KR100933496B1 - Brush holder for shaft earthing device of ship - Google Patents

Abstract

PURPOSE: A brush holder for the shaft ground of a ship is provided to prevent the change of the elastic supporting force in spite of the long term use by using a leaf spring. CONSTITUTION: A brush holder(100) for the shaft ground of a ship comprises a leaf spring(140), an internal fixation shaft(150), a clamper(130), and a clamper position maintenance unit. The leaf spring is formed between a pair of clamper support legs(120). The internal fixation shaft fixes the inner end of the leaf spring and is coupled on the clamper support leg. The clamper comprises a rotary body plate(131) and a rotary leg plate. The clamper position maintenance unit maintains that the clamper is apart from the brush fixture.

Description

BRUSH HOLDER FOR SHAFT EARTHING DEVICE OF SHIP}

The present invention relates to a brush holder constituting a grounding device for grounding the shaft of the ship.

 When the propeller rotates through the ship's main engine (main engine), a very low constant current is generated, and this constant current causes a potential difference between the propeller and propeller shaft and the hull, causing the propeller and propeller shaft to corrode. .

In particular, the propeller and propeller shafts are made of a metal different from the hull, thereby providing a cause of corrosion depending on the ionization tendency of the dissimilar metals.

In order to solve this problem, a grounding device is used to ground the shaft of the ship with the hull.

The ship's shaft grounding device is largely a slip ring, a brush, a brush holder, a support bar, a millivolt meter and a shaft earth cable. And the like.

Slip ring is a ring surrounding the shaft so that the brush can be connected to the shaft when the shaft rotates, it is generally used as a highly conductive material. Applicant manufactures the slip ring with silver of 95% purity or higher.

The brush (brush) is mounted to the brush mounting hole of the brush holder (brush holder) is in contact with the slip ring (slip ring) serves to electrically connect with the shaft.

The brush holder (brush holder) is provided with a brush mounting tool is mounted to the brush, and also to elastically support the brush mounted on the brush mounting tool.

In general, there are a single type of brush holder in which a single brush mounting tool is formed and a double type in which two brush mounting tools are formed.

A support bar is a fixing rod that is welded to the hull to secure the brush holder.

The millivolt meter (mV meter) is a panel that displays millivolts generated in the shaft and measures the electrical connection state of the shaft.

The shaft earth cable connects the hull and the brush to send millivolts of electricity generated from the shaft to the hull through the brush.

In the shaft grounding device of the ship having the structure as described above, the brush holder is provided with a pusher for elastically supporting the brush mounted on the brush mounting hole.

In addition, the presser is rotatably prepared on the presser support leg formed in the brush holder, and a tension spring in the form of a coil is mounted between the presser and the brush holder to secure the elastic support force of the presser.

Thus, when securing the elastic support of the pressing using the tension spring has the following problems.

1) Both ends of the tension spring should be fixed to each presser and brush holder, and in order to fix the tension spring with steel wire shape, bend the end of the steel wire to make a ring shape and hang this loop to each of the pusher or brush holder. .

However, these annular ends are easily deformed during prolonged use of the vessel and there is a risk of departing from the presses or brush holders.

2) It is desirable that the elastic bearing capacity of the clamp does not change for a long time, considering that the ship's shaft grounding device is used for a long time. However, in the case of the tension spring there is a problem that the elastic force is easily weakened when used for a long time.

Due to the problems 1) and 2), the maintenance problem of the brush holder due to the tension spring is relatively frequent.

3) In addition, in order to replace the brush mounted in the brush holder of the brush holder, the presser should be able to be spaced apart from the brush mount, and it is desirable that the presser can be kept spaced apart from the brush mount for a while. Do.

However, in the case of the tension spring, only the linear elastic force can be exerted. Therefore, it is possible to maintain the spaced apart state of the presser by rotating the presser to the extent that the linear elastic force does not rotate the presser. Therefore, the brush holder using the tension spring requires excessive rotation of the pusher.

4) The elastic bearing capacity of the clamps needs to be properly adjusted according to the demands and needs of the ship users. In the case of tension springs, this tension can be met by adjusting the tensioned length.However, even with very small changes in tension length, the elastic force changes greatly (that is, because springs with very high elastic modulus must be used). It is not easy to display elastic bearing force. Therefore, in the case of the tension spring, the elastic support force can only be adjusted depending on the user's sense without the reference scale when adjusting the elastic support force of the user.

The present invention has been made to solve the problems of the prior art as described above, it is possible to maintain the state that the leaf spring is mounted on the presser and the support leg for a long time, and in addition to long-term use by using the leaf spring There is almost no change in the elastic bearing force, and the pivoting movement of the pusher required for the brush replacement operation is extremely simple, and the use of the leaf spring provides a brush holder for shaft grounding of the vessel that can easily adjust the necessary elastic bearing force. I would like to.

In order to solve the above problems, the present invention is provided with a brush mounting tool is mounted to the brush for grounding the shaft of the ship, as long as the pusher for elastically supporting the brush mounted on the brush mounting tool is arranged in parallel A brush holder for shaft grounding of a ship rotatably provided on a pair of press support legs, comprising: a plate spring provided between the pair of press support legs, the steel plate wound in a concentric shape; An inner fixed shaft coupled to the press support legs while fixing an inner end of the leaf spring; A rotating body plate having one end elastically supported by an outer end of the leaf spring, and the other end being a brush pressing part elastically supporting the brush, and being bent vertically from both sides of the rotating body plate and fixed to the inner fixed shaft. A pusher including a pivoting bridge plate formed with a penetrating shaft through hole; Pressing posture holding means provided for maintaining or releasing the spaced state of the presser from the brush fitting; Characterized in that comprises a.

In the above: the shaft through hole is in the form of a long hole so that the pivoting leg can move along the internal fixed shaft; The pressing posture holding means is provided on the outer side of any one of the pressing support legs of the pair of pressing support legs, the auxiliary plate formed with a first locking piece protruding toward the pivoting plate, and the first locking piece is A first catching jaw formed at an edge of the pivoting leg plate so as to be caught; This is preferred.

In the above, the inner fixed shaft is rotatably coupled to the pressing support leg, the auxiliary plate formed with a plurality of engaging grooves at the edge around the inner fixing shaft is one of the pair of pressing clamp support legs The elastic adjustment plate is fixed to the outside of the support legs, the elastic adjusting plate provided with a second locking piece that is fixed to the locking groove of any one of the plurality of locking grooves is fixed to the internal fixed shaft to maintain the internal fixed shaft fixed state It is preferable.

As described above, the present invention can maintain the state in which the leaf spring is mounted on the presser and the press support leg for a long time, and by using the leaf spring, there is almost no change in the elastic bearing force even for long-term use. The pivoting operation of the pusher required during the replacement operation is extremely simple, and the use of the leaf spring provides a brush holder for shaft grounding of the ship which is easy to adjust the necessary elastic support force.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted for simplicity of explanation, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

1 is a perspective view of a double type brush holder according to an embodiment of the present invention, FIG. 2 is a partially separated perspective view of FIG. 1, FIG. 3 is a front view of FIG. 1, and FIG. 4 is a front view of FIG. 1 in another state. Figure 5 is a schematic view of the state of use of Figure 1, Figure 6 is a view for showing the rotation range of the pusher in Figure 1, Figure 7 is a process of separating the presser from the brush mounting holes for replacement of the brush in Figure 1 FIG. 8 is a view sequentially illustrating a process in which the pusher is rotated to elastically support the brush after the replacement of the brush is completed.

The main structure of the brush holder 100 which concerns on this invention is demonstrated.

The brush holder 100 is provided with a brush mounting hole 110 to which the brush 10 is mounted, and elastically supports the brush 10 mounted to the brush mounting hole 110 for each brush mounting hole 110. The presser support leg 120 in which the presser 130 is rotatably provided is provided. The pressing support legs 120 are provided in pairs to face each other and are arranged in parallel.

Each push pin support leg 120 is formed with a shaft through-hole (121).

The leaf spring 140 is provided between the pair of press support legs 120.

The leaf spring 140 is a steel sheet wound in a concentric circle shape.

The inner end 141 of the leaf spring 140 is bent to pass through the center of the concentric circle to facilitate the fixing to the inner fixed shaft 150.

The outer end 142 of the leaf spring 140 is bent radially outward to easily support the depress 130.

The inner fixed shaft 150 has a cylindrical shape, and is formed with a leaf spring fixing groove 151 having one end of which is a closed end and the other end of which is an open end, and the leaf spring fixing groove of the leaf spring fixing groove 151. An elastic control plate fixing groove 152 having a gap greater than the gap of 151 is formed.

In addition, a pin insertion hole 153 is formed at a portion where the elastic control plate fixing groove 152 of the internal fixed shaft 150 is formed to be orthogonal to the axial direction of the internal fixed shaft 150.

The pusher 130 includes a rotation body plate 131 and a pair of rotation leg plates 132 that are vertically bent from both sides of the rotation body plate 131.

Rotating body plate 131 has one end portion formed in a shape corresponding to the outer end 142 of the leaf spring 140, the leaf spring supporting portion 131a which is elastically supported on the outer end 142 of the leaf spring 140 The other end forms the brush pressing portion 131b for elastically supporting the brush 10.

Each of the rotating leg plates 132 is provided with a shaft through hole 132a through which the internal fixed shaft 150 penetrates.

The shaft through hole 132a does not form a perfect circle, but is a form of a long hole in which the pivoting leg 132 may move along the internal fixed shaft 150.

In addition, the rotation leg plate 132 has a first locking jaw 132c radially inwardly formed at one end of the arc-shaped guide part 132b with an arc-shaped guide part 132b formed at an edge thereof. At the other end of the arc-shaped guide portion 132b, a second catching jaw 132d is formed radially outwardly.

Auxiliary plate 160 is fixed to the outer surface of any one of the pair of pressing support legs 120 by a rivet or the like.

The auxiliary plate 160 has a shaft through-hole 161 formed in the center thereof, and at the edge thereof, a plurality of locking grooves 162 are formed around the shaft through-hole 161. In addition, the first catching piece 163 protruding toward the pivoting leg 132 is formed at one side of the auxiliary plate 160.

The elastic adjusting plate 170 has a pair of shaft slots 171 through which one end of the internal fixed shaft 150 penetrates in a central portion thereof, so that the shaft fixing bar 172 is disposed between the pair of shaft slots 171. Is formed.

In addition, on one side of the elastic control plate 170, the second locking piece 173 is formed to protrude toward the auxiliary plate 160.

The auxiliary washer 180 is formed with a shaft through-hole 181 in the center.

The fixing pin 190 is inserted into the pin insertion hole 153 to prevent the separation of the auxiliary washer 180 and the like.

The assembling state of the brush holder 100 will be described.

Auxiliary plate 160 is fixed to the outer surface of any one of the pressing support legs 120 of the pressing support legs (120).

With the leaf spring 140 positioned between the pivoting legs 132 of the clamp 130, the clamp 130 and the leaf spring 140 are positioned between the pair of clamp support legs 120 Let's do it.

In this state, the inner fixing shaft 150 is inserted into the shaft through-hole 121 of the pusher support leg 120 to which the auxiliary plate 160 is not fixed so that the elastic adjusting plate fixing groove 152 of the inner fixing shaft 150 is The formed portion is configured to protrude from the shaft through hole 121 of the pressing support leg 120 to which the auxiliary plate 160 is fixed and the shaft through hole 161 of the auxiliary plate 160.

In addition, in this process, the inner end 141 of the leaf spring 140 is inserted into and fixed to the leaf spring fixing groove 151 of the inner fixed shaft 150.

Therefore, there is no risk that the leaf spring 140 is separated from the internal fixed shaft 150.

In this state, the internal fixed shaft 150 is rotatable to the pusher support leg 120.

After being assembled in this state, the shaft fixing bar 172 of the elastic control plate 170 is inserted into the elastic control plate fixing groove 152 of the internal fixing shaft 150. At this time, the end of the internal fixed shaft 150 is protruded through the insertion of the shaft slot 171 of the elastic control plate 170.

In addition, the second locking piece 173 of the elastic control plate 170 to be caught in any one of the locking groove 162 of the plurality of locking grooves 162 of the auxiliary plate 160.

In this case, the elastic force of the leaf spring 140 may be adjusted according to the position of the locking groove 162 in which the second locking piece 173 of the elastic control plate 170 is caught. Therefore, the user can easily adjust the elastic force of the leaf spring 140, which can be easily visually confirmed. That is, the second locking piece 173 of the elastic control plate 170 allows the control of the elastic force to be visually easily recognized.

Therefore, the elastic control plate 170 is coupled to the auxiliary plate 160 fixed to the pressing support leg 120, and as a result, the rotation of the internal fixed shaft 150 coupled to the elastic control plate 170 is prohibited.

In addition, after the auxiliary washer 180 is coupled to the end of the internal fixed shaft 150 protruding into the shaft slot 171 of the elastic control plate 170 in this state, the fixing pin 190 is a pin of the internal fixed shaft 150. The insertion hole 153 is inserted and fixed to prevent components from being separated.

3 illustrates a state in which the brush pressing part 131b of the clamp 130 is located in the brush mounting hole 110 in a state in which the brush 10 is not mounted in the brush mounting hole 110.

FIG. 4 illustrates a state in which the pusher 130 is rotated for the replacement of the brush 10 and the rotated state is maintained.

FIG. 5 illustrates a state in which the brush 10 is mounted and elastically supported by the pusher 130 in the present embodiment. A cross section of the slip ring 20 and the support bar 30 is briefly shown.

FIG. 6A is a state diagram of the main operation parts corresponding to FIG. 3, and FIG. 6B is a state diagram of the main operation parts corresponding to FIG. 4.

As shown in (a) of FIG. 6, the pusher 130 has a second catching jaw 132d engaged with the first catching piece 163 of the subsidiary plate 160, so that rotation in the clockwise direction is no longer possible. It is a state and can maintain this state unless there is a special external force.

As shown in FIG. 6 (b), the pusher 130 is in a state where the first catching jaw 132c is caught by the first catching piece 163 of the auxiliary plate 160, so that rotation in the clockwise direction is no longer possible. It is a state and can maintain this state unless there is a special external force.

FIG. 7 illustrates a process of changing from the state (a) of FIG. 6 to the state (b) of FIG. 6.

As shown in (b) to (e) of FIG. 7, when the user presses the leaf spring support 131a of the pusher 130 in the direction of the arrow, the shaft through hole 132a has a shape of a long hole. , The pusher 130 tries to move in the direction of the arrow along the internal fixed shaft 150. However, in FIGS. 7B to 7D, the arc-shaped guide part 132b interferes with the first locking piece 163, thereby limiting the movement range of the pusher 130.

However, when the portion without the arc-shaped guide portion 132b appears as shown in FIG. 7E, the pusher 130 moves to the right along the inner fixing shaft 150.

When the external force is removed in the state of FIG. 7E, as shown in FIG. 7F, the first locking jaw 132c is engaged with the first locking piece 163 to maintain the posture of the press 130.

FIG. 8 illustrates a process of changing from the state (b) of FIG. 6 to the state (a) of FIG. 6.

In the state (a) of FIG. 8, when an external force is applied as shown in (b), that is, when the user lifts up the brush presser 131b of the pusher 130 in the direction of the arrow, the pusher 130 may have an internal fixed shaft ( 150) to the left.

In this state, if the force applied to the brush pressing portion 131b of the clamp 130 is removed, the clamp 130 is rotated in a clockwise direction by the elastic force of the leaf spring 140, and the clamp 130 Rotation of) is until the second catching jaw 132d meets the first catching piece 163 as shown in FIG. 8E, or the brush pressing portion 131b of the catch 130 meets the brush 10. Until it continues.

The auxiliary plate 160, which is provided on the pusher support leg 120 and protrudes toward the pivoting leg 132, is formed, and the jaw radially inwards to the pivoting leg 132. By the formed first catching jaw 132c, the pusher 130 functions as a pusher posture maintaining means provided to maintain the state spaced apart from the brush mounting hole 110 or to release the spaced state. .

9 is a diagram illustrating a use state of a single type brush holder having one brush mounting hole 110 according to another embodiment of the present invention.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

The invention can be used as an accessory of a grounding device for grounding a shaft of a ship.

1 is a perspective view of a double type brush holder according to an embodiment of the present invention;

2 is a partially separated perspective view of FIG. 1;

3 is a front view of FIG. 1,

4 is a front view of FIG. 1 in another state;

5 is a schematic view of the use state of FIG. 1;

Figure 6 is a view for showing the rotation range of the pusher in Figure 1,

FIG. 7 is a view sequentially illustrating a process of separating the presser from the brush mounting hole in order to replace the brush in FIG. 1;

8 is a view sequentially illustrating a process in which the pusher is rotated to elastically support the brush after the replacement of the brush is completed;

9 is a view of another embodiment corresponding to FIG. 5;

<Description of Symbols for Main Parts of Drawings>

10 brush 20 slip ring

100: brush holder 110: brush mounting holes

120: pressing support leg 130: pressing

140: leaf spring 150: internal fixed shaft

160: auxiliary plate 170: elastic control plate

Claims (3)

A brush mounting tool is formed to mount a brush for grounding the shaft of the ship, and is provided to be rotatable on a pair of pusher support legs in which a pusher for elastically supporting the brush mounted on the brush mounting tool is disposed in parallel. In brush holder for shaft grounding of a ship A plate spring provided between the pair of presser support legs and the steel plate wound in a concentric circle shape; An inner fixed shaft coupled to the press support legs while fixing an inner end of the leaf spring; A rotating body plate having one end elastically supported by an outer end of the leaf spring, and the other end being a brush pressing part elastically supporting the brush, and being bent vertically from both sides of the rotating body plate and fixed to the inner fixed shaft. A pusher including a pivoting bridge plate formed with a penetrating shaft through hole; Push posture holding means provided to maintain or release the press release from the brush mounting hole; Brush holder for shaft grounding of a ship, characterized in that comprises a. The method of claim 1 wherein: The shaft through hole is in the form of a long hole so that the pivoting leg can move along the internal fixed shaft; The pressing posture holding means is provided on the outer side of any one of the pressing support legs of the pair of pressing support legs, the auxiliary plate formed with a first locking piece protruding toward the pivoting plate, and the first locking piece is A first catching jaw formed at an edge of the pivoting leg plate so as to be caught; Brush holder for shaft grounding of a ship, characterized in that. The method of claim 1, The inner fixed shaft is rotatably coupled to the press support legs, An auxiliary plate having a plurality of engaging grooves formed at an edge around the inner fixed shaft is fixed to the outside of one of the pair of press support legs, The elastic control plate provided with a second locking piece that is fixed to the locking groove of any one of the plurality of locking grooves is fixed to the internal fixed shaft to maintain the internal fixed shaft fixed state Brush holder for shaft grounding of a ship, characterized in that.

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