CN201843382U - Transmission tower head structure adopting top booms of cross arms made of insulation materials to reduce height of tower - Google Patents
Transmission tower head structure adopting top booms of cross arms made of insulation materials to reduce height of tower Download PDFInfo
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- CN201843382U CN201843382U CN2010205835940U CN201020583594U CN201843382U CN 201843382 U CN201843382 U CN 201843382U CN 2010205835940 U CN2010205835940 U CN 2010205835940U CN 201020583594 U CN201020583594 U CN 201020583594U CN 201843382 U CN201843382 U CN 201843382U
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- upper chord
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Abstract
The utility model relates to the technical field of transmission towers, in particular to a transmission tower head structure adopting top booms of cross arms made of insulation materials to reduce the height of a tower. The transmission tower head structure comprises a tower body, more than two layers of cross arms, the top booms of the cross arms and cross arm lower planes, leads are serially hung at hanging points via insulators, the top booms are connected with the cross arm lower planes without auxiliary materials due to the fact that the top booms of the cross arms are made of the insulation materials, so that discharging gap circles of the leads can be tangent to positions of the top booms of the cross arms of the lower layer, discharging can be avoided as long as the discharging gap circles are not tangent to the cross arm lower planes of the lower layer, the leads can be deflected upwards by wind, the distances from the leads to the cross arm lower planes with the hanging points of the leads are required to be elongated properly, and accordingly, when the lengths of the cross arms of the upper layer are smaller than or equal to those of the cross arms of the lower layer, the distances from the leads hung on the cross arms on the upper layer to the cross arm lower planes of the lower layer are smaller than or equal to the distances from the leads to the cross arm lower planes with the hanging points of the leads, so that the distance between the two layers of cross arms is reduced. Moreover, purpose of reducing the height of the transmission tower is realized.
Description
Technical field
The utility model relates to the transmission tower technical field, is specifically related to a kind of transmission tower tower head structure that adopts insulation materials cross-arm upper chord to reduce tower height.
Background technology
The tower head of traditional transmission tower is all made with the steel member, its form of structure generally all is to comprise the shaft tower body, the cross-arm upper chord and the cross-arm lower plane that connect of shaft tower body therewith, being connected the other end of the upper chord on the shaft tower body and the lead hanging point place of cross-arm lower plane links to each other, upper chord downwards and horizontal plane certain angle is arranged, the cross-arm lower plane is arranged horizontally, the form of structure that has auxiliary material to be connected between long cross-arm upper chord and the cross-arm lower plane, lead hangs on the lead hanging point by insulator, when two of cross-arm extensions and above loop, other loop hangs on the intersection point of auxiliary material and lower plane, this arrangement form requires up and down the distance between the cross-arm will guarantee that the discharging gap circle of lead after hanging lead can not run into any member of cross-arm and body of the tower, because upper chord occupies certain space above the cross-arm lower plane, therefore in order to guarantee that lead does not discharge to the upper chord of lower floor's cross-arm, require the discharging gap circle of lead can not switch to lower floor's cross-arm upper chord, when upper strata cross-arm during no longer than lower floor's cross-arm, the lead that the upper strata cross-arm is hung all is greater than the distance of this lead to its hanging point place cross-arm lower plane to the distance of lower floor's cross-arm lower plane, cause tower height higher, waste of material is bigger.
Summary of the invention
The purpose of this utility model is to provide a kind of transmission tower tower head structure that adopts insulation materials cross-arm upper chord to reduce tower height, uses the cross-arm that the insulation upper chord is made, and can reduce tower height, economical with materials effectively.
The purpose of this utility model is achieved through the following technical solutions.
Employing insulation materials cross-arm upper chord of the present utility model reduces the transmission tower tower head structure of tower height, comprise the shaft tower body, two-layer above cross-arm is installed on the shaft tower body, cross-arm is made of upper chord and cross-arm lower plane, upper chord one end is connected with the shaft tower body, the lead hanging point place of the other end and cross-arm lower plane links to each other, lead hangs over the hanging point place by insulator string, it is characterized in that described upper chord is the insulation materials upper chord, when the length of upper strata cross-arm was less than or equal to the length of lower floor's cross-arm, the lead that the upper strata cross-arm is hung arrives the distance of its hanging point place cross-arm lower plane: this lead was to distance=1: 0.9～1.0 of lower floor's cross-arm lower plane.
When described cross-arm lower plane had two or more lead hanging points, each lead hanging point place all had the insulation upper chord to be attached thereto.
The described insulation upper chord that is connected each lead hanging point place is two upper chords that are hung in shaft tower body front and shaft tower body back.
The perhaps described insulation upper chord that is connected each lead hanging point place is a upper chord that hangs over shaft tower body front and middle part, shaft tower body back.
In general: the distance between the two-layer cross-arm is controlled by the discharging gap circle of lead, in traditional tower head structure since shaft tower and cross-arm all make with the steel member, because upper chord occupies certain space above the cross-arm lower plane, therefore in order to guarantee that lead does not discharge to the upper chord of lower floor's cross-arm, require the discharging gap circle of lead can not switch to lower floor's cross-arm upper chord, when upper strata cross-arm during no longer than lower floor's cross-arm, the lead that the upper strata cross-arm is hung all is greater than the distance of this lead to its hanging point place cross-arm lower plane to the distance of lower floor's cross-arm lower plane, cause tower height higher, waste of material is bigger.Cross-arm upper chord of the present utility model is owing to adopt the insulation materials manufacturing, and not having auxiliary material between upper chord and the cross-arm lower plane links to each other, therefore the discharging gap circle of lead can cut lower floor's cross-arm upper chord the position only otherwise incision lower floor cross-arm lower plane just can not produce discharge, because wind can make the lead beat that makes progress, lead needs suitably lengthening to the distance of its hanging point place cross-arm lower plane, therefore can realize that the lead that the upper strata cross-arm is hung is not more than the distance that this lead arrives its hanging point place cross-arm lower plane to the distance of lower floor's cross-arm lower plane when upper strata cross-arm during no longer than lower floor's cross-arm.Can reduce the distance between the two-layer cross-arm thus, thereby reach the purpose that reduces the transmission tower height.
When described cross-arm lower plane has two to reach with the upper conductor hanging point, each lead hanging point place all has the insulation upper chord to be attached thereto, the insulation upper chord that middle hanging point place connects just can replace traditional auxiliary material to play the effect of carrying lead gravity, and the while also can not influence the discharging gap of lead.
Beneficial effect of the present utility model is: can reduce tower height, economical with materials effectively.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present utility model.
Fig. 2 is the example structure schematic diagram of cross-arm lower plane of the present utility model when two lead hanging points are arranged.
Fig. 3 is that upper chord of the present utility model is the structure vertical view of embodiment that is hung in two upper chords of shaft tower body front and back.
Fig. 4 is that upper chord of the present utility model is the structure vertical view of embodiment that hangs over a upper chord of middle part, shaft tower body front and back.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
As Fig. 1, shown in 2, employing insulation materials cross-arm upper chord of the present utility model reduces the transmission tower tower head structure of tower height, comprise shaft tower body 1, the cross-arm upper chord 3 and the cross-arm lower plane 2 that connect of shaft tower body 1 therewith, lead hanging point 4 places of the other end of this cross-arm upper chord 3 and cross-arm lower plane 2 link to each other, lead 5 hangs over hanging point 4 places by insulator string 7, it is characterized in that described upper chord 3 is the insulation materials upper chord, when the length of upper strata cross-arm was less than or equal to the length of lower floor's cross-arm, the lead 5 that the upper strata cross-arm is hung was less than or equal to the distance of this lead 5 to its hanging point 4 place cross-arm lower planes 2 to the distance of lower floor's cross-arm lower plane 2.
As shown in Figure 2, when described cross-arm lower plane 2 had two or more lead hanging points 4, each lead hanging point 4 place had insulator crossarm upper chord 3 to be attached thereto respectively to connect.
As shown in Figure 3, the described insulator crossarm upper chord 3 at each lead hanging point 4 place that is connected is for being hung in two upper chords 3 of shaft tower body 1 front and shaft tower body 1 back.
As shown in Figure 4, the described insulator crossarm upper chord 3 at each lead hanging point 4 place that is connected is for hanging over a cross-arm upper chord 3 of shaft tower body 1 front and middle part, shaft tower body 1 back.
After lead hanging point 4 hangs up lead 5 by insulator string 7, distance between the two-layer cross-arm lower plane 2 is controlled by the discharging gap circle 6 of lead 5, in traditional tower head structure,, therefore require the discharging gap circle 6 of lead 5 can not run into the cross-arm upper chord because shaft tower and cross-arm are all made with the steel member.Cross-arm upper chord 3 of the present utility model is owing to adopt the insulation materials manufacturing, and not having auxiliary material between cross-arm upper chord 3 and the cross-arm lower plane 2 links to each other, therefore the position of the discharging gap of lead circle 6 incision cross-arm upper chords 3 can not produce discharge yet, can reduce the distance between the two-layer cross-arm thus, thereby reach the purpose that reduces the transmission tower height.Because wind can make upwards beat of lead 5, lead 5 needs suitably lengthening to the distance of its hanging point 4 place cross-arm lower planes 2, therefore can realize that the lead 5 that the upper strata cross-arm is hung arrives the distance of its hanging point place cross-arm lower plane 2: this lead 5 is to distance=1: 0.9～1.0 of lower floor's cross-arm lower plane when upper strata cross-arm during no longer than lower floor's cross-arm.
When described cross-arm lower plane 2 has two to reach with upper conductor hanging point 4, each lead hanging point 4 place all has insulator crossarm upper chord 3 to be attached thereto, the insulator crossarm upper chord 3 that middle hanging point 4 places connect just can replace traditional auxiliary material to play the effect of carrying lead gravity, and the while also can not influence the discharging gap of lead.
The insulation upper chord 3 that is connected each lead hanging point 4 place is for being hung in two upper chords 3 of shaft tower body 1 front and shaft tower body 1 back.The perhaps described insulation upper chord 3 at each lead hanging point 4 place that is connected is for hanging over a upper chord 3 of shaft tower body 1 front and middle part, shaft tower body 1 back.
Beneficial effect of the present utility model is: can effectively reduce tower height, economical with materials.
Claims (4)
1. transmission tower tower head structure that adopts insulation materials cross-arm upper chord to reduce tower height, comprise the shaft tower body, two-layer above cross-arm is installed on the shaft tower body, cross-arm is made of upper chord and cross-arm lower plane, upper chord one end is connected with the shaft tower body, the lead hanging point place of the other end and cross-arm lower plane links to each other, lead hangs over the hanging point place by insulator string, it is characterized in that described upper chord is the insulation materials upper chord, when the length of upper strata cross-arm was less than or equal to the length of lower floor's cross-arm, the lead that the upper strata cross-arm is hung arrives the distance of its hanging point place cross-arm lower plane: this lead was to distance=1: 0.9～1.0 of lower floor's cross-arm lower plane.
2. employing insulation materials cross-arm upper chord according to claim 1 reduces the transmission tower tower head structure of tower height, it is characterized in that when described cross-arm lower plane has two or more lead hanging points each lead hanging point place all has the insulation upper chord to be attached thereto.
3. employing insulation materials cross-arm upper chord according to claim 2 reduces the transmission tower tower head structure of tower height, it is characterized in that the described insulation upper chord that is connected each lead hanging point place is two insulation upper chords that are hung in shaft tower body front and shaft tower body back.
4. employing insulation materials cross-arm upper chord according to claim 2 reduces the transmission tower tower head structure of tower height, it is characterized in that the described insulation upper chord that is connected each lead hanging point place is a upper chord that hangs over shaft tower body front and middle part, shaft tower body back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205835940U CN201843382U (en) | 2010-10-29 | 2010-10-29 | Transmission tower head structure adopting top booms of cross arms made of insulation materials to reduce height of tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205835940U CN201843382U (en) | 2010-10-29 | 2010-10-29 | Transmission tower head structure adopting top booms of cross arms made of insulation materials to reduce height of tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843382U true CN201843382U (en) | 2011-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205835940U Expired - Fee Related CN201843382U (en) | 2010-10-29 | 2010-10-29 | Transmission tower head structure adopting top booms of cross arms made of insulation materials to reduce height of tower |
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| Country | Link |
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| CN (1) | CN201843382U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900261A (en) * | 2012-09-19 | 2013-01-30 | 国网电力科学研究院武汉南瑞有限责任公司 | Combined composite cross arm |
| CN112134242A (en) * | 2020-08-21 | 2020-12-25 | 中国电力科学研究院有限公司 | Composite insulating cross arm for power transmission line and preparation method |
| CN114319981A (en) * | 2021-11-26 | 2022-04-12 | 国网北京市电力公司 | Connecting structure, pole tower and connecting method |
-
2010
- 2010-10-29 CN CN2010205835940U patent/CN201843382U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900261A (en) * | 2012-09-19 | 2013-01-30 | 国网电力科学研究院武汉南瑞有限责任公司 | Combined composite cross arm |
| CN112134242A (en) * | 2020-08-21 | 2020-12-25 | 中国电力科学研究院有限公司 | Composite insulating cross arm for power transmission line and preparation method |
| CN114319981A (en) * | 2021-11-26 | 2022-04-12 | 国网北京市电力公司 | Connecting structure, pole tower and connecting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20151029 |
|
| EXPY | Termination of patent right or utility model |