A tensioning device for traction ropes in power construction

Abstract

This invention discloses a traction rope tensioning device for power construction, comprising two side plates connected by several support shafts, and two sheaves with several grooves on each sheave. The sheaves are connected to the side plates via sheave shafts. A sheave gear, rotating synchronously with the shaft, is located at the end of the shaft on one side plate. The sheave shaft, sheaves, and sheave gears are circumferentially limited. A drive gear set is located between the two sheave gears, allowing them to rotate synchronously. The drive gear set is driven by a main shaft, with a drive assembly at the end of the main shaft away from the drive gear set. Connecting plates with connecting holes are also connected to the side plates. This invention provides convenient and quick traction rope winding, and the rope is less prone to strain or damage during tightening.

Description

Technical Field

[0001] This invention relates to the field of electric power, and more particularly to a tensioning device for traction ropes used in electric power construction. Background Technology

[0002] During the installation of power cables, if the cable is pulled directly by a hook when tightening, the cable can easily be damaged, affecting its service life.

[0003] The patent number “202120771144.2” discloses “a tensioning device for power engineering construction”, but the tensioning of the traction rope in the device still requires manual tightening, which is very difficult. Summary of the Invention

[0004] The purpose of this invention is to provide a tensioning device for traction ropes in power construction.

[0005] The innovation of this invention lies in the fact that the traction rope is easy and quick to reel in, and the line is not easily pulled or damaged when tightened.

[0006] To achieve the above-mentioned objectives, the technical solution of this invention is: a traction rope tensioning device for power construction, comprising two side plates connected by several support shafts, and two sheaves provided between the two side plates. Each sheave has several wire grooves, and both sheaves are connected to the two side plates via sheave shafts. At the ends of the sheave shafts on one side plate, sheave gears are provided that rotate synchronously with the sheave shafts. The sheave shafts, sheaves, and sheave gears are circumferentially limited. A drive gear set is provided between the two sheave gears, and the two sheave gears rotate synchronously via the drive gear set. The drive gear set is driven to rotate by a main shaft, and a drive assembly is provided at the end of the main shaft away from the drive gear set. Connecting plates are also connected to the two side plates, and connecting holes are provided on the connecting plates.

[0007] Furthermore, the connecting plate is connected to the two side plates via a connecting plate pivot.

[0008] The aforementioned traction rope tensioning device for power construction is characterized in that the drive gear set includes a pinion, two sets of auxiliary gear sets located on both sides of the pinion, and a transition gear arranged coaxially with the pinion. The pinion is circumferentially limited by the main rotating shaft, and the transition gear can rotate relative to the main rotating shaft. The auxiliary gear set includes a first gear meshing with the pinion and a second gear meshing with the transition gear. An auxiliary rotating shaft for rotating the auxiliary gear set is provided on the side plate. The first gear and the second gear rotate coaxially and are circumferentially limited by the auxiliary rotating shaft. The transition gear meshes with the line wheel gear.

[0009] Furthermore, the drive assembly includes a rotating wheel fixed on the main rotating shaft. The rotating wheel has several evenly distributed notches. A rotating handle is provided at the rotating wheel. A toggle block is provided inside the rotating handle. A toggle shaft for rotating the toggle block is provided on the rotating handle. A toggle element for rotating the toggle shaft is provided outside the rotating handle. The toggle block includes two hooks arranged facing each other. A limiting rod is also provided on the rotating handle. A U-shaped element for engaging the limiting rod is provided at the limiting rod. One end of the limiting rod has a limiting piece, and the other end has a limiting spring. The limiting spring extends beyond the limiting rod and is engaged within the U-shaped element. The toggle block has three limiting zones for engaging the limiting piece. These three zones include a neutral limiting zone and two toggle limiting zones. When the limiting piece is located in the two toggle limiting zones, the two hooks are engaged in the notches, with one side of the hook being straight and the other side being inclined. When the limiting piece is located in the neutral limiting zone, both hooks disengage from the notches.

[0010] Furthermore, both the two toggle limiting areas and the limiting piece are of inferior arc shape.

[0011] Furthermore, the main shaft has a reduced-diameter section at the end of the protruding side plate of the drive assembly. This reduced-diameter section has external threads, and an inner chuck is screwed onto these threads. The outer circumference of the inner chuck, away from the side plate, has an external concave ring. An inner friction plate, a ratchet, and an outer friction plate are sequentially fitted into this concave ring. Two sets of pawls are located on the outer periphery of the inner chuck. The pawls and the side plate are connected via a pawl shaft, on which a torsion spring is fitted. The two legs of the torsion spring are fixed to the side plate and the pawls, respectively. An outer chuck is also fitted outside the outer friction plate. An inner spring is fitted onto the reduced-diameter section, located between the outer chuck and the outer friction plate. The outer chuck and the rotating wheel are circumferentially limited, and the rotating wheel is screwed onto the reduced-diameter section. This effectively incorporates a brake structure at the drive assembly, preventing the main shaft from reversing when the handle is rotated in reverse.

[0012] Furthermore, the rotating wheel has several protrusions on one side of the outer chuck, and the inner side of the outer chuck has several inner protrusions located between adjacent protrusions. The outer side of each protrusion has several recesses. The outer chuck and the rotating wheel are locked into all the recesses of the protrusions by snap rings. This locking mechanism between the rotating wheel and the outer chuck facilitates installation and disassembly.

[0013] Furthermore, the auxiliary shaft is an extension of the second gear, which makes manufacturing more convenient.

[0014] Furthermore, a limiting nut is screwed onto the end of the main rotating shaft located on the rotating handle. The limiting nut has a limiting groove, and the main rotating shaft has an insertion hole. A limiting component is inserted into the insertion hole and engages with the limiting groove. This limits the position of the rotating wheel, preventing it from rotating too far.

[0015] Furthermore, a rotating handle is connected to the rotating wheel by screws. This allows for manual rotation by a person under certain circumstances.

[0016] The beneficial effects of this invention are:

[0017] 1. The traction rope in this invention is easy and quick to reel in, and the line is not easily pulled or damaged when tightened.

[0018] 2. In this invention, the presence of a ratchet and a pawl is equivalent to setting a brake structure on the drive assembly. When the rotating handle reverses, the pawl locks the ratchet, thereby locking the main shaft and the spool, preventing the spool from reversing. This makes rotating the handle convenient and quick, eliminating the need for circular rotation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure at the spool gear.

[0021] Figure 3 This is a schematic diagram of the structure at the drive component.

[0022] Figure 4 This is a schematic diagram of the ratchet mechanism.

[0023] Figure 5 This is an exploded view of the present invention.

[0024] Figure 6 This is a schematic diagram of the structure at the toggle block.

[0025] Figure 7 This is a schematic diagram of the external chuck.

[0026] Figure 8 This is a schematic diagram of the structure at the rotating wheel.

[0027] Figure 9 This is a schematic diagram of the structure at the limit nut. Detailed Implementation

[0028] The technical solutions in the embodiments of the present invention will now be clearly and completely described in conjunction with the accompanying drawings.

[0029] Example 1: As Figure 1 , 2As shown in Figures 3, 4, 5, 6, 7, 8, and 9, a traction rope tensioning device for power construction includes two side plates 1 connected by several support shafts 2. Two sheaves 3 are also provided between the two side plates 1, each sheave 3 having several wire grooves 3.1. Both sheaves 3 are connected to the two side plates 1 via sheave shafts 3.2. At the end of the sheave shafts on one side plate 1, sheave gears 4 are provided that rotate synchronously with the sheave shafts 3.2. The sheave shafts 3.2, sheaves 3, and sheave gears 4 are circumferentially limited. A drive gear set 5 is provided between the two sheave gears 4, allowing the two sheave gears 4 to rotate synchronously via the drive gear set 5. The drive gear set 5 is driven to rotate via a main shaft 6. A drive assembly 7 is provided at the end of the main shaft 6 away from the drive gear set 5. Connecting plates 8 are also connected to the two side plates 1 via connecting plate shafts 9. Connecting plates 8 have connecting holes 8.1.

[0030] The drive gear set 5 includes a pinion 5.1, two sets of auxiliary gear sets 5.2 located on both sides of the pinion 5.1, and a transition gear 5.3 arranged coaxially with the pinion 5.1. The pinion 5.1 and the main rotating shaft 6 are circumferentially limited. The transition gear 5.2 can rotate relative to the main rotating shaft 6. The auxiliary gear set 5.2 includes a first gear 5.21 that meshes with the pinion 5.1 and a second gear 5.22 that meshes with the transition gear 5.3. An auxiliary rotating shaft for the rotation of the auxiliary gear set 5.2 is provided on the side plate 1. The first gear 5.21 and the second gear 5.22 rotate coaxially and are circumferentially limited with the auxiliary rotating shaft. The auxiliary rotating shaft is an extension of the second gear 5.22. The transition gear 5.3 meshes with the spool gear 4.

[0031] The drive assembly 7 includes a rotating wheel 7.1 fixed to the main rotating shaft 6, and a rotating handle 10 connected to the rotating wheel 7.1 by screws. The rotating wheel 7.1 has several evenly distributed notches 7.11. A rotating handle 7.2 is located on the rotating wheel 7.1. A toggle block 7.21 is located inside the rotating handle 7.2. A pivot shaft 7.22 for rotating the toggle block 7.21 is located on the rotating handle 7.2. A paddle 7.23 for rotating the pivot shaft 7.22 is located outside the rotating handle 7.2. The toggle block 7.21 includes two hooks 7.211 facing each other. A limiting rod 7.24 is also located on the rotating handle 7.24. A U-shaped piece 7.25 is located at the limiting rod 7.24 for card holder positioning. One end of the limiting rod 7.24 has a limiting piece 7.25, and the other end is fitted with a limiting spring 7.26. The length of the limiting spring 7.26 extends beyond the limiting rod 7.24 and is engaged within the U-shaped part 7.25. The actuating block 7.21 has three limiting areas for engaging the limiting piece 7.25. The three limiting areas include the neutral limiting area 7.2121 and two actuating limiting areas 7.2122. Both the two actuating limiting areas 7.2122 and the limiting piece 7.25 are of inferior arc shape. When the limiting piece 7.25 is located in the two actuating limiting areas 7.2122, the two hooks 7.211 are engaged in the recess 7.11 respectively. One side of the hook 7.211 is straight, and the other side is inclined. When the limiting piece 7.25 is located in the neutral limiting area 7.2121, both hooks 7.211 are disengaged from the recess 7.11.

[0032] The main shaft 6 has a reduced diameter section 6.1 at the end of the protruding side plate of the drive assembly. The reduced diameter section 6.1 has an external thread, and an inner chuck 6.2 is screwed onto the external thread. The outer circumference of the inner chuck 6.2 away from the side plate 1 has an external recess 6.21. An inner friction plate 6.3, a ratchet 6.4, and an outer friction plate 6.5 are sequentially fitted onto the external recess 6.21. Two sets of pawls 6.6 are provided on the outer periphery of the inner chuck 6.2. The pawls 6.6 and the side plate 1... The connection is made via a pawl shaft 6.7, on which a torsion spring 6.8 is fitted. The two legs of the torsion spring 6.8 are fixed to the side plate 1 and the pawl 6.6, respectively. An outer chuck 6.9 is also fitted on the outer side of the outer friction plate 6.5. An inner spring 6.10 is fitted on the reduced diameter section. The inner spring 6.10 is located between the outer chuck 6.9 and the outer friction plate 6.5. The outer chuck 6.9 and the rotating wheel 7.1 are circumferentially limited. The rotating wheel 7.1 is screwed onto the reduced diameter section.

[0033] The rotating wheel 7.1 is provided with several protrusions 7.12 on one side of the outer chuck 6.9. The inner side of the outer chuck 6.9 is provided with several inner protrusions 6.91 located between two adjacent protrusions 7.12. The outer side of the protrusions 7.12 is provided with several recesses 7.121. The outer chuck 6.9 and the rotating wheel 7.1 are limited by snap rings into all the recesses 7.121 of the protrusions 7.12. The main rotating shaft 6 is screwed with a limiting nut 11 at the end of the rotating handle 7.2. The limiting nut 11 is provided with a limiting groove 11.1. The main rotating shaft 6 is provided with a socket, into which a limiting member 12 is inserted and engaged in the limiting groove 11.1.

[0034] During operation, the traction rope is first wound around the grooves 3.1 of the two spools 3. The connecting hole 8.1 is fixed in a certain position by the hook. The person holds the free end of the traction rope and moves the hook 7.211 into the notch 7.11 by the lever 7.23. The rotating handle 7.2 is rotated in one direction, i.e., clockwise, so that the wheel 7.1 rotates relative to the reduced diameter section, and drives the outer chuck 6.9 to move towards the inner chuck 6.2. When it gets close enough, due to the presence of the inner friction plate 6.3 and the outer friction plate 6.5, the ratchet 6.4 and the main shaft 6 rotate. When the main shaft 6 rotates, the pinion 5.1 rotates, and the pinion 5.1 drives the first gear 5.21 to rotate. Since the first gear 5.21 and the second gear 5.22 rotate coaxially and are circumferentially limited by the auxiliary shaft, the second gear 5.22 and the first gear 5.21 rotate synchronously. Rotating gear 5.22 causes gear 5.3 to rotate, which in turn drives gear 4 to rotate, thus causing gear 3 to rotate. The rotation of gear 3 releases the traction rope to the free end. To avoid the rotating handle 7.2 from winding around, which is inconvenient, the rotating handle 7.2 can be reversed at a certain angle. When the rotating handle 7.2 is reversed, because one side of the hook 7.211 is inclined, it will slide over several notches 7.11. Therefore, the reverse rotation of the rotating handle 7.2 will not drive the wheel 7.1 to rotate in reverse. After reversing and then rotating forward, the hook 7.211 will directly contact the notch 7.11, continuing to drive the wheel 7.1 to rotate forward. This process of reversing and rotating the handle until the line is tightened is repeated. Because the ratchet 6.4 is engaged by the pawl 6.6 when reversing, the main shaft 6 will not rotate backward, and the gear 4 will not rotate backward either.

[0035] When it is necessary to disengage the outer chuck 6.9, the other hook 7.211 is engaged in the notch 7.11 by rotating the lever 7.23. Rotating the handle will then disengage the outer chuck 6.9 from the outer friction plate. Since there will be a certain gap between the threads, the inner spring 6.10 between the outer chuck 6.9 and the outer friction plate 6.5 can ensure the separation of the outer chuck 6.9 and the outer friction plate.

[0036] The described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

Claims

1. A tensioning device for a traction rope in power construction, comprising two side plates connected by a plurality of support shafts, and two sheaves further disposed between the two side plates, each sheave having a plurality of wire grooves, the two sheaves being connected to the two side plates via sheave shafts, characterized in that, One of the side plates has two thread pulley shafts at their ends equipped with thread pulley gears that rotate synchronously with the thread pulley shafts. The thread pulley shafts, thread pulleys, and thread pulley gears are circumferentially limited. A drive gear set is provided between the two thread pulley gears. The two thread pulley gears rotate synchronously through the drive gear set. The drive gear set is driven to rotate through a main shaft. A drive assembly is provided at the end of the main shaft away from the drive gear set. Connecting plates are also connected to the two side plates, and connecting holes are provided on the connecting plates. The drive gear set includes a pinion, two sets of auxiliary gear sets located on both sides of the pinion, and a transition gear arranged coaxially with the pinion. The pinion is circumferentially limited by the main shaft, and the transition gear can rotate relative to the main shaft. The auxiliary gear set includes a first gear meshing with the pinion and a second gear meshing with the transition gear. The side plate is provided with an auxiliary shaft for the rotation of the auxiliary gear set. The first gear and the second gear rotate coaxially and are circumferentially limited by the auxiliary shaft. The transition gear meshes with a spool gear. The drive assembly includes a rotating wheel fixed on a main shaft. The rotating wheel has several evenly distributed notches. A rotating handle is located on the rotating wheel, and a toggle block is located inside the rotating handle. A toggle shaft for rotating the toggle block is located on the rotating handle, and a toggle element for rotating the toggle shaft is located outside the rotating handle. The toggle block includes two hooks facing each other. A limiting rod is also located on the rotating handle, and a U-shaped element for engaging the limiting rod is located on the limiting rod. One end of the limiting rod has a limiting piece, and the other end has a limiting spring. The limiting spring extends beyond the limiting rod and is engaged within the U-shaped element. The toggle block has three limiting zones for engaging the limiting piece. The three limiting zones include a neutral limiting zone and two toggle limiting zones. When the limiting piece is located in the two toggle limiting zones, the two hooks are engaged in the notches, with one side of the hook being straight and the other side being inclined. When the limiting piece is located in the neutral limiting zone, both hooks disengage from the notches. Both of the toggle limiting areas and the limiting piece are of inferior arc shape; The main shaft has a reduced diameter section at the end of the protruding side plate of the drive assembly. The reduced diameter section has an external thread, and an inner chuck is screwed onto the external thread. The outer circumference of the inner chuck away from the side plate has an external concave ring. An inner friction plate, a ratchet, and an outer friction plate are sequentially fitted into the external concave ring. Two sets of pawls are provided on the outer circumference of the inner chuck. The pawls and the side plate are connected by a pawl shaft. A torsion spring is fitted on the pawl shaft. The two legs of the torsion spring are fixed to the side plate and the pawls, respectively. An outer chuck is also fitted on the outer side of the outer friction plate. An inner spring is fitted on the reduced diameter section. The inner spring is located between the outer chuck and the outer friction plate. The outer chuck and the rotating wheel are circumferentially limited. The rotating wheel is screwed onto the reduced diameter section. The rotating wheel is provided with several protrusions on one side of the outer chuck, and several inner protrusions are provided on the inner side of the outer chuck between two adjacent protrusions. Several recesses are provided on the outer side of the protrusions. The outer chuck and the rotating wheel are limited by snap rings that engage with all the recesses of the protrusions.

2. The electric power construction pulling rope tightener according to claim 1, characterized by The connecting plate is connected to the two side plates via a connecting plate pivot.

3. The electric power construction pulling rope tightener of claim 1 wherein, The auxiliary shaft is an extension of the second gear.

4. The electric power construction pulling rope tightener of claim 1 wherein, The main rotating shaft is located at the end of the rotating handle and is screwed with a limiting nut, the limiting nut is provided with a limiting slot, the main rotating shaft is provided with a insertion hole, a limiting piece is inserted into the insertion hole, and the limiting piece is clamped into the limiting slot.

5. The electric power construction pulling rope tightener of claim 1 wherein, The rotating handle is connected to the rotating wheel through a screw.

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