Novel device for testing the strength of a container

Abstract

Novel device for container strength test belongs to the technical field of detection equipment, including battery, electric push rod, shell, pressure sensor, indicating meter, also has buffer mechanism, prompting circuit; Buffer mechanism includes sleeve, movable rod, spring, sleeve lower end has shaft hole, the upper end of movable rod is fixedly installed with guide block, battery, shell, pressure sensor, indicating meter, buffer mechanism, prompting circuit and electric push rod are installed together. The new type can make the upper locating seat and the lower locating seat contact the upper and lower ends or the left and right ends of the container by adjusting the electric push rod, so that the staff can conveniently detect the skin strength of the container within a certain time based on the set strength threshold, and can prompt the staff in the first time when the strength of the corresponding position is unqualified. The new type brings convenience to the staff and can achieve better detection effect.

Description

Technical Field

[0001] This utility model relates to the field of container inspection equipment technology, and in particular to a novel device for testing the strength of containers. Background Technology

[0002] A shipping container is a modular tool used to transport packaged or unpackaged goods, facilitating loading and unloading by mechanical equipment. The greatest advantage of containers lies in their standardization and the resulting comprehensive transportation system. Standardization allows for the transport of containers with a load capacity of tens of tons, and based on this, a global logistics system integrating ships, ports, shipping routes, highways, transit stations, bridges, tunnels, and multimodal transport is gradually being established, greatly improving logistics efficiency.

[0003] The strength of a shipping container is a crucial indicator; substandard materials can pose safety hazards during cargo transport. Currently, there is no dedicated equipment for testing the strength of container skins. Experienced personnel typically assess strength visually by checking the skin thickness and the appearance of relevant areas (such as the lower center and sides) for deformation. However, this method is not intuitive, and newly installed containers do not exhibit deformation, so the data does not accurately reflect the skin's strength. Therefore, providing a device that can directly and intuitively test the strength of container skins is essential. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, such as the lack of a suitable skin strength testing device for containers, as described in the background art, this utility model provides a novel container strength testing device that allows workers to conveniently test the skin strength of containers at any position on the top, bottom, left, and right sides of the container within a certain time based on a set strength threshold under the action of a relevant structure. When the strength of a corresponding position is found to be substandard, the device can immediately alert the workers, thus providing convenience and achieving better testing results.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A novel device for testing the strength of containers includes a battery, an electric push rod, a housing, a pressure sensor, and an indicator. It also features a buffer mechanism and a warning circuit. A connecting rod is fixedly mounted on the upper end of the outer cylinder of the electric push rod, and the upper end of the connecting rod is fixedly connected to the force-bearing surface of the pressure sensor. An upper positioning seat is fixedly mounted on the upper end of the pressure sensor housing. The buffer mechanism includes a sleeve, a movable rod, and a spring. The lower end of the sleeve has a shaft hole, and a guide block is fixedly mounted on the upper end of the movable rod. The spring and guide block are movably fitted inside the sleeve from top to bottom. A lower positioning seat is fixedly mounted on the lower end of the movable rod. The upper end of the sleeve is fixed to the lower end of the movable rod of the electric push rod. The battery, warning circuit, and indicator are installed in a component box, which is fixedly mounted on the side end of the connecting rod. The signal output terminal of the pressure sensor is electrically connected to the power input terminal of the indicator and warning circuit.

[0006] Furthermore, the outer diameter of the guide block is smaller than the inner diameter of the sleeve, and the outer diameter of the movable rod is smaller than the inner diameter of the shaft hole.

[0007] Furthermore, a handle is fixedly installed on the outer side of the cylinder of the electric push rod.

[0008] Furthermore, the indicator is a liquid crystal voltage display.

[0009] Furthermore, the prompting circuit includes an adjustable resistor, a resistor, a transistor, an alarm, and a relay that are electrically connected. The positive power input terminal of the relay is connected to the control power input terminal. One end of the first adjustable resistor is connected to one end of the first resistor and the base of the transistor. The collector of the transistor is connected to the negative power input terminal of the relay. The emitter of the transistor is connected to the other end of the two resistors and the negative power input terminal of the alarm. The normally closed contact of the relay is connected to the positive power input terminal of the alarm. One end of the second adjustable resistor is connected to one end of the second resistor, and the other ends of the two adjustable resistors are connected.

[0010] Compared with existing technologies, the advantages of this invention are as follows: Under the action of its related structure, by adjusting the length of the movable column of the electric push rod, the upper and lower positioning seats can respectively contact the upper and lower ends or the left and right ends of the container. This allows workers to conveniently inspect any position on the container's skin at the upper, lower, left, and right ends. Through the action of pressure sensors and indicator circuits, the strength of the container skin can be detected within a certain time based on a set strength threshold. When the strength at a corresponding position is found to be substandard, the indicator circuit can immediately alert the workers. This invention brings convenience to workers and achieves better inspection results. Therefore, this invention has good application prospects. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1This is a schematic diagram of the utility model and the container structure.

[0013] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 3 This is a partial structural schematic diagram of the present invention.

[0015] Figure 4 This is the circuit diagram of this utility model. Detailed Implementation

[0016] Figure 1 , 2 As shown in Figures 3 and 4, the novel device for testing the strength of containers includes a battery G1, an electric push rod M1, a housing 1, a pressure sensor A1, a power switch S1, a charging socket CZ, and an indicator V. It also has a buffer mechanism 2 and a prompting circuit 3. A connecting rod 4 is fixedly installed on the upper end of the outer shell of the electric push rod M1. The upper end of the connecting rod 4 is fixedly connected to the force-bearing surface of the pressure sensor A1. An upper positioning seat 5 is fixedly installed on the upper end of the housing of the pressure sensor A1. The buffer mechanism includes a sleeve 21, a movable rod 22, and a spring 23. A shaft hole 211 is located in the middle of the lower end of the sleeve 21. A guide block 212 is fixedly installed on the upper end of the movable rod 22. The spring 23 and the guide block 212 are movably fitted inside the sleeve 21 from top to bottom, and the movable rod 22 is movably located within the shaft hole 211. The lower end of the movable rod 22 is fixedly installed... A lower positioning seat 221 is installed; the upper end of the sleeve 21 is fixed to the lower end of the movable column of the electric push rod M1. The battery G1, charging socket CZ, power switch S1, indicator circuit 3, and indicator V are installed in the component box 6, which is fixedly installed on the front outer end of the connecting rod 4. The two poles of the battery G1 and the two ends of the charging socket CZ are connected by wires (when the battery G1 is depleted, the power charger plug is inserted into the charging socket to charge the battery G1), and connected in series with the power switch S1 and the pressure sensor A1, the power input terminal of the indicator circuit, the positive power input terminal of the relay J, the emitter of the transistor Q1, and the power input terminals 1 and 2 of the power switch S2 by wires. The signal output terminal 3 of the pressure sensor A1 and the signal input terminal of the indicator circuit are connected by wires to the other ends of the adjustable resistors R1 and R3. The power input terminal of the indicator V and the other ends of the adjustable resistors R3 and R4 are connected by wires. The power output terminals 3, 4 and 5, 6 of the power switch S2 are connected to the positive and negative and negative and positive power input terminals of the electric push rod M1 via wires.

[0017] Figure 1 , 2 As shown in Figures 3 and 4, the outer diameter of the guide block 212 is smaller than the inner diameter of the sleeve 21, and the outer diameter of the movable rod 22 is smaller than the inner diameter of the shaft hole 211.

[0018] A handle 7 is fixedly installed on the middle of the outer side of the cylinder of the electric actuator M1. The indicator V is a liquid crystal voltage display meter. The display surface of the indicator V, the power switches S1 and S2, and the socket of the charging socket CZ are located outside the four openings at the front of the component box 6. The prompting circuit includes adjustable resistors R1 and R3, resistors R2 and R4, transistor Q1, alarm BX, and relay J connected by circuit board wiring. The positive power input terminal of relay J is connected to the control power input terminal. One end of adjustable resistor R1 is connected to one end of resistor R2 and the base of transistor Q1. The collector of transistor Q1 is connected to the negative power input terminal of relay J. The emitter of transistor Q1 is connected to the other end of resistors R2 and R4 and the negative power input terminal of alarm BX. The normally closed contact of relay J1 is connected to the positive power input terminal of alarm BX. One end of adjustable resistor R3 is connected to one end of resistor R4. The other ends of adjustable resistors R3 and R1 are connected.

[0019] Figure 1 , 2As shown in Figures 3 and 4, in actual use, when the power switch S1 is turned on, the power switch S2, pressure sensor A1, and indicator circuit are energized. The upper positioning seat 5 and lower positioning seat 221 are aligned with the upper / lower or left / right ends of the detection position of container image 1, respectively. Then, the handle of the power switch S2 is moved to the left, connecting pins 1 and 2 and pins 3 and 4 of the power switch S2. This energizes the positive and negative power input terminals of the electric push rod M1, causing the movable column of the electric push rod M1 to push the lower positioning seat 221 downwards or to the left. After a period of time, the upper positioning seat 5 and lower positioning seat 221 will contact the upper / lower or left / right ends of the inner skin of the container, respectively. When the upper positioning seat 5 and the lower positioning seat 221 contact the upper and lower ends or the left and right ends of the inner skin of the container respectively, the electric push rod M1 will be subjected to the reverse action of the lower contact seat 221. The force surface of the pressure sensor A1 will detect the reverse force. The greater the force of the upper positioning seat 5 and the lower positioning seat 221 contacting the container skin, the higher the voltage signal output by pin 3 of the pressure sensor A1, and vice versa. The voltage signal output by pin 3 of the pressure sensor A1 (and enters the power input terminal of the voltmeter V through the voltage divider of the adjustable resistor R3 and resistor R4) enters the base of the transistor Q1 through the voltage divider of the adjustable resistor R1 and resistor R2. The tester visually observes the data displayed by the voltmeter V. When the data displayed by the voltmeter V is consistent with the strength data set for the inner skin of container 1 (for example, the designed strength data is 0.05MP, and the data displayed by the voltmeter is 0.050V), the operator turns off the power switch S2 and enters the test process. In actual testing, at the initial stage of the test or at a certain interval (e.g., 10 minutes, testing the strength of the container within 10 minutes), if there is no outward deformation at the left and right ends or top and bottom ends of the test position (that is, when the skin quality meets the standard, the skin at the test position does not bulge outward), the pressure on the force-bearing surface of the pressure sensor is relatively large. The voltage signal output by its pin 3 is divided by the adjustable resistors R1 and R2 and enters the base voltage of transistor Q1, which is higher than 0.7V. Transistor Q1 conducts, and the collector outputs a low level, which enters the negative power input terminal of relay J. Relay J is energized and its control power input terminal and normally closed contact terminal are open. The corresponding alarm BX will not be energized and will sound, indicating that the skin quality at the test position is qualified.During the initial stage of the test or at certain intervals, if there is outward deformation at the left or right or top or bottom of the test position (that is, when the skin quality is substandard, the skin at the test position bulges outward), the force exerted by the lower positioning seat 221 on the pressure sensor A1 through the spring 23 will decrease (the spring 23 pushes the lower positioning seat to move to the left or downward). The pressure on the pressure sensor's surface is relatively small, and the voltage signal output from its pin 3 is divided by the adjustable resistors R1 and R2 and enters the base voltage of the transistor Q1, which is lower than 0.7V. The transistor Q1 is cut off, and the collector no longer outputs a low level to the negative power input terminal of the relay J. The relay J is de-energized and no longer engages, closing its control power input terminal and normally closed contact terminal. The corresponding alarm BX will be energized and sound, indicating that the strength of the corresponding position of the tested container skin is insufficient. After the test, the staff used their fingers to move the handle of the power switch S2 to the right, connecting pins 1 and 2 and pins 5 and 6 of the power switch S2 respectively. This energizes the positive and negative power input terminals of the electric push rod M1, causing the movable column of the electric push rod M1 to move the lower positioning seat 211 upward or to the left, etc. After a period of time, the upper positioning seat 5 and the lower positioning seat 221 will be spaced apart from the upper and lower or left and right ends of the inner skin of the container, respectively. The testing personnel can then remove the testing equipment to complete all the testing work (the staff moves the position by carrying the handle 7).

[0020] Figure 1 , 2As shown in Figures 3 and 4, through the above-described method, the new invention, by adjusting the length of the movable column of the electric push rod, allows the upper and lower positioning seats to contact the upper and lower ends or the left and right ends of the container respectively. This allows the operator to conveniently test the container skin at any position on the upper and lower ends and the left and right ends of the container skin through the action of pressure sensors and prompting circuits, within a certain time based on the set strength threshold. When the strength of the corresponding position is found to be unqualified, the prompting circuit can immediately alert the operator, bringing convenience to the operator and achieving better testing results. (If the skin strength is insufficient and outward deformation occurs in the initial stage, the number displayed on the voltmeter is the set test threshold data. After the subsequent testing personnel remove the equipment, they can visually observe the two stress points of the container. If outward deformation occurs on one or both sides, it means that the strength of the tested skin is unqualified.) The pressure sensor is a planar force-measuring load cell, model HZC-30A, with two power input terminals and one signal output terminal; the relay J is a DC12V relay; the battery G1 is a 12V / 15Ah lithium battery; the alarm BX is an active continuous audible alarm, model MF12V; the electric actuator M is a 100W reciprocating electric actuator; the voltmeter V is a 12V LCD voltage display meter; the transistor Q1 is a 9013 (NPN type); the adjustable resistors R1 and R3 have a resistance of 47KΩ (adjusted to 11.3KΩ and 11.9KΩ respectively in this embodiment); the adjustable resistors R2 and R4 have a resistance of 1.4KΩ and 100Ω respectively. Under actual testing conditions, the lower positioning seat and the upper positioning seat are in contact with... When the voltmeter reading reaches the set test threshold force (the test threshold force is set by the tester based on the container skin condition) at the top, bottom, left, or right end of the container, the tester adjusts the handle of adjustable resistor R1 to the right, increasing the voltage drop across resistor R2. When relay J is de-energized and alarm BX sounds, the tester slightly adjusts the handle of adjustable resistor R1 to the left, decreasing the voltage drop across resistor R2. When relay J is energized and alarm BX is de-energized and silent, the normal testing process can begin. During subsequent testing, when the skin at the testing location deforms, alarm BX will be energized and sound. (The electronic components used in this application are all mature products, so their working principles and structures are not described in unnecessary detail.) It should also be noted that this new design uses a spring. Due to its elastic force, even if the skin at the testing location deforms outwards, it ensures that the upper and lower positioning seats contact the corresponding positions of the container's inner skin, preventing the equipment and container from separating and falling apart, causing damage. Furthermore, when the spring is compressed on the force-bearing surface of the pressure sensor A1 via the electric push rod, although the spring absorbs some of the force, after the spring is compressed, the spring height is relatively low and the elastic force becomes larger. Consequently, the force acting on the force-bearing surface of the pressure sensor A1 also becomes higher. Therefore, it does not affect the deformation detection work of the pressure sensor and other devices at the container skin detection position.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0022] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel device for testing the strength of containers, comprising a battery, an electric push rod, a housing, a pressure sensor, and an indicator, characterized in that, It also features a buffer mechanism and a prompting circuit. A connecting rod is fixedly installed on the upper end of the outer cylinder of the electric push rod, and the upper end of the connecting rod is fixedly connected to the force-bearing surface of the pressure sensor. An upper positioning seat is fixedly installed on the upper end of the housing of the pressure sensor. The buffer mechanism includes a sleeve, a movable rod, and a spring. The lower end of the sleeve has a shaft hole, and a guide block is fixedly installed on the upper end of the movable rod. The spring and the guide block are movably fitted inside the sleeve from top to bottom. A lower positioning seat is fixedly installed on the lower end of the movable column. The upper end of the sleeve is fixed to the lower end of the movable column of the electric push rod. The battery, prompting circuit, and indicator are installed in a component box, which is fixedly installed on the side end of the connecting rod. The signal output terminal of the pressure sensor is electrically connected to the power input terminal of the indicator and the prompting circuit.

2. The novel device for testing the strength of containers according to claim 1, characterized in that, The outer diameter of the guide block is smaller than the inner diameter of the sleeve, and the outer diameter of the movable rod is smaller than the inner diameter of the shaft hole.

3. The novel device for testing the strength of containers according to claim 1, characterized in that, A handle is fixedly installed on the outside of the cylinder of the electric actuator.

4. The novel device for testing the strength of containers according to claim 1, characterized in that, The indicator is a liquid crystal voltage display.

5. The novel device for testing the strength of containers according to claim 1, characterized in that, The alarm circuit includes an adjustable resistor, a resistor, a transistor, an alarm, and a relay, all electrically connected. The positive power input terminal of the relay is connected to the control power input terminal. One end of the first adjustable resistor is connected to one end of the first resistor and the base of the transistor. The collector of the transistor is connected to the negative power input terminal of the relay. The emitter of the transistor is connected to the other end of the two resistors and the negative power input terminal of the alarm. The normally closed contact of the relay is connected to the positive power input terminal of the alarm. One end of the second adjustable resistor is connected to one end of the second resistor, and the other ends of the two adjustable resistors are connected to...

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