A power tensioner

Abstract

The present invention discloses a power tensioner, which relates to the technical field of power maintenance auxiliary equipment, including a casing, a winding drum is rotatably installed inside the casing, a hook is installed at the end of the casing and the winding drum, a first driving mechanism is arranged on the side of the winding drum to drive the winding drum to be wound by horizontal shifting, the first driving mechanism includes a driving ratchet fixed to the side of the winding drum, and the driving ratchet is distributed on the outside of the casing; a second driving mechanism is arranged between the winding drum and the first driving mechanism to drive the winding drum to be wound by longitudinal shifting; the second driving mechanism includes a back plate fixed to the side of the casing, the driving ratchet is distributed on the side of the back plate, a rotating plate is arranged on the outside of the back plate, a sliding groove is opened at the end of the back plate, and the end of the rotating plate is slidably distributed inside the sliding groove. The power tensioner disclosed by the present invention has the effects of multiple working angle switching, high functionality and convenience.

Description

Technical Field

[0001] The invention relates to the technical field of power maintenance auxiliary equipment, and in particular to a power tightener. Background Art

[0002] The wire tensioner, also known as the ratchet tensioner, is used to tighten cables during the construction of overhead line laying. When in use, first loosen the wire rope, galvanized iron wire or cloth strip on the wire tensioner and fix it on the crossarm, clamp the cable with a wire clamp, and then pull the special wrench. Due to the anti-reversal effect of the pawl, gradually wind the wire rope, galvanized iron wire or cloth strip around the ratchet drum to tighten the cable, fix the tightened cable on the insulator, then release the pawl first to loosen the wire rope or galvanized iron wire, then release the wire clamp, and finally wind the wire rope or galvanized iron wire around the ratchet drum.

[0003] A Chinese patent with publication (announcement) number: CN112382983A discloses an electric tensioner, including a hook, a load-bearing ring is fixedly installed on the inner wall of the bottom of the hook, a swivel buckle is fixedly installed on the bottom end of the load-bearing ring, a fixing rod is movably connected to the inner wall of the swivel buckle, a steel wire rope is movably connected to the surface of the fixing rod, and a movable wheel is fixedly movably connected to the bottom end of the swivel buckle. When the steel wire rope is relatively loose, the movable block is located above the first gear ring, and the electric telescopic rod is extended to make the fixed block located on the inner wall of the fixing hole. Then the rocker is manually rotated, and the movement of the rocker drives the movable ring to move on the inner wall of the protective shell. During the movement, the movable ring is fixed to the mounting block by a magnetic ring and a spring sheet, and the rotation of the fixed block drives the first gear ring to rotate, and the rotation of the first gear ring drives the fixed gear ring to rotate, and the fixed gear ring rotates to rotate the lifting gear to retract the steel wire rope:

[0004] There are several problems with general power tensioners during use:

[0005] As the issue raised in the above-mentioned comparative document: Due to the influence of environment and geographical location, wire tensioners are often used to perform operations in places with confined spaces. If the wrench of the wire tensioner is too long, the operating space will be limited, making it difficult to perform the wire tightening operation. If the wrench is too short, it will be more laborious.

[0006] Moreover, the wrench of the traditional tensioner can only be turned in one direction. Since the turning direction is limited, it will also restrict the operation of the construction workers, resulting in a decrease in the functionality and ease of use of the existing tensioner. Summary of the invention

[0007] The invention discloses an electric power tensioner, aiming to solve the technical problem that a general electric power tensioner can only be twisted in one direction during use, which is very inconvenient because the twisting direction is limited and due to the influence of the narrow space, it may collide with other places to cause damage to parts. As a result, the functionality and convenience of use of the existing tensioner need to be improved.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A power tensioner, comprising a housing, a winding drum rotatably mounted inside the housing, a side of the winding drum penetrating from the inside of the housing, a hook mounted on each end of the housing and the winding drum, a first driving mechanism for driving the winding drum to wind up by lateral shifting is arranged on the side of the winding drum, the first driving mechanism comprises a driving ratchet fixed to the side of the winding drum, and the driving ratchet is distributed on the outside of the housing;

[0010] A second driving mechanism is provided between the winding drum and the first driving mechanism to drive the winding drum to be wound by longitudinally shifting; the second driving mechanism includes a back plate fixed to the side of the housing, the driving ratchet is distributed on the side of the back plate, a rotating plate is provided on the outer side of the back plate, a sliding groove is opened at the end of the back plate, and the end of the rotating plate is slidably distributed inside the sliding groove;

[0011] The first driving mechanism further comprises a gripping rod rotatably mounted in the middle of the rotating plate, a straight groove is formed inside the gripping rod, a gear rod is slidably distributed inside the straight groove, and the gear rod is meshedly connected with the driving ratchet;

[0012] The second driving mechanism further comprises a one-way ratchet component slidably mounted inside the grip rod, a connecting rod is fixedly connected between the gear rod and the one-way ratchet component, the connecting rod is distributed inside the grip rod, and the one-way ratchet component is meshedly connected with the driving ratchet;

[0013] A threaded rod is rotatably mounted on the middle portion of the gear rod, and the threaded rod is threadedly connected to the inner surface of the straight groove.

[0014] On the basis of the traditional tensioner, the fixed structure of the traditional grip rod is set to consist of two parts: a first driving mechanism and a second driving mechanism. The operation of the first driving mechanism can drive the winding drum to reel in the horizontal direction, and the operation of the second driving mechanism can change the rotation direction of the grip rod, thereby driving the winding of the winding drum in the longitudinal direction. When operating the device, the user can determine the rotation direction of the grip rod according to the use environment, thereby reducing the collision of the device with other obstructions during operation, and improving the functionality and ease of use of the device.

[0015] The ratchet and ratchet structure of the traditional wire tensioner driven by the rotation of the grip rod is set to a structure driven by a driven ratchet and a gear rod, and the rotation of the grip rod is used to drive the gear rod to rotate synchronously, thereby using the gear rod to drive the ratchet and the winding drum to wind the wire. At the same time, the gear rod can automatically achieve the meshing relationship with the driving ratchet by plugging and pulling out the gear rod, thereby achieving locking and unlocking of the winding drum, thereby ensuring the convenience of using the device.

[0016] Furthermore, a one-way ratchet member is provided inside the grip, and the rotating plate is used to rotate around the back plate, thereby changing the angular relationship between the rotating plate and the back plate, causing the one-way ratchet member and the drive ratchet to mesh. At this time, the user can rotate the grip back and forth in the longitudinal direction, thereby utilizing the mutual cooperation of the one-way ratchet member and the drive ratchet to continue to drive the winding reel to be wound, thereby causing the device to have two horizontal and vertical working modes of moving the grip, so that the device can adapt to different environments and improve the functionality and ease of use of the device. At the same time, a connecting rod is used to connect the toothed rod and the one-way ratchet member. When the user moves the toothed rod to release the connection between the toothed rod and the drive ratchet, the connecting rod can simultaneously drive the one-way ratchet member to release the connection with the drive ratchet, thereby realizing horizontal and vertical synchronous locking and unlocking of the winding reel, further improving the convenience of using the device.

[0017] In addition, a threaded rod is provided in the middle of the gear rod, and the gear rod can be driven to move vertically along the inside of the straight groove by rotating the threaded rod, thereby controlling the connection relationship between the gear rod and the driving ratchet and ensuring the stability of the operation of the device.

[0018] In a preferred embodiment, a latch is slidably installed at the end of the back plate, and the latch and the sliding groove are correspondingly distributed in the vertical direction. A slot is vertically opened at the connecting end of the rotating plate and the back plate. The number of the slots is two and they are symmetrically distributed in the horizontal direction. At the same time, the latch is engaged in the inside of one of the slots. A marble is embedded in one end of the rotating plate, and the marble is in extrusion contact with the inner surface of the end of the back plate.

[0019] By providing a sliding latch structure at the end of the back plate, in conjunction with an additional slot at the end of the rotating plate, and by changing the engagement of the latch with the slots at different positions on the end of the rotating plate, the stability of the rotating plate after the position is changed is ensured, thereby further ensuring the integrity of the operation of the device.

[0020] In a preferred embodiment, a limiting ratchet is fixedly sleeved on the side of the winding drum, and the limiting ratchet and the driving ratchet are symmetrically distributed in the horizontal direction. A clamp is rotatably installed on the side of the casing, and the clamp is meshingly connected with the limiting ratchet. An elastic part is fixedly connected to the side of the clamp, and the other end of the elastic part is connected to the outer surface of the casing.

[0021] By additionally arranging a set of limit ratchets and clamps on the side of the winding drum, the stability of the winding drum during unidirectional rotation is ensured, and the user can control the locking relationship of the limit ratchet by manually turning the clamp, thereby ensuring the stability and integrity of the device during operation.

[0022] As can be seen from the above, the electric power tensioner provided by the present invention has the following improvements and advantages compared with the prior art:

[0023] The ratchet and ratchet structure of the traditional wire tensioner is set as a ratchet and gear rod driving structure, and the lateral rotation of the grip rod is used to drive the gear rod to rotate synchronously, so that the gear rod is used to drive the driving ratchet and the winding drum to wind the wire. At the same time, by changing the position relationship of the additional rotating plate and the back plate, the grip rod is controlled to flip synchronously, so that the one-way ratchet member set inside the grip rod and the driving ratchet are engaged. At this time, the user can reciprocate the grip rod in the longitudinal direction to drive the winding drum to wind the wire, so that the handle of the device can perform both longitudinal and lateral working modes, while ensuring the working efficiency of the traditional wire tensioner and improving the functionality and ease of use of the device; and a connecting rod is used to connect the gear rod and the one-way ratchet member. When the user moves the gear rod to release the connection between the gear rod and the driving ratchet, the connecting rod can synchronously drive the one-way ratchet member to move, thereby releasing the connection with the driving ratchet at the same time, so as to achieve synchronous locking and unlocking of the winding drum in the lateral and longitudinal directions, and further improve the convenience of using the device under the premise of ensuring that the working efficiency of the traditional wire tensioner is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a schematic diagram of the overall structure of a power tensioner.

[0025] Figure 2 This is a cross-sectional view of the structure of the second driving mechanism of the electric power tensioner proposed by the present invention.

[0026] Figure 3 This is an exploded view of the overall structure of an electric power tensioner proposed by the present invention.

[0027] Figure 4 A power tensioner proposed by the present invention Figure 3 Exploded view of the structure at point A in the middle.

[0028] Figure 5 The present invention provides a cross-sectional view of the gripping rod structure of a power tensioner.

[0029] Figure 6 This is a schematic diagram of the overall second working state of an electric power tensioner proposed by the present invention.

[0030] Figure 7This is a schematic diagram of the side structure of a grip rod of a power tensioner proposed by the present invention.

[0031] Figure 8 The present invention is a schematic diagram of the structure of a winding drum of a power tensioner.

[0032] Fig. 9 The present invention is a schematic diagram of the one-way ratchet structure of a power line tightener.

[0033] In the figure: 1, casing; 2, winding drum; 3, hook; 4, first driving mechanism; 401, driving ratchet; 402, grip rod; 403, straight groove; 404, gear rod; 405, threaded rod; 5, second driving mechanism; 501, back plate; 502, rotating plate; 503, sliding groove; 504, one-way ratchet member; 505, connecting rod; 506, latch; 507, slot; 508, limit shell; 509, annular groove; 510, marble; 6, limit ratchet; 7, clamp; 8, elastic member. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] The invention discloses a power tensioner which is mainly applied to the scenario when the tensioner is used in a narrow space.

[0036] Reference Figures 1 to 9 A power tensioner includes a housing 1, a winding drum 2 is rotatably mounted inside the housing 1, the side of the winding drum 2 penetrates through the inside of the housing 1, a hook 3 is mounted on the end of the housing 1 and the winding drum 2, a first driving mechanism 4 is arranged on the side of the winding drum 2 for driving the winding drum 2 to wind up by lateral shifting, the first driving mechanism 4 includes a driving ratchet 401 fixed to the side of the winding drum 2, and the driving ratchet 401 is distributed on the outside of the housing 1;

[0037] A second driving mechanism 5 is provided between the winding drum 2 and the first driving mechanism 4 to drive the winding drum 2 to wind by longitudinally shifting; the second driving mechanism 5 includes a back plate 501 fixed to the side of the casing 1, the driving ratchet 401 is distributed on the side of the back plate 501, a rotating plate 502 is provided on the outer side of the back plate 501, a sliding groove 503 is opened at the end of the back plate 501, and the end of the rotating plate 502 is slidably distributed inside the sliding groove 503.

[0038] In this embodiment: before using the device, it is necessary to install additional cable clamps on the two hooks 3, and clamp the two cables by the cable clamps. At this time, the user holds the housing 1 and rotates the first driving mechanism 4, so that the first driving mechanism 4 drives the winding drum 2 to rotate by driving the ratchet 401. During the rotation, the hooks 3 are used to tighten the two clamped cables until the cables are close to the specified distance; Figure 1 For example, when there are additional obstructions in the direction of the two hooks 3, the user needs to manually move the rotating plate 502 so that the rotating plate 502 and the back plate 501 are perpendicular, and at the same time push the rotating plate 502 horizontally so that the end of the rotating plate 502 slides along the inside of the sliding groove 503 until the second driving mechanism 5 and the driving ratchet 401 are engaged. Figure 6 In the state shown, the user manually moves the second driving mechanism 5 back and forth in the longitudinal direction, causing the second driving mechanism 5 to drive the winding drum 2 to rotate. During the rotation, the hook 3 is used to tighten the two clamped cables until the cables are close to a specified distance.

[0039] In the above scheme, in order to ensure that the winding drum 2 can be driven to rotate unidirectionally, so as to reel up, pull and clamp the cable, the specific operation is as follows.

[0040] Reference Figures 1 to 8 The first driving mechanism 4 also includes a handle 402 rotatably mounted in the middle of the rotating plate 502, a straight groove 403 is penetrated inside the handle 402, a gear rod 404 is slidably distributed inside the straight groove 403, and the gear rod 404 is meshed and connected with the driving ratchet 401.

[0041] In this embodiment: before using this device, it is necessary to install additional cable clamps on the two hooks 3, and clamp the two cables with the cable clamps. At this time, the user holds the housing 1 and rotates the grip 402 in one direction. The rotating grip 402 drives the gear rod 404 located inside the straight groove 403 to rotate synchronously. The rotating gear rod 404 drives the winding drum 2 to rotate through the engaged driving ratchet 401. During the rotation, the hook 3 is used to tighten the two clamped cables until the cables are close to the specified distance; wherein, the gear rod 404 A threaded rod 405 is rotatably installed in the middle part, and the threaded rod 405 is threadedly connected to the inner surface of the straight groove 403. After completing the traction of the cable, the user can rotate the threaded rod 405 horizontally, and the threaded rod 405 will use the thread to move horizontally along the inside of the straight groove 403 until the toothed rod 404 at the end of the threaded rod 405 releases the engagement relationship with the driving ratchet 401, and the driving ratchet 401 that loses the engagement restriction can rotate freely in both directions. At this time, the user can pull a hook 3 with one hand to realize the unwinding operation of the winding drum 2.

[0042] In the above scheme, Figure 1For example, when there are additional obstructions in the direction of the two hooks 3, when the user rotates the grip 402, the grip 402 will collide with the obstructions, thereby affecting the normal winding operation of the reel 2. Therefore, it is necessary to be able to change the rotation direction of the grip 402 according to the environment. The specific operations are as follows.

[0043] Reference Figures 1 to 7 , Fig. 9 The second driving mechanism 5 also includes a one-way ratchet member 504 slidably mounted inside the handle 402, a connecting rod 505 is fixedly connected between the gear rod 404 and the one-way ratchet member 504, the connecting rod 505 is distributed inside the handle 402, and the one-way ratchet member 504 is meshedly connected with the driving ratchet 401.

[0044] In this embodiment: Figure 1 For example, when there are additional obstructions in the direction of the two hooks 3, the user needs to manually move the rotating plate 502 so that the rotating plate 502 and the back plate 501 are perpendicular, and at the same time push the rotating plate 502 horizontally so that the end of the rotating plate 502 slides along the inside of the sliding groove 503 until the one-way ratchet member 504 located inside the grip 402 is engaged with the driving ratchet 401. Figure 6 In the state shown, the user uses his hand to move the grip 402 back and forth in the longitudinal direction. When the grip 402 is moved back and forth in the longitudinal direction, the gear structure inside the one-way ratchet 504 will be folded and pushed in one direction, thereby pushing the driving ratchet 401 to rotate in one direction, causing the winding drum 2 to rotate synchronously. During the rotation, the hook 3 is used to tighten the two clamped cables until the cables are close to a specified distance; the specific structure of the one-way ratchet 504 is as follows Fig. 9 As shown; at the same time, when the one-way ratchet member 504 and the driving ratchet 401 are engaged, the user can rotate the threaded rod 405 horizontally, and the threaded rod 405 will use the thread to move horizontally along the inside of the straight groove 403. At the same time, the connecting rod 505 is used to drive the one-way ratchet member 504 to move synchronously in the horizontal direction until the one-way ratchet member 504 releases the engagement relationship with the driving ratchet 401, and the driving ratchet 401 that loses the engagement restriction can rotate freely in both directions. At this time, the user can pull a hook 3 with one hand to realize the unwinding operation of the winding drum 2.

[0045] Among them, it is necessary to supplementally explain that: a limiting shell 508 is horizontally fixed on one side of the handle 402, and the one-way ratchet member 504 is slidably distributed inside the limiting shell 508, and the limiting shell 508 forms a support and shielding for the side of the one-way ratchet member 504, thereby ensuring the structural strength of the one-way ratchet member 504; and an annular groove 509 is provided on the top outer surface of the handle 402, and the inner surface of the rotating plate 502 is rotatably connected to the annular groove 509. When the user moves the handle 402 by hand, the inner surface of the rotating plate 502 will slide relatively along the inside of the annular groove 509, and at the same time, the connection relationship between the rotating plate 502 and the annular groove 509 can ensure the stability of the handle 402.

[0046] In the above scheme, considering that when the end of the rotating plate 502 slides along the inside of the sliding groove 503 and changes its position, the current stability of the rotating plate 502 needs to be guaranteed to prevent the rotating plate 502 from sliding or shaking when the equipment is running. The specific operations are as follows.

[0047] Reference Figure 3 and Figure 4 In a preferred embodiment, a latch 506 is slidably installed at the end of the back plate 501, and the latch 506 and the sliding groove 503 are correspondingly distributed in the vertical direction. A slot 507 is vertically opened at the connecting end of the rotating plate 502 and the back plate 501. The number of the slots 507 is two and they are symmetrically distributed in the horizontal direction. At the same time, the latch 506 is engaged in the inside of a slot 507.

[0048] In this embodiment: Under normal conditions, the angle between the rotating plate 502 and the back plate 501 is as follows: Figure 1 As shown; before the user moves the rotating plate 502, the user needs to pull the pin 506 upwards first, so that the pin 506 moves out from the inside of a slot 507, and then move the rotating plate 502 by hand, so that the rotating plate 502 and the back plate 501 are perpendicular, and at the same time push the rotating plate 502 horizontally, so that the end of the rotating plate 502 slides along the inside of the sliding groove 503. After sliding to the specified position, the user presses down the pin 506 again, so that the pin 506 is inserted into the inside of another slot 507, thereby fixing the rotating plate 502, wherein a marble 510 is embedded in one end of the rotating plate 502, and the marble 510 is in compression contact with the inner surface of the end of the back plate 501. When the rotating plate 502 slides along the inside of the sliding groove 503, the marble 510 located at the end of the rotating plate 502 will be compressed on the inner surface of the end of the back plate 501, thereby generating a damping feeling, which makes it more convenient for the user to locate the position of the rotating plate 502.

[0049] In the above scheme, considering that when the winding drum 2 rotates, in order to prevent the winding drum 2 from releasing the one-way lock due to accidental touch, it is necessary to further ensure the structural stability of the winding drum 2 during operation, and the specific operation is as follows.

[0050] Reference Figures 1 to 3 , Figures 5 and 6 , Figure 8 In a preferred embodiment, a limiting ratchet 6 is fixedly sleeved on the side of the winding drum 2, and the limiting ratchet 6 and the driving ratchet 401 are symmetrically distributed in the horizontal direction. A clamp 7 is rotatably installed on the side of the casing 1, and the clamp 7 is meshed and connected with the limiting ratchet 6.

[0051] In this embodiment, when the user rotates the threaded rod 405 horizontally, the threaded rod 405 will move horizontally along the inside of the straight groove 403 by means of the thread, and at the same time, the connecting rod 505 will drive the one-way ratchet 504 and the toothed rod 404 to move synchronously in the horizontal direction. When the one-way ratchet 504 and the toothed rod 404 release the engagement relationship with the driving ratchet 401, the user still needs to manually move the clamping member 7, causing the clamping member 7 to rotate and lose the meshing relationship with the limit ratchet 6, and the driving ratchet 401 that loses the engagement restriction is released. The wheel 401 can now rotate freely in both directions, and the user can unwind the winding drum 2 by pulling a hook 3 with one hand; under normal circumstances, when the winding drum 2 rotates normally in one direction, accompanied by the rotation of the limiting ratchet 6, the clamping member 7 will intermittently slip along the outer surface of the limiting ratchet 6, thereby not affecting the normal rotation of the winding drum 2; wherein, the side of the clamping member 7 is fixedly connected to an elastic member 8, and the other end of the elastic member 8 is connected to the outer surface of the casing 1, and the elastic member 8 is used to push the clamping member 7 to reset and rotate.

[0052] The driving ratchet 401 and the one-way ratchet 504 have conical surfaces at their edges, ensuring that the two are in a vertical meshing state similar to a bevel gear transmission (such as Figure 6 As shown), to ensure the transmission effect in the vertical meshing state.

[0053] Specifically, the gear rod 404 and the one-way ratchet wheel 504 both rotate in one direction, so that they can drive the driving ratchet wheel 401 to rotate, and with the reverse rotation of the handle 402, the gear rod 404 and the one-way ratchet wheel 504 cannot drive the driving ratchet wheel 401 to rotate.

[0054] Working principle: Before using the device, you need to install additional cable clamps on the two hooks 3, and clamp the two cables with the cable clamps. At this time, the user holds the housing 1 and rotates the grip 402 in one direction. The rotating grip 402 drives the gear rod 404 located inside the straight groove 403 to rotate synchronously. The rotating gear rod 404 drives the winding drum 2 to rotate through the engaged driving ratchet 401. During the rotation, the hook 3 is used to tighten the two clamped cables until the cables are close to the specified distance; Figure 1For example, when there are additional obstructions in the direction of the two hooks 3, the user needs to manually move the rotating plate 502 so that the rotating plate 502 and the back plate 501 are perpendicular, and at the same time push the rotating plate 502 horizontally so that the end of the rotating plate 502 slides along the inside of the sliding groove 503 until the one-way ratchet member 504 located inside the grip 402 is engaged with the driving ratchet 401. Figure 6 When the grip 402 is reciprocated longitudinally by hand, the gear structure inside the one-way ratchet 504 will be folded and pushed in one direction, thereby pushing the driving ratchet 401 to rotate in one direction, causing the winding drum 2 to rotate synchronously. During the rotation, the two clamped cables are tightened by the hook 3 until the cables are close to the specified distance. After the traction of the cables is completed under normal conditions, the user can rotate the threaded rod 405 horizontally, and the threaded rod 405 will move horizontally along the inside of the straight groove 403 by means of the thread, until the toothed rod 404 at the end of the threaded rod 405 releases the engagement relationship with the driving ratchet 401. At this time, the user moves the clamping member 7 by hand, causing the clamping member 7 to rotate and lose the meshing relationship with the limit ratchet 6, and the driving ratchet 401 that loses the engagement restriction can rotate freely in both directions. At this time, the user can unwind the winding drum 2 by pulling a hook 3 with one hand. Figure 6 After completing the pulling of the cable in the shown state, the user can still rotate the threaded rod 405 horizontally, and the threaded rod 405 will use the thread to move horizontally along the inside of the straight groove 403. While moving, the connecting rod 505 will drive the one-way ratchet member 504 to move synchronously in the horizontal direction until the one-way ratchet member 504 releases the engagement relationship with the driving ratchet 401. At this time, the user manually moves the clamping member 7, causing the clamping member 7 to rotate and lose the engagement relationship with the limit ratchet 6, and the driving ratchet 401 that loses the engagement restriction can rotate freely in both directions. At this time, the user pulls a hook 3 with one hand to realize the unwinding operation of the winding drum 2.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric power tensioner, comprising a housing (1), a winding drum (2) rotatably mounted inside the housing (1), a side surface of the winding drum (2) extending through the interior of the housing (1), and a hook (3) being mounted at the end of each of the housing (1) and the winding drum (2), characterized in that: A first driving mechanism (4) is provided on the side of the winding drum (2) for driving the winding drum (2) to wind by means of a lateral movement, the first driving mechanism (4) comprising a driving ratchet (401) fixed to the side of the winding drum (2), the driving ratchet (401) being distributed on the outside of the housing (1); A second driving mechanism (5) is provided between the winding drum (2) and the first driving mechanism (4) for driving the winding drum (2) to be wound by longitudinally shifting; the second driving mechanism (5) comprises a back plate (501) fixed to a side surface of the housing (1); the driving ratchet (401) is distributed on a side surface of the back plate (501); a rotating plate (502) is provided on the outer side of the back plate (501); a sliding groove (503) is provided at an end of the back plate (501); and an end of the rotating plate (502) is slidably distributed inside the sliding groove (503); The first driving mechanism (4) further comprises a gripping rod (402) rotatably mounted on the middle part of the rotating plate (502), a straight groove (403) extending through the gripping rod (402), a gear rod (404) slidingly distributed inside the straight groove (403), and the gear rod (404) meshingly connected with the driving ratchet (401); The second driving mechanism (5) further comprises a one-way ratchet wheel (504) slidably mounted inside the gripping rod (402); a connecting rod (505) is fixedly connected between the toothed rod (404) and the one-way ratchet wheel (504); the connecting rod (505) is distributed inside the gripping rod (402); and the one-way ratchet wheel (504) is meshingly connected to the driving ratchet wheel (401); A threaded rod (405) is rotatably mounted on the middle portion of the gear rod (404), and the threaded rod (405) is threadedly connected to the inner surface of the straight groove (403).

2. The electric power tensioner according to claim 1, characterized in that: A latch (506) is slidably mounted on the end of the back plate (501), the latch (506) and the sliding groove (503) are correspondingly distributed in the vertical direction, a slot (507) is vertically opened at the connection end of the rotating plate (502) and the back plate (501), the number of the slots (507) is two and they are symmetrically distributed in the horizontal direction, and the latch (506) is engaged in the interior of one of the slots (507).

3. The electric power tensioner according to claim 2, characterized in that: A limiting shell (508) is horizontally fixed on one side of the grip rod (402), and the one-way ratchet component (504) is slidably distributed inside the limiting shell (508).

4. The electric power tensioner according to claim 3, characterized in that: An annular groove (509) is provided on the top outer surface of the grip rod (402), and the inner surface of the rotating plate (502) is rotatably connected to the annular groove (509).

5. The electric power tensioner according to claim 4, characterized in that: A limit ratchet (6) is sleeved and fixed on the side of the winding drum (2); the limit ratchet (6) and the driving ratchet (401) are symmetrically distributed in the horizontal direction; a clamp (7) is rotatably mounted on the side of the housing (1); the clamp (7) is meshedly connected to the limit ratchet (6).

6. The electric power tensioner according to claim 5, characterized in that: An elastic member (8) is fixedly connected to the side surface of the clamping member (7), and the other end of the elastic member (8) is connected to the outer surface of the housing (1).

7. The electric power tensioner according to claim 6, characterized in that: A marble (510) is embedded in one end of the rotating plate (502), and the marble (510) is in compression contact with the inner surface of the end of the back plate (501).

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