Compensation expansion device used for bridge cable laying

Abstract

The invention relates to the technical field of compensation telescopic devices, discloses a compensation telescopic device for bridge cable laying, and solves the problems that an existing bridge cable compensation telescopic device does not have a contraction locking function, so that the compensation telescopic device can stretch and extend in the transportation process, and the transportation space is greatly occupied. The device comprises a spiral telescopic cable, an upper cable connector is fixedly installed at the upper end of the spiral telescopic cable, a lower cable connector is fixedly installed at the lower end of the spiral telescopic cable, an upper supporting disc is fixedly installed on the surface of the upper cable connector, and a lower supporting disc is fixedly installed on the surface of the lower cable connector. Two mounting holes are symmetrically formed in the surface of the upper supporting disc, inserting rods are arranged in the two mounting holes, and fixing pull rings are fixedly mounted at the tops of the inserting rods; the bridge cable compensation telescopic device has a contraction locking function, and the compensation telescopic device is prevented from stretching and extending in the transportation process, so that the transportation space is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of compensating expansion and contraction devices, and in particular relates to a compensating expansion and contraction device used for laying bridge cables. Background Art

[0002] The compensating expansion and contraction device for cable laying on bridges is a device used to eliminate excessive tension in cables caused by movement and bending of the bridge deck, etc., to ensure the safe operation of the cables. There are various types of compensating expansion and contraction devices, including fastening type, sliding type, expansion and contraction type, spring type, etc., as well as bridge-mounted cable compensating expansion and contraction devices specially used for high-voltage cable laying. The specific application needs to be selected according to factors such as bridge type, cable specifications and laying environment. The existing compensating expansion and contraction devices for bridge cables do not have a retraction and locking function, which causes the compensating expansion and contraction devices to stretch and extend during transportation, thereby greatly occupying the transportation space. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a compensating telescopic device for laying bridge cables, which effectively solves the problem that the existing bridge cable compensating telescopic device does not have a retraction and locking function, resulting in the compensating telescopic device extending during transportation, thereby greatly occupying the transportation space.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a compensating telescopic device for laying bridge cables, comprising a spiral telescopic cable, an upper cable connector is fixedly installed on the upper end of the spiral telescopic cable, a lower cable connector is fixedly installed on the lower end of the spiral telescopic cable, an upper support plate is fixedly installed on the surface of the upper cable connector, and a lower support plate is fixedly installed on the surface of the lower cable connector, two mounting holes are symmetrically provided on the surface of the upper support plate, plug rods are provided inside the two mounting holes, and fixed pull rings are fixedly installed on the tops of the plug rods, two limit strips are symmetrically fixedly installed on the lower ends of the surfaces of the two plug rods, two connecting holes are symmetrically provided on the surface of the lower support plate, and mounting blocks are fixedly installed inside the two connecting holes, plug holes are provided in the middle parts of the two mounting blocks, the two plug holes match the two plug rods, the inner walls of the two plug holes are symmetrically provided with two strip grooves, the four strip grooves match the four limit strips, and both sides of the bottoms of the two mounting blocks are provided with limit slots, and the four limit slots match the four limit strips.

[0005] Preferably, a rotating sleeve is fixedly installed inside the mounting holes, and two rotating sleeves are rotatably installed on the surfaces of the two plug-in rods respectively.

[0006] Preferably, pushing sleeves are fixedly installed on both sides of the upper part of the upper support plate, and positioning slide bars are fixedly installed on both sides of the top of the lower support plate, and the two pushing sleeves match the two positioning slide bars.

[0007] Preferably, the upper ends of the two positioning slide rod surfaces are movably sleeved with positioning sleeves, and the lower parts of the two positioning sleeve surfaces are fixedly mounted with connecting rings, and the diameters of the two connecting rings are larger than the diameters of the two pushing sleeves.

[0008] Preferably, telescopic springs are sleeved on the surfaces of the two positioning slide bars, and both ends of the two telescopic springs are fixedly connected to the lower side of the connecting ring and the top of the lower supporting plate respectively.

[0009] Compared with the prior art, the invention has the following beneficial effects: when in use, the operator drives the upper cable connector and the lower cable connector to move toward each other and push the spiral telescopic cable to contract. When the upper cable connector and the lower cable connector move toward each other, the upper support plate drives the two plug-in rods to be inserted into the plug-in holes in the middle of the two mounting blocks inside the two connecting holes, and at the same time, the two pushing sleeves are sleeved onto the surfaces of the two positioning slide bars, and the two positioning slide bars are driven to slide downward along the surfaces of the two positioning slide bars by pushing the two connecting rings, and at the same time, the two telescopic springs are squeezed;

[0010] When the two connecting rods are inserted into the two connecting holes, the four limit bars will slide along the inside of the four bar grooves. When the four limit bars move to the lower part of the two mounting blocks, the operator rotates the two connecting rods through the two fixed pull rings, thereby driving the four limit bars to align with the four limit grooves. Then the operator loosens the two fixed pull rings, thereby driving the upper support plate to move upward through the two pushing sleeves under the elastic force of the two telescopic springs. When the upper support plate moves upward, the four limit bars will be driven by the two connecting rods to be stuck in the inside of the four limit grooves for limiting, so that the device as a whole can be retracted and locked; this enables the cable compensation and telescopic device of the bridge to have a retraction and locking function, thereby preventing the compensation and telescopic device from stretching and extending during transportation, thereby saving transportation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0012] In the attached picture:

[0013] Figure 1 The structure of the compensating expansion device used for laying bridge cables of the present invention is shown in FIG. Figure 1 ;

[0014] Figure 2 The structure of the compensating expansion device used for laying bridge cables of the present invention is shown in FIG. Figure 2 ;

[0015] Figure 3 The structure of the compensating expansion device used for laying bridge cables of the present invention is shown in FIG. Figure 3 ;

[0016] Figure 4 This is a schematic diagram of the internal structure of the lower cable connector of the present invention;

[0017] Figure 5 This is a schematic diagram of the installation block structure of the present invention;

[0018] In the figure: 1. spiral telescopic cable; 2. upper cable connector; 3. lower cable connector; 4. upper support plate; 5. lower support plate; 6. mounting hole; 7. rotating shaft sleeve; 8. plug-in rod; 9. limit strip; 10. fixed pull ring; 11. connecting hole; 12. mounting block; 13. plug-in hole; 14. strip groove; 15. limit groove; 16. pushing sleeve; 17. positioning slide rod; 18. positioning slide sleeve; 19. connecting ring; 20. telescopic spring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] Depend on Figures 1 to 5 The present invention comprises a spiral telescopic cable 1, an upper cable connector 2 is fixedly installed at the upper end of the spiral telescopic cable 1, a lower cable connector 3 is fixedly installed at the lower end of the spiral telescopic cable 1, an upper support plate 4 is fixedly installed on the surface of the upper cable connector 2, a lower support plate 5 is fixedly installed on the surface of the lower cable connector 3, two mounting holes 6 are symmetrically opened on the surface of the upper support plate 4, plug rods 8 are arranged inside the two mounting holes 6, fixed pull rings 10 are fixedly installed on the tops of the plug rods 8, and the lower ends of the surfaces of the two plug rods 8 are symmetrically Two limit bars 9 are fixedly installed, and two connection holes 11 are symmetrically provided on the surface of the lower support plate 5. A mounting block 12 is fixedly installed inside the two connection holes 11. A plug hole 13 is provided in the middle of the two mounting blocks 12. The two plug holes 13 match the two plug rods 8. The inner walls of the two plug holes 13 are symmetrically provided with two strip grooves 14. The four strip grooves 14 match the four limit bars 9. Limit grooves 15 are provided on both sides of the bottom of the two mounting blocks 12. The four limit grooves 15 match the four limit bars 9.

[0021] Pushing sleeves 16 are fixedly installed on both sides of the upper part of the upper support plate 4, and positioning slide bars 17 are fixedly installed on both sides of the top of the lower support plate 5, and the two pushing sleeves 16 match the two positioning slide bars 17; the upper end parts of the surfaces of the two positioning slide bars 17 are movably sleeved with positioning sleeves 18, and the lower parts of the surfaces of the two positioning slide bars 18 are fixedly installed with connecting rings 19, and the diameters of the two connecting rings 19 are larger than the diameters of the two pushing sleeves 16; the surfaces of the two positioning slide bars 17 are sleeved with telescopic springs 20, and the two ends of the two telescopic springs 20 are respectively fixedly connected to the lower side of the connecting ring 19 and the top of the lower support plate 5.

[0022] When in use, the operator drives the upper cable connector 2 and the lower cable connector 3 to move toward each other and push the spiral telescopic cable 1 to contract. When the upper cable connector 2 and the lower cable connector 3 move toward each other, the upper support plate 4 drives the two plug-in rods 8 to be inserted into the plug-in holes 13 in the middle of the two mounting blocks 12 inside the two connecting holes 11, and at the same time, the two pushing sleeves 16 are sleeved onto the surfaces of the two positioning slide bars 17, and the two positioning slides 18 are driven to slide down along the surfaces of the two positioning slide bars 17 by pushing the two connecting rings 19, and at the same time, the two telescopic springs 20 are squeezed;

[0023] When the two connecting rods 8 are inserted into the two connecting holes 13, the four limit strips 9 will slide along the inside of the four strip grooves 14. When the four limit strips 9 move to the lower part of the two mounting blocks 12, the operator rotates the two connecting rods 8 through the two fixed pull rings 10, thereby driving the four limit strips 9 to align with the four limit grooves 15. Then the operator loosens the two fixed pull rings 10, thereby driving the upper support plate 4 to move upward through the two pushing sleeves 16 under the elastic force of the two telescopic springs 20. When the upper support plate 4 moves upward, the four limit strips 9 will be driven by the two connecting rods 8 to be stuck in the inside of the four limit grooves 15 for limiting, so that the device can be retracted and locked as a whole; this enables the cable compensation and telescopic device of the bridge to have a retraction and locking function, thereby preventing the compensation and telescopic device from stretching and extending during transportation, thereby saving transportation space.

[0024] The inside of the mounting holes 6 are fixedly mounted with rotating sleeves 7, and the two rotating sleeves 7 are rotatably mounted on the surfaces of the two plug-in rods 8 respectively;

[0025] When the two plug-in rods 8 rotate, they will rotate along the inside of the two rotating sleeves 7, thereby improving the stability of the two plug-in rods 8 when rotating.

Claims

1. A compensating telescopic device for laying bridge cables, comprising a spiral telescopic cable (1), characterized in that: An upper cable connector (2) is fixedly mounted on the upper end of the spiral telescopic cable (1), a lower cable connector (3) is fixedly mounted on the lower end of the spiral telescopic cable (1), an upper support plate (4) is fixedly mounted on the surface of the upper cable connector (2), a lower support plate (5) is fixedly mounted on the surface of the lower cable connector (3), two mounting holes (6) are symmetrically arranged on the surface of the upper support plate (4), plug rods (8) are arranged inside the two mounting holes (6), a fixed pull ring (10) is fixedly mounted on the top of the plug rods (8), and two limit stoppers (10) are symmetrically fixedly mounted on the lower ends of the surfaces of the two plug rods (8). The lower support plate (5) is provided with two connection holes (11) symmetrically, and mounting blocks (12) are fixedly installed inside the two connection holes (11). The middle parts of the two mounting blocks (12) are provided with plug-in holes (13), and the two plug-in holes (13) match the two plug-in rods (8). The inner walls of the two plug-in holes (13) are provided with two strip grooves (14) symmetrically, and the four strip grooves (14) match the four limit strips (9). The two sides of the bottom of the two mounting blocks (12) are provided with limit grooves (15), and the four limit grooves (15) match the four limit strips (9).

2. The compensating expansion device for laying bridge cables according to claim 1 is characterized in that: A rotating sleeve (7) is fixedly installed inside the mounting hole (6), and the two rotating sleeves (7) are rotatably mounted on the surfaces of the two plug-in rods (8) respectively.

3. The compensating expansion and contraction device for laying bridge cables according to claim 1 is characterized in that: Pushing sleeves (16) are fixedly installed on both sides of the upper part of the upper support plate (4), and positioning slide bars (17) are fixedly installed on both sides of the top of the lower support plate (5), and the two pushing sleeves (16) match the two positioning slide bars (17).

4. The compensating expansion and contraction device for laying bridge cables according to claim 3 is characterized in that: The upper ends of the surfaces of the two positioning slide bars (17) are movably sleeved with positioning slide sleeves (18), and the lower parts of the surfaces of the two positioning slide sleeves (18) are fixedly mounted with connecting rings (19), and the diameters of the two connecting rings (19) are larger than the diameters of the two pushing sleeves (16).

5. The compensating expansion and contraction device for laying bridge cables according to claim 4 is characterized in that: The surfaces of the two positioning slide bars (17) are sleeved with telescopic springs (20), and both ends of the two telescopic springs (20) are respectively fixedly connected to the lower side of the connecting ring (19) and the top of the lower support plate (5).

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