CN111847007A - Relay type loading and packing device - Google Patents

Abstract

The invention relates to the technical field of loading equipment, and provides a relay type loading and packing device, which comprises a transverse support plate; the transverse moving support plate is also provided with a rotating body; the rotor is movably sleeved with a liftable relay ladder; the rotor rotates through the gyration subassembly and sets up on the sideslip backup pad. Therefore, the lifting and rotatable relay ladder is arranged on the transverse moving support plate; a plurality of layer package components are arranged on a frame body of the relay ladder, and a time sequence opening and closing mechanism is adopted to control the opening and closing state and the opening and closing rhythm of the supporting plates of each layer package component. The falling of the material bag with controllable speed layer by layer is realized, and the material bag is ensured to safely reach the destination while falling rapidly; on the premise of ensuring safety, the efficiency of loading is improved.

Description

Relay type loading and packing device

Technical Field

The invention belongs to the technical field of loading equipment, and particularly relates to a relay type loading and bag placing device.

Background

Along with the rise of labor cost, the intelligent loading equipment is more and more widely applied.

The patent with application number 201910408567.5 discloses a truss-like car loading device, which grabs a cargo package through a manipulator and then accurately places the cargo package on a predetermined position of a car hopper through X (horizontal), Y (vertical) and Z (vertical) three-way positioning.

However, the manipulator of the equipment can only grab one pack of goods at a time, and then grab the next pack after the goods are placed. The interval time for placing two packages of goods is longer, so that the whole loading time is longer, and the loading efficiency is lower.

In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.

Disclosure of Invention

Aiming at the defects, the invention aims to provide a relay type loading and bag placing device, which is characterized in that a liftable and rotatable relay ladder is arranged on a transverse support plate; a plurality of layer package components are arranged on a frame body of the relay ladder, and a time sequence opening and closing mechanism is adopted to control the opening and closing state and the opening and closing rhythm of the supporting plates of each layer package component. The falling of the material bag with controllable speed layer by layer is realized, and the material bag is ensured to safely reach the destination while falling rapidly; on the premise of ensuring safety, the efficiency of loading is improved.

In order to achieve the purpose, the invention provides a relay type loading and packing device, which comprises a transverse moving support plate; the transverse moving support plate is also provided with a rotating body; the rotor is movably sleeved with a liftable relay ladder; the rotating body is rotatably arranged on the transverse moving support plate through a rotating assembly;

the relay ladder comprises a frame body which is vertically arranged, and a plurality of layer packing components are arranged on the frame body;

the bag receiving assembly comprises two supporting plates which can be mutually opened or closed; when the two supporting plates are in a closed state, the two supporting plates are used for receiving the material bags; when the two supporting plates are in an open state, the material bag falls down;

each bag receiving assembly is in transmission connection with the same time sequence opening and closing mechanism; the time sequence opening and closing mechanism controls the two supporting plates of each layer of bag receiving assembly to be switched to be in an open or closed state;

at any moment, the opening and closing states of the supporting plates of the bag receiving assemblies of the two adjacent layers are opposite; from top to bottom, the two supporting plates of each layer of bag receiving assembly sequentially move to an open or closed state, so that the material bags fall layer by layer;

the time of the material bag in free falling between two adjacent layers is slightly longer than the switching time of the opening and closing states of the two supporting plates.

According to the relay type loading and bag-releasing device, the bottom of the frame body is connected with the steel wire rope, and the rotating body is provided with the lifting motor for driving the steel wire rope to be wound or unwound.

According to the relay type loading and bag-releasing device, the two steel wire ropes are respectively arranged at two top points of the bottom of the frame body, which are positioned on the same diagonal line; the two lifting motors respectively drive the two steel wire ropes to be synchronously wound or unwound.

According to the relay type loading and bag placing device, the rotary component comprises at least three rotating wheels annularly arranged on the periphery of a rotating body; the rotating body is provided with a flanging structure, and the rotating wheel is provided with a clamping groove for clamping the flanging structure; the rotating wheel is fixed on the second supporting plate; the second supporting plate is provided with a driving wheel; the rotating body is connected with the driving wheel in a transmission way.

According to the relay type loading and bag placing device, the rotating body is in transmission connection with the driving wheel through the pulling belt; the pulling belt is fixed on the rotating wheel, and one or two fixing points are arranged between the pulling belt and the rotating wheel.

According to the relay type loading and bag placing device, the rotary assembly further comprises a tension wheel for pressing and connecting the traction belt; the two tension wheels are symmetrically distributed on two sides of a connecting line of the center point of the rotating body and the center point of the driving wheel.

According to the relay type loading and bag placing device, the distance between two adjacent layers of bag receiving assemblies is not more than 50 cm.

According to the relay type loading and bag-placing device, the time sequence opening and closing mechanism comprises a connecting rod, and a plurality of track cylinders are connected to the connecting rod in series; each track cylinder is connected with a driving plate; each driving plate correspondingly drives each layer of supporting plate to open and close; two adjacent track cylinders have a preset phase difference;

the track drum is provided with a closed track groove, and the driving plate is correspondingly provided with a convex part which is used for being in sliding fit with the track groove; and the track groove drives the driving plate to do periodic reciprocating motion in the vertical direction along with the rotation of the track cylinder.

According to the relay type loading and bag-releasing device, the phase difference between two adjacent track cylinders is 60 degrees, 90 degrees or 120 degrees.

According to the relay type loading and bag-releasing device, two supporting plates of each layer of bag receiving assembly are respectively connected with a rotating arm; and two ends of the driving plate are respectively in sliding connection with the corresponding rotating arms.

The invention aims to provide a relay type loading and bag placing device, wherein a liftable and rotatable relay ladder is arranged on a transverse support plate; a plurality of layer package components are arranged on a frame body of the relay ladder, and a time sequence opening and closing mechanism is adopted to control the opening and closing state and the opening and closing rhythm of the supporting plates of each layer package component. The falling of the material bag with controllable speed layer by layer is realized, and the material bag is ensured to safely reach the destination while falling rapidly; on the premise of ensuring safety, the efficiency of loading is improved

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a portion of the region of FIG. 1;

FIG. 3 is a schematic structural view of a portion of the region of FIG. 2;

FIG. 4 is a schematic structural view of a portion of the region of FIG. 3;

FIG. 5 is a schematic structural view of a portion of the region of FIG. 4;

FIG. 6 is a schematic plan-view development of a portion of the structure of FIG. 5;

FIG. 7 is a schematic diagram of the operation of an embodiment of the present invention;

FIG. 8 is a schematic diagram of the operation of an embodiment of the present invention;

FIG. 9 is a schematic structural view of a portion of the region of FIG. 1;

FIG. 10 is a schematic diagram of the structure of one embodiment of a portion of the area of FIG. 9;

FIG. 11 is a schematic diagram of the structure of one embodiment of a portion of the area of FIG. 9;

FIG. 12 is a schematic structural view of the region A in FIG. 11;

in the figure: 1-frame, 2-pallet, 21-rotating arm; 3-connecting rod, 31-driving plate, 32-guiding slide rail; 4-track cylinder, 41-closed section, 42-transition section and 43-open section; 5-a rotor, 51-a runner, 511-a clamping groove; 52-driving wheel, 53-pulling belt, 54-tension wheel and 55-frame sleeve; 10-a bag receiving assembly, 20-a transverse moving support plate, 30-a transverse moving rail, 40-a transverse moving motor, 50-a rack, 60-a rotary motor, 70-a lifting motor and 80-a rotary support.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, it being understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Referring to fig. 1 and 9, the present invention provides a relay type car loading and bag placing device, which comprises a traverse support plate 20 slidably disposed on a traverse rail 30; the transverse moving support plate 20 is also provided with a rotating body 5; the rotor 5 is movably sleeved with a lifting relay ladder; the rotating body 5 is rotatably disposed on the traverse support plate 20 by a rotation assembly.

The transverse moving motor is fixedly arranged on the transverse moving support plate 20 and is connected with a gear, and the gear is in transmission connection with the rack 50 to realize the movement of the transverse moving support plate 20 along the transverse moving rail 30.

The relay ladder is provided with a frame body 1; referring to fig. 10, a frame body sleeve 55 is disposed on the rotating body 5, and the frame body sleeve 55 is movably sleeved on the frame body 1; the bottom of the frame body 1 is connected with a steel wire rope, and the rotor 5 is provided with a lifting motor 70 for driving the steel wire rope to roll up or release;

the number of the steel wire ropes can be four, and the four steel wire ropes are respectively arranged at four top points at the bottom of the frame body 1;

the number of the steel wire ropes can be two, and the two steel wire ropes are respectively arranged at two top points of the bottom of the frame body 1, which are positioned on the same diagonal line; furthermore, there are two lifting motors 70, which respectively drive the two steel cables to be synchronously wound up or unwound.

Determining a bag placing position by controlling the movement of the traverse supporting plate 20; the placing posture of the material bag is adjusted by controlling the rotating angle of the rotating body 5; the height of the lowermost end of the frame 1 is controlled by the lift motor 70 to be at an appropriate bag-placing height.

As an embodiment, the slewing assembly is a slewing bearing; the traverse support plate 20 is provided with a rotary motor 60, and the rotary motor 60 is connected with the drive wheel 52 to control the rotation angle of the rotating body 5. The embodiment is suitable for the relay ladder with larger specification.

Referring to fig. 11, as an embodiment, the rotating assembly includes at least three rotating wheels 51 annularly disposed on the periphery of the rotating body 5; referring to fig. 2, the rotating body 5 has a flanging structure, and the rotating wheel 51 is provided with a clamping groove 511 for clamping the flanging structure; the runner 51 is fixed on the second support plate 20; the second support plate 20 is provided with a drive wheel 52; the rotor 5 is in driving connection with the driving wheel 52.

The flanging structure of the rotating body 5 is tightly attached in the clamping groove 511; the catching grooves 511 of the runner 51 receive the axial load of the rotor 5 while rotating in cooperation with the rotor 5. Those skilled in the art can set the number of the runners 51 adaptively according to the magnitude of the load and the size of the specification of the rotor 5; the number of the present invention is 4 to 12, preferably 4, 6, 8 or 10.

Preferably, the rotating body 5 is in transmission connection with the driving wheel 52 by adopting a pulling belt 53; the driving wheel 52 is controlled to effect rotation or adjustment of the rotation angle of the rotating body 5.

The pulling belt 53 of the present invention is preferably a timing belt or a wire rope. The pulling belt 53 and the driving wheel 52 are adopted to replace a gear ring and gear structure, so that the invention has a rotating function and the whole weight is further reduced.

Preferably, the pulling belt 53 is fixed to the wheel 51 with a predetermined number of fixing points therebetween.

As an example, the fixed point is one; the driving wheel 52 drives the pulling belt 53 to pull the rotating body 5 to rotate through the fixed point. When the fixed point rotates to the point where the pulling belt 53 is coincident with the tangent point of the rotating body 5, the rotation of the rotating body 5 in the direction reaches the limit; likewise, reverse rotation may reach a limit in the other direction; the rotor 5 can be rotated between two extreme positions to any desired angle.

Preferably, the invention is also provided with a tension wheel 54 which is pressed and connected with the pulling belt 53; increasing the stability of the drive wheel 52.

Furthermore, two tension wheels 54 are symmetrically distributed on two sides of the connecting line of the central points of the rotating body 5 and the driving wheel 52; the opening between the two tension wheels 54 defines the range of the rotation adjustment angle of the rotor 5. By changing the position of the two tensioning wheels 54, the angular adjustment range of the rotor 5 can be changed.

As an example, the fixed points are two; the two fixing points define the range of the rotational adjustment angle of the rotor 5.

The rotating assembly of the invention adopts the rotating body 5 matched with the rotating wheel 51 to replace a slewing bearing, thereby obviously reducing the weight of the rotating assembly.

Referring to fig. 2, the relay ladder of the present invention comprises a frame body 1, wherein the frame body 1 is provided with a plurality of layers of bag receiving assemblies 10;

referring to fig. 3, the bag receiving assembly 10 includes two supporting plates 2 which can be opened or closed with respect to each other; the two supporting plates 2 can receive the material bag when being closed; when the two supporting plates 2 are opened, the material bag falls to the next layer.

At any moment, the supporting plates 2 of the bag receiving assemblies 10 of two adjacent layers are in different opening and closing states, and from top to bottom, the supporting plates 2 of the bag receiving assemblies 10 of each layer are in an opening or closing state in sequence; thereby transferring the material bag from the uppermost layer to the lowermost layer in a relay manner; and eventually falls from the lowermost bag receiving assembly 10 into the freight compartment.

The number of layers of the bag receiving assembly 10 can be set according to the needs, and the invention is preferably provided with at least 8 layers, such as 10 layers or 12 layers. Every preset time interval, the supporting plate 2 of each layer of bag receiving assembly 10 is changed into an opening and closing state, so that the material bags fall from the upper layer to the lower layer. The opening and closing states of the supporting plates 2 of the bag receiving assemblies 10 which are separated by 1 layer or 2 layers are the same, so that a plurality of material bags can exist at the same time, namely, when one bag is put down on a carriage, 2-3 material bags are arranged on the relay ladder to stand by, and the loading efficiency of the material bags is greatly improved.

As an example, the time interval is 0.2 seconds, and the distance between two adjacent layers of the bag connecting assemblies 10 is 25 cm; that is, the opening and closing state of the pallet 2 of each layer is changed every 0.2 second. The material bag stays on a certain layer, and when the supporting plate 2 of the layer is opened, the material bag falls down; after 0.2s the pallet 2 of the next layer becomes closed and the time for the free fall of the pack of material for 25cm is slightly longer than 0.2s, so that the pallet 2 of the layer has already become closed when the pack falls to the next layer, ensuring that the pack of material is received. And repeating the process to finish the relay falling of the material bag.

As an example, the time interval is 0.3 seconds, and the distance between two adjacent layer bag connecting assemblies 10 is 45-50 cm; that is, the opening and closing state of the pallet 2 of each layer is changed every 0.3 second. The material bag stays on a certain layer, and when the supporting plate 2 of the layer is opened, the material bag falls down; after 0.3s the pallet 2 of the next layer becomes closed, and the free fall time of the material bag is 45-50cm, which is slightly more than 0.3s, so that the pallet 2 of the next layer becomes closed when the material bag falls to the next layer, and the material bag can be surely received. And repeating the process to finish the relay falling of the material bag.

The distance between two adjacent layers of bag receiving assemblies 10 can be set adaptively by those skilled in the art according to the length of the preset interval time, and in order to avoid breaking the material bag, the distance is preferably not more than 50cm, such as 25cm, 30cm, 40cm or 45 cm.

According to the previous embodiment, one material takes up 10 or 12 layers of the packaging assembly 10, for a maximum of no more than 4 seconds; considering that 2-3 bags of material bags are always ready on the relay ladder, the time for loading one bag of material bag in the carriage is not more than 3 seconds, the rhythm of loading is accelerated, and the loading efficiency is increased.

Referring to fig. 2, the bag receiving assemblies 10 of each layer are in transmission connection with the same time sequence opening and closing mechanism; with reference to fig. 4, the time sequence opening and closing mechanism includes a connecting rod 3, and a plurality of track cylinders 4 are connected in series on the connecting rod 3; each track cylinder 4 is connected with a driving plate 31; each driving plate 31 correspondingly drives each layer of supporting plate 2 to open and close;

referring to fig. 5, a closed track groove is formed on the track drum 4, and a boss which is slidably fitted with the track groove is correspondingly formed on the driving plate 31. The track groove drives the driving plate 31 to do periodic reciprocating motion in the vertical direction along with the rotation of the track drum 4. Preferably, the boss is provided at a central position of the drive plate 31.

Further, each drive plate 31 is connected in series to a guide slide rail 32 arranged in parallel to the connecting rod 3; ensuring that the drive plate 31 makes a periodic reciprocating movement in the vertical direction.

The two supporting plates 2 of the bag receiving assembly 10 on each layer are respectively connected with a rotating arm 21; two ends of the driving plate 31 are respectively connected with the corresponding rotating arms 21 in a sliding manner.

Referring to fig. 6 again, the track groove includes a closed section 41 and an open section 43, and the closed section 41 and the open section 43 are connected by a transition section 42; the closed section 41 and the open section 43 are both horizontally arranged, and when the lug boss operates in the section changing process, the two supporting plates 2 are kept in an open or closed state.

When the convex part of the driving plate 31 runs on the closing section 41, the two supporting plates 2 of the layer keep a closing state;

when the projection of the drive plate 31 runs in the opening section 43, the two pallets 2 of the layer remain open;

when the convex portion of the driving plate 31 runs in the transition section 42, the two supporting plates 2 of the layer are gradually opened from the closed state or gradually closed from the opened state;

the first embodiment is as follows:

the lengths of the closing section 41 and the opening section 43, etc.; and the lengths of the closed section 41 and the transition section 42 are equal, that is, the length of the closed section 41 is 1/4 of the whole track groove period; the phase difference between two adjacent track cylinders 4 is 90 degrees;

referring to FIG. 7, the starting point (t) is at the beginning of the closed segment 41₀) And the layer is taken as the first layer to describe the working principle of the invention.

t₀Time:

a first layer: the convex part of the driving plate 31 runs at the starting point of the closing section 41, and the two pallets 2 of the layer are in a closed state; placing a material bag on the layer;

a second layer: the lobe of the driving plate 31 runs at the end of the opening section 43, the two pallets 2 of this layer being in the open condition;

and a third layer: the boss of the drive plate 31 runs at the end of the transition 42, the two pallets 2 of this layer having been fully opened;

a fourth layer: the lobe of the driving plate 31 runs at the end of the closing section 41, the two pallets 2 of this layer coming from the closed condition;

track cylinder 4 is composed of t₀Time of day is rotated to t₁Time:

the lobes of the first layer run in the closing section 41, the two pallets 2 of this layer remaining closed; the material package is held in the layer;

the lobes of the second layer run in the transition section 42, the two pallets 2 of this layer being progressively closed;

the lobes of the third layer run in the opening section 43, the two pallets 2 of this layer remaining open;

the lobe of the fourth layer runs in the transition section 42, the two pallets 2 of this layer are progressively opened;

track cylinder 4 is composed of t₁Time of day is rotated to t₂Time:

the lobes of the first layer run in the transition section 42, the two pallets 2 of this layer being progressively opened; the material bag falls down;

the lobes of the second layer run in the closing section 41, the two pallets 2 of this layer remaining closed; receiving the material bag;

the bulge of the third layer runs in the transition section 42, and the two pallets 2 of the layer are gradually closed;

the projection of the fourth layer runs in the opening section 43, the two pallets 2 of this layer remaining open;

then the track cylinder 4 rotates to continue rotating for a preset time, such as 0.2 or 0.3 second; the supporting plates 2 of each layer are opened and closed according to the action, so that the material bags fall layer by layer.

One end of the connecting rod 3 is in transmission connection with a motor, and the rotating interval duration of the track cylinder 4 is controlled by controlling the rotating speed of the motor, so that the opening and closing rhythm of each layer of supporting plate 2 is controlled; the falling speed of the material bag can be controlled by matching with a proper layer interval (distance between two adjacent bag receiving assemblies 10), such as 0.1 second/layer, 0.2 second/layer, 0.3 second/layer or 0.4 second/layer.

This embodiment is two-layer at interval connects layer board 2 of package subassembly 10 to open and shut the state the same, consequently every four layers can increase one and wait the package for the rhythm of falling the package, and then improve the packing quantity of every hour, accelerate the process of loading.

In order to avoid that a pallet 2 of a certain layer runs into the closing process too early and thus clamps a material bag of the next layer; preferably, the length of the closing section 41 of the present invention is not greater than the length of the opening section 43.

Example two:

the length of the closed section 41 is 60% of the length of the open section 43; the length of the closed section 41 is 1/4 of the whole track groove period; the phase difference between two adjacent track cylinders 4 is 90 degrees;

referring to FIG. 8, the layers are at t₀To t₂The state change at the moment can be analyzed in the manner described above, and is not described herein again.

Because the length of the opening section 43 is obviously greater than that of the closing section 41, in the process that the material bag of the next layer falls from beginning to completely fall, the two supporting plates 2 of the previous layer keep a completely opened state and cannot touch the material bag (t)₀To t₁The state of the third layer and the fourth layer at that time).

Example three:

the length of the closed section 41 is less than the length of the open section 43; and the length of the closed section 41 is 1/3 of the whole track groove period; the phase difference between two adjacent track cylinders 4 is 120 degrees; the state of each layer can be analyzed in the manner described above.

The opening and closing states of the supporting plates 2 of the bag receiving assemblies 10 at intervals of one layer are the same, so that a waiting bag can be added to every three layers, the falling speed of the bag is accelerated, the packaging quantity per hour is further improved, and the loading process is accelerated.

The phase difference of two adjacent track cylinders 4 can be set adaptively according to the rotating speed of the connecting rod 3; the rotation speed is low, and the phase difference is small; the phase difference is large when the rotating speed block rotates; the phase difference of the present invention is preferably 60 °, 90 ° or 120 °.

Those skilled in the art can also set other embodiments as needed, and the description is omitted here.

In summary, the invention provides a relay type loading and bag placing device, wherein a liftable and rotatable relay ladder is arranged on a transverse support plate; a plurality of layer package components are arranged on a frame body of the relay ladder, and a time sequence opening and closing mechanism is adopted to control the opening and closing state and the opening and closing rhythm of the supporting plates of each layer package component. The falling of the material bag with controllable speed layer by layer is realized, and the material bag is ensured to safely reach the destination while falling rapidly; on the premise of ensuring safety, the efficiency of loading is improved.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. A relay type loading and bag placing device is characterized by comprising a transverse moving support plate; the transverse moving support plate is also provided with a rotating body; the rotor is movably sleeved with a liftable relay ladder; the rotating body is rotatably arranged on the transverse moving support plate through a rotating assembly;

the relay ladder comprises a frame body which is vertically arranged, and a plurality of layer packing components are arranged on the frame body;

the bag receiving assembly comprises two supporting plates which can be mutually opened or closed; when the two supporting plates are in a closed state, the two supporting plates are used for receiving the material bags; when the two supporting plates are in an open state, the material bag falls down;

each bag receiving assembly is in transmission connection with the same time sequence opening and closing mechanism; the time sequence opening and closing mechanism controls the two supporting plates of each layer of bag receiving assembly to be switched to be in an open or closed state;

at any moment, the opening and closing states of the supporting plates of the bag receiving assemblies of the two adjacent layers are opposite; from top to bottom, the two supporting plates of each layer of bag receiving assembly sequentially move to an open or closed state, so that the material bags fall layer by layer;

the time of the material bag in free falling between two adjacent layers is slightly longer than the switching time of the opening and closing states of the two supporting plates.

2. The relay type vehicle loading and bag releasing device as claimed in claim 1, wherein the bottom of the frame body is connected with a steel wire rope, and the rotating body is provided with a lifting motor for driving the steel wire rope to roll up or release.

3. The relay type loading and unloading device as claimed in claim 2, wherein the number of the steel wire ropes is two, and the two steel wire ropes are respectively arranged at two top points of the bottom of the frame body, which are located on the same diagonal line; the two lifting motors respectively drive the two steel wire ropes to be synchronously wound or unwound.

4. The relay type vehicle loading and bag placing device as claimed in claim 1, wherein the rotating assembly comprises at least three rotating wheels annularly arranged on the periphery of the rotating body; the rotating body is provided with a flanging structure, and the rotating wheel is provided with a clamping groove for clamping the flanging structure; the rotating wheel is fixed on the second supporting plate; the second supporting plate is provided with a driving wheel; the rotating body is connected with the driving wheel in a transmission way.

5. The relay type loading and bag discharging device as claimed in claim 4, wherein the rotating body is in transmission connection with the driving wheel through a pulling belt; the pulling belt is fixed on the rotating wheel, and one or two fixing points are arranged between the pulling belt and the rotating wheel.

6. The relay type loading and unloading device as claimed in claim 5, wherein the rotation assembly further comprises a tension wheel for pressing and connecting the pulling belt; the two tension wheels are symmetrically distributed on two sides of a connecting line of the center point of the rotating body and the center point of the driving wheel.

7. The relay type loading and unloading device as claimed in claim 1, wherein the distance between two adjacent layers of the receiving assemblies is not more than 50 cm.

8. A relay type loading and bag-releasing device as claimed in any one of claims 1 to 7, wherein the timing opening and closing mechanism comprises a connecting rod, and a plurality of track cylinders are connected in series on the connecting rod; each track cylinder is connected with a driving plate; each driving plate correspondingly drives each layer of supporting plate to open and close; two adjacent track cylinders have a preset phase difference;

the track drum is provided with a closed track groove, and the driving plate is correspondingly provided with a convex part which is used for being in sliding fit with the track groove; and the track groove drives the driving plate to do periodic reciprocating motion in the vertical direction along with the rotation of the track cylinder.

9. The relay type loading and bag-discharging device as claimed in claim 8, wherein the phase difference between two adjacent track cylinders is 60 °, 90 ° or 120 °.

10. The relay type loading and unloading device as claimed in claim 9, wherein two pallets of the receiving and packing assembly of each layer are respectively connected to a rotating arm; and two ends of the driving plate are respectively in sliding connection with the corresponding rotating arms.

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