Tank cover opening and closing fatigue testing device

Abstract

The utility model relates to a box cover opening and closing fatigue testing device, which is characterized in that a box body is arranged at the front end of a base, a fatigue testing unit is arranged at the rear end of the base, the fatigue testing unit comprises a bottom plate, a driving motor and a bearing seat, the driving motor is fixedly arranged at the rear end of the bottom plate, and the end part of an output shaft of the driving motor is fixedly connected with a crank block; the end part of the connecting rod is rotationally connected with a rack; bearing seats are symmetrically installed on the two sides of the front end of the bottom plate, a rotating shaft penetrates through the bearing seats, the side, located in the bearing seats, of the rotating shaft is sleeved with a gear, and the gear is meshed with the rack; the two ends of the rotating shaft are connected with clamping arms which are connected with a box cover of the box body. The device is ingenious in structural design, the clamping arms clamp the box cover and the fatigue test unit drives the clamping arms to enable the clamping arms to drive the box cover to complete opening and closing at a certain angle, intelligent opening and closing of the box cover of the box body are completed at a constant speed for more than hundreds of thousands of times, and then opening and closing fatigue detection of the box cover is completed.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging testing, and in particular relates to a box cover opening and closing fatigue testing device. Background Art

[0002] Military boxes, that is, military product packaging boxes, are used in military and logistics product packaging, military factories and other fields;

[0003] Foldable boxes can be folded to reduce space occupation, which has great advantages in transportation tools such as trucks, containers and ships. They are currently widely used in the field of logistics and transportation.

[0004] Due to their special uses and wide applications, the structural design and material selection of the above two types of packaging boxes require rigorous consideration so that their reliability and stability can effectively protect the goods and reduce the risk of damage.

[0005] At present, although the numerical simulation technology for predicting the fatigue life of the box structure of such packaging boxes has reached a certain level, the life testing of related materials and structures is still limited to the environmental testing level. There is currently no professional equipment support for the testing of the opening and closing life of such boxes, because it is impossible to detect the folding life of the folding box and the final opening and closing times when the connection line between the military box lid and the box body breaks, thus unable to provide experimental support for the improvement of the packaging box materials and structure. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a box lid opening and closing fatigue testing device, which can meet the requirements of intelligently opening and closing the box lid of the box body more than hundreds of thousands of times at a uniform speed to complete the opening and closing fatigue detection of the box lid.

[0007] The utility model solves the technical problem by the following technical solutions:

[0008] A box cover opening and closing fatigue test device comprises a base, a box body is placed on the front end of the base, a fatigue test unit is arranged at the rear end of the base, the fatigue test unit comprises a bottom plate, a drive motor and a bearing seat, the rear end of the bottom plate is fixedly installed with the drive motor, the output shaft end of the drive motor is fixedly connected to the crank block, the crank block end is rotatably connected to the connecting rod, and the connecting rod end is rotatably connected to the rack; the bearing seats are symmetrically installed on both sides of the front end of the bottom plate, a rotating shaft is passed through the bearing seats, the rotating shaft is located on one side of the bearing seat and a gear is mounted, and the gear is meshed with the rack; both ends of the rotating shaft are connected to the clamping arm, and the clamping arm is connected to the box cover of the box body.

[0009] Moreover, the end of the rotating shaft is connected to a slider, and a guide rail is provided at the rear end of the clamping arm. The slider and the guide rail cooperate to control the displacement movement of the connection between the slider and the clamping arm when the box cover is opened.

[0010] Moreover, a lifting unit is provided at the rear end of the fatigue testing unit, and the lifting unit includes support rods installed at the four corners of the base, and a double-screw elevator is installed at the top of the support rod. The screws of the double-screw elevator are sequentially inserted into the base plate and the base, and are respectively connected to the base plate and the base through screw nuts and screw base bearings.

[0011] Moreover, a dust cover is provided on the bottom plate of the fatigue testing unit.

[0012] Moreover, casters are provided at the four corners of the base.

[0013] The advantages and beneficial effects of the utility model are:

[0014] 1. The box lid opening and closing fatigue test device of the utility model has an ingenious structural design. The clamping arm clamps the box lid and the fatigue test unit drives the clamping arm, so that the clamping arm drives the box lid to open and close at a certain angle, completing the intelligent opening and closing of the box lid at a uniform speed for more than hundreds of thousands of times, thereby completing the opening and closing fatigue test of the box lid.

[0015] 2. In the box cover opening and closing fatigue testing device of the present invention, the end of the rotating shaft is connected to a slider, and a guide rail is provided at the rear end of the clamping arm. The slider and the guide rail cooperate to control the displacement movement of the connection between the box cover and the clamping arm when the box cover is opened, so as to avoid interference caused by different tilting progress of the clamping arm and the rear end of the box cover that affects the opening of the box cover.

[0016] 3. The box cover opening and closing fatigue test device of the present invention has a lifting unit at the rear end of the fatigue test unit. The lifting unit includes support rods installed at the four corners of the base, and a double-screw elevator is installed at the top of the support rod. The screws of the double-screw elevator are sequentially inserted into the bottom plate and the base, and are respectively connected to the bottom plate and the base through screw nuts and screw base bearings. Since military boxes and folding boxes have different height dimensions, the lifting unit drives the lifting of the fatigue test unit to complete the matching of different height dimensions, thereby being suitable for fatigue opening and closing tests of different military boxes and folding boxes.

[0017] 4. In the box cover opening and closing fatigue test device of the present invention, a dust cover is provided on the bottom plate of the fatigue test unit, which can not only prevent dust from entering the fatigue test unit and affecting the normal use of the components, but also has an aesthetic and safety effect, ensuring operational safety.

[0018] 5. The box cover opening and closing fatigue testing device of the present invention has casters at the four corners of the base, which facilitates the movement and transportation of the testing device and saves manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2This is a structural diagram of the fatigue test unit of the utility model (without the dust cover);

[0021] Figure 3 This is a top view of the fatigue test unit of the utility model (without the dust cover);

[0022] Figure 4 It is a rear view of the utility model;

[0023] Figure 5 It is a right view of the utility model.

[0024] Description of Reference Numerals

[0025] 1-base, 2-box, 3-fatigue test unit, 4-bottom plate, 5-drive motor, 6-bearing seat, 7-crank block, 8-connecting rod, 9-rack, 10-rotating shaft, 11-gear, 12-clamp arm, 13-box cover, 14-slider, 15-guide rail, 16-support rod, 17-double screw lift, 18-screw, 19-screw base bearing, 20-screw nut, 21-dust cover, 22-castor. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below through specific embodiments. The following embodiments are merely illustrative and non-restrictive, and should not be used to limit the scope of protection of the present invention.

[0027] A fatigue test device for opening and closing of a box cover, the innovation of which lies in: comprising a base 1, a box body 2 is placed on the front end of the base 1, a fatigue test unit 3 is arranged at the rear end of the base 2, the fatigue test unit 3 comprises a bottom plate 4, a drive motor 5 and a bearing seat 6, the rear end of the bottom plate 4 is fixedly installed with the drive motor 5, the output shaft end of the drive motor 5 is fixedly connected to the crank block 7, the end of the crank block 7 is rotatably connected to the connecting rod 8, and the end of the connecting rod 8 is rotatably connected to the rack 9; the bearing seats 6 are symmetrically installed on both sides of the front end of the bottom plate 4, a rotating shaft 10 is passed between the bearing seats 6, the rotating shaft 10 is located on one side of the bearing seat 6 and a gear 11 is mounted, the gear 11 is engaged with the rack 9; both ends of the rotating shaft 10 are connected to a clamping arm 12, and the clamping arm 12 is connected to the box cover 13 of the box body 2.

[0028] The utility model has an ingenious structural design. The clamping arm clamps the box cover and the fatigue test unit drives the clamping arm, so that the clamping arm drives the box cover to open and close at a certain angle, completing the intelligent opening and closing of the box cover at a uniform speed for more than hundreds of thousands of times, thereby completing the opening and closing fatigue test of the box cover.

[0029] The end of the rotating shaft 10 is connected to a slider 14, and a guide rail 15 is set at the rear end of the clamping arm 12. The slider 14 and the guide rail 15 cooperate to control the displacement movement of the connection between the clamping arm 12 and the box cover 13 when the box cover is opened, so as to avoid interference caused by different tilting progress of the clamping arm and the rear end of the box cover affecting the opening of the box cover.

[0030] A lifting unit is provided at the rear end of the fatigue test unit 3, and the lifting unit includes support rods 16 installed at the four corners of the base 1. A double-screw elevator 17 is installed at the top of the support rod 16. The screws 18 of the double-screw elevator 17 are sequentially inserted into the base plate 4 and the base 1, and are respectively connected to the base plate 4 and the base 1 through screw nuts 20 and screw base bearings 19. Since military boxes and folding boxes have different height dimensions, the lifting unit drives the lifting of the fatigue test unit to complete the matching of different height dimensions, thereby being suitable for fatigue opening and closing tests of different military boxes and folding boxes.

[0031] A dust cover 21 is provided on the bottom plate 4 of the fatigue test unit 3, which not only prevents dust from entering the fatigue test unit and affecting the normal use of components, but also has an aesthetic and safety effect, ensuring operational safety.

[0032] Casters 22 are provided at the four corners of the base 1 to facilitate the movement and transportation of the test device and save manpower.

[0033] The working principle of this utility model is:

[0034] The opening and closing requirement of the box is that the box lid is flipped 110°~120° to test the fatigue strength of the steel wire rope connecting the opening and closing of the box, or the folding limit fatigue number of the folding box. The driving motor provides rotational motion, which is converted into linear motion of the rack by driving the crank block and the connecting rod. The rack drives the gear to convert it into reciprocating rotation of the shaft. The rotation diameter of the crank block can be calculated to convert it into the reciprocating motion path distance of the rack, and then this linear distance is converted into the rotation circumference through the gear to calculate the corresponding rotation angle of the shaft. This angle is controlled within the range that the box can be fully opened. Sliders and slide rails are installed on the end of the clamp arm to control the displacement of the connection between the box lid and the clamp arm when the box lid is opened, thereby realizing the fatigue test requirements of intelligent opening and closing of the box.

[0035] Military boxes and folding boxes have different height specifications, so the overall fatigue test unit is required to be adjustable in height. The double-screw elevator is fixed to the base through the screw nut and the screw base bearing. The height of the fatigue test unit can be adjusted by driving the double-screw elevator, thereby adapting to the fatigue opening and closing tests of different military boxes and folding boxes.

[0036] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will understand that various replacements, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A box cover opening and closing fatigue testing device, characterized by: The invention comprises a base (1), a box body (2) is placed at the front end of the base (1), a fatigue test unit (3) is arranged at the rear end of the base (1), and the fatigue test unit (3) comprises a bottom plate (4), a drive motor (5) and a bearing seat (6). The rear end of the bottom plate (4) is fixedly mounted with the drive motor (5), the output shaft end of the drive motor (5) is fixedly connected to a crank block (7), the end of the crank block (7) is rotatably connected to a connecting rod (8), and the end of the connecting rod (8) is rotatably connected to a rack (9); the bearing seats (6) are symmetrically mounted on both sides of the front end of the bottom plate (4), a rotating shaft (10) is passed through the bearing seats (6), a gear (11) is mounted on one side of the rotating shaft (10) located inside the bearing seat (6), and the gear (11) is meshed with the rack (9); both ends of the rotating shaft (10) are connected to clamping arms (12), and the clamping arms (12) are connected to a box cover (13) of the box body (2).

2. The box cover opening and closing fatigue testing device according to claim 1, characterized in that: The end of the rotating shaft (10) is connected to a slider (14), and a guide rail (15) is provided at the rear end of the clamping arm (12). The slider (14) and the guide rail (15) cooperate to control the displacement movement of the connection between the control box cover (13) and the clamping arm (12) when the control box cover (13) is opened.

3. The box cover opening and closing fatigue testing device according to claim 1, characterized in that: A lifting unit is provided at the rear end of the fatigue test unit (3), and the lifting unit includes support rods (16) installed at the four corners of the base (1). A double-screw lift (17) is installed at the top end of the support rods (16). The screws (18) of the double-screw lift (17) are sequentially inserted into the base plate (4) and the base (1), and are respectively connected to the base plate (4) and the base (1) through screw nuts (20) and screw base bearings (19).

4. The box cover opening and closing fatigue testing device according to claim 1, characterized in that: A dust cover (21) is provided on the bottom plate (4) of the fatigue testing unit (3).

5. The box cover opening and closing fatigue testing device according to claim 1, characterized in that: Casters (22) are provided at the four corners of the base (1).

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