A lifting device

Abstract

The application discloses a lifting device and relates to the technical field of elevators. In the lifting device, the two sides of a bearing part are respectively provided with lifting mechanisms, annular guide rails and rolling and clamping moving parts; a plurality of bearing parts are arranged at intervals along the extension direction of the annular guide rails; the two sides of the bearing part are connected with the corresponding side annular guide rails and the lifting mechanisms through the rolling and clamping moving parts; the rolling and clamping moving part comprises a rolling and clamping assembly, a first hinged part and a second hinged part; the rolling and clamping assembly rolls along the annular guide rail and clamps the annular guide rail; the first hinged part is hinged with the bearing part; the second hinged part is hinged with the corresponding side lifting mechanism; as observed from the orthographic projection determined from the plane where the annular guide rail is located, the annular extension paths of the annular guide rails on the two sides of the bearing part are shifted in the staggered direction, so that when the lifting mechanisms drive the bearing part, the rolling and clamping moving parts on the two sides of the bearing part move synchronously along the corresponding side annular guide rails, so that the bearing part realizes translational lifting. The application can realize stable layering and bearing of stored objects.

Description

Technical Field

[0001] This application relates to the field of lifting technology, and more specifically to lifting devices. Background Technology

[0002] Layered storage is an efficient way to utilize limited space and improve space utilization. This can be achieved by using multiple vertically adjustable support units to conveniently hold items in layers. However, existing support units, driven by conveyor chains, are prone to swaying, which can easily cause the stored items to tip over.

[0003] Therefore, how to provide a method that can achieve stable layered support for stored items remains a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, in order to solve the above-mentioned technical problems, this application provides a lifting device, which includes an annular guide rail, a roller clamp moving part, a lifting mechanism, and a bearing part; the bearing part is used to carry the stored items;

[0005] Lifting mechanisms, annular guide rails, and roller clamp moving parts are distributed on both sides of the bearing section; multiple bearing sections are spaced apart along the extension direction of the annular guide rails; the two sides of the bearing section are connected to the corresponding annular guide rails and lifting mechanisms through roller clamp moving parts.

[0006] The roller clamp moving part includes a roller clamp assembly, a first hinge part and a second hinge part; the roller clamp assembly rolls along the annular guide rail and clamps the annular guide rail; the first hinge part is hinged to the bearing part; the second hinge part is hinged to the lifting mechanism on the corresponding side.

[0007] Specifically, the direction of the separation is the distance between the axes of the first hinges of the roller clamp moving parts on both sides of the bearing part; when viewed from the orthographic projection determined by the plane where the annular guide rail is located, the annular extension paths of the annular guide rails on both sides of the bearing part are translated and separated along the separation direction, so that when the lifting mechanism drives the bearing part, the roller clamp moving parts on both sides of the bearing part move synchronously along the annular guide rails on the corresponding sides, so that the bearing part can achieve translational lifting.

[0008] Beneficial Effects: Unlike existing technologies, this application offers at least three beneficial effects. First, by using the annular extension paths of the circular guide rails on both sides of the support section to shift and offset along a staggered direction, the support section can achieve translational lifting, enabling convenient layered support of stored items through the translational lifting of multiple support sections. Second, this application utilizes the roller clamp moving parts, staggered along a staggered direction on both sides of the support section, to support the support section respectively, thereby improving the stability of the stored items supported on the support section. Third, by using the roller clamp assembly to roll along and clamp the annular guide rail, the vibration of the roller clamp moving parts can be suppressed, further improving the stability of the stored items supported on the support section. In summary, the lifting device of this application can achieve stable layered support of stored items. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the lifting device of this application. Figure 1 This is obtained by observing the orthographic projection from the plane containing the circular guide rail;

[0010] Figure 2 This is a schematic diagram showing the annular extension path of the annular guide rails on both sides of the bearing section of the lifting device of this application. Figure 2 This is obtained by observing the orthographic projection from the plane containing the circular guide rail;

[0011] Figure 3 yes Figure 1 Enlarged schematic diagram of region A in the middle;

[0012] Figure 4 yes Figure 1 Enlarged schematic diagram of region B in the middle;

[0013] Figure 5 This is a schematic diagram of the assembly of the first hinged parts on both sides of the load-bearing part with the load-bearing part in this application. Figure 5 This is obtained by observing the orthographic projection from the plane containing the circular guide rail;

[0014] Figure 6 This is a three-dimensional structural diagram of the lifting device of this application;

[0015] Figure 7 yes Figure 6 A magnified view of region E in the middle;

[0016] Figure 8 yes Figure 6 Enlarged schematic diagram of region F in the middle;

[0017] Figure 9 This is a structural schematic diagram of the area near the rolling clamp moving part on one side of the bearing part in this application. Figure 9 Obtained by observing from above at an angle downwards;

[0018] Figure 10 This is a structural schematic diagram of the roller clamp moving part of this application. Figure 10 The result is obtained by observing the moving part of the roller clamp obliquely from the side where the first wall surface is located;

[0019] Figure 11 This is a structural schematic diagram of the area near the rolling clamp moving part on one side of the bearing part in this application. Figure 11 Obtained by looking down from above;

[0020] Figure 12 This is a schematic diagram of the assembly structure of the roller clamp moving part, the first hinge part, the first plug-in body and the adapter plate of this application. Figure 12 The section line is marked with GG;

[0021] Figure 13 It is along Figure 12 A schematic diagram of the cross-section obtained by cutting with the center section line GG;

[0022] Figure 14 This is a schematic diagram of the assembly structure of the roller clamp moving part, the first hinge part, the first plug-in body and the adapter plate of this application. Figure 14 The section line HH is marked in the middle;

[0023] Figure 15 It is along Figure 14 A schematic diagram of the cross-section obtained by cutting along the middle section line HH;

[0024] Figure 16 This is a structural schematic diagram of the portion of the conveyor chain near the moving roller clamp in this application;

[0025] Figure 17 yes Figure 1 A magnified schematic diagram of region J in the middle.

[0026] Lifting device 10; circular guide rail 100; circular extension path 101; I-beam guide rail 100a; flange 110a; web 120a; roller clamp moving part 200; lifting mechanism 300; conveyor chain 310; conveyor chain plate 311; sprocket 320; chain guide rail 330; bearing part 400; third hinge part 500; first insertion body 510; second insertion body 520; pin 530; spherical pair 501; adapter plate 600; fourth hinge part 610; axis L of the first hinge part 220; offset direction e; first offset distance d1; second offset distance d2;

[0027] Roller clamp assembly 210; inner roller assembly 211; first inner roller 2111; second inner roller 2112; web clearance 2113; outer roller 212; flange clearance 213; first hinge 220; second hinge 230; mounting bracket 240; guide rail clearance groove 241; first side wall 2411; second side wall 2412; groove bottom wall 2413; first wall side a1; second wall side a2; mounting base 250; first adapter 251; second adapter 252; adjustment hole 2521; first threaded fastener 261; second threaded fastener 262;

[0028] First rotating shaft 11-1; First bearing 11-2; First outer sleeve 11-3; Second rotating shaft 12-1; Second bearing 12-2; Roller 12-3; Rolling section 12-31; Second outer sleeve 12-32. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solutions of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] Please see Figures 1-9 The lifting device 10 of this application includes an annular guide rail 100, a roller clamp moving part 200, a lifting mechanism 300, and a bearing part 400.

[0031] A lifting mechanism 300, an annular guide rail 100, and a roller clamp moving member 200 are respectively distributed on both sides of the support part 400. Multiple support parts 400 are arranged at intervals along the extension direction of the annular guide rail 100. The two sides of the support part 400 are respectively connected to the annular guide rail 100 and the lifting mechanism 300 on the corresponding side through the roller clamp moving member 200.

[0032] The roller clamp moving member 200 includes a roller clamp assembly 210, a first hinge portion 220, and a second hinge portion 230. The roller clamp assembly 210 rolls along the annular guide rail 100 and clamps the annular guide rail 100. The first hinge portion 220 is hinged to the support portion 400. The second hinge portion 230 is hinged to the lifting mechanism 300 on the corresponding side.

[0033] Specifically, the offset direction e is defined by the spacing direction of the axis L of the first hinge portion 220 of the roller clamp moving members 200 on both sides of the support portion 400. Viewed from the orthographic projection determined by the plane containing the annular guide rail 100, the annular extension paths 101 of the annular guide rails 100 on both sides of the support portion 400 are shifted and offset along the offset direction e, so that when the lifting mechanism 300 drives the support portion 400, the roller clamp moving members 200 on both sides of the support portion 400 move synchronously along the corresponding side of the annular guide rail 100, thereby enabling the support portion 400 to achieve translational lifting.

[0034] It should be noted that the stored items are those carried on the support section 400. Layered storage of the stored items can be achieved through multiple support sections 400 spaced apart along the extension direction of the annular guide rail 100. The stored items can be vehicles, pallets, daily necessities, workpieces or materials in the production process, but are not limited to these. Pallets are items stacked together. Daily necessities include, but are not limited to, toiletries, tableware, or food, and are not specifically limited here. In particular, when the stored items of the lifting device 10 are vehicles, the lifting device 10 is essentially equivalent to a multi-level parking system.

[0035] In some examples (not shown), the carrying unit 400 may be equipped with a conveying device including a conveyor belt for receiving the stored items input into the carrying unit 400 and outputting the stored items carried in the carrying unit 400. This enables automatic loading and unloading of the stored items.

[0036] By employing the above method, at least three beneficial effects are achieved. Firstly, by shifting the annular extension paths 101 of the annular guide rails 100 on both sides of the support portion 400 along the offset direction e, the support portion 400 can achieve translational lifting, thus enabling convenient layered support of stored items through the translational lifting of multiple support portions 400. Secondly, the application utilizes the roller clamp moving members 200, which are offset along the offset direction e on both sides of the support portion 400, to support the support portion 400 respectively, thereby improving the stability of the stored items supported on the support portion 400. Thirdly, by using the roller clamp assembly 210 to roll along and clamp the annular guide rail 100, the vibration of the roller clamp moving member 200 can be suppressed, further improving the stability of the stored items supported on the support portion 400. In summary, the lifting device 10 of this application can achieve stable layered support of stored items.

[0037] It should be noted that the annular extension paths 101 of the annular guide rails 100 on both sides of the support portion are defined as the first annular extension path and the second annular extension path, respectively. The translational offset of the annular extension paths 101 of the annular guide rails 100 on both sides of the support portion 400 along the offset direction e can mean that the first annular extension path and the second annular extension path are offset along the offset direction e, and if the first annular extension path is translated along the offset direction e to the second annular extension path, the first annular extension path can overlap with the second annular extension path. That is, the translational symmetry of the annular extension paths 101 of the annular guide rails 100 on both sides of the support portion 400 is achieved.

[0038] Optionally, the angle between the offset direction e and the horizontal plane is taken as the first angle, which can be 0 degrees to 90 degrees.

[0039] In the first example, the support portion 400 is formed as a fully open structure, and the first included angle can be 0 degrees, so that the fully open structure is parallel to the horizontal plane. The fully open structure is, for example, a flat plate structure, but is not limited to this.

[0040] In the second example (not shown), the support portion is formed as a fully open structure, with a first included angle of 10 degrees, causing the fully open structure to be inclined relative to the horizontal plane. The fully open structure is, for example, a flat plate structure, but is not limited to this.

[0041] In the third example (not shown), the support portion is formed as a semi-open structure, such as an L-shaped structure, which includes a horizontal plate and a vertical plate. The first hinge portion of the roller clamping moving parts on both sides of the support portion is hinged to the vertical plate, and the first included angle can be 90 degrees, so that the horizontal plate is parallel to the horizontal plane.

[0042] In the fourth example (not shown), the support is formed as a semi-open structure, and the first included angle can be 0 degrees, 45 degrees or 90 degrees, but is not limited to this.

[0043] In the fifth example (not shown), the support part is formed as an openable closed structure, and the first included angle can be 0 degrees, 22 degrees, 45 degrees, 60 degrees or 90 degrees.

[0044] Optionally, such as Figures 1-9 As shown, each bearing portion 400 has its two sides connected to the corresponding annular guide rail 100 and lifting mechanism 300 via roller clamp moving parts 200. The roller clamp moving parts 200 are different for different bearing portions 400.

[0045] Viewed from the orthographic projection of the plane containing the annular guide rail 100, the annular extension paths 101 of the annular guide rails 100 on both sides of the support portion 400 have the same shape. The axis L of the first hinge portion 220 of the rolling clamp moving member 200 on both sides of the same support portion 400 is shifted by a distance along the offset direction e, which is the first offset distance d1. Viewed from the orthographic projection of the plane containing the annular guide rail 100, the annular extension paths 101 of the annular guide rails 100 on both sides of the support portion 400 are shifted by a distance along the offset direction e, which is the second offset distance d2. The first offset distance d1 is equal to the second offset distance d2.

[0046] In the above manner, the annular guide rails 100 on both sides of the bearing part 400 have the same shape and the first offset distance d1 is equal to the second offset distance d2, so that the roller clamp moving parts 200 on both sides of the bearing part 400 can move synchronously along the annular guide rails 100 on the corresponding side, so that the bearing part 400 can achieve translational lifting.

[0047] Optionally, combined Figures 1-5 See Figures 6-13 The annular guide rail 100 is an I-beam guide rail 100a, which includes a web 120a and flanges 110a connected to both sides of the web 120a. The web 120a and the flanges 110a connected to both sides of the web 120a form an I-shaped structure. The roller clamp assembly 210 includes an inner roller assembly 211 and an outer roller 212.

[0048] The inner rolling element assembly 211 includes a first inner rolling element 2111 and a second inner rolling element 2112. A web clearance 2113 is formed between the first inner rolling element 2111 and the second inner rolling element 2112 to avoid the web 120a of the corresponding side of the I-beam guide rail 100a. A flange clearance 213 is formed between the inner rolling element assembly 211 and the outer rolling element 212 to avoid the flange 110a of the corresponding side of the I-beam guide rail 100a.

[0049] The inner rolling element assembly 211 is used to roll the inner side of the flange 110a of the I-beam guide rail 100a, and the outer rolling element 212 is used to roll the outer side of the flange 110a of the I-beam guide rail 100a, so as to roll and clamp the flange 110a on one side of the I-beam guide rail 100a.

[0050] In this manner, the inner rolling element assembly 211 and the outer rolling element 212 can cooperate with each other to clamp one side of the flange 110a of the I-beam guide rail 100a in a rolling manner relative to the flange 110a of the I-beam guide rail 100a. Specifically, when the lifting mechanism 300 drives the bearing part 400, the roller clamp moving member 200 is driven by the lifting mechanism 300 to move along the annular guide rail 100, so that the roller clamp assembly 210 rolls along the annular guide rail 100 and clamps the annular guide rail 100.

[0051] Optionally, combined Figures 1-5 See Figures 6-13 The inner side of the flange 110a of the I-beam guide rail 100a slopes from the side closest to the web 120a to the side furthest from the web 120a toward the side where the outer side of the flange 110a of the I-beam guide rail 100a is located.

[0052] Among them, the outer periphery of the first inner rolling body 2111 and the outer periphery of the second inner rolling body 2112 are both formed with conical surfaces that roll against the inner side of the flange 110a of the I-beam guide rail 100a.

[0053] Optionally, see Figures 6-15 As shown, the roller clamp moving member 200 includes a mounting bracket 240, which is provided with a guide rail clearance groove 241 to avoid the I-beam guide rail 100a on the corresponding side. The guide rail clearance groove 241 has a first side wall 2411 and a second side wall 2412 that are disposed opposite to each other.

[0054] Both the inner rolling element assembly 211 and the outer rolling element 212 are disposed within the guide rail clearance groove 241. The first inner rolling element 2111 is disposed in the guide rail clearance groove 241 and rotatably disposed on the first side wall 2411. The second inner rolling element 2112 is disposed in the guide rail clearance groove 241 and rotatably disposed on the second side wall 2412. The outer rolling element 212 is disposed in the guide rail clearance groove 241, with its two ends respectively disposed on the first side wall 2411 and the second side wall 2412. The first hinge portion 220 and the second hinge portion 230 are disposed on the mounting bracket 240 and located outside the guide rail clearance groove 241.

[0055] By using the one-piece molded mounting bracket 240 to set the roller clamp assembly 210 in the above manner, the structural strength of the roller clamp moving part 200 can be improved.

[0056] Optionally, see Figures 6-15 Both the first inner rolling element 2111 and the second inner rolling element 2112 include a first rotating shaft 11-1, a first bearing 11-2, and a first outer sleeve 11-3. The first rotating shaft 11-1 of the first inner rolling element 2111 and the first rotating shaft 11-1 of the second inner rolling element 2112 are respectively disposed on the first side wall 2411 and the second side wall 2412. The first bearing 11-2 is disposed on the first rotating shaft 11-1. The first outer sleeve 11-3 is sleeved on the outer ring of the first bearing 11-2 for rolling the inner side of the flange 110a of the I-beam guide rail 100a.

[0057] The outer rolling element 212 includes a second rotating shaft 12-1, a second bearing 12-2, and a roller 12-3. The two ends of the second rotating shaft 12-1 are respectively disposed on the first side wall 2411 and the second side wall 2412, and the roller 12-3 is sleeved on the second rotating shaft 12-1. The roller 12-3 includes a rolling section 12-31 and second outer sleeves 12-32 located at both ends of the rolling section 12-31. The second bearing 12-2 is disposed on the second rotating shaft 12-1 corresponding to the second outer sleeve 12-32; the second outer sleeve 12-32 is sleeved on the outer ring of the second bearing 12-2.

[0058] The rolling section 12-31 is used to roll the outer side of the flange 110a of the I-beam guide rail 100a. The outer diameter of the second outer sleeve 12-32 is larger than the outer diameter of the rolling section 12-31, so that a flange clearance gap 213 is formed between the second outer sleeves 12-32 at both ends of the rolling section 12-31.

[0059] By utilizing the flange clearance 213 to avoid the flange 110a of the I-beam guide rail 100a, the inner rolling element assembly 211 and the outer rolling element 212 can be assembled more compactly.

[0060] Optionally, combined Figures 6-13 See Figure 14 and Figure 15 The mounting bracket 240 has a groove bottom wall 2413. The groove bottom wall 2413 has a first wall side a1 and a second wall side a2 disposed opposite to each other. The first side wall 2411 and the second side wall 2412 are disposed on the first wall side a1. The second wall side a2 is provided with a mounting base 250.

[0061] A first hinge portion 220 is disposed on a mounting base 250. A first adapter portion 251 and a second adapter portion 252 are provided on the outer periphery of the first hinge portion 220. The first adapter portion 251 is connected to the bottom wall 2413 of the groove via a first threaded fastener 261, and the second adapter portion 252 is connected to the bottom wall 2413 of the groove via a second threaded fastener 262.

[0062] The second adapter 252 is provided with an adjustment hole 2521, and the second threaded fastener 262 passes through the adjustment hole 2521 to connect to the bottom wall 2413 of the groove. When the second threaded fastener 262 is loosened from the second adapter 252, the adjustment hole 2521 can avoid the second threaded fastener 262 in the direction around the first threaded fastener 261, so that the mounting base 250 can rotate around the first threaded fastener 261 to adjust the relative position of the first hinge 220 and the bottom wall 2413 of the groove.

[0063] In the manner described above, when the second threaded fastener 262 loosens the second adapter 252, the relative position of the first hinge portion 220 and the bottom wall 2413 of the groove is adjusted by the rotation of the mounting base 250 around the first threaded fastener 261. This allows the first hinge portion 220 to align with the third hinge portion 500 on the bearing portion 400 that corresponds to the first hinge portion 220.

[0064] Optionally, combined Figures 6-13 See Figure 14 and Figure 15 A third hinge portion 500 is provided between the first hinge portion 220 and the support portion 400. The third hinge portion 500 is fixed to the support portion 400 and is hinged to the first hinge portion 220 by forming a spherical pair 501.

[0065] It should be noted that in other alternative examples (not shown in the figure), the first hinge and the third hinge can be hinged by a cylindrical joint, but are not limited to this.

[0066] Optionally, combined Figures 6-13 See Figure 14 and Figure 15 The third hinge portion 500 includes a first insertion body 510, a second insertion body 520, and a pin 530. The first insertion body 510 is hinged to the first hinge portion 220 via a spherical joint 501. The second insertion body 520 is fixed to the support portion 400 and inserted into the first insertion body 510. The pin 530 abuts against the first insertion body 510 and the second insertion body 520 respectively to restrict the relative movement of the first insertion body 510 and the second insertion body 520.

[0067] By way of example and not limitation, the second connector 520 is inserted into the first connector 510, and the pin 530 passes through the first connector 510 to abut against the first connector 510 and the second connector 520 respectively.

[0068] Optionally, combined Figure 1 , Figures 6-15 See Figure 16 and Figure 17 As shown, the lifting mechanism 300 has a conveyor chain 310 that extends along the annular guide rail 100 on the corresponding side; the conveyor chain 310 has a plurality of conveyor chain plates 311 that are hinged in sequence.

[0069] A transition plate 600 is provided between the second hinge portion 230 and the corresponding conveyor chain 310, and the transition plate 600 is integrally formed with a conveyor chain plate 311 of the conveyor chain 310. The transition plate 600 is provided with a fourth hinge portion 610, which is hinged to the second hinge portion 230.

[0070] For example, and not as a limitation, the second hinge portion 230 and the fourth hinge portion 610 may be connected by forming a cylindrical joint.

[0071] Optionally, combined Figure 1 , Figures 6-15 See Figure 16 and Figure 17 As shown, the lifting mechanism 300 includes a sprocket 320 and a chain guide rail 330. The conveyor chain 310 passes around the sprocket 320 and through the guide groove of the chain guide rail 330. The conveyor chain 310 is connected to the sprocket 320 in a driving connection so that the conveyor sprocket 320 can drive the conveyor chain 310, thereby driving the carrier 400 to achieve the translational lifting of the carrier 400.

[0072] It should be noted that, when viewed from the orthographic projection determined by the plane on which the annular guide rail 100 is located, the annular extension paths of the conveyor chains 310 on both sides of the bearing portion 400 have the same shape, and the conveyor chains 310 on both sides of the bearing portion 400 also shift and offset along with the annular guide rail 100 on both sides of the bearing portion 400.

[0073] For example, and not limited to, the sprockets 320 of the lifting mechanisms 300 on both sides of the bearing section 400 can be rotated synchronously by the drive device, so as to drive the conveyor chains 310 on both sides of the bearing section 400 to rotate synchronously. Then, through the chain transmission on both sides of the bearing section 400, the roller clamp moving parts 200 on both sides of the bearing section 400 can be driven to move synchronously on the annular extension path 101 of the moving part annular guide rail 100 on the corresponding side, so as to drive the bearing section 400 to achieve translational lifting.

[0074] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A lifting device, characterized in that, The lifting device includes an annular guide rail, a roller clamp moving part, a lifting mechanism, and a load-bearing part; the load-bearing part is used to carry the stored items. The lifting mechanism, the annular guide rail, and the roller clamp moving member are respectively distributed on both sides of the bearing part; multiple bearing parts are arranged at intervals along the extension direction of the annular guide rail; the two sides of the bearing part are respectively connected to the annular guide rail and the lifting mechanism on the corresponding side through the roller clamp moving member; The roller clamp moving part includes a roller clamp assembly, a first hinge portion and a second hinge portion; the roller clamp assembly rolls along the annular guide rail and clamps the annular guide rail; the first hinge portion is hinged to the bearing portion; the second hinge portion is hinged to the lifting mechanism on the corresponding side; Specifically, the direction of the separation is defined by the spacing of the axes of the first hinges of the roller clamp moving parts on both sides of the bearing portion; when viewed from the orthographic projection determined by the plane where the annular guide rail is located, the annular extension paths of the annular guide rails on both sides of the bearing portion are translated and separated along the separation direction, so that when the lifting mechanism drives the bearing portion, the roller clamp moving parts on both sides of the bearing portion move synchronously along the corresponding side of the annular guide rail, so that the bearing portion can achieve translational lifting.

2. The lifting device according to claim 1, characterized in that, The annular guide rail is an I-beam guide rail, and the roller clamp assembly includes: The inner rolling element assembly includes a first inner rolling element and a second inner rolling element; a web clearance clearance is formed between the first inner rolling element and the second inner rolling element to avoid the web of the corresponding side of the I-beam guide rail. And an outer rolling body, wherein a flange clearance clearance is formed between the inner rolling body assembly and the outer rolling body to avoid the flange of the corresponding side of the I-beam guide rail; The inner rolling element assembly is used to roll the inner side of the flange of the I-beam guide rail, and the outer rolling element is used to roll the outer side of the flange of the I-beam guide rail to clamp the flange on one side of the I-beam guide rail.

3. The lifting device according to claim 2, characterized in that, The inner side of the flange of the I-beam guide rail slopes from the side closest to the web to the side furthest from the web towards the side where the outer side of the flange of the I-beam guide rail is located. The outer periphery of the first inner rolling body and the outer periphery of the second inner rolling body are both formed with conical surfaces that roll against the inner side of the flange of the I-beam guide rail.

4. The lifting device according to claim 2, characterized in that, The roller clamp moving component includes: The mounting bracket is integrally formed and is provided with a guide rail clearance groove to avoid the I-beam guide rail on the corresponding side; the guide rail clearance groove has a first side wall and a second side wall that are arranged opposite to each other. The first inner roller is disposed in the guide rail clearance groove and rotatably disposed on the first side wall; the second inner roller is disposed in the guide rail clearance groove and rotatably disposed on the second side wall; the outer roller is disposed in the guide rail clearance groove and its two ends are respectively rotatably disposed on the first side wall and the second side wall. The first hinge portion and the second hinge portion are disposed on the mounting frame and located outside the guide rail clearance groove.

5. The lifting device according to claim 4, characterized in that, Both the first inner roller and the second inner roller include a first rotating shaft, a first bearing, and a first outer sleeve; the first rotating shaft of the first inner roller and the first rotating shaft of the second inner roller are respectively disposed on the first side wall and the second side wall, and the first bearing is disposed on the first rotating shaft; the first outer sleeve is sleeved on the outer ring of the first bearing for rolling the inner side of the flange of the I-beam guide rail; The outer rolling element includes a second rotating shaft, a second bearing, and a roller; the two ends of the second rotating shaft are respectively disposed on the first side wall and the second side wall, and the roller is sleeved on the second rotating shaft; the roller includes a rolling section and a second outer sleeve located at both ends of the rolling section; the second bearing is disposed on the second rotating shaft corresponding to the second outer sleeve; the second outer sleeve is sleeved on the outer ring of the second bearing; The rolling section is used to roll the outer flange of the I-beam guide rail; the outer diameter of the second outer sleeve is larger than the outer diameter of the rolling section, so that the flange clearance gap is formed between the second outer sleeves at both ends of the rolling section.

6. The lifting device according to claim 5, characterized in that, The mounting bracket has a groove bottom wall; the groove bottom wall has a first wall side and a second wall side arranged opposite to each other; the first side wall and the second side wall are disposed on the first wall side; a mounting base is disposed on the second wall side; The first hinge portion is disposed on the mounting base; the mounting base has a first adapter portion and a second adapter portion protruding from the outer periphery of the first hinge portion; the first adapter portion is connected to the bottom wall of the groove through a first threaded fastener, and the second adapter portion is connected to the bottom wall of the groove through a second threaded fastener. The second adapter is provided with an adjustment hole, and the second threaded fastener passes through the adjustment hole and connects to the bottom wall of the groove. When the second threaded fastener is loosened from the second adapter, the adjustment hole can avoid the second threaded fastener in the direction around the first threaded fastener, so that the mounting base can rotate around the first threaded fastener to adjust the relative position of the first hinge and the bottom wall of the groove.

7. The lifting device according to claim 6, characterized in that, A third hinge is provided between the first hinge and the bearing portion. The third hinge is fixed to the bearing portion and is hinged to the first hinge by forming a spherical joint.

8. The lifting device according to claim 7, characterized in that, The third hinge portion includes a first plug body, a second plug body, and a pin; the first plug body forms a spherical joint hinge with the first hinge portion, the second plug body is fixed to the bearing portion and plugged into the first plug body; the pin abuts against the first plug body and the second plug body respectively to restrict the relative movement of the first plug body and the second plug body.

9. The lifting device according to claim 1, characterized in that, The lifting mechanism has a conveyor chain that extends along the corresponding side of the annular guide rail; the conveyor chain has multiple conveyor chain plates that are sequentially hinged. Wherein, a transition plate is provided between the second hinge portion and the corresponding side of the conveyor chain, and the transition plate is integrally formed with one of the conveyor chain plates of the conveyor chain; the transition plate is provided with a fourth hinge portion, and the fourth hinge portion is hinged to the second hinge portion.

10. The lifting device according to claim 1, characterized in that, Each of the bearing portions has its two sides connected to the corresponding side of the annular guide rail and the lifting mechanism via the roller clamp moving member; different bearing portions correspond to different roller clamp moving members; Specifically, when viewed from the orthographic projection of the plane containing the annular guide rail, the annular extension paths of the annular guide rails on both sides of the bearing portion have the same shape; the distance by which the axes of the first hinge portions of the rolling clamp moving members on both sides of the same bearing portion are shifted and offset along the offset direction is the first offset distance; when viewed from the orthographic projection of the plane containing the annular guide rail, the distance by which the annular extension paths of the annular guide rails on both sides of the same bearing portion are shifted and offset along the offset direction is the second offset distance; the first offset distance is equal to the second offset distance.

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