CN115402926A - Gantry Crane Jib Supporting Device and Jib and Trunk Bridge Assembly and Connection Method - Google Patents

Abstract

The application discloses a portal crane jib support device, and a method for using the device to assemble and connect the jib frame and the elephant trunk beam. The support device includes: a beam mechanism; support seats arranged on the side walls at both ends of the beam mechanism; movable with the support seat The connected telescopic outriggers; the cross bar between the telescopic outriggers on the same side wall of the beam mechanism; the connecting rod assembly between the telescopic outriggers on the side walls at both ends of the beam mechanism, and the connecting rod assembly is detachably connected After disassembly, the connecting rod assembly is placed on the side of the telescopic outrigger, so that the telescopic outriggers on both sides of the beam mechanism can be rotated and folded around the support seat; on the connecting rod assembly, it is used to adjust the support angle of the boom combined with the telescopic outrigger screw mechanism. The jib support device of the portal crane disclosed in the present application can adjust the support angle and height of the jib to ensure stable and reliable support when the jib is assembled. Improve the production efficiency of rack assembly, and reduce safety hazards and additional costs.

Description

Gantry Crane Jib Supporting Device and Jib and Trunk Bridge Assembly and Connection Method

technical field

The present application relates to the technical field of portal crane manufacturing, in particular to a portal crane jib support device and a method for using the device to assemble and connect the portal crane jib and the trunk bridge.

Background technique

At present, there are mainly two ways to assemble and transport the whole machine of the portal crane with four-link structure: the first one is that the whole machine is assembled and debugged in the factory, and then the whole machine is transported to the place of use by a special ship; the second is Each component is transported to the place of use separately, and then assembled into a complete machine on site and debugged. The second method has relatively low environmental requirements for the site and location of the crane manufacturing unit, and is more adaptable and flexible. Although the on-site assembly will take up a certain amount of on-site time, the overall production cycle of the whole machine is not obvious. The difference is only the difference between the crane factory and the use site, so this method is currently widely used.

Based on this, when the traditional four-link structure gantry crane jib and elephant trunk beam are assembled, mobile hoisting equipment such as truck cranes or gantry cranes are used to lift them separately for assembly and connection, or a large-size "n" shape is used to assemble them. The horse stool is directly supported under the arm frame to be assembled and connected with the elephant trunk bridge. However, there are many deficiencies in this method: 1. The support angle and support height cannot be adjusted by the horse stool, which cannot ensure the stable and reliable support of booms of different sizes, which increases the risk of sliding and potential safety hazards, and poor adaptability to working conditions; 2. The horse stool The external dimensions are large, especially when the user installs on site, transportation and storage take up space, are inconvenient, and increase additional costs; 3. The horse stool is directly and rigidly supported under the arm frame, and the position of the fulcrum has no accurate range. When assembling with the elephant trunk bridge, the arm The frame is easy to slide on the horse stool or the horse stool is easy to fall, which poses a big safety hazard. At the same time, it is easy to damage the anti-corrosion coating of the arm frame, which affects the service life; 4. The arm frame and the elephant trunk hang in the air. Positive, affect the assembly efficiency, and there is a big safety hazard.

Therefore, how to provide a jib support device for a portal crane, and a method for assembling and connecting the jib and the elephant trunk using this device, which can adjust the support angle and height of the jib, and ensure stable and reliable support when the jib is assembled. It has good environmental adaptability and convenient transportation and storage, can improve the production efficiency of boom assembly and connection, and reduce safety hazards and additional costs, which have become technical problems to be solved urgently by those skilled in the art.

Contents of the invention

In order to solve the above-mentioned technical problems, the application provides a jib support device for a portal crane, and a method for assembling and connecting the jib and the elephant trunk using this device, which can adjust the support angle and height of the jib to ensure that the jib is assembled properly. Stable and reliable support, good adaptability to working conditions. When in use, the connecting rod assembly is installed between the two telescopic outriggers to improve the overall stability. The storage is convenient, which can improve the production efficiency of the jib assembly and connection, and reduce safety hazards and additional costs.

A kind of technical scheme that this application provides is as follows:

The present application provides a support device for a boom of a portal crane, comprising: a crossbeam mechanism abutting against the boom of the portal crane for supporting the boom; support seats arranged on the side walls at both ends of the crossbeam mechanism; One end is movably connected with the support base, and the other end touches the telescopic outrigger on the ground. The telescopic outrigger is used to carry the weight of the beam mechanism and the boom, and adjust the support height of the boom through telescopic adjustment; it is set on the The cross bar between the telescopic legs of the same side wall of the cross beam mechanism; the connecting rod assembly arranged between the telescopic legs of the two side walls of the cross beam mechanism, the connecting rod assembly and the cross bar It is used to connect the telescopic outriggers into a whole; the connecting rod assembly can be detachably connected, and the disassembled connecting rod assembly is placed on the side of the telescopic outrigger, so that the telescopic outriggers on both sides of the beam mechanism can support The seat is rotated and folded; it is arranged on the connecting rod assembly and is a screw mechanism for adjusting the length of the connecting rod assembly. The screw mechanism is used to combine with the telescopic legs to adjust the support angle of the boom.

Further, in a preferred manner of the present invention, the beam mechanism includes:

The beam body, the support seats are symmetrically arranged on the side walls at both ends of the beam body;

A positioning frame arranged at the upper end of the beam body;

set in the positioning frame and connected to the support body of the beam body;

The upper end of the supporting body is a plane, which is used to abut against the boom, and the lower end is embedded in the positioning frame, which is provided with an interface fixed with the beam body along the length direction.

Further, in a preferred manner of the present invention, the telescopic legs include:

The fixed section, the lower end of the fixed section is open, and the side wall of the lower end is provided with a pin hole;

a first lug set on the upper end of the fixing section, the first lug is hingedly connected with the support base;

The movable section is sleeved in the fixed section and used to adjust the length of the telescopic outrigger, the movable section is provided with a pin hole, and the position between the fixed section and the movable section is defined by the pin;

It is arranged at the lower end of the movable section and is used as a non-slip bottom plate for ground support.

Further, in a preferred mode of the present invention, the telescopic outriggers are provided with 4 pieces, which are symmetrically arranged on both ends of the beam body through the support seat and the pin shaft on the beam body in a group of 2 pieces. on the wall;

The connecting rod assembly is connected between two oppositely arranged telescopic outriggers on the side walls at both ends of the beam body, so that they are arranged in an A shape, and the cross bar connects the two legs on the same side wall of the beam body. Between two adjacent telescopic outriggers, it is arranged in an n shape.

Further, in a preferred manner of the present invention, the non-slip bottom plate includes:

a bottom plate main body connected to the lower end of the movable section;

The anti-slip body is arranged under the main body of the bottom plate and contacts the ground. The anti-slip body is specifically a wear-resistant rubber layer or a wooden layer, which is used to increase the adhesion with the ground support.

Further, in a preferred manner of the present invention, the connecting rod assembly includes:

Symmetrically arranged on the connecting rod seat on the inner wall of the two opposite fixed sections;

A first connecting rod, a second connecting rod and a third connecting rod arranged sequentially between the connecting rod seats from top to bottom;

The first connecting rod, the second connecting rod and the third connecting rod are detachably connected to the connecting rod seat through a pin shaft, and the three are arranged parallel to each other, and the length of the rod body increases sequentially;

The first connecting rod, the second connecting rod and the third connecting rod all include two rod bodies;

The two rod bodies are arranged symmetrically with each other, one end of the rod body is connected to the connecting rod seat, and the other end is provided with an end plate, and an internal thread is tapped on the end plate.

Further, in a preferred manner of the present invention, the jib support device of the portal crane further includes: steps arranged side by side on the outer wall of the fixed section, the steps are specifically a U-shaped rod structure, which consists of Circular cross-section pipes or rods are bent and used for operators to crawl up and down;

It is arranged on the outer surface perpendicular to the connecting rod seat on the fixed section, and the second ear seat below a connecting rod seat near the end of the beam mechanism on the fixed section, and the second ear seat is used for the support device described The first connecting rod, the second connecting rod and the third connecting rod are placed through the pin shaft when the telescopic outrigger rotates and folds around the support base of the beam mechanism.

Further, in a preferred mode of the present invention, the screw mechanism includes:

a screw body disposed between the connecting rod assemblies;

The two ends of the screw main body are respectively connected to two symmetrically arranged rod bodies, and the screw threads at both ends are in opposite directions, and are threaded into the end plate at the end of the rod body;

A rotary interface arranged in the middle of the screw body for twisting;

The threaded sections at both ends of the screw main body are arranged on the locking nuts abutting against or away from the end face of the end plate on the rod body, and the locking nuts are used to lock or adjust the length of the connecting rod assembly.

Further, in a preferred mode of the present invention, the boom support device of the portal crane further includes: a connecting part arranged on the beam body for fixing the position of the boom;

The connecting part includes: a connecting frame connected to the beam body; a base connected to the connecting frame at one end and connected to the arm frame at the other end, on which a connecting interface is arranged.

Another technical scheme provided by the application is as follows:

The application provides a method for assembling and connecting the boom of the portal crane and the trunk bridge, using the boom support device of the portal crane as a tool, including the following steps:

S1. Device adjustment: unfold the support device and place it on a flat ground, adjust the telescopic outrigger and connecting rod assembly to determine the support height and support angle of the boom;

S2. Boom hoisting: use a crane to lift the boom and place it on the support device, so that the distance H between the boom and the elephant trunk bridge is 4 to 6 meters from the ground, and the support point of the support device in the length direction of the boom The distance from the starting point of the change of the section of the boom is greater than 0.5 meters, and the moment generated by the center of gravity of the boom from the support point is not less than 1.3 times the moment of the center of gravity of the elephant trunk beam to the support point after the trunk beam is assembled;

S3. Boom fixing: Weld the base in the connecting part on both sides of the supporting point of the boom and the supporting device, and then connect one end of the connecting frame in the connecting part to the base and the other end to the beam body, connecting the beam mechanism and the arm frame as a whole;

S4. Hoisting of the trunk beam: Lift the trunk beam with a crane, align the interface on the jib frame, and assemble the pin shaft connector in the interface; The connecting frame is used to lift the arm frame and the elephant trunk beam to complete the assembly connection of the two.

The invention provides a support device for a boom of a portal crane and a method for assembling and connecting the boom and a trunk beam. The support seat on the side walls at both ends of the beam mechanism; one end is movably connected to the support seat, and the other end touches the telescopic outrigger on the ground, and the telescopic outrigger is used to carry the weight of the beam mechanism and the boom, and through The support height of the telescopic adjustment arm frame; the cross bar arranged between the telescopic legs on the same side wall of the cross beam mechanism; the connecting rod arranged between the telescopic legs on the side walls at both ends of the cross beam mechanism Assemblies, the connecting rod assembly and the cross bar are used to connect the telescopic outrigger as a whole; The telescopic outriggers on both sides of the beam mechanism can be rotated and folded around the support base; the screw mechanism is arranged on the connecting rod assembly to adjust the length of the connecting rod assembly, and the screw mechanism is used to combine the telescopic outriggers to adjust the arm The support angle of the rack. Wherein, during the use of the boom support device of the portal crane, the beam mechanism is installed at the uppermost end and abuts against the boom frame of the portal crane to realize boom support; the lower part of the beam mechanism is hingedly connected by a support seat The telescopic outriggers are arranged in pairs, and the telescopic outriggers are connected as a whole through the cross bar and the connecting rod assembly, which improves the mechanical performance and overall stability of the device; and the adjustment of the support height of the boom , the length of the telescopic outrigger can be extended or contracted according to the installation requirements, so as to realize the adjustment of the support height of the boom, and for the adjustment of the support angle of the boom, a screw mechanism is set on the connecting rod assembly, and through the screw mechanism Rotate at a fixed axis, adjust the length of the connecting rod assembly, change the span between the telescopic outriggers placed opposite to the side walls at both ends of the beam mechanism, and combine the height adjustment of the telescopic outriggers to achieve boom support Height adjustment; secondly, the upper end of the telescopic outrigger is movably connected with the support seat. After the supporting operation is completed and the connecting rod assembly is disassembled, the telescopic outrigger can be folded and stored, which takes up little space and is convenient for storage . Therefore, compared with the prior art, the technical solution provided by the present invention can adjust the support angle and height of the boom, ensure stable and reliable support when the boom is assembled, have good adaptability to working conditions and convenient storage, and can improve Improve the production efficiency of the jib assembly connection, and reduce safety hazards and additional costs.

In summary, the beneficial effects of the present invention are: the support device provided by the present invention, the length of the connecting rod assembly can be adjusted under the action of the screw mechanism, combined with the height of the telescopic legs can be extended or contracted, and can be adjusted according to the site It is required to adjust the support height and support height of the boom, which has good stability and adaptability to working conditions, and saves manual adjustment time. The support device provided by the present invention is a foldable structure, which can be folded or opened as required. When in use, the connecting rod assembly is arranged between the two telescopic legs to improve the overall stability. When folding, the connecting rod assembly is disassembled and placed on the telescopic support The side of the legs takes up little space and is convenient for storage. In the support device provided by the present invention, the support mechanism in contact with the boom is made of a tough material with a large friction coefficient and pressure resistance, which reduces the relative movement between the boom and the support device and prevents damage to the anti-corrosion coating at the bottom of the boom, and the telescopic support The anti-skid body with a large friction coefficient and wear resistance provided at the contact between the lower end of the leg and the ground increases the adhesion between the support device and the ground during work, prevents movement and damage to the ground. The assembly and connection method provided by the present invention determines the position and height requirements of the boom support point, fully ensures safety, and reduces potential safety hazards. Through the detachable connection of the connecting parts and the boom support device, when the boom is assembled and connected with the trunk beam , to ensure that the boom and the supporting device do not move, reduce the number of alignments, reduce the occurrence of potential safety hazards and improve the efficiency of on-site assembly.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the front view of the jib support device of the portal crane provided by the embodiment of the present invention;

Fig. 2 is a side view of the jib support device of the portal crane provided by the embodiment of the present invention;

Fig. 3 is a schematic side view of the folded jib support device of the portal crane provided by the embodiment of the present invention;

Fig. 4 is a schematic side view of the beam mechanism provided by an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of the anti-skid base provided by the embodiment of the present invention;

Fig. 6 is a schematic structural diagram of the screw mechanism provided by an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of the connecting component provided by an embodiment of the present invention;

Fig. 8 is a schematic structural view of the support body with a right-angled trapezoidal section provided by an embodiment of the present invention;

Fig. 9 is a schematic structural view of the semi-elliptical cross-section support body provided by the embodiment of the present invention;

Fig. 10 is a schematic diagram of the installation and placement positions of the jib frame of the portal crane and the supporting device provided by the embodiment of the present invention;

Fig. 11 is a schematic diagram of the installation and connection of the connecting part provided by the embodiment of the present invention with the boom and the supporting device;

Fig. 12 is a schematic diagram of the installation relationship between the boom, the trunk bridge and the supporting device provided by the embodiment of the present invention.

Explanation of reference signs:

Beam mechanism 1; support seat 2; telescopic outrigger 3; crossbar 4; connecting rod assembly 5; screw mechanism 6; beam body 7; positioning frame 8; support body 9; fixed joint 10; first ear seat 11; movable Section 12; anti-skid bottom plate 13; bottom plate main body 14; anti-skid body 15; connecting rod seat 16; first connecting rod 17; second connecting rod 18; third connecting rod 19; ; Lock nut 23; Rotary interface 24; Connecting parts 25; Base 26; Connecting frame 27.

Detailed ways

In order to enable those skilled in the art to better understand the technical solution in the application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the drawings in the embodiment of the application. Obviously, the described implementation Examples are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

It should be noted that when an element is referred to as being "fixed" or "disposed on" another element, it may be directly disposed on another element or indirectly disposed on another element; when an element is referred to as being "connected" It may be directly connected to another element or indirectly connected to another element.

It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "first", "second", "vertical", "horizontal", " The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the It should not be construed as limiting the application to indicate that a device or element must have a particular orientation, be constructed, and operate in a particular orientation.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present application, the meanings of "plurality" and "several" are two or more, unless otherwise specifically defined.

It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the conditions that this application can implement , so it has no technical substantive meaning, and any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of the disclosure disclosed in this application without affecting the effect and purpose of this application. The technical content must be within the scope covered.

As shown in Figures 1 to 12, the supporting device for the jib of the portal crane provided in the embodiment of the present application includes: a crossbeam mechanism 1 abutting against the jib of the portal crane for supporting the jib; The support base 2 on the side walls at both ends of the beam mechanism 1; one end is movably connected to the support base 2, and the other end touches the telescopic outrigger 3 on the ground, and the telescopic outrigger 3 is used to carry the beam mechanism 1 and the arm frame weight, and adjust the support height of the boom through telescopic adjustment; the cross bar 4 arranged between the telescopic outriggers 3 on the same side wall of the beam mechanism 1; The connecting rod assembly 5 between the telescopic legs 3, the connecting rod assembly 5 and the cross bar 4 are used to connect the telescopic legs 3 into a whole; the connecting rod assembly 5 is detachably connected, and the The connecting rod assembly 5 is placed on the side of the telescopic leg 3, so that the telescopic leg 3 on both sides of the beam mechanism 1 can rotate and fold around the support seat 2; it is arranged on the connecting rod assembly 5, and the connecting rod is adjusted The screw mechanism 6 of the length of the assembly 5 is used for adjusting the support angle of the boom in combination with the telescopic outrigger 3 .

The present invention provides a support device for the boom of a portal crane, which specifically includes: a beam mechanism 1 abutting against the boom of the portal crane for supporting the boom; Support base 2; one end is movably connected with the support base 2, and the other end touches the telescopic outrigger 3 on the ground. The telescopic outrigger 3 is used to carry the weight of the beam mechanism 1 and the boom, and adjust the boom through telescopic The support height; the crossbar 4 arranged between the telescopic outriggers 3 on the same side wall of the crossbeam mechanism 1; A rod assembly 5, the connecting rod assembly 5 and the cross bar 4 are used to connect the telescopic outrigger 3 into a whole; the connecting rod assembly 5 is detachably connected, and the disassembled connecting rod assembly 5 is placed on the On the side of the telescopic leg 3, the telescopic leg 3 on both sides of the beam mechanism 1 can be rotated and folded around the support seat 2; it is arranged on the connecting rod assembly 5, and the screw mechanism 6 for adjusting the length of the connecting rod assembly 5, The screw mechanism 6 is used in combination with the telescopic outrigger 3 to adjust the support angle of the boom. Wherein, during the use of the boom support device of the portal crane, the beam mechanism 1 is installed at the uppermost end, abuts against the boom frame of the portal crane, and realizes boom support; 2. The telescopic outriggers 3 are hingedly connected, and the telescopic outriggers 3 are arranged in pairs. The telescopic outriggers 3 are connected as a whole through the cross bar 4 and the connecting rod assembly 5, so as to improve the mechanical properties and overall stability of the device; For the adjustment of the support height of the boom, the length of the telescopic leg 3 can be extended or contracted according to the installation requirements, thereby realizing the adjustment of the support height of the boom, and for the adjustment of the support angle of the boom, the connecting rod assembly 5 A screw mechanism 6 is arranged on the top, and the length of the connecting rod assembly 5 is adjusted through the fixed-axis rotation of the screw mechanism 6, so that the span between the telescopic legs 3 placed opposite to the side walls at both ends of the beam mechanism 1 is changed. Combined with the height adjustment of the telescopic outrigger 3, the adjustment of the support height of the boom is realized; secondly, the upper end of the telescopic outrigger 3 is movably connected with the support base 2, and after the support operation is completed, the connecting rod assembly 5 is disassembled Finally, the telescopic outrigger 3 can be folded and stored, occupying a small space and being convenient for transportation and storage.

The technical solution of the present invention is specifically set forth below in conjunction with specific embodiments:

Specifically, in the embodiment of the present invention, the beam mechanism 1 includes: a beam body 7, and the support bases 2 are symmetrically arranged on the side walls at both ends of the beam body 7; The positioning frame 8 at the upper end; the support body 9 that is arranged in the positioning frame 8 and connected with the beam body 7; the upper end of the support body 9 is a plane for abutting against the boom, and the lower end is embedded in the Inside the positioning frame 8 , an interface for mounting and fixing the beam body 7 is provided along the length direction.

Wherein, the positioning frame 8 is fixed on the upper end of the beam body 7, and is used to determine the position of the support body 9 on the beam body 7; Arm frame; the beam body 7 is a box-shaped structure with a polygonal cross-section, and a reinforcing rib plate is arranged inside. Support 9.

Specifically, in the embodiment of the present invention, the support base 2 is composed of multiple pieces, each of which is composed of multiple lug plates and rib plates, which are specifically U-shaped structural seats hingedly connected with the telescopic outriggers. .

Specifically, in the embodiment of the present invention, the cross-section of the support body 9 is a polygonal structure.

Wherein, adopt the support body 9 of rectangular section in this embodiment, the crossbeam body 7 of rectangular trapezoidal cross-section is arranged under rectangular section support body 9, the inclined surface of right-angled trapezoid is upward, connects support body 9 on it, makes the upper of rectangular section support body The plane can be in stable contact with the bottom surface of the boom; and the polygonal structure includes a semi-ellipse, a right-angled trapezoid, etc. In another embodiment of the present application, the support body 9 adopts a right-angled trapezoidal section support body, and the slope of the right-angled trapezoid faces upwards , is in direct contact with the boom, and a rectangular cross-section beam body 7 is set below as a support; and the semi-elliptical support body is also matched with a rectangular cross-section beam body 7, and the arc-shaped surface of the support body 9 faces upwards and contacts with the bottom surface of the boom frame. The support point of the support body 9 can be changed along with the position of the boom on the arc surface, which is convenient for the assembly of the boom and the trunk bridge; the support body 9 is made of a tough material with a large friction coefficient and strong pressure bearing capacity. into, such as camphor wood, synthetic rubber, etc.

Specifically, in the embodiment of the present invention, the telescopic outrigger 3 includes: a fixed section 10, the lower end of which is open, and a pin hole is arranged on the side wall of the lower end; The first ear seat 11, the first ear seat 11 is hingedly connected with the support seat 2; the movable joint 12 that is sleeved in the fixed joint 10 for adjusting the length of the telescopic leg 3, the movable joint A pin shaft hole is provided on the section 12, and the position between the fixed section 10 and the movable section 12 is defined by the pin shaft; a non-slip bottom plate 13 is provided at the lower end of the movable section 12 for ground support.

Wherein, the fixed joint 10 is a polygonal pipe fitting, preferably a rectangular or square section, and the pin shaft hole on it runs through another pipe surface parallel to the pipe surface, and the number is preferably 2; the movable joint 12 is The polygonal pipe fitting is preferably a rectangular or square cross-section. The pin hole on it runs through another pipe surface parallel to the pipe surface. The position of the pin hole corresponds to the fixed joint 10. The number of pin holes is greater than or equal to that of the fixed joint. 10 upper pin shaft hole quantity, and the hole pitch is equal to the hole pitch of the pin shaft hole on the fixed section 10.

Specifically, in the embodiment of the present invention, the telescopic outriggers 3 are provided with four pieces, and the support base 2 and the pin shaft on the beam body 7 are arranged symmetrically on both sides of the beam body 7 through two pieces as a group. On the end side wall; the connecting rod assembly 5 is connected between the two oppositely arranged telescopic legs 3 on the side walls at both ends of the beam body 7, so that it is arranged in an A shape, and the cross bar 4 is connected to the Between the two adjacent telescopic legs 3 arranged on the same side of the beam body 7, it is arranged in an n shape.

Wherein, the crossbar 4 is used to connect the two fixed joints 10 arranged adjacent to the same side wall of the crossbeam body 7, which is multiple pieces, and the telescopic legs 3 on the same side of the crossbeam body 7 are connected as a whole , improve the mechanical properties and stability of the support device, which is a rod structure; the connecting rod assembly 5 is used to connect the two fixed joints 10 that are arranged opposite to the side walls at both ends of the beam body 7, and connect the two ends of the beam body 7 The telescopic outriggers 3 on the side wall are connected as a whole to improve the mechanical performance and stability of the supporting device, which is also a rod structure.

Specifically, in the embodiment of the present invention, the anti-slip bottom plate 13 includes: a bottom plate main body 14 connected to the lower end of the movable joint 12; The anti-skid body 15 is specifically a wear-resistant rubber layer or a wood layer, which is used to increase the adhesion with the ground support.

Wherein, the anti-skid body 15 is installed on the bottom of the base plate main body 14 and is in contact with the ground. The anti-skid body 15 is a large friction coefficient and wear-resistant rubber or wood material, which is used to increase the adhesion of the support device to the ground when it is working, and prevent it from moving. .

Specifically, in the embodiment of the present invention, the connecting rod assembly 5 includes: connecting rod seats 16 symmetrically arranged on the inner side walls of the two opposite fixed sections 10; The first connecting rod 17, the second connecting rod 18 and the third connecting rod 19 between the seat 16; The seat 16 is detachably connected, and the three are arranged parallel to each other, and the length of the rod body increases successively; the first connecting rod 17, the second connecting rod 18 and the third connecting rod 19 all include two rod bodies; Symmetrically arranged, one end of the rod body is connected to the connecting rod seat 16, and the other end is provided with an end plate, and an internal thread is tapped on the end plate.

Among them, in the embodiment of the present invention, the connecting rod seat 16 is specifically a U-shaped seat body composed of lug plates with pin holes, a bottom plate, and a rib plate, which are used to pass through the pin shaft and the connecting rod assembly. 5 detachable connections; the first connecting rod 17, the second connecting rod 18 and the third connecting rod 19 are composed of pipe fittings and connecting lugs, the connecting lugs are arranged at one end of the pipe fittings, and are detachable from the connecting rod seat 16 connection, the other end of the pipe fitting is provided with an end plate, and the internal threads provided on the two end plates symmetrically arranged on the same connecting rod have the same or opposite directions of rotation: when the threads at both ends of the screw mechanism 6 have opposite directions of rotation, the two symmetrically arranged The internal threads provided on the end plates of the two parts have the same direction of rotation; when the threads at both ends of the screw mechanism 6 have the same direction of rotation, the directions of the internal threads provided on the symmetrically arranged two end plates are opposite.

Specifically, in the embodiment of the present invention, the jib support device of the portal crane further includes: steps 20 arranged side by side on the outer wall of the fixed section 10, and the steps 20 are specifically U-shaped rod structures, which It is made by bending pipes or rods with circular cross-sections, and is used for operators to crawl up and down; it is arranged on the outer side of the fixed section 10 perpendicular to the connecting rod seat 16, and on the fixed section 10 near the end of the beam mechanism 1 A second ear seat 21 below the connecting rod seat 16, the second ear seat 21 is used for the support device to place the first ear seat 2 through the pin shaft when the telescopic leg 3 is rotated and folded around the support seat 2 of the beam mechanism 1. A connecting rod 17 , a second connecting rod 18 and a third connecting rod 19 .

Wherein, in the embodiment of the present invention, the second ear seat 21 is specifically a U-shaped plate structure, and after the support operation is completed, the connecting rod assembly 5 is disassembled and placed on the second ear seat 21 Among them, the telescopic outriggers are 3 folded to make full use of the space.

Specifically, in the embodiment of the present invention, the screw mechanism 6 includes: a screw body 22 arranged between the connecting rod assemblies 5; The rod body has opposite helical threads at both ends, and is threadedly connected to the end plate at the end of the rod body; it is arranged in the middle of the screw body 22 and is used for twisting the rotating interface 24; it is arranged on both sides of the screw body 22 The end threaded section is in contact with or away from the locking nut 23 on the end surface of the end plate on the rod body, and the locking nut 23 is used to lock or adjust the length of the connecting rod assembly 5 .

Specifically, in the embodiment of the present invention, the boom support device of the portal crane also includes: a connecting part 25 arranged on the beam body 7 for fixing the position of the boom; the connecting part 25 includes : a connecting frame 27 connected to the beam body 7; one end connected to the connecting frame 27, and the other end connected to the base 26 of the jib, on which a connecting interface is arranged.

In the embodiment of the present invention, the connecting part 25 is used to fix the position of the boom after the support position of the boom is determined; wherein, the base 26 is a plate, and the boom is connected or connected to the boom through the connection interface. Frame welding, connecting frame 27 sections are polygonal rods, beams, preferably box-shaped structural rods.

The present invention also provides a method for assembling and connecting the boom of the portal crane and the trunk bridge, using the boom support device of the portal crane as a tool, comprising the following steps:

S1. Device adjustment: unfold the support device and place it on a flat ground, adjust the telescopic outrigger 3 and the connecting rod assembly 5 to determine the support height and support angle of the boom;

Among them, the flat ground area meets the area occupied by the jib and the trunk beam after assembly and the area required for the hoisting crane to work;

S2. Boom hoisting: use a crane to lift the boom and place it on the support device, so that the distance H between the boom and the elephant trunk bridge is 4 to 6 meters from the ground, and the support point of the support device in the length direction of the boom The distance between B and the starting point A of the section change of the boom is greater than 0.5 meters, and the moment generated by the center of gravity of the boom from the support point B is not less than 1.3 times the moment of the center of gravity of the elephant trunk beam to the support point B after the assembly of the trunk beam;

S3, boom fixing: Weld the base 26 in the connecting part 25 on both sides of the supporting point of the boom and the supporting device, then connect one end of the connecting frame 27 in the connecting part 25 to the base 26, and connect the other end to the The beam body 7 connects the beam mechanism 1 and the jib as a whole;

S4. Hoisting of the trunk beam: Lift the trunk beam with a crane, align the interface on the jib frame, and assemble the pin shaft connector in the interface; Describe connecting frame 27, lift boom and elephant trunk beam, finish the assembly connection of both.

From the above, the present invention aims at the problems of low efficiency, large potential safety hazards and additional cost increase caused by the large size of the auxiliary support when the jib of the existing four-link structure portal crane is assembled and connected with the trunk beam, and provides a An assembly and connection method with high assembly and connection efficiency between the boom and the elephant trunk beam, and a small safety risk, as well as a boom support device and an assembly and connection method with simple structure, good adaptability to working conditions, small space occupation, and convenient transportation and storage, so as to improve the assembly and connection Improve production efficiency, reduce potential safety hazards and additional costs. In this device, the beam mechanism 1 is installed at the uppermost end, wherein the support body 9 abuts against the arm frame of the portal crane to realize the support of the arm frame, and the beam body 7 is arranged below the support body 9 as a pressure-bearing structure; the telescopic support The legs 3 are hingedly connected to the support base 2 by using the first ear seat 11 at the upper end, the telescopic legs 3 are arranged in pairs, and the cross bar 4 is arranged between two adjacent telescopic legs 3 on the same side wall of the beam body 7, A connecting rod assembly 5 is arranged between two adjacent telescopic legs 3 on the side walls at both ends of the beam body 7, and the telescopic legs 3 are connected as a whole through the cross rod 4 and the connecting rod assembly 5, thereby improving the mechanical strength of the device. performance and overall stability; and for the adjustment of the support height of the boom, the telescopic outrigger 3 is provided with a fixed section 10 and or a movable section 12 according to installation requirements, and the movable section 12 can be telescopically adjusted in the fixed section 10 so that its length can be extended. long or shrink, so as to realize the adjustment of the height of the boom support, and for the adjustment of the support angle of the boom, the screw mechanism 6 is arranged on the connecting rod assembly 5, through the fixed axis rotation of the screw main body 22, combined with the lock nut 23 , the length of the connecting rod assembly 5 can be adjusted or locked, so that the span between the telescopic outriggers 3 arranged opposite to the side walls at both ends of the beam mechanism 1 can be changed, combined with the height adjustment of the telescopic outriggers 3, thereby realizing The adjustment of the support height of the boom; secondly, the upper end of the telescopic leg 3 is flexibly connected with the support seat 2, and after the support operation is completed, the first link 17, the second link 18 and the second link 18 in the link assembly 5 After the third connecting rod 19 is disassembled, it can be placed in the second ear seat 21, so that the telescopic outrigger 3 can be folded and stored, and the space occupation is small, and the storage is convenient. Therefore, compared with the prior art, the technical solution provided by the present invention can adjust the support angle and height of the boom, ensure stable and reliable support when the boom is assembled, have good adaptability to working conditions and convenient storage, and can improve Improve the production efficiency of the jib assembly connection, and reduce safety hazards and additional costs.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A portal crane jib support device, characterized in that it comprises: The beam mechanism abuts against the jib frame of the portal crane and is used for jib support; Support seats arranged on the side walls at both ends of the beam mechanism; One end is movably connected to the support seat, and the other end touches the telescopic outrigger on the ground. The telescopic outrigger is used to carry the weight of the beam mechanism and the boom, and adjust the support height of the boom through telescopic adjustment; a cross bar arranged between the telescopic outriggers on the same side wall of the cross beam mechanism; A connecting rod assembly arranged between the telescopic outriggers on the side walls at both ends of the beam mechanism, the connecting rod assembly and the cross bar are used to connect the telescopic outriggers as a whole; The connecting rod assembly is detachably connected, and the disassembled connecting rod assembly is placed on the side of the telescopic outrigger, so that the telescopic outriggers on both sides of the beam mechanism can rotate and fold around the support base; The screw mechanism is arranged on the connecting rod assembly and adjusts the length of the connecting rod assembly, and the screw mechanism is used to adjust the support angle of the boom in conjunction with the telescopic outrigger. 2. The jib support device of a portal crane according to claim 1, wherein the beam mechanism comprises: The beam body, the support seats are symmetrically arranged on the side walls at both ends of the beam body; A positioning frame arranged at the upper end of the beam body; set in the positioning frame and connected to the support body of the beam body; The upper end of the supporting body is a plane, which is used to abut against the boom, and the lower end is embedded in the positioning frame, which is provided with an interface fixed with the beam body along the length direction. 3. The jib support device of a portal crane according to claim 2, wherein the telescopic outrigger comprises: The fixed section, the lower end of the fixed section is open, and the side wall of the lower end is provided with a pin hole; a first lug set on the upper end of the fixing section, the first lug is hingedly connected with the support base; The movable section is sleeved in the fixed section and used to adjust the length of the telescopic outrigger, the movable section is provided with a pin hole, and the position between the fixed section and the movable section is defined by the pin; It is arranged at the lower end of the movable section and is used as a non-slip bottom plate for ground support. 4. The jib support device of a portal crane according to claim 3, wherein the telescopic outriggers are provided with four pieces, and two pieces form a group through the support seat and the pin shaft on the beam body, Symmetrically arranged on the side walls at both ends of the beam body; The connecting rod assembly is connected between two oppositely arranged telescopic outriggers on the side walls at both ends of the beam body, so that they are arranged in an A shape, and the cross bar connects the two legs on the same side wall of the beam body. Between two adjacent telescopic outriggers, it is arranged in an n shape. 5. The jib support device of a portal crane according to claim 3, wherein the anti-slip bottom plate comprises: a bottom plate main body connected to the lower end of the movable section; The anti-slip body is arranged under the main body of the bottom plate and contacts the ground. The anti-slip body is specifically a wear-resistant rubber layer or a wooden layer, which is used to increase the adhesion with the ground support. 6. The jib support device of a portal crane according to claim 3, wherein the connecting rod assembly comprises: Symmetrically arranged on the connecting rod seat on the inner wall of the two opposite fixed sections; A first connecting rod, a second connecting rod and a third connecting rod arranged sequentially between the connecting rod seats from top to bottom; The first connecting rod, the second connecting rod and the third connecting rod are detachably connected to the connecting rod seat through a pin shaft, and the three are arranged parallel to each other, and the length of the rod body increases sequentially; The first connecting rod, the second connecting rod and the third connecting rod all include two rod bodies; The two rod bodies are arranged symmetrically with each other, one end of the rod body is connected to the connecting rod seat, and the other end is provided with an end plate, and an internal thread is tapped on the end plate. 7. The jib support device of the portal crane according to claim 6, wherein the jib support device of the portal crane further comprises: Steps arranged side by side on the outer wall of the fixed section, the steps are specifically a U-shaped rod structure, which is made of a pipe or rod with a circular cross section, and is used for operators to crawl up and down; It is arranged on the outer surface perpendicular to the connecting rod seat on the fixed section, and the second ear seat below a connecting rod seat near the end of the beam mechanism on the fixed section, and the second ear seat is used for the support device described The first connecting rod, the second connecting rod and the third connecting rod are placed through the pin shaft when the telescopic outrigger rotates and folds around the support base of the beam mechanism. 8. The jib support device of a portal crane according to claim 6, wherein the screw mechanism comprises: a screw body disposed between the connecting rod assemblies; The two ends of the screw main body are respectively connected to two symmetrically arranged rod bodies, and the screw threads at both ends are in opposite directions, and are threaded into the end plate at the end of the rod body; A rotary interface arranged in the middle of the screw body for twisting; The threaded sections at both ends of the screw main body are arranged on the locking nuts abutting against or away from the end face of the end plate on the rod body, and the locking nuts are used to lock or adjust the length of the connecting rod assembly. 9. The jib support device of the portal crane according to claim 2, wherein the jib support device of the portal crane further comprises: A connecting part arranged on the beam body and used to fix the position of the boom; The connecting part includes: a connecting frame connected to the beam body; a base connected to the connecting frame at one end and connected to the arm frame at the other end, on which a connecting interface is arranged. 10. A method for assembling and connecting the jib frame of a portal crane and the trunk beam, characterized in that, using the jib support device of a portal crane according to any one of claims 1 to 9 as a tool, comprising the following steps: S1. Device adjustment: unfold the support device and place it on a flat ground, adjust the telescopic outrigger and connecting rod assembly to determine the support height and support angle of the boom; S2. Boom hoisting: use a crane to lift the boom and place it on the support device, so that the distance H between the boom and the elephant trunk bridge is 4 to 6 meters from the ground, and the support point of the support device in the length direction of the boom The distance from the starting point of the change of the section of the boom is greater than 0.5 meters, and the moment generated by the center of gravity of the boom from the support point is not less than 1.3 times the moment of the center of gravity of the elephant trunk beam to the support point after the trunk beam is assembled; S3. Boom fixing: Weld the base in the connecting part on both sides of the supporting point of the boom and the supporting device, and then connect one end of the connecting frame in the connecting part to the base and the other end to the beam body, connecting the beam mechanism and the arm frame as a whole; S4. Hoisting of the trunk beam: Lift the trunk beam with a crane, align the interface on the jib frame, and assemble the pin shaft connector in the interface; The connecting frame is used to lift the arm frame and the elephant trunk beam to complete the assembly connection of the two.

Images