Separable shoe block having improved leakage prevention performance

Abstract

The present invention relates to a separable shoe block having improved leakage prevention performance, the separable shoe block comprising: a first body part that presses against a steel surface during a scarfing process and has a cooling line formed inside; a second body part that is disposed above the first body part and has one side coupled to the lower side of a head block of a scarfing device; and a plurality of leakage prevention plugs that close a plurality of processing holes for processing the cooling line formed inside the first body part.

Description

Detachable shoe block with enhanced leak prevention performance

[0001] The present invention relates to a detachable shoe block with enhanced leak-prevention performance, and more specifically, to a detachable shoe block with enhanced leak-prevention performance in which the arrangement of the cooling line inside the shoe block coupled to the scarfing device is changed to minimize shape change due to high heat and friction, and the watertightness of the plug for closing the processing hole formed during the cooling line processing is improved.

[0002] In general, a scarfing machine is composed of a scarfing unit that emits a mixture of gas and high-pressure oxygen necessary for flame generation to remove surface defects of steel, a head block mounted on a gas distributor, an upper block that emits a mixture of gas and high-pressure oxygen toward the steel while being coupled to the front of the head block, a lower block, and a shoe block that is coupled to the bottom of the head block and the lower part of the lower block and is in close contact with the surface of the steel during the scarfing process to protect the head block and the lower block and through which cooling water is circulated to prevent overheating.

[0003] Among these, a cooling line for circulating cooling water is formed in the shoe block to prevent overheating and thermal deformation of the head block and lower block by heat source conducted from the steel material overheated by the influence of flame.

[0004] In order to form a cooling line, multiple machined holes are formed on the side of the shoe block body, cooling lines are formed inside, and then the machined holes are closed. At this time, in order to close the machined holes, a plug with threads formed on the outer surface is screwed into the machined hole to close it. However, in this process, as coolant continuously circulates along the cooling line, a problem of water leaking between the machined holes and the plug occurs. Therefore, a technology is required to solve the leakage problem between the shoe block and the plug in a high-temperature scarfing environment.

[0005] The present invention is intended to solve the above-mentioned problems, and to provide a detachable shoe block with enhanced leak prevention performance by changing the arrangement of the cooling line inside the shoe block coupled to the scarfing device to minimize shape change due to high heat and friction, and improving the watertightness of the plug for closing the processing hole formed during the cooling line processing.

[0006] A detachable shoe block (100) with enhanced leak prevention performance according to one embodiment of the present invention may include a first body part (110) that is in close contact with a steel surface during a scarfing process and has a cooling line (111) formed on the inside, a second body part (120) that is arranged on the upper side of the first body part (110) and has one side coupled to the lower side of the head block of a scarfing device, and a plurality of leak prevention plugs (130) that close a plurality of processing holes (110a) formed inside the first body part (110) for processing the cooling line (111).

[0007] In one embodiment, the processing hole (110a) may include a negative thread portion (110a-1) formed along the inner surface to a predetermined depth, a first processing passage (110a-2) formed inward from the negative thread portion (110a-1) to a predetermined depth and having an end diameter that gradually narrows toward the inner surface, and a second processing passage (110a-3) connected from the first processing passage (110a-2) and connected to the cooling line (111).

[0008] In one embodiment, the cooling line (111) includes a plurality of vertical cooling lines (111-1) machined inwardly from the rear surface of the first body portion (110) based on the forward-backward movement direction of the scarfing device, and a plurality of horizontal cooling lines (111-2) machined inwardly from the side surface of the first body portion (110) based on the forward-backward movement direction of the scarfing device, and the plurality of vertical cooling lines (111-1) and the plurality of horizontal cooling lines (111-2) are formed to be connected to each other on the inside of the cooling line (111), and the machined hole (110a) may be formed at the end of each of the plurality of vertical cooling lines (111-1) and the plurality of horizontal cooling lines (111-2).

[0009] In one embodiment, the first and second body parts (110, 120) are formed in a structure that is separable from each other, and the first and second body parts (1110, 120) can be bolt-connected to each other through a plurality of bolts inserted from the upper side to the lower side of the second body part (120).

[0010] In one embodiment, a plurality of fixing protrusions (112) that are inserted into the inside of the second body part (120) may be formed protrudingly on the upper side of the first body part (110), and a plurality of protrusion receiving grooves (121) for inserting the plurality of fixing protrusions (112) may be formed engraved on the lower side of the second body part (120).

[0011] In one embodiment, a support (122) that supports the rear surface of the first body part (110) during the scarfing process of the scarfing device may be provided on the lower side of the second body part (120).

[0012] In one embodiment, the leak prevention plug (130) is fastened to the processing hole (110a) and includes a body part (131) having a shape corresponding to the inner shape of the processing hole (110a), a fastening head (132) formed at one end of the body part (131), a positive threaded portion (133) formed along the outer circumference to be bolted to the negative threaded portion (110a-1) formed on the body part (131), a first sealing groove (134) formed negatively inwardly along the circumference at the center of the body part (131), a second sealing groove (135) formed negatively inwardly along the circumference at the end of the body part (131), a first sealing member (136) having a ring shape arranged in the first sealing groove (134) and a second sealing member having a ring shape arranged in the second sealing groove (136). It may include a second sealing member (137).

[0013] In one embodiment, a contact surface (132-1) may be formed on the side of the fastening head (132) to be in contact with a spanner that rotates the body part (131) clockwise or counterclockwise.

[0014] In one embodiment, the fastening head (132) can be cut from the body part (131) through cutting processing after the body part (131) is fastened to the processing hole (110a).

[0015] According to the present invention, there is an advantage in that the arrangement of the internal cooling line of the shoe block coupled to the scarfing device can be changed to minimize deformation caused by high heat and friction.

[0016] In addition, according to the present invention, a double watertight sealing member is arranged on a plug for closing a machining hole formed during cooling line machining, thereby further increasing watertightness and preventing high-pressure cooling water from leaking to the outside, thereby having the advantage of being able to cool a high-temperature shoe block more effectively.

[0017] In particular, according to the present invention, the structure is designed so that the plug can be as closely packed as possible into the taper position within the shoe block, thereby having the advantage of further increasing watertightness by being tightly packed as closely as possible without any gaps in the machined hole for forming the cooling line.

[0018] FIG. 1 is a drawing showing the overall shape of a scarfing device to which a detachable shoe block (100) with enhanced leak prevention performance according to one embodiment of the present invention is applied.

[0019] FIG. 2 is a drawing showing the overall shape of a detachable shoe block (100) with enhanced leak prevention performance according to one embodiment of the present invention.

[0020] Fig. 3 is an exploded perspective view of the detachable shoe block (100) with enhanced leak prevention performance illustrated in Fig. 2.

[0021] Figure 4 is a drawing schematically showing the overall shape of the first body part (110).

[0022] Figure 5 is a drawing showing the first body part (110) in more detail.

[0023] Figure 6 is a drawing showing in more detail the configuration of the cooling line (111) formed inside the first body part (110).

[0024] Figure 7 is a drawing showing the flow of cooling water along the cooling line (111).

[0025] Figure 8 is a drawing showing the second body part (120) in more detail.

[0026] Figure 9 is a drawing showing the leak prevention plug (130) in more detail.

[0027] Figure 10 is a cross-sectional view showing in more detail the state in which a leak prevention plug (130) is connected to a processing hole (110a).

[0028] Figure 11 is a drawing showing a state in which the body part (131) is fastened to the processing hole (110a) and then the fastening head (132) is cut through cutting processing.

[0029]

[0030] <Explanation of symbols>

[0031] 100: Detachable shoe block with enhanced leak prevention performance

[0032] 110: First body part

[0033] 110a: Machining hole

[0034] 110a-1: Engraved threaded part

[0035] 110a-2: First processing passage

[0036] 110a-3: Second processing passage

[0037] 111: Cooling line

[0038] 111-1: Vertical cooling line

[0039] 111-2: Horizontal cooling line

[0040] 111-3: Flow barrier

[0041] 112: Fixing protrusion

[0042] 120: Second body part

[0043] 121: Protrusion receiving groove

[0044] 122: Support

[0045] 130: Third body part

[0046] 131: Body

[0047] 132: Fastening head

[0048] 132-1: Adhesive surface

[0049] 133: Double-sided screw thread

[0050] 134: First sealing groove

[0051] 135: Second sealing groove

[0052] 136: First sealing member

[0053] 137: Second sealing member

[0054] Hereinafter, specific details for implementing the present invention will be described in detail with reference to the attached drawings. However, in the following description, specific descriptions of widely known functions or configurations will be omitted if they may unnecessarily obscure the gist of the present invention.

[0055]

[0056] FIG. 1 is a drawing showing the overall shape of a scarfing device to which a detachable shoe block (100) with enhanced leak-prevention performance is applied according to one embodiment of the present invention, FIG. 2 is a drawing showing the overall shape of a detachable shoe block (100) with enhanced leak-prevention performance according to one embodiment of the present invention, and FIG. 3 is an exploded perspective view of the detachable shoe block (100) with enhanced leak-prevention performance illustrated in FIG. 2.

[0057] Looking at FIGS. 1 to 3, a detachable shoe block (100) with enhanced water-leakage prevention performance according to one embodiment of the present invention may largely include first and second body parts (110, 120) and a plurality of water-leakage prevention plugs (130).

[0058] The first body part (110) can be in close contact with the upper surface of the steel material during the scarfing process, and is positioned closest to the high-temperature steel material, so that a cooling line (111) can be formed on the inside to prevent thermal deformation due to heat. This will be examined in more detail as follows.

[0059] Figure 4 is a drawing schematically showing the overall shape of the first body part (110), and Figure 5 is a drawing showing the first body part (110) in more detail.

[0060] Referring to FIGS. 4 and 5, the first body part (110) may have a lower surface formed flat so that it can be in close contact with the upper surface of a flat steel material, and the lower rear surface of the first body part (110) may be formed with a slope at a certain angle based on the scarfing direction of the scarfing device. At this time, since the first body part (110) is placed in a position that receives the most heat by being in close contact with the steel material heated to a high temperature, a cooling line (111) may be formed on the inside for cooling.

[0061] Here, in order to form a cooling line (111) on the first body part (110), first, a plurality of processing holes (110a) must be processed on the side of the first body part (110) and the inside must be pierced. After the processing holes (110a) are drilled, a leak prevention plug (130) is coupled to each processing hole (110a), thereby preventing the high-pressure cooling water flowing in the cooling line (111) from being discharged to the outside.

[0062] At this time, the processing hole (110a) is drilled from the outside to the inside to form a cooling line (111). The shape of the processing hole (110a) is as follows.

[0063] Referring to Fig. 5, the machining hole (110a) can be broadly divided into three areas. Basically, the machining hole (110a) can be formed inwardly on one side of the first body portion (110), and at this time, a negative thread portion (110a-1) is formed along the inner surface to a predetermined depth. The negative thread portion (110a-1) can be bolt-connected to the positive thread portion (133) of the leak-prevention plug (130) described below. For this purpose, the negative thread portion (110a-1) can be formed in a shape corresponding to the positive thread portion (133). In addition, the depth of the negative thread portion (110a-1) is not limited, and can be formed to a sufficient depth so that the bolt-connected leak-prevention plug (130) does not come loose.

[0064] A first processing passage (110a-2) may be formed from the engraved screw thread portion (110a-1) to the inside of the first body portion (110). The first processing passage (110a-2) is formed to have a predetermined depth inward from the engraved screw thread portion (110a-1) and has a shape in which the diameter of the end gradually narrows as it goes inward. At this time, the shape of the first processing passage (110a-2) may be formed to perfectly match the body portion (131) of the leak-prevention plug (130) described below without a gap, and the first sealing member (136) provided on the leak-prevention plug (130) may be fitted into the first processing passage (110a-2). In this case, the cooling water in the cooling line (111) may be blocked by the first sealing member (136), thereby preventing leakage to the outside. The first processing passage (110a-2) has a shape in which the diameter of the end gradually narrows as it goes toward the inside of the first body part (110), and accordingly, the body part (131) of the leak prevention plug (130) described later can be attached and hooked to the area in which the diameter gradually narrows.

[0065] A second processing passage (110a-3) is formed to extend from the first processing passage (110a-2) to the inside of the first body portion (110), and the second processing passage (110a-3) is connected to a cooling line (111). At this time, the inner diameter of the second processing passage (110a-3) may be formed to correspond to the inner diameter of the cooling line (111). In addition, the shape of the second processing passage (110a-3) may be formed to perfectly match the end portion of the body portion (131) of the leak-prevention plug (130) described later without a gap, and a second sealing member (137) provided at the end portion of the leak-prevention plug (130) may be fitted into the second processing passage (110a-3). In this case, the cooling water in the cooling line (111) is blocked by the second sealing member (137), thereby preventing leakage to the outside.

[0066] Looking at the overall shape depth of this machining hole (110a), it can be formed deep enough to almost touch the cooling line (111). In this case, the leak prevention plug (130) bolted to the machining hole (110a) can also be connected as deep as possible to be as close to the cooling line (111), so that the sealing power and leak prevention performance can be further maximized.

[0067] In addition, the first and second sealing members (136, 137) can be double-fitted and connected inside the processing hole (110a), so that the cooling water in the cooling line (111) is double-blocked, thereby further maximizing the sealing power and leak prevention performance.

[0068]

[0069] Meanwhile, the cooling line (111) formed inside the first body part (110) serves as a passage for cooling the shoe block heated to a high temperature through the circulation of cooling water. This will be examined in more detail as follows.

[0070] Figure 6 is a drawing showing in more detail the configuration of the cooling line (111) formed inside the first body part (110), and Figure 7 is a drawing showing the flow of cooling water flowing along the cooling line (111).

[0071] Referring to Fig. 6, a cooling line (111) can be formed inside the first body part (110). The cooling line (111) can be largely composed of a plurality of vertical cooling lines (111-1) and a plurality of horizontal cooling lines (111-2).

[0072] A plurality of vertical cooling lines (111-1) can be processed inward from the rear surface of the first body part (110) based on the forward and backward movement direction of the scarfing device. Accordingly, a number of processing holes (110a) corresponding to the number of vertical cooling lines (111-1) can be formed on the rear surface of the first body part (110). Here, each of the plurality of vertical cooling lines (111-1) may have different formation depths. For example, based on FIG. 5, the vertical cooling line (111-1) formed on the far left and the vertical cooling line (111-1) formed on the far right are formed to the innermost side of the first body part (110), and are connected to the horizontal cooling line (111-2) (located at the topmost side based on the drawing) formed at the corresponding positions. Additionally, the vertical cooling line (111-1) formed in the middle based on FIG. 5 can be formed to be connected to the horizontal cooling line (111-2) at the second position based on the drawing.

[0073] Likewise, a plurality of horizontal cooling lines (111-2) can be processed inward from the side of the first body part (110) based on the forward and backward movement direction of the scarfing device. At this time, the plurality of horizontal cooling lines (111-2) are connected to the plurality of vertical cooling lines (111-1) at a 90 degree angle. Therefore, the cooling water introduced through the cooling water inlet provided in the first body part (110) effectively cools the entire area of ​​the first body part (110) through the plurality of vertical cooling lines (111-1) and the plurality of horizontal cooling lines (111-2).

[0074] Meanwhile, the position of the processing hole (110a) according to the present invention may be changed symmetrically left and right compared to the processing hole (110a) formed in the existing shoe block. More specifically, the position of the processing hole (110a) formed in the existing shoe block is adjacent to the heat dissipation unit of the scarfing device that discharges high temperature and high pressure mixed gas and oxygen, so the plug for covering the processing hole (110a) may be exposed to high temperature and may undergo thermal deformation.

[0075] However, since the processing hole (110a) according to the present invention is formed on the opposite side symmetrically compared to the processing hole (110a) formed in the existing shoe block, direct heat transfer from the high heat generated from the heat dissipation part of the scarfing device is minimized, thereby preventing thermal deformation.

[0076] In addition, in one embodiment, the first body part (110) is formed to be separable from the second body part (120), and when the second body part (120) is coupled to the upper side of the first body part (110), the first body part (110) and the second body part (120) can be bolt-coupled to each other through a plurality of bolts penetrating the second body part (120) from the upper side of the second body part (120). To this end, a bolt-coupling screw thread for coupling the plurality of bolts can be provided on the first body part (110).

[0077] In addition, in one embodiment, a plurality of fixing protrusions (112) may be formed protrudingly on the upper side of the first body part (110) to be inserted into the inside of the second body part (120) described later. The fixing protrusions (112) have a circular wall shape that protrudes upward from the position of the bolt joint hole for bolt joint when bolt-joining with the second body part (120). These fixing protrusions (112) serve to firmly fix the first body part (110) and the second body part (120) without moving each other when the first body part (110) is tightly coupled with the second body part (120). To this end, a plurality of protrusion receiving grooves (121) for inserting the plurality of fixing protrusions (112) may be formed engraved on the lower side of the second body part (120).

[0078] Additionally, in one embodiment, a flow blocking film (111-3) may be arranged on the cooling line (111) to control the flow of coolant so that the coolant flows naturally in one direction along the cooling line (111). A plurality of flow blocking films (111-3) are arranged on the cooling line (111) to form a flow so that the coolant flowing in through the coolant inlet can flow in one direction along the plurality of vertical cooling lines (111-1) and the plurality of horizontal cooling lines (111-2).

[0079] Referring to Fig. 7, a cooling water inlet for receiving cooling water supplied from the second body part (120) and a cooling water outlet for discharging cooling water after cooling are arranged on the first body part (110). The cooling water flowing into the cooling line (111) through the cooling water inlet cools the entire area of ​​the first body part (110) along the cooling line (111) and is then discharged again through the cooling water outlet. As this process is continuously repeated, the shoe block located closest to the high-temperature steel is smoothly cooled.

[0080]

[0081] Figure 8 is a drawing showing the second body part (120) in more detail.

[0082] Referring to Fig. 8, the second body part (120) is coupled to the upper side of the first body part (110), and one side can be bolted to the lower side of the head block of the scarfing device. The second body part (120) can be fixed to the first body part (110) through a plurality of bolt connections, and when a problem occurs in the first body part (110), the bolts can be released to replace only the first body part (110) from the second body part (120), and the second body part (120) can be used semi-permanently, thereby reducing costs. In addition, a plurality of protrusion receiving grooves (121) can be formed on the lower surface of the second body part (120) to insert a plurality of fixing protrusions (112) protruding from the upper side of the first body part (110) as described above. Accordingly, with a plurality of fixing protrusions (112) inserted into a plurality of protrusion receiving grooves (121), the first and second body parts (110, 120) can be bolted together using a plurality of bolts to form a more firmly and tightly coupled joint.

[0083] In addition, in one embodiment, a support portion (122) is provided on the lower side of the second body portion (120) to support the rear surface of the first body portion (110). The support portion (122) can serve to support the rear surface of the first body portion (110) during the scarfing process of the scarfing device so that the first body portion (110) is firmly fixed without being pushed.

[0084]

[0085] The leak prevention plug (130) can be bolted to the previously described processing hole (110a) to seal the coolant formed inside the first body part (110) so that it does not leak out of the first body part (110). This will be examined in more detail as follows.

[0086] Fig. 9 is a drawing showing the leak prevention plug (130) in more detail, and Fig. 10 is a cross-sectional view showing the state in which the leak prevention plug (130) is coupled to the processing hole (110a) in more detail.

[0087] Referring to FIGS. 9 and 10, the leak-prevention plug (130) may largely include a body portion (131), a fastening head (132), a raised screw thread portion (133), first and second sealing grooves (134, 135), and first and second sealing members (136, 137). More specifically, the body portion (131) is fastened to the previously described machined hole (110a), and may be formed in a shape corresponding to the inner shape of the machined hole (110a). The fastening head (132) may be positioned so as to face one end of the body portion (131), more specifically, the outer direction of the first body portion (110). At this time, a contact surface (132-1) may be formed on the side of the fastening head (132) to be in close contact with a device (e.g., a spanner) for rotating the body part (131) clockwise or counterclockwise. For example, by using a device such as a monkey wrench or a vice to bite the fastening head (132) and turn it clockwise or counterclockwise, the body part (131) is tightened or loosened in the processing hole (110a).

[0088] In addition, in one embodiment, the plug that is fastened to the existing shoe block has a wrench groove engraved on the head portion for loosening or tightening using a polygonal wrench (e.g., an allen wrench, etc.). Therefore, if the plug is turned with strong force or the wrench and the wrench groove do not exactly align, the wrench groove may be finished or chipped, making it difficult to tighten the plug strongly. In addition, the plug that is fastened to the existing shoe block may have a head portion that protrudes from the side of the shoe block, which may cause interference with other equipment within the scarfing device.

[0089] However, in the case of the fastening head (132) of the leak-prevention plug (130) according to the present invention, since the device for rotation can be engaged with the contact surface (132-1) without a separate wrench groove and turned, the leak-prevention plug (130) can be strongly tightened without being worn or chipped, thereby improving the adhesion and sealing power. In addition, the fastening head (132) according to the present invention can be cut from the body portion (131) through a separate cutting process after being fastened to the processing hole (110a). This will be described as follows.

[0090] Figure 11 is a drawing showing a state in which the body part (131) is fastened to the processing hole (110a) and then the fastening head (132) is cut through cutting processing.

[0091] Referring to Fig. 11, the fastening head (132) according to the present invention can be cut through cutting processing after the body portion (131) is fastened to the processing hole (110a). Accordingly, the first body portion (110) and the leak-prevention plug (130) themselves are formed into a flat surface, eliminating any portions protruding to the side, thereby providing the advantage of preventing interference with other equipment within the scarfing device.

[0092] In addition, in one embodiment, a positive thread portion (133) may be formed on the body portion (131) to allow the body portion (131) to be strongly and firmly fixed to the machined hole (110a) through a bolt connection with the negative thread portion (110a-1) described above. The positive thread portion (133) may be formed along the outer circumferential surface of the body portion (131) in a shape that matches the negative thread portion (110a-1) so that the positive thread portion (133) may be perfectly bolt-connected to the negative thread portion (110a-1) formed on the first body portion (110) without any gaps. In addition, the formed length of the positive thread portion (133) may be formed to have a length corresponding to the depth of the negative thread portion (110a-1).

[0093] In addition, a first sealing groove (134) may be formed inwardly along the center of the body portion (131) so that a first sealing member (136) may be inserted and positioned inwardly along the periphery. More specifically, the first sealing member (136) may refer to an O-ring that prevents high-pressure cooling water in the cooling line (111) from leaking through a minute gap between the first processing passage (110a-2) and the body portion (131). At this time, the first sealing groove (134) is formed inwardly along the center of the body portion (131) so that the first sealing member (136) can be tightly accommodated in this first sealing groove (134). When the first sealing member (136) is bolted to the concave screw thread portion (133) and the concave screw thread portion (110a-1) so that the body portion (131) is fastened toward the inside of the processing hole (110a), it is perfectly fitted into the first processing passage (110a-2) without any gaps, thereby filling in any minute gaps between the first processing passage (110a-2) and the body portion (131). Accordingly, the high-pressure cooling water in the cooling line (111) is prevented from leaking to the outside.

[0094] Meanwhile, in the present invention, leakage can be prevented in a double manner through a second sealing member (137) in addition to the first sealing member (136).

[0095] In this regard, the end of the body part (131) can be inserted to the innermost side of the processing hole (110a) and positioned as close as possible to the cooling line (111). At this time, a second sealing groove (135) may be formed inwardly along the circumference of the end of the body part (131) so that a second sealing member (137) may be inserted and positioned therein. More specifically, the second sealing member (137) may mean an O-ring that prevents high-pressure cooling water in the cooling line (111) from leaking through a slight gap between the second processing passage (110a-3) and the end of the body part (131). At this time, the second sealing groove (135) is formed inwardly along the circumference of the end of the body part (131), and the second sealing member (137) can be tightly accommodated in this second sealing groove (135). When the second sealing member (137) is bolted to the concave screw thread portion (133) and the concave screw thread portion (110a-1) so that the end of the body portion (131) is fastened toward the inside of the second processing passage (110a-3), it is perfectly fitted into the second processing passage (110a-3) without any gaps, thereby filling in a small gap between the second processing passage (110a-3) and the end of the body portion (131). Accordingly, the high-pressure cooling water in the cooling line (111) can be primarily sealed by the second sealing member (137), and secondarily sealed by the first sealing member (136), thereby doubly preventing leakage.

[0096]

[0097] Although the present invention has been described above with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and changes may be made to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below.

[0098] According to the present invention, by changing the arrangement of the cooling line inside the shoe block coupled to the scarfing device, it is possible to minimize deformation caused by high heat and friction, and the present invention is a technology that can be widely used in the steel industry to realize its practical and economic value.

Claims

1. A first body part (110) that adheres to the steel surface during the scarfing process and has a cooling line (111) formed on the inside; A second body part (120) arranged on the upper side of the first body part (110) and having one side joined to the lower side of the head block of the scarfing device; and A plurality of leak prevention plugs (130) for closing a plurality of processing holes (110a) formed inside the first body part (110) for processing the cooling line (111); A detachable shoe block with enhanced leak-proof performance.

2. In paragraph 1, The above processing hole (110a) is A concave screw thread portion (110a-1) formed along the inner surface to a predetermined depth; A first processing passage (110a-2) formed at a predetermined depth inward from the above-mentioned negative screw thread portion (110a-1), and having an end diameter that gradually narrows as it goes inward; and A second processing passage (110a-3) extending from the first processing passage (110a-2) and connected to the cooling line (111); A detachable shoe block with enhanced leak-proof performance.

3. In paragraph 2, The above cooling line (111) is Based on the forward and backward movement direction of the scarfing device, a plurality of vertical cooling lines (111-1) processed inward from the rear of the first body part (110); and It includes a plurality of horizontal cooling lines (111-2) processed inward from the side of the first body part (110) based on the forward and backward movement direction of the scarfing device; The above plurality of vertical cooling lines (111-1) and the above plurality of horizontal cooling lines (111-2) are formed to be connected to each other inside the above cooling line (111), The processing hole (110a) is formed at the end of each of the plurality of vertical cooling lines (111-1) and the plurality of horizontal cooling lines (111-2). A detachable shoe block with enhanced leak-proof performance.

4. In paragraph 1, The first and second body parts (110, 120) are formed in a structure that is separable from each other, and the first and second body parts (1110, 120) are bolt-connected to each other through a plurality of bolts inserted from the upper side to the lower side of the second body part (120). A detachable shoe block with enhanced leak-proof performance.

5. In paragraph 1, On the upper side of the first body part (110), a plurality of fixing protrusions (112) are formed to protrude and are inserted into the inside of the second body part (120). On the lower side of the second body part (120), a plurality of protrusion receiving grooves (121) for inserting the plurality of fixing protrusions (112) are engraved. A detachable shoe block with enhanced leak-proof performance.

6. In paragraph 1, On the lower side of the second body part (120), In the scarfing process of the above scarfing device, a support part (122) that supports the rear side of the first body part (110) is provided. A detachable shoe block with enhanced leak-proof performance.

7. In paragraph 2, The above leak prevention plug (130) is A body part (131) that is fastened to the above processing hole (110a) and has a shape corresponding to the inner shape of the above processing hole (110a); A fastening head (132) formed on one end of the above body part (131); A positive threaded portion (133) formed on the body portion (131) and formed along the outer circumference to be bolt-connected with the negative threaded portion (110a-1); A first sealing groove (134) formed inwardly along the circumference from the center of the body portion (131); A second sealing groove (135) formed inwardly along the circumference at the end of the above body portion (131); A first ring-shaped sealing member (136) arranged in the first sealing groove (134); and A second sealing member (137) having a ring shape and arranged in the second sealing groove (136); A detachable shoe block with enhanced leak-proof performance.

8. In paragraph 7, On the side of the above fastening head (132), A contact surface (132-1) is formed to be in contact with a spanner that rotates the body part (131) clockwise or counterclockwise. A detachable shoe block with enhanced leak-proof performance.

9. In paragraph 7, The above fastening head (132) is After the above body part (131) is fastened to the above processing hole (110a), it is cut from the body part (131) through cutting processing. A detachable shoe block with enhanced leak-proof performance.

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