Truck-mounted springboard
By installing a springboard device composed of steel pipes, patterned plates and magnets on the freight car, the problem of time-consuming and laborious loading and unloading of goods by freight cars and unsafe for soldiers to board the car is solved, and fast and safe loading and unloading and boarding operations are achieved, improving freight efficiency and security.
Patent Information
- Application Number
- CN202411579857.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-01-03
AI Technical Summary
In the absence of a loading and unloading truck platform or loader, it is time-consuming and laborious to load and unload cargo by manpower and poses safety risks. Especially when the People's Liberation Army soldiers get on the vehicle on the battlefield, they need to quickly and safely solve the frame problem.
A springboard device using the principle of mechanical inclined surface is designed, composed of steel pipes, patterned plates, grooved steel and magnets, and is installed on the large box bracket of a freight vehicle. The springboard can be retracted when pulled out and used, and is made of magnets and spring locators. To achieve fixing and restrict movement, the U-shaped bolts are modified into ┏ and ┓ types to fix the springboard.
It realizes the rapid and safe loading and unloading of goods without loading and unloading truck platforms, reduces manpower investment, improves loading and unloading efficiency and safety, and is suitable for the fast loading and unloading needs in the freight industry and on the battlefield.
Smart Images
Figure CN119239427A_ABST
Abstract
Description
Technical Field
[0001] The invention is an additional device installed on a large box bracket of a freight truck, which can be installed along with the truck, is simple, convenient and applicable, relates to the automobile freight industry, and belongs to the field of automobile freight transportation. Background Art
[0002] When there is no loading and unloading platform or loader for loading and unloading goods, freight trucks have to carry goods on their shoulders or in their arms, or two people have to carry them on the truck, which is time-consuming and labor-intensive, and poses a safety hazard. In addition, during training and disaster relief, PLA soldiers grab the large box railings of the car from the rear of the vehicle and step on the frame to get on the truck. If their legs or feet touch the frame, accidents will occur. Time is life on the battlefield, and being able to get on the truck quickly and safely can win a guarantee for victory on the battlefield. The present invention utilizes the mechanical inclined plane labor-saving principle to install the springboard on the vehicle, pull it out when in use, and retract it when not in use. The springboard is composed of steel pipes, patterned plates, grooved steel, magnets and other materials, and is characterized by a simple structure and convenient applicability. It can save time and effort when there is no loading and unloading platform or loader for loading, and can complete loading and unloading safely and quickly, as well as solve the problem that PLA soldiers can get on the truck quickly from the springboard. Summary of the invention
[0003] The invention content is divided into four parts, which are characterized by: A springboard manufacturing method is characterized by: 1. Milling grooves on steel pipes (to make springboard slideways) for manufacturing springboards; 2. Connecting and welding the milled steel pipes and patterned plates to form a complete springboard.
[0004] The second springboard positioner is manufactured, and its characteristics are: (springboard front positioner) 1. The slot steel installation magnet uses the magnetic characteristics to fix the springboard to limit the up and down movement, 2. The welded iron plate limits the forward and backward movement of the springboard.
[0005] The three-springboard slideway positioner is manufactured, and its characteristics are: (springboard rear positioner) 1. The groove steel installation spring uses elastic pressure to limit the upward and downward movement of the springboard, 2. φ8 mm bolts are installed as slideway positioners, 3. 3 mm thick iron plate limiters are installed to limit the forward and backward movement of the springboard.
[0006] Fourth, the structure and shape of the fixing bolts of the automobile box bracket are modified. The characteristics are as follows: 1. The original U-shaped bolts are changed into a ┏ type and a ┓ type. 2 Make a piece of iron plate, drill holes at both ends to let two modified ┏, ┓ locking bolts pass through the drilled holes, forming the upper and lower fixed large box brackets. The springboard passes through the space left after the modification, which does not affect the fixing effect between the large box bracket and the automobile beam.
[0007] A springboard manufacturing: 1 The experiment uses a Dongfeng freight truck with a load capacity of 4 tons, a length of 4 meters 2, and a width of 2 meters 3. Two steel pipes with a length of 3 meters, a diameter of φ63 mm, and a wall thickness of 4 mm are used. Take this type of steel pipe as an example (there are also semi-trailer vehicles with a load capacity of two tons, three tons, four tons, six tons, ten tons, and dozens of tons. These need to determine the specific dimensions of the steel pipe diameter, wall thickness, and length according to the large box bracket model of various vehicles). 2. Mill a groove on any side of the steel pipe, the width of the groove is 8 mm and the length is 2 meters 96 mm. (Leave a distance of 15 mm to 25 mm at the front and rear ends of the steel pipe). The diameter of the steel pipe varies according to the different car box brackets.
[0008] 3. At 180 degrees between the two steel pipe slotted surfaces, drill a φ14 mm hole at a 25 mm position on one end (for installing a φ8 mm bolt as the guide locator installation hole).
[0009] Attached Figure 1 2 meters of 96 mm milled groove steel pipe, drilling diagram.
[0010] 4 Make several 20X20 mm 3 mm thick connecting plates (determined according to the actual number needed) and drill a φ6 mm hole in the middle.
[0011] 5. Process a 3m x 600mm patterned iron plate, and open a 150x50mm rectangular hole on one side with a width of 600mm (the position for pushing and pulling the springboard when in use) 6. Lay the two milled and drilled steel pipes relatively flat, with the milled groove facing downward. At the 90-degree position of the steel pipe slot, place the connecting plate on one side of the steel pipe. Also place the patterned plate connecting plate on the patterned plate and use φ6 mm hole screws to fix and weld it to the two steel pipes. At the same time, weld it to the patterned plate (the function of the connecting plate is to connect the steel pipe and the patterned plate. It is installed on the steel pipe and the patterned plate). Weld the connecting plate to complete the ladder.
[0012] Attached Figure 2 Milling groove steel pipe, drilling processing, welding connecting plate to complete the ladder shape diagram. (Milling groove steel pipe, patterned plate connecting plate, welding structure springboard diagram as shown in Figure 2 shown)
[0013] Second springboard locator manufacturing 1 (springboard front locator): 1 Use 4 channel steels that are smaller than the height and width of the inner channel of the car box bracket (two front channel steels and two rear channel steels, so that the height and width of the outer side fit closely with the inner side of the car box bracket) 2. Weld a piece of iron plate with a thickness of 3 mm and the same length and width as the external shape and size of the side of the groove steel on one side of the front groove steel. (A magnet can be installed on this iron plate. The magnet can be round or square. The length, width or diameter can be greater than the diameter of the steel pipe φ65 mm) 3 Use 4 L-shaped irons as fixed irons and install them on the magnet. One end of the L is pressed on the magnet, and the other end is welded to the iron plate.
[0014] Attached Figure 3 (Locator at the front of the springboard) 3mm iron plate on the grooved steel and the magnet fixing iron, schematic diagram of magnet welding completion Three manufacturing springboard locator manufacturing 2 (springboard rear locator): 1. Drill a φ3 mm hole in the center of the groove steel, tap a φ3 mm thread, fix the pressure plate with a φ3 mm bolt, drill a hole on the groove steel, install the pressure spring pressure plate with a φ3 mm bolt, and fix the pressure spring on the groove steel.
[0015] 2 Drill a hole in the middle of the bottom of the channel steel, and install a φ8 mm metric through thread and a φ8 mm bolt in the hole. Figure 3 .
[0016] Make a cross countersunk metric threaded bolt with a diameter of φ8 mm and a length of 20 mm and a φ12 mm nut to match the thread under the channel steel. This bolt is installed in the through thread under the channel steel. (The outer diameter of this φ8 mm bolt should be ground to negative φ8 mm so that the 8 mm milling groove slideway of the 8 mm steel pipe can pass through the φ8 mm bolt smoothly. It is a slideway positioner that fixes the 8 mm milling groove of the steel pipe) Attached Figure 4 Manufacturing springboard locator Manufacturing 2 (springboard rear locator): diameter φ8 mm, length 20 mm nut slide locator schematic diagram.
[0017] 3. Weld a φ6mm nut on one side parallel to the middle position of the channel steel, and process a piece of iron plate with a thickness of 3mm and a width the same as the outer size of the channel steel. Drill a φ6mm hole at the upper end to make a piece of iron plate with a length and width greater than the outer size of the channel steel and a thickness of 3mm. Drill a φ6mm hole on the iron plate, and pass a φ6mmX8mm bolt through the φ6mm hole. (The outer diameter of the φ6mm bolt should be ground into a negative φ6mm so that the φ6mm hole of the 3mm iron plate can pass the φ6mmX8mm bolt smoothly. Lift the baffle during installation and it will fall naturally after installation. Its function is to block and limit the movement of the springboard forward and backward.) The iron plate is installed on the outside of the channel steel and is restricted by the φ6mmX8mm bolt. Attached Figure 5 Manufacturing of springboard positioner Manufacturing 2 (springboard rear positioner): The iron plate is installed on the outside of the channel steel and is restricted by φ6mmX8mm bolts. Schematic diagram of the iron plate.
[0018] Four processing, modification of automobile box bracket fixing bolts: 1. Cut above the inner side of the fixing screw of the large box bracket to change the "冂" shape into an "丨" shape. Place a steel bar with the same diameter as the fixing bolt on the large box bracket of the vehicle to form a "Г" shape and weld it. The "Г" shape on the fixing bolt of the large box bracket presses on the "匚" of the large box bracket. The upper and lower parts are opposite to the drilled iron plates of the girder. Fasten with nuts to complete the installation.
[0019] 2. Modify the other side of the fixing screw of the large box bracket in the same way. Place a steel bar with the same diameter as the fixing bolt on one side of the "丨" under the "匚" of the large box bracket of the vehicle to press on the lower part and form a "┐" shape. The lower part is opposite to the drilled iron plate of the girder. Fasten with nuts to complete the installation.
[0020] 3. Install an iron plate at the bottom. Drill holes at both ends to allow two fastening bolts to pass through the holes, forming the function of fixing the large box bracket above and below the fixing bolt. The gangplank passes through the remaining space after the modification without affecting the fixing between the large box bracket and the vehicle girder.
[0021] Appendix Figure 6 The left side is the unmodified bolt, and the right side is the schematic diagram after modification. Appendix Figure 7 Bottom iron plate with drilled holes Appendix Figure 8 Schematic diagram of the fixing of the fixing bolt of the large box bracket on the vehicle girder Appendix Fig. 9 The fixing bolt of the large box bracket after modification Appendix Fig.10 Installation combination diagram of the front and rear positioners of the gangplank Appendix Fig.11 After the gangplank is installed, push it in from the rear large box bracket. Appendix Fig.12 Schematic diagram of pulling out and lowering the gangplank from the large box bracket (front view of the large box railing lowered as shown) Fig.12 as shown Appendix Fig.13 Side view of pulling out and lowering the gangplank from the large box bracket (side view of the large box railing lowered as shown) Fig.13 as shown V. Specific implementation 1. Lay the ladder completed by welding and assembling the grooved steel pipe and the patterned plate connecting plate flat.
[0022] 2. Fix the front positioner magnet at the front end of the ladder, and fix the rear end of the gangplank with a spring and a baffle for the rear positioner. Combine them into one body and then place them in the inner groove of the large box bracket.
[0023] 3. Install the front positioner first. After determining the position of the front positioner, fix the front positioner on the outside of the large box bracket with two φ6X20 self-tapping screws from the outside of the large box bracket, one above and one below. After the fixation is completed, fix the other side.
[0024] 5 The installation method of the rear locator is the same as that of the front locator. After determining the position, fix the position with self-tapping screws.
[0025] 6 The springboard is pulled out and the large box is lowered. Front view.
[0026] 7 The springboard is pulled out from the large box bracket and placed on the ground (side view).
[0027] The patent of this invention solves the time-consuming and laborious problem of loading cargo onto a truck by carrying it on shoulders, arms, or two people together, and the problem of fast and safe loading of cargo during PLA training and disaster relief on the battlefield. The truck-mounted ramp can play an active role and influence in peacetime and wartime, changing the behavior and habits of loading and unloading cargo from the ground to the truck, and will have a positive impact on the freight industry both now and in the future.
Claims
1. A retractable loading and unloading device that is installed on a freight truck using the grooved steel groove position of a large box bracket and is based on the principle of physical inclined plane labor saving. The device belongs to the field of automobile freight and is used to solve the problem of freight trucks being able to save time and labor by using human wheelbarrows to quickly load and unload goods when there is no loader or loading platform, and the problem of PLA soldiers being able to safely and quickly get on board during peacetime training, disaster relief, and wartime. The device is characterized by: first, a springboard formed by welding a milled grooved steel pipe, a patterned plate, and a connecting plate; second, a grooved steel fixed springboard, a limiter, and a positioner that cooperate with the springboard; and third, changing the shape and fixing method of the bolt structure of the large box bracket clamp.
2. As claimed in claim 1: 1-springboard manufacturing technology solution: characterized in that The description includes:
1. steel pipe milling groove processing springboard slideway; 2. steel pipe and pattern plate are the springboard body; 3. the springboard is composed of connecting plate connecting steel pipe and pattern plate welding.
3. As described in claim 1: Technical solution of two fixed springboard grooved steel positioner devices: characterized in that: there are two grooved steel devices for fixing the springboard, which limit the left and right, front and back positions between the fixed springboard and the large box bracket, and: (1) the grooved steel positioner is installed with a magnet, which fixes the front position of the springboard, and uses the magnetic properties of the magnet to absorb and limit the fixed springboard position.