CN113184742B

CN113184742B - Bridge crane installation construction method

Info

Publication number: CN113184742B
Application number: CN202110517117.7A
Authority: CN
Inventors: 李文杰; 何爱珍; 颜才亮; 戴新型; 彭智良
Original assignee: Loudi Water Conservancy And Hydropower Engineering Construction Co ltd
Current assignee: Loudi Water Conservancy And Hydropower Engineering Construction Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2022-11-04
Anticipated expiration: 2041-05-12
Also published as: CN113184742A

Abstract

The application relates to a bridge crane installation construction method, which belongs to the field of road and bridge construction methods and comprises the following steps: step 1, construction preparation, and checking calculation of stress of a hoisting system; step 2, installing a hoisting system; step 3, disassembling the bridge crane into a main beam, a trolley frame, a main hoisting device and an auxiliary hoisting device; step 4, hoisting the main beam by using a hoisting system; step 5, hoisting the rest parts of the bridge crane by using the hoisting system; the hoist and mount system includes supporting component and traction assembly, the supporting component includes the support frame, the support frame includes hoisting point anchor plate and the landing leg of being connected with hoisting point anchor plate, traction assembly includes the assembly pulley and wears to establish the haulage rope on the assembly pulley, the one end of haulage rope is connected with the centre gripping subassembly that is used for being connected with hoist parts, and the other end is used for connecting the hoist engine. This application utensil promotes the efficiency of construction of bridge crane installation in narrow and small tunnel's effect.

Description

Bridge crane installation construction method

Technical Field

The application relates to the field of road and bridge construction methods, in particular to a bridge crane installation construction method.

Background

In water conservancy and hydropower engineering, a bridge crane is widely applied to installation of mechanical equipment such as a generator set and a working gate as important hoisting equipment, a bridge frame of the bridge crane longitudinally runs along rails laid on elevated frames on two sides, and the space below the bridge frame can be fully utilized to hoist materials without being hindered by ground equipment.

At present, when a narrow tunnel is constructed, because large-scale hoisting equipment cannot enter, a traditional construction method for installing the bridge crane is to drill a hole in the top of the tunnel in advance, construct a long anchor rod, and hoist the bridge crane by using the long anchor rod as a stress point through a pulley set.

In view of the above-mentioned related art, the inventors thought that there was a drawback that a large number of drilled holes resulted in a long construction time.

Disclosure of Invention

In order to improve the construction efficiency of bridge crane installation in a narrow tunnel, the application provides a bridge crane installation construction method.

The application provides a bridge crane installation construction method, adopts following technical scheme:

a bridge crane installation construction method comprises the following steps:

step 1, construction preparation, and checking calculation of stress of a hoisting system;

step 2, installing a hoisting system;

step 3, disassembling the bridge crane into a main beam, a trolley frame, a main lifting device and an auxiliary lifting device;

step 4, hoisting the main beam by using a hoisting system;

step 5, hoisting the rest parts of the bridge crane by using the hoisting system;

the hoisting system comprises a supporting assembly and a traction assembly, the supporting assembly comprises a supporting frame, the supporting frame comprises a hoisting point anchoring plate and supporting legs connected with the hoisting point anchoring plate, the hoisting point anchoring plate is used for being fixed on the top wall of the tunnel, the traction assembly comprises a pulley assembly and a traction rope arranged on the pulley block in a penetrating mode, one end of the traction rope is connected with a clamping assembly used for being connected with a crane component, the other end of the traction rope is used for being connected with a winch, and the pulley assembly comprises a first pulley block fixed on the hoisting point anchoring plate.

Through adopting above-mentioned technical scheme, when installation bridge crane, can be with the bridge crane split into several big parts earlier, then hoist through hoist and mount system respectively, hoist and mount system is when putting up, only need to fix hoisting point anchor plate on the roof in tunnel, actual bearing member is the landing leg, two hoisting point anchor plates are just in order to prevent that hoist and mount in-process landing leg from appearing removing, need not to bore hole construction length stock in the tunnel, construction cycle is shorter, can change the direction of force simultaneously through setting up loose pulley assembly, make the hoist engine can rise at subaerial traction crane part.

Optionally, the clamping assembly comprises a clamping seat, a clamping groove is formed in the clamping seat, two baffle plates are arranged on two sides of an opening of the clamping groove respectively and hinged to the clamping seat, the two baffle plates can seal the clamping groove when being parallel, a locking rod is rotatably connected to one of the baffle plates, and a locking seat in threaded fit with the locking rod is arranged on the other baffle plate.

Through adopting above-mentioned technical scheme, when the girder to the hoist, can place the girder in the centre gripping recess, then rotatory baffle makes two baffles block the girder, avoids the girder to drop from the centre gripping recess, can make two baffles link together through the cooperation of locking bolt and locking seat, fixes the position of baffle.

Optionally, hooks are arranged in the clamping seat and the clamping groove, an articulated shaft is arranged on the baffle and is rotatably connected with the clamping seat, a locking block is connected to the articulated shaft through threads, and the rotation of the articulated shaft can be limited through friction when the locking block is tightly attached to the clamping seat.

Through adopting above-mentioned technical scheme, when parts such as frame, main play to rise device, vice play to rise the device to the hoist, can use the couple to hook on spare part, the baffle rotates to hug closely on spare part in the centre gripping recess simultaneously, can restrict the rotation of baffle through locking latch segment, makes the baffle can carry on spacingly to spare part, reduces rocking of hoist and mount in-process spare part.

Optionally, the pulley assembly further comprises a first fixed pulley fixed on the ground and a second fixed pulley fixed on the top wall of the tunnel, and the traction rope sequentially passes through the first fixed pulley, the second fixed pulley block and the first pulley block.

Through adopting above-mentioned technical scheme, first fixed pulley and second fixed pulley can change the direction of force, and first assembly pulley can be laborsaving, reduces the power of doing work of tractor, and is comparatively energy-conserving.

Optionally, two clamping plates arranged in parallel are arranged in the clamping groove, a clamping rod is connected to the clamping seat through a thread, and the clamping rod penetrates through the clamping seat to be connected with the clamping plates.

Through adopting above-mentioned technical scheme, when rotatory supporting rod, threaded connection through supporting rod and grip slipper can make supporting rod axial displacement, makes the grip block hug closely on crane part, further carries on spacingly to crane part, and stability is better.

Optionally, a plurality of limiting blocks are arranged on the clamping plate along the circumferential direction, and limiting grooves matched with the limiting blocks are formed in the clamping plate.

Through adopting above-mentioned technical scheme, at the in-process that the grip block removed to the hoist part, the stopper is pegged graft to the spacing inslot, can make the limiting plate can not take place circumferential direction and rotate, and is comparatively stable at the centre gripping in-process.

Optionally, the supporting leg is hinged to the lifting point anchoring plate, a supporting seat is arranged at one end, far away from the lifting point anchoring plate, of the supporting leg, and a fixing bolt is arranged on the supporting seat.

Through adopting above-mentioned technical scheme, the landing leg can rotate with hoisting point anchor board relatively, can adjust according to the height in tunnel, makes hoisting point anchor board hug closely on the roof in tunnel, and the fixed thread on the supporting seat can prescribe a limit to the position of landing leg, makes hoist and mount in-process landing leg can not take place to remove.

Optionally, the supporting leg is connected with the supporting seat through a spherical hinge.

Through adopting above-mentioned technical scheme, when fixing subaerial to the supporting seat, can rotate the supporting seat, make supporting seat and ground parallel, great with the area of contact on ground, it is fixed more stable.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the hoisting system, when the bridge crane is installed, the bridge crane can be firstly split into a plurality of parts, then the parts are respectively hoisted by the hoisting system, when the hoisting system is arranged, an anchor rod does not need to be arranged in the tunnel, the construction time is short, and the working efficiency is high;

2. the clamping seat is arranged, and the baffle plate hinged with the clamping seat is arranged on the clamping seat, so that the clamping seat can be used for hoisting a main beam of the crane and hoisting other parts of the crane, the use is convenient, and different clamping seats are not required to be replaced;

3. the bridge crane hoisting system is simple and quick to set up, can be immediately put into use through simple detection after being set up, and has no influence on subsequent key line procedures.

Drawings

Fig. 1 is a schematic structural diagram of a bridge crane construction hoisting system according to an embodiment of the present application;

fig. 2 is a schematic structural view of the first pulley block of fig. 1;

FIG. 3 is a schematic view of the clamping assembly of FIG. 1 clamping a main beam;

FIG. 4 is a schematic view of the clamping assembly of FIG. 1 clamping another component;

fig. 5 is a flowchart of a bridge crane installation construction method according to the present embodiment.

Description of reference numerals: 1. a hoist; 2. a support frame; 21. a hoisting point anchoring plate; 22. a support leg; 23. a supporting base; 24. fixing the bolt; 3. a hauling rope; 4. hooking; 5. a sheave assembly; 51. a first fixed pulley; 52. a second fixed pulley; 53. a third fixed pulley; 54. a movable pulley; 6. a clamping assembly; 61. a clamping seat; 62. connecting ropes; 63. a clamping groove; 64. a baffle plate; 65. hinging a shaft; 66. a locking block; 7. a locking lever; 8. a locking seat; 9. a limiting groove; 10. a clamping plate; 11. a clamping rod; 12. and a limiting block.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

On the one hand, this application embodiment discloses bridge crane construction hoist and mount system, refer to fig. 1, including supporting component and traction assembly, the supporting component is as the fulcrum, can hoist the part of hoist through traction assembly.

The supporting component comprises a supporting frame 2, the supporting frame 2 comprises a lifting point anchoring plate 21 and supporting legs 22 connected with the lifting point anchoring plate 21, one ends of the supporting legs 22 are hinged to the lifting point anchoring plate 21, the number of the supporting legs 22 is at least three groups, the number of the supporting legs 22 in the embodiment is four groups, and the lifting process is not prone to toppling.

Landing leg 22 is kept away from the one end ball pivot of hoisting point anchor plate 21 and is equipped with supporting seat 23, wear to be equipped with fixing bolt 24 on the supporting seat 23, when installing supporting component, it makes hoisting point anchor plate 21 hug closely on the roof in tunnel to rotate landing leg 22, then rotate supporting seat 23, make supporting seat 23 hug closely subaerial, and fix supporting seat 23 subaerial supporting seat 23 with supporting seat 23 locking through fixing bolt 24, fix hoisting point anchor plate 21 on the roof in tunnel through the bolt after that, make supporting component at the difficult emergence of hoist and mount remove.

Referring to fig. 1 and 2, the traction assembly includes pulley assembly 5 and haulage rope 3 of wearing to establish on pulley assembly 5, and the one end of haulage rope 3 is connected with the centre gripping subassembly 6 that is used for being connected with hoist part, and the other end is used for connecting hoist 1, and hoist 1 is fixed subaerial, can roll up haulage rope 3 and then drive the hoist part and rise when hoist 1 switch on.

The pulley assembly 5 comprises a first fixed pulley 51 fixed on the ground, a second fixed pulley 52 fixed on the top wall of the tunnel and a first pulley block fixed on the hoisting point anchoring plate 21, the second fixed pulley 52 is positioned right above the first fixed pulley 51, and the traction rope 3 sequentially passes through the first fixed pulley 51, the second fixed pulley 52 group and the first pulley block.

The first pulley block comprises a third fixed pulley 53 fixed on the hoisting point anchoring plate 21 and a movable pulley 54 suspended below the third fixed pulley 53, and a hook used for being connected with the clamping component 6 is arranged on the movable pulley 54. Can play the effect of economize on electricity through first assembly pulley.

Referring to fig. 3 and 4, the clamping assembly 6 includes a clamping seat 61, a connecting rope 62 is provided on the top of the clamping seat 61, and the connecting rope 62 is hung on the hook of the movable pulley 54. The lower surface of grip slipper 61 is formed with centre gripping recess 63, and centre gripping recess 63 is used for holding hoist spare part, and the open-ended both sides of centre gripping recess 63 respectively are provided with a baffle 64, are fixed with articulated shaft 65 on the baffle 64, and articulated shaft 65 wears to establish on grip slipper 61 and rotates with grip slipper 61 to be connected, and the articulated shaft 65 of two baffles 64 is parallel and is in on the same horizontal plane. One of the baffles 64 is rotatably connected with a locking rod 7, and the other baffle 64 is provided with a locking seat 8 which is in threaded fit with the locking rod 7. The locking bars 7 and the locking seats 8 are arranged in groups, in this embodiment in groups, along the borderline between the two baffles 64. The hinge shaft 65 is threadedly connected with a locking block 66, and the rotation of the hinge shaft 65 can be limited by friction when the locking block 66 is tightly attached to the holder 61.

When the main beam of the crane is hoisted, the main beam horizontally penetrates through the clamping groove 63, the two baffle plates 64 rotate to the horizontal state to support the main beam, the locking rod 7 is in threaded connection in the locking seat 8 at the moment, the two baffle plates 64 are connected, the locking block 66 is screwed tightly and tightly attached to the clamping seat 61, and the rotation of the baffle plates 64 is further limited.

Be provided with couple 4 in grip slipper 61 and the centre gripping recess 63, couple 4 is used for the other parts of carry hoist, is vertical state during these parts hoists, and one end is located centre gripping recess 63, and centre gripping recess 63 is worn out downwards to one end. At this time, the baffle plate 64 rotates to the inner side of the clamping groove 63 and abuts against the side wall of the crane component, so that the shaking during hoisting is reduced, and the locking rod 7 and the locking seat 8 are in a separated state.

Be provided with the grip block 10 of two parallel arrangement in the centre gripping recess 63, threaded connection has supporting rod 11 on the grip block 61, and supporting rod 11 passes grip block 61 and is connected with grip block 10 rotation, can order about supporting rod 11 axial displacement through screw-thread fit during rotatory supporting rod 11, and then drives grip block 10 and remove, makes grip block 10 hug closely on the lateral wall of hoist part, further improves stability.

A plurality of limiting blocks 12 are arranged on the clamping plate 10 along the circumferential direction, and limiting grooves 9 matched with the limiting blocks 12 are formed in the clamping plate 10. When the limiting block 12 is clamped in the limiting groove 9, the rotation of the clamping plate 10 can be limited.

The implementation principle of a bridge crane construction hoisting system in the embodiment of the application is as follows: regard as bearing the piece through supporting component, set up the tractor subaerial, hoist the spare part of hoist with the size through loose pulley assembly 5 change the direction of traction force, centre gripping subassembly 6 has two kinds of different operating condition with the spare part that corresponds no, when hoist and mount bridge crane's crossbeam, two baffles 64 are in the level and change the attitude and support the crossbeam, when other parts of hoist and mount bridge crane, two baffles 64 are rotatory to centre gripping recess 63 inboardly, support spare part, the reduction is rocked.

The embodiment also discloses a bridge crane installation and construction method, which comprises the following steps with reference to fig. 5:

step 1, construction preparation, namely, checking calculation of stress of a hoisting system;

step 2, installing a hoisting system, wherein the installing of the hoisting system comprises manufacturing an installing support component, installing a winch 1 and installing a pulley component 5;

step 3, detecting the hoisting system, performing the next step if the detection is qualified, debugging the hoisting system if the detection is unqualified, and continuing to detect after the debugging is finished;

step 4, disassembling the bridge crane into a main beam, a trolley frame, a main hoisting device and an auxiliary hoisting device;

step 5, hoisting the main beam by using a hoisting system;

step 6, hoisting the rest parts of the bridge crane by using the hoisting system;

step 7, running the crane in a test mode, if the running is qualified, performing the next step, and if the running is not qualified, adjusting the bridge crane;

and 8, dismantling the hoisting system.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A bridge crane installation construction method is characterized by comprising the following steps:

step 2, installing a hoisting system;

step 3, disassembling the bridge crane into a main beam, a trolley frame, a main hoisting device and an auxiliary hoisting device;

step 4, hoisting the main beam by using a hoisting system;

the hoisting system comprises a supporting assembly and a traction assembly, wherein the supporting assembly comprises a supporting frame (2), the supporting frame (2) comprises a hoisting point anchoring plate (21) and a supporting leg (22) connected with the hoisting point anchoring plate (21), the hoisting point anchoring plate (21) is used for being fixed on the top wall of the tunnel, the traction assembly comprises a pulley assembly (5) and a traction rope (3) penetrating through the pulley assembly (5), one end of the traction rope (3) is connected with a clamping assembly (6) used for being connected with a crane part, the other end of the traction rope is used for being connected with a winch (1), and the pulley assembly (5) comprises a first pulley block fixed on the hoisting point anchoring plate (21); the clamping assembly (6) comprises a clamping seat (61), a clamping groove (63) is formed in the clamping seat (61), two baffle plates (64) are respectively arranged on two sides of an opening of the clamping groove (63), the baffle plates (64) are hinged with the clamping seat (61), the clamping groove (63) can be closed when the two baffle plates (64) are parallel, one baffle plate (64) is rotatably connected with a locking rod (7), and a locking seat (8) in threaded fit with the locking rod (7) is arranged on the other baffle plate (64); be provided with couple (4) in grip slipper (61) and centre gripping recess (63), be provided with articulated shaft (65) on baffle (64), articulated shaft (65) rotate with grip slipper (61) and are connected, threaded connection has latch segment (66) on articulated shaft (65), can restrict the rotation of articulated shaft (65) through frictional force when latch segment (66) hug closely on grip slipper (61).

2. The bridge crane installation construction method according to claim 1, wherein: pulley assembly (5) still include fix on ground first fixed pulley (51) and fix second fixed pulley (52) at the tunnel roof, haulage rope (3) pass first fixed pulley (51), second fixed pulley (52) group and first assembly pulley in proper order.

3. The bridge crane installation construction method according to claim 1, wherein: two clamping plates (10) which are arranged in parallel are arranged in the clamping groove (63), a clamping rod (11) is connected to the clamping seat (61) in a threaded mode, and the clamping rod (11) penetrates through the clamping seat (61) to be connected with the clamping plates (10).

4. The bridge crane installation and construction method according to claim 3, wherein: a plurality of limiting blocks (12) are arranged on the clamping plate (10) along the circumferential direction, and limiting grooves (9) matched with the limiting blocks (12) are formed in the clamping plate (10).

5. The bridge crane installation construction method according to claim 1, wherein: the supporting legs (22) are hinged to the lifting point anchoring plate (21), one ends, far away from the lifting point anchoring plate (21), of the supporting legs (22) are provided with supporting seats (23), and fixing bolts (24) are arranged on the supporting seats (23).

6. The bridge crane installation and construction method according to claim 5, wherein: the supporting legs (22) are connected with the supporting seats (23) in a spherical hinge mode.