Steel cable tensioning device for steel frame bridge

Abstract

The utility model provides a steel cable tensioning device for a steel frame bridge, and relates to the technical field of steel cable tensioning devices, the steel cable tensioning device comprises a sliding rail, a connecting plate is connected in the sliding rail in a sliding mode, a first threaded rod is rotatably inserted in the inner side face of the sliding rail in a penetrating mode, and the first threaded rod is inserted in the side face of the connecting plate in a penetrating mode in a threaded mode. When the fixing device is used, a steel cable is inserted into a connecting cylinder firstly, then a first bolt is rotated, then a second semicircular plate is made to be close to a first semicircular plate, the first semicircular plate is made to be close to the first semicircular plate, and the second semicircular plate is made to be close to the second semicircular plate; according to the tensioning device for the steel cables, the steel cables are fixed into the connecting cylinder through the first semicircular plate and the second semicircular plate, then the steel cables of different models can be well fixed into the connecting cylinder, in this way, the steel cables of different models can be fixed through the same tensioning device, and resource waste is reduced to a certain degree.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel frame bridge accessories, and in particular relates to a steel cable tensioning device used for a steel frame bridge. Background Art

[0002] The steel cables in the steel frame bridge can play the role of pulling up the weight of the bridge deck. Once the steel cables are too loose, it will cause unpredictable adverse effects on the strength of the bridge deck itself and the load-bearing strength. The steel cable tensioning device is a device used to tighten the steel cables when building a steel frame bridge. When used, it is fixedly connected to the steel frame bridge through the top, and then the steel cables are sent into it to tighten the steel cables.

[0003] The steel cable tensioning device in the prior art, on the one hand, can only tighten steel cables of specific models and sizes, and has a limited scope of application; on the other hand, it cannot effectively protect the steel cable while tightening it, making it easy for the exposed steel cable to come into contact with excessive moisture in the air, causing the tensioned part to rust, posing a safety hazard.

[0004] Therefore, it is urgent to provide a steel cable tensioning device for steel frame bridges to solve the defects and shortcomings of the above-mentioned prior art. Utility Model Content

[0005] In order to solve the defects and shortcomings in the prior art, the utility model proposes a steel cable tensioning device for a steel frame bridge.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A steel cable tensioning device for a steel frame bridge comprises a slide rail, characterized in that: a first threaded rod is rotatably provided inside the slide rail, the threads on both sides of the first threaded rod are in opposite directions, the bottoms of two connecting plates are threadedly connected to the first threaded rod, and the tops are threadedly connected to the second threaded rod, a nut is fixed to one end of the second threaded rod, a third threaded rod is rotatably inserted into the bottom of the slide rail, a connecting tube is threadedly matched with the third threaded rod, a fixing device is provided on the side of the connecting tube, and a protective device is provided on the periphery of the connecting tube.

[0008] As a further preferred embodiment of the utility model, the fixing device includes a first semicircular plate, which is fixedly connected to the inner wall of one side of the connecting tube, and a first bolt is threaded through the other side surface of the connecting tube, and the first bolt is inserted into one end of the connecting tube and is rotatably connected to a second semicircular plate.

[0009] As a further preferred embodiment of the present invention, a limiting rod is passed through the side thread of the connecting tube, and the limiting rod penetrates one end of the connecting tube and can cooperate with the side limiting portion of the second semicircular plate.

[0010] As a further preferred embodiment of the present utility model, the inner walls of the first semicircular plate and the second semicircular plate are both fixedly provided with barbs.

[0011] As a further preferred embodiment of the present invention, a circular ring is fixedly connected to the inner top of the connecting tube, a second bolt is inserted through the side thread of the connecting tube, and the second bolt is inserted into one end of the connecting tube and fixedly connected with a conical block, and the conical block can extend into the interior of the circular ring and cooperate with it.

[0012] As a further preferred embodiment of the present invention, the protection device comprises a protection tube, and the protection tube is sleeved on the outer circumference of the connecting tube.

[0013] As a further preferred embodiment of the utility model, the bottom of the slide rail is fixedly connected to a fixed circular plate, the side of the fixed circular plate is fixed to a support bar, the internal thread of the support bar is inserted with a third bolt, and the third bolt thread is inserted into the side of the protective tube.

[0014] As a further preferred embodiment of the present invention, a first rubber ring is fixed to the bottom of the fixed circular plate, and a second rubber ring is fixed to the top of the protective tube.

[0015] As a further preferred embodiment of the utility model, an extension tube is slidably inserted into the bottom of the protective tube, a fixing rod is slidably inserted into the side of the protective tube, and the fixing rod is threadedly inserted into the side of the extension tube.

[0016] As a further preferred embodiment of the utility model, an elastic member is sleeved on the outer periphery of the fixing rod, one end of the elastic member is fixedly connected to the end of the fixing rod, and one end of the elastic member away from the end of the fixing rod is fixedly connected to the side of the protective tube.

[0017] Compared with the prior art, the beneficial effects achieved by the utility model include:

[0018] 1) The utility model provides a steel cable tensioning device for a steel frame bridge. By setting a fixing device, when using the fixing device, first insert the steel cable into the interior of a connecting tube, then rotate the first bolt, thereby making the second semicircular plate close to the first semicircular plate, and then fix the steel cable in the interior of the connecting tube through the first semicircular plate and the second semicircular plate. By adjusting the spacing between the first semicircular plate and the second semicircular plate, it can be adapted to steel cables of different models and sizes, thereby increasing the scope of application and improving the applicability.

[0019] 2) The utility model provides a steel cable tensioning device for a steel frame bridge. By arranging a protective device, the steel cable tensioning part is arranged inside the protective device, thereby reducing the rusting of the tensioning part of the steel cable due to excessive contact with moisture in the air, thereby further reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model provides a three-dimensional structural schematic diagram of a steel cable tensioning device for a steel frame bridge;

[0021] Figure 2 The three-dimensional structural schematic diagram of the novel barb proposed in the utility model;

[0022] Figure 3 The three-dimensional structural diagram of the novel circular ring proposed in the utility model;

[0023] Figure 4 The utility model provides a three-dimensional structural schematic diagram of a novel protective tube.

[0024] Legend: 1. Slide rail; 2. Connecting plate; 3. First threaded rod; 4. Third threaded rod; 5. Connecting tube; 6. Second threaded rod; 7. Fixing device; 701. First semicircular plate; 702. First bolt; 703. Second semicircular plate; 704. Barb; 705. Limiting rod; 706. Second bolt; 707. Conical block; 708. Ring; 8. Protective device; 801. Fixed circular plate; 802. Protective tube; 803. Extension tube; 804. Fixed rod; 805. Elastic member; 806. Second rubber ring; 807. First rubber ring; 808. Support bar; 809. Third bolt; 9. Nut. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] [First embodiment]

[0029] like Figure 1-4 The first embodiment of the utility model is shown, which provides a cable tensioning device for a steel bridge, including a slide rail 1, characterized in that: a first threaded rod 3 is rotatably provided inside the slide rail 1, and the threads on both sides of the first threaded rod 3 are in opposite directions. The bottoms of the two connecting plates 2 are threadedly connected to the first threaded rod 3, and the two connecting plates 2 thereon can be moved closer to or farther away from each other by rotating the first threaded rod 3, thereby realizing the clamping or releasing operation of the fixed end of the top steel bridge. The tops of the two connecting plates 2 are threadedly connected to the second threaded rod 6, and a nut 9 is fixed at one end of the second threaded rod 6. By operating the nut 9 to rotate the second threaded rod 6, the second threaded rod 6 can be passed through the tops of the two connecting plates 2 and the fixed end of the steel bridge, thereby realizing the fixed connection between the top of the tensioning device and the steel bridge; a third threaded rod 4 is rotatably inserted at the bottom of the slide rail 1, and the connecting tube 5 is threadedly matched with the third threaded rod 4. The connecting tube 5 can be raised to the periphery of the cable tensioning position through the third threaded rod 4, and while adjusting the tensioning force of the cable, the cable tensioning position is effectively protected. A fixing device 7 is provided on the side of the connecting tube 5, and a protective device 8 is provided on the outer periphery of the connecting tube 5. By providing the fixing device, the tensioning device can be adapted to steel cables of different models and sizes, thereby increasing the scope of application and improving the applicability. By providing the protective device, the tensioning part of the steel cable can be arranged inside the protective device, thereby reducing the risk of rust on the tensioning part of the steel cable due to excessive contact with moisture in the air, thereby further reducing safety hazards.

[0030] Specifically, Figure 2 As shown, the fixing device 7 in this embodiment includes a first semicircular plate 701, which is fixedly connected to the inner wall of one side of the connecting tube 5, and a first bolt 702 is threaded through the other side surface of the connecting tube 5. The first bolt 702 penetrates into one end of the connecting tube 5 and is rotatably connected to the second semicircular plate 703. By rotating the first bolt 702, the second semicircular plate 703 can be controlled to approach or move away from the first semicircular plate 701, and then by adjusting the spacing between the first semicircular plate and the second semicircular plate, steel cables of different models and sizes can be clamped inside the connecting tube, thereby increasing the scope of application.

[0031] Preferably, the side thread of the connecting tube 5 passes through a limiting rod 705, and the limiting rod 705 passes through one end of the connecting tube 5 and can cooperate with the side limiting function of the second semicircular plate 703. When the first bolt is rotated to squeeze the second semicircular plate, the limiting rod 705 can generate a corresponding limiting effect on the second semicircular plate.

[0032] Furthermore, if Figure 2 As shown, barbs 704 are fixedly provided on the inner walls of the first semicircular plate 701 and the second semicircular plate 703. The barbs can be provided to stably fix the steel cable between the first semicircular plate and the second semicircular plate to avoid unexpected relative sliding of the steel cable and the first semicircular plate and the second semicircular plate on both sides.

[0033] like Figure 3 As shown, a circular ring 708 is fixedly connected to the top of the inner side of the connecting tube 5 in this embodiment, and a second bolt 706 is inserted through the side thread of the connecting tube 5. The second bolt 706 is inserted into one end of the connecting tube 5 and is fixedly connected with a conical block 707. The conical block 707 can extend into the interior of the circular ring 708 and cooperate with it. The steel cable is inserted into the interior of the circular ring 708 from one side, so that the steel cable bypasses the circular ring and then passes out from the other side of the circular ring 708. Then, the second bolt is rotated to squeeze the conical block into the interior of the circular ring, so that the steel cable can be stably squeezed inside the circular ring 708.

[0034] like Figure 4 As shown, the protective device 8 in this embodiment includes a protective tube 802, which is sleeved on the outer periphery of the connecting tube 5, and a fixed circular plate 801 is fixedly connected to the bottom of the slide rail 1, and a support bar 808 is fixed to the side of the fixed circular plate 801. The internal thread of the support bar 808 is inserted with a third bolt 809, and the third bolt 809 is threadedly inserted into the side of the protective tube 802. The third bolt 809 is rotated to control the third bolt 809 to pass through the support bar 808 and the protective tube 802 in sequence, thereby fixing the protective tube 802 to the bottom of the fixed circular plate 801.

[0035] As a preferred embodiment of the present invention, a first rubber ring 807 is fixed to the bottom of the fixed circular plate 801, and a second rubber ring 806 is fixed to the top of the protective tube 802. The first rubber ring and the second rubber ring are in close contact with each other to achieve effective sealing, thereby further preventing moisture from flowing from the connection into the interior of the protective tube and adversely affecting the tensioning position of the steel cable.

[0036] In addition, an extension tube 803 is slidably inserted into the bottom of the protective tube 802, and a fixing rod 804 is slidably inserted into the side of the protective tube 802. The fixing rod 804 is threadedly inserted into the side of the extension tube 803, and preferably, an elastic member 805 is sleeved on the outer periphery of the fixing rod 804, one end of the elastic member 805 is fixedly connected to the end of the fixing rod 804, and one end of the elastic member 805 away from the end of the fixing rod 804 is fixedly connected to the side of the protective tube 802. The elastic member 805 uses a tension spring to withstand axial tension. When the extension tube 803 has not slid to a preset position relative to the protective tube 802, the fixing rod 804 is stretched outward and drives the elastic member 805 to stretch synchronously. When the extension tube 803 slides to a preset position relative to the protective tube 802, the fixing rod 804 extends into the interior of the protective tube 802 under the elastic reset action of the elastic member 805, so as to realize the positioning of the extension tube 803 relative to the protective tube 802.

[0037] Specific work:

[0038] When fixing with the fixed end of the steel bridge, first rotate the first threaded rod 3, through the opposite thread directions on both sides of the surface of the first threaded rod 3, so that the two connecting plates 2 are close to each other and close to the top fixed end of the steel bridge, and then the second threaded rod 6 is sequentially threaded through and inserted into the top of the connecting plate 2 and the fixed end of the steel bridge to fix the tensioning device to the fixed end of the steel bridge, and then rotate the third threaded rod 4 so that the bottom of the tensioning device gradually approaches the position where the tensioning device is fixedly connected to the steel bridge, thereby achieving tensioning of the steel cable;

[0039] When the fixing device 7 is used, firstly, one end of the steel cable is inserted into the interior of the connecting tube 5, and then the one end of the steel cable is inserted into the interior of the circular ring 708 from one side, and then the steel cable passes around the circular ring 708 and then passes out from the other side of the circular ring 708, and then the second bolt 706 is rotated to enter the interior of the circular ring 708 by squeezing the conical block 707, so that the steel cable is squeezed inside the circular ring 708, and then the first bolt 702 is rotated to control the second semicircular plate 703 to approach the first semicircular plate 701, and then the steel cable is stably fixed between the first semicircular plate 701 and the second semicircular plate 703 by the barbs 704 fixedly arranged on the inner walls of the first semicircular plate 701 and the second semicircular plate 703, so that the spacing between the first semicircular plate and the second semicircular plate can be adjusted to adapt to steel cables of different models and sizes, thereby increasing the scope of application and improving the applicability.

[0040] When the protective device 8 is in use, the protective tube 802 is sleeved on the surface of the connecting tube 5, and the third bolt 809 is rotated. The third bolt 809 passes through the fixed circular plate 801 and the side of the protective tube 802 in turn to fix the protective tube 802 on the bottom of the fixed circular plate 801, and then the first rubber ring 807 and the second rubber ring 806 are tightly attached to effectively achieve sealing. When the extension tube 803 has not slid to the preset position relative to the protective tube 802, the fixing rod 804 is stretched outward and the elastic member 805 is stretched synchronously. When the extension tube 803 slides to the preset position relative to the protective tube 802, the fixing rod 804 extends into the interior of the protective tube 802 under the elastic reset action of the elastic member 805 to achieve the positioning of the extension tube 803 relative to the protective tube 802.

[0041] The above is only a preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood by specific circumstances.

Claims

1. A steel cable tensioning device for a steel frame bridge, comprising a slide rail (1), characterized in that: A first threaded rod (3) is rotatably provided inside the slide rail (1), the threads on both sides of the first threaded rod (3) are in opposite directions, the bottoms of the two connecting plates (2) are threadedly connected to the first threaded rod (3), and the tops are threadedly connected to the second threaded rod (6), a nut (9) is fixed to one end of the second threaded rod (6), a third threaded rod (4) is rotatably inserted into the bottom of the slide rail (1), a connecting tube (5) is threadedly engaged with the third threaded rod (4), a fixing device (7) is provided on the side of the connecting tube (5), and a protective device (8) is provided on the periphery of the connecting tube (5).

2. The steel cable tensioning device for steel frame bridge according to claim 1, characterized in that: The fixing device (7) comprises a first semicircular plate (701), the first semicircular plate (701) being fixedly connected to an inner wall of one side of the connecting tube (5), a first bolt (702) being threadedly penetrated through the other side surface of the connecting tube (5), and one end of the first bolt (702) penetrating into the connecting tube (5) being rotatably connected to a second semicircular plate (703).

3. The steel cable tensioning device for steel frame bridge according to claim 2, characterized in that: The side thread of the connecting tube (5) penetrates a limiting rod (705), and one end of the limiting rod (705) that penetrates into the connecting tube (5) can cooperate with the side limiting portion of the second semicircular plate (703).

4. The steel cable tensioning device for steel frame bridge according to claim 2, characterized in that: The inner walls of the first semicircular plate (701) and the second semicircular plate (703) are both fixedly provided with barbs (704).

5. The steel cable tensioning device for steel frame bridge according to claim 1, characterized in that: A circular ring (708) is fixedly connected to the top of the inner side of the connecting tube (5); a second bolt (706) is inserted through a thread on the side surface of the connecting tube (5); one end of the second bolt (706) that penetrates into the connecting tube (5) is fixedly connected to a conical block (707); the conical block (707) can extend into the interior of the circular ring (708) and cooperate with it.

6. The steel cable tensioning device for steel frame bridge according to claim 1, characterized in that: The protective device (8) comprises a protective tube (802), and the protective tube (802) is sleeved on the outer circumference of the connecting tube (5).

7. The steel cable tensioning device for steel frame bridge according to claim 1, characterized in that: A fixed circular plate (801) is fixedly connected to the bottom of the slide rail (1), a support bar (808) is fixed to the side of the fixed circular plate (801), a third bolt (809) is inserted into the inner thread of the support bar (808), and the third bolt (809) is threadedly inserted into the side of the protective tube (802).

8. The steel cable tensioning device for steel frame bridge according to claim 7, characterized in that: A first rubber ring (807) is fixed to the bottom of the fixed circular plate (801), and a second rubber ring (806) is fixed to the top of the protective tube (802).

9. The steel cable tensioning device for steel frame bridge according to claim 6, characterized in that: An extension tube (803) is slidably inserted into the bottom of the protective tube (802), a fixing rod (804) is slidably inserted into the side of the protective tube (802), and the fixing rod (804) is threadedly inserted into the side of the extension tube (803).

10. The steel cable tensioning device for steel frame bridge according to claim 9, characterized in that: An elastic member (805) is sleeved on the outer periphery of the fixing rod (804), one end of the elastic member (805) is fixedly connected to the end of the fixing rod (804), and one end of the elastic member (805) away from the end of the fixing rod (804) is fixedly connected to the side of the protective tube (802).

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