CN107777578A

CN107777578A - A kind of cantilever crane with underslung trolley

Info

Publication number: CN107777578A
Application number: CN201610709140.5A
Authority: CN
Inventors: 谢新华
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-08-24
Filing date: 2016-08-24
Publication date: 2018-03-09

Abstract

This application discloses a kind of cantilever crane with underslung trolley, including double girder bridge；The double girder bridge includes end carriage, girder；The end carriage both ends are designed with cart actuating device and safety hook；Track is provided with below girder；Track both ends connect car bumper device；Underslung trolley is connected on two tracks, and can be run along track；Underslung trolley is provided with rotating mechanism；Suspension rod axle in rotating mechanism is connected with cantilever member；Rotary limit device is connected with cantilever member；Electric block is installed on cantilever member, and can be moved back and forth along outrigger horizontal；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 the electrical connection on the lashed cable and underslung trolley on cable rail.

Description

A kind of cantilever crane with underslung trolley

Technical field

The application is related to crane field, more particularly to a kind of cantilever crane with underslung trolley.

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 cantilever crane with underslung trolley, and the lifting function passes through cart support rail Beam lifts by crane goods of this workshop across outer next door place directly below, also can be in this workshop in cart running track direction field outdoors The direct lifting cargo of institute, it is not necessary to transported by other transporting equipments, improve efficiency, and goods can be unloaded the ground for being placed on workshop needs Side, the crane can use in the workshop of low roofing.

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

A kind of cantilever crane with underslung trolley, the double girder bridge include end carriage 1, girder 2；It is characterized in that：Institute State the both ends of end carriage 1 and be designed with the cart actuating device 8 with connecting shaft wheel；The lower section of girder 2 is provided with track 21；The track two End connection car bumper device 70；Underslung trolley 3 is connected on two tracks 21, and can be run along track；The suspension is small Car 3 is provided with rotating mechanism 4；Suspension rod axle 42 in the rotating mechanism is connected with cantilever member 5；The cantilever member and suspension Rotary limit device 58 is provided between dolly 3；Electric block 10 is installed, electric block can be along cantilever on the cantilever member 5 Beam horizontal traversal；The cantilever beam is in operation outside extended workshop below the girder, and can rotate in the horizontal plane； The above-mentioned both ends of end carriage 1 respectively set a safety hook 11；Electric frame 121 is chosen provided with some at the top of the double girder bridge, is chosen below electric frame Cable rail 124 is led in connection；The lashed cable 123 led on cable rail and the electrical connection on the underslung trolley 3.

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 one end from Stretch at the center of fixed cover 43；The external diameter of bearing block 41 is fixedly connected on underslung trolley 3；Described drive device 40 Combined by motor and vertical type speed reducer (change gear), the flanged disk of the vertical type speed reducer (change gear) and output shaft, described drive device pass through Bolt 48 is fixedly connected with above-mentioned blind flange 47, and the output shaft of the drive device is connected to above-mentioned suspension rod axle by flat key insertion In the axis hole of one 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, the described center of stop nut 9 is provided with screw thread 91, and described stop nut external diameter opens up a through hole 92, Multiple blind holes 93 are also opened up on described stop nut external diameter and conveniently pull nut for inserting lever.

Wherein, described rotary limit device 58 includes travel switch 581 and safety ruler 583, and the safety ruler is welded on On the Holder for hanging household utensiles 52 of cantilever member, described travel switch is connected by bolt with switch bracket 582；The switch bracket welding Below the trolley frame 31 of underslung trolley.

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 car bumper device 70 includes left fixed seat 701, right fixed seat 702, buffer 703, the left fixation Seat and right fixed seat are casting or are process with steel plate, and left fixed seat symmetrically makes with both right fixed seats；It is described right solid Reservation side opens up clip slot 7021；Screwed hole 7022 is opened up above the clip slot；Connecting bolt and stop nut on screwed hole 704；Side opens up connecting hole 7023 below the clip slot；The right fixed seat opens up buffer peace on the side beside clip slot Fill hole 7024；Two buffers 703 are connected in above-mentioned left fixed seat and right fixed seat；The left fixed seat and the right side Fixed seat is connected on two sides Ji 211 of track 21 by screw rod 705 and nut.

Wherein, described cart actuating device 8 includes connecting shaft wheel 81, inner flange seat 82, reducing motor 83, described company Axle wheel 81 is double wheel rims, and connecting shaft wheel center is provided with axis hole 811, and the shaft extension 812 of the connecting shaft wheel both sides connects respectively Then the inner ring of bearing 84；The outer ring of the bearing is connected on inner flange seat 82；Ring flange on two inner flange seats It is connected to the inwall of the both sides of end carriage 1；The described output shaft 831 of reducing motor 83 is connected to the axis hole of above-mentioned connecting shaft wheel In 811, the fixing hole on the reducing motor top is connected by bolt and cushion pad 85 with fixed seat 86；The fixed seat 86 is welded It is connected on end carriage.

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.

Safety hook is set on end carriage in the application crane, crane can be avoided to tumble, ensures safety；When cantilever beam mistake During load, for end carriage while upwarping, now the eave tile of safety hook (11) can catch on the upper cover plate Ji edge of cart support rail beam (12), avoid Heavy-duty machine, which is tumbled, ensures safety.

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, is especially suitable for path wheel, inner flange seat It is that can stand very big axial float inner flange seat all without departing from position, inner flange that ring flange, which is connected to benefit on the inside of end carriage, The connecting bolt of seat need not bear big axial tension, and wheel alignment is good；The output shaft of reducing motor can be flat key axle or Splined shaft or double bond axle, according to moment of torsion different size situation, rationally coordinate with wheel axis hole；The output shaft and motor of reducing motor Axle can be that parallel or horizontal direction is vertical or vertical direction is vertical, according to space situation, select different installation forms, To be adapted to normal safe operation；Reducing motor is connected on end carriage by cushion pad, due to the cushioning effect of cushion pad, is alleviated Reducing motor starts, braking produces impact shock, protects drive device.

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 position is adjustable, and its benefit is to allow The position that underslung trolley is run on crane runway the position of scene adjustment car bumper device, allows outstanding according to workshop condition situation Hang dolly and be rightly parked in most suitable position, and blocked by car stop upper bumper, reduce impact, increase trolley travelling peace Entirely.

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；Cantilever beam, which is provided at both ends with buffing pad, can avoid electric block along outstanding Arm beam moves back and forth impact or overtravel；Rotary limit device (58) is provided between cantilever member and underslung trolley, can avoid hanging Arm beam excessively rotates, i.e. no more than 360 degree angle rotations, prevents the cable (6) of electric block to be wrapped in hanging in cantilever member Be torn on hanging seat (52) because the cable (6) of electric block be draw from the junction box on trolley frame it is ensuing；Safety ruler It is that safety ruler can rotate with cantilever member, and travel switch is fixed on dolly to be welded on benefit on the Holder for hanging household utensiles of cantilever member Motionless under frame, its cable is passed directly to be placed on the control cabinet on trolley frame, and the relatively small vehicle frame of travel switch is motionless to be not easy failure；Rotation Drive device (40) output shaft insertion in rotation mechanism is connected in the axis hole of suspension rod axle one end, and power drive is simple in construction, passes Dynamic accessory is few, mechanism take up space it is small, it is compact-sized；After stop nut connects with suspension rod axle thread, then there is bolt (99) to pass through The diameter of stop nut and suspension rod axle connects, and avoids stop nut from unclamping, and securely and reliably, the blind hole on stop nut can be square Just lever inserts, and it is light to pull nut, easy disassembly and maintenance.

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 stop nut structural representation in the application；

Fig. 6 is cantilever member schematic diagram in the application；

Fig. 7 is rotary limit device schematic diagram in the application；

Fig. 8 is underslung trolley structural front view in the application；

Fig. 9 is Fig. 8 side view；

Figure 10 is the G direction views (trolley driving mechanism) in Fig. 8；

Figure 11 is car bumper device schematic diagram in the application；

Figure 12 is cart actuating 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 cantilever crane with underslung trolley, the double girder bridge include end carriage 1, master Beam 2；It is characterized in that：The both ends of end carriage 1 are designed with the cart actuating device 8 with connecting shaft wheel；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, and can be along rail Run in road；The underslung trolley 3 is provided with rotating mechanism 4；Suspension rod axle 42 in the rotating mechanism is connected with cantilever member 5； Rotary limit device 58 is provided between the cantilever member and underslung trolley 3；Electric block 10 is installed on the cantilever member 5, Electric block can move back and forth along outrigger horizontal；The cantilever beam is in operation outside extended workshop below the girder, And it can rotate in the horizontal plane；The above-mentioned both ends of end carriage 1 respectively set a safety hook 11；Some choose is provided with the top of the double girder bridge Electric frame 121, choose connection below electric frame and lead cable rail 124；The lashed cable 123 led on cable rail with it is electric on the underslung trolley 3 Connection.

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, described Bearing A and bearing B is connected to the both ends for stating bearing block, described suspension rod axle by bolt and fixed cover 43 and blind flange 47 respectively Stretched from the center of fixed cover 43 one end；The external diameter of bearing block 41 is fixedly connected on underslung trolley 3；Described driving Device 40 is combined by motor and vertical type speed reducer (change gear), the flanged disk of the vertical type speed reducer (change gear) and output shaft, described driving dress Put and be fixedly connected by bolt 48 with above-mentioned blind flange 47, the output shaft of the drive device is connected to above-mentioned by flat key insertion In the axis hole of suspension rod axle one end.

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, the described center of stop nut 9 is provided with screw thread 91, described stop nut external diameter opens up one and led to Hole 92, multiple blind holes 93 are also opened up on described stop nut external diameter it is used to inserting lever and conveniently pull nut.

As shown in fig. 6, 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. 7, described rotary limit device 58 includes travel switch 581 and safety ruler 583, the safety ruler weldering It is connected on the Holder for hanging household utensiles 52 of cantilever member, described travel switch is connected by bolt with switch bracket 582；The switch bracket It is welded on below the trolley frame 31 of underslung trolley.

As shown in Fig. 8, Fig. 9, Figure 10, 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 11, described car bumper device 70 includes left fixed seat 701, right fixed seat 702, buffer 703, described Left fixed seat and right fixed seat are casting or are process with steel plate, and left fixed seat symmetrically makes with both right fixed seats；Institute State right fixed seat side and open up clip slot 7021；Screwed hole 7022 is opened up above the clip slot；Connecting bolt and locking on screwed hole Nut 704；Side opens up connecting hole 7023 below the clip slot；The right fixed seat opens up buffering on the side beside clip slot Device mounting hole 7024；Two buffers 703 are connected in above-mentioned left fixed seat and right fixed seat；The left fixed seat It is connected to right fixed seat by screw rod 705 and nut on two sides Ji 211 of track 21.

As shown in figure 12, described cart actuating device 8 includes connecting shaft wheel 81, inner flange seat 82, reducing motor 83, institute The connecting shaft wheel 81 stated is double wheel rims, and connecting shaft wheel center is provided with axis hole 811, the shaft extension 812 of the connecting shaft wheel both sides It respectively connected the inner ring of bearing 84；The outer ring of the bearing is connected on inner flange seat 82；On two inner flange seats Ring flange is connected to the inwall of the both sides of end carriage 1；The described output shaft 831 of reducing motor 83 is connected to above-mentioned connecting shaft wheel In axis hole 811, the fixing hole on the reducing motor top is connected by bolt and cushion pad 85 with fixed seat 86；The fixed seat 86 are welded on end carriage.

Claims

1. a kind of cantilever crane with underslung trolley, including double girder bridge (28)；The double girder bridge includes end carriage (1), master Beam (2)；It is characterized in that：End carriage (1) both ends are designed with cart actuating device (8) and safety hook with connecting shaft wheel (11)；Track (21) is provided with below the girder (2)；The track both ends connection car bumper device (70)；Two tracks (21) underslung trolley (3) is connected on, and can be run along track；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)；Rotation is provided between the cantilever member and underslung trolley (3) Turn stopping means (58)；Electric block (10) is installed, electric block can be along outrigger horizontal back and forth on the cantilever member (5) Motion；The cantilever beam is in operation outside extended workshop below the girder, and can rotate in the horizontal plane；The twin beams bridge Top of the trellis chooses electric frame (121) provided with some, chooses connection below electric frame and leads cable rail (124)；The lashed cable (123) led on cable rail with Electrical connection on the underslung trolley (3).

A kind of 2. cantilever crane with underslung trolley according to claim 1, it is characterised in that：Described rotating mechanism (4) drive device (40), bearing block (41), suspension rod axle (42) are included, the suspension rod axle is connected to institute by thrust bearing (45) It is internal to state bearing block (41), the suspension rod axle reconnects bearing A (44) and bearing B (46), the bearing A and bearing B lead to respectively Cross bolt and fixed cover (43) and blind flange (47) is connected to the both ends of above-mentioned bearing block, described suspension rod axle one end is from described solid Stretch at fixed lid (43) center；Bearing block (41) external diameter is fixedly connected on underslung trolley (3)；Described drive device (40) combined by motor and vertical type speed reducer (change gear), the flanged disk of the vertical type speed reducer (change gear) and output shaft, described drive device It is fixedly connected by bolt (48) with above-mentioned blind flange (47), the output shaft of the drive device is connected to by flat key insertion In the axis hole for stating suspension rod axle one end.

A kind of 3. cantilever crane with underslung trolley according to claim 1, it is characterised in that：Described cantilever member (5) cantilever beam (51), Holder for hanging household utensiles (52) are included；The Holder for hanging household utensiles one sets connecting hole (521), is provided with described connecting hole Keyway (522)；The Holder for hanging household utensiles other end is provided with operation window (523)；This head of the operation window of the Holder for hanging household utensiles (52) 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, and the cantilever beam both ends are provided with Buffing pad (511).

A kind of 4. cantilever crane with underslung trolley according to claim 1, it is characterised in that：Described cantilever member (5) it is connected to by flat key (49) and stop nut (9) on the suspension rod axle (42) of rotating mechanism；Described stop nut and suspension rod Axle is connected with bolt (99) again, and the bolt (99) passes through the diameter of stop nut and suspension rod axle.

A kind of 5. cantilever crane with underslung trolley according to claim 4, it is characterised in that：Described stop nut (9) center is provided with screw thread (91), and described stop nut external diameter opens up a through hole (92), gone back on described stop nut external diameter Open up multiple blind holes (93).

A kind of 6. cantilever crane with underslung trolley according to claim 1, it is characterised in that：Described rotary stopper Device (58) includes travel switch (581) and safety ruler (583), and the safety ruler is welded on the Holder for hanging household utensiles (52) of cantilever member On, described travel switch is connected by bolt with switch bracket (582)；The switch bracket is welded on the dolly of underslung trolley Frame (31) is below.

A kind of 7. cantilever crane with underslung trolley according to claim 1, it is characterised in that：Described underslung trolley (3) trolley frame (31), drive mechanism (34), roller devices (35) are included；The trolley frame is welded by steel plate or by steel plate It is welded with shaped steel combination；The trolley frame both sides connect the drive mechanism (34) described in two sets respectively；The drive mechanism It is connected to by balance plate (32) and bearing pin (33) on trolley frame；On trolley frame one is reconnected on the side of every set drive mechanism Roller devices (35)；The roller devices are in immediately below track (21)；The drive mechanism (34) includes motor (341), two Individual driving wheel (342), two followers (343), band gear on driving wheel single-wheel edge and wheel rim, follower band single-wheel edge；It is described Two driving wheels are connected on left hanging plate (344), and described two followers are connected on right hanging plate (345)；The left hanging plate with Right hanging plate is connected by two studs and nut (346)；Above-mentioned motor (341) carries reductor, motor output shaft band tooth Wheel；The motor (341) is connected on left hanging plate, and motor output shaft is connected with above-mentioned two driving wheel external toothing simultaneously.

A kind of 8. cantilever crane with underslung trolley according to claim 1, it is characterised in that：Described car bumper device (70) left fixed seat (701), right fixed seat (702), buffer (703) are included, the left fixed seat and right fixed seat are casting Or be process with steel plate, and left fixed seat symmetrically makes with both right fixed seats；The right fixed seat side opens up clip slot (7021)；Screwed hole (7022) is opened up above the clip slot；Connecting bolt and stop nut (704) on screwed hole；The clip slot Lower section side opens up connecting hole (7023)；The right fixed seat opens up buffer mounting hole on the side beside clip slot (7024)；Two buffers (703) are connected in above-mentioned left fixed seat and right fixed seat；The left fixed seat and the right side Fixed seat is connected on two sides Ji (211) of track (21) by screw rod (705) and nut.

A kind of 9. cantilever crane with underslung trolley according to claim 1, it is characterised in that：Described cart driving Device (8) includes connecting shaft wheel (81), inner flange seat (82), reducing motor (83), wherein：Described connecting shaft wheel (81) is double Wheel flange wheel, connecting shaft wheel center are provided with axis hole (811), and the shaft extension (812) of the connecting shaft wheel both sides respectively connected bearing (84) inner ring；The outer ring of the bearing is connected on inner flange seat (82)；Ring flange difference on two inner flange seats It is connected to the inwall of end carriage (1) both sides；Described reducing motor (83) output shaft (831) is connected to the axis hole of above-mentioned connecting shaft wheel (811) in, the fixing hole on the reducing motor top is connected by bolt and cushion pad (85) with fixed seat (86)；The fixation Seat (86) is welded on end carriage (1).