Lattice pier column mounting device and mounting method

Abstract

The invention provides a lattice pier column installation device and method, and relates to the field of steel structure installing.The lattice pier column installation device comprises a lifting appliance upper body, a lifting appliance lower body and a plurality of lifting ropes, the lifting ropes are fixedly connected to the three corners of the lifting appliance upper body, and the top ends of the lifting ropes are fixedly connected with supporting and hanging brackets used for providing pulling force for the lifting ropes; movable supporting parts used for supporting the supporting and hanging frame are installed on the two sides of the supporting and hanging frame, each movable supporting part comprises a positioning block and a movable block, and the positioning blocks and the movable blocks are rotationally connected to the inner side of the supporting and hanging frame. The supporting and hanging bracket can always tension the lifting ropes in different states in the steel lattice lifting and overturning process, so that the lifting ropes which are not stressed originally provide tensile force upwards under the traction of the supporting and hanging bracket, the stress of the lifting belts is more uniform when the steel lattice is lifted, and the stability of the steel lattice is kept when the steel lattice is lifted.

Description

Technical Field

[0001] The present invention relates to the field of steel structure installation, and specifically to a lattice pier column installation device and an installation method. Background Technique

[0002] A lattice column is a building form with strong bending resistance. Its characteristic is to arrange the material area far from the inertia axis, which can enhance the bending performance of the member under the condition of the same axial resistance and save materials.

[0003] When the steel lattice column section is turned over, generally two cranes are needed to horizontally lift the steel lattice column section, and then turn the steel lattice column section to make it vertical. Since the steel lattice column section is generally lifted by three slings when adjusted to the horizontal, and the overall lifting tool installed at the end of the steel lattice column section is lifted. During the lifting process of the steel lattice column section, at this time, the two slings under the lifting tool need to bear the pressure of lifting the steel lattice column section, and one sling above the lifting tool is not stressed during the lifting to the turning process of the steel lattice column section, resulting in uneven stress on the slings of the lifting tool. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a lattice pier column installation device and an installation method, which can make the three lifting ropes bear force simultaneously during the lifting and turning to the vertical steel lattice column section, reduce the pressure on the two slings below during the vertical lifting and turning of the upper body of the lifting tool and the ground, and make the stress between the three slings more uniform, solving the problems raised in the above background technique.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: A lattice pier column installation device includes an upper body of the lifting tool, a lower body of the lifting tool, multiple lifting ropes, and a steel lattice column section. The lifting ropes are fixedly connected to three corners of the upper body of the lifting tool, and the top ends of the lifting ropes are fixedly connected with a support bracket for providing tension to each lifting rope. On both sides of the support bracket, there are movable support parts for supporting the support bracket. The movable support part includes a positioning block and a movable block. The positioning block is rotatably connected to the inner side of the support bracket;

[0006] A steel wire rope is fixedly connected to the inner side of the positioning block, the movable block is sleeved outside the steel wire rope, and the top end of the steel wire rope is fixedly connected with a hanging plate;

[0007] Guide grooves for guiding the sliding of the movable block are opened on both sides of the support bracket. The support bracket is of an irregular shape. When the upper body of the lifting tool is perpendicular to the ground and lifting, the steel wire rope exerts a pulling force on the movable block in the direction away from the upper body of the lifting tool, and one corner of the support bracket can support and tighten the lifting rope above the upper body of the lifting tool.

[0008] Preferably, the shape of the guide groove is a groove with a spiral line trajectory.

[0009] Preferably, during the process of adjusting the steel lattice column section from the horizontal state to the vertical state after hoisting, the movable block slides along the guiding groove to drive the steel wire rope to gradually change from the folded state to the straight state.

[0010] Preferably, after the steel lattice column section is completely upright, the support hanger continuously tightens the angle of the lifting rope that contacts but is not stressed by the lifting rope, and the movable block is directly above the positioning block.

[0011] Preferably, a guide wheel is installed on the inner side of the support hanger. When the steel lattice column section is hoisted, the guide wheel contacts the upper surface of the upper body of the lifting tool.

[0012] Preferably, the upper body and the lower body of the lifting tool are connected by the cooperation of an ear plate and an automatic plug-in pin.

[0013] Preferably, a plurality of connecting seats for cooperating with the steel lattice column section are installed on the lower surface of the lower body of the lifting tool, and the connecting seats are fixedly connected to the lifting lugs installed in the main pipes of the steel lattice column section by bolts.

[0014] Preferably, a storage battery and a winch are installed on the upper surface of the lower body of the lifting tool, and a lifting cage is installed at the movable end of the winch rope.

[0015] An installation method of a lattice pier column installation device includes the following steps:

[0016] S1: Connect the hook or sling of the truck crane to the lifting lug welded on the steel lattice column section, and connect the hook of the crawler crane to the lifting plate;

[0017] S2: Before hoisting, adjust the position of the movable block so that the movable block moves to one end of the guiding groove far from the positioning block, and then hoist;

[0018] S3: In the initial stage of hoisting, the truck crane and the crawler crane hoist separately. First, make the steel wire rope or sling of the truck crane, the steel wire rope connected to the lifting plate, and each lifting rope be tightened simultaneously but do not lift the steel lattice column section, and then the truck crane and the crawler crane hoist simultaneously to horizontally lift the steel lattice column section;

[0019] S4: When the steel lattice column section is lifted to a predetermined height, the truck crane slowly releases the hook, and at the same time, the hook of the crawler crane continues to lift. At this time, the steel lattice column section is turned over;

[0020] S5: During the turning process of the steel lattice column section, the tension of the steel wire rope pushes the movable block in the guiding groove to continuously push the support hanger to turn over and support and tighten the lifting rope above the upper body of the lifting tool, so that each lifting rope can provide tension to the steel lattice column section simultaneously until the steel lattice column section is completely erected;

[0021] S6: After the steel lattice column segment is fully erected, remove the lifting appliance of the truck crane and the lifting lug connecting the steel lattice column segment, check the hoisting conditions, confirm that all requirements are met, and after a 10-minute trial hoisting with no abnormal conditions, the crane slowly raises the boom and turns to the installation position;

[0022] S7: After checking that all parts are safe and correct, the ground personnel cooperate with the crane through the guy ropes to adjust the steel lattice column segment to its place. The surveyors measure the installation position of the hoisted segment to ensure that its overall verticality meets the specification requirements;

[0023] S8: After the segment is hoisted and in place, recheck the axis points set on the steel lattice column segment, and use a fine-tuning method to completely coincide the center of the steel lattice column segment with the center in the design drawing, and the segment hoisting work is completed.

[0024] Compared with the prior art, the present invention has the following beneficial effects: By fixing the top ends of the respective lifting ropes on the support bracket, the support bracket can always tighten the respective lifting ropes in different states during the hoisting and flipping of the steel lattice column segment, so that the originally non-loaded lifting ropes provide an upward pulling force under the traction of the support bracket, thereby making the respective slings more evenly stressed when hoisting the steel lattice column segment and maintaining the stability of the steel lattice column segment when hoisting the steel lattice column segment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of the present invention;

[0026] Figure 2 It is a schematic diagram of the state of the upper body of the lifting appliance and the support bracket when hoisting the steel lattice column segment of the present invention;

[0027] Figure 3 It is a side view of the upper body of the lifting appliance and the support bracket when hoisting the steel lattice column segment of the present invention;

[0028] Figure 4 It is a side view of the upper body of the lifting appliance and the support bracket in the vertical state of the steel lattice column segment of the present invention;

[0029] Figure 5 It is a schematic structural diagram of the support bracket of the present invention;

[0030] Figure 6 It is a schematic diagram of the connection structure of the positioning block, the movable block and the steel wire rope of the present invention;

[0031] Figure 7 It is a plan layout diagram of the embedded parts of the present invention;

[0032] Figure 8 It is an elevation layout diagram of the embedded parts of the present invention;

[0033] Figure 9 It is a schematic diagram of the vertical state of the steel lattice column segment of the present invention;

[0034] Figure 10 This is the plan view of the steel lattice column segment of the present invention;

[0035] Figure 11 This is the enlarged detail view of the node of the steel lattice column segment of the present invention.

[0036] Among them, 1. Upper body of the lifting appliance; 2. Lower body of the lifting appliance; 3. Lifting ropes; 4. Support hanger; 5. Positioning block; 6. Movable block; 7. Guide groove; 8. Steel wire ropes; 9. Lifting plate; 10. Guide wheels; 11. Automatic plug-in pins; 12. Storage battery; 13. Hoist; 14. Suspension cage; 15. Connecting steel plates; 16. Connecting angle steels; 17. Shear keys; 18. Steel lattice column segment; 19. Lacing pipes. Detailed implementation manners

[0037] As Figures 1-11 shown, a lattice pier column installation device includes an upper body 1 of the lifting appliance, a lower body 2 of the lifting appliance, multiple lifting ropes 3 and a steel lattice column segment 18. The lifting ropes 3 are fixedly connected to three corners of the upper body 1 of the lifting appliance. The top ends of the lifting ropes 3 are fixedly connected with a support hanger 4 for providing tension to each lifting rope 3. Activity support parts for supporting the support hanger 4 are installed on both sides of the support hanger 4. The activity support parts include a positioning block 5 and a movable block 6. The positioning block 5 is rotatably connected to the inner side of the support hanger 4. The support hanger 4 can tighten each lifting rope 3 when lifting the steel lattice column segment 18, so that each lifting rope 3 can be stressed simultaneously, preventing the state where only two lifting ropes 3 are stressed when lifting the steel lattice column segment 18 in the prior art, reducing the tension of the two lifting ropes 3 below the upper body 1 of the lifting appliance when lifting the steel lattice column segment 18. The positioning block 5 and the movable block 6 can support the support hanger 4. During the process of lifting the steel lattice column segment 18, the movable block 6 can tightly abut against the inner side of the support hanger 4, so that the support hanger 4 can maintain a stable posture to support the lifting ropes 3 above the upper body 1 of the lifting appliance, thereby enabling the support hanger 4 to always tighten each lifting rope 3 and making the lifting ropes 3 more evenly stressed. Among them, the main pipe of the steel lattice column segment 18 is made of Q355MD steel with a pipe diameter of 1.2 m, and a three-limb lattice space truss is adopted (as Figure 10 , Figure 11 shown), and they are connected by lacing pipes 19. The lacing pipes 19 are made of Q355MD steel with a pipe diameter of 0.5 m. When installing the first segment of the steel lattice column segment 18, it should be connected to the lattice column embedded parts buried in the bearing platform in advance (as Figure 7 , Figure 8 shown). The three main pipes of the embedded parts are made of Q355MD steel with a pipe diameter of 1.2 m, and are combined into a whole through 12 groups of connecting steel plates 15 and connecting angle steels 16. The overall height is 3 m, and it is embedded 2 m into the bearing platform. It mainly increases the contact area with the bearing platform through shear keys 17 and connecting steel plates 15 to ensure the stability and safety of the upper lattice column.

[0038] A wire rope 8 is fixedly connected to the inner side of the positioning block 5. The movable block 6 is sleeved outside the wire rope 8. The top end of the wire rope 8 is fixedly connected to the hanging plate 9. During the process of lifting and adjusting the steel lattice column section 18, the two lifting ropes 3 below the upper body 1 of the lifting tool can be pulled down from one end of the support hanger 4, so that the support hanger 4 is turned over and supported on the lifting rope 3 above the upper body 1 of the lifting tool. At the same time, when the wire rope 8 is tightened, a lateral force away from the upper body 1 of the lifting tool can be applied to the movable block 6, so that the support hanger 4 can maintain a stable and variable turning state and always apply a pulling force to the lifting rope 3 above the upper body 1 of the lifting tool;

[0039] Guide grooves 7 for guiding the sliding of the movable block 6 are provided on both sides of the support hanger 4. The support hanger 4 is of an irregular shape. When the upper body 1 of the lifting tool is perpendicular to the ground and lifting, the wire rope 8 applies a pulling force away from the upper body 1 of the lifting tool to the movable block 6. One corner of the support hanger 4 can support and tighten the lifting rope 3 above the upper body 1 of the lifting tool. The irregular-shaped support hanger 4 can be supported outside the lifting rope 3 above the upper body 1 of the lifting tool under the guidance of the movable block 6 and the guide groove 7. When the state is turned over and adjusted after the steel lattice column section 18 is lifted, the movable block 6 can slide in the guide groove 7, so that the lifting rope 3 above the upper body 1 of the lifting tool is always in a stressed state, thereby sharing the pulling force of the two lifting ropes 3 below the upper body 1 of the lifting tool.

[0040] Furthermore;

[0041] In an alternative embodiment, the shape of the guide groove 7 is a groove with a spiral trajectory. When the movable block 6 slides along the guide groove 7 with a spiral trajectory, the rotation axis of the movable block 6 will continuously change, and the distance between the movable block 6 and the rotation axis will gradually decrease when sliding towards the position close to the positioning block 5. The movable block 6 can continuously abut against the inner side of the guide groove 7. The guide groove 7 can provide a stable stress point for the movable block 6, guide and enable the movable block 6 to slide in a smooth state, prevent the movable block 6 from suddenly sliding to the other end of the guide groove 7 due to the lack of a suitable stress point during the sliding process in the guide groove 7, resulting in vibration of the steel lattice column section 18, and improve the stability when the steel lattice column section 18 is turned over.

[0042] In an alternative embodiment, during the process of adjusting the steel lattice column section 18 from a horizontal state to a vertical state after being lifted, the movable block 6 slides along the guide groove 7 to drive the wire rope 8 to gradually change from a folded state to a straight state. After the steel lattice column section 18 is lifted, the wire rope 8 can apply a lateral supporting force away from the upper part of the upper body 1 of the lifting tool to the movable block 6. By pushing the support hanger 4 through the movable block 6 to continuously support and tighten the lifting rope 3 above the upper body 1 of the lifting tool following the angle change of the steel lattice column section 18, the support hanger 4 provides a stable pulling force to the lifting rope 3 above the upper body 1 of the lifting tool.

[0043] In an optional embodiment, when the steel lattice column segment 18 is fully erected, the support bracket 4 continuously tightens the corner of the suspension rope 3 and contacts the suspension rope 3 but is not subjected to force, and the movable block 6 is directly above the positioning block 5. After the steel lattice column segment 18 is slowly adjusted to vertical, the suspension rope 3 tightened by the corner support at the end of the support bracket 4 will gradually tighten in the process of approaching the verticality of the steel lattice column segment 18, providing tension to the steel lattice column segment 18. The tension used by the corner of the support bracket 4 to support the suspension rope 3 will gradually decrease. After the steel lattice column segment 18 is fully vertical, the tension between the suspension ropes 3 tends to be equal. At this time, the corner of the support bracket 4 supported on the suspension rope 3 completely loses its supporting force on the suspension rope 3, preventing the corner of the support bracket 4 from affecting the angle and supporting force of the suspension rope 3, thereby maintaining uniform force between the suspension ropes 3.

[0044] In an optional embodiment, a guide wheel 10 is installed on the inner side of the support and hanger 4. When the steel lattice column segment 18 is lifted, the guide wheel 10 contacts the upper surface of the sling upper body 1. When the steel lattice column segment 18 is lifted in a state where the sling upper body 1 is vertical to the ground, the guide wheel 10 can guide the support and hanger 4 to move on the surface of the sling upper body 1, and make the support and hanger 4 maintain a fulcrum between the sling upper body 1. In the stage of lifting and adjusting the angle of the support and hanger 4, the corner support of the support and hanger 4 is more stable when it is tightened on the lifting rope 3 above the sling upper body 1, thereby reducing the displacement or shaking of the support and hanger 4 in the initial lifting stage and improving the stability of the support and hanger 4 during the initial lifting process.

[0045] In an optional embodiment, the upper body 1 of the sling and the lower body 2 of the sling are connected by ear plates and automatic plug-in pins 11. After the high-strength bolts are used to connect the main joint of the lattice column and the flange of the embedded part, the crawler crane controls the hook to release the hook, and the upper body 1 of the sling falls on the support of the lower body 2 of the sling. The automatic plug-in pin 11 is used to automatically pull the pin shaft out of the pin hole, so that the upper body 1 of the sling and the lower body 2 of the sling can be disconnected (such as Figure 9 shown).

[0046] In an optional embodiment, a plurality of connecting seats that cooperate with the steel lattice column segments 18 are installed on the lower surface of the hoist lower body 2. The connecting seats are fixedly connected to the lifting ears installed in the main pipes of the steel lattice column segments 18 by bolts. The connecting seats are used to connect the hoist lower body 2 and the steel lattice column segments 18 to each other, so as to facilitate the lifting and hoisting of the steel lattice column segments 18.

[0047] In an optional embodiment, a battery 12 and a winch 13 are installed on the upper surface of the lower body 2 of the sling, and a cage 14 is installed at the movable end of the rope of the winch 13. The winch 13 and the cage 14 can facilitate the lifting of installation materials and lift the installation materials or installation tools onto the working platform of the steel lattice column segment 18.

[0048] A method for installing a lattice pier column installation device comprises the following steps:

[0049] S1: Connect the hook or sling of the truck crane to the lifting lug welded on the steel lattice column section 18, connect the hook of the crawler crane to the lifting plate 9, and then fixedly connect the connecting seat at the bottom of the lower body 2 of the lifting tool to the lifting lug in the main pipe of the steel lattice column section 18 through bolts;

[0050] S2: Before lifting, adjust the position of the movable block 6 so that the movable block 6 moves to one end of the guiding groove 7 away from the positioning block 6, and then perform the lifting;

[0051] S3: In the initial stage of lifting, the truck crane and the crawler crane lift respectively. First, make the steel wire ropes or slings of the truck crane, the steel wire rope 8 connected to the lifting plate 9, and each lifting rope 3 be tightened simultaneously but do not lift the steel lattice column section 18. Then, the truck crane and the crawler crane lift simultaneously to horizontally lift the steel lattice column section 18;

[0052] S4: When the steel lattice column section 18 is lifted to the predetermined height, the truck crane slowly releases the hook, and at the same time, the hook of the crawler crane continues to lift. At this time, perform the turning operation on the steel lattice column section 18;

[0053] S5: During the turning process of the steel lattice column section 18, the pulling force of the steel wire rope 8 pushes the movable block 6 to continuously push the support hanger 4 to turn in the guiding groove 7 to support and tighten the lifting ropes 3 above the upper body 1 of the lifting tool, so that each lifting rope 3 can provide pulling force to the steel lattice column section 18 simultaneously until the steel lattice column section 18 is completely erected;

[0054] S6: After the steel lattice column section 18 is completely erected, remove the lifting tool of the truck crane and the lifting lug connected to the steel lattice column section 18, check the lifting working conditions, confirm that all requirements are met, and after a 10 - minute trial lift without abnormal conditions, the crane slowly raises the boom and turns to the installation position;

[0055] S7: After checking that all parts are safe and correct, the ground personnel cooperate with the crane through the guy ropes to adjust the steel lattice column section 18 to be in place. The surveyors measure the installation position of the lifted section to ensure that its overall verticality meets the specification requirements;

[0056] S8: After the section is lifted and in place, re - check the axis points set on the steel lattice column section 18, and use a fine - tuning method to completely coincide the center of the steel lattice column section 18 with the center of the design drawing, and the section lifting work is completed.

[0057] In use, the upper flange of the steel lattice column section 18 is connected to the hook of the crawler crane through the lower body 2 of the sling, the upper body 1 of the sling, the support hanger 4 and the lifting plate 9. The lower flange of the steel lattice column section 18 is connected to the truck crane through a lifting lug. The crawler crane is the main crane and the truck crane is the auxiliary crane. When lifting, move the movable block 6 to one end of the guiding groove 7 far from the positioning block 5. The main and auxiliary cranes lift the steel lattice column section 18 horizontally at the same time. After the steel lattice column section 18 is lifted, the steel wire rope 8 tightens the movable block 6, causing the movable block 6 to apply a pulling force in the direction away from the upper body 1 of the sling, so that the support hanger 4 can be turned over and one corner of the support hanger 4 tightly abuts against the sling rope on the upper body 1 of the sling, enabling each sling rope 3 to be stressed simultaneously. When reaching a certain height, the main crane continues to lift and the auxiliary crane slowly descends. At this time, the steel lattice column section 18 begins to turn over. During the process of the steel lattice column section 18 turning from horizontal to vertical, the pulling force of the steel wire rope 8 pushes the movable block 6 to continuously push the support hanger 4 to turn over in the guiding groove 7 to support and tighten the sling rope 3 above the upper body 1 of the sling, so that each sling rope 3 can provide a pulling force to the steel lattice column section 18 simultaneously until the steel lattice column section 18 is completely erected. Then, remove the sling and lifting lug of the auxiliary crane, check the hoisting conditions, confirm that all requirements are met, and after testing for 10 minutes without any abnormal situation, the crane slowly raises the boom and turns to the installation position. After checking that all parts are safe and correct, the ground personnel cooperate with the crane through guy ropes to adjust the steel component to be in place. The surveyor measures the installation position of the hoisted section and observes from two mutually perpendicular directions to ensure that its overall verticality meets the specification requirements. After the section is hoisted and in place, recheck the axis points set on the steel component, and use a fine-tuning method to completely coincide the center of the steel component with the center of the design drawing. The section hoisting work is basically completed, but the crawler crane cannot release the hook temporarily. According to the multiple 33mm bolt holes opened on the flange of the main pipe joint of the lattice column, use M30 high-strength bolts to connect the flanges correspondingly. The bolt grade is 10.9. The nuts and washers should be matched with it. Install the flange of the steel lattice column section 18 on the flange of the embedded part. Note that during the process of tightening the bolts, the observation should also continue to follow up to prevent affecting the installation accuracy. After the flange is firmly connected with high-strength bolts, use the crane to release the hook so that the upper body 1 of the sling falls on the support of the lower body 2 of the sling, and use the automatic plug-in pin 11 to realize the automatic extraction of the pin shaft from the pin hole, and the upper body 1 of the sling is disconnected from the lower body 2 of the sling. The crane lifts away the upper body 1 of the sling, and then proceeds with the subsequent welding work of the main pipe cladding and the joint bracing pipe 19.

[0058] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made therein without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lattice pier column installation device, comprising an upper sling body (1), a lower sling body (2), multiple lifting ropes (3) and a steel lattice column section (18). The lifting ropes (3) are fixedly connected to three corners of the upper sling body (1), and it is characterized in that: The top end of the suspension rope (3) is fixedly connected with a support bracket (4) for providing tensile force to each suspension rope (3). On both sides of the support bracket (4), movable support parts for supporting the support bracket (4) are installed. The movable support part includes a positioning block (5) and a movable block (6). The positioning block (5) is rotatably connected to the inner side of the support bracket (4). A steel wire rope (8) is fixedly connected to the inner side of the positioning block (5). The movable block (6) is sleeved on the outer side of the steel wire rope (8). The top end of the steel wire rope (8) is fixedly connected to the hanging plate (9). Guide grooves (7) for guiding the sliding of the movable block (6) are formed on both sides of the support bracket (4). The support bracket (4) is of an irregular shape. When the upper body (1) of the lifting tool is perpendicular to the ground and hoisting, the steel wire rope (8) exerts a tensile force on the movable block (6) in a direction away from the upper body (1) of the lifting tool. One corner of the support bracket (4) can support and tighten the suspension rope (3) above the upper body (1) of the lifting tool.

2. The lattice pier column installation device according to claim 1, wherein: The shape of the guide groove (7) is a groove with a spiral trajectory.

3. The lattice pier column installation device according to claim 2, characterized in that: During the process of adjusting the steel lattice column section (18) from a horizontal state to a vertical state after hoisting, the movable block (6) slides along the guide groove (7), driving the steel wire rope (8) to gradually change from a folded state to a straight state.

4. The lattice pier column installation device according to claim 3, characterized in that: After the steel lattice column section (18) is completely upright, the corner of the support bracket (4) that continuously tightens the suspension rope (3) contacts but is not stressed with the suspension rope (3), and the movable block (6) is directly above the positioning block (5).

5. The lattice pier column installation device according to claim 1, wherein: A guide wheel (10) is installed on the inner side of the support bracket (4). When hoisting the steel lattice column section (18), the guide wheel (10) contacts the upper surface of the upper body (1) of the lifting tool.

6. The lattice pier column installation device according to claim 1, characterized in that: The upper body (1) of the lifting tool and the lower body (2) of the lifting tool are connected by cooperation of an ear plate and an automatic plug-in pin (11).

7. The lattice pier column installation device according to claim 1, characterized in that: A plurality of connecting seats for cooperating with the steel lattice column section (18) are installed on the lower surface of the lower body (2) of the lifting tool. The connecting seats are fixedly connected to the lifting lugs in the main pipes of the steel lattice column section (18) by bolts.

8. The lattice pier column installation device according to claim 1, characterized in that: A storage battery (12) and a winch (13) are installed on the upper surface of the lower body (2) of the lifting tool. The movable end of the rope of the winch (13) is installed with a hanging cage (14).

9. A method for installing a lattice pier column installation device, comprising the lattice pier column installation device according to any one of claims 1-8, characterized in that, Including the following steps: S1: Connect the hook or sling of the truck crane to the lifting lug welded on the steel lattice column section (18), connect the hook of the crawler crane to the hanging plate (9), and then fixedly connect the connecting seat at the bottom of the lower body (2) of the lifting tool to the lifting lug in the main pipe of the steel lattice column section (18) by bolts. S2: Before hoisting, adjust the position of the movable block (6) to move the movable block (6) to one end of the guide groove (7) far from the positioning block (6), and then carry out hoisting. S3: In the initial stage of hoisting, the truck crane and the crawler crane hoist respectively. First, make the steel wire ropes or slings of the truck crane, the steel wire rope (8) connected to the hanging plate (9), and each suspension rope (3) be tightened simultaneously but not lift the steel lattice column section (18). Then, the truck crane and the crawler crane hoist simultaneously to horizontally lift the steel lattice column section (18). S4: When the steel lattice column section (18) is lifted to a predetermined height, the truck crane slowly releases the hook, and at the same time, the hook of the crawler crane continues to lift. At this time, the steel lattice column section (18) is turned over. S5: During the turnover process of the steel lattice column section (18), the pulling force of the steel wire rope (8) pushes the movable block (6) to continuously push the support hanger (4) to turn in the guiding groove (7) to support and tighten the lifting ropes (3) above the upper body (1) of the spreader, so that each lifting rope (3) can provide a pulling force on the steel lattice column section (18) simultaneously until the steel lattice column section (18) is completely erected. S6: After the steel lattice column section (18) is completely erected, remove the lifting lugs connecting the spreader of the truck crane and the steel lattice column section (18), check the hoisting conditions, confirm that all requirements are met, and after a 10-minute trial hoisting without abnormal conditions, the crane slowly raises the boom and turns to the installation position. S7: After checking that all parts are safe and correct, the ground personnel cooperate with the crane through the guy ropes to adjust the steel lattice column section (18) to its position, and the surveyors measure the installation position of the hoisted section to ensure that its overall verticality meets the specification requirements. S8: After the section is hoisted and in place, recheck the axis points set on the steel lattice column section (18), and use a fine-tuning method to completely coincide the center of the steel lattice column section (18) with the center of the design drawing, and the section hoisting work is completed.

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