CN107777566A - A kind of bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead - Google Patents

Abstract

This application discloses a kind of bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead, including double girder bridge；End carriage both ends on crane span structure are designed with cart actuating device；Two of end carriage connects horizontal wheel apparatus；Track is provided with below girder on crane span structure；Track both ends connect car bumper device；Underslung trolley is connected on two tracks；Underslung trolley is provided with rotating mechanism；Suspension rod axle in rotating mechanism is connected with cantilever member；Rotary limit device is provided between cantilever member and underslung trolley；Electric block is installed, electric block can move back and forth along outrigger horizontal on cantilever member；Cantilever beam is in below girder and can rotated；Electric frame is chosen provided with some at the top of double girder bridge, connection below electric frame is chosen and leads cable rail；Lead and be connected with moveable lashed cable on cable rail.

Description

A kind of bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead

Technical field

The application is related to crane field, more particularly to a kind of bridge-type cantilever lifting with underslung trolley and Moveable bumper for overhead Machine.

Background technology

Existing bridge crane is applied in Workshop, and many machine tools have been controlled in some workshops and have been processed life Production, product and raw material are required for Real-Time Transport to next door workshop or other departments；The suspension hook of crane on workshop is from dolly Upper hang carries out lifting goods, and dolly can only be run back and forth along crane twin beams, and crane can only be along workshop both sides Run back and forth across the cart track on post, the goods scope that such crane hook can lift is in two, workshop cart track Within the plane that two-end-point is surrounded, when being in the goods of this horizontal edge needs lifting, suspension hook just produces oblique pull, then from this The article (such as workshop outdoors, across outer) of far point cannot lift outside individual plane, can only now turn by other transporting equipments Fortune, generally drives workshop into by automobile and lifting goods is carried out under suspension hook, some cars are opened to come in this workshop and next door workshop Between laterally lay track, allow trolley special to reach suspension hook and get off to join goods, some is in workshop doorway (or workshop passageway) A special cantilever crane is set up, scheduling is transported through to the goods outside workshop, first goods is lifted up into and hung in this workshop crane The place that hook is got at, then again by crane this goods handling to the other stations in workshop, what is used under this operating mode shows There is bridge crane, can not directly join goods with next door workshop, must be brought quite not by other transporting equipment schedule jobs Just, manpower and materials are also produced to waste.

The content of the invention

The application purpose is to provide a kind of bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead, the crane Goods of this workshop across outer next door place can be lifted by crane directly below by cart support rail beam, also can be in cart running track direction This workshop direct lifting cargo in place outdoors, it is not necessary to transported by other transporting equipments, improve efficiency, and can be goods discharge In the place that workshop needs, the crane can use in the workshop of low roofing；The crane does not tumble, runs and do not block, Large and small car operation is smooth, securely and reliably.

To reach above-mentioned purpose, the application is realized using following technology：

A kind of bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead, including double girder bridge 28；The double girder bridge Including end carriage 1, girder 2；It is characterized in that：The both ends of end carriage 1 are designed with the cart actuating device with blank cap type inner flange seat 8；Two of the end carriage respectively connects a horizontal wheel apparatus 6；The lower section of girder 2 is provided with track 21；The track both ends connect Pick up blocking means 70；Underslung trolley 3 is connected on two tracks 21；The underslung trolley 3 is provided with rotating mechanism 4；Institute The suspension rod axle 42 stated in rotating mechanism is connected with cantilever member 5；Rotary stopper is provided between the cantilever member and underslung trolley 3 Device 58；Electric block 10 is installed, electric block can move back and forth along outrigger horizontal on the cantilever member 5；It is described outstanding Arm beam is in operation outside extended workshop below the girder, and can rotate in the horizontal plane；It is provided with the top of the double girder bridge It is some to choose electric frame 121, choose connection below electric frame and lead cable rail 124；Described lead is connected with moveable lashed cable 123 on cable rail.

Wherein, described rotating mechanism 4 includes drive device 40, bearing block 41, suspension rod axle 42, and the suspension rod axle is by pushing away Power bearing 45 is connected to inside the bearing block 41, and the suspension rod axle reconnects bearing A44 and bearing B46, the bearing A and axle Hold the both ends that B is connected to above-mentioned bearing block by bolt and fixed cover 43 and blind flange 47 respectively, described suspension rod axle both ends point Do not stretched from fixed cover 43 and the center of blind flange 47；The external diameter of bearing block 41 is fixedly connected on trolley frame 31；Described Drive device 40 is combined by motor and vertical type speed reducer (change gear), and described drive device is connected on reductor bearing 401, described Reductor bearing is fixed on trolley frame 31；Described drive device output shaft connects the one of above-mentioned suspension rod axle by shaft coupling 48 End.

Wherein, described cantilever member 5 includes cantilever beam 51, Holder for hanging household utensiles 52；Described one setting connecting hole of Holder for hanging household utensiles 521, described connecting hole is interior to be provided with keyway 522；The Holder for hanging household utensiles other end is provided with operation window 523 and is used to operate connection anti-loose spiral shell It is female；The operation window of the Holder for hanging household utensiles 52 this be welded on one end of the cantilever beam 51；The cantilever beam is made up of I-steel, Or be made up of H profile steel, the cantilever beam both ends are provided with buffing pad 511.

Wherein, described cantilever member 5 is connected on the suspension rod axle 42 of rotating mechanism by flat key 49 and stop nut 9； Described stop nut and suspension rod axle is connected with bolt 99 again, and the bolt is through the straight of stop nut and suspension rod axle Footpath.

Wherein, described underslung trolley 3 includes trolley frame 31, drive mechanism 34, roller devices 35；The trolley frame is by steel Plate weld is formed or is welded by steel plate and shaped steel combination；The trolley frame both sides connect the drive mechanism described in two sets respectively 34；The drive mechanism is connected on trolley frame by balance plate 32 and bearing pin 33；On the side of every set drive mechanism on trolley frame Side reconnects a roller devices 35；The roller devices are in immediately below track 21；The drive mechanism 34 includes motor 341st, two driving wheels, 342, two followers 343, band gear on driving wheel single-wheel edge and wheel rim, follower band single-wheel edge；Institute State two driving wheels to be connected on left hanging plate 344, described two followers are connected on right hanging plate 345；The left hanging plate and the right side Hanging plate is connected by two studs and nut 346；Above-mentioned motor 341 carries reductor, motor output shaft band gear；It is described Motor 341 is connected on left hanging plate, and motor output shaft is connected with above-mentioned two driving wheel external toothing simultaneously.

Wherein, described cart actuating device 8 includes connecting shaft wheel 81, blank cap type inner flange seat 86, inner flange seat 82, subtracted Speed motor 83, described connecting shaft wheel 81 are double wheel rims, and connecting shaft wheel center sets one section of axis hole 811；The connecting shaft car The shaft extension 812 of wheel both sides respectively connected the inner ring of bearing 84；The outer ring of two bearings is connected to above-mentioned inner flange In seat 82 and blank cap type inner flange seat 86；Described inner flange seat 82 and the ring flange of blank cap type inner flange seat 86 are connected to The inner side of the head side of end carriage 1；The described output shaft 831 of reducing motor 83 is vertical with motor shaft, and output shaft is connected to above-mentioned company In the axis hole 811 of axle wheel；Fixing hole on the reducing motor side by cushion pad 85 and is bolted to fixed seat 87 On；The fixed seat 87 is welded on end carriage lateral wall.

Wherein, described horizontal wheel apparatus 6 includes horizontal wheels 61, wheel shaft 62, bearing 63, described horizontal wheels one side belt wheel Edge, and wheel rim is installed down；Two horizontal wheels are separately positioned on the both sides of the tread of track 601, and gap coordinates；The level Wheel is connected by bearing 64, shaft retaining ring 65, hole back-up ring 66 with the wheel shaft 62；Two wheel shafts pass through the He of locking plate 67 respectively It is bolted on above-mentioned bearing 63；Connection buffer 68 among the bearing；The bearing is provided with end carriage connecting hole 69.

Wherein, described car bumper device 70 includes fixed seat 701, buffer 702, and the fixed seat is by the steel plate side of being welded into Shape is made by rectangular steel tube；The fixed seat side opens up clip slot 7011；Welding steel 7012 above the clip slot, Screwed hole 7013 is opened up on steel plate；Connecting bolt and stop nut 703 on screwed hole；Side opens up connecting hole below the clip slot 7014；The fixed seat opens up buffer mounting hole 7015 on the side beside clip slot；Two buffers 702 connect respectively It is connected in two fixed seats 701；Two fixed seats are connected to two of track 21 by screw rod 704 and nut On side Ji 211.

The beneficial effect of the application is as described below：

Cantilever beam in the application crane can be stretched out between crane locomotive to directly lifting goods outdoors or to next door workshop Thing；The next door workshop goods of cart traffic direction end points can be not only lifted by crane, and cart running track line side can be lifted by crane The goods in workshop；Because the cantilever beam of the application is arranged at below dolly and girder, cantilever beam can be by stretching into below support rail beam The direct lifting cargo in next door workshop, or the workshop operation outdoors of cart traffic direction can be directly stretched out, because the generally door in workshop Top can reach height where the support rail beam in this workshop substantially, therefore present techniques feature can realize the application purpose；Lifting After goods, pass through motion of the electric block along cantilever beam, or the rotation by cantilever member, or the shifting for passing through underslung trolley It is dynamic, or the motion by crane travelling mechanism, or by foregoing four integrated motion, the goods of lifting can be hung The place needed to this workshop；It can need not be borrowed when carrying out goods handing-over outdoors with the next door workshop of workshop surrounding or workshop The transhipment of its transporting equipment, improve efficiency.

Trolley track (21) is set below the girder in the application crane, and underslung trolley is suspended on girder track, made Its installing space position reduces, and is particularly suitable for roofing with crane apart from small workshop.

Horizontal wheel apparatus in the application crane is arranged on the both ends of every end carriage, it is ensured that crane operation is not gnawed Rail, it is especially suitable for large span crane；Horizontal wheels in horizontal wheel apparatus carry wheel rim, can serve " safety hook ", may Because of cantilever beam load exceedance, for crane end carriage while upwarping, now the wheel rim of horizontal wheels catches on running track, avoids crane from inclining Turn over, ensure safety；It can be rotated in the same old way while horizontal wheels catch on track, crane can run advance in the same old way, and this technology makes With more advanced than the safety hook of steel plate type, stuck phenomenon does not occur for cart operation；

End carriage both ends in the application crane all set cart actuating device, ensure that cart operation is smooth, avoid unilateral Because end carriage may upwarp during driving, driving wheel not rail produce idle running phenomenon；Cart actuating device (8) structure of the application is new Grain husk, it is practical；The wheel body of connecting shaft wheel is once swaged into wheel shaft, simple in construction, especially suitable path wheel, in connecting shaft wheel As long as the heart meets and power set input axis connection, one section of axis hole of processing, reduction processing capacity；In inner flange seat and blank cap type It is that can stand very big axial float flange seat all without departing from position that the ring flange of flange seat, which is connected to benefit on the inside of end carriage, Connecting bolt is not needed to bear big axial tension；Blank cap type inner flange seat one end in the application is arranged to the boring cover of closing Formula, can be with dust seal；Reducing motor in the application is connected in fixed seat by cushion pad, due to fixed seat rigid solder , it is necessary to which the cushioning effect of cushion pad produces impact shock to mitigate reducing motor startup, brake on end carriage lateral wall, protect Drive device；The drive device of the application, it is simple in construction without shaft coupling, from heavy and light, it is convenient to mount and dismount, good concentricity, noise It is small, operate steadily.

Underslung trolley (3) in the application can move back and forth along girder both ends, be suitable for big width workshop and use；Suspension Drive mechanism (34) on dolly can be in whole set procurement standarized component on the market, supporting facility；Driving wheel, quilt in drive mechanism Driving wheel is connected on the edge of track (21) both sides Ji, ensures that underslung trolley does not drop, so as to ensure that crane is safe to use；It is outstanding Hang dolly side two sets of drive mechanisms of installation to be connected on same track, and roller devices are installed beside every set drive mechanism (35), its be advantageous in that can avoid single driving be possible to because dolly somewhat upwarp on one side adhesion wheel not rail and caused by run not Dynamic phenomenon, dual drive ensure that trolley travelling is smooth；Roller devices can limit underslung trolley while the degree upwarped, ensures that suspension is small Car is stable, and operation is smooth；Power supply needed for underslung trolley and electric block and rotating mechanism can be with underslung trolley by lashed cable Operation power supply back and forth；Gantry top has a plurality of electric frame (121) of choosing to lead the connection of cable rail, keeps leading the rigidity of cable rail, it is ensured that lashed cable Coaster slides smooth in cable rail is led.

Car bumper device (70) on the application middle girder track is flexibly connected in orbit, and welding is solid when not being processing and manufacturing It is fixed, but during in-site installation, fixed according to field condition bolt；Its benefit allows underslung trolley to be run on crane runway The stroke that position allows according to workshop condition selects the link position of car bumper device, and Field adjustment position is welded without gas cutting, is protected Card underslung trolley is rightly blocked by car stop upper bumper, reduces impact, increase trolley travelling safety；The connection position of car bumper Put flexibly, position is adjustable, and environmental suitability is stronger；Two fixed seats (701) left and right in car bumper device can be general, fixed seat It is welded by steel plate or is made by rectangular steel tube, selection is simple, easy to make.

Bearing block and suspension rod axis connection in the application rotating mechanism bear lifting power by thrust bearing, and suspension rod axle is by bearing The spacing firmly radial positions of A and above and below bearing B, ensure that suspension rod axle can bear very big axial force and not offset radially, so as to ensure Drive device axiality is good, and hinged cantilever component is laborsaving；Drive device output shaft in rotating mechanism by shaft coupling (48) with Suspension rod axis connection, increase degree of flexibility, improve the malalignment regulating power between drive device and suspension rod axle；Cantilever member connects In stop nut connected with suspension rod axle thread after, then there is bolt (99) to be connected through stop nut with the diameter of suspension rod axle Come, avoid stop nut from unclamping, securely and reliably.

In the application cantilever beam be provided at both ends with buffing pad can avoid electric block along cantilever beam move back and forth impact or Overtravel；Rotary limit device (58) is provided between cantilever member and underslung trolley, cantilever beam can be avoided excessively to rotate, i.e., do not surpassed The rotation of 360 degree of angles is crossed, prevents from being pulled on Holder for hanging household utensiles (52) that the cable (100) of electric block is wrapped in cantilever member It is disconnected because the cable (100) of electric block be draw from the junction box on trolley frame it is ensuing；Rational installation is safety ruler weldering It is connected on cantilever member, travel switch is fixed on below trolley frame.

Brief description of the drawings

Fig. 1 is the application structural front view；

Fig. 2 is Fig. 1 side view；

Fig. 3 is Fig. 1 top view；

Fig. 4 is F partial enlarged drawings (rotating mechanism) in Fig. 1；

Fig. 5 is cantilever member schematic diagram in the application；

Fig. 6 is underslung trolley structural front view in the application；

Fig. 7 is Fig. 6 side view；

Fig. 8 is the G direction views (trolley driving mechanism) in Fig. 6；

Fig. 9 is cart actuating device schematic diagram in the application；

Figure 10 is the A direction views (right view) in Fig. 9；

Figure 11 is horizontal wheel apparatus structural front view in the application；

Figure 12 is Figure 11 side view；

Figure 13 is car bumper device schematic diagram in the application.

Embodiment

In conjunction with accompanying drawing, the application embodiment is described in detail：

As shown in Figure 1, Figure 2, Figure 3 shows, a kind of bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead, including twin beams bridge Frame 28；The double girder bridge includes end carriage 1, girder 2；It is characterized in that：The both ends of end carriage 1 are designed with band blank cap type inner flange The cart actuating device 8 of seat；Two of the end carriage respectively connects a horizontal wheel apparatus 6；The lower section of girder 2 is provided with track 21；The track both ends connect car bumper device 70；Underslung trolley 3 is connected on two tracks 21；On the underslung trolley 3 Provided with rotating mechanism 4；Suspension rod axle 42 in the rotating mechanism is connected with cantilever member 5；The cantilever member and underslung trolley 3 Between be provided with rotary limit device 58；Electric block 10 is installed, electric block can be along outrigger horizontal on the cantilever member 5 Move back and forth；The cantilever beam is in operation outside extended workshop below the girder, and can rotate in the horizontal plane；It is described double Beam bridge top of the trellis chooses electric frame 121 provided with some, chooses connection below electric frame and leads cable rail 124；It is described lead on cable rail be connected with it is removable Dynamic lashed cable 123.

As shown in figure 4, described rotating mechanism 4 includes drive device 40, bearing block 41, suspension rod axle 42, the suspension rod axle It is connected to by thrust bearing 45 inside the bearing block 41, the suspension rod axle reconnects bearing A44 and bearing B46, the axle Hold the both ends that A and bearing B are connected to above-mentioned bearing block by bolt and fixed cover 43 and blind flange 47 respectively, described suspension rod axle Stretched respectively from fixed cover 43 and the center of blind flange 47 at both ends；The external diameter of bearing block 41 is fixedly connected on trolley frame 31； Described drive device 40 is combined by motor and vertical type speed reducer (change gear), and described drive device is connected to reductor bearing 401 On, the reductor bearing is fixed on trolley frame 31；Described drive device output shaft connects above-mentioned hang by shaft coupling 48 One end of bar axle.

Described cantilever member 5 is connected on the suspension rod axle 42 in rotating mechanism by flat key 49 and stop nut 9；It is described Stop nut and suspension rod axle connected again with bolt 99, and the bolt is through the diameter of stop nut and suspension rod axle.

As shown in figure 5, described cantilever member 5 includes cantilever beam 51, Holder for hanging household utensiles 52；The Holder for hanging household utensiles one sets connection Hole 521, described connecting hole is interior to be provided with keyway 522；The Holder for hanging household utensiles other end is provided with operation window 523 and is used to operate connection anti-loose Nut；The operation window of the Holder for hanging household utensiles 52 this be welded on one end of the cantilever beam 51；The cantilever beam is by I-steel structure Into, or be made up of H profile steel, the cantilever beam both ends are provided with buffing pad 511.

As shown in Fig. 6, Fig. 7, Fig. 8, described underslung trolley 3 includes trolley frame 31, drive mechanism 34, roller devices 35； The trolley frame is welded by steel plate or is welded by steel plate and shaped steel combination；The trolley frame both sides connect two sets respectively Described drive mechanism 34；The drive mechanism is connected on trolley frame by balance plate 32 and bearing pin 33；Every on trolley frame The side for covering drive mechanism reconnects a roller devices 35；The roller devices are in immediately below track 21；The driving machine Structure 34 includes 341, two, the motor follower 343 of driving wheel 342, two, band gear, follower on driving wheel single-wheel edge and wheel rim Band single-wheel edge；Described two driving wheels are connected on left hanging plate 344, and described two followers are connected on right hanging plate 345；It is described Left hanging plate is connected with right hanging plate by two studs and nut 346；Above-mentioned motor 341 carries reductor, motor output shaft Band gear；The motor 341 is connected on left hanging plate, and motor output shaft is connected with above-mentioned two driving wheel external toothing simultaneously.

As shown in figure 9, described cart actuating device 8 includes connecting shaft wheel 81, blank cap type inner flange seat 86, inner flange seat 82nd, reducing motor 83, described connecting shaft wheel 81 are double wheel rims, and connecting shaft wheel center sets one section of axis hole 811；The company The shaft extension 812 of axle wheel both sides respectively connected the inner ring of bearing 84；The outer ring of two bearings is connected in above-mentioned In flange seat 82 and blank cap type inner flange seat 86；Described inner flange seat 82 and the ring flange of blank cap type inner flange seat 86 connect respectively It is connected on the inner side of the head side of end carriage 1；The described output shaft 831 of reducing motor 83 is vertical with motor shaft, and output shaft is connected to State in the axis hole 811 of connecting shaft wheel；Fixing hole on the reducing motor side by cushion pad 85 and is bolted to fixation On seat 87；The fixed seat 87 is welded on end carriage lateral wall.

As shown in Figure 10, Figure 11, described horizontal wheel apparatus 6 includes horizontal wheels 61, wheel shaft 62, bearing 63, the level Wheel is on one side with wheel rim, and wheel rim is installed down；Two horizontal wheels are separately positioned on the both sides of the tread of track 601, and gap is matched somebody with somebody Close；The horizontal wheels are connected by bearing 64, shaft retaining ring 65, hole back-up ring 66 with the wheel shaft 62；Two wheel shafts lead to respectively Cross locking plate 67 and be bolted on above-mentioned bearing 63；Connection buffer 68 among the bearing；The bearing is provided with end Beam connecting hole 69.

As shown in figure 12, described car bumper device 70 includes fixed seat 701, buffer 702, and the fixed seat is welded by steel plate It is connected into square shape or is made by rectangular steel tube；The fixed seat side opens up clip slot 7011；Welding steel above the clip slot Plate 7012, screwed hole 7013 is opened up on steel plate；Connecting bolt and stop nut 703 on screwed hole；Side is opened below the clip slot If connecting hole 7014；The fixed seat opens up buffer mounting hole 7015 on the side beside clip slot；Two buffers 702 are connected in two fixed seats 701；Two fixed seats are connected to rail by screw rod 704 and nut On two sides Ji 211 in road 21.

Claims (8)

1. a kind of bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead, including double girder bridge (28)；The double girder bridge Including end carriage (1), girder (2)；It is characterized in that：End carriage (1) both ends are designed with the cart with blank cap type inner flange seat and driven Dynamic device (8)；Two of the end carriage respectively connects a horizontal wheel apparatus (6)；Track (21) is provided with below the girder (2)； The track both ends connection car bumper device (70)；Underslung trolley (3) is connected on two tracks (21)；The underslung trolley (3) it is provided with rotating mechanism (4)；Suspension rod axle (42) in the rotating mechanism is connected with cantilever member (5)；The cantilever member Rotary limit device (58) is provided between underslung trolley (3)；Electric block (10) is installed on the cantilever member (5), it is electronic Cucurbit can move back and forth along outrigger horizontal；The cantilever beam is in operation outside extended workshop below the girder, and energy Rotate in the horizontal plane；Electric frame (121) is chosen provided with some at the top of the double girder bridge, connection below electric frame is chosen and leads cable rail (124)； Described lead is connected with moveable lashed cable (123) on cable rail.

A kind of 2. bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead according to claim 1, it is characterised in that： Described rotating mechanism (4) includes drive device (40), bearing block (41), suspension rod axle (42), and the suspension rod axle passes through thrust axis Hold (45) and be connected to the bearing block (41) inside, the suspension rod axle reconnects bearing A (44) and bearing B (46), the bearing A It is connected to the both ends of above-mentioned bearing block, described suspension rod by bolt and fixed cover (43) and blind flange (47) respectively with bearing B Stretched respectively from fixed cover (43) and blind flange (47) center at axle both ends；Bearing block (41) external diameter is fixedly connected on dolly On frame (31)；Described drive device (40) is combined by motor and vertical type speed reducer (change gear), and described drive device, which is connected to, to be subtracted On fast machine bearing (401), the reductor bearing is fixed on trolley frame (31)；Described drive device output shaft passes through shaft coupling Device (48) connects one end of above-mentioned suspension rod axle.

A kind of 3. bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead according to claim 1, it is characterised in that： Described cantilever member (5) includes cantilever beam (51), Holder for hanging household utensiles (52)；The Holder for hanging household utensiles one sets connecting hole (521), described Connecting hole in be provided with keyway (522)；The Holder for hanging household utensiles other end is provided with operation window (523)；The operation of the Holder for hanging household utensiles (52) This head of window is welded on one end of the cantilever beam (51)；The cantilever beam is made up of I-steel, or is made up of H profile steel, described Cantilever beam both ends are provided with buffing pad (511).

A kind of 4. bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead according to claim 1, it is characterised in that： Described cantilever member (5) is connected on the suspension rod axle (42) of rotating mechanism by flat key (49) and stop nut (9)；Described Stop nut and suspension rod axle are connected with bolt (99) again, and the bolt (99) is through the straight of stop nut and suspension rod axle Footpath.

A kind of 5. bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead according to claim 1, it is characterised in that： Described underslung trolley (3) includes trolley frame (31), drive mechanism (34), roller devices (35)；The trolley frame is welded by steel plate Connect and form or be welded by steel plate and shaped steel combination；The trolley frame both sides connect the drive mechanism described in two sets respectively (34)；The drive mechanism is connected on trolley frame by balance plate (32) and bearing pin (33)；In every set driving machine on trolley frame The side of structure reconnects a roller devices (35)；The roller devices are in immediately below track (21)；The drive mechanism (34) motor (341), two driving wheels (342), two followers (343) are included, band gear on driving wheel single-wheel edge and wheel rim, Follower band single-wheel edge；Described two driving wheels are connected on left hanging plate (344), and described two followers are connected to right hanging plate (345) on；The left hanging plate is connected with right hanging plate by two studs and nut (346)；Above-mentioned motor (341), which carries, to be subtracted Fast machine, motor output shaft band gear；The motor (341) is connected on left hanging plate, motor output shaft simultaneously with above-mentioned two master Driving wheel external toothing connects.

A kind of 6. bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead according to claim 1, it is characterised in that： Described horizontal wheel apparatus (6) include horizontal wheels (61), wheel shaft (62), bearing (63), the horizontal wheels on one side band wheel rim, and wheel Edge is installed down；Two horizontal wheels are separately positioned on the both sides of track (601) tread, and gap coordinates；The horizontal wheels are led to Bearing (64), shaft retaining ring (65), hole back-up ring (66) is crossed to be connected with the wheel shaft (62)；Two wheel shafts pass through locking plate respectively (67) and it is bolted on above-mentioned bearing (63)；Connection buffer (68) among the bearing；The bearing is provided with end carriage Connecting hole (69).

A kind of 7. bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead according to claim 1, it is characterised in that： Described cart actuating device (8) includes connecting shaft wheel (81), blank cap type inner flange seat (86), inner flange seat (82), deceleration electricity Machine (83), wherein：Described connecting shaft wheel (81) is double wheel rims, and connecting shaft wheel center sets one section of axis hole (811)；It is described The shaft extension (812) of connecting shaft wheel both sides respectively connected the inner ring of bearing (84)；The outer ring of two bearings is connected to In above-mentioned inner flange seat (82) and blank cap type inner flange seat (86)；Described inner flange seat (82) and blank cap type inner flange seat (86) Ring flange be connected to the inner side of end carriage (1) head side；Described reducing motor (83) output shaft (831) and motor shaft Vertically, output shaft is connected in the axis hole (811) of above-mentioned connecting shaft wheel；Fixing hole on the reducing motor side passes through buffering Pad (85) and be bolted in fixed seat (87)；The fixed seat (87) is welded on end carriage (1) lateral wall.

A kind of 8. bridge-type cantilever crane with underslung trolley and Moveable bumper for overhead according to claim 1, it is characterised in that： Described car bumper device (70) include fixed seat (701), buffer (702), the fixed seat by steel plate be welded into square shape or It is made by rectangular steel tube；The fixed seat side opens up clip slot (7011)；Welding steel (7012), steel above the clip slot Screwed hole (7013) is opened up on plate；Connecting bolt and stop nut (703) on screwed hole；Side opens up connection below the clip slot Hole (7014)；The fixed seat opens up buffer mounting hole (7015) on the side beside clip slot；Two buffers (702) it is connected on two fixed seats (701)；Two fixed seats are connected respectively by screw rod (704) and nut It is connected on two sides Ji (211) of track (21).