A jackable lattice-type spanning frame

Abstract

The present invention discloses a jacking lattice-type crossing frame, including two supporting units and a sealing net. The supporting unit includes a first truss. Both ends of the first truss are respectively provided with columns. The columns are formed by connecting a plurality of standard sections end to end in sequence. A lifting device is provided on the outer side of the lower end of the column. The lifting device includes a jacking frame and a base frame. A jacking cylinder for driving the jacking frame to slide up and down relative to the base frame is provided between the jacking frame and the base frame. A supporting frame is provided on the upper side of the jacking frame. The outer end of the supporting frame is rotatably connected to the jacking frame. Support plates matching the supporting frame are evenly provided on the columns in the vertical direction. An avoidance cylinder is provided on the jacking frame below the supporting frame. The lattice-type crossing frame has a jacking function. The installation and disassembly process does not require the aid of a large lifting vehicle, which simplifies the disassembly process and reduces the difficulty of disassembly.

Description

Technical Field

[0001] The invention relates to the technical field of electric power construction equipment, in particular to a jackable lattice-type spanning frame. Background Art

[0002] At present, during the construction of spanning structures in power transmission line projects, bamboo spanning frames or steel pipe spanning frames are mostly used. The mechanical properties of bamboo spanning frames are poor, and the weight of steel pipe spanning frames is large. At the same time, both of them have the problems of large construction volume and high construction cost in places with spanning sections with large spanning heights and angles.

[0003] As a more advanced lattice span, it has the advantages of high safety and small footprint compared to traditional bamboo spans and steel pipe spans. However, the current lattice span requires large lifting vehicles during installation and disassembly, and the disassembly process is complicated and difficult. Summary of the invention

[0004] In view of the above problems, the present invention provides a jackable lattice-type crossing frame, which has a jacking function and does not require the use of large-scale lifting vehicles during the installation and disassembly process, thereby simplifying the disassembly process and reducing the difficulty of disassembly.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A jackable lattice-type spanning frame, comprising two support units and a sealing net located between the two support units, wherein the support unit includes a first truss, and columns are respectively arranged at both ends of the first truss, wherein the columns are formed by connecting a plurality of standard sections end to end in sequence, and a lifting device is arranged on the outer side of the lower end of the column;

[0007] The lifting device comprises a jacking frame and a bottom frame which are sequentially sleeved on the outside of the column from top to bottom, the jacking frame is slidably connected with the bottom frame, and a jacking cylinder is arranged between the jacking frame and the bottom frame for driving the jacking frame to slide up and down relative to the bottom frame;

[0008] A support frame is arranged on the upper side of the jacking frame, the outer end of the support frame is rotatably connected to the jacking frame, the inner end of the support frame extends to the inside of the jacking frame, and support plates matching the support frame are evenly arranged on the columns in the vertical direction;

[0009] The jacking frame is provided with an avoidance oil cylinder below the support frame, the cylinder body of the avoidance oil cylinder is fixedly connected to the jacking frame, the piston rod of the avoidance oil cylinder can pass through the jacking frame and extend to the top of the jacking frame, when the piston rod of the avoidance oil cylinder is extended, the support frame can be lifted up, thereby avoiding the support plate on the column;

[0010] The lower end of the base frame is provided with an escape gap for allowing the standard section to enter and exit.

[0011] Furthermore, a plurality of guide assemblies are arranged inside the base frame along the vertical direction, each group of guide assemblies includes four guide assemblies, and the four guide assemblies are respectively arranged on the four corners of the base frame, and the guide assemblies include a guide frame body, and the guide frame body is rotatably provided with a first guide wheel and a second guide wheel, and the first guide wheel and the second guide wheel are respectively pressed on two adjacent side surfaces of the column.

[0012] Furthermore, the column comprises, from top to bottom, a first column section formed by connecting a plurality of first standard sections end to end in sequence, and a second column section formed by connecting a plurality of second standard sections end to end in sequence, and the cross-sectional size of the first standard section is smaller than the cross-sectional size of the second standard section;

[0013] The support plate comprises a first support plate arranged on the first column segment and a second support plate arranged on the second column segment;

[0014] The jacking frame is provided with an adjusting crankshaft, the adjusting crankshaft comprises a central shaft section and an adjusting shaft section, the central shaft section is rotatably connected to a mounting plate fixedly provided on the jacking frame, and the outer end of the supporting frame is rotatably connected to the adjusting shaft section;

[0015] An adjusting hand wheel is sleeved on the central shaft section, and the adjusting hand wheel has only the freedom to slide axially relative to the central shaft section, a limit plate is fixedly provided on the central shaft section at one side of the adjusting hand wheel, and a spring is provided between the limit plate and the adjusting hand wheel, a positioning plate is fixedly provided on the lifting frame at the other side of the adjusting hand wheel, a first positioning hole and a second positioning hole are respectively provided on the positioning plate at both sides of the central shaft section, and a positioning column is provided on the adjusting hand wheel;

[0016] When the positioning column matches with the first positioning hole, the support bracket matches with the second support plate; when the positioning column matches with the second positioning hole, the support bracket matches with the first support plate;

[0017] The guide assembly cooperates with the second column section.

[0018] Further, the base frame includes two vertical frames with the same structure and arranged symmetrically in front and back, and connecting components are respectively arranged on the left and right sides of the vertical frames between the two vertical frames, and the connecting components include a plurality of second cross beams arranged in the vertical direction and a second diagonal brace located between two adjacent second cross beams, and both ends of the second cross beam and the second diagonal brace are fixedly connected to the vertical frame in a detachable manner;

[0019] The jacking frame comprises two sub-frames with the same structure and arranged symmetrically front and back, and the two sub-frames are fixedly connected as a whole in a detachable manner;

[0020] The left and right ends of the sub-frame are respectively provided with guide columns, and the left and right ends of the vertical frame are respectively provided with guide holes matched with the guide columns.

[0021] Furthermore, a lifting cylinder is arranged between the sub-frame and the vertical frame on the same side, supporting frames are arranged on both sides of the lifting cylinder on the sub-frame, and an avoidance cylinder is arranged on the sub-frame below each supporting frame;

[0022] An adjusting crankshaft is arranged on the outer side of each sub-frame, and the adjusting crankshaft includes two adjusting shaft sections, and the outer end of the supporting bracket is rotatably connected to the corresponding adjusting shaft section.

[0023] Furthermore, a moving trolley is arranged between the two vertical frames, and a track matching with the moving trolley is arranged on the vertical frames.

[0024] Furthermore, a second truss is provided between the two columns, and two ends of the second truss are fixedly connected to the second column section in a detachable manner.

[0025] Furthermore, the first truss is formed by connecting a plurality of third standard sections in sequence end to end, and the second truss is formed by connecting a plurality of fourth standard sections in sequence end to end.

[0026] Furthermore, a plurality of pulley assemblies are evenly distributed on the first truss along the length direction of the first truss.

[0027] Furthermore, a cross bar is provided on the upper side surface of the first truss, and two ends of the cross bar are respectively provided with horn bars extending obliquely outward and upward.

[0028] The beneficial effects of the present invention are:

[0029] The embodiment of the present application provides a jackable lattice crossing frame, which realizes the self-jacking function of the lattice crossing frame by arranging a lifting device on the outside of the column. In this way, the installation and disassembly of the lattice crossing frame can be completed without the help of a large lifting vehicle, which simplifies the disassembly process and reduces the difficulty of disassembly compared with the traditional lattice crossing frame.

[0030] In addition, since the liftable lattice-type crossing frame provided in the embodiment of the present application does not require the aid of lifting equipment during installation and disassembly, its height will not be limited by the lifting height of the lifting equipment, and the height of the lattice-type crossing frame can be determined according to the specific requirements of the on-site construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A front view of a support unit of a jackable lattice-type spanning frame provided in an embodiment of the present application;

[0032] Figure 2 is a schematic diagram of the three-dimensional structure of the support unit;

[0033] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0034] Figure 4 for Figure 2 A schematic diagram of the enlarged structure of part B;

[0035] Figure 5 for Figure 2 A schematic diagram of the enlarged structure of the middle C part;

[0036] Figure 6 It is a three-dimensional structural schematic diagram of the lifting device;

[0037] Figure 7 It is an exploded view of the lifting device;

[0038] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of the D part;

[0039] Fig. 9 for Figure 7 A schematic diagram of the enlarged structure of part E in the middle;

[0040] Fig.10 is a side view of the lifting device;

[0041] Fig.11 for Fig.10 A schematic diagram of the enlarged structure of the F part;

[0042] Fig.12 for Fig.10 AA section view in;

[0043] Fig.13 for Fig.12 A schematic diagram of the enlarged structure of the G portion;

[0044] Fig.14 The three-dimensional structure diagram of the adjusting hand wheel;

[0045] Fig.15 A schematic diagram of the three-dimensional structure of the adjustable crankshaft;

[0046] Fig.16 To avoid the state diagram of the support bracket when the cylinder piston rod is extended;

[0047] Fig.17 The installation process of a jacking lattice spanning frame provided in the embodiment of the present application is as follows: Figure 1 ;

[0048] Fig.18 The installation process of a jacking lattice spanning frame provided in the embodiment of the present application is as follows: Figure 2 ;

[0049] Fig.19 The installation process of a jacking lattice spanning frame provided in the embodiment of the present application is as follows: Figure 3 ;

[0050] Fig. 20 The installation process of a jacking lattice spanning frame provided in the embodiment of the present application is as follows: Figure 4 ;

[0051] Fig.21 The installation process of a jacking lattice spanning frame provided in the embodiment of the present application is as follows: Figure 5 ;

[0052] Fig. 22 The installation process of a jacking lattice spanning frame provided in the embodiment of the present application is as follows: Figure 6 ;

[0053] Fig.23 The installation process of a jacking lattice spanning frame provided in the embodiment of the present application is as follows: Figure 7 ;

[0054] Fig.24 The installation process of a jacking lattice spanning frame provided in the embodiment of the present application is as follows: Figure 8 .

[0055] In the figure: 1, first truss; 11, pulley assembly; 12, cross bar; 121, first leg; 13, clevis bar; 131, second leg;

[0056] 2. column; 21. first column section; 211. first support plate; 22. second column section, 221. second support plate;

[0057] 3. Lifting device; 31. Lifting frame; 311. Subframe; 3111. Web beam; 3112. Wing beam; 3113. Flange plate; 3114. Guide column; 3115. Mounting plate; 32. Base frame; 321. Vertical frame; 3211. Vertical beam; 3212. First horizontal beam; 3213. First diagonal brace; 3214. Anchor plate; 3215. Guide cylinder; 3216. Track; 32161. Baffle; 3217. Rib beam; 322. Second horizontal beam; 323. Second diagonal brace; 324. Guide assembly; 3241. Cross plate; 3242. First vertical plate; 3243. First guide wheel ; 3244, second vertical plate; 3245, second guide wheel; 325, mobile trolley; 3251, bracket; 3252, wheel; 3253, guide positioning plate; 33, lifting cylinder; 34, supporting bracket; 341, web plate; 342, wing plate; 343, ear plate; 35, avoidance cylinder; 36, adjusting crankshaft; 361, central shaft section; 3611, limit plate; 362, adjusting shaft section; 363, connecting plate; 37, adjusting hand wheel; 371, positioning column; 372, second mounting hole; 38, spring; 39, positioning plate, 391, first positioning hole; 392, second positioning hole;

[0058] 4. Second truss. DETAILED DESCRIPTION

[0059] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described in detail below in conjunction with the drawings in the embodiments of the present application, and the described embodiments are only part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by those skilled in the art without creative work on the basis of the embodiments of the present application shall belong to the protection scope of the present application.

[0060] For the convenience of description, the coordinate system is defined as Figure 2 As shown, the left-right direction is the horizontal direction, the front-back direction is the longitudinal direction, and the up-down direction is the vertical direction.

[0061] A jackable lattice-type spanning frame comprises support units located on both sides of a section to be spanned, a sealing net is set up between the two support units and at the top ends of the support units, the support units and the sealing net together form a gantry structure and span the section to be spanned.

[0062] like Figure 1 and Figure 2As shown, the support unit includes a first truss 1, and columns 2 for supporting the first truss 1 are respectively arranged at both ends of the first truss 1. The column 2 is formed by a plurality of standard sections connected end to end in sequence, and two adjacent standard sections are fixedly connected in a detachable manner. Exemplarily, two adjacent standard sections are fixedly connected by a bolt assembly. A lifting device 3 is arranged on the outer side of the lower end of the column 2, and the lifting device 3 can realize the jacking and lengthening of the column 2.

[0063] The column 2 adopts a standard section with a square cross-section as a component of the column 2, which reduces the types and quantity of parts. The regular structural dimensions can improve the loading and unloading efficiency and the safety during transportation, and reduce the complexity of on-site installation.

[0064] like Figure 2 , Figure 5 and Figure 6 As shown, the lifting device 3 includes a jacking frame 31 and a bottom frame 32 which are sequentially sleeved on the outside of the column 2 from top to bottom, and the jacking frame 31 is slidably connected with the bottom frame 32, and the jacking frame 31 can slide up and down relative to the bottom frame 32. A jacking cylinder 33 is arranged between the jacking frame 31 and the bottom frame 32 for driving the jacking frame 31 to slide up and down relative to the bottom frame 32. The lower end of the bottom frame 32 is provided with an avoidance gap to allow the standard section to enter and exit.

[0065] As a specific implementation, the lifting frame 31 described in this embodiment is a square frame structure, and the four corners of the lifting frame 31 are respectively fixed with guide columns 3114 extending downward perpendicular to the lifting frame 31. The projection of the base frame 32 in the horizontal plane is a square structure, and the four corners of the base frame 32 are respectively provided with guide holes corresponding to the guide columns 3114, and the guide columns 3114 cooperate with the corresponding guide holes to realize the sliding connection between the lifting frame 31 and the base frame 32. Exemplarily, the guide columns 3114 are fixedly connected to the lifting frame 31 by welding. In order to improve the connection strength between the lifting frame 31 and the guide columns 3114, the lifting frame 31 is provided with a first mounting hole for accommodating the guide columns 3114, and the upper end of the guide columns 3114 is inserted into the first mounting hole and fixedly connected to the lifting frame 31 by welding. The upper end surface of the guide columns 3114 is flush with the upper side surface of the lifting frame 31.

[0066] A lifting cylinder 33 is provided between the lifting frame 31 and the base frame 32 on the front and rear sides of the column 2. The cylinder body of the lifting cylinder 33 is fixedly connected to the base frame 32, and the rod end of the piston rod of the lifting cylinder 33 is fixedly connected to the lifting frame 31.

[0067] Support brackets 34 are provided on both sides of each of the lifting cylinders 33 on the jacking frame 31. The support brackets 34 are located on the upper side of the jacking frame 31, and the outer ends of the support brackets 34 (the side away from the inside of the jacking frame 31 is the outer side) are rotatably connected to the outer side surface of the jacking frame 31, and the inner ends of the support brackets 34 extend to the inside of the jacking frame 31. A plurality of support plate groups are evenly distributed on the upright column 2 along the vertical direction, and each of the support plate groups includes a support plate corresponding to the support brackets 34 one by one, and when the support brackets 34 are overlapped on the jacking frame 31 under the action of their own gravity, the inner end surface of the support brackets 34 is located on the inner side of the outer end surface of the support plate, that is, the projection of the support bracket 34 in the horizontal plane overlaps with the projection of the support plate in the horizontal plane.

[0068] As a specific implementation, the support bracket 34 described in this embodiment includes a web 341, and wing plates 342 extending downward perpendicularly to the web 341 are respectively provided on both sides of the web 341, and ear plates 343 are provided on the outer ends of the wing plates 342. Mounting plates 3115 are fixedly provided on both sides of each support bracket 34 on the outer side surface of the jacking frame 31 by welding, and the ear plates 343 are rotatably connected to the mounting plates 3115. The support bracket 34 is overlapped on the jacking frame 31 under the action of its own gravity, and at this time, the web 341 is in a horizontal state.

[0069] The jacking frame 31 is provided with a bypass oil cylinder 35 corresponding to the support frame 34, and the bypass oil cylinder 35 is located below the corresponding support frame 34. The cylinder body of the bypass oil cylinder 35 is fixedly connected to the jacking frame 31, and the piston rod of the bypass oil cylinder 35 can pass through the jacking frame 31 and extend to the top of the jacking frame 31. The jacking frame 31 is provided with a first bypass hole for accommodating the piston rod of the bypass oil cylinder 35. Fig.16 As shown, when the piston rod of the avoidance oil cylinder 35 is extended, the support bracket 34 can be lifted up, so that the support bracket 34 is turned upward and tilted, thereby avoiding the support plate on the column 2.

[0070] like Figure 4As shown, a plurality of guide assemblies 324 are arranged in the vertical direction inside the base frame 32, each guide assembly 324 includes four guide assemblies 324, and the four guide assemblies 324 are respectively arranged at the four corners of the base frame 32. The guide assembly 324 includes a guide frame body fixedly arranged on the base frame 32, and the first guide wheel 3243 and the second guide wheel 3245 are rotatably arranged on the guide frame body. The first guide wheel 3243 and the second guide wheel 3245 are arranged vertically, and the first guide wheel 3243 and the second guide wheel 3245 are respectively pressed on two adjacent side surfaces of the column 2, so as to provide guidance for the column 2.

[0071] Furthermore, in order to facilitate the installation and disassembly of the spanning frame, Figure 7 As shown, the base frame 32 includes two vertical frames 321 with the same structure and arranged symmetrically in front and back, and the vertical frames 321 include two vertical beams 3211, and a plurality of first cross beams 3212 are evenly arranged between the two vertical beams 3211 in the vertical direction, and the two ends of the first cross beams 3212 are fixedly connected to the vertical beams 3211 by welding. Two first diagonal braces 3213 are arranged between two adjacent first cross beams 3212, and the two first diagonal braces 3213 are symmetrically arranged. The two ends of the first diagonal braces 3213 are fixedly connected to the first cross beams 3212 by welding. An anchor plate 3214 is fixedly arranged on the lower end surface of the vertical beam 3211 by welding. Connecting components are respectively arranged on the left and right sides of the vertical frames 321 between the two vertical frames 321, and the connecting components include a plurality of second cross beams 322 evenly arranged in the vertical direction and a second diagonal brace 323 located between two adjacent second cross beams 322. Both ends of the second cross beam 322 and the second diagonal brace 323 are fixedly connected to the stand 321 via bolt assemblies.

[0072] As a specific implementation, in this embodiment, the distance between the second cross beam 322 at the bottom and the anchor plate 3214 is greater than the height of the standard section. That is, the two vertical frames 321 and the second cross beam 322 at the bottom together form an avoidance gap allowing the standard section to enter and exit.

[0073] The lifting frame 31 includes two sub-frames 311 with the same structure and arranged symmetrically front and back, and the two sub-frames 311 are fixedly connected as a whole in a detachable manner. The sub-frame 311 includes a web beam 3111, and the left and right ends of the web beam 3111 are respectively provided with wing beams 3112 extending inwardly (with the opposite side of the two sub-frames 311 as the inner side) perpendicular to the web beam 3111. One end of the wing beam 3112 is fixedly connected to the web beam 3111 by welding, and the other end of the wing beam 3112 is fixedly provided with a flange plate 3113 by welding, and the flange plates 3113 of the two sub-frames 311 are fixedly connected by a bolt assembly. A guide column 3114 extending downwardly perpendicular to the sub-frame 311 is provided at the connection between the web beam 3111 and the wing beam 3112 of the sub-frame 311.

[0074] A lifting cylinder 33 is arranged between the sub-frame 311 and the vertical frame 321 located on the same side. The lower end of the cylinder body of the lifting cylinder 33 is fixedly connected to the upper end surface of the vertical frame 321 through a mounting seat, and the rod end of the piston rod of the lifting cylinder 33 is fixedly connected to the belly beam 3111 of the sub-frame 311.

[0075] The web beam 3111 of the sub-frame 311 is provided with support brackets 34 on both sides of the jacking cylinder 33, and the web beam 3111 is provided with avoidance cylinders 35 below each of the support brackets 34. The installation structure of the support brackets 34 and the avoidance cylinders 35 has been described above and will not be repeated here.

[0076] As a specific implementation, the vertical beam 3211 described in this embodiment is made of angle steel, and the opening of the vertical beam 3211 faces inward. The first crossbeam 3212 located at the uppermost side is located above the vertical beam 3211, that is, the upper end surface of the vertical beam 3211 is fixedly connected to the first crossbeam 3212 by welding. A guide cylinder 3215 matching the guide column 3114 is arranged inside the vertical beam 3211, and the upper end of the guide cylinder 3215 passes through the first crossbeam 3212 and is flush with the upper side surface of the first crossbeam 3212. The guide cylinder 3215 is fixedly connected to the first crossbeam 3212 by welding, and the guide column 3114 is inserted into the guide cylinder 3215 to achieve guidance.

[0077] As a specific implementation method, Figure 8As shown, the guide frame body described in this embodiment includes two horizontal plates 3241 with an angled structure, and the horizontal plate 3241 includes a first mounting portion and a second mounting portion arranged vertically. Two first vertical plates 3242 are arranged between the two first mounting portions along the extension direction of the first mounting portion, and the upper and lower ends of the first vertical plates 3242 are fixedly connected to the horizontal plate 3241 by welding. A first guide wheel 3243 is rotatably arranged between the two first vertical plates 3242. Two second vertical plates 3244 are arranged between the two second mounting portions along the extension direction of the second mounting portion, and the upper and lower ends of the second vertical plates 3244 are fixedly connected to the horizontal plate 3241 by welding. A second guide wheel 3245 is rotatably arranged between the two second vertical plates 3244. The transverse plate 3241 is provided with a second avoidance hole for accommodating the guide cylinder 3215. The transverse plate 3241 is fixedly connected to the vertical beam 3211 by welding, and the guide cylinder 3215 is fixedly connected to the transverse plate 3241 of the guide frame by welding.

[0078] In this way, the sub-frame 311, the upright frame 321, the lifting cylinder 33, the avoidance cylinder 35 and the supporting frame 34 located on the same side form an installation unit, which facilitates the installation and disassembly of the spanning frame as a whole.

[0079] Further, in order to move the standard section into the base frame 32, as Figure 6 and Figure 7 As shown, a moving trolley 325 is arranged between the two uprights 321, and a track 3216 matching the moving trolley 325 is arranged on the upright 321. One end of the track 3216 is fixedly connected to the upright 321 by welding, and the other end of the track 3216 extends to the outside of the base frame 32. Exemplarily, a rib beam 3217 is arranged between the suspended end of the track 3216 and the upright 321, one end of the rib beam 3217 is fixedly connected to the upright 321 by welding, and the other end of the rib beam 3217 is fixedly connected to the suspended end of the track 3216 by welding.

[0080] Furthermore, if Figure 7 , Fig.10 and Fig.11As shown, the mobile trolley 325 includes a bracket 3251, and at least two wheels 3252 matching the track 3216 are respectively arranged on both sides of the bracket 3251. The track 3216 includes a connecting portion, and the lower end of the connecting portion is provided with a guide portion extending inwardly (with the side opposite to the two vertical frames 321 as the inner side) perpendicular to the connecting portion, and the connecting portion and the guide portion together form an angle structure. As a specific implementation, the track 3216 described in this embodiment is made of angle steel. The wheel 3252 includes a first shaft section and a second shaft section in sequence from the outside to the inside (with the side opposite to the two vertical frames 321 as the inner side), and the diameter of the first shaft section is smaller than the diameter of the second shaft section, and a step surface is formed between the first shaft section and the second shaft section. The step surface is in contact with the inner end surface of the guide portion of the track 3216, that is, the distance between the step surfaces of the wheels 3252 located on both sides is equal to the distance between the inner end surfaces of the guide portions of the two tracks 3216.

[0081] Four guide positioning plates 3253 are provided on the upper side of the bracket 3251 . When the standard section is placed on the bracket 3251 , the guide positioning plates 3253 limit the freedom of horizontal movement of the standard section on the bracket 3251 .

[0082] In this way, the relative position between the standard section and the trolley is fixed by the guide positioning plate 3253, and the position of the trolley in the front-to-back direction can be positioned by the cooperation between the wheel 3252 and the track 3216. Therefore, when the standard section is placed on the bracket 3251, the relative position of the standard section and the base frame 32 in the front-to-back direction is fixed. In this way, when installing the standard section, it is only necessary to move the trolley 325 left and right to align the connecting holes of the standard section to be installed and the installed standard section, without adjusting the position of the standard section to be installed in the front-to-back direction.

[0083] Furthermore, in order to prevent the trolley from escaping, as Fig. 9 As shown, a baffle 32161 is fixedly provided at the suspended end of the track 3216 .

[0084] Furthermore, in order to reduce the deadweight of the column 2, as Figure 1 and Figure 2 As shown, the column 2 includes a first column section 21 and a second column section 22 from top to bottom, the first column section 21 is formed by connecting a plurality of first standard sections in sequence end to end, the second column section 22 is formed by connecting a plurality of second standard sections in sequence end to end, and the cross-sectional size of the first standard section is smaller than the cross-sectional size of the second standard section. The second standard section at the uppermost end and the first standard section at the lowermost end are fixedly connected by a bolt assembly.

[0085] Correspondingly, a plurality of groups of first support plates 211 are evenly distributed along the vertical direction on the first column section 21, and each of the first support plates 211 includes a first support plate 211 corresponding one-to-one to the support bracket 34; a plurality of groups of second support plates 221 are evenly distributed along the vertical direction on the second column section 22, and each of the second support plates 221 includes a second support plate 221 corresponding one-to-one to the support bracket 34.

[0086] like Fig.10 and Fig.12 As shown, the front and rear sides of the jacking frame 31 are respectively provided with an adjusting crankshaft 36. Fig.15 As shown, the adjusting crankshaft 36 includes a central shaft section 361 and an adjusting shaft section 362 corresponding to the supporting bracket 34 one by one, and connecting plates 363 at both ends of the adjusting shaft section 362 are fixedly connected to the central shaft section 361 .

[0087] like Fig.12 and Fig.13 As shown, the two ear plates 343 of the support bracket 34 are both provided with a first through hole for accommodating the corresponding adjustment shaft segment 362, that is, the support bracket 34 is mounted on the corresponding adjustment shaft segment 362, and the ear plates 343 of the support bracket 34 are rotatably connected with the corresponding adjustment shaft segment 362. The mounting plate 3115 is provided with a second through hole matched with the central shaft segment 361, and the central shaft segment 361 of the adjustment crankshaft 36 can rotate around its own axis in the second through hole.

[0088] like Figure 5 As shown, the central shaft section 361 is sleeved with an adjusting hand wheel 37, and the adjusting hand wheel 37 has only the freedom of axial sliding relative to the central shaft section 361. A limit plate 3611 is fixedly provided on one side of the adjusting hand wheel 37 on the central shaft section 361, and a spring 38 is sleeved on the central shaft section 361 between the adjusting hand wheel 37 and the limit plate 3611. A positioning plate 39 is fixedly provided on the other side of the adjusting hand wheel 37 on the lifting frame 31, and a third through hole for accommodating the central shaft section 361 is provided on the positioning plate 39. A first positioning hole 391 and a second positioning hole 392 are respectively provided on both sides of the third through hole on the positioning plate 39, and the axes of the first positioning hole 391, the second positioning hole 392 and the third through hole jointly determine a first plane, and the first plane is parallel to the lifting frame 31. A positioning column 371 is fixedly provided on the side of the adjusting hand wheel 37 facing the positioning plate 39.

[0089] like Figure 5As shown, when the positioning column 371 is matched with the first positioning hole 391, the distance that the inner end of the support bracket 34 extends to the inside of the lifting frame 31 is short, and at this time, the support bracket 34 can be matched with the second support plate 221 on the second column section 22; Fig.21 As shown, when the positioning column 371 cooperates with the second positioning hole 392, the inner end of the support bracket 34 extends a longer distance into the lifting frame 31, and at this time the support bracket 34 can cooperate with the first support plate 211 on the first column section 21.

[0090] As a specific implementation, the limit plate 3611 described in this embodiment is fixedly arranged on the end surface of one end of the central shaft section 361. The spring 38 and the adjusting hand wheel 37 are sequentially sleeved on the inner side of the limit plate 3611 on the central shaft section 361. Fig.14 As shown, the adjusting hand wheel 37 is provided with a second mounting hole 372 with a regular hexagonal cross-sectional shape, and the cross-sectional shape of the portion of the central shaft segment 361 that matches the adjusting hand wheel 37 is consistent with the second mounting hole 372 .

[0091] The square cross-sectional dimensions allowed to pass through determined by the four guide assemblies 324 in the same group are consistent with the cross-sectional dimensions of the second standard section.

[0092] Furthermore, if Figure 1 and Figure 2 As shown, a second truss 4 is provided between the two columns 2, and both ends of the second truss 4 are respectively fixedly connected to the second column segment 22 in a detachable manner. As a specific implementation, in this embodiment, both ends of the second truss 4 are respectively fixedly connected to the second column segment 22 by bolt assemblies, and the upper side surface of the second truss 4 is flush with the upper end surface of the second column segment 22.

[0093] Furthermore, the first truss 1 is formed by connecting a plurality of third standard sections end to end in sequence, and two adjacent third standard sections are fixedly connected by bolt assemblies. The second truss 4 is formed by connecting a plurality of fourth standard sections end to end in sequence, and two adjacent fourth standard sections are fixedly connected by bolt assemblies.

[0094] Furthermore, a plurality of pulley assemblies 11 are evenly arranged on the first truss 1 along the length direction of the first truss 1. By arranging the pulley assemblies 11 on the first truss 1, when laying the sealing net, the lifting work of the sealing net can be completed by the traction machine and the rope, which is convenient for laying the sealing net. At the same time, when installing the second truss 4, the lifting of the second truss 4 can also be completed by the traction machine, the rope and the pulley assembly 11 arranged on the first truss 1, avoiding the use of other lifting equipment.

[0095] Furthermore, if Figure 1 , Figure 2 and Figure 3 As shown, a cross bar 12 is provided on the upper side of the first truss 1, and a plurality of first legs 121 for supporting the cross bar 12 are evenly distributed along the axial direction on the cross bar 12, and the lower ends of the first legs 121 are fixedly connected to the first truss 1 through bolt assemblies. The two ends of the cross bar 12 are respectively provided with horn bars 13 extending obliquely outward and upward.

[0096] As a specific implementation method, Figure 3 As shown, in this embodiment, the two horn bars 13 are both located on one side of the cross bar 12, and the two ends of the horn bars 13 are respectively provided with second legs 131 for supporting the horn bars 13, and the lower ends of the second legs 131 are fixedly connected to the first truss 1 through bolt assemblies. The projections of the cross bar 12 and the horn bars 13 in the vertical plane have an intersection.

[0097] By setting the horn bar 13 and the cross bar 12, during the construction process, it can be ensured that the installed wires are within the range of the cross bar 12. The horn bar 13 is tilted, which can effectively prevent the wires from slipping off the cross bar 12 during the construction process, even if the wires are always within the range supported by the sealing net.

[0098] The installation process is:

[0099] First, as Fig.10 As shown, in order from bottom to top, the distance from the second guide assembly 324 to the lower end of the vertical beam 3211 is M. Fig.17 As shown, firstly, the first standard sections are connected end to end to complete the assembly of the first column section 21, and a plurality of second standard sections are installed at the lower end of the first column section 21, so that the height N of the second column section 22 is greater than M at this time.

[0100] Second, if Fig.18 As shown, the first truss 1 , the pulley assembly 11 , the crossbar 12 and the clevis rod 13 are assembled, and the column 2 assembled in the first step is installed on the first truss 1 .

[0101] Third, install the base (not shown) and stand up the frame assembled in the second step, and temporarily fix the lower end of the column 2 to the base through a bolt assembly. Since the height of the frame is not high at this time, there is no need to use large-scale lifting equipment, and the frame can be erected by holding the pole and pulling the wire.

[0102] Fourth, if Fig.19 and Fig. 20As shown, the installation units of the lifting device 3 are placed on the front and rear sides of the column 2, and the anchor plate 3214 at the lower end of the vertical beam 3211 of the installation unit is fixedly installed on the base. Then, the two sub-frames 311 of the two jacking frames 31 are connected and fixed, and the vertical frames 321 of the two installation units are connected and fixed by the second cross beam 322 and the second diagonal brace 323, and the mobile trolley 325 is placed on the track 3216. Fig.21 As shown, at this time, the positioning column 371 cooperates with the second positioning hole 392, and the inner end of the support bracket 34 extends a long distance into the lifting frame 31, which can cooperate with the first support plate 211 on the first column section 21.

[0103] Fifth, remove the connection assembly between the column 2 and the base.

[0104] Sixth, if Fig. 22 As shown, the piston rod of the lifting cylinder 33 is then extended to drive the lifting frame 31 to move upward. At this time, the support frame 34 will support the first support plate 211 on the first column section 21 to drive the column 2 to move upward until the piston rod of the lifting cylinder 33 is fully extended. At this time, the distance between the lower end of the column 2 and the upper side of the moving trolley 325 is greater than the height of the second standard section.

[0105] Seventh, such as Fig.23 As shown, the second standard section to be installed is placed in the moving trolley 325, and the moving trolley 325 is moved to align the second standard section to be installed with the second standard section at the lower end of the column 2.

[0106] Eighth, the piston rod of the lifting cylinder 33 retracts, driving the lifting frame 31 to move downward. When the lifting frame 31 is moving downward, when the support frame 34 interferes with the first support plate 211, the support frame 34 will flip upward under the action of the first support plate 211, thereby avoiding the first support plate 211, until the support frame 34 moves below the first support plate 211. At this time, the support frame 34 will flip downward under the action of its own gravity until it overlaps the lifting frame 31. This is repeated until the piston rod of the lifting cylinder 33 is completely retracted.

[0107] During this process, the downward movement of the lifting frame 31 will cause the column 2 to move downward together with the lifting frame 31 until the lower end of the column 2 is pressed tightly against the second standard section to be installed.

[0108] Ninth, the second standard section to be installed is fixedly connected to the second standard section at the lowermost end of the column 2 by means of a bolt assembly.

[0109] Tenth, repeat the sixth to ninth steps, when the support bracket 34 needs to cooperate with the second support plate 221 on the second column segment 22, as shown in FIG. Figure 5 As shown, first move the adjusting hand wheel 37 outward, at which time the spring 38 is compressed until the positioning column 371 is disengaged from the second positioning hole 392, then turn the adjusting hand wheel 37 to align the positioning column 371 with the first positioning hole 391, then release the adjusting hand wheel 37, and the positioning column 371 will be inserted into the first positioning hole 391 under the restoring force of the spring 38. At this time, the inner end of the support bracket 34 extends to a small distance inside the lifting frame 31, and can form a match with the second support plate 221 on the second column section 22.

[0110] Eleventh, repeat the operation from step 6 to step 9 until Fig.24 As shown, the distance that the upper end of the second column segment 22 extends out of the lifting device 3 is greater than the thickness of the second truss 4. Then, the second truss 4 is hoisted by a traction machine, a rope, and a pulley assembly 11 arranged on the first truss 1 until the upper side surface of the second truss 4 is flush with the upper end surface of the second column segment 22, and then the two ends of the second truss 4 are fixedly connected to the second column segment 22 by a bolt assembly.

[0111] Twelfth, repeat the operations from step 6 to step 9 until the height of the support unit reaches the design requirement.

[0112] Thirteenth, the sealing net is hoisted by means of a traction machine, a rope and a pulley assembly 11 arranged on the first truss 1 to achieve the laying of the sealing net.

[0113] The disassembly process is similar to the installation process, the difference is that when disassembling the second standard section of the column 2, the support bracket 34 needs to pass over the first support plate located above the support bracket 34. This process is achieved by the avoidance cylinder 35, that is, the piston rod of the avoidance cylinder 35 extends to lift the support bracket 34, thereby forming an avoidance.

[0114] Other embodiments obtained by those skilled in the art by combining, splitting, reorganizing, etc. the embodiments of the present application on the basis of the embodiments provided in the present application do not exceed the protection scope of the present application.

[0115] The above specific implementation methods have detailed the purpose, technical solutions and beneficial effects of the embodiments of the present application. The above are only specific implementation methods of the embodiments of the present application and are not used to limit the protection scope of the embodiments of the present application. That is, any modifications, equivalent substitutions, improvements, etc. made on the basis of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A jackable lattice spanning frame, comprising two support units and a sealing net located between the two support units, characterized in that: The support unit comprises a first truss (1), and columns (2) are respectively arranged at both ends of the first truss (1), and the columns (2) are formed by connecting a plurality of standard sections end to end in sequence, and a lifting device (3) is arranged on the outer side of the lower end of the column (2); The lifting device (3) comprises a lifting frame (31) and a bottom frame (32) which are sequentially sleeved on the outside of the column (2) from top to bottom, the lifting frame (31) is slidably connected to the bottom frame (32), and a lifting cylinder (33) is provided between the lifting frame (31) and the bottom frame (32) for driving the lifting frame (31) to slide up and down relative to the bottom frame (32); A support frame (34) is arranged on the upper side of the lifting frame (31), the outer end of the support frame (34) is rotatably connected to the lifting frame (31), the inner end of the support frame (34) extends to the inside of the lifting frame (31), and support plates matching the support frame (34) are evenly arranged on the columns (2) in the vertical direction; An avoidance oil cylinder (35) is provided on the jacking frame (31) below the support frame (34); the cylinder body of the avoidance oil cylinder (35) is fixedly connected to the jacking frame (31); the piston rod of the avoidance oil cylinder (35) can pass through the jacking frame (31) and extend to the top of the jacking frame (31); when the piston rod of the avoidance oil cylinder (35) is extended, the support frame (34) can be lifted up, thereby avoiding the support plate on the column (2); The lower end of the base frame (32) is provided with an escape notch for allowing the standard section to enter and exit; A plurality of guide assemblies (324) are arranged inside the base frame (32) along the vertical direction, each guide assembly (324) comprises four guide assemblies (324), and the four guide assemblies (324) are respectively arranged at four corners of the base frame (32), the guide assemblies (324) comprise a guide frame body, a first guide wheel (3243) and a second guide wheel (3245) are rotatably arranged on the guide frame body, and the first guide wheel (3243) and the second guide wheel (3245) are respectively pressed against two adjacent side surfaces of the column (2); The column (2) comprises, from top to bottom, a first column section (21) formed by connecting a plurality of first standard sections in sequence end to end, and a second column section (22) formed by connecting a plurality of second standard sections in sequence end to end, wherein the cross-sectional dimensions of the first standard sections are smaller than the cross-sectional dimensions of the second standard sections; The support plate comprises a first support plate (211) arranged on the first column section (21) and a second support plate (221) arranged on the second column section (22); The jacking frame (31) is provided with an adjusting crankshaft (36), the adjusting crankshaft (36) comprising a central shaft section (361) and an adjusting shaft section (362), the central shaft section (361) being rotatably connected to a mounting plate (3115) fixedly arranged on the jacking frame (31), and the outer end of the supporting frame (34) is rotatably connected to the adjusting shaft section (362); An adjusting hand wheel (37) is sleeved on the central shaft section (361), and the adjusting hand wheel (37) has only the degree of freedom to slide axially relative to the central shaft section (361); a limiting plate (3611) is fixedly provided on one side of the adjusting hand wheel (37) on the central shaft section (361), and a spring (38) is provided between the limiting plate (3611) and the adjusting hand wheel (37); a positioning plate (39) is fixedly provided on the other side of the adjusting hand wheel (37) on the lifting frame (31); a first positioning hole (391) and a second positioning hole (392) are respectively provided on the positioning plate (39) on both sides of the central shaft section (361); and a positioning column (371) is provided on the adjusting hand wheel (37); When the positioning column (371) matches with the first positioning hole (391), the support frame (34) matches with the second support plate (221); when the positioning column (371) matches with the second positioning hole (392), the support frame (34) matches with the first support plate (211); The guide assembly (324) cooperates with the second column section (22).

2. The jackable lattice spanning frame according to claim 1, characterized in that: The base frame (32) comprises two vertical frames (321) of identical structure and arranged symmetrically in front and back, and connecting components are respectively arranged on the left and right sides of the vertical frames (321) between the two vertical frames (321), and the connecting components comprise a plurality of second cross beams (322) arranged in a vertical direction and second diagonal braces (323) located between two adjacent second cross beams (322), and both ends of the second cross beams (322) and the second diagonal braces (323) are fixedly connected to the vertical frames (321) in a detachable manner; The jacking frame (31) comprises two sub-frames (311) having the same structure and arranged symmetrically front and back, and the two sub-frames (311) are fixedly connected to form a whole in a detachable manner; The left and right ends of the sub-frame (311) are respectively provided with guide columns (3114), and the left and right ends of the vertical frame (321) are respectively provided with guide holes that match the guide columns (3114).

3. The jackable lattice spanning frame according to claim 2, characterized in that: A lifting cylinder (33) is provided between the sub-frame (311) and the vertical frame (321) located on the same side; supporting frames (34) are respectively provided on both sides of the lifting cylinder (33) on the sub-frame (311); and an avoidance cylinder (35) is provided on the sub-frame (311) below each supporting frame (34); An adjusting crankshaft (36) is provided on the outer side of each sub-frame (311), and the adjusting crankshaft (36) comprises two adjusting shaft sections (362), and the outer end of the supporting frame (34) is rotatably connected to the corresponding adjusting shaft section (362).

4. The jackable lattice spanning frame according to claim 2, characterized in that: A moving trolley (325) is arranged between the two vertical frames (321), and a track (3216) matching with the moving trolley (325) is arranged on the vertical frames (321).

5. The jackable lattice spanning frame according to claim 1, characterized in that: A second truss (4) is provided between the two upright posts (2), and both ends of the second truss (4) are fixedly connected to the second upright post section (22) in a detachable manner.

6. The jackable lattice spanning frame according to claim 5, characterized in that: The first truss (1) is formed by connecting a plurality of third standard sections in sequence end to end, and the second truss (4) is formed by connecting a plurality of fourth standard sections in sequence end to end.

7. The jackable lattice spanning frame according to claim 1, characterized in that: A plurality of pulley assemblies (11) are evenly distributed on the first truss (1) along the length direction of the first truss (1).

8. The jackable lattice spanning frame according to claim 1, characterized in that: A cross bar (12) is provided on the upper side surface of the first truss (1), and two ends of the cross bar (12) are respectively provided with horn bars (13) extending obliquely outward and upward.

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