CN214359794U

CN214359794U - Steel hinge structure for crane supporting leg

Info

Publication number: CN214359794U
Application number: CN202022850851.9U
Authority: CN
Inventors: 施向华; 朱红兴
Original assignee: Joint Construction Carter Wuhan Heavy Engineering Technology Co ltd
Current assignee: Joint Construction Carter Wuhan Heavy Engineering Technology Co ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-10-08
Anticipated expiration: 2030-12-02

Abstract

The utility model relates to the technical field of cranes, in particular to a steel hinge structure for crane supporting legs, which comprises an upper swing frame, a lower swing frame, a main pin shaft and two auxiliary pin shafts, wherein the upper swing frame and the lower swing frame are both provided with concentric main holes with the same diameter, the main holes are internally inserted with the main pin shafts to connect the upper swing frame and the lower swing frame together, and the upper swing frame and the lower swing frame can rotate relative to the main pin shafts; the two sides of the upper swing frame are respectively provided with a first auxiliary hole and a second auxiliary hole which have the same aperture, the lower swing frame is provided with a third auxiliary hole and a fourth auxiliary hole which are respectively concentric with the first auxiliary hole and the second auxiliary hole, and the auxiliary pin shaft can move in the first auxiliary hole and the second auxiliary hole. The utility model discloses can remove the external force that the in-process produced the landing leg with the girder, convert internal force balance to through this steel hinge mechanism and fall, can effectively eliminate the risk of toppling around the crane landing leg produces because of exogenic action.

Description

Steel hinge structure for crane supporting leg

Technical Field

The utility model relates to a hoist technical field specifically is a steel hinge structure for hoist landing leg.

Background

The portal crane is mainly used for hoisting various engineering heavy objects, and the bridge girder erection machine is mainly used for erecting elevated highways, railways, bridges and other engineering. The supporting legs are main supporting mechanisms of the equipment and are mainly supported by the self gravity of the main beam and objects above the main beam and the supporting force of the ground. When the main beam moves, friction force is generated between the main beam and the supporting legs, the supporting legs are subjected to traction force in the moving direction of the main beam to enable stress in the same direction as the moving direction of the main beam to be generated in the supporting legs, and the supporting legs have risks of deformation and toppling in the moving direction. To this end, we propose a steel hinge structure for crane legs.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a steel hinge structure for hoist landing leg possesses the internal stress that the rigidity hinge leg of release warp, reduces and emptys the risk and increase the advantage of landing leg stability, when having solved among the prior art girder and having removed, produces in the landing leg and send rigidity hinge leg to produce the problem of warping and empting with moving direction's syntropy stress.

In order to achieve the above object, the utility model provides a following technical scheme: a steel hinge structure for crane supporting legs comprises an upper swing frame, a lower swing frame, a main pin shaft and two auxiliary pin shafts, wherein main holes which are concentric and have the same aperture are formed in the upper swing frame and the lower swing frame;

go up the both sides of rocker and be provided with the same first hole and the hole is assisted to the second in aperture respectively, be provided with two on the rocker down and assist hole and fourth with first hole and the second is assisted to concentric third of assisting hole and second respectively and assist the hole, and the aperture that hole and fourth were assisted to the third is the same and is less than the first hole of assisting hole and the hole is assisted to the second, and an auxiliary pin axle inserts in first hole and the hole is assisted to the third, and another auxiliary pin axle inserts in hole and the hole is assisted to the fourth is assisted to the second, auxiliary pin axle can assist the hole activity in first hole and the second of assisting.

Preferably, the swing frame further comprises a first bolt, and the first bolt is sequentially connected with the first elastic pad, the first flat pad, the first clamping plate and the lower swing frame at the main hole.

Preferably, the device also comprises a second bolt, and the second bolt is sequentially connected with a second elastic pad, a second flat pad, a second clamping plate and a lower swing frame at the third auxiliary hole and the fourth auxiliary hole.

Compared with the prior art, the beneficial effects of the utility model are as follows:

through using on the bearing landing leg of bridging machine, can move the external force that the in-process produced the landing leg with the girder, convert internal force balance through this steel hinge mechanism and fall, utilize the theory of operation of this steel hinge mechanism, can effectively eliminate the risk of toppling around the crane landing leg produces because of the external force effect. Greatly improving the safety of the bridge girder erection machine in the using process. The problem of among the prior art main beam when removing, produce in the landing leg and the syntropy stress of moving direction causes rigidity hinge leg to produce deformation and topple over is solved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an assembly view of the upper and lower swing frames of the present invention;

FIG. 3 is an assembly view of the main pin shaft of the present invention;

FIG. 4 is an assembly view of the auxiliary pin shaft of the present invention;

FIG. 5 is a cross-sectional view of the auxiliary pin of the present invention;

fig. 6 is a schematic diagram of the use of the present invention.

In the figure: 1. an upper swing frame; 2. a lower swing frame; 3. a king pin shaft; 4. a first clamping plate; 5. a first bolt; 6. A first spring washer; 7. a first flat pad; 8. an auxiliary pin shaft; 9. a second clamping plate; 10. a second bolt; 11. A second spring pad; 12. a second flat pad; 13. a main hole; 14. a first auxiliary hole; 15. a second auxiliary hole; 16. A third auxiliary hole; 17. and a fourth auxiliary hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 and 2, a steel hinge structure for crane supporting legs comprises an upper swing frame 1, a lower swing frame 2, a main pin shaft 3 and two auxiliary pin shafts 8, wherein main holes 13 which are concentric and have the same aperture are formed in the upper swing frame 1 and the lower swing frame 2, the main pin shaft 3 is inserted into the main holes 13 to connect the upper swing frame 1 and the lower swing frame 2 together, and the upper swing frame 1 and the lower swing frame 2 can rotate relative to the main pin shaft 3;

the two sides of the upper swing frame 1 are respectively provided with a first auxiliary hole 14 and a second auxiliary hole 15 which have the same aperture, the lower swing frame 2 is provided with a third auxiliary hole 16 and a fourth auxiliary hole 17 which are respectively concentric with the first auxiliary hole 14 and the second auxiliary hole 15, the aperture of the third auxiliary hole 16 and the aperture of the fourth auxiliary hole 17 are the same and smaller than the aperture of the first auxiliary hole 14 and the aperture of the second auxiliary hole 15, one auxiliary pin shaft 8 is inserted into the first auxiliary hole 14 and the third auxiliary hole 16, the other auxiliary pin shaft 8 is inserted into the second auxiliary hole 15 and the fourth auxiliary hole 17, and the auxiliary pin shaft 8 can move in the first auxiliary hole 14 and the second auxiliary hole 15. The steel hinge mechanism has the stability characteristic of a rigid leg, and can effectively limit the position of the auxiliary pin shaft 8 in an abnormal deformation state. As shown in fig. 5.

The steel hinge mechanism can also reduce the downwarping radian generated by the long-time use or suspension of the main beam of the bridge girder erection machine due to the self gravity, and prolong the service life of equipment.

As shown in fig. 3, the swing frame further comprises a first bolt 5, and the first bolt 5 is sequentially connected with the first elastic pad 6, the first flat pad 7, the first clamping plate 4 and the lower swing frame 2 at the main hole 13. Through having set up the bullet pad, the bullet pad can give bolt elasticity, supports tight bolt, makes it be difficult for droing, through setting up flat pad, can increase bolt and pendulum frame contact surface.

As shown in fig. 4 and 5, the device further comprises a second bolt 10, wherein the second bolt 10 is sequentially connected with a second elastic pad 11, a second flat pad 12, a second clamping plate 9 and the lower swing frame 2 at a third auxiliary hole 16 and a fourth auxiliary hole 17. Through having set up the bullet pad, the bullet pad can give bolt elasticity, supports tight bolt, makes it be difficult for droing, through setting up flat pad, can increase bolt and pendulum frame contact surface.

As shown in fig. 6, when the main beam moves, friction force is generated between the main beam and the upper swing frame 1 due to the action of the gravity G of the main beam, so that the upper swing frame 1 rotates around the main pin shaft 3. The auxiliary pin shaft 8 is fixed at the third auxiliary hole 16 and the fourth auxiliary hole 17 of the lower swing frame 2, the auxiliary pin shaft 8 is under the upper tension T of the second auxiliary hole 15 of the upper swing frame 1, and the other auxiliary pin shaft 8 is under the lower pressure P of the third auxiliary hole 16 of the upper swing frame 1, so that a lever effect is formed. The tension T and the pressure P are equal in magnitude and opposite in direction, parallel acting forces are mutually offset, internal stress of the supporting leg is released, and a balance effect is achieved. The main beam is downwarped due to the gravity G under the normal state, and the downwarped bending radian of the main beam can be reduced through the process. The arrows in fig. 6 indicate the moving direction of the main beam, G is gravity, P is pressure, and T is tension.

The utility model discloses an use on the bearing landing leg of bridging machine, can remove the external force that the in-process produced the landing leg with the girder, convert internal force balance through this steel hinge mechanism and fall, utilize this steel hinge mechanism's theory of operation, can effectively eliminate the hoist landing leg and topple the risk around because of the exogenic action produces. Greatly improving the safety of the bridge girder erection machine in the using process. The design structure is simple, the cost is low, and the safety and the reliability are realized. The mechanism can be used on the bearing supporting legs of a portal crane and various bridge erecting machines, and is flexible to disassemble and assemble.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a steel hinge structure for hoist landing leg, includes rocker (1), lower rocker (2), swizzle axle (3) and two supplementary round pin axles (8), its characterized in that: the upper swing frame (1) and the lower swing frame (2) are both provided with main holes (13) which are concentric and have the same aperture, main pin shafts (3) are inserted into the main holes (13) to connect the upper swing frame (1) and the lower swing frame (2) together, and the upper swing frame (1) and the lower swing frame (2) can rotate relative to the main pin shafts (3);

go up the both sides of rocker (1) and be provided with the same first hole (14) of assisting of aperture and hole (15) are assisted to the second respectively, be provided with two on rocker (2) down and assist hole (16) and fourth and assist hole (17) with first hole (14) of assisting and hole (15) concentric third respectively with the second, and the aperture of hole (16) is assisted with the fourth hole (17) the same and be less than the aperture of first hole (14) of assisting and hole (15) is assisted to the second, and during hole (16) are assisted to first assisting hole (14) and third is assisted in inserting to an auxiliary pin axle (8), during hole (15) are assisted with the fourth to another auxiliary pin axle (8) inserts second, auxiliary pin axle (8) can be in first hole (14) of assisting and the hole (15) are assisted with the second activity.

2. A steel hinge construction for a crane leg according to claim 1, characterized in that: the elastic support is characterized by further comprising a first bolt (5), wherein the first bolt (5) is sequentially connected with a first elastic pad (6), a first flat pad (7), a first clamping plate (4) and a lower swing frame (2) at the position of the main hole (13).

3. A steel hinge construction for a crane leg according to claim 1, characterized in that: the spring support is characterized by further comprising a second bolt (10), wherein the second bolt (10) is sequentially connected with a second spring pad (11), a second flat pad (12), a second clamping plate (9) and a lower swing frame (2) at a third auxiliary hole (16) and a fourth auxiliary hole (17).