Railway transportation equipment anti-drop connecting device

Abstract

The utility model belongs to the field of transport machinery connecting devices, and particularly relates to an anti-drop connecting device of railway transport equipment, which comprises a connecting piece (4) and a mounting seat (5), the connecting piece (4) is longitudinally and movably inserted into the mounting seat (5); an anti-falling pin shaft (1) is transversely arranged between the connecting piece (4) and the mounting seat (5); the anti-falling pin shaft (1) comprises a pin head (101), a pin rod (102) and a pin tail (104); a pin rod hole (103) is formed in the pin rod (102); a plug connector (3) is arranged in the pin rod hole (103); a limiting sleeve (2) is sleeved on the anti-falling pin shaft (1); and one end of the limiting sleeve (2) is connected with the pin tail (104), and the other end is connected with the outer wall of the mounting seat (5). The pin shaft can be prevented from moving in the axial direction, abrasion failure and shearing are avoided, the secondary anti-disengagement function is achieved, and the daily inspection and maintenance workload of railway transportation equipment can be remarkably reduced.

Description

Technical Field

[0001] The utility model belongs to the field of connection devices for transportation machinery, and particularly relates to an anti-disengagement connection device for railway transportation equipment. Background Art

[0002] A large number of components of transportation machinery such as railway locomotives, vehicles and self-propelled running equipment are connected by pin shafts. During use, due to part wear and the vibration of transportation machinery, the split pins or rivets installed on the pin shafts may break. If not inspected and processed in time, the pin shafts may pop out or fall off, causing railway traffic accidents. To solve the problem of pin shaft popping out, many scientific research departments, transportation machinery design and manufacturing units have done a lot of research work and developed various pin shafts. However, due to the constraints of the assembly space of transportation machinery, the tooling used during installation and the assembly convenience for batch use when in use, the existing pin shaft connection solutions cannot meet the requirements. Content of the Utility Model

[0003] The utility model aims to overcome the deficiencies of the prior art and provide an anti-disengagement connection device for railway transportation equipment that can inhibit the axial movement of the pin shaft, will not cause wear failure or be subjected to shear, has a secondary anti-disengagement function, and can significantly reduce the daily inspection and maintenance workload of railway transportation equipment.

[0004] To solve the above technical problems, the utility model is realized as follows:

[0005] An anti-disengagement connection device for railway transportation equipment includes a connecting piece and a mounting seat; the connecting piece is longitudinally movably inserted into the mounting seat; an anti-disengagement pin shaft is transversely arranged between the connecting piece and the mounting seat; the anti-disengagement pin shaft includes a pin head, a pin rod and a pin tail; a pin rod hole is arranged on the pin rod on the side far from the pin head; a plug-in piece is arranged in the pin rod hole; a limiting sleeve is sleeved on the anti-disengagement pin shaft; one end of the limiting sleeve is connected to the pin tail, and the other end is connected to the outer wall of the mounting seat.

[0006] Further, the pin tail can adopt a single-tail, double-tail or multi-tail structure that can be plastically bent.

[0007] Further, one end of the limiting sleeve is provided with a notch; the notch avoids the two ends of the plug-in piece.

[0008] Further, the plug-in piece can adopt a rivet or a split pin.

[0009] Further, the limiting sleeve can adopt a high molecular cylindrical structure.

[0010] The anti-loosening pin shaft of the present utility model can adopt a flat-tail anti-loosening pin shaft made of metal. After the tail of the pin is bent, it has a certain elasticity, which can damp the axial movement of the pin shaft and prevent the pin shaft from coming out; at the same time, due to the separation effect of the polymer material limit sleeve, the pin tail does not contact the metal, and abrasion failure and shear will not occur, enhancing the practicability of the anti-loosening pin shaft. A pin rod hole is provided on the pin rod of the anti-loosening pin shaft, and the inserted split pin or rivet is protected by the limit sleeve. Therefore, the split pin or rivet does not bear the shear force and plays a protective role in preventing the pin from coming out. Compared with the existing pin shaft assembly mechanism, the anti-loosening pin shaft of the present utility model will not cause shear to the split pin or rivet during lateral movement, has a secondary anti-loosening function, its structural performance is more reliable, the tail characteristics are more obvious and easy to identify after assembly, and the daily inspection and maintenance workload of railway transportation equipment is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present utility model will be further described below in conjunction with the drawings and specific embodiments. The protection scope of the present utility model is not limited to the description of the following content.

[0012] Figure 1 It is the front view structural schematic diagram when the rivet scheme is installed for the present utility model;

[0013] Figure 2 It is the front view structural schematic diagram when the split pin scheme is installed for the present utility model;

[0014] Figure 3 It is the front view of the anti-loosening pin shaft of the present utility model;

[0015] Figure 4 For the present utility model Figure 3 is the top view;

[0016] Figure 5 It is the structural schematic diagram of the limit sleeve of the present utility model.

[0017] In the figure: 1. Anti-loosening pin shaft; 101. Pin head; 102. Pin rod; 103. Pin rod hole; 104. Pin tail; 2. Limit sleeve; 201. Notch; 3. Plug-in part; 4. Connecting part; 5. Mounting seat. SPECIFIC EMBODIMENTS

[0018] As Figure 1 and Figure 2 shown, Figure 1 It is the front view structural schematic diagram when the rivet scheme is installed for the present utility model, Figure 2This is the front view structural schematic diagram of the cotter pin installation scheme for the present utility model. The anti-disengagement connection device for railway transportation equipment includes a connecting member 4 and a mounting seat 5; the connecting member 4 is longitudinally movably inserted into the mounting seat 5; a disengagement prevention pin shaft 1 is transversely arranged between the connecting member 4 and the mounting seat 5; the disengagement prevention pin shaft 1 includes a pin head 101, a pin rod 102 and a pin tail 104; a pin rod hole 103 is arranged on the pin rod 102 on the side far from the pin head 101; a plug-in member 3 is arranged in the pin rod hole 103; a limiting sleeve 2 is sleeved on the disengagement prevention pin shaft 1; one end of the limiting sleeve 2 is connected to the pin tail 104, and the other end is connected to the outer wall of the mounting seat.

[0019] See Figure 3 and Figure 4 As shown, the pin tail 104 of the present utility model adopts a single-tail, double-tail or multi-tail structure that can be plastically bent. Of course, the pin tail 104 can also adopt other structural forms. See Figure 5 As shown, one end of the limiting sleeve 2 of the present utility model is provided with a notch 201; the notch 201 avoids both ends of the plug-in member 3. The plug-in member 3 of the present utility model is a rivet or a cotter pin. When the disengagement prevention pin shaft of the present utility model moves transversely, it will not cause shear to the cotter pin or the rivet, and has a secondary anti-disengagement function. The limiting sleeve 2 of the present utility model adopts a polymer cylindrical structure.

[0020] After the pin tail of the disengagement prevention pin shaft of the present utility model is bent, it is pressed on the limiting sleeve, so that the rivet or the cotter pin is not subjected to the shearing force of the mounting seat, and the flat-tail disengagement prevention pin shaft is inhibited from moving axially. The disengagement prevention pin shaft is made of carbon steel or low alloy steel, and is manufactured by die forging and machining. It is made into different sizes according to the installation parts of railway transportation machinery, and its pin tail can be made into a single-tail, double-tail or multi-tail form and can be plastically bent. See Figure 5 As shown, the limiting sleeve is made of a polymer material such as nylon or carbon fiber, and is adapted to the size of the flat-tail disengagement prevention pin. One end is made into a notch and is adapted to the position of the pin rod hole of the flat-tail disengagement prevention pin shaft. The present utility model solves the problems that most of the existing pin shaft installation schemes do not have an anti-disengagement function and may pop out or fall off due to external reasons during use, and eliminates the potential safety hazards of railway transportation equipment.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0022] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A railway transportation equipment anti-drop connection device, comprising a connection piece (4) and a mounting seat (5); the connection piece (4) and the mounting seat (5) are longitudinally movably plugged in; characterized in that: An anti-dropout pin shaft (1) is transversely arranged between the connecting member (4) and the mounting seat (5); the anti-dropout pin shaft (1) comprises a pin head (101), a pin rod (102) and a pin tail (104); a pin rod hole (103) is arranged on the pin rod (102) at a side away from the pin head (101); a plug-in member (3) is arranged in the pin rod hole (103); a limiting sleeve (2) is sleeved on the anti-dropout pin shaft (1); one end of the limiting sleeve (2) is connected to the pin tail (104), and the other end thereof is connected to the outer wall of the mounting seat (5).

2. The anti-drop connection device for railway transportation equipment according to claim 1, characterized in that: The pin tail (104) adopts a plastically bendable single-tail, double-tail or multi-tail structure.

3. The anti-detachment connection device for railway transportation equipment according to claim 2, characterized in that: A notch (201) is provided at one end of the limiting sleeve (2); the notch (201) avoids the two ends of the connector (3).

4. The anti-detachment connection device for railway transportation equipment according to claim 3, characterized in that: The plug-in connector (3) is a rivet or a cotter pin.

5. The anti-detachment connection device for railway transportation equipment according to claim 4, characterized in that: The limiting sleeve (2) adopts a polymer cylindrical structure.

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