Portable traction device for power line protective net

Abstract

The utility model discloses a portable traction device for an electric power line protective net, which comprises an electric wrench, a shell, a main shaft rotationally connected in the shell, a worm gear and a rope wheel which are fixed on the main shaft, and a worm rotationally connected in the shell and perpendicular to the main shaft, one end of the worm extends out of the shell and is provided with a rotating head, and the rotating head is matched with the electric wrench. The operation mode that the rechargeable impact wrench is inserted into the worm shaft head and the hexagonal head is exposed is adopted, the manual operation mode is omitted, and the labor intensity is greatly relieved.

Description

Technical Field

[0001] The utility model relates to a portable traction device for an electric power line protection net. Background Technique

[0002] At present, when the overhead ground wire of a transmission line is laid, it often needs to cross highways, railways, national roads, provincial roads, etc. According to safety regulations and construction requirements, a power protection net must be preset above the safe height above the crossing section to ensure safety. Since the rectangular power protection net has a large area and a heavy self-weight, it needs to be simultaneously tractioned and lifted to the safe height at four points. Therefore, there is a large research and development space for the traction force, the stroke of the traction device, the self-weight of the traction device, and the operation mode during the traction process.

[0003] The existing construction equipment conditions are: a hand winch or a "special tightening device for Dyneema rope" (patent number: 201822167683.6). For the first type of hand winch, because the working stroke is 6 meters, it cannot meet the overall lifting stroke, and the lifting wire speed is extremely slow due to manual hand-operated operation. For the second type of special Dyneema tightening device, although the lifting stroke meets the requirements, the lifting wire speed is the same as that of the hand winch (wire speed: 0.1 m / min) due to manual hand-operated operation, and the lifting wire speed is low. In addition, the self-weight is 24 kg, and it is time-consuming and laborious to carry and install. Summary of the Invention

[0004] The purpose of the utility model is to provide a portable traction device for an electric power line protection net, in which the worm can cooperate with an electric hand winch to realize electric lifting, greatly reducing the labor intensity.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a portable traction device for an electric power line protection net, which includes an electric wrench, a housing, a main shaft rotatably connected in the housing, a worm gear and a rope wheel fixed on the main shaft, and a worm rotatably connected in the housing and perpendicular to the main shaft, the worm meshes with the worm gear, one end of the worm extends out of the housing, and a rotating head is provided on this end, and the rotating head matches the electric wrench.

[0006] The rotating head is a polygonal prism, and the output end of the electric wrench has a polygonal groove matching the rotating head.

[0007] The housing includes a front housing that penetrates through the front and rear, a rear housing that is fixedly connected to the rear end of the front housing and penetrates through the front and rear, and a rear cover that is disposed on the rear end of the rear housing and fixedly connected to the rear housing. The main shaft is rotatably connected to the front housing through a first shaft sleeve provided on the circumferential surface of its middle section and a first bearing provided on its rear end, and is rotatably connected to the rear cover through a second bearing provided on its rear end. The front end of the rope pulley is sleeved on the main shaft, the middle section and the rear end of the rope pulley are sleeved on the front housing, the rope pulley is rotatably connected to the front end of the front housing through a third bearing, and the rope pulley is rotatably connected to the rear end of the front housing through a fourth bearing.

[0008] The device further includes a front cover that is disposed on the front end of the rope pulley and sleeved on the front end of the main shaft.

[0009] A first skeleton oil seal is provided between the main shaft and the front housing.

[0010] The worm is rotatably connected in the rear housing through a second shaft sleeve mounted on its upper end and a fifth bearing on its lower end.

[0011] An upper cover is sleeved on the upper end of the worm, and the upper cover is fixedly installed on the rear housing; a lower cover is sleeved on the lower end of the worm, and the lower cover is fixedly installed on the rear housing. The fifth bearing is provided on the lower cover, and the second shaft sleeve is provided on the upper cover.

[0012] A first guide rod is provided on the right end of the housing. The traction rope on the rope pulley passes through the first guide rod and then winds around the rope pulley. One end of the first guide rod forms a spiral guide hole.

[0013] A first connecting plate is provided on the housing, and a first ring buckle hole for fixedly connecting to a ground anchor is provided on the first connecting plate.

[0014] A second connecting plate is provided on the housing. A second ring buckle hole for fixedly connecting to a ground anchor and a second guide rod are provided on the second connecting plate. One end of the second guide rod is formed with a semi-circular guide groove. The traction rope passes through the guide groove of the second guide rod after winding around the rope pulley.

[0015] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art: By adopting the operation mode of inserting a rechargeable impact wrench into the exposed hexagonal head of the worm shaft head, the hand-operated operation mode is eliminated, and the labor intensity is greatly reduced. Description of the Drawings

[0016] Figure 1 It is a perspective view of the present utility model;

[0017] Figure 2It is the front view of the utility model;

[0018] Figure 3 for Figure 2 AA section view;

[0019] Figure 4 for Figure 2 BB cross-sectional view. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the embodiments shown in the accompanying drawings.

[0021] See attached Figures 1-4 As shown, the portable traction device for the power line protection net includes an electric wrench, a shell 1, a main shaft 2 rotatably connected to the shell 1, a worm wheel 3 and a rope pulley 5 fixed on the main shaft 2, a worm 4 rotatably connected to the shell 1 and arranged perpendicularly to the main shaft 2, and a rope splitter 0 arranged on the shell 1 and located on one side of the rope pulley 5, the worm 4 is meshed with the worm wheel 3, one end of the worm 4 extends out of the shell 1, and a rotating head 41 is provided on the end, and the rotating head 41 matches the electric wrench.

[0022] Specifically, the rotating head 41 is a polygonal prism. In the present embodiment, it is a hexagonal prism. The output end of the electric wrench has a hexagonal groove matching the rotating head 41. The electric wrench is a commercially available electric wrench equipped with a hexagonal conversion head. Since it is a prior art, it will not be described in detail here.

[0023] The housing 1 includes a front end housing 11 that passes through from front to back, a rear end housing 12 that is fixedly connected to the rear end of the front end housing 11 and passes through from front to back, a rear cover 13 that is covered on the rear end of the rear end housing 12 and fixedly connected to the rear end housing 13, and a front cover 14 that is covered on the front end of the rope wheel 5 and sleeved on the front end of the main shaft 2. The front cover 14, the rope wheel 5, the main shaft 2, and the worm wheel 3 move synchronously. The main shaft 2 is rotatably connected to the front end housing 11 through a first sleeve 71 provided on the circumference of the middle section and a first bearing 61 provided on the rear end thereof, and is rotatably connected to the rear cover 13 through a second bearing 62 provided on the rear end thereof. A spacer ring 9 is sleeved on the main shaft 2 between the second bearing 62 and the worm wheel 3. The front end of the rope wheel 5 is sleeved on the main shaft 2, and the middle section and rear end of the rope wheel 5 are sleeved on the front end housing 11. The rope wheel 5 is rotatably connected to the front end of the front end housing 11 through a third bearing 63, and the rope wheel 5 is rotatably connected to the rear end of the front end housing 11 through a fourth bearing 64.

[0024] A first skeleton seal ring 81 is provided between the main shaft 2 and the front-end housing 11. The worm 4 is rotatably connected within the rear-end housing 12 through a second shaft sleeve 72 mounted on its upper end and a fifth bearing 65 on its lower end. An upper cover 15 is sleeved on the upper end of the worm 4. A second skeleton seal ring 82 sleeved on the worm is provided within the upper cover 15, and the upper cover 15 is fixedly mounted on the rear-end housing 12; a lower cover 16 is sleeved on the lower end of the worm 4, the lower cover 16 is fixedly mounted on the rear-end housing 12, the fifth bearing 65 is provided on the lower cover 16, the second shaft sleeve 72 is provided on the upper cover 15, and the second skeleton seal ring 82 is located above the second shaft sleeve 72. A first guide rod 17 is provided on the right end of the housing 1. The first guide rod 17 is telescopically mounted on a mounting block 111 on the housing 1. An adjusting bolt 112 is threadedly connected to the mounting block 111. The adjusting bolt 112 can press on the first guide rod 17. A positioning plane for easy positioning is formed on the circumferential surface of the first guide rod 17. When the adjusting bolt 112 presses on the positioning plane, the position of the first guide rod 17 is fixed. When the adjusting bolt 112 is loosened and leaves the positioning plane, the position of the first guide rod 17 is adjustable. The towing rope on the rope pulley 5 passes through the first guide rod 17 and then winds around the rope pulley 5. One end of the first guide rod 17 forms a spiral guide hole 171. A first connecting plate 10 is provided on the left end of the housing. A first ring buckle hole 101 for fixedly connecting with a ground anchor is provided on the first connecting plate 10. A second connecting plate 19 is provided on the left end of the housing. A second ring buckle hole 191 for fixedly connecting with a ground anchor and a second guide rod 18 are provided on the second connecting plate 19. One end of the second guide rod 18 is formed with a semicircular guide groove 181. The towing rope bypasses the rope pulley 5 and then passes through the guide groove 181 of the second guide rod 18.

[0025] Principle of this application: The worm gear 3 and the worm 4 are used as a speed reduction and force increasing transmission method. The output torque is matched by the spline of the main shaft 2 of the worm gear 3 and the spline groove on the front cover 14. The towing rope extends out through the guide hole 171 of the first guide rod 17 and then winds around the rope pulley 5 for 6 turns. The tail rope is led out and tightened by manual pulling. The two holes on the first connecting plate 10 and the second connecting plate 19 are for the connection of the steel wire rope loop buckle and are used for fixedly connecting with the ground anchor to bear the overall tensile load.

[0026] Operation method: Insert a rechargeable impact wrench socket into the exposed hexagonal prism at the shaft head of the worm 4, start the electric impact wrench, and at the same time, another person tightens the tail-out rope. At this time, the rope pulley 5 rotates to start towing until the electric protection net is towed to the working safety height.

[0027] This device is changed from manual operation to operation with a rechargeable impact wrench, reducing the labor intensity; the towing speed is increased from 0.1 m / min of the traditional hand-operated towing rope to 0.16 m / min; the self-weight is reduced from 24 kg to 12 kg, with a reduction rate of 50%.

[0028] The above embodiments are only used to illustrate the technical concept and features of the present utility model. The purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly, and it should not be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit and essence of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A portable traction device for a power line protection net, comprising an electric wrench, a housing, a main shaft rotatably connected to the housing, a worm wheel and a rope wheel fixed to the main shaft, a worm rotatably connected to the housing and arranged perpendicular to the main shaft, the worm meshing with the worm wheel, characterized in that: One end of the worm extends out of the housing, and a rotating head is provided on the end, and the rotating head matches the electric wrench.

2. The portable traction device for the power line protection net according to claim 1 is characterized in that: The rotating head is a polygonal prism, and the output end of the electric wrench has a polygonal groove matching the rotating head.

3. The portable traction device for power line protection net according to claim 1 is characterized in that: The housing comprises a front end housing that passes through from front to back, a rear end housing that is fixedly connected to the rear end portion of the front end housing and passes through from front to back, and a rear cover that is provided on the rear end portion of the rear end housing and fixedly connected to the rear end housing. The main shaft is rotatably connected to the front end housing through a first sleeve provided on the circumferential surface of the middle section and a first bearing provided on the rear end portion thereof, and is rotatably connected to the rear cover through a second bearing provided on the rear end portion thereof. The front end portion of the rope pulley is sleeved on the main shaft, and the middle section and rear end portion of the rope pulley are sleeved on the front end housing. The rope pulley is rotatably connected to the front end portion of the front end housing through a third bearing, and the rope pulley is rotatably connected to the rear end portion of the front end housing through a fourth bearing.

4. The portable traction device for the power line protection net according to claim 3 is characterized by: The device also includes a front cover which is covered on the front end of the rope wheel and sleeved on the front end of the main shaft.

5. The portable traction device for power line protection net according to claim 3 is characterized in that: A first skeleton sealing ring is provided between the main shaft and the front end housing.

6. The portable traction device for the power line protection net according to claim 3 is characterized by: The worm is rotatably connected in the rear end housing through a second sleeve mounted on its upper end and a fifth bearing mounted on its lower end.

7. The portable traction device for the power line protection net according to claim 6 is characterized by: An upper cover is sleeved on the upper end of the worm, and the upper cover is fixedly mounted on the rear end housing; a lower cover is sleeved on the lower end of the worm, and the lower cover is fixedly mounted on the rear end housing, the fifth bearing is arranged on the lower cover, and the second shaft sleeve is arranged on the upper cover.

8. The portable traction device for power line protection net according to claim 1 is characterized by: A first guide rod is arranged on the right end of the shell, and the traction rope on the rope wheel passes through the first guide rod and is wound on the rope wheel, and one end of the first guide rod forms a spiral guide hole.

9. The portable traction device for power line protection net according to claim 1, characterized in that: The shell is provided with a first connecting plate, and the first connecting plate is provided with a first buckle hole for fixed connection with a ground anchor.

10. The portable traction device for the power line protection net according to claim 8, characterized in that: The shell is provided with a second connecting plate, the second connecting plate is provided with a second buckle hole for fixed connection with the ground anchor and a second guide rod, one end of the second guide rod is completed with a semicircular guide groove, and the traction rope passes through the guide groove of the second guide rod after passing around the rope wheel.

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