CN204281029U - A kind of stressed clear and definite and adjustable operation platform suspender of suspension centre - Google Patents

Abstract

The utility model is a construction platform spreader with clear force and adjustable lifting point, which belongs to the field of hoisting machinery. The design consists of a beam, a longitudinal beam, an upper sling, a lower sling and a shackle. The two-section beam and the supplementary adjustment beam between the corresponding inner ends, the longitudinal beam is composed of two spaced beams and the supplementary adjustment longitudinal beam between the corresponding inner ends, and the two ends of the beam are respectively equipped with an upper suspension shaft and a lower suspension shaft. There is a shaft hole at both ends of the longitudinal beam; a pair of beams are arranged in parallel, the lower suspension shafts at both ends of the pair of beams are respectively hinged with the shaft holes at both ends of the pair of longitudinal beams to form a rectangular beam frame, and the upper sling bypasses the rectangular beam The four upper hanging shafts of the frame are connected to the crane hook, and the lower sling bypasses the four lower hanging shafts to connect with the shackles respectively, and each shackle is correspondingly connected with the lifting lugs of the construction platform. During the lifting operation, the beam or longitudinal beam is mainly Under the force in the axial direction, the force of the spreader is clear, the working state is stable and reliable, and the stability and safety of the crane are improved.

Description

A construction platform spreader with clear force and adjustable lifting point

technical field

The utility model relates to a construction platform spreader with clear force and adjustable lifting points, which belongs to the field of hoisting machinery, and in particular relates to offshore hoisting construction equipment.

Background technique

With the continuous development of science and technology and the continuous strengthening of the design capabilities of crane companies, large-scale jib cranes have become the main force in offshore engineering construction. To complete the construction of the project, the crane needs a set of special spreader and rigging to connect the crane hook and the object to be hoisted. At present, the structure of the widely used spreader is relatively complicated, and the spreader components generally have to bear axial stress, bending stress, shear stress, etc., and the force of the spreader often depends on the connection between the lifted object and the spreader With the diversification of the hoisting size of the hoisted object, the force of the spreader system is also different. Therefore, it is necessary to develop a set of construction platform spreaders with clear force and adjustable lifting points.

Utility model content

The purpose of the utility model is to provide a construction platform spreader with clear force and adjustable lifting point, so as to simplify the complex structure and stress of the current spreader system, and improve the safety and stability of the spreader system.

The utility model is a construction platform spreader with clear stress and adjustable lifting point, which is composed of a beam, a longitudinal beam, an upper sling, a lower sling and a shackle. The beam is composed of two sections of beams arranged at intervals and their corresponding inner ends The supplementary adjustment beams between them are composed of the supplementary adjustment beams. The longitudinal beams are composed of two interval beams and the supplementary adjustment longitudinal beams between the corresponding inner ends. One shaft hole; a pair of beams are arranged in parallel, the lower hanging shafts at both ends of the pair of beams are respectively hinged with the shaft holes at both ends of a pair of longitudinal beams to form a rectangular beam frame, and the upper sling bypasses the four upper hanging shafts of the rectangular beam frame and hangs with the crane. The lower sling bypasses the four lower hanging shafts and connects with the shackles respectively, and each shackle is correspondingly connected with the lifting lugs of the construction platform.

The distance between the two sections of beams forming the beam is controlled and regulated by a hydraulic oil cylinder pre-connected therebetween.

The inner ends of the two sections of beams forming the beam are connected with the end of the supplementary adjusting beam therebetween through a flange bolt mechanism.

The distance between the two sections of beams forming the longitudinal beam is controlled and regulated by a hydraulic oil cylinder pre-connected therebetween.

The inner ends of the two sections of beams forming the longitudinal beams are connected with the ends of the supplementary adjusting beams therebetween through a flange bolt mechanism.

The length of the beam is the same as the distance between the corresponding transverse lifting lugs of the construction platform.

The length of the longitudinal beam is the same as the distance between the corresponding longitudinal lifting lugs of the construction platform.

The utility model is composed of a pair of parallel beams and a pair of parallel longitudinal beams hinged to form a rectangular beam frame. The beams and the two sections of the longitudinal beams are controlled and adjusted to the two horizontal lifting lugs corresponding to the construction platform and the two beams respectively through the oil cylinders in between. The distance between the two longitudinal lifting lug plates is the same, and then according to the distance between the two sections of the beam and the longitudinal beam, a supplementary adjustment beam is respectively set, and the two sections of the beam and the longitudinal beam are respectively adjusted by the supplementary adjustment beam. The connection is fixed so that the lengths of the integrated beam and longitudinal beam formed by the connection are respectively the same as the distances between the two horizontal lifting lugs and the two longitudinal lifting lugs corresponding to the construction platform. Therefore, when hoisting the construction platform, the lower sling has a vertical downward pull on the entire sling, and the pull on the upper sling to the sling can be decomposed into three components: the vertical upward component, and the beam axially inward. The component force of the longitudinal beam is the component force in the axial direction. From the balance of force, it can be seen that the pulling force of the lower sling on the entire sling is equal in magnitude and opposite in direction to the vertical upward component of the upper sling on the sling. Therefore, during the lifting operation, the beam or longitudinal beam is mainly subjected to the force in the axial direction, the force of the spreader is clear, the working state is stable and reliable, and the stability and safety of the crane are improved.

Description of drawings

Fig. 1 front view of the structure of the utility model;

Fig. 2 left view of the structure of the utility model;

Fig. 3 is the top view of the main structure of the utility model;

Fig. 4 front view of the beam of the utility model;

Figure 5 is the front view of the longitudinal beam of the utility model;

Fig. 6 is a schematic diagram of the utility model for measuring the lateral spacing of the lifting lugs of the construction platform;

Figure 7 is a schematic diagram of the elongation of the beam of the utility model;

Fig. 8 is a schematic diagram of the crossbeam of the utility model after adding an intermediate beam;

Fig. 9 is a schematic diagram of the longitudinal beam of the utility model after the intermediate beam is added;

Figure 10 is the front view of the utility model when it is working;

Figure 11 is the left side view of the utility model when it is working.

Detailed ways

Now further illustrate how the utility model is implemented in conjunction with the accompanying drawings:

The utility model) a construction platform spreader with clear force and adjustable lifting point, which is composed of a beam, a longitudinal beam, an upper sling, a lower sling and a shackle. The beam B is composed of two sections of beams P and Q arranged at intervals. and the supplementary adjustment beam I between the corresponding inner ends, the longitudinal beam C is composed of two spaced beams U, V and the supplementary adjustment longitudinal beam W between the corresponding inner ends, and the two ends of the connected beam B are respectively set There are an upper hanging shaft M and a lower hanging shaft N, and a shaft hole is opened at both ends of the connected longitudinal beams; a pair of beams B are arranged in parallel, and the lower hanging shafts N at both ends of the pair of beams B are respectively connected to the two ends of a pair of longitudinal beams C. The shaft holes are hinged to form a rectangular beam frame. The upper sling A bypasses the four upper hanging shafts M of the rectangular beam frame to connect with the crane hook F, and the lower sling D bypasses the four lower hanging shafts N to connect with the shackle E respectively. The buckle E is correspondingly connected with the lifting lug J of the construction platform G.

The distance between the two sections of beams P and Q constituting the beam B is controlled and adjusted through the hydraulic cylinder H pre-connected therebetween.

The inner ends of the two sections of beams P and Q constituting the beam B are connected with the end of the supplementary adjusting beam I therebetween through a flange bolt mechanism.

The distance between the two sections of beams U and V constituting the longitudinal beam C is controlled and regulated by a hydraulic cylinder K pre-connected therebetween.

The inner ends of the two sections of beams U and V constituting the longitudinal beam C are connected with the end of the supplementary adjusting longitudinal beam W therebetween through a flange bolt mechanism.

The length of the beam B is the same as the distance between the two transverse lifting lugs corresponding to the construction platform G.

The length of the longitudinal beam C is the same as the distance between the two longitudinal lifting lugs corresponding to the construction platform.

When the utility model is working, the length of the crossbeam B has been adjusted to be the same as the distance between the two horizontal lug plates of the suspended object G, and the length of the longitudinal beam C has been adjusted to be the same as the distance between the two vertical lug plates of the suspended object G. Therefore, when hoisting, the lower sling D has a vertical downward pulling force on the whole crane, and the pulling force of the upper sling A on the sling can be decomposed into three components: the vertical upward component, and the beam B axially inward The component force of the longitudinal beam C-axis inwards. From the force balance, it can be seen that the pulling force of the lower sling D on the entire spreader is equal to the vertical component force of the upper sling A on the spreader, but opposite in direction, and the longitudinal beam and crossbeam are mainly subjected to axial force. Therefore, during the lifting operation, the force of the spreader is clear, and the working state is stable and reliable, which improves the stability and safety of the crane during lifting.

The steps when the utility model realizes lifting objects are as follows:

1. Measure the distance L1 between the two transverse lifting lugs J of the construction platform G. Measure the distance L2 between the two longitudinal lifting lugs J of the lifting object. See attached drawing 7.

2. Loosen the butt joint between beam P and beam Q in beam B, control hydraulic cylinder H to adjust the distance between the two lower suspension shafts N of beam B to L1, and measure the docking distance S1 between beam P and beam Q. Loosen the butt joint between the two sections of beam U and beam V in the longitudinal beam C, control the hydraulic cylinder K to adjust the distance between the two shaft holes of the longitudinal beam C to L2, and measure the butt joint distance S2 between the beam U and the beam V.

3. Connect a supplementary adjustment beam I whose length is S1 and whose two ends can be connected to beam P and beam Q respectively, to connect beam P and beam Q to make the connection of the whole beam stable and reliable. A supplementary adjustment beam W whose length is S2 and whose two ends can respectively be connected to beam U and beam V is connected to beam U and beam V, so that the connection of the whole longitudinal beam is stable and reliable. The longitudinal beam C is connected to the beam B through the holes at both ends through the pin shaft N, and the two beams B and the two longitudinal beams C form a whole.

4. The upper sling A bypasses the upper suspension shaft M and connects with the hook F, the lower sling D bypasses the lower suspension shaft N and connects with the shackle E, and the shackle E connects with the lifting lug J of the object G to be hoisted. The preparatory work before lifting has just been completed.

5. When the crane is hoisting, the hook F is lifted up, the upper sling A and the lower sling D are tightened sequentially, and then the suspended object G is lifted. After the suspended object G is lifted, the force on the entire sling system is simple and clear.

Claims (7)

1. the stressed clear and definite and adjustable operation platform suspender of suspension centre, be made up of crossbeam, longeron, top hoist cable, bottom hoist cable and shackle, it is characterized in that, crossbeam is made up of the supplementary adjustment crossbeam between spaced two sections of beams and corresponding the inner thereof, longeron is made up of the supplementary adjustment longeron between two sections of beams at interval and corresponding the inner thereof, crossbeam two ends are respectively equipped with hanging axis and lower hanging axis, and longeron two ends have an axis hole; Pair of beams be arranged in parallel, this to bottom, crossbeam two ends hanging axis respectively with a pair longeron two ends axis hole hinged formation rectangle roof beam structure, four upper hanging axises that rectangle roof beam structure walked around by top hoist cable are connected with crane hook, bottom hoist cable is walked around four lower hanging axises and is connected with shackle respectively, each shackle and operation platform play that shackle plate is corresponding to be connected.

2. the stressed clear and definite and adjustable operation platform suspender of suspension centre of one according to claim 1, is characterized in that, the spacing distance of two sections of beams of composition crossbeam is by the hydraulic ram control and regulation of pre-connection therebetween.

3. the stressed clear and definite and adjustable operation platform suspender of suspension centre of one according to claim 1, it is characterized in that, the inner of two sections of beams of composition crossbeam is connected by bolt with flange mechanism with supplementary adjustment beam-end therebetween.

4. the stressed clear and definite and adjustable operation platform suspender of suspension centre of one according to claim 1, is characterized in that, the spacing distance of two sections of beams of composition longeron is by the hydraulic ram control and regulation of pre-connection therebetween.

5. the stressed clear and definite and adjustable operation platform suspender of suspension centre of one according to claim 1, it is characterized in that, the inner of two sections of beams of composition longeron is connected by bolt with flange mechanism with supplementary adjustment beam-end therebetween.

6. the stressed clear and definite and adjustable operation platform suspender of suspension centre of one according to claim 1, is characterized in that, the distance that the length of the crossbeam transverse direction corresponding with operation platform rises between shackle plate is identical.

7. the stressed clear and definite and adjustable operation platform suspender of suspension centre of one according to claim 1, is characterized in that, the distance that the length of the longeron longitudinal direction corresponding with operation platform rises between shackle plate is identical.