A line stringing and tightening mechanism for electric infrastructure projects and a method of use

Abstract

The application discloses a line stringing and tightening mechanism for electric power infrastructure engineering and a use method, and particularly relates to the technical field of electric power infrastructure engineering, which comprises a small traction machine, a take-up frame and a cable reel, the small traction machine comprises a winding roller and a traction drive machine, the take-up frame comprises a side frame and a base frame, the cable reel comprises a winding drum, a power-assisted drive shaft is rotationally arranged on the base frame, a resistance drive element is fixedly installed at the position corresponding to the end portion of the end portion baffle, and the resistance drive element and the end portion baffle are mutually attached. The auxiliary drive machine drives the power-assisted drive shaft to rotate and further drives the end portion baffle to rotate, thereby forming auxiliary driving of the cable reel, so that the cable reel can automatically rotate to wind the cable, without the need for manual control. The resistance drive element requires a smaller rotating torque and power, is beneficial to field operation, and does not require direct contact operation of personnel in the process, so that the construction is safer.

Description

Technical Field

[0001] This invention relates to the field of power infrastructure engineering technology, and more specifically, to a power infrastructure engineering line stringing tightening mechanism and its usage method. Background Technology

[0002] Power infrastructure projects involve constructing basic power equipment. Laying cables in these projects involves strung between adjacent towers / poles. Initially positioning the cables between the towers / poles is crucial. Because the towers / poles are tall and the cables are heavy, a cable pulling mechanism is used. Drones or manual labor first guide the cable through the towers / poles, then a pulling machine pulls it. Once connected, the cable is gradually pulled onto the towers / poles. To prevent the cable from becoming too slack and drooping to the ground or other structures, a tensioning machine applies resistance from the opposite side of the pulling direction, keeping the cable relatively taut and preventing it from resting on the ground.

[0003] When the cable passes through two overhead line towers / poles, the suspended middle section will sag due to the weight of the cable itself. At this time, it is necessary to use traction equipment to tighten the cable so that the sag value of the cable reaches the preset requirement (the sag value is the vertical distance between the lowest point of the cable between the two overhead line towers / poles and the line connecting its two ends).

[0004] In some open areas, large equipment, such as large tractor winches equipped with hydraulic automatic cable reeling frames, can be used directly. While the winch pulls the cable from the front, the cable reeling frames at the rear wind it up. However, in smaller areas, especially in mountainous or other relatively rugged environments, large equipment cannot be easily moved to the designated location. In such cases, smaller equipment, such as small winches (easy to move and set up), is used to pull the cable and apply tension. At the same time, easy-to-assemble cable racks are used to support the cable reel. While pulling the cable and applying tension, the cable reel is rotated to wind up the cable or wire.

[0005] However, due to the weight of cables and cable reels, it is quite laborious to manually push the reel to rotate and reel in the cable during actual operation. In addition, the cable itself has a certain strength, and if a tight winding is desired when bending and reeling the cable, even greater force is required to push the cable reel to rotate. Similarly, when releasing the cable after it has been tightened, the cable reel also needs to be rotated. In practice, this is quite laborious and has a low safety factor, posing certain safety hazards to construction workers. Summary of the Invention

[0006] The present invention provides a power infrastructure engineering line tensioning mechanism and method, which aims to solve the problem that existing small tensioning devices are laborious to operate by manually pushing the reel to rotate and winding the line, and have a low safety factor.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a power infrastructure engineering line tensioning mechanism, comprising a small traction machine, a take-up frame and a cable reel, the small traction machine comprising a winding roller and a traction drive, the traction drive being used to drive the winding roller to rotate, the take-up frame comprising a side frame and a base frame, the cable reel comprising a winding drum, the winding drum being rotatably mounted on the side frame via a support shaft, and end plates being fixedly connected to both ends of the winding drum;

[0008] An assist drive shaft is rotatably mounted on the base frame. The assist drive shaft is driven to rotate by an auxiliary drive motor. A resistance drive component is fixedly installed at the end of the assist drive shaft at the position corresponding to the end plate. The resistance drive component is a cylindrical structure. The circumference of the resistance drive component is tangent to the circumference of the end plate, and the resistance drive component and the end plate are in close contact with each other, forming resistance between the resistance drive component and the end plate.

[0009] In a preferred embodiment, both the power drive shaft and the resistance drive are configured in two sets. The two sets of resistance drive are symmetrically arranged with the vertical diameter plane of the support shaft as the center of symmetry. A drag shaft frame is slidably mounted on the side frame. The support shaft and the drag shaft frame are rotatably mounted. A lifting device is provided at the bottom of the drag shaft frame and is fixedly mounted on the side frame.

[0010] In a preferred embodiment, the resistance drive component is an airbag-type hollow column. The center of the airbag-type hollow column is fixedly mounted on the power drive shaft. The airbag-type hollow column is filled with gas. When the end baffle contacts the airbag-type hollow column, it compresses the airbag-type hollow column. The power drive shaft is provided with an air hole that communicates with the inner cavity of the airbag-type hollow column. An inflation nozzle is fixedly mounted at the end of the power drive shaft, and the air hole communicates with the inflation nozzle.

[0011] In a preferred embodiment, both ends of the airbag-type hollow column are provided with extrusion discs, which are slidably mounted on the power drive shaft. A threaded collar is provided on the side of the extrusion disc away from the airbag-type hollow column, and the threaded collar is threadedly fitted onto the power drive shaft. A contact limiting component is provided on the side of the end plate corresponding to the extrusion disc.

[0012] In a preferred embodiment, the extrusion disc is fixedly connected to the airbag-type hollow column. A guide sleeve is provided in the middle of the extrusion disc. The guide sleeve is slidably fitted on the power drive shaft. A guide pin is fixedly installed in the guide sleeve. A guide groove is provided on the power drive shaft along the axial direction of the power drive shaft. The guide pin is slidably disposed in the guide groove.

[0013] In a preferred embodiment, the contact limiting component is a set of limiting pins, and the extrusion plate is provided with a set of radial grooves. The radial grooves are distributed along the radial direction of the extrusion plate. A slider is installed on the outside of the limiting pin. The slider is slidably disposed in the radial groove, and an elastic element is provided between the slider and the radial groove. The elastic element is used to keep the slider in the middle position of the radial groove.

[0014] In a preferred embodiment, an adjusting plate is further provided on the outer side of the extrusion plate. The adjusting plate and the extrusion plate are in sliding engagement, and the adjusting plate slides along the axial direction of the extrusion plate. A stud is rotatably installed on the extrusion plate. The stud passes through the adjusting plate and is threadedly engaged with the adjusting plate. A limiting pin passes through the slider and is in sliding engagement with the slider. The end of the limiting pin near the adjusting plate is in radial sliding engagement with the adjusting plate.

[0015] In a preferred embodiment, the airbag-type hollow column further includes a fixing part, which is fixedly mounted on the power drive shaft. Multiple sets of elastic connecting plates are provided between the fixing part and the airbag-type hollow column. The two ends of the elastic connecting plates are fixedly connected to the airbag-type hollow column and the fixing part, respectively. The elastic connecting plates are inclined relative to the diameter line of the airbag-type hollow column, and the elastic connecting plates are elastic metal sheet structures.

[0016] In a preferred embodiment, a plurality of metal blocks are fixedly installed in the outer wall of the airbag-type hollow column. The metal blocks are embedded in the side wall of the airbag-type hollow column, and one end of the metal block extends to the outer surface of the airbag-type hollow column.

[0017] A method for using a power line stringing and tightening mechanism for power infrastructure projects includes the following steps:

[0018] Step 1: Install the small tractor in the designated location and anchor it using a fixed structure;

[0019] Step 2: Place the side frame and base frame in the designated position, fix and assemble them, and then place the cable reel on the side frame.

[0020] Step 3: After winding the traction cable onto the winding roller, connect it to the winding drum.

[0021] Step 4: Start the traction drive motor to drive the winding roller to rotate and pull the traction cable. At the same time, start the auxiliary drive motor to drive the resistance drive component to rotate and drive the cable reel to rotate and collect the traction cable.

[0022] Step 5: After the cable is fully erected on two adjacent overhead line towers / poles, reduce the traction speed of the small traction machine and begin to slowly tighten the cable.

[0023] Step 6: After tightening, secure the cable, stop tightening, dismantle the mechanism, and transfer it to the next work site.

[0024] The beneficial effects of this invention are as follows: This invention utilizes the contact and contact between the end plate and the resistance drive component, and drives the auxiliary drive shaft to rotate through the auxiliary drive machine, thereby causing the end plate to rotate, forming an auxiliary drive for the cable reel. This allows the cable reel to rotate automatically to wind up the cable without manual control. Since this embodiment uses the resistance drive component to drive the outer periphery of the end plate, the required torque of the resistance drive component is small, forming a labor-saving structure. Compared with directly driving the support shaft, less power is required during driving, and the auxiliary drive machine can be set at a lower position. During assembly, there is no need to lift the auxiliary drive machine, which is convenient for assembly and carrying. Moreover, the overall size of the mechanism is small, which can adapt to more confined spaces, which is beneficial for field operations. Furthermore, no direct contact operation by personnel is required during the process, making construction safer. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the combination of the cable take-up frame and the cable reel of the present invention.

[0027] Figure 3 This is a schematic diagram showing the cooperation state between the resistance drive component of the present invention and the end stop of the cable reel.

[0028] Figure 4 This is a top view of the cable being tightened in practice according to the present invention.

[0029] Figure 5 This is a schematic diagram of the present invention, showing the cable reel's weight concentrated on the rigid resistance drive component due to the offset tension caused by the reverse tension of the cable.

[0030] Figure 6 This is a schematic diagram of the improved resistance drive component of the present invention.

[0031] Figure 7 This is a diagram showing the fit between the airbag-type hollow column and the end baffle of the present invention.

[0032] Figure 8 This is a diagram showing the state of the invention after extrusion discs are installed at both ends of the air-bag-type hollow column.

[0033] Figure 9 This is a state diagram showing the state when the extrusion disc of the present invention restricts the end baffle.

[0034] Figure 10 For the present invention Figure 8 Enlarged view of the structure of part A.

[0035] Figure 11This is a schematic diagram of the structure of the present invention when a limiting nail is used as a contact limiting component.

[0036] Figure 12 This is a schematic diagram of the internal structure of the improved airbag-type hollow column of the present invention during use.

[0037] Figure 13 This is a flowchart illustrating the method of using the present invention.

[0038] The attached figures are labeled as follows: 1. Small traction machine; 11. Winding roller; 12. Traction drive machine; 2. Take-up frame; 21. Side frame; 22. Base frame; 23. Axle support frame; 24. Lifting device; 3. Cable reel; 31. Winding drum; 32. End stop plate; 33. Support shaft; 4. Power drive shaft; 41. Air hole; 42. Inflation nozzle; 5. Auxiliary drive machine; 6. Resistance drive component; 61. Airbag-type hollow column; 611. Fixing part; 612. Elastic connecting piece; 613. Metal block; 62. Extrusion plate; 621. Rubber pad; 622. Guide sleeve; 623. Guide pin; 624. Restriction pin; 625. Slider; 626. Radial groove; 627. Stud; 63. Threaded collar; 64. Adjusting plate. Detailed Implementation

[0039] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0040] Refer to the instruction manual appendix Figures 1 to 12 A power infrastructure construction line tensioning mechanism includes a small traction machine 1, a take-up frame 2, and a cable reel 3. The small traction machine 1 includes a winding roller 11 and a traction drive 12. The traction drive 12 is used to drive the winding roller 11 to rotate. The take-up frame 2 includes a side frame 21 and a base frame 22. Two sets of side frames 21 are provided and are respectively assembled and installed at both ends of the base frame 22. The cable reel 3 includes a winding drum 31. A support shaft 33 is provided in the winding drum 31. The winding drum 31 is rotatably mounted on the side frame 21 through the support shaft 33. End baffles 32 are fixedly connected to both ends of the winding drum 31.

[0041] During the traction and tightening process, the traction cable is wound around the winding roller 11 to form a tight winding and generate resistance. Then the traction cable is connected to the winding drum 31. The traction drive motor 12 drives the winding roller 11 to generate traction force on the cable. At the same time, the cable reel 3 is controlled to rotate to wind the traction cable until the cable passes around the winding roller 11 and is wound on the winding drum 31. Then the winding roller 11 is driven to rotate to tighten the cable.

[0042] A power-assisted drive shaft 4 is rotatably mounted on the base frame 22. The power-assisted drive shaft 4 is driven to rotate by an auxiliary drive motor 5. A resistance drive component 6 is fixedly installed at the end of the power-assisted drive shaft 4 at the position corresponding to the end plate 32. The resistance drive component 6 is a cylindrical structure. The circumference of the resistance drive component 6 is tangent to the circumference of the end plate 32, and the resistance drive component 6 and the end plate 32 are in close contact with each other, forming resistance between the resistance drive component 6 and the end plate 32.

[0043] It should be noted that the side frame 21 and the base frame 22 adopt a split design, which is beneficial for transportation. In actual use, the side frame 21 and the base frame 22 are combined and fixed, and then anchored in the corresponding positions. Similarly, before use, the small traction machine 1 is anchored in front of the take-up frame 2. After the side frame 21 and the base frame 22 are combined and fixed, the cable reel 3 is installed on the take-up frame 2, and the end plate 32 is brought into contact with the resistance drive 6 to form resistance. Then, the traction cable is first passed around the winding roller 11 and connected to the corresponding cable reel 3. The traction drive 12 drives the winding roller 11 to rotate to pull and tighten the traction cable. During the process, the auxiliary drive 5 drives the power drive shaft 4 to rotate, which in turn drives the resistance drive 6 to rotate. Since there is friction between the resistance drive 6 and the end plate 32, the end plate 32 can be rotated. The auxiliary drive for the cable reel 3 enables it to automatically rotate and wind up the cable without manual control. Since this embodiment uses a resistance drive 6 to drive the outer periphery of the end plate 32, the torque required for the resistance drive 6 is small, resulting in a labor-saving structure. Compared to directly driving the support shaft 33, less power is required during driving, and the auxiliary drive 5 can be positioned at a lower position, eliminating the need to lift it during assembly, making it easy to assemble and carry. Similarly, when the equipment is finished and the cable needs to be unloaded, the cable reel 3 can be driven to rotate in the opposite direction to assist in unloading, making the mechanism more convenient and labor-saving to use. Moreover, the overall size of the mechanism is small, making it easy to carry and assemble, adapting to more confined spaces, which is beneficial for field operations. Furthermore, no direct contact with personnel is required during operation, making construction safer.

[0044] Since it is an outdoor location, both the traction drive 12 and the auxiliary drive 5 can use small engine equipment, powered by fuel, or they can use an electric motor structure equipped with a small generator. As the diameter of the cable around the reel 3 increases during winding, it is necessary to adjust the rotation speed of the cable reel 3. At this time, the auxiliary drive 5 can use a speed-adjustable device, such as a speed-regulating motor, or design other easily adjustable gear sets. The speed control switch can be placed in a safe location, or the control switch can be led out by wire, so that the construction personnel can adaptively adjust the winding speed of the cable reel 3 according to the actual site conditions.

[0045] Further, please refer to the appendix to the instruction manual. Figure 3 The power drive shaft 4 and the resistance drive component 6 are both set in two groups. The two groups of resistance drive components 6 are symmetrically arranged with the vertical diameter plane of the support shaft 33 (which passes through the vertical diameter line of the support shaft 33) as the center of symmetry, thereby increasing the driving effect on the end plate 32 and ensuring the stability during driving. At the same time, a drag shaft frame 23 is slidably installed on the side frame 21. The support shaft 33 is rotatably installed with the drag shaft frame 23. A lifting device 24 is set at the bottom of the drag shaft frame 23. The lifting device 24 is fixedly installed on the side frame 21. The lifting device 24 can be a hydraulic jack or a screw structure for adjustment, so that the height of the support shaft 33 is adjustable. In combination with the setting of the two groups of resistance drive components 6, it can adapt to cable reels 3 of different diameters, thereby improving the adaptability of the mechanism.

[0046] In the above embodiments, to save costs, the resistance drive 6 can use a rigid cylindrical structure, such as a metal cylinder with a patterned surface. To fully utilize space for cable storage, the cable reel 3 needs to have a certain width to reduce the thickness of the wound cable. However, during the actual tightening process, to ensure the cable is evenly wound on the winding drum 31, the actual contact position between the cable and the winding drum 31 needs to be constantly changed, especially when the contact position is at the end of the winding drum 31 (see attached instruction manual). Figure 4 In this situation, because the cable reel 3 automatically rotates to wind up the cable, the cable also exerts a reverse pulling force on the cable reel 3. This causes the end of the cable reel 3 to easily shift towards the small traction machine 1 (to facilitate quick installation of the cable reel 3, the drag shaft bracket 23 only serves as a load-bearing element for the cable reel 3 and does not have high precision limitations, so the cable reel 3 can still move to some extent), thus forming the situation described in the attached manual. Figure 5 As shown, the end stop 32 will be concentrated against one of the resistance drive components 6 on this side. Due to the large weight of the cable reel 3 itself, concentrated stress is easily formed on the resistance drive component 6 at this position, which can accelerate the wear of the auxiliary drive shaft 4 at this position. At the same time, it can also easily cause driving errors to the end stop 32, affecting operation. Therefore, this embodiment improves the resistance drive component 6, as shown in the appendix to the instruction manual. Figure 6 and Figure 7As shown, the resistance drive component 6 is an airbag-type hollow cylinder 61. The center of the airbag-type hollow cylinder 61 is fixedly mounted on the power steering shaft 4. The airbag-type hollow cylinder 61 is filled with gas. When the end baffle 32 contacts the airbag-type hollow cylinder 61, it compresses the airbag-type hollow cylinder 61. In order to facilitate the deformation of the airbag-type hollow cylinder 61, rubber material is preferably used. In addition, during actual use, the end baffle 32 compresses the outer wall of the airbag-type hollow cylinder 61 to a certain extent, increasing the contact effect and improving the contact between the airbag-type hollow cylinder 61 and the end baffle. The friction between the discs 32 can improve the stability of the auxiliary drive of the end plate 32. Secondly, since the airbag hollow column 61 can generate adaptive deformation, when the cable reel 3 causes the above-mentioned offset phenomenon, the auxiliary drive shaft 4 itself will not be subjected to sudden stress, and the auxiliary drive shaft 4 will not be rigidly contacted with the end plate 32 and cause damage. Furthermore, even if the edge of the end plate 32 is damaged due to transportation, the airbag hollow column 61 can still form good contact with the end plate 32 and achieve drive, further improving the practicality of the mechanism.

[0047] Furthermore, the power steering shaft 4 is provided with an air hole 41, which is connected to the inner cavity of the airbag-type hollow column 61. An air inlet 42 is fixedly installed at the end of the power steering shaft 4, and the air hole 41 is connected to the air inlet 42. The air inlet 42 can be a check valve structure, such as a tire valve. When needed, it can be used with an inflation device (such as an air pump or air cylinder) to add gas to the airbag-type hollow column 61. This allows the airbag-type hollow column 61 to expand and increase its diameter to accommodate different sizes of end baffles 32. It also allows the contact tightness between the airbag-type hollow column 61 and the end baffles 32 to be increased as needed, thereby adjusting the resistance between them and improving the auxiliary drive effect on the cable reel 3.

[0048] Based on the above implementation method, when the resistance drive component 6 is selected as a flexible structure, the resistance between the resistance drive component 6 and the end baffle 32 increases, and the driving effect is enhanced. However, during normal driving, both the resistance drive component 6 and the end baffle 32 rotate, and they are not easy to slip relative to each other, nor will they generate axial force on the resistance drive component 6 (the airbag hollow column 61 is an elastic and hollow component, and its main elastic part is reflected on the circumferential side. In order to improve the effect of the power drive shaft 4 on the rotation drive of the airbag hollow column 61, the structure at both ends of the airbag hollow column 61 should be relatively strong and not easily deformed, so as to concentrate the driving force on the circumferential sidewall). However, in the actual tightening operation, due to mechanical vibration and the change in the contact position between the cable and the winding drum 31, the cable reel 3 is prone to axial lateral displacement, which in turn causes the end baffle 32 to generate axial friction with the airbag hollow column 61. Long-term use can easily affect the quality of the airbag hollow column 61 and reduce its service life. Therefore, this embodiment also provides the following technical solutions, which are detailed in the appendix of the specification. Figure 8 and Figure 9 Both ends of the airbag-type hollow column 61 are provided with extrusion discs 62, which are slidably mounted on the power drive shaft 4. A threaded collar 63 is provided on the side of the extrusion disc 62 away from the airbag-type hollow column 61. The threaded collar 63 is threaded onto the power drive shaft 4. A contact limiting component is provided on the side of the extrusion disc 62 corresponding to the end stop 32. In actual use, the extrusion disc 62 can be driven to move closer to the end stop 32 by rotating the threaded collar 63. The contact limiting component limits the end stop 32, preventing the end stop 32 from axially shifting and affecting the airbag-type hollow column 61.

[0049] Furthermore, the extrusion disc 62 is fixedly connected to the air-bag-type hollow column 61, and a guide sleeve 622 is provided in the middle of the extrusion disc 62, as shown in the attached instruction manual. Figure 10 The guide sleeve 622 is slidably mounted on the power drive shaft 4. A guide pin 623 is fixedly installed in the guide sleeve 622. The power drive shaft 4 is provided with guide grooves distributed along the axial direction of the power drive shaft 4. The guide pin 623 is slidably disposed in the guide grooves. Thus, the end of the airbag hollow column 61 is supported by the extrusion plate 62. The guide pin 623 limits the rotation of the power drive shaft 4, which drives the extrusion plate 62 to rotate synchronously. This increases the rotational driving effect on the airbag hollow column 61. At the same time, by controlling the two sets of extrusion plates 62 to move closer to each other, the airbag hollow column 61 can be compressed, thereby controlling the expansion of the airbag hollow column 61. While adjusting the extrusion plate 62 to restrict the end baffle 32, the contact tightness between the airbag hollow column 61 and the end baffle 32 can also be increased.

[0050] In the above-described implementation, the contact limiting component can be a simple solid structure, such as a rubber pad 621. While providing a limiting effect, it also protects the end stop plate 32. However, because the compression disc 62 and the end stop plate 32 rotate relative to each other, the rubber pad 621 easily rubs against the end stop plate 32 during rotation, especially when they are in close contact. Over time, this results in significant wear and tear. Therefore, this embodiment also provides another contact limiting component, as detailed in the appendix to the specification. Figure 11 and Figure 12 The contact limiting component consists of multiple sets of limiting pins 624. Multiple sets of radial grooves 626 are provided on the extrusion disc 62, distributed radially along the extrusion disc 62. A slider 625 is mounted on the outside of each limiting pin 624, slidably positioned within the radial groove 626. An elastic element is provided between the slider 625 and the radial groove 626 to hold the slider 625 in the middle position of the radial groove 626. For example, springs are provided on both sides of the slider 625. In actual use, the end of the limiting pin 624 gradually contacts the side wall of the end stop 32. Due to the limiting pin… The limiting pin 624 moves along an arc on the side wall of the end retainer 32. Therefore, the sliding of the slider 625 in the radial groove 626 can offset part of the displacement of the limiting pin 624 in the diameter direction of the end retainer 32. Thus, the limiting pin 624 forms an axial restriction on the end retainer 32. At the same time, the limiting pin 624, following the movement of the extrusion plate 62, can also provide a certain lateral driving force to the edge of the end retainer 32, that is, form a certain rotational driving force on the end retainer 32, thereby improving the rotational driving effect of the end retainer 32. Meanwhile, the limiting pin 624 has relatively less wear and a longer service life.

[0051] Further, please refer to the appendix to the instruction manual. Figure 11 An adjusting disc 64 is also provided on the outer side of the extrusion disc 62. The adjusting disc 64 is slidably engaged with the extrusion disc 62, and the adjusting disc 64 slides along the axial direction of the extrusion disc 62. A stud 627 is rotatably mounted on the extrusion disc 62. The stud 627 passes through the adjusting disc 64 and is threadedly engaged with the adjusting disc 64. A limiting pin 624 passes through the slider 625 and is slidably engaged with the slider 625. The end of the limiting pin 624 near the adjusting disc 64 is radially engaged with the adjusting disc 64. By rotating the adjusting disc 64, the relative position of the adjusting disc 64 and the extrusion disc 62 can be adjusted, and the elongation length of the limiting pin 624 can be adjusted to match the end baffles 32 of different thicknesses. Even if the limiting pin 624 is worn, it can be compensated by adjusting the elongation length of the limiting pin 624.

[0052] In the above embodiments, during actual tightening, a large rotational force is required for the cable reel 3 to ensure the cable is tightly wound on the winding drum 31. At this time, the tension on the cable between the cable reel 3 and the small traction machine 1 is relatively high. However, during actual operation, it is easily affected by unexpected events, causing the traction speed of the small traction machine 1 to be affected, or even causing the small traction machine 1 to stop traction. If the cable reel 3 rotates too fast, or continues to rotate when the small traction machine 1 stops traction, the cable portion between the cable reel 3 and the small traction machine 1 will bear a large tension, potentially causing the cable reel 3 to stop unexpectedly. Furthermore, if the air-cushioned hollow column 61 continues to rotate, it will cause significant wear, easily affecting the safety of the mechanism. Therefore, this embodiment also provides the following technical solutions, specifically referring to the appendix to the specification. Figure 8 and Figure 12 The airbag-type hollow column 61 also includes a fixing part 611, which is fixedly mounted on the power drive shaft 4. Multiple sets of elastic connecting pieces 612 are provided between the fixing part 611 and the airbag-type hollow column 61. The two ends of the elastic connecting pieces 612 are fixedly connected to the airbag-type hollow column 61 and the fixing part 611, respectively. The elastic connecting pieces 612 are inclined relative to the diameter line of the airbag-type hollow column 61, that is, the elastic connecting pieces 612 have a certain swing elasticity and a certain tensile strength. That is, in actual use, the airbag-type hollow column 61 can deform inward and bend the elastic connecting pieces 612. However, when the elastic connecting pieces 612 have a tensile force in the length direction of the flue gas, the elastic connecting pieces 612 are not easily deformed. For example, the elastic connecting pieces 612 are elastic metal sheets with plastic structures.

[0053] In actual use, if the cable reel 3 stops suddenly or decelerates abruptly, and if the power drive shaft 4 has not yet stopped rotating, but the airbag-type hollow column 61 stops momentarily due to its tight contact with the end baffle 32, the power drive shaft 4, while rotating with the fixed part 611, will cause the elastic connecting piece 612 to twist. That is, under the instantaneous tension generated by the relative rotation of the fixed part 611, the elastic connecting piece 612 will exert tension on the part of the airbag-type hollow column 61 connected to its other end, helping the airbag... The hollow column 61 is retracted (the end baffle 32 can rotate freely during normal operation, and the resistance between the airbag-type hollow column 61 and the end baffle 32 is relatively small, which is insufficient to cause the elastic connecting piece 612 to pull the airbag-type hollow column 61, so it will not slip during normal use), thereby creating a gap between the airbag-type hollow column 61 and the end baffle 32 and causing slippage, which will cause the corresponding drive equipment to malfunction. It also avoids the end baffle 32 and the airbag-type hollow column 61 from being forcibly rubbed together, resulting in scratches or other damage.

[0054] Furthermore, in order to reduce wear when the airbag-type hollow column 61 slips, multiple sets of metal blocks 613 are fixedly installed in the outer wall of the airbag-type hollow column 61. The metal blocks 613 are embedded in the side wall of the airbag-type hollow column 61, and one end of the metal block 613 extends to the outer surface of the airbag-type hollow column 61. Thus, when slipping, the metal blocks 613 can form a certain support. The metal blocks 613 mainly bear the movement wear between themselves and the end baffle 32, thereby improving the service life of the airbag-type hollow column 61.

[0055] Refer to the instruction manual appendix Figure 13 The present invention also provides a method for using the above-mentioned power infrastructure engineering line stringing and tightening mechanism, comprising the following steps:

[0056] Step 1: Install the small tractor 1 in the designated location and anchor it using a fixed structure;

[0057] Step 2: Place the side frame 21 and the base frame 22 in the designated position, fix and assemble them, and then place the cable reel 3 on the side frame 21.

[0058] Step 3: After the traction cable is wound around the winding roller 11, it is then connected to the winding drum 31.

[0059] Step 4: Start the traction drive motor 12 to drive the winding roller 11 to rotate and pull the traction cable. At the same time, start the auxiliary drive motor 5 to drive the resistance drive component 6 to rotate and drive the cable reel 3 to rotate and collect the traction cable.

[0060] Step 5: After the cable is fully erected on two adjacent overhead line towers / poles, reduce the traction speed of the small traction machine 1 and begin to slowly tighten the cable.

[0061] Step 6: After tightening, secure the cable, stop tightening, dismantle the mechanism, and transfer it to the next work site.

[0062] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A power line stringing and tightening mechanism for power infrastructure projects, characterized in that: The cable reel includes a small traction machine (1), a take-up frame (2), and a cable reel (3). The small traction machine (1) includes a winding roller (11) and a traction drive (12). The traction drive (12) is used to drive the winding roller (11) to rotate. The take-up frame (2) includes a side frame (21) and a base frame (22). The cable reel (3) includes a winding drum (31). The winding drum (31) is rotatably mounted on the side frame (21) via a support shaft (33). Both ends of the winding drum (31) are fixedly connected to end baffles (32). A power drive shaft (4) is rotatably mounted on the base frame (22). The power drive shaft (4) is driven to rotate by an auxiliary drive machine (5). A resistance drive component (6) is fixedly installed at the end of the power drive shaft (4) at the position corresponding to the end plate (32). The resistance drive component (6) is a cylindrical structure. The circumference of the resistance drive component (6) is tangent to the circumference of the end plate (32). The resistance drive component (6) and the end plate (32) are in close contact with each other. A resistance is formed between the resistance drive component (6) and the end plate (32). The resistance drive component (6) is an airbag-type hollow column (61). The center of the airbag-type hollow column (61) is fixedly installed on the power drive shaft (4). The airbag-type hollow column (61) is filled with gas. When the end baffle (32) contacts the airbag-type hollow column (61), it compresses the airbag-type hollow column (61). The power drive shaft (4) is provided with an air hole (41). The air hole (41) is connected to the inner cavity of the airbag-type hollow column (61). An air inlet (42) is fixedly installed at the end of the power drive shaft (4). The air hole (41) is connected to the air inlet (42).

2. The power line stringing and tightening mechanism for power infrastructure projects according to claim 1, characterized in that: The power drive shaft (4) and the resistance drive component (6) are both set in two groups. The two groups of resistance drive components (6) are symmetrically arranged with the vertical diameter plane of the support shaft (33) as the center of symmetry. The side frame (21) is slidably mounted with a drag shaft frame (23). The support shaft (33) and the drag shaft frame (23) are rotatably mounted. The bottom of the drag shaft frame (23) is provided with a lifting device (24). The lifting device (24) is fixedly mounted on the side frame (21).

3. The power line stringing and tightening mechanism for power infrastructure projects according to claim 2, characterized in that: Both ends of the airbag-type hollow column (61) are provided with extrusion discs (62). The extrusion discs (62) are slidably disposed on the power drive shaft (4). A threaded collar (63) is provided on the side of the extrusion disc (62) away from the airbag-type hollow column (61). The threaded collar (63) is threadedly fitted on the power drive shaft (4). A contact limiting component is provided on the side of the extrusion disc (62) corresponding to the end stop plate (32).

4. The power line stringing and tightening mechanism for power infrastructure projects according to claim 3, characterized in that: The extrusion disc (62) is fixedly connected to the airbag-type hollow column (61). A guide sleeve (622) is provided in the middle of the extrusion disc (62). The guide sleeve (622) is slidably fitted on the power drive shaft (4). A guide pin (623) is fixedly installed in the guide sleeve (622). A guide groove is provided on the power drive shaft (4) along the axial direction of the power drive shaft (4). The guide pin (623) is slidably disposed in the guide groove.

5. A power infrastructure construction line tensioning mechanism according to claim 4, characterized in that: The contact limiting component consists of multiple sets of limiting pins (624). The extrusion plate (62) is provided with multiple sets of radial grooves (626). The radial grooves (626) are distributed radially along the extrusion plate (62). A slider (625) is installed on the outside of the limiting pins (624). The slider (625) is slidably disposed in the radial groove (626). An elastic element is provided between the slider (625) and the radial groove (626). The elastic element is used to keep the slider (625) in the middle position of the radial groove (626).

6. A power line stringing and tightening mechanism for power infrastructure projects according to claim 5, characterized in that: An adjusting disc (64) is also provided on the outer side of the extrusion disc (62). The adjusting disc (64) is slidably engaged with the extrusion disc (62), and the adjusting disc (64) slides along the axial direction of the extrusion disc (62). A stud (627) is rotatably mounted on the extrusion disc (62). The stud (627) passes through the adjusting disc (64) and is threadedly engaged with the adjusting disc (64). A limiting pin (624) passes through the slider (625) and is slidably engaged with the slider (625). The end of the limiting pin (624) near the adjusting disc (64) is radially engaged with the adjusting disc (64).

7. A power infrastructure construction line tensioning mechanism according to claim 6, characterized in that: The airbag-type hollow column (61) also includes a fixing part (611), which is fixedly mounted on the power drive shaft (4). Multiple sets of elastic connecting pieces (612) are provided between the fixing part (611) and the airbag-type hollow column (61). The two ends of the elastic connecting piece (612) are fixedly connected to the airbag-type hollow column (61) and the fixing part (611) respectively. The elastic connecting piece (612) is inclined relative to the diameter line of the airbag-type hollow column (61). The elastic connecting piece (612) is an elastic metal sheet structure.

8. A power infrastructure construction line tensioning mechanism according to any one of claims 1-7, characterized in that: Multiple sets of metal blocks (613) are fixedly installed in the outer wall of the airbag hollow column (61). The metal blocks (613) are embedded in the side wall of the airbag hollow column (61), and one end of the metal block (613) extends to the outer surface of the airbag hollow column (61).

9. A method of using the power infrastructure construction line tensioning mechanism according to claim 1, characterized in that, Includes the following steps: Step 1: Install the small tractor (1) in the designated location and anchor it using a fixed structure; Step 2: Place the side frame (21) and the base frame (22) in the designated position, fix and assemble them, and then place the cable reel (3) on the side frame (21); Step 3: After the traction cable is wound on the winding roller (11), it is then connected to the winding drum (31). Step 4: Start the traction drive (12) to drive the winding roller (11) to rotate and pull the traction cable, and simultaneously start the auxiliary drive (5) to drive the resistance drive component (6) to rotate and drive the cable reel (3) to rotate and collect the traction cable. Step 5: After the cable is fully erected on two adjacent overhead line towers / poles, reduce the traction speed of the small traction machine (1) and begin to slowly tighten the cable. Step 6: After tightening, secure the cable, stop tightening, dismantle the mechanism, and transfer it to the next work site.

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