CN208508389U - A kind of three-phase four-wire system cable cord holder - Google Patents
A kind of three-phase four-wire system cable cord holder Download PDFInfo
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- CN208508389U CN208508389U CN201820875310.1U CN201820875310U CN208508389U CN 208508389 U CN208508389 U CN 208508389U CN 201820875310 U CN201820875310 U CN 201820875310U CN 208508389 U CN208508389 U CN 208508389U
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Abstract
The utility model discloses a kind of three-phase four-wire system cable cord holders, including the first movable pulley, further include the second movable pulley, third movable pulley and fixed pulley；One end of drawstring is fixed on fixed point, and centre bypasses fixed pulley, and the other end is the free end that can be pulled；The axis of first movable pulley is parallel to the axis of fixed pulley, and the axis spacing of the axis of the first movable pulley and fixed pulley can not increase；One end of movable pulley balance rope is fixed on the second movable pulley, and centre bypasses the first movable pulley, and the other end is fixed on third movable pulley；One end of first traction rope connects the first cable, and centre bypasses the second movable pulley, and the other end connects the second cable；One end of second traction rope connects third cable, and centre bypasses third movable pulley, and the other end connects the 4th cable.The beneficial effects of the utility model are: the confined space operated on bar can be applied, stringing can be carried out to four cables simultaneously, realize perfect stringing effect.
Description
Technical field
The utility model belongs to power construction apparatus field, specifically a kind of three-phase four-wire system cable cord holder.
Background technique
In type low-voltage cable erection construction, a step is to carry out stringing to cable.General Low-voltage Transmission uses
Three-phase four-wire system can synchronize in route simultaneously and lay 4 cables, therefore need to operate 4 cables one by one when stringing, tight respectively
Line.Due to construction personnel's operation all on bar, the space of operation is limited, along with differing greatly for manual control stringing dynamics,
Therefore stringing quality is difficult to ensure that the arc sag of four cables differs greatly.Chinese patent literature CN102709855A was in 2012
October 3 disclosed " tensioning method for side phase conductor in distribution line ", comprising the following steps: at tension pole cross arm both ends
Leading block is set；An aluminium alloy wire tightener is then passed through after the free end of side phase conductor is bypassed leading block；In aluminium alloy
One U-shaped latch closure is set on cord holder；Hauling block with traction rope is wound on to the middle part of balance rope；Finally by balance rope
Two free ends are separately fixed in the U-shaped latch closure of two aluminium alloy wire tighteners, by drawing traction rope for two side phase conductors
It tenses.The inventor of the program declares that the application of the invention can guarantee that both sides phase conductor is during stringing in distribution line
Stress balance, tension pole cross arm will not be made to twist, and the working efficiency of stringing can also be improved.In view of three-phase four
It is used in line system to 4 cables, therefore the technical solution is still difficult to meet the stringing needs of three-phase four-wire system.
Summary of the invention
Based on problem above, the utility model provides a kind of three-phase four-wire system cable cord holder, can apply and grasp on bar
The confined space of work can carry out stringing to four cables simultaneously, realize perfect stringing effect.
In order to realize goal of the invention, the utility model adopts the following technical solution: a kind of three-phase four-wire system cable cord holder,
It further include the second movable pulley, third movable pulley and fixed pulley including the first movable pulley；One end of drawstring is fixed on fixed point,
Centre bypasses fixed pulley, and the other end is the free end that can be pulled；The axis of first movable pulley is parallel to the axis of fixed pulley, and
The axis of one movable pulley and the axis spacing of fixed pulley can not increase；One end of movable pulley balance rope is fixed on the second movable pulley
On, centre bypasses the first movable pulley, and the other end is fixed on third movable pulley；One end of first traction rope connects the first cable,
Centre bypasses the second movable pulley, and the other end connects the second cable；One end of second traction rope connects third cable, and centre is around the
Three movable pulleys, the other end connect the 4th cable.
The three-phase four-wire system cable cord holder of this programme design, includes 3 movable pulleys and a fixed pulley.Wherein, fixed
Pulley is directly connected to drawstring, and one end of drawstring is fixed on fixed point, such as can be on cross-arm, and middle part is around fixed sliding
Wheel, free end is held for operator, to carry out stringing operation.The axis of first movable pulley is parallel to the axis of fixed pulley,
And first movable pulley axis and the axis spacing of fixed pulley can not increase, such design makes fixed pulley and the first movable pulley structure
At a simple pulley blocks, when operator is when pulling drawstring, the first movable pulley can be with the mobile side of fixed pulley
To synchronizing moving.On this basis, and a movable pulley balance rope is devised, the both ends of movable pulley balance rope are dynamic with second respectively
The wheel axis connection of pulley, third movable pulley, it is intermediate then bypass the first movable pulley, the first movable pulley, the second movable pulley, third are moved
Pulley is combined into another pulley blocks.In this pulley blocks, the second movable pulley, third movable pulley can be led respectively by one
Messenger respectively connects 2 cables in pulley two sides, this 2 cables is made to realize that dynamic balance and length are flat on the movable pulley at place
Weighing apparatus, and the second movable pulley and third movable pulley realize dynamic balance and length balance further through the first movable pulley.It is final to realize connection
4 cables on the second movable pulley, third movable pulley all realize dynamic balance and length balance, make to climb the operation on electric pole
Personnel only need the free end for simply pulling drawstring, can be easily accomplished the stringing operation of 4 cables, and between each cable
Perfect dynamic balance and length balance are kept, the arc sag difference of four cables is made to keep minimum.First cable, the second cable,
Three cables, the 4th cable have no special definition, can be arbitrarily designated to actual 4 cables.
Preferably, being rigid connection between the axis of the first movable pulley and the axis of fixed pulley.The axis of first movable pulley and fixed
It is preferred, can be eliminated with the randomness for connecting caused position of restricting with rigid connection between the axis of pulley, help operator high
The completion stringing of effect operates.
Preferably, being rigid connection between the axis of the second movable pulley and the axis of third fixed pulley.This design can incite somebody to action
The distance between second movable pulley and third movable pulley are fixed, eliminate the hidden danger that the cable of the two connection is wound mutually.
It, then can be with if it is necessary, 4 ends of the first traction rope and the second traction rope can be all connected with a movable pulley
This cord holder is extended to the cord holder that can draw 8 cables simultaneously.
In conclusion the beneficial effects of the utility model are: the confined space operated on bar can be applied, it can be simultaneously
Stringing is carried out to four cables, realizes perfect stringing effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Wherein: 1 first movable pulley, 2 second movable pulleys, 3 third movable pulleys, 4 fixed pulleys, 5 drawstrings, 6 movable pulleys balance rope,
7 first traction ropes, 8 second traction ropes, the first cable of A, the second cable of B, C third cable, the 4th cable of D.
Specific embodiment
The utility model is further described with specific embodiment with reference to the accompanying drawing.
Embodiment as shown in Figure 1 is a kind of three-phase four-wire system cable cord holder, is exclusively used in the construction of low voltage three-phase four-wire system
Stringing.This cord holder includes the first movable pulley 1, the second movable pulley 2, third movable pulley 3 and fixed pulley 4.
One end of drawstring 5 is fixed on fixed point.In this example, one end of stretching is hook, can hook be scheduled on the work on cross-arm
In skill hole, makes to stretch and be fixed with cross-arm.The centre of stretching bypasses fixed pulley, and the other end is the free end that can be pulled, for operation
Personnel pull operation.The axis of first movable pulley is parallel to the axis of fixed pulley, and the axis of the axis of the first movable pulley and fixed pulley
Between with connecting rod realize be rigidly connected.One end of movable pulley balance rope 6 is fixed on the second movable pulley, and centre is dynamic around first
Pulley, the other end are fixed on third movable pulley；One end of first traction rope 7 connects the first cable A, and centre is around the second dynamic cunning
Wheel, the other end connect the second cable B；One end of second traction rope 8 connects third cable C, and centre bypasses third movable pulley, another
The 4th cable D of end connection.Wherein, it is realized and is rigidly connected with connecting rod between the axis of the second movable pulley and the axis of third fixed pulley.
In use, operator pulls the free end of drawstring, the first movable pulley is pulled by fixed pulley, the first movable pulley exists
While with fixed pulley synchronizing moving, make to realize dynamic balance and length balance between the second movable pulley and third movable pulley.Second
Movable pulley realizes the dynamic balance and length balance between the first cable and the second cable by the first traction rope, and third movable pulley is logical
The dynamic balance and length balance between the second traction rope realization third cable and the 4th cable are crossed, it is final to realize that being connected to second moves
4 cables on pulley, third movable pulley all realize dynamic balance and length balance, and making to climb the operator on electric pole only needs
The simple free end for pulling drawstring, can be easily accomplished the stringing operation of 4 cables, and keep between each cable perfect
Dynamic balance and length balance, so that the arc sag difference of four cables is kept minimum.
Claims (3)
1. a kind of three-phase four-wire system cable cord holder, including the first movable pulley (1), characterized in that further include the second movable pulley
(2), third movable pulley (3) and fixed pulley (4)；One end of drawstring (5) is fixed on fixed point, and centre bypasses fixed pulley, another
End is the free end that can be pulled；The axis of first movable pulley is parallel to the axis of fixed pulley, and the axis of the first movable pulley and fixed
The axis spacing of pulley can not increase；One end of movable pulley balance rope (6) is fixed on the second movable pulley, and centre is dynamic around first
Pulley, the other end are fixed on third movable pulley；One end of first traction rope (7) connects the first cable (A), and centre bypasses second
Movable pulley, the other end connect the second cable (B)；One end of second traction rope (8) connects third cable (C), and centre bypasses third
Movable pulley, the other end connect the 4th cable (D).
2. a kind of three-phase four-wire system cable cord holder according to claim 1, characterized in that the axis of the first movable pulley and fixed
It is rigid connection between the axis of pulley.
3. a kind of three-phase four-wire system cable cord holder according to claim 1 or 2, characterized in that the axis of the second movable pulley
It is rigid connection between the axis of third fixed pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820875310.1U CN208508389U (en) | 2018-06-05 | 2018-06-05 | A kind of three-phase four-wire system cable cord holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820875310.1U CN208508389U (en) | 2018-06-05 | 2018-06-05 | A kind of three-phase four-wire system cable cord holder |
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| Publication Number | Publication Date |
|---|---|
| CN208508389U true CN208508389U (en) | 2019-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820875310.1U Active CN208508389U (en) | 2018-06-05 | 2018-06-05 | A kind of three-phase four-wire system cable cord holder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115411659A (en) * | 2022-08-29 | 2022-11-29 | 国网江苏省电力有限公司泰州供电分公司 | Wire tightener and cable tightening method |
-
2018
- 2018-06-05 CN CN201820875310.1U patent/CN208508389U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115411659A (en) * | 2022-08-29 | 2022-11-29 | 国网江苏省电力有限公司泰州供电分公司 | Wire tightener and cable tightening method |
| CN115411659B (en) * | 2022-08-29 | 2023-09-08 | 国网江苏省电力有限公司泰州供电分公司 | Cable tensioning method |
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