A method of replacing a carbon brush spring

Abstract

The application relates to the technical field of carbon brushes and discloses a replacement method of carbon brush springs, which comprises the following steps: detaching a carbon brush holder from a generator; grinding off one end of a rivet for fixing a carbon brush spring on the carbon brush holder and ejecting the rivet with the ground-off end; replacing and installing a new carbon brush spring to the carbon brush holder; placing a base of a support frame on a fixed surface, inserting a new rivet into the new carbon brush spring, and making a top surface of a supporting rod of the support frame abut against a rivet head of the new rivet; wherein the support frame comprises the base and the supporting rod which is vertically arranged on the base; the other end of the rivet is beaten into a circular-arc type locking rivet through a groove at the bottom of a first punch pin, and the circular-arc type locking rivet is beaten flat through a bottom surface of a second punch pin, so that the top surface of the circular-arc type locking rivet is not protruded from the surface of the carbon brush spring; and the carbon brush holder is reinstalled to the generator; the application can replace the carbon brush spring on site quickly, has low maintenance cost, consumes short time, and does not affect the normal operation of the generator.

Description

Technical Field

[0001] This invention relates to the field of carbon brush technology, and in particular to a method for replacing carbon brush springs. Background Technology

[0002] When the carbon brush spring of a generator breaks, the entire carbon brush holder needs to be replaced. However, the new carbon brush holder from the generator manufacturer may have different dimensions, making it impossible to install. Moreover, the manufacturer cannot provide on-site repair services for the old carbon brush holder. It can only be sent back to the generator manufacturer for spring installation at the factory. This repair is costly, time-consuming, and affects the normal operation of the generator. Summary of the Invention

[0003] The purpose of this invention is to provide a method for replacing carbon brush springs, enabling quick on-site replacement of carbon brush springs with simple tools, easy and fast operation, low maintenance cost, short time consumption, and no impact on the normal operation of the generator.

[0004] To achieve the above objectives, the present invention provides a method for replacing carbon brush springs, comprising the following steps:

[0005] Step 1: Remove the carbon brush holder from the generator;

[0006] Step 2: Grind off one end of the rivet used to fix the carbon brush spring on the carbon brush holder, and use a firing pin or screwdriver to push out the rivet with the ground-off end;

[0007] Step 3: Remove the broken carbon brush spring from the carbon brush holder and install the new carbon brush spring onto the carbon brush holder.

[0008] Step 4: Place the base of the support frame on the fixed surface, insert the new rivet into the new carbon brush spring, and press the top surface of the support rod of the support frame against the rivet head of the new rivet; wherein, the support frame includes a base and a support rod vertically arranged on the base;

[0009] Step 5: Use the groove at the bottom of the first firing pin to make the other end of the rivet in step 4 into an arc-shaped locking rivet, and then use the bottom surface of the second firing pin to flatten the arc-shaped locking rivet so that the top surface of the arc-shaped locking rivet does not protrude from the surface of the carbon brush spring.

[0010] Step 6: Reinstall the carbon brush holder onto the generator.

[0011] As a preferred embodiment of the present invention, the rivet in step 4 is a semi-circular head rivet, and the top surface of the support rod is provided with a support groove that matches the shape of the rivet head of the semi-circular head rivet.

[0012] As a preferred embodiment of the present invention, the groove at the bottom of the first firing pin is an arc-shaped groove.

[0013] As a preferred embodiment of the present invention, in step 2, one end of the rivet is ground off using a grinding wheel or a file.

[0014] In a preferred embodiment of the present invention, the bottom of the support rod is threadedly connected to the base.

[0015] As a preferred embodiment of the present invention, the diameter of the bottom of the first striking pin is smaller than the diameter of the rivet mounting hole of the carbon brush spring.

[0016] Compared with the prior art, the method for replacing carbon brush springs according to an embodiment of the present invention has the following advantages:

[0017] The embodiments of the present invention enable quick replacement of carbon brush springs on site. The tools are simple, the operation is simple and quick, the maintenance cost is low, the time consumption is short, and it does not affect the normal operation of the generator. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] Figure 1 This is a schematic diagram of the carbon brush holder provided by the present invention;

[0020] Figure 2 This is a schematic diagram of the support frame provided by the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the first firing pin provided by the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the second firing pin provided by the present invention;

[0023] Figure 5 This is a cross-sectional view of the support frame of the present invention supporting the carbon brush holder.

[0024] In the diagram, 1 is the carbon brush holder; 2 is the carbon brush spring; 3 is the rivet; 4 is the support frame; 41 is the base; 42 is the support rod; 43 is the support groove; 5 is the first striker; 51 is the groove; and 6 is the second striker. Detailed Implementation

[0025] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0026] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. It should be understood that the terms "first," "second," etc., are used in this invention to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this invention, "first" information can also be referred to as "second" information, and similarly, "second" information can also be referred to as "first" information.

[0027] like Figures 1 to 5 As shown, a preferred embodiment of the present invention provides a method for replacing a carbon brush spring, comprising the following steps:

[0028] Step 1: Remove the carbon brush holder 1 from the generator. When removing the brush handle, record and measure the height between the handle and the brush holder.

[0029] Step 2: Grind off one end of the rivet 3 on the carbon brush holder 1 that is used to fix the carbon brush spring 2. Specifically, use a grinder or file to grind off one end of the rivet 3, and use a striker or screwdriver to push out the rivet 3 with one end ground off. The diameter of the striker should be the same as the diameter of the screwdriver.

[0030] Step 3: Remove the broken carbon brush spring 2 from the carbon brush holder 1 and install the new carbon brush spring 2 onto the carbon brush holder 1.

[0031] Step 4: Place the base 41 of the support frame 4 on a fixed surface, which can be the ground. Insert the new rivet 3 into the new carbon brush spring 2. Press the carbon brush holder 1 onto the support rod 42 of the support frame 4 by hand, and press the top surface of the support rod 42 of the support frame 4 against the head of the new rivet 3. The support frame 4 facilitates the positioning and fixing of the new rivet 3 inserted into the carbon brush spring 2, preventing the rivet 3 from shaking and affecting the riveting and fixing effect of the rivet 3 on the carbon brush spring 2 and the carbon brush holder 1. The support frame 4 includes a base 41 and a support rod 42 vertically arranged on the base 41.

[0032] Step 5: Using the groove 51 at the bottom of the first striker 5, the other end of the rivet 3 in step 4 is rounded and locked. Then, the bottom surface of the second striker 6 is used to flatten the rounded locking rivet 3 so that the top surface of the rounded locking rivet 3 does not protrude from the surface of the carbon brush spring 2. Flattening the rivet 3 will not hinder the installation of the brush handle. After installing the rivet 3, check that the carbon brush spring 2 is not loose and measure that the spring pressure is within the qualified range. Install the brush handle according to the original record and adjust the height to be consistent before putting it into use on site.

[0033] Step 6: Reinstall the carbon brush holder 1 onto the generator.

[0034] For example, the rivet 3 in step 4 is a semi-circular head copper rivet 3. The specifications and dimensions of the semi-circular head copper rivet 3 can be selected according to the brush holder thickness of the carbon brush holder 1 on site. In this embodiment, the semi-circular head copper rivet 3 is an M3*16 semi-circular head copper rivet 3. The top surface of the support rod 42 is provided with a support groove 43 that matches the shape of the rivet head 3 of the semi-circular head rivet 3. The support groove 43 is an arc groove with a diameter of 6mm and a depth of 1mm.

[0035] For example, the groove 51 at the bottom of the first firing pin 5 is an arc-shaped groove. The first firing pin 5 is made of a high-strength material, and the arc-shaped groove has a diameter of 5 mm and a depth of 1 mm.

[0036] For example, the bottom of the support rod 42 is threadedly connected to the base 41, which facilitates the replacement of the support rod 42 or the base 41 and the maintenance and replacement of parts. In this embodiment, a nut is fixed on the base 41, and a threaded section is provided at the bottom of the support rod 42. The threaded section of the support rod 42 is threadedly connected to the nut.

[0037] For example, the diameter of the bottom of the first striking pin 5 is smaller than the diameter of the mounting hole of the rivet 3 of the carbon brush spring 2, so that the other end of the rivet 3 can be rounded to lock the rivet 3.

[0038] In summary, the embodiments of the present invention enable quick replacement of carbon brush springs 2 on-site, with simple tools, easy and quick operation, low maintenance cost, short time consumption, and no impact on the normal operation of the generator.

[0039] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A method for replacing carbon brush springs, characterized in that, Includes the following steps: Step 1: Remove the carbon brush holder from the generator; Step 2: Grind off one end of the rivet used to fix the carbon brush spring on the carbon brush holder, and use the first firing pin or a screwdriver to push out the rivet with the ground-off end; Step 3: Remove the broken carbon brush spring from the carbon brush holder and install the new carbon brush spring onto the carbon brush holder. Step 4: Place the base of the support frame on the fixed surface, insert the new rivet into the new carbon brush spring, and press the top surface of the support rod of the support frame against the rivet head of the new rivet; wherein, the support frame includes a base and a support rod vertically arranged on the base; Step 5: Use the groove at the bottom of the first firing pin to make the other end of the rivet in step 4 into an arc-shaped locking rivet, and then use the bottom surface of the second firing pin to flatten the arc-shaped locking rivet so that the top surface of the arc-shaped locking rivet does not protrude from the surface of the carbon brush spring. Step 6: Reinstall the carbon brush holder onto the generator.

2. The method for replacing carbon brush springs as described in claim 1, characterized in that, The rivet in step 4 is a semi-circular head rivet, and the top surface of the support rod is provided with a support groove that matches the shape of the rivet head of the semi-circular head rivet.

3. The method for replacing carbon brush springs as described in claim 1, characterized in that, The groove at the bottom of the first firing pin is an arc-shaped groove.

4. The method for replacing carbon brush springs as described in claim 1, characterized in that, In step 2, one end of the rivet is ground off using a grinder or file.

5. The method for replacing carbon brush springs as described in claim 1, characterized in that, The bottom of the support rod is threadedly connected to the base.

6. The method for replacing carbon brush springs as described in claim 1, characterized in that, The diameter of the bottom of the first firing pin is smaller than the diameter of the rivet mounting hole of the carbon brush spring.

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