Protective frame of trailer traction mechanism

Abstract

The invention discloses a trailer traction mechanism protection frame, and belongs to the technical field of semitrailers. The trailer traction mechanism protection frame comprises a front protection frame body and a rear protection frame body which are connected to the bottom of a trailer carriage and arranged on the front side and the rear side of a saddle respectively so as to avoid unhooking of a trailer, an interlayer is arranged on the front portion of the trailer carriage, and a turnover mechanism is arranged in the interlayer; and the front protective frame is connected with the turnover mechanism. When the main frame and the trailer compartment are picked and hung, the turnover mechanism turns over the front protection frame into the interlayer, and the main frame is separated from the front end of the trailer compartment to be picked and hung. When the main frame is hung on the trailer carriage, the front protection frame is arranged in the interlayer, after hanging is completed, the turnover mechanism turns over the front protection frame out of the interlayer, and the front protection frame and the rear protection frame are arranged on the front side and the rear side of the saddle respectively. The safety risk caused by the fact that a main vehicle saddle locking mechanism or a trailer traction pin is accidentally damaged, slides forwards out of control to impact a cab or is abnormally separated in the running process can be effectively prevented.

Description

Technical Field

[0001] The invention relates to the technical field of semitrailer vehicles, in particular to a protective frame for a trailer traction mechanism. Background Art

[0002] When the semi-trailer is driving, the main vehicle of the vehicle drives the trailer compartment to drive, and the trailer towing pin is connected to the main vehicle saddle in the middle. The force of the vehicle driving and moving back and forth mainly depends on the towing pin, which is installed on the trailer movable plate and fixed with screws. When the main vehicle and trailer are connected, the main vehicle saddle locks the towing pin to complete the hanging action. During the use of the vehicle, the main vehicle saddle and the trailer towing pin must be checked. Excessive wear of the saddle locking mechanism and sudden breakage of the towing pin will cause the trailer to unhook accident.

[0003] There are problems with the semi-trailer vehicles in the prior art:

[0004] 1. When the trailer towing pin or the towing pin fixing screw is broken, the vehicle performs emergency braking. The main vehicle has good braking effect, but the trailer has slow braking reaction or poor braking effect. Or when the vehicle is driving at high speed and suddenly decelerates, the trailer will slide forward and impact the main vehicle's cab, or rush in other directions, which poses a serious safety hazard and may cause harm to the driver and passers-by.

[0005] 2. The locking mechanism of the main vehicle saddle to the towing pin is excessively worn, which is not easy to find during routine inspections and poses a serious safety hazard. During the vehicle starting process or the main vehicle accelerating process, the main vehicle drives the trailer. Once the saddle locking mechanism is damaged, it is easy for the main vehicle and trailer to separate abnormally, causing property losses such as trailer rollover.

[0006] 3. During normal transportation, the main vehicle drives the trailer. Once the saddle locking mechanism is damaged, the main vehicle and the trailer will be abnormally separated, and the trailer will rush to any place uncontrollably, posing a serious safety threat to surrounding vehicles and pedestrians, especially when driving at high speeds, the safety risk is even greater. Summary of the invention

[0007] 1. Technical problems to be solved by the invention:

[0008] In view of the above problems of existing semi-trailer vehicles, the present invention provides a trailer towing mechanism protection frame, which avoids the trailer uncoupling accident caused by damage to the vehicle saddle locking mechanism or towing pin by arranging a front protection frame and a rear protection frame on the front and rear sides of the saddle, thereby achieving the effect of reducing safety risks.

[0009] 2. Technical solution:

[0010] In order to achieve the above object, the technical solution provided by the present invention is:

[0011] A trailer traction mechanism protection frame, a main frame surface is connected with a saddle, the saddle is used for the main frame and the trailer body to be unhooked and hung, the protection frame includes a front protection frame and a rear protection frame connected to the bottom of the trailer body and arranged in front of and behind the saddle to prevent the trailer from being unhooked, a partition is arranged at the front of the trailer body, and a flip mechanism is built in the partition; the front protection frame is connected to the flip mechanism to prevent the front protection frame from interfering when unhooking and hanging.

[0012] A further technical solution is that the flipping mechanism is a triangular flipping mechanism, which includes a return spring, a movable plate, a movable shaft, a triangular pressure block and a flipping shaft; the front end of the movable plate is connected to the return spring and is continuously tightened by the return spring, and the rear end of the movable plate is rotatably connected to the partition through the movable shaft; the bottom edge of the triangular pressure block is pressed against the surface of the movable plate, and the top angle is rotatably connected to the partition through the flipping shaft; the bottom of the movable plate is connected to the front protective frame, and the triangular flipping mechanism has a simple flipping action and a small flipping stroke, and is suitable for the limited and narrow space of the partition.

[0013] According to a further technical solution, a flip handle is connected to the side of the triangular pressure block, and a rod at the bottom of the flip handle is connected to the top corner and the side of the triangular pressure block, which saves effort in operation.

[0014] A further technical solution is that the shape of the triangular pressure block is an isosceles triangle, with the waist side being larger than the base side, which increases the flipping stroke while also increasing the flipping handle lever ratio, making flipping more labor-saving.

[0015] A further technical solution is that the inner sides of the front and rear protective frames are arc-shaped structures that match the two sides of the saddle, which not only buffer the impact force but also have a clamping effect on the saddle. The outer sides are connected with supporting ribs to improve the protective strength of the front and rear protective frames.

[0016] A further technical solution is that when the main frame is unhooked from the trailer compartment, the flipping mechanism flips the front protection frame into the compartment, and the main frame is separated and unhooked from the front end of the trailer compartment;

[0017] When the main frame is hooked to the trailer compartment, the front protective frame is in the compartment. After the hooking is completed, the flipping mechanism flips the front protective frame out of the compartment, and the front protective frame and the rear protective frame are arranged in front and rear of the saddle.

[0018] 3. Beneficial effects:

[0019] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0020] The trailer towing mechanism protection frame of the present invention can control the trailer to slide in a small range on the main vehicle saddle when the main vehicle saddle locking mechanism or the trailer towing pin is damaged, so as to effectively prevent the trailer from losing control and sliding forward to impact the cab, or abnormally separating and rushing to other places during driving, thereby eliminating the safety threat to surrounding vehicles and pedestrians; at this time, the connection between the main vehicle and the trailer produces a shaking gap and sound, and the driver can hear or discover the abnormal situation of the main vehicle and the trailer in time and stop the vehicle for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the trailer traction mechanism protection frame of a specific embodiment;

[0022] Figure 2 It is a bottom view structural diagram of a trailer compartment of a specific embodiment;

[0023] Figure 3 It is a schematic diagram of the side structure of the trailer compartment of a specific embodiment;

[0024] Figure 4 It is a schematic diagram of the flipping state of the triangular flipping mechanism of a specific embodiment;

[0025] Figure 5 It is a schematic diagram of the upright state of the triangular flip mechanism of a specific embodiment.

[0026] In the figure: 1. cab; 2. saddle; 3. front protective frame; 4. front supporting rib plate; 5. return spring; 6. flip handle; 7. triangular flip mechanism; 8. movable plate; 9. movable shaft; 10. traction pin; 11. rear protective frame; 12. rear supporting rib plate; 13. trailer compartment; 14. main frame; 15. traction pin fixing screw; 71. triangular pressure block; 72. flip shaft; 131. partition. DETAILED DESCRIPTION

[0027] In order to further understand the content of the present invention, the invention is described in detail with reference to the accompanying drawings.

[0028] Example

[0029] The trailer traction mechanism protection frame of this embodiment is as follows Figure 1 , 2 As shown in Figure 3, the main frame 14 is connected to a saddle 2, which is used for the main frame 14 and the trailer compartment 13 to be unhooked and hung. The protective frame includes a front protective frame 3 and a rear protective frame 11 connected to the bottom of the trailer compartment 13 and arranged in front and rear of the saddle 2 to prevent the trailer from being unhooked. During installation, the maximum diagonal distance of the saddle 2 is measured, and the middle distance between the front and rear protective frames is greater than the maximum diagonal distance of the saddle 2, which cannot affect the steering operation of the trailer. The height setting of the two protective frames: after the main frame 14 and the trailer compartment 13 are hung, the lower edge of the protective frame is lower than the lower edge of the upper plane of the main vehicle saddle 2.

[0030] A partition 131 is provided at the front of the trailer compartment 13, and a turnover mechanism is built in the partition 131; the front protection frame 3 is connected to the turnover mechanism to avoid interference with the front protection frame 3 during unhooking and hooking.

[0031] like Figure 1 , 3 As shown in Figures 4 and 5, the flipping mechanism is a triangular flipping mechanism 7, which includes a return spring 5, a movable plate 8, a movable shaft 9, a triangular pressure block 71 and a flipping shaft 72; the front end of the movable plate 8 is connected to the return spring 5, and is continuously tightened by the return spring 5 to pull the movable plate 8 upward, and the rear end of the movable plate 8 is rotatably connected to the partition 131 through the movable shaft 9; the bottom edge of the triangular pressure block 71 is pressed against the surface of the movable plate 8, and the top angle is rotatably connected to the partition 131 through the flipping shaft 72; the bottom of the movable plate 8 is connected to the front protective frame 3, and the triangular flipping mechanism 7 has a simple flipping action and a small flipping stroke, and is suitable for the limited and narrow space of the partition 131.

[0032] The side of the triangular pressing block 71 is connected with a flip handle 6, and the bottom rod of the flip handle 6 is connected to the top corner and the side of the triangular pressing block 71, which saves effort in operation. The flip handle 6 is flipped to control the front protection frame 3 and the movable plate 8 to move up and down.

[0033] The shape of the triangular pressing block 71 is an isosceles triangle, with the waist side being larger than the base side, which increases the turning stroke and the lever ratio of the turning handle 6, making the turning more labor-saving.

[0034] The inner side of the front protection frame 3 and the rear protection frame 11 is an arc-shaped structure matching the two sides of the saddle 2, which can buffer the impact force and have a clamping effect on the saddle 2; the outer sides of the two protection frames are connected with support ribs, namely the front support rib 4 and the rear support rib 12, to improve the protection strength of the front protection frame 3 and the rear protection frame 11. During assembly, the bracket of the rear protection frame 11 is welded to the movable plate on the contact surface between the bottom surface of the trailer compartment 13 and the saddle 2, and 4 support ribs are welded on the outer side of the protection frame; the front protection frame 3 and the movable plate 8 are connected as a whole, and 4 support ribs are welded on the outer side to increase the strength. The movable plate 8 has movable shafts 9 on both sides and is installed in the middle partition 131 of the trailer compartment 13 to facilitate up and down movement.

[0035] The trailer traction mechanism protection frame of this embodiment is specifically used. When the main frame 14 is unhooked from the trailer compartment 13, the flip mechanism flips the front protection frame 3 into the compartment 131, and the main frame 14 is separated and unhooked from the front end of the trailer compartment 13;

[0036] When the main frame 14 is hooked to the trailer carriage 13, the front protective frame 3 is in the compartment 131. After the hooking is completed, the flipping mechanism flips the front protective frame 3 out of the compartment 131, and the front protective frame 3 and the rear protective frame 11 are arranged in front and rear of the saddle 2 respectively.

[0037] The specific working principle is as follows:

[0038] 1. When the main frame 14 is unhooked from the trailer compartment 13, first flip the triangular flip mechanism 7 so that there is a large gap between the front protection frame 3 and the movable plate 8 and the triangular flip mechanism 7; hold the flip handle 6 of the triangular flip mechanism 7 and use the lever principle, such as Figure 4 As shown, the triangular pressure block is flipped forward with the flip center axis 72 as the fulcrum. Under the action of the return spring 5, the front protection frame 3 and the movable plate 8 are retracted into the compartment compartment 131, making it easier for the main vehicle to be separated from the front end of the trailer.

[0039] 2. The main frame 14 and the trailer compartment 13 can be directly hung up because the front protection frame 3 is retracted in the compartment compartment 131. After the hanging is completed, the triangular flip mechanism 7 is flipped over, and the flip handle 6 of the triangular flip mechanism 7 is held, and the lever principle is used, such as Figure 5 As shown, with the turning center axis 72 of the triangular pressing block as the fulcrum, it turns backward, and the triangular pressing block 71 presses the front protection frame 3 and the movable plate 8 to make them extend out of the compartment interlayer 131 and cannot be retracted into the interlayer 131. When the trailer is accidentally unhooked, the saddle 2 will impact the front protection frame 3, and the triangular pressing block 71 can effectively control the front protection frame 3 to prevent the front protection frame 3 from accidentally being retracted into the compartment interlayer 131 when subjected to force, thereby effectively playing a protective role.

[0040] In summary, the trailer towing mechanism protection frame of the present embodiment can control the trailer to slide in a small range on the main vehicle saddle 2 when the trailer towing pin 10 or the towing pin fixing screw 15 of the main vehicle saddle 2 is broken or damaged, thereby effectively preventing the trailer from losing control and abnormal separation and uncoupling, and preventing the trailer from losing control and sliding forward to impact the cab 1, eliminating the safety threat to surrounding vehicles and pedestrians, and avoiding serious safety accidents.

[0041] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure and manufacturing steps are not limited thereto. Therefore, if a person skilled in the art is inspired by it and, without departing from the purpose of the invention, designs a structure and an implementation method similar to the technical solution without creativity, they shall all fall within the protection scope of the present invention.

Claims

1. A trailer traction mechanism protection frame, wherein a saddle (2) is connected to the surface of a main frame (14), characterized in that: The invention comprises a front protective frame (3) and a rear protective frame (11) which are connected to the bottom of a trailer compartment (13) and are arranged at the front and rear sides of a saddle (2), respectively; a partition (131) is arranged at the front of the trailer compartment (13), and a turnover mechanism is built in the partition (131); and the front protective frame (3) is connected to the turnover mechanism.

2. The trailer traction mechanism protection frame according to claim 1, characterized in that: The flipping mechanism is a triangular flipping mechanism (7), which comprises a return spring (5), a movable plate (8), a movable shaft (9), a triangular pressure block (71) and a flip shaft (72); the front end of the movable plate (8) is connected to the return spring (5) and is continuously tightened by the return spring (5); the rear end of the movable plate (8) is rotatably connected to the partition (131) through the movable shaft (9); the bottom edge of the triangular pressure block (71) is pressed against the surface of the movable plate (8), and the top angle is rotatably connected to the partition (131) through the flip shaft (72); the bottom of the movable plate (8) is connected to the front protective frame (3).

3. The trailer traction mechanism protection frame according to claim 1, characterized in that: The side surface of the triangular pressing block (71) is connected to a flip handle (6), and the bottom rod of the flip handle (6) is connected to the top corner and side surface of the triangular pressing block (71).

4. The trailer traction mechanism protection frame according to claim 3, characterized in that: The triangular pressing block (71) is in the shape of an isosceles triangle, with the waist side being larger than the base side.

5. The trailer traction mechanism protection frame according to any one of claims 1 to 4, characterized in that: The outer sides of the front protective frame (3) and the rear protective frame (11) are both connected with supporting ribs.

6. The trailer traction mechanism protection frame according to claim 5, characterized in that: When the main frame (14) is detached from the trailer compartment (13), the flipping mechanism flips the front protection frame (3) into the compartment (131), and the main frame (14) is detached from the front end of the trailer compartment (13); When the main frame (14) and the trailer carriage (13) are hung, the front protection frame (3) is inside the compartment (131). After the hanging is completed, the flipping mechanism flips the front protection frame (3) out of the compartment (131), and the front protection frame (3) and the rear protection frame (11) are arranged on the front and rear sides of the saddle (2).

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