Material frame assembly

Abstract

The utility model relates to the technical field of workshop production, in particular to a material frame assembly. The material frame assembly comprises a material frame, a tray and a self-locking mechanism, the material frame comprises a body part and a limiting structure, and the limiting structure comprises a first limiting column and a second limiting column; the tray comprises a plurality of first cross beams and a plurality of first longitudinal beams, the self-locking mechanism comprises a first self-locking mechanism and a second self-locking mechanism, the first self-locking mechanism is arranged on the first cross beams, and the second self-locking mechanism is arranged on the first longitudinal beams; the first self-locking mechanism is rotatably arranged on the first cross beam, the first self-locking mechanism is constructed to rotate under the pushing of the first limiting column so as to clamp the first limiting column with the first longitudinal beam and limit the displacement of the first limiting column in the first direction, and the second self-locking mechanism is rotatably arranged on the first longitudinal beam; and the second self-locking mechanism is constructed to rotate under the pushing of the second limiting column so as to clamp the second limiting column with the first cross beam and limit the displacement of the second limiting column in the second direction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of workshop production, in particular to a material frame assembly. BACKGROUND

[0002] The material frame assembly is needed for the part feeding of the vehicle body welding line, and the current material frame assembly is transferred by the towing hook of the tractor. This material frame assembly is not suitable for AGV automatic switching, not suitable for warehouse AGV transfer for transfer and distribution, and cannot be self-centered by the forklift AGV butt joint forking. That is, the material frame assembly cannot meet the production needs of unmanned factory production lines. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a material frame assembly, which achieves the technical effect of automatic positioning and self-locking of the material frame assembly in an unmanned production line.

[0004] In order to achieve the above purpose, the main technical scheme adopted by the present application includes:

[0005] The present application provides a material frame assembly, which includes a rack, a tray and a self-locking mechanism. The rack includes a body part and a limiting structure, the limiting structure includes a first limiting column and a second limiting column, the first limiting column and the second limiting column are both arranged on the body part and extend downward in the vertical direction. The tray is used to support the rack, and the tray includes a plurality of first cross beams and a plurality of first longitudinal beams. The first cross beams extend in the first direction, and the first longitudinal beams extend in the second direction. A plurality of first cross beams are arranged at intervals in the second direction, and a plurality of first longitudinal beams are arranged at intervals in the first direction. The first direction, the second direction and the vertical direction are perpendicular to each other. The self-locking mechanism includes a first self-locking mechanism and a second self-locking mechanism. The first self-locking mechanism is arranged on the first cross beam, and the second self-locking mechanism is arranged on the first longitudinal beam. The first self-locking mechanism is rotatably arranged on the first cross beam, and is configured to rotate under the pushing of the first limiting column to clamp the first limiting column with the first longitudinal beam and limit the displacement of the first limiting column in the first direction. The second self-locking mechanism is rotatably arranged on the first longitudinal beam, and is configured to rotate under the pushing of the second limiting column to clamp the second limiting column with the first cross beam and limit the displacement of the second limiting column in the second direction.

[0006] The material frame assembly provided by the embodiments of the present application can realize self-positioning of the material frame assembly, and can be moved downward under the action of gravity and locked by the self-locking mechanism, thereby improving the positioning accuracy of the material frame assembly and further improving the precision of unmanned material grabbing.

[0007] Optionally, the first self-locking mechanism comprises a first part and a second part connected to each other, the extension direction of the first part is arranged at an angle with the extension direction of the second part, the first part is adapted to abut against the lower end of the first limiting column, and the free end of the second part in the extension direction thereof is adapted to clamp the first limiting column with the first longitudinal beam; and the second self-locking mechanism comprises a third part and a fourth part connected to each other, the extension direction of the third part is arranged at an angle with the extension direction of the fourth part, the third part is adapted to abut against the lower end of the second limiting column, and the free end of the fourth part in the extension direction thereof is adapted to clamp the second limiting column with the first transverse beam.

[0008] When the material rack needs to be installed on the tray, the material rack is moved downward under the action of gravity, the first limiting column abuts against the first part, the first self-locking mechanism is rotated under the pushing of the first limiting column, the free end of the second part in the extension direction thereof clamps the first limiting column together with the first longitudinal beam, thereby limiting the first limiting column in the first direction. The second limiting column abuts against the third part, the second self-locking mechanism is rotated under the pushing of the second limiting column, the free end of the fourth part in the extension direction thereof clamps the second limiting column together with the first transverse beam, thereby limiting the second limiting column in the second direction.

[0009] Optionally, the size of the first part in the extension direction thereof is greater than the size of the second part in the extension direction thereof, and the size of the third part in the extension direction thereof is greater than the size of the fourth part in the extension direction thereof.

[0010] The size of the first part in the extension direction is greater than the size of the second part in the extension direction, when the first limiting column moves downward, the first limiting column can be limited, at the same time, the interference of the second part to the first limiting column is reduced, the first limiting column can easily abut against the first part, and drive the first self-locking mechanism to rotate, so that the first self-locking mechanism clamps the first limiting column with the first longitudinal beam. The size of the third part in the extension direction is greater than the size of the fourth part in the extension direction, when the second limiting column moves downward, the second limiting column can be limited, at the same time, the interference of the fourth part to the second limiting column is reduced, the second limiting column can easily abut against the third part, and drive the second self-locking mechanism to rotate, so that the second self-locking mechanism clamps the second limiting column with the first transverse beam.

[0011] Optionally, the free end of the second part in the extension direction is provided with a first compression bearing, and the free end of the fourth part in the extension direction is provided with a second compression bearing.

[0012] When the rack needs to be installed on the tray, the rack moves downward under the action of gravity, the first limiting column abuts against the first part, the first part drives the second part and the first compression bearing to rotate, so that the first compression bearing clamps the first limiting column with the first longitudinal beam, and the first limiting column is limited in the first direction. The second limiting column abuts against the third part, the third part drives the fourth part and the second compression bearing to rotate, so that the second compression bearing clamps the second limiting column with the first transverse beam, and the second limiting column is limited in the second direction.

[0013] Optionally, the self-locking mechanism further comprises a first elastic member, the first elastic member is connected with the first self-locking mechanism and the first transverse beam respectively, and the first elastic member is configured to store energy when the first self-locking mechanism is pushed by the first limiting column, so as to provide a reset force for the first self-locking mechanism when the rack is separated from the tray; the self-locking mechanism further comprises a second elastic member, the second elastic member is connected with the second self-locking mechanism and the first longitudinal beam respectively, and the second elastic member is configured to store energy when the second self-locking mechanism is pushed by the second limiting column, so as to provide a reset force for the second self-locking mechanism when the rack is separated from the tray.

[0014] When the rack moves downward under the action of gravity, the first limiting column pushes the first self-locking mechanism to rotate, and the first self-locking mechanism compresses the first elastic member; the second limiting column pushes the second self-locking mechanism to rotate, and the second self-locking mechanism compresses the second elastic member. When the rack is separated from the tray, the rack moves upward, the first elastic member drives the first self-locking mechanism to reset, and the second elastic member drives the second self-locking mechanism to reset.

[0015] Optionally, the first cross beam is provided with a first pin shaft, which is selectively matched with the first self-locking mechanism to limit the rotation range of the first self-locking mechanism; the first longitudinal beam is provided with a second pin shaft, which is selectively matched with the second self-locking mechanism to limit the rotation range of the second self-locking mechanism.

[0016] The first pin shaft can reduce the probability of the first self-locking mechanism losing the limiting effect due to excessive rotation, and the second pin shaft can reduce the probability of the second self-locking mechanism losing the limiting effect due to excessive rotation.

[0017] Optionally, the tray is further provided with a first guide between the first self-locking mechanism and the second self-locking mechanism, and the first limiting column and the second limiting column are spaced apart to form a first limiting groove matched with the first guide.

[0018] When the rack is moved downward to be installed on the tray, the first limiting column and the second limiting column are respectively located on both sides of the first guide, and the first guide guides the first limiting column and the second limiting column. When the rack is installed on the tray, the first guide supports the rack.

[0019] Optionally, the thickness of the first guide gradually increases in the direction from top to bottom. In the direction from top to bottom, the first guide is configured to have a slope structure, so that the thickness of the first guide gradually increases, thereby gradually improving the guiding accuracy of the first limiting column and the second limiting column.

[0020] Optionally, the limiting structure and the self-locking mechanism are both multiple, the multiple limiting structures are spaced apart on the body part, and the multiple self-locking mechanisms are spaced apart on the tray. Each limiting structure is matched with a corresponding self-locking mechanism. When the rack is moved downward to be installed on the tray, each limiting structure is matched with a corresponding self-locking mechanism, thereby improving the installation accuracy of the rack on the tray.

[0021] Optionally, the tray further comprises a frame, the frame is configured as an annular structure, and the frame surrounds the multiple first cross beams and the multiple first longitudinal beams; the rack further comprises a second guide, the second guide is multiple and is spaced apart on the frame, and each second guide is provided with a wedge surface matched with the body part. When the rack is moved downward to be installed on the tray, each second guide is matched with the body part of the tray, thereby guiding the installation of the rack and improving the installation accuracy of the rack.

[0022] Optionally, the material frame assembly further comprises a connecting assembly, the connecting assembly comprises a clamping plate fixedly arranged on the first cross beam, the clamping plate has a guide groove extending along the second direction. The guide groove is used for accommodating the telescopic pin of the towing AGV, and the telescopic pin of the towing AGV extends into the guide groove to drive the AGV to move.

[0023] Optionally, the guide groove comprises a first section and a second section connected in sequence, the size of the first section in the second direction gradually decreases, and the second section is away from the opening of the guide groove compared with the first section. The first section of the guide groove gradually narrows, which plays a guiding role on the telescopic pin of the towing AGV, improves the docking accuracy of the telescopic pin of the towing AGV and the AGV, drives the AGV to move, and realizes the quick automatic hitching of the towing AGV and the AGV.

[0024] Optionally, the connecting assembly further comprises a stop plate, along the second direction, the stop plate has a third end and a fourth end, the third end is rotatably arranged on the clamping plate through a third shaft, and the fourth end is provided with a fourth shaft, along the first direction, the size of the fourth shaft is greater than the size of the second section.

[0025] When the telescopic pin of the towing AGV is located in the second section of the guide groove, the fourth end of the stop plate abuts against the telescopic pin, which limits the position of the fixed telescopic pin in the guide groove and improves the connection stability between the towing AGV and the AGV. The fourth end of the stop plate is provided with a fourth shaft, along the first direction, the size of the fourth shaft is greater than the size of the second section, which limits the rotation angle of the stop plate and reduces the probability that the stop plate passes through the second section and causes the stop plate to lose the function of limiting the telescopic pin. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0027] Figure 1 It is a structural schematic diagram of the material frame assembly in the present application;

[0028] Figure 2 It is a structural schematic diagram of the material frame in the present application;

[0029] Figure 3 It is a structural schematic diagram of the tray in the present application;

[0030] Figure 4 It is a local structural schematic diagram of the present application;

[0031] Figure 5 A schematic view of a local structure of the present application;

[0032] Figure 6 A schematic view of a structure of a connecting assembly in the present application.

[0033]

Explanation of reference numerals

[0034] 1: rack; 11: body part; 12: limiting structure; 121: first limiting column; 122: second limiting column; 13: second guide; 14: limiting sleeve; 15: forklift groove;

[0035] 2: tray; 21: first cross beam; 22: first longitudinal beam; 23: frame; 24: limiting guide plate; 25: positioning plate; 26: in-place detection block;

[0036] 3: self-locking mechanism; 31: first self-locking mechanism; 311: first part; 312: second part; 313: first compression bearing; 314: first elastic member; 315: first pin shaft; 32: second self-locking mechanism; 321: third part; 322: fourth part; 323: second compression bearing; 324: second elastic member; 325: second pin shaft; 33: first guide;

[0037] 4: connecting assembly; 41: clamping plate; 411: first end; 412: second end; 413: guide groove; 414: first section; 415: second section; 42: stop plate; 421: third end; 422: fourth end; 423: fourth shaft;

[0038] A: vertical direction; B: first direction; C: second direction. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0040] Unless otherwise defined, all technical and scientific terms used in the present application have the same meanings as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the description and claims of the present application as well as the above abstract are not intended to limit the present application to any particular embodiment. The singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. The terms "includes" and "comprising," and variations thereof, as used in the specification and claims of this application, are intended to cover a non-exclusive inclusion. The terms "first," "second," and the like in the description do not necessarily imply that there are two or more of these objects, but can be used to designate the different characteristics or names of an object.

[0041] Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments. It is expressly understood that the embodiments described herein are merely examples from among a great variety of embodiments that might be made by a person of ordinary skill in the art having the benefit of the benefit of this disclosure.

[0042] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "attachment" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] The term "and / or" in the present application is only a description of the association relationship between the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0044] "Multiple" appearing in the present application refers to two or more (including two), and similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0045] The parts of the body welding line need to use the material frame assembly, and the current material frame assembly is transported by a tractor. This material frame assembly does not have a self-positioning self-locking mechanism, so it is not suitable for AGV automatic switching, nor is it suitable for warehouse AGV transfer for transfer distribution, nor can it be forked by a forklift AGV and automatically centered. That is, the material frame assembly cannot meet the production needs of the black light factory unmanned production line.

[0046] In view of this, referenceFigures 1 to 3 The embodiment of the present application provides a material frame assembly, which comprises a material rack 1, a tray 2 and a self-locking mechanism 3. The material rack 1 comprises a body part 11 and a limiting structure 12. The limiting structure 12 comprises a first limiting column 121 and a second limiting column 122. The first limiting column 121 and the second limiting column 122 are arranged on the body part 11 and extend downward along a vertical direction A. The tray 2 is used for supporting the material rack 1. The tray 2 comprises a plurality of first cross beams 21 and a plurality of first longitudinal beams 22. The first cross beams 21 extend along a first direction B. The first longitudinal beams 22 extend along a second direction C. The first direction B, the second direction C and the vertical direction A are perpendicular to each other in pairs. The self-locking mechanism 3 comprises a first self-locking mechanism 31 and a second self-locking mechanism 32. The first self-locking mechanism 31 is arranged on the first cross beam 21. The second self-locking mechanism 32 is arranged on the first longitudinal beam 22. The first self-locking mechanism 31 is rotatably arranged on the first cross beam 21. The first self-locking mechanism 31 is configured to rotate under the pushing of the first limiting column 121, so as to clamp the first limiting column 121 and the first longitudinal beam 22 and limit the displacement of the first limiting column 121 in the first direction B. The second self-locking mechanism 32 is rotatably arranged on the first longitudinal beam 22. The second self-locking mechanism 32 is configured to rotate under the pushing of the second limiting column 122, so as to clamp the second limiting column 122 and the first cross beam 21 and limit the displacement of the second limiting column 122 in the second direction C.

[0047] Specifically, the material rack 1 comprises the body part 11 and the first limiting column 121 and the second limiting column 122 arranged on the body part 11 and extending downward along the vertical direction A. The first limiting column 121 and the second limiting column 122 are arranged at intervals. The plurality of first cross beams 21 are arranged at intervals along the second direction C. The plurality of first longitudinal beams 22 are arranged at intervals along the first direction B. The first self-locking mechanism 31 is arranged on the first cross beam 21 and defines a first limiting space with the first longitudinal beam 22. The first limiting column 121 is suitable for being clamped in the first limiting space, so as to limit the first limiting column 121 in the first direction B. The second self-locking mechanism 32 is arranged on the first longitudinal beam 22 and defines a second limiting space with the first cross beam 21. The second limiting column 122 is suitable for being clamped in the second limiting space, so as to limit the second limiting column 122 in the second direction C.

[0048] The material frame assembly provided by the embodiments of the present application, when the material rack 1 needs to be installed on the tray 2, the material rack 1 moves downward under the action of gravity, the first limiting column 121 abuts against the first self-locking mechanism 31, the first self-locking mechanism 31 rotates and clamps the first limiting column 121 with the first longitudinal beam 22, thereby limiting the position of the first limiting column 121 in the first direction B; the second limiting column 122 abuts against the second self-locking mechanism 32, the second self-locking mechanism 32 rotates and clamps the second limiting column 122 with the first transverse beam 21, thereby limiting the position of the second limiting column 122 in the second direction C, so as to realize self-positioning of the material frame assembly, and the material frame assembly moves downward under the action of gravity and is locked by the self-locking mechanism, thereby improving the positioning accuracy of the material frame assembly and further improving the precision of unmanned material grabbing.

[0049] Optionally, with reference to Figures 3 to 5 , the first self-locking mechanism 31 comprises a first part 311 and a second part 312 connected with each other, the extension direction of the first part 311 is arranged at an angle with the extension direction of the second part 312, the first part 311 is adapted to abut against the lower end of the first limiting column 121, and the free end of the second part 312 in the extension direction thereof is adapted to clamp the first limiting column 121 with the first longitudinal beam 22; the second self-locking mechanism 32 comprises a third part 321 and a fourth part 322 connected with each other, the extension direction of the third part 321 is arranged at an angle with the extension direction of the fourth part 322, the third part 321 is adapted to abut against the lower end of the second limiting column 122, and the free end of the fourth part 322 in the extension direction thereof is adapted to clamp the second limiting column 122 with the first transverse beam 21.

[0050] When the material rack 1 needs to be installed on the tray 2, the material rack 1 moves downward under the action of gravity, the first limiting column 121 abuts against the first part 311, the first self-locking mechanism 31 rotates under the pushing of the first limiting column 121, so that the free end of the second part 312 in the extension direction thereof clamps the first limiting column 121 with the first longitudinal beam 22, thereby limiting the first limiting column 121 in the first direction B. The second limiting column 122 abuts against the third part 321, the second self-locking mechanism 32 rotates under the pushing of the second limiting column 122, so that the free end of the fourth part 322 in the extension direction thereof clamps the second limiting column 122 with the first transverse beam 21, thereby limiting the second limiting column 122 in the second direction C.

[0051] In one embodiment, the first self-locking mechanism 31 is rotatably connected to the first cross beam 21, and the first self-locking mechanism 31 comprises a first part 311, a second part 312, and a first body part 11 connected between the first part 311 and the second part 312. That is, the first part 311 and the second part 312 extend outwardly from the first body part 11, and the extending directions of the first part 311 and the second part 312 are at an angle. The first cross beam 21 is provided with a first shaft, and the first body part 11 is rotatably connected to the first shaft. The second self-locking mechanism 32 is rotatably connected to the first longitudinal beam 22, and the second self-locking mechanism 32 comprises a third part 321, a fourth part 322, and a second body part 11 connected between the third part 321 and the fourth part 322. That is, the third part 321 and the fourth part 322 extend outwardly from the second body part 11, and the extending directions of the third part 321 and the fourth part 322 are at an angle. The first longitudinal beam 22 is provided with a second shaft, and the second body part 11 is rotatably connected to the second shaft.

[0052] When the rack 1 needs to be installed on the tray 2, the rack 1 moves downward under the action of gravity, the first limiting column 121 abuts against the first part 311, the first part 311 rotates, the first part 311 drives the first body part 11 and the second part 312 to rotate, and as the displacement of the downward movement of the rack 1 increases, the angle of rotation of the second part 312 driven by the first part 311 increases, so that the clamping force of the free end of the second part 312 clamping the first limiting column 121 increases, thereby limiting the first limiting column 121 in the first direction B. The second limiting column 122 abuts against the third part 321, the third part 321 rotates, the third part 321 drives the second body part 11 and the fourth part 322 to rotate, and as the displacement of the downward movement of the rack 1 increases, the angle of rotation of the fourth part 322 driven by the third part 321 increases, so that the clamping force of the free end of the fourth part 322 clamping the second limiting column 122 increases, thereby limiting the second limiting column 122 in the second direction C.

[0053] It should be understood that the greater the weight of the rack 1, the greater the pressure on the first part 311 and the third part 321 when the rack 1 is installed on the tray 2, so that the clamping force of the second part 312 on the first limiting column 121 is greater, and the clamping force of the fourth part 322 on the second limiting column 122 is also greater.

[0054] Optionally, the size of the first part 311 in its extending direction is greater than the size of the second part 312 in its extending direction, and the size of the third part 321 in its extending direction is greater than the size of the fourth part 322 in its extending direction.

[0055] The size of the first part 311 in its extending direction is greater than the size of the second part 312 in its extending direction, that is, along the vertical direction A, the projection of the second part 312 is located within the projection of the second part 312. When the first limiting column 121 moves downward, the first limiting column 121 can be limited while reducing the interference of the second part 312 with the first limiting column 121, so that the first limiting column 121 can easily abut against the first part 311 and drive the first self-locking mechanism 31 to rotate, so that the first self-locking mechanism 31 clamps the first limiting column 121 with the first longitudinal beam 22.

[0056] The size of the third part 321 in its extending direction is greater than the size of the fourth part 322 in its extending direction, that is, along the vertical direction A, the projection of the fourth part 322 is located within the projection of the third part 321. When the second limiting column 122 moves downward, the second limiting column 122 can be limited while reducing the interference of the fourth part 322 with the second limiting column 122, so that the second limiting column 122 can easily abut against the third part 321 and drive the second self-locking mechanism 32 to rotate, so that the second self-locking mechanism 32 clamps the second limiting column 122 with the first cross beam 21.

[0057] Optionally, referring to Figures 3 to 5 , the free end of the second part 312 in its extending direction is provided with a first compression bearing 313, and the free end of the fourth part 322 in its extending direction is provided with a second compression bearing 323.

[0058] When the rack 1 needs to be installed on the tray 2, the rack 1 moves downward under the action of gravity, the first limiting column 121 abuts against the first part 311, the first self-locking mechanism 31 rotates under the pushing of the first limiting column 121, the first part 311 drives the second part 312 and the first compression bearing 313 to rotate, so that the first compression bearing 313 clamps the first limiting column 121 with the first longitudinal beam 22, and limits the first limiting column 121 in the first direction B. As the rack 1 continues to move downward, the angle of rotation of the first part 311 driving the second part 312 and the first compression bearing 313 increases, the clamping force of the first compression bearing 313 on the first limiting column 121 increases, further improving the limiting stability of the first self-locking mechanism 31 and the first longitudinal beam 22 on the rack 1.

[0059] When the shelf 1 needs to be installed on the tray 2, the shelf 1 moves downward under the action of gravity, the second limiting column 122 abuts against the third part 321, the second self-locking mechanism 32 rotates under the pushing of the second limiting column 122, the third part 321 drives the fourth part 322 and the second compression bearing 323 to rotate, so that the second compression bearing 323 clamps the first cross beam 21 together to clamp the second limiting column 122, and the second limiting column 122 is limited in the second direction C. As the shelf 1 continues to move downward, the angle at which the third part 321 drives the fourth part 322 and the second compression bearing 323 to rotate increases, the clamping force of the second compression bearing 323 on the second limiting column 122 increases, and the limiting stability of the second self-locking mechanism 32 and the first cross beam 21 on the shelf 1 is further improved.

[0060] Optionally, referring to Figures 3 to 5 , the self-locking mechanism 3 further comprises a first elastic member 314, the first elastic member 314 is connected with the first self-locking mechanism 31 and the first cross beam 21 respectively, and the first elastic member 314 is configured to store energy when the first self-locking mechanism 31 is pushed by the first limiting column 121, so as to provide a reset force for the first self-locking mechanism 31 when the shelf 1 is separated from the tray 2; the self-locking mechanism 3 further comprises a second elastic member 324, the second elastic member 324 is connected with the second self-locking mechanism 32 and the first longitudinal beam 22 respectively, and the second elastic member 324 is configured to store energy when the second self-locking mechanism 32 is pushed by the second limiting column 122, so as to provide a reset force for the second self-locking mechanism 32 when the shelf 1 is separated from the tray 2.

[0061] When the shelf 1 moves downward under the action of gravity, the first limiting column 121 pushes the first self-locking mechanism 31 to rotate, and the first self-locking mechanism 31 compresses the first elastic member 314; the second limiting column 122 pushes the second self-locking mechanism 32 to rotate, and the second self-locking mechanism 32 compresses the second elastic member 324. When the shelf 1 is separated from the tray 2, the first elastic member 314 drives the first self-locking mechanism 31 to reset, and the second elastic member 324 drives the second self-locking mechanism 32 to reset.

[0062] In one embodiment, the first elastic member 314 and the second elastic member 324 are torsion springs, one end of the first elastic member 314 is fixed to the first cross beam 21, and the other end of the first elastic member 314 is fixed to the first part 311. One end of the second elastic member 324 is fixed to the first longitudinal beam 22, and the other end of the first elastic member 314 is fixed to the third part 321. When the rack 1 moves downward under the action of gravity, the first limiting column 121 pushes the first part 311 to rotate, the first part 311 presses downward on the first elastic member 314, and the first elastic member 314 stores energy; the second limiting column 122 pushes the third part 321 to rotate, the third part 321 presses on the second elastic member 324, and the second elastic member 324 stores energy. When the rack 1 is separated from the tray 2, the first elastic member 314 presses the first part 311 to rotate, the first part 311 drives the second part 312 to reset; the second elastic member 324 presses the third part 321 to rotate, and the third part 321 drives the fourth part 322 to reset.

[0063] Optionally, referring to Figures 3 to 5 , the first cross beam 21 is provided with a first pin shaft 315, which is selectively matched with the first self-locking mechanism 31 to limit the rotation amplitude of the first self-locking mechanism 31; the first longitudinal beam 22 is provided with a second pin shaft 325, which is selectively matched with the second self-locking mechanism 32 to limit the rotation amplitude of the second self-locking mechanism 32.

[0064] When the rack 1 moves downward to be mounted on the tray 2, the first limiting column 121 pushes the first self-locking mechanism 31 to rotate, and when the first self-locking mechanism 31 rotates to abut against the first pin shaft 315, the first self-locking mechanism 31 stops rotating, and the first self-locking mechanism 31 clamps the first limiting column 121 with the first cross beam 21; the second limiting column 122 pushes the second self-locking mechanism 32 to rotate, and when the second self-locking mechanism 32 rotates to abut against the second pin shaft 325, the second self-locking mechanism 32 stops rotating, and the second self-locking mechanism 32 clamps the second limiting column 122 with the first longitudinal beam 22. The first pin shaft 315 can reduce the probability of the first self-locking mechanism 31 losing the limiting function due to excessive rotation, and the second pin shaft 325 can reduce the probability of the second self-locking mechanism 32 losing the limiting function due to excessive rotation.

[0065] Optionally, the tray 2 is further provided with a first guide 33 between the first self-locking mechanism 31 and the second self-locking mechanism 32, and the first limiting column 121 and the second limiting column 122 are spaced apart to form a first limiting groove matched with the first guide 33.

[0066] When the rack 1 moves downward to be installed on the tray 2, the first limiting column 121 and the second limiting column 122 are respectively located at two sides of the first guide 33, and the first guide 33 guides the first limiting column 121 and the second limiting column 122. When the rack 1 is installed on the tray 2, the first guide 33 supports the rack 1.

[0067] Optionally, referring to Figure 3 , along the direction from top to bottom, the thickness of the first guide 33 gradually increases. Along the direction from top to bottom, the first guide 33 is configured to have a slope structure, so that the thickness of the first guide 33 gradually increases, thereby gradually improving the guiding accuracy of the first limiting column 121 and the second limiting column 122.

[0068] Optionally, referring to Figure 3 , the limiting structure 12 and the self-locking mechanism 3 are both multiple, the multiple limiting structures 12 are arranged at intervals on the body part 11, and the multiple self-locking mechanisms 3 are arranged at intervals on the tray 2. Each limiting structure 12 cooperates with the corresponding self-locking mechanism 3. When the rack 1 moves downward to be installed on the tray 2, each limiting structure 12 cooperates with the corresponding self-locking mechanism 3, thereby improving the installation accuracy of the rack 1 on the tray 2.

[0069] When the rack 1 is placed on the tray 2, the limiting structure 12 presses the self-locking mechanism 3, and the self-locking mechanism 3 is flipped, thereby realizing the compression of the limiting structure 12. The heavier the rack 1 is, the greater the pressure on the self-locking mechanism 3 is, and thereby the compression force of the limiting structure 12 of the self-locking mechanism 3 is also greater.

[0070] In one specific embodiment, the self-locking mechanism 3 is designed to have four, each of which can realize the gravity centering self-locking of the rack 1 in two directions, so as to confirm the repeated accuracy of the rack 1 switching on the tray 2 each time, and realize the positioning accuracy requirement of the visual guidance grabbing piece.

[0071] It should be understood that each self-locking mechanism 3 includes a first self-locking mechanism 31, a first pin shaft 315 and a first elastic member 314, a second self-locking mechanism 32, a second pin shaft 325 and a second elastic member 324, and a first guide 33. When the first guide 33 guides the first limiting column 121 of the rack 1 to press against the first part 311 to rotate, the first part 311 drives the second part 312 and the first compression bearing 313 to rotate. With the continuous downward movement of the rack 1, the first compression bearing 313 and the first cross beam 21 clamp the first limiting column 121, the first pin shaft 315 limits the rotation angle of the first self-locking mechanism 31, and the first elastic member 314 stores energy for the first self-locking mechanism 31. When the rack 1 leaves the tray 2, the first elastic member 314 resets the first self-locking mechanism 31. When the first guide 33 guides the second limiting column 122 of the rack 1 to press against the third part 321 to rotate, the third part 321 drives the fourth part 322 and the second compression bearing 323 to rotate. With the continuous downward movement of the rack 1, the second compression bearing 323 and the first longitudinal beam 22 clamp the second limiting column 122, the second pin shaft 325 limits the rotation angle of the second self-locking mechanism 32, and the second elastic member 324 stores energy for the second self-locking mechanism 32. When the rack 1 leaves the tray 2, the second elastic member 324 resets the second self-locking mechanism 32.

[0072] Optionally, referring to Figure 3 , the tray 2 further includes a frame 23, the frame 23 is configured as an annular structure, the frame 23 surrounds the plurality of first cross beams 21 and the plurality of first longitudinal beams 22; the rack 1 further includes a plurality of second guides 13, the plurality of second guides 13 are arranged at intervals on the frame 23, and each second guide 13 is provided with a wedge surface matched with the body part 11. The wedge surface of each second guide 13 faces the inner side of the tray 2. When the rack 1 moves downward to be installed on the tray 2, each second guide 13 is matched with the body part 11 of the tray 2 to guide the installation of the rack 1, thereby improving the installation precision of the rack 1.

[0073] When the rack 1 moves downward and is installed on the tray 2, the second guide 13 guides the frame 23, and as the rack 1 continues to move, each limiting structure 12 moves towards the corresponding self-locking mechanism 3, the first limiting column 121 and the second limiting column 122 are guided by the first guide 33, so that the first limiting column 121 abuts against the first part 311 of the first self-locking mechanism 31, and the second limiting column 122 abuts against the third part 321 of the second self-locking mechanism 32. The rack 1 continues to move downward under the action of gravity, the first limiting column 121 pushes the first part 311 to rotate, the first part 311 drives the second part 312 and the first compression bearing 313 to rotate, the first part 311 abuts against the first elastic member 314 to store energy, and as the rack 1 continues to move, the first compression bearing 313 clamps the first limiting column 121 in the first direction B with the first longitudinal beam 22, so as to limit the first limiting column 121; the second limiting column 122 pushes the third part 321 to rotate, the third part 321 drives the fourth part 322 and the second compression bearing 323 to rotate, the third part 321 abuts against the second elastic member 324 to store energy, and as the rack 1 continues to move, the second compression bearing 323 clamps the second limiting column 122 in the second direction C with the first transverse beam 21, so as to limit the second limiting column 122. The plurality of self-locking mechanisms 3 clamp the corresponding limiting mechanisms at the same time, so that the rack 1 is accurately positioned on the tray 2 and remains stable.

[0074] Optionally, referring to Figure 6 , the rack assembly further comprises a connecting assembly 4, and the connecting assembly 4 comprises a clamping plate 41 fixedly arranged on the first transverse beam 21. The clamping plate 41 has a guide groove 413 extending in the second direction C. The clamping plate 41 has a first end 411 and a second end 412, the guide groove 413 extends in the second direction C, that is, the guide groove 413 extends from the first end 411 to the second end 412, and the guide groove 413 has an opening arranged at the first end 411. The guide groove 413 is used for accommodating a telescopic pin of a towing AGV vehicle, and the telescopic pin of the towing AGV vehicle enters the opening of the guide groove 413 and moves towards the second end 412 to drive the AGV vehicle to move.

[0075] Optionally, the guide groove 413 comprises a first section 414 and a second section 415 connected in sequence, the first section 414 gradually decreases in size in the second direction C, and the second section 415 is farther away from the opening of the guide groove 413 than the first section 414. The first section 414 of the guide groove 413 gradually narrows, which guides the telescopic pin of the towing AGV vehicle and improves the docking accuracy of the telescopic pin of the towing AGV vehicle with the AGV vehicle, drives the AGV vehicle to move, and realizes the quick and automatic hitching of the towing AGV vehicle with the AGV vehicle.

[0076] Optionally, the connecting assembly 4 further comprises a stop plate 42, the stop plate 42 has a third end 421 and a fourth end 422 along the second direction C, the third end 421 is rotatably arranged on the clamping plate 41 through a third shaft, and the fourth end 422 is provided with a fourth shaft 423, the fourth shaft 423 has a size greater than that of the second section 415 along the first direction B.

[0077] The third end 421 of the stop plate 42 is rotatably arranged on the clamping plate 41 close to the opening of the guide groove 413 along the second direction C, when the telescopic pin of the towing AGV dolly is located in the second section 415 of the guide groove 413, the fourth end 422 of the stop plate 42 abuts against the telescopic pin, limiting the position of the fixed telescopic pin in the guide groove 413, improving the connection stability between the towing AGV dolly and the AGV dolly. The fourth end 422 of the stop plate 42 is provided with a fourth shaft 423, the fourth shaft 423 has a size greater than that of the second section 415 along the first direction B, limiting the rotation angle of the stop plate 42, reducing the probability that the stop plate 42 passes through the second section 415 and causes the stop plate 42 to fail to limit the telescopic pin.

[0078] When the guide groove 413 is not engaged with the telescopic pin, the fourth shaft 423 of the stop plate 42 abuts against the clamping plate 41, when the telescopic pin enters the second section 415 from the first section 414, the telescopic pin lifts the stop plate 42, and the third end 421 of the stop plate 42 rotates relative to the clamping plate 41, when the telescopic pin is elongated to a predetermined position, the fourth end 422 of the stop plate 42 abuts against the telescopic pin, and the telescopic pin is stably kept in the second section 415.

[0079] In one specific embodiment, the lower part of the tray 2 is provided with a limiting guide plate 24, which guides and limits the towing AGV dolly when the material frame assembly is docked on the towing AGV dolly. The frame 23 of the tray 2 is provided with a positioning plate 25 extending upward along the vertical direction A to limit the material rack 1. The tray 2 is further provided with a position detection block 26 to identify the position and vehicle type of the material frame assembly. The tray 2 is further provided with an RFID identification code for vehicle identification and reconfirmation. The material rack 1 is provided with a forklift groove 15, so that the AGV forklift can fork up the material rack 1 to realize the docking and separation of the material rack 1. The material rack 1 is further provided with a limiting sleeve 14, so that adjacent two material racks 1 can be clamped through the limiting sleeve 14 when a plurality of material racks 1 are stacked.

[0080] The material frame assembly in the application is transported to the material placing area for stacking and placing, the AGV forklift automatically identifies the material frame assembly and automatically forks it down, and places it on the tray 2, and the limiting structure 12 is positioned and locked by the self-locking mechanism 3. The traction AGV is opened, limited by the limiting guide plate 24 on the tray 2, and connected with the connecting assembly 4 through the telescopic pin of the traction AGV, and the material is transported to the ground positioning device, and then positioned by the ground positioning device, reaching the positioning accuracy of the visual guidance gripper, and the visual guidance gripper. After the completion of the gripping, the traction AGV pulls the material frame assembly away to the designated material area for material forklifting replacement, realizing the automatic unmanned material loading. Different vehicle models of material loading only need to replace the material frame assembly of the vehicle model, which can quickly realize the flexible automatic switching of the vehicle model material.

[0081] It should also be noted that the terms "comprising", "containing", or any other variant thereof are intended to cover non-exclusive inclusion, such that processes, methods, articles or devices that comprise a list of elements do not only include those elements, but also include other elements not explicitly listed, or other elements inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0082] Each of the embodiments in the specification is described in a progressive manner, and the same and similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the related parts can be referred to the part of the method embodiment.

[0083] The above only describes the embodiments of the application and does not limit the application. Those skilled in the art can make various modifications and changes to the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the scope of the claims of the application.

[0084] Although the embodiments of the application are described in conjunction with the drawings, those skilled in the art can make various modifications and changes without departing from the spirit and scope of the application, and such modifications and changes all fall within the scope defined by the appended claims.

Claims

1. A magazine assembly characterized by, The utility model relates to a material rack and a tray for supporting the material rack, and a self-locking mechanism for locking the material rack on the tray. The material rack comprises a body part and a limiting structure, the limiting structure comprises a first limiting column and a second limiting column, the first limiting column and the second limiting column are both arranged on the body part and extend downward in a vertical direction. The tray comprises a plurality of first cross beams and a plurality of first longitudinal beams, the first cross beams extend in a first direction, the first longitudinal beams extend in a second direction, a plurality of the first cross beams are arranged at intervals in the second direction, and a plurality of the first longitudinal beams are arranged at intervals in the first direction, the first direction, the second direction and the vertical direction are perpendicular to each other. The self-locking mechanism comprises a first self-locking mechanism and a second self-locking mechanism, the first self-locking mechanism is arranged on the first cross beam, and the second self-locking mechanism is arranged on the first longitudinal beam. The first self-locking mechanism is rotatably arranged on the first cross beam, the first self-locking mechanism is configured to rotate under the pushing of the first limiting column, so as to clamp the first limiting column with the first longitudinal beam and limit the displacement of the first limiting column in the first direction, the second self-locking mechanism is rotatably arranged on the first longitudinal beam, the second self-locking mechanism is configured to rotate under the pushing of the second limiting column, so as to clamp the second limiting column with the first cross beam and limit the displacement of the second limiting column in the second direction.

2. The pallet assembly of claim 1, wherein, The first self-locking mechanism comprises a first part and a second part connected to each other, the extension direction of the first part is arranged at an angle with the extension direction of the second part, the first part is adapted to abut against the lower end of the first limiting column, and the free end of the second part in the extension direction thereof is adapted to clamp the first limiting column with the first longitudinal beam. The second self-locking mechanism comprises a third part and a fourth part connected to each other, the extension direction of the third part is arranged at an angle with the extension direction of the fourth part, the third part is adapted to abut against the lower end of the second limiting column, and the free end of the fourth part in the extension direction thereof is adapted to clamp the second limiting column with the first cross beam.

3. The pallet assembly of claim 2, wherein, The size of the first part in the extension direction thereof is greater than the size of the second part in the extension direction thereof, and the size of the third part in the extension direction thereof is greater than the size of the fourth part in the extension direction thereof.

4. The pallet assembly of claim 2, wherein, The free end of the second part in the extension direction thereof is provided with a first compression bearing, and the free end of the fourth part in the extension direction thereof is provided with a second compression bearing.

5. The pallet assembly of claim 1, wherein, The self-locking mechanism further comprises a first elastic member connected to the first self-locking mechanism and the first cross beam respectively, the first elastic member is configured to store energy when the first self-locking mechanism is pushed by the first limiting column, so as to provide a restoring force for the first self-locking mechanism when the material rack is separated from the tray. The self-locking mechanism further comprises a second elastic member connected to the second self-locking mechanism and the first longitudinal beam respectively, the second elastic member is configured to store energy when the second self-locking mechanism is pushed by the second limiting column, so as to provide a restoring force for the second self-locking mechanism when the material rack is separated from the tray.

6. The pallet assembly of claim 1, wherein, The first cross beam is provided with a first pin shaft which is selectively matched with the first self-locking mechanism to limit the rotation range of the first self-locking mechanism. The first longitudinal beam is provided with a second pin shaft which is selectively matched with the second self-locking mechanism to limit the rotation range of the second self-locking mechanism.

7. The pallet assembly of claim 1, wherein, The tray is further provided with a first guide element between the first self-locking mechanism and the second self-locking mechanism, and the first limiting column and the second limiting column are spaced apart to form a first limiting groove matched with the first guide element.

8. The pallet assembly of claim 7, wherein, The thickness of the first guide element gradually increases in the direction from top to bottom.

9. The pallet assembly of claim 1, wherein, The limiting structure and the self-locking mechanism are both multiple, and multiple limiting structures are spaced apart on the body part, and multiple self-locking mechanisms are spaced apart on the tray, and each limiting structure is matched with a corresponding self-locking mechanism.

10. The pallet assembly of claim 1, wherein, The tray further comprises a frame which is configured as an annular structure and surrounds multiple first cross beams and multiple first longitudinal beams. The rack further comprises a second guide element which is multiple and is spaced apart on the frame, and each second guide element is provided with a wedge surface matched with the body part.

11. The pallet assembly of claim 1, wherein, The rack assembly further comprises a connecting assembly which comprises a clamping plate fixed on the first cross beam and a guide groove of the clamping plate extending in the second direction.

12. The pallet assembly of claim 11, wherein, The guide groove comprises a first section and a second section connected in sequence, the size of the first section in the second direction gradually decreases, and the second section is farther away from the opening of the guide groove than the first section.

13. The pallet assembly of claim 12, wherein, The connecting assembly further comprises a stop plate which has a third end and a fourth end in the second direction, the third end is rotationally arranged on the clamping plate through a third shaft, and the fourth end is provided with a fourth shaft, and the size of the fourth shaft in the first direction is greater than the size of the second section.

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