CN108075387B - Special lifting auxiliary device for power tower - Google Patents

Special lifting auxiliary device for power tower Download PDF

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Publication number
CN108075387B
CN108075387B CN201611009151.9A CN201611009151A CN108075387B CN 108075387 B CN108075387 B CN 108075387B CN 201611009151 A CN201611009151 A CN 201611009151A CN 108075387 B CN108075387 B CN 108075387B
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China
Prior art keywords
locking
hole
conical
plate
block
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CN201611009151.9A
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Chinese (zh)
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CN108075387A (en
Inventor
李振东
于学超
王磊
赵兴亮
孙晓磊
龚建刚
顾泽林
金阿龙
王福升
于冬
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State Grid Corp of China SGCC
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State Grid Corp of China SGCC
Weifang Power Supply Co of State Grid Shandong Electric Power Co
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Application filed by State Grid Corp of China SGCC, Weifang Power Supply Co of State Grid Shandong Electric Power Co filed Critical State Grid Corp of China SGCC
Priority to CN201611009151.9A priority Critical patent/CN108075387B/en
Publication of CN108075387A publication Critical patent/CN108075387A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables

Abstract

The invention discloses a special lifting assistor for an electric power tower, which comprises a base, wherein a locking device for locking the base on a beam at the lower part of the electric power tower is arranged on the base, a thick round pipe is transversely and vertically fixedly arranged on the base, a lifting rope is wound on the round pipe, the special lifting assistor also comprises a pulley which is wound on the upper section of the lifting rope and is in transmission fit with the round pipe, a locking device for locking the pulley on the beam at the upper part of the electric power tower is also fixedly arranged at the upper end of the pulley, and an outer locking device and an inner locking device are. This patent quality is slim and graceful, and convenient to carry can install electric power tower or transmission tower lower part fast, alone can accomplish the work of transferring heavy insulator chain subaerial light, transfers speed stability, controllable, can die the hoist and mount rope lock of below insulator chain when emergency appears, guarantees that insulator chain can not fall ground and cause the accident, and personnel, equipment security are all high.

Description

Special lifting auxiliary device for power tower
Technical Field
The invention relates to a special lifting auxiliary device for an electric power tower.
Background
Insulator strings are commonly used power devices in power supply lines, and structurally, the insulator strings are mainly combined by two or more insulator elements and are used for flexibly suspending assemblies of wires. For suspending and insulating the wires from the tower and the ground. Therefore, in places with electric power transmission lines and transmission towers, insulator strings are bound to be used for connecting the transmission lines and the transmission towers, and the application range is very wide, and the application number is very large.
In order to ensure the reliable operation of the insulator string, not only regular inspection is required, but also regular maintenance of the insulator string is required, and the insulator sheet with problems needs to be replaced. Since the insulator string often contains 20-30 insulating sheets, the weight is large. Because no special replacing tool is provided, at least several people are needed to complete the replacing operation during replacing, and the operation difficulty is very great on the overhead power transmission tower. Particularly, when the insulator string is placed to the ground from the high altitude, once the insulator string slides or loosens hands due to fatigue, the insulator string directly falls to the ground, and therefore ground accessories are easily broken and the insulator string is damaged in an irreparable mode. More seriously, the operators at high altitude are more dangerous if fatigue and other problems occur.
Disclosure of Invention
The invention aims to solve the technical problems of providing the special lifting auxiliary device for the power tower, which has the advantages of reasonable structure, light weight and convenient carrying, can be quickly installed at the lower part of the power tower or the power transmission tower, can easily finish the work of lowering a heavy insulator string on the ground by one person, has stable and controllable lowering speed, can lock a lifting rope of the insulator string below in an emergency situation, ensures that the insulator string cannot fall off the ground to cause accidents, and has high personnel and equipment safety.
In order to solve the technical problem, the special lifting assistor for the power tower has the structural characteristics that: the base is provided with a locking device for locking the base on a beam at the lower part of the power tower, a thick round pipe is transversely and vertically arranged on the base, a hoisting rope is wound on the round pipe, the pulley is wound on the upper section of the hoisting rope in a transmission fit manner, a locking device for locking the pulley on the beam at the upper part of the power tower is also fixedly arranged at the upper end of the pulley, an outer locking shaft is transversely and vertically arranged on the base, a locking sleeve is rotatably arranged on the outer locking shaft, the outer locking device capable of tightly pressing the hoisting rope at the periphery of the round pipe is arranged on the locking sleeve, an inner locking shaft coaxially arranged is transversely and vertically arranged on the base in the round pipe, a rotary table is rotatably arranged on the inner locking shaft, and the inner locking device for locking the hoisting rope on the round pipe is arranged on the rotary table.
This special lift assistor of electric power tower realizes rational in infrastructure through the two locking structure of pipe friction, and the quality is light, and convenient to carry can install electric power tower or transmission tower lower part fast, alone can accomplish the work of transferring heavy insulator chain subaerial easily, transfers speed stable, controllable, can die the hoist and mount rope lock of below insulator chain when emergency appears, guarantees that insulator chain can not fall ground and causes the accident, personnel, equipment security all are high.
The round tube type friction double-locking structure mainly comprises a base, a round tube, an outer locking shaft, a locking sleeve, an outer locking device, an inner locking shaft, a rotary disc and an inner locking device. The base is a flat plate structure, is a main body framework of the patent, is an installation carrier of other components, and provides installation positions and spaces for the other components. Base one side is equipped with locking device, and the base passes through locking device and installs fast on the crossbeam of electric power tower or transmission tower lower part, realizes the quick installation of this patent promptly. This patent is when the installation is used, and general base face is vertical setting. The round pipe is a round pipe-shaped sleeve, and the round pipe is axially and horizontally arranged and is vertically and fixedly connected with the base. The round pipe mainly has the function of providing a winding and force application carrier for a hoisting rope for hoisting an insulator string. During the actual production, the pipe end still can coaxial rigid coupling have a horn pipe, and the thinner one end of horn pipe docks with the pipe, and the pipe setting is kept away from to the thicker one end of horn pipe. Set up the main objective of horn pipe, be in order to carry on spacingly to the terminal hoist and mount rope of pipe, prevent that hoist and mount rope from the terminal slippage of pipe. During actual manufacturing, the outer end of the outer locking cover is correspondingly and fixedly provided with a conical arc sheet corresponding to the horn tube, the conical arc sheet is matched with the inside and the outside of the horn tube, the hoisting rope is limited in the arc-shaped channel, and the conical arc sheet has the function of guaranteeing reliable work. When preventing insulator chain under actual, the pedestal mounting is in electric power tower lower part, and the pulley mounting is on electric power tower upper portion, and the hoist and mount rope twines between pulley and pipe. The upper section of the hoisting rope is connected with the insulator string, and the lower end of the hoisting rope is held by an operator. The second function of the round tube is to counteract the gravity of the insulator string when the insulator string descends through the friction force between the round tube and the hoisting rope. Obviously, the more the number of turns of the hoisting rope wound on the round pipe, the larger the friction force of the hoisting rope receiving the round pipe is, the larger the gravity capable of overcoming the insulator string is, and therefore the number of turns of the hoisting rope can be determined according to the actual weight of the insulator string. According to stress analysis, the gravity of the insulator string is equal to the sum of the friction force between the circular tube and the hoisting rope and the pulling force of an operator. Obviously, the operator can control the sliding speed of the hoisting rope, namely the lowering speed of the insulator string by controlling the pulling force of the hoisting rope. In detail, when the operator applies a small pulling force, the gravity of the insulator string is greater than the friction force between the circular tube and the hoisting rope and the pulling force applied by the operator, and the insulator string begins to be slowly lowered. When the pulling force is continuously reduced by the operator, the insulator string is transferred more and more quickly. When an operator applies a large pulling force, the gravity of the insulator string is smaller than the friction force between the circular tube and the hoisting rope and the pulling force applied by the operator, and the insulator string starts to slow down slowly until the insulator string stops. When the friction force between the circular tube and the hoisting rope is reduced due to the fact that accidents occur such as dampness or rain, when an operator applies full force and cannot reduce the lowering speed of the insulator string, the outer locking device and the inner locking device can be triggered to act respectively through the locking sleeve sleeved on the outer locking shaft and the rotary disc sleeved on the inner locking shaft to emergently suspend the insulator string. When outer locking device and interior locking device were triggered, both will be in the same place hoist and mount rope with the relative locking of pipe, hoist and mount rope just can't rotate relatively the pipe like this, just also can't realize transferring of insulator chain, play the effect of emergency protection. Therefore, when the insulator string placing device is used, heavy insulator strings can be easily controlled and stably placed by only one ground person, and operation is very simple. Even when special conditions appear, also can realize safety protection through outer locking device and interior locking device, fundamentally has improved the use reliability and the security of this patent, has effectively ensured personal and equipment safety.
During the actual production, the pipe end still can coaxial rigid coupling have a horn pipe, and the thinner one end of horn pipe docks with the pipe, and the pipe setting is kept away from to the thicker one end of horn pipe. Set up the main objective of horn pipe, be in order to carry on spacingly to the terminal hoist and mount rope of pipe, prevent that hoist and mount rope from the terminal slippage of pipe. During actual manufacturing, the outer end of the outer locking cover is correspondingly and fixedly provided with a conical arc sheet corresponding to the horn tube, the conical arc sheet is matched with the inside and the outside of the horn tube, the hoisting rope is limited in the arc-shaped channel, and the conical arc sheet has the function of guaranteeing reliable work.
As the improvement, outer locking device is including setting firmly the outer locking cover in lock sleeve one side, and outer locking cover is half buckle cover arc board in the pipe outside, is equipped with the arc passageway that the hoist and mount rope passes through between outer locking cover inner wall and the pipe outer wall, and the lock sleeve opposite side has set firmly the pull ring through the lever, and the pull ring is connected with pedal ring through the stay cord.
The external locking device mainly comprises an external locking cover, a channel, a lever, a pull ring, a pull rope, a pedal plate and other structures. Wherein, outer locking cover and lever are fixed respectively in the both sides of lock sleeve, for example left side and right side. Therefore, the outer locking cover and the lever form a hinged installation relation with the base through the locking sleeve and the outer locking shaft, and when the tail end of the lever is driven to move, the lever rotates around the outer locking shaft under the support of the locking sleeve, so that the aim of driving the outer locking cover to swing is fulfilled. In this patent, outer locking cover is located pipe below and partial right side, and the purpose of design like this is for the hoist and mount rope upper segment on the pipe of convenient winding upwards extend to be connected with the pulley, and hoist and mount rope hypomere of also being convenient for extends to left side or below, has greatly improved the simple operation nature, and is very convenient. In this patent, the outer locking cover is an arc plate that is half-buckled to cover the outside of the round tube. Under the natural state, the outer locking cover and the circular tube are coaxially arranged, and an arc-shaped gap, namely an arc-shaped channel, is formed between the inner wall of the outer locking cover and the outer wall of the circular tube. The channel is a space through which the hoisting rope passes, and is far wider than the winding thickness of the hoisting rope in a natural state, so that the hoisting rope can slide smoothly. In this patent, the lever end has set firmly the pull ring, and the pull ring passes through the stay cord downwardly extending and is connected with pedal ring, therefore lever, pull ring, stay cord and pedal ring constitute transmission fit relation in proper order. In practical use, the base is generally arranged at a position where the pedal ring is slightly higher than the ground and the downward stepping stroke of the pedal ring can drive the outer locking cover to press the hoisting rope on the circular tube. In the work, when stepping on pedal ring, pedal ring will be through stay cord and pull ring pulling lever lower hem, and the lever can prize the outer lock cover upper hem through lock sleeve and outer locking shaft, and the convex passageway can narrow down this moment, and outer lock cover inner wall can take place the friction with the hoist and mount rope. When the pedal ring is stepped on to the bottom, the channel between the outer locking cover and the round pipe is narrowest, the hoisting rope is fixedly locked on the round pipe, the locking of the hoisting rope and the safe positioning of the insulator string are realized, and the working safety is greatly guaranteed. For convenience of description, this state is referred to as a locked state.
As an improvement, the inner wall of the outer locking cover is uniformly provided with locking grooves which are coaxial with the round pipe, and rubber strips are arranged in the locking grooves.
The locking grooves are uniformly distributed on the inner wall of the outer locking cover, the rubber strips are arranged in the locking grooves, the main purpose is to increase the friction force of the lifting rope in the locking state, and the rubber strips are used for applying protection to the lifting rope by means of elasticity of the rubber strips. In this patent, locking groove and rubber strip all are the rectangular form with the coaxial setting of pipe, set up like this and guarantee to detain all hoist and mount ropes in the cover scope and all can receive the friction and the protection of rubber strip, have also increased the reliability of locking.
As a preferred embodiment, the inner locking device comprises a plurality of locking slideways which are uniformly arranged on the circular pipe in a surrounding manner and penetrate through the inside and the outside of the circular pipe, locking plates are inserted into the locking slideways, the inner ends of the locking plates are hinged to the periphery of the rotary table through ring shafts, linkage slideways which penetrate through the inside and the outside of the circular pipe are further arranged on the circular pipe, linkage rods are inserted into the linkage slideways, the inner ends of the linkage rods are hinged to the periphery of the rotary table through linkage shafts, the outer ends of the linkage rods are hinged to the inner wall of the outer locking cover through driving shafts, the outer edges of the locking plates are not inserted into the locking slideways when the outer locking cover is far away from.
The inner locking device mainly comprises a locking slideway, a locking plate, a ring shaft, a linkage slideway, a linkage rod, a linkage hinge shaft, a driving shaft and other structures. Wherein, the locking slide is evenly arranged on the circular tube in a surrounding manner and is arranged by penetrating through the inner side and the outer side of the circular tube. The locking slide way is arranged in a strip shape and extends axially along the round tube. The locking plate and the locking slideway are in sliding insertion connection, and the locking plate is also a long-strip-shaped flat plate which is arranged along the locking slideway in an extending mode. The inner end of the locking plate is hinged on the periphery of the turntable through the ring shaft, so that the locking plate can swing around the ring shaft relative to the turntable. In a natural state, the outer edge of the locking plate is submerged into the locking slideway, i.e. the locking slideway is not exposed. And when the locking plate is in a natural state, the locking plate is obliquely inserted into the locking slideway, namely, an included angle exists between the insertion direction of the locking plate and the radial direction of the circular tube. In this patent, the locking plate can either be articulated at the periphery of the turntable by a long ring shaft or by two or more ring shafts. The round tube is also provided with a linkage slideway, the linkage slideway is arranged by penetrating through the inner side and the outer side of the round tube and is arranged towards the middle part of the inner wall of the outer locking cover. A linkage rod is inserted in the linkage slide way in a sliding mode, the inner end, extending out of the circular tube, of the linkage rod is hinged to the periphery of the rotary table through a linkage shaft, and the outer end, extending out of the circular tube, of the linkage rod is correspondingly hinged to the middle of the inner wall of the outer locking cover through a driving shaft. Because the driving shaft, the linkage shaft, the ring shaft and the turntable are coaxially arranged with the outer locking shaft, the locking cover forms a transmission matching relation with the turntable and the locking plate through the linkage rod. When this patent was switched to locking state by natural state, also when stepping on pedal ring, outer locking cover was close to the pipe, and convex passageway narrows down, and the hoist and mount rope that begins to rub slows down insulator chain and transfers speed. Meanwhile, the outer locking cover drives the turntable to rotate at a small angle through the linkage rod, and then the turntable drives the locking plate to move synchronously. And the rotation direction of the drive plate drive rotating disc is right, so that the locking plate slides towards the direction extending out of the locking slideway, the outer edge of the locking plate can slide out of the locking slideway, and a plurality of convex ribs are formed on the periphery of the circular tube. Therefore, the friction force between the circular tube and the hoisting rope is increased, the hoisting rope wound on the circular tube is fixed and clamped, the cross section of the arc-shaped channel is further reduced, and the hoisting rope is more difficult to pass through. Furthermore, the locking plate outside is along the pipe axial extension setting with the rubber strip all, consequently, and the cooperation between them can make convex passageway be the wave of height fluctuation, has strengthened the locking force of this patent to the hoist and mount rope greatly, and is more reliable to insulator chain's transfer location. The insulator string is lowered normally. Therefore, this patent is when meetting special circumstances, if play the light rain suddenly and lead to pipe and hoist and mount rope frictional force to reduce, perhaps ground operating personnel has tired the needs rest, perhaps ground operating personnel misoperation leads to hoist and mount rope from the hand slippage, and ground operating personnel need only step on pedal ring with the foot this moment, can realize insulator chain's quick location, easy operation, safe and reliable. Of course, the ground operator can also completely release the lower section of the hoisting rope, and only controls the sliding of the hoisting rope in a pedal ring interval stepping mode, so that the insulator string can be lowered in a pause-type mode. Ground operating personnel can also make outer locking device and interior locking device reach critical locking state through the mode of controlling pedal ring and stepping on the angle down, and the hoist and mount rope is not locked totally this moment, and it is only slower to slide, has also realized "critical formula of insulator chain slowly transfers".
As an improvement, the outer edge of the locking plate is wedge-shaped.
The outer edge of the locking plate is set to be wedge-shaped, so that the friction force between the outer edge of the locking plate and the hoisting rope is increased, and the locking effect is improved.
As an improvement, a conical rubber sleeve with a thin upper end and a thick lower end is sleeved on the lower section of the hoisting rope, and a rope buckle is tied on the hoisting rope below the conical rubber sleeve.
The conical rubber sleeve is arranged at the lower section of the hoisting rope, and the rope buckle is tied on the hoisting rope, so that the hoisting rope can be conveniently held by ground operators, and is mainly used under the condition that the outer locking device and the inner locking device are out of order under the very special condition. When the outer locking device and the inner locking device are out of order, the rapidly-placed insulator string can drive the hoisting rope to move rapidly, and finally, the conical rubber sleeve at the tail end of the hoisting rope can be brought into the arc-shaped channel between the outer locking decoration and the circular tube. Because the conical rubber sleeve is conical, the upper end is thin and is easy to enter the channel, and the lower end is thick and is not easy to pass through the channel. The conical rubber sleeve that the interval set up like this can constantly slow down insulator chain's speed of transferring, and the power of transferring that directly ends insulator chain is not enough to take the conical rubber sleeve of card income passageway out of the passageway, has also realized insulator chain's safe positioning.
As an implementation mode, a conical hole and a conical strip hole are arranged on a base, a conical bolt is inserted in the conical hole and the conical strip hole and can slide along the conical strip hole, a locking device is fixedly arranged at the end part of the conical bolt, a cross beam is an angle steel, the locking device comprises an upper flat plate which is fixedly arranged at the bottom part of the conical bolt and extends horizontally, a longitudinal plate which extends downwards is vertically and fixedly arranged at the rear end of the upper flat plate, a lower flat plate which is arranged in parallel with the upper and lower parts of the upper flat plate at intervals is fixedly arranged at the lower part of the longitudinal plate, a clamping groove for containing the angle steel is formed between the upper flat plate and the lower flat plate, a pressing block which is in press fit with the inner wall of the angle steel is also arranged in the clamping groove, an upper hole is arranged at the end part of the upper flat plate, a transverse block which is vertically matched with the end part of the upper flat plate is fixedly arranged at the upper part of the pressing block, a transverse, a lower stud bolt connected with the blind hole in a threaded manner is inserted in the lower hole.
In this patent, be equipped with a plurality of butt joint holes of being connected with locking device on the base, mainly include circular cone hole and circular cone strip hole, wherein circular cone strip hole is the horizontal elongated strip hole of circular cone hole size. Whether the hole is a conical hole or a conical strip hole, the longitudinal section of the hole is a conical hole with a narrow end and a wide end. Conical bolts are inserted in the conical holes and the conical strip holes, one end of each conical bolt is fixedly provided with a conical block which is completely inserted and matched with the conical hole, and the other end of each conical bolt is correspondingly and fixedly connected with the locking device. The conical bolt is shaped like a bolt, although the name is bolt, but there is no threaded connection fit. After the conical plugging block of the conical bolt is inserted into the conical hole and the conical strip hole, the conical plugging block is completely immersed into the conical hole or the conical strip hole, and the end face of the conical plugging block is flush with the base, so that the hoisting rope in movement cannot be wound around the base to be adversely affected. The conical bolt can only rotate in the conical hole, so that the mounting angle of the locking device can be freely adjusted. The conical bolt can rotate in the conical strip hole and can freely slide along the length direction of the conical strip hole, so that the mounting angle of the locking device can be adjusted, the mounting position of the locking device can be adjusted, the adaptability is strong, and the quick mounting is realized.
The angle steel is the most common hardware fitting structure for the cross beam of the power tower, and is widely applied to the power tower. To this kind of angle steel crossbeam, this patent has designed corresponding locking device. The locking device mainly comprises an upper flat plate, a lower flat plate and a longitudinal plate, wherein the upper flat plate and the lower flat plate are arranged in parallel at intervals up and down, and the longitudinal plate is fixedly connected with the upper flat plate and the lower flat plate. In this patent, the upper plate and the lower plate are spaced one above the other, so that a nip or cavity is formed between the two. The height of the clamping groove is slightly higher than that of the angle steel, so that the clamping groove can be conveniently and smoothly and quickly clamped on the angle steel. One of the functions of the clamping groove is to contain the angle steel. For convenience of description, two plate surfaces forming the angle steel are defined, a horizontally arranged plate surface is defined as a transverse flat plate, a vertically arranged plate surface is defined as a longitudinal flat plate, a space semi-surrounded by the transverse flat plate and the longitudinal flat plate is defined as an inner cavity, one side semi-surrounded by the transverse flat plate and the longitudinal flat plate is defined as an inner side, and the other side is defined as an outer side. The locking device also comprises a pressing block, and the pressing block can be placed in the inner cavity of the angle steel. The pressing block is provided with a top wall which can be supported or in a pressing fit with the bottom surface of the angle steel transverse plate and a side wall which can be in a pressing fit with the inner side surface of the angle steel longitudinal plate. When the clamping groove is clamped on the angle steel, the pressing block can just slide into the inner cavity of the angle steel, so that the top wall of the pressing block is tightly matched with the transverse flat plate in a sticking mode, and the side wall of the pressing block is tightly matched with the longitudinal flat plate in a sticking mode.
The lower flat plate is provided with a lower hole, and a lower stud is inserted in the lower hole. The bottom of the pressing block is provided with a blind hole, the blind hole and the lower hole are arranged in a vertically corresponding mode, and the blind hole is in threaded connection with the upper portion of the lower stud. When the pressing block slides into the inner cavity of the angle steel, the lower stud can be screwed into the blind hole, and the pressing block is fixedly connected with the lower flat plate at the moment. Like this, the angle steel top receives the spacing of last flat board, and the below receives the spacing of lower flat board, indulges the flat board outside and receives the spacing of vertical board, indulges the flat inboard spacing that receives the compact heap. That is to say, the angle steel has all received limiting displacement in four directions about upper and lower, left and right, and from the direction of reaction, this locking device also receives the angle steel about, down, left and right four directions spacing, has guaranteed that this locking device fixes on the angle steel reliably.
The end part of the upper flat plate is provided with an upper hole, and an upper bolt is inserted in the upper hole. The lateral side of the upper part of the pressing block is fixedly provided with a transverse block, the transverse block extends outwards horizontally, and the transverse block and the end part of the upper flat plate are arranged up and down correspondingly. The transverse block is provided with a transverse hole, and the transverse hole and the upper hole are arranged in a vertically corresponding mode. When the compact heap slided into the angle steel inner chamber, can with in the bolt cartridge in proper order to go up hole and cross-bore and screw up, the cross-block just so is in the same place through last bolt and last dull and stereotyped rigid coupling, also is exactly that the compact heap is fixed together with last flat board. Under the prerequisite that the compact heap has been in the same place with lower dull and stereotyped fixed connection, the compact heap is in the same place with last dull and stereotyped fixed connection again, makes this locking device form a complete full enclosure structure. Like this, the angle steel top receives the spacing of last flat board, and the below receives the spacing of lower flat board, indulges the flat board outside and receives the spacing of vertical board, indulges the flat inboard spacing that receives the compact heap. That is to say, the angle steel has all received limiting displacement in four directions about upper and lower, left and right, and from the direction of reaction, this locking device also receives the angle steel about, down, left and right four directions spacing, has guaranteed that this locking device fixes on the angle steel reliably.
Because lower double-screw bolt and last bolt all have locking limiting displacement to the compact heap, consequently this locking device in use even have one in lower double-screw bolt and the last bolt because wind blows vibrations or other reasons and become flexible and even drop, also can guarantee that the compact heap can cartridge reliably in the inner chamber of angle steel, has also guaranteed reliability and life in the use of this patent.
As an implementation mode, the pressing block comprises a main block and a wedge-shaped block with a right-angled triangle outer contour, the blind hole is formed in the bottom of the main block, and an inclined surface in sliding fit with a bevel edge surface of the wedge-shaped block is arranged on a portion, close to the angle steel, of the bottom of the main block.
In this patent, the compact heap adopts sliding fit's two body structures, main piece and wedge. The wedge-shaped block is characterized in that the outline shape of the wedge-shaped block is a right triangle, for convenience of description, the side walls corresponding to two right-angle sides of the right triangle in the wedge-shaped block are respectively called a straight bottom wall matched with the lower flat plate and a straight side wall matched with the longitudinal flat plate, and the side walls corresponding to the hypotenuse of the triangle in the wedge-shaped block are called oblique side walls or hypotenuse faces. An inclined plane is arranged between the bottom surface of the main block and the side surface close to the longitudinal flat plate, the inclined plane is consistent with the inclined angle of the inclined edge surface of the wedge block when the bottom surface of the main block is tightly attached to the lower flat plate, and the length of the inclined edge of the wedge block is slightly longer than that of the inclined edge of the compression block. Set up like this, can guarantee that the bottom surface of master block can be higher than the straight diapire of wedge a little when the side of vertical flat board and the straight lateral wall parallel and level of wedge are pressed close to the master block, that is to say, can have a little clearance between master block bottom surface and the lower flat top surface. The blind hole that compact heap bottom set up sets up on main piece bottom surface, therefore, down the double-screw bolt can exert decurrent pulling force to main piece through this blind hole. The clearance provides the gliding space for the main block receives when the pulling force down along wedge hypotenuse face gliding, perhaps says so, for the wedge under the main block gliding power down to indulge dull and stereotyped the removal and compress tightly the board and provide and compress tightly the space, just so realized turning into the conversion function to wedge horizontal migration thrust to the vertical decurrent pulling force of main block, just also made the compact heap play the effect that compresses tightly the angle steel indulge dull and stereotyped, guaranteed the reliability of this patent fastening on the angle steel.
As an improvement, a sliding groove longitudinally extending along the inclined surface is arranged on the inclined surface, a sliding way extending along the length direction of the sliding groove is arranged on the groove wall of the sliding groove, a sliding plate longitudinally extending along the inclined edge surface is fixedly arranged on the inclined edge surface of the wedge-shaped block, the sliding plate is in sliding fit with the sliding groove, and a sliding block in sliding fit with the sliding way is fixedly arranged in the middle of the sliding plate.
The main block is provided with a sliding groove longitudinally extending along the inclined plane, and a sliding plate in sliding fit with the sliding groove is fixedly arranged on the inclined plane of the wedge block, so that the wedge block and the main block can be guided along the sliding direction of the inclined plane, and when the main block is pulled down by a lower stud, the wedge block can only vertically translate to the angle steel. The slide way extending along the slide way is arranged on the wall of the slide way, namely the slide way is in a long strip shape extending along the length direction of the slide way, the slide block which is inserted into the slide way and slides along the length direction of the slide way is fixedly arranged in the middle of the slide plate, the effect of limiting the relative sliding distance between the slide plate and the slide way can be achieved, the wedge-shaped block and the main block are connected together in a limiting way through the slide way and the slide block, and the effect that the wedge-shaped block and the main block can only slide along the slide. Therefore, when the wedge-shaped block is installed, an operator only needs to hold any one of the main block or the wedge-shaped block, the wedge-shaped block is more convenient to carry, the defect that the wedge-shaped block is easy to fall in the operation process is overcome, and the construction efficiency is improved.
In conclusion, the special lifting auxiliary device for the power tower with the structure is reasonable in structure, light in weight and convenient to carry, can be quickly installed on the lower portion of the power tower or the lower portion of the power transmission tower, and can easily finish the work of lowering a heavy insulator string on the ground by one person, the lowering speed is stable and controllable, the lifting rope of the insulator string below can be locked in case of emergency, the insulator string is guaranteed not to fall to the ground to cause accidents, and the safety of personnel and equipment is high.
Drawings
The invention is described in further detail with reference to the accompanying drawings:
FIG. 1 is a schematic view of the overall structure of the patent;
FIG. 2 is a schematic view of the internal locking mechanism in its natural state;
FIG. 3 is a schematic structural view of the locking state of the inner locking device;
FIG. 4 is a schematic structural diagram of a first locking matching mode of two locking devices;
FIG. 5 is a schematic structural view of a second locking matching mode of two locking devices;
FIG. 6 is a schematic structural view of a third locking matching mode of two locking devices;
FIG. 7 is a schematic view of the locking device;
FIG. 8 is a schematic view of the main block and wedge block assembled;
FIG. 9 is a schematic structural view of the assembled main block and wedge block;
fig. 10 is a schematic view of the matching structure of the main block and the wedge block when the upper bolt and the lower stud are screwed.
Detailed Description
As shown in the figure, this special lift assistor of electric power tower includes base 1, be equipped with on the base and lock locking device 2 on electric power tower lower part crossbeam with the base, horizontal perpendicular has set firmly thicker pipe 3 on the base, the winding has hoist and mount rope 4 on the pipe, still include with hoist and mount rope upper segment winding transmission complex pulley 5, the pulley upper end has also set firmly the locking device with pulley locking on electric power tower upper portion crossbeam, horizontal perpendicular has set firmly outer locking shaft 6 on the base, it is equipped with lock sleeve 7 to rotate the cover on the outer locking shaft, install on the lock sleeve and compress tightly the outer locking device 8 in the pipe periphery with hoist and mount rope, still horizontal perpendicular set firmly the interior lock shaft 9 of coaxial setting on the base in the pipe, interior lock shaft rotates and installs carousel 11, be equipped with on carousel and the pipe and lock rope locking device 12 on the pipe with hoist and mount. The special lifting auxiliary device for the electric power tower mainly comprises a base, a circular tube, an outer locking shaft, a locking sleeve, an outer locking device, an inner locking shaft, a rotary table and an inner locking device. The base is a flat plate structure, is a main body framework of the patent, is an installation carrier of other components, and provides installation positions and spaces for the other components. Base one side is equipped with locking device, and the base passes through locking device and installs fast on the crossbeam of electric power tower or transmission tower lower part, realizes the quick installation of this patent promptly. This patent is when the installation is used, and general base face is vertical setting. The round pipe is a round pipe-shaped sleeve, and the round pipe is axially and horizontally arranged and is vertically and fixedly connected with the base. The round pipe mainly has the function of providing a winding and force application carrier for a hoisting rope for hoisting an insulator string. When the insulator string is actually arranged below the power tower, the base is arranged on the lower portion of the power tower, the pulley is arranged on the upper portion of the power tower, and the hoisting rope is wound between the pulley and the round pipe. The upper section of the hoisting rope is connected with the insulator string, and the lower end of the hoisting rope is held by an operator. The second function of the round tube is to counteract the gravity of the insulator string when the insulator string descends through the friction force between the round tube and the hoisting rope. Obviously, the more the number of turns of the hoisting rope wound on the round pipe, the larger the friction force of the hoisting rope receiving the round pipe is, the larger the gravity capable of overcoming the insulator string is, and therefore the number of turns of the hoisting rope can be determined according to the actual weight of the insulator string. According to stress analysis, the gravity of the insulator string is equal to the sum of the friction force between the circular tube and the hoisting rope and the pulling force of an operator. Obviously, the operator can control the sliding speed of the hoisting rope, namely the lowering speed of the insulator string by controlling the pulling force of the hoisting rope. In detail, when the operator applies a small pulling force, the gravity of the insulator string is greater than the friction force between the circular tube and the hoisting rope and the pulling force applied by the operator, and the insulator string begins to be slowly lowered. When the pulling force is continuously reduced by the operator, the insulator string is transferred more and more quickly. When an operator applies a large pulling force, the gravity of the insulator string is smaller than the friction force between the circular tube and the hoisting rope and the pulling force applied by the operator, and the insulator string starts to slow down slowly until the insulator string stops. When the friction force between the circular tube and the hoisting rope is reduced due to the fact that accidents occur such as dampness or rain, when an operator applies full force and cannot reduce the lowering speed of the insulator string, the outer locking device and the inner locking device can be triggered to act respectively through the locking sleeve sleeved on the outer locking shaft and the rotary disc sleeved on the inner locking shaft to emergently suspend the insulator string. When outer locking device and interior locking device were triggered, both will be in the same place hoist and mount rope with the relative locking of pipe, hoist and mount rope just can't rotate relatively the pipe like this, just also can't realize transferring of insulator chain, play the effect of emergency protection. Therefore, when the insulator string placing device is used, heavy insulator strings can be easily controlled and stably placed by only one ground person, and operation is very simple. Even when special conditions appear, also can realize safety protection through outer locking device and interior locking device, fundamentally has improved the use reliability and the security of this patent, has effectively ensured personal and equipment safety.
During the actual production, the pipe end still can coaxial rigid coupling have a horn pipe, and the thinner one end of horn pipe docks with the pipe, and the pipe setting is kept away from to the thicker one end of horn pipe. Set up the main objective of horn pipe, be in order to carry on spacingly to the terminal hoist and mount rope of pipe, prevent that hoist and mount rope from the terminal slippage of pipe. During actual manufacturing, the outer end of the outer locking cover is correspondingly and fixedly provided with a conical arc sheet corresponding to the horn tube, the conical arc sheet is matched with the inside and the outside of the horn tube, the hoisting rope is limited in the arc-shaped channel, and the conical arc sheet has the function of guaranteeing reliable work.
In this patent, outer locking device is including setting firmly the outer locking cover 13 in lock sleeve one side, and outer locking cover is half buckle cover arc board in the pipe outside, is equipped with the arc passageway 14 that the hoist and mount rope passes through between outer locking cover inner wall and the pipe outer wall, and the lock sleeve opposite side has set firmly pull ring 16 through lever 15, and the pull ring is connected with pedal ring 18 through stay cord 17. The external locking device mainly comprises an external locking cover, a channel, a lever, a pull ring, a pull rope, a pedal plate and other structures. Wherein, outer locking cover and lever are fixed respectively in the both sides of lock sleeve, for example left side and right side. Therefore, the outer locking cover and the lever form a hinged installation relation with the base through the locking sleeve and the outer locking shaft, and when the tail end of the lever is driven to move, the lever rotates around the outer locking shaft under the support of the locking sleeve, so that the aim of driving the outer locking cover to swing is fulfilled. In this patent, outer locking cover is located pipe below and partial right side, and the purpose of design like this is for the hoist and mount rope upper segment on the pipe of convenient winding upwards extend to be connected with the pulley, and hoist and mount rope hypomere of also being convenient for extends to left side or below, has greatly improved the simple operation nature, and is very convenient. In this patent, the outer locking cover is an arc plate that is half-buckled to cover the outside of the round tube. Under the natural state, the outer locking cover and the circular tube are coaxially arranged, and an arc-shaped gap, namely an arc-shaped channel, is formed between the inner wall of the outer locking cover and the outer wall of the circular tube. The channel is a space through which the hoisting rope passes, and is far wider than the winding thickness of the hoisting rope in a natural state, so that the hoisting rope can slide smoothly. In this patent, the lever end has set firmly the pull ring, and the pull ring passes through the stay cord downwardly extending and is connected with pedal ring, therefore lever, pull ring, stay cord and pedal ring constitute transmission fit relation in proper order. In practical use, the base is generally arranged at a position where the pedal ring is slightly higher than the ground and the downward stepping stroke of the pedal ring can drive the outer locking cover to press the hoisting rope on the circular tube. In the work, when stepping on pedal ring, pedal ring will be through stay cord and pull ring pulling lever lower hem, and the lever can prize the outer lock cover upper hem through lock sleeve and outer locking shaft, and the convex passageway can narrow down this moment, and outer lock cover inner wall can take place the friction with the hoist and mount rope. When the pedal ring is stepped on to the bottom, the channel between the outer locking cover and the round pipe is narrowest, the hoisting rope is fixedly locked on the round pipe, the locking of the hoisting rope and the safe positioning of the insulator string are realized, and the working safety is greatly guaranteed. For convenience of description, this state is referred to as a locked state.
In this patent, the equipartition has the locking groove 19 with the coaxial setting of pipe on the outer locking cover inner wall, installs rubber strip 20 in the locking groove. The locking grooves are uniformly distributed on the inner wall of the outer locking cover, the rubber strips are arranged in the locking grooves, the main purpose is to increase the friction force of the lifting rope in the locking state, and the rubber strips are used for applying protection to the lifting rope by means of elasticity of the rubber strips. In this patent, locking groove and rubber strip all are the rectangular form with the coaxial setting of pipe, set up like this and guarantee to detain all hoist and mount ropes in the cover scope and all can receive the friction and the protection of rubber strip, have also increased the reliability of locking.
In this embodiment, interior locking device includes that even ring establishes a plurality of locking slide 21 outside the link up pipe on the pipe, locking slide interpolation has the locking plate 22, the locking plate inner articulates in the carousel periphery through ring axle 23, still be equipped with link slide 24 that link up inside and outside on the pipe, link slide interpolation has the linkage stick 25, link stick inner articulates in the carousel periphery through universal driving shaft 26, the linkage stick outer end articulates on outer locking cover inner wall through drive shaft 27, the locking plate outer fringe is submerged in the locking slide when outer locking cover keeps away from the pipe, the locking plate outer fringe stretches out the locking slide when outer locking cover is close to the pipe. The inner locking device mainly comprises a locking slideway, a locking plate, a ring shaft, a linkage slideway, a linkage rod, a linkage hinge shaft, a driving shaft and other structures. Wherein, the locking slide is evenly arranged on the circular tube in a surrounding manner and is arranged by penetrating through the inner side and the outer side of the circular tube. The locking slide way is arranged in a strip shape and extends axially along the round tube. The locking plate and the locking slideway are in sliding insertion connection, and the locking plate is also a long-strip-shaped flat plate which is arranged along the locking slideway in an extending mode. The inner end of the locking plate is hinged on the periphery of the turntable through the ring shaft, so that the locking plate can swing around the ring shaft relative to the turntable. In a natural state, the outer edge of the locking plate is submerged into the locking slideway, i.e. the locking slideway is not exposed. And when the locking plate is in a natural state, the locking plate is obliquely inserted into the locking slideway, namely, an included angle exists between the insertion direction of the locking plate and the radial direction of the circular tube. In this patent, the locking plate can either be articulated at the periphery of the turntable by a long ring shaft or by two or more ring shafts. The round tube is also provided with a linkage slideway, the linkage slideway is arranged by penetrating through the inner side and the outer side of the round tube and is arranged towards the middle part of the inner wall of the outer locking cover. A linkage rod is inserted in the linkage slide way in a sliding mode, the inner end, extending out of the circular tube, of the linkage rod is hinged to the periphery of the rotary table through a linkage shaft, and the outer end, extending out of the circular tube, of the linkage rod is correspondingly hinged to the middle of the inner wall of the outer locking cover through a driving shaft. Because the driving shaft, the linkage shaft, the ring shaft and the turntable are coaxially arranged with the outer locking shaft, the locking cover forms a transmission matching relation with the turntable and the locking plate through the linkage rod. When this patent was switched to locking state by natural state, also when stepping on pedal ring, outer locking cover was close to the pipe, and convex passageway narrows down, and the hoist and mount rope that begins to rub slows down insulator chain and transfers speed. Meanwhile, the outer locking cover drives the turntable to rotate at a small angle through the linkage rod, and then the turntable drives the locking plate to move synchronously. And the rotation direction of the drive plate drive rotating disc is right, so that the locking plate slides towards the direction extending out of the locking slideway, the outer edge of the locking plate can slide out of the locking slideway, and a plurality of convex ribs are formed on the periphery of the circular tube. Therefore, the friction force between the circular tube and the hoisting rope is increased, the hoisting rope wound on the circular tube is fixed and clamped, the cross section of the arc-shaped channel is further reduced, and the hoisting rope is more difficult to pass through. Furthermore, the locking plate outside is along the pipe axial extension setting with the rubber strip all, consequently, and the cooperation between them can make convex passageway be the wave of height fluctuation, has strengthened the locking force of this patent to the hoist and mount rope greatly, and is more reliable to insulator chain's transfer location. The insulator string is lowered normally. Therefore, this patent is when meetting special circumstances, if play the light rain suddenly and lead to pipe and hoist and mount rope frictional force to reduce, perhaps ground operating personnel has tired the needs rest, perhaps ground operating personnel misoperation leads to hoist and mount rope from the hand slippage, and ground operating personnel need only step on pedal ring with the foot this moment, can realize insulator chain's quick location, easy operation, safe and reliable. Of course, the ground operator can also completely release the lower section of the hoisting rope, and only controls the sliding of the hoisting rope in a pedal ring interval stepping mode, so that the insulator string can be lowered in a pause-type mode. Ground operating personnel can also make outer locking device and interior locking device reach critical locking state through the mode of controlling pedal ring and stepping on the angle down, and the hoist and mount rope is not locked totally this moment, and it is only slower to slide, has also realized "critical formula of insulator chain slowly transfers".
In this patent, the outer edge of the locking plate is wedge-shaped. The outer edge of the locking plate is set to be wedge-shaped, so that the friction force between the outer edge of the locking plate and the hoisting rope is increased, and the locking effect is improved.
In this embodiment, a conical rubber sleeve 28 with a thin upper end and a thick lower end is sleeved on the lower section of the hoisting rope, and a rope fastener 29 is tied on the hoisting rope below the conical rubber sleeve. The conical rubber sleeve is arranged at the lower section of the hoisting rope, and the rope buckle is tied on the hoisting rope, so that the hoisting rope can be conveniently held by ground operators, and is mainly used under the condition that the outer locking device and the inner locking device are out of order under the very special condition. When the outer locking device and the inner locking device are out of order, the rapidly-placed insulator string can drive the hoisting rope to move rapidly, and finally, the conical rubber sleeve at the tail end of the hoisting rope can be brought into the arc-shaped channel between the outer locking decoration and the circular tube. Because the conical rubber sleeve is conical, the upper end is thin and is easy to enter the channel, and the lower end is thick and is not easy to pass through the channel. The conical rubber sleeve that the interval set up like this can constantly slow down insulator chain's speed of transferring, and the power of transferring that directly ends insulator chain is not enough to take the conical rubber sleeve of card income passageway out of the passageway, has also realized insulator chain's safe positioning.
In the patent, a conical hole and a conical strip hole are formed in the base, a conical bolt is inserted into the conical hole and the conical strip hole and can slide along the conical strip hole, and the locking device is fixedly arranged at the end part of the conical bolt.
In this patent, be equipped with a plurality of butt joint holes of being connected with locking device on the base, mainly include circular cone hole and circular cone strip hole, wherein circular cone strip hole is the horizontal elongated strip hole of circular cone hole size. Whether the hole is a conical hole or a conical strip hole, the longitudinal section of the hole is a conical hole with a narrow end and a wide end. Conical bolts are inserted in the conical holes and the conical strip holes, one end of each conical bolt is fixedly provided with a conical block which is completely inserted and matched with the conical hole, and the other end of each conical bolt is correspondingly and fixedly connected with the locking device. The conical bolt is shaped like a bolt, although the name is bolt, but there is no threaded connection fit. After the conical plugging block of the conical bolt is inserted into the conical hole and the conical strip hole, the conical plugging block is completely immersed into the conical hole or the conical strip hole, and the end face of the conical plugging block is flush with the base, so that the hoisting rope in movement cannot be wound around the base to be adversely affected. The conical bolt can only rotate in the conical hole, so that the mounting angle of the locking device can be freely adjusted. The conical bolt can rotate in the conical strip hole and can freely slide along the length direction of the conical strip hole, so that the mounting angle of the locking device can be adjusted, the mounting position of the locking device can be adjusted, the adaptability is strong, and the quick mounting is realized.
In this embodiment, the cross beam is an angle steel 30, the locking device includes an upper flat plate 31 fixed to the bottom of the conical bolt and extending horizontally, a vertical plate 32 extending downward is vertically fixed to the rear end of the upper flat plate, a lower flat plate 33 arranged in parallel and spaced with the upper flat plate is fixed to the lower portion of the vertical plate, a clamping groove 34 for accommodating the angle steel is formed between the upper flat plate and the lower flat plate, a pressing block 35 in press fit with the inner wall of the angle steel is further contained in the clamping groove, an upper hole 36 is formed in the end portion of the upper flat plate, a cross block 37 vertically matched with the end portion of the upper flat plate is fixed to the upper portion of the pressing block, a cross hole 38 corresponding to the upper hole is formed in the cross block, an upper bolt 39 is locked between the cross hole and the upper hole, a lower hole 40 is formed in the lower flat plate, a blind hole 41 matched with the lower hole is.
The angle steel is the most common hardware fitting structure for the cross beam of the power tower, and is widely applied to the power tower. To this kind of angle steel crossbeam, this patent has designed corresponding locking device. The locking device mainly comprises an upper flat plate, a lower flat plate and a longitudinal plate, wherein the upper flat plate and the lower flat plate are arranged in parallel at intervals up and down, and the longitudinal plate is fixedly connected with the upper flat plate and the lower flat plate. In this patent, the upper plate and the lower plate are spaced one above the other, so that a nip or cavity is formed between the two. The height of the clamping groove is slightly higher than that of the angle steel, so that the clamping groove can be conveniently and smoothly and quickly clamped on the angle steel. One of the functions of the clamping groove is to contain the angle steel. For convenience of description, two plate surfaces forming the angle steel are defined, a horizontally arranged plate surface is defined as a transverse flat plate, a vertically arranged plate surface is defined as a longitudinal flat plate, a space semi-surrounded by the transverse flat plate and the longitudinal flat plate is defined as an inner cavity, one side semi-surrounded by the transverse flat plate and the longitudinal flat plate is defined as an inner side, and the other side is defined as an outer side. The locking device also comprises a pressing block, and the pressing block can be placed in the inner cavity of the angle steel. The pressing block is provided with a top wall which can be supported or in a pressing fit with the bottom surface of the angle steel transverse plate and a side wall which can be in a pressing fit with the inner side surface of the angle steel longitudinal plate. When the clamping groove is clamped on the angle steel, the pressing block can just slide into the inner cavity of the angle steel, so that the top wall of the pressing block is tightly matched with the transverse flat plate in a sticking mode, and the side wall of the pressing block is tightly matched with the longitudinal flat plate in a sticking mode.
The lower flat plate is provided with a lower hole, and a lower stud is inserted in the lower hole. The bottom of the pressing block is provided with a blind hole, the blind hole and the lower hole are arranged in a vertically corresponding mode, and the blind hole is in threaded connection with the upper portion of the lower stud. When the pressing block slides into the inner cavity of the angle steel, the lower stud can be screwed into the blind hole, and the pressing block is fixedly connected with the lower flat plate at the moment. Like this, the angle steel top receives the spacing of last flat board, and the below receives the spacing of lower flat board, indulges the flat board outside and receives the spacing of vertical board, indulges the flat inboard spacing that receives the compact heap. That is to say, the angle steel has all received limiting displacement in four directions about upper and lower, left and right, and from the direction of reaction, this locking device also receives the angle steel about, down, left and right four directions spacing, has guaranteed that this locking device fixes on the angle steel reliably.
The end part of the upper flat plate is provided with an upper hole, and an upper bolt is inserted in the upper hole. The lateral side of the upper part of the pressing block is fixedly provided with a transverse block, the transverse block extends outwards horizontally, and the transverse block and the end part of the upper flat plate are arranged up and down correspondingly. The transverse block is provided with a transverse hole, and the transverse hole and the upper hole are arranged in a vertically corresponding mode. When the compact heap slided into the angle steel inner chamber, can with in the bolt cartridge in proper order to go up hole and cross-bore and screw up, the cross-block just so is in the same place through last bolt and last dull and stereotyped rigid coupling, also is exactly that the compact heap is fixed together with last flat board. Under the prerequisite that the compact heap has been in the same place with lower dull and stereotyped fixed connection, the compact heap is in the same place with last dull and stereotyped fixed connection again, makes this locking device form a complete full enclosure structure. Like this, the angle steel top receives the spacing of last flat board, and the below receives the spacing of lower flat board, indulges the flat board outside and receives the spacing of vertical board, indulges the flat inboard spacing that receives the compact heap. That is to say, the angle steel has all received limiting displacement in four directions about upper and lower, left and right, and from the direction of reaction, this locking device also receives the angle steel about, down, left and right four directions spacing, has guaranteed that this locking device fixes on the angle steel reliably.
Because lower double-screw bolt and last bolt all have locking limiting displacement to the compact heap, consequently this locking device in use even have one in lower double-screw bolt and the last bolt because wind blows vibrations or other reasons and become flexible and even drop, also can guarantee that the compact heap can cartridge reliably in the inner chamber of angle steel, has also guaranteed reliability and life in the use of this patent.
The pressing block comprises a main block 43 and a wedge-shaped block 44 with a right-angled triangle outer contour, the blind hole is formed in the bottom of the main block, and an inclined surface 46 in sliding fit with a bevel edge surface 45 of the wedge-shaped block is arranged on the portion, close to the angle steel, of the bottom of the main block.
In this patent, the compact heap adopts sliding fit's two body structures, main piece and wedge. The wedge-shaped block is characterized in that the outline shape of the wedge-shaped block is a right triangle, for convenience of description, the side walls corresponding to two right-angle sides of the right triangle in the wedge-shaped block are respectively called a straight bottom wall matched with the lower flat plate and a straight side wall matched with the longitudinal flat plate, and the side walls corresponding to the hypotenuse of the triangle in the wedge-shaped block are called oblique side walls or hypotenuse faces. An inclined plane is arranged between the bottom surface of the main block and the side surface close to the longitudinal flat plate, the inclined plane is consistent with the inclined angle of the inclined edge surface of the wedge block when the bottom surface of the main block is tightly attached to the lower flat plate, and the length of the inclined edge of the wedge block is slightly longer than that of the inclined edge of the compression block. Set up like this, can guarantee that the bottom surface of master block can be higher than the straight diapire of wedge a little when the side of vertical flat board and the straight lateral wall parallel and level of wedge are pressed close to the master block, that is to say, can have a little clearance between master block bottom surface and the lower flat top surface. The blind hole that compact heap bottom set up sets up on main piece bottom surface, therefore, down the double-screw bolt can exert decurrent pulling force to main piece through this blind hole. The clearance provides the gliding space for the main block receives when the pulling force down along wedge hypotenuse face gliding, perhaps says so, for the wedge under the main block gliding power down to indulge dull and stereotyped the removal and compress tightly the board and provide and compress tightly the space, just so realized turning into the conversion function to wedge horizontal migration thrust to the vertical decurrent pulling force of main block, just also made the compact heap play the effect that compresses tightly the angle steel indulge dull and stereotyped, guaranteed the reliability of this patent fastening on the angle steel.
The inclined surface 46 is provided with a sliding groove 47 extending along the longitudinal direction of the inclined surface, the groove wall 48 of the sliding groove is provided with a slideway 49 extending along the length direction of the sliding groove, the inclined side surface of the wedge-shaped block is fixedly provided with a sliding plate 50 extending along the longitudinal direction of the inclined side surface, the sliding plate is in sliding fit with the sliding groove, and the middle part of the sliding plate is fixedly provided with a sliding block 51 in sliding fit with the slideway. The main block is provided with a sliding groove longitudinally extending along the inclined plane, and a sliding plate in sliding fit with the sliding groove is fixedly arranged on the inclined plane of the wedge block, so that the wedge block and the main block can be guided along the sliding direction of the inclined plane, and when the main block is pulled down by a lower stud, the wedge block can only vertically translate to the angle steel. The slide way extending along the slide way is arranged on the wall of the slide way, namely the slide way is in a long strip shape extending along the length direction of the slide way, the slide block which is inserted into the slide way and slides along the length direction of the slide way is fixedly arranged in the middle of the slide plate, the effect of limiting the relative sliding distance between the slide plate and the slide way can be achieved, the wedge-shaped block and the main block are connected together in a limiting way through the slide way and the slide block, and the effect that the wedge-shaped block and the main block can only slide along the slide. Therefore, when the wedge-shaped block is installed, an operator only needs to hold any one of the main block or the wedge-shaped block, the wedge-shaped block is more convenient to carry, the defect that the wedge-shaped block is easy to fall in the operation process is overcome, and the construction efficiency is improved.

Claims (5)

1. A lifting assistor special for an electric power tower is characterized by comprising a base (1), wherein a locking device (2) for locking the base (1) on a beam at the lower part of the electric power tower is arranged on the base (1), a thick round pipe (3) is transversely and vertically fixed on the base, a hoisting rope (4) is wound on the round pipe, the lifting assistor also comprises a pulley (5) which is wound on the upper section of the hoisting rope and is in transmission fit with the hoisting rope, a locking device (2) for locking the pulley on the beam at the upper part of the electric power tower is also fixedly arranged at the upper end of the pulley (5), an outer locking shaft (6) is transversely and vertically fixed on the base (1), a locking sleeve (7) is rotatably sleeved on the outer locking shaft, an outer locking device (8) capable of tightly pressing the hoisting rope on the periphery of the round pipe is arranged on the locking sleeve, a coaxially arranged inner locking shaft (9) is also transversely and vertically fixed on the, the rotary table (11) and the round pipe are provided with an inner locking device (12) for locking the hoisting rope on the round pipe; the outer locking device (8) comprises an outer locking cover (13) fixedly arranged on one side of the locking sleeve, the outer locking cover is an arc plate which is covered on the outer side of the circular pipe in a half-buckling manner, an arc-shaped channel (14) through which a hoisting rope passes is arranged between the inner wall of the outer locking cover and the outer wall of the circular pipe, the other side of the locking sleeve is fixedly provided with a pull ring (16) through a lever (15), and the pull ring (16) is connected with a pedal ring (18) through a pull rope (17); the inner wall of the outer locking cover is uniformly provided with locking grooves (19) which are coaxial with the circular tube, and rubber strips (20) are arranged in the locking grooves; the inner locking device (12) comprises a plurality of locking slideways (21) which are uniformly arranged on the circular tube in an annular mode and penetrate through the inside and the outside of the circular tube, locking plates (22) are inserted into the locking slideways, the inner ends of the locking plates are hinged to the periphery of the rotary table through annular shafts (23), linkage slideways (24) which penetrate through the inside and the outside of the circular tube are further arranged on the circular tube, linkage rods (25) are inserted into the linkage slideways, the inner ends of the linkage rods are hinged to the periphery of the rotary table through linkage shafts (26), the outer ends of the linkage rods are hinged to the inner wall of the outer locking cover through driving shafts (27), the outer edges of the locking plates sink into the locking slideways when the outer locking cover; the base (1) is provided with a conical hole and a conical strip hole, a conical bolt is inserted in the conical hole and the conical strip hole and can slide along the conical strip hole, the locking device is fixedly arranged at the end part of the conical bolt, the cross beam is an angle steel (30), the locking device comprises an upper flat plate (31) which is fixedly arranged at the bottom of the conical bolt and horizontally extends, a vertical plate (32) which extends downwards is vertically and fixedly arranged at the rear end of the upper flat plate (31), a lower flat plate (33) which is vertically and parallelly arranged with the upper flat plate (31) at an interval is fixedly arranged at the lower part of the vertical plate (32), a clamping groove (34) which is used for accommodating the angle steel (30) is formed between the upper flat plate (31) and the lower flat plate (33), a pressing block (35) which is in press fit with the inner wall of the angle steel (30) is also fixedly arranged in the clamping groove (34), the end part of the upper flat plate (31) is provided with an upper hole (, be equipped with on horizontal piece (37) with last hole (36) corresponding horizontal hole (38), locking has last bolt (39) between horizontal hole (38) and last hole (36), is equipped with down hole (40) on lower flat board (33), and compact heap (35) bottom is equipped with blind hole (41) with down hole (40) complex, and lower double-screw bolt (42) with blind hole (41) spiro union are equipped with in lower hole (40) interpolation.
2. The special lifting auxiliary device for the power tower as claimed in claim 1, wherein: the outer edge of the locking plate is wedge-shaped.
3. The special lifting auxiliary device for the power tower as claimed in claim 2, wherein: the lower section of the hoisting rope is sleeved with a conical rubber sleeve (28) with a thin upper end and a thick lower end, and a rope buckle (29) is tied on the hoisting rope below the conical rubber sleeve.
4. The power tower dedicated lifting aid of claim 3, wherein: the pressing block (35) comprises a main block (43) and a wedge-shaped block (44) with the outer contour being a right-angled triangle, the blind hole (41) is formed in the bottom of the main block (43), and an inclined surface (46) in sliding fit with a bevel edge surface (45) of the wedge-shaped block (44) is arranged on the portion, close to the angle steel (30), of the bottom of the main block (43).
5. The power tower dedicated lifting aid of claim 4, wherein: the inclined plane (46) is provided with a sliding groove (47) which longitudinally extends along the inclined plane (46), the groove wall (48) of the sliding groove (47) is provided with a sliding rail (49) which longitudinally extends along the sliding groove (47), the inclined plane (45) of the wedge-shaped block (44) is fixedly provided with a sliding plate (50) which longitudinally extends along the inclined plane (45), the sliding plate (50) is in sliding fit with the sliding groove (47), and the middle part of the sliding plate (50) is fixedly provided with a sliding block (51) which is in sliding fit with the sliding rail (49).
CN201611009151.9A 2016-11-16 2016-11-16 Special lifting auxiliary device for power tower Active CN108075387B (en)

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