Locking connecting device and hoisting equipment

By designing an adjustable spacing locking connection device, the contact between the clamps and the I-shaped steel structure is solved, and the connection efficiency is significantly improved.

CN222498352UActive Publication Date: 2025-02-18SHANGYU JINGHONG MASCH MFG CO LTD
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Patent Information

Application Number
CN202420920749.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-29
Publication Date
2025-02-18
Estimated Expiration
2034-04-29

AI Technical Summary

Technical Problem

In the prior art, the connection efficiency of the locking connection device and the connecting portion with the I-shaped steel structure is low, mainly due to the connection complexity caused by welding deformation.

Method used

A locking connection device including a base plate, a side plate and a clamp is designed. The installation spacing between the base plate and the side plate is adjustable. The clamping member can contact the outer surface of the connecting part through the base plate and the side plate to complete the locking. Tightly connect.

Benefits of technology

By adjusting the spacing between the bottom plate and the side plate and the position of the clamps, it can adapt to the welding deformation of the connection part, and achieve leveling and tightening of the bottom plate and the side plate, simplifying the connection process and improving the connection efficiency.

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Abstract

According to the technical scheme, the connecting device comprises a bottom plate, a side plate and a clamping piece, and the bottom plate comprises a positioning face; the side plates are connected with the bottom plate, the installation distance between the side plates and the positioning face is adjustable, the multiple clamping pieces are movably connected with the bottom plate and / or the side plates, the clamping pieces can penetrate through the bottom plate and / or the side plates to abut against the outer surface of a connecting part, and the clamping pieces are movably connected with the bottom plate and / or the side plates to abut against the outer surface of the connecting part. Locking connection with the connecting part is completed; the technical problem that the connecting efficiency of an existing locking connecting device and a connecting part with an I-shaped steel structure is low is solved, and the technical effect of improving the connecting efficiency of the locking connecting device and the connecting part with the I-shaped steel structure is achieved.
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Description

Technical Field

[0001] The present application relates to the technical field of equipment assembly, and in particular to a locking connection device and a lifting device. Background Art

[0002] In the prior art, due to the high load-bearing capacity of I-beams, they are ideal for supporting and connecting external equipment. When heavy equipment needs to be hoisted, I-beam structures or I-beam frames are usually used as connecting parts to utilize their strength and stability to ensure the safety of the hoisting process.

[0003] However, in reality, most I-beam components or frames are assembled by welding, and the welding process will cause the I-beam to deform. Therefore, when existing lifting equipment completes the connection with the I-beam, it is usually necessary to process, punch holes, and gasket the surface of the I-beam structure. These operations make the connection process extremely complicated and reduce the overall working efficiency of the equipment.

[0004] Therefore, the problem of the prior art is that the connection efficiency between the locking connection device and the connection part with the I-beam structure is low. Utility Model Content

[0005] The present application provides a connection device and lifting equipment, which solves the technical problem of low connection efficiency between the existing locking connection device and the connection part with the I-beam structure, and achieves the technical effect of improving the connection efficiency between the locking connection device and the connection part with the I-beam structure.

[0006] A locking connection device and lifting equipment provided in the present application adopt the following technical scheme, including a bottom plate, a side plate and a clamping member, wherein the bottom plate includes a positioning surface; a side plate, wherein the side plate is connected to the bottom plate, and the installation spacing between the side plate and the positioning surface is adjustable, and the side plates are provided in plurality, and the plurality of side plates and the bottom plate are combined to form a accommodating space suitable for the I-beam structure; and a plurality of clamping members, wherein the clamping members are movably connected to the bottom plate and / or the side plate, and the clamping members can penetrate the bottom plate and / or the side plate and abut against the outer surface of the connecting portion to complete the locking connection with the connecting portion.

[0007] Preferably, the locking connection device further comprises a connecting rod, and the connecting rod is threadedly connected to the bottom plate and the side plate.

[0008] Preferably, the bottom plate is provided with a first threaded hole, the side plate is provided with a second threaded hole coaxially arranged with the first threaded hole, and the inner thread of the first threaded hole and the inner thread of the second threaded hole are arranged equidistantly in opposite directions.

[0009] Preferably, the side plate includes a limiting portion, the limiting portion is spaced apart from the positioning surface, and the limiting portion can abut against the connecting portion.

[0010] Preferably, the side panels are mounted opposite to the bottom plate, and the adjacent two side panels and the bottom plate arranged opposite to each other enclose the accommodating space.

[0011] Preferably, the limiting portion includes a first plane and a second plane, and the first plane and the second plane form a clamping angle adapted to the outer contour of the I-beam structure.

[0012] Preferably, the clamping member includes a first clamping member, which is movably connected to the base plate and has the freedom to move along a first direction. The first clamping member can move along the first direction to abut against the connecting portion until the connecting portion is tightly pressed against the limiting portion.

[0013] Preferably, the clamping member includes a second clamping member, the second clamping member is movably connected to the side plate, the second clamping member has freedom of movement along a second direction, and the second clamping member can move along the second direction to abut against the connecting portion.

[0014] Preferably, the locking connection device further comprises a mounting portion, and the mounting portion is connected to the base plate.

[0015] The present application also provides a lifting device, including: a guide rail assembly, a mounting frame and the aforementioned locking connection device, wherein the guide rail assembly includes at least one guide member, and the guide member has the freedom of movement along the length direction of the guide rail assembly; the mounting frame is connected to the guide member, and the mounting frame includes at least one mounting block; the base plate of the locking connection device is connected to the mounting block through a mounting portion.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. The present application provides a locking connection device, so that when the connection part with the I-beam structure has welding deformation, the locking connection device can adapt to the connection deformation of the connection part by adjusting the installation spacing between the bottom plate and the side plate, complete the leveling of the bottom plate, and synchronously adjust multiple clamps at the same time. The side plates are leveled and the side plates and the bottom plate are tightened by the clamps. The above operations can complete the clamping of the connection part with the I-beam structure in the case of welding deformation. The locking connection method of the device is simple, and there is no need to set up additional leveling and clamping operations, which greatly increases the connection efficiency between the locking connection device and the connection part with the I-beam structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a schematic diagram of the axial direction structure of the locking connection device in the embodiment of the utility model:

[0019] Figure 2 It is a schematic diagram of the lateral structure of the connection between the locking connection device and the I-beam structure in the embodiment of the utility model;

[0020] Figure 3 It is a front view of the locking connection device in the embodiment of the utility model;

[0021] Figure 4 It is a front sectional view of the connection between the locking connection device and the I-beam structure in the embodiment of the utility model;

[0022] Figure 5 Schematic diagram of the axial direction structure of the connection between the locking connection device and the I-beam structure in the embodiment of the utility model

[0023] Figure 6 This is a schematic diagram of the forward structure of the hoisting device in the embodiment of the utility model;

[0024] Figure 7 It is a schematic diagram of the lateral structure of the lifting equipment in the embodiment of the utility model.

[0025] Explanation of the accompanying drawings: 100, bottom plate; 110, positioning surface; 120, first threaded hole; 200, side plate; 210, second threaded hole; 220, limiting portion; 221, first plane; 222, second plane; 300, accommodating space; 400, clamping member; 410, first clamping member; 420, second clamping member; 500, connecting portion; 510, I-beam structure; 600, connecting rod; 700, mounting portion; 800, guide rail assembly; 810, guide member; 900, mounting frame; 910, mounting block. DETAILED DESCRIPTION

[0026] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of this application, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0027] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] In the prior art, due to the high load-bearing capacity of I-beams, they are ideal for supporting and connecting external equipment. When heavy equipment needs to be hoisted, I-beam structures or I-beam frames are usually used as connecting parts to utilize their strength and stability to ensure the safety of the hoisting process.

[0029] However, in reality, most I-beam components or frames are assembled by welding, and the welding process will cause the I-beam to deform. Therefore, when existing lifting equipment completes the connection with the I-beam, it is usually necessary to process, punch holes, and gasket the surface of the I-beam structure. These operations make the connection process extremely complicated and reduce the overall working efficiency of the equipment.

[0030] To solve the above problems, the present application provides a locking connection device, including: a base plate 100, a side plate 200 and a clamping member 400, the base plate 100 includes a positioning surface 110, the side plate 200 is connected to the base plate 100, the installation spacing between the side plate 200 and the positioning surface 110 is adjustable, the side plate 200 has a plurality of side plates, and the plurality of side plates 200 and the base plate 100 are enclosed to form a accommodating space 300 suitable for an I-beam structure 510: the clamping member 400 has a plurality of clamping members 400, the clamping member 400 is movably connected to the base plate 100 and / or the side plate 200, the clamping member 400 can penetrate the base plate 100 and / or the side plate 200 and abut against the outer surface of the connecting portion 500 to complete the clamping of the connecting portion 500.

[0031] Specifically, the bottom plate 100 is a metal plate, and the bottom plate 100 includes a positioning surface 110, which is a plane and is used to abut against the top portion of the I-beam for positioning; the side plate 200 is also made of metal material, and the side plate 200 and the bottom plate 100 are detachably connected, and the connection method is one of multiple connection methods such as screw connection, telescopic rod connection, elastic connection, etc., so the installation spacing between the side plate 200 and the positioning surface 110 can be adjusted.

[0032] In the present application, there are multiple side panels 200, and the multiple side panels 200 are all connected to the bottom plate 100 to enclose a accommodating space 300. The formed accommodating space 300 is adapted to the connecting portion 500 with the I-beam structure 510, so the connecting portion 500 can be placed in the accommodating space 300; since the installation spacing between the aforementioned side panel 200 and the positioning surface 110 can be adjusted, it can be imagined that the size of the accommodating space 300 can also be adjusted. During installation, the spacing is first increased so that the locking connection device is mounted on the outside of the connecting portion 500, and then the preliminary leveling or clamping can be completed by reducing the spacing.

[0033] In the present application, the clamp 400 is made of a hard material, preferably a metal material; in one embodiment, the clamp 400 is preferably a threaded rod with a thread, and the front end of the threaded rod is provided with an abutment portion for abutting against the surface of the I-beam structure 510. The clamp 400 is arranged through the bottom plate 100 and the side plate 200, and the bottom plate 100 and the side plate 200 are provided with threaded holes adapted to the clamp 400. The clamp 400 can pass through the threaded holes to complete the leveling and tightening of the side plate 200 and the bottom plate 100, so as to complete the locking operation with the connecting portion 500. It is conceivable that the clamp 400 can also have other forms, and the clamp 400 can be of other shapes, or can only pass through one of the bottom plate 100 or the side plate 200. When the connection portion 500 with the I-beam structure 510 is deformed by welding, the locking connection device in the present application can adapt to the connection deformation of the connection portion 500 by adjusting the installation spacing between the bottom plate 100 and the side plate 200, complete the leveling of the bottom plate 100, and synchronously adjust multiple clamps 400 at the same time. The leveling of the side plate 200 and the tightening of the side plate 200 and the bottom plate 100 are completed by the clamps 400. The above operations can complete the clamping of the connection portion 500 with the I-beam structure 510 in the case of welding deformation. The locking connection method of the device is simple, and there is no need to set up additional leveling and clamping operations, which greatly increases the connection efficiency between the locking connection device and the connection portion 500 with the I-beam structure 510.

[0034] Furthermore, the locking connection device also includes a connecting rod 600, and the connecting rod 600 is threadedly connected to the base plate 100 and the side plate 200; in one embodiment, the base plate 100 is fixedly arranged, and the side plate 200 has a degree of freedom of movement arranged along the thickness direction of the base plate 100. The base plate 100 and the side plate 200 are both threadedly connected with bolts, and the side plate 200 can be controlled to approach or move away from the base plate 100 by rotating the bolts. Since the side plate 200 and the positioning surface 110 on the base plate 100 are installed at an interval, the interval between the side plate 200 and the base plate 100 can be selected according to the specific model of the I-shaped structure, and it is also convenient to adjust.

[0035] Furthermore, the bottom plate 100 is provided with a first threaded hole 120, and the side plate 200 is provided with a second threaded hole 210 coaxially arranged with the first threaded hole 120, and the internal thread of the first threaded hole 120 and the internal thread of the second threaded hole 210 are arranged in the same direction and equidistantly or in the opposite direction; in one embodiment, the bottom plate 100 is provided with a first threaded hole 120, and the side plate 200 is provided with a second threaded hole 210 coaxially arranged with the first threaded hole 120, and the internal thread of the first threaded hole 120 and the internal thread of the second threaded hole 210 are arranged equidistantly and in the same direction. In this embodiment, the bottom plate 100 is fixedly arranged, and the side plate 200 has a degree of freedom of movement, and the side plate 200 can be pulled close to the bottom plate 100 by rotating the bolt. In another embodiment, the internal thread of the first threaded hole 120 and the internal thread of the second threaded hole 210 are arranged equidistantly and in the opposite direction, and the thread on the bolt connecting the first threaded hole 120 and the second threaded hole 210 is the same. When the two threads are arranged in opposite directions, the two can be synchronously approached or separated by the rotation of the bolt. It is conceivable that the thread of the bolt may also be adjusted to achieve the aforementioned effect, as long as the side plate 200 can be moved closer to or farther away from the bottom plate 100 .

[0036] Please refer to Figure 1-2 The side plate 200 includes a limiting portion 220, which is spaced apart from the positioning surface 110, and the limiting portion 220 can abut against the connecting portion 500. Specifically, the side plate 200 includes a limiting portion 220, which is spaced apart from the positioning surface 110, leaving a space for the I-beam structure 510 to enter, and the limiting portion 220 can be matched with the top portion of the I-beam structure 510, that is, the limiting portion 220 includes at least one protruding abutting surface, and the limiting surface abuts against the top structure of the I-beam to complete the limiting of the I-beam structure 510.

[0037] Please refer to Figure 3-4 , the side panels 200 are installed opposite to the bottom plate 100, and the adjacent side panels 200 and the bottom plate 100 arranged opposite to each other enclose a receiving space 300. Specifically, in one embodiment, two side panels 200 of the same size are arranged opposite to each other on the bottom plate 100, and the two side panels 200 are provided with the same threaded holes for the clamping member 400 to pass through; the side panels 200 arranged opposite to each other can better adapt to the I-beam structure 510, and the clamping member 400 can tighten the I-beam structure 510 from the left and right sides, so that the force on the I-beam structure 510 is more uniform, and the above-mentioned limiting portion 220 can better complete the clamping operation, while improving the connection efficiency.

[0038] Please refer to Figure 1 The limiting portion 220 includes a first plane 221 and a second plane 222 , and the first plane 221 and the second plane 222 form a clamping angle adapted to the outer contour of the connecting portion 500 .

[0039] In one embodiment, the first plane 221 is set to be perpendicular to the positioning surface 110, and the second plane 222 is parallel to the positioning surface 110. The first plane 221 and the second plane 222 are connected to form a vertical angle. Since the I-beam structure 510 generally also has a right angle, the angle formed between the first plane 221 and the second plane 222 can be better matched with the I-beam structure 510, and clamping can be completed without excessive adjustment during installation, which can improve the connection efficiency; in this embodiment, the clamping member 400 connected to the side panel 200 passes through the first plane 221 to abut against the I-beam structure 510, and the I-beam structure 510 connected to the base plate 100 passes through the base plate 100 to press the I-beam structure 510 against the second plane 222.

[0040] Please refer to Figure 4-5 The clamping member 400 includes a first clamping member 410, which is movably connected to the bottom plate 100. The first clamping member 410 has the freedom to move along a first direction. The first clamping member 410 can move along the first direction to abut against the connecting portion 500 until the connecting portion 500 is pressed against the limiting portion 220. In one embodiment, the first clamping member 410 is movably connected to the bottom plate 100. The first clamping member 410 can pass through the bottom plate 100 and abut against the I-beam structure 510 located in the accommodating space 300 to perform a tightening operation. There are multiple first clamping members 410, and the multiple number is two or more. The multiple first clamping members 410 are preferably arranged along the transverse direction of the I-beam structure 510 to better complete the clamping of the I-beam structure 510; the first direction is such as Figure 4 As shown in , it is a vertical direction F2 perpendicular to the positioning surface 110 .

[0041] The clamping member 400 further includes a second clamping member 420, which is movably connected to the side plate 200, and the second clamping member 420 has a degree of freedom of movement along the second direction, and the second clamping member 420 can move along the second direction until it abuts against the connecting portion 500; the second clamping member 420 is movably connected to the side plate 200. In one embodiment, the second clamping member 420 has a plurality of second clamping members 420, and the plurality of second clamping members 420 are respectively arranged on the side plates 200 arranged opposite to each other, and the plurality of second clamping members 420 can abut against the I-beam structure 510 from two opposite directions, respectively, to complete the clamping of the I-beam structure 510; the second direction is as follows Figure 4 As shown, Figure 4 The horizontal direction F2.

[0042] The locking connection device also includes a mounting member, which is connected to the bottom plate 100. The locking connection device needs to be tightly connected to the I-beam structure 510 and then connected to the external component. In one embodiment, the mounting portion 700 is an extension of the bottom plate 100, and the mounting portion 700 and the bottom plate 100 are integrally formed, and the mounting portion 700 includes a plurality of threaded connection holes; in other embodiments, the mounting portion 700 can also be separated from the bottom plate 100, and the mounting portion 700 and the bottom plate 100 are connected by one of the methods of screw connection, clamping connection, etc.

[0043] The present application also provides a lifting device, including a guide rail assembly 800, a mounting frame 900 and the aforementioned locking connection device, the guide rail assembly 800 includes at least one guide member 810, and the guide member 810 has the freedom of movement along the length direction of the guide rail assembly 800; the mounting frame 900 is connected to the guide member 810, the mounting rail includes a plurality of mounting blocks 910; and the base plate 100 of the locking connection device is connected to the mounting block 910 via the mounting portion 700.

[0044] Guide rail assembly 800 Figure 6-7 As shown, it includes a plurality of T-shaped guide rails connected end to end, and the ends of the T-shaped guide rails are respectively provided with connecting parts 500, and the connecting parts 500 include a plurality of connecting holes. The front and rear T-shaped guide rails are spliced ​​together through the connecting holes, and the connecting holes are connected by a quick latch structure. The connection method is simple and efficient. The guide rail assembly 800 also includes a guide member 810, and the guide member 810 can move freely along the guide rail. The mounting frame 900 is fixedly connected to the guide member 810, and the guide member 810 can drive the mounting frame 900 to move along the aforementioned T-shaped guide rail. The mounting frame 900 includes a frame structure and a mounting block 910. The mounting frame 900 depends on the structure of the workpiece to be hoisted, and can be reasonably arranged according to the structure of the workpiece to be hoisted. The mounting block 910 is used to install external components. The locking connection device is threaded or pinned to the mounting block 910 through its own mounting part 700.

[0045] Principle / Steps

[0046] First, adjust the distance between the bottom plate 100 and the side plate 200, and increase the distance between the two to allow the I-beam structure 510 to be inserted into the accommodating space 300, and adjust the distance of the threaded connection with the bottom plate 100. Since the bottom plate 100 is fixedly connected to the external connection block, the bottom plate 100 cannot move, and the side plate 200 can only be gradually approached to the bottom plate 100. Under the action of the limiting part 220 of the side plate 200, pull the I-beam structure 510 to abut against the positioning surface 110 to complete the preliminary leveling of the bottom plate 100; after completing the preliminary leveling of the bottom plate 100, adjust the multiple first clamping members 410 on the bottom plate 100 so that A plurality of first clamping members 410 approach the I-beam structure 510 along the first direction, so that the I-beam structure 510 is pressed against the first plane 221 of the limiting portion 220, and the clamping operation of the I-beam structure 510 in the first direction is completed; then the second clamping members 420 are adjusted, and the second clamping members 420 on the left and right sides pass through the side panels 200 and synchronously approach the connecting portion 500 along the second direction, clamping the I-beam structure 510 from the left and right sides, so as to complete the leveling of the side panels 200 and the tightening of the I-beam structure 510, thereby completing the locking connection between the locking connection device and the connecting portion 500 with the I-beam structure 510.

[0047] Technical effects:

[0048] 1. The present application provides a locking connection device, so that when the connection part 500 with the I-beam structure 510 has welding deformation, the locking connection device can adapt to the connection deformation of the connection part 500 by adjusting the installation spacing between the bottom plate 100 and the side plate 200, complete the leveling of the bottom plate 100, and synchronously adjust multiple clamps 400 at the same time. The leveling of the side plate 200 and the tightening of the side plate 200 and the bottom plate 100 are completed through the clamps 400. The above operations can complete the clamping of the connection part 500 with the I-beam structure 510 in the case of welding deformation. The locking connection method of the device is simple, and there is no need to set up additional leveling and clamping operations, which greatly increases the connection efficiency between the locking connection device and the connection part 500 with the I-beam structure 510.

[0049] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0050] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A locking connection device, used for locking connection with a connecting portion (500) with an I-beam structure (510), characterized in that: include: A bottom plate (100), the bottom plate (100) comprising a positioning surface (110); a side plate (200), the side plate (200) being connected to the bottom plate (100), the installation spacing between the side plate (200) and the positioning surface (110) being adjustable, the side plates (200) being provided in plurality, and the plurality of side plates (200) and the bottom plate (100) being enclosed to form a receiving space (300) adapted to the I-beam structure (510); and A clamping member (400), wherein the clamping member (400) is provided in a plurality, and the clamping member (400) is movably connected to the bottom plate (100) and / or the side plate (200). The clamping member (400) can penetrate the bottom plate (100) and / or the side plate (200) and abut against the outer surface of the connecting portion (500) to complete a locking connection with the connecting portion (500).

2. The locking connection device according to claim 1, characterized in that: The locking connection device further comprises a connecting rod (600), wherein the connecting rod (600) is threadedly connected to the bottom plate (100) and the side plate (200).

3. The locking connection device according to claim 2, characterized in that: The bottom plate (100) is provided with a first threaded hole (120), and the side plate (200) is provided with a second threaded hole (210) coaxially arranged with the first threaded hole (120), and the internal thread of the first threaded hole (120) and the internal thread of the second threaded hole (210) are arranged equidistantly in opposite directions or equidistantly in the same direction.

4. The locking connection device according to claim 3, characterized in that: The side plate (200) comprises a limiting portion (220), the limiting portion (220) being spaced apart from the positioning surface (110), and the limiting portion (220) being capable of abutting against the connecting portion (500).

5. The locking connection device according to claim 4, characterized in that: The side panels (200) are mounted opposite to the bottom panel (100), and the adjacent side panels (200) and the bottom panel (100) disposed opposite to each other enclose the accommodation space (300).

6. The locking connection device according to claim 5, characterized in that: The limiting portion (220) comprises a first plane (221) and a second plane (222), and the first plane (221) and the second plane (222) form a clamping angle adapted to the outer contour of the I-beam structure (510).

7. The locking connection device according to claim 6, characterized in that: The clamping member (400) comprises a first clamping member (410), the first clamping member (410) being movably connected to the base plate (100), the first clamping member (410) having a degree of freedom of movement along a first direction, and the first clamping member (410) being movable along the first direction until it abuts against the connecting portion (500) until the connecting portion (500) is tightly pressed against the limiting portion (220).

8. The locking connection device according to claim 7, characterized in that: The clamping member (400) includes a second clamping member (420), the second clamping member (420) is movably connected to the side plate (200), the second clamping member (420) has a degree of freedom of movement along a second direction, and the second clamping member (420) can move along the second direction until it abuts against the connecting portion (500).

9. The locking connection device according to claim 3, characterized in that: The locking connection device further comprises a mounting portion (700), wherein the mounting portion (700) is connected to the base plate (100).

10. A lifting device, characterized in that: include: A guide rail assembly (800), the guide rail assembly (800) comprising at least one guide member (810), the guide member (810) having a degree of freedom of movement along the length direction of the guide rail assembly (800); A mounting frame (900), the mounting frame (900) being connected to the guide member (810), the mounting frame (900) comprising at least one mounting block (910); and The locking connection device according to any one of claims 1 to 9, wherein the base plate (100) of the locking connection device is connected to the mounting block (910) via a mounting portion (700).