliary cylinder 6. Under the action of the auxiliary cylinder 6, the jacking beam 9 slowly swings towards the standard section 3 until the jacking beam 9 is in contact with the standard section 3. At this time, the position switch K07 is triggered.

[0034] After both position switches K07 are activated, the control display screen 4 shows a warning message, and the sound output port 12 emits an alarm sound. A specially designed Bluetooth headset can also be connected to the display screen 4 to avoid noise interference with the alarm sound. Then, ensure that the lifting beam 9 and the standard section 3 remain in contact, and operate the lifting manual valve 5 handle to fully insert the lifting lug 11 into the slot of the standard section pedal 10. While the lifting beam 9 and standard section 3 remain in contact and the lifting lug 11 is not fully inserted into the slot of the standard section pedal 10, the display screen 4 remains in a warning state. Only when the lifting lug 11 is fully inserted into the slot of the standard section pedal 10 will both position switches K18 be activated. After both position switches K18 are activated, the control display screen 4 displays the text message "Lifting lug in place!" and emits an audio message. Only after the operator hears or observes the "Lifting lug in place!" message can the lifting operation continue; otherwise, the cause of the malfunction should be investigated as soon as possible.

[0035] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0036] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0039] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A self-sensing device for a tower crane jacking lug, comprising a standard section (3), wherein a sleeve (1) is fitted on the standard section (3), and the sleeve (1) is connected to a plurality of main hydraulic cylinders (2) via pins, and the other end of each of the plurality of main hydraulic cylinders (2) is connected to a jacking crossbeam (9) via pins, characterized in that: A position switch is installed on the lifting beam (9), and the position switch is electrically connected to the display screen (4). The position switch includes a position switch K0 (7) and a position switch K1 (8). The two position switches K0 (7) are respectively installed on the left and right sides of the top of the lifting beam (9), and the two position switches K1 (8) are respectively installed on the lifting ears (11) at the left and right ends of the lifting beam (9). The outer wall of the frame (1) is equipped with a display screen (4), a lifting manual valve (5) and a support rod (21). The support rod (21) is connected to an auxiliary cylinder (6) by a pin on one side near the main cylinder (2). The other end of the auxiliary cylinder (6) is connected to the main cylinder (2) by a pin.

2. The self-sensing device for tower crane jacking lugs according to claim 1, characterized in that: The position switch includes, but is not limited to, photoelectric switches and limit switches.

3. A self-sensing device for tower crane jacking lugs according to claim 1 or 2, characterized in that: The position switch includes a switch body (17), which is fixedly installed on the mounting plate (19) of the lifting beam (9) by a locking nut (18). One end of the switch body (17) is provided with a connecting wire (16), and the other end of the switch body (17) is provided with a sensing surface (20).

4. The self-sensing device for tower crane jacking lugs according to claim 1, characterized in that: The display screen (4) includes a housing (13), a high-brightness display screen (14) is installed on the inner wall of the housing (13), a wiring port (15) is opened at the bottom of the housing (13), and a sound output port (12) is opened at the top of the housing (13).

5. The self-sensing device for the tower crane jacking lug according to claim 1, characterized in that: The lifting manual valve (5) is connected to the main oil cylinder (2) and the auxiliary oil cylinder (6).

6. The self-sensing device for the tower crane jacking lug according to claim 1, characterized in that: The standard section (3) is provided with several standard section pedals (10).

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