CN210037186U - Tension pay-off test device - Google Patents
Tension pay-off test device Download PDFInfo
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- CN210037186U CN210037186U CN201921169036.7U CN201921169036U CN210037186U CN 210037186 U CN210037186 U CN 210037186U CN 201921169036 U CN201921169036 U CN 201921169036U CN 210037186 U CN210037186 U CN 210037186U
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Abstract
The utility model discloses a tension pay-off test device, wherein a pay-off pulley is used for guiding a test wire, and the test wire is bent and deflected when passing through a wheel groove of the pay-off pulley; the traction device applies traction tension to the test lead to enable the test lead to move at different traction tension and traction speed; the pay-off tackle and the traction device can translate transversely relative to each other, and the transverse position between the pay-off tackle and the traction device is adjusted; the transverse positions of the pay-off tackle and the traction device are adjusted according to actual terrain, so that the test lead is paid off at a certain deflection angle, set traction tension is applied to the test lead through the traction device during testing, the pay-off traction speed of the test lead is gradually increased, the maximum pay-off traction speed of the test lead at the set deflection angle is obtained within the allowable stress range of each part of a pay-off system, as long as the maximum pay-off traction speed is not exceeded, the phenomena of system damage and groove jump can be avoided, and the pay-off traction speed is increased on the premise of ensuring the safety of the pay-off system.
Description
Technical Field
The utility model relates to a power equipment technical field further relates to a tension unwrapping wire test device.
Background
With the rapid increase of the demand of electricity, the demand of power transmission is increasing; the large-area lead has the advantages of small line loss, large transmission power, few line loops and the like, so that the number of corridors of the power transmission line is reduced, the land occupation is saved, and the large-area lead is widely applied to the field of high-voltage power transmission.
In the traditional large-section lead paying-off construction process, the lead is generally regarded as completely flexible, and the influence of the rigidity of the lead on paying-off is ignored. Hoisting and guiding the lead on the power transmission iron tower through the corner tower pulley, wherein when the lead passes through the corner tower pulley, the bending rigidity of the lead is high, so that the lead near the paying-off pulley has the property similar to a beam; due to the limitation of the terrain, all the leads can not be positioned in the same vertical plane during paying off, a certain deflection angle is formed between the corner tower pulley and the ground lead, the leads and the corner tower pulley have transverse acting force, and the horizontal deflection between the leads and the sliding groove is easy to generate groove running; when the height difference is over large span, when the wire passes through one side of the pulley with lower horizontal height, the bending rigidity of the wire reduces the sag, and the wire at the lower height is easy to raise, so that the groove jump is generated.
The larger the paying-off speed is, the larger the acting force and vibration between the corner tower pulley and the lead are, the more easily the groove jump occurs, so in the paying-off process, constructors can only pay off at an extremely low speed to avoid the groove jump, and the construction speed is reduced. For those skilled in the art, how to determine the jump slot limit condition of pay-off is a technical problem to be solved at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides a tension unwrapping wire test device, the jump groove limit condition of unwrapping wire is confirmed through analogue test, can improve the efficiency of unwrapping wire, and concrete scheme is as follows:
a tension payoff test apparatus comprising:
the bottom end of the supporting frame is used for fixing and supporting;
the paying-off tackle is arranged at the top end of the support frame; the paying-off tackle is used for guiding a test lead;
a traction device for applying traction tension to the test wire; the payoff tackle and the traction device are capable of relative lateral translation.
Optionally, two ends of the test lead are respectively fixed on a traction running plate, a traction rope is connected to the traction running plate, and the traction device applies traction tension to the traction rope.
Optionally, the traction rope is wound around the movable pulley block.
Optionally, the upper end of the traction rope is fixed to the traction running plate, and the lower end of the traction rope is fixed to the ground;
the traction device pulls the movable pulley block through a tension rope, and the tension rope is connected with the movable pulley block by bypassing the fixed pulley.
Optionally, the traction device and the fixed pulley are respectively mounted on a translational slide rail, and can move along the translational slide rail and be fixed in position.
Optionally, the traction device is an electro-hydraulic servo actuator.
Optionally, a guide slide rail is arranged at the top end of the support frame, and the paying-off tackle is driven by a lead screw to move transversely along the guide slide rail.
Optionally, the paying-off trolley is hoisted at the top end of the support frame through an adjusting rope; the height of the pay-off tackle is changed by adjusting the length of the adjusting rope.
Optionally, the support frame and the traction device are mounted on a base.
Optionally, a rectangular rope hanging frame is arranged at the top end of the support frame, rope hanging holes are formed in the circumferential direction of the rope hanging frame, and the paying-off tackle is hung on the corresponding rope hanging holes through adjusting ropes so as to adjust the position of the paying-off tackle.
The utility model provides a tension paying-off test device, wherein the bottom end of a support frame is used for fixing and supporting, a paying-off tackle is arranged at the top end of the support frame and used for guiding a test wire, and the test wire is bent and deflected when passing through a wheel groove of the paying-off tackle; the traction device applies traction tension to the test lead to enable the test lead to move at different traction tension and traction speed; the pay-off tackle and the traction device can translate transversely relative to each other, and the transverse position between the pay-off tackle and the traction device is adjusted; the transverse positions of the pay-off tackle and the traction device are adjusted according to actual terrain, so that the test lead is paid off at a certain deflection angle, set traction tension is applied to the test lead through the traction device during testing, the pay-off traction speed of the test lead is gradually increased, the maximum pay-off traction speed of the test lead at the set deflection angle is obtained within the allowable stress range of each part of a pay-off system, and in the actual pay-off operation process, as long as the maximum pay-off traction speed is not exceeded, the phenomena of system damage and groove jumping can be avoided, and the pay-off traction speed is increased on the premise of ensuring the safety of the pay-off system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a tension pay-off testing device provided by the present invention;
FIG. 2 is a top view of the tension pay-off testing device provided by the present invention;
FIG. 3 is a structural diagram of the rope hanging frame at the top end of the support frame and the paying-off tackle.
The figure includes:
the device comprises a support frame 1, a rope hanging frame 11, a paying-off tackle 2, an adjusting rope 21, a test lead 3, a traction walking plate 31, a traction rope 32, a movable pulley block 33, a traction device 4, a tension rope 41, a fixed pulley 42 and a base 5.
Detailed Description
The core of the utility model lies in providing a tension unwrapping wire test device, the jump groove limit condition of unwrapping wire is confirmed through analogue test, can improve the efficiency of unwrapping wire.
In order to make those skilled in the art better understand the technical solution of the present invention, the tension pay-off testing device of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, it is a front view of the tension pay-off testing device provided by the present invention; the device comprises a support frame 1, a paying-off tackle 2, a guide test lead 3, a traction device 4 and the like; the bottom end of the support frame 1 is used for fixing and supporting, the support frame 1 is used for simulating a power transmission iron tower, and the whole support frame 1 is fixed relative to the ground.
The paying-off tackle 2 is arranged at the top end of the support frame 1, the position of the paying-off tackle 2 on the support frame 1 is the same as the position of the paying-off tackle 2 on the power transmission iron tower, and the paying-off tackle 2 provides supporting force through the support frame 1 and is hoisted on the top end of the support frame 1. The paying-off tackle 2 is used for guiding a test wire 3, the test wire 3 is used for simulating a power transmission line, the material and the specification size are the same as those of the power transmission line, the test wire 3 penetrates through the paying-off tackle 2 and is supported by the paying-off tackle, the position of the test wire 3 at the paying-off tackle 2 is the highest, the positions of two sides of the test wire 3 are lower than the height of the paying-off tackle, and the test wire 3 bends and turns through the wheel groove position of the paying-off tackle.
The traction device 4 applies traction tension to the test lead 3, the traction tension and the traction speed applied to the lead in the paying-off process are simulated, and the test lead 3 is kept in a tensioning state through the traction device 4.
The payoff trolley 2 and the traction device 4 are capable of relative lateral translation, as shown in fig. 1, the direction of translation of the payoff trolley 2 and the traction device 4 being perpendicular to the plane of the paper, i.e. the lateral distance between the payoff trolley 2 and the traction device 4 remains constant.
As shown in fig. 2, for the top view of the tension pay-off testing device provided by the present invention, the state that the pay-off tackle 2 and the test lead 3 are located at two different positions is shown in the figure, the pay-off tackle 2 horizontally slides along the vertical direction in the figure, because the pay-off tackle 2 provides support and guide for the test lead 3, when the pay-off tackle 2 moves, the test lead 3 is driven to move, so that the test lead 3 forms an included angle between the pay-off tackle 2 and the traction device 4, and the lead unfolding working condition under different enveloping angles and different hands-on can be simulated; when the pay-off tackle 2 and the traction device 4 are in the same vertical plane, the whole test lead 3 is in the same plane, the test lead 3 does not deflect, the traction tension direction of the traction device 4 to the test lead 3 is in the vertical plane, as shown in the direction of fig. 2, the traction tension only has a transverse component, and the traction device 4 does not apply the deflected traction tension to the test lead 3; when the pay-off tackle 2 and the traction device 4 are not in the same vertical plane, the projection of the test lead 3 in the horizontal plane forms a certain included angle, as shown in the direction of fig. 2, at the moment, the traction tension direction of the traction device 4 on the test lead 3 can be decomposed into a transverse component and a vertical component, and the traction device 4 applies deflected traction tension on the test lead 3.
The transverse positions of the pay-off tackle 2 and the traction device 4 are adjusted according to actual terrain, so that the test lead 3 is paid off at a certain deflection angle, pay-off simulation of the corner rotating towers at different corners is carried out, and the stress of a pay-off system is monitored by attaching strain gauges to the test lead 3, the pay-off tackle 2 and a hanging cable of the pay-off tackle. During testing, traction tension is applied to the test lead 3 through the traction device 4, the paying-off traction speed of the test lead 3 is gradually increased until the test lead 3 is separated from the paying-off tackle 2 to generate groove jumping, and therefore the maximum paying-off traction speed of the test lead 3 under a set deflection angle is obtained; in the actual operation and paying-off process at the same deflection angle, the phenomenon of groove jumping can be prevented as long as the maximum paying-off traction speed is not exceeded, after the maximum paying-off traction speed is determined, the actual paying-off traction speed is slightly smaller than the maximum paying-off traction speed, the larger paying-off traction speed is always kept, and the paying-off efficiency is favorably improved.
The test can be repeatedly carried out for the same pay-off angle, and the average value of the tests is taken as the maximum pay-off traction speed; the test lead 3 is adjusted to different angles in sequence for paying off, and the maximum paying-off traction speed under different deflection angles can be obtained.
On the basis of the scheme, because the test lead 3 is a plurality of stranded leads, the leads are clamped and fixed in parallel through a lead guide, two ends of the test lead 3 are respectively fixed on the traction walking plates 31, and the two traction walking plates 31 at the two ends are respectively fixed at the end parts of the plurality of leads; the traction walking plate 31 is connected with a traction rope 32, the traction device 4 applies traction tension to the traction rope 32, and only one traction rope 32 is arranged, so that the traction device 4 can apply acting force conveniently.
As shown in fig. 1, the upper end of the traction rope 32 is fixed to the traction deck 31, the lower end is fixed to the ground, the middle part of the traction rope 32 is wound on the movable pulley block 33, and the traction rope 32 can move relative to the movable pulley block 33. The traction device 4 pulls the movable pulley block 33 through the tension rope 41, so that the movable pulley block 33 moves relative to the traction rope 32; the upper end of the pulling rope 41 is fixed on the movable pulley block 33, the lower end is fixed on the telescopic end of the traction device 4, the middle part of the pulling rope 41 rounds the fixed pulley 42, the fixed pulley 42 is installed on the ground, the pulling rope 41 is turned through the fixed pulley 42, the direction of the fixed pulley 42 can rotate relative to the ground, the direction of the pulling rope 41 is changed under the condition that the direction of the traction device 4 is not changed, and the direction of the traction tension is consistent with the direction of the traction rope 32.
On the basis of any one of the technical schemes and the mutual combination thereof, the utility model arranges a guide slide rail at the top end of the support frame 1, and the paying-off tackle 2 is driven by a screw rod to move transversely along the guide slide rail; fig. 2 shows that draw gear 4 position keeps fixed, the structure of 2 horizontal translations of unwrapping wire coaster, and the direction slide rail that support frame 1 top set up is used for direction unwrapping wire coaster 2 to remove, lead screw and direction slide rail parallel arrangement, and the correspondence sets up the nut structure on the unwrapping wire coaster 2, through the translation of lead screw drive unwrapping wire coaster 2, the effect of auto-lock still can be played in lead screw and nut cooperation, and the unable reverse drive lead screw of unwrapping wire coaster 2 rotates.
Preferably, the paying-off tackle 2 of the utility model is hoisted on the top end of the support frame 1 through the adjusting rope 21, the adjusting rope 21 is fixed on the nut, and the nut is driven by the lead screw and guided by the guide slide rail arranged on the top end of the support frame 1 to move, so that the paying-off tackle 2 can horizontally slide relative to the support frame 1; the adjustable length of adjusting rope 21, and then change the height of unwrapping wire coaster 2, do not change under the condition of support frame 1 height, make experimental wire 3 buckle in the high department of difference.
The supporting frame 1 and the traction device 4 are arranged on the same base 5, the base 5 is placed on the ground to support and limit the supporting frame 1 and the traction device 4, and the supporting frame 1 does not need to be separately fixed on the ground; the base 5 may be welded together by steel pipes to form a frame structure.
On the basis of any one of the above technical solutions and the mutual combination thereof, the utility model provides another form of height and position adjustment of the paying-off tackle 2, as shown in fig. 3, which is a structure diagram of the rope hanging frame 11 at the top end of the support frame 1 and the paying-off tackle 2, and is equivalent to a side view of fig. 1; the top end of the support frame 1 is provided with a rectangular rope hanging frame 11, rope hanging holes are formed in the circumferential direction of the rope hanging frame 11, the paying-off tackle 2 in the embodiment is also a pulley structure shown in the figure, the paying-off tackle 2 is hung on the corresponding rope hanging holes through adjusting ropes 21, the adjusting ropes 21 can be hoisted on each rope hanging hole, and the paying-off tackle 2 is hung on different rope hanging holes to adjust the position of the paying-off tackle 2; fig. 3 shows two different positions of the adjusting rope 21 hung on the upper beam and the side upright post respectively, so that the paying-off tackle 2 is at different positions and angles. The working conditions of conductor spreading under different enveloping angles and different transfer can be simulated by changing the length of the adjusting rope 21 and adjusting different hanging positions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A tension pay-off test device is characterized by comprising:
the bottom end of the supporting frame (1) is used for fixing and supporting;
the paying-off tackle (2) is arranged at the top end of the support frame (1); the paying-off tackle (2) is used for guiding a test lead (3);
a traction device (4) for applying traction tension to the test wire (3); the pay-off tackle (2) and the traction device (4) can translate transversely relative to each other.
2. The tension pay-off test device according to claim 1, wherein two ends of the test wire (3) are respectively fixed on a traction running plate (31), a traction rope (32) is connected to the traction running plate (31), and the traction device (4) applies traction tension to the traction rope (32).
3. The tension pay-off test device according to claim 2, wherein the pulling rope (32) is wound around a movable pulley block (33).
4. The tension pay-off test device according to claim 3, wherein the upper end of the traction rope (32) is fixed on the traction walking plate (31), and the lower end is fixed on the ground;
the traction device (4) pulls the movable pulley block (33) through a tension rope (41), and the tension rope (41) bypasses a fixed pulley (42) to be connected with the movable pulley block (33).
5. The tension pay-off test device according to claim 4, characterized in that the traction device (4) and the fixed pulley (42) are respectively mounted on a translational slide rail, can move along the translational slide rail and are fixed in position.
6. The tension pay-off test device according to claim 5, wherein the traction device (4) is an electro-hydraulic servo actuator.
7. The tension pay-off test device according to any one of claims 1 to 6, wherein a guide rail is arranged at the top end of the support frame (1), and the pay-off trolley (2) is driven by a screw rod to move transversely along the guide rail.
8. The tension pay-off test device according to claim 7, wherein the pay-off tackle (2) is hoisted on the top end of the support frame (1) through an adjusting rope (21); the height of the pay-off tackle (2) is changed by adjusting the length of the adjusting rope (21).
9. The tension pay-off test device according to claim 7, wherein the support frame (1) and the traction device (4) are mounted on a base (5).
10. A tension pay-off test device as claimed in any one of claims 1 to 6, wherein a rectangular rope hanging frame (11) is arranged at the top end of the support frame (1), rope hanging holes are formed in the circumferential direction of the rope hanging frame (11), and the pay-off pulleys (2) are hung on the corresponding rope hanging holes through adjusting ropes (21) so as to adjust the positions of the pay-off pulleys (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921169036.7U CN210037186U (en) | 2019-07-23 | 2019-07-23 | Tension pay-off test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921169036.7U CN210037186U (en) | 2019-07-23 | 2019-07-23 | Tension pay-off test device |
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| Publication Number | Publication Date |
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| CN210037186U true CN210037186U (en) | 2020-02-07 |
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| CN201921169036.7U Active CN210037186U (en) | 2019-07-23 | 2019-07-23 | Tension pay-off test device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261095A (en) * | 2019-07-23 | 2019-09-20 | 广东电网有限责任公司 | A kind of tension stringing experimental rig |
| CN116929452A (en) * | 2023-07-26 | 2023-10-24 | 东北电力大学 | Experimental simulation device and method for sliding of composite cross arm wire without suspension string |
-
2019
- 2019-07-23 CN CN201921169036.7U patent/CN210037186U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261095A (en) * | 2019-07-23 | 2019-09-20 | 广东电网有限责任公司 | A kind of tension stringing experimental rig |
| CN116929452A (en) * | 2023-07-26 | 2023-10-24 | 东北电力大学 | Experimental simulation device and method for sliding of composite cross arm wire without suspension string |
| CN116929452B (en) * | 2023-07-26 | 2024-03-08 | 东北电力大学 | Experimental simulation device and method for sliding of composite cross arm wire without suspension string |
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