阅读说明：本技术 水电站大坡度流道检修装备升降作业车及使用方法 (Lifting operation vehicle for large-gradient runner maintenance equipment of hydropower station and use method ) 是由 万刚 杨进 朱全平 朱思思 毛远平 张易 贾洪刚 平功勋 胡毅力 肖荣 段开林 于 2020-06-12 设计创作，主要内容包括：本发明提供了水电站大坡度流道检修装备升降作业车及使用方法,底盘的底部安装有行走轮装置,所述底盘的顶部通过转动机构安装有立柱,所述立柱与用于驱动其转动的立柱旋转驱动器相配合,所述立柱的顶部固定安装有大臂支架,所述大臂支架上铰接有多节伸缩大臂,所述多节伸缩大臂和立柱之间安装有实现俯仰动作的大臂俯仰液压缸,所述多节伸缩大臂的头部铰接有回转臂头,所述回转臂头上配合安装有用于驱动其转动的臂头驱动电机,所述回转臂头的两侧分别悬挂设置有用于对检修设备进行吊装的左悬挂钢丝绳和右悬挂钢丝绳。自带动力实芯轮胎底盘的行走通过马达驱动,实现小距离移动,以满足不同泄洪道的检查维护。(The invention provides a lifting operation vehicle for large-gradient runner maintenance equipment of a hydropower station and a use method thereof. The walking of the solid tire chassis with power is driven by the motor to realize small-distance movement so as to meet the inspection and maintenance of different flood discharge channels.)

1. Power station heavy grade runner overhauls and equips lift operation car, its characterized in that: it includes chassis (20), walking wheel device is installed to the bottom on chassis (20), stand (8) are installed through slewing mechanism at the top on chassis (20), stand (8) cooperate with stand rotary actuator (18) that is used for driving its pivoted, the top fixed mounting of stand (8) has big arm support (9), it has flexible big arm of multisection (5) to articulate on big arm support (9), install big arm every single move pneumatic cylinder (7) that realize the every single move action between flexible big arm of multisection (5) and stand (8), the head of flexible big arm of multisection (5) articulates there is slewer arm head (3), the cooperation is installed on slewer arm head (3) and is used for driving its pivoted arm head driving motor (2), the both sides of slewer arm head (3) are hung respectively and are provided with left side that is used for hanging wire rope (25) and right side and hang wire rope (27) to overhaul equipment, the left suspension steel wire rope (25) and the right suspension steel wire rope (27) are connected with a hoisting power device arranged on the large arm support (9).

2. The hydropower station large-gradient runner maintenance equipment lifting operation vehicle as claimed in claim 1, wherein: the walking wheel device comprises a plurality of rows of walking wheels (15) arranged at the bottom of a chassis (20), and the walking wheels (15) are connected with a walking wheel driving motor (17) for driving the walking wheels to rotate; the front end of the bottom of the chassis (20) is provided with a front wheel, and the front wheel is connected with a front wheel steering mechanism (22).

3. The hydropower station large-gradient runner maintenance equipment lifting operation vehicle as claimed in claim 2, wherein: a towing rod (23) is arranged at the front end of the chassis (20) and at one end of the front wheel steering mechanism (22); the front end of the bottom of the chassis (20) is provided with a front hydraulic support leg (21), and the rear end of the bottom of the chassis (20) is provided with a rear hydraulic support leg (14).

4. The hydropower station heavy-gradient runner maintenance equipment lifting operation vehicle as claimed in claim 3, characterized in that: the front hydraulic supporting legs (21) and the rear hydraulic supporting legs (14) are arranged on two sides of the chassis (20) in a staggered mode respectively, pressure sensors (36) are mounted on the supporting legs, pressure of each hydraulic supporting leg is monitored during operation, and when the pressure value exceeds a preset value or is lower than the preset value, each action power supply is automatically cut off, so that the trolley is prevented from being inclined to pull, overloaded and overturned.

5. The hydropower station large-gradient runner maintenance equipment lifting operation vehicle as claimed in claim 1, wherein: the top of chassis (20) to the side that is located stand (8) is installed respectively and is used for rotating spacing stand rotatory limit mounting structure (16) and stand forward limit structure (19) to it, stand forward limit structure (19) make multisection flexible big arm (5) pause several seconds when being in the forward.

6. The hydropower station large-gradient runner maintenance equipment lifting operation vehicle as claimed in claim 1, wherein: the multi-section telescopic large arm (5) is hinged with the large arm telescopic hydraulic cylinder (6) and drives the telescopic arm inside the multi-section telescopic large arm to extend out; the large arm pitching hydraulic cylinders (7) are symmetrically arranged on the left and right sides of the multi-section telescopic large arm (5), and a large arm pitching limiting device (10) is mounted on the large arm support (9) and used for pitching limiting the multi-section telescopic large arm (5).

7. The hydropower station large-gradient runner maintenance equipment lifting operation vehicle as claimed in claim 1, wherein: the side of gyration arm head (3) is provided with arm head rotation stop device (4) and arm head forward stop device (1) respectively, arm head rotation stop device (4) and the fixed position rigid coupling of arm head to spacing is carried out to rotation angle, and arm head forward stop device (1) makes gyration arm head (3) rotatory pause several seconds when to forward.

8. The hydropower station large-gradient runner maintenance equipment lifting operation vehicle as claimed in claim 1, wherein: the hoisting power device comprises a bracket (12) fixed on a large arm support (9), a hoisting case (13) is installed on the bracket (12), a winding drum (31) is installed inside the hoisting case (13), a left suspension steel wire rope (25) and a right suspension steel wire rope (27) respectively penetrate through a left limiting device (24) and a right limiting device (26) fixed on two sides of a rotary arm head (3), the left suspension steel wire rope (25) is wound on the winding drum (31) after bypassing a rope guide wheel (28) and a fixed pulley (35), the fixed pulley (35) is installed on a pulley installation plate, the right suspension steel wire rope (27) is wound on the winding drum (31) after bypassing the rope guide wheel (28) and a guide pulley (30), the guide pulley (30) is installed on a pulley frame (29), two sides of the pulley frame (29) are assembled on a screw rod transmission mechanism (34), and the wire rod transmission mechanism (34) slides on the wire rod transmission mechanism to drive the guide pulley (30) to move back and forth so as to adjust the length of the right suspension wire rope (27), and the wire rod transmission mechanism (34) is arranged on the pulley mounting plate.

9. The hydropower station heavy-gradient runner maintenance equipment lifting operation vehicle as claimed in claim 8, wherein: hang wire rope (25) on a left side and hang the parcel in the middle of wire rope (27) on the right side and have signal cable for data control signal transmission, reel (31) are four sections independent traction wire rope, and rope arranging mechanism (32) are fixed in hoist engine case (13) bottom, and rope is arranged in order in guide reel (31), and band-type brake mechanism (33) are located reel (31) left end, lock immediately when the driving appears, install balancing weight (11) on big arm support (9) the left and right sides crossbeam.

10. Use of a lift work vehicle for a heavy grade raceway service equipment of a hydroelectric power station according to any of claims 1 to 9, characterized in that it comprises the following steps:

step 1: the lifting operation vehicle is transported to a fixed position and is parked well, the rear hydraulic support leg (14) and the front hydraulic support leg (21) extend out, the large arm pitching hydraulic cylinder (7) of the lifting operation vehicle extends out, and the multi-section telescopic large arm (5) extends out under the action of the large arm telescopic hydraulic cylinder (6);

step 2: the right suspension steel wire rope (27) and the left suspension steel wire rope (25) are reliably connected with maintenance equipment, the maintenance equipment is lifted to the top of the rotary arm head (3) by the hoisting case (13) of the lifting operation vehicle through the suspension steel wire ropes, the upright post (8) is driven to rotate by the upright post rotation driver (18), so that the multi-section telescopic large arm (5) is driven to rotate, the maintenance equipment is rotated to the outside of a downstream face dam and is placed downwards, and the runner maintenance below an aerator is carried out;

and step 3: the maintenance device is placed in a meter hole arc door slot, maintenance equipment is lifted to the top of a rotary arm head (3), a plurality of sections of telescopic large arms (5) rotate to the inner side of a meter hole, the rotary arm head (3) rotates for a proper angle under the driving of an arm head driving motor (2), so that the maintenance equipment can smoothly pass through the door slot, a winch case (13) releases a steel wire rope, the rotary arm head (3) rotates reversely after the maintenance equipment descends for a proper height, the length direction of the maintenance equipment is parallel to the width direction of the meter hole, and the maintenance equipment descends to the bottom of a flow channel to perform maintenance operation;

and 4, step 4: the whole flood discharge runner overhaul operation is completed, then the winch case (13) is reversely started, the hydropower station flood discharge runner overhaul equipment is lifted to a dam surface road surface through a steel wire rope, the equipment is lifted off to connect the rope, the multi-section telescopic large arm (5) is contracted, the rotary upright post rotary driver (18) enables the multi-section telescopic large arm (5) to be parallel to the chassis (20), the telescopic large arm pitching hydraulic cylinder (7) is contracted, the multi-section telescopic large arm (5) is put down, the rear hydraulic support leg (14) and the front hydraulic support leg (21) are contracted, the front wheel steering mechanism (22) is disconnected, the lifting operation vehicle is transferred to a warehouse to be parked by the locomotive traction tow rod (23), and the working of the lifting operation vehicle of the large-gradient.

Technical Field

The invention relates to a lifting operation vehicle for a maintenance platform in hydropower station runner maintenance and a use method thereof, in particular to a lifting operation vehicle for large-gradient runner mobile maintenance equipment.

Background

When the large-gradient flood discharge runner of the hydropower station is overhauled, because the dam face operation space is limited, the operation vehicle not only needs to be lifted to adapt to the gradient and height change of the bottom plate and the two side walls of the overhaul part of the runner during high-altitude operation, but also needs to realize the short-distance walking and transition of a dam face highway, and can automatically move to another flood discharge runner hole site when one flood discharge runner hole is overhauled. Due to the fact that the overhauling gradient is large, the torque borne by the suspension arm is large, the operation vehicle is required to have anti-overturning performance in the working and shifting processes, and when the lifting platform slightly inclines, the length of the steel wire ropes hung on the two sides of the operation vehicle arm head can be adjusted in a self-adaptive mode, and operation safety is guaranteed. In certain circumstances, the arm head needs to be able to rotate to accommodate different ranges of working space. Therefore, the invention needs to invent a stable, safe and strong space adaptability lifting operation vehicle.

Disclosure of Invention

In order to meet the requirements of large-gradient and narrow-space runner mobile maintenance operation of a hydropower station, the invention provides a lifting operation vehicle of large-gradient runner mobile maintenance equipment of the hydropower station.

In order to achieve the technical features, the invention is realized as follows: a lifting operation vehicle for large-gradient runner maintenance equipment of a hydropower station comprises a chassis, wherein a travelling wheel device is arranged at the bottom of the chassis, the top of the chassis is provided with an upright post through a rotating mechanism, the upright post is matched with an upright post rotating driver for driving the upright post to rotate, a large arm bracket is fixedly arranged at the top of the upright post, a plurality of sections of telescopic large arms are hinged on the large arm bracket, a large arm pitching hydraulic cylinder for realizing pitching motion is arranged between the multi-section telescopic large arm and the upright post, the head of the multi-section telescopic big arm is hinged with a rotary arm head, an arm head driving motor for driving the rotary arm head to rotate is arranged on the rotary arm head in a matching way, a left suspension steel wire rope and a right suspension steel wire rope for hoisting maintenance equipment are respectively suspended on two sides of the rotary arm head, and the left suspension steel wire rope and the right suspension steel wire rope are connected with a hoisting power device arranged on the large arm support.

The walking wheel device comprises a plurality of rows of walking wheels arranged at the bottom of the chassis, and the walking wheels are connected with a walking wheel driving motor for driving the walking wheels to rotate; the front end of the bottom of the chassis is provided with a front wheel, and the front wheel is connected with a front wheel steering mechanism.

A towing rod is arranged at the front end of the chassis and positioned at one end of the front wheel steering mechanism; the front end of the bottom of the chassis is provided with a front hydraulic supporting leg, and the rear end of the bottom of the chassis is provided with a rear hydraulic supporting leg.

The front hydraulic supporting legs and the rear hydraulic supporting legs are arranged on two sides of the chassis in a staggered mode respectively, pressure sensors are mounted on the supporting legs, pressure of each hydraulic supporting leg is monitored during operation, and when the pressure value exceeds a preset value or is lower than the preset value, each action power supply is automatically cut off, so that the trolley is prevented from being obliquely pulled, overloaded and overturned.

The top of the chassis is provided with a stand column rotating limiting structure and a stand column forward limiting structure which are used for rotating and limiting the stand column on the side edges of the stand column, and the stand column forward limiting structure enables the multi-section telescopic boom to pause for several seconds when being in the forward direction.

The multi-section telescopic large arm is hinged with the large arm telescopic hydraulic cylinder and drives the telescopic arm inside the multi-section telescopic large arm to extend out; the large arm pitching hydraulic cylinders are symmetrically arranged on the left and right sides of the multi-section telescopic large arm, and the large arm pitching limiting device is mounted on the large arm support and used for pitching limiting the multi-section telescopic large arm.

The side of gyration arm head is provided with arm head rotation limiting device and arm head forward stop device respectively, arm head rotation limiting device and arm head fixed part rigid coupling to spacing to rotation angle carries out spacingly, and arm head forward stop device makes the gyration arm head rotatory pause several seconds when to forward.

The hoisting power device comprises a bracket fixed on the large arm support, a hoisting machine case is installed on the bracket, a winding drum is installed inside the hoisting machine case, a left suspension steel wire rope and a right suspension steel wire rope respectively pass through a left limiting device and a right limiting device fixed on two sides of the rotary arm head, the left suspension steel wire rope is wound on the winding drum after bypassing a rope guide wheel and a fixed pulley, the fixed pulley is installed on a pulley installation plate, the right suspension steel wire rope is wound on the winding drum after bypassing the rope guide wheel and a guide pulley, the guide pulley is installed on a pulley frame, two sides of the pulley frame are assembled on a lead screw transmission mechanism and slide on the lead screw transmission mechanism to drive the guide pulley to move back and forth so as to adjust the length of the right suspension steel wire rope, and the lead screw transmission mechanism is installed on the pulley installation plate.

The middle of the left suspension steel wire rope and the right suspension steel wire rope is wrapped by a signal cable and used for data control signal transmission, the winding drum is a four-section independent traction steel wire rope, the rope arranging mechanism is fixed at the bottom of the winch case, the winding drum is guided to arrange ropes in order, the band-type brake mechanism is located at the left end of the winding drum and is immediately locked when a runaway occurs, and balancing weights are installed on beams on the left side and the right side of the large-arm support.

The use method of the lifting operation vehicle for the large-gradient runner maintenance equipment of the hydropower station comprises the following steps:

step 1: the lifting operation vehicle is transported to a fixed position and is parked well, the rear hydraulic support leg and the front hydraulic support leg extend out, the large arm pitching hydraulic cylinder of the lifting operation vehicle extends out, and the plurality of sections of telescopic large arms extend out under the action of the large arm telescopic hydraulic cylinder;

step 2: the right suspension steel wire rope and the left suspension steel wire rope are reliably connected with the maintenance equipment, the maintenance equipment is lifted to the top of the head of the rotary arm by the winch case of the lifting operation vehicle through the suspension steel wire ropes, the upright post is driven by the upright post rotating driver to rotate, so that the multi-section telescopic large arm is driven to rotate, the maintenance equipment is rotated to the outside of a downstream face dam and is lowered, and the runner maintenance below the aerated ridge is carried out;

and step 3: the maintenance device is placed below a meter hole arc door slot, the maintenance equipment is lifted to the top position of a rotary arm head, a plurality of sections of large telescopic arms rotate to the inner side of a meter hole, the rotary arm head rotates by a proper angle under the driving of an arm head driving motor, so that the maintenance equipment can smoothly pass through the door slot, a steel wire rope is released by a winch case, after the maintenance equipment descends by a proper height, the rotary arm head reversely rotates, the length direction of the maintenance equipment is parallel to the width direction of the meter hole, and the equipment descends to the bottom of a flow channel to perform maintenance operation;

and 4, step 4: the whole flood discharge runner overhaul operation is completed, then the winch case is reversely started, the hydropower station flood discharge runner overhaul equipment is lifted to a dam surface road surface through a steel wire rope, the equipment is lifted off to be connected with the rope, the multi-section telescopic large arm is contracted, the rotary upright post rotary driver enables the multi-section telescopic large arm to be parallel to the chassis, the large arm pitching hydraulic cylinder is contracted, the multi-section telescopic large arm is put down, the hydraulic support legs and the front hydraulic support legs are contracted, the front wheel steering mechanism is disconnected, the locomotive head pulls the towing rod to transfer the lifting operation vehicle to a warehouse for parking, and the large gradient runner moving overhaul equipment lifting operation vehicle completely finishes working.

The invention has the following beneficial effects:

1. this power station heavy grade runner removes and overhauls and equips lift operation car has reduced the engineering volume of putting up the platform, has protected the runner bottom plate, has saved manpower and materials, and lift operation car degree of automation is high. The operation car can adapt to different slopes and widths of the flood discharge runner, can be adjusted in a self-adaptive mode according to the height of the runner, and is high in operation environment adaptability and safety and stability.

2. The walking driving motor serves as a self-contained power source, after the power source is connected, the hydraulic driving bridge acts on the driving of the chassis, the operation vehicle can move in a small distance, the risks caused by the transfer of the dam trailer and the difficulty degree of personnel operation are reduced, the walking driving motor is driven to be disconnected when the operation vehicle is transported to a warehouse, the non-resistance driven wheel is realized, and the locomotive head is used for dragging the towing rod to complete the transfer.

3. According to the invention, the left limiting device and the right limiting device are symmetrically arranged at two ends of the rotary arm head, so that the ascending position of the steel wire rope is effectively limited, and the collision of suspension equipment on the rotary arm head is prevented.

4. According to the invention, two sides of the pulley yoke are assembled on the screw rod and can slide on the screw rod to guide the movable pulley to move back and forth, the length of the right suspension steel wire rope is adjusted, the relative position of the fixed pulley is unchanged, the length of the suspension steel wire ropes on two sides can be maintained to be the same, and the balance of suspension equipment is ensured.

5. The front hydraulic support legs and the rear hydraulic support legs are respectively arranged on two sides of the chassis in a staggered mode, the support legs are provided with pressure sensors, the pressure of each hydraulic support leg is monitored during operation, and when the pressure value exceeds a preset value or is lower than the preset value, each action power supply is automatically cut off, so that the trolley is prevented from being obliquely pulled, overloaded and overturned.

Drawings

The invention is further illustrated by the following figures and examples.

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a structural diagram of a lifting overturn-preventing device of a suspension device.

Fig. 3 is a top view of the extension legs of the chassis of the lifting operation vehicle.

Fig. 4 is a schematic view of the dam surface of the elevating work vehicle according to the embodiment in use.

In the figure: 1 arm head forward limiting device, 2 arm head driving motor, 3 rotary arm head, 4 arm head rotary limiting device, 5 multi-section telescopic large arm, 6 large arm telescopic hydraulic cylinder, 7 large arm pitching hydraulic cylinder, 8 upright post, 9 large arm support, 10 large arm pitching limiting device, 11 counterweight block, 12 bracket, 13 windlass case, 14 rear hydraulic support leg, 15 walking wheel, 16 upright post rotary limiting structure, 17 walking driving motor, 18 upright post rotary driver, 19 upright post forward limiting structure, 20 chassis, 21 front hydraulic support leg, 22 front wheel steering mechanism, 23 tow bar, 24 left limiting device, 25 left suspension steel wire rope, 26 right limiting device, 27 right suspension steel wire rope, 28 rope guide wheel, 29 pulley frame, 30 movable pulley, 31 coiling block, 32 rope arrangement mechanism, 33 band-type brake braking mechanism, 34 lead screw, 35 fixed pulley, 36 pressure sensor.

Detailed Description

Embodiments of the present invention will be further described with reference to the accompanying drawings.