Portal frame hoisting system for down-the-hole type arc-shaped service gate

Abstract

A portal frame hoisting system for a down-hole type arc service gate comprises a portal frame arranged on the ground of a hydraulic hoist room, a rail is longitudinally arranged on the upper portion of the portal frame, an electric hoist is arranged in the rail and can slide along the rail, the electric hoist is remotely controlled by an operator handheld remote controller, and a hoisting steel wire rope is arranged on the lower portion of the electric hoist. The hoisting steel wire rope is used for hoisting and transporting the arc-shaped service gate; the device is arranged in the hoist room, is assembled on site, is not limited by sites, has low requirements on a dam crest road foundation, and ensures the integrity of the hoist room structure and the safety of ultra-deep distance hoisting of the arc-shaped service gate in the dam crest hoist room.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal structure installation of water conservancy and hydropower engineering, and particularly relates to a gantry hoisting system for a submerged arc-shaped working gate. Background Art

[0002] Reservoirs are typically designed with radial gates for flood discharge and other functions, which are operated and closed by hydraulic hoists. In rare cases, due to extended dam operation, crane access is unavailable, or site conditions preclude the use of a truck crane, making it impossible to remove and install the radial gates. To ensure reservoir safety and prevent serious hazards during flood season, a gantry hoisting system is deployed in the hoist room to facilitate the transportation and installation of the radial gates. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the above-mentioned prior art and provide a gantry hoisting system for a submerged arc working gate with a reasonable design, simple structure, improved construction efficiency, shortened construction period and guaranteed safety.

[0004] The technical solution adopted to solve the above technical problems is: a gantry hoisting system for a submerged arc-shaped working gate, comprising a gantry arranged on the floor of a hydraulic opening and closing machine room, a track arranged longitudinally on the upper part of the gantry, an electric hoist arranged in the track and can slide along the track, the electric hoist is remotely controlled by an operator with a handheld remote control, a steel wire rope is arranged at the lower part of the electric hoist, and the steel wire rope is used for hoisting and transporting the arc-shaped working gate.

[0005] The track of the utility model can be moved laterally along the gantry and temporarily fixed when it moves to a designated position.

[0006] The bottom of the gantry of the utility model is provided with a plurality of groups of universal wheels and fixing devices at intervals along the longitudinal direction.

[0007] The fixing device of the utility model is as follows: a fixed steel plate is provided at the bottom of the gantry, a universal wheel is provided on the inner side of the fixed steel plate, a hydraulic cylinder is provided on the outer side of the fixed steel plate, and a pressing plate is provided at the end of the piston rod of the hydraulic cylinder. When the piston rod is extended, the pressing plate is pressed and fixed on the ground.

[0008] The gantry frame of the utility model is formed by welding mutually perpendicular I-steels into a gate-shaped structure, and reinforcing ribs are cross-arranged on the top and two side walls of the gate-shaped structure.

[0009] A counterweight is provided on the right side of the gantry of the utility model.

[0010] Both ends of the track of the utility model are provided with a limiting mechanism and an elastic buffer.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. Traditional arc-shaped working gates are hoisted by truck cranes, but they cannot be hoisted by truck cranes in the following situations: (1) the dam has been in disrepair for a long time and the road foundation does not meet the requirements; (2) the site is narrow and the truck crane cannot be positioned; while the utility model is set in the hoisting and closing machine room and assembled on site, which is not restricted by the site and has low requirements for the dam top road foundation.

[0013] 2. The utility model is arranged in the hoisting and shutting machine room, which ensures the integrity of the hoisting and shutting machine room structure and the safety of ultra-deep distance lifting of the arc-shaped working gate in the dam top hoisting and shutting machine room.

[0014] 3. The utility model sets a track on the gantry and installs an electric hoist in the track, which can realize the longitudinal and lateral movement of the electric hoist and accurately lift the various components of the arc working gate to the installation position. The space height requirement for transporting the arc gate is low and it can cross other existing equipment in the hoist room.

[0015] 4. The utility model adopts a remote controller to remotely control the electric hoist, and the operator is far away from the lifting site to ensure personnel safety.

[0016] 5. The utility model is provided with universal wheels and fixing devices at the bottom of the gantry, which facilitates the movement of the gantry in the machine room. Compared with traditional threaded fasteners, the fixing device is easy to disassemble, realizes the rapid movement and fixation of the device, and increases the reusability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of an embodiment of the utility model.

[0018] Figure 2 yes Figure 1 AA cross-sectional view.

[0019] Figure 3 yes Figure 2 BB cross-sectional view.

[0020] In the figure: 1. Gantry; 2. Electric hoist; 3. Wire rope; 4. Track; 5. Remote control; 6. Fixed steel plate; 7. Hydraulic cylinder; 8. Pressure plate; 9. Universal wheel. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments, but the present invention is not limited to these embodiments. In this embodiment, the longitudinal direction refers to the length direction of the gantry 1, and the transverse direction refers to the width direction of the gantry 1.

[0022] Example 1

[0023] exist Figure 1、 2 In and 3, the utility model relates to a gantry hoisting system for a submerged-hole arc-shaped working gate, comprising a gantry 1 mounted on the floor of a hydraulic hoisting machine room. The gantry 1 in this embodiment is constructed from mutually perpendicular I-beams welded into a gate-like structure. Stiffening ribs 1-1 are intersectingly arranged on the top and side walls of the gate-like structure to ensure structural stability. To prevent tipping during hoisting, a counterweight is provided on the right side of the gantry 1. Several sets of universal wheels 9 and fixing devices are longitudinally spaced apart at the bottom of the gantry 1. The universal wheel 9 is equipped with a brake, which makes it convenient to move the assembled gantry 1 to the specified position. The fixing device is used to fix the gantry 1 to the ground. Specifically, the fixing device is composed of a fixed steel plate 6, a hydraulic cylinder 7, and a clamping plate 8. A fixed steel plate 6 is provided at the bottom of the gantry 1, the universal wheel is provided on the inner side of the fixed steel plate 6, the hydraulic cylinder 7 is provided on the outer side of the fixed steel plate 6, and a clamping plate 8 is provided at the end of the piston rod of the hydraulic cylinder 7. When the piston rod is extended, the clamping plate 8 is compacted and fixed to the ground, thereby fixing the gantry 1 to the ground. After use, the gantry 1 is removed from the ground by retracting the piston rod of the hydraulic cylinder 7. Compared with traditional threaded fastener fixation, this fixing device is easy to disassemble, realizes rapid movement and fixation of the device, and increases the reusability of the device.

[0024] A track 4 is longitudinally arranged on the upper portion of the gantry 1. An electric hoist 2 is mounted within and can move along the track 4. The electric hoist 2 is remotely controlled by an operator using a handheld remote control 5. The track 4 can move laterally along the gantry 1 and is temporarily fixed when it reaches a designated position. By moving the electric hoist 2 along the length and width of the gantry 1, the various components of the curved working gate are accurately hoisted to their installation locations. To ensure that the electric hoist 2 does not derail when it reaches either end of the track 4 and to prevent collision and damage to the machine body, limit mechanisms and elastic buffers are installed at both ends of the track 4. A wire rope 3 is installed at the bottom of the electric hoist 2 and is used to hoist and transport the curved working gate.

Claims

1. A gantry hoisting system for a submerged arc-shaped working gate, characterized by: The invention comprises a gantry (1) arranged on the floor of a hydraulic opening and closing machine room, a track (4) being longitudinally arranged on the upper portion of the gantry (1), an electric hoist (2) being arranged in the track (4) and being capable of sliding along the track (4), the electric hoist (2) being remotely controlled by an operator holding a remote controller (5), a steel wire rope (3) being arranged on the lower portion of the electric hoist (2), and the steel wire rope (3) being used for hoisting and transporting a curved working gate.

2. The gantry hoisting system for a submerged-hole arc-shaped working gate according to claim 1, characterized in that: The track (4) can be moved laterally along the gantry (1) and temporarily fixed when it moves to a designated position.

3. The gantry hoisting system for a submerged-hole arc-shaped working gate according to claim 1, characterized in that: The bottom of the gantry (1) is provided with a plurality of sets of universal wheels (9) and fixing devices at intervals along the longitudinal direction.

4. A gantry hoisting system for a submerged arc-shaped working gate according to claim 3, characterized in that The fixing device comprises: a fixing steel plate (6) is provided at the bottom of the gantry (1), a universal wheel is provided on the inner side of the fixing steel plate (6), a hydraulic cylinder (7) is provided on the outer side of the fixing steel plate (6), and a pressing plate (8) is provided at the end of the piston rod of the hydraulic cylinder (7), and when the piston rod is extended, the pressing plate (8) is pressed and fixed on the ground.

5. The gantry hoisting system for a submerged-hole arc-shaped working gate according to claim 1, characterized in that: The gantry (1) is formed by welding mutually perpendicular I-beams into a gate-shaped structure, and stiffening ribs (1-1) are cross-arranged on the top and two side walls of the gate-shaped structure.

6. The gantry hoisting system for a submerged-hole arc-shaped working gate according to claim 1, characterized in that: A counterweight is provided on the right side of the gantry (1).

7. The gantry hoisting system for a submerged-hole arc-shaped working gate according to claim 1, characterized in that: Both ends of the track (4) are provided with a limiting mechanism and an elastic buffer.

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