Anti-falling device for tractor

Abstract

The utility model provides an anti-falling device for a tractor, which comprises a fixing pin and a limiting structure, and the fixing pin is used for penetrating through a traction groove on a traction frame to be connected with the tractor; a limiting block is arranged at one end of the fixing pin, and a first limiting through hole is formed in the other end of the fixing pin; and a limiting structure can penetrate through the first limiting through hole to limit and fix the other end of the fixing pin. The two ends of the fixing pin are limited through the limiting block and the limiting structure, the fixing pin is prevented from moving out of the traction groove, and then a towed object is prevented from being separated from the tractor.

Description

Technical Field

[0001] The utility model relates to the technical field of transportation, and particularly to an anti - detachment device for a tractor. Background Art

[0002] In the airport, for many emergency operations such as the removal of damaged aircraft in the flight area, pavement repair, typhoon and flood prevention, etc., for the convenience of the transportation of emergency equipment and materials, it is generally transported by a tractor and multiple non - powered flatbed trucks. During drills and daily towing, it is often necessary to dispatch a tractor to tow a non - powered flatbed to pass through the flight area. When the equipment towed by the airport vehicle becomes loose, it may cause an aircraft collision accident to the aircraft parked overnight at the airport.

[0003] For the quickness and convenience of the normal use of the towing automatic detachment hook under emergency conditions, the existing towing automatic detachment hook consists of a fixed pin and a towing groove. When it is necessary to connect with the trailer hook, the metal pin is pulled and lifted by the towing rope in the cab, so that the trailer hook can be placed in the towing groove. The driver can conveniently operate the towing process in the carriage. However, after the trailer hook is connected, the fixed pin only relies on gravity to maintain its connection with the hook and the towing groove, and the driver cannot fully confirm the position of the fixed pin. In the case of large bumps on the driving road surface or misoperation by the driver in the carriage, there is a possibility that the fixed pin is accidentally pulled out or jolted out of the towing groove, posing a risk of anti - detachment pin, which will affect the operation of the service lane guarantee vehicle and even cause a serious accident of aircraft collision. Summary of the Utility Model

[0004] Aiming at the defects in the prior art, the purpose of the utility model is to provide an anti - detachment device for a tractor.

[0005] According to an anti - detachment device for a tractor provided by the utility model, it includes:

[0006] A fixed pin, which is used to pass through a towing groove on a towing frame and is connected with the tractor;

[0007] Wherein, a limiting block is arranged at one end of the fixed pin, and a first limiting perforation is arranged at the other end of the fixed pin;

[0008] A limiting structure, which can pass through the first limiting perforation to limit and fix the other end of the fixed pin.

[0009] Preferably, the limiting structure includes:

[0010] A first limiting pin rod, which can pass through the first limiting perforation to limit and fix the other end of the fixed pin;

[0011] Wherein, second limiting perforations and third limiting perforations are respectively arranged at both ends of the first limiting pin rod;

[0012] The first limiting ring is connected to one end of the first limiting pin rod through the second limiting hole and can pass through the third limiting perforation to limit and fix the other end of the first limiting pin rod.

[0013] Preferably, the limiting structure further includes: a first limiting block;

[0014] The first limiting block is arranged at one end of the first limiting pin rod, and the second limiting perforation is arranged on the first limiting block.

[0015] Preferably, the first limiting ring is a metal ring with partially overlapping structures in contact.

[0016] Preferably, the limiting structure includes:

[0017] A second limiting pin rod, which can limit and fix the other end of the fixing pin through the first limiting perforation;

[0018] A second limiting ring, rotatably arranged at one end of the second limiting pin rod and capable of abutting and fixing at the other end of the second limiting pin rod.

[0019] Preferably, the limiting structure further includes: a second limiting block;

[0020] The second limiting block is arranged at one end of the second limiting pin rod, and the second limiting ring is rotatably arranged on the second limiting block.

[0021] Preferably, the second limiting ring is a metal ring with two disconnected ends;

[0022] Two connecting holes are arranged on the second limiting block in a staggered manner, and the two disconnected ends of the second limiting ring are respectively connected and arranged on the second limiting block through the two connecting holes.

[0023] Preferably, the limiting structure includes:

[0024] A third limiting pin rod, which can pass through the first limiting perforation to limit and fix one end of the fixing pin;

[0025] Wherein, a fourth limiting perforation is arranged at one end of the third limiting pin rod;

[0026] A limiting plugging structure, which can pass through the fourth limiting perforation to limit and fix one end of the third limiting pin rod.

[0027] A connecting chain, the two ends of which are respectively connected and arranged with the other end of the third limiting pin rod and the limiting plugging structure.

[0028] Preferably, the limiting structure further includes: a limiting connecting ring;

[0029] The limiting connecting ring is arranged at the other end of the third limiting pin rod, and the two ends of the connecting chain are respectively connected to the limiting connecting ring and the limiting plug-in structure.

[0030] Preferably, the position limiting plug-in structure comprises:

[0031] A straight structure capable of passing through the fourth limiting through hole to limit and fix one end of the third limiting pin rod;

[0032] The curved structure has one end connected to one end of the straight structure, and the other end can be abutted and fixed on the other end of the straight structure.

[0033] Compared with the prior art, the utility model has the following beneficial effects:

[0034] 1. The utility model limits the two ends of the fixing pin by means of a limiting block and a limiting structure, thereby preventing the fixing pin from moving out of the traction groove, thereby preventing the towed object from escaping from the tractor.

[0035] 2. A limiting structure of the utility model adopts the form of combining a first limiting pin rod and a first limiting ring. The first limiting ring is configured as a circular metal limiting ring with partially overlapping structures, which can undergo a certain elastic deformation, similar to a key ring structure. By breaking apart the overlapping and abutting structures, the first limiting ring can be connected to the first limiting pin rod through the second limiting through-hole. After the fixing pin is placed in the traction groove, the first limiting pin rod is passed through the first limiting through-hole, and then the fixing pin is limited and fixed on the traction frame. The overlapping and abutting structures are then broken apart and passed through the third limiting through-hole, and then the first limiting pin rod is limited and fixed on the fixing pin. Through the above configuration, the fixing pin is completely limited and fixed on the traction frame, thereby preventing the fixing pin from falling off.

[0036] 3. A limiting structure of the utility model adopts the form of combining a second limiting pin rod and a second limiting ring. The second limiting ring is configured as a circular metal limiting ring with two disconnected ends, which can undergo a certain elastic deformation. By connecting the two disconnected ends to two staggered connecting holes, and the two connecting holes are arranged on two opposite side walls, after the fixing pin is placed in the traction groove, the second limiting pin rod is passed through the first limiting through-hole, and then the fixing pin is fixed on the traction frame. The second limiting ring is flipped over. Because the two connecting holes are staggered front and back, the two disconnected ends of the circular metal limiting ring are also staggered. When flipping forward or backward, the staggered position will generate elastic force, which can make the second limiting ring abut and be fixed on the second limiting pin rod, and then the second limiting pin rod is fixed on the fixing pin. Through the above-mentioned arrangement, the fixing pin is completely fixed on the traction frame, thereby preventing the fixing pin from falling off.

[0037] 4. A limiting structure of the utility model adopts the form of combining a third limiting pin rod and a limiting plug-in structure. The limiting plug-in structure is similar to a hairpin. After the fixing pin is placed in the traction groove, the third limiting pin rod is passed through the first limiting through-hole, and then the fixing pin is limited and fixed on the traction frame. The curved structure of the limiting plug-in structure is opened, and the straight structure of the limiting plug-in structure is inserted into the fourth limiting through-hole, and then the third limiting pin rod is limited and fixed on the fixing pin. Through the above arrangement, the fixing pin is completely limited and fixed on the traction frame, avoiding the fixing pin from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0039] Figure 1 is a structural schematic diagram of a traction frame;

[0040] Figure 2 It is a schematic diagram of the structure in which the fixing pin is installed on the traction frame;

[0041] Figure 3 The structure diagram of the limiting structure in the first embodiment Figure 1 ;

[0042] Figure 4 The structure diagram of the limiting structure in the first embodiment Figure 2 ;

[0043] Figure 5 It is a structural schematic diagram of the limiting structure in the second embodiment;

[0044] Figure 6 It is a structural schematic diagram of the limiting structure in the third embodiment;

[0045] Figure 7 It is a structural schematic diagram of the limiting structure in the fourth embodiment.

[0046] The figure shows:

[0047] Traction frame 1 Second limiting ring 7

[0048] Traction groove 101 Second limit block 8

[0049] Fixing pin 2 Connection hole 801

[0050] The first limiting hole 201 The third limiting pin 9

[0051] Limiting ring 202 Fourth limiting hole 901

[0052] First limit pin 3 limit plug structure 10

[0053] Second limiting perforation 301 Straight structure 1001

[0054] The third limiting perforation 302, the curved structure 1002

[0055] The first limiting ring 4, the connecting chain 11

[0056] The first limiting block 5, the limiting connecting ring 12

[0057] The second limiting pin rod 6, the opening structure 13 Specific embodiments

[0058] The present utility model will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several changes and improvements can still be made. These all belong to the protection scope of the present utility model.

[0059] Example 1:

[0060] As Figures 1 to 4 shown, this embodiment provides an anti - detachment device for a tractor, including: a fixing pin 2 and a limiting structure. The fixing pin 2 is used to pass through a traction groove 101 on a traction frame 1 and is connected to the tractor. The traction frame 1 is a fixing frame carried by the tractor itself. The traction frame 1 is fixedly connected to the tractor; a traction groove 101 is provided on the first traction frame 1; the fixing pin 2 can pass through the traction groove 101 and be connected to the traction frame 1; a limiting ring 202 is provided at one end of the fixing pin 2, and a first limiting perforation 201 is provided at the other end of the fixing pin 2; the limiting structure can pass through the first limiting perforation 201 to limit and fix the other end of the fixing pin 2.

[0061] The limiting structure includes: a first limiting pin rod 3 and a first limiting ring 4. The first limiting pin rod 3 can pass through the first limiting perforation 201 to limit and fix the other end of the fixing pin 2; second limiting perforations 301 and third limiting perforations 302 are respectively provided at both ends of the first limiting pin rod 3; the first limiting ring 4 passes through the second limiting hole 301 and is connected to one end of the first limiting pin rod 3, and can pass through the third limiting perforation 302 to limit and fix the other end of the first limiting pin rod 3. The first limiting ring 4 is a metal ring with partially overlapping and abutting structures. Figure 3 Part A in it is the overlapping and abutting structure.

[0062] The limiting structure further includes: a first limiting block 5. The first limiting block 5 is provided at one end of the first limiting pin rod 3, and the second limiting perforation 301 is provided on the first limiting block 5.

[0063] The limiting structure of this embodiment adopts the form of a combination of a first limiting pin rod 3 and a first limiting ring 4. The first limiting ring 4 is configured as a circular metal limiting ring with partially overlapping structures, which can undergo a certain elastic deformation, similar to a key ring structure. By breaking apart the overlapping and abutting structures, the first limiting ring 4 can be connected to the first limiting pin rod 3 through the second limiting through-hole 301. After the fixing pin 2 is placed into the traction groove 101, the first limiting pin rod 3 is passed through the first limiting through-hole 201, and then the fixing pin 2 is limited and fixed on the traction frame 1, and then the overlapping and abutting structures are broken apart and passed through the third limiting through-hole 302, and then the first limiting pin rod 3 is limited and fixed on the fixing pin 2. Through the above configuration, the fixing pin 2 is completely limited and fixed on the traction frame 1, thereby preventing the fixing pin 2 from falling off.

[0064] Example 2:

[0065] like Figure 5 As shown, the difference between this embodiment and embodiment 1 is that an opening structure 13 is provided on the third limiting through-hole 302, and the first limiting ring 4 can be pressed into the third limiting through-hole 302 through the opening structure 13, thereby limiting and fixing the first limiting pin 3.

[0066] Example 3:

[0067] like Figure 6 As shown, the difference between this embodiment and embodiment 1 is that the limit pin includes: a second limit pin rod 6 and a second limit ring 7. The second limit pin rod 6 can limit and fix the other end of the fixing pin 2 through the first limit through hole 201; the second limit ring 7 is rotatably arranged at one end of the second limit pin rod 6 and can be abutted and fixed at the other end of the second limit pin rod 6.

[0068] The limiting pin further comprises: a second limiting block 8. The second limiting block 8 is arranged at one end of the second limiting pin rod 6, and the second limiting ring 7 is rotatably arranged on the second limiting block 8.

[0069] The second limiting ring 7 is a metal ring with two disconnected ends. The second limiting block 8 is staggered with two connecting holes 801 , and the two disconnected ends of the second limiting ring 7 are connected to the second limiting block 8 through the two connecting holes 801 . Figure 4 Part B in the circuit is the disconnect end.

[0070] The limiting structure of this embodiment adopts the form of combination of the second limiting pin rod 6 and the second limiting ring 7. The second limiting ring 7 is set as a circular metal limiting ring with two disconnected ends, which can undergo a certain elastic deformation. By connecting the two disconnected ends to two misaligned connecting holes 801, and the two connecting holes 801 are arranged on two opposite side walls. After the fixing pin 2 is placed into the traction groove 101, the second limiting pin rod 6 is passed through the first limiting through hole 201, and then the fixing pin 2 is limited and fixed on the traction frame 1. When the second limiting ring 7 is flipped, because the two connecting holes 801 are misaligned front and back, the two disconnected ends of the circular metal limiting ring are also misaligned, and a elastic force will be generated during forward or backward flipping, which can make the second limiting ring 7 abut and be fixed on the second limiting pin rod 6, and then the second limiting pin rod 6 is limited and fixed on the fixing pin 2. Through the above settings, the fixing pin 2 is completely limited and fixed on the traction frame 1, avoiding the detachment of the fixing pin 2.

[0071] Example 4:

[0072] As Figure 7 shown, the difference between this embodiment and Embodiment 1 is that the limiting pin includes: a third limiting pin rod 9, a limiting insertion structure 10, and a connecting chain 11. The third limiting pin rod 9 can pass through the first limiting through hole 201 to limit and fix one end of the fixing pin 2; a fourth limiting through hole 901 is arranged at one end of the third limiting pin rod 9; the limiting insertion structure 10 can pass through the fourth limiting through hole 901 to limit and fix one end of the third limiting pin rod 9. The two ends of the connecting chain 11 are respectively connected to the other end of the third limiting pin rod 9 and the limiting insertion structure 10.

[0073] The limiting pin further includes: a limiting connection ring 12. The limiting connection ring 12 is arranged at the other end of the third limiting pin rod 9, and the two ends of the connecting chain 11 are respectively connected to the limiting connection ring 12 and the limiting insertion structure 10.

[0074] The limiting insertion structure 10 includes: a straight structure 1001 and a curved structure 1002. The straight structure 1001 can pass through the fourth limiting through hole 901 to limit and fix one end of the third limiting pin rod 9; the curved structure 1002, one end of which is connected to one end of the straight structure 1001, and the other end of which can abut and be fixed to the other end of the straight structure 100.

[0075] The limiting structure of this embodiment adopts the form of combining a third limiting pin rod 9 and a limiting plug-in structure 10. The limiting plug-in structure 10 is similar to a hairpin. After the fixing pin 2 is placed in the traction groove 101, the third limiting pin rod 9 is passed through the first limiting through-hole 201, and then the fixing pin 2 is limited and fixed on the traction frame 1. The curved structure 1002 of the limiting plug-in structure 10 is opened, and the straight structure 1001 of the limiting plug-in structure 10 is inserted into the fourth limiting through-hole 901, and then the third limiting pin rod 9 is limited and fixed on the fixing pin 2. Through the above arrangement, the fixing pin 2 is completely limited and fixed on the traction frame 1, and the fixing pin 2 is prevented from falling off.

[0076] The utility model provides a perforation on the fixing pin and adds a limiting structure. After the vehicle is hooked, the operator confirms whether the position is in place and fixes the limiting structure at the end. This solution has the best operating convenience and almost no additional cost compared to the existing structure. The limiting structure can be any of the following: an R-type cotter pin, an O-type pin, and an O-type anti-loss buckle pin. Fixing with an O-type anti-loss buckle pin can more effectively ensure the safe operation of the tractor. The improved automatic unhooking device of the tractor can ensure that during the driving of the tractor, the towed equipment or flatbed truck will not be loosened due to bumps or driver misoperation, thereby avoiding unsafe incidents caused by this.

[0077] The device of the utility model prevents the traction pin from falling out during the traction process of the tractor, and prevents the accidental unhooking of the locking mechanism. With almost no increase in operating costs, the safety upgrade and transformation of the tractor operation is completed through the most economical transformation cost, further reducing the risk of apron operation and providing practical protection for the safe operation of the airport.

[0078] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0079] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

Claims

1. A anti - detachment device for a tractor, characterized in that, Including: A fixing pin (2) for passing through a towing groove (101) on a towing frame (1) and connecting to a towing vehicle; Wherein, one end of the fixing pin (2) is provided with a limiting ring (202), and the other end of the fixing pin (2) is provided with a first limiting perforation (201); A limiting structure capable of passing through the first limiting perforation (201) to limit and fix the other end of the fixing pin (2).

2. The anti-disengagement device for a tractor according to claim 1, characterized in that, The limiting structure includes: A first limiting pin rod (3) capable of passing through the first limiting perforation (201) to limit and fix the other end of the fixing pin (2); Wherein, both ends of the first limiting pin rod (3) are respectively provided with a second limiting perforation (301) and a third limiting perforation (302); A first limiting ring (4) connected through the second limiting perforation (301) and arranged at one end of the first limiting pin rod (3), and capable of passing through the third limiting perforation (302) to limit and fix the other end of the first limiting pin rod (3).

3. The anti-disengagement device for a tractor according to claim 2, characterized in that, The limiting structure further includes: a first limiting block (5); The first limiting block (5) is arranged at one end of the first limiting pin rod (3), and the second limiting perforation (301) is arranged on the first limiting block (5).

4. The anti-disengagement device for a tractor according to claim 2, wherein, The first limiting ring (4) is a metal ring with partially overlapping structures in contact.

5. The anti-disengagement device for a tractor according to claim 1, characterized in that, The limiting structure includes: A second limiting pin rod (6) capable of limiting and fixing the other end of the fixing pin (2) through the first limiting perforation (201); A second limiting ring (7) rotatably arranged at one end of the second limiting pin rod (6) and capable of abutting and fixing at the other end of the second limiting pin rod (6).

6. The anti-disengagement device for a tractor according to claim 5, characterized in that, The limiting structure further includes: a second limiting block (8); The second limiting block (8) is arranged at one end of the second limiting pin rod (6), and the second limiting ring (7) is rotatably arranged on the second limiting block (8).

7. The anti-disengagement device for a tractor according to claim 6, wherein, The second limiting ring (7) is a metal ring with two disconnected ends; Two connecting holes (801) are arranged on the second limiting block (8) in a staggered manner, and the two disconnected ends of the second limiting ring (7) are respectively connected to the second limiting block (8) through the two connecting holes (801).

8. The anti-disengagement device for a tractor according to claim 1, characterized in that, The limiting structure includes: A third limiting pin rod (9) capable of passing through the first limiting perforation (201) to limit and fix one end of the fixing pin (2); Wherein, one end of the third limiting pin rod (9) is provided with a fourth limiting perforation (901); A limiting plugging structure (10) capable of passing through the fourth limiting perforation (901) to limit and fix one end of the third limiting pin rod (9); A connecting chain (11) with both ends respectively connected to the other end of the third limiting pin rod (9) and the limiting plugging structure (10).

9. The anti-disengagement device for a tractor according to claim 8, wherein, The limiting structure further includes: a limiting connecting ring (12); The limiting connecting ring (12) is arranged at the other end of the third limiting pin rod (9), and both ends of the connecting chain (11) are respectively connected to the limiting connecting ring (12) and the limiting plugging structure (10).

10. The anti-disengagement device for a tractor according to claim 9, characterized in that, The limiting plugging structure (10) includes: The straight structure (1001) can pass through the fourth limit perforation (901) to limit and fix one end of the third limit pin rod (9); The curved structure (1002) has one end connected to one end of the straight structure (1001), and the other end can be abutted and fixed to the other end of the straight structure (1001).

Images