Modularized semitrailer frame convenient to assemble and disassemble

Abstract

A modular semitrailer frame convenient to assemble and disassemble comprises a tractor frame, a main frame and an auxiliary frame, the tractor frame is hinged to the rear end of a tractor, an adjusting mechanism is movably installed on the tractor frame, the main frame is fixedly installed at the rear end of the tractor frame, the auxiliary frame is assembled at the rear end of the main frame through a connecting mechanism, and the adjusting mechanism is movably installed on the auxiliary frame. The traction frame, the main frame and the auxiliary frame are connected through a plurality of connecting mechanisms, the auxiliary frame is composed of a plurality of groups of module frames, each group of module frames are connected through a plurality of connecting mechanisms, and each connecting mechanism comprises a connecting female head and a connecting male head. In this way, the module frame can be assembled or disassembled at any time according to requirements, the purpose of adjusting the overall length is achieved, different transportation requirements can be met, traditional bolt connection is replaced by the connecting mechanism, connection is more stable, the interior is not prone to being affected by the environment, and disassembly and assembly are more convenient.

Description

Technical Field

[0001] This utility model relates to the field of transportation equipment, and in particular to a modular semi-trailer frame that is easy to assemble and disassemble. Background Technology

[0002] The semi-trailer's frame is one of its core structures, primarily responsible for supporting the vehicle body, cargo, and connecting to the tractor unit. The frame design needs sufficient strength and rigidity to withstand various loads. Existing frames are generally manufactured to specified dimensions, meaning they cannot adapt to changes in cargo size. While additional frames can be added as needed, the connections between frames are typically secured with pins. Although this method is convenient, the pins wear down quickly over time and are usually exposed, exacerbating corrosion and wear, which is detrimental to safe transport. Utility Model Content

[0003] The purpose of this invention is to solve the problems of unstable connection, corrosion and accelerated wear caused by the use of pins to connect the frame in existing vehicles.

[0004] The present invention adopts the following technical solution:

[0005] A modular semi-trailer frame that is easy to assemble and disassemble includes a tractor frame, a main frame, and a sub-frame. The tractor frame is hinged to the rear end of the tractor vehicle, and an adjustment mechanism is movably mounted on the tractor frame. The main frame is fixedly mounted at the rear end of the tractor frame. The sub-frame is fitted to the rear end of the main frame through a connecting mechanism. The sub-frame is composed of multiple modular frames, and each modular frame is connected to the others through several connecting mechanisms. Each connecting mechanism includes a female connector and a female connector. The female connector and the female connector have identical structures and are on the same horizontal line.

[0006] Preferably, the tail ends of the female connector and the female connector are both fixedly installed on adjacent modular vehicle frames, and the two are installed as mirror images of each other.

[0007] Preferably, four sets of wheels are installed at the bottom of the main frame, one set of wheels is installed at the bottom of each module frame, and a brake is installed on each set of wheels, and all brakes are connected to a hydraulic braking system.

[0008] Preferably, the adjustment mechanism includes a movable plate, an adjusting rod, a connecting frame, a telescopic cylinder, a guide shaft, and a clamping plate. The movable plate is movably mounted in the middle of the tractor frame, and the adjusting rod is also mounted on the movable plate. The connecting frame is fixedly mounted on the upper part of the movable plate. Several telescopic cylinders are fixedly mounted on both sides of the connecting frame. Guide shafts are also movably mounted on both sides of the connecting frame. The other ends of the telescopic cylinders and guide shafts are fixedly connected to the clamping plate.

[0009] Preferably, the number of telescopic cylinders and guide shafts is not less than four, and the guide shaft is located in the middle of the telescopic cylinders.

[0010] Preferably, a platform is also installed on the upper part of the main frame, and a rotating shaft is movably installed on the upper part of the main frame. The upper part of the rotating shaft is fixedly connected to the bottom of the platform. A first hydraulic cylinder and a second hydraulic cylinder are also fixedly mounted on the main frame, and the telescopic ends of the first hydraulic cylinder and the second hydraulic cylinder are both movably connected to the rotating shaft.

[0011] Preferably, the female connector and the female connector include a connector base, a pin, a limiting groove, a movable block, a connecting arm, and an electric cylinder. The connector base has a hollow internal structure, and a pin is fixedly installed inside the connector base, with the pin extending outward. A limiting groove is provided on the pin, and a movable block is fitted inside the limiting groove. The movable block is also fixedly connected to one end of the connecting arm. An electric cylinder is movably installed inside the connector base, and the telescopic end of the electric cylinder is movably connected to the connecting arm. Channels are provided on both the connector base and the limiting groove, and the connecting arm passes through the channels on the limiting groove and the connector base respectively, extending outward.

[0012] Preferably, both the limiting groove and the movable block are semi-circular structures.

[0013] The beneficial effects of this utility model are as follows:

[0014] The tractor frame, main frame, and subframe are connected sequentially. The subframe is composed of multiple modular frames, and each modular frame can be quickly connected together through a connecting mechanism. This allows the modular frames to be assembled or disassembled as needed, thereby adjusting the overall length to adapt to different transportation requirements. Furthermore, the connecting mechanism replaces the traditional pin connection, which not only makes the connection more stable but also makes the internal components less susceptible to environmental influences, corrosion, and rust. It also makes disassembly and assembly more convenient. Attached Figure Description

[0015] Figure 1 A side view of a modular semi-trailer frame that is easy to assemble and disassemble;

[0016] Figure 2 A top view of a modular semi-trailer frame that is easy to assemble and disassemble;

[0017] Figure 3 A front view of a modular semi-trailer frame that is easy to assemble and disassemble;

[0018] Figure 4 for Figure 3 Enlarged structural diagram of the connecting mechanism;

[0019] Figure 5 This is a schematic diagram of the installation of the connecting mechanism;

[0020] Figure 6 This is a schematic diagram of the working mechanism;

[0021] In the diagram: 1. Tractor frame; 2. Main frame; 3. Sub-frame; 4. Adjustment mechanism; 5. Connecting mechanism; 6. Modular frame; 50. Connecting female head; 51. Connecting female head; 7. Wheel; 8. Brake; 40. Moving plate; 41. Adjustment fixing rod; 42. Connecting frame; 43. Telescopic cylinder; 44. Guide shaft; 45. Clamping plate; 9. Platform; 10. Rotating shaft; 11. First hydraulic cylinder; 12. Second hydraulic cylinder; 500. Connecting seat; 501. Ejector pin; 502. Limiting groove; 503. Movable block; 504. Connecting arm; 505. Electric cylinder; and 13. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1:

[0024] See Figure 1-4 A modular semi-trailer frame that is easy to assemble and disassemble includes a tractor frame 1, a main frame 2, and a sub-frame 3. The tractor frame 1 is hinged to the rear end of the tractor, and an adjustment mechanism 4 is movably installed on the tractor frame 1. The adjustment mechanism 4 mainly adjusts the width to accommodate goods or carriages of different widths. The main frame 2 is fixedly installed at the rear end of the tractor frame 1. The sub-frame 3 is fitted to the rear end of the main frame 2 through a connecting mechanism 5. The sub-frame 3 is composed of multiple sets of modular frames 6. Each set of modular frames 6 is connected by several connecting mechanisms 5. By increasing or decreasing the number of sets of modular frames 6, the length can be adjusted to accommodate goods of different lengths. The use of connecting mechanisms 5 replaces the traditional pin connection method, which not only makes the connection more stable but also prevents corrosion and wear. The connecting mechanism 5 includes a connecting female head 50 and a connecting female head 51. The connecting female head 50 and the connecting female head 51 have identical structures and are on the same horizontal line.

[0025] The tail ends of the female connector 50 and the female connector 51 are both fixedly installed on the adjacent module frame 6, and the two are installed in mirror image of each other. When connecting, it is only necessary to push the adjacent module frame 6 closer to each other, so that the female connector 50 and the female connector 51 can be engaged and can be automatically controlled by the electric cylinder 505.

[0026] Four sets of wheels 7 are installed at the bottom of the main frame 2. Each module frame 6 has one set of wheels 7 installed at the bottom, and each set of wheels 7 is also equipped with a brake 8. All brakes 8 are connected to a hydraulic braking system. The hydraulic braking system mainly controls each brake 8 to brake, which can make the braking distribution more balanced.

[0027] The adjustment mechanism 4 includes a movable plate 40, an adjusting rod 41, a connecting frame 42, a telescopic cylinder 43, a guide shaft 44, and a clamping plate 45. The movable plate 40 is movably mounted in the middle of the tractor frame 1, and the adjusting rod 41 is also mounted on the movable plate 40. The connecting frame 42 is fixedly installed on the upper part of the movable plate 40, and several telescopic cylinders 43 are fixedly installed on both sides of the connecting frame 42. The guide shaft 44 is also movably installed on both sides of the connecting frame 42. The other ends of the telescopic cylinders 43 and the guide shafts 44 are fixedly connected to the clamping plate 45. The adjustment mechanism 4 can also make fine adjustments to the length. That is, when making fine adjustments, simply turn the adjusting rod 41 so that the movable plate 40 can slide back and forth along the middle of the tractor frame 1. Secondly, when the width needs to be adjusted, simply control the telescopic cylinders 43 to extend and retract to both sides. This will cause the two clamping plates 45 to move away from or closer to each other. In this way, the width is adjusted by controlling the distance between the clamping plates 45.

[0028] The number of telescopic cylinders 43 and guide shafts 44 is not less than four, and the guide shafts 44 are located in the middle of the telescopic cylinders 43.

[0029] The main frame 2 is also equipped with a platform 9. A rotating shaft 10 is movably mounted on the upper part of the main frame 2. The upper part of the rotating shaft 10 is fixedly connected to the bottom of the platform 9. A first hydraulic cylinder 11 and a second hydraulic cylinder 12 are also fixedly mounted on the main frame 2. The telescopic ends of the first hydraulic cylinder 11 and the second hydraulic cylinder 12 are both movably connected to the rotating shaft 10. When rotating, it is only necessary to control the first hydraulic cylinder 11 and the second hydraulic cylinder 12 to be in different working states. For example, when the telescopic end of the first hydraulic cylinder 11 is extended, the telescopic end of the second hydraulic cylinder 12 is in the retracted state. At this time, the rotation of the rotating shaft 10 is realized, which can drive the platform 9 to rotate.

[0030] See Figure 5The connecting female head 50 and connecting female head 51 include a connecting seat 500, a ejector pin 501, a limiting groove 502, a movable block 503, a connecting arm 504, and an electric cylinder 505. The connecting seat 500 has a hollow structure, and the ejector pin 501 is fixedly installed inside the connecting seat 500, with part of the ejector pin 501 extending outward. The limiting groove 502 is provided on the ejector pin 501, and the movable block 503 is fitted inside the limiting groove 502. The movable block 503 can move within the limiting groove 505. The movable block 503 is fixedly connected to one end of the connecting arm 504. An electric cylinder 505 is also movably installed in the connecting seat 500. The telescopic end of the electric cylinder 505 is movably connected to the connecting arm 504. The electric cylinder 505 mainly controls the timing of the rotation of the connecting arm 504. Channels 13 are opened on both the connecting seat 500 and the limiting groove 502. The connecting arm 504 passes through the limiting groove 502 and the channel 13 on the connecting seat 500 respectively and extends outward.

[0031] Both the limiting groove 502 and the movable block 503 are semi-circular structures, and the friction is smaller when the semi-circular structure rotates between each other.

[0032] The principle of this utility model:

[0033] See Figure 5 and Figure 6When the cargo is too long, simply increase the number of modular frames 6 according to the actual situation. Once the number of modular frames 6 is determined, perform modular assembly. First, align the male connector 51 with the female connector 50, then bring the male connector 51 and female connector 50 closer together. During this process, the pin 501 on the male connector 51 inserts to the left into the female connector 50, while the pin 501 on the female connector 50 also inserts in the opposite direction into the male connector 51. During this process, the end of the pin 501 will first contact the movable block 503. As the movement continues, the semi-circular movable block 503 will be completely within the limiting groove 502 until the flat end of the movable block 503 is within the limiting groove 502. When the horizontal end faces of 02 are collinear, the connecting arm 504 will rotate counterclockwise along the axis of the movable block 503. During this process, the connecting arm 504 will pull the electric cylinder 505 to extend until the movable block 503 in the connecting female head 50 and the movable block 503 in the connecting female head 51 are aligned with each other. At this time, the connecting arm 504 is perpendicular to the horizontal line, that is, the two semi-circular movable blocks 503 form a circle. At this time, the connecting arm 504 will rotate clockwise under the action of the electric cylinder 505 until it returns to the initial position. At this time, the connecting female head 51 and the connecting male head 50 are locked. Compared with the traditional pin connection, this connection method is more stable, and the moving parts are inside, so they will not rust or corrode, and the service life is longer. When it is necessary to disconnect, simply control the electric cylinder 505 to work. The telescopic end of the electric cylinder 505 will push the connecting arm 504 to drive the movable block 503 to rotate counterclockwise in the limiting groove 502. When the connecting arm 504 is perpendicular to the horizontal line, that is, the two movable blocks 503 are located directly above and directly below respectively, then under the action of external force, the connecting male head 51 and the connecting female head 50 can be separated.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A modular semi-trailer frame that is easy to assemble and disassemble, characterized in that: The vehicle includes a tractor frame (1), a main frame (2), and a sub-frame (3). The tractor frame (1) is hinged to the rear end of the tractor vehicle, and an adjustment mechanism (4) is movably installed on the tractor frame (1). The main frame (2) is fixedly installed at the rear end of the tractor frame (1). The sub-frame (3) is fitted to the rear end of the main frame (2) through a connecting mechanism (5). The sub-frame (3) is composed of multiple modular frames (6). Each modular frame (6) is connected to each other through several connecting mechanisms (5). The connecting mechanism (5) includes a female connector (50) and a female connector (51). The female connector (50) and the female connector (51) have the same structure and are on the same horizontal line.

2. The modular semi-trailer frame for easy assembly and disassembly according to claim 1, characterized in that: The tail ends of the female connector (50) and the female connector (51) are both fixedly installed on the adjacent module frame (6), and the two are installed in mirror image of each other.

3. The modular semi-trailer frame for easy assembly and disassembly according to claim 1, characterized in that: The main frame (2) has four sets of wheels (7) installed at the bottom. Each module frame (6) has one set of wheels (7) installed at the bottom, and each set of wheels (7) is also equipped with a brake (8). All brakes (8) are connected to the hydraulic braking system.

4. The modular semi-trailer frame for easy assembly and disassembly according to claim 1, characterized in that: The adjustment mechanism (4) includes a movable plate (40), an adjusting fixing rod (41), a connecting frame (42), a telescopic cylinder (43), a guide shaft (44), and a clamping plate (45). The movable plate (40) is movably mounted in the middle of the tractor frame (1), and the movable plate (40) is also equipped with an adjusting fixing rod (41). The connecting frame (42) is fixedly mounted on the upper part of the movable plate (40). Several telescopic cylinders (43) are fixedly mounted on both sides of the connecting frame (42). The guide shaft (44) is also movably mounted on both sides of the connecting frame (42). The other end of the telescopic cylinder (43) and the guide shaft (44) are fixedly connected to the clamping plate (45).

5. The modular semi-trailer frame for easy assembly and disassembly according to claim 4, characterized in that: The number of telescopic cylinders (43) and guide shafts (44) is not less than four, and the guide shafts (44) are located in the middle of the telescopic cylinders (43).

6. The modular semi-trailer frame for easy assembly and disassembly according to claim 1, characterized in that: The main frame (2) is also equipped with a platform (9) on its upper part. A rotating shaft (10) is movably installed on the upper part of the main frame (2). The upper part of the rotating shaft (10) is fixedly connected to the bottom of the platform (9). A first hydraulic cylinder (11) and a second hydraulic cylinder (12) are also fixedly mounted on the main frame (2). The telescopic ends of the first hydraulic cylinder (11) and the second hydraulic cylinder (12) are both movably connected to the rotating shaft (10).

7. The modular semi-trailer frame for easy assembly and disassembly according to claim 1, characterized in that: The female connector (50) and female connector (51) include a connector base (500), a pin (501), a limiting groove (502), a movable block (503), a connecting arm (504), and an electric cylinder (505). The connector base (500) has a hollow structure inside, and the pin (501) is fixedly installed inside the connector base (500). The pin (501) extends outward, and the limiting groove (502) is provided on the pin (501). The limiting groove (502) is equipped with a... A movable block (503) is installed, which is also fixedly connected to one end of a connecting arm (504). An electric cylinder (505) is also movably installed in the connecting seat (500). The telescopic end of the electric cylinder (505) is movably connected to the connecting arm (504). Channels (13) are opened on both the connecting seat (500) and the limiting groove (502). The connecting arm (504) passes through the limiting groove (502) and the channel (13) on the connecting seat (500) respectively and extends outward.

8. The modular semi-trailer frame for easy assembly and disassembly according to claim 7, characterized in that: Both the limiting groove (502) and the movable block (503) are semi-circular structures.

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