CN213651747U - Stacking machine - Google Patents

Abstract

The utility model discloses a stacker, which comprises a frame, wherein the frame comprises an upright post; the cargo carrying platform is provided with a frame, and the frame can move along the height direction of the upright post; the supporting component is telescopically fixed on the frame and has an extending position and a contracting position, and when the supporting component is in an extending state, the supporting component provides supporting force for the cargo carrying platform; the first driving assembly is fixed on the frame and used for driving the supporting assembly to switch between the stretching state and the contraction state. The utility model provides a stacker has supporting component, and this supporting component can simply provide reliable holding power for carrying cargo bed fast.

Description

Stacking machine

Technical Field

The utility model relates to a stacker technical field, it is specific, relate to a stacker.

Background

The automatic stereoscopic warehouse can effectively improve the space utilization rate of the warehouse and the automation degree of warehouse operation, the tunnel type stacker is used as core goods hoisting equipment of the automatic vertical warehouse, the tunnel type stacker runs in a warehouse in a shuttling mode, appointed goods are automatically taken out of a goods shelf according to instructions of a dispatching system or placed in appointed goods grids, and common stackers can be divided into single-column stackers and double-column stackers according to different mechanical structural forms of the common stackers.

The tunnel type stacker at least comprises a walking operation mechanism, a stand column, a control cabinet, a cargo carrying platform, a winch lifting mechanism and the like, wherein the winch lifting mechanism adopts a winding drum and a steel wire rope mechanism to drive the cargo carrying platform to reciprocate along the vertical direction, and the cargo carrying platform is provided with a cargo fork device, so that the cargo storing and taking function is realized.

When the maintenance personnel maintain the pallet fork of the pallet, because the fork motor and other devices are positioned at the bottom of the pallet, if the pallet is maintained after the lowest point is reached, the maintenance personnel can enter a maintenance area without space and can not reach the parts to be maintained. In order to facilitate maintenance operation, after the cargo carrying platform is lifted to a certain height, maintenance personnel can maintain the parts such as the fork on the cargo carrying platform when entering the bottom area of the cargo carrying platform.

However, after the cargo carrying platform is lifted to a certain height, the accident that the steel wire rope suddenly falls after being broken exists, so that how to simply and reliably provide supporting force for the cargo carrying platform and protect the safety of maintenance personnel is the problem which is solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model provides a stacker aims at providing the holding power for the cargo bed of stacker convenient and reliable.

The utility model provides a stacker includes: the rack comprises an upright post; the cargo carrying platform is provided with a frame, and the frame can move along the height direction of the upright post; the supporting component is telescopically fixed on the frame and has an extending position and a contracting position, and when the supporting component is in an extending state, the supporting component provides supporting force for the cargo carrying platform; the first driving assembly is fixed on the frame and used for driving the supporting assembly to switch between the stretching state and the contraction state.

In the utility model, based on the structure, the support component comprises a support rod, one end of which is rotatably fixed on the frame; when the other end of the supporting rod is propped against the external supporting plane, the supporting rod is in an extension state, and when the other end of the supporting rod is contracted at the lower side or the inner side of the frame, the supporting rod is in a contraction state; the first driving component is used for driving the supporting rod to rotate so as to switch the supporting rod between an extension state and a contraction state.

The utility model discloses in, based on aforementioned structure, at least a pair of bracing piece sets up relatively on the frame, and relative motion is done to at least a pair of bracing piece of first drive assembly drive, and relative motion includes relative motion and opposite movement, and the time that each bracing piece switches between extension state and shrink state matches each other.

The utility model discloses in, based on aforementioned structure, the bracing piece supports the one end of holding outside support plane and has the supporting part, and the supporting part is square disk or disc, and the cross-sectional area of supporting part is greater than the cross-sectional area of bracing piece.

In the utility model, based on the above structure, the support assembly further comprises a rotating shaft, the rotating shaft is rotatably fixed on the frame, one end of the rotating shaft is fixed on the frame, the other end of the rotating shaft is fixed on the first driving assembly, and one end of the support rod is sleeved on the rotating shaft; the first driving component is used for driving the rotating shaft to rotate; under the condition that the rotating shaft rotates, the supporting rod is driven to rotate.

In the utility model, based on the structure, the support component further comprises a first fixed seat which is fixedly arranged on the frame; the supporting component further comprises a bearing, an outer ring of the bearing is fixed in the first fixing seat, an inner ring of the bearing is sleeved on the rotating shaft, the bearing further comprises a limiting end cover, the limiting end cover is provided with two limiting portions, the two limiting portions are located between the inner ring and the outer ring of the bearing, and therefore the supporting rod can rotate between the position in the extending state and the position in the contracting state.

The utility model discloses in, based on aforementioned structure, first drive assembly includes the sticking department, and when supporting component was in extension state or shrink state, first drive assembly drive sticking department band-type brake was locked to the positional relationship of fixed supporting component and frame.

In the utility model, based on the structure, the stacker further comprises a second driving assembly which is fixed on the frame and used for driving the frame to move along the vertical direction of the upright; after the second driving assembly lifts the cargo bed, the first driving assembly drives the supporting assembly to switch between an extended state and a retracted state.

In the utility model, based on the structure, the stacker further comprises a walking running mechanism, and the walking running mechanism is used for moving the stacker in the horizontal direction; when the supporting component is in an extending state, the supporting component is supported on the walking operation mechanism and provides supporting force for the cargo carrying platform.

In the utility model, based on the structure, the cargo carrying platform further comprises a fork assembly, the fork assembly is fixed on the frame, and the fork assembly comprises at least two forks, a fork driving motor and a fork coupler; when the supporting component is in a contraction state, the supporting component is attached to the lower portion of the frame and staggered with the fork, the fork driving motor and the fork coupler.

Compared with the prior art, the utility model, following advantage and beneficial effect have: the utility model provides a supporting component is fixed with on the cargo carrying platform of stacker, and supporting component is collapsible to be stretched to conveniently use when needs support, thereby save time, convenient and reliable provide the support for cargo carrying platform, and supporting component also is difficult for losing.

Drawings

For the purpose of illustration, the invention is described in detail with reference to the following preferred embodiments and the accompanying drawings.

Fig. 1 is a schematic structural diagram of a stacker according to an embodiment of the present invention;

FIG. 2 is a schematic illustration of the position of the support assembly with the cargo bed in a retracted state according to one embodiment;

fig. 3 is a schematic structural view of a support assembly according to an embodiment of the present invention;

fig. 4 is a schematic view of the position of the cargo bed when the support assembly is in an extended state according to an embodiment of the present invention.

Reference numbers and corresponding part names in the drawings:

100-running mechanism, 200-control cabinet, 300-hoisting lifting mechanism, 400-steel wire rope, 600-upright post, 700-cargo carrying platform, 800-supporting component, 201-supporting rod, 202-rotating shaft, 203-first driving component, 204-first fixing component, 205-bearing, 206-supporting part, 701-frame, 702-fork, 703-fork driving motor and 704-fork coupler.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The utility model discloses an among the correlation technique, supporting component is the spare part that is independent of the platform that carries cargo, and when the platform that carries cargo need be maintained at every turn, need will carry cargo earlier and promote to a definite position with carrying cargo the platform, assemble supporting component on running gear again to utilize the bracing piece support to be connected bracing piece and stand guide rail, will carry cargo the platform after having installed and descend to suitable position again. This solution has the following problems: (1) the supporting rod is independent of the cargo carrying platform, and the supporting rod needs to be installed manually during maintenance each time, so that time and labor are wasted; (2) the supporting rod is independent of the cargo carrying platform, and after the supporting rod is lost without maintenance for a long time, the supporting rod needs to be remanufactured to continue maintenance; (3) when not maintaining, the bracing piece needs extra to look for the space and deposits, and is very inconvenient.

The utility model provides an integrated stacker that has supporting component. Fig. 1 is a schematic structural diagram of a stacker provided in an embodiment of the present invention, as shown in fig. 1, the stacker includes a walking mechanism 100, a control cabinet 200, a hoisting mechanism 300, a steel wire rope 400, a column 600, a cargo carrying platform 700, and a supporting assembly 800. The control cabinet 200 is provided with a controller which is electrically connected with the driving units of the components of the stacker and is used for controlling the components of the stacker to move so as to complete the set work in a matching way. Specifically, under the control of the controller, the walking mechanism 100 is driven to reciprocate on the ground rail, and the whole stacker is driven to move under the condition of the movement of the walking mechanism, so that the goods placed on the goods carrying table are horizontally conveyed. The hoisting mechanism 300 comprises a corresponding hoisting mechanism driving motor and a winding drum, one end of the steel wire rope 400 is fixed and wound on the winding drum, the winding drum is driven by the hoisting mechanism driving motor to rotate under the control of the controller, and the winding drum drives the steel wire rope 400 to drive the whole goods carrying platform to do reciprocating motion along the height direction of the upright column so as to realize the stacking and taking out of goods.

It should be noted that the hoisting mechanism 300 may include a steel wire rope 400 and a winding drum, and the steel wire rope 400 is wound in or paid out through a transmission device, so as to realize the lifting movement of the cargo platform and the materials thereon. Therefore, the driving force of the driving part corresponding to the hoisting mechanism is converted into vertical up-and-down linear motion of the cargo carrying platform. The driving motor of the hoisting mechanism corresponding to the hoisting mechanism can comprise a normally closed brake, the brake is released when the brake is switched on, the mechanism operates, and the brake stops when the brake is switched off, so that the cargo carrying platform and the cargo stop lifting and keep static. The hoisting mechanism 300 may be replaced by a chain hoisting mechanism, a traction hoisting mechanism, or other hoisting mechanisms according to actual conditions, and is not limited herein.

The load platform has a frame 701, which may be a square frame, with one end of a support member 800 movably secured to the load platform frame, and the support member being extendable and retractable. When the supporting component is in an extending state, the supporting component is abutted against the external supporting plane, and supporting force can be provided for the cargo carrying platform. The support assembly 800 may be a support rod as shown in fig. 1, a support frame similar to a fishing net structure, a tripod-like mechanism, or other structures, but not limited thereto. The material of the support member may comprise steel or wood.

The first driving component is a component for driving the supporting component to switch between the extended state and the retracted state, and may be a motor, the first driving component is fixed on the frame of the cargo carrying platform, and may be controlled by a controller of the cargo carrying platform, for example, the controller in the control cabinet 200 in fig. 1, under a control instruction of the controller, the driving supporting component completes switching between the extended state and the retracted state, and may also be controlled by a separate controller, and the separate controller may be fixed on the frame of the cargo carrying platform, so as to facilitate control of the supporting component. Specifically, a controller for the support assembly alone may be mounted on the cargo bed, and a trigger device such as a button may be used to trigger the controller to issue a state switching command, so that the controller receives a control command from a user and controls the support assembly to complete switching between states. The supporting component has an extended position and a retracted position, when the supporting component is located at the extended position, the supporting component is in the extended state, when the supporting component is located at the retracted position, the supporting component is in the retracted state, illustratively, if the supporting component is a supporting rod, the retracted position is a position where the supporting rod is located on the lower side of the loading platform frame, the supporting position is a position where the supporting rod is perpendicular to the loading platform, and the controller controls the supporting component to move between the extended position and the retracted position, so that switching between the extended state and the retracted state is realized.

From this, through fixed supporting component on the platform of carrying cargo, at every turn when the platform of carrying cargo needs to support, the controller receives the corresponding instruction of user, and the first drive assembly drive supporting component of control switches into the state of extending, and when the platform of carrying cargo need not support, the controller receives the corresponding instruction of user, and the first drive assembly drive supporting component of control switches into the contraction state, is independent parts's stacker for supporting component, the utility model discloses a stacker need not artifical installation operation, also need not to look for the space in addition and deposit the bracing piece, can also practice thrift the parking space of bracing piece, can also avoid leading to the problem that supporting component loses because of not maintaining for a long time, labour saving and time saving, it is very convenient.

Specifically, in one embodiment, the support assembly may include a support rod having one end rotatably fixed to the frame of the cargo bed, and the first driving assembly may be configured to drive the support rod to rotate to switch between the extended state and the retracted state. Specifically, when the bracing piece switches to the extension state, first drive assembly drive bracing piece rotates to and carries cargo bed vertically position, and supports and hold on outside supporting plane to for carrying cargo bed provides the holding power, when the bracing piece switches to the shrink state, first drive assembly drive bracing piece rotates to the position of laminating and carries cargo bed downside, thereby packs up the bracing piece, makes its normal stack work that does not influence the stacker. Therefore, the purpose of conveniently and reliably supporting the cargo carrying platform is achieved, and the supporting rods are not easy to lose.

Further, in another embodiment, the support rods may be provided in pairs, and the two support rods are fixed to two opposite side frames of the cargo bed frame. The first driving component drives the two supporting rods to rotate oppositely or reversely. Specifically, when needing the bracing piece to switch into the shrink state, two bracing pieces of first drive assembly drive are rotatory in opposite directions simultaneously to make the bracing piece shrink to frame in or the frame downside, when needing the bracing piece to switch into the support state, two bracing pieces of first drive assembly drive counter-rotation, it is perpendicular until the bracing piece with carry cargo bed frame, thereby can provide direction of height's holding power for carrying cargo bed. It should be noted that, the number of the support rods is not limited herein, that is, the support rods may be one pair or two pairs. The position of the support rod in the contraction state is not limited, that is, the support rod can be contracted into the frame in a rotating manner or to the lower side of the frame, and the support rod can be contracted to a position which does not influence the normal work of the stacker.

First drive assembly can be the motor, can only accomplish the switching between the state by a motor drive supporting component, that is to say, this motor can drive a pair of bracing piece simultaneously and rotate, it is schematic, this motor can drive a motor rotation axis who has fixed supporting component and rotate, a driving gear can be fixed respectively at this motor rotation axis both ends, the bracing piece can overlap establish a driven rotation axis on, this driven rotation axis's one end is fixed with the driven gear who meshes with this driving gear mutually, thereby the realization is rotated simultaneously by a motor drive pair of bracing piece. In another embodiment, the stacker crane may further have a plurality of motors, each of which drives one of the support rods to rotate. In other embodiments, one motor may also drive two pairs of support rods to rotate, and the number of motors and the transmission mode are not limited herein.

Specifically, in one embodiment, the supporting assembly may further include a rotating shaft, the rotating shaft is rotatably fixed to the frame, one end of the supporting rod is sleeved on the rotating shaft, and the first driving assembly is configured to drive the rotating shaft to rotate; under the condition that the rotating shaft rotates, the supporting rod is driven to rotate, and therefore the supporting rod is switched between the contraction state and the extension state.

Furthermore, the rotating shaft can be fixed on the frame through the first fixing piece, the supporting assembly further comprises a bearing, an outer ring of the bearing is fixed in the first fixing seat, an inner ring of the bearing is sleeved on the rotating shaft, the bearing is further provided with a limiting end cover, the limiting end cover is provided with two limiting portions, and the two limiting portions are located between the inner ring and the outer ring of the bearing, so that the supporting rod can rotate between the position in the extending state and the position in the contracting state. The bearing can be a rolling bearing, and the inner ring of the bearing is tightly sleeved on the rotating shaft to prevent the bearing from moving on the shaft or in the bearing seat hole. The contained angle between two spacing portions of the spacing end cover of bearing can be 90 degrees to realize that the bracing piece rotates between the position of perpendicular to cargo carrying platform and the position that is on a parallel with cargo carrying platform. The contained angle between two spacing portions also can slightly be less than 90 degrees to realize that the bracing piece rotates between the position of perpendicular to year goods platform and the position of shrink in year goods platform downside, can also be other arbitrary angles, only need realize pleasing to the eye, convenient storage, and do not influence normal stack of stacker, walking work when the shrink can.

Further, in an embodiment, one end of the rotating shaft is fixed in the first fixing seat, the first fixing seat may be fixed on the cargo table frame by screws, the first fixing seat may also be welded on the cargo table frame, the other end of the rotating shaft is connected with the first driving assembly, specifically, the first driving assembly is fixed on the cargo table frame, the rotor of the first driving assembly is connected with the rotating shaft by a transmission mechanism such as a gear, so as to drive the rotating shaft to rotate, and the rotor of the first driving assembly may also be directly fixedly connected with the rotating shaft, so as to drive the rotating shaft to rotate, which is not limited herein. Under the condition that the rotating shaft rotates, the supporting rod is driven to rotate, and therefore the supporting rod is switched between the stretching state and the contracting state. In one embodiment, the first driving assembly may include a stepping motor having a locking portion, the locking portion being a locking structure of a brake, and when the support rod is moved to a set extended state or a set retracted state, the motor drives the locking portion to lock so as to prevent the rotation shaft from moving again, thereby fixing a position relationship between the support rod and the cargo carrying platform. Therefore, the supporting device can provide reliable supporting force for the goods carrying platform in the extension state, cannot easily fall down in the contraction state, does not interfere normal stacking and walking operation of the goods carrying platform, and is reliable and safe.

On the basis of the foregoing embodiment, in an embodiment, the utility model provides a stacker still has second drive assembly, and second drive assembly can be hoist mechanism driving motor as before, and second drive assembly fixes in the frame of stacker for the frame of drive cargo bed moves along the vertical direction of stand. Specifically, after the controller controls the supporting assembly to be switched from the contraction state to the extension state, the second driving assembly is controlled to lift the goods carrying platform to rise by a certain height, the first driving assembly is controlled to drive the supporting assembly to extend until the supporting assembly reaches the position in the extension state, and then the second driving assembly is controlled to control the goods carrying platform to descend until one end, deviating from the goods carrying platform, of the supporting assembly contacts with the ground, so that the supporting assembly can provide supporting force for the goods carrying platform. Therefore, the controller controls the first driving assembly to be matched with the second driving assembly, and the supporting assembly is conveniently and reliably switched between the two states.

In one embodiment, based on the above structure, one end of the supporting component is movably fixed on the frame of the cargo carrying platform, and the other end of the supporting component can be aligned with the walking running mechanism of the stacker, when the supporting component is in an extension state, the supporting component is supported on the walking running mechanism, and as the walking running mechanism is usually made of metal and has a known height, a stable supporting environment can be provided for the cargo carrying platform, so that the supporting component can stably and reliably provide supporting force for the cargo carrying platform.

Further, at the other end that the bracing piece deviates from the cargo bed, the bracing piece can also have a supporting part, and the supporting part can be disc or square plate shape, and its cross-sectional area is greater than the cross-sectional area of bracing piece to increase in ground or with the area of contact of walking operation structure, make the bracing piece be difficult for sliding, thereby improve the steadiness and the reliability of supporting.

Fig. 2 is a schematic view of a support assembly in a retracted state according to an embodiment of the present invention.

As shown in fig. 2, in this embodiment, the load bed further includes a fork assembly secured to the frame 701 of the load bed. The frame 701 of the cargo bed may be formed by welding channel steel, iron plates, and the like. The fork assembly further comprises at least two forks 702, a fork drive motor 703 and a fork coupling 704; the fork 702 can be a bidirectional telescopic fork, the telescopic fork can use gears and chain transmission to realize differential telescopic, and the fork 702 is driven by the fork driving motor 703 and the fork coupler 704, and is telescopic, so that the goods can be stored and taken out. The supporting component 800 can be welded on the frame, when the supporting component 800 is in a contraction state, the supporting group rods are attached below the frame 701 or hidden in the frame 701, and are staggered with the fork 702, the fork driving motor 703 and the fork coupler 704, so that the space is saved, the normal stacking operation of the stacker is not influenced, and the stacking machine is attractive and practical.

For ease of understanding, the support assembly of the present invention is described below in terms of a specific embodiment.

Fig. 3 is a schematic structural diagram of a support assembly according to an embodiment of the present invention; FIG. 4 is a schematic view of the support assembly in an extended position with the cargo bed according to one embodiment.

As shown in fig. 3 and 4, in the present embodiment, the supporting assembly includes two pairs of supporting rods 201, a rotating shaft 202, a first driving assembly 203, a first fixing member 204, a bearing 205, and a limiting end cover. One end of the support rod 201 is tightly sleeved on the rotation shaft 202, and the other end of the support rod has a support portion 206 to realize stable support of the cargo carrying platform. Wherein, a first driving component, such as a motor, is fixed on the square tube structure of the cargo platform frame 701, the rotating shaft is fixedly connected with the rotor of the first driving component 203 through a bolt, and the rotating power of the motor is transmitted to the rotating shaft 202 through the motor rotor. The support rod 201 is fixedly connected with the rotating shaft 202 by welding. The first fixing seat, which may also be a bearing seat, is fixed on the square tube structure of the cargo bed frame 701, the bearing 205 is installed on the bearing seat, and the limit end cover of the bearing seat is fixedly connected with the bearing seat bolt. The bearing seat limiting end cover plays a limiting role in the axial direction of the bearing. The rotating shaft is also carried on the bearing at the same time. The supporting components are respectively provided with one group at two ends of the bottom of the goods carrying platform, so that the first driving component can drive the group of supporting components to be switched between an extending state and a contracting state, and the goods carrying platform can be conveniently and reliably supported.

In the description herein, references to the term "one embodiment" or "an embodiment" mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or the example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A stacker, comprising:

a frame comprising a column;

a cargo bed having a frame movable in a height direction of the column;

the supporting component is telescopically fixed on the frame and has an extending position and a contracting position, and when the supporting component is in an extending state, the supporting component provides supporting force for the cargo carrying platform;

the first driving assembly is fixed on the frame and used for driving the supporting assembly to switch between an extending state and a contracting state.

2. The stacker according to claim 1 wherein the support assembly comprises a support bar, one end of the support bar being rotatably fixed to the frame; when the other end of the supporting rod is abutted against an external supporting plane, the supporting rod is in an extension state, and when the other end of the supporting rod is contracted at the lower side or the inner side of the frame, the supporting rod is in a contraction state; the first driving component is used for driving the supporting rod to rotate so as to enable the supporting rod to be switched between an extension state and a contraction state.

3. The stacker according to claim 2 wherein at least one pair of the support bars are oppositely disposed on the frame, and the first driving assembly drives the at least one pair of the support bars to move relatively, wherein the relative movement comprises a relative movement and an opposite movement, and the switching time of the support bars between the extended state and the retracted state is matched.

4. The stacker according to claim 2 wherein one end of the support bar abutting against the external support plane has a support portion, the support portion is in the shape of a square or a disc, and the cross-sectional area of the support portion is larger than that of the support bar.

5. The stacker according to claim 2 wherein the support assembly further comprises a rotating shaft, the rotating shaft is rotatably fixed to the frame, one end of the rotating shaft is fixed to the frame, the other end of the rotating shaft is fixed to the first driving assembly, and one end of the support rod is sleeved on the rotating shaft; the first driving component is used for driving the rotating shaft to rotate; and under the condition that the rotating shaft rotates, the supporting rod is driven to rotate.

6. The stacker according to claim 5 wherein the support assembly further comprises a first fixed seat fixedly disposed on the frame; the supporting component further comprises a bearing, an outer ring of the bearing is fixed in the first fixing seat, an inner ring of the bearing is sleeved on the rotating shaft, the bearing further comprises a limiting end cover, the limiting end cover comprises two limiting portions, and the two limiting portions are located between the inner ring and the outer ring of the bearing, so that the supporting rod rotates between the position in the extending state and the position in the contracting state.

7. The stacker according to claim 1 wherein the first drive assembly comprises a locking portion, and when the support assembly is in the extended state or the retracted state, the first drive assembly drives the locking portion to lock so as to fix the positional relationship of the support assembly and the frame.

8. The stacker according to any one of claims 1 to 7 further comprising a second drive assembly, said second drive assembly being fixed to said frame and adapted to drive said frame to move in a vertical direction along said upright; after the second driving assembly lifts the cargo carrying platform, the first driving assembly drives the supporting assembly to switch between an extending state and a contracting state.

9. The stacker according to any one of claims 1 to 7, wherein said stacker further comprises a traveling mechanism for moving said stacker in a horizontal direction; when the supporting component is in an extending state, the supporting component is abutted against the walking operation mechanism and provides supporting force for the cargo carrying platform.

10. The stacker of any one of claims 1 to 7 wherein the load bed further comprises a fork assembly, the fork assembly being fixed to the frame, the fork assembly comprising at least two forks, a fork drive motor and a fork coupling; when the supporting component is in a contraction state, the supporting component is attached to the lower portion of the frame and is staggered with the fork, the fork driving motor and the fork coupler.

Images