CN108263947A - A kind of band lifting truck and underslung trolley and the telescopic crane of cantilever beam - Google Patents

Abstract

This application discloses a kind of band lifting truck and underslung trolley and the telescopic crane of cantilever beam, the double girder bridge formed including girder, end carriage；I-beam track is equipped with below girder；Lifting truck is connected between two tracks；End carriage both ends are designed with cart actuating device and safety hook；A underslung trolley is also connected on the track；The underslung trolley is equipped with rotating mechanism；Sunpender axis lower end in the rotating mechanism is connect with cantilever member, upper end connection safety ruler；The the meeting and discussing to touch with travel switch of the safety ruler connect, and two travel switches are connected to above trolley frame；Cantilever beam in the cantilever member is scalable beam；The telescopic movable of the cantilever beam is controlled by hydraulic cylinder；One end connection hydraulic station of the cantilever beam, the other end fix suspension electric block；The cantilever beam is in operation outside extended workshop below the girder, and can rotate in the horizontal plane.

Description

A kind of band lifting truck and underslung trolley and the telescopic crane of cantilever beam

Technical field

This application involves crane fields more particularly to a kind of band lifting truck and underslung trolley and cantilever beam to stretch The crane of contracting.

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 band lifting truck and underslung trolley and the telescopic crane of cantilever beam, institute It states crane and is not only able in this workshop handling object up and down, additionally it is possible to lift by crane this workshop directly below across cart support rail beam Cargo across outer next door place, also can be in this workshop in cart running track direction direct lifting cargo in place outdoors, it is not necessary to It is transported by other transporting equipments, improves efficiency, and cargo can be unloaded the place for being placed on workshop needs, the crane can be low The workshop of roofing uses；The crane is not tumbled, and the cantilever beam rotating speed of the crane can accurately reach user demand, and energy It rotates in the horizontal plane；The crane also is able to facilitate handling elongate article.

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

A kind of band lifting truck and underslung trolley and the telescopic crane of cantilever beam, form including girder 2, end carriage 1 Double girder bridge 28；2 lower section of girder is equipped with i-beam track 21；Lifting truck is connected between two tracks 21 01, the lifting truck 01 is equipped with hook type lifting lifting device；It is characterized in that：1 both ends of end carriage are designed with wounded in the battle The cart actuating device 8 of key teeth wheel and safety hook 11；The track both ends connect car bumper device 70；Also connect on the track 21 Connect a underslung trolley 3；The underslung trolley 3 is equipped with rotating mechanism 4；42 lower end of sunpender axis in the rotating mechanism is with hanging Arm member 5 connects；Sunpender axis upper end connects safety ruler 583；The the meeting and discussing to touch with travel switch 581 of the safety ruler connect, Two travel switches are connected to above trolley frame 31；Cantilever beam 51 in the cantilever member 5 is scalable beam；It is described outstanding The telescopic movable of arm beam is controlled by hydraulic cylinder；One end connection hydraulic station 52 of the cantilever beam, the other end, which is fixed, hangs electronic calabash Reed 10；The cantilever beam 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：

The suspension hook on lifting truck (01) in the application can be usually used in this either inside cargo hoisting, because of lifting cargo Center of gravity do not generate tilting moment in the underface of crane, crane and trolley, the operating mode of high speed can be used to improve work Make efficiency, and available for lifting large-tonnage object；Lifting truck is acted on available for main lifting.

The cantilever beam of underslung trolley (3) can be stretched out between crane locomotive to outdoors or to next door workshop in the application crane Directly lift cargo；The next door workshop cargo of cart traffic direction endpoint can be not only lifted by crane, and cart operation can be lifted by crane The cargo in railway line side workshop；Since the cantilever beam of the application is set to below trolley and girder, cantilever beam can pass through support rail It stretches into the direct lifting cargo in next door workshop below beam or can directly stretch out the workshop operation outdoors of cart traffic direction, because logical The door top in normal workshop can reach height where the support rail beam in this workshop substantially, therefore present techniques feature can realize the application Purpose；After lifting cargo, by movement of the electric block along cantilever beam or the rotation by cantilever member or pass through suspension The movement of trolley or by the movement of crane operating mechanism or by aforementioned four integrated motion, can be lifting Cargo hangs onto the place of this workshop needs；It can not when carrying out cargo handing-over outdoors with the next door workshop of workshop surrounding or workshop The transhipment of other transporting equipments must be borrowed, improves efficiency.

Telescopic cantilever beam (51) one end connection electric block (10) handling weight in the application, other end connection hydraulic pressure It stands (52), hydraulic station provides power to the hydraulic cylinder inside cantilever beam；Hydraulic station is arranged on the rear end of cantilever beam, with electric block The two weight can balance a part, reduce some tilting moments；Telescopic arm is advantageous in that, when work puts in next door vehicle as far as possible Between, working range is big；After slinging cargo, cantilever beam shortens, and convenient for rotation, reduces the influence of surrounding enviroment.

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.

The suspension hook on lifting truck (01) in the application crane and electric block (10) suspension hook on underslung trolley (3) With the use of handling elongate article can be facilitated.

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.

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) that electric block and hydraulic station are powered is prevented to be wrapped in cantilever member In Holder for hanging household utensiles on and be torn because cable (6) 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 band lifting truck and underslung trolley and the telescopic crane of cantilever beam, packet Include girder 2, the double girder bridge 28 that end carriage 1 forms；2 lower section of girder is equipped with i-beam track 21；Two tracks 21 it Between be connected to lifting truck 01, the lifting truck 01 is equipped with hook type lifting lifting device；It is characterized in that：The end carriage 1 both ends are designed with cart actuating device 8 and safety hook 11 with spline tooth wheel；The track both ends connect car bumper device 70； A underslung trolley 3 is also connected on the track 21；The underslung trolley 3 is equipped with rotating mechanism 4；In the rotating mechanism 42 lower end of sunpender axis is connect with cantilever member 5；Sunpender axis upper end connects safety ruler 583；Meeting and discussing for the safety ruler is opened with stroke Connection can be touched by closing 581, and two travel switches are connected to above trolley frame 31；Cantilever beam 51 in the cantilever member 5 It is scalable beam；The telescopic movable of the cantilever beam is controlled by hydraulic cylinder；One end connection hydraulic station 52 of the cantilever beam, it is another The fixed suspension electric block 10 in end；The cantilever beam is in operation outside extended workshop below the girder, and can be in horizontal plane Upper rotation.

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 band lifting truck and underslung trolley and the telescopic crane of cantilever beam, including girder (2), end carriage (1) group Into double girder bridge (28)；I-beam track (21) is equipped with below the girder (2)；It is connected between two tracks (21) Lifting truck (01), the lifting truck (01) are equipped with hook type lifting lifting device；It is characterized in that：The end carriage (1) Both ends are designed with cart actuating device (8) and safety hook (11) with spline tooth wheel；The track both ends connect car bumper device (70)；A underslung trolley (3) is also connected on the track (21)；The underslung trolley (3) is equipped with rotating mechanism (4)；Institute Sunpender axis (42) lower end stated in rotating mechanism is connect with cantilever member (5)；Sunpender axis upper end connection safety ruler (583)；It is described The the meeting and discussing to touch with travel switch (581) of safety ruler connect, and two travel switches are connected to trolley frame (31) above；Institute The cantilever beam (51) stated in cantilever member (5) is scalable beam；The telescopic movable of the cantilever beam is controlled by hydraulic cylinder；It is described outstanding One end connection hydraulic station (52) of arm beam, the other end fix suspension electric block (10)；The cantilever beam is under the girder Operation outside workshop can be stretched out, and can be rotated in the horizontal plane.

2. a kind of band lifting truck according to claim 1 and underslung trolley and the telescopic crane of cantilever beam, It is characterized in that：The rotating mechanism (4) includes 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 connected to the bearing block (41) inside by thrust bearing (45), and 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. a kind of band lifting truck according to claim 1 and underslung trolley and the telescopic crane of cantilever beam, It is characterized in that：The underslung trolley (3) includes trolley frame (31), driving mechanism (34), roller devices (35)；The trolley frame It is welded by steel plate or is welded by steel plate and shaped steel combination；The trolley frame both sides connect the driving described in two sets respectively Mechanism (34)；The driving mechanism is connected to by balance plate (32) and axis pin (33) on trolley frame；It is driven on trolley frame in every set The side of motivation structure reconnects a roller devices (35)；The roller devices are in immediately below track (21)；The driving machine Structure (34) includes motor (341), two driving wheels (342), two followers (343), band tooth on driving wheel single-wheel edge and wheel rim Wheel, follower band single-wheel edge；Described two driving wheels are connected in left hanging plate (344), and described two followers are connected to right extension On plate (345)；The left hanging plate is connected with right hanging plate by two studs and nut (346)；Above-mentioned motor (341) is included Speed reducer, motor output shaft band gear；The motor (341) is connected in left hanging plate, motor output shaft while and above-mentioned two Driving wheel external toothing connects.

4. a kind of band lifting truck according to claim 1 and underslung trolley and the telescopic crane of cantilever beam, It is characterized in that：The car bumper device (70) includes left fixed seat (701), right fixed seat (702), buffer (703), the left side 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；It is described Right fixed seat side opens up clip slot (7021)；Threaded hole (7022) is opened up above the clip slot；Bolt is connected on threaded hole and is prevented Loose nut (704)；Side opens up connecting hole (7023) below the clip slot；The right fixed seat is opened on the side beside clip slot If buffer mounting hole (7024)；Two buffers (703) are connected in above-mentioned left fixed seat and right fixed seat；Institute Left fixed seat and right fixed seat is stated to be connected on two sides Ji (211) of track by screw rod (705) and nut.

5. a kind of band lifting truck according to claim 1 and underslung trolley and the telescopic crane of cantilever beam, It is characterized in that：The cart actuating device (8) includes wheel (81), decelerating motor (83), and the wheel is two-wheel edge, described Inside wheel be equipped with spline tooth (811), the wheel (81) both sides are respectively by bearing (82) and flange shaft (84), hollow Flange shaft (85) connects, and the ring flange of the flange shaft (84) and hollow flange axis (85) is connected to the two of end carriage (1) Side；Bearing (82) outer ring is fixed on by baffle ring (86) on the wheel；The ring flange of above-mentioned hollow flange axis (85) (851) it is equipped with motor connecting screw hole (852)；Decelerating motor (83) the band splined output shaft (831) and flower in above-mentioned wheel Key teeth (811) connects；Positioning concave ring (832) in flange seat on the decelerating motor and the ring flange in hollow flange axis (851) outer diameter is inlayed connection and is fastened by screw.

6. a kind of band lifting truck according to claim 1 and underslung trolley and the telescopic crane of cantilever beam, It is characterized in that：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).