CN110607759A - Bridge girder erection machine horn draw bail - Google Patents
Bridge girder erection machine horn draw bail Download PDFInfo
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- CN110607759A CN110607759A CN201910990187.7A CN201910990187A CN110607759A CN 110607759 A CN110607759 A CN 110607759A CN 201910990187 A CN201910990187 A CN 201910990187A CN 110607759 A CN110607759 A CN 110607759A
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- 230000008878 coupling Effects 0.000 claims abstract description 10
- 238000010168 coupling process Methods 0.000 claims abstract description 10
- 238000005859 coupling reaction Methods 0.000 claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims description 36
- 238000001179 sorption measurement Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 abstract description 21
- 230000005389 magnetism Effects 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention discloses a bridge girder erection machine arm connecting structure. Including the horn, be used for connecting the coupling assembling of two horns and be used for fixing horn and coupling assembling's set screw, through spill stopper, arc flexure strip, the spring constitutes the joint structure, ring groove on the cooperation set screw, permanent magnetism screw thread post, structures such as thread groove, realize fixing a position set screw when the installation, simultaneously when dismantling, because the joint structure provides the holding power, make set screw can not drop from first mounting hole, effectively avoided losing of set screw. Connect horn, coupling assembling through first set screw and the fixed screw of second to cooperation installation component compares and screws up in one of prior art, realizes screwing up in step of a plurality of first set screws and second set screw, need not artifical installation, and efficiency is showing and is promoting.
Description
Technical Field
The invention relates to the field of bridge erecting equipment, in particular to a bridge erecting machine arm connecting structure.
Background
The arm structures of various bridge erecting machines have the common characteristics and are formed by connecting in sections. Usually, the connecting lugs are matched with the wallboard holes and connected by pins. However, the method has the problems of small connecting contact area, short grease retention time, poor reliability, fatigue resistance, easy abrasion and looseness and the like.
Publication No. CN201151876Y discloses an improved horn connecting device of a single-guide-beam bridge girder erection machine. The connecting mechanism comprises machine arms which are abutted end to end, wherein convex connecting male heads are horizontally and fixedly arranged at intervals on the surface of one end of each machine arm, a connecting female head which can be fixedly matched with the connecting male heads in a plug-in mounting mode is correspondingly fixed at intervals on the end surface of the other machine arm which is abutted with the end surface of the machine arm provided with the connecting male heads, the corresponding connecting male heads and the connecting female heads are assembled through pin shaft cross connection, and locking components are arranged between the outer end surfaces of the pin shafts and the connecting female heads or between the connecting male heads. The bolt pre-tightening force inspection device solves the problems that the pre-tightening force requirement on the bolt is strict during assembling and frequent inspection is needed in the using process in the prior art. When equipment is frequently transferred, the problems of deformation of the machine arm and loss and damage of the bolt are easily caused. This scheme installation is dismantled comparatively loaded down with trivial details, and when unable solution was dismantled, the bolt was followed the screw landing easily, leads to the problem of losing.
Disclosure of Invention
In order to solve the technical problem, the invention aims to provide a bridge girder erection machine arm connecting structure, a clamping structure is formed by a concave limiting block, an arc-shaped elastic sheet and a spring, the clamping structure is matched with structures such as an annular clamping groove, a permanent magnet threaded column and a threaded groove on a fixing screw, the fixing screw is positioned during installation, and meanwhile, when the bridge girder erection machine is disassembled, the clamping structure provides supporting force, so that the fixing screw cannot fall off from a first installation hole. The machine arm and the connecting assembly are connected through the first fixing screw and the second fixing screw, and the first fixing screw and the second fixing screw are matched with the mounting assembly, so that compared with one screwing mode in the prior art, synchronous screwing of the first fixing screws and the second fixing screws is realized.
The technical problem to be solved by the invention is as follows:
A. how to realize the quick installation of horn connection and the problem that the bolt is lost easily when dismantling.
The purpose of the invention can be realized by the following technical scheme:
a bridge girder erection machine horn connection structure comprises a machine horn, a connection assembly used for connecting two machine horns and a fixing screw used for fixing the machine horn and the connection assembly, wherein the inner walls of two sides of two ends of the machine horn are fixedly connected with positioning blocks, and three first mounting holes which are equidistant and collinear are formed in the upper end surface and the lower end surface of the two ends of the machine horn;
the inner side wall of the first mounting hole is provided with mounting grooves which are symmetrically arranged relative to the axis of the hole, the middle part of each mounting groove is provided with a lug to divide the mounting groove into two connecting grooves, concave limiting blocks are longitudinally and slidably connected in the connecting grooves, the two concave limiting blocks on the same side are respectively connected to two ends of the same arc-shaped elastic sheet in a rotating shaft mode, and the concave limiting blocks are connected with the lug in the middle of the mounting groove through springs;
the two ends of the machine arm are respectively inserted with a connecting component, and the upper end surface and the lower end surface of the connecting component are provided with second mounting holes matched with the first mounting holes; the connecting assembly is inserted into the two ends of the machine arm and then abutted against the positioning block, and meanwhile, the axis of the second mounting hole of the first mounting hole is overlapped;
the fixing screws comprise a first fixing screw and a second fixing screw, the first mounting hole and the second mounting hole on the upper end surface are movably inserted with the same first fixing screw, and the first mounting hole and the second mounting hole on the lower end surface are movably inserted with the same second fixing screw;
the outer side wall of the first fixing screw is provided with a pair of first annular clamping grooves matched with the arc-shaped elastic sheets, and the two first annular clamping grooves are respectively positioned at two ends of the first fixing screw; the tail part of the first fixing screw is fixedly connected with a permanent magnet threaded column, and the outer side wall of the first fixing screw, which is positioned between the two first annular clamping grooves, is provided with first gear teeth;
the outer side wall of the second fixing screw is provided with a pair of second annular clamping grooves matched with the arc-shaped elastic sheets, the two second annular clamping grooves are respectively positioned at two ends of the first fixing screw, the tail end face of the second fixing screw is provided with a thread groove matched with the permanent magnet thread column, and the tail of the second fixing screw is of a magnetic cylindrical structure; and the second set screw is located two the second teeth of a cogwheel have been seted up to the lateral wall between the second ring-shaped clamping groove.
Further, the coupling structure further comprises a mounting assembly for mounting the horn, the connecting assembly, the first fixing screw and the second fixing screw together;
guide grooves are formed in the inner walls of the two sides of the machine arm, racks are fixedly connected to the inner walls of the guide grooves, and the mounting assembly comprises a screwing mechanism, a telescopic adsorption mechanism, a driving and positioning mechanism, a universal wheel, a positioning groove and a mounting block;
universal wheels are embedded in the four end points of the upper end surface and the lower end surface of the mounting block; the mounting block is characterized in that driving and positioning mechanisms matched with the guide grooves are respectively arranged on two side walls of the mounting block, positioning grooves matched with the positioning blocks are formed in the joint of the side walls and the front wall of the mounting block, three accommodating grooves and three pairs of longitudinal sliding grooves are formed in the front wall of the mounting block, and a plurality of longitudinally arranged telescopic adsorption mechanisms are fixedly connected inside the accommodating grooves; each pair of longitudinal sliding grooves are arranged at the upper end and the lower end of the containing groove, and the screwing mechanism is pushed to move longitudinally in the longitudinal sliding grooves through a longitudinal electric push rod fixedly connected to the inner part of the longitudinal sliding grooves.
Furthermore, the driving and positioning mechanism comprises a stepping motor with a self-locking function and a driving gear fixedly connected with the stepping motor with the self-locking function, wherein the stepping motor is installed in the installation block, and the driving gear is meshed with the rack in the guide groove.
Furthermore, flexible adsorption device includes electric telescopic handle and the electromagnetic plate of fixed connection at the electric telescopic handle tip of fixed connection in holding the inslot.
Furthermore, the screwing mechanism comprises a sliding block connected with the longitudinal electric push rod, the sliding block is fixedly connected with a fixed clamping arm, and the end part of the fixed clamping arm far away from the sliding block is provided with a first clamping groove which is in a quarter-cylinder groove shape, a screwing wheel driven by a motor is embedded on the side wall of the inner ring of the first clamping groove in a rotating way, a transverse sliding groove is arranged on the end surface of the sliding block, which is positioned on the fixed clamping arm, a transverse electric push rod is fixedly connected inside the transverse sliding groove, a movable clamping arm is fixedly connected with the transverse electric push rod, the end part of the movable clamping arm far away from the sliding block is provided with a second clamping groove which is a half cylindrical groove, the inner circle lateral wall of second double-layered groove rotates to inlay has two by motor drive's the wheel of screwing in, the third teeth of a cogwheel of the first teeth of a cogwheel of matching and second teeth of a cogwheel are seted up to the outer lane lateral wall of the wheel of screwing in.
The invention has the beneficial effects that:
(1) constitute the joint structure through spill stopper, arc elastic sheet, spring, cooperation ring groove, permanent magnetism screw thread post, thread groove isotructure on the set screw realize fixing a position set screw when the installation, simultaneously when dismantling, because the joint structure provides the holding power for set screw can not follow first mounting hole and drop, has effectively avoided losing of set screw.
(2) Connect horn, coupling assembling through first set screw and the fixed screw of second to cooperation installation component compares and screws up in one of prior art, realizes screwing up in step of a plurality of first set screws and second set screw, need not artifical installation, and efficiency is showing and is promoting.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the connection of the horn, the connecting assembly, the first set screw and the second set screw of the present invention;
FIG. 2 is a schematic view of the internal structure of the horn of the present invention;
FIG. 3 is a schematic structural view of the connection assembly of the present invention;
FIG. 4 is an enlarged view of portion A;
FIG. 5 is a schematic view of a first set screw of the present invention;
FIG. 6 is a schematic structural view of a second set screw of the present invention;
FIG. 7 is a schematic view of the internal connections of the horn, attachment assembly, first set screw, second set screw and mounting assembly of the present invention;
FIG. 8 is a schematic view of the connection of a first set screw to the arcuate resilient tab in the first mounting hole;
FIG. 9 is a schematic structural view of the mounting assembly;
fig. 10 is a schematic structural view of the tightening mechanism;
fig. 11 is a schematic structural view of the telescopic adsorption mechanism.
In the figure: the clamping device comprises a machine arm 1, a positioning block 101, a guide groove 102, a first mounting hole 103, a concave limiting block 104, an arc-shaped elastic sheet 105, a spring 106, a connecting assembly 2, a second mounting hole 201, a first fixing screw 3, a first annular clamping groove 301, a permanent magnet threaded column 302, a first gear tooth 303, a second fixing screw 4, a second annular clamping groove 401, a threaded groove 402, a second gear tooth 403, a mounting assembly 5, a screwing mechanism 501, a sliding block 5011, a fixing clamping arm 5012, a movable clamping arm 5013, a screwing wheel 5014, a telescopic adsorption mechanism 502, an electric telescopic rod 5021, an electromagnetic plate 5022, a driving positioning mechanism 503, a universal wheel 504, a positioning groove 505 and a mounting block 506.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.
Referring to fig. 1-11, the present embodiment provides a bridge crane jib connection structure, including a jib 1, a connection assembly 2 for connecting two jibs 1, and a fixing screw for fixing the jib 1 and the connection assembly 2, where inner walls of two sides of two ends of the jib 1 are both fixedly connected with a positioning block 101 for positioning an insertion position of the connection assembly 2 and a stop position of the mounting assembly 5, and an upper end surface and a lower end surface of two ends of the jib 1 are both provided with three first mounting holes 103 which are equidistant and collinear;
the inner side wall of the first mounting hole 103 is provided with mounting grooves which are symmetrically arranged relative to the axis of the hole, the middle part of each mounting groove is provided with a convex block to divide the mounting groove into two connecting grooves, the connecting grooves are longitudinally and slidably connected with concave limiting blocks 104, the concave limiting blocks 104 are strip-shaped, the cross sections of the concave limiting blocks are in a concave shape, the two ends of each concave limiting block 104 can be inserted into the sliding grooves to realize limiting and sliding by arranging the sliding grooves on the inner wall of each connecting groove, the two concave limiting blocks 104 on the same side are respectively connected with the two ends of the same arc-shaped elastic sheet 105 in a rotating mode, the two ends of each arc-shaped elastic sheet 105 can rotate relative to the corresponding concave; the two springs 106 provide an inward pulling force to keep the two ends of the arc-shaped elastic piece 105 close.
The two ends of the horn 1 are respectively inserted with a connecting component 2, the upper end face and the lower end face of the connecting component 2 are provided with second mounting holes 201 matched with the first mounting holes 103, and the distance and the aperture are the same; the connecting assembly 2 is inserted into two ends of the horn 1 and then abutted against the positioning block 101, and meanwhile, the axes of the second mounting holes 201 of the first mounting holes 103 are overlapped; at this moment, the connecting assembly 2 is installed in place and is finally fixed through a fixing screw.
The fixing screws comprise first fixing screws 3 and second fixing screws 4, the first mounting holes 103 and the second mounting holes 201 on the upper end surface are movably inserted with the same first fixing screws 3, and the first mounting holes 103 and the second mounting holes 201 on the lower end surface are movably inserted with the same second fixing screws 4;
a pair of first annular clamping grooves 301 matched with the arc-shaped elastic sheets 105 is formed in the outer side wall of the first fixing screw 3, and the two first annular clamping grooves 301 are respectively located at two ends of the first fixing screw 3; the tail part of the first fixing screw 3 is fixedly connected with a permanent magnet threaded column 302, and a first gear tooth 303 is arranged on the outer side wall of the first fixing screw 3 between the two first annular clamping grooves 301;
a pair of second annular clamping grooves 401 matched with the arc-shaped elastic sheets 105 are formed in the outer side wall of the second fixing screw 4, the two second annular clamping grooves 401 are respectively located at two ends of the first fixing screw 3, a thread groove 402 matched with the permanent magnet thread column 302 is formed in the end face of the tail portion of the second fixing screw 4, and the tail portion of the second fixing screw 4 is of a magnetic cylindrical structure, such as made of an iron material; and a second gear tooth 403 is formed on the outer side wall of the second fixing screw 4 located between the two second ring-shaped clamping grooves 401.
The deformable arc-shaped elastic piece 105 is matched with an annular groove on the fixing screw, when the fixing screw is inserted into the first mounting hole 103, a paragraph feeling is formed, the inserting position of the fixing screw can be positioned, and meanwhile, the fixing screw can be prevented from falling off when the fixing screw is detached.
If manual installation is adopted, only fixing screws need to be inserted, the tail ends of the first fixing screw 3 and the second fixing screw 4 are close to each other, and the permanent magnet threaded column 302 is screwed into the threaded groove 402 to complete the fixing.
The coupling structure further comprises a mounting assembly 5 for mounting the horn 1, the connecting assembly 2, the first fixing screw 3 and the second fixing screw 4 together; can realize quick installation, improve assembly efficiency. During installation, the arc-shaped elastic piece 105 is clamped into the first annular clamping groove 301, far away from the head, of the first fixing screw 3 and the second annular clamping groove 401, far away from the head, of the second fixing screw 4, and the arc-shaped elastic piece does not need to be integrally inserted.
The inner walls of two sides of the horn 1 are provided with guide grooves 102, the inner walls of the guide grooves 102 are fixedly connected with racks, and the mounting assembly 5 comprises a screwing mechanism 501, a telescopic adsorption mechanism 502, a driving and positioning mechanism 503, a universal wheel 504, a positioning groove 505 and a mounting block 506;
universal wheels 504 are embedded into the four end points of the upper end surface and the lower end surface of the mounting block 506, and the upper surface and the lower surface are four respectively; the moving friction force is reduced, the installation block 506 can move in the machine arm 1 conveniently, the two side walls of the installation block 506 are provided with driving and positioning mechanisms 503 matched with the guide grooves 102, the joint of the side wall and the front wall of the installation block 506 is provided with positioning grooves 505 matched with the positioning blocks 101, the front wall of the installation block 506 is provided with three accommodating grooves and three pairs of longitudinal sliding grooves, and a plurality of longitudinal telescopic adsorption mechanisms 502, such as 5, are fixedly connected inside the accommodating grooves and used for adsorbing the magnetic ends of the first fixing screws 3 and the second fixing screws 4, so that the first fixing screws 3 and the second fixing screws 4 are close to and adsorbed together finally; each pair of the longitudinal sliding grooves is arranged at the upper end and the lower end of the accommodating groove, and the screwing mechanism 501 is pushed to move longitudinally in the longitudinal sliding grooves by a longitudinal electric push rod fixedly connected to the inner part of the longitudinal sliding grooves. The tightening mechanism 501 is moved longitudinally in synchronization with tightening of the set screw.
The driving positioning mechanism 503 includes a stepping motor with a self-locking function installed in the mounting block 506 and a driving gear fixedly connected to the stepping motor with the self-locking function, and the driving gear is engaged with the rack in the guide groove 102. The stepping motor drives the driving gear to rotate, and the driving gear drives the mounting assembly 5 to move along the meshing of the rack until the mounting assembly is connected with the positioning block 101 in a clamping mode.
The telescopic adsorption mechanism 502 comprises an electric telescopic rod 5021 fixedly connected in the accommodating groove and an electromagnetic plate 5022 fixedly connected to the end of the electric telescopic rod 5021. The electric telescopic link 5021 is used for taking the electromagnetic plate 5022 into the accommodating groove when shortening, and pushing the electromagnetic plate 5022 between the first fixing screw 3 and the second fixing screw 4 when extending.
The screwing mechanism 501 comprises a sliding block 5011 connected with a longitudinal electric push rod, the sliding block 5011 is fixedly connected with a fixed clamping arm 5012, a first clamping groove is formed in the end part, far away from the sliding block 5011, of the fixed clamping arm 5012, the first clamping groove is in the shape of a quarter cylinder groove, a screwing wheel 5014 driven by a motor is embedded in the inner ring side wall of the first clamping groove in a rotating mode, the sliding block 5011 is located on the end face, where the fixed clamping arm 5012 is located, of the sliding block and is provided with a transverse sliding groove, a transverse electric push rod is fixedly connected inside the transverse sliding groove and is fixedly connected with a movable clamping arm 5013, the default position of the movable clamping arm 5013 is the end, far away from the fixed clamping arm 5012, of the movable clamping arm 5013 is close to the fixed clamping arm 5012 when being installed, the fixed clamping screw is clamped, a second clamping groove is formed in the end part, far away, the inner ring side wall of the second clamping groove is embedded with two screwing wheels 5014 driven by a motor in a rotating mode, and the outer ring side wall of the screwing wheels 5014 is provided with third wheel teeth matched with the first wheel teeth 303 and the second wheel teeth 403. The screwing mechanism 501 has three screwing wheels 5014, which are driven by a motor to rotate along the shaft, and the screwing wheels are meshed with the first gear teeth 303 or the second gear teeth 403 to drive the fixing screws to rotate, and meanwhile, the longitudinal electric push rod moves slowly towards the middle of the mounting component 5, so that the threaded connection between the first fixing screw 3 and the second fixing screw 4 is realized.
The specific working process of this embodiment is as follows:
1) the connecting assembly 2 is inserted into the end of the horn 1 so as to abut against the positioning block 101.
2) Inserting the first fixing screw 3 into the first mounting hole 103 on the upper end surface, inserting the second fixing screw 4 into the first mounting hole 103 on the lower end surface, and only clamping the arc-shaped elastic sheet 105 into the first annular clamping groove 301 of the first fixing screw 3 far away from the head and the second annular clamping groove 401 of the second fixing screw 4 far away from the head;
wherein, when inserting first mounting hole 103, set screw's tail end can conflict with arc elastic sheet 105 earlier, make arc elastic sheet 105 produce deformation, because the holding power of spring 106, make and be close to horn 1 surface spill stopper 104 and can't further compress the spring 106 of connecting, power conduction this moment is to keeping away from surface spill stopper 104, spill stopper 104 takes place the motion, make the spring 106 of connecting tensile, reduce arc elastic sheet 105's radian, tend to levelly and smoothly, set screw can insert smoothly this moment, until arc elastic sheet 105 and first ring groove 301 coplane, arc elastic sheet 105 card is gone into first ring groove 301 coplane, block set screw, if need continue to insert, it can to provide the power of pulling set screw once more.
3) The installation component 5 is put into the other end of the horn 1, the driving positioning mechanism 503 is started, the stepping motor drives the driving gear to rotate, and the driving gear drives the installation component 5 to move along the meshing of the racks until the positioning groove 505 is clamped with the positioning block 101 to reach the installation position.
Then, the electric telescopic rod 5021 extends to push the electromagnetic plates 5022 to be between the first fixing screw 3 and the second fixing screw 4, meanwhile, each electromagnetic plate 5022 is electrified, the magnetic poles of the opposite surfaces of the two adjacent electromagnetic plates 5022 are opposite, the first fixing screw 3 and the second fixing screw 4 are attracted to be close by magnetic force until the electromagnetic plates 5022 at the upper end and the lower end are adsorbed together, the electromagnetic plates 5022 at the upper end and the lower end are closed, the electromagnetic plates 5022 are collected into the containing groove through the electric telescopic rod 5021, the electromagnetic plates 5022 at the new two ends continue to attract the first fixing screw 3 and the second fixing screw 4 to be close to each other, and so on, until the last electromagnetic plate 5022 is collected into the containing groove, because the distance between the permanent magnet thread column 302 and the thread groove 402 is close enough, the permanent magnet thread column 302 and the thread groove 402 are adsorbed together, the movable clamping arm 5013 is driven to be close to the fixing arm 5012, the fixing screw is, under the drive of a motor, the fixing screw is driven to rotate by being meshed with the first gear teeth 303 or the second gear teeth 403, meanwhile, the longitudinal electric push rod moves slowly towards the middle of the mounting component 5, the threaded connection of the first fixing screw 3 and the second fixing screw 4 is realized, the mounting of the fixing screw is completed, finally, the movable clamping arm 5013 is far away from the fixed clamping arm 5012, and after the fixing screw is loosened, the positioning mechanism 503 is driven to move the mounting component 5 out of the machine arm 1.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (5)
1. A bridge crane horn connection structure comprises a crane horn (1), a connection assembly (2) used for connecting two crane horns (1), and fixing screws used for fixing the crane horn (1) and the connection assembly (2), and is characterized in that the inner walls of two sides of two ends of the crane horn (1) are fixedly connected with positioning blocks (101), and three first mounting holes (103) which are equidistant and collinear are formed in the upper end surface and the lower end surface of two ends of the crane horn (1);
the inner side wall of the first mounting hole (103) is provided with mounting grooves which are symmetrically arranged relative to the axis of the hole, the middle part of each mounting groove is provided with a lug to divide the mounting groove into two connecting grooves, concave limiting blocks (104) are longitudinally and slidably connected in the connecting grooves, the two concave limiting blocks (104) on the same side are respectively connected to two ends of the same arc-shaped elastic sheet (105) in a rotating shaft mode, and the concave limiting blocks (104) are connected with the lug in the middle part of the mounting groove through springs (106);
the two ends of the machine arm (1) are respectively spliced with a connecting component (2), and the upper end surface and the lower end surface of each connecting component (2) are provided with second mounting holes (201) matched with the first mounting holes (103); the connecting assembly (2) is inserted into two ends of the machine arm (1) and then abuts against the positioning block (101), and meanwhile, the axes of the second mounting holes (201) of the first mounting holes (103) are overlapped;
the fixing screws comprise first fixing screws (3) and second fixing screws (4), the first mounting holes (103) and the second mounting holes (201) on the upper end face are movably inserted with the same first fixing screws (3), and the first mounting holes (103) and the second mounting holes (201) on the lower end face are movably inserted with the same second fixing screws (4);
a pair of first annular clamping grooves (301) matched with the arc-shaped elastic sheets (105) is formed in the outer side wall of the first fixing screw (3), and the two first annular clamping grooves (301) are respectively located at two ends of the first fixing screw (3); the tail part of the first fixing screw (3) is fixedly connected with a permanent magnet threaded column (302), and a first gear tooth (303) is formed in the outer side wall, located between the two first annular clamping grooves (301), of the first fixing screw (3);
a pair of second annular clamping grooves (401) matched with the arc-shaped elastic sheets (105) is formed in the outer side wall of the second fixing screw (4), the two second annular clamping grooves (401) are respectively located at two ends of the first fixing screw (3), a thread groove (402) matched with the permanent magnet thread column (302) is formed in the end face of the tail of the second fixing screw (4), and the tail of the second fixing screw (4) is of a magnetic cylindrical structure; and a second gear tooth (403) is arranged on the outer side wall, positioned between the two second annular clamping grooves (401), of the second fixing screw (4).
2. A bridge crane jib coupling arrangement according to claim 1 wherein the coupling arrangement further comprises a mounting assembly (5) for mounting the jib (1), the connection assembly (2), the first set screw (3) and the second set screw (4) together;
the inner walls of two sides of the machine arm (1) are provided with guide grooves (102), the inner walls of the guide grooves (102) are fixedly connected with racks, and the mounting assembly (5) comprises a screwing mechanism (501), a telescopic adsorption mechanism (502), a driving and positioning mechanism (503), a universal wheel (504), a positioning groove (505) and a mounting block (506);
universal wheels (504) are embedded into the four end points of the upper end surface and the lower end surface of the mounting block (506); the two side walls of the mounting block (506) are respectively provided with a driving positioning mechanism (503) matched with the guide groove (102), the joint of the side wall and the front wall of the mounting block (506) is provided with a positioning groove (505) matched with the positioning block (101), the front wall of the mounting block (506) is provided with three accommodating grooves and three pairs of longitudinal sliding grooves, and the inside of each accommodating groove is fixedly connected with a plurality of longitudinally arranged telescopic adsorption mechanisms (502); each pair of longitudinal sliding grooves are formed in the upper end and the lower end of the containing groove, and the screwing mechanism (501) is pushed to move longitudinally in the longitudinal sliding grooves through a longitudinal electric push rod fixedly connected to the inner portion of the longitudinal sliding grooves.
3. A bridge crane arm coupling structure as claimed in claim 2, wherein the drive positioning mechanism (503) comprises a self-locking stepping motor installed in the mounting block (506) and a drive gear fixedly connected with the self-locking stepping motor, and the drive gear is engaged with the rack in the guide groove (102).
4. A bridge crane jib coupling structure according to claim 2 wherein said telescopic attachment mechanism (502) comprises an electric telescopic rod (5021) fixedly connected in the receiving groove and an electromagnetic plate (5022) fixedly connected to the end of the electric telescopic rod (5021).
5. The bridge crane arm connecting structure as claimed in claim 2, wherein the screwing mechanism (501) comprises a sliding block (5011) connected with a longitudinal electric push rod, the sliding block (5011) is fixedly connected with a fixed clamping arm (5012), and the end of the fixed clamping arm (5012) far away from the sliding block (5011) is provided with a first clamping groove, the first clamping groove is a quarter cylinder groove, the inner ring side wall of the first clamping groove is rotatably embedded with a screwing wheel (5014) driven by a motor, the sliding block (5011) is provided with a transverse sliding groove on the end face where the fixed clamping arm (5012) is located, the transverse sliding groove is internally and fixedly connected with a transverse electric push rod, the transverse electric push rod is fixedly connected with a movable clamping arm (5013), the end of the movable clamping arm (5013) far away from the sliding block (5011) is provided with a second clamping groove, the second clamping groove is a half cylinder groove, the inner ring side wall of the second clamping groove is embedded with two screwing wheels (5014) driven by a motor in a rotating mode, and the outer ring side wall of each screwing wheel (5014) is provided with third wheel teeth matched with the first wheel teeth (303) and the second wheel teeth (403).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910990187.7A CN110607759A (en) | 2019-10-17 | 2019-10-17 | Bridge girder erection machine horn draw bail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910990187.7A CN110607759A (en) | 2019-10-17 | 2019-10-17 | Bridge girder erection machine horn draw bail |
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| CN110607759A true CN110607759A (en) | 2019-12-24 |
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| CN201910990187.7A Pending CN110607759A (en) | 2019-10-17 | 2019-10-17 | Bridge girder erection machine horn draw bail |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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