CN104074191A - Screw-in device for mounting and overhauling power transmission and transformation device - Google Patents
Screw-in device for mounting and overhauling power transmission and transformation device Download PDFInfo
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- CN104074191A CN104074191A CN201410293025.5A CN201410293025A CN104074191A CN 104074191 A CN104074191 A CN 104074191A CN 201410293025 A CN201410293025 A CN 201410293025A CN 104074191 A CN104074191 A CN 104074191A
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Abstract
The invention discloses a screw-in device for mounting and overhauling a power transmission and transformation device. The screw-in device comprises a bracket, a worm wheel arranged on the bracket, and a worm matched with the worm wheel to drive the worm wheel to rotate, wherein a bearing for supporting the worm wheel is arranged in the worm wheel; the worm wheel is provided with a hexagonal through hole matched with an outer hexagon on a ground anchor; one end of the worm is connected with a first safety shaft coupling for switching the power off in case of overload; the input end of the first safety shaft coupling is connected with a motor serving as an automatic power supply or a rotating handle serving as a manual power source. A worm and worm wheel mechanism is arranged on the bracket, the ground anchor is connected to the worm wheel, and the ground anchor is screwed into or out of the ground surface in a manual way or an electric way through the rotation of the worm wheel; a safety shaft coupling protection mechanism is mainly taken as an integral device for protecting in case of running overload; a direct-current motor is taken as the power source of the integral device. By adopting the screw-in device, a safe screw-in function is realized, the working efficiency is increased, and the working quality is improved.
Description
Technical field
The invention belongs to power system installation and maintenance technical field, be specifically related to a kind of screwing-in device of installing, overhauling for power transmission and transformation.
Background technology
Along with the development of transmission line of electricity electric power network, residential electricity consumption and industrial and mining enterprises' electricity consumption have become the primary part of electricity needs, power equipment, defeated, join, the work requirements such as the large and medium-sized power equipment such as power transformation engineering and line maintenance, maintenance increases day by day, the reliability requirement of power system electric fixtures is more and more higher.Power equipment, because the number of operations quantity of stopping sending a telegram in reply increases, likely causes power transmission engineering to be installed because of power off time long, and tired operation produces the negative effect of safety in production and personal injury.Therefore, in order to ensure installation, the construction quality of personnel's operation, operator scheme and the novel construction detection method of just necessary utilization science, guarantee personal safety and equipment reliability of operation, to can take in time to build supplementary measure when main force's device fails of operation of power networks and defect, thereby raising engineering time and equipment are in the fortune life-span.
In electric power transmission line construction, there is the length of pair new line apart from installation, have the installation of old circuit, used equipment is renovated, the manpower transport who usually runs in line level crossing construction and the special area of crossing over various obstructions operates construction.Of a great variety because of the obstruction that power circuit is crossed over, have various power circuits, connection, highway, railway, house etc., and crossover point complexity brings larger potential safety hazard to line level crossing construction, and job site earth anchor to bury work difficulty underground large.As the contingency occurring while constructing, may cause being had a power failure for a long time across power circuit, railway transportation is interrupted, and the serious personal hidden danger that even causes occurs.Therefore, be badly in need of a kind of safe precession instrument for precession earth anchor of development, can economize in the short period of time people labour-saving and carry out installation and maintenance and the maintenance work of various work.
Summary of the invention
The object of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of screwing-in device of installing, overhauling for power transmission and transformation is provided, this device can be converted to power capacity by mechanical energy effectively, and construction effect is specification relatively, has guaranteed running quality and has improved operating efficiency.
To achieve these goals, the technical solution adopted in the present invention is: comprise support and be installed on the worm gear on support, and drive the worm screw of worm gear rotation with worm wheel; In worm gear, be provided with the bearing for supporting worm gear, on worm gear, offer with earth anchor on the six square tube holes that match of outer six sides; One end of worm screw is connected with the first safety coupling that disconnects power in when overload, connects as the motor in automatic power source or as the rotary handle in manual power source on the input of the first safety coupling.
Described support comprises that top is for the platform of precession mechanism is installed, and the bottom of platform is provided with four supporting legs of some joint connected structures, and the lower end of supporting leg is connected with active legs and feet; Wherein, between supporting leg, be also provided with between two lateral frame, on lateral frame, be provided with the hanging ring for hanging pulley or annex.
Also comprise the conveying and the hoisting mechanism that are installed on support, conveying and hoisting mechanism comprise the wirerope-winding wheel for lay winding wire ropes, one end of wire rope is wrapped in wirerope-winding wheel above, and the other end is walked around to be arranged on electric pole and as suspension centre and obtained chain anchor ear, and lower end hangs and promotes object; The input of wirerope-winding wheel is connected with the output of gear-box, on the input of gear-box, be connected with the second safety coupling that disconnects power in when overload, on the input of the second safety coupling, connect as the motor in automatic power source or as the rotary handle in manual power source.
The end of described worm screw other end connecting rod is provided with the first connection and transmits gear, is provided with and makes first to be connected the first fork type shaft coupling that transmits gear connection or cut off power source on the first connecting rod connecting between transmission gear and worm screw; On connecting rod between gear-box output and the second safety coupling, be disposed with and gear-box be connected or disconnect the second fork type shaft coupling of power source and be connected the second connection transmission gear that transmits the normal engagement of gear with first.
In described gear-box, be provided with and prevent that wirerope-winding wheel from reversing, and make to promote object and can hover over the latch of any point in lift stroke.
One end of described chain anchor ear be fixed on win in succession as the link plate of suspension centre or bent angle upper, the other end be arranged on link plate or the bent angle anchor ear hook on winning in succession and be connected; On chain anchor ear, be arranged with rubber sleeve with the part of electric pole joint, rubber sleeve is rectangular configuration, and a pair of work plane of its inwall is provided with wear-resisting spring liner plate; Working platform is also installed on electric pole, and working platform is fixed on electric pole by link plate and chain anchor ear, and on working platform, is provided with some links.
Described earth anchor is hollow structure, and on earth anchor, is provided with vane; The lower end of earth anchor and the side of bottom offer respectively the through hole communicating with internal cavity; The inside and outside screw thread that all offers on the top of earth anchor.
The top of described earth anchor is connected with link, and link is connected on the internal thread on earth anchor top, and the below of link is provided with connection link plate; Connect on link plate and be provided with some connecting bolts for connecting the hanging point bolt of bottom line and matching with the set screw thread in earth anchor top.
The upper end of described earth anchor is also connected with the ground anchor pole for increasing earth anchor working depth; The inside and outside screw thread that all offers at anchor pole two ends, ground, and ground anchor pole is connected with earth anchor by Spiralism type earth anchor connecting ring or full screw thread bolt.
Compared with prior art, the present invention has following beneficial effect:
The present invention is by worm-and-wheel gear is installed on support, then earth anchor is connected on worm gear, and the rotation by worm gear is by earth anchor precession or screw out ground use, and precession or back-out have manually and electronic two kinds of modes; Safety coupling protection mechanism is mainly to shield in the time that operation overloads when single unit system; 24V direct current generator is the power source of single unit system.Screwing-in device of the present invention has been realized safe precession function, has improved operating efficiency and work quality.
Further, the present invention is also provided with the conveying that is connected with screwing-in device and hoisting mechanism and mainly bears lifting and the dismounting of power equipment, gold utensil on support, sues and labours etc.; Meanwhile, be also provided with the multi-function chain type anchor ear of the work that matches with conveying and hoisting mechanism, multi-function chain type anchor ear is mainly on convenient pole, to install fixed support on suspension centre and bar to use.Precession mechanism of the present invention and conveying and hoisting mechanism and the chain anchor ear and the working platform that are arranged on electric pole form an organic whole, have realized the several functions of conveying, lifting and precession, have further improved operating efficiency and work quality.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the overall structure schematic diagram of support of the present invention;
Fig. 3 is the lateral view of precession of the present invention mechanism;
Fig. 4 is the top view of precession mechanism of the present invention and conveying and hoisting mechanism;
Fig. 5 is the structural representation of earth anchor of the present invention;
Fig. 6 is the structural representation of earth anchor bottom vane of the present invention and through hole;
Fig. 7 is the structural representation of the present invention ground anchor pole;
Fig. 8 is the annexation schematic diagram of the present invention's ground anchor pole and earth anchor;
Fig. 9 is the structural representation of Spiralism type earth anchor connecting ring of the present invention;
Figure 10 is the structural representation that the present invention connects link plate;
Figure 11 is the annexation schematic diagram of chain anchor ear of the present invention and link plate;
Figure 12 is the structural representation of anchor ear hook of the present invention;
Figure 13 is the structural representation of rubber sleeve of the present invention;
Figure 14 is the annexation schematic diagram that chain anchor ear of the present invention and bent angle are won in succession;
Figure 15 is the structural representation of working platform of the present invention;
Figure 16 is the front view of chain anchor ear of the present invention;
Figure 17 is the top view of chain anchor ear of the present invention.
Wherein, 1 is support; 2 is earth anchor; 3 is chain anchor ear; 4 is working platform; 5 for promoting object; 6 is platform; 7 is supporting leg; 8 is active legs and feet; 9 is lateral frame; 10 is hanging ring; 11 is worm gear; 12 is worm screw; 13 is bearing; 14 is the first safety coupling; 15 is wirerope-winding wheel; 16 is gear-box; 17 is the second safety coupling; 18 is that gear is transmitted in the first connection; 19 is the first fork type shaft coupling; 20 is the second fork type shaft coupling; 21 is that gear is transmitted in the second connection; 22 is latch; 23 is vane; 24 is through hole; 25 is link; 26 for connecting link plate; 27 is hanging point bolt; 28 is connecting bolt; 29 is ground anchor pole; 30 is Spiralism type earth anchor connecting ring; 31 is full screw thread bolt; 32 is link plate; 33 win in succession for bent angle; 34 is anchor ear hook; 35 is rubber sleeve; 36 is wear-resisting spring liner plate.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described in detail:
Referring to Fig. 1, the present invention includes precession mechanism, conveying and the hoisting mechanism being installed on support 1 and be all installed on chain anchor ear 3 and the working platform 4 on electric pole; Earth anchor 2 is installed on the output of precession mechanism; The power intake of precession mechanism and conveying and hoisting mechanism is all connected with motor or rotary handle; Precession mechanism is connected by the transmission gear that is connected separately with hoisting mechanism with conveying; On conveying and hoisting mechanism, be provided with the wirerope-winding wheel 15 for lay winding wire ropes, one end of wire rope is wrapped on wirerope-winding wheel 15, and the other end is walked around as suspension centre chain anchor ear 3, and lower end hangs and promotes object 5.One end of chain anchor ear 3 is fixed on as the link plate 32 of suspension centre or bent angle and wins in succession on 33, the other end be arranged on the anchor ear hook 34 that link plate 32 or bent angle win in succession on 33 and be connected; On chain anchor ear 3, be arranged with rubber sleeve 35 with the part of electric pole joint, rubber sleeve 35 is rectangular configuration, and a pair of work plane of its inwall is provided with wear-resisting spring liner plate 36; Working platform 4 is fixed on electric pole by link plate 32 and chain anchor ear 3, and is provided with some links on working platform 4.
Earth anchor 2 is hollow structure, and on earth anchor 2, is provided with vane 23; The lower end of earth anchor 2 and the side of bottom offer respectively the through hole 24 communicating with internal cavity; The inside and outside screw thread that all offers on the top of earth anchor 2.The top of earth anchor 2 is connected with link 25, and link 25 is connected on the internal thread on earth anchor 2 tops, and the below of link 25 is provided with and connects link plate 26; Connect on link plate 26 and be provided with some connecting bolts 28 for connecting the hanging point bolt 27 of bottom line and matching with the earth anchor 2 set screw threads in top.The upper end of earth anchor 2 is also connected with the ground anchor pole 29 for increasing earth anchor 2 working depth; The inside and outside screw thread that all offers at anchor pole 29 two ends, ground, and ground anchor pole 29 is connected with earth anchor 2 by Spiralism type earth anchor connecting ring 30 or full screw thread bolt 31.
Support comprises that top is for installing the platform 6 of precession mechanism and conveying and hoisting mechanism, and the bottom of platform 6 is provided with four supporting legs 7 of some joint connected structures, and the lower end of supporting leg 7 is connected with active legs and feet 8; Wherein, between supporting leg 7, be also provided with between two lateral frame 9, on lateral frame 9, be provided with the hanging ring 10 for hanging pulley or annex.Precession mechanism comprises the worm gear 11 being installed on support 1, and the worm screw 12 that drives worm gear 11 to rotate of matching with worm gear 11; In worm gear 11, be provided with the bearing 13 for supporting worm gear 11, on worm gear 11, offer with earth anchor 2 on the six square tube holes that match of outer six sides; One end of worm screw 12 is connected with and on when overload disconnects the input of the first safety coupling 14, the first safety couplings 14 of power, connects as the motor in automatic power source or as the rotary handle in manual power source.Conveying and hoisting mechanism comprise wirerope-winding wheel 15, the input of wirerope-winding wheel 15 is connected with the output of gear-box 16, on the input of gear-box 16, be connected with and on when overload disconnects the input of the second safety coupling 17, the second safety couplings 17 of power, connect as the motor in automatic power source or as the rotary handle in manual power source.The end of worm screw 12 other end connecting rods is provided with on the connecting rod between the first connection transmission gear 18, the first connection transmission gears 18 and worm screw 12 and is provided with and makes first to be connected the first fork type shaft coupling 19 that transmission gear 18 connects or cut off power source; On connecting rod between gear-box 16 outputs and the second safety coupling 17, be disposed with and gear-box 16 be connected or disconnect the second fork type shaft coupling 20 of power source and be connected the second connection transmission gear 21 that transmits gear 18 normal engagements with first.In gear-box 16, be provided with and prevent that wirerope-winding wheel 15 from reversing, and make to promote object and can hover over the latch 22 of any point in lift stroke.
Principle of the present invention:
Referring to Fig. 1, the present invention is made up of support 1, earth anchor 2, precession mechanism, conveying and hoisting mechanism, direct current generator (24V), steel-ball type torque force limiting device (the first safety coupling 14 and the second safety coupling 17), rotary handle.Rotate when direct current generator (24V) drives the worm screw of precession mechanism, worm drive worm gear rotarily drives multi-functional earth anchor and rotates, and multi-functional earth anchor screws in automatic soil under the effect of self vane.While running into larger resistance as this device, the first shaft coupling 14 starts disconnection direct current generator (24V), and device quits work, and protective device is not damaged, and when direct current generator (24V) is changed into rotary handle, can realize earth anchor and manually screw in.In the time that worm screw is rotated, transmit gear train by connection and drive conveying and hoisting mechanism work simultaneously.In addition, when direct current generator (24V) is changed to activation point, change to and carry and hoisting mechanism input, transmit gear train by connection and also can realize precession mechanism and conveying and hoisting mechanism work, this duty is by the fork type shaft coupling position of adjusting device, can realize two mechanisms and work simultaneously or work independently, also can realize and use manual operation.On conveying and hoisting mechanism input axle, be also provided with steel-ball type torque force limiting device (safety coupling), protect whole device.
For the career field of expanding device, be also provided with working platform two mechanisms on multi-function chain type anchor ear and bar, convenient for laying suspension centre and safe operation platform on electric pole.Integrated model has good reliability, operability, stability, and range of application is very extensive.
As shown in Figure 2, single unit system is installed in the effect of platform 6 of the present invention, and supporting leg 7 entirety adopt three joint connected structures, laterally fixing with bolt, object is convenient in the work of special area employing height leg, can also obtain maximum support power (utilizing inclined-plane self-lock mechanism); Active legs and feet 8 can make support firm, are connected with supporting leg by screw thread; Support entirety is firm for lateral frame 9; Hanging ring 10 effects are to hang pulley and other annex.
As shown in Figure 3 and Figure 4, turbine 11 effects of the present invention are power output, drive earth anchor 2 to rotate, and make earth anchor 2 screw in and screw out; Worm screw 12 effects are to drive turbine 11 to rotate; The first fork type shaft coupling 19 effects are the first connection transmission gear 18 is connected or cut off power source; First connects transmission gear 18 is used for connecting conveying and hoisting mechanism; The first safety coupling 14 Main Functions disconnect power in the time that single unit system overloads, and protective device is not damaged; Bearing 13 effects are to support turbine 11; The effect of 24V motor is that single unit system is realized automatic power source, designs remote-controlled control; Rotary handle is the manual power source of single unit system.The first safety coupling 14 and the second safety coupling 17 are steel-ball type torque force limiting device.
As shown in Fig. 4 is, gear-box 16 effects of the present invention are to make wirerope-winding wheel 15 obtain an applicable rotating speed; Latch 22 prevents that wirerope-winding wheel 15 from reversing, and can make object hover over any point; The second fork type shaft coupling 20 effects are gear-box 16 is connected or cut off power source; The second safety coupling 17 Main Functions disconnect power in the time that single unit system overloads, and ensuring equipment is not damaged; The effect of 24V motor is that single unit system is realized automatic power source, designs remote-controlled control; Rotary handle is the manual power source of single unit system; 15 effects of wirerope-winding wheel are lay winding wire ropes.
As shown in Fig. 5 to Figure 10, earth anchor 2 of the present invention is self-rotary earth anchor, self-rotary earth anchor is with vane 23 by self, in the time of stressed rotation, earth anchor 2 automatically screws under the effect of vane 23, earth anchor 2 itself is hollow, and lower end is provided with the through hole 24 communicating with it, facilitates liquid to flow out to earth anchor 2 to lubricate, earth anchor is provided with screw thread inside and outside 2 upper ends, for connecting other object; Ground anchor pole 29 is extension bars of earth anchor 2, can make earth anchor 2 reach desirable working depth, inside and outside two ends, be provided with screw thread, it can be connected with full screw thread bolt 31 with self-rotary earth anchor, after connection, fix with jackscrew, also can connect with Spiralism type earth anchor connecting ring 30, can make earth anchor 2 increase from spin, precession is more steady; Connect link plate 26 and be used for hanging earthing conductor design, can realize many ground wires and articulate simultaneously, the connecting bolt 28 in the middle of it and self-rotary earth anchor and on anchor pole 29 set screw thread mate; Link 25 is to connect it after earth anchor screws in, can colligation sling, hang pulley and use.
As shown in Figure 11 to Figure 17, chain anchor ear 3 of the present invention is to coordinate conveying and hoisting mechanism design, for this mechanism expands working space, multi-function chain type anchor ear can link up with 34 with chain anchor ear, bent angle win in succession 33 connections use, bent angle is won in succession and 33 is provided with mount hole, also can be connected use with link plate 32, by rotating the nut tensioning chain of chain anchor ear hook, for laying suspension centre on electric pole, for protection electric pole multi-function chain type anchor ear is provided with abrasive rubber cover 35, abrasive rubber cover 35 is rectangular configuration, the a pair of work plane of inwall is designed with wear-resisting spring liner plate and improves the persistence using, for further improving and carry and hoisting mechanism working range, also for it is provided with working platform 4 on bar, be fixed on bar with link plate 32 and multi-function chain type anchor ear, the working platform 4 on bar is provided with multiple links, the use of conveniently working.
The present invention also has the following advantages:
For power grid construction and equipment safety operation lay the foundation, guarantee transmission line of electricity reliability service stability, this device specification and solved staff's safety in special area, reasonably operability, running quality is ageing and science operation is professional.This instrument is in the time installing, overhaul, safeguard, speedily carry out rescue work and sue and labour work, time saving and energy saving, can obviously increase work efficiency, and use function ratio more in alleviating operating personnel's working strength.Can improve the reliability of operation of power networks and alleviate staff's labour intensity, improving safety in production extra earning economic benefit.A co-ordinative construction for the many integrations such as novel conveying, three-dimensional lifting, temporary earthing device and screwing-in device, the structure of the particularly multi-functional conveying such as a kind of novel electric power construction, installation, maintenance, safety first-aid, lifting, precession mechanism.
Above content is only explanation technological thought of the present invention; can not limit protection scope of the present invention with this; every technological thought proposing according to the present invention, any change of doing on technical scheme basis, within all falling into the protection domain of the claims in the present invention book.
Claims (9)
1. a screwing-in device of installing, overhauling for power transmission and transformation, it is characterized in that: comprise support (1) and be installed on the worm gear (11) on support (1), and the worm screw (12) that drives worm gear (11) to rotate of matching with worm gear (11); In worm gear (11), be provided with the bearing (13) for supporting worm gear (11), on worm gear (11), offer with earth anchor (2) on the six square tube holes that match of outer six sides; One end of worm screw (12) is connected with the first safety coupling (14) that disconnects power in when overload, connects as the motor in automatic power source or as the rotary handle in manual power source on the input of the first safety coupling (14).
2. the screwing-in device of installing, overhauling for power transmission and transformation according to claim 1, it is characterized in that: described support (1) comprises that top is for installing the platform (6) of precession mechanism, the bottom of platform (6) is provided with four supporting legs (7) of some joint connected structures, and the lower end of supporting leg (7) is connected with active legs and feet (8); Wherein, between supporting leg (7), be also provided with between two lateral frame (9), on lateral frame (9), be provided with the hanging ring (10) for hanging pulley or annex.
3. the screwing-in device of installing, overhauling for power transmission and transformation according to claim 1 and 2, it is characterized in that: also comprise the conveying and the hoisting mechanism that are installed on support (1), conveying and hoisting mechanism comprise the wirerope-winding wheel (15) for lay winding wire ropes, one end of wire rope is wrapped on wirerope-winding wheel (15), the other end is walked around to be arranged on electric pole and as suspension centre and is obtained chain anchor ear (3), and lower end hangs and promotes object (5); The input of wirerope-winding wheel (15) is connected with the output of gear-box (16), on the input of gear-box (16), be connected with the second safety coupling (17) that disconnects power in when overload, on the input of the second safety coupling (17), connect as the motor in automatic power source or as the rotary handle in manual power source.
4. the screwing-in device of installing, overhauling for power transmission and transformation according to claim 3, it is characterized in that: the end of described worm screw (12) other end connecting rod is provided with the first connection and transmits gear (18), on the first connecting rod connecting between transmission gear (18) and worm screw (12), be provided with and make first to be connected the first fork type shaft coupling (19) that transmits gear (18) connection or cut off power source; On connecting rod between gear-box (16) output and the second safety coupling (17), be disposed with and gear-box (16) be connected or disconnect the second fork type shaft coupling (20) of power source and be connected the second connection transmission gear (21) that transmits the normal engagement of gear (18) with first.
5. the screwing-in device of installing, overhauling for power transmission and transformation according to claim 3, it is characterized in that: in described gear-box (16), be provided with and prevent that wirerope-winding wheel (15) from reversing, and make to promote object and can hover over the latch (22) of any point in lift stroke.
6. the screwing-in device of installing, overhauling for power transmission and transformation according to claim 3, it is characterized in that: one end of described chain anchor ear (3) be fixed on link plate (32) as suspension centre or bent angle win in succession (33) upper, the other end be arranged on anchor ear that link plate (32) or bent angle win in succession on (33) and link up with (34) and be connected; Chain anchor ear (3) part upper and electric pole joint is arranged with rubber sleeve (35), and rubber sleeve (35) is rectangular configuration, and a pair of work plane of its inwall is provided with wear-resisting spring liner plate (36); Working platform (4) is also installed on electric pole, and working platform (4) is fixed on electric pole by link plate (32) and chain anchor ear (3), and is provided with some links on working platform (4).
7. the screwing-in device of installing, overhauling for power transmission and transformation according to claim 1, is characterized in that: described earth anchor (2) is hollow structure, and on earth anchor (2), is provided with vane (23); The lower end of earth anchor (2) and the side of bottom offer respectively the through hole (24) communicating with internal cavity; The inside and outside screw thread that all offers on the top of earth anchor (2).
8. the screwing-in device of installing, overhauling for power transmission and transformation according to claim 7, it is characterized in that: the top of described earth anchor (2) is connected with link (25), link (25) is connected on the internal thread on earth anchor (2) top, and the below of link (25) is provided with and connects link plate (26); Connect on link plate (26) and be provided with some connecting bolts (28) for connecting the hanging point bolt (27) of bottom line and matching with the set screw thread in earth anchor (2) top.
9. the screwing-in device of installing, overhauling for power transmission and transformation according to claim 7, is characterized in that: the upper end of described earth anchor (2) is also connected with the ground anchor pole (29) for increasing earth anchor (2) working depth; The inside and outside screw thread that all offers at anchor pole (29) two ends, ground, and ground anchor pole (29) is connected with earth anchor (2) by Spiralism type earth anchor connecting ring (30) or full screw thread bolt (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410293025.5A CN104074191B (en) | 2014-06-25 | 2014-06-25 | A kind of screwing-in device installed for power transmission and transformation, overhaul |
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| CN201410293025.5A CN104074191B (en) | 2014-06-25 | 2014-06-25 | A kind of screwing-in device installed for power transmission and transformation, overhaul |
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| CN104074191B CN104074191B (en) | 2016-03-02 |
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| CN112376559A (en) * | 2020-11-07 | 2021-02-19 | 国网山东省电力公司烟台供电公司 | Earth anchor for electric power construction |
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| CN104538752A (en) * | 2015-01-14 | 2015-04-22 | 国网河北省电力公司衡水供电分公司 | Grounded drill rod easy to insert and pull and special inserting and pulling tool |
| CN106927381A (en) * | 2017-03-29 | 2017-07-07 | 国网山东省电力公司菏泽供电公司 | A kind of multi-purpose vehicle(MPV) self-rescuer |
| CN112376559A (en) * | 2020-11-07 | 2021-02-19 | 国网山东省电力公司烟台供电公司 | Earth anchor for electric power construction |
Also Published As
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|---|---|
| CN104074191B (en) | 2016-03-02 |
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