Delivery device

Abstract

The present invention discloses a distribution device, which relates to the technical field of distribution equipment, and the main purpose is to make the use of the distribution device more convenient. The distribution device includes: a cargo hold, at the bottom of the cargo hold, two opposite legs are slidably arranged, and the two legs can slide relative to each other; a chassis, a driving mechanism is arranged inside the chassis, and two opposite pulling members are arranged on the driving mechanism. The driving mechanism is used for driving the two pulling members to be respectively connected to the two legs and move closer to each other when the chassis moves between the two legs. The present invention is mainly used for distribution.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution equipment, and more particularly to a distribution device. Background Art

[0002] Distribution devices, such as logistics robots, are widely used in fields such as warehousing, express delivery, and takeout. The cargo compartments and chassis of some logistics robots are of an integrated structure, while those of some logistics robots are of a split structure. Among them, split robots can improve the utilization efficiency of the robot chassis in some fields.

[0003] Currently, in order to ensure that the chassis of the split robot can move smoothly under the cargo compartment, the distance between the legs of the cargo compartment is usually larger than the width of the chassis. This will make the overall width of the robot larger. When the robot is in a building scenario and needs to take the elevator or pass through the turnstile with people, the wider robot will occupy a larger space or be unable to pass through the turnstile, making it inconvenient to use. Summary of the Invention

[0004] In view of this, an embodiment of the present invention provides a distribution device, and the main purpose is to make the use of the distribution device more convenient.

[0005] To achieve the above object, the embodiment of the present invention mainly provides the following technical solutions:

[0006] The embodiment of the present invention provides a distribution device, including:

[0007] A cargo compartment, at the bottom of which two opposite legs are slidably provided, and the two legs can slide relative to each other;

[0008] A chassis, in which a driving mechanism is provided, and two opposite pulling members are provided on the driving mechanism. The driving mechanism is used to drive the two pulling members to be respectively connected to the two legs and move closer to each other when the chassis moves between the two legs.

[0009] Further, the leg includes a leg body and a positioning member connected to the leg body. The leg is slidably connected to the bottom of the cargo compartment through the positioning member, and a through hole is provided on the positioning member;

[0010] When the chassis moves between the two leg bodies, the two pulling members can respectively insert into the through holes of the two positioning members, and the driving mechanism can drive the two pulling members to respectively abut against the inner walls of the two through holes and move closer to each other, so as to pull the two positioning members to drive the two leg bodies to slide back to the two sides of the chassis respectively.

[0011] Further, the outrigger includes an outrigger body and a positioning member connected to the outrigger body. The outrigger is slidably connected to the bottom of the cargo hold through the positioning member, and through holes are provided on the positioning member.

[0012] When the chassis moves between the two outrigger bodies, at least one of the pulling members corresponds to the through holes of at least one of the positioning members.

[0013] Further, a part of the inner wall of the through hole is a first T-shaped wall protruding in the direction towards the other positioning member.

[0014] The pulling member is a first hook body, and the width of the first hook body is adapted to the width at the corner of the first T-shaped wall.

[0015] When the chassis moves between the two outrigger bodies, the first hook body corresponds to the first T-shaped wall, and the first hook body is used to abut against the corner of the first T-shaped wall under the driving action of the driving mechanism to pull the positioning member to slide.

[0016] Further, two engaging members are provided on the chassis.

[0017] When the chassis moves between the two outrigger bodies, the engaging members can be inserted into the through holes, and when the two positioning members slide to drive the two outrigger bodies to retract to both sides of the chassis respectively, the two engaging members are respectively engaged with the through holes of the two positioning members.

[0018] Further, another part of the inner wall of the through hole is a second T-shaped wall protruding in the direction away from the other positioning member.

[0019] The engaging member is a second hook body, and the width of the second hook body is adapted to the width at the corner of the second T-shaped wall.

[0020] When the chassis moves between the two outriggers, the second hook body is inserted into the through hole and corresponds to the second T-shaped wall, and when the positioning member slides to pull the outrigger body to retract to both sides of the chassis, the second hook body is engaged with the corner of the second T-shaped wall.

[0021] Further, the surface of the second hook body opposite to the chassis is a first inclined surface.

[0022] A second inclined surface adapted to the first inclined surface is provided at a position adjacent to the corner of the second T-shaped wall on the positioning member, and the first inclined surface can abut against the second inclined surface.

[0023] Further, the delivery device further includes:

[0024] An elastic member, the elastic member being connected between the two legs;

[0025] The two pulling members are used to overcome the elastic force of the elastic member and move closer to each other under the driving action of the driving mechanism;

[0026] The driving mechanism is also used to drive the two pulling members to move away from each other, so that the elastic member recovers its deformation and spreads the two legs apart.

[0027] Furthermore, the driving mechanism is used to drive the two pulling members to be respectively connected to the two supporting legs and move away from each other.

[0028] Further, the chassis includes a lifting platform opposite to the positioning member, and the lifting platform is provided with a gap extending along the sliding direction of the positioning member;

[0029] The chassis is also provided with a lifting mechanism, which is connected to the lifting platform and is used to drive the lifting platform to rise and lift the positioning member to lift the leg body off the ground, or drive the lifting platform to descend and lower the positioning member to let the leg body land on the ground;

[0030] The two pulling members pass through the slit and can move along the slit;

[0031] When the lifting platform lifts up the positioning member, the pulling member is inserted into the through hole, and when the lifting platform puts down the positioning member, the pulling member is separated from the through hole.

[0032] Further, the driving mechanism includes a driving member, two racks and a gear connected to the driving member, the two racks are slidably arranged side by side on the inner surface of the lifting platform and extend along the sliding direction of the positioning member; the gear is meshed and connected between the two racks;

[0033] The two pulling members are respectively arranged on the two racks;

[0034] The two pulling members and the axis of the gear are located on the same straight line, and the distances between the centers of the two pulling members and the axis of the gear are equal;

[0035] The output end of the driving member is connected to the gear and is used to drive the gear to rotate so that the two racks respectively drive the two pulling members to move synchronously.

[0036] Further, the lifting mechanism comprises at least one connecting rod arranged obliquely, one end of the connecting rod is hinged to any one of the racks, and the other end is hinged in the chassis;

[0037] The connecting rod is used to rotate along with the movement of the rack to drive the lifting platform to perform lifting movement.

[0038] Furthermore, the lifting mechanism further includes a guide shaft and a linear bearing;

[0039] The linear bearing is disposed within the chassis and extends along the moving direction of the lifting platform;

[0040] One end of the guide shaft is connected to the lifting platform, and the other end is movably disposed within the linear bearing;

[0041] When the lifting mechanism drives the lifting platform to move upward, the guide shaft performs a linear motion within the linear bearing.

[0042] Furthermore, a conductive member is insulatingly disposed on the positioning member, and the conductive member is electrically connected to the power system of the cargo compartment;

[0043] The pulling member is electrically connected to the power supply of the chassis;

[0044] When the positioning member slides and pulls the leg body to retract to both sides of the chassis, the pulling member is in contact connection with the conductive member.

[0045] Furthermore, the delivery device further includes:

[0046] A reflector, the reflector is disposed at the bottom of the cargo compartment;

[0047] A lidar, the lidar is disposed within the chassis and is used to emit laser light to the reflector to determine the position of the cargo compartment.

[0048] Furthermore, an anti-collision detection strip is provided at the front end of the chassis;

[0049] A limiting block is provided at the bottom of the cargo compartment;

[0050] During the process of the chassis moving between the two legs, when the anti-collision detection strip hits the limiting block, the chassis stops moving.

[0051] Furthermore, a polytetrafluoroethylene plate is provided on the outer surface of the lifting platform.

[0052] Furthermore, a flexible first sealing strip is connected between the two pulling members, the width of the first sealing strip is greater than the width of the gap, when the two pulling members approach each other, the first sealing strip bends, and when the two pulling members move away from each other, the first sealing strip extends until it seals the gap; or,

[0053] A flexible second sealing strip is connected between each of the pulling members and the middle of the lifting table, and the width of the second sealing strip is greater than the width of the gap. When the two pulling members approach each other, the second sealing strip bends, and when the two pulling members move away from each other, the second sealing strip extends until it seals the gap.

[0054] With the above technical solution, the present invention has at least the following beneficial effects:

[0055] The distribution device provided by the embodiment of the present invention realizes that when the chassis moves between the two legs of the cargo hold, the driving mechanism can drive the two pulling members to be respectively connected to the two legs of the cargo hold and approach each other by sliding the legs of the cargo hold at the bottom thereof, and the two legs can slide relatively, and a driving mechanism is arranged in the chassis, and two opposite pulling members are arranged on the driving mechanism, so as to pull the two legs to slide and retract to both sides of the chassis respectively, thereby reducing the overall width of the distribution device and improving the convenience of use of the distribution device. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0057] Figure 1 is a schematic structural diagram of a distribution device provided by an embodiment of the present invention;

[0058] Figure 2 is Figure 1 a schematic structural diagram of the cargo hold in ;

[0059] Figure 3 is Figure 1 a schematic structural diagram of the chassis in ;

[0060] Figure 4 is Figure 2 a schematic structural diagram of the leg in ;

[0061] Figure 5 is Figure 4 a schematic structural diagram of the positioning member in ;

[0062] Figure 6 is Figure 5 a schematic A-A sectional structural diagram in ;

[0063] Figure 7 is a schematic structural diagram of the positioning member of the leg being lifted by the lifting table of the chassis;

[0064] Figure 8 is a schematic structural diagram of the positioning member of the leg being pulled by the pulling member so that the leg body retracts to both sides of the chassis;

[0065] Figure 9 is Figure 3 a schematic structural view of the chassis shown with the outer shell removed and in the first perspective;

[0066] Figure 10 is Figure 9 an enlarged schematic structural view of part B in

[0067] Figure 11 is Figure 9 a sectional structural view taken along the C-C direction in

[0068] Figure 12 is Figure 3 a schematic structural view of the chassis shown with the outer shell removed and in the second perspective. Detailed implementation manners

[0069] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The described embodiments are some but not all of the embodiments of the present invention. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention. The embodiments of the present invention will be described in detail below with reference to the drawings.

[0070] In the description of the present embodiment, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of protection of the present embodiment.

[0071] As Figure 1 , Figures 2 to 11 shown, the embodiment of the present invention provides a delivery device, including a cargo hold 1, at the bottom of which two opposite legs 2 are slidably arranged, and the two legs 2 can slide relative to each other; a chassis 3, inside which a driving mechanism 4 is arranged, and on the driving mechanism 4, two opposite pulling members 41 are arranged. The driving mechanism 4 is used for driving the two pulling members 41 to be respectively connected to the two legs 2 and move closer to each other when the chassis 3 moves between the two legs 2, so as to pull the two legs 2 to slide and retract to both sides of the chassis 3 respectively.

[0072] In the distribution device provided by the embodiment of the present invention, the legs 2 of the cargo hold 1 are slidably arranged at its bottom, and the two legs 2 can slide relative to each other. A driving mechanism 4 is arranged in the chassis 3, and two opposite pulling members 41 are arranged on the driving mechanism 4. When the chassis 3 moves between the two legs 2 of the cargo hold 1, the driving mechanism 4 can drive the two pulling members 41 to be respectively connected to the two legs 2 of the cargo hold 1 and move closer to each other, so as to pull the two legs 2 to slide and retract to both sides of the chassis 3 respectively, thereby reducing the overall width of the distribution device and improving the convenience of use of the distribution device.

[0073] In an optional embodiment, referring to Figure 4 、 Figure 7 and Figure 8 , the leg 2 may include a leg body 21 and a positioning member 22 connected to the leg body 21. The leg 2 is slidably connected to the bottom of the cargo hold 1 through the positioning member 22, and through holes are provided on the positioning member 22; when the chassis 3 moves between the two leg bodies 21, the two pulling members 41 can be respectively inserted into the through holes of the two positioning members 22, and the driving mechanism 4 can drive the two pulling members 41 to respectively abut against the inner walls of the two through holes and move closer to each other, so as to pull the two positioning members 22 to drive the two leg bodies 21 to slide and retract to both sides of the chassis 3 respectively.

[0074] In the above embodiment, the two positioning members 22 are located at the bottom of the cargo hold 1, and the two leg bodies 21 are located on both sides of the cargo hold 1. Among them, the positioning member 22 may be a positioning plate, and a slide rail 221 may be provided on the positioning member 22, and a slider 222 is slidably arranged on the slide rail 221. The slider 222 is connected to the bottom of the cargo hold 1, so that the positioning member 22 can drive the leg body 21 to slide relative to the cargo hold 1. Specifically, the slide rails 221 may be two arranged side by side to ensure the stability of the relative sliding of the legs 2 with respect to the cargo hold 1. Moreover, limit structures, such as baffles or stoppers, may be respectively arranged at both ends of the slide rail 221 to limit the sliding distance of the slider 222 on the slide rail 221, thereby limiting the sliding range of the two legs 2. It should be noted that the distance between the two legs 2 after being fully opened should be large enough so that the chassis 3 can smoothly enter between the two legs 2 within the movement accuracy range of the chassis 3.

[0075] According to the above embodiment, by providing through holes 227 on the positioning member 22, when the chassis 3 enters between the two leg bodies 21, the two pulling members 41 can be respectively inserted into the through holes 227 of the two positioning members 22, and the driving mechanism 4 can drive the two pulling members 41 to respectively abut against the inner walls of the two through holes 227 and move closer to each other, so that the two pulling members 41 pull the two positioning members 22 to move closer to each other, and further enable the two leg bodies 21 to slide and retract to both sides of the chassis 3 respectively, reducing the overall width of the distribution device, with a simple structure. Moreover, when one chassis 3 corresponds to multiple cargo holds 1, the cost is lower.

[0076] In an alternative embodiment, the outrigger 2 includes an outrigger body 21 and a positioning member 22 connected to the outrigger body 21. The outrigger 2 is slidably connected to the bottom of the cargo hold 1 through the positioning member 22, and a through hole 227 is provided on the positioning member 22; when the chassis 3 moves between the two outrigger bodies 21, at least one pulling member 41 corresponds to the through hole 227 of at least one positioning member 22.

[0077] In an alternative embodiment, referring to Figure 4 , Figure 5 , Figure 7 , Figure 8 and Figure 10 , a partial inner wall of the through hole 227 may be a first T-shaped wall 223 protruding towards the direction of another positioning member 22; the pulling member 41 may be a first hook body, and the width of the first hook body is adapted to the width at the corner of the first T-shaped wall 223; when the chassis 3 moves between the two outriggers 2, the first hook body corresponds to the first T-shaped wall 223, and the first hook body is used to abut against the corner of the first T-shaped wall 223 under the driving action of the driving mechanism 4 to pull the positioning member 22 to slide.

[0078] In the above embodiment, by arranging a partial inner wall of the through hole 227 as a first T-shaped wall 223 protruding towards the direction of another positioning member 22, that is, forming an approximately V-shaped opening in the through hole 227, and arranging the pulling member 41 as a first hook body, and the width of the first hook body is adapted to the width at the corner of the first T-shaped wall 223. In this way, under the driving of the driving mechanism 4, the first hook body can abut against the corner of the first T-shaped wall 223 to pull the positioning member 22 to slide. During the sliding process of the positioning member 22, the pulling member 41 is always clamped by the V-shaped opening, that is, the corner of the first T-shaped wall 223. The vertical surface 411 and the horizontal surface 412 of the first hook body are respectively in contact with the surface at the corner of the first T-shaped wall 223. This can not only reduce the resistance of the pulling member 41, but also make the relative position between the pulling member 41 and the positioning member 22 fixed, and can prevent the pulling member 41 from sliding out from below the through hole 227, so that the positioning member 22 can slide stably, and further make the two outrigger bodies 21 retract stably to both sides of the chassis 3.

[0079] In order to improve the connection stability between the cargo hold 1 and the chassis 3, in an alternative embodiment, referring to Figure 3 , Figure 4 , Figure 7 , Figure 8 and Figure 10, two engaging members 31 can be provided on the chassis 3; when the chassis 3 moves between the two leg bodies 21, the engaging member 31 can be inserted into the through hole 227, and when the two positioning members 22 slide to drive the two leg bodies 21 to retract to both sides of the chassis 3 respectively, the two engaging members 31 are respectively engaged with the through holes 227 of the two positioning members 22. By providing the engaging member 31, after the two leg bodies 21 are retracted in place, the engaging member 31 can be engaged with the through hole 227, so that the positioning member 22 can be firmly fixed on the chassis 3, thereby improving the connection stability between the cargo hold 1 and the chassis 3.

[0080] Among them, the structure of the above-mentioned engaging member 31 can be various as long as it can realize the engaging connection with the through hole 227. However, in order to further ensure that the positioning member 22 can be more firmly fixed on the chassis 3, in an alternative embodiment, refer to Figure 3 , Figure 4 , Figure 7 and Figure 8 , another part of the inner wall of the through hole 227 can be a second T-shaped wall 224 protruding in a direction away from the other positioning member 22; and the engaging member 31 can be a second hook body, and the width of the second hook body is adapted to the width at the corner of the second T-shaped wall 224; when the chassis 3 moves between the two leg bodies 21, the second hook body is inserted into the through hole 227 and corresponds to the second T-shaped wall 224, and when the positioning member 22 slides to pull the leg body 21 to retract to both sides of the chassis 3, the second hook body is engaged with the corner of the second T-shaped wall 224.

[0081] In the above embodiments, by arranging another part of the inner wall of the through hole 227 to protrude in a direction away from another positioning member 22 as a second T-shaped wall 224, that is, the second T-shaped wall 224 is opposite to the first T-shaped wall 223, namely, another approximate V-shaped opening opposite to the aforementioned V-shaped opening is formed in the through hole 227, and the pulling member 41 is arranged as a second hook body, and the width of the second hook body is adapted to the width at the corner of the second T-shaped wall 224. In this way, while the pulling member 41, i.e., the first hook body, is inserted into the through hole 227, the engaging member 31, i.e., the second hook body, is also inserted into the through hole 227, and the two respectively correspond to the approximate V-shaped openings formed by the first T-shaped wall 223 and the second T-shaped wall 224. During the process of the pulling member 41 pulling the positioning member 22 to slide, the distance between the second hook body and the corner of the second T-shaped wall 224 becomes closer and closer. After the positioning member 22 drives the two leg bodies 21 to retract in place, the second hook body just engages with the corner of the second T-shaped wall 224, further fixing the positioning member 22 on the chassis 3. And because the width at the corner of the second T-shaped wall 224 is adapted to the width of the second hook body, the vertical surface of the second hook body contacts the surface at the corner of the second T-shaped wall 224, not only with less resistance, but also making the corner of the second T-shaped wall 224 always clamp the second hook body, thereby further improving the stability of the positioning member 22 fixed on the chassis 3, and further improving the connection stability between the cargo hold 1 and the chassis 3. Among them, the number of the engaging members 31 can be four, and every two are arranged side by side at one end of the surface of the chassis 3. At this time, the width at the corner of the second T-shaped wall 224 should be adapted to the total width of the two engaging members 31.

[0082] In an alternative embodiment, Figure 4 、 Figure 5 、 Figure 6 、 Figure 8 and Figure 10 , the surface of the second hook body opposite to the chassis 3 can be a first inclined surface 311; a second inclined surface 225 adapted to the first inclined surface 311 is arranged at a position adjacent to the corner of the second T-shaped wall 224 on the positioning member 22, and the first inclined surface 311 abuts against the second inclined surface 225. When the positioning member 22 drives the two leg bodies 21 to retract in place, the second hook body engages with the corner of the second T-shaped wall 224. While the vertical surface 312 of the second hook body contacts the surface at the corner of the second T-shaped wall 224, the first inclined surface 311 and the second inclined surface 225 are in contact, so that the second hook body can more firmly hold down the positioning plate, thereby further improving the stability of the positioning member 22 fixed on the chassis 3, and further improving the connection stability between the cargo hold 1 and the chassis 3.

[0083] It should be noted that the V-shaped opening formed by the first T-shaped wall 223 and the second T-shaped wall 224 should be large enough to keep its corner width compatible with the width of the pulling member 41 and the engaging member 31, so that within the deviation range of the movement of the chassis 3, the pulling member 41 and the engaging member 31 can be inserted into the corners of the first T-shaped wall 223 and the second T-shaped wall 224 respectively.

[0084] In an alternative embodiment, see Figure 4 The dispensing device may further include an elastic member 5, which is connected between the two legs 2; the two pulling members 41 are used to overcome the elastic force of the elastic member 5 and move closer to each other under the driving action of the driving mechanism 4; the driving mechanism 4 is also used to drive the two pulling members 41 away from each other, so that the elastic member 5 recovers its deformation and spreads the two legs 2.

[0085] In the above embodiment, the elastic member 5 can be a gas spring with a relatively slow speed, small dynamic force change and easy control, so as to realize the stable retraction or expansion of the two legs 2. Specifically, the elastic member 5 can be connected between the two positioning members 22, or between the two leg bodies 21, and the specific method can be determined according to the actual situation. It should be noted that the extension length of the piston rod of the gas spring should ensure that the distance between the two leg bodies 21 after they are fully opened is large enough, so that it can smoothly enter between the two legs 2 within the accuracy range of the movement of the chassis 3. In addition, in the process of the gas spring restoring the deformation and expanding the two leg bodies 21, the pulling member 41 can always be in contact with the first T-shaped wall 223, that is, the two pulling members 41 always pull the two positioning members 22, thereby ensuring that the two leg bodies 21 can be stably expanded.

[0086] In an alternative embodiment, the driving mechanism 4 can also be used to drive the two pulling members 41 to be connected to the two legs 2 respectively and move away from each other, so as to spread the two legs 2. That is to say, in this alternative embodiment, the two legs 2 can also be driven by the driving mechanism 4 to move away from each other. Specifically, the driving mechanism 4 can drive the two pulling members 41 to move in opposite directions, so that the two pulling members 41 are respectively in contact with the through holes 227 of the two positioning members 22, and the two positioning members 22 drive the two legs 2 to separate from each other and spread the two legs 2.

[0087] In an alternative embodiment, see Figure 3 and Figure 9The chassis 3 may include a lifting platform 32 opposite to the positioning member 22, and a gap 321 extending along the sliding direction of the positioning member 22 may be provided on the lifting platform 32; a lifting mechanism 6 may also be provided in the chassis 3, and the lifting mechanism 6 is connected to the lifting platform 32, and is used to drive the lifting platform 32 to rise and lift the positioning member 22 to lift the leg body 21 off the ground, or drive the lifting platform 32 to descend and put down the positioning member 22 to put the leg body 21 on the ground; two pulling members 41 pass through the gap 321 and can move along the gap 321; when the lifting platform 32 lifts the positioning member 22, the pulling member 41 is inserted into the through hole 227, and when the lifting platform 32 puts down the positioning member 22, the pulling member 41 is separated from the through hole 227.

[0088] According to the above embodiment, the lifting mechanism 6 can drive the lifting platform 32 to perform lifting movement, so that when the chassis 3 moves between the two leg bodies 21, the lifting mechanism 6 can drive the lifting platform 32 to rise, thereby lifting the positioning member 22 to lift the leg body 21 off the ground. At this time, the pulling member 41 and the engaging member 31 are respectively inserted into the through hole 227, so that the pulling member 41 pulls the positioning member 22 to slide under the drive of the driving mechanism 4, and the engaging member 31 is engaged with the through hole 227, and the two leg bodies 21 are retracted to both sides of the chassis 3 to facilitate the chassis 3 to transport the cargo warehouse 1. After the chassis 3 transports the cargo warehouse 1 to the destination, the gas spring opens the two leg bodies 21. At this time, the lifting mechanism 6 can drive the lifting platform 32 to descend, and the pulling member 41 and the engaging member 31 are separated from the positioning member 22, thereby lowering the positioning member 22 to make the leg body 21 fall to the ground, and the chassis 3 can be withdrawn, which is more convenient to use. There may be two slits 321 arranged in a straight line on the lifting platform 32 , and the two pulling members 41 respectively pass through the two slits 321 and can move in the two slits 321 respectively.

[0089] It should be noted that, among the four engaging members 31 mentioned above, every two engaging members 31 can be arranged side by side on both sides of the outer ends of a gap 321 .

[0090] The drive mechanism 4 can have various structural forms, as long as it can drive the two pulling members 41 to move synchronously. For example, the drive mechanism 4 can be a synchronous belt drive mechanism 4 or a pull rope drive mechanism 4. In the embodiment of the present invention, see Figure 9 and Figure 11, the driving mechanism 4 may specifically include a driving member 41, two racks 42, and a gear 43 connected to the driving member 41. The two racks 42 are arranged side by side and slidably disposed on the inner surface of the lifting platform 32, and extend along the sliding direction of the positioning member 22; the gear 43 is meshed and connected between the two racks 42; two pulling members 41 are respectively disposed on the two racks 42; the two pulling members 41 and the axis of the gear 43 are located on the same straight line, and the distance between the centers of the two pulling members 41 and the axis of the gear 43 is equal; the output end of the driving member 41 is connected to the gear 43 for driving the gear 43 to rotate, so that the two racks 42 respectively drive the two pulling members 41 to move synchronously.

[0091] In the above embodiment, two guide rails 322 extending along the sliding direction of the positioning member 22 may be arranged side by side on the inner surface of the lifting platform 32, and a slider may be slidably connected to each guide rail 322, and a connecting plate 323 is connected below the slider, and the rack 42 may be fixed below the connecting plate 323. The tooth distribution direction of the rack 42 is parallel to the direction of the guide rail 322, so that the two racks 42 can respectively slide along the corresponding guide rails 322 through the sliders; and the driving member 41 may be a motor, which is fixed on the lower surface of the lifting platform 32, and the motor drives the gear 43 to rotate, thereby driving the two racks 42 to move simultaneously; the two pulling members 41 may be respectively fixed on the connecting plate 323, so that the two pulling members 41 are disposed at the ends of the corresponding racks 42 through the corresponding connecting plates 323, and moreover, the two pulling members 41 and the axis of the gear 43 may be located on the same straight line, and the distance between the centers of the two pulling members 41 and the axis of the gear 43 may be equal, so that when the gear 43 rotates to drive the two racks 42 to move synchronously, the two pulling members 41 can symmetrically approach or move away from each other centrically, so that the two pulling members 41 can better pull the two positioning members 22 to drive the two leg bodies 21 to retract; similarly, since the two pulling members 41 move symmetrically and synchronously, after the two leg bodies 21 are expanded, the chassis 3 can be located at the middle position between the two leg bodies 21, so that when the chassis 3 exits from between the two leg bodies 21, the gap between the chassis 3 and the leg bodies 21 can be large enough, so that the chassis 3 can smoothly exit from below the cargo hold 1, with simple structure and reliable use.

[0092] It should be noted that the driving mechanism 4 can drive the gear 43 to rotate forward or backward through its motor to realize the approach or separation of the two pulling members 41, and the two stop positions of the motor for forward or backward rotation can be detected by detecting the stall current or by setting a travel switch to detect and trigger.

[0093] In an alternative embodiment, refer to Figure 9, the lifting mechanism 6 may include at least one link 61 arranged obliquely. One end of the link 61 may be hinged to any one of the racks 42, and the other end is hinged inside the chassis 3. The link 61 is used to rotate along with the movement of the rack 42 to drive the lifting platform 32 to move up and down.

[0094] According to the above embodiment, by setting the lifting mechanism 6 to include at least one obliquely arranged link 61, and one end of the link 61 is hinged to the rack 42, specifically, it can be hinged to the connecting plate 323, and the other end is hinged inside the chassis 3, specifically, it can be hinged to the chassis plate of the chassis 3, so that the link 61 can rotate clockwise or counterclockwise along with the movement of the rack 42. Thus, the rotating link 61 drives the lifting platform 32 to rise or fall, realizing that the driving mechanism 4 can drive the pulling members 41 to approach or move away from each other by one motor, and at the same time, the lifting mechanism 6 can drive the lifting platform 32 to move up and down, effectively streamlining the structure of the chassis 3 and reducing the cost.

[0095] Further, in the above embodiment, the link 61 may be provided with two. One ends of the two links 61 are respectively hinged to the connecting plate 323 above the two racks 42, and the other ends are respectively on the chassis plate of the chassis 3, and the two links 61 may be arranged in a V shape or cross each other, so as to realize driving the lifting platform 32 to move up and down through the rotational movement of the two links 61, and the movement of the lifting platform 32 can be made more stable.

[0096] In an alternative embodiment, refer to Figure 9 , the lifting mechanism 6 may further include a guide shaft 62 and a linear bearing 63. The linear bearing 63 may be arranged inside the chassis 3 and extend along the movement direction of the lifting platform 32, specifically, it may be arranged on the chassis plate. One end of the guide shaft 62 is connected to the lifting platform 32, and the other end is movably arranged inside the linear bearing 63. When the lifting mechanism 6 drives the lifting platform 32 to move upward, the guide shaft 62 can perform a linear movement inside the linear bearing 63. Thus, the guide shaft 62 can play a guiding role in the lifting movement of the lifting platform 32, further improving the stability of the movement of the lifting platform 32. Specifically, the number of the linear bearing 63 and the guide shaft 62 may both be two, and they are symmetrically arranged between the lifting platform 32 and the chassis plate.

[0097] In an alternative embodiment, refer to Figure 8, a conductive member 226 may be insulatingly provided on the positioning member 22, and the conductive member 226 may be electrically connected to the power system of the cargo compartment 1; while the pulling member 41 may be electrically connected to the power supply of the chassis 3; when the positioning member 22 slides and pulls the leg body 21 to retract to both sides of the chassis 3, the pulling member 41 is in contact connection with the conductive member 226. Specifically, the conductive member 226 may be a leaf spring, and the leaf spring may be insulatingly provided at a position adjacent to the corner of the first T-shaped wall 223 on the positioning plate, so that when the pulling member 41 pulls the positioning plate in place, it can be in contact with the leaf spring to achieve electrical connection between the two, that is, to achieve electrical connection between the power system of the cargo compartment 1 and the power supply of the chassis 3, so that the chassis 3 can supply power to the cargo compartment 1, making it more convenient to use.

[0098] In an alternative embodiment, referring to Figure 4 and Figure 12 , the distribution device may further include a reflector 7, and the reflector 7 may be disposed at the bottom of the cargo compartment 1; a lidar 8, disposed in the chassis 3, for emitting laser light to the reflector 7 to determine the position of the cargo compartment 1.

[0099] In the above embodiment, the number of the reflectors 7 may be multiple, and the multiple reflectors 7 may be arranged in a zigzag pattern at the bottom of the cargo compartment 1, which can improve the reflectivity of the laser light emitted by the lidar 8, and the lidar 8 may be disposed on the chassis plate of the chassis 3 and below the lifting platform 32, so that the lidar 8 roughly determines the position of the cargo compartment 1 by emitting laser light to the reflector 7, and then moves forward to below the cargo compartment 1, facilitating the movement of the chassis 3 towards the cargo compartment 1.

[0100] In an alternative embodiment, referring to Figure 4 and Figure 12 , an anti-collision detection strip 33 may be provided at the front end of the chassis 3; a limiting block 11 is provided at the bottom of the cargo compartment 1; during the process of the chassis 3 moving between the two legs 2, when the anti-collision detection strip 33 hits the limiting block 11, the chassis 3 stops moving. When the lidar 8 roughly determines the position of the cargo compartment 1 and moves towards the cargo compartment 1 between its two leg bodies 21, when the anti-collision detection strip 33 hits the limiting block 11, the chassis 3 can stop advancing, and the movement of the chassis 3 is more accurate and convenient. Specifically, the number of the limiting blocks 11 may be multiple, and the multiple limiting blocks 11 may be alternately provided between two adjacent reflectors 7.

[0101] In an alternative embodiment, referring to Figure 10 , a polytetrafluoroethylene plate 9 may be provided on the outer surface of the lifting platform 32. By providing the polytetrafluoroethylene plate 9 on the outer surface of the lifting strip, the positioning member 22 can slide on the polytetrafluoroethylene plate 9, thereby reducing the friction between the lifting platform 32 and the positioning member 22, increasing the service life of the positioning member 22 and the lifting platform 32, and further increasing the service life of the cargo compartment 1 and the chassis 3.

[0102] In an optional embodiment, a flexible first sealing strip may be connected between the two pulling members 41. The width of the first sealing strip is greater than the width of the gap 321. When the two pulling members 41 approach each other, the first sealing strip bends. When the two pulling members 41 move away from each other, the first sealing strip extends until it seals the gap 321. Specifically, the first sealing strip may be a rubber strip. Alternatively, a flexible second sealing strip is connected between each pulling member 41 and the middle of the lifting platform 32, and the width of the second sealing strip is greater than the width of the gap 321. When the two pulling members 41 approach each other, the second sealing strip bends. When the two pulling members 41 move away from each other, the second sealing strip extends until it seals the gap 321. Specifically, the second sealing strip may be a rubber strip. Such a structural design can prevent external dust and other impurities from entering the chassis 3 through the gap 321 and damaging the chassis 3, ensuring the normal operation of the chassis 3. Among them, the first sealing strip or the second sealing strip may be provided on the inner surface of the lifting platform 32.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A distribution device, characterized in that, include: A cargo bin, wherein the bottom of the cargo bin is slidably provided with two opposing legs, and the two legs can slide relative to each other; A chassis, wherein a driving mechanism is disposed in the chassis, and two opposing pulling members are disposed on the driving mechanism, and the driving mechanism is used for driving the two pulling members to be respectively connected with the two legs and to move closer to each other when the chassis moves between the two legs; The driving mechanism is used to drive the two pulling members to be connected to the two legs respectively and move away from each other; The dispensing device also includes an elastic member connected between the two legs; the two pulling members are used to overcome the elastic force of the elastic member and move closer to each other under the driving action of the driving mechanism; the driving mechanism is also used to drive the two pulling members away from each other, so that the elastic member restores its deformation and spreads the two legs.

2. The distribution device according to claim 1, characterized in that, The leg comprises a leg body and a positioning member connected to the leg body, the leg is slidably connected to the bottom of the cargo bin via the positioning member, and the positioning member is provided with a through hole; When the chassis moves between the two leg bodies, the two pulling members can be respectively inserted into the through holes of the two positioning members, and the driving mechanism can drive the two pulling members to respectively abut against the inner walls of the two through holes and approach each other, so as to pull the two positioning members to drive the two leg bodies to slide and retract to the two sides of the chassis respectively.

3. The distribution device according to claim 1, characterized in that, The leg comprises a leg body and a positioning member connected to the leg body, the leg is slidably connected to the bottom of the cargo bin via the positioning member, and the positioning member is provided with a through hole; When the chassis moves between the two leg bodies, at least one of the pulling members corresponds to the through hole of at least one of the positioning members.

4. The distribution device according to claim 2 or 3, characterized in that, Part of the inner wall of the through hole is a first T-shaped wall protruding toward the direction of the other positioning member; The pulling member is a first hook, and the width of the first hook is adapted to the width of the corner of the first T-shaped wall; When the chassis moves between the two leg bodies, the first hook corresponds to the first T-shaped wall, and the first hook is used to abut against the corner of the first T-shaped wall under the driving action of the driving mechanism to pull the positioning member to slide.

5. The distribution device according to claim 2 or 3, characterized in that, Two engaging parts are arranged on the chassis; When the chassis moves between the two leg bodies, the engaging member can be inserted into the through hole, and when the two positioning members slide and respectively drive the two leg bodies to retract to the two sides of the chassis, the two engaging members are respectively engaged with the through holes of the two positioning members.

6. The distribution device according to claim 5, characterized in that, Another part of the inner wall of the through hole is a second T-shaped wall protruding in a direction away from the other positioning member; The engaging member is a second hook, and the width of the second hook is adapted to the width of the corner of the second T-shaped wall; When the chassis moves between the two legs, the second hook is inserted into the through hole and corresponds to the second T-shaped wall, and when the positioning member slides and pulls the leg body back to both sides of the chassis, the second hook is engaged and connected with the corner of the second T-shaped wall.

7. The distribution device according to claim 6, characterized in that, The surface of the second hook body opposite to the chassis is a first inclined surface; At a position adjacent to the corner of the second T-shaped wall on the positioning member, a second inclined surface adapted to the first inclined surface is provided, and the first inclined surface can abut against the second inclined surface.

8. The distribution device according to claim 2 or 3, characterized in that, The chassis includes a lifting platform opposite to the positioning member, and a gap extending along the sliding direction of the positioning member is provided on the lifting platform; A lifting mechanism is further provided inside the chassis. The lifting mechanism is connected to the lifting platform and is used to drive the lifting platform to rise to lift the positioning member so that the leg body leaves the ground, or drive the lifting platform to descend to lower the positioning member so that the leg body lands on the ground; The two pulling members pass through the gap and can move along the gap; When the lifting platform lifts the positioning member, the pulling member is inserted into the through hole. When the lifting platform lowers the positioning member, the pulling member disengages from the through hole.

9. The distribution device according to claim 8, characterized in that, The driving mechanism includes a driving member, two racks, and a gear connected to the driving member. The two racks are arranged side by side and slidably disposed on the inner surface of the lifting platform and extend along the sliding direction of the positioning member; the gear is meshed and connected between the two racks; The two pulling members are respectively disposed on the two racks; The two pulling members and the axis of the gear are located on the same straight line, and the distance between the centers of the two pulling members and the axis of the gear is equal; The output end of the driving member is connected to the gear and is used to drive the gear to rotate, so that the two racks respectively drive the two pulling members to move synchronously.

10. The delivery device according to claim 9, wherein The lifting mechanism includes at least one obliquely arranged connecting rod. One end of the connecting rod is hinged to any one of the racks, and the other end is hinged inside the chassis; The connecting rod is used to rotate as the rack moves to drive the lifting platform to perform lifting motion.

11. The delivery device according to claim 8, wherein The lifting mechanism further includes a guide shaft and a linear bearing; The linear bearing is disposed inside the chassis and extends along the moving direction of the lifting platform; One end of the guide shaft is connected to the lifting platform, and the other end is movably disposed inside the linear bearing; When the lifting mechanism drives the lifting platform to perform upward movement, the guide shaft performs linear movement inside the linear bearing.

12. The delivery device according to claim 2 or 3, wherein A conductive member is insulatingly disposed on the positioning member, and the conductive member is electrically connected to the power system of the cargo hold; The pulling member is electrically connected to the power supply of the chassis; When the positioning member slides to pull the leg body to retract to both sides of the chassis, the pulling member is in contact connection with the conductive member.

13. The delivery device according to claim 1, wherein Further included: A reflector, the reflector is disposed at the bottom of the cargo hold; A lidar, the lidar is disposed inside the chassis and is used to emit laser to the reflector to determine the position of the cargo hold.

14. The delivery device according to claim 1, wherein An anti-collision detection strip is provided at the front end of the chassis; A limiting block is provided at the bottom of the cargo hold; During the process of the chassis moving between the two legs, when the anti-collision detection strip hits the limiting block, the chassis stops moving.

15. The delivery device according to claim 8, wherein A polytetrafluoroethylene plate is provided on the outer surface of the lifting platform.

16. The delivery device according to claim 8, wherein A flexible first sealing strip is connected between the two pulling members, and the width of the first sealing strip is greater than the width of the gap. When the two pulling members approach each other, the first sealing strip bends, and when the two pulling members move away from each other, the first sealing strip extends until it seals the gap; or, A flexible second sealing strip is connected between each pulling member and the middle of the lifting table, and the width of the second sealing strip is greater than the width of the gap. When the two pulling members approach each other, the second sealing strip bends, and when the two pulling members move away from each other, the second sealing strip extends until it seals the gap.

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