Supporting device for installing gas-insulated metal-enclosed power transmission line in vertical shaft

Abstract

The invention belongs to the technical field of vertical shaft power transmission line supporting devices, and particularly relates to a supporting device for mounting a gas-insulated metal-enclosed power transmission line in a vertical shaft. The clamping assembly comprises a positioning shell, a positioning ring fixedly connected to the surface of the positioning shell, a clamping block used for clamping and supporting, a pressing rod, a sliding hole, a linkage rod, a linkage shell, a positioning shaft, a sliding block, a positioning block, a through groove, a handle, an arc-shaped block, a spring A, a rotating hole, a rotating shaft, a gear, a lock hole, an inserting block, a spring B, a linkage plate and a limiting hole. The clamp has the advantages that the clamp can adapt to expansion caused by heat and contraction caused by cold of the GIL pipeline, so that proper clamping force can be applied to the GIL pipeline, and the surface of the GIL pipeline is prevented from being scratched when the GIL pipeline is clamped and supported.

Description

Technical Field

[0001] The invention belongs to the technical field of shaft transmission line support devices, and in particular relates to a support device for a gas-insulated metal-enclosed transmission line installed in a shaft. Background Art

[0002] The GIL system is a high-voltage, high-current power transmission equipment that uses gas insulation and coaxial arrangement of the casing and conductor. The gas-insulated metal-enclosed transmission line is referred to as GIL. Since it uses gas with excellent insulation properties as the insulating medium, the equipment size and layout spacing are greatly reduced, which can minimize the floor space and space required for equipment layout, as well as the corresponding civil engineering work. In view of the above advantages, the GIL system is widely used in the field of large-scale hydropower projects. Large-scale hydropower projects mostly adopt the layout of underground powerhouses. As a high-voltage connecting line, GIL often needs to be arranged in a vertical shaft connecting the underground powerhouse and the ground switch station or outgoing line station, and the height difference is often as high as hundreds of meters. GIL is a rigid device. When installed vertically, the weight of the equipment itself, installation errors, thermal expansion and contraction and other factors will all produce large stresses. Reasonable design of the installation and fixing method of GIL in a high-drop vertical shaft with a small space can release the stress caused by factors such as thermal expansion and contraction, and avoid GIL equipment failures caused by stress problems;

[0003] However, GIL is a rigid device. When installed vertically, factors such as the weight of the device itself, installation errors, and thermal expansion and contraction will all produce large stresses. The existing fixed support methods all use bolts and iron rings to fix it, which will not only scratch the surface of the GIL pipeline, but also lack the ability to properly clamp it according to thermal expansion and contraction due to its own rigidity.

[0004] In order to solve the above problems, the present application proposes a supporting device for installing a gas-insulated metal-enclosed transmission line in a vertical shaft. Summary of the invention

[0005] To solve the problems raised in the above background technology, the present invention provides a support device for installing a gas-insulated metal-enclosed transmission line in a shaft, which can adapt to the thermal expansion and contraction of the GIL pipeline, so that it can be clamped with appropriate force, and also has the characteristics of preventing scratches on its surface when it is clamped and supported.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a support device for installing a gas-insulated metal-enclosed transmission line in a shaft, comprising a clamping assembly;

[0007] The clamping assembly includes a positioning shell and a positioning ring fixedly connected to the surface of the positioning shell and a clamping block for clamping support, a pressure rod, a sliding hole, a linkage rod, a linkage shell, a positioning shaft, a slider, a positioning block, a through groove, a handle, an arc block, a spring A, a rotating hole, a rotating shaft, a gear, a lock hole, an insert block, a spring B, a linkage plate and a limit hole;

[0008] A fault-tolerant component is arranged inside the clamping block, and the fault-tolerant component includes a fixing groove opened inside the clamping block and a limit block, a spring C and a rubber strip for adjustment;

[0009] A friction assembly is arranged on one side of the positioning shell, and the friction assembly includes a power transmission line pipeline and a limiting cone and a rubber pad for scratch prevention.

[0010] The surface of the positioning shell is evenly fixedly connected with a plurality of positioning rings, each of which is provided with a bolt inside the positioning ring, and two linkage shells are symmetrically arranged inside the positioning shell, and a positioning shaft is fixedly connected to the surface of each linkage shell, and the linkage shell is rotatably connected to the positioning shell through the positioning shaft, and two clamping blocks are symmetrically arranged on one side of the positioning shell, and the two clamping blocks are fixedly connected to the corresponding linkage shell, and a slider is slidably connected to the inside of the linkage shell, and the end of the slider away from the linkage shell is fixedly connected to the positioning block, and each positioning block is provided with a tooth groove inside, and a linkage rod is provided inside the positioning shell, and the linkage rod passes through the positioning block through the tooth groove, and a sliding hole is provided inside the positioning shell, and a pressure rod is provided inside the sliding hole, and the pressure rod is slidably connected to the positioning shell through the sliding hole, and the linkage rod and the pressure rod are slidably connected.

[0011] The linkage rod passes through the two positioning blocks, and the two positioning blocks are arranged in a staggered manner.

[0012] A through groove is provided inside the positioning shell, and the end of the linkage rod away from the pressure rod passes through the positioning shell through the through groove. A rotating hole is provided at the end of the linkage rod away from the pressure rod, and a rotating shaft is arranged inside the rotating hole. Both ends of the rotating shaft are fixedly connected with handles, and the surface of the handle is fixedly connected with an arc block. The surface of the linkage rod is fixedly connected with a gear, and the gear is inserted inside the tooth groove. The gear is meshed with the positioning block through the tooth groove.

[0013] A spring A is wound around the surface of the linkage rod, one end of the spring A is fixedly connected to the linkage rod, and one end of the spring A away from the linkage rod is in contact with the inner wall of the positioning shell.

[0014] A locking hole is provided inside the linkage rod, an inserting block is provided inside the locking hole, the inserting block is slidably connected to the linkage rod through the locking hole, and the inserting block is fixedly connected to the arc block.

[0015] A limiting hole is provided inside the positioning shell, a linkage plate is provided inside the limiting hole, the linkage plate is slidably connected to the positioning shell through the limiting hole, a spring B is provided inside the limiting hole, and both ends of the spring B are fixedly connected to the positioning shell and the linkage plate respectively.

[0016] Two fixing grooves are symmetrically provided inside each of the clamping blocks, a limiting block is arranged inside each of the fixing grooves, the limiting block is slidably connected to the clamping block through the fixing grooves, a number of springs C are evenly arranged inside the fixing grooves, and the two ends of each of the springs C are fixedly connected to the limiting block and the clamping block respectively.

[0017] A plurality of rubber strips are evenly and fixedly connected to adjacent surfaces of the two clamping blocks.

[0018] A power transmission line pipeline is arranged between the two clamping blocks, and a plurality of limiting cones are evenly and fixedly connected to the surface of the power transmission line pipeline. A rubber pad is wrapped around the surface of the power transmission line pipeline, and a plurality of positioning holes are opened on a side of the rubber pad facing the power transmission line pipeline at positions corresponding to the limiting cones, and the limiting cones are inserted inside the positioning holes.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: a clamping assembly is added to the present application, and the cooperation of the positioning block and the pressure rod therein can be used to place the power transmission line pipeline between the two clamping blocks. When the power transmission line pipeline is placed between the two clamping blocks, the pressure rod will be squeezed, and the pressure rod will slide inside the sliding hole, thereby driving the linkage rod to move inside the positioning shell. The movement of the linkage rod will drive the slider to slide inside the linkage shell through the positioning block, and the linkage shell will rotate inside the positioning shell with the positioning axis as the axis, so that the two clamping blocks rotate with the positioning axis as the axis, so that the two clamping blocks are brought closer to each other until they fit together with the rubber pad until the power transmission line pipeline is fixed and clamped. A fault-tolerant assembly is also added, and the cooperation of the fixing groove and the limit block therein can be used. When it is necessary to clamp a thinner power transmission line pipeline, When the two clamping blocks are close to each other, the limit block will move inside the fixed groove, and the spring C will be compressed, so that the transmission line pipelines with different diameters can be clamped. When the two clamping blocks clamp the transmission line pipeline, the rubber strip will fit with the rubber pad. The friction force is increased by the characteristics of the rubber strip and the rubber pad materials, so that when the transmission line pipeline is clamped, the transmission line pipeline can be properly clamped when it expands and contracts due to thermal expansion and contraction through the characteristics of the rubber strip and the rubber pad materials. At the same time, a friction component is added, and the rubber pad and the limit cone can be used to wrap the rubber pad around the surface of the transmission line pipeline, and the limit cone is inserted into the inside of the positioning hole to limit the rubber pad, thereby protecting the surface of the transmission line pipeline and preventing scratches when clamping it. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a structural schematic diagram of a horizontal cross section of a clamping block in the present invention;

[0023] Figure 3 It is a structural schematic diagram of a vertical cross section of a positioning shell in the present invention;

[0024] Figure 4 It is a structural schematic diagram of the positioning block and the linkage rod in the present invention;

[0025] Figure 5 It is a structural schematic diagram of a vertical cross section of a positioning block in the present invention;

[0026] Figure 6 It is a structural schematic diagram of a vertical cross section of a linkage rod in the present invention;

[0027] Figure 7 It is a structural schematic diagram of a vertical cross section of the rubber pad in the present invention;

[0028] Figure 8 For the present invention Figure 7 The enlarged view of point A in the middle;

[0029] In the figure:

[0030] 1. Clamping assembly; 11. Positioning shell; 12. Positioning ring; 13. Clamping block; 14. Pressure rod; 15. Sliding hole; 16. Linkage rod; 17. Linkage shell; 18. Positioning shaft; 19. Sliding block; 110. Positioning block; 111. Through groove; 112. Handle; 113. Arc block; 114. Spring A; 115. Rotating hole; 116. Rotating shaft; 117. Gear; 118. Locking hole; 119. Insert block; 120. Spring B; 121. Linkage plate; 122. Limiting hole;

[0031] 2. Fault-tolerant component; 21. Fixing slot; 22. Limit block; 23. Spring C; 24. Rubber strip;

[0032] 3. Friction assembly; 31. Rubber pad; 32. Limiting cone; 33. Transmission line pipeline. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] like Figures 1 to 8 As shown;

[0036] A support device for shaft-mounted gas-insulated metal-enclosed transmission lines, comprising a clamping assembly 1;

[0037] The clamping assembly 1 includes a positioning shell 11, a positioning ring 12 fixedly connected to the surface of the positioning shell 11, a clamping block 13 for clamping support, a pressure rod 14, a sliding hole 15, a linkage rod 16, a linkage shell 17, a positioning shaft 18, a slider 19, a positioning block 110, a through groove 111, a handle 112, an arc block 113, a spring A114, a rotating hole 115, a rotating shaft 116, a gear 117, a locking hole 118, an insert block 119, a spring B120, a linkage plate 121 and a limiting hole 122;

[0038] A fault-tolerant component 2 is disposed inside the clamp block 13. The fault-tolerant component 2 includes a fixing groove 21 provided inside the clamp block 13, and a limit block 22, a spring C23 and a rubber strip 24 for adjustment.

[0039] A friction assembly 3 is disposed on one side of the positioning shell 11 . The friction assembly 3 includes a power transmission line pipe 33 , a limiting cone 32 and a rubber pad 31 for preventing scratches.

[0040] A plurality of positioning rings 12 are evenly and fixedly connected to the surface of the positioning shell 11, and a bolt is arranged inside each positioning ring 12. Two linkage shells 17 are symmetrically arranged inside the positioning shell 11, and a positioning shaft 18 is fixedly connected to the surface of each linkage shell 17. The linkage shell 17 is rotatably connected to the positioning shell 11 through the positioning shaft 18. Two clamping blocks 13 are symmetrically arranged on one side of the positioning shell 11, and the two clamping blocks 13 are fixedly connected to the corresponding linkage shells 17. A slider 19 is slidably connected to the inside of the linkage shell 17, and a positioning block 110 is fixedly connected to one end of the slider 19 away from the linkage shell 17. A tooth groove is provided inside each positioning block 110, and a linkage rod 16 is provided inside the positioning shell 11, and the linkage rod 16 passes through the positioning block 110 through the tooth groove. A sliding hole 15 is provided inside the positioning shell 11, and a pressure rod 14 is provided inside the sliding hole 15. The pressure rod 14 is slidably connected to the positioning shell 11 through the sliding hole 15, and the linkage rod 16 is slidably connected to the pressure rod 14.

[0041] The linkage rod 16 passes through the two positioning blocks 110 , and the two positioning blocks 110 are arranged in a staggered manner.

[0042] A through groove 111 is provided inside the positioning shell 11, and the end of the linkage rod 16 away from the pressure rod 14 passes through the positioning shell 11 through the through groove 111. A rotating hole 115 is provided at the end of the linkage rod 16 away from the pressure rod 14, and a rotating shaft 116 is arranged inside the rotating hole 115. Both ends of the rotating shaft 116 are fixedly connected to handles 112, and the surface of the handle 112 is fixedly connected to an arc block 113. The surface of the linkage rod 16 is fixedly connected to a gear 117, which is inserted into the tooth groove, and the gear 117 is meshed with the positioning block 110 through the tooth groove.

[0043] A spring A114 is wound around the surface of the linkage rod 16 , one end of the spring A114 is fixedly connected to the linkage rod 16 , and one end of the spring A114 away from the linkage rod 16 is in contact with the inner wall of the positioning shell 11 .

[0044] A locking hole 118 is provided inside the linkage rod 16 , and an insert block 119 is provided inside the locking hole 118 . The insert block 119 is slidably connected to the linkage rod 16 through the locking hole 118 , and the insert block 119 is fixedly connected to the arc block 113 .

[0045] A limiting hole 122 is provided inside the positioning shell 11, and a linkage plate 121 is arranged inside the limiting hole 122. The linkage plate 121 is slidably connected to the positioning shell 11 through the limiting hole 122. A spring B120 is arranged inside the limiting hole 122, and both ends of the spring B120 are fixedly connected to the positioning shell 11 and the linkage plate 121 respectively.

[0046] Two fixing grooves 21 are symmetrically provided inside each clamping block 13, and a limit block 22 is arranged inside each fixing groove 21. The limit block 22 is slidably connected with the clamping block 13 through the fixing groove 21. A plurality of springs C23 are evenly arranged inside the fixing groove 21, and the two ends of each spring C23 are fixedly connected with the limit block 22 and the clamping block 13 respectively.

[0047] A plurality of rubber strips 24 are evenly and fixedly connected to adjacent surfaces of the two clamping blocks 13 .

[0048] A power transmission line pipeline 33 is arranged between the two clamping blocks 13, and a plurality of limiting cones 32 are evenly and fixedly connected to the surface of the power transmission line pipeline 33. A rubber pad 31 is wrapped around the surface of the power transmission line pipeline 33. A plurality of positioning holes are opened on one side of the rubber pad 31 facing the power transmission line pipeline 33 at positions corresponding to the limiting cones 32, and the limiting cones 32 are inserted into the inside of the positioning holes.

[0049] The working principle and use process of the present invention are as follows: when it is necessary to clamp and support the transmission line pipeline 33, the rubber pad 31 is wrapped around the surface of the transmission line pipeline 33, and the limiting cone 32 is inserted into the interior of the positioning hole to limit the rubber pad 31, thereby protecting the surface of the transmission line pipeline 33 and preventing scratches when clamping it. Then, the positioning shell 11 is fitted to the inner wall of the shaft, and the positioning shell 11 is fixed by inserting the bolt into the positioning ring 12. Then, the transmission line pipeline 33 is placed between the two clamping blocks 13. When the transmission line pipeline 33 is placed between the two clamping blocks 13, the pressure rod 14 will be squeezed, and the pressure rod 14 will slide inside the sliding hole 15. , thereby driving the linkage rod 16 to move inside the positioning shell 11. The movement of the linkage rod 16 will drive the slider 19 to slide inside the linkage shell 17 through the positioning block 110. The linkage shell 17 will rotate inside the positioning shell 11 with the positioning shaft 18 as the axis, so that the two clamping blocks 13 rotate with the positioning shaft 18 as the axis, so that the two clamping blocks 13 are close to each other until they are in contact with the rubber pad 31, until the transmission line pipeline 33 is fixedly clamped. When the two clamping blocks 13 clamp the transmission line pipeline 33, the rubber strip 24 will be in contact with the rubber pad 31. The characteristics of the materials of the rubber strip 24 and the rubber pad 31 increase the friction force, so that the transmission line pipeline 33 is clamped. When holding, the transmission line pipeline 33 can be properly clamped when it expands and contracts due to the characteristics of the rubber strip 24 and the rubber pad 31. When clamping the transmission line pipeline 33, force is applied to the handle 112 to make the handle 112 rotate inside the rotating shaft 116 with the rotating hole 115 as the axis until the arc block 113 and the positioning shell 11 fit each other. Due to the characteristics of the shape of the arc block 113, the linkage rod 16 will be lifted upward. When the linkage rod 16 moves, the gear 117 will be inserted into the tooth groove. Through the cooperation of the gear 117 and the tooth groove, the positioning block 110 is limited, and the positioning of the two clamping blocks 13 is realized. When the arc block 113 fits the surface of the positioning shell 11, the insertion Block 119 will be inserted into the inside of the lock hole 118 to limit the linkage rod 16. When the power transmission line pipeline 33 needs to be disassembled, the handle 112 is rotated in the opposite direction to pull the insert block 119 out of the lock hole 118, and the spring A114 will push the gear 117 back to its original position due to elastic potential energy, and then the spring B120 will push the pressure rod 14 back to its original position through the linkage plate 121 due to elastic potential energy, so that the power transmission line pipeline 33 can be removed. When it is necessary to clamp a thinner power transmission line pipeline 33, the two clamping blocks 13 are close to each other, the limit block 22 will move inside the fixing groove 21, and the spring C23 will be compressed, so that the power transmission line pipelines 33 of different diameters can be clamped.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A support device for a gas-insulated metal-enclosed transmission line installed in a shaft, characterized in that: It comprises a clamping assembly (1); The clamping assembly (1) comprises a positioning shell (11), a positioning ring (12) fixedly connected to the surface of the positioning shell (11), a clamping block (13) for clamping support, a pressure rod (14), a sliding hole (15), a linkage rod (16), a linkage shell (17), a positioning shaft (18), a sliding block (19), a positioning block (110), a through groove (111), a handle (112), an arc block (113), a spring A (114), a rotating hole (115), a rotating shaft (116), a gear (117), a locking hole (118), an insert block (119), a spring B (120), a linkage plate (121) and a limiting hole (122); A fault-tolerant component (2) is arranged inside the clamping block (13), and the fault-tolerant component (2) comprises a fixing groove (21) provided inside the clamping block (13), a limit block (22) for adjustment, a spring C (23) and a rubber strip (24); A friction assembly (3) is provided on one side of the positioning shell (11), and the friction assembly (3) comprises a power transmission line pipeline (33) and a limiting cone (32) and a rubber pad (31) for preventing scratches.

2. The supporting device for shaft-mounted gas-insulated metal-enclosed transmission lines according to claim 1, characterized in that: A plurality of positioning rings (12) are evenly and fixedly connected to the surface of the positioning shell (11), and a bolt is arranged inside each of the positioning rings (12). Two linkage shells (17) are symmetrically arranged inside the positioning shell (11), and a positioning shaft (18) is fixedly connected to the surface of each linkage shell (17). The linkage shell (17) is rotatably connected to the positioning shell (11) via the positioning shaft (18). Two clamping blocks (13) are symmetrically arranged on one side of the positioning shell (11), and the two clamping blocks (13) are fixedly connected to the corresponding linkage shell (17). The linkage shell (17) is slidably connected to the inside of the linkage shell (17). A block (19) is provided, one end of the slider (19) away from the linkage shell (17) is fixedly connected with a positioning block (110), a tooth groove is provided inside each of the positioning blocks (110), a linkage rod (16) is provided inside the positioning shell (11), the linkage rod (16) passes through the positioning block (110) through the tooth groove, a sliding hole (15) is provided inside the positioning shell (11), a pressure rod (14) is provided inside the sliding hole (15), the pressure rod (14) is slidably connected to the positioning shell (11) through the sliding hole (15), and the linkage rod (16) and the pressure rod (14) are slidably connected.

3. The supporting device for shaft-mounted gas-insulated metal-enclosed transmission lines according to claim 2, characterized in that: The linkage rod (16) passes through the two positioning blocks (110), and the two positioning blocks (110) are arranged in a staggered manner.

4. The supporting device for shaft-mounted gas-insulated metal-enclosed transmission lines according to claim 3, characterized in that: A through slot (111) is provided inside the positioning shell (11), and one end of the linkage rod (16) away from the pressure rod (14) passes through the positioning shell (11) through the through slot (111), and one end of the linkage rod (16) away from the pressure rod (14) is provided with a rotating hole (115), and a rotating shaft (116) is arranged inside the rotating hole (115), and both ends of the rotating shaft (116) are fixedly connected to handles (112), and the surface of the handle (112) is fixedly connected to an arc block (113), and the surface of the linkage rod (16) is fixedly connected to a gear (117), and the gear (117) is inserted inside the tooth groove, and the gear (117) is meshed with the positioning block (110) through the tooth groove.

5. The supporting device for shaft-mounted gas-insulated metal-enclosed transmission lines according to claim 4, characterized in that: A spring A (114) is wound around the surface of the linkage rod (16), one end of the spring A (114) is fixedly connected to the linkage rod (16), and one end of the spring A (114) away from the linkage rod (16) is in contact with the inner wall of the positioning shell (11).

6. The supporting device for shaft-mounted gas-insulated metal-enclosed transmission lines according to claim 5, characterized in that: A locking hole (118) is provided inside the linkage rod (16), and an insert block (119) is provided inside the locking hole (118). The insert block (119) is slidably connected to the linkage rod (16) through the locking hole (118), and the insert block (119) is fixedly connected to the arc block (113).

7. The supporting device for shaft-mounted gas-insulated metal-enclosed power transmission line according to claim 6, characterized in that: A limiting hole (122) is provided inside the positioning shell (11), a linkage plate (121) is provided inside the limiting hole (122), the linkage plate (121) is slidably connected to the positioning shell (11) through the limiting hole (122), a spring B (120) is provided inside the limiting hole (122), and two ends of the spring B (120) are respectively fixedly connected to the positioning shell (11) and the linkage plate (121).

8. The supporting device for shaft-mounted gas-insulated metal-enclosed power transmission line according to claim 7, characterized in that: Two fixing grooves (21) are symmetrically provided inside each clamping block (13), a limiting block (22) is arranged inside each fixing groove (21), the limiting block (22) is slidably connected to the clamping block (13) through the fixing groove (21), a plurality of springs C (23) are evenly arranged inside the fixing groove (21), and two ends of each spring C (23) are respectively fixedly connected to the limiting block (22) and the clamping block (13).

9. The supporting device for shaft-mounted gas-insulated metal-enclosed power transmission line according to claim 8, characterized in that: A plurality of rubber strips (24) are evenly and fixedly connected to adjacent surfaces of the two clamping blocks (13).

10. The supporting device for shaft-mounted gas-insulated metal-enclosed power transmission line according to claim 9, characterized in that: A power transmission line pipeline (33) is arranged between the two clamping blocks (13), a plurality of limiting cones (32) are evenly and fixedly connected to the surface of the power transmission line pipeline (33), a rubber pad (31) is wound around the surface of the power transmission line pipeline (33), a plurality of positioning holes are opened on one side of the rubber pad (31) facing the power transmission line pipeline (33) at positions corresponding to the limiting cones (32), and the limiting cones (32) are inserted inside the positioning holes.

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