Wagon flat cotter pin assembling and disassembling device

Abstract

The utility model belongs to the field of railway vehicle maintenance tools, and particularly relates to a railway wagon flat cotter pin assembling and disassembling device. Comprising two sleeves and two counter-force arms. The two counter-force arms can be connected in a relatively rotating manner in a joint inserted by the joint pin; the joint divides the counter-force arm into a clamp body part and a handle part; the clamp body part comprises a clamp body and a clamp head; one side of the sleeve is hinged to the plier head, an end opening in the other side of the sleeve serves as an insertion and extraction opening of a foot of the flat cotter pin, a hinged shaft of the sleeve is parallel to the joint pin, the plier body straddles the flat cotter pin, and when the sleeve is folded back towards the inner side of the plier body, the foot of the flat cotter pin is allowed to be inserted into the sleeve; the assembling and disassembling device for the flat cotter pin of the railway wagon is small and reasonable in overall design, the action principle of common pliers is integrated into the assembling and disassembling device, and the advantages of rapidness and time saving are achieved. The whole material has the advantages of being light in weight, high in strength, convenient to carry and long in service life, and meanwhile the defect that various tools need to be carried for handling the basic braking device in the prior art is overcome.

Description

Technical Field

[0001] The utility model belongs to the field of railway vehicle maintenance tools, in particular to a railway freight car flat cotter pin loader and unloader. Background Art

[0002] The basic brake devices of railway freight cars are all connected by cotter pins, and cotter pins generally come in two types: round cotter pins and flat cotter pins. The technical requirement for flat cotter pins is that the two legs need to be split in both directions and wrap around the pin shaft, which is a relatively high technical requirement. The traditional processing tool is to hold a flat sleeve in one hand and forcefully break the two legs of the cotter pin. This method requires the inspector to be strong and cannot restore the two legs to a parallel state at one time, and the technical inspection time requirement must be considered in the rapid maintenance of freight car failures. Therefore, it is time-consuming and laborious for the inspector to handle it. Utility Model Content

[0003] The utility model aims to solve the problem that loading and unloading a flat cotter pin is time-consuming and laborious due to space constraints during the maintenance of a railway freight car basic brake device.

[0004] The utility model provides the following technical solutions: a railway freight car flat cotter pin loader and unloader, comprising two sleeves and two reaction arms;

[0005] The two reaction arms are connected in a joint through which a joint pin is inserted so as to be relatively rotatable; the joint divides the reaction arm into a pliers body and a handle;

[0006] The pliers body includes a pliers body and a pliers head; one side of the sleeve is hinged to the pliers head, and the other side port serves as the insertion and extraction port for the foot of the flat cotter pin. The hinge axis of the sleeve is parallel to the joint pin, and the pliers body straddles the flat cotter pin. When the sleeve is folded back to the inside of the pliers body, the foot of the flat cotter pin is allowed to be inserted into the sleeve.

[0007] Further, the sleeve is a flat sleeve that can only accommodate a single leg of the flat cotter pin.

[0008] Furthermore, a notch is provided on the connection side of the sleeve and the pliers head to form two hinged ears, and the sleeve is connected to the pliers head via the two hinged ears.

[0009] Furthermore, a nut is fixed on the pliers head, and two hinged ears of the sleeve and the nut are connected by bolts.

[0010] Furthermore, the rotation angle of the sleeve is greater than or equal to 320°.

[0011] Furthermore, the handle portion includes a first arc segment and a second arc segment, the first arc segment and the second arc segment are opposite in direction and smoothly connected, the arc length of the first arc segment is greater than that of the second arc segment, and the first arc segment is connected to the pliers body.

[0012] Furthermore, the pliers body includes a first part and a second part, the angle between the first part and the second part is an obtuse angle, the length of the second part is greater than the first part, the first part is connected to the handle part, and the second part is connected to the pliers head.

[0013] Furthermore, one end of the pliers head connected to the sleeve is configured as a pointed end.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] The utility model provides a railway freight car flat cotter pin loader and unloader, which uses a sleeve that can rotate 320 degrees to be sleeved between the two legs of the flat cotter pin to fix the flat cotter pin, and then uses the lever principle to force the handle to be combined or opened, and the force is transmitted to the sleeve to open or fold the two legs of the flat cotter pin, which effectively improves the handling time and ensures the organization of train operation. The overall design of the railway freight car flat cotter pin loader and unloader is compact and reasonable, and the working principle of ordinary pliers is integrated into the loader and unloader, achieving the advantages of speed and time saving. The overall material has the characteristics of light weight and high strength, which is convenient to carry and has a long service life. At the same time, it solves the disadvantage of carrying multiple tools to handle the basic brake device in the past. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the detailed features of the pliers body and the handle;

[0018] Figure 3 It is a schematic diagram of the structure of a flat cotter pin.

[0019] In the figure: 1-sleeve; 2-pliers head; 3-pliers body; 3.1-first part; 3.2-second part; 4-handle; 4.1-first arc; 4.2-second arc segment; 5-joint pin; 6-joint; 7-bolt; 8-flat cotter pin. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] like Figure 1As shown: a railway freight car flat cotter pin loader and unloader, including two sleeves 1 and two reaction arms; the two reaction arms are connected to be relatively rotatable in a joint 6 through which a joint pin 5 is inserted; the joint 6 divides the reaction arm into a pliers body part and a handle part 4; the pliers body part includes a pliers body 3 and a pliers head 2; one side of the sleeve 1 is hinged to the pliers head 2, and the other side port serves as an insertion and extraction port for the foot of the flat cotter pin, the hinge axis of the sleeve 1 is parallel to the joint pin 5, the pliers body 3 straddles the flat cotter pin, and when the sleeve 1 is folded back to the inside of the pliers body 3, the foot of the flat cotter pin is allowed to be inserted into the sleeve 1.

[0022] The sleeve 1 is a flat sleeve that can only accommodate a single leg of a flat cotter pin, so as to prevent the sleeve 1 from shaking when a force is applied to the leg of the flat cotter pin. A notch is provided on the connecting side of the sleeve 1 and the pliers head 2 to form two hinged ears, and the sleeve 1 is connected to the pliers head 2 through the two hinged ears.

[0023] A nut is fixed on the pliers head 2, and two hinged ears of the sleeve 1 and the nut are connected by bolts 7. One end of the pliers head 2 connected to the sleeve 1 is set as a tip, which can increase the rotation angle of the sleeve 1. The rotation angle of the sleeve 1 is greater than or equal to 320°.

[0024] like Figure 2 As shown: the handle portion 4 includes a first arc segment 4.1 and a second arc segment 4.2, the first arc segment 4.1 and the second arc segment 4.2 are opposite in direction and smoothly connected, the arc length of the first arc segment 4.1 is greater than that of the second arc segment 4.2, and the first arc segment 4.1 is connected to the pliers body. The handle portion 4 is the hand-held part of the entire loader and unloader, and the arc design of the handle portion 4 makes it more comfortable to hold and can exert force well.

[0025] The pliers body 3 includes a first part 3.1 and a second part 3.2. The included angle between the first part 3.1 and the second part 3.2 is an obtuse angle. The second part 3.2 is longer than the first part 3.1. The first part 3.1 is connected to the handle part 4, and the second part 3.2 is connected to the pliers head 2.

[0026] The steps to remove the cotter pin using a loader are as follows:

[0027] 1. When the flat cotter pin is installed, its two legs are facing downwards. When removing the flat cotter pin, insert the two sleeves 1 on the loader into the two legs of the flat cotter pin respectively to fix it firmly.

[0028] 2. Hold the two handles 4 with both hands respectively, stretch the loader and unloader open and pull it out at the same time, and bend the two legs of the flat cotter pin upwards.

[0029] 3. Pull out the loader and remove the cotter pin from the pin hole with a hammer and a punch to complete the removal.

[0030] The steps for installing a cotter pin using a loader are as follows:

[0031] 1. When installing the cotter pin, insert the two sleeves 1 on the loader into the two legs of the cotter pin respectively to fix it firmly.

[0032] 2. Hold the two handles 4 with both hands, open the loader and push down hard, and when the two legs of the flat cotter pin are facing downward, bring the two handles 4 together completely to make the two legs of the flat cotter pin fully covered. Pull out the loader and the installation of the flat cotter pin is complete.

[0033] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A railway freight car cotter pin loader and unloader, characterized in that: It comprises two sleeves (1) and two reaction arms; The two reaction arms are connected in a relatively rotatable manner in a joint (6) through which a joint pin (5) is inserted; The joint (6) divides the reaction arm into a pliers body portion and a handle portion (4); The pliers body comprises a pliers body (3) and a pliers head (2); one side of a sleeve (1) is hinged to the pliers head (2), and the other side port serves as an insertion and extraction port for the foot of a flat split pin; the hinge axis of the sleeve (1) is parallel to the joint pin (5); the pliers body (3) straddles the flat split pin; when the sleeve (1) is folded back toward the inside of the pliers body (3), the foot of the flat split pin is allowed to be inserted into the sleeve (1).

2. A railway freight car cotter pin loader and unloader according to claim 1, characterized in that: The sleeve (1) is a flat sleeve that can only accommodate a single leg of a flat cotter pin.

3. A railway freight car cotter pin loader and unloader according to claim 2, characterized in that: A notch is provided on the connection side of the sleeve (1) and the pliers head (2) to form two hinged ears, and the sleeve (1) is connected to the pliers head (2) via the two hinged ears.

4. A railway freight car cotter pin loader and unloader according to claim 3, characterized in that: A nut is fixed on the pliers head (2), and the two hinged ears of the sleeve (1) and the nut are connected by bolts (7).

5. The railway freight car cotter pin loader and unloader according to claim 3, characterized in that: The rotation angle of the sleeve (1) is greater than or equal to 320°.

6. A railway freight car cotter pin loader and unloader according to any one of claims 1 to 5, characterized in that: The handle portion (4) comprises a first arc segment (4.1) and a second arc segment (4.2); the first arc segment (4.1) and the second arc segment (4.2) are in opposite directions and smoothly connected; the arc length of the first arc segment (4.1) is greater than that of the second arc segment (4.2); and the first arc segment (4.1) is connected to the pliers body.

7. A railway freight car cotter pin loader and unloader according to any one of claims 1 to 5, characterized in that: The pliers body (3) comprises a first part (3.1) and a second part (3.2), the angle between the first part (3.1) and the second part (3.2) is an obtuse angle, the length of the second part (3.2) is greater than that of the first part (3.1), the first part (3.1) is connected to the handle part (4), and the second part (3.2) is connected to the pliers head (2).

8. A railway freight car cotter pin loader and unloader according to claim 7, characterized in that: One end of the pliers head (2) connected to the sleeve (1) is configured as a pointed end.

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