Bridge vertical prestressed tendon tensioning jack transfer device

Abstract

The utility model relates to bridge construction equipment technical field, propose a kind of bridge vertical prestressed tendon tensioning jack transfer device, including travelling mechanism, lever lifting mechanism and jack fixed bracket. The travelling mechanism is constituted by two wheel bodies with antiskid patterns and axle connecting rod;The fulcrum of lever lifting mechanism is fixed on axle connecting rod, lever lifting mechanism includes resistance arm fixedly connected with axle connecting rod, power arm welded with resistance arm into 110 °-150 ° angle of inclusion, and diagonal brace connected between power arm and axle connecting rod;The jack fixed bracket is constituted by horizontal support rod fixedly connected on resistance arm, for clamping jack. The utility model is based on lever principle, to the axle connecting rod of travelling mechanism as fulcrum, realize labor-saving lifting jack by the lever ratio of power arm and resistance arm, utilize travelling mechanism to realize smooth movement, finally reach the purpose that jack is efficiently transferred, accurately positioned and safely operated.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction equipment technology, and in particular to a bridge vertical prestressing tendon tensioning jack transfer device. Background Technology

[0002] During the prestressed bridge construction process, the tensioning of vertical prestressing tendons requires frequent movement and positioning of heavy jacks. Existing construction methods mostly rely on manual handling and adjustment, which has the following shortcomings: First, the jacks are heavy, making manual handling labor-intensive and inefficient, and accidents are prone to occur in confined or high-altitude working environments, posing significant safety hazards; second, the jacks are inconvenient to operate during movement and positioning, making precise positioning difficult, often leading to decreased construction efficiency and unstable tensioning quality.

[0003] To overcome the above-mentioned defects, some construction units have tried to use simple pulleys or trolley structures to assist in movement. However, such devices are mostly simple in structure and have poor stability, making it difficult to meet the requirements of labor-saving handling and positioning.

[0004] Therefore, there is an urgent need for a bridge vertical prestressing tendon tensioning jack transfer device to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a bridge vertical prestressing tendon tensioning jack transfer device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A bridge vertical prestressing tendon tensioning jack transfer device includes: a traveling mechanism, a lever lifting mechanism disposed above the traveling mechanism, and a jack fixing frame disposed on the lever lifting mechanism; the traveling mechanism includes: two wheels and a wheel axle connecting rod connecting the two wheels; the lever lifting mechanism is fixed at its fulcrum on the wheel axle connecting rod; the lever lifting mechanism includes a power arm and a resistance arm; the jack fixing frame is disposed on the resistance arm.

[0007] Preferably, the wheel body has a diameter of 400-600mm, the rim surface is provided with anti-slip patterns, a bearing is provided at the center of the wheel body, the outer ring of the bearing is connected to the wheel body, and the inner ring of the bearing is connected to the wheel axle connecting rod.

[0008] Preferably, the included angle between the power arm and the resistance arm is 110°-150°.

[0009] Preferably, the power arm consists of two parallel rods arranged on the same horizontal plane; the resistance arm consists of two parallel rods arranged on the same horizontal plane; the end of the power arm is fixedly connected to the resistance arm; and the end of the resistance arm is fixedly connected to the wheel axle connecting rod.

[0010] Preferably, a reinforcing scissor brace is provided between the two rods of the power arm, and two diagonal braces are respectively provided between the bottom of the two rods of the power arm and the wheel axle connecting rod, with a transverse reinforcing steel bar provided between the two diagonal braces.

[0011] Preferably, the jack fixing frame consists of two parallel rods arranged on the same horizontal plane, with the two rods perpendicular to the resistance arm, and the distance between the two rods slightly greater than the diameter of the jack.

[0012] Preferably, a transverse reinforcing bar is provided between the two rods of the resistance arm.

[0013] This utility model discloses a bridge vertical prestressing tendon tensioning jack transfer device, which has the following beneficial effects.

[0014] This utility model includes a walking mechanism, a lever lifting mechanism, and a jack fixing frame. The walking mechanism consists of two wheels with anti-slip patterns and a wheel axle connecting rod. The fulcrum of the lever lifting mechanism is fixed to the wheel axle connecting rod. The lever lifting mechanism includes a resistance arm fixedly connected to the wheel axle connecting rod, a power arm welded to the resistance arm at a 110°-150° angle, and a diagonal brace connecting the power arm and the wheel axle connecting rod. The jack fixing frame consists of a transverse support rod fixedly connected to the resistance arm for securing the jack. Based on the lever principle, this utility model uses the wheel axle connecting rod of the walking mechanism as the fulcrum, achieving effortless lifting of the jack through the leverage ratio of the power arm to the resistance arm. The walking mechanism enables smooth movement, ultimately achieving efficient jack transport, precise positioning, and safe operation. It effectively solves industry pain points such as difficult jack handling and inaccurate positioning in bridge prestressed construction. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the bridge vertical prestressing tendon tensioning jack transfer device proposed in the embodiments of this application.

[0016] Figure 2 This is a side view of the bridge vertical prestressing tendon tensioning jack transfer device proposed in the embodiments of this application.

[0017] In the attached diagram: 1—wheel hub; 2—wheel axle connecting rod; 3—power arm; 4—resistance arm; 5—diagonal brace; 6—lateral reinforcing steel bar; 7—reinforced scissor brace; 8—jack fixing frame. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] Example Reference Figure 1 and Figure 2 As shown, a bridge vertical prestressing tendon tensioning jack transfer device includes: a traveling mechanism, a lever lifting mechanism disposed above the traveling mechanism, and a jack fixing frame disposed on the lever lifting mechanism; the traveling mechanism includes: two wheels and a wheel axle connecting rod 2 connecting the two wheels; the lever lifting mechanism is fixed at its fulcrum on the wheel axle connecting rod 2; the lever lifting mechanism includes a power arm 3 and a resistance arm 4; the jack fixing frame is disposed on the resistance arm 4.

[0021] Preferably, in this embodiment, the wheel diameter is 400-600mm, the tire width is 80-120mm, the wheel rim surface is provided with anti-slip patterns, the wheel body center is provided with a bearing, the outer ring of the bearing is connected to the wheel body, and the inner ring of the bearing is connected to the wheel axle connecting rod 2.

[0022] In this embodiment, the wheel hub 1 of the wheel body is made of high-strength cast iron or alloy steel, and the wheel axle connecting rod 2 is made of HRB400 grade Φ32mm threaded steel bar with a length of 80-120cm. The two ends of the wheel axle connecting rod 2 pass through the inner ring of the bearing of the wheel body and are fixed by double-sided full welding.

[0023] Preferably, in this embodiment, the included angle between the power arm 3 and the resistance arm 4 is 110°-150°.

[0024] Preferably, in this embodiment, the power arm 3 consists of two parallel rods arranged on the same horizontal plane; the resistance arm 4 consists of two parallel rods arranged on the same horizontal plane; the end of the power arm 3 is welded to the resistance arm 4; and the end of the resistance arm 4 is welded to the wheel axle connecting rod 2.

[0025] In this embodiment, the reinforcing bars of the resistance arm 4 are made of HRB400 grade Φ32mm threaded steel with a length of 150-180cm. They are welded to the wheel axle connecting rod 2 by lap welding. The welding position is 50-80mm away from the inner side of the wheel body. It is necessary to ensure that the two reinforcing bars of the resistance arm 4 can pass through the lifting lugs on both sides of the jack to ensure that the wheel body can rotate freely.

[0026] Preferably, in this embodiment, a reinforcing scissor brace 7 is welded between the two rods of the power arm 3, and two diagonal braces 5 are welded between the bottom of the two rods of the power arm 3 and the wheel axle connecting rod 2, and a transverse reinforcing steel bar 6 is welded between the two diagonal braces 5.

[0027] In this embodiment, the reinforcing bars of the power arm 3 are made of HRB400 grade Φ32mm threaded steel, with a length of 2-4m. The ends of the reinforcing bars of the power arm 3 are welded to the resistance arm 4. Two diagonal braces 5 are welded between the bottom of the two rods of the power arm 3 and the wheel axle connecting rod 2, forming a stable triangular support structure with the reinforcing bars of the power arm 3, the diagonal braces 5, and the resistance arm 4. The transverse reinforcing bars are made of Φ25mm threaded steel. The reinforcing scissor braces 7 are made of Φ32mm threaded steel and are arranged in an X-shape between the two reinforcing bars of the power arm 3, with the intersection point located at the midpoint of the length of the power arm 3; the angle between the scissor braces and the reinforcing bars of the power arm 3 is 45-60°.

[0028] Preferably, in this embodiment, the jack fixing frame consists of two parallel rods arranged on the same horizontal plane. The two rods of the jack fixing frame are perpendicular to the resistance arm 4. The jack fixing frame is welded to the resistance arm 4. The distance between the two rods of the jack fixing frame is slightly larger than the diameter of the jack.

[0029] The jack fixing frame 8 uses two Φ25mm threaded steel bars as upper and lower transverse support beams, which are fixed to the two longitudinal steel bars of the resistance arm 4 by vertical lap welding. The spacing of the upper and lower transverse support beams is set according to the diameter of the hydraulic jack, and the spacing can be adjusted by changing the welding position.

[0030] Preferably, in this embodiment, a transverse reinforcing steel bar 6 is provided between the two rods of the resistance arm 4.

[0031] When using this bridge vertical prestressing tendon tensioning jack transfer device, the two lifting lugs on both sides of the jack are passed through the two reinforcing bars of the resistance arm 4. The jack is then slid along the axis of the resistance arm 4 to the transverse support beam under the jack fixing frame 8. At this point, the transverse support beam on the jack fixing frame 8 is welded, allowing the jack fixing frame to limit the jack's axial movement along the resistance arm 4. This bridge vertical prestressing tendon tensioning jack transfer device, based on the lever principle, uses the wheel axle connecting rod 2 of the traveling mechanism as the fulcrum. The lever ratio between the power arm 3 and the resistance arm 4 achieves effortless lifting of the jack, while the traveling mechanism enables smooth movement, ultimately achieving efficient jack transfer, precise positioning, and safe operation. It effectively solves industry pain points such as difficult jack handling and inaccurate positioning during bridge prestressed construction.

[0032] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Substitutions may include replacements for some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the scope of protection of this utility model.

Claims

1. A bridge vertical prestressing tendon tensioning jack transfer device, characterized in that, include: The traveling mechanism, the lever lifting mechanism located above the traveling mechanism, and the jack fixing frame located on the lever lifting mechanism; The walking mechanism includes: two wheels and a wheel axle connecting the two wheels; the lever lifting mechanism has its fulcrum fixed on the wheel axle connecting rod; the lever lifting mechanism includes a power arm and a resistance arm; the jack is fixedly mounted on the resistance arm.

2. The bridge vertical prestressing tendon tensioning jack transfer device according to claim 1, characterized in that, The wheel body has a diameter of 400-600mm, the rim surface is provided with anti-slip patterns, and a bearing is provided at the center of the wheel body. The outer ring of the bearing is connected to the wheel body, and the inner ring of the bearing is connected to the wheel axle connecting rod.

3. The bridge vertical prestressing tendon tensioning jack transfer device according to claim 1, characterized in that, The included angle between the power arm and the resistance arm is 110°-150°.

4. A bridge vertical prestressing tendon tensioning jack transfer device according to claim 1 or 3, characterized in that, The power arm consists of two parallel rods arranged on the same horizontal plane; the resistance arm consists of two parallel rods arranged on the same horizontal plane; the end of the power arm is fixedly connected to the resistance arm; the end of the resistance arm is fixedly connected to the wheel axle connecting rod.

5. A bridge vertical prestressing tendon tensioning jack transfer device according to claim 4, characterized in that, The two arms of the power arm are provided with a reinforced scissor brace, and two diagonal braces are provided between the bottom of the two arms of the power arm and the wheel axle connecting rod, with a transverse reinforcing steel bar between the two diagonal braces.

6. A bridge vertical prestressing tendon tensioning jack transfer device according to claim 4, characterized in that, The jack fixing frame consists of two parallel rods arranged on the same horizontal plane. The two rods of the jack fixing frame are perpendicular to the resistance arm, and the distance between the two rods of the jack fixing frame is slightly larger than the diameter of the jack.

7. A bridge vertical prestressing tendon tensioning jack transfer device according to claim 4, characterized in that, A transverse reinforcing bar is provided between the two rods of the resistance arm.

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