A light adjusting device for sling tensioning and a suspension bridge

Abstract

The present invention discloses a lightweight adjusting device for sling tensioning and a suspension bridge in the field of sling tensioning adjustment. A cable clamp is provided on the main cable. One end of the sling is connected to the cable clamp through a sling anchor head, and the other end of the sling is connected to the main beam. The lightweight adjusting device is arranged between the main cable and the main beam. It is characterized in that the lightweight adjusting device includes a jack and two clamping plates for clamping the cable clamp; the cable clamp is arranged between the two clamping plates; a clamping groove is provided on the clamping plate, and both end portions of the sling anchor head are respectively embedded in the clamping grooves of the two clamping plates; the opening of the clamping groove faces the main beam; connecting pieces are arranged in parallel on both sides of the sling, the jack drives the connecting pieces to move along the axial direction of the sling, and the jack is arranged on the clamping plate; the connecting piece is connected to the fixing plate; the fixing plate is attached to the end face of the main beam on the side away from the main cable; by pulling the connecting pieces on both sides of the sling with the jack, the sling tension can be quickly adjusted. This device is simple to operate and has a wide application range.

Description

Technical Field

[0001] The present invention belongs to the technical field of sling tension adjustment, and particularly relates to a light adjustment device for sling tension and a suspension bridge. Background Art

[0002] The sling of a suspension bridge is one of the most critical load-bearing components of the suspension bridge. During the construction process of the suspension bridge, after the main girder construction is completed, the tensions of some slings are uneven. Therefore, considering the influence of the alignment and cable force comprehensively, it is necessary to adjust the sling force.

[0003] Currently, the relevant domestic technologies are all measures taken for sling replacement. The core of these measures requires adding additional temporary cable clamps and temporary slings on the main cable. The devices used are relatively complex, resulting in problems such as reduced working efficiency of sling adjustment, high labor intensity of workers, and high adjustment costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a light adjustment device for sling tension and a suspension bridge, which can solve the problem of adjusting the tension of rigid slings with a simple and lightweight device.

[0005] To achieve the above object, on the one hand, the technical solution adopted by the present invention is as follows:

[0006] A light adjustment device for sling tension. A cable clamp is provided on the main cable. One end of the sling is connected to the cable clamp through a sling anchor head, and the other end of the sling is fixedly arranged on the main girder. The light adjustment device is arranged between the main cable and the main girder. The light adjustment device includes a jack and two clamping plates for clamping the cable clamp; the cable clamp is arranged between the two clamping plates; the clamping plates are provided with card slots, and both ends of the sling anchor head are respectively embedded in the card slots of the two clamping plates; the opening of the card slot faces the main girder.

[0007] Connectors are arranged in parallel on both sides of the sling. The jack drives the connectors to move along the axial direction of the sling. The jack is arranged on the clamping plate; the connectors are connected to the fixing plate; the fixing plate is attached to the end face of the main girder on the side away from the main cable.

[0008] Preferably, the jack is a through-hole jack; one end of the connector passes through the jack and is connected to a first nut; the other end of the connector passes through the fixing plate and is connected to a second nut.

[0009] Preferably, the clamping plate is provided with a plurality of first pins for fixing the jack. The first pins are arranged on the side of the jack close to the main girder; a support plate for supporting the jack is arranged between the first pins and the jack.

[0010] Preferably, a plurality of second pins are provided on the clamping plates; the first pin and the second pins pass through the two clamping plates and are connected to a third nut, and the third nut is rotated to adjust the clamping force of the two clamping plates on the cable clamp.

[0011] Preferably, a top plate and a gasket are provided between the first nut and the jack; the first nut, the gasket, the top plate and the jack are sequentially and mutually attached.

[0012] Preferably, a backing plate and a spacer are provided between the second nut and the fixing plate; the fixing plate, the backing plate, the spacer and the second nut are sequentially and mutually attached.

[0013] Preferably, the connecting member is a deformed bar.

[0014] Preferably, a stress sensor is further included; the stress sensor is arranged on the sling; the stress sensor is electrically connected to an external computer.

[0015] A suspension bridge includes a main cable and a main beam; the light regulating device is provided between the main cable and the main beam.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0017] In the present invention, the light regulating device includes a jack and two clamping plates for clamping a cable clamp: the cable clamp is arranged between the two clamping plates; a clamping groove is provided on the clamping plate, and both ends of the sling anchor head are respectively embedded in the clamping grooves of the two clamping plates; the opening of the clamping groove faces the main beam; the sling anchor head is prevented from separating from the clamping groove through the clamping action of the clamping plate, and a stress application position is provided by respectively embedding both ends of the sling anchor head in the clamping grooves of the two clamping plates. This structure is simple, convenient to clamp, and firmly fixed, and can improve the adjustment efficiency of the sling.

[0018] In the present invention, connecting members are arranged in parallel on both sides of the sling, the jack drives the connecting members to move along the axial direction of the sling, and the jack is arranged on the clamping plate; the connecting members are connected to the fixing plate; the connecting members are connected to the fixing plate; the fixing plate is attached to the end face of the main beam on the side away from the main cable; by pulling the connecting members on both sides of the sling with the jack, the sling tension can be quickly adjusted. This device is simple to operate and has a wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a structural diagram of a light regulating device for sling tension provided by an embodiment of the present invention;

[0020] Figure 2 is a connection relationship diagram of the sling and the main cable provided by an embodiment of the present invention;

[0021] Figure 3 is a connection relationship diagram of the clamping plate and the cable clamp provided by an embodiment of the present invention;

[0022] Figure 4 This is a connection relationship diagram of the fixed plate and the main beam provided by an embodiment of the present invention.

[0023] In the figure: 1 clamping plate, 2 second pin, 3 first pin, 4 gasket, 5 jack, 6 support plate, 7 connecting piece, 8 top plate, 9A first nut, 9B second nut, 9C third nut, 10 backing plate, 11 fixed plate, 12 cable clamp, 13 sling, 14 sling anchor head, 15 main cable, 16 stress sensor, 17 spacer, 18 main beam, 19 card slot. Specific embodiments

[0024] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0025] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and does not require the present invention to be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. The terms "front", "rear", "left", "right", "upper", "lower" used in the description of the present invention refer to the directions in the accompanying drawings, and the terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0026] Embodiment 1

[0027] As Figures 1-4 shown, a light adjustment device for sling tensioning. A cable clamp 12 is provided on the main cable 15. One end of the sling 13 is provided with a sling anchor head 14. The sling anchor head 14 is connected to the cable clamp 12 through a pin shaft. The other end of the sling 13 is fixed to the main beam 18. The light adjustment device is arranged between the main cable 15 and the main beam 18. The light adjustment device includes a stress sensor 16, a jack 5, and two clamping plates 1 for clamping the cable clamp 12. The stress sensor 16 is arranged on the sling 13. The stress sensor 16 is electrically connected to an external computer. By monitoring the internal stress of the sling 13 through the stress sensor 16 and displaying it through the external computer, it can assist the staff in adjusting the sling.

[0028] The cable clamp 12 is arranged between the two clamping plates 1. The clamping plate 1 is provided with a card slot 19. The two end parts of the sling anchor head 14 are respectively embedded in the card slots 19 of the two clamping plates 1. The opening of the card slot 19 faces the main beam 18, forming the force-bearing part of the light adjustment device and the main cable 15. By respectively embedding the two end parts of the sling anchor head in the card slots of the two clamping plates to provide a force-bearing position, the structure is simple, the clamping is convenient, and the fixation is reliable, which can improve the adjustment efficiency of the sling.

[0029] The jack 5 is arranged between the two clamping plates 1; a plurality of first pins 3 for fixing the jack are provided on the clamping plate 1, and the first pins 3 are arranged on the side of the jack 5 close to the main beam 18; a support plate 6 for supporting the jack is arranged between the first pin 3 and the jack 5; a plurality of second pins 2 are provided on the clamping plate 1; the first pins 3 and the second pins 2 pass through the two clamping plates 1 and are connected to the third nut 9C. Rotating the third nut 9C adjusts the clamping force of the two clamping plates 1 on the cable clamp 12, and the clamping action of the first pins 3 and the second pins 2 prevents the sling anchor head 14 from detaching from the card slot 19.

[0030] Connectors 7 are arranged in parallel on both sides of the sling 13. The connectors 7 are threaded steel bars. The structure of the connectors 7 is not limited to threaded steel bars and can also be metal tie rods; the jack 5 is a through-type jack; one end of the connector 7 passes through the jack 5 and is connected to the first nut 9A. A top plate 8 and a gasket 4 are arranged between the first nut 9A and the jack 5. The first nut 9A, the gasket 4, the top plate 8 and the jack 5 are sequentially and mutually attached. Buffering is carried out through the gasket 4 and the top plate 8 and the stress-bearing area is increased; the jack 5 drives the connector 7 to move axially along the sling 13.

[0031] The other end of the connector 7 passes through the fixing plate 11 and is connected to the second nut 9B. A backing plate 10 and a spacer 17 are arranged between the second nut 9B and the fixing plate 11. The fixing plate 11, the backing plate 10, the spacer 17 and the second nut 9B are sequentially and mutually attached; buffering is carried out through the backing plate 10 and the spacer 17 and the stress-bearing area is increased; the fixing plate 11 passes from one side of the main beam 18 to the other side of the main beam 18, and the fixing plate 11 is attached to the end face of the main beam 18 away from the main cable. This structure is simple and convenient to fix; the two connectors 7 are respectively connected to both ends of the fixing plate 11; the connector 7 pulls the fixing plate 11 to make the fixing plate 11 press against the main beam 18, forming a force-bearing part of the light adjusting device and the main beam 18.

[0032] Working principle: The staff installs the light adjusting device between the main cable 15 and the main beam 18; monitors the internal stress of the sling 13 through the stress sensor 16. The staff adjusts the extension length of the jack according to the monitored internal stress of the sling 13; the jack 5 pushes the connector 7 to move axially along the sling through the first nut; the connector 7 pulls the fixing plate 11 to make the fixing plate 11 press against the main beam 18; measures the change amount of the sling stress through the stress sensor 16 until the theoretical stress change amount is reached, and then stops loading the jack 5; adjusts the nut at the lower end of the sling to complete the adjustment of the sling force.

[0033] Embodiment 2

[0034] A suspension bridge, comprising a main cable 15, a cable clamp 12, a suspension cable 13 and a main beam 18 which are connected in sequence; a light regulating device as described in the first embodiment is provided between the main cable 15 and the main beam 18.

[0035] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A lightweight adjusting device for sling tensioning. A cable clip (12) is provided on the main cable (15). One end of the sling (13) is connected to the cable clip (12) through a sling anchor head (14), and the other end of the sling (13) is fixedly arranged on the main beam (18). The lightweight adjusting device is arranged between the main cable (15) and the main beam (18), and is characterized in that, The light adjustment device comprises a jack (5) and two clamping plates (1) for clamping a cable clamp; the cable clamp (12) is arranged between the two clamping plates (1); a clamping groove (19) is provided on the clamping plate (1), and two ends of the sling anchor head (14) are respectively embedded in the clamping grooves (19) of the two clamping plates (1); the opening of the clamping groove (19) faces the main beam (18); Connecting pieces (7) are arranged in parallel on both sides of the sling (13); the jack (5) drives the connecting piece (7) to move along the axial direction of the sling; the jack (5) is arranged on the clamping plate (1); a plurality of first latches (3) for fixing the jacks are arranged on the clamping plate (1); the first latches (3) are arranged on a side of the jack (5) close to the main beam (18); a support plate (6) for supporting the jacks is arranged between the first latches (3) and the jacks (5); The clamping plate (1) is provided with a plurality of second latches (2); the first latches (3) and the second latches (2) are connected to a third nut (9C) after passing through the two clamping plates, and the third nut (9C) is rotated to adjust the clamping force of the two clamping plates (1) on the cable clamp (12); The connecting member (7) is connected to the fixing plate (11); the fixing plate (11) is in contact with the end surface of the main beam (18) away from the main cable; a pad (10) and a pad block (17) are provided between the second nut (9B) and the fixing plate (11); the fixing plate (11), the pad (10), the pad block (17) and the second nut (9B) are sequentially arranged in contact with each other.

2. The light-adjusting device for sling tensioning according to claim 1, characterized in that, The jack (5) is a through-type jack; one end of the connecting piece (7) passes through the jack (5) and is connected to the first nut (9A); the other end of the connecting piece (7) passes through the fixing plate and is connected to the second nut (9B).

3. A light adjusting device for sling tensioning according to claim 1, characterized in that, A top plate (8) and a gasket (4) are provided between the first nut (9A) and the jack (5); the first nut (9A), the gasket (4), the top plate (8) and the jack (5) are arranged in sequence to fit each other.

4. A light adjusting device for sling tensioning according to claim 1, characterized in that The connecting piece (7) is threaded steel.

5. A light adjusting device for sling tensioning according to claim 1, characterized in that, It also includes a stress sensor (16); the stress sensor (16) is arranged on the sling (13); and the stress sensor (16) is electrically connected to an external computer.

6. A suspension bridge, comprising a main cable (15) and a main girder (18); characterized in that, A lightweight adjustment device according to any one of claims 1 to 5 is provided between the main cable (15) and the main beam (18).

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