Motor replacement auxiliary device

Abstract

The utility model discloses a motor replacement auxiliary device which comprises a supporting structure, a loading platform installed on the supporting structure and a lifting assembly movably connected to the supporting structure. Wherein the lifting assembly comprises a lifting rod movably connected to the supporting structure and a suspender with one end movably connected to the lifting rod, the side, close to the end connected with the lifting rod, of the suspender is movably connected to the supporting structure, the lifting rod is used for driving the suspender to rotate, the lifting rod drives the suspender to rotate downwards when the lifting rod ascends, and the lifting rod drives the suspender to rotate upwards when the lifting rod descends. According to the device, due to the fact that the lifting rod capable of ascending and descending is adopted, after the motor is lifted, the lifting rod can descend to reduce the occupied space of the lifting rod, then the storage space occupied by the motor replacement auxiliary device is reduced, and the motor replacement auxiliary device can be stored conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor replacement equipment technical field especially relates to a motor replacement auxiliary device. BACKGROUND

[0002] Roller bed motor is the key equipment of steel plant production, when the fault needs timely replacement. However, due to the low installation position of motor and narrow space, the existing replacement equipment adopts fixed hoisting support, its volume is not adjustable, the space occupied before and after completing motor hoisting is relatively large, is not convenient to store. Therefore, the existing motor replacement equipment has the problem of inconvenient storage. SUMMARY

[0003] In view of the defects existing in the prior art, the purpose of the present application is to provide a motor replacement auxiliary device to solve the problem that the motor replacement equipment occupies relatively large space before and after completing motor hoisting and is not convenient to store.

[0004] To achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

[0005] The motor replacement auxiliary device provided by the embodiments of the present application comprises:

[0006] A support structure;

[0007] A loading platform installed on the support structure for loading motor;

[0008] A lifting assembly comprising:

[0009] A lifting rod movably connected to the support structure;

[0010] A boom having one end movably connected to the lifting rod, the boom being movably connected to the support structure on one side close to the connection end of the boom and the lifting rod, the lifting rod being used to drive the boom to rotate, and the boom being used to hang the motor;

[0011] When the lifting rod rises, it drives the boom to rotate downward, and when the lifting rod descends, it drives the boom to rotate upward.

[0012] In some embodiments, the lifting assembly comprises a connecting sleeve and a connecting block, the connecting sleeve is connected with the upper part of the lifting rod, the middle edge of the connecting block is movably connected with the connecting sleeve, the upper end of the connecting block is movably connected with one end of the boom, and the lower end of the connecting block is movably connected with the support structure.

[0013] In some embodiments, the lifting assembly further comprises a first connecting member, one end of the first connecting member movably connected to the upper end of the connecting block, one end of the boom movably connected to the first connecting member, and the other end of the first connecting member connected to the side of the boom away from the connecting end of the first connecting member; the side of the first connecting member close to the connecting end of the first connecting member movably connected to the support structure.

[0014] In some embodiments, the lifting assembly further comprises a second connecting member, one end of the second connecting member movably connected to the lower end of the connecting block, and the other end of the second connecting member movably connected to the support structure.

[0015] In some embodiments, the lifting assembly comprises a hydraulic cylinder, the lower part of the lifting rod movably connected to the hydraulic cylinder, and the hydraulic cylinder used to drive the lifting rod to lift.

[0016] In some embodiments, the support structure comprises a support block, the side of the first connecting member close to the connecting end of the first connecting member movably connected to the support block, and the other end of the second connecting member movably connected to the support block.

[0017] In some embodiments, the support structure comprises a base and a support column, and the support column connected to the base.

[0018] In some embodiments, the support structure further comprises a first diagonal brace and a second diagonal brace, one end of the first diagonal brace and one end of the second diagonal brace respectively connected to the support column, and the other end of the first diagonal brace and the other end of the second diagonal brace respectively connected to the front end of the base.

[0019] In some embodiments, the base is in the shape of a U, the shape of the loading platform matched with the U-shaped base, and the loading platform detachably mounted on the U-shaped base.

[0020] In some embodiments, the other end of the boom away from the connecting end of the boom is provided with a lifting ring, and the lifting ring used to hang the motor.

[0021] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0022] The motor replacement auxiliary device provided by the embodiments of the present application can be lowered to reduce the occupied space after the motor is hoisted, thereby reducing the storage space of the motor replacement auxiliary device and facilitating the storage of the motor replacement auxiliary device. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1A schematic diagram of a motor replacement device structure is provided for some embodiments of the present application.

[0024] Figure 2 A partial enlarged view of part A of the motor replacement device structure is provided for some embodiments of the present application.

[0025] Figure 3 A schematic diagram of a boom rotation of the motor replacement device is provided for some embodiments of the present application.

[0026] Reference signs:

[0027] 10 support structure 3021 boom

[0028] 101 base 303 hydraulic cylinder

[0029] 102 support column 304 connecting sleeve

[0030] 103 first inclined strut 305 connecting block

[0031] 104 second inclined strut 306 first connecting piece

[0032] 105 support block 307 second connecting piece

[0033] 20 loading platform 401 first roller

[0034] 30 lifting assembly 402 second roller

[0035] 301 lifting rod 403 third roller

[0036] 302 boom 50 handle DETAILED DESCRIPTION

[0037] The embodiments of the present application are described below by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosure.

[0038] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. In order to enable those skilled in the art to better understand the present application scheme, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0039] It should be noted that the terms "first", "second" and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a specific sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and embodiments. Moreover, the terms "comprise", "have", "contain" and / or "include" as well as any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article or apparatus that comprises, has, contains or includes any of the features of the above-described ones can not necessarily comprise, have, contain or include all of the other features of the process, method, article or apparatus. Embodiments of the present application will not be described with reference to the accompanying drawings solely for the purpose of clarity and a variety of changes in form that are obvious to those of ordinary skill will not be described or will be described to a minimal extent. That is, the disclosed embodiments are intended to be illustrative only and merely representative of methods and / or arrangements in which the various embodiments of the present application can be employed.

[0040] It should be noted that, unless otherwise explicitly specified and limited, the terms "mount", "connected", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] The embodiments of the present application provide a motor replacement auxiliary device. As shown in Figure 1 In some embodiments, the motor replacement auxiliary device comprises:

[0042] a support structure 10;

[0043] a loading platform 20 mounted on the support structure 10, used for loading a motor;

[0044] a lifting assembly 30 comprising:

[0045] a lifting rod 301 movably connected to the support structure 10;

[0046] a boom 302 movably connected to the lifting rod 301 at one end, and movably connected to the support structure 10 at a side of the boom 302 close to the connection end of the boom 302 with the lifting rod 301, the lifting rod 301 being used to drive the boom 302 to rotate, and the boom 302 being used to hang a motor;

[0047] When the lifting rod rises, the boom is driven to rotate downward, and when the lifting rod descends, the boom is driven to rotate upward.

[0048] In the embodiments of the present application, the lifting assembly 30 is used to drive the motor to lift. The support structure 10 is made of hard material and mainly serves to stabilize and support. For example, the support structure 10 can be made of steel pipe. Further, the support structure 10 is made of metal material such as steel or aluminum alloy. The support structure 10 is a support frame made of metal material. The loading platform 20 is installed at the lower part of the support structure 10 and mainly serves to load and carry the motor. The loading platform 20 is made of hard material such as metal. Further, the loading platform 20 is a load-bearing plate made of metal material. In other embodiments, the loading platform 20 is detachably installed on the support structure 10. For example, the loading platform 20 can be detachably installed on the support structure 10 by means of clamping, screwing or directly placing on the support structure 10.

[0049] The lifting rod 301 and the boom 302 are both made of hard material. Further, the lifting rod 301 and the boom 302 are both made of metal material such as steel or aluminum alloy. In other embodiments, the lifting rod 301 is pivotally connected with the support structure 10, the boom 302 is pivotally connected with the lifting rod 301, and the lifting rod 301 drives the boom to lift.

[0050] As shown in Figure 3 When the lifting rod 301 rises, it drives the end of the boom 302 close to the end connected with the lifting rod 301 to rotate upward and drives the end of the boom 302 away from the end connected with the lifting rod 301 to rotate downward, thereby driving the motor to descend. When the lifting rod 301 descends, it drives the end of the boom 302 close to the end connected with the lifting rod 301 to rotate downward and drives the end of the boom 302 away from the end connected with the lifting rod 301 to rotate upward, thereby driving the motor to ascend. Figure 3 In the embodiments of the present application, the dashed line in the middle is the state of the boom 302 when it is stored, the state above the dashed line is the state of the boom 302 when it hoists the motor, and the state below the dashed line is the state of the boom 302 when it lowers the motor. The motor replacement auxiliary device provided by the embodiments of the present application can reduce the occupied space of the motor replacement auxiliary device by lowering the boom 302 after completing the motor hoisting, thereby facilitating the storage of the motor replacement auxiliary device.

[0051] As shown in Figure 1 and Figure 2As shown, in some embodiments, the lifting assembly 30 comprises a connecting sleeve 304 and a connecting block 305, the connecting sleeve 304 is connected with the upper part of the lifting rod 301, the middle edge of the connecting block 305 is movably connected with the connecting sleeve 304, the upper end of the connecting block 305 is movably connected with one end of the hoisting rod 302, and the lower end of the connecting block 305 is movably connected with the support structure 10. Further, the connecting sleeve 304 can be sleeved on the upper part of the lifting rod 301 and fixed or detachably connected by screwing, the middle edge of the connecting block 305 can be pivotally connected with the connecting sleeve 304, the upper end of the connecting block 305 can be pivotally connected with one end of the hoisting rod 302, and the lower end of the connecting block 305 can be pivotally connected with the support structure 10. The connecting block 305 can be a triangular prism, and the connecting sleeve 304 can be pivotally connected with the left end of the connecting block 305.

[0052] In the embodiments of the present application, when the lifting rod 301 descends, the connecting block 305 is driven to rotate, and the lower end of the connecting block 305 is movably connected with the support structure 10 to form an action, so that the lower end of the connecting block 305 moves close to the support structure 10, and the upper end of the connecting block 305 moves away from the support structure 10, thereby driving the hoisting rod 302 to rotate upward as a whole from the end far away from the connecting end of the connecting block 305; when the lifting rod 301 ascends, the connecting block 305 is driven to rotate, and the lower end of the connecting block 305 is movably connected with the support structure 10 to form an action, so that the lower end of the connecting block 305 moves away from the support structure 10, and the upper end of the connecting block 305 moves close to the support structure 10, thereby driving the hoisting rod 302 to rotate downward as a whole from the end far away from the connecting end of the connecting block 305.

[0053] When the end of the hoisting rod 302 far away from the connecting end of the connecting block 305 rotates downward, it shrinks towards the lower space of the support structure 10, which can reduce the space occupied by the end, so that it is suitable for motor replacement operation in a narrow space and complex surrounding environment; on the other hand, when the motor does not need to be hoisted, the end can be lowered and the space occupied by it can be shrunk, so that it is suitable for motor carrying operation in a narrow space and complex surrounding environment.

[0054] In the embodiments of the present application, when the end of the hoisting rod 302 far away from the connecting end of the connecting block 305 rotates upward, the motor is lifted; when the end of the hoisting rod 302 far away from the connecting end of the connecting block 305 rotates downward, the motor is lowered.

[0055] As Figure 1 and 3As shown, under the driving action, the end of the boom 302 away from its connection with the connecting block 305 can rotate upward within a certain angle range and drive the motor to rise within a certain height range; under the driving action, the end of the boom 302 away from its connection with the connecting block 305 can rotate downward within a certain angle range and drive the motor to descend within a certain angle range.

[0056] In other embodiments, the connecting sleeve 304 is connected to the upper end of the lifting rod 301, so that the lifting rod 301 can better drive the connecting block 305 to rotate, thereby making the rotation of the boom 302 smoother.

[0057] like Figure 2 As shown, in some embodiments, the lifting assembly 30 further includes a first connecting member 306. One end of the first connecting member 306 is movably connected to the upper end of the connecting block 305, one end of the boom 302 is movably connected to the first connecting member 306, and the other end of the first connecting member 306 is connected to the side of the boom 302 away from its connection end with the first connecting member 306. The side of the first connecting member 306 near its connection end with the connecting block 305 is movably connected to the support structure 10. Further, one end of the first connecting member 306 can be pivotally connected to the upper end of the connecting block 305, one end of the boom 302 can be pivotally connected to the first connecting member 306, and the other end of the first connecting member 306 can be fixedly connected to the side of the boom 302 away from its connection end with the first connecting member 306 by welding or screwing. The side of the first connecting member 306 near its connection end with the connecting block 305 can be pivotally connected to the support structure 10.

[0058] In this embodiment, one end of the first connector 306 is movably connected to the upper end of the connecting block 305, and one end of the boom 302 is movably connected to the first connector 306. Furthermore, the side of the first connector 306 near its connection end with the connecting block 305 is movably connected to the support structure 10. This allows for better transmission of the upward or downward driving force of the lifting rod 301 to the boom 302, thereby enabling the end of the boom 302 near its connection end with the connecting block 305 to rotate more smoothly. At the same time, the design of the first connector 306 can also create a stable pushing and pulling effect on the connecting block 305.

[0059] In other embodiments, the first connector 306 is L-shaped. The end of the L-shaped first connector 306 away from the connecting block 305 can provide better support for the boom 302, making the boom 302 rotate more smoothly.

[0060] like Figure 2As shown, in some embodiments, the lifting assembly 30 further includes a second connector 307, one end of which is movably connected to the lower end of the connecting block 305, and the other end of which is movably connected to the support structure 10. Further, one end (e.g., the left end) of the second connector 307 may be pivotally connected to the lower end of the connecting block 305, and the other end (e.g., the right end) of the second connector 307 may be pivotally connected to the support structure 10.

[0061] In this embodiment, the second connector 307 is designed such that one end of the second connector 307 is movably connected to the lower end of the connecting block 305, and the other end of the second connector 307 is movably connected to the support mechanism 10. Therefore, when the lifting rod 301 drives the connecting block 305 to rotate, one end of the second connector 307 exerts a stable pushing and pulling force on the lower end of the connecting block 305, and the upper end of the connecting block 305 exerts a stable pushing and pulling force on the lifting rod 302, thereby forcing the end of the lifting rod 302 away from its connection with the connecting block 305 to rotate stably up and down.

[0062] like Figure 1 As shown, in some embodiments, the lifting assembly 30 includes a hydraulic cylinder 303, and the lower part of the lifting rod 301 is movably connected to the hydraulic cylinder 303, which drives the lifting rod 301 to move up and down. Further, the lower part of the lifting rod 301 is recessed within the hydraulic cylinder 303. The hydraulic cylinder 303 can drive the lifting rod 301 to move up and down, thereby causing the boom 302 to rotate stably up and down. The lifting rod 301 can be the piston rod of the hydraulic cylinder 303.

[0063] like Figure 2 As shown, in some embodiments, the support structure 10 includes a support block 105. A first connector 306 is movably connected to the support block 105 at one end near its connection to the connecting block 305, and the other end of a second connector 307 is movably connected to the support block 105. Further, the first connector 306 can be pivotally connected to the top of the support block 105 at one end near its connection to the connecting block 305, and the other end of the second connector 307 can be pivotally connected to the bottom of the support block 105. By setting the support block 105 and making the first and second connectors 306 and 307 movably connected to it, the first and second connectors 306 and 307 can respectively exert a stable pushing and pulling force on the upper and lower ends of the connecting block 305, effectively converting the driving force of the lifting rod 301 into the rotational power of the boom 302. Simultaneously, the support block 105 also provides stable support for the boom 302.

[0064] like Figure 1As shown in the figure, in some embodiments, the support structure 10 comprises a base 101 and a support column 102, and the support column 102 is connected to the base 101. Further, the lower end of the support column 102 can be fixed to the base 101 by welding or screwing. During the motor replacement process, the setting of the base 101 and the support column 102 can play a stabilizing role during the hoisting of the motor by the hoist 302. In other embodiments, the support block 105 is arranged at the upper end of the support column 102, and the support column 102 provides stable support for the support block 105.

[0065] In the embodiments of the present application, the loading platform 20 is installed on the base 101, and the motor can be smoothly transported to the installation station by the loading platform 20, which can avoid the inefficient carrying mode of manual carrying of the motor.

[0066] As shown in the figure, Figure 1 In some embodiments, the support structure 10 further comprises a first inclined support 103 and a second inclined support 104, one end of the first inclined support 103 and one end of the second inclined support 104 are respectively connected to the support column 102, and the other end of the first inclined support 103 and the other end of the second inclined support 104 are respectively connected to the front end of the base 101. Further, one end (e.g. top end) of the first inclined support 103 and one end (e.g. top end) of the second inclined support 104 can be fixedly connected to the support column 102 by welding or screwing, and the other end (e.g. bottom end) of the first inclined support 103 and the other end (e.g. bottom end) of the second inclined support 104 can be fixedly connected to the front end of the base 101 by welding or screwing.

[0067] In the embodiments of the present application, the design of the first inclined support 103 and the second inclined support 104 can make the support of the base 101 and the support column 102 more stable; at the same time, the design of the first inclined support 103 and the second inclined support 104 can also form a protection area on both sides of the base 101, which can avoid accidental injuries such as bumps caused by the operator being too close to the hoisting area of the motor.

[0068] As shown in the figure, Figure 1 In some embodiments, the base 101 is in the shape of a U, the shape of the loading platform 20 is adapted to the U-shaped base 101, and the loading platform 20 is detachably installed on the U-shaped base 101; further, the base 101 is a U-shaped support rod. The loading platform 20 is mainly used for transporting the motor, and its shape is not limited as long as it is adapted to the base 101. In actual application scenarios, the U-shaped base 101 can be more closely attached to the roller bed, which is conducive to the replacement operation of the roller bed motor and improves the replacement efficiency of the roller bed motor.

[0069] In the embodiment of the present application, the loading platform 20 is designed to be detachably mounted on the base 101 of the U-shaped structure, so that when the roller motor is not needed to be transported, the loading platform 20 can be detached, which not only makes the base 101 of the U-shaped structure well fit the mounting position of the roller motor, but also reduces the space occupied by the loading platform 20. For example, in the embodiment of the present application, the new motor is transported to the vicinity of the mounting station, and the loading platform 20 on the base 101 of the U-shaped structure is detached, so that the base 101 of the U-shaped structure well fits the mounting position of the motor, thereby enabling the operator to smoothly fix the new motor to the mounting position, and effectively improving the replacement efficiency of the roller motor.

[0070] As shown in Figure 1 some embodiments, the other end of the boom 302 away from the connection end with the lifting rod 301 is provided with a lifting ring 3021, and the lifting ring 3021 is used for hoisting the motor. Further, the lifting ring 3021 can be fixed to the other end of the boom 302 away from the connection end with the lifting rod 301 by welding or one-piece forming. During the motor replacement process, the lifting ring 3021 can be used in cooperation with the inverted chain to ensure that the motor can be stably hoisted. One end of the inverted chain can be fixed to the lifting ring 3021, and the other end of the inverted chain is fixed to the motor.

[0071] In the embodiment of the present application, the motor replacement auxiliary device further comprises a rolling mechanism for driving the base 101 to move. As shown in Figure 1 some embodiments, the rolling mechanism comprises a first roller 401, a second roller 402 and a third roller 403, the first roller 401 is installed at the rear end of the base 101, and the second roller 402 and the third roller 403 are respectively installed at the front end of the base 101. Further, the first roller 401, the second roller 402 and the third roller 403 are universal rollers, which can enable the base 101 to move in different directions.

[0072] As shown in Figure 1 some embodiments, the motor replacement auxiliary device further comprises a handle 50, by which the base 101 can be stably pushed in different directions.

[0073] The motor replacement auxiliary device provided in the embodiment of the present application, in the motor replacement process, first stably hoists the new motor and loads it on the detachable loading platform 20, and transports it to the vicinity of the mounting station; then, detaches the loading platform 20, and hoists the old motor by the boom 302 and transports it away from the mounting position; finally, hoists the new motor to the mounting station by the boom 302, adjusts the height of the new motor to adapt to the mounting position, and fixes the new motor by the operator, to complete the replacement of the new motor. The use of the device makes the motor replacement process safe and efficient.

[0074] The motor replacement auxiliary device provided by the embodiment of the application can not only reduce the labor input and improve the motor replacement efficiency, but also avoid the situation that the operator is accidentally injured during the motor replacement process.

[0075] It should be emphasized that the motor replacement auxiliary device provided by the embodiment of the application is not only suitable for the replacement auxiliary operation of the roller motor, but also suitable for the replacement application scenarios of other motors, and is particularly suitable for the replacement auxiliary operation of the motor with a low installation position and a narrow space.

[0076] The above description is only a specific embodiment of the application, but the protection scope of the application is not limited thereto, and any modification, change or equivalent replacement made by the person skilled in the art without departing from the technical concept of the application, all the obtained embodiments belong to the protection scope of the claims of the application.

Claims

1. An electric motor replacement assisting device characterized by comprising: The utility model relates to a kind of motor loading device, including: Support structure; Loading platform, installed in the support structure, for loading motor; Lifting assembly, including: Lifting rod, movably connected to the support structure; Boom, one end movably connected to the lifting rod, the boom is movably connected to the support structure on the side close to its connection end with the lifting rod, the lifting rod is used to drive the boom to rotate, and the boom is used to hang the motor; When the lifting rod rises, it drives the boom to rotate downward, and when the lifting rod descends, it drives the boom to rotate upward.

2. The motor replacement assisting apparatus according to claim 1, characterized by The lifting assembly includes a connecting sleeve and a connecting block, the connecting sleeve is connected to the upper part of the lifting rod, the middle edge of the connecting block is movably connected to the connecting sleeve, the upper end of the connecting block is movably connected to one end of the boom, and the lower end of the connecting block is movably connected to the support structure.

3. The electric machine replacement assist device of claim 2, wherein, The lifting assembly further includes a first connecting piece, one end of the first connecting piece is movably connected to the upper end of the connecting block, one end of the boom is movably connected to the first connecting piece, and the other end of the first connecting piece is connected to the side of the boom away from its connection end with the first connecting piece;The side of the first connecting piece close to its connection end with the connecting block is movably connected to the support structure; The lifting assembly further includes a second connecting piece, one end of the second connecting piece is movably connected to the lower end of the connecting block, and the other end of the second connecting piece is movably connected to the support structure.

4. The motor replacement assisting apparatus according to any one of claims 1 to 3, characterized by, The lifting assembly includes a hydraulic cylinder, and the lower part of the lifting rod is movably connected to the hydraulic cylinder, which is used to drive the lifting rod to rise and fall.

5. The electric machine replacement assist device of claim 3, wherein, The support structure includes a support block, the side of the first connecting piece close to its connection end with the connecting block is movably connected to the support block, and the other end of the second connecting piece is movably connected to the support block.

6. The motor replacement assisting apparatus according to any one of claims 1 to 3, characterized by The support structure includes a base and a support column, and the support column is connected to the base.

7. The motor replacement assisting apparatus according to claim 6, characterized by The support structure further includes a first inclined strut and a second inclined strut, one end of the first inclined strut and one end of the second inclined strut are respectively connected to the support column, and the other end of the first inclined strut and the other end of the second inclined strut are respectively connected to the front end of the base.

8. The motor replacement assisting apparatus according to claim 6, characterized by The base is U-shaped, the shape of the loading platform is matched with the U-shaped base, and the loading platform is detachably mounted on the U-shaped base.

9. The motor replacement assisting apparatus according to any one of claims 1 to 3, characterized by The other end of the boom away from its connection end with the lifting rod is provided with a lifting ring, and the lifting ring is used to hang the motor.

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