Supporting structure of lifting equipment

Abstract

The utility model discloses a supporting structure of lifting equipment, which belongs to the technical field of lifting equipment and comprises a machine body, the machine body is composed of a lower horizontal section, a lifting section and an upper horizontal section, and supporting foot stands are arranged at the bottom of the lower horizontal section and / or the lifting section and / or the upper horizontal section. The supporting foot stand is formed by splicing a plurality of hollow pipes and / or sheet metal parts, and universal rotating wheels and supporting feet capable of being longitudinally adjusted are arranged at the bottom of the supporting foot stand. By means of the structure, effective supporting force can be provided for the machine body, the phenomenon that lifting equipment is heavy in head and light in foot is avoided, the problems that the lifting equipment topples over and is damaged in the material lifting and conveying process are reduced, meanwhile, the supporting feet can be longitudinally adjusted, and therefore the lifting equipment can be stably placed in uneven places, and the working efficiency is improved. And in addition, the machine body main body can move through the universal rotating wheels, so that the machine body main body can move at any time according to the use requirements of users, and therefore the different material lifting and conveying requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to a supporting structure of lifting equipment. Background Art

[0002] At present, lifting equipment is mainly used for vertically lifting block particles and powdered materials, generally by lifting and conveying through a hopper installed on a conveyor chain, such as a small Z-type bucket elevator disclosed in the utility model patent of China Patent No. CN201922223310.0, an outward-turning structure elevator disclosed in the utility model patent of China Patent No. CN201920986170.X, and a Z-shaped elevator disclosed in the utility model patent of China Patent No. CN202020778713.1, etc. The main body of the above-mentioned lifting equipment is Z-shaped or S-shaped as a whole. The shape of the tea leaves is prone to top-heavy phenomenon during the transportation and lifting process, which may lead to dumping and damage, and poor stability and safety. In addition, the utility model patent with Chinese patent number CN201621369161.9 discloses a tea withering elevator frame, in which each side mounting plate is fixedly mounted with a supporting leg at the lower end, and a number of reinforcing rods are connected between the two supporting legs. The supporting legs and reinforcing rods are used to support the main body of the lifting device, but the supporting legs and reinforcing rods are fixed, and the position of the lifting device cannot be moved or adjusted, resulting in poor applicability. Therefore, further improvement is necessary. Utility Model Content

[0003] The utility model aims to provide a supporting structure for lifting equipment to overcome the deficiencies in the prior art.

[0004] A support structure for a lifting device designed for this purpose includes a fuselage body, which is composed of a lower horizontal section, a lifting section and an upper horizontal section. A supporting leg is provided at the bottom of the lower horizontal section, and / or the lifting section, and / or the upper horizontal section. The supporting leg is made of multiple hollow pipes and / or sheet metal parts, and a universal wheel and longitudinally adjustable supporting feet are provided at the bottom.

[0005] A lower horizontal support leg is fixedly provided at the bottom of the lower horizontal section, and an upper horizontal support leg is fixedly provided at the bottom of the upper horizontal section. The lower horizontal support leg and the upper horizontal support leg are respectively provided with one or more hollow pipes, and are respectively spliced from multiple hollow pipes. A lifting section fixing pipe is fixedly provided between the lower horizontal support leg and / or the upper horizontal support leg and the lifting section.

[0006] The lower horizontal support legs are provided in plurality and are fixedly arranged at intervals along the extension direction of the lower horizontal section. Horizontal fixing tubes are fixedly arranged between the lower horizontal support legs and the upper horizontal support legs and between adjacent lower horizontal support legs.

[0007] The lower horizontal support leg includes a lower transverse hollow tube, and lower longitudinal hollow tubes are fixedly provided on the left and right sides of the top of the lower transverse hollow tube respectively. A lower curved hollow tube is fixedly provided on the top of the lower longitudinal hollow tube. The lower curved hollow tube is bent toward the outside of the lower horizontal section, and a lower curved tube connecting block is fixedly provided on it. The lower curved hollow tube is fixedly connected to the outside of the lower horizontal section through the lower curved tube connecting block.

[0008] The lower wheel connecting piece and the lower supporting foot connecting piece are fixedly provided on the left and right sides of the bottom of the lower horizontal hollow tube. The lower wheel connecting piece is provided with a wheel connecting hole, and the lower universal wheel is connected through the wheel connecting hole. The lower supporting foot connecting piece is provided with an adjustment connecting hole, and the lower supporting foot is longitudinally adjusted through the adjustment connecting hole. The adjustment connecting hole is communicated with the lower longitudinal hollow tube.

[0009] A fixed angle code is also fixedly arranged between the lower transverse hollow tube and the lower longitudinal hollow tube.

[0010] The upper horizontal support leg includes an upper transverse hollow tube, and there are several upper transverse hollow tubes, which are arranged at longitudinal intervals. Upper longitudinal hollow tubes are fixedly provided on the left and right sides of the upper transverse hollow tube, and an upper curved hollow tube is fixedly provided on the top of the upper longitudinal hollow tube. The upper curved hollow tube is bent toward the outer side of the upper horizontal section, and an upper extension hollow tube is fixedly provided on it. An upper extension tube connecting block is fixedly provided on the upper extension hollow tube, and the upper extension tube is fixedly connected to the outer side of the upper horizontal section through the upper extension tube connecting block.

[0011] The left and right sides of the bottom of the upper horizontal hollow tube located at the bottom are respectively fixed with lower extending hollow tubes, and a hollow reinforcing tube is fixedly arranged between the outer side of the lower extending hollow tube and the upper longitudinal hollow tube. The bottom of the lower extending hollow tube is fixedly provided with an upper turntable connecting piece, and the upper turntable connecting piece is provided with a turntable connecting hole, and the upper universal turntable is connected through the turntable connecting hole. The bottom of the upper longitudinal hollow tube is fixedly provided with an upper supporting foot connecting piece, and the upper supporting foot connecting piece is provided with an adjustment connecting hole, and the upper supporting foot is longitudinally adjusted through the adjustment connecting hole, and the adjustment connecting hole is communicated with the upper longitudinal hollow tube.

[0012] Fixed connection blocks are respectively fixedly arranged on the front and rear sides of the lower longitudinal hollow tube and the side of the upper transverse hollow tube facing the lower longitudinal hollow tube, and are respectively fixedly connected to the horizontal fixed tubes through the fixed connection blocks.

[0013] A lifting connection block is also fixedly provided on the upper longitudinal hollow tube, and the lifting section fixed tube is fixedly connected through the lifting connection block. The lifting section fixed tube and the upper longitudinal hollow tube are perpendicular to each other. A lifting bent hollow tube is also fixedly provided on the lifting section fixed tube. The lifting bent hollow tube is bent toward the outside of the lifting section, and a lifting extension hollow tube is fixedly provided on it. A lifting extension tube connection block is fixedly provided on the lifting extension hollow tube, and the tube is fixedly connected to the outside of the lifting section through the lifting extension tube connection block.

[0014] The utility model improves the above-mentioned structure and utilizes the supporting feet on the supporting tripod to support the lower horizontal section, and / or the lifting section, and / or the upper horizontal section, thereby providing effective supporting force for the entire fuselage main body, so as to avoid the top-heavy phenomenon of the lifting equipment, reduce the problem of it tipping over and being damaged during the material lifting and conveying process, and thus improve the stability and safety of the use of the lifting equipment. At the same time, the supporting feet can be adjusted longitudinally, so that the lifting equipment can be placed stably even in uneven places, ensuring the stable placement and operation of the lifting equipment. In addition, the fuselage main body can also be moved by the universal wheel, so that the fuselage main body can be moved at any time according to the user's usage needs, thereby meeting different material lifting and conveying needs, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the assembly structure of the lower horizontal support leg, the upper horizontal support leg, the lifting section fixing pipe, and the horizontal fixing pipe.

[0018] Figure 4 This is a schematic diagram of the exploded structure of the lower horizontal support leg, upper horizontal support leg, lifting section fixing pipe, and horizontal fixing pipe.

[0019] Figure 5 Schematic diagram of the assembly structure of the lower horizontal support bracket.

[0020] Figure 6 This is a schematic diagram of the assembly structure of the lower horizontal support bracket from another perspective.

[0021] Figure 7 Schematic diagram of the exploded structure of the lower horizontal support frame.

[0022] Figure 8 This is a schematic diagram of the decomposed structure of the lower horizontal support bracket from another perspective.

[0023] Figure 9 Schematic diagram of the assembly structure of the upper horizontal support tripod.

[0024] Figure 10 This is a schematic diagram of the assembly structure of the upper horizontal support bracket from another perspective.

[0025] Figure 11 Schematic diagram of the exploded structure of the upper horizontal support tripod.

[0026] Figure 12 Another perspective diagram of the upper horizontal support structure DETAILED DESCRIPTION

[0027] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] See also Figures 1-12 The supporting structure of the lifting equipment includes a fuselage body, which is composed of a lower horizontal section A, a lifting section B and an upper horizontal section D. A supporting leg is provided at the bottom of the lower horizontal section A and / or the lifting section B and / or the upper horizontal section D. The supporting leg is made of multiple hollow pipes and / or sheet metal parts, and a universal wheel and a longitudinally adjustable supporting leg are provided at the bottom.

[0030] This embodiment uses the support feet on the support tripod to support the lower horizontal section A, and / or the lifting section B, and / or the upper horizontal section D, thereby providing effective support force for the entire fuselage body to avoid the top-heavy phenomenon of the lifting equipment, reduce the problem of it tipping over and being damaged during the material lifting and conveying process, and thus improve the stability and safety of the use of the lifting equipment. At the same time, the support feet can be adjusted longitudinally, so that the lifting equipment can be placed stably on uneven places, ensuring the stable placement and operation of the lifting equipment. In addition, the fuselage body can also be moved through the universal wheels, so that the fuselage body can be moved at any time according to the user's usage needs, thereby meeting different material lifting and conveying needs, and is highly practical.

[0031] In this embodiment, the lower horizontal section A, the lifting section B and the upper horizontal section D are connected end to end in sequence and form a Z shape or an S shape. Chains are rotated on the lower horizontal section A, the lifting section B and the upper horizontal section D. A plurality of bowl and plate groups C for holding materials are evenly driven and connected on the chains. A driving device 10 is provided on the upper horizontal section D. The driving device 10 is connected to the chain drive. When working, the driving device 10 drives the chain to rotate on the horizontal section A, the lifting section B and the upper horizontal section D. When the chain rotates, it drives the plurality of bowl and plate groups C to move, thereby realizing the lifting and transportation of materials.

[0032] A lower horizontal support leg E is fixedly installed at the bottom of the lower horizontal section A, and an upper horizontal support leg F is fixedly installed at the bottom of the upper horizontal section D. The lower horizontal support leg E and the upper horizontal support leg F are respectively provided with one or more hollow pipes, and are respectively spliced by multiple hollow pipes. A lifting section fixing pipe 26 is fixedly installed between the lower horizontal support leg E and / or the upper horizontal support leg F and the lifting section B.

[0033] There are multiple lower horizontal support legs E, which are fixed at intervals along the extension direction of the lower horizontal section A. Horizontal fixing pipes 27 are fixed between the lower horizontal support legs E and the upper horizontal support legs F, and between adjacent lower horizontal support legs E.

[0034] In this embodiment, multiple horizontal support legs E provide support for the lower horizontal section A, and one upper horizontal support leg F is provided to provide support for the upper horizontal section D. The lower horizontal support leg E and / or the upper horizontal support leg F also use the lifting section fixing pipe 26 to provide support for the lifting section B, which not only effectively provides support for the entire fuselage body, but also avoids the problem of deformation of the fuselage body during the material lifting and conveying process. In addition, the provision of the horizontal fixing pipe 27 can improve the compactness of the connection between the lower horizontal support leg E and the upper horizontal support leg F, and between adjacent lower horizontal support legs E, and can ensure the structural stability and firm assembly of the support leg.

[0035] The lower horizontal support frame E and the upper horizontal support frame F are both made of hollow pipes, and the lifting section fixing pipe 26 and the horizontal fixing pipe 27 are also hollow pipes, which facilitates production and reduces production costs.

[0036] Specifically, the lower horizontal support frame E includes a lower transverse hollow tube E1, and lower longitudinal hollow tubes E2 are fixedly provided on the left and right sides of the top of the lower transverse hollow tube E1, and a lower curved hollow tube E3 is fixedly provided on the top of the lower longitudinal hollow tube E2. The lower curved hollow tube E3 is bent toward the outside of the lower horizontal section A, and a lower curved tube connecting block E4 is fixedly provided on it. The lower curved hollow tube E3 is fixedly connected to the outside of the lower horizontal section A through the lower curved tube connecting block E4.

[0037] In this embodiment, the lower transverse hollow tube E1, the lower longitudinal hollow tubes E2 on the left and right sides, the lower curved hollow tube E3, and the lower curved tube connecting block E4 cooperate with each other to make the lower horizontal support frame E as a whole U-shaped.

[0038] The lower wheel connecting parts E5 and the lower supporting foot connecting parts E6 are fixedly provided on the left and right sides of the bottom of the lower horizontal hollow tube E1. The lower wheel connecting part E5 is provided with a wheel connecting hole, and is connected to the lower universal wheel E7 through the wheel connecting hole. The lower supporting foot connecting part E6 is provided with an adjustment connecting hole, and is longitudinally adjustable to the lower supporting foot E8 through the adjustment connecting hole. The adjustment connecting hole is communicated with the lower longitudinal hollow tube E2 to avoid the longitudinal adjustment of the lower supporting foot E8.

[0039] A fixed angle code E9 is further fixedly provided between the lower transverse hollow tube E1 and the lower longitudinal hollow tube E2, thereby further improving the assembly stability between the lower transverse hollow tube E1 and the lower longitudinal hollow tube E2.

[0040] The upper horizontal support frame F includes an upper transverse hollow tube F1, which is provided in multiple numbers and spaced longitudinally. Upper longitudinal hollow tubes F2 are fixedly provided on the left and right sides of the upper transverse hollow tube F1, and an upper curved hollow tube F3 is fixedly provided on the top of the upper longitudinal hollow tube F2. The upper curved hollow tube F3 bends toward the outside of the upper horizontal section D, and an upper extension hollow tube F4 is fixedly provided on it. An upper extension tube connecting block F5 is fixedly provided on the upper extension hollow tube F4, and the upper extension tube F4 is fixedly connected to the outer side of the upper horizontal section D through the upper extension tube connecting block F5.

[0041] In this embodiment, there are two upper horizontal hollow tubes F1, the upper horizontal hollow tubes F1, the upper longitudinal hollow tubes F2 on the left and right sides, the upper curved hollow tube F3, the upper extension hollow tube F4, and the upper extension tube connecting block F5, which cooperate with each other to make the upper horizontal support frame F in a well shape as a whole.

[0042] Lower extending hollow tubes F6 are fixedly provided on the left and right sides of the bottom of the upper horizontal hollow tube F1 located at the bottom, and a hollow reinforcing tube F7 is fixedly provided between the outer side of the lower extending hollow tube F6 and the upper longitudinal hollow tube F2, thereby further improving the assembly stability between the outer side of the lower extending hollow tube F6 and the upper longitudinal hollow tube F2.

[0043] An upper wheel connector F8 is fixedly provided at the bottom of the lower extending hollow tube F6, and a wheel connecting hole is provided on the upper wheel connector F8, through which the upper universal wheel F9 is connected. An upper support leg connector F10 is fixedly provided at the bottom of the upper longitudinal hollow tube F2, and an adjustment connecting hole is provided on the upper support leg connector F10, through which the upper support leg F11 is longitudinally adjustable. The adjustment connecting hole is communicated with the upper longitudinal hollow tube F2 to provide clearance for longitudinal adjustment of the upper support leg F11.

[0044] Fixed connecting blocks 28 are fixedly arranged on the front and rear sides of the lower longitudinal hollow tube E2 and the side of the upper transverse hollow tube F1 facing the lower longitudinal hollow tube E2, and the horizontal fixed tubes 27 are fixedly connected through the fixed connecting blocks 28, thereby improving the assembly stability between the lower longitudinal hollow tube E2, the upper transverse hollow tube F1, and the fixed connecting blocks 28.

[0045] A lifting connection block 29 is also fixedly provided on the upper longitudinal hollow tube F2, and the lifting section fixed tube 26 is fixedly connected through the lifting connection block 29. The lifting section fixed tube 26 and the upper longitudinal hollow tube F2 are perpendicular to each other. A lifting bent hollow tube 30 is also fixedly provided on the lifting section fixed tube 26. The lifting bent hollow tube 30 is bent toward the outside of the lifting section B, and a lifting extension hollow tube 31 is fixedly provided on it. A lifting extension hollow tube 31 is fixedly provided with a lifting extension tube connection block 32, and is fixedly connected to the outside of the lifting section B through the lifting extension tube connection block 32.

[0046] In this embodiment, the lower longitudinal hollow tube E2, the upper longitudinal hollow tube F2, and the lifting connection block 29 are all fixedly connected to the lower horizontal section A, the upper horizontal section D, and the lifting section B respectively in a lateral matching manner, thereby avoiding occupying the internal space of the fuselage body, so that the chain rotary guide, the bowl and plate group C movable guide and other components can be assembled inside the fuselage body, which not only improves the space utilization rate, but also improves the guarantee for the stable operation of the lifting equipment. In addition, it can also provide lateral support force for the outer side of the fuselage body, avoiding the problem of the fuselage body shaking left and right or even sideways tipping during the material lifting and conveying process.

[0047] In this embodiment, the lower transverse hollow tube E1, the lower longitudinal hollow tube E2, the lower curved hollow tube E3, the lower curved tube connecting block E4, the lower runner connecting piece E5, the lower supporting leg connecting piece E6, the fixed angle bracket E9, the horizontal fixed tube 27, the fixed connecting block 28, and the lower horizontal section A are fixed to each other by welding, and the upper transverse hollow tube F1, the upper longitudinal hollow tube F2, the upper curved hollow tube F3, the upper extension hollow tube F4, the upper extension tube connecting block F5, the lower extension hollow tube F6, the hollow reinforcement tube F7, the upper runner connecting piece F8, the upper supporting leg connecting piece F10, the horizontal fixed tube 27, the fixed connecting block 28, the lifting connecting block 29, the lifting section fixed tube 26, the lifting curved hollow tube 30, the lifting extension hollow tube 31, the lifting extension tube connecting block 32, the lifting section B, and the upper horizontal section D are fixed to each other by welding. In this way, not only is it ensured that the assembly between the various components is stable and not loose, but the welding process is simple, the processing is easy, and the cost is low.

[0048] In addition, the lower transverse hollow tube E1, the lower longitudinal hollow tube E2, the lower curved hollow tube E3, the upper transverse hollow tube F1, the upper longitudinal hollow tube F2, the upper curved hollow tube F3, the upper extension hollow tube F4, the lower extension hollow tube F6, the horizontal fixed tube 27, the lifting section fixed tube 26, the lifting curved hollow tube 30, and the lifting extension hollow tube 31 are all hollow tubes with square cross-sections, and the hollow reinforcement tube F7 is a hollow tube with a circular cross-section.

[0049] The above is a preferred embodiment of the present invention, which illustrates and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention, which is defined by the appended claims and their equivalents.

Claims

1. A support structure for a lifting device, comprising a main body, characterized in that: The fuselage body is composed of a lower horizontal section (A), a lifting section (B) and an upper horizontal section (D); the bottom of the lower horizontal section (A), and / or the lifting section (B), and / or the upper horizontal section (D) is provided with a supporting tripod, the supporting tripod is made of a plurality of hollow pipes and / or sheet metal parts, and the bottom is provided with a universal wheel and a longitudinally adjustable supporting foot; the bottom of the lower horizontal section (A) is fixedly provided with a lower horizontal supporting tripod (E), the bottom of the upper horizontal section (D) is fixedly provided with an upper horizontal supporting tripod (F), and a lifting section fixing tube (26) is fixedly provided between the lower horizontal supporting tripod (E) and / or the upper horizontal supporting tripod (F) and the lifting section (B).

2. The support structure of the lifting device according to claim 1, characterized in that: The lower horizontal support frame (E) and the upper horizontal support frame (F) are respectively provided with one or more and are respectively formed by splicing a plurality of hollow pipes.

3. The support structure of the lifting device according to claim 2, characterized in that: The lower horizontal support legs (E) are provided with a plurality of them and are fixedly arranged at intervals along the extension direction of the lower horizontal section (A); horizontal fixing tubes (27) are fixedly arranged between the lower horizontal support legs (E) and the upper horizontal support legs (F) and between adjacent lower horizontal support legs (E).

4. The support structure of the lifting device according to claim 3, characterized in that: The lower horizontal support frame (E) comprises a lower transverse hollow tube (E1), lower longitudinal hollow tubes (E2) are fixedly arranged on the left and right sides of the top of the lower transverse hollow tube (E1), a lower curved hollow tube (E3) is fixedly arranged on the top of the lower longitudinal hollow tube (E2), the lower curved hollow tube (E3) is bent toward the outside of the lower horizontal section (A), and a lower curved tube connecting block (E4) is fixedly arranged on the lower curved hollow tube (E3), and the lower curved hollow tube (E3) is fixedly connected to the outside of the lower horizontal section (A) through the lower curved tube connecting block (E4).

5. The support structure of the lifting device according to claim 4, characterized in that: A lower wheel connecting member (E5) and a lower supporting foot connecting member (E6) are fixedly provided on both left and right sides of the bottom of the lower transverse hollow tube (E1); a wheel connecting hole is provided on the lower wheel connecting member (E5), and a lower universal wheel (E7) is connected via the wheel connecting hole; an adjustment connecting hole is provided on the lower supporting foot connecting member (E6), and a lower supporting foot (E8) is longitudinally adjustable via the adjustment connecting hole; the adjustment connecting hole is in communication with the lower longitudinal hollow tube (E2).

6. The support structure of the lifting device according to claim 4, characterized in that: A fixed angle code (E9) is also fixedly provided between the lower transverse hollow tube (E1) and the lower longitudinal hollow tube (E2).

7. The support structure of the lifting device according to claim 4, characterized in that: The upper horizontal support frame (F) includes an upper transverse hollow tube (F1), wherein a plurality of the upper transverse hollow tubes (F1) are provided and spaced longitudinally. Upper longitudinal hollow tubes (F2) are fixedly provided on the left and right sides of the upper transverse hollow tube (F1), and an upper curved hollow tube (F3) is fixedly provided on the top of the upper longitudinal hollow tube (F2). The upper curved hollow tube (F3) bends toward the outside of the upper horizontal section (D) and an upper extension hollow tube (F4) is fixedly provided on the upper curved hollow tube (F3). An upper extension tube connecting block (F5) is fixedly provided on the upper extension hollow tube (F4), and the upper extension hollow tube (F4) is fixedly connected to the outer side of the upper horizontal section (D) via the upper extension tube connecting block (F5).

8. The support structure of the lifting device according to claim 7, characterized in that: Lower extending hollow tubes (F6) are fixedly provided on the left and right sides of the bottom of the upper transverse hollow tube (F1) located at the bottom, respectively; a hollow reinforcing tube (F7) is fixedly provided between the outer side of the lower extending hollow tube (F6) and the upper longitudinal hollow tube (F2); an upper rotating wheel connecting member (F8) is fixedly provided on the bottom of the lower extending hollow tube (F6); a rotating wheel connecting hole is provided on the upper rotating wheel connecting member (F8), and an upper universal rotating wheel (F9) is connected to the upper rotating wheel connecting hole; an upper supporting foot connecting member (F10) is fixedly provided on the bottom of the upper longitudinal hollow tube (F2); an adjusting connecting hole is provided on the upper supporting foot connecting member (F10), and an upper supporting foot (F11) is longitudinally adjustablely connected to the upper longitudinal hollow tube (F2); the adjusting connecting hole is communicated with the upper longitudinal hollow tube (F2).

9. The support structure of the lifting device according to claim 7, characterized in that: Fixed connection blocks (28) are respectively fixedly arranged on the front and rear sides of the lower longitudinal hollow tube (E2) and the side of the upper transverse hollow tube (F1) facing the lower longitudinal hollow tube (E2), and are respectively fixedly connected to the horizontal fixed tube (27) through the fixed connection blocks (28).

10. The support structure of the lifting device according to claim 7, characterized in that: The upper longitudinal hollow tube (F2) is also fixedly provided with a lifting connection block (29), and is fixedly connected to the lifting section fixed tube (26) through the lifting connection block (29). The lifting section fixed tube (26) and the upper longitudinal hollow tube (F2) are perpendicular to each other. The lifting section fixed tube (26) is also fixedly provided with a lifting bent hollow tube (30). The lifting bent hollow tube (30) is bent toward the outside of the lifting section (B) and is fixedly provided with a lifting extension hollow tube (31). The lifting extension hollow tube (31) is fixedly provided with a lifting extension tube connection block (32) and is fixedly connected to the outside of the lifting section (B) through the lifting extension tube connection block (32).

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