Cable lifting device for power transmission line construction

Abstract

The invention relates to the field of cable lifting devices, and discloses a cable lifting device for power transmission line construction, which comprises a support plate detachably mounted on a power transmission line iron tower bracket; the mounting shell is fixed on the supporting plate, and an opening is formed between the mounting shell and the middle of the supporting plate; the lifting chain penetrates through the opening; the lifting chain wheel is rotationally arranged in the middle of the mounting shell and is meshed with the lifting chain; the handle is used for driving the hoisting chain wheel to rotate in a multi-stage manner; the pressing plate is located at the bottom of the power transmission line iron tower support. According to the cable lifting device for power transmission line construction, through a multi-stage gear transmission structure composed of the rotating rod, the transmission rod, the transmission gear and the power gear, the transmission ratio can be accurately adjusted, small-amplitude fine adjustment of the cable is achieved, and the requirements for adjustment and accurate butt joint in construction are met; by means of the combined clamping structure of the supporting plate, the pressing plate, the bolt and the nut and the effect of the spacer bush, the device is suitable for power transmission line iron tower supports of different specifications and adapts to various construction scenes.

Description

Technical Field

[0001] This invention relates to the field of cable lifting device technology, and more specifically, to a cable lifting device for power transmission line construction. Background Technology

[0002] In the installation of overhead ground wire suspension strings for power transmission lines, traditional hand-operated hoists cannot be used between the suspension points and cables because of their large size and the fact that the minimum distance between the two hooks is greater than the distance between the suspension string hardware hanging points and the cable. It is necessary to find a fixed point on the tower, which affects the use. Summary of the Invention

[0003] This invention provides a cable lifting device for power transmission line construction, solving the technical problem of difficulty in achieving distance adjustment and control in related technologies for cable lifting devices used in power transmission line construction.

[0004] This invention provides a cable lifting device for power transmission line construction, comprising: Support plate, used for detachable installation on transmission line tower supports; The mounting shell is fixed to the support plate, and an opening is formed between the mounting shell and the support plate in the middle. Lifting chain, through the opening; The lifting sprocket is rotatably mounted in the middle of the mounting housing and meshes with the lifting chain; Handle, used for multi-stage drive of the crane sprocket rotation; The clamping plate is located at the bottom of the transmission line tower support and is connected to the support plate by fasteners to press the support plate onto the transmission line tower support.

[0005] The support plate is detachably installed on the transmission line tower support, providing stable support for the overall structure. The mounting shell is fixed to the support plate, and the opening formed in the middle of the two provides a through channel for the lifting chain, ensuring smooth lifting and lowering of the lifting chain. The lifting sprocket is rotatably installed in the middle of the mounting shell and meshes with the lifting chain to achieve power transmission through meshing. The handle is used to drive the lifting sprocket in multiple stages, providing power input for the lifting action. The clamping plate is located at the bottom of the transmission line tower support and is connected to the support plate by fasteners. When the fasteners are tightened, they will drive the clamping plate to move closer to the support plate, clamping the transmission line tower support from the top and bottom sides to achieve a firm fixation of the device.

[0006] The detachable installation design allows the device to adapt to different construction scenarios, facilitating disassembly, assembly, and transportation; the meshing transmission between the lifting sprocket and the lifting chain is stable and reliable, preventing slippage during lifting; the upper and lower clamping fixing method greatly improves the stability of the device, resists the tension during cable lifting, prevents device displacement, and ensures construction safety.

[0007] As a further optimization of the present invention, the fastener includes a bolt and a nut, wherein the bolt passes through the pressure plate and the support plate in sequence and is locked by the nut.

[0008] As a further optimization of the present invention, a spacer is provided around the outer periphery of the bolt, and the spacer is located between the support plate and the clamping plate.

[0009] As a further optimization of the present invention, it also includes a rotating rod and a transmission rod. The rotating rod is rotatably connected to the middle of the mounting housing and passes through the lifting sprocket. The transmission rod is rotatably disposed inside the mounting housing and is used to transmit the rotational power of the rotating rod to the lifting sprocket.

[0010] As a further optimization of the present invention, the ends of the rotating rod and the transmission rod away from the handle are respectively fitted with mutually meshing transmission gears.

[0011] The ends of the rotating rod and the transmission rod furthest from the handle are respectively fitted with transmission gears, and the two transmission gears mesh with each other to form a gear transmission pair. When the handle drives the rotating rod to rotate, the transmission gear on the rotating rod rotates synchronously. Through gear meshing, the torque is transmitted to the transmission gear on the transmission rod, which drives the transmission rod to rotate, and then the power is transmitted to the lifting sprocket.

[0012] The gear transmission ratio is precise, ensuring stable and reliable power transmission and reducing power loss; the direction and speed of power transmission can be changed through gear meshing, providing a suitable rotation speed for the lifting sprocket and facilitating control of the cable lifting rhythm.

[0013] As a further optimization of the present invention, the rotating rod and the transmission rod are respectively fitted with meshing power gears.

[0014] As a further optimization of the present invention, the handle is connected to the rotating rod via a drive shaft. A ratchet is provided on the outer periphery of the drive shaft and is located inside the mounting housing to achieve unidirectional drive.

[0015] The drive shaft serves as a connecting component, fixing the handle and the rotating rod together. When the operator rotates the handle, the circular motion of the handle is converted into the rotation of the rotating rod through the drive shaft, thus transmitting power. The ratchet is located on the outer periphery of the drive shaft and inside the mounting housing, cooperating with the internal structure of the mounting housing to achieve one-way locking. When the handle rotates in the forward direction, the ratchet is not locked, and power is transmitted smoothly. When the handle rotates in the reverse direction or stops rotating, the ratchet locks to prevent the rotating rod from rotating in the reverse direction.

[0016] The ratchet's one-way locking function effectively prevents the risk of the cable falling due to the reverse rotation of the device after it is lifted, ensuring construction safety; the drive shaft makes the connection between the handle and the rotating rod more stable, the power transmission more direct, and the power loss reduced, while the handle's operating angle is more flexible and adaptable to different construction positions.

[0017] As a further optimization of the present invention, one end of the lifting chain is connected to a hook for suspending cables.

[0018] As a further optimization of the present invention, a protective cover is provided on the outer surface of the handle.

[0019] As a further optimization of the present invention, the support plate, mounting shell and clamping plate are all made of high-strength steel.

[0020] The beneficial effects of this invention are as follows: 1. The cable lifting device for power transmission line construction described in this invention uses a multi-stage gear transmission structure composed of a rotating rod, a transmission rod, a transmission gear, and a power gear. This structure allows for precise adjustment of the transmission ratio. Combined with the operation of the handle, it enables small-amplitude lifting and lowering of the cable for fine-tuning. This effectively overcomes the shortcomings of existing hand-operated hoists, which cannot be further adjusted after being pulled to the limit of their stroke. This device meets the requirements for precise docking and installation points in the construction of ultra-high voltage power transmission lines.

[0021] 2. The cable lifting device for power transmission line construction described in this invention uses a combination of a support plate, a pressure plate, and bolts and nuts for clamping. Combined with the limiting and pressure dispersing effect of the spacer, the device can be firmly fixed to the support of power transmission line towers of different specifications. During the fixing process, the clamping force can be precisely adjusted through thread transmission, which not only prevents the device from loosening and falling off, but also prevents excessive clamping from damaging the support. It is suitable for various construction scenarios.

[0022] 3. The cable lifting device for power transmission line construction described in this invention has the following advantages: First, the multi-stage gear transmission structure can amplify the torque, and with the lever effect of the handle, it can significantly reduce the operating force required to lift the cable, making it easier for operators. Second, the ratchet on the outer periphery of the drive shaft can achieve a one-way locking function, which can effectively prevent the risk of the cable falling due to the reverse rotation of the device after it is lifted. At the same time, the protective cover of the handle improves the grip comfort and anti-slip properties, further ensuring operational safety. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a cable lifting device for power transmission line construction proposed in this invention.

[0024] Figure 2 This is a side view of a cable lifting device for power transmission line construction proposed in this invention.

[0025] Figure 3 This is a cross-sectional structural schematic diagram of a cable lifting device for power transmission line construction proposed in this invention.

[0026] Figure 4 for Figure 3 A partial structural diagram.

[0027] Figure 5 This is a bottom view schematic diagram of a cable lifting device for power transmission line construction proposed in this invention.

[0028] In the picture: 1. Support plate; 2. Transmission line tower bracket; 3. Mounting shell; 4. Lifting chain; 5. Lifting sprocket; 6. Handle; 7. Pressure plate; 8. Bolt; 9. Nut; 10. Rotating rod; 11. Transmission rod; 12. Transmission gear; 13. Power gear; 14. Drive shaft; 15. Ratchet; 16. Spacer; 17. Hook. Detailed Implementation

[0029] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0030] Example 1 like Figures 1 to 5 As shown in the figure, an embodiment of the present invention provides a cable lifting device for power transmission line construction, which includes a support plate 1, and the support plate 1 is detachably installed on the power transmission line tower support 2. Mounting housing 3 is installed on support plate 1; An opening is formed in the middle of the mounting shell 3 and the support plate 1 to allow the lifting chain 4 to pass through; A lifting sprocket 5 that drives the lifting chain 4 is rotatably mounted in the middle of the mounting housing 3; It also includes a handle 6 that drives the lifting sprocket 5, and the handle 6 is covered with a protective cover.

[0031] First, the support plate 1 is installed on the transmission line tower support 2 to achieve a fixed connection between the device and the working carrier, providing a stable support foundation for subsequent cable lifting. The mounting shell 3 is fixed on the support plate 1, and the opening formed between the shell and the support plate 1 provides a through channel for the lifting chain 4, ensuring that the lifting chain 4 can smoothly suspend and lift the cable. The lifting sprocket 5 is rotatably set in the middle of the mounting shell 3 and meshes with the lifting chain 4. When the lifting sprocket 5 is driven to rotate by the handle 6, the teeth of the lifting sprocket 5 will drive the lifting chain 4 to move up and down, thereby realizing the lifting operation of the cable.

[0032] The support plate 1 is connected to the clamping plate 7 located at the bottom of the transmission line tower support 2 by fasteners, so that it is locked and pressed against the transmission line tower support 2 by the fasteners.

[0033] The clamping plate 7 is located at the bottom of the transmission line tower support 2 and is connected to the support plate 1 through fasteners. When the fasteners are tightened, they generate axial locking force, which drives the clamping plate 7 to move upward. Together with the support plate 1, it forms a clamping force from the upper and lower sides of the transmission line tower support 2, firmly pressing the support plate 1 onto the transmission line tower support 2. This prevents displacement during cable lifting. The upper and lower clamping fixing method greatly improves the stability and firmness of the connection between the device and the transmission line tower support 2, resists the tension generated during cable lifting, prevents the device from loosening and falling off, and ensures construction safety. At the same time, the tightening degree of the fasteners can be adjusted to adapt to parts of the transmission line tower support 2 with different thicknesses, making it more adaptable.

[0034] Specifically, the fasteners include bolt 8 and nut 9. Bolt 8 passes through clamping plate 7 and support plate 1 and is locked by nut 9.

[0035] Bolt 8 is passed through clamping plate 7 and support plate 1 in sequence, so that the threaded part of bolt 8 runs through the entire clamping structure. Then, nut 9 is screwed onto the threaded end of bolt 8. Through the thread engagement between nut 9 and bolt 8, when nut 9 is continuously tightened, nut 9 will apply axial pressure towards support plate 1, thereby driving clamping plate 7 to fit and press against transmission line tower support 2, and finally achieving reliable clamping and fixing of transmission line tower support 2 by support plate 1 and clamping plate 7.

[0036] The mounting housing 3 is rotatably connected to a rotating rod 10 that is driven in one direction by a handle 6. The rotating rod 10 rotates through the lifting sprocket 5. Inside the mounting housing 3, there is a transmission rod 11 that transmits power from the rotating rod 10 to the lifting sprocket 5.

[0037] The rotating rod 10 is rotatably connected to the middle of the mounting shell 3 and rotates through the lifting sprocket 5. The handle 6 can drive the rotating rod 10 to rotate in one direction, providing power input for transmission. The transmission rod 11 is rotatably set inside the mounting shell 3. Its core function is to transmit the power transmitted by the rotating rod 10 to the lifting sprocket 5. When the rotating rod 10 rotates under the drive of the handle 6, it drives the transmission rod 11 to rotate synchronously through the power transmission cooperation, and then the transmission rod 11 drives the lifting sprocket 5 to rotate, ultimately realizing the lifting and lowering of the lifting chain 4.

[0038] The unidirectional drive lever 10 can prevent the cable from falling due to reverse rotation after being lifted, ensuring operational safety. Through the two-stage transmission of the lever 10 and the transmission rod 11, power can be reasonably distributed, reducing the operating force of the handle 6 and making it easier for operators. The transmission structure is built into the mounting shell 3, which has good protection and can reduce the impact of dust and debris on the transmission effect, extending the service life of the device.

[0039] The transmission rod 11 and the rotating rod 10 are fitted with transmission gears 12 that drive each other at the ends away from the handle 6.

[0040] Two transmission gears 12 mesh with each other to form a gear transmission pair. When the handle 6 drives the rotating rod 10 to rotate, the transmission gear 12 on the rotating rod 10 will rotate synchronously. Through the meshing action between the gears, the torque is transmitted to the transmission gear 12 on the transmission rod 11, which in turn drives the transmission rod 11 to rotate, realizing the transmission of power from the rotating rod 10 to the transmission rod 11. The meshing transmission gears 12 can realize the change of power direction and speed adjustment, providing a guarantee for the reasonable speed of the subsequent lifting sprocket 5, making the cable lifting speed easier to control.

[0041] The end of the transmission rod 11 away from the transmission gear 12 and the rotating rod 10 are fitted with power gears 13 that drive each other.

[0042] Two drive gears 13 mesh with each other, forming a multi-stage gear transmission structure with the previous transmission gear 12. When the rotating rod 10 rotates, the power is first transmitted to the transmission rod 11 through the transmission gear 12. At the same time, the drive gear 13 on the rotating rod 10 and the drive gear 13 on the transmission rod 11 cooperate to further enhance the power transmission effect, so that the transmission rod 11 obtains a more stable torque, thereby driving the lifting sprocket 5 to rotate smoothly. The multi-stage gear transmission can further amplify the torque and reduce the force required by the operating handle 6, making it easier for the operator. The double gear meshing structure improves the stability and reliability of the transmission, reduces vibration and impact during the transmission process, and avoids cable swaying due to unstable power transmission. At the same time, the transmission ratio can be adjusted by matching the number of gear teeth to achieve fine-tuning of the cable lifting.

[0043] The handle 6 is connected to the rotating rod 10 via the drive shaft 14, and the outer periphery of the drive shaft 14 is provided with a ratchet 15 located inside the mounting housing 3.

[0044] The drive shaft 14 serves as an intermediate carrier for power transmission. When the operator rotates the handle 6, the circular motion of the handle 6 is converted into the rotation of the lever 10 through the drive shaft 14. The ratchet 15 is located on the outer periphery of the drive shaft 14 and inside the mounting housing 3. The ratchet 15 has a one-way locking function. When the handle 6 rotates forward to drive the lever 10, the ratchet 15 does not lock, and the power is transmitted smoothly. When the handle 6 rotates in the opposite direction or stops rotating, the ratchet 15 locks with the mating structure inside the mounting housing 3 to prevent the lever 10 from rotating in the opposite direction.

[0045] The one-way locking function of the ratchet 15 effectively avoids the risk of falling due to the reverse rotation of the device after the cable is lifted, ensuring construction safety and cable safety; the setting of the drive shaft 14 makes the connection between the handle 6 and the rotating rod 10 more stable, the power transmission more direct, and the power loss reduced. At the same time, the operating angle of the handle 6 is more flexible, making it convenient for operators to operate in different construction positions.

[0046] One end of the lifting chain 4 is connected to a hook 17.

[0047] Hook 17 is connected to one end of the lifting chain 4 and serves as a suspension component for the cable. During operation, hook 17 is directly attached to the cable to be lifted. The cable is firmly locked by the opening and closing structure of hook 17 to prevent the cable from falling off. When the lifting chain 4 moves up and down under the drive of the lifting sprocket 5, the lifting chain 4 drives hook 17 to move up and down synchronously, thereby realizing the lifting or lowering of the cable suspended on hook 17.

[0048] Example 2 Based on Embodiment 1, a spacer 16 is provided around the outer periphery of the bolt 8, and the spacer 16 is located between the support plate 1 and the clamping plate 7. When using different transmission line tower supports 2, spacers 16 of different lengths can be replaced to adapt to the use.

[0049] The spacer 16 is fitted around the outer periphery of the bolt 8 and is located between the support plate 1 and the clamping plate 7. The length of the spacer 16 is fixed. When it is locked by the bolt 8 and the nut 9, the spacer 16 can prevent the support plate 1 and the clamping plate 7 from getting too close and squeezing the transmission line tower support 2. At the same time, the spacer 16 can disperse the pressure applied by the bolt 8, so that the pressure is evenly distributed on the support plate 1 and the clamping plate 7.

[0050] The spacer 16 prevents the transmission line tower support 2 from deforming or being damaged due to excessive clamping force, thus protecting the structural integrity of the transmission line tower support 2. At the same time, it evenly distributes the pressure, preventing the support plate 1 and the clamping plate 7 from being damaged due to excessive local pressure, extending the service life of the device, and ensuring the stable transmission of clamping force, thus ensuring that the device is firmly fixed.

[0051] The embodiments of the present invention have been described above, but the embodiments are not limited to the specific implementation methods described above. The specific implementation methods described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the embodiments described above, all of which are within the protection scope of the embodiments described above.

Claims

1. A cable lifting device for power transmission line construction, characterized in that, include: Support plate, used for detachable installation on transmission line tower supports; The mounting shell is fixed to the support plate, and an opening is formed between the mounting shell and the support plate in the middle. Lifting chain, through the opening; The lifting sprocket is rotatably mounted in the middle of the mounting housing and meshes with the lifting chain; Handle, used for multi-stage drive of the crane sprocket rotation; The clamping plate is located at the bottom of the transmission line tower support and is connected to the support plate by fasteners to press the support plate onto the transmission line tower support.

2. The cable lifting device for power transmission line construction according to claim 1, characterized in that: The fasteners include bolts and nuts, with the bolts passing through the clamping plate and the support plate in sequence and being locked in place by the nuts.

3. The cable lifting device for power transmission line construction according to claim 2, characterized in that: The bolt is fitted with a spacer, which is located between the support plate and the clamping plate.

4. A cable lifting device for power transmission line construction according to claim 1, characterized in that: It also includes a rotating rod and a transmission rod. The rotating rod is rotatably connected to the middle of the mounting housing and passes through the lifting sprocket. The transmission rod is rotatably located inside the mounting housing and is used to transmit the rotational power of the rotating rod to the lifting sprocket.

5. A cable lifting device for power transmission line construction according to claim 4, characterized in that: The ends of the rotating rod and the transmission rod furthest from the handle are respectively fitted with meshing transmission gears.

6. A cable lifting device for power transmission line construction according to claim 5, characterized in that: The rotating rod and the transmission rod are also fitted with meshing power gears.

7. A cable lifting device for power transmission line construction according to claim 4, characterized in that: The handle is connected to the rotating rod via a drive shaft. A ratchet is provided on the outer periphery of the drive shaft and is located inside the mounting housing to achieve unidirectional drive.

8. A cable lifting device for power transmission line construction according to claim 1, characterized in that: One end of the lifting chain is connected to a hook for suspending cables.

9. A cable lifting device for power transmission line construction according to claim 1, characterized in that: The outer surface of the handle is covered with a protective cover.

10. A cable lifting device for power transmission line construction according to claim 9, characterized in that: The support plate, mounting shell, and clamping plate are all made of high-strength steel.

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