KR20040044698A - An apparatus for preventing sealing-cloth breakage and covering a sleeve in a charging car for a coke oven - Google Patents

Abstract

PURPOSE: An apparatus for preventing damage of sealing cloth and covering sleeve in coke oven charging car is provided to prevent wearing of the sealing cloth by installing sealing cloth inner encircling body at lower part of inner sleeve and prevent generation of gap between lower part of the drop sleeve and charging door frame by installing sleeve cover body on the outer wall of drop sleeve. CONSTITUTION: In a coke over charging car comprising a drop sleeve(150) connected to an inner sleeve(160) at the outer wall side of charging chute(110) on main body by sealing cloth(170) to charge coal into coke oven chamber, the apparatus(1) for preventing damage of the sealing cloth and covering sleeve in the coke oven charging car comprises a sealing cloth inner encircling body(10) perpendicularly fixed to the bottom of the inner sleeve adjacently to the sealing cloth to prevent bending of the sealing cloth; and a sleeve cover body(30) installed at the outer side of the drop sleeve so that the sleeve cover body cooperates with the drop sleeve as the sleeve cover body is being vertically moved by cross bar(130) to charge coal into the charging door without formation of gap on charging door, wherein the sealing cloth inner encircling body comprises connection rod(12) and ring shaped encircling body(14), wherein the sleeve cover body comprises ring shaped plate, cylindrical heat resistant cover and cylindrical cover(36), and wherein guide(38) and fixing block(40) are respectively installed upper and lower parts of the outer circumferential surface of the drop sleeve.

Description

`` AN APPARATUS FOR PREVENTING SEALING-CLOTH BREAKAGE AND COVERING A SLEEVE IN A CHARGING CAR FOR A COKE OVEN}

The present invention relates to a sealing cloth damage preventing device connected between an inner sleeve and a drop sleeve and a sleeve cover device provided outside of the drop sleeve in a charging vehicle for charging coal into a carbonization chamber of a coke oven. By effectively preventing the sealing cloth of the charging vehicle from being damaged, it prevents air pollution due to dust generated during the charging of coal, and is a heat-resistant cover installed on the outside of the drop sleeve. The present invention relates to a sealing cloth damage prevention and sleeve cover device of a coke oven charging vehicle that can be effectively prevented.

Coke, a raw material used in blast furnace operations, undergoes several pretreatment steps in advance. Among them, coke oven operation is carried out, and the coal is charged into the carbonization chamber of the coke oven, and then the operation is carried out at high temperature. What is used when charging coal to the carbonization chamber of a coke oven is called coke oven charging car, and is shown schematically in FIG. 1 and FIG.

That is, as shown in FIGS. 1 and 2, the carbonization chamber 140 is substantially mounted on the crossbar 130 that is lowered as the upper driving cylinder 120 at the lower portion of the charging chute 110 of the charging vehicle 100. Drop sleeve 150 is inserted into the charging hole 142 of the) is fixed, the inner sleeve 160 is fixed to the charging chute 110 side inward, the inner sleeve 160 and the charging chute 170 The sealing cloth 170 for blocking the leakage of coal dust or flame that flows back to the charging inlet 142 side when charging the carbonization chamber 140 of the coal is connected between.

At this time, the sealing cloth 180 is made of a heat-resistant material of 700-800 ℃, for example, glass fiber, the reason for using such a sealing cloth 170, the carbonization chamber 140 of the charging inlet 142 When the lead frame 142a is deformed, the lower end 150a of the drop sleeve 150 may be inserted while flowing from side to side without being smoothly inserted into the lead frame 142a. It is possible to flow in the direction to facilitate the insertion of the charging inlet of the drop sleeve 150, and also during the coal loading of the flame or coal dust ejected back through the drop sleeve 140 and the inner sleeve (160) It also prevents external scattering.

The sealing cloth 170 is fastened and fixed as a steel band 172 on the upper outer wall of the inner sleeve 160 and the drop sleeve 150, respectively.

By the way, in the sealing cloth 170 of the conventional charging vehicle, as shown in Fig. 3a, the drop sleeve 150 is lowered by the lowering operation of the crossbar 130 by the drive cylinder 120, the lower end portion 150a Is inserted into the charging lead frame 142a of the carbonization chamber 140, while negative (-) pressure is generated inside the charging chute 110, the inner sleeve 160, and the drop sleeve 150, FIG. As shown in, the sealing cloth 170 is pulled inward.

Therefore, as shown in FIG. 3B, when the drop sleeve 150 completes the charging of coal in the carbonization chamber and ascends, the drop sleeve 150 and the inner sleeve 160 are sequentially raised and received negative internal pressure. The pulled sealing cloth 170 is bent inwardly to be pinched between the inner sleeve 160 and the drop sleeve 150.

As a result, the sealing cloth 170 is also repeatedly bent during repeated coal loading and is easily broken while being pinched between the inner sleeve 160 and the drop sleeve 150 and, in severe cases, partially broken, thereby countercurrent ejection during coal loading. As the flame or dust is scattered to the outside, there is a problem of causing damage to the equipment and air pollution by deterioration.

In addition, the gas in the oven carbonization chamber may also leak outside through the damaged sealing cloth 170, thereby deteriorating the worker's working environment when the sealing cloth is damaged, and of course, causing a safety accident. The charging vehicle does not have a separate sleeve cover to compensate for the gap between the drop sleeve and the carbonization chamber frame.

The present invention has been made in order to improve the various problems as described above, the purpose of the installation, the sealing cloth of the charging vehicle for charging the coal into the coke oven carbonization chamber by installing the sealing envelope inner envelope in the lower portion of the inner sleeve. The present invention provides an anti-sparking device for preventing breakage of a coke oven charging vehicle, which effectively prevents air leakage and prevents external leakage of backfired flames or coal dust, thereby preventing air pollution, equipment damage, and safety accidents of workers.

In addition, another object of the present invention, by installing a sleeve cover body on the outside of the drop sleeve, to prevent the occurrence of a gap between the lower end of the drop sleeve and the carbonization chamber entrance frame to the coal and the flame through the gap when charging the carbonization chamber An object of the present invention is to provide a sleeve cover device for a coke oven charging vehicle that blocks external dust from dust and effectively prevents accidents caused by fire and equipment damage and air pollution caused by coal dust.

1 is a schematic diagram showing the operation of a charging chute and a drop sleeve of a charging vehicle for charging coal in a coke oven carbonization chamber;

Figure 2 is a front configuration diagram showing a sealing cloth installed between the inner sleeve and the drop sleeve outside the charging chute in the conventional charging car

3 is a view showing a state of a sealing cloth when loading a coal of a conventional charging vehicle,

(a) is a structural diagram showing the state of the sealing cloth when the drop sleeve enters the carbonization chamber frame

(b) is a structural diagram showing the state in which the drop cloth is broken by overlapping the sealing cloth bent by internal pressure when the sleeve is raised at the carbonization chamber entrance;

Figure 4 is a schematic front view showing a sealing cloth damage prevention and sleeve cover device of the coke oven charging vehicle according to the present invention

5 is a view showing the operating state of the sealing cloth damage prevention and sleeve cover device of the present invention coke oven charging vehicle,

(a) is a structural diagram showing a state when charging coal into an oven carbonization chamber;

(b) is a structural diagram showing the state of ascending after coal loading

Figure 6 is a partially cutaway exploded view showing the sealing cloth damage prevention and sleeve cover device of the present invention coke oven charging vehicle

Explanation of symbols for the main parts of the drawings

1 .... Sealing cloth breakage prevention and sleeve cover device

10 .... Inner enclosure of sealing fabric 12 .... Connecting rod

14 .... annular enclosure 30 .... sleeve cover

32 .... Heatproof 34 .... Heat-resistant cover

36 .... Cylinder Cover 38 .... Guide

40 ... fixed block 100 ...

110 .... Charging Suit 130 .... Crossbar

150 .... drop sleeve 160 .... inner sleeve

170 .... Shilling For

In the technical configuration for achieving the above object, the present invention, in the coke oven charging vehicle having a drop sleeve connected to the inner sleeve on the outer side of the charging chute on the main body as a sealing cloth to charge coal in the carbonization chamber,

A sealing cloth inner envelope which is vertically fixed to the bottom of the inner sleeve in close proximity to the sealing cloth to prevent bending of the sealing cloth; And,

It is provided on the outside of the drop sleeve and moves up and down as a crossbar while cooperating with the drop sleeve to charge the coal without generating a gap in the charging hole; to provide a seal preventing damage and sleeve cover device of the coke oven charging vehicle consisting of By

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is a schematic front view showing a sealing cloth damage prevention and sleeve cover device of the coke oven charging vehicle according to the present invention, Figure 5 shows the operating state of the sealing cloth damage prevention and sleeve cover device of the coke oven charging vehicle of the present invention. 6 is a partial cutaway exploded view illustrating a sealing cloth breakage prevention and sleeve cover device in a coke oven charging vehicle according to the present invention, wherein the same components as in the prior art are denoted by the same reference numerals.

4 shows the overall structure of the sealing cloth breakage prevention and sleeve cover device 1 in the coke oven charging vehicle of the present invention, the sealing cloth breakage prevention and sleeve cover device 1 of the present invention is largely a sealing cloth It is divided into an inner enclosure 10 and a sleeve cover body 30, and these components 10 and 30 will be described in detail as follows.

First, referring to the charging vehicle 100 having the sealing cloth 170 according to the present invention, as shown in Figures 1 and 4, to the outside of the charging chute 110 fixed to the charging vehicle 100 side The drop sleeve 150 is disposed through the inner sleeve 160, and the drop sleeve 150 is formed by the annular plate 32 of the sleeve cover body 30 connected to the crossbar 130 described below. When moving up and down, the lower end portion 150a of the drop sleeve 150 is in close contact with the charging opening 142 side of the carbonization chamber 140.

That is, as shown in Figure 4, the inner sleeve 160 is interposed between the charging chute 110 and the outer drop sleeve 150, the inner sleeve 160 is a coal field into the carbonization chamber The vertical portion 160a of the entrance prevents the occurrence of a gap between the charging chute 110 and serves to block external leakage of coal dust ejected through the carbonization chamber charging opening 142 when the coal is charged, and according to the present invention. The sealing cloth 170 is connected between the inner sleeve 160 and the drop sleeve 150, which enables flow in close contact with the inlet 142 side of the drop sleeve 150, as described above.

Next, Figure 4 shows the overall configuration of the sealing cloth damage prevention and sleeve cover device 1 of the coke oven charging vehicle of the present invention, the sealing cloth damage prevention and sleeve cover device of the coke oven charging vehicle of the present invention ( 1) can be broadly divided into a sealing cloth inner enclosure 10 and a sleeve cover body 30, and each of the components 10 and 30 will be described in detail as follows.

First, FIGS. 5 and 6 illustrate the sealing cloth inner enclosure 10 of the sealing cloth breakage prevention and sleeve cover device 1 in the coke oven charging vehicle according to the present invention. The enclosure 10 is vertically fixed close to the sealing cloth 170 at the bottom of the inner sleeve 160 interposed between the charging chute 110 and the drop sleeve 150 at the outer side of the sealing cloth. 170 is installed to prevent the phenomenon of bending the inner side at negative internal pressure when charging the coal in the state surrounding the inner side thereof.

That is, as shown in Figure 6, the sealing cloth inner enclosure 10 is composed of a connecting rod 12 and an annular enclosure 14, the connecting rod 12 of the inner sleeve (160) It is fixed to the bottom of the horizontal upper end portion 160a as a bolt 16b, a plurality of fastening grooves through which the fixing bolt 16b which is fastened to the screw groove 12a formed in the connecting rod 12 passes through the inner sleeve 160. 16a are formed.

Next, the annular enclosure 14 of the sealing envelope inner enclosure 10 is formed in an annular shape, that is, a ring shape, which is fixed integrally to the bottom of the connecting rod 12, and in this case, the annular enclosure is important. 14 should be disposed in a position in close contact with the inside of the sealing cloth 170 connected between the inner sleeve 160 and the drop sleeve 150.

That is, as shown in FIGS. 3 and 5, the sealing cloth 170 is bent inward while negative pressure is applied when the sealing cloth 170 is inserted into the charging hole 142 of the drop sleeve 150. The phenomenon is such that the annular enclosure 14 of the sealing cloth inner enclosure 10 is blocked, and thus, even when the drop sleeve 150 shown in FIG. 5B is raised, the sealing cloth 170 is not bent inward. Since wrinkles are maintained while maintaining the vertical state, damage to the sealing cloth due to repeated bending as in the prior art is prevented.

Next, FIGS. 4 to 6 show the sleeve cover body 30 of the sealing cloth damage prevention and sleeve cover device 1 in the coke oven charging vehicle of the present invention, and the sleeve cover body 30 of the present invention as described above. ) Is provided on the outer side of the drop sleeve 150 to ensure the gap between the drop sleeve 150 and the carbonization chamber charging hole 142 to ensure the external scattering of flame and coal dust spouted during coal charging. Configured to block.

At this time, as shown in Figure 5 and 6, the sleeve cover body 30, it is provided with an annular plate 32, the heat-resistant cover 34 and the cylindrical cover 36, in detail, The annular plate 32 of the sleeve cover body 30 is connected to a crossbar 130 that moves up and down as a drive cylinder 120 (FIG. 1) of the charging vehicle 100.

That is, the annular plate 32 is connected to the crossbar 130 at two points in the circumferential direction through the connecting pin 132.

Next, as shown in Figs. 5 and 6, the heat-resistant cover 34 of the sleeve cover body 30 of the present invention is integrally connected to the lower portion of the annular plate 32 and in appearance cylindrical shape Although schematically shown in the drawings, the heat-resistant cover 34 is actually formed of a stainless steel net that the small rings made of stainless steel (SUS) are connected to each other to increase heat resistance and to improve the heat resistance at the outside of the drop sleeve 150. It is to cover tightly and fluidly, such a heat-resistant cover (34) is to minimize the diameter of the ring and to produce a plurality of layers through this through the charging inlet 142 of the carbonization chamber 140 coal dust flowed back to the outside It would be desirable to be installed to block as much as possible from scattering.

Next, as illustrated in FIGS. 5 and 6, the cylindrical cover 36 of the sleeve cover body 30 is formed of a cylindrical stainless plate integrally connected to the lower portion of the heat resistant cover 34. In this stainless cylindrical cover 36, the lower end of the heat-resistant cover 34 is overlapped with a fixing jaw (36a) that is fixed as a bolt 36b is formed integrally on the top.

And, as shown in Figure 5a, the lower diameter of the circular cover 36 is close to the outer diameter of the lead frame 142a of the carbonization chamber charging hole 142 close to the charging lead frame 142 It is important that it is formed to be in close contact, the lower end portion (150a) of the drop sleeve 150 is placed on top of the gap between the insertion hole 142 and the cylindrical cover 36 to block the occurrence of the lower end of the drop sleeve 150 150a is in close contact with the cylindrical cover 36 of the sleeve cover body 30 without a gap.

That is, according to the sleeve cover body 30 of the sleeve cover device 1 of the present invention, the sleeve cover body (primarily in the present invention), as compared with the conventional drop sleeve 150 is fitted to the charging hole 142 side. The circular cover 36 of 30) is in close contact with the lead frame 142a, and the double contact structure moss in which the lower end 150a of the drop sleeve is in close contact therewith prevents the backflow of flame and coal dust due to the gap. It can be.

At this time, in the present invention, unlike the prior art, the inner sleeve 160 and the drop sleeve 150 are connected to the sealing cloth 170, and the drop sleeve 150 is actually the annular plate 32 of the sleeve cover body 30. Since the moving together in the vertical movement of the, the length between the inner sleeve 160 and the drop sleeve 150 is adjusted so that even if the drop sleeve 150 is lowered, the sealing cloth 170 is relaxed without being taut. It is important to be installed, and the heat-resistant cover 34 of the sleeve cover body 30 also has a length that allows a margin in consideration of the vertical movement width.

Meanwhile, as illustrated in FIGS. 5 and 6, the sleeve cover device 1 of the coke oven charging vehicle of the present invention further includes a guide 38 and a fixing block 40, which will be described in detail. The guide 38 is provided on both sides of the outer surface of the drop sleeve 150.

That is, the guide 38 is formed in a triangular shape so that when the crossbar 130 is raised as the driving cylinder 120 (FIG. 1), the annular plate 32 of the sleeve cover body 30 connected thereto is connected to the guide 38. Guided by), the annular plate 32 is always maintained at a constant interval on the outside of the drop sleeve 150, the centering is adjusted.

Next, the fixing block 40 is respectively installed on the upper portion of the guide 38 to the outside of the drop sleeve 150, such fixing block 40 is the annular plate 32 is inserted into the inside It is made of a configuration in which the fixing groove 40a of the inverted V shape that is supported is integrally formed.

Referring to the operation of the present invention made in the above configuration in detail as follows.

As shown in FIGS. 4 to 6, the inner sleeve 160 and the drop sleeve (outside the charging chute 110) in the charging vehicle 100 charging the coal into the coke oven carbonization chamber 140 during the coal drying process. The sealing cloth 170 connected between the 150 prevents breakage due to frequent bending, and in addition, blocks the gap between the lower end 150a of the drop sleeve 150 and the charging lead frame 142a when the coal is charged. In the meantime, the sealing cloth damage prevention and sleeve cover device 1 of the coke oven charging vehicle of the present invention, which prevents a safety accident such as a burn of an operator due to the high temperature of the drop sleeve 150 and equipment damage, is as follows. .

First, as shown in Figures 1, 4 and 5b, when the operator operates the drive cylinder 120 installed on the charging vehicle 100 side, the sleeve integrally with the crossbar 130 connected to the drive unit 120 The annular plate 32 of the cover body 30 descends while being centered as the outer guide 38 of the drop sleeve 150, and at this time, the drop sleeve 150 connected to the inner sleeve 160 and the sealing cloth 170. ) Is lowered integrally with the annular plate (32).

Therefore, as illustrated in FIG. 5A, the cylindrical cover 36 is primarily formed in the carbonization chamber charging unit 142 integrally with the heat-resistant cover 34 below the annular plate 32 which is connected to the crossbar 130 and moves. The lower end portion 150a of the drop sleeve 150 that is lowered thereon is inserted in close contact with the lead frame 142a.

Accordingly, the lower end cylindrical cover 36 of the sleeve cover body 30 and the lower end of the drop sleeve in the present invention, as compared with the conventional simple lower end 150a of the drop sleeve 150 is in close contact with the charging lead frame 142a. Since 150a is in close contact with each other, a gap between the lead frames can be reliably blocked, and thus, external flow of the backflow flame and coal dust through the gap can be prevented, which causes damage to the equipment and safety accidents caused by the flame. At the same time, it also prevents air pollution caused by dust, especially environmental pollution in the workplace.

At this time, since the cylindrical cover 36 of the sleeve cover body 30 is fixed to the annular plate 32 which is raised and lowered through the heat-resistant cover 34 of the mesh type of stainless steel net, the fraudulent cylindrical cover 36 The insertion of the cylindrical cover 36 facilitates the right and left flow, and primarily when the annular plate 32 is lowered or raised when the centering is adjusted as the guide 38, the insertion of the cylindrical cover 36 There will be no gap.

Also, as shown in FIGS. 5A and 6, the sealing cloth 170 fixed as the steel band 172 between the inner sleeve 160 and the drop sleeve 150 of the charging vehicle 100, that is, as a glass fiber The sealing cloth 170 that can withstand high temperatures may have a drop sleeve 150 and a sleeve cover body 30 adhered to the carbonization chamber insert 142 to receive a negative internal pressure. The sealing cloth 170 is prevented from being bent inward by the sealing cloth inner envelope 10 of the present invention disposed at the bottom of the horizontal portion 160a of the 160 (FIG. 3A).

At this time, as shown in Figure 6, the sealing cloth inner envelope 10 is fixed to the connecting rods 12 as a fixing bolt (16b) to the horizontal portion (160a) of the inner sleeve 160, thereby Since the annular enclosure 14 is fixed, and the annular enclosure 14 is surrounded and supported in a state in which the inner surface of the sealing cloth 170 is in close contact, the bending of the sealing cloth 170 is completely completed. Is blocked.

Therefore, as shown in FIG. 5B, even after the charging of the carbonization chamber of the coal is completed, even if the annular plate 32 and the drop sleeve 150 are raised together with the rise of the crossbar 130, the sealing cloth 170 as in the related art. ) Is completely prevented from bending between the inner sleeve 160 and the drop sleeve 150, wherein the upper end 150b of the drop sleeve 150 is the annular shape of the sealing envelope inner enclosure 10 of the present invention. Due to contact with the enclosure 34, the sealing cloth 170 is also completely bent.

Accordingly, according to the sealing cloth inner envelope 10, the bending of the sealing cloth 170 by the internal pressure of the inner side of the drop sleeve 150 is blocked to effectively prevent the damage of the sealing cloth 170.

On the other hand, as shown in Figure 5 and 6, the heat-resistant cover 34 of the sleeve cover body 30 of the present invention, even if the flame is counterflowing through the carbonization chamber charging hole 142 during the charging of the coal drop sleeve Since it covers the outside of the 150, problems caused by deterioration due to the high temperature drop sleeve 150, for example, to effectively prevent equipment damage due to burns and deterioration of the operator.

At this time, the guide 38 and the fixing block 40 on the upper side of each of the drop sleeve 150 is installed, the annular plate 32 of the sleeve cover body 30 as the crossbar 130 is raised or lowered. In this case, the centering is firstly adjusted by the guide 38, and then continuously ascending and fixed in the inverted V-shaped fixing groove 40a of the fixing block 40 to always maintain the position of the annular plate 32. This is to keep the insertion opening of the sleeve cover body 30 constant to block the occurrence of gaps.

Accordingly, according to the present invention, the sealing cloth damage prevention and sleeve cover device 1 of the coke oven charging vehicle, while preventing the damage of the sealing cloth 170, the lower end 150a of the drop sleeve 150 and the charging inlet frame 142a It is to prevent the occurrence of backlash of flames and dusts, and equipment damages and safety accidents of workers, by blocking the occurrence of gap between them.

As described above, according to the present invention, the sealing cloth breakage preventing device of the coke oven charging vehicle effectively prevents the sealing cloth of the charging vehicle charging coal into the coke oven carbonization chamber, thereby preventing external scattering of flame or coal dust through the air. It provides the advantages of preventing pollution, equipment damage and worker safety accidents.

In addition, according to the sleeve cover device of the coke oven charging car of the present invention, the circular cover of the sleeve cover body is in close contact with the lead frame of the carbonization chamber charging in cooperation with the lower end of the drop sleeve, so that the flame and coal dust through the gap The external ejection of the gas is blocked to effectively prevent worker safety accidents, equipment damage and air pollution, while preventing the loss due to deterioration as a double cover structure of the drop sleeve and the heat resistant cover.

Therefore, according to the present invention, the sealing cloth damage prevention and sleeve cover device of the coke oven charging vehicle is used to make the operation of charging the coal in the coking oven carbonization chamber more stable and to extend the life of the equipment. It is to provide an excellent effect.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to know that those who have knowledge of this can easily know.

Claims (4)

In the coke oven charging vehicle 100 having a drop sleeve 150 connected to the inner sleeve 160 and the sealing cloth 170 on the outer side of the charging chute 110 on the main body to charge the coal into the carbonization chamber, A sealing cloth inner enclosure 10 which is vertically fixed to the bottom of the inner sleeve 160 to be close to the sealing cloth 170 to prevent bending of the sealing cloth; And, A sleeve cover body 30 which is provided on the outside of the drop sleeve 150 and moves up and down as a crossbar 130 to charge coal without generating a gap in the charging hole in cooperation with the drop sleeve 150; Sealing cloth damage prevention and sleeve cover device of coke oven charging car The method of claim 1, wherein the sealing cloth inner envelope 10, A connecting rod 12 bolted to a bottom of a horizontal upper end 160a of the inner sleeve 160; And, An annular enclosure 14 fixed to the bottom of the connecting rod 12 to be in close contact with the adjacent sealing cloth 170; and configured to prevent the sealing cloth 170 from bending inward during negative pressure resistance. Vehicle sealing cloth damage prevention and sleeve cover device The method of claim 1, wherein the sleeve cover body 30, A cross-shaped plate 32 which is connected to the crossbar 130 to enable vertical movement of the drop sleeve 150 while moving up and down; and A cylindrical heat resistant cover 34 integrally connected to a lower portion of the annular plate 32; And, Sealing cloth damage prevention and sleeve cover device of the charging vehicle, characterized in that configured as; lower side of the heat-resistant cover 34, the cylindrical cover 36 is disposed below the lower end (150a) of the drop sleeve 150 According to claim 1 or claim 3, The upper and lower outer peripheral surface of the drop sleeve 150, both sides at the time of raising the annular plate 32 to prevent the annular plate 32 of the sleeve cover body 30 is biased Guide 38 to guide in; And. Fixed block 40 formed with a fixing groove (40a) is inserted into the annular plate 32 fixed; Sealing damage and sleeve cover device of the charging vehicle, characterized in that each installed