Automatic feeding trolley
By designing an automatic feeding truck, using the moving mechanism and the urging mechanism to achieve automatic feeding, and reducing dust through the vacuum cleaner and sealing structure, the problems of large dust and low efficiency during feeding in the prior art are solved, and the safety and automation of the working environment are improved.
Patent Information
- Application Number
- CN202421360391.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-14
AI Technical Summary
In the prior art, dust is high when feeding, low efficiency is required, and manual operation is required, resulting in a harsh working environment and difficult recruitment.
An automatic feeding vehicle is designed, including a vehicle body, a moving mechanism, an urging mechanism and a feeding barrel. The urging mechanism drives the feeding barrel to slide through the vehicle body and enter the silo. The urging mechanism releases the limit of the feeding port of the feeding barrel, realizes automatic feeding, and is equipped with a vacuum cleaner and a sealing structure to reduce dust.
Automatic feeding is achieved, manual operation is reduced, dust is reduced, feeding efficiency and working environment safety is improved, and the problem of difficulty in recruiting workers is solved.
Smart Images

Figure CN222683433U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of warehouse logistics automation, in particular to an automatic loading vehicle. Background Art
[0002] At present, in the food and pharmaceutical storage and logistics industry (mainly Chinese herbal medicine pieces), inventory and restocking of warehouses and equipment are mostly done manually. This restocking method is not only inefficient, but also labor-intensive. In particular, the dust during restocking makes the working environment even worse, and the problem of difficulty in recruiting workers becomes more prominent.
[0003] In order to improve the efficiency of material replenishment, factories now have rail-guided vehicles (RGV trolleys). RGV trolleys can carry out material replenishment transportation along a predetermined route, such as an RGV trolley cargo docking mechanism and RGV trolley (Announcement No.: CN21940888U), which improve the ability to resist interference from the external environment during material replenishment, can automatically transport goods, and improve material replenishment efficiency.
[0004] However, this type of trolley can only transport packaged bulk materials to fixed points and cannot automatically refill the material filling port. Workers are still required to manually pour the materials into the material filling port. The pouring method has a large amplitude and will raise dust when pouring. Subsequent dust removal treatment is also required, which still cannot solve the problems of low refilling efficiency and complicated procedures. Utility Model Content
[0005] The utility model aims to provide an automatic feeding vehicle to solve the technical problem of large dust generation during material feeding in the prior art.
[0006] In order to solve the above technical problems, the utility model specifically provides the following technical solutions:
[0007] The utility model provides an automatic loading vehicle, comprising:
[0008] Car body, moving mechanism, force applying mechanism and loading barrel;
[0009] The moving mechanism is vertically arranged on the vehicle body through a mounting plate, the sliding end of the moving mechanism slides on the mounting plate, the force applying mechanism is slidably mounted on the sliding end, and the unloading port where the loading barrel is located is limited;
[0010] The moving mechanism can drive the upper barrel to slide on the vehicle body, and make the bottom of the upper barrel pass through the vehicle body and enter into the silo material port or the interior of the silo; the force-applying mechanism can release the limit at the lower material port of the upper barrel.
[0011] As a preferred solution of the utility model, it also includes a clamping mechanism, which is used to clamp the loading barrel. The clamping mechanism is arranged at the movable end of the moving mechanism. When the clamping mechanism clamps the barrel, the execution end of the force-applying mechanism is located directly above the force-bearing part.
[0012] As a preferred solution of the utility model, the vehicle body includes a bottom plate, and the bottom plate is provided with a hole for the upper barrel to pass through;
[0013] Chassis side panels are arranged on both sides of the bottom plate, and driving wheels and driven wheels are respectively installed at the front and rear of the chassis side panels, and the driving wheels are driven by a rotating servo motor, and a removable lithium battery pack is arranged on the rotating servo motor, and the removable lithium battery pack is used to supply power to the rotating servo motor, the moving mechanism, the clamping mechanism and the force applying mechanism;
[0014] The mounting plate is vertically mounted on the bottom plate, and rib plates are arranged on both sides of the mounting plate. The rib plates serve as supporting structures for mounting the moving mechanism.
[0015] As a preferred solution of the utility model, an upper cover mechanism is provided on the top of the mounting plate, and the upper cover mechanism is used to limit the top opening of the upper barrel.
[0016] As a preferred solution of the utility model, the upper cover mechanism includes a support plate installed at the end of the mounting plate, a lifting guide rail assembly is arranged between the support plate and the mounting plate, a dust collecting upper cover for dust prevention is arranged on the lifting guide rail assembly, and the lifting guide rail assembly provides driving and guiding support for the lifting of the dust collecting upper cover;
[0017] The dust suction upper cover can be cooperatively arranged at the upper opening of the feeding barrel.
[0018] As a preferred solution of the utility model, an electromagnetic lock is arranged on the top of the lifting guide rail assembly, and the dust collection cover can be locked in the highest waiting position of the lifting guide rail assembly by the electromagnetic lock.
[0019] As a preferred solution of the utility model, a dust suction device is provided on the withdrawable lithium battery pack, and the dust suction device is used to vacuum the interior of the loading barrel.
[0020] As a preferred solution of the utility model, the dust collection device includes a dust collection shell installed on the bottom plate, a dust collection pipe is connected between the dust collection shell and the dust collection upper cover, a dust collection bag is arranged in the dust collection shell, and the dust collection pipe is connected to a dust collection fan;
[0021] The vacuum suction force generated by the dust suction fan sucks the dust in the upper opening of the feeding barrel into the dust suction bag.
[0022] As a preferred solution of the utility model, a laser ranging sensor is arranged above the lifting guide rail assembly, the ranging laser on the laser ranging sensor can pass through the dust collection cover, and the laser ranging sensor is used to determine the amount of material stored in the loading barrel.
[0023] As a preferred solution of the utility model, the loading barrel comprises:
[0024] A cylinder having a feed inlet at one end and a discharge outlet at the other end;
[0025] A blocking member is disposed at the discharge port, and the blocking member can completely cover the discharge port to close the discharge port, and the blocking member can move away from the discharge port to open the discharge port;
[0026] The limiting member can act on the blocking member to limit the blocking member from deviating from the discharge port, and the limiting member can be released from its limiting effect on the blocking member.
[0027] As a preferred solution of the utility model, the blocking member is a double-leaf door composed of two door panels;
[0028] The door panel is hinged to the edge of the discharge port.
[0029] As a preferred solution of the utility model, a first torsion spring sleeved on the hinge shaft is further connected between the door panel and the discharge port, and the first torsion spring is configured to always have a torsion force that causes the door panel to rotate toward the discharge port;
[0030] Furthermore, the torsion force of the first torsion spring is large enough to enable the two door panels to return to the state of closing the discharge port without restriction.
[0031] As a preferred solution of the utility model, the door panel extends toward the outside of the cylinder to form a limit plate, one end of the limit member can abut against the limit plate to limit the opening action of the door panel, and the end of the limit member can offset the limit plate under the action of external force.
[0032] As a preferred solution of the utility model, a slot is provided on the side of the limit plate, one end of the limit member forms an insertion portion that can be inserted into the slot, and the other end is a connecting portion, the connecting portion is provided on the side of the cylinder through a rotating shaft, and the limit member can rotate around the rotating shaft;
[0033] The inserting portion of the limiting member can be disengaged from the slot as the limiting member rotates.
[0034] As a preferred solution of the utility model, the connecting portion extends toward one side of the cylinder to form a force-bearing portion, and the force-bearing portion can cause the limiting member to rotate around the rotating axis under the action of an external force from top to bottom, so that the insertion portion is disengaged from the slot.
[0035] As a preferred solution of the utility model, a second torsion spring is arranged on the rotating shaft, and the second torsion spring is arranged to always have a torsion force that causes the insertion portion of the limiting member to move toward the slot direction.
[0036] As a preferred solution of the utility model, the limiting members are provided with two groups, which act symmetrically on the gap between the two door panels respectively, and enable the inserting portion to be simultaneously inserted into the slots of the two door panels on the same side.
[0037] As a preferred solution of the utility model, an edge of one of the door panels close to the gap between the two door panels extends outward to form a stop bar, and the stop bar can cover the gap between the two door panels.
[0038] As a preferred solution of the utility model, the clamping mechanism and the force-applying mechanism are both arranged at the movable end of the moving mechanism;
[0039] The position setting of the force-applying mechanism is as follows: when the clamping mechanism clamps the cylinder, the execution end of the force-applying mechanism is located directly above the force-bearing portion.
[0040] As a preferred solution of the utility model, the moving mechanism includes a first screw pair, a first motor and a mounting seat;
[0041] The first screw pair is vertically arranged, the first motor is used to drive the screw of the first screw pair to rotate, and the mounting seat is vertically arranged on the nut slider of the first screw pair;
[0042] The mounting seat is used to set the clamping mechanism and the force applying mechanism.
[0043] As a preferred solution of the utility model, the clamping mechanism includes a second screw pair, a second motor and two sets of clamping claws;
[0044] The second screw pair and the second motor are arranged on a mounting seat, and the second motor is used to drive the screw of the second screw pair to rotate; wherein, the second screw pair is arranged horizontally, the screw of the second screw pair is a bidirectional screw, and nut sliders are provided at both ends of the screw; the two groups of jaws are symmetrically arranged on the nut sliders of the second screw pair.
[0045] As a preferred solution of the utility model, the projection shape of the clamping jaws is an L-shaped structure, and the two groups of the clamping jaws are arranged horizontally;
[0046] The short side of the clamping jaw is used to connect with the nut slider of the second screw pair; the long sides of the two groups of the clamping jaws are respectively provided with positioning blocks on the facing sides; the distance between the positioning blocks and the short side of the clamping jaw is consistent with the width of the side of the corresponding position of the cylinder;
[0047] And in the state of clamping the cylinder, the short side of the clamp, the long side of the clamp and the positioning block are in contact with the side wall of the cylinder; it is used to limit the cylinder so that the position of the cylinder is relatively fixed during the movement; so that the movable end of the force-applying member can apply the external force to the force-bearing part.
[0048] As a preferred solution of the utility model, the surface of the positioning block facing the short side of the clamp is an inclined surface; wherein the distance between one end of the inclined surface close to the end face of the positioning block and the short side of the clamp is greater than the distance between the other end of the inclined surface and the short side of the clamp.
[0049] As a preferred solution of the utility model, the side walls of the cylinder are respectively provided with grooves matching the clamping jaws on both sides of the clamping jaws, and the grooves are used to fix the clamping jaws to limit the displacement of the clamping jaws in the vertical direction.
[0050] As a preferred solution of the utility model, at least one set of guide posts are respectively provided vertically downward at the bottom of the two sets of clamping jaws, and a stopper is provided at the bottom of the guide post;
[0051] The movable end of the force applying mechanism reciprocates in the vertical direction along the guide column.
[0052] As a preferred solution of the utility model, the force-applying mechanism includes a third motor, a rocker rod and a force-applying member, and the force-applying member is a movable end of the force-applying mechanism;
[0053] The third motor is arranged on the mounting seat, and the third motor drives the swing rod to rotate, wherein the rotation plane of the swing rod and the movement plane of the force applying member overlap or are parallel;
[0054] A connecting piece is provided on the top of the force applying piece, and a track is provided on the connecting piece for the end of the swing rod to slide;
[0055] The swing rod drives the force applying member to perform reciprocating motion in the vertical direction through its own rotation.
[0056] As a preferred solution of the utility model, the force-applying member includes a base and at least one set of unlocking push rods, and the unlocking push rods are vertically arranged downward at the bottom of the base; each of the limiting members is correspondingly provided with a set of unlocking push rods, and the unlocking push rods are located directly above the force-bearing portion;
[0057] The connecting member is arranged on the top of the base, and the base is provided with a guide hole sliding along the guide column;
[0058] The stopper is provided with a through hole in the vertical direction for the unlocking push rod to pass through.
[0059] As a preferred solution of the utility model, the force applying member further comprises at least two sets of door opening push rods, and the door opening push rods are vertically downwardly arranged at the bottom of the base;
[0060] The positions of the door-opening push rods are arranged such that at least one set of door-opening push rods is respectively arranged right above the edges of the two door panels.
[0061] As a preferred solution of the utility model, the length of the door opening push rod corresponding to the door panel provided with the stop bar is greater than the length of the door opening push rod corresponding to another door panel.
[0062] As a preferred solution of the utility model, a sealing strip is provided around the bottom of the side wall of the cylinder so that when the discharge port of the cylinder is located inside the silo, the sealing strip can fill the gap between the cylinder and the entrance of the silo.
[0063] As a preferred solution of the utility model, the bracket is arranged around the cylinder in a horizontal position, and the sealing strip is arranged on the side wall of the bracket.
[0064] Compared with the prior art, the utility model has the following beneficial effects:
[0065] The utility model provides a bottom unloading upper barrel, which is transported by a trolley, and the space required for unloading of the trolley is adjusted by a moving and clamping mechanism, so that the material in the barrel falls directly into the silo from top to bottom, thereby reducing the space required for unloading of the barrel, so that the discharge port of the barrel can be completely discharged after entering the silo, and reducing the impact of dust generated by unloading on the external environment;
[0066] The utility model has a dust collecting upper cover and a flange surface seal on the upper barrel, so that the dust generated by the feeding material is controlled inside the barrel, thereby reducing the dust;
[0067] The feeding barrel of the utility model is provided with a dust suction device, which can reduce the risk of dust overflow and pollution of materials during material replenishment, and can meet the needs of various application sites. BRIEF DESCRIPTION OF THE DRAWINGS
[0068] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.
[0069] Figure 1 A structural schematic diagram of an automatic loading vehicle is provided for the utility model;
[0070] Figure 2 Provided for the utility model Figure 1 A schematic diagram of the structure of the vehicle body in the illustrated embodiment;
[0071] Figure 3 Provided for the utility model Figure 1 A schematic diagram of the structure of the upper cover mechanism in the illustrated embodiment;
[0072] Figure 4 Provided for the utility model Figure 1 A schematic diagram of the external structure of the dust collecting device in the illustrated embodiment;
[0073] Figure 5 Provided for the utility model Figure 1 A schematic diagram of the internal structure of the dust collecting device in the illustrated embodiment;
[0074] Figure 6 Provided for the utility model Figure 1 A schematic diagram of the structure of the loading barrel in the embodiment shown;
[0075] Figure 7 Provided for the utility model Figure 1 A schematic diagram of the structure of the cylinder bottom blocking member in the embodiment shown in the open state;
[0076] Figure 8 Provided for the utility model Figure 1 A partial schematic diagram of the embodiment in which the limiting member imposes restrictions on the blocking member at the bottom of the cylinder;
[0077] Fig. 9 Provided for the utility model Figure 1 A schematic diagram of the structure of the automatic feeding device in the illustrated embodiment;
[0078] Fig.10 Provided for the utility model Figure 1 A schematic diagram of the overall structure of the moving mechanism, the clamping mechanism and the force-applying mechanism in the illustrated embodiment;
[0079] Fig.11 yes Fig.10 Side view of the structure shown.
[0080] The numbers in the figure represent the following:
[0081] 1- cylinder, 110- feed port, 12- discharge port, 13- bracket, 14- slot, 15- sealing strip;
[0082] 2-blocking member, 21-first torsion spring, 22-stop bar, 23-door body, 24-limiting plate, 25-limiting groove;
[0083] 3-limiting member, 31-insertion part, 32-connecting part, 33-force bearing part, 34-second torsion spring, 35-rotation axis;
[0084] 4-moving mechanism, 41-first screw pair, 42-first motor, 43-mounting seat;
[0085] 5-clamping mechanism, 51-second screw pair, 52-second motor, 53-clamping claw;
[0086] 531-short side, 532-long side, 533-positioning block, 534-inclined surface, 535-guide column, 536-stop block;
[0087] 6-force applying mechanism, 61-third motor, 62-rocker, 63-force applying member, 64-connecting member, 65-track;
[0088] 631-base, 632-unlocking push rod, 633-door opening push rod;
[0089] 7- Control components;
[0090] 8-body; 81-bottom plate; 82-chassis side plate; 83-driving wheel; 84-driven wheel; 85-rotating servo motor; 86-removable lithium battery pack; 87-rib plate;
[0091] 9-upper cover mechanism; 91-support plate; 92-lifting guide rail assembly; 93-dust collection upper cover; 94-electromagnetic lock; 95-laser ranging sensor;
[0092] 10-dust suction device; 101-dust suction housing; 102-dust suction pipe; 103-dust suction bag; 104-dust suction fan; 11-mounting plate. DETAILED DESCRIPTION
[0093] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0094] like Figures 1 to 11 As shown, the utility model provides an automatic feeding vehicle, comprising a vehicle body 8, a moving mechanism 4, a force applying mechanism 6 and a feeding cylinder.
[0095] The moving mechanism 4 is vertically arranged on the vehicle body 8 through the mounting plate 11, the sliding end of the moving mechanism 4 slides on the mounting plate 11, the force applying mechanism 6 is slidably installed on the sliding end, and the unloading port where the loading barrel is located is limited.
[0096] The moving mechanism 4 can drive the loading cylinder to slide on the vehicle body 8, and make the bottom of the loading cylinder pass through the vehicle body 8 and enter into the silo material port or the interior of the silo.
[0097] The force-applying mechanism 6 can release the limit at the discharge port of the upper barrel;
[0098] The vehicle body 8 reciprocates between the loading location and the material bin, and one reciprocating movement constitutes one loading cycle.
[0099] The vehicle body 8 is the basic structure of the RGV trolley, which is generally directional. In this embodiment, the vehicle body 8 can drive the loading barrel to be transported from the loading place to the feeding port. The moving mechanism 4 drives the loading barrel to move up and down, so that the bottom of the loading barrel can pass through the vehicle body 8 into the inside of the silo, leaving space for unloading. During transportation, the loading barrel contains materials, and the bottom of the loading barrel is limited, so the materials will not fall. When refilling, the force-applying mechanism 6 releases the limit at the unloading port of the loading barrel, and the materials flow directly from the loading barrel into the silo, thereby reducing the exposed space during unloading and reducing dust.
[0100] A clamping mechanism 5 is also included.
[0101] The moving mechanism 4 is vertically arranged on the vehicle body 8 through the mounting plate 11, the clamping mechanism 5 is mounted on the moving mechanism 4, the force applying mechanism 6 is slidably mounted on the clamping mechanism 5, and the unloading port where the loading barrel is located is limited.
[0102] The clamping mechanism 5 is used to clamp the loading barrel, the moving mechanism 4 is used to drive the loading barrel to slide up and down on the vehicle body 8, and the force-applying mechanism 6 can release the limit at the loading barrel unloading port.
[0103] The vehicle body 8 moves to the loading position, the clamping mechanism 5 clamps the loading barrel, the moving mechanism 4 lifts the loading barrel to the top of the mounting plate 11, the vehicle body 8 drives the loading barrel to move horizontally to the silo, the moving mechanism 4 makes the unloading port of the loading barrel be located directly above the entrance of the silo or inside the silo, the force-applying mechanism 6 releases the limit at the unloading port of the loading barrel, and the material in the loading barrel is automatically unloaded, thereby replenishing the silo.
[0104] After the feeding is completed, the force-applying mechanism 6 leaves, the feeding port of the loading barrel is automatically limited, the vehicle body 8 moves back to the feeding position, the moving mechanism 4 raises the loading barrel to the bottom of the mounting plate 11, the clamping mechanism 5 releases the clamping of the loading barrel, and the loading barrel is separated from the vehicle body 8.
[0105] The vehicle body 8 reciprocates between the loading location and the material bin, and one reciprocating movement constitutes one loading cycle.
[0106] The vehicle body 8 is the basic structure of the RGV trolley and generally moves in a directional manner. In this embodiment, the vehicle body 8 can transport the loading barrel from the loading point to the feeding port through the clamping mechanism 5. During the transportation process, the loading barrel contains materials, and the bottom of the loading barrel is limited, so the materials will not spill.
[0107] In order to ensure that the loading barrel does not spill during transportation, but can automatically discharge materials at the feeding port, a force-applying mechanism 6 is also provided on the moving mechanism 4. The force-applying mechanism 6 moves with the moving mechanism 4. In the clamping state, the force-applying mechanism 6 and the clamping mechanism 5 are relatively stationary, but what is special is that the force-applying mechanism 6 can slide up and down independently relative to the clamping mechanism 5. The force-applying mechanism 6 has a special function. The force-applying mechanism 6 is used to automatically open and close the loading barrel, so as to realize the free sliding of materials from the top to the bottom inside the loading barrel and reduce the discharge amplitude.
[0108] The vehicle body 8 in this embodiment can move back and forth between the loading point and the feeding port, and carry the loading barrel located at the loading point to the feeding port of the silo through the clamping mechanism 5. During the carrying process, the relative position of the loading barrel is guaranteed by the moving mechanism 4 to realize the transfer of materials.
[0109] When the material is transferred to the corresponding feeding port, the force-applying mechanism 6 moves downward, and the bottom limit of the upper barrel is released, so that the material in the upper barrel is automatically tilted to the feeding port, realizing automatic feeding.
[0110] In the present invention, the structure of the vehicle body 8 can be selected from a wide range, and the vehicle body 8 includes a bottom plate 81 , and the bottom plate 81 is provided with holes for the loading barrel to pass through.
[0111] Chassis side plates 82 are provided on both sides of the bottom plate 81, and driving wheels 83 and driven wheels 84 are respectively installed at the front and rear of the chassis side plates 82. The driving wheel 83 is driven by a rotating servo motor 85, and a removable lithium battery pack 86 is provided on the rotating servo motor 85. The removable lithium battery pack 86 is used to supply power to the rotating servo motor 85, the moving mechanism 4, the clamping mechanism 5 and the force applying mechanism 6;
[0112] The mounting plate 11 is vertically mounted on the bottom plate 81 , and ribs 87 are provided on both sides of the mounting plate 11 . The ribs 87 serve as a supporting structure for mounting the moving mechanism 4 .
[0113] Furthermore, it also includes an upper cover mechanism 9, which is used to limit the top opening of the upper barrel. The upper cover mechanism 9 enables the barrel 1 on the RGV trolley to be in a sealed state during transfer and replenishment, thereby reducing dust.
[0114] The upper cover mechanism 9 includes a support plate 91 mounted on the end of the mounting plate 11, a lifting rail assembly 92 is arranged between the support plate 91 and the mounting plate 11, a dust collecting upper cover 93 for dust prevention is arranged on the lifting rail assembly 92, and the lifting rail assembly 92 provides driving and guiding support for the lifting of the dust collecting upper cover 93;
[0115] The dust collecting upper cover 93 can be cooperatively arranged at the upper opening of the loading barrel.
[0116] A laser distance sensor 95 is arranged above the lifting guide rail assembly 92. The distance laser on the laser distance sensor 95 can pass through the dust collection cover 93. The laser distance sensor 95 is used to judge the amount of material stored in the loading barrel.
[0117] Furthermore, the RGV vehicle also includes a dust suction device 10, which has the function of actively removing dust.
[0118] The dust collecting device 10 comprises a dust collecting housing 101 mounted on the bottom plate 81, a dust collecting pipe 102 is connected between the dust collecting housing 101 and the dust collecting upper cover 93, a dust collecting bag 103 is arranged in the dust collecting housing 101, and a dust collecting fan 104 is connected to the dust collecting pipe 102. The vacuum suction force generated by the dust collecting fan 104 sucks the dust in the cylinder 1 into the dust collecting bag 603 for collection, thereby further reducing the unloading dust.
[0119] The vacuuming action of RGV is as follows:
[0120] The RGV runs in the matching profile guide rail. When the RGV receives the material replenishment task, it first drives to the barrel grabbing position, confirms the material information of the barrel, and then clamps the barrel by the clamping mechanism 5;
[0121] Then the moving mechanism 4 lifts the loading barrel to the upper cover position, at which time the electromagnetic lock 94 of the upper cover mechanism 9 is energized to retract the lock tongue, and the dust collection upper cover 93 falls on the upper opening of the barrel 1 by its own weight to seal;
[0122] When the RGV moves to the position where material needs to be added, the bottom of the upper barrel can be extended into the silo;
[0123] The moving mechanism 4 descends to the lowest feeding position, at which time the lower flange surface of the upper barrel is close to the feeding port to achieve sealing and dustproof;
[0124] The material slides down into the silo from top to bottom;
[0125] The laser distance sensor 95 senses the end of material unloading, and the dust suction fan 104 removes the dust in the barrel;
[0126] When the timed vacuuming is finished, the barrel will close;
[0127] The RGV drives to the barrel storage position, puts down the empty upper barrel and leaves, completing a cycle.
[0128] The structure of the loading barrel can be selected within any range, and the structure is as follows:
[0129] like Figure 1 and Figure 2 As shown, the present invention provides an embodiment of a loading barrel, comprising a barrel body 1, a blocking member 2 and a limiting member 3.
[0130] The cylinder 1 is used to hold materials, and openings are provided at the top and bottom of the cylinder 1 , wherein the opening at the top of the cylinder 1 is a feed port 110 , and the opening at the bottom of the cylinder 1 is a discharge port 12 .
[0131] In this embodiment, the shape of the cylinder 1 is not limited, and it can be a cylinder or a polygonal cylinder.
[0132] Among them, the blocking member 2 is arranged at the discharge port 12 of the cylinder 1; and the blocking member 2 can completely cover the discharge port 12 to close the discharge port 12, and the blocking member 2 is used to prevent the material in the cylinder 1 from falling to the outside of the cylinder 1 through the discharge port 12; and the blocking member 2 can move away from the discharge port 12 to open the discharge port 12 to realize material unloading.
[0133] In this embodiment, there is no restriction on the specific structure and quantity of the blocking member 2, nor is there any restriction on the position; in this embodiment, the blocking member 2 can move under the gravity of the material to open the discharge port 12, or the blocking member 2 can move under its own gravity to open the discharge port 12, or the blocking member 2 can move under the action of an external force to open the discharge port 12.
[0134] The limiting member 3 can act on the blocking member 2 to limit the blocking member 2 from moving away from the discharge port 12 , and the limiting member 3 can be released from its limiting effect on the blocking member 2 .
[0135] In the present embodiment, there is no restriction on the specific structure of the limit member 3, which is specifically capable of contacting with the blocking member 2 and imposing restrictions on the blocking member 2 to prevent the blocking member 2 from separating from the discharge port 12, so that the discharge port 12 remains in a closed state; at the same time, the blocking member 2 is a movable structure, which can move under the action of an external force to release the restriction on the blocking member 2, so that the blocking member 2 can be moved to open the discharge port 12, and the material in the cylinder 1 falls from the discharge port to achieve unloading.
[0136] There is no limit to the number of the limiting members 3 , and each blocking member 2 is provided with at least one group of limiting members 3 . To ensure the stability of the force applied to the limiting members 3 , two groups of limiting members 3 may be symmetrically provided on each blocking member 2 .
[0137] This embodiment provides an example of a blocking member 2, such as Figure 2 As shown:
[0138] The blocking member is a double-door structure composed of two door panels 23; the door panels 23 are hinged to the edges of the discharge port 12; wherein, the two door panels 23 completely cover the discharge port 12 in a closed state, and the joint between the blocking member 2 and the discharge port 12 is completely closed.
[0139] Furthermore, in order to ensure the sealing of the gap between the two door panels 23 in the closed state, in the present embodiment, one of the door panels 23 extends toward the gap at the edge close to the gap between the two door panels 23 to form a stop bar 22, and the stop bar 22 covers the above-mentioned gap to prevent the material in the cylinder 1 from leaking from the gap.
[0140] Furthermore, in this embodiment, a first torsion spring 21 mounted on a hinge shaft is connected between the door panel 23 and the discharge port 12, and both ends of the first torsion spring 21 act on the cylinder 1 and the door panel 23 respectively. The first torsion spring 21 applies a torque to the door panel 23 so that the door panel 23 closes relative to the discharge port 12, so that the two door panels 23 themselves have a driving force to close.
[0141] Furthermore, the torsion of the first torsion spring 21 is large enough to enable the two door panels 23 to return to the state of closing the discharge port 12 in the open state without restriction.
[0142] In this embodiment, when the gravity of the material inside the cylinder 1 is greater than the torsion of the first torsion spring 21, the door panel 23 will flip downward (open the door panel 23), and the material in the cylinder 1 will fall from the discharge port 12. In order to avoid the above situation, the present application provides an embodiment of a limiter and an embodiment of the contact between the door panel and the limiter, such as Figure 3 As shown:
[0143] The door plate 23 extends outward from the cylinder 1 to form a limit plate 24 , one end of the limit member 3 can abut against the limit plate 24 to limit the opening action of the door plate 23 , and the end of the limit member 3 can deviate from the limit plate 24 under the action of external force.
[0144] Furthermore, a slot 25 is provided on the side of the limit plate 24, an insertion portion 31 which can be inserted into the slot 25 is formed at one end of the limit member 3, and a connecting portion 32 is formed at the other end. The connecting portion 32 is provided on the side of the cylinder 1 through a rotating shaft 35, and the limit member 3 can rotate around the rotating shaft 35; the insertion portion 31 of the limit member 3 can be disengaged from the slot 25 as the limit member 3 rotates.
[0145] In this embodiment, the limit member 2 is vertically arranged, and a bracket 13 is horizontally provided at a lower position on the outer wall of the cylinder 1. The limit member 2 is rotatably connected to the bracket 13, and the rotation plane of the limit member 3 intersects with the door panel 23; wherein, the connecting portion 32 is located at the top of the limit member 2, and the insertion portion 31 is located at the bottom of the limit member 2.
[0146] When unloading is required, external force is applied to the limit member 3, so that the limit member 3 rotates in a direction in which its bottom is directed away from the door panel 23, so that the insertion portion 31 is disengaged from the slot 25 of the door panel 23. The door panel 23 loses its restriction and opens downward under the combined action of its own gravity and the gravity of the material to achieve unloading.
[0147] If the sum of its own gravity and the material gravity is less than the torsion of the first torsion spring 21, even if the door panel 23 loses its restriction, it is not enough to make the door panel 23 flip downward. In this case, while applying external force to the limit member 3, it is also necessary to apply pressure from top to bottom to the edge of the door panel 23, so that the door panel 23 opens downward to achieve unloading.
[0148] In view of the above situation, in order to facilitate opening of the door panel 23, the external force applied to the rod body 34 and the external force applied to the door panel 23 are in the same direction.
[0149] Therefore, in this embodiment, the connecting portion 32 extends toward one side of the cylinder 1 to form a force-bearing portion 33. Under the action of an external force from top to bottom, the force-bearing portion 33 can cause the limit member 3 to rotate in a direction so that its bottom is away from the door panel 23, so that the insertion portion 31 is disengaged from the slot 25.
[0150] Moreover, there is a space above the force-bearing portion 33 for applying external force; similarly, there is a space above the edge of the door panel 23 for applying external force.
[0151] Furthermore, a second torsion spring 34 is disposed on the rotating shaft 35 , and the second torsion spring 34 is configured to always have a torsion force that causes the insertion portion 31 of the limiting member 3 to move toward the slot 25 .
[0152] The limiting member can continue to limit the door panel 23 in the absence of external force, so that the door panel 23 can fit with the discharge port 12 and continuously maintain the closed state.
[0153] Furthermore, in order to simplify the structure, in this embodiment, two groups of limit members 3 are provided, which are symmetrically arranged at both ends of the middle position of the two door panels 23, and enable the insertion portion 31 to be simultaneously inserted into the slots 25 on the edges of the two door panels 23 on the same side.
[0154] like Figure 4 and Figure 5As shown, the present invention provides a specific embodiment of an automatic feeding device for transferring materials to a silo, including the feeding cylinder, the moving mechanism 4, the clamping mechanism 5 and the force applying mechanism 6 mentioned above.
[0155] The clamping mechanism 5 and the force-applying mechanism 6 are both arranged at the movable end of the moving mechanism 4, so that the clamping mechanism 5 and the force-applying mechanism 6 move synchronously.
[0156] The clamping mechanism 5 is used to clamp the cylinder 1; the moving mechanism 4 is used to move the clamped cylinder 1 to the top of the silo, and make the discharge port of the cylinder 1 located directly above the entrance of the silo or inside the silo; the force-applying mechanism 6 is used to apply an external force to the limit member 3 on the cylinder 1, so that the limit member 3 moves to release the restriction of the limit member 3 on the door panel 23; at the same time, the force-applying mechanism 6 can also apply an external force to the door panel 23, so that the door panel 23 is opened, and the material inside the cylinder 1 falls from the discharge port 12 into the silo to complete the unloading.
[0157] In this embodiment, the position of the force-applying mechanism 6 is set as follows: when the clamping mechanism 5 clamps the cylinder 1 , the movable end of the force-applying mechanism 6 is located directly above the force-bearing portion 33 and the edge of the door panel 23 .
[0158] In this embodiment, an embodiment of a moving mechanism 4 is provided, such as Figure 5 and Figure 6 As shown:
[0159] The moving mechanism 4 includes a first screw pair 41 , a first motor 42 and a mounting seat 43 .
[0160] The first screw pair 41 is vertically arranged, the first motor 42 is used to drive the screw of the first screw pair 41 to rotate, and the mounting seat 43 is vertically arranged on the nut slider of the first screw pair 41; the mounting seat 43 is used to set the clamping mechanism 5 and the force applying mechanism 6.
[0161] Among them, the first screw pair is mainly used to move the cylinder 1 from just above the entrance of the silo to the inside of the silo, so that the cylinder 1 completes unloading inside the silo; the first screw pair 41 can be installed on any carrier to cooperate to complete the action of moving the cylinder 1 from any position to just above the entrance of the silo.
[0162] In this embodiment, an embodiment of a clamping mechanism 5 is provided, such as Figure 5 and Figure 6 As shown:
[0163] The clamping mechanism 5 includes a second screw pair 51, a second motor 52 and two groups of clamping jaws 53; the second screw pair 51 and the second motor 52 are arranged on the mounting seat 43, and the second motor 52 is used to drive the screw of the second screw pair 51 to rotate; wherein the second screw pair 51 is arranged horizontally, the screw of the second screw pair 51 is a bidirectional screw, and nut sliders are provided at both ends of the screw; the two groups of clamping jaws 53 are symmetrically arranged on the nut sliders of the second screw pair 51.
[0164] The thread of the threaded part of the bidirectional screw is half left-handed and half right-handed; when the screw rotates in one direction, the two nut sliders on the thread separate or move closer to each other, and when it rotates in the opposite direction, the two nut sliders move closer or separate; the wall is clamped by the jaws 53 moving towards each other (moving closer), so that the cylinder 1 moves with the movement of the moving mechanism 4 and the movable end of other carriers.
[0165] In order to ensure that the cylinder 1 is relatively fixed relative to the clamping jaw 53 during the process of clamping the cylinder 1, and to ensure that the execution end of the force-applying mechanism 6 can be located directly above the force-bearing portion 33 when the cylinder 1 is unloading, an embodiment of the clamping jaw 53 is provided, such as Figure 5 As shown:
[0166] The projection shape of the clamping jaws 53 is an L-shaped structure, and the two groups of clamping jaws 53 are arranged horizontally; wherein, the short side 531 of the clamping jaws 53 is used to connect with the nut slider of the second screw pair 51; the long side 532 of the two groups of clamping jaws 53 are respectively provided with positioning blocks 533 on the facing sides; the distance between the positioning block 533 and the short side 531 of the clamping jaw 53 is consistent with the width of the side surface of the corresponding position of the cylinder 1; and in the state of clamping the cylinder 1, the short side 531 of the clamping jaw 53, the long side 532 of the clamping jaw 53 and the positioning block 533 are all in contact with the side wall of the cylinder 1.
[0167] The clamping claw 53 structure can restrict the cylinder 1 so that the position of the cylinder 1 is relatively fixed during movement and will not deviate in the vertical direction; so that the movable end of the force-applying member 63 can always be located directly above the force-bearing portion 33.
[0168] Furthermore, in this embodiment, in order to limit the horizontal movement of the cylinder 1 during the movement, the distance between the positioning block 533 and the short side 531 of the clamping jaw 53 is consistent with the width of the side surface of the corresponding position of the cylinder 1. This results in that when the two sets of clamping jaws 53 are clamping the cylinder 1, the side surfaces of the clamping jaws 53 and the cylinder 1 cannot be accurately matched. In order to solve this problem, the following structure is provided, such as Figure 5 As shown:
[0169] The surface of the positioning block 533 facing the short side 531 of the clamp 53 is an inclined surface 534; wherein, the distance between one end (outer end) of the inclined surface 534 close to the end face of the positioning block 533 and the short side 531 of the clamp 53 is greater than the distance between the other end (inner end) of the inclined surface 534 and the short side 531 of the clamp 53.
[0170] That is, the distance between the outer end of the inclined surface 534 and the short side 531 of the clamp 53 is greater than the width of the corresponding side of the cylinder 1, and the distance between the inner end of the inclined surface 534 and the short side 531 of the clamp 53 is equal to the width of the corresponding side of the cylinder 1; in the process of the clamp 53 clamping the cylinder 1, the clamping space formed by the outer end of the inclined surface 534 of the positioning block 533 and the short side 531 of the clamp 53 can easily select the side of the cylinder 1.
[0171] As the jaws 53 on both sides move toward each other, the side wall of the cylinder 1 approaches the long side 532 of the jaw 53 until the side wall of the cylinder 1 is in contact with the long side 532 of the jaw 53 (the cylinder 1 is clamped in the X-axis or Y-axis direction in the horizontal plane). At the same time, the clamping space formed by the inner end of the inclined surface 534 of the positioning block 533 and the short side 531 of the jaw 53 clamps the side wall of the cylinder 1 (the cylinder 1 is clamped in the Y-axis or X-axis direction in the horizontal plane).
[0172] Furthermore, in this embodiment, in order to ensure that the movable end of the force-applying member 63 can move vertically downward, and the movement direction will not deviate during the movement, and the external force can be accurately applied to the force-bearing portion 33, the following structure is provided, as shown in FIG. Figure 5 and Figure 6 As shown:
[0173] At least one set of guide posts 535 are respectively provided vertically downward at the bottom of the two sets of clamping jaws 53 , and a stopper 536 is provided at the bottom of the guide posts 535 ; the movable end of the force applying mechanism 6 reciprocates in the vertical direction along the guide posts 535 .
[0174] Furthermore, in order to further improve the stability of the cylinder 1 during movement, in this embodiment, the side walls of the cylinder 1 are provided with grooves 14 matching the clamping jaws 53 on both sides of the clamping jaws 53, and the grooves 14 are used to fix the clamping jaws 53 to limit the displacement of the clamping jaws 53 in the vertical direction.
[0175] Therefore, when the clamping mechanism 5 clamps the cylinder 1 , the cylinder 1 will not slide downward due to the influence of the gravity of the cylinder 1 and the material inside it.
[0176] In this embodiment, an embodiment of a force applying mechanism 6 is provided, as shown in FIG. Figure 5 and Figure 6 As shown:
[0177] The force applying mechanism 6 includes a third motor 61 , a rocker rod 62 and a force applying member 63 ; wherein the force applying member 63 is a movable end of the force applying mechanism 6 .
[0178] The third motor 61 is arranged on the mounting base 43, and the third motor 61 drives the rocker arm 62 to rotate, wherein the rotation plane of the rocker arm 62 and the movement plane of the force-applying member 63 overlap or are parallel; a connecting member 64 is provided on the top of the force-applying member 63, and a track 65 is provided on the connecting member 64 for the end of the rocker arm 62 to slide; the rocker arm 62 drives the force-applying member 63 to reciprocate in the vertical direction through its own rotation.
[0179] In this embodiment, the track 65 is a through slot that passes through the connecting member 64 , and a sliding rod is vertically provided at the end of the swing rod 62 , and the sliding rod passes through the through slot so that the sliding rod can slide along the through slot.
[0180] Furthermore, in this embodiment, the force-applying member 63 includes a base 631 and at least one group of unlocking push rods 632, wherein the unlocking push rods 632 are vertically downwardly arranged at the bottom of the base 631; each limiting member 3 is correspondingly provided with a group of unlocking push rods 632, and the unlocking push rods 632 are located directly above the force-bearing portion 33; the connecting member 64 is arranged at the top of the base 631, and the base 631 is provided with a guide hole that slides along the guide column 535; the block 536 is provided with a through hole in the vertical direction for the unlocking push rod 632 to pass through.
[0181] Furthermore, in order to avoid the situation where the gravity of the material in the cylinder 1 is insufficient to open the door panel 23, in this embodiment, the force-applying member 63 also includes at least two groups of door-opening push rods 633, and the door-opening push rods 633 are vertically downwardly arranged at the bottom of the base 631; the positions of the door-opening push rods 633 are set so that at least one group of door-opening push rods 633 is respectively provided directly above the edges of the two door panels 23.
[0182] When the unlocking push rod 632 moves downward, the door opening push rod 633 also moves downward synchronously, exerting downward pressure on the edge of the door panel 23, and the auxiliary door panel 23 is opened to complete the unloading.
[0183] During the process, there is a sequence in the time when the unlocking push rod 632 and the door opening push rod 633 contact the corresponding force-applying objects; that is, the unlocking push rod 632 first applies force to the force-bearing part 33, and then the door opening push rod 633 applies force to the edge of the door panel 23; therefore, the length of the unlocking push rod 632 is greater than the length of the door opening push rod 633.
[0184] Furthermore, with respect to the case where one of the door panels 23 is provided with a stop bar 22, in the present embodiment, there is also a sequence in the time when the door opening push rod 633 contacts the corresponding door panel 23; that is, the door opening push rod 633 corresponding to the door panel 23 provided with the stop bar 22 applies force first, and the door opening push rod 633 corresponding to the other door panel 23 applies force later; therefore, the length of the door opening push rod 633 corresponding to the door panel 23 provided with the stop bar 22 is greater than the length of the door opening push rod 633 corresponding to the other door panel 23.
[0185] In this embodiment, the cylinder 1 enters the silo from the entrance of the silo and discharges the material inside the silo. In order to prevent the dust generated by the unloading from floating out from the entrance of the silo, an embodiment is provided for the cylinder 1, such as Figure 1 and Figure 3 As shown:
[0186] A sealing strip 15 is provided around the bottom of the side wall of the cylinder 1 so that when the discharge port of the cylinder 1 is located inside the silo, the sealing strip 15 can fill the gap between the cylinder 1 and the entrance of the silo; the dust generated by unloading floats out from the entrance of the silo.
[0187] Furthermore, in this embodiment, in order to optimize the structure, the bracket 13 is arranged around the cylinder 1 in a horizontal position, and the sealing strip 15 is arranged on the side wall of the bracket 13 .
[0188] The process of feeding the trolley in this embodiment is as follows:
[0189] Load the material into the upper barrel at the loading point, and the bottom of the upper barrel will be self-locking;
[0190] The vehicle body 8 moves to the feeding position, and the clamping mechanism 5 clamps the body of the cylinder 1. The moving mechanism 4 drives the cylinder 1 to rise. Due to the limit, the discharge port is in a closed state.
[0191] The vehicle body 8 drives the cylinder body 1 to move to the feeding place, and the clamping mechanism 5 moves up and down so that the bottom of the cylinder body 1 is aligned with the feeding port at the feeding place. At this time, the force-applying mechanism 6 presses down, the discharge port opens, and the feeding starts;
[0192] After the feeding is completed, the force-applying mechanism 6 moves upward and the discharge port is closed;
[0193] The vehicle body 8 moves to the loading position, and the clamping mechanism 5 puts down the cylinder body 1, completing a cycle.
[0194] The operation process of the vehicle body 8 , the moving mechanism 4 , the force applying mechanism 6 , and the clamping mechanism 5 is controlled by an electric control component 7 disposed on the vehicle body 8 .
[0195] This RGV loading barrel can meet the needs of transferring and replenishing a variety of materials. It has a self-locking function for the lower double-door, which can realize automatic unlocking of the loading barrel and forced door opening for material dropping.
[0196] Through the automatic loading vehicle of this embodiment, automatic transfer and replenishment of materials in the barrel can be realized, and the loading barrel has a self-locking function of the lower double-door, which can realize automatic unlocking of the loading barrel and forced door opening to drop materials; and it has a dust suction cover, a loading barrel flange surface seal and a dust suction device, which can reduce the risk of dust overflow and pollution during material replenishment; the overall structure is compact and the degree of automation is improved.
[0197] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.
Claims
1. An automatic loading vehicle, characterized in that: include: A vehicle body (8), a moving mechanism (4), a force-applying mechanism (6) and a loading cylinder; The moving mechanism (4) is vertically arranged on the vehicle body (8) through a mounting plate (11), the sliding end of the moving mechanism (4) slides on the mounting plate (11), the force applying mechanism (6) is slidably mounted on the sliding end, and the unloading port where the loading barrel is located is limited; The moving mechanism (4) can drive the upper barrel to slide on the vehicle body (8) and enable the bottom of the upper barrel to pass through the vehicle body (8) and enter the silo material port or the interior of the silo; the force-applying mechanism (6) can release the limit at the lower material port of the upper barrel.
2. The automatic loading vehicle according to claim 1, characterized in that: It also comprises a clamping mechanism (5), wherein the clamping mechanism (5) is used to clamp the loading cylinder, and the clamping mechanism (5) is arranged at the movable end of the moving mechanism (4).
3. The automatic loading vehicle according to claim 2, characterized in that: The vehicle body (8) comprises a bottom plate (81), and a hole is provided on the bottom plate (81) for the loading cylinder to pass through; Chassis side plates (82) are arranged on both sides of the bottom plate (81), and driving wheels (83) and driven wheels (84) are respectively installed at the front and rear of the chassis side plates (82), and the driving wheels (83) are driven by a rotating servo motor (85), and a removable lithium battery pack (86) is arranged on the rotating servo motor (85), and the removable lithium battery pack (86) is used to supply power to the rotating servo motor (85), the moving mechanism (4), the clamping mechanism (5) and the force applying mechanism (6); The mounting plate (11) is vertically mounted on the base plate (81), and rib plates (87) are provided on both sides of the mounting plate (11). The rib plates (87) serve as supporting structures for mounting the moving mechanism (4).
4. The automatic loading vehicle according to claim 3, characterized in that: An upper cover mechanism (9) is provided on the top of the mounting plate (11), and the upper cover mechanism (9) is used to limit the top opening of the upper barrel.
5. The automatic loading vehicle according to claim 4, characterized in that: The upper cover mechanism (9) comprises a support plate (91) mounted on the end of the mounting plate (11); a lifting guide rail assembly (92) is arranged between the support plate (91) and the mounting plate (11); a dust collecting upper cover (93) for dust prevention is arranged on the lifting guide rail assembly (92); the lifting guide rail assembly (92) provides driving and guiding support for the lifting of the dust collecting upper cover (93); The dust collecting upper cover (93) can be arranged in cooperation with the upper opening of the loading barrel.
6. The automatic loading vehicle according to claim 5, characterized in that: An electromagnetic lock (94) is provided on the top of the lifting guide rail assembly (92), and the dust collection upper cover (93) can be locked at the highest waiting position of the lifting guide rail assembly (92) by means of the electromagnetic lock (94).
7. The automatic loading vehicle according to claim 6, characterized in that: The removable lithium battery pack (86) is provided with a dust suction device (10), and the dust suction device (10) is used to suction dust from inside the loading barrel.
8. The automatic loading vehicle according to claim 7, characterized in that: The dust collection device (10) comprises a dust collection shell (101) mounted on the bottom plate (81); a dust collection pipe (102) is connected between the dust collection shell (101) and the dust collection upper cover (93); a dust collection bag (103) is arranged in the dust collection shell (101); and the dust collection pipe (102) is connected to a dust collection fan (104); The vacuum suction force generated by the dust suction fan (104) sucks the dust in the upper opening of the loading barrel into the dust suction bag (103).
9. The automatic loading vehicle according to claim 6, characterized in that: A laser distance sensor (95) is arranged above the lifting guide rail assembly (92); the distance laser on the laser distance sensor (95) can pass through the dust collection upper cover (93); and the laser distance sensor (95) is used to determine the amount of material stored in the loading barrel.
10. The automatic loading vehicle according to claim 1, characterized in that: The loading barrel comprises: A cylinder (1) having a feed inlet (110) at one end and a discharge outlet (12) at the other end; a blocking member (2) disposed at the discharge port (12), wherein the blocking member (2) is capable of completely covering the discharge port (12) to close the discharge port (12), and the blocking member (2) is capable of moving away from the discharge port (12) to open the discharge port (12); The limiting member (3) can act on the blocking member (2) to limit the blocking member (2) from deviating from the discharge port (12), and the limiting member (3) can be released from its limiting effect on the blocking member (2).