CN110158460A - Construction operation movable hanging basket and its construction method under across electric railway Bridge Beam - Google Patents

Abstract

The invention discloses a mobile hanging basket for construction work under bridge beams spanning electrified railways and a construction method thereof. The mobile hanging basket for construction work under the electrified railway bridge includes the track arranged on the bridge along the bridge direction, the running mechanism, the hanging basket assembly, the lifting hydraulic cylinder, and the hydraulic station. The running mechanism includes two traveling trolleys set on the track , the upper part of the traveling trolley frame is fixed with a cantilever frame, and the cantilever end of the cantilever frame is relatively fixed with two sets of limit brackets. Between the two sets of limit brackets on the cantilever frame, the two diagonal braces of the lower assembly of the hanging basket are respectively connected to the lower ends of the two vertical rods, and the two ends of the working platform of the lower assembly of the hanging basket are respectively rotatably connected to the two A diagonal brace connection, a hand chain hoist is connected between the two sides of the front end of the work platform and the two vertical frame rods, the cylinder body of the lifting hydraulic cylinder is fixed on the cantilever frame, and the piston rod is connected to the top of the upper component of the hanging basket. Beam connection.

Description

Mobile hanging basket and its construction method for construction work under bridge beams spanning electrified railway

technical field

The invention relates to a mobile hanging basket for construction work under a bridge spanning an electrified railway, belonging to the technical field of bridge construction. The present invention also relates to the construction method of the above-mentioned mobile hanging basket.

Background technique

With the continuous development of society, bridges in cities continue to be built. Due to the relatively short design life of the bridge itself, the traffic volume in the city continues to increase, and various overloading phenomena are serious, which accelerates the damage of various parts of the bridge and the regular maintenance of the bridge. Reinforcement has also become a problem that needs to be solved.

Generally, the device for construction and maintenance of the bottom and side of the bridge girder is a hanging cage or a hanging bracket made of scaffolding pipes as a platform. The construction personnel stand on these suspension tools to operate, which will have a certain impact on the safety of the construction personnel and the traffic under the bridge. The overall structure of the device is relatively bulky and cannot move freely, and the construction positions change a lot, and the work efficiency is low; at present, there are also large-scale mobile hanging baskets, and the large-scale mobile hanging baskets have slow moving speed, poor maneuverability, and narrow vertical space for construction at the bottom of the beam. It is impossible to lift and fold the platform according to the working conditions within hours, and cannot adapt to the changing construction requirements on site.

Contents of the invention

Aiming at the above-mentioned defects in the prior art, the present invention provides a mobile hanging basket for construction work under the beam of an electrified railway bridge that is convenient to move and safe to use, and solves the problem of limited construction space at the bottom of the beam.

The present invention is achieved through the following technical solutions: a mobile hanging basket for construction work under the electrified railway bridge, which is characterized in that it includes a track, a running mechanism, a hanging basket assembly, a lifting hydraulic cylinder, and a hydraulic station. The bridge direction is fixed on the bridge surface. The traveling mechanism includes two traveling trolleys with traveling wheel sets at the bottom and a power device for driving the traveling trolleys. The two traveling trolleys are arranged at a certain distance apart. The traveling trolleys pass The traveling wheel set is arranged on the track, the upper part of the frame of the traveling trolley is fixedly provided with a cantilever frame, the cantilever end of the cantilever frame is relatively fixed with two sets of limit brackets, and the hanging basket assembly includes a hanging The upper assembly of the basket and the lower assembly of the hanging basket, the upper assembly of the hanging basket includes two vertically arranged vertical rods, a top beam fixedly connected between the top ends of the two vertical rods, and the two vertical rods The frame rods are movably arranged up and down between the two sets of limit brackets on the cantilever frames of the two sets of trolleys. The lower assembly of the hanging basket includes a platform assembly and a chain block. two diagonal braces, the two diagonal braces are respectively connected to the lower ends of the two vertical frame rods, and the two ends of the operation platform are respectively rotatably connected to the two said diagonal braces. The two sides of the front end are respectively connected to one chain hoist, the hook ends of the two chain hoists are respectively connected to the two vertical rods, and there are two lifting hydraulic cylinders, which are respectively arranged on two On the trolley, the cylinder body of the lifting hydraulic cylinder is fixed on the cantilever frame, the piston rod of the lifting hydraulic cylinder is connected with the top beam of the upper assembly of the hanging basket, and the hydraulic lifting cylinder is connected with the The hydraulic station is connected.

In the present invention, the trolley can move along the track along the direction of the bridge, and at the same time, it can drive the hanging basket assembly to move along the direction of the bridge. When the piston rod of the lifting cylinder moves, it can drive the top beam of the upper assembly of the hanging basket to move up and down. Drive the vertical rod of the upper component of the hanging basket to move up and down, thereby driving the lower component of the hanging basket to lift. The working platform in the present invention can be folded and folded, and the working platform can be controlled to be in a normal working position or to be folded and folded by manually controlling the chain block. During operation of the present invention, the hanging basket can be moved to a designated position for lifting and unfolding the work platform.

Further, in order to facilitate the collapsing and folding of the working platform, protective railings connected by hinges that can be folded inward are provided around the working platform. The protective railings are erected during operation, and when the operating platform needs to be folded, the protective railings are folded inward, and the operating platform can be smoothly retracted and folded.

Further, in order to improve the safety of the operation, the two tracks are arranged in parallel, and each traveling wheel set of the trolley includes two sets of driving wheels and two sets of driven wheels, and each set of driving wheels and driven wheels The lower part of the set is provided with two sets of guide wheels matched with the track.

Further, in order to ensure the up and down movement of the vertical frame bar, a composite roller bearing is provided on the limit bracket, a bearing limit bar is provided on the vertical frame bar, and the composite roller bearing is located on the vertical frame between the bearing stop bars on the rod.

Further, in order to improve construction safety, an insulating nylon plate is fixed at the bottom of the working platform. When working on the electrified railway, the construction safety problem is solved by setting the insulating nylon board, and the driving safety is guaranteed.

Further, in order to ensure the safety of operation, a counterweight is arranged in each cantilever frame.

The present invention also provides a construction method of the above-mentioned mobile hanging basket for the construction work under the spanning electrified railway bridge girder, the technical scheme adopted is: comprising the following steps: (1) track installation: cleaning the bridge deck in the track installation area, using Bolts fix the track mounting plate on the bridge surface, and weld the track and the track mounting plate firmly; (2) Installation of the power part of the traveling trolley: the traveling wheel set, power device and control system of the traveling trolley are assembled with the trolley frame as the main body , test after assembly; (3) installation of the cantilever frame of the traveling trolley: fix the cantilever to the frame of the traveling trolley with bolts, install a limit bracket at the corresponding position of the cantilever end of the cantilever, and set the cantilever in each cantilever Counterweight; (4) Hanging basket assembly installation: Install the upper assembly of the hanging basket in place, and connect the two diagonal braces of the lower assembly of the hanging basket with the two vertical rods of the upper assembly of the hanging basket. Set the folding component at the end of the hanging basket, connect the two ends of the working platform of the lower component of the hanging basket with the folding component, connect the chain lock end of the chain hoist with the lifting lug set at the front end of the working platform, and fix the other end of the chain hoist on the hanging On the vertical frame rod of the basket assembly, the folding and folding of the operation platform is realized by manually controlling the hand chain hoist, and protective guardrails are installed around the operation platform; (5) Hydraulic station installation: install the lifting hydraulic cylinder on the cantilever frame and Connect the head end of the piston rod to the top beam of the upper assembly of the hanging basket, and connect the lifting hydraulic cylinder to the hydraulic station through a high-pressure oil pipe.

The beneficial effects of the invention are: the overall structure of the invention is simple, the installation is simple, and the use is safe and reliable. The mobile hanging basket in the present invention can move along the direction of the bridge, and the working platform at the bottom of the beam can be raised and lowered by the hydraulic system, and at the same time, the working platform can be folded and folded by using the hand chain hoist, and it can be easily crossed when encountering obstacles during the moving process. The vertical space at the bottom of the bridge can be adjusted during the process, and can be moved and shrunk to one side of the beam body when not in use. When the invention is used for operation, the operation efficiency can be greatly improved, the safety risk of the beam bottom operation is reduced, and the driving safety of the electrified railway under the bridge is also guaranteed. The invention reduces the difficulty of construction under bridges spanning electrified railways, improves construction efficiency, and ensures the safety of construction personnel and railway business lines under bridges. The invention solves the problem in the prior art that the hanging basket cannot be moved in a complex environment, and solves the problem of limited construction space at the bottom of the beam.

Description of drawings

Fig. 1 is the structural representation in the specific embodiment of the present invention;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is a top view schematic diagram of Fig. 1;

Fig. 4 is the enlarged schematic view of the traveling trolley part in the present invention;

Fig. 5 is a three-dimensional schematic view in a specific embodiment of the present invention;

Fig. 6 is an enlarged schematic view of the limit bracket and the vertical rod in Fig. 5;

In the figure, 1. Vertical support rod, 2. Limiting bracket, 3. Top beam, 4. Piston rod end connection assembly, 5. Lifting hydraulic cylinder, 6. Cantilever frame, 7. Suspension rod, 8. Traveling wheel group , 81, driving wheel group, 82, driven wheel group, 83, guide wheel group, 9, motor, 10, track, 11, beam body, 12, protective railing, 13, lifting lug, 14, insulating nylon plate, 15, Working platform, 16. Collapsible component, 17. Diagonal brace, 18. Chain block, 19. Counterweight, 20. Hydraulic station, 21. Outer beam of cantilever frame, 22. Track mounting plate, 23. Vehicle frame, 24. Composite roller bearing, 25, bearing limit bar.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing by non-limiting embodiment:

As shown in the accompanying drawings, a mobile hanging basket for construction work under bridge beams across electrified railways includes a track 10 , a running mechanism, a hanging basket assembly, a lifting hydraulic cylinder 5 , and a hydraulic station 20 . The rails 10 are two parallel ones, using P50 steel rails. The rails 10 are fixed on the bridge along the bridge direction through the rail mounting plate 22 arranged at the bottom of the rails. The distance between the centers of the two rails is 600 mm. Set the limit stopper. The traveling mechanism includes two traveling trolleys with traveling wheel sets 8 at the bottom, and a power device for driving the traveling trolleys. on track 10. The walking wheel group of walking trolley is installed on vehicle frame 23 bottoms, and the traveling wheel group 8 of each described walking trolley comprises two groups of driving wheels 81, two groups of driven wheels 82, every group of driving wheels 81 and driven wheels 82 The bottom of each is provided with two groups of guide wheel sets 83 that cooperate with the track 10, and the driving wheel set 81 is driven by the motor 9. The upper part of the vehicle frame 23 of the walking trolley is fixedly provided with a cantilever frame 6, the cantilever frame 6 is made of section steel, and its upper end has a cantilevered end. . The hanging basket assembly includes a hanging basket upper assembly and a hanging basket lower assembly, and the hanging basket upper assembly includes two vertically arranged vertical rods 1 fixedly connected between the top ends of the two vertical rack rods 1 The top crossbeam 3 of the top beam 3, the two vertical frame rods 1 are movably arranged up and down respectively between the two groups of limit brackets 2 on the cantilever frame 6 of the two groups of walking trolleys, and the vertical frame rods 1 pass through the limit brackets on both sides. Position bracket 2 is limited, and the outer side of cantilever frame 6 is provided with cantilever frame outer beam 21 to enclose vertical frame bar 1 in the cantilever frame. The lower assembly of the hanging basket includes a platform assembly and a chain block 18. The platform assembly includes a working platform 15 and two diagonal braces 17, and the two diagonal braces 17 are respectively connected to the two vertical poles 1. At the lower end, the two ends of the working platform 15 are respectively connected to the two diagonal braces 17 through the retractable components 16 arranged on the diagonal braces 17, and the working platform 15 can rotate around the retractable components. The collapsible assembly 16 is prior art and includes a collapsible connecting plate and a pin shaft with pin holes. Two lifting lugs 13 are respectively arranged on both sides of the front end of the working platform 15, and the two lifting lugs 13 are respectively connected to one of the chain hoists 18, and the hook ends of the two chain hoists 18 are respectively connected to the two chain hoists. On the vertical frame bar 1. Around the working platform 15 is provided with a protective railing 12 connected by hinges that can be folded inward. An insulating nylon plate 14 is fixed at the bottom of the working platform 15 . There are two lifting hydraulic cylinders 5, which are respectively arranged on the two traveling trolleys. The cylinder body of the lifting hydraulic cylinder 5 is fixed on the cantilever frame 6, and the piston rod of the lifting hydraulic cylinder 5 is connected to the The top beam 3 of the hanging basket upper assembly is connected, and the hydraulic lifting cylinder 5 is connected with the hydraulic station 20 through a high-pressure oil pipe. The hydraulic station 20 is an existing technology, and mainly includes a hydraulic pump, a hydraulic valve block and matching high-pressure oil pipes and other accessories. The hydraulic station 20 is connected with the traveling trolley through a connecting member, and it can move with the traveling trolley. A counterweight 19 is arranged inside each suspension bracket 6 .

In order to ensure the vertical movement of the vertical rod 1, in this embodiment, the limit bracket 2 is provided with a composite roller bearing 24, the vertical rod 1 is provided with a bearing limit bar 25, and the composite roller The bearings 24 are located between the bearing limit bars 25 on the vertical frame bar 1 .

The above-mentioned construction method of the mobile hanging basket for the construction work under the span electrified railway bridge comprises the following steps: (1) track installation: clear the bridge deck in the track installation area, and use bolts to fix the track mounting plate 22 on the bridge deck of the beam body flange , the track 10 and the track mounting plate 22 are welded firmly; (2) the power part installation of the trolley: take the frame 23 of the trolley as the main body, assemble the wheel set 8, the power unit and the control system of the trolley, and test after assembly (3) installation of the cantilever frame of the traveling trolley: the cantilever support 6 is fixedly installed on the vehicle frame 23 of the traveling trolley with bolts, and the limit bracket 2 is installed at the corresponding position of the cantilever end of the cantilever support 6, and in each cantilever support 6 Counterweight 19 is set; (4) hanging basket assembly installation: the upper assembly of the hanging basket is installed in place, then the outer crossbeam 21 of the cantilever frame is installed and fixed, and then the two diagonal braces 17 of the lower assembly of the hanging basket are connected with the two braces of the upper assembly of the hanging basket. The vertical frame rods 1 are fixedly connected together, and the folding assembly 16 is arranged at the outer end of the diagonal brace 17, and the two ends of the working platform 15 of the lower assembly of the hanging basket are connected with the folding assembly 16, and the chains of the two chain hoists 18 are connected to each other. The lock ends are respectively connected with the two lifting lugs 13 arranged at the front end of the work platform 15, and the other end of the chain hoist 18 is fixed on the vertical frame rod 1 of the upper assembly of the hanging basket, and the operation platform is realized by manually controlling the chain hoist 18. Collapse and fold, and install protective guardrails 12 around the work platform 15; (5) hydraulic station installation: install the lifting hydraulic cylinder 5 on the cantilever frame 6 and connect the head end of the piston rod to the top beam 3 of the upper assembly of the hanging basket , the hydraulic station is connected with the traveling trolley, and the lifting hydraulic cylinder 5 is connected with the hydraulic station 20 through a high-pressure oil pipe. After the installation is completed, test run first to ensure that it is safe and reliable before normal use.

When the present invention works, the traveling trolley can move along the track 10 along the bridge direction under the drive of the power device, and at the same time drive the working platform 15 under the beam to move along the bridge direction together, and the piston rod of the lifting cylinder 5 can drive The top beam 3 of the upper assembly of the hanging basket moves up and down, and then drives the vertical frame bar 1 of the upper assembly of the hanging basket to move up and down, thereby driving the working platform 15 to lift. The work platform 15 in the present invention can be folded and folded by the hand chain block 18, and the work platform 15 can be controlled to be in a normal working position or the work platform 15 can be folded and folded by manually controlling the hand chain block 18. During the movement of the hanging basket, if there is an obstacle at the bottom of the beam or the equipment under the bridge, the protective railing 12 can be folded inward and the operating platform 15 can be folded and folded by manually controlling the chain hoist 18, and then the hydraulic pressure can be controlled. The system lifts the hanging basket assembly, so that the hanging basket is lifted as a whole and attached to the outside of the beam body, and can continue to move. After arriving at the designated construction site, the hydraulic system can be controlled to lower the hanging basket assembly, the chain hoist 18 is controlled to expand the work platform 15, and the protective railing is manually expanded and fixed, so that the operation can be carried out at the bottom of the beam.

Other parts in this embodiment are all prior art, and will not be repeated here.

Claims (7)

1. construction operation movable hanging basket under a kind of across electric railway Bridge Beam, it is characterized in that: including track (10), traveling machine Structure, Hanging Basket component, lifting hydraulic cylinder (5), hydraulic station (20), the track (10) along bridge to being fixed on bridge floor, it is described Running mechanism includes traveling trolley with travelling wheel group (8) of two lower parts, the power device for driving the traveling of traveling trolley, and two The traveling trolley setting spaced apart, the traveling trolley are set to the track (10) by its travelling wheel group (8) On, the vehicle frame top of the traveling trolley is fixedly installed cantilever shalving (6), and the overhanging end of the cantilever shalving (6) is relatively fixed to be set There are two groups of limiting brackets (2), the Hanging Basket component includes component and Hanging Basket lower component on Hanging Basket, and component includes two on the Hanging Basket The vertically arranged vertical hack lever (1) of root, the top cross-bar (3) being fixedly connected between two vertical hack lever (1) tops, two Vertical hack lever (1) described in root is movably disposed at two groups of limiting brackets on the cantilever shalving (6) of two groups of traveling trolleies up and down respectively (2) between, the Hanging Basket lower component includes platform assembly, chain block (18), and the platform assembly includes job platform (15) With two diagonal braces (17), two diagonal braces (17) are connected to the lower end of two vertical hack levers (1), the operation horizontal The both ends of platform (15) are rotationally connect with two diagonal braces (17) respectively, in the front end two sides of the job platform (15) point Not Lian Jie a chain block (18), the hook end of two chain blocks (18) be connected to two it is described vertical On hack lever (1), the lifting hydraulic cylinder (5) is two, is separately positioned on two traveling trolleies, the lifting hydraulic cylinder (5) cylinder body is fixed on the cantilever shalving (6), the top of component on the piston rod and the Hanging Basket of the lifting hydraulic cylinder (5) Portion's crossbeam (3) connection, the hydraulic lifting oil cylinder (5) are connect by high-pressure oil pipe with the hydraulic station (20).

2. construction operation movable hanging basket under across electric railway Bridge Beam according to claim 1, it is characterized in that: the work The guard rail (12) that can be folded inwardly of hinge connection is provided with around industry platform (15).

3. construction operation movable hanging basket under across electric railway Bridge Beam according to claim 1, it is characterized in that: the rail Road (10) is two disposed in parallel, the travelling wheel group (8) of each traveling trolley include two groups of active wheels, two groups it is driven The lower part of wheel group, every group of active wheels and driven wheel group is provided with the guide wheel group of two groups with track (10) cooperation.

4. construction operation movable hanging basket under across electric railway Bridge Beam according to claim 1, it is characterized in that: the limit It is provided with composite track roller on position bracket (2), is provided with bearing positive stop strip, the composite rolling wheel on the vertical hack lever (1) Bearing is located between the bearing positive stop strip on the vertical hack lever (1).

5. construction operation movable hanging basket under across electric railway Bridge Beam according to claim 1 or 2 or 3 or 4, feature It is: is fixed with insulated nylon plate in the job platform bottom.

6. construction operation movable hanging basket under across electric railway Bridge Beam according to claim 1 or 2 or 3 or 4, feature It is: is provided with counterweight in each cantilever shalving (6).

7. the construction party of construction operation movable hanging basket under a kind of across electric railway Bridge Beam a method as claimed in any one of claims 1 to 5 Method, it is characterized in that: including the following steps: (1) track installation: the bridge floor in cleaning track installation region is pacified track using bolt Loading board is fixed on bridge floor, by track and track mount plate firm welding；(2) power section of traveling trolley is installed: small with traveling Based on vehicle carriage, travelling wheel group, power device and the control system of assembling traveling trolley are tested after assembling；(3) traveling The installation of trolley cantilever shalving: cantilever shalving being fixed by bolts and is mounted in traveling car frame, corresponding at the overhanging end of cantilever shalving Limiting bracket is installed in position, and counterweight is arranged in each cantilever shalving；(4) Hanging Basket component is installed: component on Hanging Basket is installed in place, Two diagonal braces of Hanging Basket lower component and two vertical hack levers of component on Hanging Basket are fixed together, are set in diagonal brace outboard end Set and fold component, the job platform both ends of Hanging Basket lower component are connect with component is folded, by the chain lock end of chain block be located at The lifting lug of job platform front end connects, and the other end of chain block is fixed on Hanging Basket on the vertical hack lever of component, by artificial Control chain block realizes folding, folding for job platform, installs protection guardrail in job platform surrounding；(5) hydraulic station is installed: Lifting hydraulic cylinder is mounted on cantilever shalving and is connected the top cross-bar of component on the head end and Hanging Basket of piston rod, raise-lower hydraulic Cylinder is connect by high-pressure oil pipe with hydraulic station.