A matching structure of bridge erecting machine legs and main beam

Abstract

The present invention discloses a matching structure of a bridge erecting machine support leg and a main beam, wherein a gantry support leg is vertically arranged on one side of the main beam, and tracks are symmetrically arranged on the upper and lower sides of the main beam, and cover plates are arranged above the tracks, and the cover plates are perpendicular to the gantry support legs, and the cover plates are fixedly connected to the gantry support legs; the multifunctional circulating chain is driven by the traction wheel of the bridge erecting machine, and the support leg rollers under the cover plate are dragged to roll on the track through a shackle connected on one side, so that when the longitudinal span of the bridge is changed, the main beam of the bridge erecting machine is aligned with the bridge and piers to be erected, and the main beam is moved to a suitable position without manually inserting and pulling out positioning pins, thereby improving the efficiency of the staff in erecting the bridge; the lifting and lowering of the guide beam is realized by a winch arranged on the upper side of the guide beam, and the operation of the guide beam is more stable through the retractable auxiliary top rod and auxiliary diagonal rod, thereby improving the stability of the bridge erecting machine.

Description

Technical Field

[0001] The invention relates to a matching structure, in particular to a matching structure of a bridge erection machine support leg and a main beam, belonging to the technical field of bridge erection application. Background Art

[0002] A bridge erection machine is a device that places prefabricated beams on prefabricated bridge piers. A bridge erection machine belongs to the category of cranes, because its main function is to lift beams, transport them to the location, and then put them down. However, it is very different from a general crane. It requires harsh conditions and has beam movement, or longitudinal movement.

[0003] Comparative document CN110184945A discloses a four-front outrigger for a bridge erecting machine and an erection method thereof, wherein the bridge erecting machine comprises a main beam and a front outrigger cross beam, wherein the front outrigger cross beam is arranged on the main beam and can move longitudinally on the main beam; the characteristic is that the four-front outrigger system comprises a row of four front outriggers, all of which are hingedly arranged at the lower end of the front outrigger cross beam, and the upright column of each front outrigger can be extended and retracted in the height direction and rotated in the longitudinal direction, and the main longitudinal beam of the steel beam passes through the front outrigger by alternately extending and retracting the front outriggers and rotating longitudinally, so that the bridge erecting machine can successively erect the left and right steel beams, thereby realizing rapid lifting of the steel beams. The bridge erecting machine of the present invention is used for construction, and the additional stress generated when the front cross beam is installed later is avoided, so that the bridge state of the steel beam is the same as the design, and the high-altitude operation is reduced. The front cross beam is installed at the steel beam assembly site, and the bridge erecting machine passes through the hole once, and can simultaneously lift the left and right steel beams, so that the construction progress is fast and the safety is high.

[0004] However, the existing bridge-building machine achieves variable span and longitudinal movement by rolling on the track driven by a motor (hydraulic motor), a reducer, and a gear rack transmission; the displacement position is fixed, and the corresponding position must be manually positioned with a positioning pin; the displacement position size is fixed, and when the bridge pier distance is not at the corresponding displacement position of the bridge-building machine due to construction errors, repeated adjustments are required; the structure is complex, the failure rate is high, and maintenance is difficult.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions. Summary of the invention

[0006] The purpose of the present invention is to solve the technical problems that the existing bridge-building machine has the problem of variable span and longitudinal movement, that is, the rollers are driven by motors (hydraulic motors), reducers, and gear racks to roll on tracks; the displacement position is fixed, and the corresponding position needs to be manually positioned with positioning pins; the displacement position size is fixed, and when the pier distance is not at the corresponding displacement position of the bridge-building machine due to construction errors, it needs to be repeatedly adjusted; the structure is complex, the failure rate is high, and maintenance is difficult. The present invention provides a matching structure between the legs and the main beam of the bridge-building machine, which drives the multifunctional circulating chain through the traction wheel of the bridge-building machine, and drags the leg rollers under the cover plate to roll on the track through the shackles connected on one side, so that when the longitudinal span of the bridge is changed, the main beam of the bridge-building machine is aligned with the bridge and the piers to be erected, and the main beam is moved to a suitable position without the need to manually insert and remove positioning pins, thereby improving the efficiency of the staff in erecting the bridge; the winch arranged on the upper side of the guide beam is used to achieve The lifting and lowering of the guide beam is made smoother by the retractable auxiliary jack and auxiliary diagonal rod, thereby improving the stability of the bridge-building machine; the jacking cylinder arranged on one side of the shaft sleeve mouth allows the gantry legs to bear the loads at both ends of the main beam during longitudinal movement, thereby reducing the damage to the fastening bolts on the main beam. The jacking cylinder has a simple structure, low failure rate and convenient maintenance; the hydraulic cylinder arranged at the lower end of the articulated shaft makes the articulated shaft more stable when dragging the T-beam, and the hydraulic cylinder is easy to operate, thereby improving the efficiency of bridge erection; the steel wire rope is pulled by the motor to retract and tighten the steel wire rope, thereby realizing the longitudinal movement of the beam transport plate. The bridge-building machine is easy to debug and can meet the construction error of the bridge pier distance; the capstan and connecting pillars arranged on one side of the articulated shaft allow the articulated shaft and the main beam to be buffered during longitudinal movement, thereby improving the safety of the bridge-building machine during use and reducing the cost of the bridge-building machine.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A matching structure of a bridge erecting machine support leg and a main beam, comprising a main beam, a gantry support leg and a circulating chain;

[0009] A gantry leg is vertically arranged on one side of the main beam, and tracks are symmetrically arranged on the upper and lower sides of the main beam. Cover plates are arranged above the tracks, and the cover plates are perpendicular to the gantry legs and fixedly connected to the gantry legs;

[0010] A plurality of leg rollers are arranged on the lower side of the cover plate, and the leg rollers are movably connected to the cover plate. One side of the leg roller is arranged in the track, and two auxiliary inclined rods are arranged on the upper side of the cover plate above, and the auxiliary inclined rods are arranged on both sides of the gantry legs;

[0011] A guide beam is vertically arranged at the upper end of the gantry leg, the top ends of the auxiliary inclined rod and the auxiliary top rod are fixedly connected to the guide beam, a hanging wheel is arranged at the upper end of the auxiliary inclined rod on the left side, steel wire ropes are hung on both sides of the hanging wheel, the steel wire ropes are movably connected to the hanging wheel, and the lower end of the steel wire rope is fixedly connected to a beam transport plate;

[0012] The lower end of the gantry leg is provided with a shaft sleeve opening, a hinge shaft is sleeved inside the shaft sleeve opening, a plurality of pin shaft holes are symmetrically provided on both sides of the hinge shaft, a connecting pillar is provided on one side of the hinge shaft, a capstan seat is provided on one side of the hinge shaft and the lower side of the main beam, both ends of the connecting pillar are sleeved in the capstan seat, and the hinge shaft and the main beam are movably connected through the connecting pillar;

[0013] A traction wheel is provided on the upper side of the main beam, and a circulating chain is sleeved on the traction wheel. The circulating chain is arranged parallel to the upper side of the main beam, and a shackle is provided on one side of the circulating chain, and the shackle is fixedly connected to the upper cover plate.

[0014] Preferably, a winch is provided on the upper side of the guide beam, and a fence is provided on one side of the winch.

[0015] Preferably, an auxiliary top rod is provided on one side of the auxiliary diagonal rod, the auxiliary diagonal rod and the auxiliary top rod are both movably connected to the cover plate, and the auxiliary top rod is perpendicular to the main beam.

[0016] Preferably, the auxiliary diagonal rod and the auxiliary top rod are both telescopic rods, and the telescopic parts of the auxiliary diagonal rod and the auxiliary top rod are fixed by bolts.

[0017] Preferably, a lifting cylinder is vertically provided on one side of the shaft sleeve opening, and the lifting cylinder is fixedly connected to the shaft sleeve opening.

[0018] Preferably, a T-beam is provided on the lower side of the articulated shaft, and a hydraulic cylinder is provided on one side of the lower end of the articulated shaft.

[0019] A matching structure of a bridge erecting machine support leg and a main beam, the specific steps comprising:

[0020] Step 1: Check the tightness of each fastening bolt between the main beam and the gantry legs of the bridge erecting machine;

[0021] Step 2: Release the longitudinal movement constraints of the shaft sleeve opening and the cover plate on the main beam of the bridge erecting machine;

[0022] Step 3: Start the traction wheel to operate the circulating chain, drag the outrigger rollers to roll on the track, and align the main beam with the bridge and piers to be built;

[0023] Step 4: Start the winch to lift the guide beam, start the motor to pull the wire rope to realize the longitudinal movement of the beam transport plate, open the lifting cylinder of the gantry legs, wait for the beam transport plate to be transported to the top of the beam, and stop the longitudinal movement;

[0024] Step 5: Start the hydraulic cylinder of the articulated shaft to constrain the longitudinal movement of the articulated shaft and the T-beam.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The multifunctional circulating chain is driven by the traction wheel of the bridge erecting machine, and the leg rollers under the cover plate are dragged to roll on the track through the shackle connected on one side, so that when the longitudinal span of the bridge is changed, the main beam of the bridge erecting machine is aligned with the bridge and piers to be erected, and the main beam is moved to a suitable position without manual insertion and removal of positioning pins, thereby improving the efficiency of bridge erection by workers; the guide beam is raised and lowered by the winch arranged on the upper side of the guide beam, and the operation of the guide beam is smoother through the retractable auxiliary top rod and auxiliary diagonal rod, thereby improving the stability of the bridge erecting machine.

[0027] 2. By setting a lifting cylinder on one side of the shaft sleeve mouth, the gantry legs bear the load at both ends of the main beam during longitudinal movement, thereby reducing the damage degree of the fastening bolts on the main beam. The setting structure of the lifting cylinder is simple, the failure rate is low, and the maintenance is convenient. By setting a hydraulic cylinder at the lower end of the articulated shaft, the articulated shaft is more stable when dragging the T-beam. The hydraulic cylinder is easy to operate, which improves the efficiency of bridge erection.

[0028] 3. The steel wire rope is pulled by the motor to make it expand and contract and tighten, thereby realizing the longitudinal movement of the beam transport plate. The bridge-erecting machine is easy to debug and can meet the construction error of the bridge pier distance. The capstan and connecting pillars set on one side of the articulated shaft can buffer the articulated shaft and the main beam during longitudinal movement, thereby improving the safety of the bridge-erecting machine during use and reducing the cost of the bridge-erecting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0031] Figure 2 It is a structural schematic diagram of the main beam and gantry legs of the present invention.

[0032] Figure 3 for Figure 1 Enlarged schematic diagram at point A in the middle.

[0033] In the figure: 1. Auxiliary diagonal rod; 2. Gantry support leg; 3. Support leg roller; 4. Main beam; 5. Shackle; 6. Circular chain; 7. Track; 8. Winch; 9. Wire rope; 10. Beam transport plate; 11. Auxiliary jack; 12. Hydraulic cylinder; 13. T-beam; 14. Lifting cylinder; 15. Traction wheel; 16. Hanging wheel; 17. Shaft sleeve mouth; 18. Articulated shaft; 19. Pin shaft hole; 20. Capstan seat; 21. Connecting pillar; 22. Fence; 23. Cover plate; 24. Guide beam. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-3 As shown, a matching structure of a bridge erecting machine support leg and a main beam includes a main beam 4, a gantry support leg 2 and a circulating chain 6;

[0036] A gantry leg 2 is vertically provided on one side of the main beam 4, and tracks 7 are symmetrically provided on the upper and lower sides of the main beam 4. Cover plates 23 are provided above the tracks 7, and the cover plates 23 are perpendicular to the gantry leg 2, and the cover plates 23 are fixedly connected to the gantry leg 2;

[0037] A plurality of leg rollers 3 are provided on the lower side of the cover plate 23, and the leg rollers 3 are movably connected to the cover plate 23. One side of the leg roller 3 is arranged in the track 7. Two auxiliary inclined rods 1 are provided on the upper side of the upper cover plate 23, and the auxiliary inclined rods 1 are arranged on both sides of the gantry legs 2;

[0038] A guide beam 24 is vertically arranged at the upper end of the gantry leg 2, and the top ends of the auxiliary diagonal rod 1 and the auxiliary top rod 11 are fixedly connected to the guide beam 24. A hanging wheel 16 is arranged at the upper end of the auxiliary diagonal rod 1 on the left side, and steel wire ropes 9 are hung on both sides of the hanging wheel 16. The steel wire ropes 9 are movably connected to the hanging wheel 16, and the lower end of the steel wire ropes 9 is fixedly connected to the beam transport plate 10. The steel wire ropes 9 are pulled by the motor to make the steel wire ropes 9 retract and tighten, thereby realizing the longitudinal movement of the beam transport plate 10. The bridge erecting machine equipment is easy to debug and can meet the construction error of the bridge pier distance.

[0039] A shaft sleeve opening 17 is provided at the lower end of the gantry leg 2, and an articulated shaft 18 is sleeved inside the shaft sleeve opening 17. A plurality of pin holes 19 are symmetrically provided on both sides of the articulated shaft 18. A connecting pillar 21 is provided on one side of the articulated shaft 18. A capstan 20 is provided on one side of the articulated shaft 18 and on the lower side of the main beam 4. Both ends of the connecting pillar 21 are sleeved in the capstan 20. The articulated shaft 18 and the main beam 4 are movably connected through the connecting pillar 21. Through the capstan 20 and the connecting pillar 21 provided on one side of the articulated shaft 18, the articulated shaft 18 and the main beam 4 are buffered during longitudinal movement, thereby improving the safety of the bridge erecting machine during use and reducing the cost of the bridge erecting machine.

[0040] A traction wheel 15 is provided on the upper side of the main beam 4, and an endless chain 6 is sleeved on the traction wheel 15. The endless chain 6 is arranged parallel to the upper side of the main beam 4. A shackle 5 is provided on one side of the endless chain 6. The shackle 5 is fixedly connected to the upper cover plate 23. The multifunctional endless chain 6 is driven by the traction wheel 15 of the bridge erecting machine, and the outrigger roller 3 under the cover plate 23 is dragged to roll on the track 7 through the shackle 5 connected on one side. Therefore, when the longitudinal span of the bridge is changed, the main beam 4 of the bridge erecting machine is aligned with the bridge and piers to be erected, and the main beam 4 is moved to a suitable position without manually inserting and removing the positioning pins, thereby improving the efficiency of the staff in erecting the bridge.

[0041] A winch 8 is provided on the upper side of the guide beam 24 , and a fence 22 is provided on one side of the winch 8 .

[0042] Among them, an auxiliary top rod 11 is provided on one side of the auxiliary diagonal rod 1 , and the auxiliary diagonal rod 1 and the auxiliary top rod 11 are both movably connected to the cover plate 23 , and the auxiliary top rod 11 is perpendicular to the main beam 4 .

[0043] Among them, the auxiliary diagonal rod 1 and the auxiliary top rod 11 are both retractable rods, and the retractable parts of the auxiliary diagonal rod 1 and the auxiliary top rod 11 are fixed by bolts. The lifting and lowering of the guide beam 24 is realized by the winch 8 arranged on the upper side of the guide beam 24. Through the retractable auxiliary top rod 11 and the auxiliary diagonal rod 1, the operation of the guide beam 24 is smoother, thereby improving the stability of the bridge-building machine.

[0044] Among them, a lifting cylinder 14 is vertically provided on one side of the shaft sleeve opening 17, and the lifting cylinder 14 is fixedly connected to the shaft sleeve opening 17. The lifting cylinder 14 arranged on one side of the shaft sleeve opening 17 allows the gantry leg 2 to bear the load at both ends of the main beam 4 during longitudinal movement, thereby reducing the damage degree of the fastening bolts on the main beam 4. The setting structure of the lifting cylinder 14 is simple, the failure rate is low, and the maintenance is convenient.

[0045] Among them, a T-beam 13 is provided on the lower side of the articulated shaft 18, and a hydraulic cylinder 12 is provided on one side of the lower end of the articulated shaft 18. The hydraulic cylinder 12 provided at the lower end of the articulated shaft 18 makes the articulated shaft 18 more stable when dragging the T-beam 13. The hydraulic cylinder 12 is easy to operate, which improves the efficiency of bridge erection.

[0046] The specific use steps of the coordination method of the bridge erecting machine variable span longitudinal movement of the present invention include:

[0047] Step 1: Check the fastening condition of each fastening bolt between the main beam 4 and the gantry leg 2 of the bridge erecting machine;

[0048] Step 2: Release the longitudinal movement constraints of the sleeve opening 17 and the cover plate 23 on the main beam 4 of the bridge erecting machine;

[0049] Step 3: Start the traction wheel 15 to operate the circulating chain 6, drag the outrigger roller 3 to roll on the track 7, and align the main beam 4 with the bridge and piers to be built;

[0050] Step 4: Start the winch 8 to lift the guide beam 24, start the motor to pull the wire rope 9 to realize the longitudinal movement of the beam transport plate 10, open the jacking cylinder 14 of the gantry leg 2, wait for the beam transport plate 10 to be transported to the top of the beam, and stop the longitudinal movement;

[0051] Step 5: Start the hydraulic cylinder 12 of the articulated shaft 18 to constrain the longitudinal movement of the articulated shaft 18 and the T-beam 13.

[0052] When the present invention is in use, the staff starts the traction wheel 15 of the bridge-building machine to drive the multifunctional circulating chain 6, and drags the leg roller 3 under the cover plate 23 to roll on the track 7 through the shackle 5 connected on one side, so that when the longitudinal span of the bridge is changed, the main beam 4 of the bridge-building machine is aligned with the bridge and piers to be built, and the main beam 4 is moved to a suitable position without manually inserting and removing the positioning pins, thereby improving the efficiency of the staff in building the bridge; the guide beam 24 is lifted and lowered by the winch 8 arranged on the upper side of the guide beam 24, and the operation of the guide beam 24 is more stable by the retractable auxiliary top rod 11 and the auxiliary diagonal rod 1, thereby improving the stability of the bridge-building machine, and the steel wire rope 9 is pulled by the motor to make the steel wire rope 9 retract and tighten, thereby realizing the longitudinal movement of the beam transport plate 10. The bridge-building machine equipment is easy to debug and can meet the construction error of the bridge pier distance.

[0053] By setting the lifting cylinder 14 on one side of the shaft sleeve opening 17, the gantry leg 2 bears the load at both ends of the main beam 4 during longitudinal movement, thereby reducing the damage degree of the fastening bolts on the main beam 4. The setting structure of the lifting cylinder 14 is simple, the failure rate is low, and the maintenance is convenient; by setting the hydraulic cylinder 12 at the lower end of the articulated shaft 18, the articulated shaft 18 is more stable when dragging the T-beam 13. The hydraulic cylinder 12 is easy to operate, which improves the efficiency of bridge erection.

[0054] By means of the capstan 20 and the connecting support 21 arranged on one side of the articulated shaft 18, the articulated shaft 18 and the main beam 4 are buffered during longitudinal movement, thereby improving the safety of the bridge-building machine during use and reducing the cost of the bridge-building machine.

[0055] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A matching structure between a bridge erecting machine support leg and a main beam, characterized in that: It includes a main beam (4), gantry legs (2) and a circulating chain (6); A gantry leg (2) is vertically provided on one side of the main beam (4), tracks (7) are symmetrically provided on the upper and lower sides of the main beam (4), and a cover plate (23) is provided above each of the tracks (7). The cover plate (23) is perpendicular to the gantry leg (2), and the cover plate (23) is fixedly connected to the gantry leg (2); A plurality of leg rollers (3) are provided on the lower side of the cover plate (23), the leg rollers (3) are movably connected to the cover plate (23), one side of the leg roller (3) is arranged in the track (7), and two auxiliary inclined rods (1) are provided on the upper side of the upper cover plate (23), the auxiliary inclined rods (1) are arranged on both sides of the gantry legs (2); A guide beam (24) is vertically provided at the upper end of the gantry support leg (2), the top ends of the auxiliary inclined rod (1) and the auxiliary top rod (11) are fixedly connected to the guide beam (24), a hanging wheel (16) is provided at the upper end of the auxiliary inclined rod (1) on the left side, steel wire ropes (9) are hung on both sides of the hanging wheel (16), the steel wire ropes (9) are movably connected to the hanging wheel (16), and the lower end of the steel wire rope (9) is fixedly connected to a beam transport plate (10); The lower end of the gantry leg (2) is provided with a shaft sleeve opening (17), a hinge shaft (18) is sleeved inside the shaft sleeve opening (17), a plurality of pin shaft holes (19) are symmetrically provided on both sides of the hinge shaft (18), a connecting pillar (21) is provided on one side of the hinge shaft (18), a capstan seat (20) is provided on one side of the hinge shaft (18) and a lower side of the main beam (4), both ends of the connecting pillar (21) are sleeved in the capstan seat (20), and the hinge shaft (18) and the main beam (4) are movably connected via the connecting pillar (21); A traction wheel (15) is provided on the upper side of the main beam (4), a circulating chain (6) is sleeved on the traction wheel (15), the circulating chain (6) is arranged parallel to the upper side of the main beam (4), a shackle (5) is provided on one side of the circulating chain (6), and the shackle (5) is fixedly connected to the upper cover plate (23); An auxiliary push rod (11) is provided on one side of the auxiliary diagonal rod (1), the auxiliary diagonal rod (1) and the auxiliary push rod (11) are both movably connected to the cover plate (23), and the auxiliary push rod (11) is perpendicular to the main beam (4); The auxiliary diagonal rod (1) and the auxiliary top rod (11) are both telescopic rods, and the telescopic parts of the auxiliary diagonal rod (1) and the auxiliary top rod (11) are fixed by bolts.

2. The matching structure of the bridge erecting machine legs and the main beam according to claim 1 is characterized in that: A hoist (8) is provided on the upper side of the guide beam (24), and a fence (22) is provided on one side of the hoist (8).

3. The matching structure of the bridge erecting machine legs and the main beam according to claim 2 is characterized in that: A lifting oil cylinder (14) is vertically provided on one side of the shaft sleeve opening (17), and the lifting oil cylinder (14) is fixedly connected to the shaft sleeve opening (17).

4. The matching structure of the bridge erecting machine legs and the main beam according to claim 3 is characterized in that: A T-beam (13) is provided on the lower side of the articulated shaft (18), and a hydraulic cylinder (12) is provided on one side of the lower end of the articulated shaft (18).

5. The matching structure of the bridge erecting machine legs and the main beam according to claim 4 is characterized in that: The coordination method of the variable span longitudinal movement of the bridge erecting machine specifically comprises the following steps: Step 1: Check the tightening condition of each fastening bolt between the main beam (4) of the bridge erecting machine and the gantry support leg (2); Step 2: releasing the longitudinal movement constraints of the shaft sleeve opening (17) and the cover plate (23) on the main beam (4) of the bridge erecting machine; Step 3: Start the traction wheel (15) to operate the circulating chain (6), drag the outrigger roller (3) to roll on the track (7), and align the main beam (4) with the bridge and piers to be built; Step 4: Start the winch (8) to achieve the lifting and lowering of the guide beam (24), start the motor to pull the wire rope (9) to achieve the longitudinal movement of the beam transport plate (10), open the jacking cylinder (14) of the gantry support leg (2), wait for the beam transport plate (10) to be transported to the top of the beam, and stop the longitudinal movement; Step 5: Start the hydraulic cylinder (12) of the articulated shaft (18) to constrain the longitudinal movement of the articulated shaft (18) and the T-beam (13).

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