Lifting appliance for dismantling cross beam of tied-arch bridge

Abstract

The utility model discloses a lifting appliance for dismantling a cross beam of a tied-arch bridge, and belongs to the field of bridge construction equipment. The lifting appliance comprises a first lifting rod, a second lifting rod and a clamp assembly. The second hoisting rod is arranged below the first hoisting rod, and the first hoisting rod is parallel to the second hoisting rod. The clamp assembly comprises two connecting rods and clamping arms, each connecting rod is provided with a first end and a second end, and the first ends of the two connecting rods are hinged to the same set position of the first lifting rod. Each clamping arm is provided with a first end and a second end, the number of the clamping arms is two, the two clamping arms are hinged, the hinged point of the two clamping arms is connected with the second hoisting rod, the first ends of the two clamping arms are hinged to the second ends of the two connecting rods respectively, and the second ends of the two clamping arms are used for clamping the tied-arch bridge cross beam. According to the lifting appliance for dismantling the tied-arch bridge cross beam, the tied-arch bridge cross beam can be automatically clamped or loosened along with the change of a lifting point in the dismantling construction process of the tied-arch bridge cross beam, and the dismantling efficiency of the cross beam is high.

Description

Technical Field

[0001] The utility model belongs to the field of bridge construction equipment, in particular to a hoisting device for dismantling a cross beam of a tied arch bridge. Background Art

[0002] With the increasing maturity of bridge demolition technology at home and abroad and the widespread application of large-scale lifting equipment such as large-tonnage crane ships and tower cranes, the choice of bridge demolition methods is becoming more and more diverse, such as overall jacking method, cable lifting method, wire rope overall lifting method, etc.

[0003] However, the dismantling technology of the beams of large-span reinforced concrete arch bridges is relatively backward. The traditional process of manually tying steel wire ropes, lifting and dismantling with lifting equipment, and manually untying steel wire ropes can no longer meet the requirements, so the demand for new technology and new equipment is becoming more and more urgent. Considering the busy water transportation of inland waterways and the limited closure time, how to improve the dismantling efficiency of the beams of tied arch bridges is an urgent problem to be solved. Summary of the invention

[0004] In view of the deficiencies existing in the related art, the purpose of the utility model is to provide a lifting device for dismantling the cross beam of a tied arch bridge, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A lifting device for dismantling a crossbeam of a tied arch bridge, comprising:

[0007] First lifting rod;

[0008] A second hoisting rod, the second hoisting rod is arranged below the first hoisting rod, and the first hoisting rod is parallel to the second hoisting rod;

[0009] The fixture assembly includes:

[0010] A connecting rod, the connecting rod having a first end and a second end, two connecting rods are provided, and the first ends of the two connecting rods are hinged at the same set position of the first hanging rod;

[0011] The clamping arm has a first end and a second end. The clamping arm is provided with two clamping arms. The two clamping arms are hinged. The hinge points of the two clamping arms are connected to the second lifting rod. The first ends of the two clamping arms are respectively hinged to the second ends of the two connecting rods. The second ends of the two clamping arms are used to clamp the crossbeam of the tie-rod arch bridge.

[0012] In some of the embodiments, the lifting device for dismantling the crossbeam of the tied arch bridge also includes a telescopic rod, one end of the telescopic rod is a fixed end, and the other end is a telescopic end, one end of the telescopic rod is connected to the first lifting rod, and the other end is connected to the second lifting rod, and the telescopic rod is extended or shortened to drive the first lifting rod and the second lifting rod to move away from or closer to each other.

[0013] In some embodiments, a plurality of telescopic rods are provided, and the plurality of telescopic rods are symmetrically arranged on the first hanging rod and the second hanging rod.

[0014] In some of the embodiments, the lifting device for removing the crossbeam of the tied arch bridge further includes a pad block, which is arranged at the second end of the clamping arm, and the pad block is located on the contact surface between the clamping arm and the crossbeam of the tied arch bridge.

[0015] In some embodiments, the pad is made of rubber.

[0016] In some of the embodiments, the lifting device for removing the cross beam of the tied arch bridge further includes a first steel wire rope and a second steel wire rope, wherein the first steel wire rope is connected to the first lifting rod, and the second steel wire rope is connected to the second lifting rod.

[0017] In some embodiments, the lifting device for dismantling the crossbeam of the tied arch bridge also includes a first ear plate and a second ear plate, the first ear plate is arranged on the first lifting rod, and the second ear plate is arranged on the second lifting rod, the first ear plate is provided with a lifting hole for passing the first steel wire rope, and the second ear plate is provided with a lifting hole for passing the second steel wire rope.

[0018] In some embodiments, two clamp assemblies are provided, and the two clamp assemblies are respectively provided at two ends of the first hanging rod and the second hanging rod.

[0019] In some of the embodiments, the lifting device for removing the cross beam of the tied arch bridge further includes a third ear plate, the third ear plate is arranged on the first lifting rod, and the first ends of the two connecting rods are hinged to the third ear plate.

[0020] In some of the embodiments, the material of the clamp assembly is Q345 steel.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. The utility model provides a lifting device for dismantling a cross beam of a tied arch bridge, which is composed of a first lifting rod, a second lifting rod and a clamp assembly, and has a simple structure. During the dismantling construction process of the cross beam of the tied arch bridge, the cross beam of the tied arch bridge can be automatically clamped or released as the lifting point changes, and the efficiency of the cross beam dismantling is high.

[0023] 2. The lifting device for dismantling the cross beam of the tied arch bridge provided by the utility model comprises a telescopic rod arranged between the first lifting rod and the second lifting rod, and has high structural stability, thereby ensuring the construction safety of dismantling the cross beam of the tied arch bridge.

[0024] 3. The lifting device for dismantling the crossbeam of the tied arch bridge provided by the utility model includes a rubber pad arranged on the clamping arm. When the clamping arm clamps the crossbeam of the tied arch bridge, the rubber pad directly contacts the crossbeam of the tied arch bridge. The friction between the pad and the crossbeam is large, which increases the clamping degree and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0026] Figure 1 It is a structural schematic diagram of an embodiment of a lifting device for removing a cross beam of a tied arch bridge according to the utility model;

[0027] Figure 2 A schematic diagram of a lifting device for dismantling a tied arch bridge crossbeam according to an embodiment of the utility model, in which a lifting device clamps a tied arch bridge crossbeam;

[0028] Figure 3 The utility model is a schematic diagram of a lifting device for removing a tie-bar arch bridge crossbeam, in which a lifting device is used to loosen a tie-bar arch bridge crossbeam according to an embodiment of the utility model.

[0029] In the figure:

[0030] 1. First lifting rod; 2. Second lifting rod; 3. Clamp assembly; 31. Connecting rod; 32. Clamping arm; 4. Telescopic rod; 5. Pad; 6. First ear plate; 7. Second ear plate; 8. Third ear plate; 9. Tie-bar arch bridge crossbeam. DETAILED DESCRIPTION

[0031] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0032] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying 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 operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 direct connection, or 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.

[0034] See attached Figures 1 to 3 , a schematic embodiment of the lifting device for dismantling the cross beam of a tie-bar arch bridge proposed in the utility model is given, and the lifting device for dismantling the cross beam of a tie-bar arch bridge comprises a first lifting rod 1, a second lifting rod 2 and a clamp assembly 3.

[0035] The second hoisting rod 2 is arranged below the first hoisting rod 1, and the first hoisting rod 1 is parallel to the second hoisting rod 2. The clamp assembly 3 is arranged on the first hoisting rod 1 and the second hoisting rod 2, and the clamp assembly 3 specifically includes a connecting rod 31 and a clamping arm 32. The connecting rod 31 has a first end and a second end, and there are two connecting rods 31, and the first ends of the two connecting rods 31 are hinged at the same set position of the first hoisting rod 1. The clamping arm 32 has a first end and a second end, and there are two clamping arms 32, and the two clamping arms 32 are hinged, and the hinge points of the two clamping arms 32 are connected to the second hoisting rod 2, and the first ends of the two clamping arms 32 are respectively hinged to the second ends of the two connecting rods 31, and the second ends of the two clamping arms 32 are used to clamp the tie arch bridge beam 9.

[0036] In order to enhance the structural stability of the lifting device, in this embodiment, the lifting device for dismantling the cross beam of the tied arch bridge further includes a telescopic rod 4, one end of the telescopic rod 4 is a fixed end, and the other end is a telescopic end. One end of the telescopic rod 4 is connected to the first lifting rod 1, and the other end is connected to the second lifting rod 2. The telescopic rod 4 is extended or shortened to drive the first lifting rod 1 and the second lifting rod 2 to move away from or closer to each other. In this embodiment, see the attached Figure 1 The fixed end of the telescopic rod 4 is connected to the second hoisting rod 2, and the telescopic end of the telescopic rod 4 is connected to the first hoisting rod 1.

[0037] In order to further enhance the structural stability of the sling, in some embodiments, a plurality of telescopic rods 4 are provided, and the plurality of telescopic rods 4 are symmetrically arranged on the first hoisting rod 1 and the second hoisting rod 2. Figure 1 , two telescopic rods 4 are provided, and the two telescopic rods 4 are symmetrically arranged at the two ends of the first hoisting rod 1 and the second hoisting rod 2. It should be noted here that when the number of telescopic rods 4 is an odd number, one of the telescopic rods 4 is arranged between the first hoisting rod 1 and the second hoisting rod 2, and the other telescopic rods 4 are symmetrically arranged on the first hoisting rod 1 and the second hoisting rod 2, so as to ensure the balance of the lifting device for dismantling the cross beam of the tied arch bridge during the lifting construction.

[0038] In order to enable the clamping arm 32 to firmly clamp the tie arch bridge beam 9, the tie arch bridge beam removal lifting device provided in this embodiment also includes a pad 5, which is arranged at the second end of the clamping arm 32, and the pad 5 is located on the contact surface between the clamping arm 32 and the tie arch bridge beam 9. When the clamping arm 32 clamps the tie arch bridge beam 9, the pad 5 directly contacts the tie arch bridge beam 9, and the friction between the pad 5 and the tie arch bridge beam 9 is large, and the clamping degree and stability are large. In this embodiment, the pad 5 is made of rubber material, and the rubber pad 5 has a small mass and is easy to install and disassemble.

[0039] In order to facilitate hoisting, the lifting device for dismantling the cross beam of the tied arch bridge provided in this embodiment also includes a first steel wire rope and a second steel wire rope, the first steel wire rope is connected to the first hoisting rod 1, and the second steel wire rope is connected to the second hoisting rod 2. During hoisting, the main hook of the lifting equipment is connected to the first steel wire rope, and the auxiliary hook of the lifting equipment is connected to the second steel wire rope.

[0040] In order to facilitate the connection between the steel wire rope and the lifting rod, the lifting device for dismantling the cross beam of the tied arch bridge provided in this embodiment also includes a first ear plate 6 and a second ear plate 7. The first ear plate 6 is arranged on the first lifting rod 1, and the second ear plate 7 is arranged on the second lifting rod 2. A lifting hole is opened on the first ear plate 6 to pass the first steel wire rope, and a lifting hole is opened on the second ear plate 7 to pass the second steel wire rope. In addition, in order to make the lifting smooth and stable, two first ear plates 6 and two second ear plates 7 are respectively provided, and the two first ear plates 6 are arranged at the top of the two ends of the first lifting rod 1, and the two second ear plates 7 are arranged at the top of the end of the second lifting rod 2.

[0041] In order to clamp the tie-arch bridge crossbeam 9 of larger size and mass, two clamp assemblies 3 are provided. The two clamp assemblies 3 are respectively arranged at the two ends of the first lifting rod 1 and the second lifting rod 2 to jointly clamp and lift the tie-arch bridge crossbeam 9.

[0042] In order to facilitate the connection between the connecting rod 31 and the first hoisting rod 1, the lifting device for removing the cross beam of the tied arch bridge provided in this embodiment further includes a third ear plate 8, which is arranged on the first hoisting rod 1, and the first ends of the two connecting rods 31 are hinged to the third ear plate 8. Figure 1 and Figure 2 The third ear plate 8 is arranged at the bottom of the end of the first hanging rod 1.

[0043] In order to make the lifting equipment for dismantling the tied arch bridge beam strong enough to lift the tied arch bridge beam 9, in the present embodiment, the material of the clamp assembly 3 is selected to be Q345 steel. Q345 steel has high strength and good corrosion resistance, which can extend the service life of the lifting equipment for dismantling the tied arch bridge beam.

[0044] In the above-mentioned schematic embodiment, the lifting device for dismantling the beam of the tied arch bridge consists of a first lifting rod, a second lifting rod and a clamp assembly, and has a simple structure. During the dismantling construction process of the beam of the tied arch bridge, the beam of the tied arch bridge can be automatically clamped or released as the lifting point changes. The beam dismantling efficiency is high, and the beam dismantling work can be completed within a limited navigation closure time. There is no need to manually tie the beam, and the safety is high.

[0045] The following is combined with Figures 1 to 3 The working process of an embodiment of the utility model of the lifting device for removing the cross beam of the tied arch bridge is described as follows:

[0046] The lifting equipment is selected as a lifting vessel, which has a main hook and an auxiliary hook. One end of a first steel wire rope is passed through the first ear plate 6, and the other end of the first steel wire rope is connected to the main hook of the lifting vessel. One end of a second steel wire rope is passed through the second ear plate 7, and the other end of the second steel wire rope is connected to the auxiliary hook of the lifting vessel.

[0047] The auxiliary hook of the crane ship is lifted, and the lifting device for dismantling the cross beam of the tied arch bridge is lifted through the second lifting rod 2. At this time, see the attached Figure 3 Due to the gravity of the first hoisting rod 1, the telescopic rod 4 is shortened, the first hoisting rod 1 and the second hoisting rod 2 are close to each other, and due to the hinged relationship between the second hoisting rod 2, the connecting rod 31 and the clamping arm 32, the clamping arm 32 is open. The auxiliary hook of the crane ship lowers the lifting device for removing the cross beam of the tied arch bridge to the cross beam 9 of the tied arch bridge.

[0048] The auxiliary hook of the crane ship is loosened, the main hook of the crane ship is lifted, and the lifting device for dismantling the cross beam of the tied arch bridge is lifted by the first lifting rod 1. At this time, see the attached Figure 2 As the first hoisting rod 1 is hoisted, the telescopic rod 4 gradually extends to the extended state, and the first hoisting rod 1 and the second hoisting rod 2 move away from each other to the distant state. Due to the hinged relationship between the second hoisting rod 2, the connecting rod 31 and the clamping arm 32, the clamping arm 32 is in the clamping state. The main hook of the crane ship moves the tie arch bridge beam 9 to the cargo ship through the tie arch bridge beam removal hoist. At this time, the main hook of the crane ship is relaxed, and the auxiliary hook of the crane ship is lifted. According to the above, the clamping arm 32 of the tie arch bridge beam removal hoist is automatically changed to the open state, and the auxiliary hook of the crane ship lowers the tie arch bridge beam removal hoist to the next tie arch bridge beam 9, and the beam removal and hoisting work continues.

[0049] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0050] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for which protection is requested in the utility model.

Claims

1. A lifting device for dismantling a crossbeam of a tied arch bridge, characterized in that: include: First lifting rod; A second hoisting rod, the second hoisting rod is arranged below the first hoisting rod, and the first hoisting rod is parallel to the second hoisting rod; A fixture assembly, the fixture assembly comprising: A connecting rod, the connecting rod having a first end and a second end, two connecting rods are provided, and the first ends of the two connecting rods are hinged at the same set position of the first hanging rod; A clamping arm, wherein the clamping arm has a first end and a second end, and two clamping arms are provided, wherein the two clamping arms are hinged, and the hinge points of the two clamping arms are connected to the second lifting rod, and the first ends of the two clamping arms are respectively hinged to the second ends of the two connecting rods, and the second ends of the two clamping arms are used to clamp the crossbeam of the tie-rod arch bridge.

2. The lifting device for dismantling the cross beam of a tied arch bridge according to claim 1, characterized in that: It also includes a telescopic rod, one end of which is a fixed end and the other end is a telescopic end. One end of the telescopic rod is connected to the first hanging rod, and the other end is connected to the second hanging rod. The telescopic rod is extended or shortened to drive the first hanging rod and the second hanging rod to move away from or closer to each other.

3. The lifting device for dismantling the cross beam of a tied arch bridge according to claim 2, characterized in that: The telescopic rods are provided in plurality, and the plurality of telescopic rods are symmetrically arranged on the first hoisting rod and the second hoisting rod.

4. The lifting device for dismantling a cross beam of a tied arch bridge according to claim 1, characterized in that: It also includes a pad block, which is arranged at the second end of the clamping arm, and the pad block is located on the contact surface between the clamping arm and the crossbeam of the tie-bar arch bridge.

5. The lifting device for dismantling the cross beam of a tied arch bridge according to claim 4, characterized in that: The cushion block is made of rubber.

6. The lifting device for dismantling a cross beam of a tied arch bridge according to claim 1, characterized in that: It also includes a first steel wire rope and a second steel wire rope, wherein the first steel wire rope is connected to the first hoisting rod, and the second steel wire rope is connected to the second hoisting rod.

7. The lifting device for dismantling a cross beam of a tied arch bridge according to claim 6, characterized in that: It also includes a first ear plate and a second ear plate, the first ear plate is arranged on the first lifting rod, the second ear plate is arranged on the second lifting rod, the first ear plate is provided with a lifting hole for passing the first steel wire rope, and the second ear plate is provided with a lifting hole for passing the second steel wire rope.

8. The lifting device for dismantling a cross beam of a tied arch bridge according to claim 1, characterized in that: There are two clamp assemblies, and the two clamp assemblies are respectively arranged at two ends of the first hanging rod and the second hanging rod.

9. The lifting device for dismantling a cross beam of a tied arch bridge according to claim 1, characterized in that: It also includes a third ear plate, which is arranged on the first hanging rod, and the first ends of the two connecting rods are hinged to the third ear plate.

10. The lifting device for dismantling a cross beam of a tied arch bridge according to any one of claims 1 to 9, characterized in that: The material of the clamp assembly is Q345 steel.

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