CN210558979U

CN210558979U - Gantry crane device for bridge construction

Info

Publication number: CN210558979U
Application number: CN201921262964.8U
Authority: CN
Inventors: 马海龙; 邵珠令
Original assignee: Second Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Current assignee: Second Construction Co Ltd of China Construction Eighth Engineering Division Co Ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-05-19
Anticipated expiration: 2029-08-06

Abstract

The utility model relates to a relevant technical field of bridge construction specifically is a portal crane device for bridge construction usefulness, including the support frame, the support frame spiro union is on the surface of mount pad, and the skin weld of support frame has the reinforcing plate, and the inside of mount pad is equipped with the mounting groove, and the sliding surface of grip block is connected with the butt plate, and the butt plate butt joint is in the inside of butt joint groove, and the bull stick spiro union is in the inside of lifting hook subassembly, and beneficial effect is: when hanging a general piece and handling, rotate the lifting hook to the lower extreme, then will hang the piece and place the surface at the lifting hook, and to hanging a piece and tentatively fixing, accomplish the tentatively fixed back that hangs a piece, the enhancement frame passes through the bull stick and rotates on the surface of lifting hook, the enhancement frame extrusion is on the surface of hanging a piece, then fix the position of enhancement frame through fixed screw, the completion is to hanging the secondary spacing of piece fixed, multiple spacing fixed knot constructs's setting, fixed effect is better, the handling high quality, and is suitable for promoting.

Description

Gantry crane device for bridge construction

Technical Field

The utility model relates to a relevant technical field of bridge construction specifically is a gantry crane device for bridge construction usefulness.

Background

The portal crane is a deformation of the bridge crane, called portal crane, and is mainly used for loading and unloading operations of outdoor goods yard, stock yard goods and bulk goods, the metal structure of the portal crane is like a portal frame, two support legs are installed under a bearing main beam, the two ends of the main beam can be provided with overhanging cantilever beams, the portal crane has the characteristics of high site utilization rate, large operation range, wide application range, strong universality and the like, the portal crane is widely used when in construction of port goods yard and bridge, but the following defects still exist in the practical use of the general portal crane:

1. the gantry crane is generally supported by the supporting legs, other supporting structures do not exist, the structural strength is low, the supporting legs are partially screwed and fixed on the surface of the mounting base, the fixing effect is poor due to a single screwing and fixing mode, the use quality of the gantry crane cannot be ensured, and when the gantry crane is used, the gantry crane is easy to collapse due to the action of external force and the like, the use is influenced, certain dangerousness exists, and the use effect is poor;

2. the common gantry crane realizes hoisting of a heavy object by using a lifting hook, but the lifting hook is not suitable for a round tubular heavy object, and when the round tubular heavy object is hoisted, the round tubular heavy object needs to be bound by a rope firstly and then is hoisted on the lifting hook to realize hoisting, so that the gantry crane is very inconvenient to operate, consumes long time, has low hoisting stability and has great potential safety hazard;

3. when hoisting the heavy object through the lifting hook, generally directly hoist the heavy object on the surface of lifting hook, then carry out preliminary fixed to the heavy object of hoist and mount, at the in-process of transferring the heavy object, the heavy object breaks away from with the lifting hook emergence easily, and the quality of handling is relatively poor, and the security is lower, does not have secondary fixed knot to construct, influences the stability of heavy object handling.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gantry crane device for bridge construction usefulness to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a gantry crane device for bridge construction comprises a support frame, wherein the support frame is in threaded connection with the surface of an installation seat, a reinforcing plate is welded on the surface of the support frame, an installation groove is formed in the installation seat, the support frame is in threaded connection with the inside of the installation groove, a connecting plate is welded on the surface of the support frame, a fixing frame is in threaded connection with the surface of the connecting plate, fixing holes are formed in the connecting plate and the fixing frame, a fixing screw is in threaded connection with the inside of the fixing hole, a gantry hanger is welded on the surface of the support frame, a hoisting assembly is connected on the surface of the gantry hanger in a sliding mode, a rotating groove is formed in the hoisting assembly, a rotating rod is rotatably connected in the rotating groove, an installation sleeve is welded on the surface of the rotating rod, a positioning sliding groove is formed in the installation sleeve, a clamping plate is slidably connected in, the utility model discloses a lifting hook assembly, including mounting sleeve, clamping plate, sliding plate, reinforcing frame, runner, bull stick, swivel joint, the mounting sleeve is connected with the mounting sleeve, the sliding plate is connected with the butt joint frame to the sliding plate's of butt joint frame, the butt joint frame's inside is equipped with the butt joint groove, and the sliding plate sliding connection has the butt joint board, and the butt joint board butt joint has the sliding plate with the surface of butt joint board all to weld, and the sliding plate sliding connection has the sliding groove in the inside of sliding groove, and the skin weld of mounting sleeve has the lifting hook subassembly, the surperf.

Preferably, the support frame is provided with two sets ofly, and every group support frame includes two sets of backup pads, and the backup pad includes that a set of support links board and a set of fixed plate, and the reinforcing plate is provided with the multiunit, and the welding of multiunit reinforcing plate is at the inboard surface that two sets of supports link board, and multiunit reinforcing plate connects formation multiunit triangle-shaped structure.

Preferably, the inside upper end of mount pad is equipped with two sets of mounting grooves, and the inside side of mount pad is equipped with two sets of mounting grooves, and the connecting plate is provided with the multiunit, and the multiunit connecting plate welding is on the surface of fixed plate, and the mount comprises a set of regulating plate and multiunit limiting plate, and the welding of multiunit limiting plate is on the surface of regulating plate, and the multiunit limiting plate passes through the mounting groove extrusion connection of mount pad side on the surface of multiunit connecting plate, and the connecting plate all is equipped with two sets of fixed orificess with the inside of.

Preferably, the hoist and mount subassembly comprises a set of "concave" word shaped plate and two sets of circular frame structure, and the protruding part surface of two sets of circular frame structure welds respectively on a set of protruding part surface of "concave" word shaped plate, and the dwang is cylindrical shaft-like structure, and the rotation groove sets up in circular frame structure's inside, and the dwang rotates inside the sunk part of connecting at two sets of circular frame structure.

Preferably, the installation cover is hollow cylindrical structure, and the dwang welding is at the hollow part inner wall of installation cover, and the grip block is provided with two sets ofly, and the grip block includes a set of location slider and a set of "concave" font board, and the location slider welding is at the inboard protruding part surface of "concave" font board, and location slider sliding connection is in the inside of location spout, and the sunk part of "concave" font board is hollow arc structure.

Preferably, the butt joint frame is a rectangular frame structure, the butt joint groove is formed in a concave portion of the butt joint frame, the butt joint plate is a rectangular plate structure, the adjusting sliding groove is formed in a protruding portion of the outer side of the concave-shaped plate of the clamping plate, the butt joint frame and the butt joint plate are connected inside the adjusting sliding groove in a sliding mode through the sliding plate, the butt joint frame and the butt joint plate are both provided with fixing holes, and the fixing holes are screwed with the fixing screws.

Preferably, the lifting hook subassembly includes lifting hook and lifting hook frame, and the lifting hook frame welding is on the surface of installation cover, and the strengthening frame is "concave" font platelike structure, and the bull stick welding is at the outstanding part inner wall of "concave" font shaped plate, and the inside of lifting hook frame is equipped with the turn trough, and the bull stick rotates the inside of connecting at the turn trough, and lifting hook frame all is equipped with the multiunit fixed orifices with the inside of bull stick, and the inside spiro union of fixed orifices has clamping screw.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses the structure sets up rationally, and is functional strong, has following advantage:

1. when the gantry crane is installed, the support frame is placed in the installation groove in the upper end of the interior of the installation seat, the support frame is limited preliminarily, then the fixing frame is extruded on the surfaces of the multiple groups of connecting plates through the installation groove in the side end, a multi-level limiting structure is formed, finally, the fixing screw rods are screwed in the multiple groups of fixing holes in the connecting plates and the fixing frame, the support frame and the installation seat are fixed in a screwed mode, the multiple fixing structure is good in fixing effect, multiple groups of reinforcing plates are welded on the inner side surface of the support frame, multiple groups of triangular structures are formed by the multiple groups of reinforcing plates, structural stability is improved;

2. when a tubular hanging piece is hoisted, the clamping plates are rotated to the lower ends through the rotating rods, then the two groups of clamping plates slide towards the inner ends, so that the tubular hanging piece is clamped and fixed on the inner walls of the two groups of clamping plates, the stability of the tubular hanging piece during hoisting is improved, the hoisting safety is further ensured, meanwhile, the butt joint frame and the butt joint plate slide towards the inner ends, so that the butt joint plates are in butt joint in the butt joint grooves, then the tubular hanging piece is fixed through the fixing screws in a threaded manner, and the tubular hanging piece is supported through the butt joint frame and the butt joint plate, so that the stability during hoisting is further improved, and the using effect is good;

3. when hanging a general piece and handling, rotate the lifting hook to the lower extreme, then will hang the piece and place the surface at the lifting hook, and to hanging a piece and tentatively fixing, accomplish the tentatively fixed back that hangs a piece, the enhancement frame passes through the bull stick and rotates on the surface of lifting hook, the enhancement frame extrusion is on the surface of hanging a piece, then fix the position of enhancement frame through fixed screw, the completion is to hanging the secondary spacing of piece fixed, multiple spacing fixed knot constructs's setting, fixed effect is better, the handling high quality, and is suitable for promoting.

Drawings

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

FIG. 2 is a left side view of the structure of the present invention;

FIG. 3 is a schematic view of the structure of the mounting base of the present invention;

FIG. 4 is a schematic view of the explosion structure of the supporting frame and the fixing frame of the present invention;

FIG. 5 is a schematic view of the connection structure between the hoisting assembly and the rotating rod of the present invention;

FIG. 6 is an exploded view of the clamping plate and the docking cradle of the present invention;

FIG. 7 is an enlarged view of the structure at A in FIG. 5;

FIG. 8 is a schematic view of the connection structure of the hook assembly and the reinforcing frame of the present invention;

fig. 9 is a schematic view of the connection structure of the hook assembly and the rotating rod of the present invention.

In the figure: the device comprises a support frame 1, a mounting seat 2, a reinforcing plate 3, a mounting groove 4, a connecting plate 5, a fixing frame 6, a fixing hole 7, a fixing screw 8, a gantry hanger 9, a hoisting assembly 10, a rotating groove 11, a rotating rod 12, a mounting sleeve 13, a positioning sliding groove 14, a clamping plate 15, a tubular hoisting piece 16, a butt joint frame 17, a butt joint groove 18, a butt joint plate 19, a sliding plate 20, a sliding groove 21, a hoisting hook assembly 22, a reinforcing frame 23 and a rotating rod 24.

Detailed Description

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

Referring to fig. 1 to 9, the present invention provides a technical solution: a gantry crane device for bridge construction comprises a support frame 1, wherein the support frame 1 is in threaded connection with the surface of a mounting seat 2, reinforcing plates 3 are welded on the surface of the support frame 1, the support frame 1 is provided with two groups, each group of support frame 1 comprises two groups of support plates, each group of support plates comprises one group of support connecting plates and one group of fixing plates, the reinforcing plates 3 are provided with multiple groups, the multiple groups of reinforcing plates 3 are welded on the inner side surfaces of the two groups of support connecting plates, the multiple groups of reinforcing plates 3 are connected to form multiple groups of triangular structures, the multiple groups of reinforcing plates 3 are welded on the inner side surfaces of the two groups of support connecting plates, the structural strength of the support frame 1 is improved, the structural strength of a gantry crane is further improved, meanwhile, the multiple groups of reinforcing plates 3 form multiple groups of triangular structures, the;

referring to fig. 2, 3 and 4, a mounting groove 4 is arranged inside a mounting seat 2, a support frame 1 is screwed inside the mounting groove 4, a connecting plate 5 is welded on the surface of the support frame 1, a fixing frame 6 is screwed on the surface of the connecting plate 5, fixing holes 7 are arranged inside the connecting plate 5 and the fixing frame 6, a fixing screw 8 is screwed inside the fixing hole 7, a gantry hanger 9 is welded on the surface of the support frame 1, two sets of mounting grooves 4 are arranged at the upper end inside the mounting seat 2, two sets of mounting grooves 4 are arranged at the side end inside the mounting seat 2, a plurality of sets of connecting plates 5 are arranged on the connecting plate 5, the plurality of sets of connecting plates 5 are welded on the surface of the fixing plate, the fixing frame 6 is composed of a set of adjusting plates and a plurality of sets of limiting plates, the plurality of sets of limiting plates are welded on the surfaces of adjusting, the fixing screw rods 8 are screwed in the multiple groups of fixing holes 7, when the support frame 1 is installed, the support frame 1 is placed in the installation groove 4 at the upper end in the installation seat 2, then the fixing frame 6 is extruded on the surfaces of the multiple groups of connecting plates 5 from the installation groove 4 at the side end, then the connecting plates 5 and the fixing frame 6 are screwed and fixed through the fixing screw rods 8, the multi-stage limiting fixing of the support frame 1 is completed, the multiple limiting fixing structures are arranged, the fixing effect is better, the structural strength is improved, and the use quality of the gantry crane is further guaranteed;

referring to fig. 5, a hoisting assembly 10 is slidably connected to the surface of the gantry hanger 9, a rotating groove 11 is arranged inside the hoisting assembly 10, a rotating rod 12 is rotatably connected inside the rotating groove 11, the hoisting assembly 10 is composed of a group of concave-shaped plates and two groups of circular frame structures, the surfaces of the protruding parts of the two groups of circular frame structures are respectively welded to the surfaces of the protruding parts of the concave-shaped plates, the rotating rod 12 is in a cylindrical rod-shaped structure, the rotating groove 11 is arranged inside the circular frame structure, the rotating rod 12 is rotatably connected inside the concave parts of the two groups of circular frame structures, the rotating rod 12 rotates inside the rotating groove 11, the clamping plate 15 and the hook assembly 22 are fixed on the surface of the rotating rod 12 through a mounting sleeve 13, when hoisting pieces of different types are needed, only the clamping plate 15 or the hook assembly 22 needs to be rotated to the lower end, the structure is, the lifting device is convenient for lifting different types of lifting pieces, has a wide application range and meets different use requirements;

referring to fig. 5, a mounting sleeve 13 is welded on the surface of a rotating rod 12, a positioning chute 14 is arranged inside the mounting sleeve 13, a clamping plate 15 is slidably connected inside the positioning chute 14, a tubular hanger 16 is clamped inside the clamping plate 15, the mounting sleeve 13 is of a hollow cylindrical structure, the rotating rod 12 is welded on the inner wall of the hollow part of the mounting sleeve 13, two groups of clamping plates 15 are arranged, each clamping plate 15 comprises a group of positioning sliders and a group of concave plates, the positioning sliders are welded on the surfaces of the protruding parts on the inner sides of the concave plates, the positioning sliders are slidably connected inside the positioning chute 14, the concave parts of the concave plates are of a hollow arc-shaped structure, when the tubular hanger 16 is lifted, the two groups of clamping plates 15 slide inwards, the two groups of clamping plates 15 slide on the surface of the mounting sleeve 13 through the positioning sliders, and finally the tubular hanger 16 is clamped and fixed on the inner walls of the two, the tubular lifting piece 16 is not easy to shake during lifting, so that the lifting stability of the tubular lifting piece 16 is improved, and the lifting efficiency and safety are further ensured;

referring to fig. 5, 6 and 7, a docking bracket 17 is slidably connected to the surface of the clamping plate 15, a docking groove 18 is formed in the docking bracket 17, a docking plate 19 is slidably connected to the surface of the clamping plate 15, the docking plate 19 is docked in the docking groove 18, a sliding plate 20 is welded to the surfaces of the docking bracket 17 and the docking plate 19, a sliding groove 21 is formed in the clamping plate 15, the sliding plate 20 is slidably connected to the interior of the sliding groove 21, the docking bracket 17 is in a rectangular frame structure, the docking groove 18 is formed in a concave portion of the docking bracket 17, the docking plate 19 is in a rectangular plate structure, an adjusting sliding groove is formed in a protruding portion of the outer side of the concave plate of the clamping plate 15, the docking bracket 17 and the docking plate 19 are slidably connected to the inside of the adjusting sliding groove through the sliding plate 20, fixing holes 7 are formed in the docking bracket 17 and the docking plate 19, and fixing screws 8 are screwed in, after clamping and fixing the tubular hanger 16, the butt joint frame 17 and the butt joint plate 19 slide inwards through the sliding plate 20, finally the butt joint plate 19 is in butt joint with the inside of the butt joint groove 18 on the butt joint frame 17, then the fixing screw 8 is fixed in the fixing hole 7 on the butt joint frame 17 and the butt joint plate 19, the butt joint frame 17 and the butt joint plate 19 are fixed, in the process of hoisting the tubular hanger 16, the lower surface of the tubular hanger 16 is supported through the butt joint frame 17 and the butt joint plate 19, the hoisting stability of the tubular hanger 16 is further improved, and the using effect is good;

referring to fig. 5, 8 and 9, a hook assembly 22 is welded on the surface of the mounting sleeve 13, a reinforcing frame 23 is rotatably connected on the surface of the hook assembly 22, a rotating rod 24 is welded on the surface of the reinforcing frame 23, the rotating rod 24 is rotatably connected inside the hook assembly 22, the rotating rod 24 is screwed inside the hook assembly 22, the hook assembly 22 comprises a hook and a hook frame, the hook frame is welded on the surface of the mounting sleeve 13, the reinforcing frame 23 is in a concave plate structure, the rotating rod 24 is welded on the inner wall of the protruding part of the concave plate, a rotating groove is arranged inside the hook frame, the rotating rod 24 is rotatably connected inside the rotating groove, a plurality of groups of fixing holes 7 are arranged inside the hook frame and the rotating rod 24, fixing screws 8 are screwed inside the fixing holes 7, when a general hanging part is hoisted, the hanging part is placed on the surface of the hook, then the hanging part is preliminarily fixed, and after preliminary fixing of the hanging part is completed, the strengthening frame 23 rotates on the surface of the lifting hook frame through the rotating rod 24, so that the strengthening frame 23 is extruded on the surface of a hanging piece, then the strengthening frame 23 is fixed in position through the fixing screw rod 8, the secondary fixing of the hanging piece is completed, the multiple limiting fixing structures are arranged, the fixing effect is better, the transferring quality is high, and the safety is high.

The working principle is as follows: before use, the gantry hanger 9 is fixed on the inner walls of the upper ends of the two groups of support frames 1, the support frames 1 are placed in the mounting grooves 4 of the upper ends of the mounting bases 2, then the fixing frames 6 slide to the surfaces of the multiple groups of connecting plates 5 on the support frames 1 through the mounting grooves 4 of the side ends of the mounting bases 2, the multiple groups of connecting plates 5 are subjected to multiple limiting fixing through the fixing frames 6, then the fixing screws 8 are screwed in the multiple groups of connecting plates 5 and the fixing holes 7 on the fixing frames 6, the mounting and fixing of the support frames 1 are completed, the multiple limiting fixing structures are arranged, the structural strength is high, the use safety of the gantry crane is improved, the use quality is further improved, meanwhile, the multiple groups of reinforcing plates 3 are welded on the inner walls of the support frames 1 and form multiple groups of triangular structures, the stability is improved while the structure of the gantry crane is reinforced, when the tubular hanger 16 needs to be hoisted and transported, the rotating rod 12 is rotated to rotate the clamping plates 15 to the lower end, then the two groups of clamping plates 15 are slid towards the inner end to clamp and fix the tubular hanger 16, the structure is simple, time and labor are saved, in the process of hoisting the tubular hanger 16, the tubular hanger 16 is not easy to shake, the hoisting stability of the tubular hanger 16 is improved, the hoisting safety of the tubular hanger 16 is further improved, then the butt-joint frame 17 and the butt-joint plate 19 slide towards the inner side through the sliding plate 20, the butt-joint plate 19 is butt-jointed in the butt-joint groove 18, then the butt-joint frame 17 and the butt-joint plate 19 are fixed in a threaded manner through the fixing screw 8, the lower surface of the tubular hanger 16 in the hoisting process is supported through the butt-joint frame 17 and the butt-joint plate 19, the hoisting stability is further ensured, and the using effect is better, when needs carry out the handling to other types of hanging, with hanging hook component 22 rotation to lower extreme, then will hang the piece and place on hanging hook component 22's surface and fix, after the completion is to hanging the preliminary fixed back of piece, the inside rotation of bull stick 24 overhead gage on hanging hook component 22, through rotating stiffener 23, make stiffener 23 extrusion hang a surface after fixed, then carry out the spiro union through fixing screw 8 to the position of stiffener 23 fixed, secondary fixed knot structure has been formed, the setting of multiple spacing fixed knot structure, the quality of handling has been guaranteed, security when having improved the handling, excellent in use effect, and is suitable for promoting.

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

Claims

1. The utility model provides a gantry crane device for bridge construction usefulness, includes support frame (1), its characterized in that: the support frame (1) is in threaded connection with the surface of the mounting seat (2), the reinforcing plate (3) is welded on the surface of the support frame (1), a mounting groove (4) is formed in the mounting seat (2), the support frame (1) is in threaded connection with the inside of the mounting groove (4), a connecting plate (5) is welded on the surface of the support frame (1), a fixing frame (6) is in threaded connection with the surface of the connecting plate (5), fixing holes (7) are formed in the connecting plate (5) and the fixing frame (6), a fixing screw (8) is in threaded connection with the inside of the fixing hole (7), a gantry hanger (9) is welded on the surface of the support frame (1), a hoisting assembly (10) is connected on the surface of the gantry hanger (9) in a sliding mode, a rotating groove (11) is formed in the hoisting assembly (10), and a rotating rod (12) is rotatably connected, the surface welding of dwang (12) has installation cover (13), location spout (14) are equipped with in installation cover (13), the inside sliding connection of location spout (14) has grip block (15), the inside joint of grip block (15) has tubulose to hang piece (16), the sliding connection in surface of grip block (15) has butt joint frame (17), the inside of butt joint frame (17) is equipped with butt joint groove (18), the sliding connection in surface of grip block (15) has butt joint board (19), butt joint board (19) butt joint is in the inside of butt joint groove (18), butt joint frame (17) and butt joint board (19) surface all weld sliding plate (20), the inside of grip block (15) is equipped with sliding tray (21), sliding plate (20) sliding connection is in the inside of sliding tray (21), the welding of installation cover (13) has hook component (22), the surface of lifting hook subassembly (22) rotates and is connected with reinforcing frame (23), the skin weld of reinforcing frame (23) has bull stick (24), bull stick (24) rotate to be connected in the inside of lifting hook subassembly (22), and bull stick (24) spiro union is in the inside of lifting hook subassembly (22).

2. The gantry crane device for bridge construction according to claim 1, wherein: the supporting frame (1) is provided with two sets ofly, and every group supporting frame (1) includes two sets of backup pads, and the backup pad includes that a set of support links board and a set of fixed plate, and reinforcing plate (3) are provided with the multiunit, and multiunit reinforcing plate (3) welding is at the inboard surface that two sets of supports link board, and multiunit reinforcing plate (3) are connected and are formed multiunit triangle-shaped structure.

3. The gantry crane device for bridge construction according to claim 1, wherein: the inside upper end of mount pad (2) is equipped with two sets of mounting grooves (4), the inside side of mount pad (2) is equipped with two sets of mounting grooves (4), connecting plate (5) are provided with the multiunit, multiunit connecting plate (5) welding is on the surface of fixed plate, mount (6) comprise a set of regulating plate and multiunit limiting plate, multiunit limiting plate welding is on the surface of regulating plate, the multiunit limiting plate passes through mounting groove (4) extrusion connection of mount pad (2) side on the surface of multiunit connecting plate (5), connecting plate (5) all are equipped with two sets of fixed orificess (7) with the inside of limiting plate, clamping screw (8) spiro union is in the inside of multiunit fixed orifices.

4. The gantry crane device for bridge construction according to claim 1, wherein: hoist and mount subassembly (10) comprise a set of "concave" word shaped plate and two sets of circular frame structure, and the salient surface of two sets of circular frame structure welds respectively on a set of salient surface of "concave" word shaped plate, and dwang (12) are cylindrical shaft-like structure, and rotation groove (11) set up in circular frame structure's inside, and dwang (12) rotate to be connected inside two sets of circular frame structure's sunk part.

5. The gantry crane device for bridge construction according to claim 1, wherein: the installation cover (13) is hollow cylindrical structure, dwang (12) welding is at the hollow part inner wall of installation cover (13), and grip block (15) are provided with two sets ofly, and grip block (15) are including a set of location slider and a set of "concave" font board, and the location slider welding is at the protruding part surface of "concave" font inboard, and location slider sliding connection is in the inside of location spout (14), and the sunk part of "concave" font board is hollow arc structure.

6. The gantry crane device for bridge construction according to claim 1, wherein: butt joint frame (17) are rectangle frame structure, and butt joint groove (18) set up the sunk part in butt joint frame (17), and butt joint board (19) are rectangle platelike structure, and grip block (15) "concave" font board outside the protruding part inside is equipped with the regulation spout, and butt joint frame (17) and butt joint board (19) are through sliding plate (20) sliding connection in the inside of adjusting the spout, and the inside of butt joint frame (17) and butt joint board (19) all is equipped with fixed orifices (7), and the inside spiro union of fixed orifices (7) has set screw (8).

7. The gantry crane device for bridge construction according to claim 1, wherein: lifting hook subassembly (22) are including lifting hook and lifting hook frame, and the lifting hook frame welding is on the surface of installation cover (13), and strengthening frame (23) are "concave" font platelike structure, and bull stick (24) welding is at the salient inner wall of "concave" font shaped plate, and the inside of lifting hook frame is equipped with the turn trough, and bull stick (24) rotate to be connected in the inside of turn trough, and the inside of lifting hook frame and bull stick (24) all is equipped with multiunit fixed orifices (7), and the inside spiro union of fixed orifices (7) has set screw (8).