KR102314429B1 - The tool for the shelfish picking - Google Patents

Abstract

The present invention relates to a shellfish harvesting tool comprising: a scratching module which is a 3D structure with a longer width than a height and includes a long scraper in a width direction at an edge; a net module which is manufactured by a structure which is fixed in a state of opening an entrance of a net having shellfish; a connecting unit which includes a connecting wire which is installed to connect the scratching module and the net module in a state of separating the scratching module and the net module; and a towing unit which includes a first towing wire in which one end is connected to the scratching module and the other end is connected to a fishing boat, and a second towing wire in which one end is connected to the net module and the other end is connected to the fishing boat. The present invention prevents a phenomenon of lifting the scratching module from mudflat by separately operating the scratching module affected by upward towing force of the fishing boat and the net module affected by a downward weight of the shellfish. Since the scraper is buried on the bottom of the mudflat to collect only the shellfish, the present invention can prevent phenomena of allowing a conventional sharp scraper to excessively dig the bottom of the mudflat with wedging action and accumulating massive mud in the net.

Description

The tool for the shelfish picking

The present invention relates to a mechanism for collecting shellfish, and more particularly, a scraper module manufactured in the shape of an approximately right-angled triangle in which the width of the lower side is wider than the width of the upper side, and the net module in which the inlet of the net containing the shellfish is fixed is connected By being spaced apart and connected to operate separately through a wire, the phenomenon of lifting the scraper module by the weight of the shellfish collected in the net is prevented, and the conventional pointed scraper is buried only deep enough to collect the shellfish from the bottom of the tidal flat. It relates to a shellfish collection device that prevents the destruction of the ecosystem by excessively digging the bottom of the tidal flat due to the wedge action, and at the same time allows selective collection of only shellfish larger than a desired size.

In general, there are various methods of collecting shellfish grown in tidal flats or shellfish farms. One of them is a method in which an operator collects shellfish in a state in which seawater is drained, and there is a method in which shellfish are collected using a shellfish collection machine developed separately for shellfish collection. In addition, there is a method of collecting shellfish at the bottom of the tidal flat by pulling a net on a fishing boat in the presence of seawater.

In the case of dragging a net using a conventional fishing boat, when a shellfish collection device connected to a moving fishing boat with a traction wire scratches the tidal flat under the sea, the shellfish are exposed on the tidal flat bottom, and the shellfish is fixed to hang down at the rear of the sled will be put in a net.

However, if the net contains a lot of shellfish and the weight increases, the front part of the sled acts upward by the traction wire connected to the fishing boat, and the rear part of the sled acts downward due to the weight of the shellfish. , there is a problem in that the front part of the sled is lifted and the action of scraping the tidal flat is disabled, making it difficult to collect shellfish.

In addition, the conventional scraper excessively digs the bottom of the tidal flat like a wedge to destroy the ecosystem, causes a lot of mud to accumulate in the net, and also has problems such as collecting small clams.

Republic of Korea Patent Registration No. 10-2110204 (Notice on May 13, 2020) Republic of Korea Patent Registration No. 10-0998132 (published on Dec. 02, 2010)

An object of the present invention devised to solve the above problems is a scraper module in which a plurality of bars and scrapers are made of a structure in a certain shape so as to scrape off the tidal flat, and a plurality of bars in a structure in which the inlet of the net is fixed. As the manufactured net module is installed at a certain distance in the rear of the scraper module via the connecting wire, the scraper module affected by the upward traction force of the fishing vessel and the net module affected by the lower self-weight of the shellfish operate separately to operate the scraper module. It is to provide an apparatus for collecting shellfish to prevent the phenomenon of floating from the tidal flat.

And another object of the present invention is to prevent excessive digging of the bottom of the tidal flat with a wedge action like a conventional scraper because the scraper is composed of a plurality of round bars arranged at regular intervals, so that only the seashells are collected on the bottom of the tidal flat. It is to provide an apparatus for collecting shellfish.

In order to achieve the above-mentioned object, the shellfish collection device according to the present invention is a three-dimensional structure having a width longer than a height, and a scraper module having a scraper 110 mounted on the lower side in the longitudinal direction; a net module made of a structure in which the inlet of the net containing shellfish is fixed in an open state; A connection means having a connecting wire installed to connect the scraper module and the net module in a state in which the scraper module and the net module are spaced apart; and a first traction wire having one end fastened to the scraper module and the other end connected to a fishing boat, and one end of the net It is fastened to the module and the other end is a traction means having a second traction wire connected to the fishing vessel; can be made including.

Here, the scraper module affected by the upward traction force from the fishing vessel by the first traction wire and the second traction wire, and the net module affected by the downward weight of shellfish contained in the rear net are separated from each other by the separation by the connecting wire can operate as

In addition, the traction means is an intermediate member for connecting the wire connected to the fishing boat and the first traction wire and the second traction wire, the length is adjusted in the longitudinal direction, and the other end of the first traction wire and the other end of the second traction wire are each a front part Or it may further include a spacer fixed to the rear portion.

When the length of the spacing adjusting member is adjusted, the spacing between the scraper module and the net module can be adjusted while the spacing of the first traction wire and the second traction wire is adjusted.

In addition, the connecting means may further include an elastic member having one end fixed to the net module and the other end fixed to the connecting wire, and a fixing member fixed to the other end of the elastic member so that the connecting wire passes.

Accordingly, the phenomenon in which the net module is laid back is prevented by the elastic member, and the phenomenon in which the net module is laid forward is prevented by the fixing member touching the scraper module.

In addition, the scraper module connects the front ends of the horizontal bars, vertical bars and inclined bars arranged at regular intervals with a plurality of horizontal bars, vertical bars and inclined bars arranged at regular intervals while being coupled in a right triangle on the sides on both sides, and one end of the first traction wire is fastened to both sides. It may further include a lower transverse bar 123 to which one traction ring is fixed, and an upper transverse bar 124 connecting the ends of the vertical bars at both ends.

At this time, the upper transverse bar is processed in a "∪" shape at the position where the second traction wire passes, and the second traction wire can be accommodated.

In addition, the scraper module may further include a height adjustment member that is fixed after the first traction ring is adjusted in the height direction.

In addition, the net module is a mesh bar installed in a rectangular shape on the front side, a number of mesh hooks mounted so that the entrance of the net is caught and fixed on the rear side of the mesh bar, and a "Y" shape while being fixed at the top and bottom of the front both sides of the scraper module side of the mesh bar It may further include a second traction ring to which the tip of the second traction wire branched in the form is fastened.

And the scraper may be formed by arranging a round bar, a wire, or a polygonal bar at regular intervals and obliquely up and down.

Here, the scraper module may be optionally further provided with a reinforcing plate fixed to the lower portion and fitted through the round bar.

As described above, according to the present invention, a scraper module in which a plurality of bars and scrapers are made of a structure of a certain shape so as to scrape off the tidal flat, and a net module in which a plurality of bars are made of a structure of a certain shape so that the entrance of the net is fixed. A phenomenon in which the scraper module, which is affected by the upward traction force of the fishing vessel, and the net module, which is affected by the downward self-weight of shellfish, operate separately by being installed at a certain distance in the rear of the scraper module through the connecting wire, and the scraper module is lifted from the tidal flat There is an effect that can be prevented.

In addition, by being installed so that the height adjustment of the first traction ring is possible in the height adjustment device, the traction point of the scraper module can be changed up and down, the depth of the sea or the downward force of shellfish contained in the net, the upper direction that the first traction wire pulls In consideration of power, etc., by raising or lowering the towing point of the scraper module towed by a fishing boat, the scraper module has the effect of stably scraping the bottom of the tidal flat.

In addition, since the elastic member and the fixing member are installed between the scraper module and the net module, there is an effect that the net module can be prevented from being laid back or lying forward.

And a plurality of round rods arranged at regular intervals are horizontally arranged to constitute a scraper, so that only shellfish are collected on the bottom of the tidal flat, and only shellfish of a certain size or larger can be collected. It has the effect of preventing excessive digging of the bottom of the site and the accumulation of a large amount of mud in the net.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention, so the present invention is limited only to the matters described in those drawings should not be construed as
1 is a perspective view schematically showing an apparatus for collecting shellfish according to a preferred embodiment of the present invention.
FIG. 2 is an enlarged perspective view of a portion shown in FIG. 1 .
Figure 3 is a front view showing a reinforcing plate for reinforcing the scraper shown in Figure 1.

Hereinafter, preferred embodiments will be described in detail so that those of ordinary skill in the art can easily practice the present invention with reference to the accompanying drawings. In addition, among the components mentioned in various embodiments, mutually similar components and related components in each embodiment may be replaced, replaced, or added. However, when it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the gist of the present invention in describing the operating principle of the preferred embodiment of the present invention in detail, the detailed description thereof will be omitted.

<configuration>

Hereinafter, an apparatus for collecting shellfish according to a preferred embodiment of the present invention will be described with reference to FIGS. 1 to 3 .

As shown in FIGS. 1 and 2, the shellfish collection device according to the first embodiment of the present invention includes a scraper module 100, a net module 200, a connection means 300 and a traction means 400. is done by

First, the scraper module 100 may be manufactured by mounting a scraper 110 for scraping the bottom of the tidal flat in a structure of a certain shape in which a plurality of bars are connected. The scraper module 100 has various shapes including a flat plate, a triangle or a square on the side, and may be manufactured to a length of about 3 to 10 m. The scraper module 100 includes a horizontal bar 120 , a vertical bar 121 , an inclined bar 122 , a lower horizontal bar 123 , an upper horizontal bar 124 , a scraper 110 , a first traction ring 130 and A height adjustment member 131 may be provided.

Here, the horizontal bar 120 , the vertical bar 121 , the inclined bar 122 , the lower transverse bar 123 and the upper transverse bar 124 may be fixed to each other while forming a substantially right triangle on the side surface. In more detail, the vertical bar 121 is fixed to one end of the horizontal bar 120 to make a substantially right triangle, and the inclined bar 122 is formed by connecting the front ends of the horizontal bar 120 and the vertical bar 121 . can be fixed. The manufactured substantially right-triangular frame is arranged at regular intervals, the lower transverse bar 123 is fixed by connecting the ends of the horizontal bars 121 located at both ends, and the ends of the vertical bars 121 at both ends are connected. The upper transverse bar 124 may be fixedly manufactured.

Here, the length of the horizontal bar 120 may be longer than that of the vertical bar 121 to form a low center of gravity. In addition, the scraper module 100 may further include one or more reinforcing bars 125 installed obliquely by connecting the upper transverse bar 124 and the inclined bar 122 to reinforce both sides.

And the upper transverse bar 124 may be manufactured to have an approximately "∪" shape in two places through which the second traction wire 420 passes in the longitudinal direction. The second traction wire 420 may be accommodated in this area. Therefore, when pulling the net module 200 from the fishing boat, if the second traction wire 420 is inclined upward, it can be entered and exited through the open upper surface of the "∪" shape. If, when the second traction wire 420 passes under the upper transverse bar 124, when pulling the net module from the fishing boat, the second traction wire 420 tilts upward and touches the upper transverse bar 124 and touches the scraper module. (100) can be lifted or overturned. This phenomenon can be prevented by allowing the second traction wire 420 to be received and entered in the "∪" shape portion.

In addition, as shown in FIGS. 1 and 2 , the scraper 110 is horizontal along the fastening edge portion of the vertical bar 121 and the horizontal bar 120 on both sides, and a plurality of them are positioned up and down to be inclined, and to have a predetermined interval therebetween. A plurality of round bars may be arranged. The round bar may be directly fixed to the horizontal bar 120 or the vertical bar 121 , and may be fixed through the reinforcing plate 111 . Here, the scraper 110 may be a wire, a polygonal rod in addition to the round rod. In addition, the interval of the round bar may be set to such a degree that only shellfish of a certain size can be collected.

The scraper 110 has a horizontal bar and is arranged at regular intervals, so that the shellfish can be scraped off by burying only the depth of the shellfish buried without excessively digging the tidal flat. Therefore, when the conventional pointed scraper digs the tidal flat approximately vertically, the phenomenon that the ecosystem is destroyed by digging the tidal flat excessively can be prevented. In addition, since only shellfish of a certain size or larger can be collected through the gap between the round peaks, the destruction of the ecosystem due to indiscriminate collection can be prevented.

In addition, the reinforcing plate 111 may be installed to maintain the rigidity of the scraper 110 disposed long, to maintain a gap, and to minimize damage. The reinforcing plate 111 may be manufactured in the shape of a plate having a plurality of fixing holes 112 spaced apart from each other while the round bar of the scraper 110 passes through, as shown in FIG. 3 . The reinforcing plate 111 may be fixed to the lower portion of the scraper module 100 , in detail, at a joint portion of the vertical bar 121 and the horizontal bar 122 . In addition, the round bar of the scraper 110 is mounted on the reinforcing plate 111 in a fitting form, and if any one of the round bars is damaged due to this, only the round bar can be replaced. And the interval (d) of the fixing hole 112 may be set in consideration of the interval of the round bar for scraping the tidal flat.

In addition, the first traction ring 130 may be fixed to the height adjustment member 131 fixed to both sides of the lower transverse bar (123). At this time, the traction ring 130 may be mounted to the height adjustment member 131 to enable height adjustment. One end of the first traction wire 410 may be fixed to the traction ring 130 .

In addition, the height adjustment member 131 is in the form of a plate in which the upper and lower slots are processed, and may be fixed to the front of both sides of the lower transverse bar 123 . One side of the first traction ring 130 is fitted and fixed in the slot of the height adjustment member 131, and the height may be adjusted and fixed along the slot. Due to this, in consideration of the depth of the sea or the downward force of the weight of shellfish contained in the net, the upward force traction by the first traction wire 410, etc. The module 100 can stably scrape the bottom of the tidal flat. As an example, if the height of the first traction wire 410 is low, the scraper 110 is more closely adhered to the bottom of the tidal flat and can be scraped off well.

On the other hand, the net module 200 is located at the rear of the scraper module 100, as in FIGS. 1 and 2, and can be fixed in a state in which the entrance of the net is opened. The net module 200 may include a net bar 210 , a net ring 220 , and a second traction ring 230 .

Here, the net bar 210 is larger than the rear width of the scraper module 100 and may be manufactured by combining a plurality of bars in a substantially rectangular shape on the front side. In addition, the net bar 210 may be manufactured by overlapping two front and back.

In addition, the net ring 220 is a member fixed in a state in which the entrance of the net is opened. To this end, the mesh 220 may be installed in four places at the rear edge opposite to the scraper module 100 .

And the second traction ring 230 is a member to which one end of the second traction wire 420 is fixed. The second traction ring 230 may be installed above and below both sides of the scraper module 100 side of the net bar 210 . And the second traction ring 230 may be installed a little inside from both ends to avoid interference with the connection wire 320 or the interference with the vertical bar 121 of the scraper module 100.

On the other hand, the connecting means 300 may be installed so that the net bar 210 maintains the standing while connecting the scraper module 100 and the net module 200 . To this end, the connecting means 300 may include an elastic member 310 , a connecting wire 320 and a fixing member 330 .

First, one end of the elastic member 310 may be fixed to both ends of the net bar 210 of the net module 200 , and the other end may be fixed to the connecting wire 320 . For example, the elastic member 310 may be a spring. Therefore, the gap between the scraper module 100 and the net module 200 by the elastic member 310 may be temporarily increased due to external factors such as the topography of the tidal flat or caught on stones, and then restored again. Here, the elastic member 310 and the connecting wire 320 may be installed vertically on the side.

In addition, one end of the connecting wire 320 may be fixed to the elastic member 310 , and the other end may be fixed to the vertical bar 121 of the scraper module 100 . At this time, the connection wire 320 can be protected from the outside to prevent unintentional cutting or damage by the fixing member 330 .

In addition, the fixing member 330 may be installed so that the connecting wire 320 passes while being fixed to the front end of the elastic member 310 . Therefore, the phenomenon in which the net bar 210 is laid backward is prevented by the elastic member 310, and the phenomenon in which the net bar 210 is laid forward is the fixing member 330 is the upper horizontal bar 124 or the vertical bar. It can be prevented while in contact with the (121) or the horizontal bar (120). Due to this, the net bar 210 is maintained in an erected state, so that shellfish can be introduced into the net.

And the connecting means 300 may further include an auxiliary net (not shown) installed between the connecting wire 320 is installed between the net module 200 and the scraper module 100 . This auxiliary net can guide the shellfish exposed by the scraper 110 to be contained in the rear net installed in the net module 200 .

On the other hand, the traction means 400 may be provided with a first traction wire 410, a second traction wire 420 and a gap adjusting member (430).

First, the first traction wire 410 may have one end fixed to the first traction ring 130 , while the other end may be mounted on the spacing adjusting member 430 . The first traction wire 410 is two-stranded, approximately arranged in a "V" shape, and one end is fastened to the first traction ring 130 mounted on both sides of the scraper module 100, respectively, and the other end is spaced apart. It may be commonly fastened to the rear portion of the adjuster 430 .

In addition, the second traction wire 420 may have one end fixed to the second traction ring 230 , while the other end may be mounted to the spacing adjusting member 430 . The second traction wire 420 is two-stranded, approximately arranged in a "V" shape, and one end is each again divided into two strands of a "Y" shape and fastened to the second traction ring 230 located up and down, respectively. and the other end may be commonly fastened to the front portion of the spacing adjusting member 430 .

Here, the first traction wire 410 and the second traction wire 420 may be made of a metal material so as not to sag.

And the gap control sphere 430 is an intermediate member for connecting the wire connected to the fishing boat and the first and second traction wires 410 and 420 . The spacing adjusting member 430 is fixed to two first traction wires 410 fixed to both sides of the scraper module 100 at one end, respectively, and fixed to both sides of the net module 200 at the other end, respectively. The two second traction wires 420 are fixed, and the wire connected to the fishing boat at the other end end may be fixed. At this time, the spacing adjustment tool 430 is a tool that can adjust the length of one end and the other end by approximately 10 ~ 30cm, for example, may be a turnbuckle (turnbuckle). Of course, the length adjustment range of the spacing adjusting member 430 may be additionally increased or decreased as needed.

Therefore, the spacing adjusting member 430 adjusts the length of one end and the other end to adjust the spacing of the first traction wire 410 and the second traction wire 420, and as a result, connected to the connecting wire 320 The distance between the net module 200 and the scraper module 100 can be adjusted. Due to this, the distance between the net module 200 and the scraper module 100 can be adjusted according to the state of the tidal flat floor and the topography of the tidal flat, as well as the weight of shellfish contained in the net. This is to ensure that the scraper module 100, which is affected by the upward traction force of the fishing boat, and the net module 200, which is affected by the downward self-weight of shellfish, have as little influence on each other as possible, thereby maximizing the operation separately, the scraper module ( 100) can be prevented from floating from the tidal flat.

And by adjusting the length of one end and the other end of the spacing adjusting member 430 to adjust the gap between the first traction wire 410 and the second traction wire 420, the elastic member 310 is completely stretched to become a straight line. can be prevented.

As described above, those skilled in the art to which the present invention pertains will be able to understand that the present invention may be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. The scope of the present invention is indicated by the claims described later rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included in the scope of the present invention. do.

100: scraper module
110: scraper 111: reinforcing plate
112: fixed hole 1120: horizontal bar
121: vertical bar 122: inclined bar
123: lower transverse bar 124: upper transverse bar
130: first traction ring 131: height adjustment
200: net module
210: mesh bar 220: mesh hook
230: second towing ring
300: connection means
310: connecting wire 320: elastic member
330: fixed member
400: traction means
410: first traction wire 420: second traction wire.
430: spacing control.

Claims (7)

The width is a three-dimensional structure longer than the height, and the scraper module 100 is mounted on the lower side long in the longitudinal direction;
Net module 200 made of a structure that is fixed in a state in which the entrance of the net containing shellfish is opened;
Connection means 300 having a connection wire 320 installed to connect the scraper module 100 and the net module 200 in a state in which the scraper module 100 and the net module 200 are spaced apart; and
Traction having a first traction wire 410 having one end fastened to the scraper module 100 and the other end connected to a fishing vessel, and a second traction wire 420 having one end fastened to the net module 200 and the other end connected to the fishing vessel. means 400; including;
The scraper module 100 that is affected by the upward traction force from the fishing boat by the first traction wire 410 and the second traction wire 420, and the net module that is affected by the downward weight of shellfish contained in the rear net ( 200) is spaced apart by the connecting wire 320 to operate independently of each other,
The traction means 400 is an intermediate member connecting the wire connected to the fishing boat and the first traction wire 410 and the second traction wire 420, the length is adjusted in the longitudinal direction, and the first traction wire 410 of The other end and the other end of the second traction wire 420 further include a gap adjusting member 430 fixed to the front part or the rear part, respectively,
When the length of the gap control member 430 is adjusted, the gap between the first traction wire 410 and the second traction wire 420 is adjusted while the spacing between the scraper module 100 and the net module 200 is adjusted. collection instrument.
delete The width is a three-dimensional structure longer than the height, and the scraper module 100 is mounted on the lower side long in the longitudinal direction;
Net module 200 made of a structure that is fixed in a state in which the entrance of the net containing shellfish is opened;
Connection means 300 having a connection wire 320 installed to connect the scraper module 100 and the net module 200 in a state in which the scraper module 100 and the net module 200 are spaced apart; and
Traction having a first traction wire 410 having one end fastened to the scraper module 100 and the other end connected to a fishing vessel, and a second traction wire 420 having one end fastened to the net module 200 and the other end connected to the fishing vessel. means 400; including;
The scraper module 100 that is affected by the upward traction force from the fishing boat by the first traction wire 410 and the second traction wire 420, and the net module that is affected by the downward weight of shellfish contained in the rear net ( 200) is spaced apart by the connecting wire 320 to operate independently of each other,
The connecting means 300 has an elastic member 310 having one end fixed to the net module 200 and the other end fixed to the connecting wire 320, and the connecting wire 320 while being fixed to the other end of the elastic member 310. Further provided with a fixing member 330 installed to pass,
The phenomenon in which the net module 200 is laid back is prevented by the elastic member 310, and the phenomenon in which the net module 200 is laid forward is prevented by the fixing member 330 touching the scraper module 100. Apparatus for collecting shellfish.
The width is a three-dimensional structure longer than the height, and the scraper module 100 is mounted on the lower side long in the longitudinal direction;
Net module 200 made of a structure that is fixed in a state in which the entrance of the net containing shellfish is opened;
Connection means 300 having a connection wire 320 installed to connect the scraper module 100 and the net module 200 in a state in which the scraper module 100 and the net module 200 are spaced apart; and
Traction having a first traction wire 410 having one end fastened to the scraper module 100 and the other end connected to a fishing vessel, and a second traction wire 420 having one end fastened to the net module 200 and the other end connected to the fishing vessel. means 400; including;
The scraper module 100 that is affected by the upward traction force from the fishing boat by the first traction wire 410 and the second traction wire 420, and the net module that is affected by the downward weight of shellfish contained in the rear net ( 200) is spaced apart by the connecting wire 320 to operate independently of each other,
The scraper module 100 is a horizontal bar 120, a vertical bar 121 and an inclined bar 122 arranged at regular intervals while being coupled to the side in a right triangle on both sides, and the front ends of the horizontal bars 120 at both ends. A lower transverse bar 123 to which the first traction ring 130 to which one end of the first traction wire 410 is fastened to both sides is fixed, and an upper transverse bar 124 for connecting the ends of the vertical bars 121 at both ends. provide more,
The upper transverse bar 124 is a shellfish collection mechanism configured such that a "∪" shape is processed at a position where the second traction wire 420 passes, and the second traction wire 420 is accommodated.
In claim 4,
The scraper module 100 is an instrument for collecting shellfish made by further comprising a height adjustment member 131 that is fixed after the first traction ring 130 is adjusted in the height direction.
In claim 4,
The net module 200 is a net bar 210 installed in a rectangular shape on the front side, a plurality of net rings 220 mounted so that the inlet of the net is caught and fixed on the rear side of the net bar 210, the net bar 210 A shellfish collection mechanism made to further include a second traction ring 230 to which the tip of the second traction wire 420 branched in a "Y" shape is fastened to the upper and lower sides of the front both sides of the scraper module 100 side.
In claim 1,
The scraper 110 is made of round rods, wires or polygonal rods arranged obliquely up and down at regular intervals,
The scraper module 100 is fixed to the lower portion, and a shellfish collecting mechanism made by selectively further comprising a reinforcing plate 111 through which the round bar is inserted.

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