Container waterproof test mechanism
The container waterproof testing mechanism, which uses components such as wireless remote control equipment and electric linear slide, solves the safety risks of workers operating at heights in container leakage detection and achieves convenience and safety in multi-sided water spray testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI YUECHANG CONTAINER TECHNICAL SERVICE CO LTD
- Filing Date
- 2025-06-10
- Publication Date
- 2026-05-05
AI Technical Summary
In existing technologies, container leak detection requires workers to hold water hoses and work at heights, which poses safety risks and is inconvenient.
A container waterproofing testing mechanism was designed, which uses components such as wireless remote control equipment and electric linear slide to adjust the angle and height of the nozzles, allowing staff to control the position and direction of the water spray pipes from the ground, avoiding the need for climbing to operate.
It reduces the safety risks of staff climbing to heights, improves the convenience and safety of inspection, and enables effective water spray inspection on multiple sides of the container.
Smart Images

Figure CN224202656U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of container inspection equipment technology, and in particular to a container waterproof testing mechanism. 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] Whether the outer shell (skin) of a shipping container leaks directly affects the safety of the cargo it carries. Therefore, after a period of use, technicians will test for leaks. Specifically, during the test, the container is placed in a testing area, and technicians use handheld water hoses to spray water onto the top and sides of the container. Other technicians inside the container visually inspect for leaks (the leak points are the points of damage). Once a leak is found, repairs can be made. While manually spraying water with a handheld hose fulfills the need for container water testing to some extent, the structure of the hose, especially when spraying the top and outer sides of the container, presents challenges. Due to the container's height, workers typically need to stand on high stools or even directly on top of the container to spray water, which is inconvenient and carries the risk of falls. Utility Model Content
[0004] To overcome the shortcomings of existing technologies, such as the lack of a suitable water spraying device for detecting leaks in containers, as described in the background art, this utility model provides a container waterproofing testing mechanism that, through the combined action of related structures, allows workers to wirelessly control the angle of the nozzle to the left, right, front, rear, or top end from the ground without needing to climb, and also allows for adjustment of the nozzle height within a certain range. This provides convenience for workers and correspondingly reduces safety risks.
[0005] The technical solution adopted by this utility model to solve its technical problem is:
[0006] The container waterproof testing mechanism includes a wireless remote control device, an electric linear slide, support columns, a water spray pipe, wheel equipment, and rails. It also includes a wireless receiving circuit and adjustment equipment. There are at least two rails, longitudinally distributed and fixedly installed on the ground in the testing area. There are at least two sets of wheel equipment and support columns. Each set of wheel equipment includes a motor reducer, a wheel, and a fixed base. There are at least two wheels, one of which is rotatably mounted on the lower rear end of the fixed base, and the other wheel is fixedly mounted to one side of the motor reducer's shaft. The motor reducer's housing is fixedly mounted on the lower front end of the fixed base. The lower ends of the two sets of support columns are fixedly mounted on the upper ends of the two sets of fixed bases. The lower ends of both sides of the electric linear slide are fixedly mounted on the upper ends of the two sets of support columns. The wheels of the two sets of wheel equipment are respectively mounted on two rails. The adjustment equipment includes a motor reducer A, an electric push rod, and an electromagnetic... There are two sets of valves and motor reducers A. The upper end of the housing of one set of motor reducers A is vertically and fixedly installed at the lower end of the sliding block of the electric linear slide table. The upper end of the electric push rod is vertically and fixedly installed at the lower end of the rotating shaft of the first set of motor reducers A. The lower end of the electric push rod is vertically and fixedly installed with a fixing plate. The rear end of the housing of the second set of motor reducers A is horizontally and fixedly installed at the front end of the fixing plate. One side of the water spray pipe is a closed structure. The rear end of one side of the water spray pipe is fixedly installed together with the front end of the rotating shaft of the second set of motor reducers A. The other side of the water spray pipe is fixedly connected to one end of the solenoid valve. The other end of the solenoid valve is fixedly connected to a nozzle. The wireless receiving circuit is installed in the component box. The multi-channel power output terminal of the wireless receiving circuit is electrically connected to the power input terminals of the motor reducers of the two sets of wheel equipment, the motor of the electric linear slide table, the electric push rod, the two sets of motor reducers A, and the solenoid valve.
[0007] Furthermore, the wheels of the two sets of wheel devices are made of metal, and limit plates are fixedly installed on both sides of each wheel. The limit plates of the two wheels of each set of wheel devices are located on both sides of the upper end of the track, and the distance between the inner sides of the two limit plates is greater than the width of the upper end of the track.
[0008] Furthermore, a connecting pipe is fixedly installed on one side of the upper end of the water spray pipe, and the side end of the connecting pipe is connected to the tap water pipe via a rubber hose with a length allowance.
[0009] Furthermore, the wheels of the two sets of wheel devices can be installed without limiting plates, allowing the wheels to directly contact the ground.
[0010] Furthermore, the inner distance between the two sets of supports is greater than the left and right width of the container, and when the water spray pipe is in a vertical state, the distance between the lower end of the water spray pipe and the outer side of the upper end of the container is greater.
[0011] Furthermore, the wireless receiving circuit includes an electrically connected wireless receiving circuit module and ten relays. The multi-channel power output terminal of the wireless receiving circuit module is connected to the positive power input terminal of the ten relays and the positive power input terminal of the solenoid valve, respectively. The positive power input terminal of the wireless receiving circuit module is connected to the positive control power input terminal of the ten relays. The negative power input terminal and negative control power input terminal of the ten relays are connected to the negative power input terminal of the wireless receiving circuit module and the negative power input terminal of the solenoid valve.
[0012] Compared with existing technologies, the advantages of this invention are as follows: Due to the structure of this invention, workers do not need to climb to a height. They can control the nozzle angle to the left, right, front, rear, or top end via wireless remote control equipment and a wireless receiving circuit from the ground. The nozzle height can also be adjusted within a certain range. This allows for water spraying operations on the left and right sides, front and rear sides, and top of the container, thus providing convenience for workers and reducing the safety risk of falls from heights. Therefore, this invention has good application prospects. Attached Figure Description
[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0014] Figure 1 This utility model is shown in the overall structural diagram.
[0015] Figure 2 Circuit diagram of this utility model. Detailed Implementation
[0016] Figure 1 , 2As shown, the container waterproof testing mechanism includes a power module A1, a wireless remote control device A3, a long-stroke electric linear slide M1, support columns 1, a water spray pipe 2, wheel devices 3, and rails 4. It also has a wireless receiving circuit 5 and an adjustment device. There are two rails 4, which are longitudinally distributed and fixedly installed on the ground of the testing area. There are two identical sets of wheel devices 3 and support columns 1. Each set of wheel devices includes a motor reducer M2, a wheel 31, and a fixed seat 32. There are two wheels 31. One wheel 31 is rotatably installed on the lower rear end of the fixed seat 32, and the middle part of the other wheel 31 is fixedly installed together with one side of the rotating shaft of the motor reducer M2. The housing of the motor reducer M2 is fixedly installed on the lower front end of the fixed seat 32. The two wheels 31 are in a straight line longitudinally. The lower ends of the two sets of support columns 1 are fixedly installed on the middle of the upper ends of the two sets of fixed seats 32. The lower ends of both sides of the electric linear slide M1 are fixedly installed on the upper ends of the two sets of support columns 1, and its sliding block is located on the lower side. The wheels 31 of the two sets of wheel devices are respectively set on two rails 4. The adjustment equipment includes motor reducers AM3 and M4, electric push rod M5, and solenoid valve DC. There are two sets of motor reducers AM3 and M4. The upper end of the housing of one set of motor reducers AM3 is vertically fixedly installed on the lower end of the sliding block of the electric linear slide M1. The upper end of the cylinder of the electric push rod M5 is vertically fixedly installed on the lower end of the rotating shaft of the first set of motor reducers AM3. A fixing plate 6 is vertically fixedly installed on the lower end of the movable column of the electric push rod M5. The rear end of the housing of the second set of motor reducers AM4 is horizontally fixedly installed on the front end of the fixing plate 6. One side of the water spray pipe 2 is a closed structure. The rear end of one side of the water spray pipe 2 is fixedly installed together with the front end of the rotating shaft of the second set of motor reducers AM4. The other side of the water spray pipe 2 is "L" shaped. The other side of the water spray pipe 2 is fixedly connected to one end of the solenoid valve DC by a thread. The other end of the solenoid valve DC is fixedly connected to a nozzle 7 by a thread. The wireless remote control device A3 is carried by the technician. The power module A1 and the wireless receiving circuit 5 are installed in the component box 8 at the outer end of the fixed seat of the left set of wheel equipment.
[0017] Figure 1 , 2As shown, the wheels 31 of the two sets of wheel equipment are made of metal. A circular limiting plate 311 is fixedly installed on each side of each wheel 31 (to prevent the wheel from falling off the track). The distance between the inner sides of the two limiting plates 311 is greater than the width of the upper end of the track 4, and the limiting plates 311 of the two wheels of each set of wheel equipment are located on both sides of the upper end of the track 4. A connecting pipe 9, communicating with the interior of the water spray pipe 2, is fixedly installed on one side of the upper end. The side end of the connecting pipe 9 is connected to a water pipe (not shown in the figure) via a flexible rubber tube 10 with sufficient length. Alternatively, the wheels 31 of the two sets of wheel equipment can be installed without limiting plates, with rubber rims fixedly installed on the outer side of the wheels 31, allowing the wheels 31 to directly contact the ground. The distance between the inner sides of the two sets of supports 1 is greater than the left and right width of the container (longitudinal distribution, not shown in the figure). When the water spray pipe 2 is in a vertical state, the distance between the lower end of the water spray pipe 2 and the upper outer side of the container is... The wireless receiving circuit includes a wireless receiving circuit module A2 connected via circuit board wiring and ten relays J1, J2, J3, J4, J5, J6, J7, J8, J9, and J10; the power output terminals 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, and 13 of the wireless receiving circuit module A2 and the positive power input terminals of the ten relays J1, J2, J3, J4, J5, J6, J7, J8, J9, and J10; and the positive power input terminal of the solenoid valve DC. The input terminals are connected as follows: the positive power input terminal 1 of the wireless receiver circuit module is connected to the positive control power input terminals of ten relays J1, J2, J3, J4, J5, J6, J7, J8, J9, and J10; the negative power input terminals and negative control power input terminals of ten relays J1, J2, J3, J4, J5, J6, J7, J8, J9, and J10 are connected to the negative power input terminal 2 of the wireless receiver circuit module A2 and the negative power input terminal of the solenoid valve DC.
[0018] Figure 1 , 2As shown, the power input terminals 1 and 2 of power module A1 are connected to the two poles of the 220V AC power supply via wires. The power output terminals 3 and 4 of power module A1 are connected to the power input terminals 1 and 2 of wireless receiving circuit module A2 via wires. The normally open contacts of relays J1 and J2 are connected to the positive and negative power input terminals of the electric linear slide M1 via wires. The normally open contacts of relays J3 and J4 are connected to the positive and negative power input terminals of the motor reducer M2 of the two sets of wheel equipment via wires. The normally open contacts of relays J5 and J6 are connected to the positive and negative power input terminals of the first set of motor reducer AM3 via wires. The normally open contacts of relays J7 and J8 are connected to the positive and negative power input terminals of the second set of motor reducer AM4 via wires. The normally open contacts of relays J9 and J10 are connected to the positive and negative power input terminals of the electric push rod M5 via wires. Relays J1, J2, J3, J4, J5, J6, J7, J8, J9, and J10 are DC24V; Electric linear actuator M5 is a 100W reciprocating electric linear actuator; Motor reducer M2 is a 1.2KW coaxial motor reducer; Motor reducers AM3 and M4 are 200W coaxial motor reducers; Electric linear slide M1 is a 280W electric ball screw slide; Power module A1 is an AC 220V to DC 24V power module; Wireless remote control device A3 and wireless receiving circuit module A2 are RF12 12-channel wireless remote control and receiving components, with a wireless signal transmission and reception distance of 50 meters (functionally identical to automotive wireless remote control receiving devices); Solenoid valve DC is a 2W normally closed valve core solenoid valve.
[0019] Figure 1 , 2As shown, after the 220V AC power enters the power input terminal of the power module A1, pins 3 and 4 of the power module A1 output a stable 24V DC power to the power input terminal of the wireless receiving circuit. Before testing, the staff places the container between the two tracks 4 using a crane or forklift. Specifically, the staff presses the first button D1 or the second button D2 of the wireless remote control device A3. The wireless remote control device A3 transmits the first or second wireless closed signal. After receiving the signal, the wireless receiving circuit module A2 outputs a high level from pin 3 or 4, which enters the positive power input terminal of relay J1 or J2. The relay J1 or J2 is energized and its control power input terminal and normally open contact terminal close. Consequently, the positive and negative or negative and positive power input terminals of the motor of the electric linear slide M1 are energized. The sliding block of the electric linear slide M1 drives the water spray pipe, etc., to move to the left or right position of the container. When the water spray pipe moves to the left or right position, When the operator presses the first button D1 or the second button D2 of the wireless remote control device A3 again, the wireless remote control device A3 transmits the first or second wireless open-circuit signal. After receiving the signal, the wireless receiving circuit module A2 stops outputting a high level at pin 3 or 4 and enters the positive power input terminal of relay J1 or J2. The relay J1 or J2 is no longer energized and its control power input terminal and normally open contact terminal are open. Consequently, the positive and negative or negative and positive power input terminals of the motor of the electric linear slide M1 are de-energized, and the sliding block of the electric linear slide M1 no longer drives the water spray pipe to move to the left or right. Subsequently, the water spray pipe is in the corresponding position to spray water on the container. When an operator presses the third button (D3 or D4) on the wireless remote control device A3, the device emits a third or fourth wireless closed signal. Upon receiving this signal, the wireless receiving circuit module A2 outputs a high-level signal from pin 5 or 6, which enters the positive power input terminal of relay J3 or J4. Relay J3 or J4 is energized, closing its control power input terminal and normally open contact. This energizes the positive and negative (or negative-positive) power input terminals of the motor reducer M2 for both sets of wheeled equipment. The shaft of motor reducer M2 drives the wheels 31 to rotate counterclockwise or clockwise. Thus, the wheels of the two sets of wheeled equipment move the entire equipment forward or backward along track 4, causing the water spray pipes and other components to move forward or backward towards the front of the container. Or the rear position; after the water spray pipe has moved to the front or rear position, the operator presses the third button D3 or the fourth button D4 of the wireless remote control device A3 with their finger again. The wireless remote control device A3 transmits the third or fourth wireless open circuit signal. After the wireless receiving circuit module A2 receives it, its 5 or 6 pins stop outputting a high level and enter the positive power input terminal of the relay J3 or J4. The relay J3 or J4 is no longer energized and its control power input terminal and normally open contact terminal are open. As a result, the positive and negative or negative and positive power input terminals of the motor reducer M2 are de-energized, and the shaft of the motor reducer M2 no longer drives the water spray pipe to move forward or backward. The subsequent water spray pipe is in the corresponding position to spray water on the container.
[0020] Figure 1 , 2 As shown, when an operator presses the fifth button D5 or the sixth button D6 of the wireless remote control device A3, the device emits a fifth or sixth wireless closed signal. Upon receiving this signal, the wireless receiving circuit module A2 outputs a high-level signal from pin 7 or 8, which enters the positive power input terminal of relay J5 or J6. Relay J5 or J6 is energized, closing its control power input terminal and normally open contact. This energizes the positive and negative or negative and positive power input terminals of the first set of motor reducers AM3. The shaft of the first set of motor reducers AM3 can then drive the nozzle to rotate nearly 360 degrees vertically, allowing the water spray pipe to rotate to the left or right side, front or rear of the container. When the first set of motor reducers AM3 rotates... After the shaft drives the nozzle to rotate to the correct position at multiple angles, the operator presses the fifth button D5 or the sixth button D6 of the wireless remote control device A3 again. The wireless remote control device A3 transmits the fifth or sixth wireless open-circuit signal. After the wireless receiving circuit module A2 receives the signal, its pin 5 or 6 stops outputting a high level and enters the positive power input terminal of the relay J5 or J6. The relay J5 or J6 is no longer energized and its control power input terminal and normally open contact terminal are open. Consequently, the positive and negative or negative and positive power input terminals of the first set of motor reducers AM3 are de-energized, and the shaft of the first set of motor reducers AM3 no longer drives the water spray pipe and other vertical movements. The subsequent water spray pipes are in the corresponding positions to spray water onto the container. When an operator presses the seventh button (D7) or the eighth button (D8) of the wireless remote control device A3, the device emits a seventh or eighth wireless closed signal. Upon receiving this signal, the wireless receiving circuit module A2 outputs a high-level signal from pin 7 or 8, which enters the positive power input terminal of relay J7 or J8. Relay J7 or J8 is energized, closing its control power input terminal and normally open contact. This energizes the positive and negative or negative and positive power input terminals of the second set of motor reducers AM4. The shaft of the second set of motor reducers AM4 can then drive the nozzles to rotate nearly 360 degrees horizontally, allowing the water spray pipes to rotate to the left or right side of the container (including front or rear positions). When the second set of motor reducers AM4... After the rotating shaft of device 4 drives the nozzle to rotate to the correct position at multiple angles, the operator presses the fifth button D5 or the sixth button D6 of the wireless remote control device A3 with their finger. The wireless remote control device A3 transmits the fifth or sixth wireless open-circuit signal. After the wireless receiving circuit module A2 receives the signal, its pin 5 or 6 stops outputting a high level and enters the positive power input terminal of relay J7 or J8. The relay J7 or J8 is no longer energized and its control power input terminal and normally open contact terminal are open. Consequently, the positive and negative or negative and positive power input terminals of the second set of motor reducers A are de-energized, and the rotating shaft of the second set of motor reducers A no longer drives the water spray pipe and other horizontal movements. Subsequently, the water spray pipe is in the corresponding position to spray water onto the container.
[0021] Figure 1 、 2As shown, when an operator presses the ninth button D9 or the tenth button D10 of the wireless remote control device A3, the device emits a ninth or tenth wireless closed signal. The wireless receiving circuit module A2 receives this signal and outputs a high-level signal from pin 9 or 10, which enters the positive power input terminal of relay J9 or J10. Relay J9 or J10 is energized, closing its control power input terminal and normally open contact. This energizes the positive and negative or negative and positive power input terminals of the electric push rod M5. The movable column of the electric push rod M5 drives the nozzle to move vertically downwards or upwards, causing the distance between the lower end of the water spray pipe and the upper end and left and right sides of the container to decrease or increase. When the movable column of the electric push rod M5 drives the water spray pipe... After the lower end moves up or down along the top, left, right, front, and rear sides of the container, the operator presses the ninth button D9 or the tenth button D10 of the wireless remote control device A3 again. The wireless remote control device A3 transmits the ninth or tenth wireless open-circuit signal. After the wireless receiving circuit module A2 receives it, its 9th or 10th pin stops outputting a high level and enters the positive power input terminal of the relay J9 or J10. The relay J9 or J10 is no longer energized and its control power input terminal and normally open contact terminal are open. Consequently, the positive and negative or negative and positive power input terminals of the electric push rod M5 are de-energized, and the electric push rod M5 no longer drives the water spray pipe to move up or down. Subsequently, the water spray pipe is in the corresponding position to spray water on the container. When the worker presses the eleventh button D11 on the wireless remote control device A3, the device transmits an eleventh wireless closed signal. Upon receiving this signal, the wireless receiving circuit module A2 outputs a high-level signal at pin 13, which is then fed into the DC positive power input terminal. This energizes the solenoid valve DC, opening the valve core. Water from the tap pipe then flows through the spray pipe 2 and is sprayed from nozzle 7 onto the corresponding location on the container. When the worker presses the eleventh button D11 again, the device transmits an eleventh wireless open signal. Upon receiving this signal, the wireless receiving circuit module A2 stops outputting a high-level signal at pin 11, which is then fed into the DC power input terminal of the solenoid valve. The solenoid valve then closes, ceasing the water spraying operation on the container. Through all the above technical solutions, under the action of the relevant structure, the staff of this new invention can wirelessly control the angle of the nozzle to the left, right, front, rear and top ends without climbing, and can also adjust the height of the nozzle within a certain range. This allows water spraying operations to be performed on the left and right sides, front and rear sides and top of the container, which brings convenience to the staff and reduces the safety risk of staff falling from heights (when the nozzle is horizontal, water spraying operations can be performed on the top of the container; when the nozzle is aimed at the upper left side of the container, water spraying operations can be performed on the left side of the container from top to bottom (the water sprayed on the upper left side of the container falls down the container); when the nozzle is aimed at the upper right side of the container, water spraying operations can be performed on the right side of the container from top to bottom (the water sprayed on the upper right side of the container falls down the container).
[0022] 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.
[0023] 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 container waterproof testing mechanism, comprising wireless remote control equipment, an electric linear slide, support columns, a water spray pipe, wheel equipment, and rails, characterized in that: It also includes a wireless receiving circuit and adjustment equipment; there are at least two tracks, which are longitudinally distributed and fixedly installed on the ground of the detection area. There are at least two sets of wheel equipment and support columns. Each set of wheel equipment includes a motor reducer, a wheel, and a fixed seat. There are at least two wheels, one of which is rotatably installed on the lower rear end of the fixed seat, and the other wheel is fixedly installed on one side of the motor reducer's shaft. The housing of the motor reducer is fixedly installed on the lower front end of the fixed seat. The lower ends of the two sets of support columns are fixedly installed on the upper ends of the two sets of fixed seats. The lower ends of both sides of the electric linear slide are fixedly installed on the upper ends of the two sets of support columns. The wheels of the two sets of wheel equipment are respectively set on two rails; the adjustment equipment includes a motor reducer A, an electric push rod, and a solenoid valve. There are two sets of motor reducer A, one of which is a motor reducer A. The upper end of housing A is vertically and fixedly installed at the lower end of the sliding block of the electric linear slide table. The upper end of the electric push rod is vertically and fixedly installed at the lower end of the shaft of the first set of motor reducers A. A fixing plate is vertically and fixedly installed at the lower end of the electric push rod. The rear end of housing A of the second set of motor reducers A is horizontally and fixedly installed at the front end of the fixing plate. One side of the water spray pipe is a closed structure. The rear end of one side of the water spray pipe and the front end of the shaft of the second set of motor reducers A are fixedly installed together. The other side of the water spray pipe is fixedly connected to one end of the solenoid valve. The other end of the solenoid valve is fixedly connected to a nozzle. The wireless receiving circuit is installed in the component box. The multi-channel power output terminal of the wireless receiving circuit is electrically connected to the power input terminals of the motor reducers of the two sets of wheel equipment, the motor of the electric linear slide table, the electric push rod, the two sets of motor reducers A, and the solenoid valve.
2. The container waterproofing testing mechanism according to claim 1, characterized in that, The wheels of the two sets of wheel equipment are made of metal. Each wheel has a limit plate fixedly installed on both sides. The limit plates of the two wheels of each set of wheel equipment are located on both sides of the upper end of the track, and the distance between the inner sides of the two limit plates is greater than the width of the upper end of the track.
3. The container waterproofing testing mechanism according to claim 1, characterized in that, A connecting pipe is fixedly installed on one side of the upper end of the water spray pipe, and the side end of the connecting pipe is connected to the tap water pipe via a rubber hose with a length allowance.
4. The container waterproofing testing mechanism according to claim 1, characterized in that, The wheels of the two sets of wheel equipment can also be in direct contact with the ground without the installation of limit plates.
5. The container waterproofing testing mechanism according to claim 1, characterized in that, The distance between the inner sides of the two supports is greater than the width of the container. When the water spray pipe is in a vertical position, the distance between the lower end of the water spray pipe and the outer side of the upper end of the container is [missing information].
6. The container waterproofing testing mechanism according to claim 1, characterized in that, The wireless receiving circuit includes an electrically connected wireless receiving circuit module and ten relays. The multi-channel power output terminal of the wireless receiving circuit module is connected to the positive power input terminal of the ten relays and the positive power input terminal of the solenoid valve. The positive power input terminal of the wireless receiving circuit module is connected to the positive control power input terminal of the ten relays. The negative power input terminal and negative control power input terminal of the ten relays are connected to the negative power input terminal 2 of the wireless receiving circuit module and the negative power input terminal of the solenoid valve.