CN216530221U - Multi-tower type universal overhead ground wire lifting device - Google Patents
Multi-tower type universal overhead ground wire lifting device Download PDFInfo
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- CN216530221U CN216530221U CN202122710460.1U CN202122710460U CN216530221U CN 216530221 U CN216530221 U CN 216530221U CN 202122710460 U CN202122710460 U CN 202122710460U CN 216530221 U CN216530221 U CN 216530221U
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Abstract
The utility model discloses a multi-tower universal overhead ground wire lifting device which comprises a base (1), two groups of screw rod assemblies (2), two groups of locking assemblies (3) and two groups of ground wire connecting assemblies (4), wherein the two groups of screw rod assemblies (2), the two groups of locking assemblies (3) and the two groups of ground wire connecting assemblies (4) are respectively arranged, the two groups of screw rod assemblies (2) are in threaded connection with two sides of the base (1) in the length direction, the bottom of each screw rod assembly (2) is movably connected with the corresponding ground wire connecting assembly (4), two through grooves (1-1) are formed in the base (1) in the length direction, the two groups of locking assemblies (3) respectively penetrate through and are limited in the two through grooves (1-1), and the two groups of locking assemblies (3) and the two groups of screw rod assemblies (2) are parallel to each other.
Description
Technical Field
The utility model belongs to the technical field of power line maintenance equipment, and particularly relates to a multi-tower universal overhead ground wire lifting device.
Background
With the continuous development of society, the demand of modern industrial production and people's daily life on power supply is increasing day by day, and high voltage overhead transmission line is as the important equipment of power transmission, and the steady operation of whole big electric wire netting is related to the timely elimination of various defect hidden dangers of pole tower. Among transmission tower body class defect, to the multiple defect of overhead earth wire hanging point position, need shift the pulling force of hanging point department to hoisting device with supporting overhead earth wire hoisting device earlier when the operation on, keep hanging and overhaul the operation again under the condition that the point is not atress, as the indispensable operation instrument of this kind of maintenance work, technical index such as portability, practicality, easy operability, commonality, stability of overhead earth wire hoisting device itself will direct influence activity time and operating quality.
In the overhead ground wire type maintenance operation, the operation position has a small range of motion, only one to two persons can carry out maintenance operation, and the ground wire support has a simple structure, stress points are difficult to select, and potential safety hazards exist. The overhead ground wire of the power transmission line is generally lifted by the following two methods in daily work:
(1) the hand-operated hoist operation method comprises the following steps: the hand-operated hoist is hung on the ground wire cross arm, one end of the steel wire rope is fixed on the overhead ground wire, the other end of the steel wire rope is connected with the hand-operated hoist, and the ground wire is lifted manually.
(2) The operation method of the wire tightener comprises the following steps: the operator fixes the two wire clamps with suitable wire diameter on the two sides of the hanging point, and then the double-hook wire grip is used for connecting the left wire clamp and the right wire clamp respectively, so as to achieve the purpose of lifting the overhead ground wire by tightening the wire grip.
(3) A conventional overhead ground wire lifting device is used for lifting a ground wire to overhaul a power transmission line.
But hand calabash bulky weight is heavy, and from taking chain length overlength, and in the in-service use process, because the space on the ground wire cross arm is narrow and small, the volume and the weight of hand calabash self can make the operation personnel operate more difficultly, and the staff that hand calabash needs is many moreover, wastes time and energy, and maintenance efficiency is not high, in the upper and lower transmission process, has the chain overlap joint electrified line and arouses potential safety hazards such as tripping operation and electric shock. The staff that double-hook turn-buckle method needs is many, the suitability is not strong, the procedure is complicated, waste time and energy, and maintenance efficiency is not high, need look up the shaft tower data before the operation at every turn and acquire information such as ground wire line footpath in order to prepare the fixing-line device that corresponds the model in advance, the hidden danger that the fixing-line device is improper to exist in the operation in the use, the double-hook turn-buckle operating personnel physical power consumption is big when tightening up, rotatory hank rod causes bodily injury to operating personnel easily, there is certain operation risk. The conventional overhead ground wire lifting device is not beneficial to field application due to the fact that the structure is complex, the hook is easy to unhook, and the installation is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a multi-tower type universal overhead ground wire lifting device.
In order to solve the technical problem, the technical scheme of the utility model is as follows: the utility model provides a general formula overhead earth wire hoisting device of many towers type, includes base, lead screw assembly, locking Assembly and ground wire coupling assembling are two sets of respectively, and two sets of lead screw assembly threaded connection are in base length direction both sides, lead screw assembly bottom swing joint ground wire coupling assembling, the base has been seted up two sections and has been link up the groove along length direction, and two sets of locking Assembly pass respectively and spacing in two sections link up inslot to two sets of locking Assembly are parallel to each other with two sets of lead screw assemblies.
Preferably, the base is of a cuboid structure, threaded holes are formed in the two sides of the base along the length direction, the screw rod assembly penetrates through the threaded holes and is in threaded connection with the threaded holes, two sections of through grooves are formed in the base between the threaded holes along the length direction, and the two sections of through grooves are not communicated.
Preferably, the base is an inverted trapezoid structure, threaded holes are formed in two sides of the base of the inverted trapezoid structure along the length direction, and the threaded holes are formed in the notches of the inverted trapezoid structure.
Preferably, the base is provided with a U-shaped groove, the U-shaped groove is communicated with the threaded hole, the axis of the U-shaped groove is perpendicular to the axis of the U-shaped groove, a screw rod is arranged in the U-shaped groove, and the screw rod is matched with the internal thread of the U-shaped groove to axially limit the screw rod assembly.
Preferably, the screw assembly comprises a screw and a rocking handle, one end of the screw is fixedly connected with the rocking handle, and the other end of the screw is movably connected with the ground wire connecting assembly.
Preferably, the ground wire connecting assembly comprises a high-strength bolt, a ground wire connecting piece and a connecting hole position piece, the top of the connecting hole position piece is movably connected with the lead screw, the high-strength bolt penetrates through a connecting hole in the bottom of the connecting hole position piece and is fixed to the connecting hole position piece, and the ground wire connecting piece penetrates through the high-strength bolt.
Preferably, the ground wire connecting piece is an endless rope loop or a locked bearing retaining ring.
Preferably, the locking assembly comprises a butterfly screw, a bolt rod and a right-angle hook screw, the bolt rod penetrates through the through groove, one end of the bolt rod is in threaded connection with the butterfly screw, the other end of the bolt rod is perpendicularly and fixedly connected with the right-angle hook screw, and the butterfly screw and the right-angle hook screw are larger than the through groove in width.
Preferably, the surface of the right-angle hook screw is provided with an anti-skid groove.
Compared with the prior art, the utility model has the advantages that:
(1) the utility model provides a multi-tower universal overhead ground wire lifting device, which abandons the tightening mode of the traditional chain and steel wire tightener, adopts the mode of tightening the lead screw, greatly reduces the volume and the weight of the whole set of tools and tools, and reduces the operation burden of high-altitude operation personnel and ground service personnel; compared with the traditional wire tightener, the screw rod is more stable and labor-saving in tightening process and high in safety factor;
(2) the base is designed aiming at various tower types, can be suitable for common operation environments such as back-to-back angle iron and steel pipe pole integrated cross arms and the like, forms stable connection with a tower main material through the base and a locking assembly, utilizes a lead screw to lift a ground wire, establishes a reasonable stress structure, and greatly increases the application range and flexibility of the device;
(3) the connection of the lower end of the lead screw component and the overhead ground wire adopts a connection mode of matching the connection hole position piece, the high-strength bolt and the bearing retaining ring (or the endless rope sleeve), so that the structure of the whole tool is simplified, the burden of high-altitude operation personnel and ground service personnel is reduced, meanwhile, the connection mode of the high-strength bolt and the bearing retaining ring (or the endless rope sleeve) has no unhooking condition, the field application is facilitated, and the safety coefficient of the device is increased.
Drawings
Fig. 1 is a schematic structural diagram of a multi-tower type universal overhead ground wire lifting device.
Description of reference numerals:
1. the device comprises a base, 2, a lead screw assembly, 3, a locking assembly, 4 and a ground wire connecting assembly;
1-1 part of a through groove, 1-2 parts of a threaded hole, 1-3 parts of a U-shaped groove, 1-4 parts of a screw rod;
2-1 parts of a screw rod, 2-2 parts of a rocking handle;
3-1 parts of butterfly screws, 3-2 parts of bolt rods, 3-3 parts of right-angle hook screws, 3-3-1 parts of anti-skidding grooves;
4-1 parts of high-strength bolts, 4-2 parts of ground wire connecting pieces, 4-3 parts of connecting hole position pieces.
Detailed Description
The following describes embodiments of the present invention with reference to examples:
it should be noted that the structures, proportions, sizes, and other elements shown in the specification are included for the purpose of understanding and reading only, and are not intended to limit the scope of the utility model, which is defined by the claims, and any modifications of the structures, changes in the proportions and adjustments of the sizes, without affecting the efficacy and attainment of the same.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Example 1
As shown in fig. 1, the utility model discloses a multi-tower universal overhead ground wire lifting device, which comprises a base 1, two lead screw assemblies 2, two locking assemblies 3 and two ground wire connecting assemblies 4, wherein the two lead screw assemblies 2, the two locking assemblies 3 and the two ground wire connecting assemblies 4 are respectively provided with two groups, the two lead screw assemblies 2 are in threaded connection with two sides of the base 1 in the length direction, the bottom of each lead screw assembly 2 is movably connected with the corresponding ground wire connecting assembly 4, the base 1 is provided with two through grooves 1-1 in the length direction, the two locking assemblies 3 respectively penetrate through and are limited in the two through grooves 1-1, and the two locking assemblies 3 and the two lead screw assemblies 2 are parallel to each other.
Example 2
As shown in fig. 1, preferably, the base 1 is a cuboid structure, threaded holes 1-2 are formed in two sides of the base 1 along the length direction, the screw rod assembly 2 penetrates through the threaded holes 1-2 and is in threaded connection with the threaded holes 1-2, two through grooves 1-1 are formed in the base 1 between the two threaded holes 1-2 along the length direction, and the two through grooves 1-1 are not communicated.
As shown in fig. 1, preferably, the base 1 has an inverted trapezoid structure, threaded holes 1-2 are formed in both sides of the base 1 along the length direction, and the threaded holes 1-2 are disposed at the notches of the inverted trapezoid structure.
The base 1 is provided with a U-shaped groove 1-3, wherein the U-shaped groove 1-3 is communicated with a threaded hole 1-2, the axis of the U-shaped groove is perpendicular to the axis of the U-shaped groove, a screw rod 1-4 is arranged in the U-shaped groove 1-3, and the screw rod 1-4 is matched with the internal thread of the U-shaped groove 1-3 to axially limit the screw rod assembly 2.
The base is used as an important component directly connected with a tower, the factors such as toughness, strength, wear resistance and the like of the material must be considered during design and material selection, relevant data are consulted, the selectable materials are mainly high-quality steel, alloy steel and high-strength aluminum-titanium alloy, and the performance analysis of the three materials is as follows:
(1) high-quality steel: the material is even, and intensity is high, and the quality is big, and the wearability is better.
(2) Alloy steel: the high-strength high-toughness high-strength steel has enough toughness, good weldability and small deformation resistance, and is not easy to crack after being subjected to pressure processing and has good corrosion resistance.
(3) Aluminum-titanium alloy: the steel has light weight, density about 1/3 of steel, high strength, good processing performance, corrosion resistance and other features.
Because the cost is lower, high-quality steel and alloy steel are widely applied in practice. Although the aluminum-titanium alloy has higher manufacturing cost, the aluminum-titanium alloy has multiple advantages in the aspects of strength, plasticity, hardness, impact toughness and the like, and can meet the requirement of safety production in the power industry. Therefore, the base 1 of the overhead ground wire lifting device is made of aluminum-titanium alloy.
In order to make the base be suitable for the current mainstream tower type as much as possible, the base is in a cuboid structure with the length of 50cm and the width and the height of 5cm respectively, U-shaped grooves 1-3 are formed in the side of stress surfaces at two ends and used for fixing a lead screw component 2, and the thickness and the mechanical strength of the aluminum-titanium alloy in the stress direction are guaranteed.
The two through grooves 1-1 are 1cm wide and 10cm long, are symmetrically distributed on the left side and the right side of the base 1, the locking assemblies 3 in the grooves can be adjusted left and right, and the base 1 can be fixed on the ground wire support by adjusting the left locking assembly 3 and the right locking assembly 3 when the ground wire support is used.
Example 3
As shown in fig. 1, preferably, the lead screw assembly 2 includes a lead screw 2-1 and a rocking handle 2-2, one end of the lead screw 2-1 is fixedly connected with the rocking handle 2-2, and the other end of the lead screw 2-1 is movably connected with a ground wire connecting assembly 4.
The lead screw is an SSG 30-III lead screw, the rated load is 29.4KN, the lead screw stroke is 341-536 mm, the stroke and load requirements can meet the design requirements, the bottom of the lead screw is in soft connection with an overhead ground wire by using a high-strength bolt, a connecting hole position part and a bearing retaining ring (or an endless rope sleeve), and abrasion is avoided in the lifting process.
Utilize the lead screw to replace the mode of tightening up of traditional steel wire turn-buckle, when reaching same operation purpose, alleviate operation intensity, simplify the operation step, promoted whole operation factor of safety simultaneously.
As shown in fig. 1, preferably, the ground wire connecting assembly 4 includes a high-strength bolt 4-1, a ground wire connecting member 4-2 and a connecting hole position member 4-3, the top of the connecting hole position member 4-3 is movably connected with the screw rod 2-1, the high-strength bolt 4-1 penetrates through the connecting hole at the bottom of the connecting hole position member 4-3 and is fixed on the connecting hole position member 4-3, and the ground wire connecting member 4-2 penetrates through the high-strength bolt 4-1.
The top of the connecting hole position part 4-3 is rotatably connected with the bottom of the screw rod 2-1, after the ground wire connecting part 4-2 is connected with a ground wire, the screw rod 2-1 rotates, and the ground wire connecting part 4-2 does not rotate along with the rotation.
As shown in fig. 1, preferably, the ground wire connecting piece 4-2 is an endless loop or a lockable force-bearing buckle.
The hard connection mode of the wire clamping device is replaced by the soft connection mode of the high-strength bolt 4-1, the ground wire connecting piece 4-2 and the connecting hole position piece 4-3, the overhead ground wire is prevented from being worn due to rigid connection stress, and meanwhile, the connection mode of the high-strength bolt and the bearing retaining ring (or the electrodeless rope sleeve) fundamentally solves the problem that different wire clamping devices need to be selected according to the wire diameter models of the ground wires before operation.
Example 4
As shown in fig. 1, preferably, the locking assembly 3 comprises a butterfly screw 3-1, a bolt rod 3-2 and a right-angle hook screw 3-3, the bolt rod 3-2 passes through the through groove 1-1, one end of the bolt rod 3-2 is in threaded connection with the butterfly screw 3-1, the other end of the bolt rod 3-2 is vertically and fixedly connected with the right-angle hook screw 3-3, and the butterfly screw 3-1 and the right-angle hook screw 3-3 are larger than the width of the through groove 1-1.
The surface of the right-angle hook screw 3-3 is provided with an anti-skid groove 3-3-1.
The ground wire connecting piece 4-2 and the right-angle hook screw 3-3 are arranged on the same side of the base 1.
The upper end of the bolt rod 3-2 is screwed up through a butterfly screw 3-1, and an anti-slip groove 3-3-1 is designed at the joint of the lower end and the tower material, so that the tower material can be effectively prevented from being separated from a fixed position in the operation process and is used for clamping the tower materials with different widths, and the firmness of the whole device can be improved.
The working principle of the utility model is as follows:
as shown in figure 1, the utility model provides a multi-tower universal overhead ground wire lifting device, which comprises a base 1, a screw rod assembly 2, a locking assembly 3 and a ground wire connecting assembly 4, wherein the base 1 is mainly used for fixing lifting hanging points and is matched with ground wire lifting, the base 1 is designed aiming at various tower types and can be suitable for common operating environments such as back-to-back angle steel and steel pipe rod integrated cross arms, when in use, the base 1 can be fixed at operating positions with different widths by adjusting the distance between a left right-angle hook screw 3 and a right-angle hook screw 3-3, the fixing mode is convenient and reliable and completely suitable for a single hanging point lifting mode, the screw rod 2-1 is mainly used for transferring the load borne by a ground wire hardware fitting to complete the lifting work of the whole ground wire, the soft connection of a high-strength bolt 4-1, a ground wire connecting piece 4-2 and a connecting hole position piece 4-3 is mainly used for connecting the lower end of the screw rod 2-1 with the overhead ground wire, the risk that the ground wire and the connecting hardware are damaged secondarily in the lifting process is reduced.
The operation flow of the utility model is as follows:
(1) an operator on the tower ascends the tower to a designated operation position through an insulated transmission rope and ties a safety belt;
(2) ground personnel transfer the ground wire lifting device to the tower through the transfer rope, and operators on the tower install the base 1 of the ground wire lifting device at proper positions to ensure that the two right-angle hook screws 3-3 are screwed and fixed, and the endless rope sleeves at the bottom ends of the two lead screws or the endless bearing retaining rings with locking type are firmly and reliably connected with the ground wire;
(3) an operator on the tower rotates the rocking handle 2-2 to tighten the two lead screws 2-1 at the same time, the lead screws 2-1 rotate, and the endless rope loop or the locked bearing retaining ring does not rotate along with the rotation, so that the weight of the ground wire is transferred to the ground wire lifting device;
(4) after the screw rod 2-1 is tightened, the operating personnel on the tower carries out defect elimination or other maintenance work;
(5) after the operation personnel on the tower finishes the defect elimination or other maintenance work, the ground wire lifting device is dismantled;
(6) and (5) after the operator checks that no error exists, the operator goes down the tower and cleans the operation site.
The safety test of the utility model is as follows:
in order to test the safety performance of the device, a dynamic load test is carried out according to the preventive test regulations of electric power safety tools and small-sized construction machines: the ground wire lifting device operates for 3 times under the rated working load of 1.5 times, is flexible to operate and has no pause phenomenon; carrying out a static load test: the device bears the weight of the ground wire for 5min under the allowable working load of 2.5 times, and the tool and the device have no deformation and damage.
The benefit analysis of the utility model is as follows:
economic benefits are as follows: the application of the ground wire lifting device simplifies the maintenance operation procedure of the overhead ground wire. In daily ground wire maintenance operation, only need an operation personnel can accomplish work in ground wire cross arm position on the tower, compare when using traditional instrument maintenance operation, work efficiency has had great promotion, and the average activity duration is reduced to 40min from traditional 80min, and ground wire lifting process only needs ten minutes. The number of workers is reduced from 6 workers needed in the traditional maintenance mode to 4 workers, and the per-capita work efficiency is greatly improved.
Social benefits are as follows: the ground wire lifting device is applied, so that the overhead ground wire maintenance operation which is high in risk, complex in process and long in operation time originally is updated into an operation method which is low in risk, simple in process, short in time consumption, greatly reduces operation intensity, shortens operation time, and avoids economic loss and adverse effect caused by large-area power failure due to tripping of a power transmission line caused by ground wire faults.
The working efficiency of the conventional working method and the ground wire lifting device using the utility model is shown in table 1:
TABLE 1 comparison of work efficiency
| Comparing items | Improved ground wire lifting device | Traditional ground wire lifting device |
| Weight of tool | 6kg | 20kg |
| Number of working persons and division of |
2 ground services and 1 power on |
3 electricians on ground and 2 electricians on tower |
| Procedure for the preparation of the | 4 items | Item 6 |
| Duration of operation | 40min | 80min |
| Intensity of labour | Easy to use | Is more strenuous |
The utility model provides a multi-tower universal overhead ground wire lifting device, which abandons the tightening mode of the traditional chain and steel wire tightener, adopts the mode of tightening the lead screw, greatly reduces the volume and the weight of the whole set of tools and tools, and reduces the operation burden of high-altitude operation personnel and ground service personnel; compared with a traditional wire tightener, the lead screw is more stable and labor-saving in tightening process and high in safety factor.
The base is designed aiming at various tower types, can be suitable for common operation environments such as back-to-back angle iron and steel pipe pole integrated cross arms, and the like, forms stable connection with a tower main material through the base and the locking assembly, utilizes the lead screw to lift the ground wire, establishes a reasonable stress structure, and greatly increases the application range and flexibility of the device.
The connection of the lower end of the lead screw component and the overhead ground wire adopts a connection mode of matching the connection hole position piece, the high-strength bolt and the bearing retaining ring (or the endless rope sleeve), so that the structure of the whole tool is simplified, the burden of high-altitude operation personnel and ground service personnel is reduced, meanwhile, the connection mode of the high-strength bolt and the bearing retaining ring (or the endless rope sleeve) has no unhooking condition, the field application is facilitated, and the safety coefficient of the device is increased.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The utility model provides a general formula overhead earth wire hoisting device of many towers type which characterized in that: including base (1), lead screw component (2), locking Assembly (3) and ground wire coupling assembling (4) are two sets of respectively, and two sets of lead screw component (2) threaded connection are in base (1) length direction both sides, lead screw component (2) bottom swing joint ground wire coupling assembling (4), base (1) has seted up two sections along length direction and has link up groove (1-1), and two sets of locking Assembly (3) pass respectively and are spacing in two sections link up groove (1-1) to two sets of locking Assembly (3) are parallel to each other with two sets of lead screw component (2).
2. A multi-tower universal overhead earth wire hoisting device according to claim 1, characterized in that: the base (1) is of a cuboid structure, threaded holes (1-2) are formed in the two sides of the base (1) along the length direction, the lead screw assembly (2) penetrates through the threaded holes (1-2) and is in threaded connection with the threaded holes (1-2), two sections of through grooves (1-1) are formed in the base (1) between the two threaded holes (1-2) along the length direction, and the two sections of through grooves (1-1) are not communicated.
3. A multi-tower universal overhead earth wire hoisting device according to claim 1, characterized in that: the base (1) is of an inverted trapezoidal structure, threaded holes (1-2) are formed in two sides of the base (1) of the inverted trapezoidal structure in the length direction, and the threaded holes (1-2) are formed in the notches of the inverted trapezoidal structure.
4. A multi-tower universal overhead earth wire hoisting device according to claim 2, characterized in that: the base (1) is provided with a U-shaped groove (1-3), wherein the U-shaped groove (1-3) is communicated with the threaded hole (1-2) and the axis of the U-shaped groove is perpendicular to the axis of the threaded hole, a screw rod (1-4) is arranged in the U-shaped groove (1-3), and the screw rod (1-4) is matched with the internal thread of the U-shaped groove (1-3) to axially limit the screw rod assembly (2).
5. A multi-tower universal overhead earth wire hoisting device according to claim 1, characterized in that: the lead screw component (2) comprises a lead screw (2-1) and a rocking handle (2-2), one end of the lead screw (2-1) is fixedly connected with the rocking handle (2-2), and the other end of the lead screw (2-1) is movably connected with a ground wire connecting component (4).
6. A multi-tower universal overhead ground wire hoisting device according to claim 5, characterized in that: the ground wire connecting assembly (4) comprises a high-strength bolt (4-1), a ground wire connecting piece (4-2) and a connecting hole position piece (4-3), the top of the connecting hole position piece (4-3) is movably connected with the lead screw (2-1), the high-strength bolt (4-1) penetrates through the connecting hole in the bottom of the connecting hole position piece (4-3) and is fixed on the connecting hole position piece (4-3), and the ground wire connecting piece (4-2) penetrates through the high-strength bolt (4-1).
7. A multi-tower universal overhead earth wire hoisting device according to claim 6, characterized in that: the ground wire connecting piece (4-2) is an endless rope sleeve or a bearing retaining ring with a locking type.
8. A multi-tower universal overhead earth wire hoisting device according to claim 1, characterized in that: the locking assembly (3) comprises a butterfly screw (3-1), a bolt rod (3-2) and a right-angle hook screw (3-3), the bolt rod (3-2) penetrates through the through groove (1-1), one end of the bolt rod (3-2) is in threaded connection with the butterfly screw (3-1), the other end of the bolt rod (3-2) is vertically and fixedly connected with the right-angle hook screw (3-3), and the butterfly screw (3-1) and the right-angle hook screw (3-3) are larger than the width of the through groove (1-1).
9. A multi-tower universal overhead ground wire hoisting device according to claim 8, characterized in that: the surface of the right-angle hook screw (3-3) is provided with an anti-skid groove (3-3-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122710460.1U CN216530221U (en) | 2021-11-06 | 2021-11-06 | Multi-tower type universal overhead ground wire lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122710460.1U CN216530221U (en) | 2021-11-06 | 2021-11-06 | Multi-tower type universal overhead ground wire lifting device |
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| CN216530221U true CN216530221U (en) | 2022-05-13 |
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| CN202122710460.1U Active CN216530221U (en) | 2021-11-06 | 2021-11-06 | Multi-tower type universal overhead ground wire lifting device |
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