An electrically powered cantilever

Abstract

The application provides an electric cantilever, and belongs to the technical field of cantilever equipment; comprising a lifting arm, a guide rail, a driving mechanism, a control panel, an emergency stop switch, a balance support leg, a counterweight loading structure, a head rotating mechanism, a speed difference device and a rotating locking switch; the driving mechanism is used for driving the lifting arm to lift along the guide rail, the control panel is integrated with control buttons, indicator lights and a limiting device, the balance support leg can adjust the height and support the equipment base, the counterweight loading structure is used for staggered arrangement of counterweights on the upper and lower layers, the head rotating mechanism realizes head rotation and locking through cooperation of the speed difference device and the rotating locking switch, and the emergency stop switch is used for emergency shutdown when the equipment is abnormal; through optimization of the structural design, the application realizes precise lifting and rotation control, improves the stability and safety of the equipment, and adapts to different operation scene requirements.

Description

Technical Field

[0001] This invention provides an electric cantilever, belonging to the technical field of cantilever equipment. Background Technology

[0002] Currently, most cantilever cranes on the market use manual or semi-manual drive, resulting in low operating efficiency and difficulty in achieving precise lifting and rotation control. Existing electric cantilever cranes generally suffer from unreasonable structural design and poor stability, especially during heavy-load operations, where the crane is prone to tilting due to a shift in the center of gravity, posing a safety hazard. Furthermore, most electric cantilever cranes have a single counterweight loading method, failing to flexibly adapt to the load requirements of different operating scenarios; the head rotation mechanism is cumbersome to operate, has insufficient locking reliability, and is prone to accidental rotation. In addition, existing equipment has a limited power supply method, unable to operate normally in scenarios without an external power source, and lacks a comprehensive safety protection mechanism, making it difficult to quickly stop the machine when malfunctions occur, further increasing operational risks.

[0003] In view of the shortcomings of the existing technology, there is an urgent need for an electric cantilever that is structurally reasonable, easy to operate, highly stable, safe and reliable, and highly adaptable, so as to solve the deficiencies of the existing technology. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing electric cantilever operation, such as low efficiency, poor stability, cumbersome operation, insufficient safety protection, and poor adaptability. It provides an electric cantilever that achieves precise lifting and rotation control through optimized structural design, thereby improving equipment stability and safety and adapting to the needs of different operating scenarios.

[0005] To address the aforementioned problems, the present invention proposes the following technical solution: an electric cantilever arm, comprising a lifting arm, a guide rail, a drive mechanism, a control panel, an emergency stop switch, a balance leg, a counterweight loading structure, a head rotation mechanism, a differential speed device, and a rotary locking switch; the drive mechanism drives the lifting arm to move up and down along the guide rail; the control panel integrates control buttons, indicator lights, and limit devices; the balance leg is height-adjustable and supports the equipment base; the counterweight loading structure arranges counterweights in staggered layers; the head rotation mechanism, through the differential speed device and the rotary locking switch, achieves head rotation and locking; and the emergency stop switch is used for emergency shutdown in case of equipment malfunction.

[0006] Furthermore, the balancing outriggers include four independently height-adjustable outriggers, with the bottom surfaces of the outriggers in close contact with the ground to ensure the equipment remains horizontally stable.

[0007] Furthermore, the counterweight loading structure uses an alternating stacking method in two layers to support the counterweight, which is loaded by a forklift.

[0008] Furthermore, the operation of the head rotation mechanism is as follows: quickly pull the differential speed device to lock it, pull the rotation locking switch without releasing it, then pull the differential speed device to rotate the head, and release the rotation locking switch to lock the head.

[0009] Furthermore, the lifting arm is equipped with a maximum limit point and a minimum limit point, and automatically stops lifting when the limit point is reached.

[0010] Furthermore, the drive mechanism is electrically driven, and the device supports both plug-in and battery-powered power supply methods. The battery-powered version is equipped with a removable battery and a dedicated charger.

[0011] Furthermore, this includes the following steps: S1. Pre-use inspection: Inspect the appearance of the equipment, control components, power supply and working environment, and ensure that operators wear safety protective equipment; S2. Power Connection and Start-up: Connect the power supply and confirm that the device has entered standby mode; S3. No-load test run: Deploy the outriggers and adjust them to stable support. Control the lifting arm to lift and lower it once under no-load using the remote control to check the lifting stability and the effectiveness of the limit device. S4. Counterweight loading: The counterweight blocks are arranged in two staggered layers on the equipment base; S5. Lifting Operation: The lifting arm is controlled by the remote control to rise to the target height and automatically stop. Before lowering, it is confirmed that there are no personnel or obstacles below, and then the lifting arm is controlled to descend to the target position. S6. Head rotation operation: Pull the differential speed device to lock, and operate the rotation locking switch and differential speed device to achieve head rotation and locking; S7. Operation completed: Lower the lifting arm to the lowest position, turn off the power, and lock the control panel.

[0012] Due to the adoption of the above technical solution, the beneficial effects of the electric cantilever of the present invention are as follows: 1. This invention uses an electrically driven drive mechanism, combined with a guide rail and lifting arm design, to achieve smooth and precise lifting of the lifting arm, which greatly improves work efficiency compared to manual or semi-manual drive methods. At the same time, the lifting arm is equipped with a limit device, which can automatically stop at the highest or lowest limit point to avoid equipment damage and improve work safety.

[0013] 2. The outriggers feature a design with four independently adjustable heights, allowing for flexible adjustment based on ground flatness to ensure the equipment remains level and stable. This effectively solves the problem of existing equipment tilting under heavy loads, improving the equipment's stability and operational reliability.

[0014] 3. The counterweight loading structure adopts a two-layer staggered stacking method, which can effectively lower the center of gravity of the equipment. Combined with the forklift loading method of the counterweight, it not only improves the stability of the equipment under heavy load, but also improves the convenience and efficiency of loading and unloading the counterweight, adapting to different load requirements.

[0015] 4. The head rotation mechanism achieves rotation and locking through the combination of a speed differential and a rotation locking switch. The operation process is simple, the locking is reliable, and it can effectively prevent accidental head rotation, thereby improving work safety and ease of operation.

[0016] 5. The equipment supports both plug-in and battery power supply to adapt to different operating scenarios. The removable battery design facilitates battery replacement and charging, ensuring continuous operation and improving the equipment's adaptability and flexibility.

[0017] 6. The equipment is equipped with an emergency stop switch and a complete control panel. The emergency stop switch can quickly stop the machine in case of abnormality. The control panel integrates control buttons, indicator lights and limit devices, which makes it easy for operators to monitor the operating status of the equipment in real time, making operation convenient and safe. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is an elevation view of an electric cantilever according to the present invention; Figure 2 This is an elevation view of an electrically operated cantilever retraction device according to the present invention; Figure 3 This is a partial elevation view of an electric cantilever according to the present invention; Figure 4 This is a partial perspective view of an electric cantilever according to the present invention.

[0019] In the picture: 1. Lifting arm; 2. Guide rail; 3. Balance outriggers; 4. Counterweight loading structure; 5. Head rotation mechanism. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] The technical background of this application fully explains the problems of the prior art, and there are no overarching or general issues. The following description of the invention and specific embodiments will specifically describe the problems that this application needs to solve, clarify the technical problems that the technical solution needs to solve, and determine that the technical solution of this application has beneficial effects compared with the objective prior art.

[0022] This embodiment provides an electric cantilever, the structure of which includes a lifting arm 1, a guide rail 2, a drive mechanism, a control panel, an emergency stop switch, a balance leg 3, a counterweight loading structure 4, a head rotation mechanism 5, a speed differential, and a rotation lock switch; the drive mechanism is used to drive the lifting arm 1 to rise and fall along the guide rail 2; the control panel integrates control buttons, indicator lights, and limit devices; the balance leg 3 is height-adjustable and supports the equipment base; the counterweight loading structure 4 is used to arrange counterweights in two staggered layers; the head rotation mechanism 5 achieves head rotation and locking through the speed differential and the rotation lock switch; the emergency stop switch is used for emergency shutdown in case of equipment malfunction.

[0023] In this embodiment, the balance support leg 3 includes four independently adjustable support legs. The support legs adopt a telescopic structure and the height is adjusted by threads. Anti-slip pads are provided on the bottom surface of the support legs to ensure that the bottom surface of the support legs is in close contact with the ground, ensuring the horizontal stability of the equipment. The height of the four support legs can be adjusted according to the flatness of the working ground to keep the equipment in a horizontal state and prevent the equipment from tilting during operation.

[0024] The counterweight loading structure 4 uses an alternating stacking method to support the counterweight. The counterweight loading structure 4 is equipped with positioning grooves to facilitate the positioning and placement of the counterweight and prevent it from sliding. The counterweight is loaded by a forklift. During loading, the forklift places the counterweight in the upper and lower positioning grooves in sequence to ensure that the upper and lower counterweights are staggered, effectively lowering the center of gravity of the equipment and improving the stability of the equipment under heavy load.

[0025] The operation of the head rotation mechanism 5 is as follows: the operator quickly pulls the differential switch to lock it, then pulls the rotation locking switch without releasing it. At this time, the differential switch is unlocked, and pulling the differential switch again will rotate the head. After rotating to the target angle, the rotation locking switch is released, and the differential switch locks again, thus completing the head locking. The operation is simple and convenient, the locking is reliable, and it can effectively prevent accidental head rotation.

[0026] The lifting arm 1 is equipped with a maximum limit point and a minimum limit point. The limit device adopts a limit switch. When the lifting arm 1 rises to the maximum limit point or falls to the minimum limit point, the limit switch is triggered, and the drive mechanism automatically stops working to prevent the lifting arm from excessively rising or falling, which could lead to equipment damage or safety accidents.

[0027] The drive mechanism is electrically driven, using a stepper motor as the drive source. The stepper motor has high precision and runs smoothly, enabling precise lifting and lowering of the lifting arm 1. The equipment supports both plug-in and battery power supply methods. The plug-in type connects to the mains power supply via a power cord, meeting the needs of long-term continuous operation. The battery type is equipped with a removable lithium battery and a dedicated charger. The lithium battery has a large capacity and long battery life, and the removable design facilitates battery replacement and charging. When there is no external power supply, a fully charged lithium battery can be replaced to ensure normal operation of the equipment.

[0028] In this embodiment, the method of using the electric cantilever includes the following steps: S1. Pre-use inspection: Check the appearance of the equipment for damage, deformation, etc. Check the control components such as the control panel, remote control, emergency stop switch, etc. for normal operation. Check the power supply external power supply or battery for normal operation. Check the working environment for safety and obstacles, and for a flat ground. Operators should wear safety helmets, non-slip shoes and other safety protective equipment. S2. Power Connection and Start-up: Select the power supply method according to the work scenario. If there is an external power supply, connect the power cord to the mains power. If there is no external power supply, install the fully charged removable battery. After the power is connected, the indicator light on the control panel will light up, confirming that the device has entered standby mode. S3. No-load test run: Deploy the four balance legs 3, and adjust the height of each leg to make the equipment horizontal and stable, ensuring that the bottom of the legs is in close contact with the ground; control the lifting arm 1 to lift and lower it 1-2 times under no-load using the remote control, observe whether the lifting process is smooth, check whether the limit device is effective, and if any abnormality occurs, press the emergency stop switch to stop the machine and check. S4. Counterweight loading: The counterweight blocks are arranged in two staggered layers in the positioning slots of the counterweight block loading structure 4 using a forklift to ensure that the counterweight blocks are placed firmly and without slippage. The number of counterweight blocks is reasonably selected according to the load requirements of the operation. S5. Lifting Operation: Control the lifting arm 1 to rise by operating the control button on the remote control. When the lifting arm 1 reaches the target height, the limit device is triggered, and the lifting arm automatically stops rising. Before lowering, the operator must confirm that there are no personnel or obstacles under the lifting arm. After confirming safety, control the lifting arm 1 to lower to the target position. S6. Head rotation operation: The operator quickly pulls the differential switch to lock it, then pulls the rotation locking switch without releasing it, and then pulls the differential switch again to drive the head rotation mechanism 5 to rotate. After rotating to the target angle, the operator releases the rotation locking switch, the differential switch locks, and the head is locked. S7. Operation completed: After the operation is completed, use the remote control to lower the lifting arm 1 to the lowest position, turn off the power to the equipment, disconnect the external power supply or remove the battery, lock the control panel, clean up the work site, and put the equipment in a neat place.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. An electric cantilever, characterized in that it includes a lifting arm (1), a guide rail (2), a drive mechanism, a control panel, an emergency stop switch, a balance leg (3), a counterweight loading structure (4), a head rotation mechanism (5), a speed differential and a rotation lock switch; the drive mechanism is used to drive the lifting arm (1) to rise and fall along the guide rail (2); the control panel integrates control buttons, indicator lights and limit devices; the balance leg (3) is height-adjustable and supports the equipment base; the counterweight loading structure (4) is used to arrange counterweights in two staggered layers; the head rotation mechanism (5) achieves head rotation and locking through the speed differential and the rotation lock switch; and the emergency stop switch is used for emergency shutdown when the equipment malfunctions.

2. The electric cantilever according to claim 1, characterized in that: The balance support leg (3) includes four independently adjustable support legs, with the bottom surface of the support legs in close contact with the ground to ensure the equipment is horizontally stable.

3. An electric cantilever according to claim 1, characterized in that: The counterweight loading structure (4) uses two layers of staggered stacking to support the counterweight, which is loaded by a forklift.

4. An electric cantilever according to claim 1, characterized in that: The operation mode of the head rotation mechanism (5) is to quickly pull the speed differential to lock it, pull the rotation locking switch without releasing it, pull the speed differential again to rotate the head, and release the rotation locking switch to complete the head locking.

5. An electric cantilever according to claim 1, characterized in that: The lifting arm (1) is equipped with a maximum limit point and a minimum limit point, and automatically stops lifting when it reaches the limit point.

6. An electric cantilever according to claim 1, characterized in that: The drive mechanism is electrically driven, and the device supports both plug-in and battery power supply methods. The battery-powered version is equipped with a removable battery and a dedicated charger.

7. An electric cantilever according to claim 1, comprising the following steps: S1. Pre-use inspection: Inspect the appearance of the equipment, control components, power supply and working environment, and ensure that operators wear safety protective equipment; S2. Power Connection and Start-up: Connect the power supply and confirm that the device has entered standby mode; S3, No-load test run: Deploy the balance support leg (3) and adjust it to a stable support. Control the lifting arm (1) to lift and lower it 1-2 times under no-load using the remote control to check the lifting stability and the effectiveness of the limit device. S4. Counterweight loading: The counterweight blocks are arranged in two staggered layers on the equipment base; S5. Lifting operation: Control the lifting arm (1) to rise to the target height and stop automatically via remote control. Before lowering, confirm that there are no personnel or obstacles below and control the descent to the target position. S6. Head rotation operation: Pull the differential speed device to lock, and operate the rotation locking switch and differential speed device to achieve head rotation and locking; S7. Operation completed: Lower the lifting arm (1) to the lowest position, turn off the power, and lock the control panel.

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