A PC luggage compressive strength testing device

Abstract

The present invention relates to a testing device, and particularly to a testing device for the compressive strength of a PC trolley case. The present invention provides a testing device for the compressive strength of a PC trolley case with simple testing. A testing device for the compressive strength of a PC trolley case includes a protective housing, a bracket, a guiding sliding frame, a display screen, a pressure measuring mechanism, and a placing mechanism; a bracket is connected inside the protective housing, guiding sliding frames are connected to the lower sides of the left and right parts inside the bracket, a display screen is installed on the upper side of the front part of the bracket, a pressure measuring mechanism is provided on the upper side inside the bracket, and a placing mechanism is provided inside the bracket. In the present invention, by starting the servo motor, the output shaft of the servo motor rotates to move the moving plate downward, so that the identifier moves downward, and the pressing plate and the scale move downward. When the pressing plate moves downward to measure the pressure of the PC trolley case, the identifier imports the corresponding data on the scale into the display screen, thereby achieving the testing effect.

Description

Technical Field

[0001] The present invention relates to a testing device, and more particularly to a testing device for the compressive strength of a PC trolley case. Background Art

[0002] A PC trolley case is a commonly used tool for people to travel. After the PC trolley case is produced, a compressive test will be carried out on the PC trolley case. Therefore, a testing device needs to be designed.

[0003] Patent Application: CN213875283U, with a publication date of 20210803, discloses a testing machine for the compressive test of luggage, which includes a support plate, a conveyor belt, a test channel, a gravity block, and a control box. A test channel is arranged in the middle on the upper side of the support plate, a conveyor belt is arranged on the upper end surface of the support plate, a control box is arranged in the middle on the front end surface of the test channel, a first cylinder is arranged below the control box, a second cylinder is arranged on the lower side of the rear end surface of the test channel, a first clamping plate and a second clamping plate are symmetrically arranged on the front and rear sides of the lower side inside the test channel, a driving motor is installed on the upper inner wall of the test channel, a winding roller is arranged in front of the driving motor, and a gravity block is arranged below the winding roller. When the device is in use, the luggage is tested by using an operation panel, but the device needs to be operated on the operation panel multiple times during the test, which consumes manpower and reduces work efficiency at the same time.

[0004] We have designed a testing device for the compressive strength of a PC trolley case with simple testing to achieve the effect of overcoming the cumbersome testing operation of the existing testing machine and consuming manpower. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a testing device for the compressive strength of a PC trolley case with simple testing to overcome the disadvantage of consuming manpower during the test of the existing testing machine.

[0006] To achieve the above object, the present invention is realized through the following solutions: A testing device for the compressive strength of a PC trolley case, comprising:

[0007] A protective housing and a bracket, the bracket is connected inside the protective housing;

[0008] A guiding sliding frame, the guiding sliding frames are connected to the lower sides of the left and right parts inside the bracket;

[0009] A display screen, a display screen for displaying pressure measurement data is installed on the upper side of the front part of the bracket;

[0010] A pressure measurement mechanism, a pressure measurement mechanism for measuring the pressure of the PC trolley case is arranged on the upper side inside the bracket;

[0011] A placement mechanism, a placement mechanism for placing the PC trolley case is arranged inside the bracket.

[0012] As an improvement to the above solution, the pressure measuring mechanism includes:

[0013] A motor frame, with a motor frame connected to the middle of the top of the bracket;

[0014] A servo motor, with the servo motor installed inside the motor frame;

[0015] A lead screw, with the lead screw connected to the output shaft of the servo motor and rotatably connected to the bracket;

[0016] Expansion rods, with expansion rods connected to the front and rear sides of the inner top of the bracket;

[0017] A pressing plate, with a pressing plate connected between the bottoms of the two expansion rods;

[0018] A moving plate, with the moving plate threadedly connected to the lead screw;

[0019] First sliding rods, with two first sliding rods connected to the front and rear sides of the upper part of the pressing plate, and the moving plate is slidably connected to the first sliding rods;

[0020] First springs, with two first springs connected to the front and rear sides between the pressing plate and the moving plate, and the first springs are wound around the first sliding rods;

[0021] A scale, with a scale connected to the front side of the upper part of the pressing plate;

[0022] An identifier, with an identifier for identifying pressure measurement data installed on the front side of the lower part of the moving plate, and the identifier is connected to the display screen through an electric wire.

[0023] As an improvement to the above solution, the placing mechanism includes:

[0024] Cylinders, with cylinders installed on both the left and right sides of the bracket;

[0025] Second sliding rods, with two groups of second sliding rods connected to both the left and right parts of the bracket, and every two second sliding rods form a group;

[0026] A first placing plate frame, with a first placing plate frame slidably connected between the four second sliding rods on the left side, and also a first placing plate frame slidably connected between the four second sliding rods on the right side, and the first placing plate frame is slidably connected to the bracket;

[0027] Connecting plates, with connecting plates connected to the outer sides of the two first placing plate frames, and the connecting plates are connected to the telescopic rods of the adjacent cylinders.

[0028] As an improvement to the above solution, it further includes a pressing mechanism for pressing the PC trolley case, and the pressing mechanism includes:

[0029] Guide frames, with two guide frames connected to both the left and right sides of the bracket;

[0030] Pressing frame: A pressing frame is slidably connected between the two guiding frames on the left side, and a pressing frame is also slidably connected between the two guiding frames on the right side. The pressing frame is slidably connected to the support frame;

[0031] Second spring: A second spring is connected between the front side of the lower part of the pressing frame and the guiding frame close to the front side, and a second spring is also connected between the rear side of the lower part of the pressing frame and the guiding frame close to the rear side. The second spring is wound around the lower side of the pressing frame;

[0032] First connecting frame: First connecting frames are connected to both the front and rear sides of the upper part of the pressing frame;

[0033] Third sliding rod: A third sliding rod is connected to the inner side of the upper part of the first connecting frame;

[0034] First moving frame: Two first moving frames are connected to both the left and right sides of the moving plate. The first moving frame is slidably connected to the adjacent third sliding rod;

[0035] Third spring: A third spring is connected between the first moving frame and the adjacent first connecting frame. The third spring is wound around the third sliding rod.

[0036] As an improvement to the above solution, there is also a positioning mechanism for clamping the PC luggage case. The positioning mechanism includes:

[0037] First wedge block: First wedge blocks are connected to both the front and rear sides of the lower part of the pressing frame;

[0038] Fourth sliding rod: Two groups of fourth sliding rods are connected to both the front and rear sides inside the support frame, with every two fourth sliding rods as a group;

[0039] Limit frame: A limit frame is slidably connected between the adjacent two fourth sliding rods;

[0040] Fourth spring: Fourth springs are connected between the upper and lower sides of the limit frame and the adjacent fourth sliding rods. The fourth springs are wound around the fourth sliding rods;

[0041] Second wedge block: Second wedge blocks are connected to the outer sides of the limit frames.

[0042] As an improvement to the above solution, there is also a stabilizing mechanism for holding the PC luggage case. The stabilizing mechanism includes:

[0043] First support frame: First support frames are connected to both the front and rear lower sides of the support frame;

[0044] Guide rail: Guide rails are connected to the middle of the upper parts of the two first support frames;

[0045] Slider: Sliders are slidably connected to both of the guide rails;

[0046] Second connecting frame: Second connecting frames are connected to the inner sides of the upper parts of the two sliders;

[0047] A second placement plate frame, with a second placement plate frame connected to the inner sides of the second connecting frames;

[0048] A second moving frame, with a second moving frame connected to both the front and rear parts of the first placement plate frame;

[0049] Guide plates, with guide plates connected to both the left and right sides of the second connecting frames, and the second moving frame is slidably connected to the adjacent guide plates.

[0050] As an improvement to the above solution, it further includes a buffer mechanism for buffering the descent of the PC luggage case. The buffer mechanism includes:

[0051] Air cylinders, with three air cylinders evenly connected to the lower side inside the support;

[0052] A top plate, with a top plate slidably connected between the three air cylinders;

[0053] A second support frame, with a second support frame connected to both the left and right parts of the lower side inside the support;

[0054] Air storage boxes, with air storage boxes connected to the inner sides of the two second support frames;

[0055] Air pumps, with air pumps installed in the middle of the lower parts of the two air storage boxes;

[0056] Second air ducts, with second air ducts connected between the two air pumps and the three air cylinders;

[0057] First air ducts, with first air ducts connected to both the left and right sides between the three air cylinders;

[0058] Air release valves, with air release valves installed on the upper sides of the two first air ducts.

[0059] As an improvement to the above solution, it further includes an air inlet pipe, with an air inlet pipe connected to the outer sides of the two air storage boxes.

[0060] The advantages of the present invention are as follows: 1. By people starting the servo motor, the output shaft of the servo motor rotates to move the moving plate downward, thereby causing the identifier to move downward, causing the pressing plate and the scale to move downward. When the pressing plate moves downward to measure the PC luggage case, the identifier imports the corresponding data on the scale into the display screen, thus achieving the test effect;

[0061] 2. The downward movement of the moving plate drives the first moving frame to move downward, thereby causing the first connecting frame and the pressing frame to move downward. By the downward movement of the pressing frame to contact the PC luggage case, the pressing effect is achieved, avoiding the PC luggage case from easily moving and affecting the test effect;

[0062] 3. Move outward through the connecting plate to contact the air release valve, so that the air release valve is opened. At this time, the helium gas in the air cylinder is discharged through the first air duct and the air release valve, so that the top plate and the tested PC trolley case move downward, thus achieving the buffering effect and avoiding the PC trolley case from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 It is a three-dimensional structure schematic diagram of the present invention.

[0064] Figure 2 It is a partial three-dimensional structure schematic diagram of the present invention.

[0065] Figure 3 It is a first three-dimensional structure schematic diagram of the pressure measuring mechanism of the present invention.

[0066] Figure 4 It is a second three-dimensional structure schematic diagram of the pressure measuring mechanism of the present invention.

[0067] Figure 5 It is a third three-dimensional structure schematic diagram of the pressure measuring mechanism of the present invention.

[0068] Figure 6 It is a first three-dimensional structure schematic diagram of the placing mechanism of the present invention.

[0069] Figure 7 It is a second three-dimensional structure schematic diagram of the placing mechanism of the present invention.

[0070] Figure 8 It is a first three-dimensional structure schematic diagram of the pressing mechanism of the present invention.

[0071] Figure 9 It is a second three-dimensional structure schematic diagram of the pressing mechanism of the present invention.

[0072] Figure 10 It is a first three-dimensional structure schematic diagram of the positioning mechanism of the present invention.

[0073] Figure 11 It is a second three-dimensional structure schematic diagram of the positioning mechanism of the present invention.

[0074] Figure 12 It is a first three-dimensional structure schematic diagram of the stabilizing mechanism of the present invention.

[0075] Figure 13 It is a second three-dimensional structure schematic diagram of the stabilizing mechanism of the present invention.

[0076] Figure 14 It is a first three-dimensional structure schematic diagram of the buffering mechanism of the present invention.

[0077] Figure 15 It is a second three-dimensional structure schematic diagram of the buffering mechanism of the present invention.

[0078] Names and serial numbers of components in the figure: 1 - protective housing, 2 - bracket, 21 - guiding slide, 3 - display screen, 4 - pressure measuring mechanism, 41 - motor bracket, 42 - servo motor, 43 - telescopic rod, 44 - first slide bar, 45 - first spring, 46 - lead screw, 47 - pressing plate, 48 - scale, 49 - identifier, 410 - moving plate, 5 - placing mechanism, 51 - second slide bar, 52 - first placing plate bracket, 53 - cylinder, 54 - connecting plate, 6 - pressing mechanism, 61 - guiding frame, 62 - pressing frame, 63 - second spring, 64 - first connecting frame, 65 - third spring, 66 - third slide bar, 67 - first moving frame, 7 - positioning mechanism, 71 - first wedge block, 72 - limiting frame, 73 - fourth slide bar, 74 - fourth spring, 75 - second wedge block, 8 - stabilizing mechanism, 81 - first support frame, 82 - guiding rail, 83 - slider, 84 - second connecting frame, 85 - second placing plate bracket, 86 - second moving frame, 87 - guiding plate, 9 - buffering mechanism, 91 - second support frame, 92 - air storage box body, 93 - air cylinder, 94 - top plate, 95 - first air duct, 96 - air release valve, 97 - second air duct, 98 - air pump, 99 - air inlet pipe. Specific implementation mode

[0079] Next, in combination with the accompanying drawings and specific implementation modes, the present invention will be further described:

[0080] Embodiment 1

[0081] A PC luggage case compressive strength testing device, now referring to Figures 1 - 3 , includes a protective housing 1, a bracket 2, a guiding slide 21, a display screen 3, a pressure measuring mechanism 4 and a placing mechanism 5. The bracket 2 is welded inside the protective housing 1. The display screen 3 is installed on the upper side of the front part of the bracket 2. The guiding slides 21 are welded on the lower sides of the left and right parts inside the bracket 2. The guiding slides 21 are inclined. The pressure measuring mechanism 4 is arranged on the upper side inside the bracket 2. The placing mechanism 5 is arranged inside the bracket 2.

[0082] Now referring to Figures 1 - 5, the pressure measuring mechanism 4 includes a motor frame 41, a servo motor 42, a telescopic rod 43, a first slide bar 44, a first spring 45, a lead screw 46, a pressing plate 47, a scale 48, an identifier 49 and a moving plate 410. The motor frame 41 is welded to the middle of the top of the bracket 2. The servo motor 42 is fixedly connected to the inner side of the motor frame 41 by bolts. The output shaft of the servo motor 42 is connected to the lead screw 46 through a coupling. The lead screw 46 is rotatably connected to the bracket 2. The telescopic rods 43 are welded to the front and rear sides of the inner top of the bracket 2. A pressing plate 47 is connected between the bottoms of the two telescopic rods 43. The moving plate 410 is threadedly connected to the lead screw 46. Two first slide bars 44 are welded to the front and rear sides of the upper part of the pressing plate 47. There are four first slide bars 44. The moving plate 410 is slidably connected to the first slide bars 44. Two first springs 45 are connected between the pressing plate 47 and the moving plate 410 on the front and rear sides. There are four first springs 45. The first springs 45 are wound around the first slide bars 44. The scale 48 is connected to the front side of the upper part of the pressing plate 47. The identifier 49 is installed on the front side of the lower part of the moving plate 410. The identifier 49 is connected to the display screen 3 through an electric wire.

[0083] Now refer to Figure 1 , Figure 2 , Figure 6 and Figure 7 , the placing mechanism 5 includes a second slide bar 51, a first placing plate frame 52, a cylinder 53 and a connecting plate 54. The cylinders 53 are installed on the left and right sides of the bracket 2. Two groups of second slide bars 51 are welded to the left and right parts of the bracket 2. Every two second slide bars 51 form a group. There are eight second slide bars 51. A first placing plate frame 52 is slidably connected between the four second slide bars 51 on the left side. A first placing plate frame 52 is also slidably connected between the four second slide bars 51 on the right side. There are two first placing plate frames 52. The first placing plate frames 52 are slidably connected to the bracket 2. Connecting plates 54 are welded to the outer sides of the two first placing plate frames 52. The connecting plates 54 are connected to the telescopic rods of the adjacent cylinders 53.

[0084] When people need to conduct a compressive strength test on a PC luggage case, they can use this PC luggage case compressive strength test device. First, people place the PC luggage case between the upper sides of two first placement plate frames 52. Subsequently, people start the servo motor 42. The rotation of the output shaft of the servo motor 42 drives the lead screw 46 to rotate, thereby causing the moving plate 410 to move downward and the identifier 49 to move downward. At this time, the moving plate 410 drives the first slide bar 44 and the pressure plate 47 to move downward through the first spring 45. Furthermore, the scale 48 moves downward, causing the telescopic rod 43 to extend. When the pressure plate 47 contacts the PC luggage case, at this time, the moving plate 410 continues to move downward, causing the first spring 45 to be compressed and the pressure plate 47 to move slightly downward, thereby causing the scale 48 to move slightly downward. At this time, the identifier 49 displays the scale on the scale 48 on the display screen 3. People can understand the compressive strength of the PC luggage case by checking the display screen 3, thus achieving the effect of the compressive strength test. When the detection is completed, people control the output shaft of the servo motor 42 to rotate in the reverse direction. The output shaft of the servo motor 42 drives the lead screw 46 to rotate in the reverse direction, thereby causing the moving plate 410 to move upward. The first spring 45 returns to its original state. Subsequently, the first spring 45 pulls the pressure plate 47 and the first slide bar 44 upward, and the telescopic rod 43 shortens. When the pressure plate 47 moves upward away from the PC luggage case, the first spring 45 resets and drives the pressure plate 47 and the first slide bar 44 to reset. When the moving plate 410 moves to a suitable position, people turn off the servo motor 42. Then people start the cylinder 53. The telescopic rod of the cylinder 53 extends outward and drives the connecting plate 54 to move outward, thereby causing the first placement plate frame 52 to move outward along the second slide bar 51. When the first placement plate frame 52 moves outward away from the PC luggage case, the PC luggage case moves downward until it contacts the guiding slide frame 21. At this time, people can control the telescopic rod of the cylinder 53 to shorten inward, causing the connecting plate 54 to move inward, thereby causing the first placement plate frame 52 to move inward along the second slide bar 51. When the first placement plate frame 52 moves inward to a suitable position, people turn off the cylinder 53. Since the guiding slide frame 21 is inclined, the detected PC luggage case slides forward through the guiding slide frame 21, and people collect the detected PC luggage case in the protective housing 1.

[0085] Embodiment 2

[0086] Based on Embodiment 1, now refer to Figure 1 、 Figure 2 、 Figure 8 and Figure 9, it further includes a pressing mechanism 6. The pressing mechanism 6 includes a guiding frame 61, a pressing frame 62, a second spring 63, a first connecting frame 64, a third spring 65, a third sliding rod 66 and a first moving frame 67. Two guiding frames 61 are welded on both the left and right sides of the bracket 2. There are four guiding frames 61. A pressing frame 62 is slidably connected between the two left guiding frames 61, and a pressing frame 62 is also slidably connected between the two right guiding frames 61. There are two pressing frames 62. The pressing frame 62 is slidably connected to the bracket 2. A second spring 63 is connected between the front side of the lower part of the pressing frame 62 and the adjacent guiding frame 61 at the front side, and a second spring 63 is also connected between the rear side of the lower part of the pressing frame 62 and the adjacent guiding frame 61 at the rear side. There are four second springs 63. The second springs 63 are wound around the lower side of the guiding frame 61. First connecting frames 64 are welded on both the front and rear sides of the upper part of the pressing frame 62. There are four first connecting frames 64. Third sliding rods 66 are welded on the inner sides of the upper parts of the first connecting frames 64. There are four third sliding rods 66. Two first moving frames 67 are welded on both the left and right sides of the moving plate 410. There are four first moving frames 67. The first moving frame 67 is slidably connected to the adjacent third sliding rod 66. A third spring 65 is connected between the first moving frame 67 and the adjacent first connecting frame 64. There are four third springs 65. The third springs 65 are wound around the third sliding rods 66.

[0087] Now refer to Figure 1 , Figure 2 , Figure 10 and Figure 11 , it further includes a positioning mechanism 7. The positioning mechanism 7 includes a first wedge block 71, a limiting frame 72, a fourth sliding rod 73, a fourth spring 74 and a second wedge block 75. First wedge blocks 71 are welded on both the front and rear sides of the lower part of the pressing frame 62. There are four first wedge blocks 71. Two groups of fourth sliding rods 73 are welded on both the front and rear sides inside the bracket 2. Every two fourth sliding rods 73 form a group. There are eight fourth sliding rods 73. A limiting frame 72 is slidably connected between each group of fourth sliding rods 73. There are four limiting frames 72. Fourth springs 74 are connected between the upper and lower sides of the limiting frame 72 and the adjacent fourth sliding rods 73. The fourth springs 74 are wound around the fourth sliding rods 73. There are eight fourth springs 74. Second wedge blocks 75 are welded on the outer sides of the limiting frames 72. There are four second wedge blocks 75. After the first wedge block 71 moves, it contacts the adjacent second wedge block 75.

[0088] Now refer to Figure 1 , Figure 2 , Figure 12 and Figure 13, it further includes a stabilizing mechanism 8. The stabilizing mechanism 8 includes a first support frame 81, a guide rail 82, a slider 83, a second connecting frame 84, a second placing plate frame 85, a second moving frame 86, and a guide plate 87. The first support frames 81 are welded to the lower sides of the front and rear parts of the bracket 2. The guide rails 82 are welded to the middle of the upper parts of the two first support frames 81. The sliders 83 are slidably connected to the two guide rails 82. The second connecting frames 84 are welded to the inner sides of the upper parts of the two sliders 83. The second placing plate frames 85 are welded to the inner sides of the second connecting frames 84. The second moving frames 86 are welded to the front and rear parts of the first placing plate frame 52. There are four second moving frames 86. The guide plates 87 are welded to the left and right sides of the second connecting frames 84. There are four guide plates 87. The second moving frames 86 are slidably connected to the adjacent guide plates 87.

[0089] Now refer to Figure 2 , Figure 14 and Figure 15 , it further includes a buffering mechanism 9. The buffering mechanism 9 includes a second support frame 91, an air storage box 92, an air cylinder 93, a top plate 94, a first air duct 95, a pressure relief valve 96, a second air duct 97, and an air pump 98. Three air cylinders 93 are evenly installed on the lower inner side of the bracket 2. The top plate 94 is slidably connected between the three air cylinders 93. The second support frames 91 are welded to the lower sides of the left and right parts inside the bracket 2. The air storage boxes 92 are installed on the inner sides of the two second support frames 91. The air pumps 98 are installed in the middle of the lower parts of the two air storage boxes 92. The second air ducts 97 are connected between the two air pumps 98 and the three air cylinders 93. The first air ducts 95 are connected to the left and right sides between the three air cylinders 93. The pressure relief valves 96 are installed on the upper sides of the two first air ducts 95. After the connecting plate 54 moves, it contacts the adjacent pressure relief valve 96.

[0090] Now refer to Figure 14 , it further includes an air inlet pipe 99. The air inlet pipes 99 are installed on the outer sides of the two air storage boxes 92.

[0091] When the moving plate 410 moves downward, it drives the first moving frame 67 to move downward. The first moving frame 67 drives the third sliding rod 66 and the first connecting frame 64 to move downward through the third spring 65, so that the pressing frame 62 moves downward, and the second spring 63 is compressed. When the pressing frame 62 moves downward and contacts the PC luggage case, at this time, the moving plate 410 continues to drive the first moving frame 67 to move downward, so that the third spring 65 is compressed, thereby achieving the pressing effect and avoiding the PC luggage case moving easily during detection and affecting the detection effect. When the moving plate 410 moves upward, it drives the first moving frame 67 to move upward, and the third spring 65 returns to its original state. Then, the third spring 65 pulls the first connecting frame 64 and the third sliding rod 66 to move upward, so that the pressing frame 62 moves upward, and the second spring 63 plays a buffering role.

[0092] The pressing frame 62 moves downward to drive the first wedge block 71 to move downward. When the first wedge block 71 moves downward and contacts the second wedge block 75, the first wedge block 71 drives the second wedge block 75 to move inward, causing the limiting frame 72 to move inward and contact the PC trolley case. The fourth spring 74 is compressed, thus achieving the limiting effect and strengthening the fixing effect on the PC trolley case. When the pressing frame 62 moves upward to drive the first wedge block 71 to move upward, at this time, the pressure of the first wedge block 71 on the second wedge block 75 is relatively small, causing the fourth spring 74 to reset and drive the limiting frame 72 to move outward, thereby causing the second wedge block 75 to move outward.

[0093] First, people place the PC trolley case between the first placement plate frame 52 and the second placement plate frame 85. The first placement plate frame 52 moves outward to drive the second moving frame 86 to move outward, causing the guide plate 87 to move outward, thereby causing the second connecting frame 84 and the second placement plate frame 85 to move outward, and causing the slider 83 to move outward along the guide rail 82. The first placement plate frame 52 moves inward to drive the second moving frame 86 to move inward, causing the guide plate 87 to move inward, thereby causing the second connecting frame 84 and the second placement plate frame 85 to move inward, and causing the slider 83 to move inward along the guide rail 82. Subsequently, people can place the PC trolley case between the first placement plate frame 52 and the second placement plate frame 85 again according to the above operation, thus achieving a stable effect.

[0094] First, people inject an appropriate amount of helium into the gas storage box body 92 through the air inlet pipe 99 outside the gas storage box body 92. When people need to place the PC trolley case, they can start the air pump 98, causing the air pump 98 to make the helium in the gas storage box body 92 flow through the second air duct 97 to the air cylinder 93. Under the action of air pressure, the top plate 94 moves upward. When the top plate 94 moves upward to an appropriate position, people turn off the air pump 98. Subsequently, people place the PC trolley case between the top plate 94, the first placement plate frame 52 and the second placement plate frame 85. When the connecting plate 54 moves outward and contacts the air release valve 96, the air release valve 96 is opened, causing the helium in the air cylinder 93 to be discharged through the first air duct 95 and the air release valve 96, thereby causing the air pressure in the air cylinder 93 to change, and the top plate 94 and the PC trolley case to move downward. When the PC trolley case contacts the guide sliding frame 21, the PC trolley case slides forward along the guide sliding frame 21, thus achieving a buffering effect and avoiding damage caused by the direct fall of the PC trolley case. When the connecting plate 54 moves inward and moves away from the air release valve 96, the air release valve 96 is closed.

[0095] For those skilled in the art, according to the technical solutions and concepts described above, various corresponding changes and deformations can be made, and all these changes and deformations should fall within the protection scope of the claims of the present invention.

Claims

1. A PC trolley case compressive strength testing device, characterized in that, It includes: A protective housing (1) and a bracket (2), with the bracket (2) connected inside the protective housing (1); A guiding carriage (21), with the guiding carriage (21) connected to the lower sides of the left and right parts inside the bracket (2); A display screen (3), with the display screen (3) for displaying pressure measurement data installed on the upper side of the front part of the bracket (2); A pressure measurement mechanism (4), with the pressure measurement mechanism (4) for measuring the pressure of the PC luggage case provided on the upper side inside the bracket (2); A placement mechanism (5), with the placement mechanism (5) for placing the PC luggage case provided inside the bracket (2); The placement mechanism (5) includes: Cylinders (53), with the cylinders (53) installed on both the left and right sides of the bracket (2); Second sliding rods (51), with two groups of second sliding rods (51) connected to both the left and right parts of the bracket (2), and every two second sliding rods (51) form a group; A first placement plate frame (52), with the first placement plate frame (52) slidably connected between the four second sliding rods (51) on the left side, and the first placement plate frame (52) also slidably connected between the four second sliding rods (51) on the right side. The first placement plate frame (52) is slidably connected to the bracket (2); Connecting plates (54), with the connecting plates (54) connected to the outer sides of the two first placement plate frames (52), and the connecting plates (54) are connected to the expansion rods of the adjacent cylinders (53); The pressure measurement mechanism (4) includes: A motor frame (41), with the motor frame (41) connected to the middle of the top of the bracket (2); A servo motor (42), with the servo motor (42) installed inside the motor frame (41); A lead screw (46), with the lead screw (46) connected to the output shaft of the servo motor (42), and the lead screw (46) is rotatably connected to the bracket (2); Expansion rods (43), with the expansion rods (43) connected to the front and rear sides of the inner top of the bracket (2); A pressing plate (47), with the pressing plate (47) connected between the bottoms of the two expansion rods (43); A moving plate (410), with the moving plate (410) threadedly connected to the lead screw (46); First sliding rods (44), with two first sliding rods (44) connected to the front and rear sides of the upper part of the pressing plate (47), and the moving plate (410) is slidably connected to the first sliding rods (44); First springs (45), with two first springs (45) connected to the front and rear sides between the pressing plate (47) and the moving plate (410), and the first springs (45) are wound around the first sliding rods (44); A scale (48), with the scale (48) connected to the front side of the upper part of the pressing plate (47); An identifier (49), with the identifier (49) for identifying the pressure measurement data installed on the front side of the lower part of the moving plate (410), and the identifier (49) is connected to the display screen (3) through an electric wire.

2. The compressive strength testing device for a PC trolley case according to claim 1, wherein, It also includes a pressing mechanism (6) for pressing the PC luggage case. The pressing mechanism (6) includes: Guiding frames (61), with two guiding frames (61) connected to both the left and right sides of the bracket (2); Pressing frames (62), with the pressing frame (62) slidably connected between the two guiding frames (61) on the left side, and the pressing frame (62) also slidably connected between the two guiding frames (61) on the right side. The pressing frame (62) is slidably connected to the bracket (2); Second spring (63), a second spring (63) is connected between the lower front side of the pressing frame (62) and the guiding frame (61) near the front side, and a second spring (63) is also connected between the lower rear side of the pressing frame (62) and the guiding frame (61) near the rear side. The second spring (63) is wound around the lower side of the pressing frame (62); First connecting frame (64), first connecting frames (64) are connected to both the front and rear sides of the upper part of the pressing frame (62); Third sliding rod (66), a third sliding rod (66) is connected to the inner side of the upper part of the first connecting frame (64); First moving frame (67), two first moving frames (67) are connected to both the left and right sides of the moving plate (410). The first moving frame (67) is slidably connected to the adjacent third sliding rod (66); Third spring (65), a third spring (65) is connected between the first moving frame (67) and the adjacent first connecting frame (64). The third spring (65) is wound around the third sliding rod (66).

3. The compressive strength testing device for a PC trolley case according to claim 2, characterized in that, It further includes a positioning mechanism (7) for clamping the PC trolley case. The positioning mechanism (7) includes: First wedge block (71), first wedge blocks (71) are connected to both the front and rear sides of the lower part of the pressing frame (62); Fourth sliding rod (73), two groups of fourth sliding rods (73) are connected to both the front and rear sides inside the bracket (2), and every two fourth sliding rods (73) form a group; Limiting frame (72), a limiting frame (72) is slidably connected between the adjacent two fourth sliding rods (73); Fourth spring (74), fourth springs (74) are connected between the upper and lower sides of the limiting frame (72) and the adjacent fourth sliding rods (73). The fourth spring (74) is wound around the fourth sliding rod (73); Second wedge block (75), second wedge blocks (75) are connected to the outer sides of the limiting frame (72).

4. The compressive strength testing device for a PC trolley case according to claim 3, characterized in that, It further includes a stabilizing mechanism (8) for placing the PC trolley case. The stabilizing mechanism (8) includes: First support frame (81), first support frames (81) are connected to both the front and rear parts of the bracket (2) at a position slightly lower; Guide rail (82), guide rails (82) are connected to the middle of the upper parts of the two first support frames (81); Slider (83), sliders (83) are slidably connected to the two guide rails (82); Second connecting frame (84), second connecting frames (84) are connected to the inner sides of the upper parts of the two sliders (83); Second placement plate frame (85), second placement plate frames (85) are connected to the inner sides of the second connecting frames (84); Second moving frame (86), second moving frames (86) are connected to both the front and rear parts of the first placement plate frame (52); Guide plate (87), guide plates (87) are connected to both the left and right sides of the second connecting frame (84). The second moving frame (86) is slidably connected to the adjacent guide plate (87).

5. The compressive strength testing device for a PC trolley case according to claim 4, characterized in that, It further includes a buffering mechanism (9) for buffering the descent of the PC trolley case. The buffering mechanism (9) includes: Air cylinder (93), three air cylinders (93) are evenly connected to the lower side inside the bracket (2); Top plate (94), a top plate (94) is slidably connected between the three air cylinders (93); Second support frame (91), second support frames (91) are connected to both the left and right parts of the bracket (2) at a position slightly lower; The gas storage box body (92), and the gas storage box body (92) is connected to the inner sides of both of the two second support frames (91); The air pump (98), and the air pump (98) is installed in the middle of the lower parts of both of the two gas storage box bodies (92); The second air duct (97), and the second air duct (97) is connected between both of the two air pumps (98) and the three air cylinders (93); The first air duct (95), and the first air duct (95) is connected to the left and right sides between the three air cylinders (93); The air release valve (96), and the air release valve (96) is installed on the upper sides of both of the two first air ducts (95).

6. The compressive strength testing device for a PC trolley case according to claim 5, characterized in that, It further includes an air inlet pipe (99), and the air inlet pipe (99) is connected to the outer sides of both of the two gas storage box bodies (92).

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