CN115402926A - Portal crane boom support device and method for assembling and connecting boom and trunk bridge - Google Patents

Abstract

The application discloses a gantry crane cantilever crane strutting arrangement and application device assembly connection cantilever crane and the method like the bridge of the nose, strutting arrangement includes: a beam mechanism; the supporting seats are arranged on the side walls of the two ends of the cross beam mechanism; the telescopic supporting legs are movably connected with the supporting seat; the cross rod is arranged between the telescopic supporting legs on the same side wall of the cross beam mechanism; the connecting rod assemblies are arranged between the telescopic supporting legs on the side walls of the two ends of the beam mechanism and are detachably connected, and the connecting rod assemblies are placed on the side surfaces of the telescopic supporting legs after being detached, so that the telescopic supporting legs on the two sides of the beam mechanism can rotate around the supporting seat and be folded; and the screw rod mechanism is arranged on the connecting rod assembly and used for adjusting the support angle of the arm support by combining the telescopic supporting legs. The utility model discloses a portal crane cantilever crane strutting arrangement, its support angle and the height that can adjust the cantilever crane ensure steady reliable support when the cantilever crane assembles, and operating mode adaptability is good, occupation space is little and the transportation is deposited conveniently, can improve the production efficiency of cantilever crane assembly to and reduce potential safety hazard and additional cost.

Description

Portal crane boom support device and method for assembling and connecting boom and trunk bridge

Technical Field

The application relates to the technical field of manufacturing of gantry cranes, in particular to a supporting device for a boom of a gantry crane and a method for assembling and connecting the boom of the gantry crane and a trunk bridge by using the supporting device.

Background

At present, the complete machine assembly and transportation mode of the portal crane with a four-bar linkage structure are mainly two types: the first method is that the whole factory is assembled and debugged, and then the whole factory is transported to a use place by a special ship; the second is that the parts are transported separately to the place of use, and the reconstruction site is assembled into a complete machine and debugged. The second mode has relatively low requirements on environments such as the site and the position of a crane manufacturing unit and the like, has stronger adaptability and flexibility, occupies certain site time during site assembly, but has no obvious difference on the whole production period of the whole crane, is only different from the crane manufacturing plant and the crane using site, and is generally adopted at present.

Based on the above, when the traditional four-bar linkage portal crane boom frame is assembled with the trunk bridge, the boom frame and the trunk bridge are respectively lifted by mobile hoisting equipment such as a truck crane or a gantry crane for assembly connection or are directly supported below the boom frame by a large-size n-shaped split heads for assembly connection with the trunk bridge. However, this approach has a number of disadvantages: 1. the supporting angle and the supporting height can not be adjusted by using a split heads, so that the stable and reliable supporting of arm supports with different sizes can not be ensured, the sliding risk and the potential safety hazard are increased, and the working condition adaptability is poor; 2. the shape size of the split heads is large, and particularly, when the split heads are installed on site, the split heads occupy space for transportation and storage, are inconvenient and increase additional cost; 3. the split heads are directly and rigidly supported below the arm support, the position of a fulcrum has no accurate range, the arm support is easy to slide on the split heads or topple over when being assembled with the trunk of the elephant nose, so that great potential safety hazards exist, and meanwhile, an anti-corrosion coating of the arm support is easy to damage, and the service life is influenced; 4. the arm support and the elephant nose bridge crane shake greatly in the air, connecting hole sites are difficult to align, assembly efficiency is affected, and great potential safety hazards exist.

Therefore, how to provide a portal crane boom support device and a method for assembling and connecting a boom and a bridge of a elephant nose by using the device can adjust the support angle and the height of the boom, ensure stable and reliable support during boom assembly, have good working condition adaptability and convenient transportation and storage, can improve the production efficiency of boom assembly and connection, reduce potential safety hazards and additional cost, and become the technical problem to be solved urgently by technical personnel in the field.

Disclosure of Invention

In order to solve the technical problems, the application provides a portal crane boom support device and a method for assembling and connecting a boom and a elephant nose bridge by using the device, the support angle and the height of the boom can be adjusted, stable and reliable support during boom assembly is ensured, working condition adaptability is good, a connecting rod assembly is arranged between two telescopic supporting legs during use, overall stability is improved, the connecting rod assembly is placed on the side face of the telescopic supporting legs after being disassembled during folding, the occupied space is small, the transportation and storage are convenient, the production efficiency of boom assembly and connection can be improved, and potential safety hazards and additional cost are reduced.

The technical scheme provided by the application is as follows:

the application provides a gantry crane cantilever crane strutting arrangement includes: the beam mechanism is abutted against the arm support of the portal crane and is used for supporting the arm support; the supporting seats are arranged on the side walls of the two ends of the beam mechanism; one end of the telescopic supporting leg is movably connected with the supporting seat, the other end of the telescopic supporting leg is abutted against the ground, and the telescopic supporting leg is used for bearing the weight of the beam mechanism and the arm support and adjusting the supporting height of the arm support in a telescopic mode; the cross rod is arranged between the telescopic supporting legs on the same side wall of the cross beam mechanism; the connecting rod assemblies are arranged between the telescopic supporting legs on the side walls of the two ends of the cross beam mechanism, and the connecting rod assemblies and the cross rods are used for connecting the telescopic supporting legs into a whole; the connecting rod assemblies are detachably connected, and the disassembled connecting rod assemblies are placed on the side surfaces of the telescopic supporting legs, so that the telescopic supporting legs on the two sides of the beam mechanism can rotate around the supporting seat and be folded; and the screw rod mechanism is arranged on the connecting rod assembly and used for adjusting the length of the connecting rod assembly, and the screw rod mechanism is used for combining the telescopic supporting legs to adjust the supporting angle of the arm support.

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

the supporting seats are symmetrically arranged on the side walls of the two ends of the cross beam body in pairs;

the positioning frame is arranged at the upper end of the cross beam body;

the supporting body is arranged in the positioning frame and connected to the cross beam body;

the upper end of the supporting body is a plane and is used for being abutted against the arm support, the lower end of the supporting body is embedded in the positioning frame, and an interface which is fixedly installed with the cross beam body is arranged along the length direction of the supporting body.

Further, in a preferred mode of the present invention, the telescopic leg includes:

the lower end of the fixed joint is provided with an opening, and the side wall of the lower end of the fixed joint is provided with a pin shaft hole;

the first ear seat is arranged at the upper end of the fixed joint and is hinged with the supporting seat;

the movable joint is sleeved in the fixed joint and used for adjusting the length of the telescopic supporting leg, a pin shaft hole is formed in the movable joint, and the position between the fixed joint and the movable joint is limited through a pin shaft;

and the anti-skid bottom plate is arranged at the lower end of the movable joint and used for ground support.

Further, in a preferred mode of the invention, the telescopic supporting legs are provided with 4 pieces, and the supporting seats and the pin shafts on the cross beam body are symmetrically arranged on the side walls at two ends of the cross beam body in a group of 2 pieces;

the connecting rod assembly is connected between two opposite telescopic support legs on the side walls at the two ends of the cross beam body, so that the telescopic support legs are arranged in an A shape, and the cross rod is connected between two adjacent telescopic support legs on the side walls at the same side of the cross beam body, so that the telescopic support legs are arranged in an n shape.

Further, in a preferred mode of the present invention, the antiskid chassis includes:

the bottom plate main body is connected with the lower end of the movable joint;

the anti-skid body is arranged below the bottom plate main body and abutted to the ground, and the anti-skid body is specifically a wear-resistant rubber layer or a wood layer and is used for increasing the supporting adhesive force with the ground.

Further, in a preferred mode of the present invention, the link assembly includes:

the connecting rod seats are symmetrically arranged on the inner side walls of the two opposite fixed joints;

the first connecting rod, the second connecting rod and the third connecting rod are sequentially arranged 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 with the connecting rod seat through pin shafts and are arranged in parallel, and the length of a rod body of each connecting rod is sequentially increased;

the first connecting rod, the second connecting rod and the third connecting rod comprise two rod bodies;

the two the body of rod mutual symmetry sets up, and body of rod one end is connected the connecting rod seat, the other end is provided with the end plate, the internal thread has been attacked on the end plate.

Further, in a preferred mode of the present invention, the gantry crane boom support apparatus further includes: the pedals are arranged on the outer side wall of the fixed joint side by side, are of U-shaped rod body structures, are made of pipe fittings or rod pieces with circular cross sections in a bending mode, and are used for operators to crawl up and down;

set up in with connecting rod seat vertically lateral surface on the fixed knot, and the second ear seat of a connecting rod seat below that is close to crossbeam mechanism end on the fixed knot, the second ear seat is used for this strutting arrangement telescopic leg places through the round pin axle when rotating folding around the last supporting seat of crossbeam mechanism first connecting rod, second connecting rod and third connecting rod.

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

the screw rod main body is arranged between the connecting rod assemblies;

two ends of the screw rod main body are respectively connected with two rod bodies which are symmetrically arranged, the thread directions of the two ends of the screw rod main body are opposite, and the screw threads are connected in the end plates at the end parts of the rod bodies;

the rotary interface is arranged in the middle of the screw rod main body and used for screwing;

and the locking nuts are arranged on the thread sections at the two ends of the screw rod main body and abut against or are far away from the end plate end surface on the rod body, and the locking nuts are used for locking the length of the connecting rod assembly or adjusting the length of the connecting rod assembly.

Further, in a preferred mode of the present invention, the gantry crane boom support apparatus further includes: the connecting component is arranged on the cross beam body and used for fixing the position of the arm support;

the connecting member includes: the connecting frame is connected with the cross beam body; one end of the base is connected with the connecting frame, the other end of the base is connected with the arm support, and a connecting interface is arranged on the base.

Another technical scheme provided by the application is as follows:

the application provides a method for assembling and connecting a portal crane boom and a trunk bridge, which takes the portal crane boom support device as a tool and comprises the following steps:

s1, device adjustment: unfolding the supporting device and placing the supporting device on a flat ground, and adjusting the telescopic supporting legs and the connecting rod assembly to determine the supporting height and the supporting angle of the arm support;

s2, hoisting the arm support: a crane is used for hoisting an arm support and placing the arm support on the supporting device, so that the distance H between the connecting part of the arm support and the trunk of the elephant nose is 4-6 m from the ground, the distance between a supporting point of the supporting device on the length direction of the arm support and the starting point of the change of the section of the arm support is more than 0.5 m, and the moment generated by the distance between the gravity center of the arm support and the supporting point is not less than 1.3 times of the moment between the gravity center of the trunk of the elephant nose and the supporting point after the trunk of the elephant nose is assembled;

s3, arm support fixing: welding bases in the connecting parts on two sides of the supporting points of the arm support and the supporting device, and then connecting one end of a connecting frame in the connecting parts with the bases and connecting the other end of the connecting frame with the cross beam body to integrally connect the cross beam mechanism and the arm support;

s4, hoisting like a nose bridge: hoisting a trunk of a crane to align with a connector on the cantilever crane, and assembling a pin shaft connector in the connector; and then after the assembly of the gantry crane turntable column assembly and the cylindrical gantry is completed, the connecting frame is detached, and the arm support and the trunk bridge are hoisted to complete the assembly and the connection of the arm support and the trunk bridge.

The invention provides a portal crane boom support device and a method for assembling and connecting a boom and a trunk bridge, wherein the support comprises the following steps: the beam mechanism is abutted against the arm support of the portal crane and is used for supporting the arm support; the supporting seats are arranged on the side walls of the two ends of the cross beam mechanism; one end of the telescopic supporting leg is movably connected with the supporting seat, the other end of the telescopic supporting leg is abutted against the ground, and the telescopic supporting leg is used for bearing the weight of the beam mechanism and the arm support and adjusting the supporting height of the arm support in a telescopic mode; the cross rod is arranged between the telescopic supporting legs on the same side wall of the cross beam mechanism; the connecting rod assemblies are arranged between the telescopic supporting legs on the side walls of the two ends of the cross beam mechanism, and the connecting rod assemblies and the cross rods are used for connecting the telescopic supporting legs into a whole; the connecting rod assemblies are detachably connected, and the disassembled connecting rod assemblies are placed on the side surfaces of the telescopic supporting legs, so that the telescopic supporting legs on the two sides of the beam mechanism can rotate around the supporting seat to be folded; and the screw rod mechanism is arranged on the connecting rod assembly and used for adjusting the length of the connecting rod assembly, and the screw rod mechanism is used for combining the telescopic supporting legs to adjust the supporting angle of the arm support. When the portal crane jib support device is used, the beam mechanism is mounted at the uppermost end and is abutted against a portal crane jib to realize jib support; the lower part of the beam mechanism is hinged and connected with the telescopic supporting legs through supporting seats, the telescopic supporting legs are arranged in pairs, and the telescopic supporting legs are connected into a whole through the cross rods and the connecting rod assembly, so that the mechanical property and the integral stability of the device are improved; for the adjustment of the supporting height of the arm support, the length of the telescopic supporting legs can extend or contract according to installation requirements, so that the adjustment of the supporting height of the arm support is realized, and for the adjustment of the supporting angle of the arm support, the connecting rod assembly is provided with the screw rod mechanism, the length of the connecting rod assembly is adjusted through the fixed shaft rotation of the screw rod mechanism, so that the span between the telescopic supporting legs oppositely arranged on the side walls at the two ends of the cross beam mechanism is changed, and the adjustment of the supporting height of the arm support is realized in combination with the height adjustment of the telescopic supporting legs; secondly, flexible landing leg upper end and supporting seat swing joint after the end support operation, the back is dismantled to the connecting rod assembly, flexible landing leg can be folded and accomodate, and the space occupies for a short time, and it is convenient to transport and deposit. Therefore, compared with the prior art, the technical scheme provided by the invention can adjust the supporting angle and height of the arm support, ensure stable and reliable support during arm support assembly, has good working condition adaptability and convenient transportation and storage, can improve the production efficiency of arm support assembly connection, and reduces potential safety hazards and additional cost.

In conclusion, the beneficial effects of the invention are as follows: according to the supporting device provided by the invention, the length of the connecting rod assembly can be adjusted under the action of the screw rod mechanism, the connecting rod assembly can extend or contract in combination with the height of the telescopic supporting leg, the supporting height and the supporting height of the arm support can be adjusted according to the field requirements, the stability and the working condition adaptability are good, and the manual adjusting time is saved. The supporting device provided by the invention is of a foldable structure, can be folded or unfolded as required, the connecting rod assembly is arranged between the two telescopic supporting legs during use to improve the overall stability, and the connecting rod assembly is arranged on the side surfaces of the telescopic supporting legs after being disassembled during folding, so that the space occupation is small, and the transportation and storage are convenient. According to the support device provided by the invention, the support mechanism contacted with the arm support is made of a tough material with a large friction coefficient and pressure resistance, so that the damage to an anticorrosive coating at the bottom of the arm support can be prevented while the relative movement of the arm support and the support device is reduced, and the wear-resistant anti-slip body with a large friction coefficient is arranged at the contact part of the lower end of the telescopic supporting leg and the ground, so that the adhesion force between the support device and the ground during working is increased, and the damage to the ground can be prevented while the support device is prevented from moving. The assembling and connecting method provided by the invention determines the position and height requirements of the cantilever crane supporting point, fully ensures the safety, reduces the potential safety hazard, ensures that the cantilever crane and the supporting device do not move when the cantilever crane is assembled and connected with the like nose bridge through the detachable connection of the connecting part and the cantilever crane supporting device, reduces the alignment times, reduces the potential safety hazard and improves the field assembling efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a front view of a gantry crane boom support apparatus according to an embodiment of the present invention;

fig. 2 is a side view of a gantry crane boom support apparatus according to an embodiment of the present invention;

fig. 3 is a schematic side view of the gantry crane boom support apparatus according to the embodiment of the present invention after being folded;

FIG. 4 is a schematic side view of the beam mechanism according to an embodiment of the present invention;

fig. 5 is a schematic structural view of the anti-slip base according to the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of the screw mechanism according to the embodiment of the present invention;

fig. 7 is a schematic structural diagram of the connecting part according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of the support body with a right trapezoid cross section provided in the embodiment of the present invention;

FIG. 9 is a schematic structural diagram of the support body with the semi-elliptical cross section provided by the embodiment of the invention;

fig. 10 is a schematic view of the installation and placement positions of the arm support of the gantry crane and the support device according to the embodiment of the present invention;

fig. 11 is a schematic view illustrating an installation and connection of the connection component, the arm support and the support device according to the embodiment of the present invention;

fig. 12 is a schematic view of an installation relationship between the arm support, the trunk, and the support device according to the embodiment of the present invention.

Description of reference numerals:

a beam mechanism 1; a support base 2; a telescopic leg 3; a cross bar 4; a connecting rod assembly 5; a screw mechanism 6; a beam body 7; a positioning frame 8; a support body 9; a fixed joint 10; a first ear mount 11; a movable section 12; an anti-slip bottom plate 13; a soleplate main body 14; an anti-slip body 15; a link base 16; a first link 17; a second link 18; a third link 19; a step 20; a second ear mount 21; a screw body 22; a lock nut 23; a rotary interface 24; a connecting member 25; a base 26; a connecting frame 27.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "first," "second," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "plurality" or "a plurality" means two or more unless specifically limited otherwise.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure to be understood and read by those skilled in the art, and are not used for limiting the practical limitations of the present disclosure, so they do not have the essential technical meaning, and any modifications of the structures, changes of the ratio relationships, or adjustments of the sizes, should still fall within the scope of the technical disclosure of the present disclosure without affecting the function and the achievable purpose of the present disclosure.

As shown in fig. 1 to 12, a gantry crane boom support apparatus provided in an embodiment of the present application includes: the beam mechanism 1 is abutted against the arm support of the portal crane and is used for supporting the arm support; the supporting seats 2 are arranged on the side walls of the two ends of the beam mechanism 1; one end of the telescopic supporting leg 3 is movably connected with the supporting seat 2, the other end of the telescopic supporting leg 3 is abutted to the ground, and the telescopic supporting leg 3 is used for bearing the weight of the beam mechanism 1 and the arm support and adjusting the supporting height of the arm support in a telescopic mode; the cross rod 4 is arranged between the telescopic supporting legs 3 on the same side wall of the cross beam mechanism 1; the connecting rod assemblies 5 are arranged between the telescopic supporting legs 3 on the side walls of the two ends of the beam mechanism 1, and the connecting rod assemblies 5 and the cross rod 4 are used for connecting the telescopic supporting legs 3 into a whole; the connecting rod assemblies 5 are detachably connected, and the disassembled connecting rod assemblies 5 are placed on the side surfaces of the telescopic supporting legs 3, so that the telescopic supporting legs 3 on the two sides of the beam mechanism 1 can rotate and fold around the supporting seat 2; and the screw mechanism 6 is arranged on the connecting rod assembly 5 and used for adjusting the length of the connecting rod assembly 5, and the screw mechanism 6 is used for combining the telescopic supporting legs 3 to adjust the support angle of the arm support.

The invention provides a support device for a gantry crane boom, which specifically comprises: the beam mechanism 1 is abutted against the arm support of the portal crane and is used for supporting the arm support; the supporting seats 2 are arranged on the side walls of the two ends of the beam mechanism 1; one end of the telescopic supporting leg 3 is movably connected with the supporting seat 2, the other end of the telescopic supporting leg 3 is abutted to the ground, and the telescopic supporting leg 3 is used for bearing the weight of the beam mechanism 1 and the arm support and adjusting the supporting height of the arm support in a telescopic mode; the cross rod 4 is arranged between the telescopic legs 3 on the same side wall of the beam mechanism 1; the connecting rod assemblies 5 are arranged between the telescopic supporting legs 3 on the side walls of the two ends of the beam mechanism 1, and the connecting rod assemblies 5 and the cross rod 4 are used for connecting the telescopic supporting legs 3 into a whole; the connecting rod assemblies 5 are detachably connected, and the disassembled connecting rod assemblies 5 are placed on the side surfaces of the telescopic supporting legs 3, so that the telescopic supporting legs 3 on the two sides of the beam mechanism 1 can rotate and fold around the supporting seat 2; and the screw mechanism 6 is arranged on the connecting rod assembly 5 and used for adjusting the length of the connecting rod assembly 5, and the screw mechanism 6 is used for combining the telescopic supporting legs 3 to adjust the support angle of the arm support. In the use process of the portal crane jib support device, the beam mechanism 1 is mounted at the uppermost end and is abutted against the portal crane jib to realize jib support; the lower part of the beam mechanism 1 is hinged and connected with the telescopic supporting legs 3 through the supporting seat 2, the telescopic supporting legs 3 are arranged in pairs, and the telescopic supporting legs 3 are connected into a whole through the cross rod 4 and the connecting rod assembly 5, so that the mechanical property and the integral stability of the device are improved; for the adjustment of the supporting height of the arm support, the length of the telescopic supporting legs 3 can extend or contract according to the installation requirement, so that the adjustment of the supporting height of the arm support is realized, and for the adjustment of the supporting angle of the arm support, the screw rod mechanism 6 is arranged on the connecting rod assembly 5, the length of the connecting rod assembly 5 is adjusted through the fixed shaft rotation of the screw rod mechanism 6, so that the span between the telescopic supporting legs 3 which are oppositely arranged on the side walls at the two ends of the cross beam mechanism 1 is changed, and the adjustment of the supporting height of the arm support is realized in combination with the height adjustment of the telescopic supporting legs 3; secondly, 3 upper ends of flexible landing leg and 2 swing joint of supporting seat, after finishing supporting the operation, connecting rod assembly 5 dismantles the back, flexible landing leg 3 can fold and accomodate, and the space occupies for a short time, and it is convenient to transport and deposit.

The technical scheme of the invention is specifically described by combining the following specific embodiments:

specifically, in the embodiment of the present invention, the beam mechanism 1 includes: the supporting seats 2 are symmetrically arranged on the side walls of two ends of the cross beam body 7 in pairs; a positioning frame 8 arranged at the upper end of the cross beam body 7; a support 9 arranged in the positioning frame 8 and connected with the cross beam body 7; the upper end of the supporting body 9 is a plane and is used for being abutted against the arm support, the lower end of the supporting body is embedded in the positioning frame 8, and an interface which is fixedly installed with the cross beam body 7 is arranged along the length direction of the supporting body.

The positioning frame 8 is fixed at the upper end of the cross beam body 7 and is used for determining the position of the supporting body 9 on the cross beam body 7; the supporting body 9 is arranged in the positioning frame 8 at the upper end of the cross beam body 7 and is used for contacting with the arm support and supporting the arm support; the cross beam body 7 is of a box-shaped structure, the cross section of the cross beam body is polygonal, reinforcing rib plates are arranged in the cross section of the cross beam body, the cross section of the cross beam body is preferably of a trapezoidal structure with the upper end inclined to one side, the positioning frame 8 is of a square structure, and a supporting body 9 is embedded in the middle of the positioning frame.

Specifically, in the embodiment of the present invention, the supporting seat 2 is multiple pieces, each piece is composed of multiple ear plates and rib plates, and is specifically a U-shaped structural seat body hinged to the telescopic leg.

In particular, in the embodiment of the present invention, the support body 9 has a polygonal cross section.

In the embodiment, a supporting body 9 with a rectangular cross section is adopted, a cross beam body 7 with a right-angled trapezoidal cross section is arranged below the supporting body 9 with the rectangular cross section, the inclined surface of the right-angled trapezoidal is upward, and the supporting body 9 is connected to the upper surface of the supporting body with the rectangular cross section, so that the upper plane of the supporting body with the rectangular cross section can be stably abutted to the bottom surface of the arm support; in another embodiment of the application, the supporting body 9 is a right-angle trapezoidal section supporting body, the inclined plane of the right-angle trapezoidal section faces upwards and is directly contacted with the arm support, and a rectangular section cross beam body 7 is arranged below the supporting body to be used as a support; the semi-elliptical support body is also matched with the cross beam body 7 with the rectangular cross section, the arc surface of the support body 9 faces upwards and is contacted with the bottom surface of the arm support, and the supporting point of the arm support and the support body 9 can be changed along with the position change of the arm support on the arc surface, so that the assembly of the arm support and the nose bridge is facilitated; the support body 9 is made of a tough material with a large friction coefficient and strong bearing capacity, such as camphorwood, synthetic rubber and the like.

Specifically, in the embodiment of the present invention, the telescopic leg 3 includes: the lower end of the fixed joint 10 is provided with an opening, and the side wall of the lower end of the fixed joint 10 is provided with a pin shaft hole; the first lug seat 11 is arranged at the upper end of the fixed joint 10, and the first lug seat 11 is hinged with the supporting seat 2; the movable joint 12 is sleeved in the fixed joint 10 and used for adjusting the length of the telescopic supporting leg 3, a pin shaft hole is formed in the movable joint 12, and the position between the fixed joint 10 and the movable joint 12 is limited through a pin shaft; and an anti-skid bottom plate 13 arranged at the lower end of the movable joint 12 and used for supporting the ground.

The fixing joint 10 is a polygonal pipe fitting, preferably with a rectangular or square cross section, and pin shaft holes in the fixing joint penetrate through the other pipe surface parallel to the pipe surface, and the number of the pin shaft holes is preferably 2; the movable joint 12 is a polygonal pipe fitting, preferably with a rectangular or square cross section, a pin shaft hole in the movable joint penetrates through the other pipe surface parallel to the pipe surface, the pin shaft hole corresponds to the fixed joint 10 in position, the number of the pin shaft holes is greater than or equal to that of the pin shaft holes in the fixed joint 10, and the pitch of the holes is equal to that of the pin shaft holes in the fixed joint 10.

Specifically, in the embodiment of the present invention, the telescopic legs 3 are provided with 4 pieces, and the support seats 2 and the pins on the cross beam body 7 are used as one group by 2 pieces and symmetrically arranged on the side walls at two ends of the cross beam body 7; the connecting rod assembly 5 is connected between two telescopic leg 3 of relative setting on the lateral wall of crossbeam body 7 both ends, makes it be A font and arranges, horizontal pole 4 is connected between two adjacent telescopic leg 3 that set up on the lateral wall of crossbeam body 7 homonymy, makes it be n font and arranges.

The cross rod 4 is used for connecting two fixing sections 10 which are adjacently arranged on the side wall on the same side of the cross beam body 7, is a plurality of parts, connects the telescopic supporting legs 3 on the same side of the cross beam body 7 into a whole, improves the mechanical property and stability of the supporting device, and is of a rod piece structure; the connecting rod assembly 5 is used for connecting two fixing sections 10 which are oppositely arranged on the side walls at the two ends of the cross beam body 7, and connecting the telescopic supporting legs 3 at the side walls at the two ends of the cross beam body 7 into a whole, so that the mechanical property and the stability of the supporting device are improved, and the connecting rod assembly is also of a rod piece structure.

Specifically, in the embodiment of the present invention, the antiskid chassis 13 includes: a bottom plate main body 14 connected with the lower end of the movable joint 12; and the anti-skid body 15 is arranged below the bottom plate main body 14 and is abutted to the ground, and the anti-skid body 15 is specifically a wear-resistant rubber layer or a wood layer and is used for increasing the supporting adhesive force with the ground.

The anti-slip body 15 is arranged at the bottom of the bottom plate main body 14 and is in contact with the ground, and the anti-slip body 15 is made of rubber or wood materials with large friction coefficient and wear resistance and used for increasing the adhesive force between the supporting device and the ground during working and preventing movement.

Specifically, in the embodiment of the present invention, the link assembly 5 includes: the connecting rod seats 16 are symmetrically arranged on the inner side walls of the two opposite fixed joints 10; the first connecting rod 17, the second connecting rod 18 and the third connecting rod 19 are arranged between the connecting rod seats 16 in sequence from top to bottom; the first connecting rod 17, the second connecting rod 18 and the third connecting rod 19 are detachably connected with the connecting rod seat 16 through pin shafts, the first connecting rod, the second connecting rod and the third connecting rod are arranged in parallel, and the length of rod bodies of the three connecting rods is sequentially increased; the first connecting rod 17, the second connecting rod 18 and the third connecting rod 19 comprise two rod bodies; the two rod bodies are symmetrically arranged, one end of each rod body is connected with the connecting rod seat 16, the other end of each rod body is provided with an end plate, and internal threads are tapped on the end plates.

In the embodiment of the present invention, the connecting rod base 16 is a U-shaped base body composed of an ear plate with a pin shaft hole, a bottom plate and a rib plate, and is detachably connected to the connecting rod assembly 5 through a pin shaft; first connecting rod 17, second connecting rod 18 and third connecting rod 19 comprise pipe fitting and connection otic placode, connect the otic placode to set up in pipe fitting one end, with connecting rod seat 16 can dismantle the connection, and the pipe fitting other end sets up the end plate, and the internal screw thread that sets up on two end plates that same connecting rod symmetry each other set up revolves to the same or opposite: when the screw threads at the two ends of the screw mechanism 6 are opposite in turning direction, the turning directions of the internal threads arranged on the two symmetrically arranged end plates are the same; when the screw threads at the two ends of the screw mechanism 6 have the same rotating direction, the rotating directions of the internal threads arranged on the two symmetrically arranged end plates are opposite.

Specifically, in an embodiment of the present invention, the gantry crane boom support apparatus further includes: the steps 20 are arranged on the outer side wall of the fixed joint 10 side by side, and the steps 20 are of U-shaped rod body structures, are made of pipe fittings or rod pieces with circular cross sections in a bending mode, and are used for operators to crawl up and down; set up in with connecting rod seat 16 vertically lateral surface on the fixed knot 10, and the second ear seat 21 that is close to a connecting rod seat 16 below of beam mechanism 1 end on the fixed knot 10, second ear seat 21 is used for this strutting arrangement and is in place through the round pin axle when telescopic leg 3 rotates folding around supporting seat 2 on beam mechanism 1 first connecting rod 17, second connecting rod 18 and third connecting rod 19.

In the embodiment of the present invention, the second ear seat 21 is specifically a U-shaped plate structure, and after the supporting operation is finished, the link assembly 5 is placed in the second ear seat 21 after being detached, and the telescopic legs 3 are folded to fully utilize the space.

Specifically, in the embodiment of the present invention, the screw mechanism 6 includes: a screw body 22 disposed between the link assemblies 5; two ends of the screw rod main body 22 are respectively connected with two rod bodies which are symmetrically arranged, the thread turning directions of the two ends of the screw rod main body are opposite, and the two ends of the screw rod main body are in thread connection with the end plates at the end parts of the rod bodies; a rotary interface 24 arranged in the middle of the screw main body 22 and used for screwing; and the locking nuts 23 are arranged on the thread sections at the two ends of the screw rod main body 22 and abut against or are far away from the end plate end surface on the rod body, and the locking nuts 23 are used for locking the length of the connecting rod assembly 5 or adjusting the length of the connecting rod assembly.

Specifically, in an embodiment of the present invention, the gantry crane boom support apparatus further includes: the connecting component 25 is arranged on the cross beam body 7 and used for fixing the position of the arm support; the connecting member 25 includes: a connecting frame 27 connected to the cross member body 7; a base 26 with one end connected with the connecting frame 27 and the other end connected with the arm support, and a connecting interface is arranged on the base.

In the embodiment of the present invention, the connecting component 25 is configured to fix the position of the arm support after the arm support determines the supporting position; the base 26 is a plate, and is connected to the arm support through the connection interface or welded to the arm support, and the section of the connection frame 27 is a polygonal rod or a beam, preferably a box-shaped structural rod.

The invention also provides a method for assembling and connecting the gantry crane arm support and the trunk bridge, which takes the gantry crane arm support device as a tool and comprises the following steps:

s1, device adjustment: unfolding the supporting device and placing the supporting device on a flat ground, and adjusting the telescopic supporting legs 3 and the connecting rod assembly 5 to determine the supporting height and the supporting angle of the arm support;

the flat ground area meets the occupied area of the assembled cantilever crane and the trunk like nose bridge and the area required by the operation of the hoisted crane;

s2, hoisting the arm support: a crane is used for hoisting an arm support and placing the arm support on the supporting device, so that the distance H between the joint of the arm support and the elephant nose bridge and the ground is 4-6 m, the distance between a supporting point B of the supporting device in the length direction of the arm support and a starting point A of the change of the section of the arm support is more than 0.5 m, and the moment generated by the center of gravity of the arm support from the supporting point B is not less than 1.3 times of the moment generated by the center of gravity of the arm support from the supporting point B after the elephant nose bridge is assembled;

s3, arm support fixing: welding bases 26 in the connecting part 25 on two sides of the supporting point of the arm support and the supporting device, and then connecting one end of a connecting frame 27 in the connecting part 25 with the bases 26 and the other end with the cross beam body 7 to integrally connect the cross beam mechanism 1 and the arm support;

s4, hoisting like a nose bridge: hoisting a trunk of a crane to align with a connector on the cantilever crane, and assembling a pin shaft connector in the connector; and then after the assembly of the gantry crane turntable column assembly and the cylindrical gantry is completed, the connecting frame 27 is detached, and the arm support and the trunk bridge are lifted to complete the assembly connection of the arm support and the trunk bridge.

From the above, the invention provides the assembling and connecting method for the jib and the elephant nose bridge, the jib supporting device and the assembling and connecting method, which have the advantages of simple structure, good working condition adaptability, small occupied space and convenience in transportation and storage, and are high in efficiency and safety risk and solve the problem of additional cost increase caused by large overall dimension of the auxiliary supporting piece when the jib of the existing four-bar linkage gantry crane is assembled and connected with the elephant nose bridge, so that the assembling and connecting production efficiency is improved, and the safety risk and the additional cost are reduced. In the device, the beam mechanism 1 is arranged at the uppermost end, wherein a support body 9 is abutted against an arm support of a portal crane to realize arm support, and a beam body 7 is arranged below the support body 9 to serve as a pressure-bearing structure; the telescopic supporting legs 3 are hinged with the supporting seat 2 by utilizing the first lug seats 11 at the upper ends, the telescopic supporting legs 3 are arranged in pairs, the cross rod 4 is arranged between two adjacent telescopic supporting legs 3 on the side wall at the same side of the cross beam body 7, the connecting rod assembly 5 is arranged between two adjacent telescopic supporting legs 3 on the side wall at the two ends of the cross beam body 7, and the telescopic supporting legs 3 are connected into a whole through the cross rod 4 and the connecting rod assembly 5, so that the mechanical property and the integral stability of the device are improved; for the adjustment of the supporting height of the arm support, the telescopic supporting legs 3 are provided with a fixed joint 10 and/or a movable joint 12 according to the installation requirement, the movable joint 12 can be extended and retracted in the fixed joint 10, so that the length of the movable joint can be extended or retracted, and the adjustment of the supporting height of the arm support is realized, while for the adjustment of the supporting angle of the arm support, the connecting rod assembly 5 is provided with a screw rod mechanism 6, the fixed shaft of the screw rod main body 22 rotates, and the length of the connecting rod assembly 5 can be adjusted or locked by combining a locking nut 23, so that the span between the telescopic supporting legs 3 which are oppositely arranged on the side walls at two ends of the cross beam mechanism 1 is changed, and the height adjustment of the telescopic supporting legs 3 is combined, and the adjustment of the supporting height of the arm support is realized; secondly, 3 upper ends of telescopic leg and 2 swing joint of supporting seat, after the operation is supported in the end, first connecting rod 17, second connecting rod 18 and the 19 dismantlements back of third connecting rod in the connecting rod assembly 5, can place in the second ear seat 21, make telescopic leg 3 can fold and accomodate, and the space occupies for a short time, and it is convenient to transport and deposit. Therefore, compared with the prior art, the technical scheme provided by the invention can adjust the supporting angle and height of the arm support, ensure stable and reliable support during arm support assembly, has good working condition adaptability and convenient transportation and storage, can improve the production efficiency of arm support assembly connection, and reduces potential safety hazards and additional cost.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to 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 boom support apparatus, comprising:

the beam mechanism is abutted against the arm support of the gantry crane and is used for supporting the arm support;

the supporting seats are arranged on the side walls of the two ends of the cross beam mechanism;

one end of the telescopic supporting leg is movably connected with the supporting seat, the other end of the telescopic supporting leg is abutted against the ground, and the telescopic supporting leg is used for bearing the weight of the beam mechanism and the arm support and adjusting the supporting height of the arm support in a telescopic mode;

the cross rod is arranged between the telescopic supporting legs on the same side wall of the cross beam mechanism;

the connecting rod assemblies are arranged between the telescopic supporting legs on the side walls of the two ends of the cross beam mechanism, and the connecting rod assemblies and the cross rods are used for connecting the telescopic supporting legs into a whole;

the connecting rod assemblies are detachably connected, and the disassembled connecting rod assemblies are placed on the side surfaces of the telescopic supporting legs, so that the telescopic supporting legs on the two sides of the beam mechanism can rotate around the supporting seat and be folded;

and the screw rod mechanism is arranged on the connecting rod assembly and used for adjusting the length of the connecting rod assembly, and the screw rod mechanism is used for combining the telescopic supporting legs to adjust the supporting angle of the arm support.

2. The gantry crane jib support apparatus of claim 1 wherein said beam mechanism comprises:

the supporting seats are symmetrically arranged on the side walls of the two ends of the cross beam body in pairs;

the positioning frame is arranged at the upper end of the cross beam body;

the supporting body is arranged in the positioning frame and connected to the cross beam body;

the upper end of the supporting body is a plane and is used for being abutted against the arm support, the lower end of the supporting body is embedded in the positioning frame, and an interface which is fixedly installed with the cross beam body is arranged along the length direction of the supporting body.

3. The gantry crane jib support apparatus of claim 2 wherein said telescoping legs comprise:

the lower end of the fixed joint is provided with an opening, and the side wall of the lower end of the fixed joint is provided with a pin shaft hole;

the first lug seat is arranged at the upper end of the fixed joint and is hinged with the supporting seat;

the movable joint is sleeved in the fixed joint and used for adjusting the length of the telescopic supporting leg, a pin shaft hole is formed in the movable joint, and the position between the fixed joint and the movable joint is limited through a pin shaft;

and the anti-skid bottom plate is arranged at the lower end of the movable joint and used for ground support.

4. The gantry crane jib support device according to claim 3, wherein the telescopic legs are provided with 4 pieces, and are symmetrically arranged on the side walls at two ends of the crossbeam body by taking 2 pieces as a group through the support seats and the pins on the crossbeam body;

the connecting rod assembly is connected between two opposite telescopic support legs on the side walls at the two ends of the cross beam body, so that the telescopic support legs are arranged in an A shape, and the cross rod is connected between two adjacent telescopic support legs on the side walls at the same side of the cross beam body, so that the telescopic support legs are arranged in an n shape.

5. The gantry crane jib support apparatus of claim 3, wherein said skid resistant floor comprises:

the bottom plate main body is connected with the lower end of the movable joint;

the anti-skid body is arranged below the bottom plate main body and abutted to the ground, and the anti-skid body is specifically a wear-resistant rubber layer or a wood layer and is used for increasing the supporting adhesive force with the ground.

6. The gantry crane jib support apparatus of claim 3 wherein said linkage assembly comprises:

the connecting rod seats are symmetrically arranged on the inner side walls of the two opposite fixed joints;

the first connecting rod, the second connecting rod and the third connecting rod are arranged between the connecting rod seats in sequence from top to bottom;

the first connecting rod, the second connecting rod and the third connecting rod are detachably connected with the connecting rod seat through pin shafts and are arranged in parallel, and the length of a rod body of each connecting rod is sequentially increased;

the first connecting rod, the second connecting rod and the third connecting rod comprise two rod bodies;

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

7. The gantry crane boom support apparatus of claim 6, further comprising:

the steps are arranged on the outer side wall of the fixed joint side by side, are of U-shaped rod body structures, are made by bending pipe fittings or rod pieces with circular cross sections and are used for operators to crawl up and down;

set up in with connecting rod seat vertically lateral surface on the fixed knot, and the second ear seat of a connecting rod seat below that is close to crossbeam mechanism end on the fixed knot, the second ear seat is used for this strutting arrangement telescopic leg places through the round pin axle when rotating folding around the last supporting seat of crossbeam mechanism first connecting rod, second connecting rod and third connecting rod.

8. The gantry crane boom support apparatus of claim 6, wherein the screw mechanism comprises:

the screw rod main body is arranged between the connecting rod assemblies;

two ends of the screw rod main body are respectively connected with two rod bodies which are symmetrically arranged, the thread turning directions of the two ends of the screw rod main body are opposite, and the two ends of the screw rod main body are in thread connection with the end plates at the end parts of the rod bodies;

the rotary interface is arranged in the middle of the screw rod main body and used for screwing;

and the locking nuts are arranged on the thread sections at the two ends of the screw rod main body and abut against or are far away from the end plate end surface on the rod body, and the locking nuts are used for locking the length of the connecting rod assembly or adjusting the length of the connecting rod assembly.

9. The gantry crane boom support apparatus of claim 2, further comprising:

the connecting component is arranged on the cross beam body and used for fixing the position of the arm support;

the connecting member includes: the connecting frame is connected with the cross beam body; one end of the base is connected with the connecting frame, the other end of the base is connected with the arm support, and a connecting interface is arranged on the base.

10. A method for assembling and connecting a gantry crane boom and a bridge of a trunk, which is characterized in that the gantry crane boom support device of any one of claims 1 to 9 is used as a tool, and comprises the following steps:

s1, device adjustment: unfolding the supporting device, placing the supporting device on a flat ground, and adjusting the telescopic supporting legs and the connecting rod assembly to determine the supporting height and the supporting angle of the arm support;

s2, hoisting the arm support: a crane is used for hoisting an arm support and placing the arm support on the supporting device, so that the distance H between the connecting part of the arm support and the trunk of the elephant nose is 4-6 m from the ground, the distance between a supporting point of the supporting device on the length direction of the arm support and the starting point of the change of the section of the arm support is more than 0.5 m, and the moment generated by the distance between the gravity center of the arm support and the supporting point is not less than 1.3 times of the moment between the gravity center of the trunk of the elephant nose and the supporting point after the trunk of the elephant nose is assembled;

s3, arm support fixing: welding bases in the connecting parts on two sides of the supporting points of the arm support and the supporting device, and then connecting one end of a connecting frame in the connecting parts with the bases and connecting the other end of the connecting frame with the cross beam body to integrally connect the cross beam mechanism and the arm support;

s4, hoisting like a nose bridge: hoisting a trunk of a crane to align with a connector on the cantilever crane, and assembling a pin shaft connector in the connector; and then after the assembly of the gantry crane turntable column assembly and the cylindrical gantry is completed, the connecting frame is detached, and the arm support and the trunk bridge are hoisted to complete the assembly and the connection of the arm support and the trunk bridge.

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