Auxiliary tool for installing *-shaped support of tower drum

Abstract

The utility model discloses an auxiliary tool for installing a *-shaped support of a tower drum, and belongs to the technical field of wind power equipment production. Comprising a base, a plurality of pulleys on the lower side of the base, a vertical rod on the upper side of the base, a lifting rod on the upper portion of the vertical rod, a lifting coarse adjustment structure between the lower portion of the lifting rod and the vertical rod, a locking structure between the middle of the lifting rod and the vertical rod, a clamp on the upper portion of the lifting rod and used for clamping a star-shaped support, and a lifting fine adjustment structure between the clamp and the lifting rod. The vertical rod and the lifting rod are vertically arranged, the center of the *-shaped support is detachably arranged on the clamp, and the lifting rod is arranged on the vertical rod in a vertically adjustable mode and locked on the vertical rod through a locking structure. The clamp is located on the front side of the lifting rod, can be arranged on the lifting rod in a vertically adjustable mode and can rotate around the center of the *-shaped support. The device has the advantages of simple structure, simplicity in operation, reduction of labor intensity and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind power equipment production, and particularly relates to an auxiliary tooling for installing a M-shaped support of a tower. Background Art

[0002] The wind tower is a key equipment in a wind turbine. The tower is made up of multiple sections joined together by flanges. After the sections are welded together, they are sandblasted, painted and assembled with related accessories to form a finished section. The finished sections are transported to the wind turbine installation site and connected by bolts between flanges to form an integral wind tower.

[0003] Therefore, whether it is a semi-finished cylinder section or a finished cylinder section, the flange may be deformed due to its own weight or external force during the production, transportation and storage process. In this way, the finished cylinder sections cannot be interconnected at the wind turbine installation site, resulting in the inability to install the bolts smoothly. Therefore, Pozidriv supports are generally installed at the flanges at both ends during storage and transportation to ensure that the flanges are not deformed.

[0004] For example, the patent with application number CN201621206899.3 discloses a tower flange round steel Pozidriv support, including several tie rods supporting the flange, the several tie rods are staggered at the center of the flange, and the two ends of the tie rods are respectively fixed to the flange holes located at the two ends of the flange through a fixing mechanism.

[0005] In the prior art, the installation process of the cross-shaped support is as follows: the tower is suspended in the air by a forklift, one operator lifts the cross-shaped support, and another operator adjusts the height and angle of the cross-shaped support so that the fixing holes on the cross-shaped support correspond to the flange holes on the tower. The cross-shaped support usually needs to be adjusted multiple times to reach a suitable installation position. This is not only time-consuming and labor-intensive, but also takes up more time for the forklift. Utility Model Content

[0006] In order to solve the above problems, the embodiment of the utility model provides an auxiliary tooling for installing the M-shaped support of the tower, which has the advantages of simple structure, simple operation and reduced labor intensity. The technical solution is as follows:

[0007] The utility model embodiment provides an auxiliary tooling for installing a cross-shaped support of a tower, comprising a base 3, a plurality of pulleys 1 on the lower side of the base 3, a vertical pole 5 on the upper side of the base 3, a lifting rod 6 on the upper part of the vertical pole 5, a lifting coarse adjustment structure 7 between the lower part of the lifting rod 6 and the vertical pole 5, a locking structure 8 between the middle part of the lifting rod 6 and the vertical pole 5, a clamp 9 on the upper part of the lifting rod 6 and used for clamping the cross-shaped support 2, and a lifting fine adjustment structure 4 between the clamp 9 and the lifting rod 6; the vertical pole 5 and the lifting rod 6 are both vertically arranged, the center of the cross-shaped support 2 is detachably arranged on the clamp 9, the lifting rod 6 is arranged on the vertical pole 5 so as to be adjustable up and down and is locked on the vertical pole 5 by the locking structure 8; the clamp 9 is located on the front side of the lifting rod 6, it is arranged on the lifting rod 6 so as to be adjustable up and down, and it can rotate around the center of the cross-shaped support 2.

[0008] Specifically, the base 3 in the embodiment of the utility model is a rectangular frame structure arranged along the front-to-back direction; the vertical pole 5 is fixed in the middle of the base 3, and a reinforcing beam 11 is provided between the left and right sides and the rear side corresponding to the sides of the base 3; the reinforcing beam 11 is arranged obliquely away from the vertical pole 5 from top to bottom.

[0009] Specifically, the number of the pulleys 1 in the embodiment of the utility model is four and all of them are universal wheels. The four pulleys 1 are arranged in a rectangular shape and are respectively disposed on the four corners of the base 3 .

[0010] Specifically, the vertical pole 5 in the embodiment of the utility model is a channel steel open forward; the lifting rod 6 is a rectangular bar matched with the channel steel and is located in the notch of the vertical pole 5, and its upper and middle parts are respectively provided with upper bar holes 12 and lower bar holes 13 in the vertical direction.

[0011] The clamp 9 in the embodiment of the utility model includes a rotating seat 91, a rotating shaft 92, a fixing plate 93, a clamping plate 94 and eight clamping bolts 95; the rotating seat 91 is located at the front side of the lifting rod 6 and is a circular cover open to the front; the rotating shaft 92 is arranged in the front-back direction, and is coaxially arranged with the rotating seat 91, and passes through the upper strip hole 12 backward, and its rear part is rotatably arranged on the lifting fine-tuning structure 4, and is coaxially arranged with the M-shaped support 2; the clamping plate 94 and the fixing plate 93 are both circular plates, and the They are all coaxially arranged with the rotating shaft 92, and are respectively located on the front and rear sides of the M-shaped support 2; the fixed plate 93 is fixed on the front side of the rotating seat 91 and its diameter is larger than the diameter of the rotating seat 91; the clamping bolts 95 are arranged along the front and rear directions and their front and rear ends are respectively fixed on the clamping plate 94 and the fixed plate 93; the eight clamping bolts 95 are evenly distributed around the center of the fixed plate 93, and are respectively located between two adjacent support arms of the M-shaped support 2, are adjacent to the corresponding support arms, and are located outside the rotating seat 91.

[0012] The lifting fine-tuning structure 4 in the embodiment of the utility model includes a sleeve 41 arranged in the front-to-back direction, a locking nut 42 on the rotating shaft 92, and two fine-tuning units on the upper and lower sides of the sleeve 41. The sleeve 41 is located at the rear side of the lifting rod 6; the rear part of the rotating shaft 92 is a screw structure, which passes through the sleeve 41 backward; the locking nut 42 is against the rear side of the sleeve 41, and is arranged on the screw structure; the fine-tuning unit includes a screw fixing plate 43 arranged in the left-right direction, a screw 44 arranged vertically, and a fine-tuning unit on the screw 44. Adjusting nut 45, the screw fixing plate 43 is fixed on the rear side of the lifting rod 6 and is provided with a through hole for the screw 44 to pass through, and the two screw fixing plates 43 are respectively located above and below the upper strip hole 12; the end of the screw 44 close to the sleeve 41 is fixed to the corresponding upper or lower side of the sleeve 41, and the end away from the sleeve 41 passes through the screw fixing plate 43 and is provided with a fine-tuning nut 45; the fine-tuning nut 45 is located on the side of the screw fixing plate 43 away from the sleeve 41; the clamp 9 can be rotated by loosening the locking nut 42.

[0013] Among them, the lifting and coarse adjustment structure 7 in the embodiment of the utility model includes a rack 71 arranged at the lower part of the lifting rod 6, two support plates 72 arranged side by side on the left and right, a hand wheel 73 arranged along the left and right directions, and a gear 74 coaxially arranged on the driving shaft of the hand wheel 73. The two support plates 72 are respectively located at the left and right ends of the front side of the vertical pole 5 and are both arranged along the front and rear directions. The rack 71 is vertically arranged on the front side of the lifting rod 6, and the driving shaft of the hand wheel 73 is rotatably arranged on the two support plates 72; the gear 74 is located between the two support plates 72, which is located on the front side of the rack 71 and is meshed with the rack 71.

[0014] Among them, the locking structure 8 in the embodiment of the utility model includes a plurality of fixing bolts 81 arranged side by side up and down, and the upper part of the vertical pole 5 is provided with a plurality of locking holes cooperating with the fixing bolts 81, and the plurality of locking holes are arranged side by side up and down; the fixing bolts 81 are arranged along the front and back directions, and pass through the lower strip hole 13 and the locking hole, which fixes the lifting rod 6 on the vertical pole 5.

[0015] The beneficial effects brought about by the technical solution provided by the embodiment of the utility model are as follows: the embodiment of the utility model provides an auxiliary tooling for installing the M-shaped support of the tower, which has the advantages of simple structure, simple operation, reduced labor intensity, reduced installation time (while reducing the occupancy of forklifts), high versatility (suitable for installation at various heights and positions, and the M-shaped support can be fixed by clamping to adapt to M-shaped supports of various sizes) and high safety (the M-shaped support will not fall off during installation). BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an auxiliary tooling for installing a M-shaped support of a tower in an embodiment of the utility model;

[0017] Figure 2 It is a side view of an auxiliary tooling for installing a M-shaped support of a tower in an embodiment of the utility model;

[0018] Figure 3 yes Figure 1 A partial enlarged view of the middle fixture;

[0019] Figure 4 yes Figure 2 A partial enlarged view of the middle fixture and the lifting fine-tuning structure;

[0020] Figure 5 It is a structural schematic diagram of the lifting and lowering coarse adjustment structure;

[0021] Figure 6 It is a front view of the lifting and coarse adjustment structure;

[0022] Figure 7 It is a structural diagram of the lifting rod.

[0023] In the figure: 1 pulley, 2 M-shaped support, 3 base, 4 lifting fine adjustment structure, 5 vertical pole, 6 lifting rod, 7 lifting coarse adjustment structure, 8 locking structure, 9 clamp, 10 tower, 11 reinforcement beam, 12 upper strip hole, 13 lower strip hole;

[0024] 41 shaft sleeve, 42 locking nut, 43 screw fixing plate, 44 screw, 45 fine-adjusting nut;

[0025] 71 rack, 72 support plate, 73 hand wheel, 74 gear;

[0026] 81 fixing bolts;

[0027] 91 rotating seat, 92 rotating shaft, 93 fixing plate, 94 clamping plate, 95 clamping bolt. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] In this patent, the tower 10 is defined to be arranged in the front-to-back direction; the M-shaped support 2 is fixed at the front and rear ends of the tower 10. Figure 1-7Embodiment 1 provides an auxiliary tooling for installing a cross-shaped support of a tower, including a base 3, a plurality of pulleys 1 on the lower side of the base 3, a vertical pole 5 on the upper side of the base 3, a lifting rod 6 on the upper part of the vertical pole 5, a lifting coarse adjustment structure 7 between the lower part of the lifting rod 6 and the vertical pole 5, a locking structure 8 between the middle part of the lifting rod 6 and the vertical pole 5, a clamp 9 on the upper part of the lifting rod 6 and used to clamp the cross-shaped support 2, and a lifting fine adjustment structure 4 between the clamp 9 and the lifting rod 6. The base 3 can be moved as needed, the lifting coarse adjustment structure 7 is used to roughly adjust the height of the clamp 9, the lifting fine adjustment structure 4 is used to finely adjust the height of the clamp 9, the locking structure 8 is used to lock after coarse adjustment, and the clamp 9 is used to fix the cross-shaped support 2. In this patent, the cross-shaped support 2 is coaxially arranged with the axis of the tower 10 by means of the lifting coarse adjustment structure 7, the locking structure 8 and the lifting fine adjustment structure 4, and the fixing hole on the cross-shaped support 2 corresponds to the flange hole on the tower by rotating the clamp 9. After the installation of the M-shaped support 2 is completed, the auxiliary tooling of the present patent is separated from the M-shaped support 2.

[0031] The base 3 is a rectangular frame structure arranged in the front-to-back direction. The upright pole 5 is fixed in the middle of the base 3, and a reinforcing beam 11 (specifically a channel steel) is arranged between the left and right sides and the rear side corresponding to the base 3. The reinforcing beam 11 is arranged obliquely away from the upright pole 5 from top to bottom. Specifically, the rear reinforcing beam 11 is arranged obliquely backward from top to bottom. There are four pulleys 1, all of which are universal wheels. The four pulleys 1 are arranged in a rectangular shape and are respectively arranged at the four corners of the base 3.

[0032] Among them, the vertical pole 5 and the lifting rod 6 are both arranged vertically. The vertical pole 5 is a channel steel open forward. The lifting rod 6 is arranged on the vertical pole 5 so as to be adjustable up and down, and is locked on the vertical pole 5 by the locking structure 8. It is a rectangular bar matched with the channel steel, and is located in the notch of the vertical pole 5. The upper part and the middle part of the lifting rod are respectively provided with an upper strip hole 12 (matched with the lifting fine-tuning structure 4) and a lower strip hole 13 (matched with the locking structure 8) in the vertical direction.

[0033] Among them, see Figure 1-6In the embodiment of the utility model, the center of the cross-shaped support 2 is detachably arranged on the clamp 9. The clamp 9 is located at the front side of the lifting rod 6, and it can be adjusted up and down on the lifting rod 6, and it can rotate around the center of the cross-shaped support 2. Specifically, the clamp 9 includes a rotating seat 91, a rotating shaft 92, a fixing plate 93, a clamping plate 94 and eight clamping bolts 95. The rotating seat 91 is located at the front side of the lifting rod 6, which is a circular cover open to the front, and is arranged along the front-back direction. The rotating shaft 92 is arranged along the front-back direction, and it is coaxially arranged with the rotating seat 91, and it passes through the upper strip hole 12 backward, and its rear part is rotatably arranged on the lifting fine-tuning structure 4 (specifically in the shaft sleeve 41), and it is coaxially arranged with the cross-shaped support 2. The clamping plate 94 and the fixing plate 93 are both circular plates, which are coaxially arranged with the rotating shaft 92, and are respectively located at the front and rear sides of the cross-shaped support 2. The fixing plate 93 is fixed to the front side of the rotating seat 91, and its diameter is larger than that of the rotating seat 91, and it contacts the rear side of the cross-shaped support 2. The clamping plate 94 is pressed against the front side of the cross-shaped support 2. The clamping bolts 95 are arranged in the front-to-back direction, and their front and rear ends are respectively fixed (fixed by nuts) on the clamping plate 94 and the fixing plate 93. Eight clamping bolts 95 are evenly distributed around the center of the fixing plate 93, and are respectively located between two adjacent support arms of the cross-shaped support 2 (having eight arms), adjacent to the corresponding support arms, and located outside the rotating seat 91. By removing the clamping bolts 95, the clamping plate 94 can be removed, and then the cross-shaped support 2 can be removed.

[0034] Among them, see Figure 1-6 The lifting fine-tuning structure 4 in the embodiment of the utility model includes a sleeve 41 arranged in the front-to-back direction, a locking nut 42 (specifically, two locking nuts 42 are arranged side by side in the front-to-back direction) on the rotating shaft 92, and two fine-tuning units on the upper and lower sides of the sleeve 41, etc. The sleeve 41 is located at the rear side of the lifting rod 6. The rear part of the rotating shaft 92 is a screw structure, which passes through the sleeve 41 backward. The locking nut 42 is against the rear side of the sleeve 41, which is arranged on the screw structure. The two fine-tuning units are relatively arranged on the upper and lower sides of the sleeve 41. The fine-tuning unit includes a screw fixing plate 43 arranged in the left-right direction, a screw 44 arranged vertically, and a fine-tuning nut 45 on the screw 44, etc. The screw fixing plate 43 is fixed on the rear side of the lifting rod 6, and is provided with a through hole (specifically, a round hole slightly larger than the screw 44) for the screw 44 to pass through, which is specifically a rectangular plate. The two screw fixing plates 43 are respectively located above and below the upper strip hole 12. The end of the screw 44 close to the sleeve 41 is fixed to the corresponding upper or lower side of the sleeve 41, and the end away from the sleeve 41 passes through the screw fixing plate 43 and is provided with a fine-adjustment nut 45. The fine-adjustment nut 45 is located on the side of the screw fixing plate 43 away from the sleeve 41; the clamp 9 can be rotated and adjusted up and down by loosening the locking nut 42.

[0035] Among them, see Figure 1-6The lifting and lowering coarse adjustment structure 7 in the embodiment of the utility model includes a rack 71 arranged at the lower part of the lifting rod 6, two support plates 72 arranged side by side on the left and right, a hand wheel 73 arranged along the left and right directions, and a gear 74 coaxially arranged on the driving shaft of the hand wheel 73. The two support plates 72 are respectively located at the left and right ends of the front side of the vertical rod 5 (specifically fixed on the two groove edges of the channel steel), and they are both arranged along the front and rear directions, and they are specifically semicircular plates. The rack 71 is vertically arranged on the front side of the lifting rod 6, and it is located below the lower strip hole 13. The driving shaft of the hand wheel 73 is rotatably arranged on the two support plates 72 (specifically through bearings). The gear 74 is located between the two support plates 72, which is located on the front side of the rack 71, and it is meshed with the rack 71. After removing the fixing bolt 81, the lifting rod 6 can be adjusted up and down by turning the hand wheel 73, thereby adjusting the lifting rod 6.

[0036] Among them, see Figure 1-6 The locking structure 8 in the embodiment of the utility model includes a plurality of (specifically two) fixing bolts 81 arranged side by side in the vertical direction, and a plurality of (specifically two) locking holes (specifically round holes, slightly larger than the fixing bolts 81) are arranged on the upper part of the vertical pole 5 to match the fixing bolts 81. The plurality of locking holes are arranged side by side in the vertical direction. The fixing bolts 81 are arranged in the front-back direction, and pass through the lower strip hole 13 and the locking hole, and fix the lifting rod 6 (specifically locked by a nut) on the vertical pole 5.

[0037] Example 2

[0038] See also Figure 6 Embodiment 2 provides an auxiliary tooling for installing a M-shaped support of a tower, and its structure is basically the same as that of Embodiment 1, except that: the diameters of the fixed plate 93 and the clamping plate 94 in this embodiment are both 600 mm, and the diameters of the rotating seat 91 are both 400 mm. The length of the base 3 in the front-to-back direction is 2500 mm, and its width in the left-to-right direction is 3000 mm. The length of the vertical pole 5 is 2500 mm, the length of the lifting rod 6 is 2500 mm, and the length of the rack 71 is 1000 mm. The length of the lower strip hole 13 is 900 mm, and the width is 20 mm. The length of the upper strip hole 12 is 250 mm, and the width is 50 mm.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An auxiliary tooling for installing a tower tube's M-shaped support, characterized in that: The invention comprises a base (3), a plurality of pulleys (1) on the lower side of the base (3), a vertical pole (5) on the upper side of the base (3), a lifting rod (6) on the upper part of the vertical pole (5), a lifting coarse adjustment structure (7) between the lower part of the lifting rod (6) and the vertical pole (5), a locking structure (8) between the middle part of the lifting rod (6) and the vertical pole (5), a clamp (9) on the upper part of the lifting rod (6) and used for clamping a cross-shaped support (2), and a lifting fine adjustment structure (4) between the clamp (9) and the lifting rod (6); the vertical pole (5) and the lifting rod (6) are both arranged vertically, the center of the cross-shaped support (2) is detachably arranged on the clamp (9), the lifting rod (6) is arranged on the vertical pole (5) in a manner that it can be adjusted up and down, and is locked on the vertical pole (5) by the locking structure (8); the clamp (9) is located on the front side of the lifting rod (6), is arranged on the lifting rod (6) in a manner that it can be adjusted up and down, and can rotate around the center of the cross-shaped support (2).

2. The auxiliary tooling for installing the M-shaped support of the tower according to claim 1, characterized in that: The base (3) is a rectangular frame structure arranged in the front-to-back direction; the upright pole (5) is fixed in the middle of the base (3), and reinforcement beams (11) are arranged between the left and right sides and the rear side thereof and the corresponding sides of the base (3); the reinforcement beam (11) is arranged obliquely away from the upright pole (5) from top to bottom.

3. The auxiliary tooling for installing the M-shaped support of the tower according to claim 2, characterized in that: The number of the pulleys (1) is four and all of them are universal wheels. The four pulleys (1) are arranged in a rectangular shape and are respectively arranged at the four corners of the base (3).

4. The auxiliary tooling for installing the M-shaped support of the tower according to claim 1, characterized in that: The vertical pole (5) is a channel steel open forward; the lifting rod (6) is a rectangular bar matched with the channel steel and is located in the notch of the vertical pole (5), and its upper part and middle part are respectively provided with an upper strip hole (12) and a lower strip hole (13) in the vertical direction.

5. The auxiliary tooling for installing the M-shaped support of the tower according to claim 4, characterized in that: The clamp (9) comprises a rotating seat (91), a rotating shaft (92), a fixing plate (93), a clamping plate (94) and eight clamping bolts (95); the rotating seat (91) is located at the front side of the lifting rod (6) and is a circular cover open to the front; the rotating shaft (92) is arranged in the front-back direction, and is coaxially arranged with the rotating seat (91), and passes through the upper strip hole (12) backward, and its rear part is rotatably arranged on the lifting fine-tuning structure (4), and is coaxially arranged with the M-shaped support (2); the clamping plate (94) and the fixing plate (93) are both circular plates, and are both connected to the rotating shaft (92). The shaft (92) is coaxially arranged and is respectively located on the front and rear sides of the cross-shaped support (2); the fixing plate (93) is fixed on the front side of the rotating seat (91) and its diameter is larger than the diameter of the rotating seat (91); the clamping bolts (95) are arranged in the front and rear directions and their front and rear ends are respectively fixed on the clamping plate (94) and the fixing plate (93); eight clamping bolts (95) are evenly distributed around the center of the fixing plate (93), and are respectively located between two adjacent support arms of the cross-shaped support (2), are adjacent to the corresponding support arms, and are located outside the rotating seat (91).

6. The auxiliary tooling for installing the M-shaped support of the tower according to claim 5, characterized in that: The lifting fine-tuning structure (4) comprises a shaft sleeve (41) arranged in the front-back direction, a locking nut (42) on the rotating shaft (92) and two fine-tuning units on the upper and lower sides of the shaft sleeve (41), wherein the shaft sleeve (41) is located at the rear side of the lifting rod (6); the rear part of the rotating shaft (92) is a screw structure, which passes through the shaft sleeve (41) backward; the locking nut (42) abuts against the rear side of the shaft sleeve (41) and is arranged on the screw structure; the fine-tuning unit comprises a screw fixing plate (43) arranged in the left-right direction, a screw (44) arranged vertically and a fine-tuning nut (45) on the screw (44), The screw fixing plate (43) is fixed to the rear side of the lifting rod (6) and is provided with a through hole for the screw (44) to pass through. The two screw fixing plates (43) are respectively located above and below the upper strip hole (12); one end of the screw (44) close to the shaft sleeve (41) is fixed to the corresponding upper side or lower side of the shaft sleeve (41), and the end away from the shaft sleeve (41) passes through the screw fixing plate (43) and is provided with a fine-tuning nut (45); the fine-tuning nut (45) is located on the side of the screw fixing plate (43) away from the shaft sleeve (41); the clamp (9) can be rotated by loosening the locking nut (42).

7. The auxiliary tooling for installing the M-shaped support of the tower according to claim 4, characterized in that: The lifting and coarse adjustment structure (7) comprises a rack (71) arranged at the bottom of the lifting rod (6), two support plates (72) arranged side by side on the left and right, a hand wheel (73) arranged in the left and right directions, and a gear (74) coaxially arranged on the driving shaft of the hand wheel (73); the two support plates (72) are respectively located at the left and right ends of the front side of the vertical rod (5) and are both arranged in the front and rear directions; the rack (71) is vertically arranged on the front side of the lifting rod (6); the driving shaft of the hand wheel (73) is rotatably arranged on the two support plates (72); the gear (74) is located between the two support plates (72), is located in front of the rack (71), and is meshed with the rack (71).

8. The auxiliary tooling for installing the M-shaped support of the tower according to claim 4, characterized in that: The locking structure (8) includes a plurality of fixing bolts (81) arranged side by side in the upper and lower parts, and a plurality of locking holes cooperating with the fixing bolts (81) are provided on the upper part of the vertical pole (5), and the plurality of locking holes are arranged side by side in the upper and lower parts; the fixing bolts (81) are arranged in the front-to-back direction, and pass through the lower strip hole (13) and the locking hole, so as to fix the lifting rod (6) on the vertical pole (5).

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