CN108263967A - A kind of two underslung trolleys of band and the adjustable crane of cantilever beam car bumper - Google Patents

Abstract

This application discloses a kind of two underslung trolleys of band and the adjustable crane of cantilever beam car bumper, the double girder bridge including carrying end carriage, girder；End carriage both ends are designed with cart actuating device and safety hook；Two underslung trolleys are connected on girder lower track；Underslung trolley is equipped with the rotating mechanism being driven with elevating arc；Sunpender axis lower end in rotating mechanism is connect with cantilever member, upper end connection safety ruler；Two travel switches are connected to above trolley frame；Cantilever beam one end on the cantilever member be connected to electric block simultaneously can horizontal movement, other end hanging balancing weight；Described cantilever beam one end connects car bumper device, and car bumper device position is adjustable；The cantilever beam is in operation outside extended workshop below the girder, and can rotate in the horizontal plane.

Description

A kind of two underslung trolleys of band and the adjustable crane of cantilever beam car bumper

Technical field

This application involves two underslung trolleys of crane field more particularly to a kind of band and adjustable of cantilever beam car bumpers Heavy-duty 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 trolley Upper hang carries out lifting cargo, and trolley can only back and forth be run along crane twin beams, and crane can only be along workshop both sides It is run back and forth across the cart track on column, the cargo range 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 cargo of this horizontal edge needs lifting, suspension hook just generates oblique pull, then from this The article (such as workshop outdoors, across outer) of far point cannot lift except a plane, can only turn at this time by other transporting equipments Fortune, usually drives workshop by automobile and lifting cargo is carried out under suspension hook, some vehicles are opened to come in this workshop and next door workshop Between be laterally laid with track, trolley special is allowed to reach suspension hook and gets off to join cargo, some is in workshop doorway (or workshop passageway) A special cantilever crane is set up, scheduling is transported through to the cargo except workshop, first cargo is lifted up into and is hung in this workshop crane The place that hook is got at, then again by crane this cargo handling to the other stations in workshop, what is used under this operating mode shows There is bridge crane, cannot directly join cargo with next door workshop, must be brought quite not by other transporting equipment schedule jobs Just, manpower and materials waste is also generated.

Invention content

The application is designed to provide a kind of two underslung trolleys of band and the adjustable crane of cantilever beam car bumper, the lifting Machine can simultaneously by workshop both sides cart support rail beam directly below this workshop of unloading across the cargo in outer next door place, Neng Gou Operation simultaneously outside two end bay of workshop, also can be in this workshop in cart running track direction direct unloading cargo in place outdoors, especially It is suitble to the elongate article inside and outside handling workshop；It need not be transported by other transporting equipments, improve efficiency；The crane can be The workshop of low roofing uses；The crane is not tumbled, and the cantilever beam rotating speed of the crane can accurately reach user demand.

In order to achieve the above objectives, the application is realized using following technology：

A kind of two underslung trolleys of band and the adjustable crane of cantilever beam car bumper, including double girder bridge 28；The twin beams bridge Frame includes end carriage 1, girder 2；It is characterized in that：1 both ends of end carriage are designed with 8 He of cart actuating device with spline tooth wheel Safety hook 11；2 lower section of girder is equipped with i-beam track 21；The track both ends connect car bumper device 70；Two rails Two underslung trolleys that can be run 3 are connected on road 21；The underslung trolley 3 is equipped with the rotating mechanism 4 being driven with elevating arc； 42 lower end of sunpender axis in the rotating mechanism is connect with cantilever member 5；Sunpender axis upper end connects safety ruler 583；The safety The the meeting and discussing to touch with travel switch 581 of ruler connect, and two travel switches are connected to above trolley frame 31；The cantilever structure 51 one end of cantilever beam on part is connected to electric block 10 and can be moved along outrigger horizontal, other end hanging balancing weight 9；Counterweight changeable on the balance weight；Described cantilever beam one end connects car bumper device 70, and car bumper device position is adjustable；Institute It states cantilever beam and is in operation outside extended workshop below the girder, and can rotate in the horizontal plane.

Wherein, the rotating mechanism 4 include driving device 40, small elevating arc 402, big elevating arc 403, bearing block 41, Sunpender axis 42；Described sunpender axis one end is equipped with screw thread, and screw thread is equipped with the through-hole 422 by diameter；The sunpender axis is by pushing away Power bearing 45 is connected to inside the bearing block 41, the sunpender axis reconnect bearing A44 and bearing B46, the bearing A and Bearing B is connected to the both ends of above-mentioned bearing block, described sunpender axis one end by bolt and fixed cover 43 and blind flange 47 respectively It is stretched from the fixed cover center, the other end is stretched from above-mentioned blind flange center；The bearing block 41 passes through above-mentioned flange Lid 47 is bolted on trolley frame 31；The driving device 40 is composed of motor and horizontal speed-reducer, the drive Dynamic device is mounted on trolley frame 31；The driving device output shaft is connected to small elevating arc 402, the small elevating arc with it is big 403 external toothing of elevating arc connects, and the big elevating arc is connected on above-mentioned sunpender axis 42.

Wherein, the underslung trolley 3 includes trolley frame 31, driving mechanism 34, roller devices 35；The trolley frame is by steel Plate is welded or is welded by steel plate and shaped steel combination；The trolley frame both sides connect the driving mechanism described in two sets respectively 34；The driving mechanism is connected to by balance plate 32 and axis pin 33 on trolley frame；On the side of every set driving mechanism on trolley frame Side reconnects a roller devices 35；The roller devices are in immediately below track 21；The driving 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 It states two driving wheels to be connected in 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 speed reducer, motor output shaft band gear；It is described Motor 341 is connected in left hanging plate, and motor output shaft is connect simultaneously with above-mentioned two driving wheel external toothing.

Wherein, the car bumper device 70 includes left fixed seat 701, right fixed seat 702, buffer 703, the left fixation Seat and right fixed seat are process for casting or with steel plate, and both left fixed seat and right fixed seat symmetrically make；It is described right solid Reservation side opens up clip slot 7021；Threaded hole 7022 is opened up above the clip slot；Bolt and stop nut are connected on threaded 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 to by screw rod 705 and nut on two sides Ji 211 of track.

Wherein, the cart actuating device 8 includes wheel 81, decelerating motor 83, and the wheel is two-wheel edge, described Inside wheel is equipped with spline tooth 811, and 81 both sides of wheel are connected respectively by bearing 82 and flange shaft 84, hollow flange axis 85 It connects, the ring flange of the flange shaft 84 and hollow flange axis 85 is connected to the both sides of end carriage 1；82 outer ring of bearing leads to Baffle ring 86 is crossed to be fixed on the wheel；The ring flange 851 of above-mentioned hollow flange axis 85 is equipped with motor connecting screw hole 852；Institute Decelerating motor 83 is stated to connect with above-mentioned wheel inner spline gear 811 with splined output shaft 831；In flange seat on the decelerating motor Positioning concave ring 832 inlayed with 851 outer diameter of ring flange in hollow flange axis connect and by screw fasten.

Wherein, the eave tile of the safety hook 11 is connect with the lower surface gap of 12 upper cover plate Ji edge of cart support rail beam.

Wherein, the safety ruler 583 includes swing rod 5832 and meets and discusses 5831, the 5831 setting cambers of meeting and discussing Shape, the both ends met and discussed are set as symmetric bending shape；Described 5832 one end of swing rod is equipped with splined hole 5833.

The advantageous effect of the application is as described below：

Two underslung trolleys (3) are configured in the application crane, underslung trolley can reach workshop two respectively when needing 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 cargo；Two underslung trolleys are not only able to be in crane both ends unloading cart running track line side workshop respectively Cargo, parted hair operation；And it is capable of the next door workshop cargo of unloading cart traffic direction endpoint；Two cantilever beams can stretch out simultaneously Operation outside workshop especially facilitates cooperation to hang elongated, the soft object of lift, is rotated by two the different of cantilever beam, object handling To suitable position；Because cantilever beam is set to 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 the workshop operation outdoors that can directly stretch out cart traffic direction；After lifting cargo, by electronic Movement of the cucurbit along cantilever beam or the rotation by cantilever member are big by the movement of underslung trolley or by crane The movement of vehicle or by aforementioned four integrated motion, can hang onto the cargo of lifting in the place of this workshop needs；With every Wall workshop or workshop can need not borrow the transhipment of other transporting equipments when carrying out cargo handing-over outdoors, improve efficiency.

Cantilever beam one end connects electric block (10) handling weight, other end hanging balancing weight (9), the two in the application A weight balance part can reduce the tilting moment of crane, improve lifting capacity, while increase crane stability and safety Property.

Setting trolley track (21), underslung trolley are suspended on girder track, make below girder in the application crane Its installation space position reduces, and is particularly suitable for roofing with crane apart from small workshop.

Cantilever beam, electric block (10) suspension hook therein are equipped on 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) is chosen equipped with two groups of moveable lashed cables (123) on the application loading bridge, it is outstanding to two respectively Trolley (3) is hung to power.

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, end carriage upwarps on one side, and the eave tile of safety hook (11) can catch on the upper cover plate Ji edge of cart support rail beam (12) at this time, avoid Heavy-duty machine, which is tumbled, ensures safety；Safety hook can be cut by steel plate into being connected on end carriage, and construction is most simple, at low cost.

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 generate idle running phenomenon；Cart actuating device (8) structure of the application is new It is clever, compact, assembly and disassembly it is convenient；Hollow flange axis is hollow, and drive shaft passes therethrough；Ring flange (851) on hollow flange axis Not only for connecting end carriage, but also be used to connect decelerating motor, decelerating motor is positioned；The output shaft of decelerating motor passes through hollow flange axis Hollow hole connect with wheel spline pair and directly drives wheel；Positioning concave ring on decelerating motor is snugly connected to hollow In the flange external diameter of flange shaft, the connecting hole on decelerating motor flange seat passes through with the motor connecting screw hole on hollow flange axis Bolt is tightly coupled together；The decelerating motor of this structure is especially adapted to planetary reduction gear, and structure is small, and noise is small；Slow down electricity in this way Connect not only simple but also securely between machine and wheel, concentricity is good, takes up space small, ensures that wheel steadily operates, operate it is with small vibration, Noise is small.

Underslung trolley (3) in the application can be moved back and forth along girder both ends, be suitable for big width workshop and used；Suspension Driving mechanism (34) on trolley can be in whole set procurement standarized component on the market, mating facility；Driving wheel, quilt in driving mechanism Driving wheel is connected on the edge of track (21) both sides Ji, ensures that underslung trolley is not fallen, so as to ensure that crane is safe to use；It is outstanding It hangs trolley side two sets of driving mechanisms of installation to be connected on same track, and roller devices is installed beside every set driving mechanism (35), be advantageous in that can avoid it is single drive be possible to because trolley slightly upwarp on one side adhesion wheel not rail due to the race that generates not Dynamic phenomenon, double drive ensure that trolley travelling is smooth；Roller devices can limit the degree that underslung trolley upwarps on one side, ensure that suspension is small Vehicle is stablized, 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 be connect with leading cable rail, keeps leading the rigidity of cable rail, it is ensured that hang Cable coaster slides smooth in cable rail is led.

Car bumper device (70) flexible connection on the application middle girder track is in orbit, and position is adjustable, and benefit is to allow The extreme position that underslung trolley is run on crane runway adjusts car bumper device fixed position, now according to workshop condition situation Field flexible modulation, scene do not have to gas cutting and are welded；It is blocked when underslung trolley runs to the limit and by car bumper upper bumper, reduces punching It hits, increases trolley travelling safety.

Cantilever beam (51) setting car bumper device (70) in the application cantilever member, the buffer on car stop can avoid electronic Cucurbit moves back and forth impact along cantilever beam or overtravel is run；This car bumper device is to be movably connected on a cantilever beam, position Put flexibly it is adjustable, benefit be according to the cargo size cases lifted, can flexible modulation car bumper device fixed position, essence It is the effective breadth for adjusting cantilever beam, small tonnage amplitude can be big, and large-tonnage is with by a small margin；Crane is efficiently used, ensures safety.

Rotating mechanism in the application is equipped with rotary limit device, by safety ruler (583) and two travel switches (581) Composition, safety ruler are mounted on sunpender axis upper end, and travel switch is mounted on trolley frame upper surface, is more convenient installation and adjustment；Safety ruler (583) when swing rod one end is advantageous in that spline axis connection corresponding on sunpender axis equipped with splined hole (5833), the angle of safety ruler Degree direction is adjusted well, and sunpender axis can be inserted in the direction arbitrarily needed and is fixed, keeps most suitable position；There is rotation Limiting device can avoid cantilever beam from excessively rotating, and the cable (6) of electric block is prevented to be wrapped in Holder for hanging household utensiles in cantilever member (52) be torn on because the cable (6) of electric block be draw from the junction box on trolley frame it is next.

Have the gear auxiliary driving of a pair of of elevating arc transmission in rotating mechanism in the application crane, by big elevating arc, The different numbers of teeth setting of small elevating arc, can meet precise requirements of the user to the cantilever beam rotary speed of crane, avoid directly The cantilever beam rotating speed and the large error of actual demand that the general speed of selection standard speed reducer compares and generates；It is passed using elevating arc It is dynamic, the driving device in rotating mechanism can be made to reduce mounting height using horizontal speed-reducer.

Bearing block and sunpender axis connection in the application rotating mechanism bear lifting power by thrust bearing, and sunpender axis is by bearing A and bearing B limits radial position up and down, ensures that sunpender axis can bear very big axial force and not deviate radially, so as to ensure Driving device concentricity is good, and hinged cantilever component is laborsaving；After stop nut in cantilever member connection is connected with sunpender axle thread, The diameter for having bolt (99) across stop nut and sunpender axis again connects, and stop nut is avoided to unclamp, securely and reliably.

Description of the drawings

Fig. 1 is the application structural front view；

Fig. 2 is the side view of Fig. 1；

Fig. 3 is the vertical view of Fig. 1；

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

Fig. 5 is underslung trolley structural front view in the application；

Fig. 6 is the side view of Fig. 5；

Fig. 7 is the G direction views (trolley driving mechanism) in Fig. 5；

Fig. 8 is car bumper device schematic diagram in the application；

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

Figure 10 is safety ruler schematic diagram in the application.

Specific embodiment

In conjunction with attached drawing, the application specific 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 adjustable crane of cantilever beam car bumper, including twin beams Crane span structure 28；The double girder bridge includes end carriage 1, girder 2；1 both ends of end carriage are designed with the cart driving with spline tooth wheel Device 8 and safety hook 11；2 lower section of girder is equipped with i-beam track 21；The track both ends connect car bumper device 70；Two Two underslung trolleys that can be run 3 are connected on the track 21；The underslung trolley 3 is equipped with the rotation being driven with elevating arc Mechanism 4；42 lower end of sunpender axis in the rotating mechanism is connect with cantilever member 5；Sunpender axis upper end connects safety ruler 583；Institute Meeting and discussing to touch with travel switch 581 and connecting for safety ruler is stated, two travel switches are connected to above trolley frame 31；It is described 51 one end of cantilever beam on cantilever member is connected to electric block 10 and can be moved along outrigger horizontal, and other end suspension is flat Weight hammer 9；Counterweight changeable on the balance weight；Described cantilever beam one end connects car bumper device 70, and car bumper device position It is adjustable；The cantilever beam is in operation outside extended workshop below the girder, and can rotate in the horizontal plane.

The eave tile of the safety hook 11 is connect with the lower surface gap of 12 upper cover plate Ji edge of cart support rail beam.

As shown in figure 4, the rotating mechanism 4 includes driving device 40, small elevating arc 402, big elevating arc 403, bearing Seat 41, sunpender axis 42；Described sunpender axis one end is equipped with screw thread, and screw thread is equipped with the through-hole 422 by diameter；The sunpender axis leads to It crosses thrust bearing 45 to be connected to inside the bearing block 41, the sunpender axis reconnects bearing A44 and bearing B46, the axis 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, the sunpender axis One end is stretched from the fixed cover center, and the other end is stretched from above-mentioned blind flange center；The bearing block 41 is by above-mentioned Blind flange 47 is bolted on trolley frame 31；The driving device 40 is composed of motor and horizontal speed-reducer, described Driving device be mounted on trolley frame 31 on；The driving device output shaft is connected to small elevating arc 402, the small elevating arc It is connect with big 403 external toothing of elevating arc, the big elevating arc is connected on above-mentioned sunpender axis 42.

The cantilever member 5 is connected to by flat key 49 and stop nut 9 on the sunpender axis 42 in rotating mechanism；It is described Stop nut and sunpender axis connected again with bolt 99, and the bolt passes through the diameter of stop nut and sunpender axis.

As shown in Fig. 5, Fig. 6, Fig. 7, the underslung trolley 3 includes trolley frame 31, driving 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 The driving mechanism 34；The driving mechanism is connected to by balance plate 32 and axis pin 33 on trolley frame；Every on trolley frame The side for covering driving 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 in 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 speed reducer, motor output shaft Band gear；The motor 341 is connected in left hanging plate, and motor output shaft is connect simultaneously with above-mentioned two driving wheel external toothing.

As shown in figure 8, the car bumper device 70 includes left fixed seat 701, right fixed seat 702, buffer 703, it is described Left fixed seat and right fixed seat are process for casting or with steel plate, and both left fixed seat and right fixed seat symmetrically make；Institute It states right fixed seat side and opens up clip slot 7021；Threaded hole 7022 is opened up above the clip slot；Bolt and locking is connected on threaded 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 on two sides Ji 211 of track by screw rod 705 and nut with right fixed seat.

As shown in figure 9, the cart actuating device 8 includes connecting shaft wheel 81, inner flange seat 82, decelerating motor 83, institute The connecting shaft wheel 81 stated is double wheel rims, and connecting shaft wheel center is equipped with axis hole 811, and the axis of the connecting shaft wheel both sides stretches 812 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 inner wall of 1 both sides of end carriage；83 output shaft 831 of decelerating motor is connected to above-mentioned connecting shaft wheel In axis hole 811, the mounting hole on the decelerating motor top is connect by bolt and cushion pad 85 with fixed seat 86；The fixed seat 86 are welded on end carriage.

As shown in Figure 10, the safety ruler 583 includes swing rod 5832 and meets and discusses 5831, and described meet and discuss 5831 is arranged to Arc shape, the both ends met and discussed are set as symmetric bending shape；Described 5832 one end of swing rod is equipped with splined hole 5833.

Claims (6)

1. a kind of two underslung trolleys of band and the adjustable crane of cantilever beam car bumper, including double girder bridge (28)；The twin beams bridge Frame includes end carriage (1), girder (2)；It is characterized in that：End carriage (1) both ends are designed with the cart driving with spline tooth wheel Device (8) and safety hook (11)；I-beam track (21) is equipped with below the girder (2)；The track both ends connection car bumper dress It puts (70)；Two underslung trolleys that can be run (3) are connected on two tracks (21)；The underslung trolley (3) is equipped with Rotating mechanism (4) with elevating arc transmission；Sunpender axis (42) lower end in the rotating mechanism is connect with cantilever member (5)；It hangs Bar axis upper end connection safety ruler (583)；The the meeting and discussing to touch with travel switch (581) of the safety ruler connect, two rows Cheng Kaiguan is connected to trolley frame (31) above；Cantilever beam (51) one end on the cantilever member is connected to electric block (10) simultaneously And it can be moved along outrigger horizontal, other end hanging balancing weight (9)；Counterweight changeable on the balance weight；It is described outstanding Arm beam one end connection car bumper device (70), and car bumper device position is adjustable；The cantilever beam is in extended below the girder Operation outside workshop, and can rotate in the horizontal plane.

2. two underslung trolleys of a kind of band according to claim 1 and the adjustable crane of cantilever beam car bumper, feature exist In：The rotating mechanism (4) including driving device (40), small elevating arc (402), big elevating arc (403), bearing block (41), Sunpender axis (42)；Described sunpender axis one end is equipped with screw thread, and screw thread is equipped with the through-hole (422) by diameter；The sunpender axis leads to It crosses thrust bearing (45) and is connected to the bearing block (41) inside, the sunpender axis reconnects bearing A (44) and bearing B (46), the bearing A and bearing B is connected to the two of above-mentioned bearing block by bolt and fixed cover (43) and blind flange (47) respectively End, described sunpender axis one end are stretched from the fixed cover center, and the other end is stretched from above-mentioned blind flange center；The axis Bearing (41) is bolted to by above-mentioned blind flange (47) on trolley frame (31)；The driving device (40) is by motor with crouching Formula speed reducer is composed, and the driving device is mounted on trolley frame (31)；The driving device output shaft is connected to Small elevating arc (402), the small elevating arc are connect with big elevating arc (403) external toothing, and the big elevating arc is connected to above-mentioned hang On bar axis (42).

3. two underslung trolleys of a kind of band according to claim 1 and the adjustable crane of cantilever beam car bumper, feature exist In：The underslung trolley (3) includes trolley frame (31), driving mechanism (34), roller devices (35)；The trolley frame is by steel plate It is welded or is welded by steel plate and shaped steel combination；The trolley frame both sides connect the driving mechanism described in two sets respectively (34)；The driving mechanism is connected to by balance plate (32) and axis pin (33) on trolley frame；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 driving mechanism (34) including motor (341), two driving wheels (342), two followers (343), band gear on driving wheel single-wheel edge and wheel rim, Follower band single-wheel edge；Described two driving wheels are connected in 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) is included to be subtracted Fast machine, motor output shaft band gear；The motor (341) is connected in left hanging plate, motor output shaft simultaneously with above-mentioned two master Driving wheel external toothing connects.

4. two underslung trolleys of a kind of band according to claim 1 and the adjustable crane of cantilever beam car bumper, feature exist In：The car bumper device (70) includes left fixed seat (701), right fixed seat (702), buffer (703), the left fixed seat It is process with right fixed seat for casting or with steel plate, and both left fixed seat and right fixed seat symmetrically make；The right fixation Seat side opens up clip slot (7021)；Threaded hole (7022) is opened up above the clip slot；Bolt and stop nut are connected on threaded hole (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；It is described left solid Reservation and right fixed seat are connected to by screw rod (705) and nut on two sides Ji (211) of track.

5. two underslung trolleys of a kind of band according to claim 1 and the adjustable crane of cantilever beam car bumper, feature exist In：The cart actuating device (8) includes wheel (81), decelerating motor (83), and the wheel is two-wheel edge, the wheel Spline tooth (811) is internally provided with, the wheel (81) both sides pass through bearing (82) and flange shaft (84), hollow flange axis respectively (85) it connects, the ring flange of the flange shaft (84) and hollow flange axis (85) is connected to the both sides of end carriage (1)；It is described Bearing (82) outer ring is fixed on by baffle ring (86) on the wheel；It is set on the ring flange (851) of above-mentioned hollow flange axis (85) There is motor connecting screw hole (852)；Decelerating motor (83) the band splined output shaft (831) and above-mentioned wheel inner spline gear (811) Connection；Positioning concave ring (832) in flange seat on the decelerating motor is inlayed with ring flange (851) outer diameter in hollow flange axis Embedding connection is simultaneously fastened by screw.

6. two underslung trolleys of a kind of band according to claim 1 and the adjustable crane of cantilever beam car bumper, feature exist In：The safety ruler (583) is including swing rod (5832) and meets and discusses (5831), and meet and discuss (5831) are arranged to arc shape, The both ends met and discussed are set as symmetric bending shape；Described swing rod (5832) one end is equipped with splined hole (5833).