CN112436454A - Adjustable combined large-span cable bridge - Google Patents
Adjustable combined large-span cable bridge Download PDFInfo
- Publication number
- CN112436454A CN112436454A CN202011082006.XA CN202011082006A CN112436454A CN 112436454 A CN112436454 A CN 112436454A CN 202011082006 A CN202011082006 A CN 202011082006A CN 112436454 A CN112436454 A CN 112436454A
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- Prior art keywords
- fixedly arranged
- clamping
- bridge
- gear
- cavity
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0406—Details thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to an adjustable combined type large-span cable bridge, which comprises a plurality of bridges which are transversely connected, wherein the upper ends of two adjacent bridges are rotatably connected through a rotating shaft, a gear is fixedly arranged on the rotating shaft, the gear and the rotating shaft are concentrically and rotatably arranged, the upper end of the gear is also provided with a matched limiting mechanism, the limiting mechanism is arranged in the side wall of the bridge, the lower ends of two adjacent bridges are connected through a clamping mechanism, the lower end of each bridge is fixedly provided with a support plate, and the lower end of each support plate is fixedly provided with a support rod; when the bridge is laid and the bridge is affected by obstacles, the bridge can be bent and combined to bypass the obstacles, so that the normal laying process of the cable bridge is ensured, and the application range of the bridge is improved.
Description
Technical Field
The invention relates to the technical field of cable bridges, in particular to an adjustable combined type large-span cable bridge.
Background
The cable bridge frame is composed of a support, a supporting arm, an installation accessory and the like, can be independently erected and also can be laid on various buildings and pipe gallery supports, and the characteristics of simple structure, attractive appearance, flexible configuration, convenience in maintenance and the like are reflected; the large-span cable bridge has the characteristics of large supporting span compared with a common cable bridge, large bearing capacity compared with the common cable bridge and the like due to exquisite structural design;
the existing large-span bridge frame is often required to be supported by more support rods when long-distance laying is carried out, so that the situation that the local part of the bridge frame collapses is prevented, meanwhile, the existing large-span bridge frame is often encountered with obstacles when laying, the conventional solution is to prolong the bridge frame, so that the bridge frame bypasses the obstacles and continues laying, but the method increases the laying cost, needs to increase the length of a cable when laying the cable in the later period, and simultaneously needs to bend the cable to a greater extent, so that the cable is not beneficial to the safety of the cable, and therefore an adjustable combined large-span cable bridge frame is provided.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an adjustable combined type large-span cable bridge, so that when the bridge is laid and an obstacle is encountered, the laying of the bridge is influenced, the bridge can be bent and combined, the obstacle is bypassed, the normal laying process of the cable bridge is ensured, and the application range of the bridge is improved.
The technical scheme for solving the technical problems is as follows: the utility model provides a big span cable testing bridge of combination formula with adjustable, including a plurality of crane span structures that transverse connection set up, two are adjacent the upper end of crane span structure is rotated through the pivot and is connected the setting, the fixed gear that is equipped with in the pivot, gear and pivot are concentric rotation setting, the upper end of gear still is equipped with assorted stop gear, stop gear sets up in the lateral wall of crane span structure, and is two adjacent the lower extreme of crane span structure is connected the setting through clamping mechanism, and is individuality the fixed backup pad that is equipped with of lower extreme of crane span structure, the fixed bracing piece that is equipped with of lower extreme of backup pad, the bracing piece is.
The invention further defines the technical scheme that:
preferably, stop gear is including the fixed smooth chamber that sets up in the crane span structure lateral wall, it is equipped with the slider to slide in the smooth chamber, the slider is close to the fixed dead lever that is equipped with of one end of gear, the fixed joint piece that is equipped with in end of dead lever, joint piece and gear phase-match meshing set up, the fixed first spring that is equipped with of opposite side lateral wall of slider, the fixed setting of first spring is on the diapire in smooth chamber, the upper wall of slider still fixedly is equipped with the connecting rod, the fixed stirring piece that is equipped with in upper end of connecting rod.
Preferably, latch mechanism is equipped with assorted card chamber including the fixed joint board that sets up on one of them crane span structure lower extreme lateral wall in the adjacent crane span structure lower extreme lateral wall, the joint board extends into and blocks the intracavity setting, just fixed being equipped with the second spring between the diapire in joint board and card chamber, vertical running through is equipped with a plurality of through-holes on the joint board, one of them run through in the through-hole and be equipped with the threaded rod, be equipped with the assorted screw hole on the lateral wall in card chamber, the terminal screw thread setting of threaded rod is in the threaded hole, the screw hole is close to the opening part setting in card chamber, the other end of threaded rod is fixed and is equipped with the carousel.
Preferably, a strong magnet is fixedly arranged in the lower end of the sliding block, a strong magnet is correspondingly and fixedly arranged on the side wall of the sliding cavity, and the strong magnet on the side wall of the sliding cavity is arranged close to the bottom end of the sliding cavity.
Preferably, the poking block is arranged in a spherical shape, and a rubber anti-skid block is sleeved on the poking block.
Preferably, the clamping plate is made of a natural rubber material with a relatively hard texture.
The invention has the beneficial effects that:
(1) the angle of the adjacent bridges can be changed by rotating through the mutual matching of the rotating shaft and the gear, and the bridges rotate simultaneously to form an arc shape together, so that corresponding obstacles are bypassed, the extension of the bridges is avoided, the laying cost is saved, and the structural safety of the cable is protected to a certain extent;
(2) according to the invention, through the arrangement of the limiting mechanism, when the angle between the bridges needs to be changed, the poking block is poked to separate the clamping block from the gear, and the poking block is continuously poked to enable the strong magnet on the sliding block and the strong magnet on the side wall of the sliding cavity to be adsorbed together, so that the angle between two adjacent bridges is adjusted, the poking block does not need to be manually grasped to prevent the clamping block from rebounding, and the working process of a worker is facilitated;
(3) according to the invention, through the arrangement of the clamping mechanism, when the bridge is subjected to bending adjustment, the clamping plate moves in the clamping cavity, and the clamping plate is bent, so that the bending between the bridges is realized, meanwhile, under the elastic action of the second spring, the situation that the clamping plate slides out of the clamping cavity is effectively prevented, and after the corresponding bending adjustment is carried out, the bridge is fixed through the threaded rod penetrating through the clamping plate and being in threaded arrangement with the threaded hole, so that the bridge is prevented from further bending and even falling off.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic structural diagram at B in fig. 1.
In the figure: the device comprises a bridge frame 1, a rotating shaft 2, a gear 3, a supporting plate 4, a supporting rod 5, a sliding cavity 6, a sliding block 7, a fixing rod 8, a clamping block 9, a first spring 10, a connecting rod 11, a poking block 12, a powerful magnet 13, a clamping plate 14, a clamping cavity 15, a second spring 16, a through hole 17, a threaded rod 18, a threaded hole 19 and a turntable 20.
Detailed Description
Example 1
The embodiment provides an adjustable combined type large-span cable bridge, as shown in fig. 1-3, comprising a plurality of bridge frames 1 which are transversely connected, the upper ends of two adjacent bridge frames 1 are rotatably connected through a rotating shaft 2, a gear 3 is fixedly arranged on the rotating shaft 2, the gear 3 and the rotating shaft 2 are concentrically and rotatably arranged, the angles of the adjacent bridge frames 1 can be changed through rotation through the mutual matching of the rotating shaft 2 and the gear 3, the plurality of bridge frames 1 rotate simultaneously to jointly form an arc shape, so that corresponding obstacles are bypassed, the extension of the bridge frame 1 is avoided, the laying cost is saved, meanwhile, the structural safety of the cable is protected to a certain extent, the upper end of the gear 3 is also provided with a matched limiting mechanism, the limiting mechanism comprises a sliding cavity 6 fixedly arranged in the side wall of the bridge frame 1, a sliding block 7 is arranged in the sliding cavity 6 in a sliding manner, a strong magnet 13 is fixedly arranged in the lower end of, the side wall of the sliding cavity 6 is also correspondingly and fixedly provided with a strong magnet 13, and the strong magnet 13 on the side wall of the sliding cavity 6 is arranged close to the bottom end of the sliding cavity 6, so that when the sliding block 7 slides to the bottom end of the sliding cavity 6 in the sliding cavity 6, the strong magnet 13 on the sliding block 7 and the strong magnet 13 on the side wall of the sliding cavity 6 are adsorbed together, thereby adjusting the angle between two adjacent bridge frames 1, and the shifting block 12 is not required to be grasped manually so as to prevent the rebounding of the clamping block 9, thereby facilitating the working process of a worker, the end of the sliding block 7 close to the gear 3 is fixedly provided with a fixed rod 8, the tail end of the fixed rod 8 is fixedly provided with the clamping block 9, the clamping block 9 and the gear 3 are arranged in a matched and meshed manner, the side wall of the other side of the sliding block 7 is fixedly provided with a first spring 10, the first spring 10 is fixedly arranged on the bottom wall of the sliding cavity 6, the poking blocks 12 are arranged in a spherical shape, rubber anti-skidding blocks are sleeved on the poking blocks 12, so that a worker can push the bridge frame 1 conveniently and can prevent slipping during pushing, the poking blocks 12 are poked to separate the clamping blocks 9 from the gear 3 when the angle between the bridge frame 1 needs to be changed through the arrangement of the limiting mechanisms, the poking blocks 12 are continuously poked to enable the strong magnets 13 on the sliding blocks 7 and the strong magnets 13 on the side walls of the sliding cavities 6 to be adsorbed together, so that the angle between two adjacent bridge frames 1 can be adjusted, the poking blocks 12 do not need to be grabbed manually to prevent the clamping blocks 9 from rebounding, the working process of the worker is facilitated, the limiting mechanisms are arranged in the side walls of the bridge frames 1, the lower ends of the two adjacent bridge frames 1 are connected through the clamping mechanisms, each clamping mechanism comprises a clamping plate 14 fixedly arranged on the side wall of the lower end of one of, the clamping plate 14 is made of hard natural rubber, so that the clamping plate 14 has certain deformation capacity and can be correspondingly adjusted when the bridge frame 1 is bent, a matched clamping cavity 15 is arranged in the side wall of the lower end of the adjacent bridge frame 1, the clamping plate 14 extends into the clamping cavity 15, a second spring 16 is fixedly arranged between the clamping plate 14 and the bottom wall of the clamping cavity 15, a plurality of through holes 17 are vertically arranged on the clamping plate 14 in a penetrating manner, a threaded rod 18 is arranged in one through hole 17 in a penetrating manner, a matched threaded hole 19 is arranged on the side wall of the clamping cavity 15, the tail end thread of the threaded rod 18 is arranged in the threaded hole 19, the threaded hole 19 is arranged close to the opening of the clamping cavity 15, a turntable 20 is fixedly arranged at the other end of the threaded rod 18, a support plate 4 is fixedly arranged at the lower end of the individual bridge frame 1, a support rod 5 is fixedly arranged at, the clamping mechanism is arranged, so that when the bridge frame 1 is subjected to bending adjustment, the clamping plate 14 moves in the clamping cavity 15, and meanwhile, the clamping plate 14 is bent, so that bending between the bridge frames 1 is realized, meanwhile, under the elastic action of the second spring, the situation that the clamping plate 14 slides out of the clamping cavity 15 is effectively prevented, after the corresponding bending adjustment is carried out, the threaded rod 18 penetrates through the clamping plate 14 and is in threaded arrangement with the threaded hole 19, the bridge frame 1 is fixed, and further bending and even falling of the bridge frame 1 are prevented.
In use, when an obstacle is encountered and the obstacle needs to be bypassed, the threaded rod 18 is rotated out and taken down through the rotating disc 20, and then the dial block 12 is pulled, so that the strong magnets 13 on the sliding block 7 and the strong magnets 13 on the side wall of the sliding cavity 6 are adsorbed together, and at the moment, the angle between two adjacent bridges 1 is manually adjusted, so that finally a plurality of bridges 1 can jointly form an arc shape, after the angle is adjusted to the corresponding angle, the dial block 12 is stirred by hand, so that the slide block 7 slides in the slide cavity 6 under the action of the first spring 10, and finally, the clamping block 9 is pushed to be clamped on the gear 3 to prevent the gear from rotating, then the bent clamping plate 14 is penetrated through by a threaded rod 18 and is fixed in a threaded hole 19 in a threaded manner, the bridge frame is fixed, so that the bending of the bridge frame is prevented, and the collapse of the bridge frame with large span can be avoided to a certain extent.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (6)
1. The utility model provides a big span cable testing bridge of combination formula with adjustable, includes a plurality of crane span structures (1) that transverse connection set up, its characterized in that, two are adjacent the upper end of crane span structure (1) is rotated through pivot (2) and is connected the setting, fixed gear (3) that is equipped with on pivot (2), gear (3) and pivot (2) are for concentric rotation setting, the upper end of gear (3) still is equipped with assorted stop gear, stop gear sets up in the lateral wall of crane span structure (1), and two are adjacent the lower extreme of crane span structure (1) is connected the setting through clamping mechanism, individuality the lower extreme of crane span structure (1) is fixed and is equipped with backup pad (4), the lower extreme of backup pad (4) is fixed and is equipped with bracing piece (5), bracing piece (5) are at subaerial.
2. The adjustable combined type large-span cable bridge stand according to claim 1, wherein the limiting mechanism comprises a sliding cavity (6) fixedly arranged in the side wall of the bridge stand (1), a sliding block (7) is slidably arranged in the sliding cavity (6), a fixing rod (8) is fixedly arranged at one end, close to the gear (3), of the sliding block (7), a clamping block (9) is fixedly arranged at the tail end of the fixing rod (8), the clamping block (9) and the gear (3) are arranged in a matched and meshed manner, a first spring (10) is fixedly arranged on the side wall of the other side of the sliding block (7), the first spring (10) is fixedly arranged on the bottom wall of the sliding cavity (6), a connecting rod (11) is further fixedly arranged on the upper wall of the sliding block (7), and a shifting block (12) is fixedly arranged at the upper end of the connecting rod (11).
3. The adjustable combined type large-span cable bridge stand according to claim 1, wherein the clamping mechanism comprises a clamping plate (14) fixedly arranged on the side wall of the lower end of one bridge stand (1), a matched clamping cavity (15) is arranged in the side wall of the lower end of the adjacent bridge stand (1), the clamping plate (14) extends into the clamping cavity (15), a second spring (16) is fixedly arranged between the clamping plate (14) and the bottom wall of the clamping cavity (15), a plurality of through holes (17) vertically penetrate through the clamping plate (14), a threaded rod (18) penetrates through one of the through holes (17), a matched threaded hole (19) is arranged on the side wall of the clamping cavity (15), the tail end thread of the threaded rod (18) is arranged in the threaded hole (19), and the threaded hole (19) is arranged close to the opening of the clamping cavity (15), and a rotary table (20) is fixedly arranged at the other end of the threaded rod (18).
4. The adjustable combined type large-span cable bridge stand according to claim 2, wherein a strong magnet (13) is fixedly arranged in the lower end of the sliding block (7), a strong magnet (13) is correspondingly and fixedly arranged on the side wall of the sliding cavity (6), and the strong magnet (13) on the side wall of the sliding cavity (6) is arranged close to the bottom end of the sliding cavity (6).
5. The adjustable combined type large-span cable bridge stand according to claim 2, wherein the shifting block (12) is arranged in a spherical shape, and a rubber anti-skid block is sleeved on the shifting block (12).
6. An adjustable modular large span cable tray as defined in claim 3, wherein said clamping plate (14) is made of a relatively hard natural rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082006.XA CN112436454B (en) | 2020-10-12 | 2020-10-12 | Adjustable combined large-span cable bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082006.XA CN112436454B (en) | 2020-10-12 | 2020-10-12 | Adjustable combined large-span cable bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112436454A true CN112436454A (en) | 2021-03-02 |
| CN112436454B CN112436454B (en) | 2022-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011082006.XA Active CN112436454B (en) | 2020-10-12 | 2020-10-12 | Adjustable combined large-span cable bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112436454B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113746042A (en) * | 2021-10-11 | 2021-12-03 | 安徽精工电缆桥架有限公司 | Large-span assembled steel crane span structure |
| CN114336453A (en) * | 2021-12-27 | 2022-04-12 | 江苏瑞仕达电气设备有限公司 | Bridge for high-voltage cable |
| CN116581698A (en) * | 2023-04-24 | 2023-08-11 | 镇江市鑫泰绝缘材料有限公司 | Assembled mechanical interlocking fixed cable bridge and assembling method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007046764A (en) * | 2005-08-08 | 2007-02-22 | Ihara Science Corp | Holder for flexible member |
| CN203911394U (en) * | 2014-05-21 | 2014-10-29 | 安徽荣玖光纤通信科技有限公司 | Simple combined bridge |
| CN207475121U (en) * | 2017-11-30 | 2018-06-08 | 重庆飞泉物资有限公司 | A kind of bent crane span structure |
| CN207603130U (en) * | 2017-12-15 | 2018-07-10 | 邓伟超 | Novel cable bridge |
| CN109174574A (en) * | 2018-10-19 | 2019-01-11 | 嘉兴正野新材料有限公司 | A kind of automobile gear device for being adjusted by rotation uniform japanning |
| CN211371471U (en) * | 2019-12-30 | 2020-08-28 | 北京建院装饰工程设计有限公司 | Indoor pipeline frame that uses |
| CN211405358U (en) * | 2020-03-31 | 2020-09-01 | 泰州左岸信息科技有限公司 | Power transmission line protection bridge for weak current engineering construction |
-
2020
- 2020-10-12 CN CN202011082006.XA patent/CN112436454B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007046764A (en) * | 2005-08-08 | 2007-02-22 | Ihara Science Corp | Holder for flexible member |
| CN203911394U (en) * | 2014-05-21 | 2014-10-29 | 安徽荣玖光纤通信科技有限公司 | Simple combined bridge |
| CN207475121U (en) * | 2017-11-30 | 2018-06-08 | 重庆飞泉物资有限公司 | A kind of bent crane span structure |
| CN207603130U (en) * | 2017-12-15 | 2018-07-10 | 邓伟超 | Novel cable bridge |
| CN109174574A (en) * | 2018-10-19 | 2019-01-11 | 嘉兴正野新材料有限公司 | A kind of automobile gear device for being adjusted by rotation uniform japanning |
| CN211371471U (en) * | 2019-12-30 | 2020-08-28 | 北京建院装饰工程设计有限公司 | Indoor pipeline frame that uses |
| CN211405358U (en) * | 2020-03-31 | 2020-09-01 | 泰州左岸信息科技有限公司 | Power transmission line protection bridge for weak current engineering construction |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113746042A (en) * | 2021-10-11 | 2021-12-03 | 安徽精工电缆桥架有限公司 | Large-span assembled steel crane span structure |
| CN113746042B (en) * | 2021-10-11 | 2022-11-22 | 安徽精工电缆桥架有限公司 | Large-span assembled steel crane span structure |
| CN114336453A (en) * | 2021-12-27 | 2022-04-12 | 江苏瑞仕达电气设备有限公司 | Bridge for high-voltage cable |
| CN116581698A (en) * | 2023-04-24 | 2023-08-11 | 镇江市鑫泰绝缘材料有限公司 | Assembled mechanical interlocking fixed cable bridge and assembling method thereof |
| CN116581698B (en) * | 2023-04-24 | 2023-09-29 | 镇江市鑫泰绝缘材料有限公司 | Assembled mechanical interlocking fixed cable bridge and assembling method thereof |
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| Publication number | Publication date |
|---|---|
| CN112436454B (en) | 2022-06-24 |
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