Material rack lock and material rack vehicle

Abstract

The embodiment of the utility model provides a material rack lock and a material rack vehicle. The material rack vehicle comprises a movable base and a side frame, wherein the bottom end of the side frame is detachably hooked to the side of the movable base. Frames of the electronic screen are sequentially arranged and limited on the movable base, and material frame locks locked with the frames are arranged on the side frames so that the electronic screen can be locked on the material frame vehicle. The material frame lock comprises a frame body assembly and a lock hook assembly, the frame body assembly is installed on the side frame, and the lock hook assembly is rotatably arranged on the frame body assembly so as to be switched between a locking state and an unlocking state, and the lock hook assembly is locked with the opening wall of the peripheral side of the lock opening. The frame body assembly can be matched with the locking opening so as to limit the freedom degree of the frame body assembly on the plane where the locking opening is located. When the material frame lock is touched by mistake, the lock hook assembly is switched to the unlocking state, but the side frame cannot be separated from the movable base under the limiting of the frame body assembly and the lock opening and the limiting of the movable base on the side frame. And the unlocking of the side frame and the movable base can be realized only by operating the unlocking of the lock hook assembly, so that the operation is simple, and the required operators are few.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling transportation equipment, in particular to a material rack lock and a material rack vehicle. Background Art

[0002] Generally speaking, for products with high requirements for external surface quality, such as electronic screen frames (hereinafter referred to as frames), in order to facilitate transportation and protect the integrity of the frame's exterior paint surface, the frames will be arranged in sequence on the racks and transported through the racks after production.

[0003] The rack is provided with a plurality of limit rubber blocks that can limit the frame to prevent the frame from moving relative to the rack. In order to facilitate the installation of the frame on the rack, the side frames of the rack are usually detachable, so that the installation space or disassembly space of the frame during installation is more flexible. Usually, the side frames are provided with rack locks that are locked with the frame, but it is inevitable that the rack locks will be accidentally touched. Therefore, the rack lock is usually provided with a telescopic pin to prevent the side frame from detaching after the rack lock is accidentally unlocked. When unlocking the rack lock, it is necessary to control the retractable pin to retract first, and operate the rack lock unlocking in the state of the retractable pin retracted. In the case that unlocking requires two steps, since the operator also has to bear the weight of the side frame, it is not easy for one operator to complete it, and other operators need to cooperate. Not only is the operation cumbersome and inefficient, but the labor cost required is also high. Utility Model Content

[0004] In view of the above problems, an embodiment of the present utility model is proposed. The purpose of the embodiment of the present utility model is to provide a rack lock that is easy to operate for locking and unlocking, and can prevent accidental unlocking and disengagement from the lock.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A rack lock, comprising:

[0007] A frame assembly mounted on the side frame of the rack vehicle; and

[0008] A lock hook assembly having a locked state in which the lock hook is locked with a wall around the lock opening and an unlocked state in which the lock hook is unlocked with the wall. The lock hook assembly is rotatably disposed on the frame assembly to switch between the locked state and the unlocked state.

[0009] The frame assembly can cooperate with the lock to limit the freedom of the frame assembly on the plane where the lock is located.

[0010] Optionally, the frame assembly can extend into the locking opening and abut against a circumferential surface of the locking opening facing the rack lock.

[0011] Optionally, the frame assembly includes:

[0012] A connecting member connected to the side frame of the rack vehicle, wherein the connecting member is provided with a rotating shaft; and

[0013] a limit group, arranged on a side of the connecting member facing away from the side frame; a lock tongue hole is provided on the limit group and the connecting member; the rotating shaft is located in the lock tongue hole; the lock hook assembly is sleeved on the rotating shaft and can rotate around the rotating shaft;

[0014] A step structure is provided on the side of the limiting group facing away from the connecting piece. The boss of the step structure can extend into the locking opening, and the step surface arranged around the boss abuts against the peripheral side surface of the locking opening.

[0015] Optionally, the limit group includes:

[0016] A fixing member and a buffer member sleeved around the fixing member;

[0017] The buffer member has a buffer surface and an abutting surface relative to each other, the abutting surface abuts against the connecting member, the fixing member extends out of the abutting surface to form the boss, the boss abuts against the abutting surface, and the circumferential abutting surface of the boss is the step surface.

[0018] Optionally, the fixing member cover is arranged on the circumference of the locking hook assembly away from the mouth wall.

[0019] Optionally, a first guide surface is provided on the circumference of the lock opening;

[0020] The limiting group includes a buffer member, and a second guide surface matching the first guide surface is provided on a side of the buffer member facing away from the connecting member;

[0021] When the locking hook assembly is in a locked state, the second guide surface is in contact with the first guide surface.

[0022] Optionally, the buffer is made of rubber.

[0023] Optionally, the locking hook assembly includes:

[0024] A lock hook is inserted into the lock bolt hole and can be rotatably sleeved on the rotating shaft, wherein one end of the lock hook away from the connecting member is a hook end, and the other end is a handle end; and

[0025] A reset member is sleeved on the rotating shaft, with one end abutting against the lock hook and the other end abutting against the connecting member. The reset member can drive the lock hook to rotate from the handle end toward the hook end.

[0026] Optionally, a guide surface inclined toward the mouth wall is provided on the side of the hook end facing away from the fixing member.

[0027] Optionally, the locking hook assembly further includes:

[0028] The anti-wear part is arranged at the center of the hook end, the anti-wear part follows the shape of the hook end, and the anti-wear part protrudes from the guide surface.

[0029] Optionally, the anti-wear part is made of metal;

[0030] The locking hook, the fixing piece and the connecting piece are all made of plastic.

[0031] Optionally, a concave slot is provided on the side of the hook end facing the mouth wall, and the first slot wall of the slot abutting the mouth wall follows the shape of the mouth wall, and the second slot wall facing away from the first slot wall is inclined downward from the edge of the first slot wall located in the slot toward the rotating shaft.

[0032] Optionally, when the locking hook assembly is in the unlocked state, there is a distance between the first groove wall and the mouth wall.

[0033] Another object of the embodiment of the present invention is to provide a rack vehicle that is easy to lock and unlock, and in which the side frame will not be separated from the mobile base when the unlocking is accidentally triggered.

[0034] To achieve this purpose, the present invention adopts the following technical solutions:

[0035] A material rack vehicle, comprising:

[0036] A movable seat, wherein a plurality of positioning posts are provided at intervals on the upper end surface, and a frame of the electronic screen is provided with positioning holes corresponding to the positioning posts one by one, and the positioning posts can extend into the positioning holes to limit the position of the frame of the electronic screen on the movable seat; and

[0037] A side frame, the bottom end of which is detachably hooked on the side of the movable base, and a plurality of rack locks are provided on the side frame at intervals, and the rack locks are locked or unlocked with the lock ports on the side of the frame of the electronic screen;

[0038] The rack lock is the rack lock mentioned above.

[0039] Optionally, at least one card slot is provided on a side surface of the movable seat, and a card shaft is provided in the card slot;

[0040] The lower end of the side frame is provided with a hook that matches the card shaft one by one. The hook is connected to the card shaft, and the frame can rotate around the contact point between the hook and the card shaft until the material rack lock is locked with the frame.

[0041] Optionally, a plurality of abutment blocks are provided at intervals at the bottom end of the side frame, and the abutment blocks abut against the side surfaces of the movable seat;

[0042] A plurality of position limiting buffer blocks capable of being inserted into and abutting against the frame are provided at intervals above the side of the side frame facing the frame.

[0043] The technical solution provided by the embodiment of the present utility model is to provide a detachable hook at the bottom end of the side frame on the side of the mobile base, so that when the side frame is hooked on the mobile base, it can only rotate along the abutment. By providing a lock hook assembly that can be rotatably provided on the frame assembly, it can switch between a locked state locked with the wall of the lock opening and an unlocked state. Unlocking can be achieved by simply rotating the lock hook assembly, which is simple to operate. In addition, the frame assembly is provided to cooperate with the lock opening to limit the freedom of the frame assembly on the plane where the lock opening is located. When the rack lock is accidentally touched and the lock hook assembly is switched to the unlocked state, since the frame assembly and the lock opening are in a coordinated state, they can be combined with the mobile base to jointly limit the position of the side frame, so that the side frame will not separate from the mobile base. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] Figures 1 and 2 A schematic structural diagram of a material rack vehicle provided in one embodiment of the present utility model;

[0046] Figure 3 A schematic structural diagram of a material rack vehicle provided by an embodiment of the present invention, wherein a side frame on one side is not installed;

[0047] Figure 4 A schematic structural diagram of a side frame provided in one embodiment of the present utility model;

[0048] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0049] Figure 6 for Figure 3 Enlarged view of point B in the middle;

[0050] Figure 7 for Figure 3 Enlarged view of point C in the middle;

[0051] Figure 8 A schematic diagram of a rack lock provided in one embodiment of the present utility model;

[0052] Figure 9 This is an exploded view of a rack lock provided in one embodiment of the present utility model.

[0053] In the picture:

[0054] 1. Material rack lock;

[0055] 10. Frame assembly; 11. Connecting member; 111. Rotating shaft; 12. Positioning assembly; 121. Fixing member; 1211. Boss; 1212. Connecting portion; 1213. Connecting column; 122. Buffer member; 1221. Avoidance groove; 1222. Second guide surface;

[0056] 20. Lock hook assembly; 21. Lock hook; 211. Hook end; 212. Handle end; 213. Slot; 214. First slot wall; 215. Second slot wall; 216. Guide surface; 22. Reset member; 23. Anti-wear member;

[0057] 100, mobile seat; 200, side frame; 300, frame;

[0058] 2. Abutment block; 3. Limiting buffer block; 4. Positioning column; 5. Positioning hole; 6. Locking mouth; 61. First guide surface; 7. Hook groove; 8. Clamping shaft; 9. Clamping hook. DETAILED DESCRIPTION

[0059] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0060] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0061] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0062] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0063] Please refer to Figure 1 As shown, the embodiment of the present application provides a rack cart that can carry the frame 300 of an electronic screen or the entire electronic screen for transport or storage. Even when loading an electronic screen, the frame 300 of the electronic screen is used to limit the position of the electronic screen on the rack cart. Therefore, the following description will use the frame 300 of the electronic screen (hereinafter referred to as the frame 300) as an example.

[0064] Please refer to Figures 1 to 4 As shown, since the frame 300 has a certain volume and weight, the frame 300 is usually installed on the rack cart by hoisting. During the installation process, sufficient installation space is required. The side frames 200 on the side of the rack cart limit the installation of the frame 300. In addition, after the frames 300 are arranged and installed on the rack cart in sequence, the side frames 200 on the rack cart parallel to the front of the frames 300 do not play a significant role in positioning the frames 300. Even if they do play a positioning role, they can only limit the frames 300 located at the front or rear of the rack cart, and have no effect on the frames 300 located in the middle of the rack cart. Based on this, the rack cart of the present application is only provided with side frames 200 on both sides of the frame 300, and the side frames 200 are detachable, which not only ensures the stable positioning of the frame 300 but also provides sufficient installation space for the frame 300.

[0065] For details, please refer to Figures 1 to 3As shown, in some embodiments of the present application, a structure of a material rack vehicle that can be implemented includes a mobile base 100 and a side frame 200 with a removable bottom end hooked on the side of the mobile base 100. A plurality of positioning posts 4 are spaced apart on the upper end surface of the mobile base 100, and a positioning hole 5 is provided on the frame 300 that corresponds one-to-one with the positioning posts 4. When the frame 300 is installed on the mobile base 100, the positioning holes 5 need to be aligned with the positioning posts 4 so that the positioning posts 4 can limit the position of the frame 300. The positioning posts 4 are spaced apart in at least two rows, and each row is spaced apart with a plurality of positioning posts 4. To compensate for manufacturing errors, one of the positioning holes 5 on the frame 300 is a circular hole, and the remaining positioning holes 5 are oblong holes. When the frame 300 is installed on the mobile base 100, as long as the circular positioning hole 5 is aligned with the positioning post 4 at the corresponding position, the remaining positioning posts 4 can be aligned with the corresponding oblong positioning holes 5 even if there is an installation error, thereby reducing the difficulty of installing the frame 300. Since the frame 300 has been installed on the movable base 100 when the side frame 200 is installed, and the side frame 200 can only be connected to the movable base 100 at the bottom, and the upper part of the side frame 200 cannot be connected to the movable base 100, the side frame 200 can easily rotate with the contact point with the base as the fulcrum under the action of gravity. Therefore, there are multiple rack locks 1 at intervals above the frame 300, and the rack locks 1 match the lock mouths 6 of the frame 300 at the corresponding positions to lock or unlock. That is to say, the lower end of the side frame 200 can be rotatably disassembled on the movable base 100, and the upper end of the side frame 200 is fixed or unlocked with the rack lock 1 installed on the movable base, which can not only further limit the frame 300 so that the frame 300 will not move relative to the rack car, but also the side frame 200 will not have relative displacement.

[0066] For further information, please refer to Figures 1 to 6 As shown, in some embodiments of the present application, the side of the movable base 100 is provided with at least one hook groove 7, and the hook groove 7 is provided with a card shaft 8. The lower end of the side frame 200 is provided with a hook 9 that matches the card shaft 8 one-to-one. The hook 9 can be hooked on the card shaft 8, and the frame 300 can be rotated around the abutment point between the hook 9 and the card shaft 8 until the material rack lock 1 is locked with the material rack lock 1. When removing the side frame 200 from the movable base 100, first control the material rack lock 1 and the frame 300 to unlock, then rotate the side frame 200 in a direction away from the frame 300, lift the side frame 200 to disengage the hook 9 from the card shaft 8, so that the side frame 200 can be removed. The operation is simple and easy to implement.

[0067] Please refer to Figures 1 to 5As shown, in some embodiments of the present application, two hook grooves 7 are provided on the side of the mobile seat 100. When the side frame 200 is engaged with the mobile seat 100, under the limit of the hook groove 7, the side frame 200 has only one degree of freedom to rotate around the clamping axis 8, thereby facilitating locking and limiting the position after unlocking, which is convenient for disassembly. Since there are two points at the bottom of the side frame 200 connected to the mobile seat 100, a material rack lock 1 is provided above the side frame 200 to form a stable triangular connection, so that the side frame 200 and one of the frames 300 installed on the mobile seat 100 are limited. In order to limit the other frames 300 as well, in some embodiments of the present application, a plurality of limit buffer blocks 3 that can be inserted into and abut against the frame 300 are provided at intervals above the side of the side frame 200. In addition to being able to limit the frame 300 with the locked frame 300, the frame 300 can also limit other frames 300 through the limiting buffer block 3, so that the frame 300 is limited by the rack trolley at the bottom and sides, ensuring that the frame 300 will not have relative displacement with the rack trolley when the rack trolley is impacted. The limiting buffer block 3 includes a limiting column and a buffer sleeve mounted on the limiting column. The limiting column extends out of the buffer sleeve. The limiting column can extend into the limiting hole corresponding to the frame 300. The frame 300 abuts against the buffer sleeve to buffer the impact force of the frame 300, thereby protecting the frame 300 from damage due to the impact. The buffer sleeve can be made of rubber material, as long as it can buffer the impact force, and this application does not make specific restrictions. Similarly, a plurality of abutment blocks 2 are spaced apart at the bottom end of the side frame 200 and abut against the surface of the movable seat 100. The abutment blocks 2 are made of the same material as the buffer sleeve, which can buffer the impact force between the side frame 200 and the movable seat 100 and ensure the service life of the side frame 200 and the movable seat 100.

[0068] Of course, a plurality of rack locks 1 may also be provided at intervals above the side frame 200 to enhance the stability among the side frame 200 , the frame 300 and the movable seat 100 .

[0069] Please refer to Figures 7 to 9As shown, in some embodiments of the present application, the rack lock 1 includes a frame assembly 10 and a lock hook assembly 20, wherein the frame assembly 10 is installed on the side frame 200, and the lock hook assembly 20 has a locked state locked with the mouth wall on the side of the lock mouth 6 and an unlocked state unlocked with the mouth wall, and the lock hook assembly 20 can be rotatably set on the frame assembly 10 to switch between the locked state and the unlocked state. When the side frame 200 is rotated along the card shaft 8 until the material rack lock 1 is fixed with the material rack lock 1, the frame assembly 10 cooperates with the lock mouth 6, and the frame assembly 10 can extend into the lock mouth 6 and abut against the circumferential surface of the lock mouth 6 facing the material rack lock 1. The side wall of the lock mouth 6 and the circumferential surface of the lock mouth 6 limit the freedom of the frame assembly 10 on the plane where the lock mouth 6 is located. Even if the material rack lock 1 is accidentally touched, the lock hook assembly 20 switches from the locked state to the unlocked state, but under the limitation of the cooperation between the frame assembly 10 and the lock mouth 6 and the cooperation limit of the hook 9 at the bottom of the side frame 200 and the card shaft 8 on the movable seat 100, the side frame 200 will not be separated from the frame 300 and the movable base. In other words, the hook 9 at the bottom of the side frame 200 cooperates with the axis 8 on the movable base 100 so that the side frame 200 only has one degree of freedom to rotate along the axis 8, but the frame assembly 10 cooperates with the lock 6 to limit the freedom of the frame assembly 10 on the plane where the lock 6 is located, so that the side frame 200 has no freedom to move. Therefore, even if the rack lock 1 is accidentally touched, causing the lock hook assembly 20 to switch from the locked state to the unlocked state, the side frame 200 will not shift relative to the frame 300 and the movable base 100, thereby avoiding the dangerous accident caused by the side frame 200 being separated from the movable base due to accidental touch. Of course, when the side frame 200 is disassembled, the lock hook assembly 20 switches to the unlocked state, and the side frame 200 is separated from the lock 6 under the action of the force applied by the operator toward the side away from the frame 300. Then, the hook 9 at the bottom of the side frame 200 is separated from the hook groove 7 to remove the side frame 200. During this process, it is only necessary to operate the lock hook assembly 20 to switch from the locked state to the unlocked state to unlock the side frame 200, the movable seat 100 and the frame 300. One operator can disassemble the side frame 200, which requires fewer operators and is quick and simple to operate.

[0070] For further information, please refer to Figures 6 to 9As shown, in some embodiments of the present application, the frame assembly 10 includes a connecting member 11 and a limiting group 12. The connecting member 11 is connected to the side frame 200 of the material rack vehicle to install the material rack lock 1 on the side frame 200. The limiting group 12 is arranged on the side of the connecting member 11 away from the side frame 200. A lock tongue hole is provided through the limiting group 12 and the connecting member 11. The connecting member 11 is provided with a rotating shaft 111, which is located in the lock tongue hole. The lock hook assembly 20 is sleeved on the rotating shaft 111 and can rotate around the rotating shaft 111 to switch between a locked state and an unlocked state. The structure is simple. A step structure is provided on the side of the limiting group 12 facing away from the connecting member 11. The boss 1211 of the step structure can extend into the lock mouth 6. The mouth wall of the lock mouth 6 can limit the position movement of the boss 1211 in the plane where the lock mouth 6 is located. The step surface surrounding the boss 1211 abuts against the peripheral side surface of the lock mouth 6 to limit the rotation of the limiting group 12, thereby realizing the cooperation between the frame assembly 10 and the lock mouth 6 and limiting the freedom of the frame assembly 10 on the plane where the lock mouth 6 is located.

[0071] Please refer to Figures 6 to 9As shown, the limiting group 12 can not only limit the position between the rack lock 1 and the lock port 6, but also buffer the impact force between the side frame 200 and the frame 300. Therefore, in some embodiments of the present application, the limiting group 12 includes a fixing member 121 and a buffer member 122 sleeved on the circumferential direction of the fixing member 121. The buffer member 122 has opposite buffer surfaces and abutting surfaces. The abutting surface abuts against the connecting member 11. The fixing member 121 extends out of the abutting surface to form a boss 1211. The boss 1211 abuts against the abutting surface. That is to say, the size of the boss 1211 is larger than the size of the lock tongue hole on the fixing member 121. Therefore, the boss 1211 can abut against the abutting surface and be limited on one side of the abutting surface away from the buffer surface. The abutting surface in the circumferential direction of the boss 1211 is a stepped surface. Thus, when the power for the side frame 200 to rotate is relatively large and the rack lock 1 is timed with the rack lock 1, an impact occurs between the side frame 200 and the frame 300. The buffer member 122 can absorb the impact force between the fixing member 121 and the frame 300 and protect the side frame 200 and the frame 300 from being damaged. The buffer member 122 includes a connecting portion 1212. The connecting portion 1212 passes through the lock tongue hole of the fixing member 121. The boss 1211 is connected to the connecting portion 1212. A plurality of connecting columns 1213 are provided at the circumferential interval of the end portion of the connecting portion 1212 located at the end of the boss 1211. A threaded hole is provided in the center of the connecting column 1213. Correspondingly, a plurality of avoiding grooves 1221 are provided on the inner circumference of the buffer member 122. The avoiding grooves 1221 are in circumferential abutment with the connecting column 1213. There is a spacing between the end portion of the connecting column 1213 away from the boss 1211 and the end portion of the connecting portion 1212 away from the boss 1211. A limiting surface for abutting against the end portion of the connecting column 1213 away from the boss 1211 is provided on the buffer member 122. The stud passes through the fixing member 121 and the buffer member 122 in sequence and is screwed onto the connecting column 1213 to connect the fixing member 121, the buffer member 122 and the connecting member 11 together, ensuring that there is no relative displacement between the three.

[0072] Please refer to Figure 9 As shown, in some embodiments of the present application, the fixing member 121 covers the circumferential direction of the lock hook assembly 20 away from the mouth wall. That is to say, the fixing member 121 is in a "冂" shape, so that the mouth wall of the lock port 6 can abut against the buffer member 122, avoiding the mouth wall of the lock port 6 from being damaged under the action of the impact force of the material truck lock.

[0073] Please refer to Figure 6 and Figure 9As shown, in some other embodiments of the present application, a first guide surface 61 is provided around the lock 6. The retaining assembly 12 includes a buffer 122 and a stud securing the buffer 122 to the connector 11. A second guide surface 1222 is provided on the side of the buffer 122 facing away from the connector 11, matching the first guide surface 61. When the hook assembly 20 is in the locked state, the second guide surface 1222 abuts against the first guide surface 61. The first guide surface 61 constrains the buffer 122, preventing it from moving or rotating parallel to the lock 6. This ensures that the frame assembly 10 and the lock 6 cooperate to limit the freedom of the frame assembly 10 in the plane of the lock 6. The first and second guide slopes are mutually mating 45-degree slopes. The abutment between the first and second guide slopes guides the buffer 122 along the direction of movement of the lock 6, ensuring better abutment and retention when the hook assembly 20 is in the locked state.

[0074] Please refer to Figure 9 As shown, in some embodiments of the present application, the lock hook assembly 20 includes a lock hook 21 and a reset member 22. The lock hook 21 is inserted into the lock bolt hole and can be rotatably sleeved on the rotating shaft 111. The end of the lock hook 21 away from the connecting member 11 is the hook end 211, and the other end is the handle end 212. The reset member 22 is sleeved on the rotating shaft 111, with one end abutting against the lock hook 21 and the other end abutting against the connecting member 11. The reset member 22 can drive the lock hook 21 to rotate from the handle end 212 toward the hook end 211. By pressing the handle end 212, a clockwise force opposite to the driving force of the handle and the reset member 22 is applied to the hook end 211, and the hook end 211 rises to disengage from the lock port 6. At this time, the lock hook assembly 20 can be unlocked, which is easy to operate. When unlocking, the reset member 22 is compressed, increasing the elastic force within it. After unlocking, when no force is applied to the handle end 212, the lock hook 21, driven by the elasticity of the reset member 22, rotates clockwise toward the hook end 211 until the lock hook 21 abuts the buffer member 122. When locking, the hook end 211 automatically rotates clockwise under the impact of the lock wall surrounding the lock opening 6 until it locks the lock opening 6 tightly. At this point, when installing the side frame 200, the operator simply engages the hook 9 at the lower end of the side frame 200 with the locking shaft 8 on the movable base 100 and then applies a rotational force to the side frame 200 toward the frame 300. The impact of the frame 300 causes the rack lock 1 on the side frame 200 to automatically lock with the lock opening 6. This makes installation and removal easy. The reset member 22 may be a torsion spring.

[0075] For further information, please refer to Figures 8 and 9As shown, in some embodiments of the present application, a guide surface 216 inclined toward the mouth wall is provided on the side of the hook end 211 facing away from the fixing member 121. When the hook end 211 abuts against the mouth wall on the side surrounding the lock mouth 6, the guide surface 216 will cause a part of the force applied by the mouth wall to the hook end 211 to be decomposed into a component force that drives the lock hook 21 to rotate clockwise around the rotating shaft 111, so that the hook end 211 locks the mouth wall, and the structure is simple.

[0076] Please refer to Figures 8 and 9 As shown, as the number of times the side wall is installed and removed increases, the guide surface 216 is subjected to different friction from the mouth wall, which will cause wear on the guide surface 216, thereby affecting the life of the rack lock 1. Therefore, in some embodiments of the present application, the lock hook assembly 20 also includes an anti-wear member 23. A mounting groove is provided in the center of the hook end 211. The anti-wear member 23 is installed in the mounting groove in accordance with the shape of the hook end 211. The portion of the anti-wear member 23 located on the guide surface 216 protrudes from the guide surface 216, so that the anti-wear member 23 rubs against the mouth wall to ensure the life of the hook end 211. The anti-wear member 23 is made of wear-resistant metal.

[0077] Please refer to Figure 9 As shown, in some embodiments of the present application, a concave slot 213 is provided on the side of the hook end 211 facing the mouth wall. The first slot wall 214 of the slot 213, which abuts the mouth wall, follows the shape of the mouth wall. That is, if the mouth wall is parallel to the vertical plane, the first slot wall 214 is also parallel to the vertical plane. The second slot wall 215, which faces away from the first slot wall 214, tilts downward from the edge of the first slot wall 214 within the slot 213 toward the rotation axis 111. The handle end 212 gradually tilts upward from the rotation axis 111. At this time, the rotation axis 111 serves as the fulcrum at the lowest end of the lock hook 21, facilitating the handle end 212 to be forced to rotate around the rotation axis 111. The slot wall of the slot 213 can better limit the mouth wall, achieving a good locking effect. Furthermore, when the lock hook assembly 20 is in the unlocked state, there is a distance between the first groove wall 214 and the mouth wall, so that the lock hook 21 can be separated from the mouth wall when the rear frame 200 moves toward the side away from the frame 300 after the trolley lock is unlocked.

[0078] In some embodiments of the present application, the locking hook 21 , the fixing member 121 , and the connecting member 11 are all made of plastic materials to reduce costs.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A rack lock, characterized in that: include: The rack assembly is installed on the side frame of the rack vehicle; as well as A lock hook assembly having a locked state in which the lock hook is locked with a wall around the lock opening and an unlocked state in which the lock hook is unlocked with the wall. The lock hook assembly is rotatably disposed on the frame assembly to switch between the locked state and the unlocked state. The frame assembly can cooperate with the lock to limit the freedom of the frame assembly on the plane where the lock is located.

2. The rack lock according to claim 1, characterized in that: The frame assembly can extend into the locking opening and abut against the circumferential surface of the locking opening facing the material rack lock.

3. The rack lock according to claim 1, characterized in that: The frame assembly includes: A connecting member connected to the side frame of the rack vehicle, wherein the connecting member is provided with a rotating shaft; and a limit group, arranged on a side of the connecting member facing away from the side frame; a lock tongue hole is provided on the limit group and the connecting member; the rotating shaft is located in the lock tongue hole; the lock hook assembly is sleeved on the rotating shaft and can rotate around the rotating shaft; A step structure is provided on the side of the limiting group facing away from the connecting piece. The boss of the step structure can extend into the locking opening, and the step surface arranged around the boss abuts against the peripheral side surface of the locking opening.

4. The rack lock according to claim 3, characterized in that: The limit group includes: A fixing member and a buffer member sleeved around the fixing member; The buffer member has a buffer surface and an abutting surface relative to each other, the abutting surface abuts against the connecting member, the fixing member extends out of the abutting surface to form the boss, the boss abuts against the abutting surface, and the circumferential abutting surface of the boss is the step surface.

5. The rack lock according to claim 4, characterized in that: The fixing member cover is arranged on the circumference of the locking hook assembly away from the mouth wall.

6. The rack lock according to claim 3, characterized in that: A first guide surface is provided on the circumference of the lock opening; The limiting group includes a buffer member, and a second guide surface matching the first guide surface is provided on a side of the buffer member facing away from the connecting member; When the locking hook assembly is in a locked state, the second guide surface is in contact with the first guide surface.

7. The rack lock according to any one of claims 4 to 6, characterized in that: The buffer component is made of rubber.

8. The rack lock according to any one of claims 4 to 6, characterized in that: The locking hook assembly comprises: A lock hook is inserted into the lock bolt hole and can be rotatably sleeved on the rotating shaft, wherein one end of the lock hook away from the connecting member is a hook end, and the other end is a handle end; and A reset member is sleeved on the rotating shaft, with one end abutting against the lock hook and the other end abutting against the connecting member. The reset member can drive the lock hook to rotate from the handle end toward the hook end.

9. The rack lock according to claim 8, characterized in that: A guide surface inclined toward the mouth wall is provided on the side of the hook end facing away from the fixing piece.

10. The rack lock according to claim 8, characterized in that: The locking hook assembly further comprises: The anti-wear part is arranged at the center of the hook end, the anti-wear part follows the shape of the hook end, and the anti-wear part protrudes from the guide surface.

11. The rack lock according to claim 10, characterized in that: The anti-wear part is made of metal; The locking hook, the fixing piece and the connecting piece are all made of plastic.

12. The rack lock according to claim 8, characterized in that: A concave slot is provided on the side of the hook end facing the mouth wall, and the first slot wall of the slot abutting the mouth wall follows the shape of the mouth wall, and the second slot wall facing away from the first slot wall is inclined downward from the edge of the first slot wall located in the slot toward the rotating shaft.

13. The rack lock according to claim 12, characterized in that: When the locking hook assembly is in the unlocked state, there is a distance between the first groove wall and the mouth wall.

14. A material rack vehicle, characterized in that: include: A movable seat, wherein a plurality of positioning posts are provided at intervals on the upper end surface, and a frame of the electronic screen is provided with positioning holes corresponding to the positioning posts one by one, and the positioning posts can extend into the positioning holes to limit the position of the frame of the electronic screen on the movable seat; and A side frame, the bottom end of which is detachably hooked on the side of the movable base, and a plurality of rack locks are provided on the side frame at intervals, and the rack locks are locked or unlocked with the lock ports on the side of the frame of the electronic screen; The rack lock is the rack lock according to any one of claims 1 to 13.

15. The rack vehicle according to claim 14, characterized in that: At least one card slot is provided on the side of the movable seat, and a card shaft is provided in the card slot; The lower end of the side frame is provided with a hook that matches the card shaft one by one. The hook is connected to the card shaft, and the frame can rotate around the contact point between the hook and the card shaft until the material rack lock is locked with the frame.

16. The rack vehicle according to claim 14, characterized in that: A plurality of abutment blocks are provided at intervals on the bottom end of the side frame, and the abutment blocks abut against the side surfaces of the movable seat; A plurality of position limiting buffer blocks capable of being inserted into and abutting against the frame are provided at intervals above the side of the side frame facing the frame.

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