Hoisting device for hoisting cover plate and construction method of hoisting device

Abstract

According to the hoisting device for hoisting the cover plate and the construction method of the hoisting device, the supporting frame assembly comprises the inclined rods, the supporting rods and the wheels, the inclined rods, the supporting rods and the wheels jointly form a foundation framework of the device, and stable supporting and maneuverability are provided; the telescopic rod piece is fixed to the supporting frame assembly, and scale marks are arranged on the telescopic rod piece; the lifting executing mechanism comprises an adjustable lifting rod and a lifting appliance, the adjustable lifting rod is firmly connected with one end of the supporting frame assembly, the length of the adjustable lifting rod can be changed according to requirements, and the lifting appliance is arranged at the tail end of the adjustable lifting rod and used for fixing and lifting the cover plate; according to the specific weight and the geometric dimension of the cover plate to be hoisted, the optimal lever ratio can be selected by adjusting the length of the telescopic rod piece and dynamically adjusting the ratio of levers formed between the telescopic rod piece and the hoisting executing mechanism, and high-efficiency cover plate hoisting operation is ensured on the premise that safety is not lost. The device can be recycled, is simple and convenient to store, and can be adjusted according to different conditions of the project cover plate to meet the construction requirement.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a hoisting device for hoisting a cover plate and a construction method thereof. Background Art

[0002] Cover plates are present in all kinds of construction projects, and the country is currently vigorously promoting pipeline corridor projects. Various types of cover plates have been widely used in various cable corridors, road covers, exhibition hall trenches and other projects, such as cast iron cover plates, reinforced concrete cover plates, plain concrete cover plates, etc., and they are of different sizes and weights. Small-sized and light-weight cover plates can be manually carried and installed, while large-sized and heavy-weight cover plates require lifting equipment to assist manual construction, which is cumbersome and inefficient. At the same time, the subsequent maintenance and inspection construction is inconvenient and costly. Summary of the invention

[0003] The purpose of the present invention is to provide a lifting device for cover plate lifting and a construction method thereof in view of the deficiencies of the prior art.

[0004] The specific technical solutions are as follows:

[0005] A lifting device for lifting a cover plate, comprising:

[0006] The support frame assembly, including the diagonal rod, the strut and the wheels, together constitutes the basic structure of the device, providing stable support and maneuverability;

[0007] A retractable rod, fixed to the support frame assembly, with scale markings provided thereon;

[0008] The lifting actuator includes an adjustable lifting rod and a lifting device. The adjustable lifting rod is firmly connected to one end of the support frame assembly. The length of the adjustable lifting rod can be changed according to demand. The lifting device is arranged at the end of the adjustable lifting rod and is used to fix and lift the cover plate.

[0009] Among them, according to the specific weight and geometric dimensions of the cover plate to be hoisted, by adjusting the length of the retractable rod and dynamically adjusting the ratio of the lever formed between the retractable rod and the lifting actuator, the most suitable lever ratio can be selected to ensure efficient cover plate lifting operations without sacrificing safety.

[0010] Optionally, the retractable rod includes a fixed sleeve rod, a sliding inner rod and a locking piece, the sliding inner rod is slidably connected to the fixed sleeve rod, and the locking piece includes an embedded magnet pre-arranged inside the fixed sleeve rod and a guide groove made of non-magnetic metal material arranged at a relative position on the sliding inner rod, and a magnet of opposite polarity is embedded in the groove to interact with the magnet in the beam to generate attraction.

[0011] Optionally, the lifting device includes but is not limited to two forms: a hook and a pneumatic clip. The former is suitable for cover plates with lifting ears, and the latter is suitable for cover plates without lifting ears. Both can be fine-tuned according to different cover plate sizes to ensure accurate grasping and releasing.

[0012] Optionally, the pneumatic buckle design in the sling is equipped with a double sealing ring structure.

[0013] Optionally, the wheels adopt a universal wheel structure, and each set of wheels is equipped with a braking device at the bottom, which can quickly stop the device from moving in any direction.

[0014] Optionally, the diagonal rods and struts of the support frame are arranged in a split telescopic manner, and can be flexibly adjusted according to the inclination of the ground and the size of the cover plate, thereby ensuring that the device remains balanced and reliable in a complex geographical environment.

[0015] Optionally, the hook of the sling is inlaid with an anti-slip texture.

[0016] A construction method of a lifting device for lifting a cover plate comprises the following steps:

[0017] Step 1: Move the device to the vicinity of the cover plate to be hung, and use the mobility of the wheels to accurately align the device;

[0018] Step 2: According to the weight and geometric dimensions of the cover plate to be hoisted, the length of the telescopic rod is manually or automatically adjusted with reference to the scale mark on the telescopic rod, and the lever ratio is dynamically adjusted;

[0019] Step 3: After the adjustment is completed, confirm that the optimal lever ratio is formed between the telescopic rod and the lifting actuator to minimize the force and maximize the efficiency;

[0020] Step 4: Start the lifting actuator, adjust the adjustable lifting rod to a suitable angle and height, and align the lifting device with the fixing point of the cover plate to be lifted;

[0021] Step 5: Use the lifting device to fix the cover plate, and slowly lift the cover plate to a specified height through the lifting actuator to ensure that the cover plate is stable and does not shake during the lifting process;

[0022] Step 6: Move the device to the target location, slowly lower the cover plate, and safely place it at the designated location;

[0023] Step 7: Release the lifting device, remove the cover plate, and complete a single lifting operation;

[0024] Step 8. Repeat steps 2 to 7 until all cover plates are hoisted. Before each operation, adjust the length of the retractable rod according to the parameters of the new cover plate to continuously optimize the leverage ratio.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention forms a simple lever between the telescopic rod and the lifting actuator, thereby reducing construction effort, improving construction efficiency, and reducing construction time. The movable end of the telescopic rod can be slid by the telescopic rod, and the ratio of the long and short sides of the lever can be adjusted, which is suitable for the construction of covers of various weights. At the same time, the sliding end can be retracted after use, which reduces storage space and improves practicality. The device can be recycled, is easy to store, and can be adjusted according to different conditions of the project covers to meet the construction needs, with good economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a top view structural schematic diagram of a lifting device used for lifting the cover plate;

[0028] Figure 2 It is a front view structural schematic diagram of a lifting device used for lifting the cover plate;

[0029] Figure 3 is a schematic diagram of the structure of a telescopic rod;

[0030] Figure 4 This is a schematic diagram of the structure of the sling.

[0031] In the figure: 1. wheel; 2. axle; 3. diagonal rod; 4. cross rod; 5. support rod; 6. telescopic rod; 7. adjustable suspension rod; 8. sling; 9. sliding inner rod; 10. cover plate; 11. fixed sleeve rod; 12. locking piece. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0035] The lifting device for lifting the cover plate provided in the present invention is referred to Figure 1-Figure 4 ,include:

[0036] The support frame assembly, including the diagonal rod 3, the support rod 5 and the wheel 1, together constitutes the basic structure of the device, providing stable support and maneuverability;

[0037] The telescopic rod 6 is fixed to the support frame assembly and has a scale mark on it;

[0038] The lifting actuator includes an adjustable lifting rod 7 and a lifting device 8. The adjustable lifting rod 7 is firmly connected to one end of the support frame assembly. The length of the adjustable lifting rod 7 can be changed according to demand. The lifting device 8 is arranged at the end of the adjustable lifting rod 7 and is used to fix and lift the cover plate 10.

[0039] Among them, according to the specific weight and geometric dimensions of the cover plate 10 to be hoisted, by adjusting the length of the retractable rod 6 and dynamically adjusting the ratio of the lever formed between the retractable rod 6 and the hoisting actuator, the most suitable lever ratio can be selected to ensure high-efficiency cover plate 10 hoisting operation without sacrificing safety.

[0040] In this embodiment, refer to Figure 1-Figure 2 The support frame assembly is composed of diagonal rods 3, struts 5 and wheels 1, which together constitute the basic structure of the device, wherein multiple diagonal rods 3 are fixedly connected to the axle 2 of the wheel 1, and the struts 5 are installed between two diagonal rods 3 for support. In addition, a cross bar 4 is installed between two adjacent diagonal rods 3 for further connection. The diagonal rods 3 and the struts 5 are made of high-strength steel and have excellent load-bearing capacity and stability. The wheel 1 is preferably a universal wheel, which is convenient for flexible steering and smooth movement in a narrow space. The design feature of the retractable rod 6 is that it can be freely extended and retracted according to the work requirements. The surface of the rod is marked with clear scale markings, which is convenient for the operator to intuitively grasp the current extension length. The rod itself is made of lightweight and high-strength alloy material, taking into account both strength and portability.

[0041] In this embodiment, refer to Figure 3The telescopic rod 6 includes a fixed sleeve rod 11, a sliding inner rod 9 and a locking member 12. The sliding inner rod 9 is slidably connected to the fixed sleeve rod 11. The locking member 12 includes an embedded magnet pre-set inside the fixed sleeve rod 11 and a guide groove made of a non-magnetic metal material set at a relative position on the sliding inner rod 9. The groove is embedded with a magnet of opposite polarity so as to interact with the magnet in the beam to generate an attractive force. In addition, the telescopic mechanism of the telescopic rod can also adopt a threaded screw or a hydraulic push rod to ensure smooth telescopic movement and accurate positioning. The suspension rod is closely connected to one end of the telescopic rod 6 in a fixed manner. The length of the suspension rod itself can be adjusted through a built-in extension section according to the lifting requirements; the suspension device 8 is designed with a multifunctional interface to be compatible with cover plates 10 of different shapes and sizes. For example, for cover plates 10 with lifting rings or lifting ears, a hook-type suspension device 8 is used; and for cover plates 10 without obvious hanging points, a hoop or vacuum suction cup type suspension device 8 is used to ensure the stability and safety of the lifting process. By adjusting the telescopic length of the telescopic rod 6, the device can flexibly adjust the lever ratio formed between the rod and the lifting actuator to adapt to the characteristics and environmental conditions of the cover plate 10 of the current lifting operation. Specifically, when facing a heavier or larger cover plate 10, the extension length of the telescopic rod 6 should be appropriately increased to increase the power arm of the lever, thereby reducing the force required to be applied, and vice versa.

[0042] In actual use, first move the lifting device to the vicinity of the cover plate 10 to be lifted, and easily position it through the wheel 1 assembly. Then, according to the actual size and weight of the cover plate 10, refer to the scale mark on the retractable rod 6, and manually or with the help of the built-in motor drive the rod to extend and retract to an appropriate length. At this time, the lever ratio changes accordingly, in order to achieve the best torque distribution state. After that, the operator fixes the cover plate 10 through the sling 8 of the lifting actuator, lifts it with the lifting rod, and smoothly moves it to the designated position to put it down, completing a complete lifting cycle. In the entire operation process, the dynamically adjusted lever ratio ensures that the maximum lifting effect can be obtained with the minimum force under any circumstances, greatly improving the efficiency and safety of the lifting work.

[0043] In this embodiment, refer to Figure 4, the lifting device 8 includes but is not limited to two forms: hooks and pneumatic clips. The hooks are mainly suitable for cover plates 10 that have been pre-designed with lifting ears. Such hooks are usually made of high-strength steel and undergo a special heat treatment process to ensure that they can maintain sufficient toughness and rigidity under heavy loads. The opening width and depth of the hooks are adjustable to accommodate lifting ears of different diameters or shapes, ensuring a perfect fit with the lifting ears of the cover plate 10 to avoid the risk of slipping due to uneven force during the lifting process. Pneumatic clips are specially designed for cover plates 10 without lifting ears. They use strong air pressure to generate sufficient clamping force to fix the cover plate 10. Compared with traditional mechanical clips, pneumatic clips have the advantages of fast response speed and controllable clamping force, and can grasp the edge of the cover plate 10 more gently but firmly without damaging its surface. More importantly, the pneumatic clips can be fine-tuned according to the thickness of the cover plate 10 to ensure uniform pressure at each contact point and avoid deformation of the cover plate 10 due to excessive local pressure. Both can be fine-tuned to suit different cover plate 10 sizes, ensuring precise gripping and release.

[0044] In this embodiment, the pneumatic buckle design in the sling 8 is equipped with a double sealing ring structure. A double sealing ring structure is set inside the pneumatic buckle, which not only improves the airtightness of the buckle, but also maintains excellent sealing performance under high pressure conditions, effectively preventing the problem of reduced clamping force caused by gas leakage. Specifically: the first layer of sealing ring is mainly used to prevent external dust and impurities from invading the inside of the buckle, keeping the inside clean and extending the service life of the equipment. The second layer of sealing ring is the main force of the pneumatic buckle's sealing performance. It can withstand higher air pressure to ensure that the buckle can still firmly grasp the cover plate 10 under high pressure conditions to avoid safety hazards caused by accidental release. Through such double insurance measures, even in harsh working environments, the pneumatic buckle can stably exert its clamping function to ensure the absolute safety of the cover plate 10 during the lifting process, greatly reducing operational risks and improving the reliability and efficiency of operations.

[0045] Reference Figure 1-2, the wheel 1 adopts a universal wheel layout. The design feature of the universal wheel (i.e. omnidirectional wheel) is that it has the ability to roll in multiple directions. Unlike ordinary directional wheels that can only move in a straight line, the universal wheel can rotate 360° in place, which means that the device equipped with this wheel can achieve free movement in the horizontal, vertical and even diagonal directions without changing the main body orientation. This feature is particularly prominent in a small space or a crowded working environment. The operator can easily bypass obstacles and quickly position the lifting device to the ideal position, greatly improving the speed and flexibility of on-site deployment. In addition, this design adds a braking device at the bottom of each set of universal wheels. This type of braking device usually includes a simple manual brake system or an electric control unit. Once triggered, it can immediately lock the wheel axle 2 and prevent the wheel 1 from rotating, so that the entire device can be stably stopped in any direction, which plays a decisive role in avoiding accidental sliding during the lifting process and ensuring the safety of operators and surrounding facilities.

[0046] The diagonal rod 3 and the strut 5 of the support frame adopt a split telescopic setting. The split telescopic support frame can adjust the length of the diagonal rod 3 and the strut 5 according to the specific tilt angle, ensuring that the four legs of the device always touch the ground, thereby maintaining the stability of the overall structure and avoiding the occurrence of overturning accidents. In addition, for the lifting task of cover plates 10 with large size differences, the traditional fixed-size support frame often cannot take into account the operating requirements of small compact cover plates 10 and large ultra-wide cover plates 10. The telescopic support frame can adjust the length of the diagonal rod 3 and the strut 5 so that the lifting device can fit the contour of the small cover plate 10 and support the weight of the large cover plate 10, realizing the flexible adaptability of "one key opening multiple locks".

[0047] The hook of the sling 8 is inlaid with anti-skid textures. When the hook is embedded in or hooked on the lifting lug or ring of the object to be lifted (such as the cover plate 10), the presence of the anti-skid texture can significantly increase the friction resistance between the two, preventing the hook from separating from the lifting lug due to vibration or external impact, thereby ensuring the stability of the lifting process. Especially when lifting a wet, greasy or smooth cover plate 10, the anti-skid texture can effectively overcome these unfavorable conditions. Even in a wet and slippery environment, the hook can firmly grasp the lifting lug, avoiding safety hazards caused by poor grip.

[0048] The construction method of the lifting device for lifting the cover plate provided by the present invention comprises the following steps:

[0049] Step 1: Move the device to the vicinity of the cover plate 10 to be hung, and use the mobility of the wheels 1 to accurately align the device. During the movement, pay attention to the surrounding environment, avoid obstacles, and ensure that the path is unobstructed;

[0050] Step 2: According to the weight and geometric dimensions of the cover plate 10 to be hoisted, refer to the scale mark on the telescopic rod 6, manually or automatically adjust the length of the telescopic rod 6, and dynamically adjust the leverage ratio. When adjusting, pay attention to the scale mark to ensure that each adjustment is made within a safe range to avoid exceeding the load limit of the rod;

[0051] Step 3: After the adjustment is completed, confirm that the optimal lever ratio is formed between the telescopic rod 6 and the lifting actuator to minimize the force and maximize the efficiency;

[0052] Step 4: Start the lifting actuator, adjust the adjustable lifting rod 7 to a suitable angle and height, and align the lifting device 8 with the fixing point of the cover plate 10 to be lifted. During operation, ensure that the lifting device 8 is fully engaged or clamped to prevent it from falling off during the lifting process;

[0053] Step 5: Use the lifting device 8 to fix the cover plate 10, and slowly lift the cover plate 10 to a specified height through the lifting actuator to ensure that the cover plate 10 is stable and does not shake during the lifting process;

[0054] Step 6: Move the device to the target placement location, slowly lower the cover plate 10, and safely place it at the designated location;

[0055] Step 7: Release the lifting device 8, remove the cover plate 10, and complete the single lifting operation;

[0056] Step 8: Repeat steps 2 to 7 until all the cover plates 10 are hoisted. Before each operation, adjust the length of the retractable rod 6 according to the parameters of the new cover plate 10 to continuously optimize the leverage ratio and ensure the efficiency and safety of each hoisting operation.

[0057] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting device for lifting a cover plate, characterized in that: include: The support frame assembly, including the diagonal rod, the strut and the wheels, together constitutes the basic structure of the device, providing stable support and maneuverability; A retractable rod, fixed to the support frame assembly, with scale markings provided thereon; The lifting actuator includes an adjustable lifting rod and a lifting device. The adjustable lifting rod is firmly connected to one end of the support frame assembly. The length of the adjustable lifting rod can be changed according to demand. The lifting device is arranged at the end of the adjustable lifting rod and is used to fix and lift the cover plate. Among them, according to the specific weight and geometric dimensions of the cover plate to be hoisted, by adjusting the length of the retractable rod and dynamically adjusting the ratio of the lever formed between the retractable rod and the lifting actuator, the most suitable lever ratio can be selected to ensure efficient cover plate lifting operations without sacrificing safety.

2. The lifting device for lifting the cover plate according to claim 1, characterized in that: The telescopic rod comprises a fixed sleeve rod, a sliding inner rod and a locking piece. The sliding inner rod is slidably connected to the fixed sleeve rod. The locking piece comprises an embedded magnet pre-arranged inside the fixed sleeve rod and a guide groove made of non-magnetic metal material arranged at a relative position on the sliding inner rod. A magnet with opposite polarity is embedded in the groove so as to interact with the magnet in the beam to generate attraction.

3. The lifting device for lifting the cover plate according to claim 1, characterized in that: The lifting devices include but are not limited to two types: hooks and pneumatic clips. The former is suitable for cover plates with lifting ears, and the latter is suitable for cover plates without lifting ears. Both can be fine-tuned according to different cover plate sizes to ensure accurate grasping and releasing.

4. The lifting device for lifting the cover plate according to claim 3, characterized in that: The pneumatic snap-on design in the spreader is equipped with a double sealing ring structure.

5. The lifting device for lifting the cover plate according to claim 1, characterized in that: The wheels adopt a universal wheel structure, and the bottom of each set of wheels is equipped with a braking device, which can quickly stop the device from moving in any direction.

6. The lifting device for lifting the cover plate according to claim 1, characterized in that: The diagonal rods and the support rods of the support frame adopt a split telescopic setting, which can be flexibly adjusted according to the inclination of the ground and the size of the cover plate, ensuring that the device remains balanced and reliable in a complex geographical environment.

7. The lifting device for lifting the cover plate according to claim 3, characterized in that: The hook of the sling is inlaid with anti-slip texture.

8. The construction method of the lifting device for lifting the cover plate according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Move the device to the vicinity of the cover plate to be hung, and use the mobility of the wheels to accurately align the device; Step 2: According to the weight and geometric dimensions of the cover plate to be hoisted, the length of the telescopic rod is manually or automatically adjusted with reference to the scale mark on the telescopic rod, and the lever ratio is dynamically adjusted; Step 3: After the adjustment is completed, confirm that the optimal lever ratio is formed between the telescopic rod and the lifting actuator to minimize the force and maximize the efficiency; Step 4: Start the lifting actuator, adjust the adjustable lifting rod to a suitable angle and height, and align the lifting device with the fixing point of the cover plate to be lifted; Step 5: Use the lifting device to fix the cover plate, and slowly lift the cover plate to a specified height through the lifting actuator to ensure that the cover plate is stable and does not shake during the lifting process; Step 6: Move the device to the target location, slowly lower the cover, and safely place it at the designated location; Step 7: Release the lifting device, remove the cover plate, and complete a single lifting operation; Step 8. Repeat steps 2 to 7 until all cover plates are hoisted. Before each operation, adjust the length of the retractable rod according to the parameters of the new cover plate to continuously optimize the leverage ratio.

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