Multi-layer trolley for temporary storage of LED display screens

Abstract

The utility model relates to the technical field of display screen transportation, in particular to a multi-layer trolley for temporary storage of LED (light-emitting diode) display screens, which comprises a base, supporting columns fixedly mounted on two sides of the upper end of the base, a fixing shaft mounted between the two groups of supporting columns, and a supporting component comprising a tray, a tray groove and a shock pad, the tray groove is formed in the tray, the damping pad is fixedly installed at the bottom of the tray groove, the limiting assembly comprises ratchet wheels, pawls, a pawl shaft and an adjusting plate, the ratchet wheels are fixedly installed on the two sides of the tray, the pawls are rotationally installed on the pawl shaft, and the adjusting plate is fixedly installed on one side of the pawls; the angle of the tray can be controlled through the cooperation of the pawl and the ratchet wheel, and better stability can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of display screen transportation technology, specifically a multi-layer trolley for temporary storage of LED displays. Background Technology

[0002] LED electronic displays are a type of display that controls semiconductor light-emitting diodes. They consist of tens of thousands to hundreds of thousands of semiconductor light-emitting diode pixels arranged evenly. Different materials can be used to manufacture LED pixels of different colors to display various information such as text, graphics, images, animations, market information, videos, and recorded signals. Currently, red, green, and yellow are the most widely used, while the development of blue and pure green LEDs has reached the practical stage. In the production process of LED displays, multi-layer trolleys are used to move the displays around so that they can be processed at various workstations.

[0003] However, in actual use, the trays on existing multi-layer trolleys used to place the display screens usually use springs to control the angle of the trays. After a long period of use, the springs are prone to fatigue and can no longer limit the trays, which poses a significant safety hazard. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model proposes a multi-layer trolley for temporary storage of LED displays, which can test lab-grown diamonds using the Mohs hardness test method without causing significant damage to the test object during the testing process.

[0005] The technical solution to achieve the purpose of this utility model is as follows: a multi-layer trolley for temporary storage of LED displays, including a base, with support columns fixedly installed on both sides of the upper end of the base, and a fixed shaft installed between the two sets of support columns. It also includes a support assembly, which includes a tray, a tray groove, and a shock-absorbing pad. The tray is rotatably mounted on the fixed shaft, the tray groove is opened on the tray, and the shock-absorbing pad is fixedly installed at the bottom of the tray groove. The limiting assembly includes a ratchet, a pawl, a pawl shaft, and an adjusting plate. The ratchet is fixedly installed on both sides of the tray, the pawl is rotatably mounted on the pawl shaft, and the adjusting plate is fixedly installed on one side of the pawl.

[0006] Preferably, the pawl shaft is fixedly installed on the inner side of the support column, and the adjusting plate is fixedly installed on one side of the pawl.

[0007] Preferably, the support assembly further includes a tray hole, which is formed on one side of the tray and mates with a fixed shaft.

[0008] Preferably, the support assembly further includes legs, which are fixedly mounted on the lower end of the tray.

[0009] Preferably, a fixing block is installed on the inner side of the support column at the upper end of the fixing shaft, a spring is fixedly installed at one end of the fixing block, and the other end of the spring is fixedly connected to the pawl.

[0010] Preferably, a handle is fixedly installed at one end of the base, and four sets of tires are evenly distributed at the lower end of the base.

[0011] Compared with the prior art, the significant advantages of this utility model are:

[0012] Firstly, in this invention, the tray can rotate around a fixed axis. When the tray is lifted upwards, it drives the ratchet to rotate. During rotation, the ratchet pushes the pawl outwards, causing the spring to contract. The pawl does not limit the ratchet. When the tray is lifted to a sufficient angle, releasing the hand causes the ratchet to reverse. At this time, the pressure of the spring can cause the pawl to lock the ratchet, thus preventing the tray from falling. After removing the display screen from the lower tray, pressing down on the adjustment plate will release the pawl from limiting the ratchet. This provides better stability compared to most methods that directly use springs for limiting.

[0013] Secondly, in this utility model, when transporting the display screen, it is necessary to place the display screen inside the tray groove. The shock-absorbing pad at the bottom of the tray groove can prevent the display screen from being scratched or bumped, and the support column can also limit the position of the tray to prevent the tray from shaking during transportation. Attached Figure Description

[0014] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a rear-view three-dimensional structural schematic diagram of the present invention;

[0017] Figure 3 This is a partial exploded view of the structure of this utility model;

[0018] Figure 4 This is a utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Base; 2. Support column; 3. Fixed shaft; 4. Support assembly; 41. Tray; 42. Tray groove; 43. Shock-absorbing pad; 44. Support leg; 45. Tray hole; 5. Limiting assembly; 51. Ratchet; 52. Pad; 53. Fixing block; 54. Spring; 55. Adjusting plate; 56. Pad shaft; 6. Handle; 7. Tire. Detailed Implementation

[0021] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0022] This utility model provides an improved layered trolley for temporary storage of LED displays. The technical solution of this utility model is as follows:

[0023] like Figure 1 - Figure 4 As shown, a multi-layer trolley for temporary storage of LED displays includes a base 1, with support columns 2 fixedly installed on both sides of the upper end of the base 1, and a fixed shaft 3 installed between the two sets of support columns 2. It also includes a support assembly 4, which includes a tray 41, a tray groove 42, and a shock-absorbing pad 43. The tray 41 is rotatably mounted on the fixed shaft 3, the tray groove 42 is opened on the tray 41, the shock-absorbing pad 43 is fixedly installed at the bottom of the tray groove 42, and a limiting assembly 5, which includes a ratchet 51, a pawl 52, a pawl shaft 56, and an adjusting plate 55. The ratchet 51 is fixedly installed on both sides of the tray 41, the pawl 52 is rotatably mounted on the pawl shaft 56, and the adjusting plate 55 is fixedly installed on one side of the pawl 52.

[0024] Furthermore, the pawl shaft 56 is fixedly installed on the inner side of the support column 2, and the adjusting plate 55 is fixedly installed on one side of the pawl 52. Pressing the adjusting plate 55 can make the pawl 52 rotate, thereby releasing the limit on the ratchet 51.

[0025] Furthermore, the support component 4 also includes a tray hole 45, which is opened on one side of the tray 41 and cooperates with the fixed shaft 3.

[0026] Furthermore, the support assembly 4 also includes a support leg 44, which is fixedly installed at the lower end of the tray 41. The support leg 44 fixes the distance between several groups of trays 41 and prevents the upper tray 41 from squeezing the display screen on the lower tray 41.

[0027] Furthermore, a fixing block 53 is installed on the inner side of the support column 2 at the upper end of the fixing shaft 3. A spring 54 is fixedly installed at one end of the fixing block 53, and the other end of the spring 54 is fixedly connected to the pawl 52.

[0028] Furthermore, a handle 6 is fixedly installed at one end of the base 1, and four sets of tires 7 are evenly distributed at the lower end of the base 1. By pushing the handle 6, the tires 7 are rotated, thereby driving the entire device to move.

[0029] The specific working method is as follows: When the tray 41 is lifted upwards, it drives the ratchet 51 to rotate. During the rotation, the ratchet 51 pushes the pawl 52 outwards, causing the spring 54 to contract. At this time, the pawl 52 does not limit the ratchet 51. When the tray 41 is lifted to a sufficient angle, the hand is released, and the ratchet 51 will reverse. At this time, the pressure of the spring 54 will cause the pawl 52 to lock the ratchet 51 again, thereby effectively preventing the tray 41 from falling. After the display screen is removed from the lower tray 41, the adjustment plate 55 is pressed down to release the restriction of the pawl 52 on the ratchet 51. Compared with most methods that directly use the spring 54 for limiting, this structure has higher stability. When transporting the display screen, the display screen needs to be placed in the tray groove 42. The shock-absorbing pad 43 at the bottom of the tray groove 42 can effectively prevent the display screen from being scratched or bumped, while the support column 2 can limit the tray 41 to prevent it from shaking during transportation.

[0030] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A multi-layer trolley for temporary storage of LED displays, comprising a base (1), wherein support columns (2) are fixedly installed on both sides of the upper end of the base (1), and a fixed shaft (3) is installed between the two sets of support columns (2), characterized in that, Also includes: Support assembly (4), the support assembly (4) includes a tray (41), a tray groove (42) and a shock-absorbing pad (43), the tray (41) is rotatably mounted on a fixed shaft (3), the tray groove (42) is opened on the tray (41), and the shock-absorbing pad (43) is fixedly mounted on the bottom of the tray groove (42); The limiting component (5) includes a ratchet (51), a pawl (52), a pawl shaft (56), and an adjusting plate (55). The ratchet (51) is fixedly installed on both sides of the tray (41), the pawl (52) is rotatably installed on the pawl shaft (56), and the adjusting plate (55) is fixedly installed on one side of the pawl (52).

2. The layered trolley for temporary storage of LED displays according to claim 1, characterized in that: The pawl shaft (56) is fixedly installed on the inner side of the support column (2), and the adjusting plate (55) is fixedly installed on one side of the pawl (52).

3. The layered trolley for temporary storage of LED displays according to claim 1, characterized in that: The support assembly (4) also includes a tray hole (45), which is opened on one side of the tray (41) and is engaged with the fixed shaft (3).

4. The layered trolley for temporary storage of LED displays according to claim 1, characterized in that: The support assembly (4) also includes a leg (44), which is fixedly installed at the lower end of the tray (41).

5. The layered trolley for temporary storage of LED displays according to claim 1, characterized in that: A fixing block (53) is installed on the inner side of the support column (2) at the upper end of the fixing shaft (3). A spring (54) is fixedly installed at one end of the fixing block (53), and the other end of the spring (54) is fixedly connected to the pawl (52).

6. The layered trolley for temporary storage of LED displays according to claim 1, characterized in that: A handle (6) is fixedly installed at one end of the base (1), and four sets of tires (7) are evenly distributed at the lower end of the base (1).

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