Locking device for electrode transfer trolley and electrode transfer trolley including the locking device

Abstract

The present invention relates to a locking device for an electrode transfer trolley and an electrode transfer trolley comprising the locking device. According to the present invention, a large roll of an electrode substrate can be easily transferred and separation of the large roll during the transfer process can be prevented.

Description

Technical Field

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2020-0161975, filed on November 27, 2020, which is hereby incorporated by reference in its entirety.

[0002] The present invention relates to a locking device for an electrode transfer trolley and the electrode transfer trolley comprising the locking device. Background Art

[0003] Generally, an electrode substrate of a secondary battery is stored in the form of a large roll wound on a bobbin, and the process includes winding the electrode substrate on the bobbin, transferring the large roll wound on the bobbin to a cart, and transferring the large roll.

[0004] In particular, an electrode transfer carriage is used to transfer a large roll of electrode substrate.

[0005] Figure 1 Schematic diagram showing a conventional electrode transfer trolley. Figure 1 A conventional electrode transfer cart 10 includes a protruding mounting arm 11 for mounting a large roll, and a "U-shaped" block 12 on which the roll's reel is mounted. Typically, the roll's reel is mounted on the U-shaped block 12 and transferred. However, safety accidents often occur due to the roll's vertical or horizontal load imbalance, causing the reel to separate from the U-shaped block 12.

[0006] Therefore, there is a need for a locking device for an electrode transfer cart that can easily transfer a large roll of an electrode substrate and prevent the large roll from separating during the transfer process, and an electrode transfer cart including the locking device. Summary of the Invention

[0007] Technical issues

[0008] In order to solve the above problems of conventional technology, the present invention provides a locking device for an electrode transfer cart that can easily transfer a large roll of an electrode substrate and prevent the large roll from separating during the transfer process, and an electrode transfer cart including the locking device.

[0009] Technical Solution

[0010] The present invention provides a locking device for an electrode transfer trolley and an electrode transfer trolley including the locking device. In one example, the locking device for an electrode transfer trolley according to the present invention includes: a lower block having a mounting groove on which the central axis of a large roll is mounted, the mounting groove including an open surface that is open in one direction; an upper block, the upper block covering the open surface of the lower block in a state in which the central axis of the large roll has been mounted, and one side of the upper block is fixed to the lower block by a hinge; and a locking handle, the locking handle being formed on the opposite side of the hinge fixing side of the upper block and including a fixing pin, the fixing pin being switched between a locked state and an open state by being inserted into or separated from a locking groove formed at a position corresponding to the lower block.

[0011] In a more specific example, the lower block is a U-shaped lower block having an upwardly open mounting groove. In addition, the upper block has a structure covering the upper portion of the U-shaped lower block when the central axis of the large roll is mounted, and has one side hingedly fixed to the lower block.

[0012] For example, the locking device for the electrode transfer trolley according to the present invention includes: a lower block having a mounting groove on which the central axis of the large roll is mounted; an upper block, which covers the upper part of the lower block when the central axis of the large roll has been mounted, and one side of the upper block is fixed to the lower block by a hinge; and a locking handle, which is formed on the opposite side of the hinge fixing side of the upper block and includes a fixing pin, which switches between a locked state and an open state by being inserted into or separated from a locking groove formed at a position corresponding to the lower block.

[0013] In one example, the locking device further includes an anti-slip pad located on an inner surface of the mounting groove of the lower block.

[0014] In a specific example, the mounting groove of the lower block has a groove structure formed by continuously connecting a first lower inclined surface, a horizontal surface, and a second upper inclined surface in a direction from one side to the other side. In this case, the lower inner surface of the upper block has a horizontal surface structure.

[0015] In another example, the locking device further includes a buffer pad located on the lower inner surface of the upper block.

[0016] In one example, when the fixing pin is inserted into the locking groove and pressed by the elastic body, the locking handle is in a locked state, and when the fixing pin is pulled out of the locking groove by pulling the fixing pin in a direction opposite to the pressing direction of the elastic body, the locking handle is in an open state.

[0017] Furthermore, the position of the hinge fastening the lower block to the upper block can be changed in at least one of vertical, horizontal, and inclined directions by spiral rotation. In a specific example, the diameter of the central axis of the large roll is in the range of 5 to 10 inches.

[0018] Furthermore, the present invention provides an electrode transfer trolley having the above locking device.

[0019] In one example, the electrode transfer cart further includes a protruding mounting arm for mounting a large roll, and the locking device is fastened to the mounting arm. In this case, the large roll to be transferred may have a structure in which a metal foil for forming an electrode current collector is wound.

[0020] The large roll as the transfer target may have a structure in which an electrode substrate having a structure in which an electrode mixture layer is coated on an electrode current collector is wound.

[0021] Beneficial effects

[0022] According to the locking device for an electrode transfer trolley and the electrode transfer trolley including the locking device of the present invention, a large roll of an electrode substrate can be easily transferred and separation of the large roll can be prevented during the transfer process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram showing a conventional electrode transfer cart.

[0024] Figure 2 is a schematic diagram illustrating a locking device for an electrode transfer cart according to one embodiment of the present invention.

[0025] Figure 3 yes Figure 2 A right side view of the locking device for the electrode transfer cart shown in FIG.

[0026] Figure 4 1 is a schematic diagram showing an open form of a locking device for an electrode transfer cart according to one embodiment of the present invention.

[0027] Figure 5 is a schematic diagram illustrating a locking device for an electrode transfer cart according to another embodiment of the present invention.

[0028] Figure 6 FIG. 1 is a schematic diagram illustrating a locking device for an electrode transfer cart according to yet another embodiment of the present invention.

[0029] Figure 7 is a schematic diagram showing an electrode transfer cart according to one embodiment of the present invention.

[0030] Figure 8: is a schematic diagram showing a state where a large roll is mounted on the electrode transfer cart according to one embodiment of the present invention. DETAILED DESCRIPTION

[0031] Since the present invention allows for various changes and multiple embodiments, specific embodiments will be shown in the drawings and described in detail herein. However, this is not intended to limit the invention to the specific form disclosed, and it should be understood to include all changes, equivalents and substitutions included within the spirit and scope of the invention.

[0032] In the present application, it should be understood that terms such as "including" or "having" are intended to indicate that the described features, quantities, steps, operations, components, parts or combinations thereof are present in the present application, and they do not preclude the possibility of the presence or addition of one or more other features or quantities, steps, operations, components, parts or combinations thereof. In addition, when a part such as a layer, film, region, plate, etc. is referred to as being "on" another part, this includes not only the case where the part is "directly" "on" the other part, but also the case where other parts are inserted between the part and the other part. On the other hand, when a part such as a layer, film, region, plate, etc. is referred to as being "under" another part, this includes not only the case where the part is "directly" "under" the other part, but also the case where other parts are inserted between the part and the other part. In addition, being set "on" in the present application may include being set at the bottom as well as the top.

[0033] The present invention relates to a locking device for an electrode transfer trolley and the electrode transfer trolley comprising the locking device.

[0034] As described above, usually, in order to transfer a large roll of an electrode substrate, the reel of the large roll is set on a U-shaped block of a transfer trolley and then transferred. However, safety accidents often occur because the reel is separated from the U-shaped block due to imbalance of the vertical load or horizontal load of the large roll. Therefore, the inventors of the present invention have invented a locking device for an electrode transfer trolley that can easily transfer a large roll of an electrode substrate and prevent the large roll from separating during the transfer process, and an electrode transfer trolley including the locking device. Specifically, the locking device for the electrode transfer trolley of the present invention can prevent the large roll from separating during the transfer process by including a lower block on which the central axis of the large roll is mounted, an upper block hingedly fixed to the lower block, and a locking handle that fixes the lower block and the upper block.

[0035] Hereinafter, a locking device for an electrode transfer cart and an electrode transfer cart including the locking device according to the present invention will be described in detail.

[0036] In one example, the present invention relates to a locking device for an electrode transfer trolley, the locking device comprising: a U-shaped lower block, the U-shaped lower block having a mounting groove on which the central axis of a large roll is mounted; an upper block, the upper block covering the upper portion of the U-shaped lower block when the central axis of the large roll has been mounted, and one side of the upper block is fixed to the U-shaped lower block by a hinge; and a locking handle, the locking handle being formed on the opposite side of the hinge-fixing side of the upper block and including a fixing pin, which switches between a locked state and an open state by being inserted into or separated from a locking groove formed at a position corresponding to the U-shaped lower block.

[0037] In a more specific example, the locking device for the electrode transfer trolley according to the present invention includes: a lower block, the lower block having a mounting groove on which the central axis of the large roll is mounted; an upper block, the upper block covers the upper portion of the lower block when the central axis of the large roll has been mounted, and one side of the upper block is fixed to the lower block by a hinge; and a locking handle, the locking handle is formed on the opposite side of the hinge fixing side of the upper block and includes a fixing pin, which switches between a locked state and an open state by being inserted into or separated from a locking groove formed at a position corresponding to the lower block.

[0038] In one example, the locking device for the electrode transfer trolley of the present invention is fastened to the mounting arm of the electrode transfer trolley during the process of the electrode transfer trolley transferring a large roll. In particular, the electrode transfer trolley is a device for transferring a large roll of an electrode substrate, and the locking device for the electrode transfer trolley is fastened to the mounting arm of the electrode transfer trolley and is used to prevent the large roll of the electrode transfer trolley from separating. In a specific example, according to the locking device for the electrode transfer trolley of the present invention, after the central axis of the large roll is mounted on the lower block, the upper part of the lower block is covered with the upper block, and the fixing pin is inserted into the locking groove by using the locking handle. In this way, the locking device can be firmly fixed.

[0039] As mentioned above, the jumbo roll is a large roll of an electrode substrate. Specifically, the jumbo roll has a structure in which an electrode substrate coated with an electrode mixture layer or a metal foil used to form an electrode current collector is wound. In a specific example, the jumbo roll can be an electrode current collector made of copper or aluminum, etc., or can be an electrode substrate produced by applying a positive electrode active material or a negative electrode active material to an electrode current collector. In addition, the central axis C of the jumbo roll refers to the bobbin used to wind the metal foil or electrode substrate.

[0040] In one example, the mounting groove of the lower block has a groove structure formed by continuously connecting a first lower inclined surface, a horizontal surface, and a second upper inclined surface in a direction from one side to the other. In a specific example, the first lower inclined surface, the horizontal surface, and the second upper inclined surface are used to more easily set the central axis of the large roll.

[0041] In another example, the locking device further includes an anti-slip pad located on the inner surface of the mounting groove of the lower block. Specifically, the anti-slip pad can be made of a soft synthetic resin, and preferably made of a material that can exert friction on the central axis of the large roll mounted on the lower block. For example, the anti-slip pad can be a nylon pad.

[0042] In one specific example, the anti-slip pad can be made of MC nylon. Furthermore, because MC nylon has a higher molecular weight and crystallinity than typical nylon 6, it exhibits superior self-lubrication, wear resistance, chemical resistance, and corrosion resistance. Therefore, MC nylon is suitable for use as an anti-slip pad. The locking device for the electrode transfer cart according to the present invention includes the aforementioned anti-slip pad in the lower block, thereby preventing the large coil mounted on the lower block from separating.

[0043] In one example, the lower inner surface of the upper block has a horizontal surface. In a specific example, the lower inner surface of the upper block contacts the central axis of the large roll, and the lower inner surface of the upper block can prevent the large roll from separating from the lower block by pressing the central axis of the large roll disposed on the lower block. In particular, during the transfer of the large roll, the structure of the lower and upper blocks prevents the front, rear, upper, and lower surfaces of the central axis of the large roll from shaking, thereby preventing the large roll from separating.

[0044] In another example, the locking device may further include a cushioning pad located on the lower inner surface of the upper block. Specifically, the cushioning pad is preferably made of a material capable of absorbing shock and vibration. The cushioning pad may be a rubber pad, a polyurethane pad, or a polyurethane foam pad. Specifically, the polyurethane pad is made of a flexible synthetic fiber that is moisture-resistant, acid-resistant, and waterproof. In particular, by including the polyurethane pad on the lower inner surface of the upper block, the polyurethane pad absorbs the central axis of the large roll when the transfer cart moves, thereby eliminating vibration.

[0045] In yet another example, the inner surface of the mounting groove of the lower block includes an anti-slip pad, and the inner surface of the upper block includes a cushioning pad. In this case, the locking device for the electrode transfer cart according to the present invention can prevent the large coil from separating and absorb vibrations, etc. This allows for more stable transfer of the large coil.

[0046] In one example, the lower block and the upper block are secured to each other via a hinge. In a specific example, the hinge may be mounted in an area connected to a mounting arm of the transfer cart, and the locking device may be opened and closed by moving the upper block about an axis of the hinge. In this case, the position of the hinge securing the lower block to the upper block can be adjusted in at least one of a vertical direction, a horizontal direction, and an inclined direction by helical rotation.

[0047] In one example, when the fixing pin is inserted into the locking groove and pressed by the elastic body, the locking handle is in a locked state.

[0048] In addition, when the fixing pin is pulled out of the locking groove by pulling the fixing pin in the direction opposite to the pressing direction of the elastic body, the locking handle is in an open state. In particular, the upper block and the lower block can be firmly fixed by inserting the fixing pin connected to the upper block into the locking groove of the lower block.

[0049] The locking handle can easily fix the upper block and the lower block with one click, and can form a state in which the upper block is opened from the lower block with one click.

[0050] Furthermore, the present invention provides an electrode transfer trolley having the above locking device.

[0051] In one example, the electrode transfer cart further includes a protruding mounting arm for mounting the large coil, and a locking device is secured to the mounting arm. In a specific example, the electrode transfer cart according to the present invention further includes a protruding mounting arm for mounting the large coil, and a locking device is secured to the mounting arm. A pair of mounting arms are provided to mount the large coil from both sides, and the pair of mounting arms protrude in directions pointing toward each other and may protrude in parallel directions. Furthermore, the central axis of the large coil may be secured to a locking device secured to each of the pair of mounting arms.

[0052] In one example, the electrode transfer cart includes a handle. In this case, the handle may be formed on the side opposite to the direction in which the mounting arm protrudes. Furthermore, the electrode transfer cart may include a support member that protrudes in the same direction as the mounting arm protrudes. The support member supports the electrode transfer cart 40, thereby allowing the cart to stand upright when the cart is not moving.

[0053] In one example, the electrode transfer cart has a lever structure with wheels that rotate around an axis of rotation. When the handle of the electrode transfer cart is turned downward, the mounting arm tilts forward relative to the wheel axle. This allows users to easily transfer large rolls with minimal force.

[0054] In one example, the large roll to be transferred has a structure in which a metal foil used to form an electrode current collector is wound. Alternatively, the large roll to be transferred has a structure in which an electrode substrate with an electrode mixture layer coated on the electrode current collector is wound. In a specific example, the large roll can be an electrode current collector made of copper or aluminum, etc., or can be an electrode substrate produced by applying a positive electrode active material or a negative electrode active material to the electrode current collector. However, the present invention is not limited to this.

[0055] Furthermore, since the electrode transfer cart according to the present invention includes a locking device, separation of the large coil can be prevented.

[0056] Detailed Description of the Preferred Embodiments

[0057] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. When describing the drawings, similar reference numerals are used for similar elements. In the drawings, the scale of the structure is shown in an enlarged scale for the clarity of the present invention. Terms such as "first" and "second" may be used to describe the various components, but these components should not be limited by these terms. These terms are only used to distinguish the components from each other. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component without departing from the scope of the present invention. The singular includes the plural unless the context clearly indicates otherwise.

[0058] (First embodiment)

[0059] Figure 2 is a schematic diagram showing a locking device for an electrode transfer trolley according to one embodiment of the present invention, Figure 3 yes Figure 2 A right side view of the locking device for the electrode transfer trolley shown in FIG. Figure 4 1 is a schematic diagram showing an open form of a locking device for an electrode transfer cart according to one embodiment of the present invention.

[0060] Reference Figures 2 to 4 , a locking device 100 for an electrode transfer trolley according to the present invention includes a lower block 110, an upper block 120, and a locking handle 130. More specifically, the locking device 100 for the electrode transfer trolley includes: a lower block 110 having a mounting groove 111 on which the center axis C of the large roll is mounted; an upper block 120 having a structure that covers an open surface of the lower block 110 in a state in which the center axis C of the large roll has been mounted, and one side of the upper block 120 is fixed to the lower block 110 by a hinge 140; and a locking handle 130, the locking handle 130 being formed on an opposite side of the upper block 120 to the side to which the hinge 140 is fixed and including a fixing pin 131 that switches between a locked state and an open state by being inserted into or separated from a locking groove 112 formed at a position corresponding to the lower block 110.

[0061] In particular, according to the locking device 100 for the electrode transfer cart of the present invention, after the central axis C of the large roll is mounted on the lower block 110, the upper portion of the lower block 110 is covered with the upper block 120, and the fixing pin 131 is inserted into the locking groove by using the locking handle 130. In this way, the locking device 100 can be firmly fixed.

[0062] The large roll has a structure in which a metal foil for forming an electrode current collector or an electrode substrate coated with an electrode mixture layer is wound. The central axis C of the large roll refers to a bobbin for winding the metal foil or the electrode substrate.

[0063] The mounting groove 111 of the lower block 110 has a groove structure formed by continuously connecting a first lower inclined surface 1111, a horizontal surface 1112, and a second upper inclined surface 1113 in a side-to-side direction. The first lower inclined surface 1111, the horizontal surface 1112, and the second upper inclined surface 1113 are used to more easily set the center axis C of the large roll. The figure shows that the lower block 110 is a U-shaped lower block including two inclined surfaces and a flat surface, but the present invention is not limited to this example.

[0064] The lower inner surface of the upper block 120 has a horizontal surface. This surface contacts the central axis C of the large roll and, by pressing against the central axis C of the large roll disposed on the lower block 110, prevents the large roll from separating from the lower block 110. In particular, the structure of the lower block 110 and the upper block 120 prevents the front, rear, upper, and lower surfaces of the central axis C of the large roll from shaking during transfer, thereby preventing the large roll from separating.

[0065] The lower block 110 and the upper block 120 are fixed to each other by a hinge 140. Specifically, the hinge 140 may be installed in an area connected to the mounting arm of the transfer cart, and the locking device 100 may be opened and closed by moving the upper block 120 based on the axis of the hinge 140. Specifically, the position of the hinge 140 that fastens the lower block 110 to the upper block 120 can be changed in at least one direction among the vertical direction, the horizontal direction, and the inclined direction by spiral rotation.

[0066] Furthermore, when the fixing pin 131 is inserted into the locking groove 112 and pressed by the elastic body, the locking handle 130 is locked. When the fixing pin 131 is pulled out of the locking groove 112 by pulling the fixing pin 131 in the direction opposite to the pressing direction of the elastic body, the locking handle 130 is opened. In particular, by inserting the fixing pin 131 connected to the upper block 120 into the locking groove 112 of the lower block 110, the upper block 120 and the lower block 110 can be securely fixed.

[0067] The locking handle 130 can easily fix the upper block 120 and the lower block 110 with one click, and can form a state in which the upper block 120 is opened from the lower block 110 with one click.

[0068] (Second embodiment)

[0069] Figure 5 Schematic diagram showing a locking device for an electrode transfer trolley according to another embodiment of the present invention. Figure 5The locking device 200 for the electrode transfer trolley includes: a lower block 210, the lower block 210 has a mounting groove 211 on which the center axis C of the large roll is mounted; an upper block 220, the upper block 220 has a structure that covers the open surface of the lower block 210 when the center axis C of the large roll has been installed, and one side of the upper block 220 is fixed to the lower block 210 by a hinge 240; and a locking handle 230, the locking handle 230 is formed on the side of the upper block 220 opposite to the side fixed by the hinge 240 and includes a fixing pin 231, which switches between a locked state and an open state by being inserted into or separated from a locking groove 212 formed at a position corresponding to the lower block 210.

[0070] At this time, an anti-skid pad 213 is included on the inner surface of the mounting groove 211 of the lower block 210. Specifically, the anti-skid pad 213 is a nylon pad. More specifically, the anti-skid pad 213 is made of MC nylon. Because MC nylon has a higher molecular weight and crystallinity than general nylon 6, it has excellent self-lubrication, wear resistance, chemical resistance, and corrosion resistance.

[0071] The separation of the large roll mounted on the lower block can be prevented by including the above-mentioned anti-slip pad in the lower block. Since each component has been described above, a detailed description of each component will be omitted here.

[0072] (Third embodiment)

[0073] Figure 6 Schematic diagram showing a locking device for an electrode transfer trolley according to another embodiment of the present invention. Figure 6 The locking device 300 for the electrode transfer trolley includes: a lower block 310, the lower block 310 has a mounting groove 311 on which the central axis C of the large roll is mounted; an upper block 320, the upper block 320 has a structure that covers the open surface of the lower block 310 when the central axis C of the large roll has been mounted, and one side of the upper block 320 is fixed to the lower block 310 by a hinge 340; and a locking handle 330, the locking handle 330 is formed on the side of the upper block 320 opposite to the side fixed by the hinge 340 and includes a fixing pin 331, which switches between a locked state and an open state by being inserted into or separated from a locking groove 312 formed at a position corresponding to the lower block 310.

[0074] At this time, a cushion pad 321 is included on the lower inner surface of the upper block 320. Specifically, the cushion pad 321 is a polyurethane pad. Specifically, the polyurethane pad is made of a flexible synthetic fiber that is moisture-resistant, acid-resistant, and waterproof. In particular, by including the polyurethane pad on the lower inner surface of the upper block 320, the polyurethane pad absorbs the central axis C of the large roll when the transfer cart moves, thereby eliminating vibration.

[0075] In addition, an anti-skid pad 313 is included on the inner surface of the mounting groove 311 of the lower block 310. Specifically, the anti-skid pad 313 is a nylon pad. Since each component has been described above, a detailed description of each component will be omitted here.

[0076] (Fourth embodiment)

[0077] Figure 7 is a schematic diagram showing an electrode transfer trolley according to one embodiment of the present invention, Figure 8 : is a schematic diagram showing a state where a large roll is mounted on the electrode transfer cart according to one embodiment of the present invention.

[0078] Reference Figure 7 and Figure 8 The electrode transfer cart 40 according to the present invention includes a locking device 400. Specifically, the electrode transfer cart 40 according to the present invention further includes a protruding mounting arm 41 for mounting a large coil, and the locking device 400 is fastened to the mounting arm 41. Furthermore, a pair of mounting arms 41 are provided to hold both sides of the large coil. Furthermore, the central axis C of the large coil is mounted on the locking device 400 fastened to each mounting arm of the pair of mounting arms 41.

[0079] The electrode transfer trolley 40 includes a handle 42. The handle 42 is formed on a side opposite to the direction in which the mounting arm 41 protrudes. In addition, the electrode transfer trolley 40 may include a support member 43 that protrudes in the same direction as the direction in which the mounting arm protrudes. The support member 43 supports the electrode transfer trolley 40 so that the electrode transfer trolley 40 stands upright when the electrode transfer trolley 40 is not moving. In addition, the electrode transfer trolley 40 has a lever structure in which wheels 44 rotate around a rotation axis. When the handle of the electrode transfer trolley 40 is rotated downward, the mounting arm tilts to the front side with the wheel axle of the wheel 44 as a reference. In addition, the user can easily transfer a large roll with very little force.

[0080] In the present invention, the large roll to be transferred has a structure in which a metal foil for forming an electrode current collector is wound. Alternatively, the large roll to be transferred has a structure in which an electrode substrate with an electrode mixture layer coated on the electrode current collector is wound. However, the present invention is not limited to this. Since each component has been described above, a detailed description of each component will be omitted here.

[0081] Furthermore, since the electrode transfer cart according to the present invention includes a locking device, separation of the large coil can be prevented.

[0082] Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, it will be appreciated that various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the invention as set forth in the following claims.

[0083] Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

[0084] [Explanation of Reference Numbers]

[0085] 10, 40: Electrode transfer trolley

[0086] 11, 41: Mounting arm

[0087] 42: handle

[0088] 43: Support

[0089] 100, 200, 300, 400: Locking device for electrode transfer trolley

[0090] 110, 210, 310: next block

[0091] 111, 211, 311: Installation slot

[0092] 1111: First downslope

[0093] 1112: Horizontal plane

[0094] 1113: Second upper slope

[0095] 112, 212, 312: Locking slot

[0096] 213, 313: Anti-slip mat

[0097] 120, 220, 320: upper block

[0098] 321: cushion

[0099] 130, 230, 330: Locking handle

[0100] 131, 231, 331: Fixed pin

[0101] 140, 240, 340: hinge

[0102] C: The central axis of the large scroll.

Claims

1. A locking device for an electrode transfer trolley, the locking device comprising: a lower block having a mounting groove on which a central axis of the large roll is mounted, the mounting groove including an open surface open in one direction; an upper block covering the open surface of the lower block in a state where the central axis of the large roll has been installed, and one side of the upper block is fixed to the lower block by a hinge; and a locking handle formed on the side opposite to the hinge fixing side of the upper block and including a fixing pin that switches between a locked state and an open state by being inserted into or separated from a locking groove formed at a position corresponding to the lower block, wherein the lower block is a U-shaped lower block having a mounting groove opening in an upward direction, and the opening of the U-shaped lower block is upward, wherein the upper block covers the upper portion of the U-shaped lower block in a state in which the central axis of the large roll has been installed, and the one side of the upper block is fixed to the lower block by the hinge, The mounting groove of the lower block has a groove structure formed by continuously connecting a first lower inclined surface, a horizontal surface, and a second upper inclined surface in a direction from one side to the other side. 2 . The locking device according to claim 1 , further comprising an anti-slip pad located on an inner surface of the mounting groove of the lower block.

3. The locking device according to claim 1, wherein a lower inner surface of the upper block has a horizontal plane structure.

4. The locking device according to claim 1, further comprising a buffer pad located on a lower inner surface of the upper block.

5. The locking device according to claim 1, wherein when the fixing pin is inserted into the locking groove and pressed by the elastic body, the locking handle is in a locked state, and When the fixing pin is pulled out of the locking groove by pulling the fixing pin in a direction opposite to the pressing direction of the elastic body, the locking handle is in an open state. 6 . The locking device according to claim 1 , wherein a position of the hinge fastening the lower block to the upper block is varied in at least one direction among a vertical direction, a horizontal direction, and an oblique direction by screw rotation.

7. The locking device of claim 1, wherein the diameter of the central axis of the jumbo roll is in the range of 5 to 10 inches. 8 . An electrode transfer cart comprising the locking device according to claim 1 .

9. The electrode transfer trolley according to claim 8, further comprising a protruding mounting arm for mounting a large roll, wherein the locking device is fastened to the mounting arm. 10 . The electrode transfer cart according to claim 8 , wherein the large roll to be transferred has a structure in which a metal foil for forming an electrode current collector is wound. 11 . The electrode transfer cart according to claim 8 , wherein the large roll to be transferred has a structure in which an electrode substrate having a structure in which an electrode mixture layer is coated on an electrode current collector is wound.

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