Large-bending-moment concrete pole lifting appliance

Abstract

The invention relates to the technical field of electric pole hoisting, in particular to a large-bending-moment concrete electric pole hoisting tool. Comprising a lifting arm, two electric sliding seats which are symmetrically connected to the lifting arm left and right in a sliding mode, a winding mechanism arranged on the lower portions of the electric sliding seats and a lifting clamping jaw arranged on the lower portion of the winding mechanism, and the upper portions of the two electric sliding seats are jointly provided with a first stretching type multi-point auxiliary lifting mechanism. Two front and back corresponding auxiliary wing rods in the first stretching type multi-point auxiliary lifting mechanism rotate and stretch out to drive an auxiliary inhaul cable to pull a lifting clamping jaw in the front and back longitudinal direction, so that a lifting point is expanded to the front and back longitudinal direction from the single vertical direction, and meanwhile, the auxiliary wing rods, the auxiliary inhaul cable and the lifting clamping jaw form a triangular limiting structure; therefore, the stress of the concrete pole is effectively dispersed, the concrete pole is stably supported from different directions in the hoisting process, the problems of non-uniform stress and low stability caused by a single hoisting point are avoided, and the hoisting stability is remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pole hoisting, and specifically to a large bending moment concrete pole sling. Background Art

[0002] A large bending moment concrete pole is a type of concrete pole designed to withstand large bending moment loads. It is one of the main structures used in the power industry to support power transmission lines, and is typically used in power transmission systems that need to withstand large lateral loads or operate in harsh environmental conditions, such as high wind speed areas, strong earthquake zones, or where power lines span relatively wide areas. The large bending moment concrete pole has good load-bearing capacity, stability, and durability, is suitable for various climate conditions, and can withstand long-term external loads. It is an economical and durable power facility.

[0003] After the production and molding of large bending moment concrete poles (hereinafter referred to as concrete poles), they are generally transported from the production line to a centralized storage point for temporary storage. This operation requires the use of a sling to lift and transfer the concrete poles. However, traditional slings have a relatively small number of lifting points, usually only one or two, and the slings used typically employ vertical cable lifting points. This causes the stress on the concrete pole to be mainly concentrated in the vertical direction, resulting in limited limiting effect on the concrete pole during hoisting. Especially for longer concrete poles, it is extremely easy to cause significant swaying of the concrete pole during hoisting, affecting the stability of the concrete pole during hoisting and further affecting the safe transportation of the concrete pole. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a large bending moment concrete pole hanger, including a boom, two electric slides symmetrically and slidably connected to the boom, a winding mechanism arranged at the lower part of the electric slide, and a lifting clamp arranged at the lower part of the winding mechanism, the upper parts of the two electric slides are jointly provided with an extendable multi-point auxiliary lifting mechanism for performing three-point limiting on the lifting clamp to enhance the lifting stability of the concrete pole, the extendable multi-point auxiliary lifting mechanism includes a mounting seat fixedly connected to the upper end surface of the electric slide and located directly above the lifting clamp, the mounting seat is symmetrically connected to a rotating shaft in front and back rotation, the upper end of the rotating shaft is fixedly connected to an auxiliary wing rod, and the auxiliary wing rod is provided with vertically distributed rope holes The auxiliary wing rod is provided with an electric winding auxiliary drum, and the outside of the electric winding auxiliary drum is wrapped with an auxiliary cable, and the end of the auxiliary cable away from the electric winding auxiliary drum passes through the rope hole and is fixedly connected to the outside of the lifting clamp, and the mounting seat is provided with a coupling assembly for driving the front and rear corresponding rotating shafts to rotate in different directions, and a locking assembly is commonly provided between the coupling assembly and the auxiliary wing rod for locking and limiting the auxiliary cable when the auxiliary wing rod is unfolded, and an extendable multi-point auxiliary lifting mechanism 2 with the same structure as the extendable multi-point auxiliary lifting mechanism 1 is commonly provided on the upper parts of the two electric slides, and the extendable multi-point auxiliary lifting mechanism 2 is used to be mounted on the outside of the concrete pole to increase the lifting points, thereby further enhancing the lifting stability of the concrete pole.

[0005] In one possible implementation, the coupling assembly includes a T-shaped push seat, a gear ring and a rack. A slide groove group is provided on the upper end surface of the mounting seat. A T-shaped push seat is slidably connected in the slide groove group and between two adjacent front and rear rotating shafts. A gear ring is fixedly connected to the outside of the rotating shaft. Racks meshing with the corresponding gear rings are fixedly connected to the front and rear sides of the T-shaped push seat.

[0006] In one possible implementation, the boom is provided with a driving portion for pushing the T-shaped push seat to move toward each other, the driving portion includes a T-shaped plate fixedly connected to the upper cavity wall of the boom, two spline cylinders are connected to the transverse section of the T-shaped plate for symmetrical rotation front and back, the interior of the spline cylinder is connected to a spline shaft by spline matching, a driving motor is fixedly connected to the T-shaped plate via a connecting plate, the output shaft of the driving motor and the two spline cylinders are connected to each other by a pulley assembly, one end of the spline shaft away from the T-shaped plate is fixedly connected to a screw, the other end of the screw away from the spline shaft is rotatably connected to the T-shaped push seat, and the upper end face of the T-shaped push seat is fixedly connected to a nut plate threadedly connected to the screw.

[0007] In a possible implementation, the locking component includes a transverse groove formed in the auxiliary wing rod and communicating with the rope hole. A push rod is slidably connected in the transverse groove. A return spring is fixedly connected between the push rod and the transverse groove. One end of the push rod located in the transverse groove is fixedly connected with a wedge-shaped top block for pushing and jamming the auxiliary cable. The upper end surface of the T-shaped pushing seat is fixedly connected with a contact pressing block for cooperating with the end of the push rod located outside the transverse groove. The front and rear ends of the contact pressing block are symmetrically provided with cooperating inclined surfaces.

[0008] In a possible implementation, an embedding groove communicating with the transverse groove and used for cooperating with the wedge-shaped top block is formed inside the auxiliary wing rod. The vertical cross-section of the embedding groove is a right trapezoid. The inclined groove wall in the embedding groove is parallel to the inclined surface of the wedge-shaped top block and is respectively located on the left and right sides of the corresponding rope hole.

[0009] In a possible implementation, a limiting stop block for limiting the moving stroke of itself is fixedly connected to one end of the spline shaft away from the corresponding screw.

[0010] In a possible implementation, the two mounting seats in the first extended multi-point auxiliary lifting mechanism are located between the two mounting seats in the second extended multi-point auxiliary lifting mechanism. A gantry connecting frame is fixedly connected to the upper end surfaces of the two T-shaped pushing seats on the same electric sliding seat.

[0011] In a possible implementation, a strip-shaped supporting belt is fixedly connected to the lower ends of the two auxiliary cables corresponding to the front and rear in the second extended multi-point auxiliary lifting mechanism.

[0012] In a possible implementation, a collar is slidably sleeved outside the two auxiliary cables corresponding to the front and rear in the second extended multi-point auxiliary lifting mechanism. An auxiliary rope is fixedly connected between the front and rear collars. The auxiliary rope is located above the strip-shaped supporting belt.

[0013] In a possible implementation, notch grooves for allowing the auxiliary cables in the first extended multi-point auxiliary lifting mechanism to be placed are formed on both the front and rear sides of the electric sliding seat.

[0014] From the above technical solutions, it can be seen that the present invention has the following advantages:

[0015] 1. In the present invention, the two auxiliary wing rods corresponding to the front and rear in the first extended multi-point auxiliary lifting mechanism rotate and extend, driving the auxiliary cables to longitudinally pull the lifting claw from the front and rear, thereby expanding the lifting points from a single vertical direction to the front and rear longitudinal directions. At the same time, the auxiliary wing rods, the auxiliary cables and the lifting claw form a triangular limiting structure, effectively dispersing the force on the concrete pole, ensuring that the concrete pole is stably supported from different directions during the lifting process, avoiding the problems of uneven force and low stability caused by a single lifting point, significantly improving the stability of the lifting, and further improving the safety of the entire lifting process.

[0016] 2. In the present invention, through the rotational deployment of the auxiliary wing rods in the extended multi-point auxiliary lifting mechanism II, the auxiliary stay cables in the transverse direction are driven to approach and move towards each other, so that the strip-shaped support belt supports the lower part of the concrete pole, thereby increasing the number of lifting points, further ensuring a more uniform distribution of the force on the concrete pole, and further improving the stability of the lifting of the concrete pole and the stability and safety during the hoisting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0019] Figure 2 It is Figure 1 an enlarged schematic diagram of the structure of part A in

[0020] Figure 3 It is a structural schematic diagram of the driving part, the extended multi-point auxiliary lifting mechanism I and the extended multi-point auxiliary lifting mechanism II of the present invention.

[0021] Figure 4 It is Figure 3 an enlarged schematic diagram of the structure of part B in

[0022] Figure 5 It is a structural schematic diagram of the extended multi-point auxiliary lifting mechanism I and the extended multi-point auxiliary lifting mechanism II of the present invention.

[0023] Figure 6 It is a cross-sectional schematic diagram of the locking component of the present invention.

[0024] Among them, the above-mentioned drawings include the following reference numerals:

[0025] 1. Boom; 2. Electric sliding seat; 3. Lifting clamp; 4. Extended multi-point auxiliary lifting mechanism I; 41. Mounting seat; 42. Auxiliary wing rod; 43. Electric winding auxiliary drum; 44. Auxiliary stay cable; 45. Linkage assembly; 451. T-shaped pushing seat; 452. Ring gear; 453. Rack; 46. Locking component; 461. Transverse groove; 462. Thrust rod; 463. Wedge-shaped top block; 464. Touching block; 5. Extended multi-point auxiliary lifting mechanism II; 6. Driving part; 61. T-shaped plate; 62. Spline barrel; 63. Spline shaft; 64. Pulley assembly; 65. Driving motor; 66. Screw; 67. Nut plate; 7. Gantry connecting frame; 8. Strip-shaped support belt; 9. Auxiliary rope. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0027] Please refer to Figure 1 and Figure 3 , a large bending moment concrete pole lifting device, including a lifting arm 1, two electric sliding seats 2 symmetrically slidably connected to the left and right on the lifting arm 1, a winding mechanism provided at the lower part of the electric sliding seat 2, and a lifting clamp 3 provided at the lower part of the winding mechanism. An extended multi-point auxiliary lifting mechanism 4 for three-point limiting of the lifting clamp 3 to enhance the lifting stability of the concrete pole is commonly provided on the upper parts of the two electric sliding seats 2.

[0028] Please refer to Figure 1 , Figure 3 , Figure 5 and Figure 6 , the extended multi-point auxiliary lifting mechanism 4 includes a mounting seat 41 fixedly connected to the upper end face of the electric sliding seat 2 and located directly above the lifting clamp 3. Rotating shafts are symmetrically rotatably connected to the front and rear of the mounting seat 41. The upper ends of the rotating shafts are fixedly connected with auxiliary wing rods 42. Support rods corresponding to the auxiliary wing rods 42 and used for supporting the bottom of the unfolded auxiliary wing rods 42 are fixedly connected to both the front and rear sides of the mounting seat 41. Vertical distribution rope holes are provided on the auxiliary wing rods 42. An electric winding auxiliary cylinder 43 is provided on the auxiliary wing rods 42. An auxiliary cable 44 is wound and connected to the outside of the electric winding auxiliary cylinder 43. One end of the auxiliary cable 44 away from the electric winding auxiliary cylinder 43 passes through the rope hole and is fixedly connected to the outside of the lifting clamp 3. A coupling rotation assembly 45 for driving the front and rear corresponding rotating shafts to rotate in opposite directions is provided on the mounting seat 41. A locking and limiting assembly 46 for locking and limiting the auxiliary cable 44 when the auxiliary wing rods 42 are unfolded is commonly provided between the coupling rotation assembly 45 and the auxiliary wing rods 42. Notch grooves for allowing the auxiliary cables 44 in the extended multi-point auxiliary lifting mechanism 4 to be placed are provided on both the front and rear sides of the electric sliding seat 2. The coupling rotation assembly 45 includes a T-shaped pushing seat 451, a gear ring 452, and a rack 453. A chute group is provided on the upper end face of the mounting seat 41. A T-shaped pushing seat 451 is slidably connected in the chute group and between the front and rear adjacent rotating shafts. Gear rings 452 are fixedly connected to the outside of the rotating shafts. Racks 453 meshing with the corresponding gear rings 452 are fixedly connected to both the front and rear sides of the T-shaped pushing seat 451.

[0029] Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6A driving portion 6 for pushing the T-shaped push seat 451 to move toward each other is provided in the boom 1. The driving portion 6 includes a T-shaped plate 61 fixedly connected to the upper cavity wall of the boom 1. Two spline cylinders 62 are symmetrically connected to the transverse section of the T-shaped plate 61 for rotation. The interior of the spline cylinder 62 is connected with a spline shaft 63 by spline matching. A driving motor 65 is fixedly connected to the T-shaped plate 61 through a connecting plate. The output shaft of the driving motor 65 and the two spline cylinders 62 are connected to each other through a pulley assembly 64. The end of the spline shaft 63 away from the T-shaped plate 61 is fixedly connected to a screw 66, and the end of the screw 66 away from the spline shaft 63 is rotationally connected to the T-shaped push seat 451. A nut plate 67 threadedly connected to the screw 66 is fixedly connected to the upper end surface of the T-shaped push seat 451, and a limit stopper for limiting its own moving stroke is fixedly connected to the end of the spline shaft 63 away from the corresponding screw 66.

[0030] The initial state of the extendable multi-point auxiliary lifting mechanism 4 is: the auxiliary wing rod 42 is retracted into the inside of the boom 1 and is parallel to the boom 1; the electric slide 2 is controlled to slide along the boom 1, and the electric slide 2 will also drive the mounting seat 41 and the T-shaped sliding seat 451 to move while sliding, and the T-shaped sliding seat 451 then drives the spline shaft 63 to move horizontally, so that the spline shaft 63 slides in the spline cylinder 62, until it drives the lifting clamp 3 to move to the upper part of the concrete pole, and adjusts the two lifting clamps 3 to move to the appropriate position according to the length of the concrete pole, and then controls the winding mechanism to move the lifting clamp 3 downward, and when the lifting clamp 3 moves downward and contacts the concrete pole, controls the lifting clamp 3 to clamp the concrete pole, and then controls the winding mechanism to move the lifting clamp 3 upward, and the lifting clamp 3 then drives the concrete pole to rise a short distance.

[0031] Immediately control the operation of the driving motor 65. The driving motor 65 drives the spline cylinder 62 to rotate through the pulley assembly 64. The spline cylinder 62 then drives the spline shaft 63 to rotate. The spline shaft 63 then drives the screw 66 to rotate. During the rotation of the screw 66, it interacts with the nut plate 67 and thus moves horizontally. The screw 66 then pushes the T-shaped pushing seat 451 to move in the direction away from the driving motor 65. The T-shaped pushing seat 451 simultaneously drives the rack 453 to move. The rack 453 then drives the rotating shaft to rotate through the gear ring 452. The rotating shaft then drives the auxiliary wing rod 42 to rotate, causing the auxiliary wing rod 42 to gradually extend from the boom 1. The auxiliary wing rod 42 simultaneously drives the auxiliary cable 44 to move until the auxiliary wing rod 42 completely extends from the boom 1. At this time, the auxiliary wing rod 42 and the boom 1 are perpendicular to each other on the horizontal plane. The horizontal longitudinal section of the T-shaped pushing seat 451 abuts against the outside of the gear ring 452. A triangular structure is formed by using the two completely extended auxiliary wing rods 42 and the two auxiliary cables 44 respectively connected to the front and rear sides of the lifting clamp 3, realizing the longitudinal spread of multiple lifting points and lifting the electric pole from multiple directions to ensure the stability during the lifting of the electric pole. It should be noted that the winding mechanism and the lifting clamp 3 are both prior arts.

[0032] Please refer to Figure 3 、 Figure 5 and Figure 6 As shown in, the locking component 46 includes a transverse groove 461 opened in the auxiliary wing rod 42 and communicating with the rope hole. A push rod 462 is slidably connected in the transverse groove 461. A return spring is fixedly connected between the push rod 462 and the transverse groove 461. One end of the push rod 462 located in the transverse groove 461 is fixedly connected with a wedge-shaped top block 463 for pushing and jamming the auxiliary cable 44. A touch block 464 for cooperating with the end of the push rod 462 located outside the transverse groove 461 is fixedly connected to the upper end surface of the T-shaped pushing seat 451. The front and rear ends of the touch block 464 are symmetrically provided with cooperating inclined surfaces. An embedding groove communicating with the transverse groove 461 and used for cooperating with the wedge-shaped top block 463 is opened inside the auxiliary wing rod 42. The vertical cross-section of the embedding groove is a right trapezoid. The inclined groove wall in the embedding groove is parallel to the inclined surface of the wedge-shaped top block 463 and is respectively located on the left and right sides of the corresponding rope hole.

[0033] While the auxiliary wing rod 42 gradually extends from the boom 1 as it rotates around the rotating shaft, it also drives the top rod 462 to rotate. During the opposite rotation of the front and rear top rods 462, they simultaneously press against the corresponding mating inclined surfaces on the contact pressure block 464. The top rod 462 is pushed by the contact pressure block 464 and moves into the transverse groove 461. The top rod 462 synchronously drives the wedge-shaped top block 463 to move, and the return spring is compressed. During the movement of the wedge-shaped top block 463 along the transverse groove 461, it slowly presses against the auxiliary cable 44. When the auxiliary wing rod 42 is fully deployed from the boom 1, the wedge-shaped top block 463 presses against the auxiliary cable 44 and enters the embedding groove. The inclined surface of the wedge-shaped top block 463 cooperates with the inclined groove wall in the embedding groove to jointly clamp the auxiliary cable 44, thereby locking and limiting the auxiliary cable 44 after the auxiliary wing rod 42 is deployed.

[0034] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , on the upper parts of two electric sliders 2, there is jointly provided an extensible multi-point auxiliary lifting mechanism two 5 with the same structure as the extensible multi-point auxiliary lifting mechanism one 4. The extensible multi-point auxiliary lifting mechanism two 5 is used to be sleeved outside the concrete pole to increase the lifting points and further enhance the lifting stability of the concrete pole. The two mounting seats 41 in the extensible multi-point auxiliary lifting mechanism one 4 are located between the two mounting seats 41 in the extensible multi-point auxiliary lifting mechanism two 5. The upper end surfaces of the two T-shaped pushing seats 451 on the same electric slider 2 are jointly fixedly connected with a gantry connecting frame 7. The lower ends of the two auxiliary cables 44 corresponding to each other in the front and back in the extensible multi-point auxiliary lifting mechanism two 5 are jointly fixedly connected with a strip-shaped supporting belt 8. A collar is jointly sleeved outside the two auxiliary cables 44 corresponding to each other in the front and back in the extensible multi-point auxiliary lifting mechanism two 5, and an auxiliary rope 9 is jointly fixedly connected between the front and back collars. The auxiliary rope 9 is located above the strip-shaped supporting belt 8.

[0035] While the screw rod 66 pushes the T-shaped pushing seat 451 in the extended multi-point auxiliary lifting mechanism 4 to move, the T-shaped pushing seat 451 will also drive the T-shaped pushing seat 451 in the extended multi-point auxiliary lifting mechanism 5 to move through the portal connecting frame 7. Then, the extended multi-point auxiliary lifting mechanism 5 repeats the operating actions of the above-mentioned extended multi-point auxiliary lifting mechanism 4. The auxiliary wing rods 42 in the extended multi-point auxiliary lifting mechanism 5 gradually rotate outwards. The end of the auxiliary wing rod 42 far from the corresponding rotating shaft gradually moves closer to the hoisting jaw 3. As the front and rear auxiliary wing rods 42 gradually unfold, the ends connected with the auxiliary cables 44 move away from each other. The auxiliary cables 44 will pull the strip-shaped supporting belt 8 to gradually move upwards, so that the strip-shaped supporting belt 8 contacts the lower surface of the electric pole. Until the auxiliary wing rods 42 are fully unfolded, the included angle between the front and rear auxiliary cables 44 will gradually increase as the auxiliary wing rods 42 unfold. Furthermore, the collar moves downwards, and the collar will drive the auxiliary rope 9 to move downwards, so that the auxiliary rope 9 is sleeved on the upper part of the outer wall of the electric pole. By the above operations, the number of lifting points of the electric pole is increased, and the stability during the hoisting of the electric pole is improved. Then, control the overall movement of the boom 1, and then control the movement of the electric slide 2 in the boom 1 to finely adjust the position of the electric pole, so that the electric pole is stably hoisted to the designated position.

[0036] After the electric pole is stably hoisted above the designated position, control the driving motor 65 to operate to drive the pulley assembly 64 to rotate in the reverse direction. The pulley assembly 64 then drives the screw rod 66 to reverse through the spline barrel 62 and the spline shaft 63. The screw rod 66 then cooperates with the nut plate 67 to drive the T-shaped pushing seat 451 to move closer to the driving motor 65, thereby indirectly causing the auxiliary wing rods 42 to gradually retract into the boom 1. Finally, control the operation of the winding mechanism to lower the hoisting jaw 3, and the concrete electric pole can be lowered to the designated position.

[0037] Please refer to Figures 1 - 6 , during operation, control the two electric slides 2 to move towards each other according to the specific length of the concrete electric pole. The electric slides 2 then drive the hoisting jaw 3 to move to a suitable position through the winding mechanism. Then, control the hoisting jaw 3 to move downwards through the winding mechanism. After the hoisting jaw 3 clamps the electric pole, then use the winding mechanism to drive the hoisting jaw 3 to move upwards to lift the electric pole. Subsequently, control the driving and pushing part 6 to operate. The driving and pushing part 6 drives the extended multi-point auxiliary lifting mechanism 4 and the extended multi-point auxiliary lifting mechanism 5 to operate. The extended multi-point auxiliary lifting mechanism 4 hoists the electric pole from multiple directions, and at the same time, the extended multi-point auxiliary lifting mechanism 5 assists in hoisting the electric pole, increasing the number of lifting points of the electric pole, so as to ensure the stable hoisting of the electric pole. Finally, control the movement of the boom 1 to drive the electric pole to move to the designated position.

[0038] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "length", "upper", "lower", "front", "rear", "left", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention. In addition, in the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A large bending moment concrete pole hanger, comprising a boom, two electric slides symmetrically slidably connected to the boom, a winding mechanism disposed at the bottom of the electric slides, and a hoisting clamp disposed at the bottom of the winding mechanism, characterized in that: The upper parts of the two electric slides are commonly provided with a stretchable multi-point auxiliary lifting mechanism 1 for performing three-point limiting on the lifting claws to enhance the stability of the concrete pole lifting; The stretchable multi-point auxiliary lifting mechanism comprises a mounting seat fixedly connected to the upper end surface of the electric slide and located directly above the lifting clamp, the mounting seat is connected with a rotating shaft symmetrically rotating front and back, the upper end of the rotating shaft is fixedly connected with an auxiliary wing rod, the auxiliary wing rod is provided with vertically distributed rope holes, the auxiliary wing rod is provided with an electric winding auxiliary cylinder, the outside of the electric winding auxiliary cylinder is wound with an auxiliary cable, and the end of the auxiliary cable away from the electric winding auxiliary cylinder passes through the rope hole and is fixedly connected to the outside of the lifting clamp; The mounting seat is provided with a coupling assembly for driving the corresponding front and rear rotating shafts to rotate in different directions, and a locking assembly is provided between the coupling assembly and the auxiliary wing rod for locking and limiting the auxiliary cable when the auxiliary wing rod is deployed; The upper part of the two electric slides is commonly provided with an extendable multi-point auxiliary lifting mechanism 2 having the same structure as the extendable multi-point auxiliary lifting mechanism 1. The extendable multi-point auxiliary lifting mechanism 2 is used to be mounted on the outside of the concrete pole to increase the lifting points, thereby further enhancing the lifting stability of the concrete pole.

2. A large bending moment concrete pole hanger according to claim 1, characterized in that: The coupling assembly includes a T-shaped push seat, a gear ring and a rack. A slide groove group is provided on the upper end surface of the mounting seat. A T-shaped push seat is slidably connected in the slide groove group and between two adjacent rotating shafts in the front and rear directions. A gear ring is fixedly connected to the outside of the rotating shaft. Racks meshing with the corresponding gear rings are fixedly connected to the front and rear sides of the T-shaped push seat.

3. A large bending moment concrete pole hanger according to claim 2, characterized in that: The boom is provided with a driving portion for pushing the T-shaped push seat to move toward each other, the driving portion includes a T-shaped plate fixedly connected to the upper cavity wall of the boom, two spline cylinders are connected to the transverse section of the T-shaped plate for symmetrical rotation front and back, the interior of the spline cylinder is connected to a spline shaft by spline matching, a driving motor is fixedly connected to the T-shaped plate via a connecting plate, the output shaft of the driving motor and the two spline cylinders are connected to each other by a pulley assembly, one end of the spline shaft away from the T-shaped plate is fixedly connected to a screw, and one end of the screw away from the spline shaft is rotatably connected to the T-shaped push seat, and the upper end surface of the T-shaped push seat is fixedly connected to a nut plate threadedly connected to the screw.

4. A large bending moment concrete pole hanger according to claim 2, characterized in that: The locking assembly includes a transverse groove opened in the auxiliary wing rod and connected to the rope hole, a push rod is slidably connected in the transverse groove, a return spring is fixedly connected between the push rod and the transverse groove, one end of the push rod located in the transverse groove is fixedly connected to a wedge-shaped push block for contacting and clamping the auxiliary cable, and the upper end surface of the T-shaped push seat is fixedly connected to a contact block for cooperating with one end of the push rod located outside the transverse groove, and the front and rear ends of the contact block are symmetrically provided with matching inclined surfaces.

5. A large bending moment concrete pole hanger according to claim 4, characterized in that: The auxiliary wing rod is provided with an embedding groove connected with the transverse groove and used to cooperate with the wedge-shaped top block. The vertical section of the embedding groove is a right-angled trapezoid. The inclined groove wall in the embedding groove and the inclined surface of the wedge-shaped top block are parallel to each other and are respectively located on the left and right sides of the corresponding rope hole.

6. A large bending moment concrete pole hanger according to claim 3, characterized in that: One end of the spline shaft away from the corresponding screw rod is fixedly connected with a limit block for limiting its own moving stroke.

7. The large bending moment concrete pole hanger according to claim 2, characterized in that: The two mounting seats in the stretchable multi-point auxiliary lifting mechanism one are located between the two mounting seats in the stretchable multi-point auxiliary lifting mechanism two, and the upper end surfaces of the two T-shaped sliding seats on the same electric slide are fixedly connected with a door-type connecting frame.

8. The large bending moment concrete pole hanger according to claim 1, characterized in that: The lower ends of the two auxiliary cables in the second stretchable multi-point auxiliary suspension mechanism and corresponding to each other are commonly and fixedly connected with a strip support belt.

9. A large bending moment concrete pole hanger according to claim 8, characterized in that: The two auxiliary cables in the second stretchable multi-point auxiliary lifting mechanism and corresponding to each other are slidably sleeved with a ring on the outside, and an auxiliary rope is fixedly connected between the two front and rear rings, and the auxiliary rope is located above the strip support belt.

10. The large bending moment concrete pole hanger according to claim 1, characterized in that: The front and rear sides of the electric slide seat are both provided with notch grooves for inserting the auxiliary cables in the stretchable multi-point auxiliary lifting mechanism.

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