CN107867649A - A kind of crane of two underslung trolleys of band and balance beam - Google Patents

Abstract

This application discloses a kind of two underslung trolleys of band and the crane of balance beam, including double girder bridge；Double girder bridge includes end carriage, girder；End carriage is formed by connecting by two balance beams and a middle connecting rod；Balance beam one end connects cart actuating device, and the other end connects passive wheel group；Two of end carriage respectively connects a set of horizontal wheel apparatus；Track is provided with below girder；Two underslung trolleys are connected on track；Underslung trolley is provided with rotating mechanism；It is connected in rotating mechanism with cantilever member；Cantilever member is provided with rotary limit device；Electric block is installed on cantilever member and can be moved along outrigger horizontal；Cantilever beam is in below girder and can rotated；Two are set on double girder bridge and chooses electric frame, two cable wire rails of connection between electric frame is chosen, lashed cable is connected with the cable wire rail.

Description

A kind of crane of two underslung trolleys of band and balance beam

Technical field

The application is related to crane field, more particularly to a kind of two underslung trolleys of band and the crane of balance beam.

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 two underslung trolleys of band and the crane of balance beam, and the crane can By workshop both sides cart support rail beam, this workshop of unloading, can be in workshop two across the goods in outer next door place directly below simultaneously Operation simultaneously outside end bay, it can also be especially suitable in this workshop in cart running track direction direct unloading goods in place outdoors Elongate article inside and outside handling workshop；It need not be transported by other transporting equipments, improve efficiency；The crane can be in low roofing Workshop use；The crane does not tumble, runs and do not block, and large and small car operation is smooth, securely and reliably.

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

The crane of a kind of two underslung trolleys of band and balance beam, including double girder bridge 28；The double girder bridge includes End carriage 1, girder 2；It is characterized in that：The end carriage 1 is formed by connecting by two balance beams 102 and a middle connecting rod 101； The cart actuating device 8 of one end connect band splined sleeve of balance beam 102, the other end connect passive wheel group 18；It is described Two of end carriage 1 respectively connects a set of horizontal wheel apparatus 6；The lower section of girder 2 is provided with track 21；The track is by I-steel or H Shaped steel is formed；Two underslung trolleys 3 are connected on two tracks 21；The underslung trolley 3 is provided with rotating mechanism 4；It is described Suspension rod axle 42 in rotating mechanism is connected with cantilever member 5；Rotary stopper is provided between the cantilever member and underslung trolley 3 to fill Put 58；Electric block 10 is installed, electric block can move back and forth along outrigger horizontal on the cantilever member 5；The cantilever Beam is in operation outside extended workshop below the girder, and can rotate in the horizontal plane；Two end carriages 1 on double girder bridge are each Electric frame 121 is chosen in connection one, and two cable wire rails 124 of connection between electric frame are chosen described in two, are all connected on two cable wire rails There is lashed cable 123.

Wherein, described rotating mechanism 4 includes drive device 40, bearing block 41, suspension rod axle 42, the outside of bearing block 41 It is fixedly connected on underslung trolley 3；The lower end branch sleeve 43 of the inner hole of bearing seat；The middle part of suspension rod axle 42 is provided with the shaft shoulder 425；The suspension rod axle is connected through the center of bearing block 41 with thrust bearing 45, and the lower floor of the thrust bearing is connected to bearing block Top, its upper strata is connected with stop nut A44, the stop nut A bands dust cover 441, stop nut A and suspension rod axle thread Connection, and connected by the diameter of bolt 46 through stop nut A and suspension rod axle；Described drive device 40 by motor with Vertical type speed reducer (change gear) is combined, and described drive device is connected on reductor bearing 401, and the reductor bearing is fixed on outstanding Hang on dolly 3；Described drive device output shaft connects one end of above-mentioned suspension rod axle by shaft coupling 48.

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 B9； Described stop nut B and suspension rod axle is connected with bolt 99 again, and the bolt 99 is through stop nut B and suspension rod axle Diameter.

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 wheel 81, reducing motor 83, and the wheel is two-wheel edge, described Inside wheel connects a splined sleeve 811, and the described both sides of wheel 81 pass through bearing 82 and flange shaft 84, hollow flange respectively Axle 85 connects, and the ring flange of described flange shaft 84 and hollow flange axle 85 is connected to the both sides of balance beam 102；It is described The outer ring of bearing 82 is connected to logical lid 86, and the logical lid is bolted in the wheel face；Above-mentioned hollow flange axle 85 Ring flange 851 be provided with motor connection screw 852 and motor positioning hole 853；The reducing motor 83 is with splined output shaft 831 It is connected with above-mentioned inside wheel splined sleeve 811；Positioning flange collar 832 and hollow flange in flange seat on the reducing motor Motor positioning hole 853 in axle, which is inlayed, to be connected and is fastened by screw.

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.

The beneficial effect of the application is as described below：

In the application crane configure two underslung trolleys (3), it is necessary to when underslung trolley can reach workshop two respectively Side operation simultaneously, improves efficiency；Cantilever beam in underslung trolley can be stretched out between crane locomotive to outdoors or straight to next door workshop Connect lifting goods；Two running trolleys are not only able to be in crane both ends unloading cart running track line side workshop respectively Goods, parted hair operation；And it is capable of the next door workshop goods of unloading cart traffic direction end points；Two cantilever beam can stretch out simultaneously Operation outside workshop, especially facilitate cooperation to hang elongated, the soft object of lift, rotated by two the different of cantilever beam, object handling To suitable position；Because cantilever beam is arranged at the lower section of underslung trolley and girder, cantilever beam can by be stretched into below support rail beam every The direct lifting cargo in wall workshop, or can directly stretch out the workshop operation outdoors of cart traffic direction；After lifting goods, by electronic Motion of the cucurbit along cantilever beam, or the rotation by cantilever member, or the movement by underslung trolley, or it is big by crane The motion of car, or by foregoing four integrated motion, the goods of lifting can be hung onto the place that this workshop needs；With every Wall workshop or workshop can need not borrow the transhipment of other transporting equipments when carrying out goods handing-over outdoors, improve efficiency.

Track (21) is set below the girder in the application crane, underslung trolley is suspended on the track below girder, Its installing space position is reduced, is particularly suitable for roofing with crane apart from small workshop, that is, is adapted to low roofing workshop to use.

Cantilever beam, electric block (10) suspension hook therein are equipped with two underslung trolleys (3) in the application crane With the use of that can facilitate handling elongate article, two cantilever beam common operationals are especially suitable for the elongate article inside and outside handling workshop.

Electric frame (121) of choosing on the application loading bridge is provided with two groups of moveable lashed cables (123), outstanding to two respectively Hang dolly (3) power supply.

Horizontal wheel apparatus in the application crane is arranged on two of end carriage, it is ensured that and rail is not gnawed in crane operation, It is especially suitable for large span crane；Horizontal wheels in horizontal wheel apparatus carry wheel rim, can serve " safety hook ", may be because outstanding Arm load beam is overweight, and for crane end carriage while upwarping, now the wheel rim of horizontal wheels catches on running track, avoids crane from tumbling, Ensure safety；Can be rotated in the same old way while horizontal wheels catch on track, crane can run advance in the same old way, this technology use than The safety hook of steel plate type is advanced, and stuck phenomenon does not occur for cart operation.

End carriage in the application crane connected using two balance beams (102) and a middle connecting rod (101) and Into, it is such to combine the supporting multigroup wheel of end carriage, the wheel group of small-wheel-diameter can be used, makes the sectional dimension of end carriage small, is configured to This is low, and can solve the problems, such as the small wheel load of crane large-tonnage.

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 It is clever, compact, assembly and disassembly it is convenient；The splined sleeve (811) of inside wheel loads inside wheel after individually processing, and can dismantle；Spline housing The small good processing of cylinder size, can make, long lifespan replacement cost is low of special high-abrasive material；The bearing of wheel is solid by logical lid connection It is fixed more firm；Hollow flange axle is hollow, and drive shaft passes therethrough；Ring flange (851) on hollow flange axle had both been used for End carriage is connected, is used to connect reducing motor again, positions reducing motor；The output shaft of reducing motor passes through hollow flange shaft hollow hole It is connected with the splined sleeve of inside wheel and directly drives wheel；Positioning flange collar on reducing motor, which is inlayed, is connected to hollow flange In the motor positioning hole (853) of axle, the connecting hole on reducing motor flange seat leads to the motor connection screw on hollow flange axle Bolt is crossed to be tightly coupled together；The reducing motor of this structure is especially adapted to planetary reduction gear, and structure is small, and noise is small；So slow down Connect not only simple but also firmly between motor and wheel, axiality is good, takes up space small, ensures that wheel steadily operates, operating is vibrated It is small, noise is small.

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 is by lashed cable (123) along choosing electric frame Upper cable wire rail (124) can run power supply back and forth with underslung trolley；Cable wire rail both ends are connected to two and choose electric frame (121), The appropriate height of electric frame is chosen by adjustment, lashed cable can be solved and most preferably hang height and position；Cable wire rail is to make track using steel wire rope, Cost is low；Girder track termination car bumper can limit the stroke of underslung trolley, increase safety.

Bearing block and suspension rod axis connection in the application rotating mechanism bear gravity by thrust bearing, and thrust bearing is arranged on Bearing block top, it is easy to dismount；The inner hole structure of bearing block is simply easy to process；Sleeve (43) is that high-abrasive material makees sliding bearing Use, reduce the fit clearance of suspension rod axle, increase rotational stabilization, increase the axiality of drive mechanism, cantilever member, which rotates, to be saved Power；Stop nut A band dust covers (441) give bearing proofing dust and protecting, while can seal the butter in bearing；Stop nut A is with hanging After bar axis connection, then the connection by bolt (46), anti-loose effect is played, ensures rotating mechanism safety；Drive in rotating mechanism Dynamic device output shaft is increased degree of flexibility, improved between drive device and suspension rod axle by shaft coupling (48) and suspension rod axis connection Malalignment regulating power.

Cantilever beam in the application, which is provided at both ends with buffing pad, can avoid electric block from moving back and forth impact along cantilever beam Or overtravel；Rotary limit device (58) is provided between cantilever member and underslung trolley, cantilever beam can be avoided excessively to rotate, i.e., not The rotation of more than 360 degree angles, prevent 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 underslung trolley it is ensuing；Cantilever member connects with suspension rod axle After connecing, after positioning is connected with suspension rod axle thread by stop nut B, then with bolt (99) through stop nut B and suspension rod axle Diameter connects, and avoids stop nut B from loosening, securely and reliably.

Brief description of the drawings

Fig. 1 is the application structural front view；

Fig. 2 is Fig. 1 side view (not representing horizontal wheel apparatus)；

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 horizontal wheel apparatus structural front view in the application；

Figure 11 is Figure 10 side view.

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 two underslung trolleys of band and the crane of balance beam, including double girder bridge 28；The double girder bridge includes end carriage 1, girder 2；The end carriage 1 is by two balance beams 102 and a middle connecting rod 101 It is formed by connecting；The cart actuating device 8 of one end connect band splined sleeve of balance beam 102, the other end are connected by motor car wheel Group 18；Two of the end carriage 1 respectively connects a set of horizontal wheel apparatus 6；The lower section of girder 2 is provided with track 21；The track by I-steel or H profile steel are formed；Two underslung trolleys 3 are connected on two tracks 21；The underslung trolley 3 is provided with whirler Structure 4；Suspension rod axle 42 in the rotating mechanism is connected with cantilever member 5；Rotation is provided between the cantilever member and underslung trolley 3 Turn stopping means 58；Electric block 10 is installed, electric block can move back and forth along outrigger horizontal on the cantilever member 5； The cantilever beam is in operation outside extended workshop below the girder, and can rotate in the horizontal plane；Two on double girder bridge Respectively electric frame 121 is chosen in connection one to bar end carriage 1, and two cable wire rails 124 of connection between electric frame, two cable wire rails are chosen described in two On be all connected with lashed cable 123.

As shown in figure 4, described rotating mechanism 4 includes drive device 40, bearing block 41, suspension rod axle 42, the bearing block 41 outsides are fixedly connected on underslung trolley 3；The lower end branch sleeve 43 of the inner hole of bearing seat；The middle part of suspension rod axle 42 is set There is the shaft shoulder 425；The suspension rod axle is connected through the center of bearing block 41 with thrust bearing 45, and the lower floor of the thrust bearing is connected to The top of bearing block, its upper strata are connected with stop nut A44, the stop nut A bands dust cover 441, stop nut A and suspension rod Axle thread connects, and is connected by the diameter of bolt 46 through stop nut A and suspension rod axle；Described drive device 40 by Motor is combined with vertical type speed reducer (change gear), and described drive device is connected on reductor bearing 401, and the reductor bearing is consolidated It is scheduled on underslung trolley 3；Described drive device output shaft connects one end of above-mentioned suspension rod axle by shaft coupling 48.

Described cantilever member 5 is connected on the suspension rod axle 42 in rotating mechanism by flat key 49 and stop nut B9；Institute The stop nut B and suspension rod axle stated is connected with bolt 99 again, and the bolt is through the straight of stop nut B and suspension rod axle Footpath.

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 wheel 81, reducing motor 83, the wheel is two-wheel edge, Described inside wheel connects a splined sleeve 811, and the described both sides of wheel 81 pass through bearing 82 and flange shaft 84, sky respectively Heart flange shaft 85 connects, and the ring flange of described flange shaft 84 and hollow flange axle 85 is connected to the two of balance beam 102 Side；The outer ring of bearing 82 is connected to logical lid 86, and the logical lid is bolted in the wheel face；Above-mentioned hollow method The ring flange 851 of blue axle 85 is provided with motor connection screw 852 and motor positioning hole 853；The reducing motor 83 is defeated with spline Shaft 831 is connected with above-mentioned inside wheel splined sleeve 811；Positioning flange collar 832 in flange seat on the reducing motor with Motor positioning hole 853 in hollow flange axle, which is inlayed, to be connected and is fastened by screw.

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.

Claims (7)

1. the crane of a kind of two underslung trolleys of band and balance beam, including double girder bridge (28)；The double girder bridge includes End carriage (1), girder (2)；It is characterized in that：The end carriage (1) is by two balance beams (102) and a middle connecting rod (101) it is formed by connecting；The cart actuating device (8) of described balance beam (102) one end connect band splined sleeve, other end connection Passive wheel group (18)；Two of the end carriage (1) respectively connects a set of horizontal wheel apparatus (6)；Rail is provided with below the girder (2) Road (21)；The track is made up of I-steel or H profile steel；Two underslung trolleys (3) are connected on two tracks (21)；It is described Underslung trolley (3) is provided with rotating mechanism (4)；Suspension rod axle (42) in the rotating mechanism is connected with cantilever member (5)；It is described Rotary limit device (58) is provided between cantilever member and underslung trolley (3)；Electric block is installed on the cantilever member (5) (10), electric block can move back and forth along outrigger horizontal；The cantilever beam is in below the girder outside extended workshop Operation, and can rotate in the horizontal plane；Respectively electric frame (121) is chosen in connection one to two end carriages (1) on double girder bridge, described in two Choose and two cable wire rails (124) are connected between electric frame, lashed cable (123) is all connected with two cable wire rails.

2. the crane of two underslung trolleys of a kind of band according to claim 1 and balance beam, it is characterised in that：It is described Rotating mechanism (4) include drive device (40), bearing block (41), suspension rod axle (42), it is fixed outside the bearing block (41) to connect It is connected on underslung trolley (3)；The lower end branch sleeve (43) of the inner hole of bearing seat；The shaft shoulder is provided with the middle part of the suspension rod axle (42) (425)；The suspension rod axle is connected through bearing block (41) center with thrust bearing (45), and the lower floor of the thrust bearing is connected to The top of bearing block, its upper strata are connected with stop nut A (44), stop nut A band dust cover (441), stop nut A with Suspension rod axle thread connects, and is connected by the diameter of bolt (46) through stop nut A and suspension rod axle；Described driving dress Put (40) to be combined by motor and vertical type speed reducer (change gear), described drive device is connected on reductor bearing (401), described to subtract Fast machine bearing is fixed on underslung trolley (3)；Described drive device output shaft connects above-mentioned suspension rod axle by shaft coupling (48) One end.

3. the crane of two underslung trolleys of a kind of band according to claim 1 and balance beam, it is characterised in that：It is described Cantilever member (5) include cantilever beam (51), Holder for hanging household utensiles (52)；The Holder for hanging household utensiles one sets connecting hole (521), described company Connect and keyway (522) is provided with hole；The Holder for hanging household utensiles other end is provided with operation window (523)；The operation window of the Holder for hanging household utensiles (52) this One one end for being welded on the cantilever beam (51)；The cantilever beam is made up of I-steel, or is made up of H profile steel, the cantilever Beam both ends are provided with buffing pad (511).

4. the crane of two underslung trolleys of a kind of band according to claim 1 and balance beam, it is characterised in that：It is described Cantilever member (5) be connected to by flat key (49) and stop nut B (9) on the suspension rod axle (42) of rotating mechanism；Described is anti- Loose nut B and suspension rod axle are connected with bolt (99) again, and the bolt (99) is through the straight of stop nut B and suspension rod axle Footpath.

5. the crane of two underslung trolleys of a kind of band according to claim 1 and balance beam, it is characterised in that：It is described Underslung trolley (3) include trolley frame (31), drive mechanism (34), roller devices (35)；The trolley frame by steel plate weld and It is welded with shaped steel combination into or by steel plate；The trolley frame both sides connect the drive mechanism (34) described in two sets respectively；Institute Drive mechanism is stated to be connected on trolley frame by balance plate (32) and bearing pin (33)；On the side of every set drive mechanism on trolley frame Reconnect a roller devices (35)；The roller devices are in immediately below track (21)；The drive mechanism (34) includes electricity Machine (341), two driving wheels (342), two followers (343), band gear, follower band list on driving wheel single-wheel edge and wheel rim Wheel rim；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, and motor is defeated Shaft band gear；The motor (341) is connected on left hanging plate, and motor output shaft connects with the external toothing of above-mentioned two driving wheel simultaneously Connect.

6. the crane of two underslung trolleys of a kind of band according to claim 1 and balance beam, it is characterised in that：It is described Cart actuating device (8) include wheel (81), reducing motor (83), the wheel be two-wheel edge, described inside wheel company A splined sleeve (811) is connect, described wheel (81) both sides pass through bearing (82) and flange shaft (84), hollow flange axle respectively (85) connect, the ring flange of described flange shaft (84) and hollow flange axle (85) is connected to the two of balance beam (102) Side；Bearing (82) outer ring is connected to logical lid (86), and the logical lid is bolted in the wheel face；Above-mentioned sky The ring flange (851) of heart flange shaft (85) is provided with motor connection screw (852) and motor positioning hole (853)；The electricity that slows down Machine (83) band splined output shaft (831) is connected with above-mentioned inside wheel splined sleeve (811)；Flange seat on the reducing motor In positioning flange collar (832) inlayed with the motor positioning hole (853) in hollow flange axle and be connected and fastened by screw.

7. the crane of two underslung trolleys of a kind of band according to claim 1 and balance beam, it is characterised in that：It is described Horizontal wheel apparatus (6) include horizontal wheels (61), wheel shaft (62), bearing (63), the horizontal wheels are on one side with wheel rim, and wheel rim court Lower installation；Two horizontal wheels are separately positioned on the both sides of track (601) tread, and gap coordinates；The horizontal wheels pass through axle Hold (64), shaft retaining ring (65), hole back-up ring (66) are connected with the wheel shaft (62)；Two wheel shafts pass through locking plate (67) respectively Be bolted on above-mentioned bearing (63)；Connection buffer (68) among the bearing；The bearing connects provided with end carriage Hole (69).