Stable-lifting concrete pole lifting appliance and lifting method

Abstract

The invention discloses a stable-hoisting concrete pole hoisting sling and a hoisting method, and relates to the technical field of hoisting, the stable-hoisting concrete pole hoisting sling comprises a concrete pole body and two first steel wire ropes, the two first steel wire ropes are fixed through a second steel wire rope, and the second steel wire rope is connected with hoisting equipment; the grabbing and clamping mechanism is connected with a first steel wire rope, the cement pole body in the shape of a circular truncated cone is clamped and fixed through the grabbing and clamping mechanism, clamping and fixing can be completed in the mode that the grabbing and clamping mechanism is attached to the surface of the cement pole in a self-adaptive mode, a chuck does not need to be replaced independently, and the limitation is low during use; compared with the prior art, the clamping device has the advantages that the clamping device is simple in structure and convenient to use, circular truncated cone cement poles with different inclination angles can be clamped, the clamping device can be matched with cement poles with different diameters, and the two replaceable grabbing and clamping mechanisms can solve the problems that the fitting degree is low and clamping is unstable.

Description

Technical Field

[0001] This invention relates to the field of lifting-related technologies, specifically to a lifting device and method for lifting stable cement poles. Background Technology

[0002] Cement poles, also known as reinforced concrete cement poles, are overhead line supports made of steel bars and concrete as the main materials. They are mainly used for the construction of power, communication, railway and petroleum lines [1]. The raw materials include high-grade silicate cement, medium-coarse sand, crushed stone, etc. They are produced by centrifugal process. The concrete strength is not lower than C40-C50 grade. The structural support uses cold-drawn steel bars or non-prestressed steel bars.

[0003] Cement poles are typically shaped like a frustum with a larger diameter at one end and a smaller diameter at the other. When clamping and lifting this type of pole, problems arise such as poor fit and unstable clamping.

[0004] A search revealed a lifting device for the outer mold of precast cement pipes, publication number CN112792978B. Please refer to the accompanying drawings in the specification. Figure 11 In the diagram, A1 represents the existing relative clamping method, while A2 represents the flip-up clamping method of this invention. Clearly, in A1, only one end contacts the cement pole during clamping, resulting in low fit and unstable clamping. If the clamp is set in an inclined position, the limitations of setting the clamp in an inclined position are relatively significant, as the inclination angle of the cement pole's frustum is determined based on the construction site and its angle is highly variable. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a stable lifting device and method for cement poles, solving the problems of low fit and unstable clamping.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a stable lifting device for cement poles, comprising a cement pole body, two No. 1 steel wire ropes fixed together by a No. 2 steel wire rope, the No. 2 steel wire rope being connected to a lifting device; a clamping mechanism connected to the No. 1 steel wire rope, which clamps and fixes the frustum-shaped cement pole body, and the lifting device lifts the cement pole body using the No. 2 steel wire rope and the No. 1 steel wire rope; and a center of gravity adjustment mechanism, through which the lifting device is connected to the No. 2 steel wire rope, used to adjust the posture of the cement pole body so that it does not change during the lifting process.

[0007] Furthermore, the gripping mechanism includes two carrier plates, each with a connecting ring fixed at both ends, and the carrier plates are connected to the No. 1 steel wire rope through the two connecting rings; Two clamping plates are slidably mounted on the bottom of the carrier plate along its length direction, and both clamping plates are connected to the clamping assembly mounted on the carrier plate. Both clamping plates are equipped with adaptive deflection clamping elements; The carrier plate is also equipped with anti-detachment components to prevent it from falling during lifting.

[0008] Furthermore, the clamping assembly includes a transmission disk rotatably mounted on the bottom of the carrier plate, with transmission plates rotatably mounted on both ends of the transmission disk, and the transmission plates being rotatably connected to two clamping plates respectively. A worm gear is coaxially fixed on the transmission disc, and a worm is rotatably mounted on one side of the worm gear to cooperate with it.

[0009] Furthermore, the adaptive deflection clamping member includes a flip groove formed on the clamping plate, a movable clamping plate is provided in the flip groove, a rotating shaft is fixed in the flip groove, and the shaft hole formed on the movable clamping plate is rotatably connected to the rotating shaft. The movable clamp includes a V-shaped clamp, a carrier plate is fixed to one side of the clamp, a shaft hole is opened on the carrier plate, and two pull claws integrally formed thereon are provided on the side of the carrier plate away from the clamp. The bottom of the pull claw and the clamping plate are both fixed with hooks, and the hooks on the clamping plate and the hooks on the bottom of the pull claw are connected by a tension spring.

[0010] Furthermore, the anti-detachment component includes an anti-detachment plate slidably mounted on the carrier plate, and the anti-detachment plate is provided with a rack portion, which meshes with a gear coaxially fixed on the worm gear.

[0011] Furthermore, a lifting plate is also vertically and slidably mounted on the clamping plate. A locking groove group is fixed at the bottom end of the lifting plate. Locking plates are fixed on both sides of the bottom of the locking groove group. Multiple locking strips arranged in an arc are fixed at the bottom of the locking plates. The locking strips cooperate with the locking groove group opened on the movable clamping plate and located on both sides of the shaft hole. A sliding shaft is slidably mounted on the gear shaft, a pull tube is rotatably mounted on the sliding shaft, a synchronizing tube is fixed on the pull tube, and two lifting plates are slidably connected to the synchronizing tube.

[0012] Furthermore, the gripping mechanism includes a first gripping arm and a second gripping arm rotatably connected to the first gripping arm, forming a scissor fork through the first gripping arm and the second gripping arm; Both the first and second clamping arms are rotatably connected to a flipping clamp, and the ends of the first and second clamping arms away from the flipping clamps are connected to the first wire rope.

[0013] Furthermore, the center of gravity adjustment mechanism includes a main frame connected to the lifting equipment, a bearing box is slidably installed inside the main frame, and a first adjusting wheel and two second adjusting wheels are rotatably installed inside the bearing box; The carrier box is arranged in a triangle, with the first adjusting wheel rotatably installed at the top corner and the two second adjusting wheels rotatably installed at the other two corners; The main hanger is equipped with a force-locking assembly that cooperates with the first and second adjusting wheels.

[0014] Furthermore, the force-locking assembly includes a first locking block fixed to the bottom inner side of the main hanger, the first locking block cooperating with a first locking groove opened on the first adjusting wheel, and second locking blocks fixed on both sides of the main hanger, the second locking blocks cooperating with a second locking groove opened on the second adjusting wheel; Two guide rods are fixed on both sides of the main hanger, and springs are fitted on all four guide rods. One end of the spring is fixed to the main hanger, and the other end is fixed to the carrier box.

[0015] The present invention also provides a method for lifting a stable cement pole, using the aforementioned stable cement pole lifting device, comprising the following steps: Step 1: Clamp and fix the cement pole body using the gripping mechanism; Step 2: Apply lifting force through the lifting equipment, and the center of gravity adjustment mechanism will use this lifting force to adaptively move to the center position to ensure the stability of the lifting; Step 3: Use the lifting force of the hoisting equipment to lift the cement pole body, ensuring that the cement pole body remains in the same state before and after lifting.

[0016] The present invention has the following beneficial effects: 1. This stable cement pole lifting device can clamp and fix the cement pole by adaptively conforming to the surface of the cement pole through the gripping mechanism. There is no need to replace the chuck separately. It has strong versatility and few limitations in use. It can clamp the truncated cone cement poles with different inclination angles and can be adapted to cement poles with different diameters. This invention provides two interchangeable gripping mechanisms, both of which can effectively solve the problems of low gripping fit and instability.

[0017] Second, this stable cement pole lifting device, through the center of gravity adjustment mechanism, ensures that the cement pole remains in the same position after lifting when the clamping mechanism is in different axial and circumferential positions, thereby greatly reducing the difficulty of clamping operations and further increasing the efficiency of the operation.

[0018] Third, the cement pole lifting device that provides stable lifting is designed to achieve the above-mentioned effects one and two through a purely mechanical structure. The reliability and stability of its mechanical structure are higher than those assisted by electronic equipment.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the gripping mechanism in Embodiment 1 of the present invention; Figure 3 for Figure 2 A structural diagram from another direction; Figure 4 for Figure 2 Exploded structural diagram; Figure 5 This is a schematic diagram of the clamping plate in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram showing the position of the worm gear in Embodiment 1 of the present invention; Figure 7 for Figure 6 A structural diagram from another direction; Figure 8 This is a cross-sectional schematic diagram of the clamping plate in Embodiment 1 of the present invention; Figure 9 for Figure 6 Enlarged view of the local structure at point A; Figure 10 for Figure 7 Enlarged view of the local structure at point B; Figure 11 This is a schematic diagram showing the differences between the movable clamping plate in this invention and existing technologies; Figure 12 This is a schematic diagram of the gripping mechanism in Embodiment 2 of the present invention; Figure 13 for Figure 12 Floor plan; Figure 14 for Figure 12 Exploded view of the center-flipping chuck; Figure 15 This is a schematic diagram of the center of gravity adjustment mechanism in Embodiment 2 of the present invention; Figure 16 for Figure 15 Exploded view; Figure 17 This is a schematic diagram of the structure of locking block No. 1 and locking block No. 2 in Embodiment 2 of the present invention; Figure 18 This is a schematic diagram of the internal structure of the carrier box in Embodiment 2 of the present invention; Figure 19 This is a schematic diagram of the support portion in Embodiment 2 of the present invention.

[0021] In the diagram: 1. Carrier plate; 101. Clamping plate; 102. Movable clamping plate; 103. Transmission disc; 104. Transmission plate; 105. Worm gear; 106. Worm; 107. Hook; 108. Tilting groove; 109. Rotating shaft; 1010. Shaft hole; 1011. Locking groove assembly; 2. Anti-detachment plate; 201. Reinforcing plate; 202. Rack assembly; 203. Gear; 204. Pull tube; 205. Synchronizing tube; 206. Lifting plate; 207. Movable groove; 208. Locking plate; 209. Locking strip; 2010, Sliding shaft; 2011, Synchronous plate; 3, No. 1 steel wire rope; 301, No. 2 steel wire rope; 302, Hook; 5, Cement pole body; 6, No. 1 clamping arm; 601, No. 2 clamping arm; 602, Tilting chuck; 7, Main hanger; 701, Bearing box; 702, No. 1 adjusting wheel; 703, No. 2 adjusting wheel; 704, Guide rod; 705, Spring; 706, No. 1 locking block; 707, No. 2 locking block; 708, No. 1 locking groove; 709, No. 2 locking groove; 7010, Support. Detailed Implementation

[0022] 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.

[0023] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0024] The following is based on Figures 1-19 This invention describes a lifting device for stabilizing cement poles, provided in an embodiment of the invention.

[0025] Example 1: As Figures 1-19 As shown, this embodiment of the invention provides a technical solution: a lifting device for stabilizing cement poles, comprising two No. 1 steel wire ropes 3, which are fixed together by a No. 2 steel wire rope 301, which is connected to a lifting device.

[0026] The gripping mechanism is connected to the first wire rope 3. The gripping mechanism clamps and fixes the truncated cone-shaped cement pole body 5. The lifting equipment lifts the cement pole body 5 through the second wire rope 301 and the first wire rope 3.

[0027] The center of gravity adjustment mechanism connects the lifting equipment to the No. 2 steel wire rope 301, and adjusts the posture of the cement pole body 5 so that it does not change during the lifting process.

[0028] In this embodiment of the invention, the lifting equipment can be a crane or an excavator, etc. A hook 302 is connected to the lifting equipment, and a fixing block is provided in the middle of the second wire rope 301. This fixing block forms a hook loop on the second wire rope 301, which is then hooked onto the hook 302. This structure ensures that the two ends of the second wire rope 301 are of the same length and that the force is evenly distributed.

[0029] When the lifting equipment is in operation, the grabbing mechanism is raised via hook 302, wire rope 301 (number two), and wire rope 3 (number one). The grabbing mechanism has pre-clamped and fixed the cement pole body 5, thereby lifting it.

[0030] It should be noted that the center of gravity adjustment mechanism is another optional embodiment of the present invention, and its specific effects and working principle will be described in detail below.

[0031] The gripping mechanism includes two carrier plates 1, each with a connecting ring fixed at both ends. The carrier plates 1 are connected to the No. 1 steel wire rope 3 through the two connecting rings.

[0032] Two clamping plates 101 are slidably mounted on the bottom of the carrier plate 1 along the length direction, and both clamping plates 101 are connected to the clamping assembly mounted on the carrier plate 1.

[0033] Both clamping plates 101 are equipped with adaptive deflection clamping components.

[0034] The carrier plate 1 is also equipped with an anti-detachment component to prevent it from falling during the lifting process.

[0035] In this embodiment of the invention, during operation, two carrier plates 1 are first placed at both ends of the cement pole body 5, and then the clamping assembly is manually driven to work. The clamping assembly drives the two clamping plates 101 to move relative to each other, thereby clamping the cement pole body 5 through the adaptive deflection clamping member. After clamping is completed, the lifting equipment can be operated for hoisting.

[0036] like Figure 1 and Figure 12 As shown, when using the clamping method of this embodiment, the clamping point can be located on the horizontal central axis of the cement pole body 5. Therefore, without the need for additional adjustment of the center of gravity through the No. 1 steel wire rope 3 and the No. 2 steel wire rope 301, the cement pole body 5 can maintain the same horizontal state after being lifted and suspended as before being lifted.

[0037] The clamping assembly includes a transmission disk 103 rotatably mounted on the bottom of the carrier plate 1. Transmission plates 104 are rotatably mounted on both ends of the transmission disk 103, and the transmission plates 104 are rotatably connected to two clamping plates 101 respectively.

[0038] A gear 203 is coaxially fixed on the transmission disc 103, and a worm gear 106 that rotatably engages with the gear 203 is mounted on one side of the gear 203.

[0039] In this embodiment of the invention, the worm gear 106 is rotated by an external tool, which drives the meshing worm wheel 105 to rotate, and the worm wheel 105 drives the transmission disk 103 to rotate together. The rotation of the transmission disk 103 is converted into linear motion of the two clamping plates 101 relative to each other (clamping) or opposite to each other (releasing) through the two transmission plates 104.

[0040] As an alternative to this embodiment, the transmission disk 103 and transmission plate 104 can be replaced with a gear and two racks. The gear is coaxially fixed with the worm gear 105, and each side of the gear meshes with a rack plate, which is fixed to the clamping plate 101. When the worm gear 105 rotates, it drives the gear to rotate, thereby driving the two rack plates and the clamping plate 101 to move relative to or away from each other, ultimately achieving the same technical effect as the above embodiment.

[0041] It should be noted that both of the above implementation schemes utilize the self-locking characteristics of the worm gear 106 and worm wheel 105 transmission to achieve mechanical self-locking after clamping is completed, thus preventing the clamping from loosening.

[0042] The adaptive deflection clamping member includes a flip groove 108 formed on the clamping plate 101, a movable clamping plate 102 is provided in the flip groove 108, a rotating shaft 109 is fixed in the flip groove 108, and the movable clamping plate 102 is rotatably connected to the rotating shaft 109 through a shaft hole 1010 formed on the movable clamping plate 102.

[0043] The movable clamp 102 includes a V-shaped clamp, a carrier plate fixed to one side of the clamp, a shaft hole 1010 opened on the carrier plate, and two pull claws integrally formed thereon on the side of the carrier plate away from the clamp.

[0044] Hooks 107 are fixed to the bottom of the claw and the clamping plate 101. The hooks 107 on the clamping plate 101 and the hooks 107 at the bottom of the claw are connected by a tension spring.

[0045] In this embodiment of the invention, the relative movement of the two clamping plates 101 causes the two movable clamping plates 102 to move together toward the cement pole body 5. Since the cement pole is frustum-shaped, the V-shaped clamps of the movable clamping plates 102 will first contact the pole surface. Under the action of the contact force, the movable clamping plates 102 will automatically rotate around the pivot 109 until the surface of their V-shaped clamps is completely in contact with the conical surface of the cement pole body 5. Subsequently, the continuous clamping force finally completes the firm clamping.

[0046] Unlike existing technologies, traditional clamping methods either involve simple linear motion (leading to poor fit) or pre-setting the clamp to a fixed angle. However, since the taper (tilting angle of the frustum) of different cement poles may vary depending on the production batch or construction site, the applicability of fixed-angle clamps is limited, which can also lead to problems such as loose fit and unstable clamping.

[0047] Please see Figure 11 Figure A1 illustrates the existing clamping method, which involves only point or line contact, resulting in poor fit. Figure A2 illustrates the adaptive clamping method of the present invention, which involves surface contact, resulting in high fit and stable clamping. The movable clamping plate 102 of the present invention can adapt to the change in the cone angle of the cement pole, fundamentally solving the problem.

[0048] The anti-detachment component includes an anti-detachment plate 2 that is slidably mounted on a carrier plate 1. The anti-detachment plate 2 is provided with a rack portion 202, which meshes with a gear 203 that is coaxially fixed on a worm gear 105.

[0049] In this embodiment of the invention, when the worm gear 105 rotates, it drives the gear 203 to rotate as well. Through the meshing of the gear 203 and the rack portion 202, the rotational motion is converted into the horizontal linear motion of the anti-detachment plate 2.

[0050] The anti-detachment plate 2 is U-shaped. When it moves horizontally, the open end of the U-shape will insert into the reserved hole or bottom edge of the cement pole body 5. If the cement pole body 5 accidentally falls off during the lifting process, the anti-detachment plate 2 can support it, playing a safety protection role in preventing it from falling.

[0051] Under normal lifting conditions without any accidents, the anti-detachment plate 2 does not bear the weight of the cement pole.

[0052] In addition, a reinforcing plate 201 is fixed on the carrier plate 1. The anti-detachment plate 2 is slidably engaged with the reinforcing plate 201, which enhances the structural strength of the anti-detachment plate 2 and ensures that it does not deform under stress.

[0053] A lifting plate 206 is also vertically slidably mounted on the clamping plate 101. A synchronizing plate 2011 is fixed to the bottom end of the lifting plate 206, and a locking plate 208 is fixed to each side of the bottom of the synchronizing plate 2011. Each locking plate 208 has multiple locking bars 209 arranged in an arc shape at its bottom. These locking bars 209 cooperate with the locking groove group 1011 formed on the movable clamping plate 102 (located on both sides of the shaft hole 1010).

[0054] A sliding shaft 2010 is slidably mounted on the shaft of gear 203. A pull tube 204 is rotatably mounted on the sliding shaft 2010. A synchronizing tube 205 is fixed on the pull tube 204. Two lifting plates 206 are slidably connected to the synchronizing tube 205.

[0055] In this embodiment of the invention, when the movable clamping plate 102 contacts the cement pole and flips, it stretches the tension spring, allowing it to store elastic potential energy. When the clamping plate 101 moves away from the cement pole and disengages, the tension spring releases the stored potential energy, automatically pulling the movable clamping plate 102 back to its initial position.

[0056] When multiple cement poles of the same specification need to be lifted in a single lifting operation, the locking function can be activated. The locking strip 209, in conjunction with the locking groove assembly 1011, restricts the resetting and flipping of the movable clamping plate 102. In this way, when continuously lifting the same poles, the movable clamping plate 102 can maintain a fixed optimal angle, eliminating the need for adaptive flipping each time, thus improving efficiency and enhancing stability during the lifting process.

[0057] When it is necessary to release the restriction on the movable clamping plate 102, the pull tube 204 is pulled upward by external force. The pull tube 204 drives the sliding shaft 2010, the synchronizing tube 205, the synchronizing plate 2011, the locking plate 208, and the locking bar 209 to rise together, causing the locking bar 209 to disengage from the locking groove assembly 1011. Subsequently, the elastic potential energy of the tension spring can drive the movable clamping plate 102 to freely reset.

[0058] The carrier plate 1 has a movable groove 207 for the horizontal movement of the lifting plate 206.

[0059] In use, the worm gear 106 is driven to rotate by external force. The meshing of the worm gear 106 with the worm wheel 105 drives the worm wheel 105 to rotate. The rotation of the worm wheel 105 drives the transmission disk 103 and the gear 203 to rotate synchronously. When the transmission disk 103 rotates, the transmission plate 104 drives the two clamping plates 101 to move relative to each other. The movement of the clamping plates 101 drives the movable clamping plate 102 to move synchronously. When it reaches the end of its stroke, the movable clamping plate 102 comes into contact with the surface of the cement pole body 5 and clamps the cement pole body 5. At the same time, when the gear 203 rotates, it drives the anti-detachment plate 2 to move horizontally by meshing with the rack part 202, so that the anti-detachment plate 2 is inserted into the cement pole body 5. The lifting force is applied to the hook 302 by the lifting equipment, and then the lifting force is applied to the carrier plate 1 through the hook 302 via the second steel wire rope 301 and the first steel wire rope 3. The cement pole body 5 is lifted by the two clamping plates 101 and the movable clamping plate 102. External force drives the pull tube 204 and the synchronizing tube 205 to rise vertically. The synchronizing tube 205 drives the two lifting plates 206 to rise, thereby raising the synchronizing plate 2011, the locking plate 208, and the locking bar 209. The locking bar 209 is then pulled out from the locking groove assembly 1011, releasing the restriction on the movable clamping plate 102. At the same time, the elastic potential energy stored in the spring (tension spring) during the clamping and flipping of the movable clamping plate 102 is used to drive the movable clamping plate 102 to return to its original position.

[0060] Example 2: The difference between this example and Example 1 is that the gripping mechanism can adopt a scissor-type structure, which includes a first gripping arm 6 and a second gripping arm 601, which are rotatably connected by a pin to form an X-shaped linkage mechanism.

[0061] Both the first clamping arm 6 and the second clamping arm 601 are rotatably connected to a flipping chuck 602 at their ends, and the ends of the first clamping arm 6 and the second clamping arm 601 away from the flipping chuck 602 are connected to the first wire rope 3.

[0062] In this embodiment of the invention, when the lifting equipment lifts the No. 2 steel wire rope 301 and the No. 1 steel wire rope 3, it will drive the No. 1 clamping arm 6 and the No. 2 clamping arm 601 to close like scissors, thereby driving the two flipping clamps 602 to move towards each other and clamp the cement pole body 5.

[0063] In this embodiment, the flipping chuck 602 is similar in structure and function to the movable chuck 102 in the first embodiment, both of which can adaptively rotate to fit the conical surface of the cement pole.

[0064] This embodiment has a simpler structure, but its clamping point is usually not on the center of gravity axis of the concrete pole. This can lead to uneven force on both sides of the hook ring of the No. 2 steel wire rope 301 formed by the fixing block, which in turn can cause the concrete pole to tilt or even slip during lifting. Therefore, this embodiment must be used in conjunction with a center of gravity adjustment mechanism.

[0065] The center of gravity adjustment mechanism includes a main frame 7 connected to the lifting equipment. A bearing box 701 is slidably installed inside the main frame 7. A first adjusting wheel 702 and two second adjusting wheels 703 are rotatably installed inside the bearing box 701.

[0066] The carrier box 701 is arranged in a triangle, with the first adjusting wheel 702 rotatably installed at the top corner and the two second adjusting wheels 703 rotatably installed at the other two corners.

[0067] The main hanger 7 is equipped with a force-locking assembly that works in conjunction with the first adjusting wheel 702 and the second adjusting wheel 703.

[0068] The force-locking assembly includes a first locking block 706 fixed to the bottom inner side of the main hanger 7. The first locking block 706 cooperates with the first locking groove 708 opened on the first adjusting wheel 702. The main hanger 7 also has a second locking block 707 fixed on both sides. The second locking block 707 cooperates with the second locking groove 709 opened on the second adjusting wheel 703.

[0069] Two guide rods 704 are fixed on both sides of the main hanger 7. Springs 705 are fitted on all four guide rods 704. One end of the spring 705 is fixed to the main hanger 7, and the other end is fixed to the bearing box 701.

[0070] In the embodiments of the present invention, please refer to Figure 16The No. 2 steel wire rope 301 is attached to the No. 1 adjusting wheel 702, and is guided and limited by the two No. 2 adjusting wheels 703.

[0071] When the gripping mechanism has completed clamping but has not yet lifted, the No. 2 wire rope 301 is in a slack state. When the lifting equipment starts working, the main lifting frame 7 is lifted first, and the main lifting frame 7 pushes the bearing box 701 to rise together through the compressed spring 705.

[0072] Please see Figure 13 The No. 2 steel wire rope 301 and the cement pole form a triangle. As the lifting force increases, the No. 2 steel wire rope 301 gradually tightens and automatically finds the force equilibrium point (i.e., the theoretical vertex of the triangle). During this process, the three pulleys will rotate freely to assist the load box 701 in sliding to the equilibrium position within the main hanger 7.

[0073] The adaptive adjustment process requires tautness of the second wire rope 301, and then a lifting force is applied to the second wire rope 301 to make the force on both ends of the second wire rope 301 the same. This process is to make the main hanger 7 and the bearing box 701 slide to the highest position by tautness of the second wire rope 301.

[0074] During this adjustment phase, spring 705 is compressed, absorbing most of the lifting force and preventing the cement pole from being lifted prematurely. This also ensures that wire rope 301 is fully taut for leveling. When spring 705 is fully compressed and the bottom of the bearing box 701 contacts the support 7010 of the main lifting frame 7, the entire lifting force of the hoisting equipment is directly transmitted to the cement pole through the bearing box 701, pulley block, wire rope 3, and gripping mechanism, officially commencing the hoisting operation.

[0075] When the support box 701 is firmly seated on the support section 7010, all locking blocks (locking block 706 and locking block 707) will engage in their corresponding locking grooves (locking groove 708 and locking groove 709), locking all pulleys and preventing them from rotating. In particular, the conical design of locking block 706 and its anti-slip layer tightly press against the second steel wire rope 301 on the first adjusting wheel 702, generating significant friction and preventing the wire rope from slipping within the pulley groove. This completely locks the entire system, preventing the concrete pole from losing control or falling during hoisting due to changes in the center of gravity or swaying.

[0076] The technical effect of this embodiment is that it allows the gripping mechanism to clamp the cement pole at any position. During lifting, the center of gravity adjustment mechanism can automatically adjust and find the balance point, so that the cement pole can automatically maintain an ideal horizontal posture after being lifted, consistent with its state before lifting.

[0077] In use, place the two No. 2 clamping arms 601, the No. 1 clamping arm 6, and the flipping chuck 602 on the cement pole body 5. Then, start the lifting equipment to lift the main gantry 7. The main gantry 7 drives the bearing box 701 on it to rise, so that the No. 2 steel wire rope 301 is taut.

[0078] In this initial stage, spring 705 is compressed, absorbing most of the lifting force. This serves two purposes: first, to prevent the concrete pole body 5 from being lifted too early; and second, to ensure that the No. 2 steel wire rope 301 is fully taut for leveling.

[0079] When the spring 705 is fully compressed and the bottom of the bearing box 701 contacts the support part 7010 of the main hanger 7, the entire lifting force of the lifting equipment will be directly transmitted to the cement pole through the bearing box 701, pulley block, No. 1 wire rope 3 and gripping mechanism, and the lifting work will officially begin.

[0080] The lifting force of the lifting equipment is transmitted to the first clamp arm 6 and the second clamp arm 601 through the second wire rope 301, which drives the two to rotate around the cross axis, thereby driving the flipping chuck 602 to close, clamping the cement pole body 5, and finally lifting it up.

[0081] In summary, this invention relates to a stable lifting device for cement poles, aiming to solve the problems of unstable clamping and easy tilting in traditional methods. The core of this lifting device consists of three main mechanisms: the gripping mechanism uses a self-locking worm gear drive to drive the clamping plate, and its V-shaped adaptive chuck can automatically deflect to perfectly fit cement poles of different tapers, achieving surface contact and ensuring a firm grip; it also includes an anti-detachment plate as a safety precaution. The center-of-gravity adjustment mechanism is the key technology. Through a pulley system and spring system, it automatically finds the balance point at the beginning of lifting, leveling the cement pole, and then automatically locks the entire system to ensure absolute stability during the lifting process. In addition, a simpler scissor-type gripper is provided as an alternative. This lifting device integrates adaptive clamping, automatic leveling, anti-detachment protection, and efficient self-locking, significantly improving the safety, stability, and efficiency of cement pole lifting operations.

[0082] On the other hand, the present invention also provides a method for lifting a stable cement pole, using the aforementioned stable cement pole lifting device, comprising the following steps: Step 1: Clamp and fix the cement pole body using the gripping mechanism; Step 2: Apply lifting force through the lifting equipment, and the center of gravity adjustment mechanism will use this lifting force to adaptively move to the center position to ensure the stability of the lifting; Step 3: Use the lifting force of the hoisting equipment to lift the cement pole body, ensuring that the cement pole body remains in the same state before and after lifting.

[0083] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0084] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A lifting device for stabilizing cement poles, characterized in that, include: Two No. 1 steel wire ropes (3) are fixed together by a No. 2 steel wire rope (301), and the No. 2 steel wire rope (301) is connected to the lifting equipment; The gripping mechanism is connected to the No. 1 steel wire rope (3). The gripping mechanism clamps and fixes the cement pole body (5) which is shaped like a frustum. The lifting equipment lifts the cement pole body (5) through the No. 2 steel wire rope (301) and the No. 1 steel wire rope (3). The center of gravity adjustment mechanism connects the lifting equipment to the No. 2 steel wire rope (301) through the center of gravity adjustment mechanism. The center of gravity adjustment mechanism adjusts the posture of the cement pole body (5) so that it does not change during the lifting process.

2. The lifting device for stabilizing cement poles according to claim 1, characterized in that, The gripping mechanism includes two carrier plates (1), and each end of the two carrier plates (1) is fixed with a connecting ring. The carrier plates (1) are connected to the No. 1 steel wire rope (3) through the two connecting rings. The bottom of the carrier plate (1) has two clamping plates (101) that are slidably installed in opposite directions along the length direction. Both clamping plates (101) are connected to the clamping assembly installed on the carrier plate (1). Both clamping plates (101) are equipped with adaptive deflection clamping elements; The carrier plate (1) is also equipped with anti-detachment components to prevent the carrier plate (1) from falling during the lifting process.

3. The lifting device for stabilizing cement poles according to claim 2, characterized in that, The clamping assembly includes a transmission disk (103) rotatably mounted on the bottom of the carrier plate (1), and transmission plates (104) are rotatably mounted on both ends of the transmission disk (103). The transmission plates (104) are rotatably connected to two clamping plates (101) respectively. A worm gear (105) is coaxially fixed on the transmission disc (103), and a worm (106) is rotatably mounted on one side of the worm gear (105) to cooperate with it.

4. The lifting device for stabilizing cement poles according to claim 3, characterized in that, The adaptive deflection clamping member includes a flip groove (108) opened on the clamping plate (101), a movable clamping plate (102) is provided in the flip groove (108), a rotating shaft (109) is fixed in the flip groove (108), and the movable clamping plate (102) is rotatably connected to the rotating shaft (109) through a shaft hole (1010) opened on the movable clamping plate (102); The movable clamp (102) includes a V-shaped clamp, a carrier plate fixed on one side of the clamp, a shaft hole (1010) on the carrier plate, and two pull claws integrally formed thereon on the side of the carrier plate away from the clamp. Hooks (107) are fixed to the bottom of the claw and the clamping plate (101). The hooks (107) on the clamping plate (101) and the hooks (107) at the bottom of the claw are connected by a tension spring.

5. A lifting device for stabilizing cement poles according to claim 4, characterized in that, The anti-detachment component includes an anti-detachment plate (2) that is slidably mounted on the carrier plate (1). The anti-detachment plate (2) is provided with a rack portion (202), which meshes with a gear (203) that is coaxially fixed on the worm gear (105).

6. The lifting device for stabilizing cement poles according to claim 5, characterized in that: A lifting plate (206) is also vertically and slidably mounted on the clamping plate (101). A locking groove group (1011) is fixed at the bottom end of the lifting plate (206). Locking plates (208) are fixed on both sides of the bottom of the locking groove group (1011). Multiple locking strips (209) arranged in an arc are fixed at the bottom of the locking plate (208). The locking strips (209) cooperate with the locking groove group (1011) opened on the movable clamping plate (102) and located on both sides of the shaft hole (1010). A sliding shaft (2010) is slidably mounted on the shaft of the gear (203), a pull tube (204) is rotatably mounted on the sliding shaft (2010), a synchronizing tube (205) is fixed on the pull tube (204), and two lifting plates (206) are slidably connected to the synchronizing tube (205).

7. The lifting device for stabilizing cement poles according to claim 1, characterized in that, The gripping mechanism includes a first gripping arm (6) and a second gripping arm (601) rotatably connected to the first gripping arm (6), forming a scissor fork through the first gripping arm (6) and the second gripping arm (601); The ends of the first clamping arm (6) and the second clamping arm (601) are rotatably connected to a flipping clamp (602), and the ends of the first clamping arm (6) and the second clamping arm (601) away from the flipping clamp (602) are connected to the first wire rope (3).

8. A lifting device for stabilizing cement poles according to claim 7, characterized in that, The center of gravity adjustment mechanism includes a main frame (7) connected to the lifting equipment. A bearing box (701) is slidably installed inside the main frame (7). A first adjusting wheel (702) and two second adjusting wheels (703) are rotatably installed inside the bearing box (701). The carrier box (701) is arranged in a triangle, with the first adjusting wheel (702) rotatably installed at the top corner and the two second adjusting wheels (703) rotatably installed at the other two corners; The main hanger (7) is equipped with a force-locking assembly that cooperates with the first adjusting wheel (702) and the second adjusting wheel (703).

9. A lifting device for stabilizing cement poles according to claim 8, characterized in that, The force-locking assembly includes a first locking block (706) fixed to the bottom inner side of the main hanger (7), the first locking block (706) cooperating with the first locking groove (708) opened on the first adjusting wheel (702), and a second locking block (707) fixed on both sides of the main hanger (7), the second locking block (707) cooperating with the second locking groove (709) opened on the second adjusting wheel (703); Two guide rods (704) are fixed on both sides of the main hanger (7). Springs (705) are fitted on all four guide rods (704). One end of the spring (705) is fixed to the main hanger (7), and the other end is fixed to the carrier box (701).

10. A method for lifting a stable cement pole, employing a stable cement pole lifting device as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Clamp and fix the cement pole body (5) using the gripping mechanism; Step 2: Apply lifting force through the lifting equipment, and the center of gravity adjustment mechanism will use this lifting force to adaptively move to the center position to ensure the stability of the lifting; Step 3: Lift the cement pole body (5) using the lifting force of the lifting equipment, and the state of the cement pole body (5) before and after being lifted is the same.

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