阅读说明：本技术 一种高防护性仓栅式运输半挂车 (High-protection warehouse grid type transportation semitrailer ) 是由 郑磊 王涛 于 2020-05-30 设计创作，主要内容包括：本发明涉及半挂车技术领域,公开了一种高防护性仓栅式运输半挂车,包括车体和固定在车体后端部上的车厢,所述车厢的两侧壁均设有两组通孔,所述车厢靠近车体前端两侧壁均设有拉动机构,所述车厢靠近车体后端处设有延伸架,并且延伸架的一端上设有厢门,延伸架的顶部一侧壁上设有驱动机构,延伸架的两侧均设有同步机构,两个同步机构的底部之间设有传动轴,并且两个同步机构之间设置有阻挡机构,车厢的后端上设有能够与拉动机构自由端固定连接的螺纹孔,本发明能够保障车厢内的货物不会在整体移动运输过程中,出现从通孔处掉落的情况发生和防止了当人员打开厢门时,货物由于运输颠簸有可能倾斜会直接掉落砸伤人员的情况发生,安全性较高。(The invention relates to the technical field of semitrailers, and discloses a high-protection warehouse type transport semitrailer which comprises a semitrailer body and a carriage fixed on the rear end part of the semitrailer body, wherein two groups of through holes are formed in two side walls of the carriage body, pulling mechanisms are arranged on two side walls of the carriage body, which are close to the front end of the semitrailer body, an extending frame is arranged at the rear end of the carriage body, a carriage door is arranged at one end of the extending frame, a driving mechanism is arranged on one side wall of the top of the extending frame, synchronous mechanisms are arranged on two sides of the extending frame, a transmission shaft is arranged between the bottoms of the two synchronous mechanisms, a blocking mechanism is arranged between the two synchronous mechanisms, and a threaded hole capable of being fixedly connected with the free end of the pulling mechanism is formed in the rear end of the carriage body, the goods bumps because of the transportation and can incline and can directly fall to injure people, and the safety is higher.)

1. The utility model provides a high protection nature storehouse bars formula transportation semitrailer which characterized in that: comprises a vehicle body (1) and a carriage (2) fixed on the rear end part of the vehicle body (1), wherein two groups of through holes (3) are arranged on two side walls of the carriage (2), pulling mechanisms (4) are arranged on two side walls of the front end of the vehicle body (1) close to the carriage (2), an extension frame (5) fixedly connected with the carriage (2) is arranged at the rear end part of the vehicle body (1) close to the carriage (2), the extension frame (5) is of a U-shaped structure, a carriage door (6) hinged with the extension frame (5) is arranged at one end, far away from the vehicle body (1), of the extension frame (5), a driving mechanism (7) is arranged on one side wall of the top of the extension frame (5), synchronous mechanisms (8) are arranged on two sides of the extension frame (5), a transmission shaft (9) used for connecting the two synchronous mechanisms (8) is arranged between the bottoms of the two synchronous, this blocking mechanism (10) is located and extends frame (5) to the both ends and two lazytongs (8) fixed connection of blocking mechanism (10), the stiff end of every pulling mechanism (4) and the one end lateral wall fixed connection of carriage (2), be equipped with on the rear end of carriage (2) can with pulling mechanism (4) free end fixed connection's screw hole (11).

2. The high-protection bin gate type transportation semitrailer of claim 1, wherein: pulling mechanism (4) are including loading board (41) and expansion bracket (42), and loading board (41) and the one end lateral wall fixed connection of carriage (2), be equipped with on loading board (41) and be provided with an holding tank along its direction of height, the stiff end of expansion bracket (42) is pegged graft in the holding tank, and the free end of expansion bracket (42) is fixed on carriage (2) is close to its preceding tip through two bolts (43).

3. The high-protection bin gate type transportation semitrailer of claim 1, wherein: actuating mechanism (7) are including control motor (71), mounting panel (72), driving gear (73) and driven gear (74), and mounting panel (72) are vertical fixes at the top of extending frame (5), and control motor (71) are the level and fix on the lateral wall of mounting panel (72), and the output of control motor (71) run through mounting panel (72) and with driving gear (73) fixed connection, driven gear (74) install on a lazytongs (8) and with driving gear (73) transmission cooperation.

4. The high-protection bin gate type transportation semitrailer of claim 3, wherein: the synchronizing mechanism (8) comprises a rope collecting roller (81), a rope releasing roller (82), a rope (83), first synchronizing teeth (84), second synchronizing teeth (85) and a linkage shaft (86), the linkage shaft (86) is rotatably installed on one side wall of the top of the extending frame (5), two ends of the linkage shaft (86) penetrate through one side wall of the extending frame (5) respectively, the rope collecting roller (81) and the first synchronizing teeth (84) are fixed on two ends of the linkage shaft (86) respectively, the driven gear (74) is installed at one end of the linkage shaft (86), two installation grooves (21) are formed in the inner bottom wall of the rear end of the carriage (2), the rope releasing roller (82) is fixed on the transmission shaft (9) and located in one installation groove (21), two ends of the transmission shaft (9) penetrate through two sides of the carriage (2) respectively and are fixedly connected with the two second synchronizing teeth (85), the outer parts of the first synchronous tooth (84) and the second synchronous tooth (85) are sleeved with a synchronous chain (87), and two ends of a rope (83) are fixedly connected with the rope collecting roller (81) and the rope releasing roller (82) respectively.

5. The high-protection bin gate type transportation semitrailer of claim 4, wherein: stop mechanism (10) including shelves slat (101), shelves slat (101) are provided with two, and the both ends of every shelves slat (101) are connected with two rope (83) sliding connection respectively, and one of every shelves slat (101) is served and all is equipped with two lock sleeves (102) of shelves slat (101) fixed mounting on rope (83), the both ends of every shelves slat (101) respectively with extend two inner wall sliding fit of frame (5).

6. The high-protection bin gate type transportation semitrailer of claim 1, wherein: one end of the compartment door (6) is hinged to one side of the rear end of the compartment (2), a pin ring (12) fixedly connected with the other end of the compartment door (6) is arranged at the other end of the compartment door, a bolt (13) matched with the pin ring (12) is arranged at the rear end of the compartment (2), and two inserting ring seats (14) matched with the bolt (13) in an inserting mode are further arranged at the rear end of the compartment (2).

Technical Field

The invention relates to the technical field of semitrailers, in particular to a high-protection bin grid type transportation semitrailer.

Background

With the increasing activity of goods trade, the transportation industry is also developed and grown, and the development of bulk goods transportation and container transportation is most prominent, thereby promoting the development of trailer-related industries. Semitrailers are increasingly used as traction vehicles for carrying cargo, which have a high load capacity.

A semitrailer is a trailer whose axle is placed behind the center of gravity of the vehicle and which is equipped with a coupling device that can transmit horizontal and vertical forces to the tractor. Semitrailers are generally three-axle semitrailers, and the types of semitrailers are divided into eleven-meter-bin-column semitrailers, thirteen-meter-bin semitrailers, low-bed semitrailers and the like. Is a heavy transport vehicle connected with a semitrailer head through a towing pin. The transportation of storehouse bars formula semitrailer mainly used agricultural and sideline products and other light bulb goods, in order to ensure the ventilation of transported substance article, and reduce railway carriage weight, increase the transport capacity, longeron and the space frame structure that whole through-type crossbeam design assembly welding formed, the carriage adopts the fence structural design, can equalize the intensity of frame, rigidity, toughness, can guarantee bearing capacity strong again, permanent deformation does not take place, and simple structure is suitable for, it is convenient to dismantle, for the user reduces investment cost, create more profit values, and the motorcycle type and the fence structure of storehouse bars semitrailer satisfy fully alleviate carriage weight under the load condition, simple structure is suitable for, it is convenient to dismantle, the frame adopts the longeron and the space frame structure that whole through-type crossbeam assembly welding formed. The intensity that can balanced frame, rigidity, toughness, bearing capacity is strong, permanent deformation does not take place, current in order to guarantee the ventilation of transportation article and reduce railway carriage weight, all design the fixed ventilation bleeder vent of a plurality of sizes on the carriage, present storehouse bars formula transportation semitrailer is when the loading thing, because the goods size specification differs, storehouse bars formula transportation semitrailer is in the jolting of way, the goods can probably drop from a plurality of ventilation bleeder vents, cause the traffic accident and injure passerby's incident emergence by a crashing object, and the goods still can take place the slope owing to jolting in the transit, open the railway carriage door after, the goods is probably directly dropped, thereby injure the personnel by a crashing object, there is the potential safety hazard, for this reason, we have proposed a high protection nature storehouse bars formula transportation semitrailer and have solved above-mentioned problem.

Disclosure of Invention

The invention aims to provide a high-protection warehouse grid type transport semitrailer, which aims to solve the technical problems that in the prior art, goods can fall off from ventilation holes in the transport process, traffic accidents and accidents of road people injury are caused, and the goods can directly fall off due to the opening of a compartment door, so that personnel are injured by injury, and potential safety hazards exist.

In order to solve the technical problems, the invention provides the following technical scheme: a high-protection warehouse grid type transportation semitrailer comprises a semitrailer body and a carriage fixed on the rear end part of the semitrailer body, wherein two groups of through holes are formed in two side walls of the carriage, pulling mechanisms are arranged on two side walls of the carriage, which are close to the front end of the semitrailer body, an extension frame fixedly connected with the carriage is arranged at the position, which is close to the rear end of the semitrailer body, the extension frame is of a U-shaped structure, a carriage door hinged with the extension frame is arranged at one end, which is far away from the semitrailer body, of the extension frame, a driving mechanism is arranged on one side wall of the top of the extension frame, synchronizing mechanisms are arranged on two sides of the extension frame, a transmission shaft used for connecting the two synchronizing mechanisms is arranged between the bottoms of the two synchronizing mechanisms, a blocking mechanism is arranged between the two synchronizing mechanisms, the blocking mechanism is positioned in the extension, the rear end of the carriage is provided with a threaded hole which can be fixedly connected with the free end of the pulling mechanism.

Preferably, the pulling mechanism comprises a bearing plate and an expansion bracket, the bearing plate is fixedly connected with one end side wall of the carriage, a containing groove is formed in the bearing plate along the height direction of the bearing plate, the fixed end of the expansion bracket is inserted into the containing groove, and the free end of the expansion bracket is fixed to the carriage close to the front end of the carriage through two bolts.

Preferably, actuating mechanism includes control motor, mounting panel, driving gear and driven gear, and the mounting panel is vertical fixes the top at the extension frame, and control motor is the level and fixes on the lateral wall of mounting panel to control motor's output run through the mounting panel and with driving gear fixed connection, driven gear install on a lazytongs and with driving gear transmission cooperation.

Preferably, the synchronizing mechanism includes receiving the rope roller, puts rope roller, rope, first synchronous tooth, the synchronous tooth of second and universal driving shaft, and the universal driving shaft rotates and installs on a top lateral wall of extension frame to the both ends of universal driving shaft run through a lateral wall setting of extension frame respectively, receive the rope roller and fix respectively on the both ends of universal driving shaft with first synchronous tooth, driven gear installs one of universal driving shaft and serves, be equipped with two mounting grooves on the rear end inner diapire of carriage, put the rope roller and fix on the transmission shaft and lie in a mounting groove, the both ends of transmission shaft run through the both sides of carriage respectively and with the synchronous tooth fixed connection of two seconds, the cover is equipped with synchronous chain on the outside of first synchronous tooth and the synchronous tooth of second, the both ends of rope respectively with receive the rope roller and put rope roller fixed connection.

Preferably, stop mechanism includes shelves slat, the shelves slat is provided with two, and the both ends of every shelves slat are connected with two rope sliding connection respectively, and one of every shelves slat is served and all is equipped with two lock sleeves with shelves slat fixed mounting on the rope, the both ends of every shelves slat respectively with extend two inner wall sliding fit of frame.

Preferably, one end of the compartment door is hinged to one side of the rear end of the compartment, the other end of the compartment door is provided with a pin ring fixedly connected with the compartment door, the rear end of the compartment is provided with a bolt matched with the pin ring, and the rear end of the compartment is further provided with two inserting ring seats matched with the bolt in an inserting manner.

Compared with the prior art, the invention has the beneficial effects that:

(1) when goods with smaller specifications are transported, the two bolts on the free ends of the expansion frames arranged on the two sides of the carriage are screwed off, the free ends of the expansion frames are pulled to extend from the front end to the rear end of the carriage, when the free ends of the expansion frames are pulled to two threaded holes on the rear end of the carriage, the expansion frames are fixed by respectively installing the two bolts corresponding to the two threaded holes, the danger that the expansion frames drop when the whole body moves is prevented, the expansion frames are opened by utilizing the extension of the expansion frames, the size of two groups of through holes on the two sides of the carriage is blocked and isolated, the size of the through holes on the carriage is reduced, the goods in the carriage can not fall from the through holes in the whole moving transportation process, and the safety of goods transportation is improved; when large-size goods are transported, the free end of the expansion bracket is pulled to retract to the position, close to the front end of the carriage, the expansion bracket is positioned and fixed through the two bolts, and therefore the practicability is high;

(2) when goods are orderly stacked in the carriage, the driving gear fixedly connected with the output end of the driving gear is driven to rotate by controlling the motor to drive the driven gear in transmission fit with the driving gear to rotate, so that the linkage shaft fixedly connected with the driven gear and the rope receiving roller arranged at one end of the linkage shaft rotate, the first synchronizing gear is fixed on the linkage shaft, the transmission shaft fixedly connected with the second synchronizing gear is driven to rotate under the action of the synchronizing chain to drive the two rope placing rollers on the transmission shaft to rotate synchronously, meanwhile, the other synchronizing mechanism rotates synchronously to realize that the ropes fixedly connected with the rope receiving roller and the rope placing rollers move downwards in the vertical direction, thereby enabling the two ends of the ropes to respectively move downwards synchronously with the baffle plates fixedly connected with the two ropes, and preventing the goods from directly falling and injuring the personnel due to transportation bump when the personnel open the carriage door, thereby further improving the overall safety;

(3) drive two lazytongs through the control motor drive and rotate simultaneously, realize the rotation control to receiving the rope roller and putting the rope roller, the rope that the pulling was moved up in vertical direction with receiving rope roller and putting rope roller fixed connection, and both ends shift up in step with two rope fixed connection's shelves strip respectively to can not block the upper and lower transport step of goods, improved whole practicality.

Drawings

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a schematic perspective view of the present invention;

FIG. 5 is a side view of FIG. 4;

FIG. 6 is a cross-sectional view of FIG. 4;

fig. 7 is an enlarged view of a portion a in fig. 6.

The reference numbers in the figures are:

the automatic rope winding and unwinding device comprises a vehicle body 1, a compartment 2, a mounting groove 21, a through hole 3, a pulling mechanism 4, a bearing plate 41, an expansion bracket 42, a bolt 43, an extension bracket 5, a compartment door 6, a driving mechanism 7, a control motor 71, a mounting plate 72, a driving gear 73, a driven gear 74, a synchronizing mechanism 8, a rope winding roller 81, a rope unwinding roller 82, a rope 83, a first synchronizing tooth 84, a second synchronizing tooth 85, a linkage shaft 86, a synchronizing chain 87, a transmission shaft 9, a blocking mechanism 10, a baffle plate 101, a locking sleeve 102, a threaded hole 11, a pin ring 12, a pin 13 and a plug ring seat 14.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further 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 "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Referring to fig. 1 to 7, a high protective warehouse type transportation semitrailer is disclosed, which comprises a vehicle body 1 and a carriage 2 fixed on the rear end portion of the vehicle body 1, wherein two sets of through holes 3 are respectively arranged on two side walls of the carriage 2, a pulling mechanism 4 is respectively arranged on two side walls of the carriage 2, which are close to the front end of the vehicle body 1, an extension frame 5 fixedly connected with the carriage 2 is arranged at the position, which is close to the rear end of the vehicle body 1, of the carriage 2, the extension frame 5 is in a U-shaped structure, a carriage door 6 hinged with the extension frame 5 is arranged at one end, which is far away from the vehicle body 1, of the extension frame 5, a driving mechanism 7 is arranged on one side wall of the top of the extension frame 5, synchronizing mechanisms 8 are respectively arranged on two sides of the extension frame 5, a transmission shaft 9 for connecting the two synchronizing mechanisms 8 is arranged between the bottoms of the two synchronizing mechanisms 8, a blocking mechanism 10 is arranged between the, the fixed end of each pulling mechanism 4 is fixedly connected with the side wall of one end of the carriage 2, and the rear end of the carriage 2 is provided with a threaded hole 11 which can be fixedly connected with the free end of each pulling mechanism 4.

Specifically, pulling mechanism 4 includes loading board 41 and expansion bracket 42, loading board 41 and carriage 2's one end lateral wall fixed connection, it is provided with an holding tank to be equipped with on the loading board 41 along its direction of height, and the stiff end of expansion bracket 42 is pegged graft in the holding tank, and expansion bracket 42's free end is fixed on carriage 2 is close to its preceding tip through two bolts 43, through the free end pulling control to expansion bracket 42 to the realization is to carrying out regulation and control to 3 sizes of through-hole on carriage 2, prevents that the condition that the goods dropped from 3 departments of through-hole from taking place when the transportation is jolted from appearing, has improved cargo transportation's security.

Specifically, actuating mechanism 7 includes control motor 71, mounting panel 72, driving gear 73 and driven gear 74, the mounting panel 72 is vertical to be fixed at the top of extending frame 5, control motor 71 is the level and fixes on the lateral wall of mounting panel 72, and control motor 71's output run through mounting panel 72 and with driving gear 73 fixed connection, driven gear 74 is installed on a lazytongs 8 and with driving gear 73 transmission cooperation, drive driving gear 73 rather than output fixed connection through control motor 71 and rotate, drive driven gear 74 with driving gear 73 transmission complex and rotate, and then make two lazytongs 8 work, the removal of control blocking mechanism 10 in vertical direction is adjusted, thereby reach the mesh that the phenomenon appears dropping when the railway carriage or compartment door 6 is opened in the goods, improve the security.

Specifically, the synchronizing mechanism 8 comprises a rope collecting roller 81, a rope releasing roller 82, a rope 83, first synchronizing teeth 84, second synchronizing teeth 85 and a linkage shaft 86, the linkage shaft 86 is rotatably installed on one side wall of the top of the extending frame 5, two ends of the linkage shaft 86 respectively penetrate through one side wall of the extending frame 5, the rope collecting roller 81 and the first synchronizing teeth 84 are respectively fixed on two ends of the linkage shaft 86, the driven gear 74 is installed on one end of one linkage shaft 86, two installation grooves 21 are arranged on the bottom wall of the rear end of the carriage 2, the rope releasing roller 82 is fixed on the transmission shaft 9 and is positioned in one installation groove 21, two ends of the transmission shaft 9 respectively penetrate through two sides of the carriage 2 and are fixedly connected with the two second synchronizing teeth 85, a synchronizing chain 87 is sleeved outside the first synchronizing teeth 84 and the second synchronizing teeth 85, two ends of the rope 83 are respectively fixedly connected with the rope collecting roller 81 and the rope releasing roller 82, when goods are orderly stacked in the carriage 2, the driving gear 73 fixedly connected with the output end of the control motor 71 is driven to rotate by the control motor 71, the driven gear 74 in transmission fit with the driving gear 73 is driven to rotate, the linkage shaft 86 fixedly connected with the driven gear 74 and the rope collecting roller 81 arranged at one end of the linkage shaft 86 are driven to rotate, the first synchronizing gear 84 is fixed on the linkage shaft 86, the transmission shaft 9 fixedly connected with the second synchronizing gear 85 is driven to rotate under the action of the synchronizing chain 87, the two rope discharging rollers 82 on the transmission shaft 9 are driven to synchronously rotate, meanwhile, the other synchronizing mechanism 8 synchronously rotates, the rope 83 fixedly connected with the rope collecting roller 81 and the rope discharging rollers 82 moves downwards in the vertical direction, so that the baffle plates 101 fixedly connected with the two ropes 83 at two ends respectively move downwards synchronously, the situation that when a person opens the carriage door 6, the goods can directly fall down due to possible inclination in transportation, thereby further improving the overall safety; drive two lazytongs 8 through control motor 71 drive and rotate simultaneously, realize receiving rope roller 81 and putting rope roller 82's rotation control, the pulling with receive rope roller 81 and put rope roller 82 fixed connection's rope 83 and move up in vertical direction, and then make both ends respectively with two rope 83 fixed connection's shelves strip 101 shift up in step to can not block the upper and lower transport step of goods, improved whole practicality.

Specifically, blocking mechanism 10 includes shelves slat 101, shelves slat 101 is provided with two, the both ends of every shelves slat 101 respectively with two rope 83 sliding connection on, one of every shelves slat 101 is served and all is equipped with two lock sleeves 102 with shelves slat 101 fixed mounting on rope 83, the realization is to the location of shelves slat 101 on rope 83, block that the goods when the railway carriage or compartment door 6 is opened, the phenomenon of dropping appears, the both ends of every shelves slat 101 respectively with extend two inner walls sliding fit of frame 5, the realization is spacing the removal stroke of shelves slat 101 in vertical direction, prevent that it from appearing the deviation.

Specifically, one end of the compartment door 6 is hinged to one side of the rear end of the compartment 2, the other end of the compartment door 6 is provided with a pin ring 12 fixedly connected with the other end of the compartment door, the rear end of the compartment 2 is provided with a bolt 13 matched with the pin ring 12, the rear end of the compartment 2 is further provided with two inserting ring seats 14 matched with the bolt 13 in an inserting mode, the rear end of the compartment 2 is hinged to one side of the compartment door 6, the compartment door is convenient to rotate, and the opening and closing steps of the compartment door 6 are achieved under the movable inserting matching of the bolt 13, the two inserting ring seats 14 and the pin ring 12, and the structure is simple.

The working principle of the invention is as follows: when goods with smaller specifications are transported, the two bolts 43 on the free ends of the telescopic frames 42 arranged on the two sides of the carriage 2 are screwed off, the free ends of the telescopic frames 42 are pulled to extend from the front end to the rear end of the carriage 2, when the two bolts 43 are pulled to the two threaded holes 11 on the rear end of the carriage 2, the two bolts 43 are respectively installed corresponding to the two threaded holes 11, so that the telescopic frames 42 are fixed, the danger that the telescopic frames 42 fall off when the whole body moves is prevented, the size of two groups of through holes 3 on the two sides of the carriage 2 is blocked and separated by utilizing the extension of the telescopic frames 42, the size of the through holes 3 on the carriage 2 is reduced, the goods in the carriage 2 can not fall off from the through holes 3 in the whole moving and transporting process, and the safety of goods transportation is improved; when large-size goods are transported, the free end of the telescopic frame 42 is pulled to retract to the position, close to the front end of the carriage 2, of the carriage, the telescopic frame 42 is positioned and fixed through the two bolts 43, and therefore the practicability is high; when goods are orderly stacked in the carriage 2, the driving gear 73 fixedly connected with the output end of the control motor 71 is driven to rotate by the control motor 71, the driven gear 74 in transmission fit with the driving gear 73 is driven to rotate, the linkage shaft 86 fixedly connected with the driven gear 74 and the rope collecting roller 81 arranged at one end of the linkage shaft 86 are driven to rotate, the first synchronizing gear 84 is fixed on the linkage shaft 86, the transmission shaft 9 fixedly connected with the second synchronizing gear 85 is driven to rotate under the action of the synchronizing chain 87, the two rope discharging rollers 82 on the transmission shaft 9 are driven to synchronously rotate, meanwhile, the other synchronizing mechanism 8 synchronously rotates, the rope 83 fixedly connected with the rope collecting roller 81 and the rope discharging rollers 82 moves downwards in the vertical direction, so that the baffle plates 101 fixedly connected with the two ropes 83 at two ends respectively move downwards synchronously, the situation that when a person opens the carriage door 6, the goods can directly fall down due to possible inclination in transportation, thereby further improving the overall safety; drive two lazytongs 8 through control motor 71 drive and rotate simultaneously, realize receiving rope roller 81 and putting rope roller 82's rotation control, the pulling with receive rope roller 81 and put rope roller 82 fixed connection's rope 83 and move up in vertical direction, and then make both ends respectively with two rope 83 fixed connection's shelves strip 101 shift up in step to can not block the upper and lower transport step of goods, improved whole practicality.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.