CN218318989U

CN218318989U - Protection device and movable platform

Info

Publication number: CN218318989U
Application number: CN202221737439.9U
Authority: CN
Inventors: 方元; 李文华; 陈首先; 孙逸超; 陈群英
Original assignee: Hangzhou Iplus Tech Co ltd
Current assignee: Hangzhou Iplus Tech Co ltd
Priority date: 2022-07-07
Filing date: 2022-07-07
Publication date: 2023-01-17
Anticipated expiration: 2032-07-07

Abstract

The utility model provides a protector and movable platform, relates to the robotechnology field, among the protector: the adjustable protection mechanism comprises first protection parts which are oppositely arranged along the first direction, and a protection limiting space at least formed in the first direction is formed between the first protection parts which are oppositely arranged. The driving mechanism comprises a power source and a transmission assembly, wherein the transmission assembly is provided with a first connecting point connected with one of the protection pieces and a second connecting point connected with the other protection piece. The first connecting point and the second connecting point of the transmission assembly are synchronously close to a protection limiting space formed by the first driving protection piece along the first direction to be reduced, and are far away from the protection limiting space formed by the first driving protection piece to be enlarged. The movable platform comprises a chassis and a working platform, and the working platform comprises a lifting platform and a fixed platform. The lifting platform is provided with a protection device. The lifting platform is provided with a driving and transporting mechanism, and a lifting mechanism is arranged below the lifting platform. The utility model discloses be difficult to bump when receiving the goods, have protection effect and stability concurrently.

Description

Protection device and movable platform

Technical Field

The utility model relates to the technical field of robot, especially, relate to a protector and movable platform.

Background

In the process of transporting goods by the movable platform, because the goods can deviate relative to the movable platform due to the condition of turning and uneven ground, the goods are protected by the protection device. However, the existing protection device can limit the goods in a certain space while protecting the goods, so that the goods can be easily collided with the protection device when being taken or placed, and the impact caused by the collision can cause the offset of the movable platform, so that the deviation occurs in the previously confirmed positioning, and the normal transportation of the goods is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the problem that above-mentioned prior art exists, provide a protector and movable platform.

In a first aspect, the present invention relates to a protective device, including:

the adjustable protection mechanism comprises first protection parts which are oppositely arranged along a first direction, and protection limiting spaces at least formed in the first direction are formed between the oppositely arranged first protection parts;

the driving mechanism comprises a power source and a transmission assembly driven by the power source, and the transmission assembly is provided with a first connecting point connected with one of the protection pieces and a second connecting point connected with the other protection piece;

the first connecting point and the second connecting point of the transmission assembly synchronously approach to and drive the protection limiting space formed by the protection piece to be reduced along the first direction, and the first connecting point and the second connecting point of the transmission assembly synchronously depart from and drive the protection limiting space formed by the protection piece to be enlarged along the first direction.

Before the movable platform carries or unloads goods, under the action of the adjustable protection mechanism, the protection limiting space is enlarged, so that the space for receiving goods by the movable platform is larger, and the goods are not easy to collide to influence the carrying when being received. When carrying goods, the protection limiting space shrinks to ensure the protection effect on goods and the stability of transportation.

In an implementation technical solution, the protection device further includes an auxiliary protection mechanism, the auxiliary protection mechanism is located at the first protection position, the auxiliary protection mechanism forms a double-sided protection restriction space in the second direction, the auxiliary protection mechanism is located at the second protection position, and the auxiliary protection mechanism forms a single-sided protection restriction space in the second direction; the second direction is perpendicular to the first direction.

In an implementation technical scheme, the auxiliary protection mechanism comprises at least one group of second protection parts which are oppositely arranged along the second direction, the second protection parts comprise second protection parts, and the second protection parts on at least the same side are connected with a lifting assembly; the lifting assembly drives the protection stopper to descend to a first position, the auxiliary protection mechanism forms a single-side protection limiting space in a second direction, the lifting assembly drives the protection stopper to ascend to a second position, the auxiliary protection mechanism forms a double-side protection limiting space in the second direction, and the second position is higher than the first position.

In one embodiment, the transmission assembly comprises a protection triggering component, a protection action component and an extension component; the protection trigger component is rotatably connected with the power source, one end of the protection action component is rotatably connected with the protection trigger component, one end of the extension component is rotatably connected with the protection action component, and the other end of the extension component extends upwards and is fixed with the protection component I; the protection trigger component is provided with a third connecting point connected with the power source, a fourth connecting point and a fifth connecting point connected with the protection action component, and the fourth connecting point and the fifth connecting point are arranged in axial symmetry relative to the third connecting point.

In one implementation technical scheme, a first guide piece is connected with the protection piece, and the first guide piece is vertically arranged below the protection piece; the first guide part comprises a guide sliding block and a guide sliding rail, and the guide sliding block is sleeved on the guide sliding rail and slides along the first direction.

In one embodiment, a second guiding element is connected to the first protecting element, and the second guiding element comprises a first guiding part and/or a second guiding part;

the first guide part is provided with a guide inclined plane, and the guide inclined plane is arranged at least one end part of the first protection part;

the second guide part is provided with a roller, and an installation shaft of the roller is arranged at one position of the protection part along a third direction; the third direction is perpendicular to the first direction.

In one implementation technical scheme, a limit component is connected with the protection part, the limit component comprises a limit trigger, a reduction limiting piece and an expansion limiting piece, the reduction limiting piece is located at the reduction limit position of the protection limiting space, the expansion limiting piece is located at the expansion limit position of the protection limiting space, and the reduction limiting piece and the expansion limiting piece are both arranged on the moving path of the limit trigger; or, the limiting assembly comprises a central limiting part, the central limiting part is located at a position between the reduction limit position of the protection limiting space and the expansion limit position of the protection limiting space, and the central limiting part is arranged on a moving path of the limiting trigger.

In a second aspect, the present invention relates to a movable platform, comprising:

the device comprises a chassis and a working platform arranged above the chassis, wherein the working platform comprises a lifting platform and a fixed platform; the lifting platform is provided with a protective device;

the lifting platform is provided with a driving and conveying mechanism;

and a lifting mechanism is arranged below the lifting platform, and when the lifting mechanism is positioned at the highest position of the lifting mechanism, the lifting platform is flush with the fixed platform.

In one embodiment, the driving transportation mechanism comprises a transportation power source and at least one chain transportation component driven by the transportation power source, and the chain transportation components are arranged at intervals along a first direction

In one embodiment, the fixed platform includes a plurality of support mechanisms disposed at intervals, and the support mechanisms and the chain conveying assemblies are alternately disposed in a first direction; the top end of the supporting mechanism is provided with a plurality of rolling parts.

After the structure more than adopting, compared with the prior art, the utility model, have following advantage:

before the movable platform carries goods or unloads the goods, under the action of the adjustable protection mechanism, the protection limiting space is enlarged, so that the space for receiving the goods by the movable platform is larger, and the goods are not easy to collide to influence the carrying of the goods when the goods are received. When carrying goods, the protection limiting space shrinks, the protection effect on goods is guaranteed, and the stability of transportation is guaranteed.

Drawings

Fig. 1 is an overall schematic view of the protection device of the present invention on a movable platform.

Fig. 2 is a schematic view of an adjustable protection mechanism of the protection device of the present invention.

Fig. 3 is a schematic view of an auxiliary protection mechanism of the protection device of the present invention.

Fig. 4 is a schematic bottom view of the transmission assembly of the protection device of the present invention.

Fig. 5 is a schematic view of a first guiding member of the protection device of the present invention.

Fig. 6 is a schematic view of a limiting component of the protection device of the present invention.

Fig. 7 is a schematic view of the lifting platform of the movable platform of the present invention in a rising state.

Fig. 8 is a schematic view of the lifting platform of the movable platform of the present invention in a descending state.

In the figure: 1-guard first, 11-vertical plate, 12-transverse plate, 13-guide first, 131-guide slider, 132-guide slide rail, 14-guide second, 141-first guide, 142-second guide, 15-limit component, 151-limit trigger, 1511-shrink induction hook, 1512-enlarge induction hook, 1513-center induction hook, 152-shrink limit component, 153-enlarge limit component, 154-center limit component, 2-guard second, 21-guard stop component, 22-electric push rod, 23-mounting rack, 24-lift limit component, 241-limit action component, 242-lift limit component, 243-fall limit component, 3-transmission component, 31-guard trigger component, 32-guard action component, 33-extension component, 4-power source, 5-chassis, 6-work platform, 61-lift platform, 62-fixed platform, 621-support mechanism, 6211-rolling element, 7-drive transport mechanism, 71-chain transport component.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

The technical solutions in the embodiments of the present invention will be described below clearly with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

All the directional indicators in the embodiments of the present invention are only used to explain the relative position relationship between the components in a specific posture, and if the specific posture changes, the directional indicators also change accordingly. In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature.

As shown in fig. 1-4, the present invention relates to a protective device, comprising:

the adjustable protection mechanism comprises first protection parts which are oppositely arranged along a first direction, and protection limiting spaces at least in the first direction are formed between the oppositely arranged first protection parts.

The driving mechanism comprises a power source and a transmission assembly driven by the power source, and the transmission assembly is provided with a first connecting point connected with one of the protection pieces and a second connecting point connected with the other protection piece.

The first connecting point and the second connecting point of the transmission assembly synchronously approach to and drive the protection limiting space formed by the first protection part to be reduced along the first direction, and the first connecting point and the second connecting point of the transmission assembly synchronously move away from and drive the protection limiting space formed by the first protection part to be enlarged along the first direction.

Before the movable platform carries or unloads goods, under the action of the adjustable protection mechanism, the protection limiting space is enlarged, so that the space for receiving goods by the movable platform is larger, and the goods are not easy to collide to influence the carrying when being received. When carrying goods, the protection limiting space shrinks, the protection effect on goods is guaranteed, and the stability of transportation is guaranteed. The first direction is perpendicular to the loading direction of the movable platform, and the protection pieces arranged oppositely along the first direction play a role in protecting cargoes after loading. The protection limiting space at least in the first direction is formed between the oppositely arranged first protection parts, the protection of the first protection parts is generally in the first direction, but the shape of the first protection parts can be adjusted according to the shape of goods to be protected, and the protection in multiple directions is ensured.

The transmission assembly drives the protection piece I to move through the first connection point and the second connection point, and particularly the first connection point and the second connection point of the transmission assembly synchronously approach to and drive the protection limiting space formed by the protection piece I to be reduced along the first direction, so that the goods can be centered by synchronous approach, the stability of the gravity center of the whole movable platform is ensured, and the subsequent transportation of the movable platform cannot be influenced due to the fact that the goods enter the movable platform and have position deviation when the protection limiting space is enlarged. The first connecting point and the second connecting point of the transmission assembly are synchronously far away from the first protection piece along the first direction to drive the first protection limiting space formed by the first protection piece to be expanded, so that the synchronous far away enables the empty spaces at two sides to be the same when objects are unloaded, and the objects are not easy to collide with the first protection piece when moving.

In some embodiments, the side of the cargo facing the first protection member is a plane, the first protection member may adopt a plate-shaped structure, the plate-shaped structure may be disposed at the middle of two sides of the movable platform perpendicular to the direction of the cargo, or a plurality of groups of the first protection members may be uniformly disposed for protection, and more preferably, the width of the plate-shaped structure may be the same as the width of the movable platform in the first direction, so that the protection can be performed more comprehensively, and the driving of the first protection member is also facilitated. The first protection piece can adopt a curved plate-shaped structure to form a protection limiting space in each direction of the curved surface. The surface of the cargo facing the protection piece is an irregular undulating surface, and the protection piece can adopt a plate-shaped structure, a curve plate-shaped structure or a customized plate-shaped structure which is attached to the irregular undulating surface.

Because the movable platform is arranged, the transmission assembly is not always arranged at the same height as the adjustable protection mechanism, so that a certain height difference exists, and therefore, as shown in fig. 2, the protection member can also adopt an L-shaped structure and comprises a vertical plate and a transverse plate which are perpendicular to each other, wherein the vertical plate is used for protection, and the transverse plate is used for connecting the transmission assembly.

In some embodiments, the protection device further comprises an auxiliary protection mechanism, the auxiliary protection mechanism is located at the first protection position, the auxiliary protection mechanism forms a double-sided protection limiting space in the second direction, the auxiliary protection mechanism is located at the second protection position, and the auxiliary protection mechanism forms a single-sided protection limiting space in the second direction. The second direction is perpendicular to the first direction. The second direction is the same as the direction of the movable platform, and the double-side protection limiting space can protect the goods from both sides of the loading direction and is generally applied to the transportation process. The single-side protection limiting space can be used for conveniently carrying goods and protecting the goods, is generally applied to the goods carrying and unloading process, and can form the double-side protection limiting space after the goods carrying and unloading process is completed.

In some embodiments, as shown in fig. 3, the auxiliary protection mechanism includes at least one second protection component set oppositely along the second direction, the second protection component includes a second protection component, and at least the second protection component on the same side is connected to a lifting component. The lifting assembly drives the protection stopper to descend to a first position, the auxiliary protection mechanism forms a single-side protection limiting space in a second direction, the lifting assembly drives the protection stopper to ascend to a second position, the auxiliary protection mechanism forms a double-side protection limiting space in the second direction, and the second position is higher than the first position. The first position is located below the working platform interior of the movable platform so as not to collide with cargo. The second position is higher than the working platform of the movable platform, and protection is effectively carried out. Therefore, if only the second protection piece at the same side can be lifted, when the second protection piece is lifted, the second protection piece is abutted to the object carrying position, the second protection piece is firstly lifted to obtain the goods, and then the second protection piece is lifted to protect the goods. More preferably, the two opposite guards can be lifted, so that when the movable platform carries a load, the two guards on one side facing the load can be controlled to descend below the loading plane of the movable platform for loading, the two guards on the other opposite side are kept higher than the loading plane of the movable platform for protection, and after the movable platform carries the load, the two lowered guards rise. Carry the thing direction and have two like this, need not unnecessary must adjust and carry the thing orientation, avoid carrying the thing and the unable normal condition of carrying the thing in the less department in adjustment space, improve and carry thing efficiency and transportation flexibility.

In some examples, the protective barrier 21 may have a plate-like structure, and preferably has a three-dimensional cylindrical structure. The lifting assembly can adopt an air cylinder, and preferably, an electric push rod is more convenient to adopt. The driving end of the electric push rod is fixed on the protective blocking piece, the protective piece II is fixed on the movable platform through the mounting frame, and the bottom of the electric push rod is fixed on the mounting frame. The number of the second protection parts can be two, two protection parts are arranged on each side of the movable platform in the loading direction at intervals, so that the lifting efficiency is high, the energy consumption is low, and the protection effect is guaranteed.

In some examples, the second shield piece includes a shield stop and a lift assembly, and the second shield piece includes a lift stop assembly including a stop motion member, a lift limiting member, and a lift limiting member. The limiting action piece 241 is fixed on the protective stopper, the ascending limiting piece is fixed on the mounting frame on one side of the ascending direction of the protective stopper to limit the ascending limit position of the protective piece two, and the descending limiting piece is fixed on the mounting frame on one side of the descending direction of the protective stopper to limit the descending limit position of the protective piece two. The descending limiting piece can be of a plate-shaped structure, the ascending limiting piece is of a plate-shaped structure with a groove in the middle, the limiting action piece is of a rod-shaped structure capable of passing through the groove of the ascending limiting piece, the lower end of the limiting action piece is provided with a stop block which is wider than the groove of the ascending limiting piece, and therefore the stop block does not descend when touching the descending limiting piece and does not ascend when touching the ascending limiting piece, but the limiting piece is easy to damage.

More preferably, as shown in fig. 3, the descending limiting member and the ascending limiting member are both photoelectric switches, and the limiting actuator has a plate-like structure. The limiting action piece can shield the induction end of the photoelectric switch in the lifting process. When two photoelectric switches all sense spacing action pieces, close lifting unit, for descending to the lowest department this moment. When two photoelectric switches do not sense the limiting action piece, the lifting assembly is closed, and the highest position is reached at the moment.

In some embodiments, the transmission assembly includes a guard trigger member, a guard action member, and an extension member. The protection trigger component is rotatably connected with the power source, one end of the protection action component is rotatably connected with the protection trigger component, one end of the extension component is rotatably connected with the protection action component, and the other end of the extension component extends upwards to be fixed with the protection component I. The protection trigger component is provided with a third connecting point connected with the power source, a fourth connecting point and a fifth connecting point connected with the protection action component, and the fourth connecting point and the fifth connecting point are arranged in axial symmetry relative to the third connecting point. Here, the fixed connection point of one guard operating member to one extension member is a first connection point, and the fixed connection point of the other guard operating member to one extension member is a second connection point. The other end of the extension part extends upwards to be fixed with the first protection part, so that the movable platform is more reasonable in layout, and the installation position of the transmission assembly cannot be influenced by the position of the first protection part. The fourth connection point and the fifth connection point are arranged in axial symmetry relative to the third connection point, so that the protection action part can be synchronously unfolded and folded under the action of the protection trigger part, and the synchronism is ensured.

In some embodiments, the protection triggering component may be an air cylinder, the protection action component is a push rod, the power source is an air compressor, and the air compressor provides air pressure to the air cylinder to enable the push rod to stretch and retract. But requires two cylinders and occupies a large space together with the air compressor. Therefore, in some embodiments, as shown in fig. 4, the shielding trigger component adopts a rotating rod, the shielding action component adopts a connecting rod, and the extending component adopts an extending rod. The power source can adopt the motor, and the drive end and the dwang of motor are fixed. The central point of the connecting part of the rotating rod and the motor driving end is a third connecting point, and the central points of the rotating connecting parts of the two connecting rods and the rotating rod are a fourth connecting point and a fifth connecting point. This arrangement occupies a small space and is inexpensive, and the guard members can be secured in synchronism with the opening and closing of the guard members.

In some embodiments, as shown in fig. 5, the protection member is connected with a first guiding element, and the first guiding element is vertically arranged below the protection member; the first guide part comprises a guide sliding block and a guide sliding rail, and the guide sliding block is sleeved on the guide sliding rail and slides along the first direction. Because the transmission mode of the transmission assembly causes the protection action part to have a certain angle deviation, the first guide piece is arranged on the first protection piece, so that the first protection piece is prevented from deviating from the direction vertical to the object carrying direction of the movable platform when being folded or unfolded, and the object carrying is prevented from being influenced. Namely, the guiding element can ensure that the unfolding and folding directions of the protection element are stable and cannot be changed due to the direction deviation of the pushing and pulling force of the transmission assembly. The guide sliding block is fixed on the adjustable protection mechanism, the guide sliding rail is fixed on the movable platform, or the guide sliding rail and the movable platform are fixed in a reverse direction, so that the same effect can be achieved.

In some examples, the first protection parts are provided with the first guide parts on two sides, so that the guide effect is better, and the first protection parts are not easy to be inclined in the folding and unfolding processes.

In some embodiments, a second guide is connected to the first guard, and the second guide comprises a first guide and/or a second guide. The first guide part is provided with a guide inclined plane, and the guide inclined plane is arranged at least one end part of the first protection part. The second guide part is provided with a roller, and an installation shaft of the roller is arranged at one position of the protection part along a third direction. The third direction is perpendicular to the first direction. When the goods enter the movable platform, the goods are inclined, and the first protection piece can be collided, so that the second guide piece is required to conduct direction guidance, and the goods can be stably entered into the movable platform. The guide inclined plane is used for guiding when goods just enter the movable platform, and if the goods are in contact with the protection piece after being guided, the goods are further guided through the rollers. And when one end of the goods directly enters the second guide part, the goods can be guided in a rolling way, and collision can not be generated. Therefore, the first guide part and the second guide part can be independently guided according to different conditions and can also be matched with each other to guide, so that the guiding effect is ensured, and the collision is comprehensively avoided.

In some embodiments, the protection piece is connected with a limit component, the limit component comprises a limit trigger, a reduction limiting piece and an expansion limiting piece, the reduction limiting piece is positioned at the reduction limit position of the protection limit space, the expansion limiting piece is positioned at the expansion limit position of the protection limit space, and the reduction limiting piece and the expansion limiting piece are both arranged on the moving path of the limit trigger. The limiting assembly can limit the moving range of the first protection part, prevent the first protection part from being unfolded for multiple degrees to lose the protection effect and prevent goods from being excessively folded and damaged. The limiting trigger piece can be of a plate-shaped structure, the reducing limiting piece and the unfolding limiting piece can both adopt limiting blocks, and the plate-shaped structure moves to the limiting blocks to be blocked so as to limit the moving position of the first protection piece, but the first protection piece is easy to damage and cause the movable platform to shake under collision. The centered limiting part can adopt a photoelectric switch to sense the limiting trigger.

More preferably, the limiting trigger is a plate-shaped structure and is provided with a sensing hook structure below, the narrowing limiting part and the expanding limiting part can both adopt photoelectric switches, the sensing hook passes through a sensing end of the photoelectric switch when the protecting part moves, and the photoelectric switch closes the power source after sensing the sensing hook so as to stop the transmission assembly and stop the moving of the protecting part. According to the limited range, only one induction hook can be arranged, so that the range is larger. And if the scope of restriction is less, can set up the response that two intervals set up and collude, two responses collude and do not avoid the response mistake, can be with setting up at the height of difference, it is relative photoelectric switch also sets up at the height of difference.

In some examples, as shown in fig. 6, or the limiting assembly includes a central limiting member, which is located at a position intermediate between the contracted limit position and the expanded limit position of the protection limit space, and is disposed on the path of movement of the limiting trigger member. Thus, the position of the shield member can be determined by the centering limiter when neither the reduction limiter nor the expansion limiter is activated. The number of the induction hooks and the position arrangement of the photoelectric switches can be set according to a specific limit range. As shown in the figure, the limiting trigger piece comprises a reduction induction hook, an expansion induction hook and a centering induction hook, and a folding photoelectric switch, an unfolding photoelectric switch and a centering photoelectric switch which are corresponding to the induction hooks.

As shown in fig. 7-8, the present invention relates to a movable platform, comprising: the device comprises a chassis and a working platform arranged above the chassis, wherein the working platform comprises a lifting platform and a fixed platform. The lifting platform is provided with a protection device. And the lifting platform is provided with a driving and conveying mechanism. And a lifting mechanism is arranged below the lifting platform, and when the lifting mechanism is positioned at the highest position of the lifting mechanism, the lifting platform is flush with the fixed platform.

After the movable platform carries the goods, a protection limiting space formed by an adjustable protection mechanism of the protection device can be reduced to protect the goods, particularly, when the protection piece is relatively folded, a centering effect can be achieved during reduction, so that the center of gravity of the movable platform is stable during subsequent transportation, and the service life of the movable platform is longer. But the goods have great friction after contacting with the work platform, the protection limiting space can not be normally reduced, or the goods are abraded, and the reduction direction is opposite to the running direction of the driving and conveying mechanism. Therefore, after the movable platform carries the object, the lifting platform descends, so that only the fixed platform supports the lifting platform, the supporting area is reduced, the friction force is reduced, and the lifting platform can be better pushed to be centered. And after the goods are placed in the middle, the lifting platform can rise to support the goods, and the supporting force is ensured to be sufficient.

In some embodiments, the driven transport mechanism includes a transport power source and at least one chain transport assembly driven by the transport power source, the chain transport assembly being spaced apart in a first direction. Chain transport assembly includes transport and holds carrier, the transport suit is established hold carrier is last, transport with the transportation power supply is connected, the drive of transportation power supply transport is followed the direction that holds carrier direction removes. The transportation piece can be a transportation chain, the bearing piece can be a conveying wheel, and the conveying wheel is arranged at two ends of the supporting track along the loading direction of the movable platform. A support rail may be disposed between the transport wheels and disposed along the second direction on the lift platform surface. The transportation power source can adopt driving motor, driving sprocket, drive chain, drive shaft and drive wheel, wear to be equipped with a driving sprocket and all drive wheels in the drive shaft, a driving sprocket is established to driving motor's drive end cover, overlaps on two driving sprockets and establishes the drive chain. The driving motor drives the driving shaft to rotate through the driving chain and the driving chain wheel and simultaneously drives the driving wheel to rotate. The transmission chain is sleeved on the transmission wheel, the conveying wheel and the supporting track and drives the transmission chain to move, the transmission chain moves along the reverse direction of the second direction during carrying, and the transmission chain moves along the second direction during unloading.

In some examples, the number of the chain type transportation assemblies may be three, two sides of the lifting platform are respectively provided with one chain type transportation assembly, and the middle of the lifting platform is provided with one chain type transportation assembly. The goods transportation is smoother and the stress is more stable due to the arrangement.

In some embodiments, the fixed platform comprises a plurality of support mechanisms arranged at intervals, and the support mechanisms and the chain type transportation assemblies are alternately arranged in the first direction. The top end of the supporting mechanism is provided with a plurality of rolling parts. The support stability has been guaranteed in the setting of supporting mechanism. The arrangement of the rolling parts enables goods to be better pushed to be centered, reduces friction force and improves centering and folding efficiency. The rolling piece can adopt the bull's eye, and the bull's eye evenly sets up the supporting mechanism top.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above 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.

While embodiments of the present invention have been illustrated and described above, it is not intended that they be construed as limiting the claims. The present invention is not limited to the above embodiments, and the specific structure thereof allows for variations, and all variations made within the scope of the independent claims of the present invention are within the scope of the present invention.

Claims

1. A protective device, comprising:

the adjustable protection mechanism comprises first protection parts which are oppositely arranged along a first direction, and protection limiting spaces at least formed in the first direction are formed between the first protection parts which are oppositely arranged;

2. The protection device according to claim 1, further comprising an auxiliary protection mechanism, wherein the auxiliary protection mechanism is in the first protection position, the auxiliary protection mechanism forms a double-sided protection restriction space in the second direction, the auxiliary protection mechanism is in the second protection position, and the auxiliary protection mechanism forms a single-sided protection restriction space in the second direction; the second direction is perpendicular to the first direction.

3. The protection device according to claim 2, wherein the auxiliary protection mechanism comprises at least one second protection member set oppositely along the second direction, the second protection member comprises a protection stopper, and the protection stoppers on at least the same side are connected with a lifting assembly; the lifting assembly drives the protection stopper to descend to a first position, the auxiliary protection mechanism forms a single-side protection limiting space in a second direction, the lifting assembly drives the protection stopper to ascend to a second position, the auxiliary protection mechanism forms a double-side protection limiting space in the second direction, and the second position is higher than the first position.

4. A guard means according to claim 1, wherein the transmission assembly includes a guard triggering member, a guard action member and an extension member; the protection trigger component is rotatably connected with the power source, one end of the protection action component is rotatably connected with the protection trigger component, one end of the extension component is rotatably connected with the protection action component, and the other end of the extension component extends upwards and is fixed with the protection component I; the protection trigger component is provided with a third connecting point connected with the power source, a fourth connecting point and a fifth connecting point connected with the protection action component, and the fourth connecting point and the fifth connecting point are arranged in axial symmetry relative to the third connecting point.

5. The shielding apparatus as claimed in claim 1, wherein said shielding member is connected with a first guiding member, said first guiding member being vertically disposed below said shielding member; the first guide piece comprises a guide sliding block and a guide sliding rail, and the guide sliding block is sleeved on the guide sliding rail and slides along the first direction.

6. A guard according to claim 1 or 5 wherein a second guide member is attached to the first guard member, the second guide member comprising the first guide portion and/or the second guide portion;

7. A protective device according to claim 1, wherein a position-limiting assembly is connected to the protective member, the position-limiting assembly comprises a position-limiting trigger, a narrowing limiting member and an enlarging limiting member, the narrowing limiting member is located at the narrowing limiting position of the protective limiting space, the enlarging limiting member is located at the enlarging limiting position of the protective limiting space, and the narrowing limiting member and the enlarging limiting member are both arranged on the moving path of the position-limiting trigger; or, the limiting assembly comprises a central limiting part, the central limiting part is located at a position between the reduction limit position of the protection limiting space and the expansion limit position of the protection limiting space, and the central limiting part is arranged on a moving path of the limiting trigger.

8. A movable platform, comprising:

the device comprises a chassis and a working platform arranged above the chassis, wherein the working platform comprises a lifting platform and a fixed platform; the lifting platform is provided with a protection device according to any one of claims 1 to 7;

the lifting platform is provided with a driving and conveying mechanism;

9. The movable platform of claim 8, wherein the driven transport mechanism comprises a transport power source and at least one chain transport assembly driven by the transport power source, the chain transport assemblies being spaced apart in a first direction.

10. The movable platform of claim 9, wherein the fixed platform comprises a plurality of spaced apart support mechanisms alternating with the chain transport assembly in the first direction; and a plurality of rolling parts are arranged at the top ends of the supporting mechanisms.