A chain-driven trailer assembly and a trailer system having the same

Abstract

This invention discloses a chain-driven trailer assembly and a trailer system incorporating the assembly. The invention relates to the technical field of chain-driven trailer assemblies, comprising: a motor and a sprocket idler assembly, with a transmission sprocket disposed between the motor and the sprocket idler assembly. A trailer assembly for towing vehicles is mounted on the transmission sprocket, and a rail is provided on the ground for the trailer assembly to move. The advantages of chain drive in this invention are that it only requires a single motor for driving, has relatively high transmission accuracy, and the design of the load-bearing wheel and rail is simple. In this invention, the setting of a moving stop ensures that the teeth of the driving gear can still mesh with the meshing groove even when there is a certain degree of misalignment. Furthermore, after the teeth of the driving gear mesh with the meshing groove, the gap between the teeth of the driving gear and the inner wall of the meshing groove can be automatically filled, ensuring a relatively compact meshing structure that is not easily disengaged.

Description

Technical Field

[0001] The invention relates to the technical field of chain drive trailer components, and in particular to a chain drive trailer component and a trailer system having the component. Background Art

[0002] When an emergency occurs to the vehicle in the environmental chamber, such as a short circuit, smoke, fire, etc., the laboratory operator starts the towing control system in the control room, and the emergency evacuation device can respond quickly and drag the test vehicle on the hub in the chamber to a designated location outside the environmental chamber.

[0003] In the prior art, the drag control system usually has a single-row sprocket, which is prone to the risk of falling off. To this end, we provide a chain-driven trailer assembly and a trailer system having the assembly to solve the above problem. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides a chain drive trailer assembly and a trailer system having the assembly to solve the problem that the sprocket of the towing control system is usually single-row and prone to the risk of falling off.

[0005] In order to achieve the above object, the present invention adopts a chain drive trailer assembly, comprising:

[0006] A motor and a sprocket idler assembly, wherein a transmission sprocket is arranged between the motor and the sprocket idler assembly, a trailer assembly for towing a vehicle is mounted on the transmission sprocket, and a steel rail for the trailer assembly to move is arranged on the ground;

[0007] A driving gear shaft is fixedly connected to the rotating shaft of the motor, and a driving gear is fixedly installed on the driving gear shaft. Two driving gears are provided. The width of the transmission sprocket is greater than the distance between the two driving gears. The transmission sprocket includes side hinged plates, which are arranged in pairs. A chain plate is fixedly connected between two corresponding side hinged plates. An engaging groove is arranged on the chain plate, and the engaging groove corresponds to the tooth portion of the driving gear. A moving block is slidably arranged at one end of the engaging groove, and a first magnetic block is fixedly arranged on the inner wall of the other end of the engaging groove. A second magnetic block is fixedly arranged on a side of the moving block close to the first magnetic block. A rectangular groove is provided on the tooth portion of the driving gear, and a third magnetic block is fixedly installed in the rectangular groove. The first magnetic block and the second magnetic block repel each other, and the first magnetic block and the second magnetic block are attracted to the third magnetic block.

[0008] As a further optimization of the above solution, a plurality of paired side hinged plates are provided, and adjacent side hinged plates are hingedly connected via hinge shafts.

[0009] As a further optimization of the above solution, a fixing groove is provided in the middle of the chain plate, an airbag is fixedly installed in the fixing groove, a magnetic layer is fixedly provided on the inner wall of the upper end of the airbag, a magnetic coating is fixedly provided on the outer ring of the driving gear shaft, and the magnetic coating and the magnetic layer attract each other.

[0010] As a further optimization of the above solution, an oil cavity is provided inside the airbag, a spring is fixedly provided on the bottom surface of the magnetic layer, a lower bonding plate is fixedly provided on the bottom of the spring, the lower bonding plate is fixedly installed on the bottom surface of the oil cavity, and an air hole is provided at the lower end of the airbag.

[0011] As a further optimization of the above solution, an oil groove is also provided in the middle of the chain plate, the bottom of the oil groove is connected to the air hole, the upper end of the oil groove passes through the surface of the chain plate, and a filter cotton pad is fixedly provided at the opening where the oil groove passes through the surface of the chain plate.

[0012] As a further optimization of the above solution, the sprocket idler assembly includes an idler, a rotating shaft is fixedly arranged in the middle of the idler, both ends of the rotating shaft are rotatably connected to a mounting seat respectively, and the mounting seat is fixed to the ground.

[0013] As a further optimization of the above solution, the idler wheel has a cylindrical structure, and both end surfaces of the idler wheel are movably fitted between two symmetrical movable blocks.

[0014] As a further optimization of the above solution, the side of the movable stopper that abuts against the idler wheel is a vertical plane.

[0015] As a further optimization of the above solution, the tooth portion of the driving gear is circular teeth.

[0016] The present invention also discloses a trailer system with a chain-driven trailer assembly, comprising any one of the chain-driven trailer assemblies described above.

[0017] A chain-driven trailer assembly and a trailer system having the assembly of the present invention have the following beneficial effects:

[0018] 1. A chain-driven trailer assembly and a trailer system having the same of the present invention. The advantages of the chain drive of the present invention are that only one motor is needed for driving, the transmission accuracy is relatively high, and the design of the load-bearing wheels and rails is simple;

[0019] 2. A chain drive trailer assembly and a trailer system having the same of the present invention, wherein the movable stopper is provided to ensure that the active gear teeth can still mesh with the meshing groove when the active gear teeth are offset to a certain extent; and after the active gear teeth mesh with the meshing groove, the gap between the active gear teeth and the inner wall of the meshing groove can be automatically filled, thereby ensuring that the meshing structure is relatively compact and not easy to disengage;

[0020] 3. A chain-driven trailer assembly and a trailer system having the assembly of the present invention, when the driving gear shaft moves to the top of the corresponding airbag, the magnetic layer fixedly arranged on the inner wall of the upper end of the airbag can be attracted upward, so that the airbag expands and fills the gap between the two driving gears, thereby filling the gap between the two driving gears, preventing debris from entering the gap to cause blockage, and preventing the driving gear from deflecting;

[0021] 4. A chain drive trailer assembly and a trailer system having the assembly of the present invention, when the air bag is inflated, it is reset by the tension of the spring, and the lubricating oil in the compressible oil chamber is discharged from the air hole after the air bag is reset, so as to achieve the purpose of automatically lubricating the transmission sprocket;

[0022] 5. The chain drive trailer assembly and trailer system with the assembly of the present invention can suck back the excess lubricating oil near the upper opening of the oil tank into the oil tank when the driving gear shaft expands again, thus avoiding the phenomenon of excessive lubricating oil dripping and wasting. The lubricating oil sucked back into the oil tank is filtered by the filter cotton pad, so it is relatively clean and can be reused;

[0023] 6. In a chain-driven trailer assembly and a trailer system having the assembly of the present invention, the airbag will reciprocately inhale and exhaust air during the process of expansion and resetting, thereby accelerating the airflow around the transmission sprocket, increasing the heat dissipation efficiency of the transmission sprocket, and improving the service life of the transmission sprocket.

[0024] With reference to the following description and drawings, a specific embodiment of the present invention is disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the scope of the embodiments of the present invention is not limited thereby, and within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of a chain drive trailer assembly of the present invention;

[0026] Figure 2 It is a schematic diagram of the transmission sprocket structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the airbag structure of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the driving gear shaft of the present invention;

[0029] Figure 5 For the present invention Figure 2 A schematic diagram of the enlarged structure in the middle.

[0030] In the figure: motor 1, drive sprocket 2, sprocket idler assembly 3, vehicle 4, trailer assembly 5, rail 6, driving gear 7, driving gear shaft 8, side hinge plate 9, hinge shaft 10, moving block 11, magnetic coating 12, first magnetic block 13, second magnetic block 14, meshing groove 15, chain plate 16, third magnetic block 17, air bag 18, magnetic layer 19, spring 20, lower bonding plate 21, oil groove 22, filter cotton pad 23, oil cavity 24, air hole 25, idler 26. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0032] It should be noted that when an element is referred to as being "disposed on, provided with" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected, connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. "Fixed connection" means a fixed connection. There are many ways of fixed connection, which are not within the scope of protection of this article. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only and do not represent the only implementation method.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs. The terms used in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] Please refer to the instruction manual Figure 1-5 The present invention provides a technical solution: a chain drive trailer assembly, comprising:

[0035] A motor 1 and a sprocket idler assembly 3, a transmission sprocket 2 is arranged between the motor 1 and the sprocket idler assembly 3, a trailer assembly 5 for towing a vehicle 4 is installed on the transmission sprocket 2, and a steel rail 6 for moving the trailer assembly 5 is arranged on the ground; when working, two trailer assemblies 5 are arranged, the trailer assembly 5 is lifted under the vehicle 4, the transmission sprocket 2 is connected to the front and rear ends of the trailer assembly 5, one end of the transmission sprocket 2 is connected to the sprocket idler assembly 3, and the other end of the transmission sprocket 2 is connected to the motor 1, when an emergency occurs to the vehicle 4 in the environmental chamber, such as a short circuit in the line, smoke, fire, etc., the motor 1 can be started, and when the motor 1 is started, the transmission sprocket 2 is transmitted, the transmission sprocket 2 drives the trailer assembly 5 to move, and the trailer assembly 5 lifts the vehicle 4 to move, thereby achieving the purpose of dragging the vehicle 4 to a designated location outside the environmental chamber.

[0036] It should be noted that the trailer assembly 5 usually uses a mobile trolley, which is a common device for lifting the vehicle 4 and will not be described in detail here.

[0037] The advantages of the chain transmission of the present invention are that only one motor is needed for driving, the transmission accuracy is relatively high, and the design of the load-bearing wheels and the rails is simple.

[0038] In actual use, the transmission sprocket 2 needs to be tensioned using a tensioning mechanism to avoid the transmission sprocket 2 from being detached when towing the vehicle 4, thereby ensuring that the transmission sprocket 2 can be used normally.

[0039] However, the transmission sprocket 2 in the prior art usually uses a single-row sprocket. In order to solve the problem that the drag control system usually has a single-row sprocket and the sprocket is prone to the risk of falling off, a driving gear shaft 8 is fixedly connected to the rotating shaft of the motor 1, and a driving gear 7 is fixedly installed on the driving gear shaft 8. There are two driving gears 7, and the width of the transmission sprocket 2 is greater than the distance between the two driving gears 7. The transmission sprocket 2 includes side hinged plates 9, and the side hinged plates 9 are arranged in pairs. A chain plate 16 is fixedly connected between two corresponding side hinged plates 9, and a meshing groove 15 is arranged on the chain plate 16. The meshing groove 15 corresponds to the tooth portion of the driving gear 7. When the motor 1 starts to drive the driving gear shaft 8 to rotate, the two driving gears 7 rotate at the same time, and the tooth portions of the two driving gears 7 mesh with the two corresponding meshing grooves 15, so that the chain transmission structure size is more compact and it is not easy for the transmission sprocket 2 to fall off.

[0040] In order to further prevent the transmission sprocket 2 from disengaging, a moving block 11 is slidably provided at one end of the meshing groove 15, a first magnetic block 13 is fixedly provided on the inner wall of the other end of the meshing groove 15, a second magnetic block 14 is fixedly provided on a side of the moving block 11 close to the first magnetic block 13, a rectangular groove is provided on the tooth portion of the driving gear 7, a third magnetic block 17 is fixedly installed in the rectangular groove, the first magnetic block 13 and the second magnetic block 14 repel each other, and the first magnetic block 13 and the second magnetic block 14 are attracted to the third magnetic block 17; when the tooth portion of the driving gear 7 is not meshed with the meshing groove 15, the moving block 11 will be relatively away from the first magnetic block 13 due to the repulsive effect of the first magnetic block 13 and the second magnetic block 14, so that the width of the meshing groove 15 is greater than that of the driving gear 7. The thickness of the tooth portion of the gear 7; therefore, when the driving gear 7 rotates, even if the position of the driving gear 7 is offset to a certain extent, since the width of the meshing groove 15 is greater than the thickness of the tooth portion of the driving gear 7, the tooth portion of the driving gear 7 can also mesh with the meshing groove 15. When the tooth portion of the driving gear 7 meshes with the meshing groove 15, since the first magnetic block 13 and the second magnetic block 14 are attracted to the third magnetic block 17, the movable block 11 will move in the meshing groove 15 toward the direction close to the first magnetic block 13, thereby clamping the tooth portion of the driving gear 7 in the meshing groove 15, filling the difference that the width of the meshing groove 15 is greater than the thickness of the tooth portion of the driving gear 7, so that the structure of the tooth portion of the driving gear 7 is more compact when meshing with the meshing groove 15, thereby increasing the transmission efficiency.

[0041] In the present invention, the provision of the movable stopper 11 ensures that the teeth of the driving gear 7 can still mesh with the meshing groove 15 when it is offset to a certain extent; and after the teeth of the driving gear 7 mesh with the meshing groove 15, the gap between the teeth of the driving gear 7 and the inner wall of the meshing groove 15 can be automatically filled, ensuring that the meshing structure is relatively compact and not easy to disengage.

[0042] In actual use, the width of the engagement groove 15 can be designed according to actual needs, which is a setting method that can be selected by those skilled in the art and will not be described in detail here.

[0043] There are multiple paired side hinge plates 9, and adjacent side hinge plates 9 are hinged by hinge shafts 10 to form a sprocket transmission structure. The sprocket idler assembly 3 includes an idler 26, and a rotating shaft is fixedly set in the middle of the idler 26. Both ends of the rotating shaft are rotatably connected to the mounting seat, and the mounting seat is fixed to the ground. One end of the transmission sprocket 2 is sleeved on the idler 26, and the other end is meshed with the driving gear 7; when the motor 1 is started, it drives the driving gear shaft 8 to rotate, and the driving gear shaft 8 drives the driving gear 7 to rotate, thereby driving the transmission sprocket 2 for transmission.

[0044] The idler wheel 26 has a cylindrical structure, and the two end surfaces of the idler wheel 26 are movably fitted between two symmetrical movable blocks 11. The two movable blocks 11 limit the idler wheel 26 so that the transmission sprocket 2 will not detach from the idler wheel 26; and the side of the movable block 11 that fits the idler wheel 26 is a vertical plane, which ensures that the idler wheel 26 can rotate smoothly.

[0045] In actual use, the teeth of the driving gear 7 are circular teeth, and the wear on the structure is small. Assuming that the weight of the vehicle 4 is 2 tons, the weight of the trailer assembly 5 is estimated to be about 100 kg, and the rolling friction coefficient between the vehicle 4 and the rail 6 is 0.2-0.4, the maximum value 0.4 is taken here, and the maximum rolling friction torque is: 0.4×(2000+100)×9.8=823.2N·m.

[0046] In order to enable the trailer assembly 5 to enter the bottom of the vehicle 4, the diameter of the load-bearing wheel at the bottom of the trailer assembly 5 should not be too large. The load-bearing wheel diameter is 80 mm, and the dragging force of the drive sprocket 2 on the trailer assembly 5 is 823.2 N·m / 40 mm=20580 N.

[0047] The type of transmission sprocket 2 needs to be greater than 08A, 12-14 teeth, and the required output torque of motor 1 is: 20580N×39.5mm=812.91N·m; the dragging speed is 1m / s, the angular velocity of transmission sprocket 2 is 1m / s / 39.5mm=25.32rad / s, the minimum speed of transmission sprocket 2 is 25.32rad / s / 2psi×60s=241.79rpm, and the power of motor 1 is 812.91×241.79 / 9550=20.58kW; the dragging speed needs to be ≥10m.

[0048] In the present invention, since the length of the chain plate 16 is set to be longer, the overall width of the transmission sprocket 2 is larger, the transmission structure is stable, and the connection strength is high. In order to further increase the compactness of the meshing between the driving gear 7 and the meshing groove 15, a fixed groove is also provided in the middle of the chain plate 16, and an airbag 18 is fixedly installed in the fixed groove. A magnetic layer 19 is fixedly provided on the inner wall of the upper end of the airbag 18, and a magnetic coating 12 is fixedly provided on the outer ring of the driving gear shaft 8. The magnetic coating 12 and the magnetic layer 19 attract each other. When the driving gear shaft 8 moves to the top of the corresponding airbag 18, the magnetic layer 19 fixedly provided on the inner wall of the upper end of the airbag 18 can be attracted upward, so that the airbag 18 expands and fills the gap between the two driving gears 7, making up for the gap between the two driving gears 7, avoiding debris from entering the gap to cause blockage, and avoiding the deviation of the driving gear 7.

[0049] Furthermore, an oil chamber 24 is provided inside the airbag 18, and lubricating oil is stored in the oil chamber 24. A spring 20 is fixedly provided on the bottom surface of the magnetic layer 19, and a lower bonding plate 21 is fixedly provided at the bottom of the spring 20. The lower bonding plate 21 is fixedly installed on the bottom surface of the oil chamber 24. An air hole 25 is provided at the lower end of the airbag 18. When the airbag 18 is expanded, it is reset by the pulling force of the spring 20. After the airbag 18 is reset, the lubricating oil in the oil chamber 24 can be compressed and discharged from the air hole 25, so as to achieve the purpose of automatically lubricating the transmission sprocket 2.

[0050] It should be noted that an oil groove 22 is also provided in the middle of the chain plate 16, the bottom of the oil groove 22 is connected to the air hole 25, the upper end of the oil groove 22 penetrates the surface of the chain plate 16, and a filter cotton pad 23 is fixedly provided at the opening of the oil groove 22 penetrating the surface of the chain plate 16; the lubricating oil discharged from the air hole 25 can enter the oil groove 22, and be discharged through the upper opening of the oil groove 22, so as to act on the surface of the transmission sprocket 2; when the driving gear shaft 8 expands again, the excess lubricating oil near the upper opening of the oil groove 22 can be sucked back into the oil groove 22, avoiding the phenomenon of excessive lubricating oil dripping and wasting. The lubricating oil sucked back into the oil groove 22 is filtered by the filter cotton pad 23, so it is relatively clean and can be reused.

[0051] The airbag 18 will inhale and exhaust air reciprocatingly during the process of expansion and resetting, thereby accelerating the airflow around the drive sprocket 2, increasing the heat dissipation efficiency of the drive sprocket 2, and improving the service life of the drive sprocket 2.

[0052] The present invention also discloses a trailer system with a chain-driven trailer assembly, comprising any one of the chain-driven trailer assemblies described above.

[0053] It is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A chain drive trailer assembly, characterized in that: include: A motor (1) and a sprocket idler assembly (3), a transmission sprocket (2) being arranged between the motor (1) and the sprocket idler assembly (3), a trailer assembly (5) for towing a vehicle (4) being mounted on the transmission sprocket (2), and a steel rail (6) for the trailer assembly (5) to move is arranged on the ground; A driving gear shaft (8) is fixedly connected to the rotating shaft of the motor (1), a driving gear (7) is fixedly mounted on the driving gear shaft (8), two driving gears (7) are provided, the width of the transmission sprocket (2) is greater than the distance between the two driving gears (7), the transmission sprocket (2) comprises a side hinge plate (9), the side hinge plates (9) are arranged in pairs, a chain plate (16) is fixedly connected between two corresponding side hinge plates (9), a meshing groove (15) is provided on the chain plate (16), the meshing groove (15) corresponds to the tooth portion of the driving gear (7), A movable stopper (11) is slidably arranged at one end of the meshing groove (15), a first magnetic block (13) is fixedly arranged on the inner wall of the other end of the meshing groove (15), a second magnetic block (14) is fixedly arranged on a side of the movable stopper (11) close to the first magnetic block (13), a rectangular groove is arranged on the tooth portion of the driving gear (7), a third magnetic block (17) is fixedly installed in the rectangular groove, the first magnetic block (13) and the second magnetic block (14) repel each other, and the first magnetic block (13) and the second magnetic block (14) are attracted to the third magnetic block (17).

2. A chain drive trailer assembly according to claim 1, characterized in that: A plurality of paired side hinged plates (9) are provided, and adjacent side hinged plates (9) are hingedly connected via hinge shafts (10).

3. A chain drive trailer assembly according to claim 1, characterized in that: A fixing groove is provided in the middle of the chain plate (16), an air bag (18) is fixedly installed in the fixing groove, a magnetic layer (19) is fixedly provided on the inner wall of the upper end of the air bag (18), a magnetic coating (12) is fixedly provided on the outer ring of the driving gear shaft (8), and the magnetic coating (12) and the magnetic layer (19) are attracted to each other.

4. A chain drive trailer assembly according to claim 3, characterized in that: An oil cavity (24) is arranged inside the airbag (18), a spring (20) is fixedly arranged on the bottom surface of the magnetic layer (19), a lower bonding plate (21) is fixedly arranged on the bottom of the spring (20), the lower bonding plate (21) is fixedly installed on the bottom surface of the oil cavity (24), and an air hole (25) is arranged at the lower end of the airbag (18).

5. A chain drive trailer assembly according to claim 4, characterized in that: An oil groove (22) is also provided in the middle of the chain plate (16), the bottom of the oil groove (22) is communicated with the air hole (25), the upper end of the oil groove (22) penetrates the surface of the chain plate (16), and a filter cotton pad (23) is fixedly provided at the opening where the oil groove (22) penetrates the surface of the chain plate (16).

6. A chain drive trailer assembly according to claim 1, characterized in that: The sprocket idler assembly (3) comprises an idler (26), a rotating shaft is fixedly arranged in the middle of the idler (26), and both ends of the rotating shaft are respectively rotatably connected to a mounting seat, and the mounting seat is fixed to the ground.

7. A chain drive trailer assembly according to claim 6, characterized in that: The idler wheel (26) is of cylindrical structure, and both end surfaces of the idler wheel (26) are movably fitted between two symmetrical movable stoppers (11).

8. A chain drive trailer assembly according to claim 7, characterized in that: The side of the movable stopper (11) that contacts the idler wheel (26) is a vertical plane.

9. A chain drive trailer assembly according to claim 1, characterized in that: The toothed portion of the driving gear (7) is circular toothed.

10. A trailer system having a chain drive trailer assembly, characterized in that: The invention comprises the chain drive trailer assembly as described in any one of claims 1 to 9.

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