CN219466023U - Lower guide rod nut dismounting tool for pantograph of motor train unit - Google Patents

Abstract

The utility model belongs to the field of overhauling and maintenance of motor train units, and particularly discloses a tool for disassembling and assembling nuts of a lower guide rod of a pantograph of a motor train unit. The tool for disassembling and assembling the lower guide rod nuts of the pantograph of the motor train unit comprises a tool main body; the sleeve structure is arranged on the inner side of one end of the tool main body, is round and is matched with the annular fixing nut in size, and a protruding block matched with the outer circumferential groove of the annular fixing nut is arranged on the inner wall of the sleeve structure; the spanner operation hole is arranged at the inner side of the other end of the tool main body; a force application wrench acting on the wrench operation hole; the end side of the sleeve structure and the end side of the spanner operation hole are a group of opposite end sides on the tool main body. The tool disclosed by the utility model has the advantages of simple structure and convenience in operation, and can be used for rapidly detaching and installing the annular fixing nut, so that the replacement or correction efficiency of the lower guide rod is improved.

Description

A tool for disassembling and assembling the nut of the lower guide rod of the pantograph of an EMU

technical field

The utility model belongs to the field of overhaul and maintenance of a motor train unit, and relates to a tool for disassembling and assembling a guide rod nut under a pantograph of a motor train unit.

Background technique

The pantograph lower guide rod of CRH380B(L) EMU is an important part supporting the pantograph assembly. It is mainly composed of a lower rod, a fixing nut and a connecting part. The pantograph frame is connected.

In the previous maintenance process, many faults were found that the lower guide rod was deformed and bent due to the impact of the pantograph. In this case, the lower guide rod must be replaced or corrected.

However, when replacing or correcting the lower guide rod, it is necessary to disassemble the ring fixing nut connecting the lower guide rod and the lower arm. The ring fixing nut is a special-shaped part, and its structure is shown in FIG. 1 .

Four grooves 102 are uniformly distributed on the outer circumference of the ring fixing nut 101 .

At present, there is no suitable removal tool in the tool room, so the ring fixing nut is extremely difficult to remove, and other components are easily damaged during the removal process.

Therefore, every time there is a fault, it is necessary to rely on the manufacturer to deal with it. Sometimes the manufacturer cannot be in place at the first time, which will greatly affect the troubleshooting, and then affect the safety of the train on time.

It can be seen that due to the lack of suitable ring fixing nut removal tooling, the lower guide rod cannot be replaced or corrected in time, which affects the efficiency of EMU maintenance.

Utility model content

The purpose of the utility model is to provide a disassembly and assembly tool for the lower guide rod nut of the pantograph of the EMU, which has a simple structure, and can quickly realize the disassembly and installation of the ring-shaped fixing nut, and improves the replacement or correction efficiency of the lower guide rod.

In order to achieve the above object, the utility model adopts the following technical solutions:

A tool for disassembling and assembling the nut of the lower guide rod of the pantograph of an EMU, comprising:

including tooling body;

The sleeve structure arranged on the inner side of one end of the tooling body, the sleeve structure is circular, and its size is adapted to the ring fixing nut connected between the lower guide rod and the lower arm; on the inner wall of the sleeve structure, there is a ring fixing nut The protrusion that matches the outer circumferential groove of the nut;

The wrench operation hole provided on the inner side of the other end of the tooling body;

As well as a force applying wrench, the shape and size of the force applying end of the force applying wrench are adapted to the shape and size of the wrench operating hole, and can be matched with the wrench operating hole in a plug-in manner;

Wherein, the end side of the tooling main body where the sleeve structure is located and the tooling main body end side where the wrench operation hole is located specifically refer to a group of opposite end sides on the tooling main body.

Preferably, the number of protrusions is equal to the number of grooves, and each protrusion is evenly arranged on the inner wall of the sleeve structure.

Preferably, there are four protrusions and four grooves.

Preferably, the main body of the frock, the sleeve structure, the bump and the wrench operating hole are integrally formed.

Preferably, the wrench operation hole is an inner square operation hole or an inner hexagon operation hole.

Preferably, the force wrench adopts a T-type wrench;

The shape and size of the force-applying end of the T-shaped wrench are compatible with the shape and size of the wrench operating hole.

The utility model has the following advantages:

As mentioned above, the utility model relates to a tool for disassembling and assembling the nut of the lower guide rod of the pantograph of an EMU. A sleeve structure is arranged on the inner side of one end of the tool, wherein the sleeve structure has the same structure as (the lower guide rod and the lower arm The shape of the ring-shaped fixing nut that is connected between them is adapted to the shape, and the inner wall of the sleeve structure is provided with a bump that matches the outer circumferential groove of the ring-shaped fixing nut, and the inner side of the other opposite end of the tooling is a wrench operation hole. It is convenient to use an auxiliary wrench to apply force. When it is necessary to remove the pantograph lower guide rod nut (that is, the ring fixing nut), it is only necessary to align the sleeve structure with the ring fixing nut, and insert the protrusion into the corresponding groove, and use a wrench to extend the other end into the wrench operation hole The fast disassembly and installation of the ring fixing nut can be realized by twisting, which greatly improves the replacement or correction efficiency of the lower guide rod.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

Fig. 1 is a schematic structural diagram of a ring fixing nut.

Fig. 2 is a schematic diagram of one end of the disassembly and assembly tooling for the guide rod nut under the pantograph of the EMU in Embodiment 1 of the utility model.

Fig. 3 is a side view of the assembly and disassembly tooling for the guide rod nut under the pantograph of the EMU in Embodiment 1 of the utility model.

Fig. 4 is a schematic diagram of the other end of the disassembly and assembly tooling for the guide rod nut under the pantograph of the EMU in Embodiment 1 of the utility model.

Fig. 5 is a structural schematic diagram of a T-shaped wrench matched with the bolt removal tool in Example 1 of the present invention.

Fig. 6 is a schematic diagram of the other end of the disassembly and assembly tooling for the guide rod nut under the pantograph of the EMU in Embodiment 2 of the utility model.

Fig. 7 is a schematic structural diagram of a T-shaped wrench matched with the bolt dismounting tool in Example 2 of the present invention.

Among them, 101-annular fixing nut, 102-outer circumferential groove; 1-tooling body, 2-sleeve structure, 3-projection, 4-wrench operation hole, 5-T-type wrench, 6-depressed area.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example.

Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiment of the utility model are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, in the present application, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, the terms "connection" and "fixation" should be understood in a broad sense, for example, "fixation" can be a fixed connection, a detachable connection, or an integration; It may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be an internal communication between two elements or an interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In addition, the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered as the technical solution. Combination does not exist, nor is it within the scope of protection required by the utility model.

Example 1

As shown in Fig. 2 to Fig. 4, this embodiment relates to a disassembly and assembly tooling for the lower guide rod nut of the pantograph of the EMU, which is used to solve the problem of disassembly and assembly of the ring-shaped fixing nut connected between the lower guide rod and the lower arm.

The assembly and disassembly tooling for the guide rod nut under the pantograph of the EMU includes a main body 1 of the tooling.

A sleeve structure 2 is arranged inside one end of the tool body 1 .

The sleeve structure 2 is circular, and its size is adapted to the ring fixing nut 101 . Adapted here, it is advisable that the sleeve structure 2 can be sleeved on the ring fixing nut 101 .

On the inner wall of the sleeve structure 2 there is provided a protrusion 3 matching the outer circumferential groove 102 of the ring fixing nut 101 . Wherein, the number of bumps 3 is equal to the number of grooves 102 .

Each protrusion is evenly arranged on the inner wall of the sleeve structure 2 .

Since there are four grooves 102 , as shown in FIG. 1 , there are also four protrusions 3 . In addition, since each groove 102 is rectangular.

Therefore, the shape of the bump 3 in this embodiment can also be set as a rectangle.

In addition, a recessed area, such as the recessed area 6 in FIG.

Each bump 3 can be inserted into the corresponding groove 102 more smoothly through the recessed area 6 . In this embodiment, the recessed area 6 is preferably an arc-shaped recessed area.

As shown in FIG. 4 , a wrench operation hole 4 is provided on the inner side of the other end of the frock body 1 .

Wherein, the end side where the sleeve structure 2 is located and the end side where the wrench operation hole 4 is located refer to a group of opposite end sides on the tool body 1 , such as the left and right sides in FIG. 3 .

As shown in Figure 4, the wrench operating hole 4 is an inner four-corner operating hole.

In addition, the assembly and disassembly tooling for the guide rod nut under the pantograph of the EMU also includes a T-type wrench 5, as shown in Fig. 5 . The shape and size of the force application end of the T-shaped wrench are compatible with the shape and size of the wrench operating hole 4 .

The T-shaped wrench 5 cooperates with the wrench operation hole 4 in a pluggable connection manner. Specifically, the force application end of the T-type wrench 5 refers to the end of the T-type wrench inserted into the wrench operation hole 4 .

Similarly, in this embodiment, the force application end of the T-shaped wrench 5 is quadrangular.

By inserting the force-applying end of the T-shaped wrench 5 into the wrench operating hole 4 and cooperating with the wrench operating hole 4, it is convenient to apply force to the tooling main body 1, thereby facilitating the quick disassembly or installation of the tooling main body 1 to the ring fixing nut 101, which greatly improves Replacement or correction efficiency of the lower guide rod.

Of course, the T-wrench 5 can also be replaced by a ratchet wrench. It should be noted that the T-type wrench 5 or the ratchet wrench are all mature wrenches, and are only used to assist the tooling main body 1 in this embodiment.

Of course, the present embodiment is not limited to the force applying wrenches of the above two structural forms, and other easily conceivable force applying wrenches with the same or similar functions as the above-mentioned T-shaped wrench 5/ratchet wrench all fall into the scope of the present utility model. The scope of protection should be protected by the utility model.

In this embodiment, the main body 1 of the tooling, the sleeve structure 2, the bump 3 and the wrench operating hole 4 are integrally formed, which is beneficial to improving the overall structural strength of the tooling for disassembling and assembling the guide rod nut under the pantograph of the EMU.

The general working process of disassembling and assembling tooling for the guide rod nut under the pantograph of the EMU in the utility model is as follows:

When it is necessary to disassemble the ring fixing nut 101, the process is as follows:

First align the sleeve structure 2 with the ring fixing nut 101 , insert the protrusion 3 into the corresponding groove 102 , and lock the other end of the wrench operation hole 4 with a T-shaped wrench 5 . The hand acts on the T-shaped wrench 5 , and the ring-shaped fixing nut 101 can be easily disassembled by turning the ring-shaped fixing nut 101 .

The process of installing the ring fixing nut 101 is basically the same as the above-mentioned dismounting process, and will not be repeated here.

The CRH380B(L) type motor train set pantograph lower guide rod nut disassembly and assembly tooling of the utility model can quickly and accurately realize the disassembly and assembly of the ring-shaped fixing nut connected between the lower guide rod and the lower arm, which greatly satisfies the needs of the motor train. It meets the needs of group inspection and maintenance operations, avoids delays in troubleshooting, and improves the efficiency of EMU inspection and maintenance.

In addition, the utility model CRH380B (L) EMU pantograph lower guide rod nut disassembly tooling also has the advantages of simple structure, convenient operation, etc., and effectively avoids damage to other equipment during the disassembly operation, saving Maintenance manpower is paid.

Example 2

This embodiment 2 also refers to a tool for disassembling and assembling the nut of the guide rod under the pantograph of the EMU. Except for the following technical features that are different from the above-mentioned embodiment 1, other technical features of the tool can be referred to in the embodiment 1.

As shown in Figures 6 and 7, the wrench operating hole 4 in this embodiment is an inner hexagonal operating hole. Similarly, the force application end of the T-shaped wrench 5 is hexagonal, so as to be used in conjunction with the above-mentioned wrench operation hole 4 .

Of course, the above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. Under the utility model concept of the utility model, the equivalent structures made by using the specification of the utility model and the contents of the accompanying drawings Transformation, or direct/indirect use in other relevant technical fields are all included in the patent protection scope of the present utility model, and should be protected by the utility model.

Claims (6)

1. A tool for disassembling and assembling nuts of a lower guide rod of a pantograph of a motor train unit is characterized in that,

comprises a tool main body;

the sleeve structure is arranged on the inner side of one end of the tool main body, is round and is suitable for an annular fixing nut connected between the lower guide rod and the lower arm; the inner wall of the sleeve structure is provided with a convex block which is matched with the groove on the outer circumference of the annular fixing nut;

the spanner operation hole is arranged at the inner side of the other end of the tool main body;

the shape and the size of the force application end of the force application spanner are matched with those of the spanner operation hole, and the force application spanner can be matched with the spanner operation hole in a plug-in mode;

the tool main body end side where the sleeve structure is located and the tool main body end side where the wrench operation hole is located specifically refer to a group of opposite end sides on the tool main body.

2. The tool for disassembling and assembling the lower guide rod nut of the pantograph of the motor train unit according to claim 1, is characterized in that,

the number of the convex blocks is equal to that of the grooves;

the convex blocks are uniformly distributed on the inner wall of the sleeve structure.

3. The tool for disassembling and assembling the lower guide rod nut of the pantograph of the motor train unit according to claim 2, is characterized in that,

the number of the convex blocks and the number of the concave grooves are four.

4. The tool for disassembling and assembling the lower guide rod nut of the pantograph of the motor train unit according to claim 1, is characterized in that,

the tool body, the sleeve structure, the protruding block and the spanner operation hole are integrally formed.

5. The tool for disassembling and assembling the lower guide rod nut of the pantograph of the motor train unit according to claim 1, is characterized in that,

the spanner operation hole is an inner four-corner operation hole or an inner hexagonal operation hole.

6. The tool for disassembling and assembling the lower guide rod nut of the pantograph of the motor train unit according to claim 5, wherein,

the force application spanner adopts a T-shaped spanner; wherein:

the shape and the size of the force application end of the T-shaped spanner are matched with the shape and the size of the spanner operation hole.