Hoist

Abstract

A hoist according to embodiments of the present invention comprises an outer section forming an outer section, a power section disposed in the outer section to provide power, a central gear section connected to the power section to distribute power, a one-sided gear section connected to one side of the central gear section to transmit power, a one-sided rotating section connected to both sides of the one-sided gear section to be rotatable, a one-sided moving section configured to move up and down according to the rotation of the one-sided rotating section to move an object to be worked on, a other-sided gear section connected to the other side of the central gear section to transmit power, a other-sided rotating section connected to both sides of the other-sided gear section to be rotatable, and a other-sided moving section configured to move up and down according to the rotation of the other-sided rotating section to move an object to be worked on, wherein the one-sided moving section and the other-sided moving section are bolted together with the object to be worked on. Thus, the power generated from the power unit can be evenly distributed to one side and the other side through the central gear unit to move both sides of the object horizontally at the same time, and the moving unit is bolted to the object to prevent the object from detaching during the lifting operation and to improve the stability of the connection.

Description

Technology Field

[0001] The present invention relates to a hoist. Background Technology

[0002] Generally, a hoist is a mechanical device used to lift or lower heavy objects vertically, and it is widely used in industrial settings for transporting and positioning heavy loads. These hoists are classified into electric or manual types, and they typically utilize chains or wire ropes to move the objects to be transported.

[0003] In particular, in semiconductor manufacturing processes or industries related to vacuum chambers, it is necessary to precisely lift or lower large structures such as chamber covers, buffer covers, and transfer covers. In such working environments, the stability of the connection between the workpiece and the hoist is critical, and personal injury and equipment damage caused by the workpiece detaching or falling during operation must be prevented.

[0004] Referring to Korean Registered Patent No. 10-1355470, etc., conventional hoists have mainly used a method of connecting to an object using a hook or shackle. This method requires a separate eyebolt or lifting lug to be installed on the object, and there were limitations in safety when transporting heavy objects due to the possibility of the hook or shackle itself becoming detached.

[0005] Furthermore, conventional hoists generally feature a configuration that moves the workpiece via a single hoisting section, making it difficult to move heavy objects while maintaining a precise center of gravity and leveling. In particular, for large structures requiring precise leveling, such as chamber covers, supporting the load at only one point caused the workpiece to tilt, posing a problem that made precise placement difficult.

[0006] Furthermore, conventional hoists lacked a function to detect overheating of the power unit and automatically shut off operation, so components such as the motor would overheat during prolonged use, causing malfunctions or posing a risk of fire.

[0007] Therefore, there is an increasing need for a new type of hoist that has excellent coupling stability with the workpiece, can move the workpiece precisely horizontally through multiple lifting points, and is equipped with an overheating prevention function. Prior art literature

[0008] Korean Registered Patent No. 10-1355470 The problem to be solved

[0009] Embodiments of the present invention aim to provide a hoist capable of simultaneously moving both sides of an object horizontally by distributing power generated in a power unit equally to one side and the other side through a central gear unit.

[0010] In addition, embodiments of the present invention aim to provide a hoist in which a moving part is bolted to a workpiece to prevent the workpiece from detaching during a lifting operation and to improve the stability of the connection.

[0011] In addition, embodiments of the present invention aim to provide a hoist in which a cover portion covering a moving part can stably fix a moving body portion and protect it from external impact through a magnetic and frictional composite fixing structure.

[0012] In addition, embodiments of the present invention aim to provide a hoist in which a support member elastically supports a power member to absorb vibrations and shocks applied to the power member and stably maintain the position of the power member.

[0013] In addition, embodiments of the present invention aim to provide a hoist in which the supporting member can elastically support the power member in multiple directions through angle adjustment and magnetism.

[0014] In addition, embodiments of the present invention aim to provide a hoist capable of manually transmitting power or selectively blocking the operation of the central gear unit even when the power is cut off through a manual operation unit and an operation cutoff unit.

[0015] In addition, embodiments of the present invention aim to provide a hoist capable of preventing failure and fire caused by overheating of the power unit by the thermal insulation unit detecting overheating of the power unit and physically cutting off the power through the deformation of the bimetal unit. means of solving the problem

[0016] According to embodiments of the present invention, the hoist distributes power generated from the power unit evenly to one side and the other side through the central gear unit, and the one-side moving unit and the other-side moving unit are bolted together with the object to be moved so as to stably move the object horizontally.

[0017] Specifically, the apparatus comprises an exterior portion forming an exterior, a power portion disposed on the exterior portion to provide power, a central gear portion connected to the power portion to distribute power, a one-sided gear portion connected to one side of the central gear portion to transmit power, a one-sided rotating portion connected to both sides of the one-sided gear portion to enable rotation, a one-sided moving portion configured to move up and down according to the rotation of the one-sided rotating portion to move an object to be worked on, a other-sided gear portion connected to the other side of the central gear portion to transmit power, a other-sided rotating portion connected to both sides of the other-sided gear portion to enable rotation, and a other-sided moving portion configured to move up and down according to the rotation of the other-sided rotating portion to move an object to be worked on, wherein the one-sided moving portion and the other-sided moving portion may be bolted together with an object to be worked on.

[0018] Additionally, the above-mentioned one-sided moving part may include a one-sided moving string configured to be wound or unwound by the one-sided rotating part, a one-sided moving main body connected to the one-sided moving string and coupled to a target object, a one-sided moving protrusion formed protruding from both ends of the one-sided moving main body, a one-sided moving through-hole formed through the one-sided moving protrusion and into which a fastening member is inserted, and a one-sided moving performing part disposed at the end of the one-sided moving string and coupled to a target object, and the other-sided moving part may include a other-sided moving string configured to be wound or unwound by the other-sided rotating part, a other-sided moving main body connected to the other-sided moving string and coupled to a target object, a other-sided moving protrusion formed protruding from both ends of the other-sided moving main body, a other-sided moving through-hole formed through the other-sided moving protrusion and into which a fastening member is inserted, and a other-sided moving performing part disposed at the end of the other-sided moving string and coupled to a target object.

[0019] Additionally, the device may further include a cover portion configured to cover the one-sided moving part and the other-sided moving part, wherein the cover portion may include a cover body portion configured to cover the one-sided moving main body portion and forming an exterior, a cover performing portion configured to surround a fastening member inserted into the one-sided moving protrusion portion and the one-sided moving penetration portion, a cover elastic portion configured to be made of an elastic material and configured to be

[0020] Additionally, the device may further include a support member positioned on the exterior portion and configured to support the power member, wherein the support member may include a support main body portion forming the exterior, a plurality of support indentation portions formed in the support main body portion, a support elastic portion positioned on the support indentation portion and configured to be compressible, a support pressure portion positioned on the support indentation portion to face the support elastic portion, a support moving portion connected to the support pressure portion and configured to move the support pressure portion, a support placement portion positioned at the end of the support elastic portion, and a support performing portion connected to the support placement portion and extended at an angle to support the power member.

[0021] Additionally, the support performing part may include a performing main body part forming an exterior, a performing angle part provided at one end of the performing main body part and configured to adjust the angle from the inside of the support arrangement part, a performing magnetic part provided at the other end of the performing main body part to have magnetism, a performing elastic part covering the performing magnetic part and provided with an elastic material to support the power part, and a performing absorption part disposed inside the performing main body part, on which the performing magnetic part is seated and configured to absorb shock.

[0022] Additionally, it further includes a manual operating part connected to the central gear part and configured to be manually operable, and an operation blocking part selectively coupled to the manual operating part to prevent the operation of the central gear part, wherein the operation blocking part may include a blocking main body part forming an exterior, a blocking recess formed by being recessed from the outside to the inside of the blocking main body part, a blocking magnetic part configured to have magnetism at the end of the blocking main body part, and a blocking friction part spaced apart in multiple numbers on the inside of the blocking recess and configured to have a friction coefficient greater than that of the blocking main body part.

[0023] In addition, the device further includes a heat-blocking unit that detects overheating of the power unit and blocks the operation of the power unit, wherein the heat-blocking unit includes a heat-blocking main body portion arranged to surround the outer surface of the power unit, a heat-conducting pad arranged on the inner surface of the heat-blocking main body portion and in close contact with the outer surface of the power unit, a bimetal portion embedded in the heat-blocking main body portion to contact the heat-conducting pad and deformed when the set temperature is exceeded, a heat-blocking switch portion that is pressurized by the deformation of the bimetal portion to physically cut off power to the power unit, and a heat dissipation fin portion arranged on the outer surface of the heat-blocking main body portion to release heat generated from the power unit to the outside, wherein the bimetal portion is arranged in series between the heat-conducting pad and the heat-blocking switch portion and deformed by heat transmitted through the heat-conducting pad to pressurize the heat-blocking switch portion. Effects of the invention

[0024] Embodiments of the present invention can provide a hoist capable of moving both sides of an object horizontally at the same time by distributing power generated from a power unit equally to one side and the other side through a central gear unit.

[0025] In addition, embodiments of the present invention can provide a hoist in which a moving part is bolted to a workpiece to prevent the workpiece from detaching during a lifting operation and to improve the stability of the connection.

[0026] In addition, embodiments of the present invention can provide a hoist in which a cover portion covering a moving part can stably fix a moving body portion and protect it from external impact through a magnetic and frictional composite fixing structure.

[0027] In addition, embodiments of the present invention can provide a hoist in which a support member elastically supports a power member to absorb vibrations and shocks applied to the power member and stably maintain the position of the power member.

[0028] In addition, embodiments of the present invention can provide a hoist in which the supporting member can elastically support the power member in multiple directions through angle adjustment and magnetism.

[0029] In addition, embodiments of the present invention can provide a hoist capable of manually transmitting power or selectively blocking the operation of the central gear unit even when the power is cut off through a manual operation unit and an operation cutoff unit.

[0030] In addition, embodiments of the present invention can provide a hoist that can prevent failure and fire caused by overheating of the power unit by the thermal insulation unit detecting overheating of the power unit and physically cutting off the power through the deformation of the bimetal unit. Brief explanation of the drawing

[0031] FIG. 1 is a perspective view of a hoist according to one embodiment of the present invention. FIG. 2 is a perspective view of a hoist at a different angle according to one embodiment of the present invention. FIG. 3 is a top view of a hoist according to one embodiment of the present invention. FIG. 4 is a side view of a hoist according to one embodiment of the present invention. FIG. 5 is a drawing showing one side moving part and the other side moving part of a hoist according to one embodiment of the present invention. FIG. 6 is a drawing showing a cover portion of a hoist according to one embodiment of the present invention. FIG. 7 is a drawing showing a support member of a hoist according to one embodiment of the present invention. FIG. 8 is a drawing showing an operation blocking part of a hoist according to one embodiment of the present invention. FIG. 9 is a drawing showing a heat-blocking section of a hoist according to one embodiment of the present invention. Specific details for implementing the invention

[0032] Below, embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the invention.

[0033] However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. Furthermore, in order to clearly explain the invention in the drawings, parts unrelated to the description have been omitted, and similar parts throughout the specification have been given similar reference numerals.

[0034] In this specification, redundant descriptions of identical components are omitted.

[0035] Furthermore, when a component is described in this specification as being 'connected' or 'connected' to another component, it should be understood that it may be directly connected to or connected to the other component, or that there may be other components in between. On the other hand, when a component is described in this specification as being 'directly connected' or 'directly connected' to another component, it should be understood that there are no other components in between.

[0036] Furthermore, the terms used in this specification are used merely to describe specific embodiments and are not intended to limit the invention.

[0037] Additionally, in this specification, singular expressions may include plural expressions unless the context clearly indicates otherwise.

[0038] Furthermore, in this specification, terms such as 'comprising' or 'having' are intended merely to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not excluding in advance the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0039] Additionally, in this specification, the term "and / or" includes a combination of the plurality of described items or any of the plurality of described items. In this specification, "A or B" may include "A," "B," or "both A and B."

[0040] FIG. 1 is a perspective view of a hoist according to one embodiment of the present invention. FIG. 2 is a perspective view of a hoist according to one embodiment of the present invention from another angle. FIG. 3 is a top view of a hoist according to one embodiment of the present invention.

[0041] FIG. 4 is a side view of a hoist according to an embodiment of the present invention. FIG. 5 is a drawing showing a one-sided moving part and a other-sided moving part of a hoist according to an embodiment of the present invention.

[0042] Referring to FIGS. 1 to 5, a hoist (S) according to one embodiment of the present invention may include an outer section (M), a power section (G), a central gear section (G1), a one-sided gear section (G2), a one-sided rotating section (1), a one-sided moving section (2), a other-sided gear section (G3), a other-sided rotating section (3), and a other-sided moving section (4).

[0043] The outer section (M) can form the exterior of the hoist (S). That is, the outer section (M) can accommodate internal components such as a power section (G), a central gear section (G1), a one-sided gear section (G2), and a other-sided gear section (G3), and can protect the internal components from the external environment. In addition, the outer section (M) can be made of a durable metal or synthetic resin material to ensure environmental resistance against dust, moisture, and impact in industrial sites. Furthermore, the outer section (M) can be provided with an openable structure to facilitate maintenance of internal components, and the shape and size of the outer section (M) can be varied depending on the type of object to which it is applied and the working environment.

[0044] The power unit (G) is positioned in the outer part (M) to provide power. That is, the power unit (G) is equipped with an electric motor or the like to receive power from an external source to generate rotational force and transmit it to the central gear unit (G1). In addition, the power unit (G) is equipped to enable forward and reverse rotation, allowing for selective control of the direction in which the object to be raised or lowered is raised. Furthermore, the power unit (G) is equipped to allow for adjustment of the driving speed according to an external control signal, thereby optimizing the lifting speed according to the weight of the object and working conditions, and thus ensuring both work efficiency and safety simultaneously.

[0045] The central gear unit (G1) is connected to the power unit (G) to distribute power. That is, the central gear unit (G1) can distribute the power received from the power unit (G) equally to the one-sided gear unit (G2) and the other-sided gear unit (G3), so that the one-sided moving unit (2) and the other-sided moving unit (4) are synchronized and driven simultaneously. Accordingly, the one-sided and the other-sided of the object to be moved simultaneously at the same speed, thereby allowing the object to be moved while maintaining its horizontal position precisely. In addition, the central gear unit (G1) is equipped with a reduction function to convert the high-speed rotation of the power unit (G) into appropriate torque, thereby enabling stable lifting of heavy objects. Furthermore, by setting the gear ratio of the central gear unit (G1) to be the same as that of the one-sided gear unit (G2) and the other-sided gear unit (G3), the uniformity of power distribution can be ensured, and the object to be moved can be structurally prevented from tilting to one side.

[0046] The one-sided gear section (G2) is connected to one side of the central gear section (G1) to transmit power. That is, the one-sided gear section (G2) can transmit power distributed from the central gear section (G1) to the one-sided rotating section (1) to cause the one-sided rotating section (1) to rotate. In addition, the one-sided gear section (G2) is composed of multiple gears meshed together to minimize torque loss during the power transmission process and to supply stable rotational force to the one-sided rotating section (1). Furthermore, the one-sided gear section (G2) is symmetrically arranged with the other-sided gear section (G3) to maintain the overall weight balance of the hoist (S) and to evenly distribute gear wear even during long-term use.

[0047] The one-sided rotating part (1) may be provided to be rotatably connected to both sides of the one-sided gear part (G2). That is, the one-sided rotating part (1) receives power from the one-sided gear part (G2) and rotates, and can move the one-sided moving part (2) up and down by winding or unwinding the one-sided moving string (21). In addition, the one-sided rotating part (1) is provided in the form of a drum so that the one-sided moving string (21) is wound uniformly, thereby preventing twisting or tangling of the one-sided moving string (21) even during repetitive lifting operations. Furthermore, the one-sided rotating part (1) is stably supported on both sides by a support structure inside the outer part (M), so that it can operate stably without deformation even under eccentric loads generated during heavy lifting.

[0048] The one-sided moving part (2) is configured to move up and down according to the rotation of the one-sided rotating part (1) so as to move the object to be moved. Specifically, the one-sided moving part (2) may include a one-sided moving string (21), a one-sided moving main body part (22), a one-sided moving protrusion part (23), a one-sided moving penetration part (24), and a one-sided moving performing part (25).

[0049] The one-sided moving string (21) may be provided to be wound or unwound on the one-sided rotating part (1). That is, the one-sided moving string (21) may be wound or unwound according to the rotation of the one-sided rotating part (1), thereby moving the one-sided moving main body part (22) up and down. In addition, the one-sided moving string (21) may be provided with a material having excellent tensile strength, such as a wire rope or a high-strength fiber string, so that it can stably support the weight of the object to be worked on and maintain durability even during repetitive winding and unwinding operations. Furthermore, the length of the one-sided moving string (21) may be provided to be adjustable according to the working environment, and the tension of the one-sided moving string (21) may be maintained uniformly while the one-sided moving main body part (22) is connected to the object to be worked on, thereby assisting in the horizontal movement of the object to be worked on.

[0050] The one-sided movable main body (22) is connected to the one-sided movable string (21) and can be coupled to the object to be lifted. That is, the one-sided movable main body (22) is connected to the lower end of the one-sided movable string (21) and is closely coupled to the upper surface of one side of the object to be lifted, and the object to be lifted can be moved together with the one-sided movable string (21). In addition, the one-sided movable main body (22) is provided with a contact surface corresponding to the shape of the upper surface of the object to be lifted, thereby increasing the degree of contact with the object to be lifted, and thus preventing the object to be lifted from moving during the lifting operation. Furthermore, the one-sided movable main body (22) is provided with a high-strength metal material to stably share the weight of the object to be lifted, and is formed integrally with the one-sided movable protrusion (23) to secure structural rigidity.

[0051] The one-sided movable protrusion (23) can be formed to protrude from both ends of the one-sided movable main body (22). That is, the one-sided movable protrusion (23) is provided to protrude downward from both ends of the one-sided movable main body (22) to surround the side of the object to be worked on, thereby increasing the connection area with the object to be worked on and enhancing connection stability. In addition, the one-sided movable protrusion (23) is provided to make surface contact with the side of the object to be worked on, thereby distributing the load applied to the object to be worked on over a wide area during the lifting operation, and thus preventing stress from concentrating on a specific part of the object to be worked on. Furthermore, the protrusion length and shape of the one-sided movable protrusion (23) can be varied according to the thickness and shape of the object to be worked on, and accordingly, it can be universally applied to objects of various specifications.

[0052] The one-sided movable penetration part (24) is formed through the one-sided movable protrusion (23) so that a fastening member (J) can be inserted. That is, the one-sided movable penetration part (24) is fastened by inserting a bolt, which is the fastening member (J), into a fastening hole formed in the object to be worked on, thereby allowing the one-sided movable main body part (22) to be bolted to the object to be worked on. Accordingly, the risk of detachment is significantly reduced compared to the hook method, and high coupling stability can be secured during the lifting operation. In addition, the one-sided movable penetration part (24) can be formed at multiple locations on the one-sided movable protrusion (23), and by fastening multiple fastening members (J) simultaneously, the load is prevented from being concentrated at a single fastening point, and the coupling strength with the object to be worked on can be maximized. Furthermore, screw threads for screw connection with a fastening member (J) may be formed on the inner surface of the one-sided moving penetration part (24), thereby preventing the fastening member (J) from loosening and maintaining a stable connection state even during long-term lifting operations.

[0053] The one-sided movement performing part (25) can be positioned at the end of the one-sided movement string (21) and coupled to the object to be worked on. That is, the one-sided movement performing part (25) is positioned at the lower end of the one-sided movement string (21) and is coupled in direct contact with the object to be worked on, and can stably support the object to be worked on together with the one-sided movement main body part (22). In addition, the one-sided movement performing part (25) performs the role of evenly distributing the load between the one-sided movement string (21) and the object to be worked on, and can relieve local stress applied to the coupling part of the object to be worked on. Furthermore, the one-sided movement performing part (25) is provided with a contact surface corresponding to the shape of the upper surface of the object to be worked on, thereby increasing the degree of contact with the object to be worked on and effectively suppressing the object to be worked on moving in the horizontal direction during the lifting operation.

[0054] The other gear section (G3) is connected to the other side of the central gear section (G1) to transmit power. That is, the other gear section (G3) transmits power distributed from the central gear section (G1) to the other rotating section (3), so that the other rotating section (3) rotates in synchronization with the one rotating section (1). In addition, the other gear section (G3) is configured with the same gear ratio as the one gear section (G2) to ensure that the amount of power transmitted to the one side and the other side is maintained uniformly, and to allow both sides of the object to be lifted at the same speed and force. Furthermore, the other gear section (G3) is arranged symmetrically with respect to the one gear section (G2) to maintain the structural balance of the hoist (S) and to minimize vibration and noise during the power transmission process.

[0055] The other side rotating part (3) may be provided to be rotatably connected to both sides of the other side gear part (G3). That is, the other side rotating part (3) receives power from the other side gear part (G3) and rotates, and can move the other side moving part (4) up and down by winding or unwinding the other side moving string (41). In addition, the other side rotating part (3) is synchronized by the central gear part (G1) to rotate at the same speed and direction as the one side rotating part (1), so that both sides of the object to be worked on are always maintained at the same height. Furthermore, the other side rotating part (3) is provided with the same drum structure as the one side rotating part (1) to ensure uniform winding of the other side moving string (41) and to maintain stable operating performance even during repetitive lifting and lowering movements.

[0056] The other side moving part (4) is configured to move up and down according to the rotation of the other side rotating part (3) so as to move the object to be moved. Specifically, the other side moving part (4) may include an other side moving string (41), an other side moving main body part (42), an other side moving protrusion part (43), an other side moving penetration part (44), and an other side moving performing part (45).

[0057] The other side moving string (41) may be provided to be wound or unwound on the other side rotating part (3). That is, the other side moving string (41) is wound or unwound according to the rotation of the other side rotating part (3), and can move the other side moving main body (42) up and down. In addition, the other side moving string (41) is provided with the same material and specifications as the one side moving string (21) so that the tension on both sides is maintained uniformly, thereby allowing the horizontal state of the object to be precisely maintained and raised. Furthermore, the other side moving string (41) is synchronized with the one side moving string (21) and wound or unwound by the same length, thereby ensuring that the height of both sides of the object to be raised is always maintained at a constant level.

[0058] The other side moving body part (42) is connected to the other side moving string (41) and can be coupled to the object to be worked on. That is, the other side moving body part (42) is connected to the lower end of the other side moving string (41) and is closely coupled to the other side upper surface of the object to be worked on, and can support the object to be worked on in a balanced manner at a position corresponding to the one side moving body part (22). In addition, the other side moving body part (42) is provided with the same structure and material as the one side moving body part (22) to provide equal support force to both sides of the object to be worked on, and can prevent the object to be worked on one side from tilting during the lifting operation. Furthermore, the other side moving body part (42) is provided with a contact surface corresponding to the shape of the other side upper surface of the object to be worked on to increase the degree of contact, and can maximize the reliability of the coupling by fixing the object to be worked on in combination with bolting coupling through the fastening member (J).

[0059] The other side moving protrusion (43) can be formed to protrude from both ends of the other side moving main body (42). That is, the other side moving protrusion (43) is provided to protrude downward from both ends of the other side moving main body (42) to surround the side of the object to be worked on, thereby increasing the connection area with the object to be worked on and enhancing connection stability. In addition, the other side moving protrusion (43) is formed at a position corresponding to the one side moving protrusion (23) to uniformly surround both sides of the object to be worked on, and can evenly distribute the load applied to the side of the object to be worked on over a wide area. Furthermore, the other side moving protrusion (43), together with the one side moving protrusion (23), structurally restrains all sides of the object to be worked on, thereby effectively preventing rotation or horizontal movement of the object to be worked on during the lifting operation.

[0060] The other side movable penetration part (44) is formed through the other side movable protrusion (43) so that a fastening member (J) can be inserted. That is, the other side movable penetration part (44) is bolted to the object to be worked on by inserting a bolt, which is the fastening member (J), and thereby, together with the one side movable penetration part (24), both sides of the object to be worked on are fixed with the fastening member (J), effectively preventing the object to be worked from detaching during the lifting operation. In addition, the other side movable penetration part (44) is formed with the same specifications as the one side movable penetration part (24), allowing the same fastening member (J) to be used, thereby ensuring parts compatibility during maintenance and increasing the convenience of management. Furthermore, since the bolting connection through the other side movable penetration part (44) utilizes the existing fastening hole of the object to be worked on, it can be applied without separate additional processing and can be used universally on objects of various specifications.

[0061] The other side movement performing part (45) can be positioned at the end of the other side movement string (41) and coupled to the object to be worked on. That is, the other side movement performing part (45) is positioned at the lower end of the other side movement string (41) and is coupled in direct contact with the object to be worked on, and can stably support the object to be worked on together with the other side movement main body part (42). In addition, the other side movement performing part (45) supports the other side of the object to be worked on at a position corresponding to the one side movement performing part (25), and by ensuring that the supporting forces on both sides are balanced, the horizontal state of the object to be worked on can be precisely maintained during the lifting operation. Furthermore, the other side movement performing part (45) is provided with the same structure as the one side movement performing part (25) to provide symmetrical supporting forces to both sides of the object to be worked on, thereby ensuring that the weight of the object to be worked on is evenly distributed throughout the hoist (S), thereby improving the durability and safety of the hoist (S).

[0062] FIG. 6 is a drawing showing a cover portion of a hoist according to one embodiment of the present invention.

[0063] Referring to FIG. 6, a hoist (S) according to one embodiment of the present invention may further include a cover portion (5).

[0064] The cover portion (5) may be provided to cover the one-sided moving portion (2) and the other-sided moving portion (4). That is, the cover portion (5) protects the joint area between the one-sided moving main body portion (22) and the other-sided moving main body portion (42) and the object to be worked on from the outside, thereby blocking the inflow of foreign substances and preventing the fastening member (J) from loosening or being damaged. In addition, the cover portion (5) protects the safety of the worker by preventing the fastening member (J) and the moving main body portion from being exposed to the outside during the lifting operation, and prevents contamination of the joint area by dust or foreign substances in the working environment. Furthermore, the cover portion (5) may be provided to correspond to each of the one-sided moving portion (2) and the other-sided moving portion (4) to protect the joint area on both sides simultaneously, and its shape may be varied according to the type and specifications of the object to be worked on. Specifically, the cover portion (5) may include a cover body portion (51), a cover performing portion (52), a cover elastic portion (53), a cover friction portion (54), a cover magnetic portion (55), a cover penetration portion (56), and a cover pressing portion (57).

[0065] The cover body (51) forms an exterior and can be provided to cover the one-sided movable body (22). That is, the cover body (51) is provided to surround the upper part of the one-sided movable body (22) so as to shield the connection area between the one-sided movable body (22) and the object to be worked on from the outside. In addition, the cover body (51) is provided with a durable metal or synthetic resin material to prevent deformation caused by external impact and to stably accommodate components such as the internal cover performing part (52), cover elastic part (53), and cover friction part (54). Furthermore, the cover body (51) is provided with an inner shape corresponding to the shape of the one-sided movable body (22) to increase the degree of contact with the one-sided movable body (22), thereby effectively blocking the inflow of external foreign substances and ensuring the connection stability of the entire cover part (5).

[0066] The cover performing part (52) may be positioned inside the cover main body part (51) to surround the fastening member (J) inserted into the one-sided movable protrusion part (23) and the one-sided movable penetration part (24). That is, the cover performing part (52) is positioned to surround the outer surface of the fastening member (J) to prevent the fastening member (J) from being loosened or detached due to external impact or vibration. In addition, the cover performing part (52) is positioned to be in close contact with the fastening member (J) to disperse the external force applied to the fastening member (J) and to assist the structural rigidity of the bolted joint part. Furthermore, by the cover performing part (52) fixing the fastening member (J) in combination with the cover elastic part (53) and the cover friction part (54), the fastening member (J) can be stably maintained in a connected state even under vibration and impact occurring during the lifting operation.

[0067] The cover elastic part (53) is placed inside the cover performing part (52) and may be provided with an elastic material. That is, the cover elastic part (53) is provided with an elastic material such as rubber or silicone to absorb shocks and vibrations applied from the outside, thereby protecting the fastening member (J) and the bolted joint part. In addition, the cover elastic part (53) maintains the state in which the cover performing part (52) is continuously in close contact with the fastening member (J) through elastic restoring force, and accordingly, can stably provide an anti-loosening effect for the fastening member (J) for a long period. Furthermore, the cover elastic part (53) absorbs minute vibrations generated during the lifting process of the object to be lifted, thereby mitigating the repetitive load applied to the fastening member (J) and the one-sided moving penetration part (24), thereby preventing fatigue damage to the bolted joint part and improving the overall durability of the hoist (S).

[0068] The cover friction part (54) covers the cover elastic part (53) and may be provided with a friction coefficient greater than that of the cover performance part (52). That is, the cover friction part (54) is arranged to surround the outer side of the cover elastic part (53) and comes into direct contact with the outer surface of the fastening member (J), and through the high friction coefficient, it can suppress the fastening member (J) from moving in the rotational direction. In addition, the cover friction part (54) is provided with a high-friction elastic material and performs a combined shock absorption function of the cover elastic part (53) and a function to prevent the fastening member (J) from loosening, thereby stably maintaining the bonded state of the fastening member (J) even in an environment where vibration and shock are repeatedly applied during lifting operations. Furthermore, by having a higher friction coefficient than the cover performance part (52), the cover friction part (54) maximizes frictional resistance with the fastening member (J), and accordingly, the natural loosening of the fastening member (J) can be effectively prevented without a separate anti-loosening device.

[0069] The cover magnetic part (55) may be positioned at the bottom of the cover body part (51) to possess magnetism. That is, the cover magnetic part (55) may be equipped with a permanent magnet or an electromagnet and magnetically attracted to the metal one-sided movable body part (22) or the object to be lifted, thereby allowing the cover body part (51) to maintain a stable state of being coupled to the one-sided movable body part (22). In addition, since the cover magnetic part (55) fixes the cover body part (51) solely by magnetic force without any separate fastening means, the attachment and detachment of the cover part (5) before and after the lifting operation can be performed quickly and easily. Furthermore, the magnetic force of the cover magnetic part (55) is designed to provide sufficient adsorption force to prevent the cover body part (51) from detaching even with vibrations and shocks occurring during the lifting operation, while also allowing for easy separation when a worker applies a force greater than a certain amount, thereby maximizing work convenience.

[0070] The cover penetration portion (56) can be formed to penetrate the cover body portion (51). That is, the cover penetration portion (56) is formed by penetrating one side of the cover body portion (51), and can provide a path through which the cover pressure portion (57) can move through the cover penetration portion (56) to press the one-sided moving body portion (22). In addition, the cover penetration portion (56) is formed in a direction corresponding to the direction of movement of the cover pressure portion (57) to guide the linear movement of the cover pressure portion (57) and to induce the cover pressure portion (57) to press the one-sided moving body portion (22) at an accurate position. Furthermore, the inner surface of the cover penetration portion (56) is provided to be in close contact with the outer surface of the cover pressure portion (57) so as to block external foreign matter from entering the interior of the cover body portion (51) during the movement of the cover pressure portion (57).

[0071] The cover pressure member (57) is positioned in the cover penetration part (56) and is movable, so that it can be provided to selectively pressure the one-sided movable main body part (22). That is, the cover pressure member (57) advances or retracts through the cover penetration part (56), and when advancing, it directly presses the outer surface of the one-sided movable main body part (22) to strengthen the bonding force between the cover main body part (51) and the one-sided movable main body part (22). In addition, the cover pressure member (57) mechanically presses and fixes the one-sided movable main body part (22) along with fixing by the magnetic force of the cover magnetic part (55), thereby doubly preventing the cover part (5) from detaching during the lifting operation through a combined fixing method of magnetism and mechanical pressure. Furthermore, the cover pressure part (57) can be provided in the form of a bolt or pin so that a worker can operate it by hand without a tool, and accordingly, the attachment and detachment of the cover part (5) can be done quickly and easily, thereby improving work efficiency.

[0072] FIG. 7 is a drawing showing a support member of a hoist according to one embodiment of the present invention.

[0073] Referring to FIG. 7, a hoist (S) according to one embodiment of the present invention may further include a support member (6).

[0074] The support member (6) may be positioned on the outer part (M) to support the power unit (G). That is, the support member (6) is positioned on the inner side of the outer part (M) to elastically support the outer surface of the power unit (G) from multiple directions, thereby allowing the power unit (G) to maintain a stable position within the outer part (M). In addition, the support member (6) can improve the durability and operational stability of the entire hoist (S) by absorbing vibrations and shocks generated during the operation of the power unit (G) and suppressing vibrations transmitted to the outer part (M) and surrounding components. Furthermore, the support member (6) can elastically accommodate dimensional changes caused by thermal expansion of the power unit (G), thereby preventing interference between the power unit (G) and the outer part (M), and stably maintain the alignment of the power unit (G) even during long-term use. Specifically, the support member (6) may include a support main body member (61), a support insertion member (62), a support elastic member (63), a support pressure member (64), a support movement member (65), a support placement member (66), and a support performance member (67).

[0075] The support body (61) can form the exterior of the support part (6). That is, the support body (61) can be fixed to the inside of the exterior part (M) and can provide a structural base that accommodates components such as the support insertion part (62), support elastic part (63), support pressure part (64), support movement part (65), support placement part (66), and support performance part (67). In addition, the support body (61) is provided with a high-strength metal material to stably support the weight and driving load of the power unit (G) and can maintain structural rigidity without deformation even in a repetitive vibration and impact environment. Furthermore, the support body (61) can be provided with a shape corresponding to the exterior of the power unit (G) to maximize the contact area with the power unit (G), and can be configured to evenly support the outer surface of the power unit (G) from multiple directions through the support performance part (67).

[0076] The support indentation portion (62) can be formed in multiple places within the support main body portion (61). That is, the support indentation portion (62) can be formed in a concave shape at multiple locations along the inner surface of the support main body portion (61) to provide a space for accommodating the support elastic portion (63) and the support pressure portion (64). Additionally, the support indentation portion (62) can be arranged at equal intervals along the perimeter of the support main body portion (61) to uniformly support the outer surface of the power unit (G) from multiple directions, and the load applied to the power unit (G) can be distributed among the multiple support indentation portions (62) to prevent stress from concentrating in a specific area. Furthermore, the depth and shape of the support indentation portion (62) are designed to correspond to the compression range of the support elastic portion (63) and the travel distance of the support pressure portion (64), thereby optimizing the range in which the support portion (6) elastically supports the power unit (G).

[0077] The support elastic member (63) is positioned in the support insertion part (62) and can be provided to be compressible. That is, the support elastic member (63) is provided with an elastic material such as a spring or elastic rubber and repeatedly compresses and restores within the support insertion part (62), and can absorb vibrations and shocks generated during the operation of the power unit (G). In addition, the support elastic member (63) elastically presses the support pressure part (64) in the direction of the power unit (G) so that the support performing part (67) maintains a state of continuous contact with the outer surface of the power unit (G), and can stably support the power unit (G) by elastically responding to changes in the position of the power unit (G). Furthermore, the support elastic member (63) is positioned in each of the multiple support insertion parts (62) to simultaneously absorb vibrations and shocks applied to the power unit (G) from multiple directions, thereby effectively blocking the transmission of vibrations of the power unit (G) to the outer part (M) and surrounding components.

[0078] The support pressure member (64) can be positioned so as to face the support elastic member (63) in the support insertion part (62). That is, the support pressure member (64) receives the elastic force of the support elastic member (63) within the support insertion part (62) and moves in the direction of the power unit (G), and can fix the position of the power unit (G) by pressing the outer surface of the power unit (G) through the support performance part (67). In addition, the support pressure member (64) is positioned between the support elastic member (63) and the support movement part (65) to serve as a medium for uniformly transmitting the elastic force of the support elastic member (63) to the support movement part (65), and can buffer the compression deformation of the support elastic member (63) so that it does not directly affect the support movement part (65). Furthermore, the support pressure member (64) is guided on the inner side of the support input member (62) so that it can move stably within the support input member (62), so that the direction of movement of the support pressure member (64) can be maintained constant even if the direction of the load applied to the power member (G) changes.

[0079] The support moving part (65) may be connected to the support pressing part (64) to move the support pressing part (64). That is, the support moving part (65) connects the support pressing part (64) and the support placement part (66), and when the support pressing part (64) moves in the direction of the power unit (G) by the elastic force of the support elastic part (63), it can transmit this to the support placement part (66) so that the support performing part (67) can pressurize the power unit (G). In addition, the support moving part (65) is provided with a retractable structure so that the range of movement of the support pressing part (64) can be adjusted, and accordingly, the support force of the support part (6) can be flexibly adjusted according to the size and position of the power unit (G). Furthermore, the support moving part (65) also performs a guide function to guide the movement of the support pressing part (64), thereby restricting the support pressing part (64) to move only in the designed direction, which can ensure the operational stability of the support part (6).

[0080] The support placement section (66) can be placed at the end of the support elastic section (63). That is, the support placement section (66) is positioned between the support elastic section (63) and the support performance section (67) to accommodate one end of the support performance section (67), and can perform the role of connecting the support performance section (67) to receive the elastic force of the support elastic section (63) and support the power section (G). In addition, the support placement section (66) supports the performance angle section (672) of the support performance section (67) from the inside so that the angle of the support performance section (67) can be freely adjusted, and accordingly, the support performance section (67) can be closely supported at an optimal angle corresponding to the outer surface shape of the power section (G). Furthermore, the support arrangement part (66) performs a load distribution function that ensures the elastic force of the support elastic part (63) is uniformly transmitted to the support performing part (67), thereby enabling the support performing part (67) to stably and evenly support the power part (G).

[0081] The support performing part (67) is connected to the support placement part (66) and extends at an angle to support the power unit (G). That is, the support performing part (67) extends at an angle from the support placement part (66) toward the power unit (G) and adheres to the outer surface of the power unit (G), thereby supporting the power unit (G) in a combined manner in the lateral and inclined directions. In addition, the support performing part (67) is provided in multiple units and arranged at an angle along the outer circumference of the power unit (G), thereby evenly distributing and supporting the load applied to the power unit (G) from multiple directions and stably maintaining the position of the power unit (G). Furthermore, the support performing part (67) may include a performing main body part (671), a performing angle part (672), a performing magnetic part (673), a performing elastic part (674), and a performing absorption part (675).

[0082] The performance body (671) can form the exterior of the support performance unit (67). That is, the performance body (671) is provided in a rod shape that extends obliquely from the support arrangement unit (66) toward the power unit (G), forming the structural base of the support performance unit (67), and can accommodate the performance magnetic unit (673) and the performance absorption unit (675) inside. In addition, the performance body (671) is provided with a high-strength metal material to stably support the weight and vibration load of the power unit (G), and can maintain structural rigidity without deformation or fatigue failure even in a repetitive load environment. Furthermore, the inclination angle of the performance body (671) can be optimized according to the outer surface shape and support direction of the power unit (G), and the angle can be adjusted according to the field conditions through the performance angle unit (672).

[0083] The performance angle section (672) may be provided at one end of the performance main body section (671) so that the angle can be adjusted from the inside of the support arrangement section (66). That is, the performance angle section (672) may be provided as a ball joint or pivot structure so that the angle of the performance main body section (671) can be freely adjusted from the inside of the support arrangement section (66), and accordingly, the support angle of the support performance section (67) can be optimized according to the size and shape of the power section (G). In addition, the performance angle section (672) is provided with a locking function that maintains the angle after adjustment, thereby preventing the angle of the support performance section (67) from changing due to vibration and impact during the lifting operation and maintaining a constant support force for the power section (G). Furthermore, the performance angle section (672) may be provided with a wide angle adjustment range so that it can be universally applied to power sections (G) of various specifications, and accordingly, replacement and reinstallation of the power section (G) can be easily performed during maintenance of the hoist (S).

[0084] The performance magnetic part (673) may be provided to have magnetism at the other end of the performance main body part (671). That is, the performance magnetic part (673) is provided as a permanent magnet and is magnetically attracted to the outer surface of the power unit (G) made of metal material, thereby allowing the support performance part (67) to maintain a stable state of close contact with the outer surface of the power unit (G). In addition, the performance magnetic part (673) fixes the power unit (G) in combination with the elastic pressure of the support elastic part (63), thereby preventing the support performance part (67) from detaching from the power unit (G) due to vibrations occurring during the operation of the power unit (G). Furthermore, the magnetic force of the performance magnetic part (673) provides sufficient adsorption force corresponding to the weight and vibration magnitude of the power unit (G), while being designed so that it can be easily separated when a worker applies a force greater than a certain amount during maintenance, thereby ensuring convenience in the replacement and inspection of the power unit (G).

[0085] The performing elastic part (674) covers the performing magnetic part (673) and is provided with an elastic material to support the power part (G). That is, the performing elastic part (674) is provided with an elastic material such as rubber or silicone and is positioned to wrap around the outer surface of the performing magnetic part (673), and acts as a cushion between the performing magnetic part (673) and the outer surface of the power part (G) to absorb shocks applied to the power part (G). In addition, the performing elastic part (674) elastically deforms in correspondence with the shape of the outer surface of the power part (G), thereby maximizing the contact area with the power part (G) and allowing the magnetic force of the performing magnetic part (673) to act effectively on the power part (G) while simultaneously preventing damage to the outer surface of the power part (G). Furthermore, the performance elastic part (674) can improve the durability of the entire support part (6) by absorbing micro-vibrations generated during the operation of the power part (G) and damping the vibrations transmitted to the performance magnetic part (673) and the performance main body part (671).

[0086] The performance absorption part (675) is positioned inside the performance main body part (671) and can be provided to absorb shock while allowing the performance magnetic part (673) to be seated thereon. That is, the performance absorption part (675) elastically supports the performance magnetic part (673) inside the performance main body part (671), and when an external shock is applied, the performance magnetic part (673) can absorb the shock by flowing within the performance main body part (671). In addition, the performance absorption part (675) acts as a buffer between the performance magnetic part (673) and the performance main body part (671) to protect the performance magnetic part (673) from being damaged or detached even if a strong shock is applied, and to ensure that the magnetic force of the performance magnetic part (673) is maintained stably for a long period of time. Furthermore, the performance absorption section (675) forms a double shock absorption structure together with the performance elastic section (674) to absorb vibrations and external shocks generated in the power section (G) in stages, thereby maximizing the durability of the entire support performance section (67) and support section (6) and the support stability for the power section (G).

[0087] FIG. 8 is a drawing showing an operation blocking part of a hoist according to one embodiment of the present invention.

[0088] Referring to FIG. 8, a hoist (S) according to one embodiment of the present invention may further include a manual operation part (7) and an operation blocking part (8).

[0089] The manual operation unit (7) is connected to the central gear unit (G1) and can be provided to be operated manually. That is, the manual operation unit (7) can be provided so that in emergency situations, such as power cutoff or failure of the power unit (G), the operator can manually operate the central gear unit (G1) to raise and lower the one-sided moving unit (2) and the other-sided moving unit (4). In addition, the manual operation unit (7) is provided in the form of a handle or crank that the operator can easily grip and rotate, so that the object to be moved safely even in situations where electric drive is not possible. Furthermore, the manual operation unit (7) is directly connected to the central gear unit (G1) so that the one-sided moving unit (2) and the other-sided moving unit (4) are raised and lowered in a synchronized state during manual operation, thereby allowing the horizontal state of the object to be maintained even during manual operation.

[0090] The operation blocking unit (8) may be provided to be selectively coupled to the manual operation unit (7) to prevent the operation of the central gear unit (G1). That is, the operation blocking unit (8) is coupled to the manual operation unit (7) to restrict the rotation of the manual operation unit (7), thereby preventing the central gear unit (G1) from operating unintentionally and allowing the object to be fixed in a set position. Additionally, the operation blocking unit (8) is provided to be selectively detachable from the manual operation unit (7), so that the operation of the central gear unit (G1) can be quickly switched to allow or block the operation as needed. Furthermore, the operation blocking unit (8) is coupled to the manual operation unit (7) after the object to be accurately seated at the target position to block the operation of the central gear unit (G1), thereby preventing the position of the object to be unintentionally changed and ensuring work safety. Specifically, the operating blocking part (8) may include a blocking main body part (81), a blocking recess part (82), a blocking magnetic part (83), and a blocking friction part (84).

[0091] The blocking main body (81) can form the exterior of the operating blocking part (8). That is, the blocking main body (81) is provided with a shape corresponding to the exterior of the manual operating part (7), so that when combined with the manual operating part (7), it stably surrounds the manual operating part (7) and can accommodate components such as the blocking recess (82), the blocking magnetic part (83), and the blocking friction part (84) inside. In addition, the blocking main body (81) is provided with a high-strength metal or synthetic resin material to prevent deformation caused by external impact while combined with the manual operating part (7), and can secure sufficient structural rigidity so that the operating blocking part (8) can stably restrain the rotation of the manual operating part (7). Furthermore, the blocking main body (81) is provided with a shape that allows a worker to easily grip it with one hand to combine with or detach from the manual operating part (7), thereby enabling the operating blocking part (8) to be operated quickly even in emergency situations.

[0092] The blocking recess (82) can be formed by being recessed from the outer side to the inner side of the blocking main body (81). That is, the blocking recess (82) is formed concavely from the outer surface of the blocking main body (81) toward the inner side, providing a space where a worker can grip with their fingers or insert a separate locking means. Additionally, the blocking recess (82) is formed at multiple locations along the circumference of the blocking main body (81) to allow a worker to stably grip the blocking main body (81) from any direction, and to enable the connection and separation of the operating blocking part (8) to be performed quickly and easily. Furthermore, a blocking friction part (84) is disposed on the inner side of the blocking recess (82) to increase the frictional force with the manual operation part (7), thereby preventing the operating blocking part (8) from being arbitrarily detached due to external load or vibration while connected to the manual operation part (7).

[0093] The blocking magnetic part (83) may be provided to have magnetism at the end of the blocking main body part (81). That is, the blocking magnetic part (83) is provided as a permanent magnet and is magnetically attracted to the manual operating part (7) or the outer part (M) made of metal material, thereby allowing the operating blocking part (8) to be stably maintained in a state where it is coupled to the manual operating part (7). In addition, since the blocking magnetic part (83) fixes the operating blocking part (8) to the manual operating part (7) solely by magnetic force without a separate fastening means, the operator can quickly connect or disconnect the operating blocking part (8) in an emergency situation, thereby increasing work responsiveness. Furthermore, by fixing the operating blocking part (8) to the manual operating part (7) in combination with the frictional force of the blocking friction part (84), the blocking magnetic part (83) maximizes the coupling stability of the operating blocking part (8) through a dual fixing method of magnetism and friction, and effectively prevents unintended operation of the central gear part (G1).

[0094] The blocking friction part (84) is spaced apart in multiple locations on the inner side of the blocking recess (82) and may be provided with a friction coefficient greater than that of the blocking main body (81). That is, the blocking friction part (84) is provided with a material having a high friction coefficient, such as rubber or urethane, and is spaced apart in multiple locations on the inner side of the blocking recess (82), and can restrict the rotation of the manual operation part (7) with a high friction force by directly contacting the outer surface of the manual operation part (7). In addition, the blocking friction part (84) is spaced apart in multiple locations to disperse the contact points with the outer surface of the manual operation part (7), thereby ensuring that the friction force applied to the manual operation part (7) is not concentrated in a specific area but is distributed evenly, thus preventing surface damage to the manual operation part (7). Furthermore, the blocking friction part (84) has a higher friction coefficient than the blocking main body part (81), thereby maximizing frictional resistance with the manual operation part (7), and together with the magnetic force of the blocking magnetic part (83), the operation of the central gear part (G1) can be physically blocked while the operation blocking part (8) is coupled to the manual operation part (7), so that the position of the object to be fixed can be safely fixed.

[0095] FIG. 9 is a drawing showing a heat-blocking section of a hoist according to one embodiment of the present invention.

[0096] Referring to FIG. 9, a hoist (S) according to one embodiment of the present invention may further include a heat-blocking member (9).

[0097] The heat blocking unit (9) may be configured to detect overheating of the power unit (G) and block the operation of the power unit (G). That is, the heat blocking unit (9) is positioned to surround the outer surface of the power unit (G) to detect heat generated from the power unit (G) in real time, and if the temperature of the power unit (G) exceeds a set temperature, it can physically cut off the power supply to the power unit (G) to prevent failure and fire caused by overheating of the power unit (G). In addition, the heat blocking unit (9) is configured to physically cut off the power supply using the thermal deformation of the bimetal part (93) without a separate electronic control device, so that it can independently perform the overheating cutoff function even in the event of a malfunction or failure of the electronic control system. Furthermore, the heat blocking unit (9) is configured so that power supply to the power unit (G) can be resumed when the temperature of the power unit (G) returns to a normal range and the bimetal part (93) is restored to its original shape, thereby enabling automatic recovery in a temporary overheating situation. Specifically, the heat blocking part (9) may include a heat blocking main body part (91), a heat conduction pad (92), a bimetal part (93), a heat blocking switch part (94), and a heat dissipation fin part (95).

[0098] The heat-blocking main body (91) can be positioned to surround the outer surface of the power unit (G). That is, the heat-blocking main body (91) is provided with a shape corresponding to the outer shape of the power unit (G) and is positioned to uniformly surround the entire outer surface of the power unit (G), and can provide a structural base that accommodates a heat conduction pad (92), a bimetal part (93), and a heat-blocking switch part (94) inside. In addition, the heat-blocking main body (91) is provided with a metal material having excellent thermal conductivity so that it can rapidly absorb heat generated from the power unit (G) and effectively release it to the outside through the heat dissipation fin part (95), thereby suppressing the temperature rise of the power unit (G) and maintaining the normal operating temperature range. Furthermore, the heat-blocking main body (91) is provided to be in close contact with the outer surface of the power unit (G) to minimize thermal resistance between the power unit (G) and the heat-blocking main body (91), and to allow heat generated from the power unit (G) to be rapidly transferred to the heat conduction pad (92) and the bimetal part (93).

[0099] The heat conduction pad (92) is positioned on the inner surface of the heat-blocking main body (91) and can be in close contact with the outer surface of the power unit (G). That is, the heat conduction pad (92) is provided with an elastic material having excellent thermal conductivity and is positioned in close contact between the outer surface of the power unit (G) and the inner surface of the heat-blocking main body (91), and can perform the role of a heat medium that rapidly and uniformly transfers heat generated from the power unit (G) to the bimetal part (93). In addition, the heat conduction pad (92) is provided with an elastic material and deforms in correspondence with the shape of the outer surface of the power unit (G), thereby maximizing the contact area with the power unit (G) and filling the minute gap between the power unit (G) and the heat-blocking main body (91), so as to maximize heat transfer efficiency. Furthermore, the heat conduction pad (92) absorbs vibrations and shocks generated during the operation of the power unit (G) and mitigates mechanical shocks transmitted to the bimetal unit (93) and the heat blocking switch unit (94), thereby preventing malfunction of the heat blocking unit (9) and maintaining a stable overheat detection function for a long period.

[0100] The bimetal part (93) is embedded in the heat-blocking main body (91) to contact the heat conduction pad (92) and can be deformed when the set temperature is exceeded. That is, the bimetal part (93) is provided with a structure in which two types of metal plates with different coefficients of thermal expansion are joined, so that when the temperature exceeds the set temperature due to heat transferred through the heat conduction pad (92), deformation in which it bends in one direction may occur due to the difference in thermal expansion between the two metal plates. In addition, the bimetal part (93) is embedded in the heat-blocking main body (91) so that it can precisely detect only the temperature of the power unit (G) while minimizing the influence of the external environment, and can respond quickly to temperature changes of the power unit (G) by directly contacting the heat conduction pad (92). Furthermore, the bimetal part (93) has the characteristic of automatically restoring to its original shape when the temperature of the power part (G) recovers to below the set temperature, so that the power part (G) can be restarted without separate manual operation after the temporary overheating situation is resolved.

[0101] The heat-blocking switch unit (94) can be pressed by the deformation of the bimetal unit (93) to physically cut off power to the power unit (G). That is, the heat-blocking switch unit (94) is positioned adjacent to the bimetal unit (93), and when the bimetal unit (93) is deformed due to exceeding the set temperature, it is pressed by the bimetal unit (93), thereby physically opening the power circuit supplied to the power unit (G) and immediately cutting off the operation of the power unit (G). In addition, the heat-blocking switch unit (94) is equipped with a physical switch structure that operates directly by the mechanical deformation of the bimetal unit (93) without an electronic control signal, so it can independently perform an overheating cutoff function even in the event of a malfunction of the control system or an electrical failure. Furthermore, the heat-blocking switch (94) may be equipped with an automatic recovery structure in which the power circuit is automatically reconnected when the bimetal part (93) is restored to its original shape, and accordingly, the power unit (G) is automatically restarted after the temporary overheating situation is resolved, thereby ensuring work continuity.

[0102] The heat dissipation fin portion (95) is positioned on the outer surface of the heat-blocking main body portion (91) to dissipate heat generated from the power unit (G) to the outside. That is, the heat dissipation fin portion (95) is formed to protrude in the shape of multiple fins on the outer surface of the heat-blocking main body portion (91), thereby significantly increasing the contact area with air. This allows the heat generated from the power unit (G) to be effectively dissipated into the outside air, thereby suppressing the temperature rise of the power unit (G). Additionally, the heat dissipation fin portion (95) is provided with an aluminum or copper material having excellent thermal conductivity, so that it rapidly absorbs the heat transferred from the heat-blocking main body portion (91) and dissipates it to the outside, thereby enabling the power unit (G) to maintain a normal operating temperature range and operate stably for a long time. Furthermore, the heat dissipation fin section (95) forms a thermal management system for the power section (G) together with the bimetal section (93) and the heat blocking switch section (94), thereby preventing overheating of the power section (G) in advance through active heat dissipation via the heat dissipation fin section (95) under normal conditions, and forming a double safety structure that physically cuts off the power supply via the bimetal section (93) and the heat blocking switch section (94) when overheating occurs, so that malfunctions and fires caused by overheating of the power section (G) can be effectively prevented.

[0103] Additionally, the bimetal section (93) is arranged in series between the heat conduction pad (92) and the heat blocking switch section (94), so that it can be deformed by the heat transmitted through the heat conduction pad (92) and pressurize the heat blocking switch section (94). That is, through the serial arrangement structure of the heat conduction pad (92), the bimetal section (93), and the heat blocking switch section (94), the heat of the power section (G) is transmitted in stages to operate the heat blocking switch section (94), so the reaction path from overheat detection to power cutoff is simplified, allowing for rapid and reliable overheat cutoff. Furthermore, the serial arrangement structure ensures that the bimetal section (93) reacts only to the heat transmitted from the heat conduction pad (92), thereby preventing malfunctions caused by external ambient temperatures or other heat sources, and enables overheat cutoff that accurately reflects the actual temperature of the power section (G). Furthermore, since the functions of each component in this serial structure are sequentially linked and operate, even if a malfunction occurs in any one component, the impact on the operational reliability of the entire thermal insulation system is minimized, thereby maintaining the safety of the hoist (S) at a high level.

[0104] Meanwhile, the check unit (K) may be connected to the shaft between the one-sided gear unit (G2) and the one-sided rotation unit (1) to detect the amount of rotation resulting from the driving of the power unit (G). That is, the check unit (K) is connected to the shaft between the one-sided gear unit (G2) and the one-sided rotation unit (1) by a chain and rotates together with the rotation of the shaft when the power unit (G) is driven, and can detect the current position data of the one-sided moving unit (2) and the other-sided moving unit (4) in real time and transmit it to the control panel. In addition, the check unit (K) is equipped with a rotary encoder or a limit sensor module to precisely measure the number of times and the direction in which the shaft has rotated, thereby providing accurate position information regarding how many turns the one-sided moving string (21) and the other-sided moving string (41) have been wound up or down. Furthermore, the check unit (K) automatically controls the operation of the power unit (G) based on position data transmitted to the control panel, and stops the operation of the power unit (G) when the object to be moved accurately reaches the set position, thereby preventing damage to the device and safety accidents caused by excessive upward movement or excessive downward movement of the object to be moved.

[0105] Although representative embodiments of the present invention have been described in detail above, those skilled in the art will understand that various modifications can be made to the above-described embodiments without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims set forth below as well as equivalents thereof. Explanation of the symbols

[0106] S: Hoist 1: One-sided rotating part 2: One-sided moving part 3: Other-sided rotating part 4: Other side moving part 5: Cover part 6: Support part 7: Manual operation part 8: Operation cutoff section 9: Heat cutoff section

Claims

Claim 1 An exterior part forming an exterior; a power part disposed in the exterior part and providing power; a central gear part connected to the power part and distributing power; a one-sided gear part connected to one side of the central gear part and transmitting power; a one-sided rotating part connected to both sides of the one-sided gear part and configured to be rotatable; a one-sided moving part configured to move up and down according to the rotation of the one-sided rotating part and moving an object to be moved; a other-sided gear part connected to the other side of the central gear part and transmitting power; and a other-sided rotating part connected to both sides of the other-sided gear part and configured to be rotatable. and a second moving part configured to move up and down according to the rotation of the second rotating part to move an object to be worked on; wherein the first moving part and the second moving part are bolted to the object to be worked on, and the first moving part is configured to have a first moving string that is wound around or unwound from the first rotating part; a first moving main body connected to the first moving string and coupled to the object to be worked on; a first moving protrusion formed protruding from both ends of the first moving main body; and a first moving through part formed through the first moving protrusion, into which a fastening member is inserted. and a one-sided movement performing part disposed at the end of the one-sided movement string and coupled to a target object; wherein the other-sided movement part comprises a other-sided movement string configured to be wound or unwound by the other-sided rotation part; a other-sided movement main body part connected to the other-sided movement string and coupled to a target object; other-sided movement protrusions formed protruding from both ends of the other-sided movement main body part; and other-sided movement penetration parts formed through the other-sided movement protrusions and into which a fastening member is inserted. and further comprising: a side movement performing part disposed at the end of the side movement string and coupled to a target object; and a cover part provided to cover the one side movement part and the other side movement part; wherein the cover part forms an exterior and is provided to cover the one side movement main body part; a cover main body part disposed inside the cover main body part and provided to surround a fastening member inserted into the one side movement protrusion part and the one side movement penetration part; and a cover elastic part disposed inside the cover performing part and provided with an elastic material.A hoist characterized by comprising: a cover friction part covering the cover elastic part and having a friction coefficient greater than that of the cover performing part; a cover magnetic part disposed at the lower end of the cover main body part and provided to have magnetism; a cover penetration part formed penetrating the cover main body part; and a cover pressing part disposed in the cover penetration part and movable to selectively press the one-sided movable main body part. Claim 2 delete Claim 3 delete Claim 4 A hoist according to claim 1, further comprising: a support member disposed in the outer portion and configured to support the power member; wherein the support member comprises: a support main body portion forming the outer portion; a plurality of support indentation portions formed in the support main body portion; a support elastic portion disposed in the support indentation portion and configured to be compressible; a support pressure portion disposed in the support indentation portion to face the support elastic portion; a support moving portion connected to the support pressure portion and configured to move the support pressure portion; a support placement portion disposed at the end of the support elastic portion; and a support performing portion connected to the support placement portion and extended at an angle to support the power member. Claim 5 In claim 4, the support performing part is characterized by comprising: a performing main body part forming an exterior; a performing angle part provided at one end of the performing main body part and configured to adjust the angle from the inside of the support arrangement part; a performing magnetic part provided at the other end of the performing main body part to have magnetism; a performing elastic part covering the performing magnetic part and provided with an elastic material to support the power part; and a performing absorption part disposed inside the performing main body part, configured to absorb shock while the performing magnetic part is seated thereon.

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