Wire tightening device for power construction

Abstract

The invention discloses an electric power construction wire tightening device, and relates to the technical field of electric power tools, the electric power construction wire tightening device comprises a wire tightening frame, a main shaft, a tightening wire and a mounting frame, the wire tightening frame is provided with two roll shafts, the roll shafts are provided with ratchet wheels, the ratchet wheels are provided with shaft grooves, the wire tightening frame is provided with pawls, and the pawls are inserted into ratchet wheel tooth grooves; the main shaft is arranged in the shaft groove in a sliding mode, a fastening groove is formed in the main shaft, a clamping groove is formed in the shaft groove, a spring connected with the clamping block is arranged in the fastening groove, and the clamping block is inserted into the clamping groove so that the main shaft and the roller shaft can rotate synchronously; the two ends of the fastening wire are arranged on the wire tightening frame and the roller shaft, a first movable pulley is arranged on the fastening wire in a sliding mode, and a hook is arranged on the first movable pulley; the mounting frame is arranged on two sides of the wire tightening frame, and a transmission mechanism for driving the main shaft to rotate is arranged on the mounting frame; the two side faces of the clamping block are inclined faces, a compression spring enabling the main shaft to move is arranged on the main shaft, and the main shaft can drive the roller shaft to wind the fastening line when rotating. The electric power construction wire tightening device provided by the invention has the advantage of tightening two wires at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of electric power tools, and in particular to an electric power construction line tightening device. Background Art

[0002] The wire tensioner, also called ratchet tensioner, is used to tighten the wire during the construction of overhead line installation. When using it, first loosen the wire rope or galvanized iron wire on the wire tensioner and fix it on the cross arm, clamp the wire with a wire clamp, and then turn the special wrench. Due to the anti-reversal effect of the ratchet, the wire rope or galvanized iron wire is gradually wound around the ratchet drum to tighten the wire.

[0003] The Chinese patent with patent publication number CN117638722A discloses a cable tensioner for high-voltage power grid construction, including a tensioner housing, a sliding rod, a wire rope, a hook, a movable pulley group and a ratchet, etc. The tensioner housing is rotatably connected to the sliding rod, the sliding rod is provided with a wire rope, the tensioner housing is installed with a movable pulley group, the movable pulley group and the tensioner housing are rotatably connected to the hook, and the two sliding rods are rotatably connected to the ratchet on the side away from each other.

[0004] Although the above patent can tighten two adjacent wires at the same time through the two pairs of hooks and the movable pulley group provided in the wire tensioner, since the tensioning degrees of the two wires may be different, the tightening degrees of the two wires may be different during the simultaneous tightening process, which may affect the normal installation of the wires. Summary of the invention

[0005] The invention provides a power construction line tightening device to solve the existing problem that when two wires are tightened at the same time, the tightening degrees of the two wires are different.

[0006] The present invention provides a power construction tightening device adopting the following technical solution: A power construction tightening device comprises a tightening wire frame, a main shaft, a tightening wire and an installation frame, wherein two roller shafts are rotatably arranged on the tightening wire frame, the two roller shafts are coaxially arranged and are each provided with a ratchet at one end away from each other, the ratchet is provided with an axis groove that can extend to the inside of the roller shaft, the tightening wire frame is provided with a pawl corresponding to the ratchet, and the pawl can be inserted into the tooth groove of the ratchet; the main shaft is slidably arranged in the axis groove, the outer wall of the main shaft is provided with a tightening groove, the inner wall of the axis groove is provided with a clamping groove corresponding to the tightening groove, a spring is provided in the tightening groove, the spring is connected with a clamping block, the clamping block is located in the tightening groove, one end of the clamping block is inserted into the clamping groove, and the main shaft can be tightened. The shaft rotates synchronously with the roller shaft; one end of the tightening wire is arranged on the tightening frame, and the other end is arranged on the roller shaft; a first movable pulley is slidably arranged on the tightening wire, and a hook is rotatably arranged on the first movable pulley, and the hook is used to connect with the wire to be tightened; the mounting frame is arranged on both sides of the tightening frame, and can be covered on the ratchet on the corresponding side, and a transmission mechanism is arranged on the mounting frame, and the transmission mechanism can drive the main shaft to rotate in the positive direction; wherein, the two side surfaces of the block are inclined surfaces, and a compression spring is arranged on the main shaft, and the compression spring always makes the main shaft have a tendency to move in its axial direction, and can drive the roller shaft to reel in the tightening wire when the main shaft rotates in the positive direction.

[0007] Further, the transmission mechanism includes a synchronization component and a driving component, the synchronization component includes a synchronization moving shaft and a planetary gear set, the synchronization moving shaft is inserted into the shaft groove, the synchronization moving shaft is coaxially arranged with the main shaft and passes through the main shaft and the corresponding mounting frame, a fixing plate is arranged on the synchronization moving shaft, the main shaft can push the synchronization moving shaft to move through the fixing plate, the planetary gear set is arranged on the mounting frame, and one end of the main shaft extending out of the shaft groove is matched and connected with the planetary gear set; The driving assembly is arranged on the mounting frame and is located above the planetary gear set, and the driving assembly comprises a switching shaft, a driving member, a synchronous driving shaft and a synchronous transmission member, the switching shaft is arranged on the mounting frame, and a switching wheel is arranged at one end of the switching shaft located in the mounting frame, the driving member is arranged at one end of the switching shaft away from the switching wheel, the synchronous driving shaft is arranged on the tensioning frame, the synchronous driving shaft is coaxially arranged with the switching shaft and is located on a side of the switching shaft away from the driving member, driving wheels are arranged at both ends of the synchronous driving shaft, a first clamping assembly is arranged between the switching wheel and the driving wheel, and the switching wheel can drive the driving wheel to rotate through the first clamping assembly; The synchronous transmission member is arranged on the switching shaft, the synchronous transmission member is cooperatively connected with the planetary gear set, and the synchronous transmission member can drive the main shaft to rotate through the planetary gear set; A synchronization plate is arranged between the switching shaft and the synchronous moving shaft, and the synchronous moving shaft can drive the switching shaft to move through the synchronization plate when the synchronous moving shaft moves axially.

[0008] Furthermore, the synchronous transmission part includes a reel, a synchronous rack and a winding wire, the reel is sleeved on the switching shaft and installed on the mounting frame, the reel is located on a side of the switching wheel away from the driving wheel, a second clamping assembly is provided between the reel and the switching wheel, and the switching wheel can drive the reel to rotate through the second clamping assembly, one end of the winding wire is fixed to the reel, and the other end is arranged on the tensioning frame, and a fixed pulley corresponding to the reel is arranged on the tensioning frame, the winding wire bypasses the fixed pulley, and a second movable pulley is slidably arranged on the winding wire, the synchronous rack is slidably arranged on the winding wire through the second movable pulley, and the synchronous rack is cooperatively connected with the planetary gear set.

[0009] Further, the first clamping assembly includes a first driving tooth and a first driving tooth groove, the first driving tooth is arranged on a side surface of the switching wheel away from the driving member, the first driving tooth groove is opened on a side surface of the driving wheel facing the switching shaft, the first driving tooth groove is adapted to the first driving tooth, and the first driving tooth can be inserted into the corresponding first driving tooth groove to drive the driving wheel to rotate.

[0010] Furthermore, the second clamping assembly includes a second drive tooth and a second drive tooth groove, the second drive tooth is arranged on a side surface of the switching wheel away from the driving wheel, the second drive tooth groove is opened on a side surface of the winding wheel facing the switching wheel, the second drive tooth groove is adapted to the second drive tooth, and the second drive tooth can be inserted into the corresponding second drive tooth groove to drive the winding wheel to rotate.

[0011] Furthermore, the synchronous rack includes two side rods and a connecting rod connected between the two side rods, and the side rods correspond to the planetary gear set.

[0012] Further, the main shaft comprises a main body and a gear part, the main body and the gear part are integrally formed, the fastening groove is provided on the side wall of the main body, and the side wall of the gear part is provided with a plurality of tooth grooves evenly distributed around the central axis of the gear part; The planetary gear set comprises a ring gear and a planetary wheel, the ring gear is rotatably arranged in the mounting frame, the inner side wall and the outer side wall of the ring gear are both provided with teeth, the gear part extends into the ring gear and is coaxially arranged with the ring gear, the planetary gear is mounted on the mounting frame via a fixed shaft, the planetary gear is located between the inner teeth of the ring gear and the gear part, and the planetary wheel is meshed with the inner teeth of the ring gear and the tooth grooves of the gear part; The outer teeth of the gear ring include first teeth and second teeth. The first teeth are located on the side of the gear ring away from the tensioning frame. The first teeth can mesh with the synchronous rack, and the second teeth can mesh with the driving wheel.

[0013] Furthermore, the driving member is a handle arranged on the switching shaft.

[0014] Furthermore, the tightening wire is arranged at one end of the tightening wire frame and is slidably connected to the tightening wire frame.

[0015] Furthermore, two fixing hooks are arranged on the tensioning frame, and the two fixing hooks correspond to the two roller shafts respectively.

[0016] The beneficial effects of the present invention are: The invention discloses a power construction tightening device, wherein the transmission mechanism can drive the main shaft to rotate, and the main shaft drives the roller shaft to rotate through the clamping block and the clamping slot, and the rotation of the roller shaft can reel in the tightening wire, and the hook on the tightening wire can be connected to the wire to be tightened, and when two wires need to be tightened at the same time, the two wires can be connected to the two hooks respectively; When the roller rotates, the fastening line becomes tighter and tighter. When one of the two wires is tightened with the corresponding fastening line, the roller may not be able to continue to rotate. When the transmission mechanism continues to drive the main shaft to rotate, the inclined surface of the clamping block may be pressed by the clamping groove and retracted into the fastening groove. At this time, the main shaft and the shaft groove no longer have a fixed connection relationship. The main shaft will slide along its axial direction under the action of the elastic force of the compression spring, so that the clamping block is no longer opposite to the corresponding clamping groove; then continue to rotate the main shaft, at this time, the roller connected to the tightened wire will slip with the corresponding main shaft, and the other roller will continue to wind the fastening line. When the other roller rotates until it can no longer rotate, it means that the fastening line on the other roller is also tightened, thereby achieving the simultaneous tightening of the two wires.

[0017] Since the two rollers stop rotating by the block on the main shaft being separated from the corresponding slot, and the force that can make the block just separate from the slot should be constant, the pulling force applied by the two rollers to the fastening wire should also be constant, which ensures that the tightening degree of the two fastening wires is basically the same, and the tightening degree of the corresponding two wires to be tightened is also basically the same, avoiding the difficulty of wire installation due to different tightening degrees of the wires, and making it more convenient to install the wires; In addition, the first movable pulley arranged on the fastening line can reduce the force required by the transmission mechanism when driving the main shaft to rotate, so that the transmission mechanism can rotate the main shaft more easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A schematic diagram of the overall structure of a power construction tightening device provided by an embodiment of the present invention; Figure 2 A schematic diagram of the side structure of a power construction tightening device provided by an embodiment of the present invention; Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure in the AA direction; Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part B; Figure 5 A schematic diagram of the front structure of a power construction tightening device provided by an embodiment of the present invention; Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure in the CC direction; Figure 7 for Figure 6 A schematic diagram of the enlarged structure of the D part; Figure 8 A schematic diagram of the partial structure of a power construction tightening device provided by an embodiment of the present invention; Fig. 9 for Figure 8 A schematic diagram of the enlarged structure of part E in the middle; Fig.10 A schematic structural diagram of a main shaft being separated from a tensioning frame in a power construction tensioning device provided by an embodiment of the present invention; Fig.11A schematic diagram of a structure in which a main shaft of a power construction tightening device provided by an embodiment of the present invention is arranged on a mounting frame; Fig.12 A schematic diagram of an exploded structure of a synchronous drive shaft and a switching shaft in a power construction tightening device provided by an embodiment of the present invention; Fig.13 A schematic structural diagram of an installation frame in a power construction tightening device provided in an embodiment of the present invention.

[0020] In the figure: 100, tightening frame; 101, threading hole; 1101, ratchet; 1102, ratchet; 110, roller; 111, first roller; 112, second roller; 120, shaft groove; 121, clamping groove; 130, fixed pulley; 140, sliding hole; 150, fixing hook; 200, mounting frame; 210, arc plate; 220, fixed shaft; 300, tightening wire; 310, first movable pulley; 320, hook; 400, main shaft; 401, tightening groove; 402, spring; 403, clamping block; 410, first Main shaft; 420, second main shaft; 430, compression spring; 610, synchronous moving shaft; 611, synchronous plate; 620, planetary gear set; 621, ring gear; 622, planetary gear; 710, switching shaft; 711, switching wheel; 720, driving member; 730, synchronous driving shaft; 731, driving wheel; 740, synchronous transmission member; 741, winding wheel; 742, synchronous rack; 743, winding; 800, first clamping assembly; 810, first driving tooth; 820, first driving tooth groove; 910, second driving tooth. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] like Figures 1 to 13 As shown, an electric power construction tightening device provided by an embodiment of the present invention includes a tightening frame 100, an installation frame 200, a tightening wire 300 and a main shaft 400. Two rollers 110 are rotatably arranged on the tightening frame 100, and the two rollers 110 are coaxially arranged and are provided with ratchets 1101 at one end away from each other. The ratchet 1101 is provided with an axial groove 120 that can extend to the inside of the roller 110, and the tightening frame 100 is provided with a ratchet 1102 corresponding to the ratchet 1101, and the ratchet 1102 can be inserted into the tooth groove of the ratchet 1101.

[0025] Specifically, the tensioning frame 100 can be a frame with high structural strength, the tensioning frame 100 can be a U-shaped frame, and a partition can be set in the middle of the tensioning frame 100, and the partition can separate the tensioning frame 100 into two separate frames. The two rollers 110 are rotatably connected in the two separate frames, and the two rollers 110 are coaxially arranged. Ratchets 1101 are arranged on both sides of the tensioning frame 100, and the two ratchet wheels 1101 are respectively installed at the ends of the two rollers 110 that are away from each other, and the ratchet wheels 1101 are coaxially arranged with the corresponding rollers 110. The ratchet wheels 1101 and the corresponding rollers 110 can be fixedly connected, and when the ratchet wheels 1101 rotate, the corresponding rollers 110 rotate synchronously. The ratchet pawls 1102 are rotatably arranged on both sides of the tensioning frame 100 and correspond to the ratchet wheels 1101 on the corresponding side of the tensioning frame 100 respectively. The ratchet 1101 can rotate forward or reverse in its axial direction. When the ratchet 1101 rotates forward, the pawl 1102 will continuously jump along with the teeth on the ratchet 1101. When the ratchet 1101 rotates reversely, the pawl 1102 will be inserted into the tooth groove of the ratchet 1101 to prevent the ratchet 1101 from reversing.

[0026] Two tightening wires 300 may be provided, and the two tightening wires 300 correspond to two roller shafts 110 respectively. One end of the tightening wire 300 is provided on the tightening frame 100, and the other end is provided on the corresponding roller shaft 110. A first movable pulley 310 is slidably provided on the tightening wire 300, and a hook 320 is rotatably provided on the first movable pulley 310, and the hook 320 is used to connect with the wire to be tightened.

[0027] Specifically, a threading hole 101 may be provided at the bottom of the tensioning frame 100, and the length direction of the threading hole 101 may be parallel to the axial direction of the roller shaft 110. Two threading holes 101 may be provided, and the two threading holes 101 are sequentially distributed on the bottom surface of the tensioning frame 100 in a direction perpendicular to the axial direction of the roller shaft 110. The fastening wire 300 may be a steel wire rope, one end of which may be slidably arranged on the top of the tensioning frame 100, and the other end may sequentially pass through the two threading holes 101, and finally be wound on the roller shaft 110. A first movable pulley 310 is slidably arranged on the part of the wire body of the fastening wire 300 passing through the threading holes 101, and the first movable pulley 310 is located below the tensioning frame 100. A mounting seat is provided on the first movable pulley 310, and a hook 320 may be rotatably arranged on the mounting seat. The hook 320 can be used to connect with the wire to be tightened. The first movable pulley 310 can reduce the force applied by the transmission mechanism to the winding wire.

[0028] The main shaft 400 is slidably arranged in the shaft groove 120, and a compression spring 430 is arranged on the main shaft 400. The elasticity of the compression spring 430 always makes the main shaft 400 have a tendency to move in its axial direction. A fastening groove 401 is provided on the outer wall of the main shaft 400, and a key groove corresponding to and communicating with the fastening groove 401 is provided on the inner wall of the shaft groove 120. A spring 402 is arranged in the fastening groove 401, and a clamping block 403 is connected to the spring 402. The two side surfaces of the clamping block 403 are inclined surfaces. The clamping block 403 is located in the fastening groove 401, and one end of the clamping block 403 is inserted into the key groove, so that the main shaft 400 and the roller shaft 110 can rotate synchronously.

[0029] The mounting frame 200 is arranged on both sides of the tightening frame 100, and can be covered on the ratchet 1101 on the corresponding side of the tightening frame 100. A transmission mechanism is arranged on the mounting frame 200, and the transmission mechanism can drive the main shaft 400 to rotate forward. When the main shaft 400 rotates forward, it can drive the roller 110 to reel in the tightening wire 300.

[0030] Specifically, two main shafts 400 are provided, and the two main shafts 400 correspond to the two roller shafts 110 respectively. The two main shafts 400 can be respectively inserted into the shaft grooves 120 of the corresponding roller shafts 110 and can slide in the corresponding shaft grooves 120. The mounting frame 200 is arranged on both sides of the tensioning frame 100, and is respectively covered on the ratchet 1101 on the corresponding side of the tensioning frame 100. The main shaft 400 is slidably arranged in the corresponding shaft groove 120 between the bottom of the shaft groove 120 and the mounting frame 200 on the corresponding side. Among them, the main shaft 400 can be a rigid shaft body with high structural strength and is not easy to be damaged. The mounting frame 200 can be a frame with high structural strength and similar to a cover-like structure. The mounting frame 200 can protect the structures such as the ratchet 1101 and the pawl 1102, and also avoid the possibility of the staff touching the ratchet 1101.

[0031] The compression spring 430 is arranged on the main shaft 400, and its elastic force can act on the main shaft 400, so that the main shaft 400 always has a tendency to slide in its axial direction. The block 403 in the fastening groove 401 can be inserted into the keyway on the inner wall of the shaft groove 120 under the elastic force of the spring 402, so that when the main shaft 400 rotates, the roller 110 corresponding to the main shaft 400 can rotate synchronously with the main shaft 400. Among them, the side surface of the block 403 in its rotation direction is an inclined surface. When the inner wall of the slot 121 contacts the inclined surface of the block 403, the slot wall of the slot 121 may press against the side surface of the block 403, and then the inclined surface of the block 403 is pressed into the fastening groove 401 by the pressure of the slot wall of the slot 121, so that the block 403 is separated from the slot 121. A transmission mechanism is provided in the installation frame 200, which can drive the main shaft 400 to rotate in the forward direction. When the main shaft 400 rotates in the forward direction, it can drive the corresponding roller 110 to reel in the tightening wire 300. When the tightening wire 300 is reeled in, the wire to be tightened hung on the corresponding hook 320 can be gradually tightened.

[0032] For the convenience of description, the roller 110 close to the right side of the tensioning frame 100 can be defined as the first roller 111, the roller 110 close to the left side of the tensioning frame 100 can be defined as the second roller 112, the main shaft 400 slidably set in the shaft groove 120 of the first roller 111 is set as the first main shaft 410, and the main shaft 400 slidably set in the shaft groove 120 of the second roller 112 is set as the second main shaft 420.

[0033] The compression spring 430 corresponding to the first main shaft 410 is located between the first main shaft 410 and the corresponding mounting frame 200 , and the compression spring 430 corresponding to the second main shaft 420 is located between the second main shaft 420 and the bottom of the corresponding shaft groove 120 , and the compression spring 430 is in a compressed state.

[0034] When the synchronization mechanism drives the first spindle 410 and the second spindle 420 to rotate in the forward direction, if the first roller 111 / the second roller 112 stops rotating, it means that the first roller 111 / the second roller 112 has tightened the fastening wire 300. At this time, the synchronization mechanism continues to drive the first spindle 410 / the second spindle 420 to rotate, and the block 403 on the first spindle 410 / the second spindle 420 will be retracted into the fastening groove 401 by the pressure of the corresponding slot 121 wall; while the block 403 is retracted into the fastening groove 401 by the force, the first spindle 410 / the second spindle 420 is free from the restriction of the block 403, and can slide in the corresponding shaft groove 120. While the first spindle 410 / the second spindle 420 is free from the restriction of the block 403, it will be pressured by the corresponding compression spring 430, and will move to the left side of the tensioning frame 100, and at this time the block 403 is no longer corresponding to the slot 121. When the synchronization mechanism continues to drive the first main shaft 410 and the second main shaft 420 to rotate in the forward direction, the first main shaft 410 / the second main shaft 420 will idle in the corresponding shaft groove 120, and the first roller 111 / the second roller 112 corresponding to the first main shaft 410 / the second main shaft 420 will not rotate due to the action of the ratchet 1101 and the pawl 1102. The second main shaft 420 / the first main shaft 410 that has not stopped rotating will continue to drive the corresponding second roller 112 / the first roller 111 to rotate until the second roller 112 / the first roller 111 also stops rotating. When both rollers 110 stop rotating, it means that the present invention has completed the fastening of the two wires.

[0035] The operating principle of this embodiment is: The transmission mechanism drives the main shaft 400 to rotate, and the main shaft 400 drives the roller 110 to rotate through the block 403 and the slot 121. The rotation of the roller 110 can reel in the tightening wire 300, and the hook 320 on the tightening wire 300 can be connected to the wire to be tightened. When tightening two wires at the same time, the two wires need to be connected to the two hooks 320 of the present invention respectively, and then the main shaft 400 is driven to rotate by the transmission mechanism, and the main shaft 400 drives the roller 110 to rotate through the block 403 and the slot 121, and the roller 110 reels the tightening wire 300 when rotating; As the roller 110 rotates, the fastening wire 300 becomes tighter and tighter. When one of the two wires is tightened with the corresponding fastening wire 300, the roller 110 may not be able to continue to rotate. When the transmission mechanism continues to drive the main shaft 400 to rotate, the inclined surface of the clamping block 403 may be pressed by the clamping groove 121 and retract into the fastening groove 401; when the clamping block 403 retracts into the corresponding fastening groove 401, the main shaft 400 will slide along its axial direction under the elastic force of the compression spring 430, so that the clamping block 403 is no longer opposite to the corresponding clamping groove 121, and then the main shaft 400 continues to rotate. At this time, the roller 110 with the wire tightened will slip with the corresponding main shaft 400, and the other roller 110 will continue to wind the fastening wire 300. When the other roller 110 rotates until it can no longer rotate, it means that the fastening wire 300 on the other roller 110 is also tightened, thereby achieving the simultaneous tightening of the two wires. Since the two rollers 110 stop rotating by relying on the block 403 on the main shaft 400 to disengage from the corresponding slot 121, and when the block 403 disengages from the slot 121, the pressure exerted on the block 403 should be constant, so the tension applied by the two rollers 110 to the fastening wire 300 should also be constant, which ensures that the tightening degrees of the two fastening wires 300 are basically the same, and the tightening degrees of the corresponding two wires to be tightened are also basically the same.

[0036] In some embodiments, the transmission mechanism includes a synchronization component and a driving component. The synchronization component includes a synchronization moving shaft 610 and a planetary gear set 620. The synchronization moving shaft 610 is inserted into the shaft groove 120. The synchronization moving shaft 610 is coaxially arranged with the main shaft 400 and passes through the main shaft 400 and the corresponding mounting frame 200. A fixing plate is arranged on the synchronization moving shaft 610. The main shaft 400 can push the synchronization moving shaft 610 to move in the shaft groove 120 through the fixing plate. The planetary gear set 620 is arranged on the mounting frame 200, and one end of the main shaft 400 extending out of the shaft groove 120 is matched with the planetary gear set 620.

[0037] Specifically, two fixing plates can be provided on the synchronous moving shaft 610, and the two fixing plates are both provided on the left side of the corresponding main shaft 400 in the two shaft grooves 120, and both contact with the corresponding main shaft 400. The main shaft 400 can push the synchronous moving shaft 610 to slide in the shaft groove 120 through the fixing plates.

[0038] The driving assembly is arranged on the mounting frame 200 and is located above the planetary gear set 620. The driving assembly includes a switching shaft 710, a driving member 720, a synchronous driving shaft 730 and a synchronous transmission member 740. The switching shaft 710 is arranged on the mounting frame 200, and a switching wheel 711 is arranged at one end of the switching shaft 710 located in the mounting frame 200. The driving member 720 is arranged at one end of the switching shaft 710 away from the switching wheel 711. The synchronous driving shaft 730 is arranged on the tensioning frame 100, and the switching shaft 710 is coaxially arranged with the synchronous driving shaft 730 and the synchronous driving shaft 730 is located on the side of the switching shaft 710 away from the driving member 720. The driving wheels 731 are arranged at both ends of the synchronous driving shaft 730, and a first clamping assembly 800 is arranged between the switching wheel 711 and the driving wheel 731, and the switching wheel 711 can drive the driving wheel 731 to rotate through the first clamping assembly 800. The synchronous transmission member 740 is disposed on the switching shaft 710 . The synchronous transmission member 740 is connected with the planetary gear set 620 . The synchronous transmission member 740 can drive the main shaft 400 to rotate through the planetary gear set 620 .

[0039] Specifically, the switching shaft 710 may be a shaft parallel to the axial direction of the main shaft 400, and the switching shaft 710 is mounted on the mounting frame 200 and is movably connected to the mounting frame 200. The switching shaft 710 can not only rotate on the mounting frame 200, but also slide relative to the mounting frame 200. A switching wheel 711 is provided at one end of the switching shaft 710 located on the mounting frame 200, and the switching shaft 710 is located on one side of the tensioning frame 100 and above the planetary gear set 620. The driving member 720 may be a power source such as a motor that can drive the switching shaft 710 to rotate. The driving member 720 is arranged at one end of the switching shaft 710 away from the tensioning frame 100, and the driving member 720 is arranged outside the mounting frame 200, and the driving member 720 can drive the switching shaft 710 to rotate on the mounting frame 200.

[0040] The synchronous drive shaft 730 may be a long shaft body rotatably arranged on the tensioning frame 100, and the synchronous drive shaft 730 is coaxially arranged with the switching shaft 710 and is located on the side of the switching shaft 710 away from the driving member 720. The driving wheels 731 are coaxially arranged at both ends of the synchronous drive shaft 730, and the driving wheels 731 may be gears.

[0041] The first clamping component 800 between the switching wheel 711 and the driving wheel 731 may include a first driving tooth 810 and a first driving tooth groove 820. The first driving tooth 810 is provided on the end face of the switching wheel 711 away from the driving member 720. The first driving tooth groove 820 is formed on the side face of the driving wheel 731 facing the switching shaft 710. A plurality of first driving teeth 810 may be provided. The plurality of first driving teeth 810 can be evenly distributed around a circumference with the center of the end face of the switching wheel 711 as the center on the corresponding side face of the switching wheel 711. A plurality of first driving tooth grooves 820 may also be formed on the driving wheel 731. The plurality of first driving tooth grooves 820 are respectively adapted to the plurality of first driving teeth 810, and the first driving teeth 810 can be inserted into the first driving tooth grooves 820. When the first driving teeth 810 are inserted into the corresponding first driving tooth grooves 820, the rotation of the switching shaft 710 can drive the rotation of the switching wheel 711, and further drive the rotation of the driving wheel 731.

[0042] The synchronous transmission member 740 may include a winding wheel 741, a synchronous rack 742 and a winding wire 743. The winding wheel 741 is sleeved on the switching shaft 710 and is installed on the installation frame 200 where the switching shaft 710 is located. The winding wheel 741 is located on the side of the switching wheel 711 away from the driving wheel 731. A second clamping component is provided between the winding wheel 741 and the switching wheel 711, and the switching wheel 711 can drive the winding wheel 741 to rotate through the second clamping component. One end of the winding wire 743 is fixed on the winding wheel 741, and the other end is arranged on the tight wire frame 100. A fixed pulley 130 corresponding to the winding wheel 741 is provided on the tight wire frame 100. The winding wire 743 bypasses the fixed pulley 130, and a second movable pulley is slidably arranged on the winding wire 743. The synchronous rack 742 is arranged on the second movable pulley, so that the synchronous rack 742 is slidably arranged on the winding wire 743, and the synchronous rack 742 is connected with the planetary gear set 620 in a matching manner.

[0043] The second movable pulley can reduce the force applied by the driving member 720 to drive the rotation of the switching shaft 710. The synchronous rack 742 may be a "U" - shaped structure. The synchronous rack 742 includes two side rods and a connecting rod connecting the two side rods. Among them, the side rods are racks, and the side rods can be connected with the planetary gear set 620 in a matching manner. It should be noted that both the winding wheel 741 and the second movable pulley are located inside the installation frame 200, and the side rods of the synchronous rack 742 are inserted into the installation frame 200 and contact the inner wall of the installation frame 200. The installation frame 200 can not only protect the winding wheel 741 and the second movable pulley, but also ensure that when the synchronous rack 742 moves on the installation frame 200, the synchronous rack 742 always contacts the inner wall of the installation frame 200, avoiding the situation that the synchronous rack 742 tilts when moving inside the installation frame 200.

[0044] The second clamping assembly between the reel 741 and the switching wheel 711 may include a second drive tooth 910 and a second drive tooth groove, wherein the second drive tooth 910 is arranged on a side surface of the switching wheel 711 away from the drive wheel 731, and the second drive tooth groove is provided on a side surface of the reel 741 facing the switching wheel 711. A plurality of second drive teeth 910 may be provided, and the plurality of second drive teeth 910 are distributed around a circle with the center of the side surface of the switching wheel 711 as the center of the circle on the corresponding side surface of the switching wheel 711. A plurality of second drive tooth grooves may also be provided on the reel 741, and the plurality of second drive tooth grooves are respectively adapted to the plurality of second drive teeth 910, and the second drive teeth 910 can be inserted into the second drive tooth grooves. When the second drive teeth 910 are inserted into the corresponding second drive tooth grooves, the switching shaft 710 can drive the reel 741 to rotate through the switching wheel 711 when rotating, thereby realizing the reel 741 to reel the wire 743.

[0045] In this embodiment, the main shaft 400 includes a main body and a gear part, and the main body and the gear part are integrally formed, wherein the fastening groove 401 is provided on the side wall of the main body. The gear part is located at one end of the main body, and when the main shaft 400 is arranged in the shaft groove 120, the gear part is located at the end of the main body away from the bottom of the shaft groove 120. The gear part can be a gear, or a shaft body with a tooth groove provided on the side wall. In this embodiment, the gear part is a shaft body with a plurality of tooth grooves provided on the side wall, and the plurality of tooth grooves are evenly distributed on the side wall of the gear part around the central axis of the gear part.

[0046] The planetary gear set 620 may include a ring gear 621 and a planetary wheel 622. The ring gear 621 is rotatably arranged in the mounting frame 200. The inner side wall and the outer side wall of the ring gear 621 are both provided with teeth. The gear portion of the main shaft 400 extends into the ring gear 621 and is coaxially arranged with the ring gear 621. The planetary gear is installed on the mounting frame 200 through the fixed shaft 220. The planetary gear is located between the inner teeth of the ring gear 621 and the gear portion. The planetary wheel 622 is meshed with the inner teeth of the ring gear 621 and the side wall teeth of the gear portion.

[0047] Specifically, two arc plates 210 are installed in the installation frame, and the two arc plates 210 are symmetrically arranged in the installation frame about the synchronous moving shaft 610. The gear ring 621 is arranged between the two arc plates 210 and can be rotatably connected with the two arc plates 210. The gear ring 621 is coaxially arranged with the synchronous moving shaft 610. A plurality of teeth are arranged on the inner side wall and the outer side wall of the gear ring 621, and the plurality of teeth are evenly distributed on the outer ring wall and the inner ring wall of the gear ring 621 along the circumference with the center of the annular cross section of the gear ring 621 as the center of the circle. A fixed shaft 220 is also arranged in the installation frame 200, and the fixed shaft 220 is fixed on the side of the installation frame 200 facing the tensioning frame 100, and the axial direction of the fixed shaft 220 is parallel to the axial direction of the synchronous moving shaft 610. Three fixed shafts 220 can be arranged, and the three fixed shafts 220 are evenly distributed around the circumference with the center of the gear ring 621 as the center of the circle. Three planetary gears 622 may be provided, and the three planetary gears 622 are respectively mounted on three fixed shafts 220 .

[0048] More specifically, the teeth located on the outer ring wall of the gear ring 621 are the outer teeth of the gear ring 621, and the outer teeth include first teeth and second teeth. The first teeth are located on the side of the gear ring 621 away from the tensioning frame 100, and the arc plate 210 is located between the first teeth and the second teeth. The first teeth can mesh with the side rod of the synchronous rack 742, and the second teeth can mesh with the driving wheel 731.

[0049] In this embodiment, a synchronization plate 611 is disposed between the switching shaft 710 and the synchronous moving shaft 610 , and the synchronous moving shaft 610 can drive the switching shaft 710 to move through the synchronization plate 611 when the synchronous moving shaft 610 moves in its axial direction.

[0050] Specifically, the synchronous plate 611 may be a plate member perpendicular to the axial direction of the synchronous moving shaft 610 / the switching shaft 710. The synchronous moving shaft 610 may be provided with a first end plate and a limit plate. The first end plate is located at the end of the synchronous moving shaft 610, and the limit plate is located between the first end plate and the mounting frame 200 adjacent thereto. The synchronous moving shaft 610 may pass through the synchronous plate 611 and be rotationally connected to the synchronous plate 611. The synchronous plate 611 is located between the first end plate and the limit plate on the synchronous moving shaft 610, so that the synchronous moving shaft 610 can drive the synchronous plate 611 to move synchronously when the synchronous moving shaft 610 moves in its axial direction.

[0051] One end of the synchronization plate 611 away from the synchronization moving shaft 610 is arranged on the switching shaft 710, and the switching shaft 710 is rotationally connected with the synchronization plate 611. The switching shaft 710 may be provided with a buffer plate and a second end plate, the buffer plate is fixed on the switching shaft 710 and is located on the shaft body of the switching shaft 710 extending out of the mounting frame 200. The second end plate is arranged between the switching shaft 710 and the driving member 720. The synchronization plate 611 is located between the buffer plate and the second end plate on the switching shaft 710, and a buffer spring may be sleeved on the switching shaft 710, and the buffer spring is located between the buffer plate and the synchronization plate 611. When the synchronization moving shaft 610 moves in its axial direction, the synchronization plate 611 can drive the buffer spring to be compressed, thereby enabling the switching shaft 710 to move in its axial direction. The buffer spring can reduce the impact force received by the switching shaft 710 during instantaneous sliding.

[0052] The roller 110 close to the right side of the tensioning frame 100 is defined as the first roller 111, the roller 110 close to the left side of the tensioning frame 100 is defined as the second roller 112, the main shaft 400 slidably set in the shaft groove 120 of the first roller 111 is set as the first main shaft 410, and the main shaft 400 slidably set in the shaft groove 120 of the second roller 112 is set as the second main shaft 420.

[0053] In this embodiment, in the initial state, the second drive teeth 910 on the switching wheel 711 are inserted into the second drive tooth groove on the reel 741. The switching shaft 710 can be driven to rotate by the driving member 720, and the switching wheel 711 rotates accordingly. The switching wheel 711 drives the reel 741 to rotate through the second drive teeth 910 and the second drive tooth groove. When the reel 741 rotates, the winding wire 743 can be wound up, thereby driving the synchronous rack 742 to rise. Since the side rod of the synchronous rack 742 is engaged with the first teeth of the gear ring 621, the gear ring 621 can be driven to rotate. When the gear ring 621 rotates, the first main shaft 410 and the second main shaft 420 can be driven to rotate through the planetary gear, thereby driving the corresponding first roller 111 and the second roller 112 to rotate. The first roller 111 and the second roller 112 can wind up the tightening wire 300. When the hook 320 on the tightening wire 300 is connected to the wire to be tightened, the present invention can tighten the wire to be tightened. During the process of the driving member 720 driving the switching shaft 710 to rotate, if the first roller 111 and the second roller 112 cannot continue to rotate at the same time, it means that the wires to be tightened corresponding to the two rollers 110 have been tightened; If only the first roller 111 cannot continue to rotate, it means that the wire corresponding to the first roller 111 is tightened. At this time, the block 403 on the first main shaft 410 will retract into the corresponding fastening groove 401. There is no fixed connection between the first main shaft 410 and the first roller 111, and the first main shaft 410 will slide to the left under the action of its corresponding compression spring 430. When the first main shaft 410 slides, it will drive the switching shaft 710 to slide to the left synchronously through the synchronization plate 611, thereby driving the switching wheel 711 to slide to the left, and the second driving tooth 910 on the switching wheel 711 will disengage from the second driving tooth groove on the winding wheel 741. At the same time, the first driving tooth 810 on the switching wheel 711 will be inserted into the first driving tooth groove on the driving wheel 731. The tooth groove 820 can drive the driving wheel 731 to rotate, and the driving wheel 731 drives the synchronous driving shaft 730 to rotate, and then drives the driving wheel 731 at the other end of the synchronous driving shaft 730 to rotate. The driving wheel 731 of the synchronous driving shaft 730 away from the switching shaft 710 will drive the gear ring 621 on the corresponding side to rotate, and then drive the second main shaft 420 to rotate. The second main shaft 420 drives the second roller 112 to rotate through the clamping block 403, and the second roller 112 reels the fastening wire 300 connected thereto, thereby tightening the wire connected to the second roller 112. When the second roller 112 no longer rotates, it means that the wire connected to the second roller 112 through the hook 320 and the fastening wire 300 is also tightened. If only the second roller 112 cannot continue to rotate, the block 403 on the second main shaft 420 will retract into the fastening groove 401 on the second main shaft 420, and the second main shaft 420 will slide to the left under the elastic force of the corresponding compression spring 430. At this time, the ring gear 621 on one side of the second main shaft 420 will continue to rotate under the drive of the synchronous rack 742, but the ring gear 621 will only drive the second main shaft 420 to idle in the shaft groove 120. As for the ring gear 621 on the side of the first main shaft 410, it will continue to drive the first main shaft 410 to rotate, and then drive the first roller 111 to rotate until the first roller 111 no longer rotates. When the first roller 111 cannot continue to rotate, it means that the wire connected to the first roller 111 through the hook 320 and the fastening wire 300 is also tightened.

[0054] It should be noted that after the first roller 111 or the second roller 112 becomes unable to rotate, since the first roller 111 and the second roller 112 are both connected to corresponding ratchet wheels 1101, and the tensioning frame 100 is provided with a pawl 1102 adapted to the ratchet wheel 1101, under the action of the ratchet wheel 1101 and the pawl 1102, the first roller 111 and the second roller 112 will not reverse.

[0055] After tightening and fixing the two wires, the synchronous moving shaft 610 can be pushed toward the direction close to the switching shaft 710. The synchronous moving shaft 610 will push the first main shaft 410 and the second main shaft 420 to return to the initial position, and release the pawl 1102 stuck on the ratchet 1101. Rotating the first roller 111 and the second roller 112 can separate the hook 320 from the wire to be tightened. After that, the present invention can be adjusted to the initial state and can be used for the next work.

[0056] In summary, the present embodiment can realize the tightening of two wires at the same time, and because the pressure required for the clamping block 403 on the main shaft 400 to disengage from the corresponding clamping slot 121 is substantially the same, the tension exerted on the wires when the wires are tightened is also substantially the same, thus avoiding the difficulty in erecting the wires due to different tightening degrees of the wires, and making it more convenient to erect the wires; In addition, the two sets of movable pulleys provided in the present invention can reduce the force required to drive the switching shaft 710 to rotate, greatly reducing the difficulty of the workers in tightening the wires.

[0057] In some embodiments, the driving member 720 is a handle mounted on the switching shaft 710, and the wires can be tightened by turning the handle.

[0058] Furthermore, the fastening wire 300 is disposed at one end of the wire tensioning frame 100 and can be slidably connected to the wire tensioning frame 100 .

[0059] Specifically, a sliding hole 140 parallel to the axis of the main shaft 400 is provided at the top of the tightening frame 100, and one end of the tightening wire 300 away from the roller shaft 110 is inserted into the sliding hole 140 from the bottom of the tightening frame 100 and extends out, and the tightening wire 300 extending out of the sliding hole 140 is fixedly connected with a slider, which is located at the top of the tightening frame 100 and cannot pass through the sliding hole 140. When the tightening wire 300 slides, it can drive the slider to slide above the sliding hole 140. The arrangement of the slider and the sliding hole 140 enables the tightening wire 300 to tighten the wire to be tightened at multiple angles.

[0060] In addition, two fixing hooks 150 may be provided on the tensioning frame 100 , and the two fixing hooks 150 can hang the tensioning frame 100 at a certain work station, so as to facilitate the application of the present invention.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A power construction tightening device, characterized in that: include: A tensioning frame (100), wherein two rollers (110) are rotatably arranged on the tensioning frame (100), the two rollers (110) are coaxially arranged and are each provided with a ratchet (1101) at one end away from each other, the ratchet (1101) is provided with an axial groove (120) capable of extending into the interior of the roller (110), and the tensioning frame (100) is provided with a ratchet pawl (1102) corresponding to the ratchet (1101), and the ratchet pawl (1102) can be inserted into a tooth groove of the ratchet (1101); A main shaft (400), the main shaft (400) being slidably disposed in the shaft groove (120), a fastening groove (401) being provided on an outer wall of the main shaft (400), a clamping groove (121) corresponding to and communicating with the fastening groove (401) being provided on an inner wall of the shaft groove (120), a spring (402) being provided in the fastening groove (401), the spring (402) being connected to a clamping block (403), the clamping block (403) being located in the fastening groove (401), one end of which being inserted into the clamping groove (121), so as to realize synchronous rotation of the main shaft (400) and the roller shaft (110); a tightening wire (300), one end of the tightening wire (300) being arranged on the tightening frame (100), and the other end being arranged on the roller shaft (110), a first movable pulley (310) being slidably arranged on the tightening wire (300), a hook (320) being rotatably arranged on the first movable pulley (310), and the hook (320) being used to be connected to the wire to be tightened; and A mounting frame (200), the mounting frame (200) being arranged on both sides of the tightening frame (100) and being capable of covering the ratchet wheel (1101) on the corresponding side, the mounting frame (200) being provided with a transmission mechanism, and the transmission mechanism being capable of driving the main shaft (400) to rotate in a positive direction; The two side surfaces of the clamping block (403) are inclined surfaces, and a compression spring (430) is provided on the main shaft (400). The compression spring (430) always makes the main shaft (400) have a tendency to move in its axial direction. When the main shaft (400) rotates in the forward direction, it can drive the roller (110) to reel in the fastening wire (300).

2. The power construction tightening device according to claim 1, characterized in that: The transmission mechanism comprises a synchronous component and a driving component, wherein the synchronous component comprises a synchronous movable shaft (610) and a planetary gear set (620), wherein the synchronous movable shaft (610) is inserted into the shaft groove (120), the synchronous movable shaft (610) is coaxially arranged with the main shaft (400) and passes through the main shaft (400) and the corresponding mounting frame (200), a fixing plate is arranged on the synchronous movable shaft (610), and the main shaft (400) can push the synchronous movable shaft (610) to move through the fixing plate, and the planetary gear set (620) is arranged on the mounting frame (200), and one end of the main shaft (400) extending out of the shaft groove (120) is matched and connected with the planetary gear set (620); The drive assembly is arranged on the mounting frame (200) and is located above the planetary gear set (620). The drive assembly comprises a switching shaft (710), a driving member (720), a synchronous driving shaft (730) and a synchronous transmission member (740). The switching shaft (710) is arranged on the mounting frame (200). A switching wheel (711) is arranged at one end of the switching shaft (710) located in the mounting frame (200). The driving member (720) is arranged at one end of the switching shaft (710) away from the switching wheel (711). The synchronous drive shaft (730) is arranged on the tightening frame (100), the synchronous drive shaft (730) is coaxially arranged with the switching shaft (710) and is located on a side of the switching shaft (710) away from the driving member (720), driving wheels (731) are arranged at both ends of the synchronous drive shaft (730), a first clamping assembly (800) is arranged between the switching wheel (711) and the driving wheel (731), and the switching wheel (711) can drive the driving wheel (731) to rotate through the first clamping assembly (800); The synchronous transmission member (740) is arranged on the switching shaft (710), the synchronous transmission member (740) is cooperatively connected with the planetary gear set (620), and the synchronous transmission member (740) can drive the main shaft (400) to rotate through the planetary gear set (620); A synchronization plate (611) is provided between the switching shaft (710) and the synchronous moving shaft (610), and the synchronous moving shaft (610) can drive the switching shaft (710) to move through the synchronization plate (611) when the synchronous moving shaft (610) moves in its axial direction.

3. The power construction tightening device according to claim 2, characterized in that: The synchronous transmission member (740) comprises a reel (741), a synchronous rack (742) and a winding wire (743); the reel (741) is sleeved on the switching shaft (710) and mounted on the mounting frame (200); the reel (741) is located on a side of the switching wheel (711) away from the driving wheel (731); a second clamping assembly is provided between the reel (741) and the switching wheel (711); the switching wheel (711) can drive the reel (741) to rotate through the second clamping assembly; One end of the wire (743) is fixed on the reel (741), and the other end is arranged on the wire tensioning frame (100); a fixed pulley (130) corresponding to the reel (741) is arranged on the wire tensioning frame (100); the wire reel (743) passes around the fixed pulley (130), and a second movable pulley is slidably arranged on the wire reel (743); the synchronous rack (742) is slidably arranged on the wire reel (743) through the second movable pulley, and the synchronous rack (742) is cooperatively connected with the planetary gear set (620).

4. The power construction tightening device according to claim 3, characterized in that: The first clamping assembly (800) includes a first driving tooth (810) and a first driving tooth groove (820), wherein the first driving tooth (810) is arranged on a side surface of the switching wheel (711) away from the driving member (720), and the first driving tooth groove (820) is opened on a side surface of the driving wheel (731) facing the switching shaft (710), and the first driving tooth groove (820) is adapted to the first driving tooth (810), and the first driving tooth (810) can be inserted into the corresponding first driving tooth groove (820) to drive the driving wheel (731) to rotate.

5. The power construction tightening device according to claim 4, characterized in that: The second clamping assembly includes a second driving tooth (910) and a second driving tooth groove, wherein the second driving tooth (910) is arranged on a side surface of the switching wheel (711) away from the driving wheel (731), and the second driving tooth groove is opened on a side surface of the winding wheel (741) facing the switching wheel (711), and the second driving tooth groove is adapted to the second driving tooth (910), and the second driving tooth (910) can be inserted into the corresponding second driving tooth groove to drive the winding wheel (741) to rotate.

6. The power construction tightening device according to claim 3, characterized in that: The synchronous rack (742) includes two side rods and a connecting rod connected between the two side rods, and the side rods correspond to the planetary gear set (620).

7. A power construction tightening device according to any one of claims 3 to 6, characterized in that: The main shaft (400) comprises a main body and a gear part, the main body and the gear part are integrally formed, the fastening groove (401) is provided on the side wall of the main body, and the side wall of the gear part is provided with a plurality of tooth grooves evenly distributed around the central axis of the gear part; The planetary gear set (620) comprises a ring gear (621) and a planetary gear (622); the ring gear (621) is rotatably arranged in the mounting frame (200); the inner side wall and the outer side wall of the ring gear (621) are both provided with teeth; the gear portion extends into the ring gear (621) and is coaxially arranged with the ring gear (621); the planetary gear is mounted on the mounting frame (200) via a fixed shaft (220); the planetary gear is located between the inner teeth of the ring gear (621) and the gear portion; the planetary gear (622) meshes with the inner teeth of the ring gear (621) and the tooth grooves of the gear portion; The outer teeth of the gear ring (621) include first teeth and second teeth, the first teeth are located on the side of the gear ring (621) away from the tensioning frame (100), the first teeth can mesh with the synchronous rack (742), and the second teeth can mesh with the driving wheel (731).

8. The power construction tightening device according to claim 7, characterized in that: The driving member (720) is a handle arranged on the switching shaft (710).

9. The power construction tightening device according to claim 8, characterized in that: The tightening wire (300) is arranged at one end of the tightening wire frame (100) and is slidably connected to the tightening wire frame (100).

10. The power construction tightening device according to claim 9, characterized in that: The tensioning frame (100) is provided with two fixing hooks (150), and the two fixing hooks (150) correspond to the two roller shafts (110) respectively.

Images