Protective device for hoisting on pole

Abstract

The invention relates to the technical field of power supply pole equipment hoisting protection structures, in particular to a pole hoisting protection device which is provided with a shell, a cable outlet is formed in the upper end of the shell, and a cable inlet is formed in the lower end of the shell. The protection assembly comprises an upper groove wheel, a lower groove wheel, a protection gear ring, a clamping tooth disc, clamping teeth and an inertia blocking disc, inner teeth of the protection gear ring are ratchets inclining towards one side, the clamping tooth disc and the lower groove wheel rotate in the same direction, the clamping tooth disc drives the clamping teeth to rotate along the ratchets of the protection gear and cross the ratchets, and the inertia blocking disc is arranged on the protection gear ring. And the lower grooved wheel stops rotating under the action of the protection gear and the latch when subjected to reverse rotation force. The lifting appliance has the advantages of simple structure, good protection effect, high safety performance, capability of assisting in lifting or releasing and the like.

Description

Technical Field

[0001] The invention relates to the technical field of lifting protection structures for power supply pole equipment, in particular to a pole lifting protection device with simple structure, good protection effect, high safety performance and the ability to assist lifting or releasing. Background Art

[0002] As is known to all, during the installation of cable poles, it is necessary to lift the cables, insulator strings and other equipment that need to be installed on the upper end of the cable poles toward the top of the cable poles. At present, the existing lifting method generally adopts a ladder truck, but the lifting height of the ladder truck is limited, and it must rely on the cable pole. In order to ensure the lifting height, a fixed pulley is installed on the top of the cable pole, and the cable of the winch passes through the fixed pulley to lift the heavy object upward and release it downward. However, once the winch has a problem or the rope breaks, it will cause danger. In addition, the winch will be worn out after long-term use. If the wear is serious, it will also cause safety problems such as the rope slipping and the heavy object falling off. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned deficiencies in the prior art and to provide a pole-mounted lifting protection device which has a simple structure, good protection effect, high safety performance and can assist in lifting or releasing.

[0004] The technical solution adopted by the present invention to solve its technical problem is: The cam is provided with a plurality of teeth, and the plurality of teeth are connected to each other with a plurality of teeth, and the plurality of teeth are connected to each other with a plurality of teeth.

[0005] The protective gear ring, the latching tooth plate, the latching teeth, and the inertia baffle plate described in the present invention are placed in a limit box, and the limit box includes a left cover plate and a right cover plate. The left cover plate is rotatably connected to the wheel shaft of the lower groove wheel via a groove wheel bearing, and the latching tooth plate is arranged on the right side of the left cover plate. The outer end of the protective gear ring is fixedly connected to the left cover plate and the right cover plate via a limit bolt, and an inertia baffle plate is sleeved on the wheel shaft of the lower groove wheel between the protective gear ring and the right cover plate. The inertia baffle plate is rotatably connected to the inertia baffle plate via an inertia bearing, and the inertia bearing is clamped on the inertia baffle plate via a retaining spring.

[0006] The shell described in the present invention includes a left end cover, a right end cover, and a protective cover. The left end cover and the right end cover are rotatably connected to the left and right wheel axles of the upper groove wheel and the left wheel axle of the lower wheel groove through groove wheel bearings respectively. The right end cover is inserted between the protective gear ring and the right cover plate, and the left cover plate, the right cover plate and the protective gear ring are fixed to the shell through limiting bolts. The protective cover is connected to the left end cover and the right end cover through connecting bolts.

[0007] The latching tooth described in the present invention is configured to be F-shaped, and a ratchet head is provided at the end of the vertical wall of the F-shaped latching tooth, and the ratchet head is meshed with the inner ratchet of the protective gear ring in the same direction. The two lateral walls of the F-shaped latching tooth are the counterweight parts of the latching tooth, and a protruding stopper is provided on the latching tooth disk below the lateral wall of the F-shaped latching tooth, and the protruding stopper contacts with the vertical wall of the F-shaped latching tooth, and the F-shaped latching tooth is restricted by the protruding stopper to swing only toward one side.

[0008] The left wheel shafts of the upper sheave wheel and the lower sheave wheel of the present invention are respectively fixedly connected with sprocket wheels, and the sprocket wheels of the upper sheave wheel and the lower sheave wheel are sleeved with chains.

[0009] The right end of the axle of the upper groove wheel described in the present invention is connected to the half-axle box, and the bottom of the half-axle box is symmetrically connected to the load-bearing column, and an arc-shaped buffer pad is sleeved on the load-bearing column. The middle part of the arc-shaped buffer pad is fixedly connected to the load-bearing column, and the arc-shaped buffer pads sleeved on the two load-bearing columns are arranged in a symmetrical manner. The motor shaft is inserted between the two arc-shaped buffer pads, and a torque arm is provided at the position where the motor shaft extends between the two arc-shaped buffer pads. The torque arm is provided with two and is symmetrically connected to the side of the motor shaft. The motor shaft is inserted into the output end of the motor and is controlled to rotate through the output end of the motor.

[0010] The half-axle box of the present invention is covered with a connecting cover on the outside, the right end of the connecting cover is fixedly connected to the outer shell, and the left end of the connecting cover is detachably connected to the motor shell of the motor through the shell bolts.

[0011] The right end of the wheel shaft of the lower groove wheel of the present invention extends out of the end of the inertia baffle plate and is connected to a spring, and the spring causes the inertia baffle plate to contact the side surface of the latching teeth connected to the latching teeth plate.

[0012] The present invention has the advantages of simple structure, good protection effect, high safety performance, auxiliary lifting or releasing, etc. due to the adoption of the above structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 yes Figure 1 Schematic diagram of the perspective structure hidden on the front side of the lieutenant general's shield.

[0015] Figure 3 yes Figure 2 sectional view of .

[0016] Figure 4 This is a diagram showing the connection relationship between the protective gear ring, the toothed plate, and the toothed side surfaces.

[0017] Figure 5 It is a side connection relationship diagram of the half-axle box, arc-shaped buffer pad, load-bearing column, motor shaft, and torque arm.

[0018] Figure numerals: cable outlet 1, cable inlet 2, upper groove wheel 3, lower groove wheel 4, protective gear ring 5, toothed plate 6, tooth 7, inertia baffle 8, wheel groove 9, inner tooth 10, left cover plate 11, right cover plate 12, limit bolt 13, inertia bearing 14, groove wheel bearing 15, left end cover 16, right end cover 17, guard 18, ratchet head 19, protruding stopper 20, sprocket 21, half-axle box 22, force column 23, arc buffer pad 2, motor shaft 25, torque arm 26, motor 27, connecting cover 28, casing bolt 29, connecting bolt 30. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings: As shown in the accompanying drawings, a pole lifting protection device is provided with a shell, the upper end of the shell is provided with a cable outlet 1, and the lower end of the shell is provided with a cable inlet 2, characterized in that a protection component is provided inside the shell, and the protection component includes an upper groove wheel 3, a lower groove wheel 4, a protective gear ring 5, a clamping tooth plate 6, a clamping tooth 7, and an inertia baffle 8. The left and right ends of the upper groove wheel 3 and the lower groove wheel 4 are respectively rotatably connected to the shell, and the upper groove wheel 3 and the lower groove wheel 4 are provided with wheel grooves 9 side by side. The wheel shaft of the lower groove wheel 4 passes through the clamping tooth plate 6, the protective gear ring 5 in sequence, and then connects with the inertia baffle 8. The retaining plate 8 is rotatably connected, the protective gear ring 5 is fixed on the outer shell, the latch tooth plate 6 is clamped on the axle of the lower groove wheel 4, and a latch tooth 7 is provided on the latch tooth plate 6. One end of the latch tooth 7 is rotatably connected to the latch tooth plate 6, and the other end of the latch tooth 7 is engaged with the inner tooth of the protective gear ring 5. The inner tooth 10 of the protective gear ring 5 is a ratchet inclined to one side. The latch tooth plate 6 rotates in the same direction as the lower groove wheel 4, and the latch tooth plate 6 drives the latch tooth 7 to rotate along the ratchet teeth of the protective gear and over the ratchet teeth. When the lower groove wheel 4 is subjected to the force of reverse rotation, it stops rotating under the action of the protective gear and the latch tooth 7.

[0020] Furthermore, the protective gear ring 5, the latching tooth plate 6, the latching teeth 7, and the inertia baffle plate 8 are placed in a limit box, and the limit box includes a left cover plate 11 and a right cover plate 12. The left cover plate 11 is rotatably connected to the axle of the lower groove wheel 4 via a groove wheel bearing 15. The latching tooth plate 6 is arranged on the right side of the left cover plate 11. The outer end of the protective gear ring 5 is fixedly connected to the left cover plate 11 and the right cover plate 12 via a limiting bolt 13. An inertia baffle plate 8 is sleeved on the axle of the lower groove wheel 4 between the protective gear ring 5 and the right cover plate 12. The inertia baffle plate 8 is rotatably connected to the inertia baffle plate 8 via an inertia bearing 14, and the inertia bearing 14 is clamped on the inertia baffle plate 8 via a retaining spring.

[0021] Furthermore, the outer shell includes a left end cover 16, a right end cover 17, and a shield 18. The left end cover 16 and the right end cover 17 are rotatably connected to the left and right wheel axles of the upper groove wheel 3 and the left wheel axle of the lower wheel groove 9 through the groove wheel bearing 15 respectively. The right end cover 17 is inserted between the protective gear ring 5 and the right cover plate 12, and the left cover plate 11, the right cover plate 12 and the protective gear ring 5 are fixed to the outer shell through the limiting bolts 13. The shield 18 is connected to the left end cover 16 and the right end cover 17 through the connecting bolts 30.

[0022] Furthermore, the latch tooth 7 is configured to be F-shaped, and a ratchet head 19 is provided at the end of the vertical wall of the F-shaped latch tooth 7. The ratchet head 19 meshes with the inner ratchet of the protective gear ring 5 in the same direction. The two lateral walls of the F-shaped latch tooth 7 are counterweight parts of the latch tooth 7. A protruding stopper 20 is provided on the latch tooth plate 6 below the lateral wall of the F-shaped latch tooth 7. The protruding stopper 20 contacts the vertical wall of the F-shaped latch tooth 7, and the F-shaped latch tooth 7 is limited by the protruding stopper 20 to swing only toward one side.

[0023] Furthermore, sprockets 21 are fixedly connected to the left wheel axles of the upper sheave 3 and the lower sheave 4, and chains are sleeved on the sprockets 21 of the upper sheave 3 and the lower sheave 4.

[0024] Furthermore, the right end of the axle of the upper groove wheel 3 is connected to the half-axle box 22, and the bottom of the half-axle box 22 is symmetrically connected to the load-bearing column 23. The load-bearing column 23 is covered with an arc-shaped buffer pad 24, and the middle part of the arc-shaped buffer pad 24 is fixedly connected to the load-bearing column 23. The arc-shaped buffer pads 24 covered on the two load-bearing columns 23 are arranged in a symmetrical manner. The motor shaft 25 is inserted between the two arc-shaped buffer pads 24. The position where the motor shaft 25 extends between the two arc-shaped buffer pads 24 is provided with a torque arm 26. The torque arm 26 is provided with two and is symmetrically connected to the side of the motor shaft 25. The motor shaft 25 is inserted into the output end of the motor and is controlled to rotate through the output end of the motor 27.

[0025] Furthermore, the outer portion of the half-axle box 22 is covered with a connecting cover 28 , the right end of the connecting cover 28 is fixedly connected to the outer shell, and the left end of the connecting cover 28 is detachably connected to the motor shell of the motor 27 via a shell bolt 29 .

[0026] Furthermore, the right end of the axle of the lower groove wheel 4 extends out of the end of the inertia baffle plate 8 and is connected to a spring, and the spring pushes the inertia baffle plate 8 against the side of the latching tooth 7 connected to the latching tooth plate 6.

[0027] When the present invention is in use, the motor 27 is removed and the cable is passed through the cable inlet 2 into the housing, and is wound around the upper groove wheel 3 and the lower groove wheel 4 in sequence, and then passed out through the cable outlet 1. When working, due to the pulling action of the winch on the cable, the upper groove wheel 3 and the lower groove wheel 4 of the cable rotate under the pulling of the cable, and the tooth plate 6 of the lower groove wheel 4 rotates together with the lower groove wheel 4, and the tooth 7 on the tooth plate 6 rotates over the ratchet on the protective gear ring 5. When problems such as rope slippage or emergency stop occur, the lower groove wheel 4 generates a reverse rotation force, and at this time the protective gear ring 5 drives the tooth 7 to generate a reverse rotation force. Since the tooth 7 and the protective gear ring 5 can only rotate in one direction, due to the ratchet head 19 of the tooth 7 and the ratchet clamp of the protective gear ring 5 Tighten, and then organize the lower groove wheel 4 to rotate in the opposite direction, thereby playing a protective role. When the motor 27 is needed to actively drive the upper groove wheel 3 to rotate, the motor 27 shell of the motor 27 is connected to the connecting cover 28 through the shell bolts 29, and the motor shaft 25 is inserted into the output end of the motor 27. By starting the motor 27, the motor 27 drives the motor shaft 25 to rotate, and the torque arm 26 on the motor shaft 25 moves the arc buffer pad 24 and the force column 23. The force column 23 drives the half-axle box 22 to rotate, and then drives the upper groove wheel 3 to rotate. The upper groove wheel 3 drives the lower groove wheel 4 to rotate synchronously through the chain to realize the upward extension or downward pull of the cable. Due to the adoption of the above structure, the present invention has the advantages of simple structure, good protection effect, high safety performance, and auxiliary lifting or release.

Claims

1. A pole lifting protection device, comprising a housing, a cable outlet at the upper end of the housing, and a cable inlet at the lower end of the housing, characterized in that A protection component is provided inside the shell, and the protection component includes an upper groove wheel, a lower groove wheel, a protection gear ring, a toothed plate, a locking tooth, and an inertia baffle. The left and right ends of the upper groove wheel and the lower groove wheel are respectively rotatably connected to the shell, and wheel grooves are arranged side by side on the upper groove wheel and the lower groove wheel. The wheel axle of the lower groove wheel passes through the locking toothed plate and the protection gear ring in sequence and is rotatably connected to the inertia baffle. The protection gear ring is fixed on the shell, and the toothed plate is clamped on the wheel axle of the lower groove wheel. The locking toothed plate is provided with locking teeth, one end of the locking tooth is rotatably connected to the locking toothed plate, and the other end of the locking tooth is meshed with the inner teeth of the protection gear ring. The inner teeth of the protection gear ring are ratchet teeth inclined to one side, and the toothed plate rotates in the same direction as the lower groove wheel, and the toothed plate drives the locking tooth to rotate along the ratchet teeth of the protection gear and over the ratchet teeth. When the lower groove wheel is subjected to the force of reverse rotation, it stops rotating under the action of the protection gear and the locking tooth.

2. A pole lifting protection device according to claim 1, characterized in that The protective gear ring, the latching tooth plate, the latching teeth, and the inertia baffle are placed in a limit box. The limit box includes a left cover plate and a right cover plate. The left cover plate is rotatably connected to the wheel axle of the lower groove wheel via a groove wheel bearing. The latching tooth plate is arranged on the right side of the left cover plate. The outer end of the protective gear ring is fixedly connected to the left cover plate and the right cover plate via a limit bolt. An inertia baffle is sleeved on the wheel axle of the lower groove wheel between the protective gear ring and the right cover plate. The inertia baffle is rotatably connected to the inertia baffle via an inertia bearing, and the inertia bearing is clamped on the inertia baffle via a retaining spring.

3. A pole lifting protection device according to claim 1, characterized in that The outer shell includes a left end cover, a right end cover, and a protective cover. The left end cover and the right end cover are rotatably connected to the left and right wheel axles of the upper groove wheel and the left wheel axle of the lower groove through the groove wheel bearings respectively. The right end cover is inserted between the protective gear ring and the right cover plate, and the left cover plate, the right cover plate and the protective gear ring are fixed to the outer shell through the limiting bolts. The protective cover is connected to the left end cover and the right end cover through the connecting bolts.

4. A pole lifting protection device according to claim 1, characterized in that The latch tooth is arranged in an F shape, and a ratchet head is arranged at the end of the vertical wall of the F-shaped latch tooth, and the ratchet head meshes with the inner ratchet of the protective gear ring in the same direction. The two lateral walls of the F-shaped latch tooth are the counterweight parts of the latch tooth, and a protruding stopper is arranged on the latch tooth disk below the lateral wall of the F-shaped latch tooth, and the protruding stopper contacts with the vertical wall of the F-shaped latch tooth, and the F-shaped latch tooth is restricted by the protruding stopper to swing only toward one side.

5. A pole lifting protection device according to claim 1, characterized in that The left wheel shafts of the upper groove wheel and the lower groove wheel are respectively fixedly connected with sprocket wheels, and the sprocket wheels of the upper groove wheel and the lower groove wheel are sleeved with chains.

6. A pole lifting protection device according to claim 1, characterized in that The right end of the axle of the upper groove wheel is connected to the half-axle box, and the bottom of the half-axle box is symmetrically connected to the load-bearing column. The load-bearing column is covered with an arc-shaped buffer pad, and the middle part of the arc-shaped buffer pad is fixedly connected to the load-bearing column. The arc-shaped buffer pads covered on the two load-bearing columns are arranged in a symmetrical manner. The motor shaft is inserted between the two arc-shaped buffer pads, and a torque arm is provided at the position where the motor shaft extends between the two arc-shaped buffer pads. The torque arm is provided with two and is symmetrically connected to the side of the motor shaft. The motor shaft is inserted into the output end of the motor and is controlled to rotate through the output end of the motor.

7. A pole lifting protection device according to claim 6, characterized in that The outer part of the half-axle box is covered with a connecting cover, the right end of the connecting cover is fixedly connected to the outer shell, and the left end of the connecting cover is detachably connected to the motor shell of the motor through the shell bolts.

8. A pole lifting protection device according to claim 1, characterized in that The right end of the wheel shaft of the lower groove wheel extends out of the end of the inertia baffle plate and is connected to a spring, and the spring causes the inertia baffle plate to contact the side surface of the latching teeth connected to the latching teeth plate.

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