A connection structure

Abstract

The utility model relates to the field of hoisting mechanism maintenance discloses a connecting structure for connecting hoisting drum device to mounting platform, hoisting drum device is provided with support hole, and the connecting structure includes fixed lug plate, adjusting support, drum connecting piece and lug plate connecting piece, fixed lug plate is connected to mounting platform and is provided with mounting hole, adjusting support is provided with a plurality of interval arrangement's connecting holes in vertical direction, drum connecting piece is used for penetrating support hole and arbitrary connecting hole in proper order, and lug plate connecting piece is used for connecting mounting hole and arbitrary connecting hole to adjust the height of hoisting drum device in vertical direction. The connecting structure can quickly and reliably support hoisting drum device, improves the safety of maintenance operation and forms protection to equipment, reduces hoisting cost and artificial maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of lifting mechanism maintenance technology, and specifically relates to a connection structure. Background Technology

[0002] Hoisting mechanisms are a common feature in most mining machinery, and they are key components of front shovel excavators. These mechanisms frequently require disassembly and maintenance, which is time-consuming and challenging. The hoisting drum assembly is primarily connected to the planetary reducer and side support of the hoisting mechanism. Both the planetary reducer and the side support are fixed to the mounting platform. When the planetary reducer needs to be removed for maintenance, to prevent the overturning force of the hoisting drum assembly from damaging the bearings, a crane must be used to continuously lift that side to keep the hoisting drum assembly horizontal during maintenance. Similarly, when the hoisting drum assembly support needs to be removed for maintenance, to prevent the overturning force from damaging the splines inside the output port of the planetary reducer, a crane must be used to continuously lift that side to keep the hoisting drum assembly horizontal during maintenance.

[0003] Therefore, whether the planetary reducer is disassembled for maintenance or the side support of the lifting drum is disassembled for maintenance, the lifting drum device needs to be hoisted to keep it horizontal and avoid damage. However, the hoisting is difficult and increases maintenance costs. Moreover, if the height of the lifting drum device needs to be adjusted, hoisting equipment is required, which is very inconvenient to operate. Utility Model Content

[0004] In view of at least one of the above-mentioned defects or deficiencies in the prior art, the present invention provides a connection structure and working machinery to achieve convenient and quick support for the drum device and height adjustment.

[0005] To achieve the above objectives, this utility model provides a connection structure for connecting a lifting drum device to an installation platform. The lifting drum device has a support hole, and the connection structure includes: A fixed ear plate is connected to the mounting platform and has mounting holes; The adjustable support has multiple spaced connection holes in the vertical direction; A reel connector is used to pass sequentially through the support hole and any one of the connecting holes; Ear plate connector, used to connect the mounting hole and any one of the connecting holes, to adjust the height of the lifting drum device in the vertical direction.

[0006] In some embodiments, the drum connector includes a flange section, a support section, and a connecting section arranged axially in sequence. The flange section is used to abut against the lifting drum device, the support section is used to pass through the support hole and the connecting hole in sequence, and the connecting section extends out of the connecting hole.

[0007] In some embodiments, the connecting holes include, from top to bottom, the following: The first connecting hole is used to connect with the support hole; Multiple second connecting holes, all of which are vertically arranged waist-shaped holes, are provided. The adjusting support is used to connect to the fixed ear plate through any one of the second connecting holes.

[0008] In some embodiments, the adjusting support is connected to a fixing sleeve, which is coaxially arranged with the first connecting hole and is used for threaded connection with the connecting section.

[0009] In some embodiments, the support segment is used to pass through the support hole and the first connecting hole in sequence and to exit through the first connecting hole. The fixing sleeve includes a first end and a second end arranged axially. The first end is used to receive the support segment that passes through the first connecting hole, and the second end is provided with an internal thread for connecting with the connecting segment.

[0010] In some embodiments, the plurality of second connection holes are arranged in multiple rows in the horizontal direction of the adjusting support.

[0011] In some embodiments, one end of the ear plate connector is used to abut against the adjusting support, and the other end is used to connect the mounting hole and any one of the second connecting holes.

[0012] In some embodiments, the diameter of the support segment is larger than the diameter of the connecting segment.

[0013] In some embodiments, the reel connector further includes: A protruding section is coaxially connected to the retaining edge section, and the shape of the protruding section is adapted to the opening groove of the wrench.

[0014] In some embodiments, the mounting hole is a threaded hole, and the ear plate connector is threadedly connected to the mounting hole.

[0015] Through the above technical solution, when the planetary reducer or the side support of the lifting drum needs to be disassembled and repaired, the connecting structure can quickly and reliably support the lifting drum device, replacing the traditional solution that requires long-term suspension by hoisting equipment. This eliminates the risk of drum shaft bending, bearing damage, or structural deformation caused by uneven sling tension or uneven hoisting, improving the safety of maintenance operations and protecting the equipment; reducing hoisting costs and labor maintenance costs; operators do not need to coordinate hoisting resources and can independently and quickly make fine adjustments to the height, creating optimal space for maintenance operations and significantly shortening equipment downtime; at the same time, it also has good versatility and adaptability, providing support solutions for different models of lifting drum devices, and the height of the lifting drum device can be adjusted as needed.

[0016] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings: Figure 1 This is a schematic diagram of the connection structure in this utility model; Figure 2 for Figure 1 Enlarged view of section A; Figure 3 This is a side view of the lifting drum device in this utility model; Figure 4 This is a cross-sectional view of the connection structure in this utility model; Figure 5 This is a schematic diagram of the structure of the adjustable support in this utility model; Figure 6 This is another structural schematic diagram of the adjustable support in this utility model; Figure 7 This is a schematic diagram of the structure of the drum connector in this utility model; Figure 8 This is another structural schematic diagram of the drum connector in this utility model; Figure 9 This is a connection diagram of the lifting mechanism.

[0018] Explanation of reference numerals in the attached figures 1. Lifting drum device; 11. Support hole; 2. Mounting platform; 21. Fixed ear plate; 211. First fixed ear plate; 212. Second fixed ear plate; 22. Adjusting support; 221. Connecting hole; 2211. First connecting hole; 2212. Second connecting hole; 23. Drum connector; 23a. Side guard section; 23b. Support section; 23c. Connecting section; 23d. Protruding section; 24. Ear plate connector; 241. Gasket; 25. Fixing sleeve; 3. Planetary reducer; 4. Lifting drum side support. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and exemplary embodiments.

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model provides a connection structure for connecting a lifting drum device 1 to an installation platform 2. The lifting drum device 1 has a support hole 11. The connection structure includes a fixed ear plate 21, an adjusting support 22, a drum connector 23, and an ear plate connector 24. The fixed ear plate 21 is connected to the installation platform 2 and has an installation hole. The adjusting support 22 has multiple spaced connection holes 221 in the vertical direction. The drum connector 23 is used to pass through the support hole 11 and any one of the connection holes 221 in sequence. The ear plate connector 24 is used to connect the installation hole and any one of the connection holes 221 to adjust the height of the lifting drum device 1 in the vertical direction.

[0022] The fixed ear plate 21 is fixed to the mounting platform 2 by welding or bolting, and has one or more mounting holes for providing connection points for the foundation. The adjusting support 22 has multiple evenly spaced connection holes 221 in the vertical direction of its main body, which are used for height adjustment. The connecting parts include a drum connecting part 23 and an ear plate connecting part 24. The drum connecting part 23 passes through a pre-drilled support hole 11 on the lifting drum device 1 and a connection hole 221 on the adjusting support 22, thereby temporarily fixing the lifting drum device 1 to the adjusting support 22. The ear plate connecting part 24 is usually a long bolt or pin, which passes through the mounting hole of the fixed ear plate 21 and another connection hole 221 of the adjusting support 22 to achieve a stable connection between the adjusting support 22 and the mounting platform 2. Through the cooperation of the adjusting support 22, the fixed ear plate 21 and the connecting parts, the entire lifting drum device 1 is supported and fixed. By selecting different combinations of connection holes 221 at different heights on the adjusting support 22, the vertical position of the lifting drum device 1 can be flexibly adjusted.

[0023] When the planetary reducer 3 or the lifting drum side support 4 needs to be disassembled for maintenance, the connecting structure can quickly and reliably support the lifting drum device 1, replacing the traditional solution that requires long-term suspension by hoisting equipment. This eliminates the risk of drum shaft bending, bearing damage, or structural deformation caused by uneven sling tension or non-level hoisting, improving the safety of maintenance operations and protecting the equipment. It also reduces hoisting costs and labor maintenance costs. Operators do not need to coordinate hoisting resources and can independently and quickly make fine adjustments to the height, creating optimal space for maintenance operations and significantly shortening equipment downtime. At the same time, it has good versatility and adaptability, providing support solutions for different models of lifting drum devices 1, and the height of the lifting drum device 1 can be adjusted as needed.

[0024] In some implementations, such as Figure 4 and Figure 7 As shown, the drum connector 23 includes a flange section 23a, a support section 23b, and a connecting section 23c arranged axially in sequence. The flange section 23a is used to abut against the lifting drum device 1. The support section 23b is used to pass through the support hole 11 and the connecting hole 221 in sequence. The connecting section 23c extends out of the connecting hole 221. The diameter of the flange section 23a is larger than that of the support hole 11 of the lifting drum device 1, so that it can abut against the outer end face of the lifting drum device 1 during installation, thereby axially limiting the lifting drum device 1. The support section 23b is the core load-bearing and force-transmitting part, which can form a tight clearance fit or transition fit with both the support hole 11 of the lifting drum device 1 and the connecting hole 221 on the adjusting support 22, thereby accurately inserting into and passing through these two holes to ensure that the force can be transmitted smoothly. The connecting section 23c can extend a sufficient length from the connecting hole 221 of the adjusting support 22 to install a lock nut, cotter pin, or other anti-loosening device.

[0025] The three-section structure of the drum connector 23 enables precise axial positioning and reliable locking of the lifting drum device 1. The flange section 23a effectively prevents the lifting drum device 1 from accidentally loosening or displacing in the axial direction, ensuring the stability of the support. The tight fit between the support section 23b and the hole not only bears the gravity load of the lifting drum device 1, but also effectively resists the radial force and bending moment that may be generated during operation, avoiding impact, vibration and wear caused by excessive fit clearance, and protecting the support hole 11 and the connection hole 221 of the adjusting support 22 of the lifting drum device 1. The connecting section 23c provides sufficient operating space for installing standard fasteners (such as nuts), making the locking and disassembly of the drum connector 23 very convenient, facilitating on-site maintenance and adjustment, improving maintenance efficiency and ensuring the safety of the connection.

[0026] In some implementations, such as Figure 5As shown, the connecting hole 221 includes a first connecting hole 2211 and a plurality of second connecting holes 2212 arranged sequentially from top to bottom. The first connecting hole 2211 is used to connect with the support hole 11; the plurality of second connecting holes 2212 are all vertically arranged oblong holes, and the adjusting support 22 is used to connect with the fixed ear plate 21 through any one of the second connecting holes 2212. Specifically, the uppermost first connecting hole 2211 can be a round hole, the diameter of which matches the support section 23b of the drum connector 23, and is specifically used to support the core weight of the lifting drum device 1. Below the first connecting hole 2211, the plurality of second connecting holes 2212 are vertically extending oblong holes, serving as channels for the adjusting support 22 to connect with the lower fixed ear plate 21. When the height needs to be adjusted, the ear plate connector 24 can be fastened at any position within the vertical length range of the second connecting hole 2212. The first connecting hole 2211 and the second connecting hole 2212 can be set on the central axis of the adjusting support 22 to stabilize the force on the adjusting support 22.

[0027] The second connecting hole 2212 enables fine-tuning based on coarse adjustment (by selecting different sets of second connecting holes 2212 at different heights). Because the oblong hole provides a continuous adjustable stroke in the vertical direction, the operator can slightly move the adjusting support 22 up and down before final locking, thus facilitating precise calibration of the final height and horizontal position of the lifting drum device 1, ensuring it is in the optimal horizontal working position. The oblong hole eliminates the hassle of repeatedly disassembling and reselecting connecting holes for precision, improving the efficiency of installation, maintenance, and adjustment.

[0028] In some implementations, such as Figure 6 As shown, the adjusting support 22 is connected to a fixing sleeve 25, which is coaxially arranged with the first connecting hole 2211. The fixing sleeve 25 is used for threaded connection with the connecting section 23c. The fixing sleeve 25 can be welded to the adjusting support 22, and its inner hole is coaxially aligned with the first connecting hole 2211. After the connecting section 23c of the drum connector 23 passes through the first connecting hole 2211 of the lifting drum device 1 and the mounting hole of the adjusting support 22, it is directly screwed into the internal thread of the fixing sleeve 25, and the threaded pair achieves fastening. The fixing sleeve 25 is directly fixed to the adjusting support 22, avoiding wear and damage to the adjusting support 22 and the fixing sleeve 25 caused by repeated disassembly and assembly of the fixing sleeve 25, protecting the main structure, and preventing the fixing sleeve 25 from loosening or being lost; the threaded connection provides a strong and precisely controllable preload force, which can ensure that the drum connector 23, the lifting drum device 1 and the adjusting support 22 fit tightly together to form a rigid whole, effectively preventing loosening under load or vibration.

[0029] In some implementations, such as Figure 4As shown, the support section 23b is used to pass through the support hole 11 and the first connecting hole 2211 in sequence and exit through the first connecting hole 2211. The fixing sleeve 25 includes a first end and a second end arranged axially. The first end is used to accommodate the support section 23b that exits through the first connecting hole 2211, and the second end is provided with internal threads for connection with the connecting section 23c. The length of the support section 23b is increased, and the length of the support section 23b is longer than the axial length of the support hole 11 and the first connecting hole 2211, so that it can pass through both holes and exit through them. The first end of the fixing sleeve 25 is an inner cavity, and the diameter of the first end matches the support section 23b of the drum connector 23, which is used to accommodate and guide the support section 23b that exits through the first connecting hole 2211, ensuring that the drum connector 23 can maintain accurate alignment when passing through the adjusting support 22 and avoid misalignment. The second end of the fixing sleeve 25 is machined with internal threads for engagement and tightening with the connecting section 23c at the end of the drum connector 23.

[0030] By increasing the length of the support section 23b, the load-bearing capacity of the support section 23b is enhanced. The first end of the fixed sleeve 25 serves as a guide and radial support, ensuring that the drum connector 23 can be smoothly and steadily guided to the preset position during installation, facilitating assembly operations in narrow spaces. The threaded connection function is concentrated at the second end, so that all the thread preload and vibration stress are concentrated on the fixed sleeve 25, effectively protecting the first connection hole 2211 on the body of the adjusting support 22 from wear and deformation. This integrated fixed sleeve 25 structure, through the combination of guidance and threaded locking force, ensures that the lifting drum device 1 can maintain a stable and reliable connection under various working conditions, while reducing maintenance costs.

[0031] In some implementations, such as Figure 5As shown, multiple second connecting holes 2212 are arranged in multiple rows in the horizontal direction of the adjusting support 22. On the adjusting support 22, vertical oblong holes form multiple rows from left to right, each row containing multiple oblong holes at different heights. The vertical axis of the first connecting hole 2211 coincides with the central axis of the adjusting support 22, and the multiple rows of second connecting holes 2212 are symmetrical about the central axis of the adjusting support 22. When connecting, the lug connector 24 can be fastened not only at any height in the vertical direction of any oblong hole, but also selectively fastened in oblong holes in different rows, thus providing horizontal positional freedom for the connection point between the adjusting support 22 and the fixed lug 21, enhancing the adaptability of the entire connection structure to different installation conditions and engineering errors. When there is a slight deviation in the horizontal position of the fixed ear plate 21 on the mounting platform 2, or when fine-tuning of the horizontal position is required for different models of lifting drum devices 1, there is no need to reprocess or adjust the fixed ear plate 21. Only a suitable row of oblong holes in the horizontal direction needs to be connected, thus achieving horizontal adjustment capability. In the embodiment provided by this utility model, the adjusting support 22 includes a circular first connecting hole 2211. Below the first connecting hole 2211, two rows of second connecting holes 2212 are provided. Each row of second connecting holes 2212 has two second connecting holes 2212, i.e., the second connecting holes 2212 are arranged in a 2×2 square array. The vertical axis of the first connecting hole 2211 coincides with the central axis of the adjusting support 22, and the two rows of second connecting holes 2212 are symmetrically arranged on the adjusting support 22. When the second connecting holes 2212 are connected to the mounting holes, two second connecting holes 2212 in the same row can be connected to the mounting holes accordingly, ensuring the stress stability of the adjusting support 22.

[0032] In some implementations, such as Figure 2 As shown, one end of the ear plate connector 24 abuts against the adjusting support 22, and the other end connects to the mounting hole and any one of the second connecting holes 2212. The ear plate connector 24 can be a bolt, with one end having a head or washer, the diameter of which is larger than the width of the second connecting hole 2212, allowing it to stably abut against the outer surface of the adjusting support 22. The other end of the bolt passes sequentially through a selected second connecting hole 2212 on the adjusting support 22 and the mounting hole on the fixed ear plate 21, and is finally tightened with a nut on the other side of the fixed ear plate 21. This effectively clamps the adjusting support 22 between the head of the ear plate connector 24 and the fixed ear plate 21, forming a stable and reliable rigid triangular support. The ear plate connector 24 can be a standard fastener, which is convenient to install and disassemble without special tools, significantly improving the efficiency of maintenance work, reducing maintenance costs, and achieving fast, safe, and reliable maintenance support.

[0033] In some implementations, such as Figure 7As shown, the diameter of the support section 23b is larger than that of the connecting section 23c. The support section 23b, as the core load-bearing and positioning component, is designed with a larger diameter to ensure a precise clearance fit or transition fit with the support hole 11 of the lifting drum device 1 and the first connecting hole 2211 of the adjusting support 22, thereby achieving accurate alignment and effective transmission of radial load. The main function of the connecting section 23c is to perform a threaded connection for axial locking; its diameter is smaller than that of the support section 23b, allowing it to easily pass through the aforementioned holes and screw into the threads of the fixing sleeve 25. A reliable axial positioning shoulder is naturally formed between the support section 23b and the connecting section 23c. When the drum connector 23 is installed in place, the stepped surface between the support section 23b and the connecting section 23c will tightly abut against the end face of the fixing sleeve 25, thereby limiting the insertion depth of the drum connector 23 and preventing it from going too deep. The larger diameter support section 23b provides a larger shear resistance area and bending section modulus, which significantly enhances the structural stiffness and strength of the connector when subjected to heavy loads and working vibrations of the lifting drum device 1. The smaller diameter connecting section 23c is conducive to machining threads of sufficient strength and reduces stress concentration at the threaded parts, which optimizes the stress state, facilitates assembly, and improves the reliability, durability and safety of the entire connection structure.

[0034] In some implementations, such as Figure 7 and Figure 8 As shown, the reel connector 23 also includes a protruding section 23d, which is coaxially connected to the flange section 23a. The shape of the protruding section 23d is adapted to the slot of the wrench. The protruding section 23d is typically designed as a standard polygonal prism shape, such as a hexagonal or square head, with its dimensions and contours precisely matching the slots of common wrenches or sockets. During assembly, the operator can use a wrench to hold the protruding section 23d and rotate it to tighten the connecting section 23c, making the connecting section 23c threadedly connected to the fixed retaining sleeve 25. The protruding section 23d provides a point of leverage for the tool, facilitating the threaded connection to achieve the designed tightness, which not only improves installation efficiency and convenience but also ensures the reliability of the connection, avoiding the safety hazard of loosening under heavy load and vibration due to insufficient tightening. It also makes subsequent disassembly and maintenance work simpler and safer.

[0035] In some embodiments, the mounting hole is a threaded hole, and the ear plate connector 24 is threadedly connected to the mounting hole. Specifically, during assembly, one end of the ear plate connector 24 passes through the oblong hole of the adjusting support 22 and abuts against the adjusting support 22 through a larger washer 241. The threaded end of the ear plate connector 24 is directly screwed into the threaded hole of the fixed ear plate 21. The preload generated by tightening the threads tightly presses the adjusting support 22 onto the fixed ear plate 21. The fixed ear plate 21 not only serves as a mounting base but also as an active connecting component with a standard threaded interface. This simplifies the assembly structure, eliminates the need to install a nut on the other side of the fixed ear plate 21, reduces structural thickness and installation space requirements, making it particularly suitable for compact spaces. The threaded connection provides a strong and controllable axial locking force, which can firmly combine the adjusting support 22, the fixed ear plate 21, and the mounting platform 2 into a rigid whole. This effectively resists the overturning moment and vibration generated by the load of the lifting drum device 1, prevents loosening of the connection, and ensures the high stability and safety of the support. At the same time, this connection method makes the disassembly and assembly of the ear plate connector 24 more direct and convenient, requiring only a single tool to tighten the bolt, improving maintenance efficiency. Its reliable anti-loosening characteristics further reduce maintenance needs and safety risks.

[0036] The hoisting mechanism is a key component of a front shovel excavator, typically mounted on a slewing platform, i.e., the aforementioned mounting platform 2. The hoisting mechanism mainly includes a hoisting drum assembly 1, a planetary reducer 3, and a hoisting drum side support 4. The hoisting drum assembly 1 includes a hoisting drum shaft, a hoisting drum, and bearings. The output port of the planetary reducer 3 is connected to the involute spline on the hoisting drum shaft and supports one side of the hoisting drum assembly 1. The hoisting drum is fixed to the hoisting drum shaft, and the bearing is fitted onto the hoisting drum shaft. The hoisting drum side support 4 serves as the bearing housing, supporting the other side of the entire hoisting drum assembly 1. When the planetary reducer 3 or the hoisting drum side support 4 needs to be removed for maintenance, to prevent the tilting force of the hoisting drum assembly 1 from damaging the bearings or the spline inside the output port of the planetary reducer 3, the hoisting drum assembly 1 must be kept horizontal using a connecting structure during maintenance of the planetary reducer 3 or the hoisting drum side support 4.

[0037] Specifically, such as Figure 1 and Figure 9As shown, the mounting platform 2 can be connected to four fixing lugs 21. These four fixing lugs 21 are divided into two first fixing lugs 211 and two second fixing lugs 212. The two first fixing lugs 211 are used to connect to the planetary reducer 3, and the two second fixing lugs 212 are used to connect to the lifting drum side support 4. The two first fixing lugs 211 and the two second fixing lugs 212 can also be connected using reinforcing plates. Both ends of the first fixing lugs 211 and the second fixing lugs 212 have upwardly extending extensions, which are connected to the planetary reducer 3 and the lifting drum side support 4, respectively. The height of the extensions can be set as needed. Each of the first fixed ear plate 211 and the second fixed ear plate 212 has at least one mounting hole in its middle, and is connected to the two adjusting supports 22 through two mounting holes respectively. Among the two first fixed ear plates 211 and the two second fixed ear plates 212, only the innermost one of the first fixed ear plates 211 and the innermost one of the second fixed ear plates 212 are connected to the adjusting support 22. That is, the distance between the innermost one of the first fixed ear plates 211 and the innermost one of the second fixed ear plates 212 is exactly the same as the axial length of the lifting drum device 1. The two sides of the lifting drum device 1 are supported by the two adjusting supports 22 to keep it stable and horizontal. Normally, the adjusting supports can be removed and stored in the toolbox as a tool. They are only used when maintaining the planetary reducer 3 or the side support 4 of the lifting drum.

[0038] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0041] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A connection structure, characterized in that, For connecting the lifting drum device (1) to the mounting platform (2), the lifting drum device (1) has a support hole (11), and the connection structure includes: A fixed ear plate (21) is connected to the mounting platform (2) and has mounting holes; The adjusting support (22) has multiple spaced connecting holes (221) in the vertical direction. A reel connector (23) is used to pass through the support hole (11) and any one of the connecting holes (221) in sequence. Ear plate connector (24) is used to connect the mounting hole and any one of the connecting holes (221) to adjust the height of the lifting drum device (1) in the vertical direction.

2. The connection structure according to claim 1, characterized in that, The drum connector (23) includes a flange section (23a), a support section (23b) and a connecting section (23c) arranged axially in sequence. The flange section (23a) is used to abut against the lifting drum device (1). The support section (23b) is used to pass through the support hole (11) and the connecting hole (221) in sequence. The connecting section (23c) passes out from the connecting hole (221).

3. The connection structure according to claim 2, characterized in that, The connecting holes (221) include the following, arranged sequentially from top to bottom: The first connecting hole (2211) is used to connect with the support hole (11); Multiple second connecting holes (2212) are all vertically arranged waist-shaped holes. The adjusting support (22) is used to connect to the fixed ear plate (21) through any one of the second connecting holes (2212).

4. The connection structure according to claim 3, characterized in that, The adjusting support (22) is connected to a fixing sleeve (25), which is coaxially arranged with the first connecting hole (2211) and is used to be threadedly connected to the connecting section (23c).

5. A connection structure according to claim 4, characterized in that, The support segment (23b) is used to pass through the support hole (11) and the first connecting hole (2211) in sequence and to pass out from the first connecting hole (2211). The fixing sleeve (25) includes a first end and a second end arranged axially. The first end is used to accommodate the support segment (23b) passing out from the first connecting hole (2211). The second end is provided with an internal thread for connecting with the connecting segment (23c).

6. A connection structure according to any one of claims 3 to 5, characterized in that, Multiple second connection holes (2212) are arranged in multiple rows in the horizontal direction of the adjusting support (22).

7. A connection structure according to any one of claims 3 to 5, characterized in that, One end of the ear plate connector (24) is used to abut against the adjusting support (22), and the other end is used to connect the mounting hole and any one of the second connecting holes (2212).

8. A connection structure according to any one of claims 2 to 5, characterized in that, The diameter of the support segment (23b) is larger than the diameter of the connecting segment (23c).

9. A connection structure according to any one of claims 2 to 5, characterized in that, The reel connector (23) also includes: A protruding section (23d) is coaxially connected to the retaining section (23a), and the shape of the protruding section (23d) is adapted to the opening groove of the wrench.

10. A connection structure according to any one of claims 1 to 5, characterized in that, The mounting hole is a threaded hole, and the ear plate connector (24) is threadedly connected to the mounting hole.

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