CN114671355A

CN114671355A - Cantilever type container straddle carrier

Info

Publication number: CN114671355A
Application number: CN202210307736.8A
Authority: CN
Inventors: 虞国锋
Original assignee: Tantalum Platinum Technology Shanghai Co ltd
Current assignee: Tantalum Platinum Technology Shanghai Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-06-28

Abstract

The invention provides a cantilever type container straddle carrier, which comprises a vehicle body frame, a lifting mechanism arranged on the vehicle body frame, a cargo carrying platform connected with the lifting mechanism, a telescopic fork arranged on the cargo carrying platform and a lifting appliance arranged on the telescopic fork, wherein the telescopic fork comprises a fixed fork arranged on the cargo carrying platform and a movable fork movably connected with the fixed fork, the movable fork can move relative to the fixed fork, the lifting appliance is arranged on the movable fork, and the lifting mechanism can drive the cargo carrying platform to lift. The telescopic fork extends from the side surface of the cargo carrying platform to the container, is locked with the container through the lifting appliance and lifts the container, then the telescopic fork drives the container to retract, and the cargo carrying platform is driven to descend through the lifting mechanism on the vehicle body frame to drop the container to the ground, so that the whole container is carried; the carrying mode occupies a small space at the top of the train, can effectively avoid collision with a pantograph or a power grid above the train, and is convenient for loading and unloading the container.

Description

Cantilever type container straddle carrier

Technical Field

The invention relates to the technical field of container handling, in particular to a cantilever type container straddle carrier.

Background

Railway container handling refers to the need for container straddle carriers to yard and yard containers after a train has delivered the containers to a destination. With the development of railway electrification and the arrival of the high-speed rail era, gas locomotives gradually develop towards electric locomotives, and the original railway container loading and unloading mode meets difficulties and bottlenecks, so that new loading and unloading modes and equipment need to be developed.

Freight container trains towed by fuel locomotives are generally loaded and unloaded from the top of a container by a railway track crane or a reach stacker, and the loading and unloading operation mode requires a large operation space on the top of the train. However, the overhead of the electric locomotive is required to be erected to contact with a power grid, a pantograph is arranged on the top of the electric locomotive, the operation space on the top is severely limited, and the containers are hardly directly loaded and unloaded by a railway track crane or a front-end crane. Therefore, it is urgently needed to develop a new container truck which can meet the requirements of railway electrification.

Disclosure of Invention

In view of the above-mentioned disadvantages of the prior art, the present invention is directed to provide a cantilever type container straddle carrier, which occupies a small space on the top of a train during operation, and facilitates loading and unloading of containers.

In order to achieve the purpose, the invention provides a cantilever type container straddle carrier which comprises a carrier body frame, a lifting mechanism arranged on the carrier body frame, a cargo carrying platform connected with the lifting mechanism, a telescopic fork arranged on the cargo carrying platform and a lifting appliance arranged on the telescopic fork, wherein the telescopic fork comprises a fixed fork arranged on the cargo carrying platform and a movable fork movably connected with the fixed fork, the movable fork can move relative to the fixed fork, the lifting appliance is arranged on the movable fork, and the lifting mechanism can drive the cargo carrying platform to lift.

Further, flexible fork and the platform sliding fit that carries cargo, flexible fork has two, it installs the drive reel on the platform to carry cargo, the outside winding of drive reel has the interval to adjust the rope, the interval is adjusted the rope and is walked around the interval on carrying cargo and adjust the leading wheel, be connected with flexible fork.

Furthermore, the two telescopic forks are respectively a first telescopic fork and a second telescopic fork, the two distance adjusting ropes are respectively a first distance adjusting rope and a second distance adjusting rope, the two distance adjusting guide wheels are respectively positioned at two sides of the driving drum, and the two distance adjusting guide wheels are respectively a first distance adjusting guide wheel and a second distance adjusting guide wheel, one end of the first distance adjusting rope bypasses the first distance adjusting guide wheel from top to bottom and is connected with the first telescopic fork, the other end of the first distance adjusting rope bypasses the driving reel and is connected with the first telescopic fork, one end of the second distance adjusting rope rounds the second distance adjusting guide wheel from bottom to top and is connected with the second telescopic fork, the other end of the second distance adjusting rope bypasses the driving winding drum and is connected with a second telescopic fork.

Furthermore, an interval adjusting pulley is installed on the fixed fork, an interval adjusting guide rail is arranged on the cargo carrying platform, and the interval adjusting pulley is matched with the interval adjusting guide rail.

Further, the movable fork comprises an intermediate fork movably connected with the fixed fork and a front fork movably connected with the intermediate fork, the intermediate fork can move relative to the fixed fork, and the front fork can move relative to the intermediate fork.

Furthermore, the middle fork is in sliding fit with the fixed fork, the front fork is in sliding fit with the middle fork, a telescopic driving motor is mounted on the fixed fork, and the telescopic driving motor is connected with the transmission mechanism and can drive the middle fork to move relative to the fixed fork through the transmission mechanism; and the two ends of the middle fork are respectively provided with a first middle wheel and a second middle wheel, one end of the fixed fork is connected with one end of the first transmission strip, the other end of the first transmission strip is connected with one end of the front fork after bypassing the first middle wheel, the other end of the fixed fork is connected with one end of the second transmission strip, and the other end of the second transmission strip is connected with the other end of the front fork after bypassing the second middle wheel.

Furthermore, the transmission mechanism comprises a transmission gear arranged on the fixed fork and a transmission rack arranged on the middle fork, the transmission rack is meshed with the transmission gear, the first middle wheel and the second middle wheel are chain wheels, and the first transmission strip and the second transmission strip are chains.

Further, hoist mechanism is including installing lifting reel, hoisting wire rope and the assembly pulley on the automobile body frame, the assembly pulley is including installing the fixed pulley on the automobile body frame and installing the movable pulley on the cargo bed, hoisting wire rope's one end winding is on lifting reel, the other end is walked around in proper order behind fixed pulley and the movable pulley with the automobile body frame be connected.

Furthermore, the goods carrying platform is provided with a lifting guide wheel, and the lifting guide wheel is matched with a lifting guide rail arranged on the vehicle body frame.

Furthermore, the cantilever type container straddle carrier further comprises a ground rail fixed on the ground, a walking module is arranged at the bottom of the vehicle body frame and matched with the ground rail, and the walking module can drive the vehicle body frame to move along the ground rail.

As mentioned above, the cantilever type container straddle carrier has the following beneficial effects:

when a container on a train is transported, the telescopic fork extends to the container from the side surface of the cargo carrying platform, is locked with the container through the lifting appliance and lifts the container, then the telescopic fork drives the container to retract, the cargo carrying platform is driven to descend through the lifting mechanism on the vehicle body frame, the container is descended to the ground, the locking of the lifting appliance and the container is released, and the transportation of the whole container is completed; the carrying mode occupies a small space at the top of the train, can effectively avoid collision with a pantograph or a power grid above the train, and is convenient for loading and unloading the container.

Drawings

Fig. 1 is a schematic view of the structure of a cantilevered container straddle carrier in an embodiment of the present invention.

Fig. 2 is a perspective view of the cantilevered container straddle carrier in an embodiment of the present invention.

Fig. 3 is a front view of the cantilevered container straddle carrier in an embodiment of the present invention.

Fig. 4 is a top view of the cantilevered container straddle carrier of the present invention.

Fig. 5 is a left side view of the cantilevered container straddle carrier in an embodiment of the present invention.

FIG. 6 is a perspective view of a cargo bed in an embodiment of the present invention.

FIG. 7 is a top view of a cargo bed in an embodiment of the present invention.

FIG. 8 is a front view of a cargo bed in an embodiment of the present invention.

FIG. 9 is a schematic view of a connection structure between the lifting mechanism, the driving drum and the retractable fork according to an embodiment of the present invention.

FIG. 10 is a front view of the connection between the lift mechanism, drive drum and telescopic fork in an embodiment of the present invention.

FIG. 11 is a top view of the linkage between the lift mechanism, the drive drum, and the telescopic fork in an embodiment of the present invention.

FIG. 12 is a left side view of the linkage between the lift mechanism, drive drum and telescopic fork in an embodiment of the present invention.

FIG. 13 is a bottom view of a retractable fork in an embodiment of the present invention.

FIG. 14 is a front view of a retractable fork in an embodiment of the present invention.

Fig. 15 is a schematic structural view of a telescopic fork in an embodiment of the invention.

FIG. 16 is a rear view of a retractable fork in an embodiment of the present invention.

Fig. 17 is a perspective view of a vehicle body frame in an embodiment of the present invention.

Fig. 18 is a front view of the vehicle body frame in the embodiment of the present invention.

FIG. 19 is a top view of a body frame in an embodiment of the present invention.

FIG. 20 is a left side view of the body frame in an embodiment of the present invention.

Fig. 21 is a perspective view of an upper cross member frame in an embodiment of the present invention.

Fig. 22 is a top view of an upper cross member frame in an embodiment of the present invention.

Fig. 23 is a sectional view taken along line a-a in fig. 22.

Fig. 24 is a first perspective view of a post holder according to an embodiment of the present invention.

Fig. 25 is a second perspective view of a post holder according to an embodiment of the present invention.

FIG. 26 is a rear view of a post holder in an embodiment of the present invention.

Fig. 27 is a left side view of a post holder in an embodiment of the present invention.

FIG. 28 is a top view of a post holder according to an embodiment of the present invention.

Fig. 29 is a schematic structural view of a lower beam and a walking module in the embodiment of the present invention.

Fig. 30 is a top view of a connection structure of a lower beam and a walking module in the embodiment of the present invention.

Fig. 31 is a front view of a connection structure of a lower cross member and a walking module in the embodiment of the present invention.

Fig. 32 is a perspective view of a ground rail in an embodiment of the present invention.

FIG. 33 is a top view of a ground rail in an embodiment of the present invention.

Figure 34 is a front view of a ground rail in an embodiment of the present invention.

Fig. 35 is a schematic structural diagram of a spreader in an embodiment of the invention.

Description of the element reference numerals

1 vehicle body frame 411 drive gear

11 upper beam frame 42 middle fork

111 upper beam 421 first intermediate wheel

12 column 422 second intermediate wheel

121 column 423 transmission rack

122 column stay rib 43 front fork

123 overload prevention device 44 interval adjusting pulley

13 lower beam 45 telescopic driving motor

2 first driving strip of lifting mechanism 461

21 lifting the reel 462 second driving strip

22 hoisting steel wire rope 5 sling

23 pulley block 51 oil hydraulic cylinder

231 fixed pulley 52 crank

232 movable pulley 53 limit retainer ring

3 load table 54 cam

31 drive spool 55 latching

32-space adjusting rope 56 unlocking

32a first distance adjusting rope 57 guide sleeve

32b second space adjusting cord 58 twist lock hook

33 spacing adjustment guide wheel 59 is pinned to box

33a first distance adjusting guide wheel 6 ground rail

33b second pitch adjustment guide wheel 61 ground rail track

34 spacing adjustment guide rail 62 fixed steel plate

35 lifting guide wheel 63 buffer

36 microscope carrier frame 64 rail pressing device

37 first support pulley 7 walking module

38 second support pulley 8 container

4 telescopic fork 81 large container

4a first telescopic fork 82 small container

4b second telescopic fork 9 train

41 fixed fork 91 pantograph

92 electric network

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention unless otherwise specified.

As shown in fig. 1 to 35, the present embodiment provides a cantilever type container straddle carrier, which comprises a vehicle body frame 1, a lifting mechanism 2 installed on the vehicle body frame 1, a cargo carrying platform 3 connected with the lifting mechanism 2, a telescopic fork 4 installed on the cargo carrying platform 3, and a lifting appliance 5 installed on the telescopic fork 4, wherein the telescopic fork 4 comprises a fixed fork 41 installed on the cargo carrying platform 3 and a movable fork movably connected with the fixed fork 41, the movable fork can move relative to the fixed fork 41, so that the telescopic fork 4 can be integrally extended and shortened, the lifting appliance 5 is installed on the movable fork, and the lifting mechanism 2 can drive the cargo carrying platform 3 to lift. When a container 8 on a train 9 is transported, the telescopic fork 4 extends from the side surface of the cargo carrying platform 3 to the container 8, is locked with the container 8 through the lifting appliance 5 and lifts the container 8, then the telescopic fork 4 drives the container 8 to retract, then the cargo carrying platform 3 is driven to descend through the lifting mechanism 2 on the train body frame 1, the container 8 is descended to the ground, the locking of the lifting appliance 5 and the container 8 is released, and the transportation of the whole container 8 is completed; the carrying mode occupies a small space at the top of the train 9, can effectively avoid collision with a pantograph 91 or a power grid 92 and the like above the train 9, and is convenient for loading and unloading containers.

As shown in fig. 6 to 11, in the present embodiment, the telescopic fork 4 is slidably fitted to the cargo carrying platform 3, there are two telescopic forks 4, the cargo carrying platform 3 is provided with a driving drum 31, the driving drum 31 is externally wound with a distance adjusting rope 32, and the distance adjusting rope 32 bypasses a distance adjusting guide wheel 33 on the cargo carrying platform 3 and is connected to the telescopic fork 4. When the drive drum 31 rotates, the distance adjusting rope 32 drives the telescopic forks 4 to move, so that the distance between the two telescopic forks 4 is increased or reduced, the adjustment of the distance between the two telescopic forks 4 is realized, the lifting tools 5 on the two telescopic forks 4 can be ensured to have good locking matching relation with containers 8 with different specifications and sizes, and the requirements for lifting containers 8 with different sizes are further met, such as 20-foot containers or 40-foot containers. Specifically, the two telescopic forks 4 are a first telescopic fork 4a and a second telescopic fork 4b, the distance adjusting rope 32 has two distance adjusting ropes 32a and a second distance adjusting rope 32b, the distance adjusting guide wheels 33 have two distance adjusting guide wheels 33 respectively located at two sides of the driving drum 31, the two distance adjusting guide wheels 33 are a first distance adjusting guide wheel 33a and a second distance adjusting guide wheel 33b, one end of the first distance adjusting rope 32a bypasses the first distance adjusting guide wheel 33a from top to bottom and is connected with the first telescopic fork 4a, the other end of the first distance adjusting rope 32a bypasses the driving drum 31 and is connected with the first telescopic fork 4a, one end of the second distance adjusting rope 32b bypasses the second distance adjusting guide wheel 33b from bottom to top and is connected with the second telescopic fork 4b, the other end of the second distance adjusting rope 32b passes around the driving drum 31 and is connected to the second telescopic fork 4 b. By adopting the above structural design, particularly the winding form of the rope, when the driving drum 31 rotates in the forward direction, the first telescopic fork 4a is driven to move towards the middle by the first distance adjusting rope 32a, and the second telescopic fork 4b is driven to move towards the middle by the second distance adjusting rope 32b, so that the adjustment that the distance between the first telescopic fork 4a and the second telescopic fork 4b becomes smaller is realized; and when the driving reel 31 counter-rotating, will drive first flexible fork 4a to a tip of carrying cargo bed 3 through first interval adjusting rope 32a and remove to drive second flexible fork 4b through second interval adjusting rope 32b and remove to another tip of carrying cargo bed 3, thereby realize the regulation of the first flexible fork 4a and the flexible fork 4b interval grow of second. In this embodiment, the first distance adjusting rope 32a and the second distance adjusting rope 32b are both specifically steel wire ropes. The two distance adjusting guide wheels 33 are wheels which are arranged on the cargo carrying platform 3 and can rotate freely. The first telescopic fork 4a and the second telescopic fork 4b are positioned at the same height; two first supporting pulleys 37 are further mounted on the stage frame 36, the two first supporting pulleys 37 are respectively located right below the first distance adjusting guide wheel 33a and the driving reel 31, and both the two first supporting pulleys 37 are in contact with the first distance adjusting rope 32a to support the first distance adjusting rope 32a, so that the first distance adjusting rope 32a is surrounded in a rectangular shape; two second supporting pulleys 38 are further mounted on the stage frame 36, wherein one second supporting pulley 38 is located right below the driving drum 31, and the second distance adjusting guide wheel 33b and the second supporting pulley 38 are located at the same height; the other second support pulley 38 is located below the side of the drive drum 31, and both second support pulleys 38 are in contact with the second pitch adjustment rope 32 b. In addition, the fixed forks 41 of the two telescopic forks 4 are respectively provided with an interval adjusting pulley 44, the loading platform 3 is provided with an interval adjusting guide rail 34, the interval adjusting pulleys 44 are matched with the interval adjusting guide rails 34, and when the interval adjusting ropes 32 drive the telescopic forks 4 to move, the telescopic forks 4 are guided to smoothly slide along the interval adjusting guide rails 34 by utilizing the matching effect of the interval adjusting pulleys 44 and the interval adjusting guide rails 34. The spacing adjustment cord 32 is also connected to the fixed fork 41. In the embodiment, the telescopic fork 4 moves along the left and right directions to realize the adjustment of the distance, and the straddle carrier can meet the carrying requirements of a large container 81 and a small container 82.

As shown in fig. 13 to 15, specifically, the movable fork in the present embodiment includes an intermediate fork 42 movably connected to the fixed fork 41, and a front fork 43 movably connected to the intermediate fork 42, and the intermediate fork 42 is movable relative to the fixed fork 41, and the front fork 43 is movable relative to the intermediate fork 42. The middle fork 42 is in sliding fit with the fixed fork 41, the front fork 43 is in sliding fit with the middle fork 42, the fixed fork 41 is provided with a telescopic driving motor 45, and the telescopic driving motor 45 is connected with a transmission mechanism and can drive the middle fork 42 to move relative to the fixed fork 41 through the transmission mechanism; and both ends of middle fork 42 are equipped with first middle wheel 421 and second middle wheel 422 respectively, and the one end of fixed fork 41 is connected with the one end of first transmission line 461, and the other end of first transmission line 461 is connected with the one end of front fork 43 after bypassing first middle wheel 421, and the other end of fixed fork 41 is connected with the one end of second transmission line 462, and the other end of second transmission line 462 is connected with the other end of front fork 43 after bypassing second middle wheel 422. The transmission mechanism comprises a transmission gear 411 arranged on the fixed fork 41 and a transmission rack 423 arranged on the intermediate fork 42, the transmission rack 423 is meshed with the transmission gear 411, the first intermediate wheel 421 and the second intermediate wheel 422 are both chain wheels, and the first transmission rack 461 and the second transmission rack 462 are both chains. The telescopic driving motor 45 drives the middle fork 42 to move along the extending direction relative to the fixed fork 41 through a transmission mechanism, the first middle wheel 421 moves along with the middle fork 42 and pushes the first transmission strip 461, and the other end of the first transmission strip 461 drives the front fork 43 to move along the extending direction relative to the middle fork 42, so that the whole telescopic fork 4 can be extended quickly; the telescopic driving motor 45 rotates in the reverse direction, the middle fork 42 is driven by the transmission mechanism to move in the retracting direction relative to the fixed fork 41, the second middle wheel 422 moves together with the middle fork 42 and pushes the second transmission bar 462, and the other end of the second transmission bar 462 drives the front fork 43 to move in the retracting direction relative to the middle fork 42, so that the whole telescopic fork 4 is shortened rapidly. In this embodiment, the intermediate fork 42 and the fixed fork 41 are in a matching relationship between a slider and a guide rail, and the intermediate fork 42 and the front fork 43 are also in a matching form between a slider and a guide rail, so as to realize sliding matching. In this way, the middle fork 42 and the front fork 43 are driven to extend or retract at the side of the cargo bed 3 by the driving of the telescopic driving motor 45, so that the horizontal transportation of the container 8 in the lateral direction of the train 9 is realized. In this embodiment, the retractable fork 4 can be retracted from the side of the cargo bed 3 in the horizontal direction, specifically, in the front-rear direction.

As shown in fig. 1, 9, 10 and 17, in this embodiment, the lifting mechanism 2 includes a lifting drum 21 mounted on the body frame 1, a lifting wire rope 22 and a pulley block 23, the pulley block 23 includes a fixed pulley 231 mounted on the body frame 1 and a movable pulley 232 mounted on the cargo bed 3, one end of the lifting wire rope 22 is wound on the lifting drum 21, and the other end of the lifting wire rope is connected to the body frame 1 after sequentially passing around the fixed pulley 231 and the movable pulley 232. Like this, hoist and mount drum 21 is rotatory, will drive through hoist rope 22 and movable pulley 232 and carry cargo bed 3 and the lift of container 8, and simultaneously, assembly pulley 23 has the guide effect to hoist rope 22, guarantees that hoist rope 22 can smoothly move. In addition, in this embodiment, the cargo bed 3 is provided with a lifting guide wheel 35, and the lifting guide wheel 35 is matched with a lifting guide rail mounted on the vehicle body frame 1. When the lifting mechanism 2 drives the cargo carrying platform 3 to lift, the cargo carrying platform 3 can be guided to lift stably by utilizing the matching relation between the lifting guide wheels 35 and the lifting guide rails, so that the lifting of the container 8 is safer and more reliable.

As shown in fig. 1 and fig. 29 to fig. 34, the cantilever type container straddle carrier of the present embodiment further includes a ground rail 6 fixed on the ground, the bottom of the vehicle body frame 1 is provided with a walking module 7, the walking module 7 is matched with the ground rail 6, and the walking module 7 can drive the vehicle body frame 1 to move along the ground rail 6, and simultaneously can drive the container 8 to move along the ground rail 6, so that the operation is more stable and reliable, and the horizontal transportation of the container 8 is realized.

As shown in fig. 35, the spreader 5 of the present embodiment includes an oil hydraulic cylinder 51, a crank 52, a limit stop 53, a cam 54, a lock 55, an unlock 56, a guide bush 57, a twist lock hook 58, and a box pin 59. In the embodiment, 4 lifting appliances 5 are arranged below two telescopic forks 4, when a container 8 is lifted, 4 twist lock hooks 58 are opposite to 4 elliptical holes of the container 8 to descend, after the container 8 descends to a certain position, an oil hydraulic cylinder 51 pushes a crank 52 and drives a cam 54 to rotate 90 degrees, so that the twist lock hooks 58 rotate 90 degrees, the twist lock hooks 58 hook lock holes to connect and lock the container 8, then a lock 55 and the container 8 are combined into a whole, and a straddle carrier starts to lift; the unloading sequence is reversed and the hydraulic cylinder 51 is retracted to rotate the twist-lock catch 58 through an additional 90 degrees and then the lock 56 is disengaged from the container 8.

As shown in fig. 17 to 29, the body frame 1 in the present embodiment includes an upper cross member frame 11, a pillar brace 12, and a lower cross member 13. The upper beam frame 11 is installed on the upright post frames 12, the two upright post frames 12 are both installed on the two lower beams 13, and the two lower beams 13 are respectively installed on the two ground rails 6. The hoisting drum 21 is a winch drum and is mounted on the upper beam frame 11, and the upper beam frame 11 includes two upper beams 111. Two sets of lifting mechanisms 2 are respectively arranged at two ends of the upper cross beam frame 11. Two groups of pulley blocks 23 are respectively arranged on two sides of the upper cross beam frame 11 along the steel wire ropes of the lifting mechanism 2 to provide line directions for the steel wire ropes. The cargo bed 3 lifts or lowers the container 8 between the upper cross member 111 and the lower cross member 13 by the lifting mechanism 2 on the upper cross member 111. The cargo bed 3 can lift and lower the container 8 conveyed from the right below, in addition to lifting and lowering the container 8 laterally by the telescopic forks 4. The lower beam 13 is driven by the walking module 7 to drive the lower beam 13 to move on the ground rail 6, so that the whole cantilever type container straddle carrier is driven to move together. The column frame 12 in this embodiment includes a heavy column 121, a column stay 122, and an overload protection device 123 installed on the top end of the heavy column 121. The upright post frame 12 is integrally arranged in a rectangular shape, and the upright post diagonal ribs 122 enable the upright post frame 12 to be more stable and have higher strength. The overload prevention apparatus 123 functions to stop the operation of the lifting mechanism 2 when the lifting mechanism 2 lifts the container 8 having a weight exceeding a predetermined weight, so as to protect the motor of the lifting mechanism 2 from being damaged. The ground rail 6 in this embodiment specifically includes a ground rail 61 and a fixed steel plate 62, the fixed steel plate 62 is used for fixing the ground rail 61, and the container straddle carrier travels along the ground rail 6 according to the control system until the container 8 is straddle-transported to the destination. In the embodiment, the ground rail 6 extends along the longitudinal direction, and the telescopic fork 4 extends along the transverse direction, so that the straddle carrier can execute longitudinal and transverse compound motion, and the straddle carrier for the container 8 is more flexible and diversified, and has strong lifting capacity. The container can walk right under the straddle carrier, and the container 8 is transported to a destination through the lifting appliance 5, the telescopic fork 4, the cargo carrying platform 3 and the lifting mechanism 2. In addition, in the present embodiment, the ground rail 6 further includes a buffer 63 mounted on an end portion of the ground rail 61 and a rail pressing device 64 mounted on the ground rail 61.

In the embodiment, the telescopic forks 4 are specifically installed below two ends of the cargo carrying platform 3 and can extend to the containers 8 from the side surfaces of the cargo carrying platform 3, and the lifting appliances 5 installed below the telescopic forks 4 are fixed and locked with the containers 8 through lifting appliance twist locks. The cargo carrying platform 3 comprises a platform frame 36, the lifting guide wheels 35 are installed on the side face of the platform frame 36, and the cargo carrying platform 3 is driven by the steel wire rope of the lifting mechanism 2 to move up and down, so that the lifting and landing of the container 8 are realized. The container straddle carrier in the embodiment can move through the container when loading and unloading the container 8, and the containers are directly placed on the ground, so that the devices do not need to wait, and the transportation is more flexible and efficient.

In the cantilever type container straddle carrier, the container is moved laterally by the telescopic fork 4 for carrying and stacking, so that the container straddle carrier is more flexible and effective in carrying the container, and avoids collision with a pantograph 91 and a power grid 92 of an electrified railway train; meanwhile, the distance between the lifting appliances 5 can be automatically adjusted according to the size of the container 8, the containers 8 with different sizes can be lifted and carried, and the application range is wider. Hoisting and carrying the container by using a winch steel wire rope pulley; the railway transportation vehicle has the advantages of low vehicle body posture, track walking, stable and reliable walking flexibility and strong carrying capacity, and provides a solution with simple structure and flexible use and strong carrying capacity for railway transportation at ports and docks.

In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The cantilever type container straddle carrier is characterized by comprising a vehicle body frame (1), a lifting mechanism (2) installed on the vehicle body frame (1), a cargo carrying platform (3) connected with the lifting mechanism (2), a telescopic fork (4) installed on the cargo carrying platform (3) and a lifting appliance (5) installed on the telescopic fork (4), wherein the telescopic fork (4) comprises a fixed fork (41) installed on the cargo carrying platform (3) and a movable fork movably connected with the fixed fork (41), the movable fork can move relative to the fixed fork (41), the lifting appliance (5) is installed on the movable fork, and the lifting mechanism (2) can drive the cargo carrying platform (3) to lift.

2. The cantilevered container straddle carrier according to claim 1, wherein the telescopic forks (4) are slidably engaged with the cargo bed (3), two telescopic forks (4) are provided, a driving drum (31) is mounted on the cargo bed (3), a spacing adjustment rope (32) is wound around the driving drum (31), and the spacing adjustment rope (32) is connected with the telescopic forks (4) by bypassing a spacing adjustment guide wheel (33) on the cargo bed (3).

3. The cantilevered container straddle carrier according to claim 2, wherein the two retractable forks (4) are a first retractable fork (4a) and a second retractable fork (4b), respectively, the distance adjusting rope (32) has two first distance adjusting ropes (32a) and two second distance adjusting ropes (32b), respectively, the distance adjusting guide wheels (33) have two first distance adjusting guide wheels (33a) and two second distance adjusting guide wheels (33b), respectively, located on both sides of the driving drum (31), and the two distance adjusting guide wheels (33) are a first distance adjusting guide wheel (33a) and a second distance adjusting guide wheel (33b), respectively, one end of the first distance adjusting rope (32a) is passed around the first distance adjusting guide wheel (33a) from above to below and connected to the first retractable fork (4a), and the other end of the first distance adjusting rope (32a) is passed around the driving drum (31), And is connected with first flexible fork (4a), the one end of second interval adjustment rope (32b) is walked around second interval adjustment leading wheel (33b) from bottom to top and is connected with second flexible fork (4b), the other end of second interval adjustment rope (32b) is walked around drive reel (31) and is connected with second flexible fork (4 b).

4. A cantilevered container straddle carrier according to any one of claims 1 to 3, wherein a spacing adjustment pulley (44) is mounted on the fixed fork (41), a spacing adjustment guide rail (34) is provided on the cargo bed (3), and the spacing adjustment pulley (44) is engaged with the spacing adjustment guide rail (34).

5. The cantilevered container straddle carrier according to claim 1, wherein the movable fork comprises an intermediate fork (42) movably connected to the fixed fork (41), and a front fork (43) movably connected to the intermediate fork (42), the intermediate fork (42) being movable relative to the fixed fork (41), the front fork (43) being movable relative to the intermediate fork (42).

6. The cantilevered container straddle carrier according to claim 5, wherein the intermediate fork (42) is slidably engaged with the fixed fork (41), the front fork (43) is slidably engaged with the intermediate fork (42), and the fixed fork (41) is provided with a telescopic driving motor (45), and the telescopic driving motor (45) is connected with a transmission mechanism and can drive the intermediate fork (42) to move relative to the fixed fork (41) through the transmission mechanism; and the both ends of middle fork (42) are equipped with first middle wheel (421) and second middle wheel (422) respectively, the one end of fixed fork (41) is connected with the one end of first transmission strip (461), the other end of first transmission strip (461) is connected with the one end of front fork (43) after bypassing first middle wheel (421), the other end of fixed fork (41) is connected with the one end of second transmission strip (462), the other end of second transmission strip (462) is connected with the other end of front fork (43) after bypassing second middle wheel (422).

7. The cantilevered container straddle carrier according to claim 6, wherein the driving mechanism comprises a driving gear (411) provided on the fixed fork (41) and a driving rack (423) provided on the intermediate fork (42), the driving rack (423) is engaged with the driving gear (411), the first intermediate wheel (421) and the second intermediate wheel (422) are both sprockets, and the first driving strap (461) and the second driving strap (462) are both chains.

8. The cantilever type container straddle carrier according to claim 1, wherein the lifting mechanism (2) comprises a lifting drum (21) mounted on the body frame (1), a lifting wire rope (22), and a pulley block (23), the pulley block (23) comprises a fixed pulley (231) mounted on the body frame (1) and a movable pulley (232) mounted on the cargo bed (3), one end of the lifting wire rope (22) is wound on the lifting drum (21), and the other end of the lifting wire rope is connected with the body frame (1) after sequentially passing around the fixed pulley (231) and the movable pulley (232).

9. The cantilevered container straddle carrier according to claim 8, wherein the cargo bed (3) is provided with a lifting guide wheel (35), and the lifting guide wheel (35) is engaged with a lifting guide rail mounted on the body frame (1).

10. The cantilever type container straddle carrier according to claim 1, further comprising a ground rail (6) fixed on the ground, wherein the bottom of the vehicle body frame (1) is provided with a walking module (7), the walking module (7) is matched with the ground rail (6), and the walking module (7) can drive the vehicle body frame (1) to move along the ground rail (6).