Bamboo raft power propulsion equipment convenient to mount and dismount

Abstract

The utility model provides bamboo raft power propulsion equipment convenient to mount and dismount, which comprises a bamboo raft body and a propeller, a plurality of fixing rods are fixedly mounted on the bamboo raft body, and the propeller is detachably mounted on the fixing rods; the propeller comprises an equipment body, a base and a fixing mechanism, the equipment body is movably installed on the base, the fixing mechanism is arranged at the bottom of the base, and the fixing mechanism is detachably connected with the bamboo raft body; the fixing mechanism comprises a plurality of fixing piece sets, the fixing piece sets are evenly distributed at the bottom of the base, each fixing piece set comprises an arc-shaped block, a holding claw and an adjusting piece, the arc-shaped blocks are detachably installed at the bottom of the base, the holding claws are movably installed in the arc-shaped blocks, the holding claws are connected with the adjusting pieces, and the adjusting pieces are connected with the arc-shaped blocks. The adjusting pieces are used for controlling the holding claws and the bamboo raft body to be locked and fixed. Through the design, the propeller can be conveniently dismounted and mounted.

Description

Technical Field

[0001] The utility model relates to the technical field of propellers, in particular to a power propulsion device for a bamboo raft which is easy to install and disassemble. Background Art

[0002] Bamboo raft, also known as bamboo raft, is made of bundles of bamboos. It is a water transportation tool in mountainous areas and water towns with streams. Bamboo raft has a long history and has its own place in the history of ship development. Bamboo raft is made of real bamboo and thorny bamboo. Small raft uses 5 to 8 bamboos, large raft uses 11 to 16 bamboos. The general bamboo raft is about three meters long and several feet wide. The thick end of the bamboo is used as the raft bow, which is raised high, and the thin end is used as the raft tail, which is flat on the water surface.

[0003] In the prior art, bamboo rafts are mainly driven by manpower, and the speed of travel is slow. Controlling the bamboo raft requires high operating skills. Since the bamboo raft can only rely on manpower for both the round trip and the return trip, it takes a lot of time and energy to go upstream. In some places, the river is too fast, and the boatman needs to go into the water to pull the boat upstream, which is time-consuming and laborious. Since the structure of the bamboo raft is relatively simple and lacks supporting components, the existing auxiliary equipment such as the paddle motor cannot be used on the bamboo raft to drive the bamboo raft.

[0004] The utility model aims to provide a power propulsion device for a bamboo raft which is easy to install and disassemble, so as to solve the problems mentioned in the above background technology. Utility Model Content

[0005] To achieve the above object, the utility model provides a power propulsion device for a bamboo raft that is easy to install and disassemble, comprising a bamboo raft body and a propeller, wherein a plurality of fixing rods are fixedly installed on the bamboo raft body, and the propeller is detachably installed on the fixing rods;

[0006] The propeller comprises a device body, a base, and a fixing mechanism, wherein the device body is movably mounted on the base, the fixing mechanism is arranged at the bottom of the base, and the fixing mechanism is detachably connected to the bamboo raft body;

[0007] The fixing mechanism comprises a plurality of fixing member groups, and the plurality of fixing member groups are evenly distributed at the bottom of the base, and the fixing member groups comprise an arc block, a claw, and an adjusting member, wherein the arc block is detachably mounted at the bottom of the base, and the claw is movably mounted inside the arc block, and the claw is connected to the adjusting member, and the adjusting member is used to control the claw to be locked and fixed with the bamboo raft body;

[0008] An angle adjustment mechanism is also provided at the center of the base, and the angle adjustment mechanism is connected to the bottom of the device body.

[0009] As a further improvement of the present utility model, the adjusting member includes an adjusting handle, an adjusting rod, a driving gear 1 and a driving gear 2. A cover shell is fixedly installed on an outer wall of one side of the arc block. A bevel gear is provided inside the cover shell. The adjusting handle is fixedly connected to one end of the adjusting rod. The adjusting rod passes through the cover shell and is connected to a transmission member. The transmission member is connected to the driving gear 1 and the driving gear 2. The driving gear 1 and the driving gear 2 are connected to the claw. A locking member 1 is provided on the adjusting rod, and the locking member 1 is used to lock the adjusting rod for rotation.

[0010] As a further improvement of the present invention, the locking member comprises a fixed sleeve, a fixed clamping block, and a movable clamping block, the fixed clamping block being fixedly installed inside the fixed sleeve, the movable clamping block being movably installed at one end inside the fixed sleeve, the fixed clamping block and the movable clamping block being provided on opposite sides thereof with a groove matching the outer wall of the adjusting rod, the outer wall of the fixed sleeve being symmetrically provided with two through holes, the two through holes being connected with the grooves, the adjusting rod extending through the through holes on one side to the through holes on the other side, the outer wall of one end of the fixed sleeve being threadedly connected with a threaded sleeve cover, and the threaded sleeve cover being rotatably connected to the movable clamping block.

[0011] As a further improvement of the utility model, the claw comprises an arc-shaped rack 1 and an arc-shaped rack 2, the driving gear 1 and the driving gear 2 are respectively meshed with the arc-shaped rack 1 and the arc-shaped rack 2, and the arc-shaped rack 1 and the arc-shaped rack 2 are movably installed inside the arc-shaped block;

[0012] The transmission member includes a bevel gear, a driven wheel 1 and a driven wheel 2, the bevel gear is installed inside the cover shell, the driven wheel 1 and the driven wheel 2 are arranged opposite to each other and mesh with the two sides of the bevel gear respectively, the driven wheel 1 is fixedly connected to the adjusting rod, the end of the adjusting rod is fixedly connected to the driving gear 1, a hollow sleeve is sleeved on the outer wall of the adjusting rod, a fixing plate is fixedly installed on the outer wall of the arc block, the hollow sleeve is rotatably connected to the center of the fixing plate, and the two ends of the hollow sleeve are respectively connected to the driven wheel 2 and the driving wheel 2.

[0013] As a further improvement of the utility model, an arc-shaped through groove is opened inside the arc block, and the arc-shaped rack 1 and the arc-shaped rack 2 are movably installed side by side in the arc-shaped through groove, and the ends of the arc-shaped rack 1 and the arc-shaped rack 2 respectively pass through the two ends of the arc-shaped through groove and are tightly fixed to the fixing rod.

[0014] As a further improvement of the present utility model, an angle adjustment mechanism is provided at the top center of the base, and the angle adjustment mechanism is connected to the bottom of the equipment body. The angle adjustment mechanism includes an arc seat, and the bottom of the arc seat is rotatably connected to the base. A slider is slidably provided in the arc seat, and a fixed block is fixedly connected to the top of the slider, and the fixed block is fixedly connected to the bottom of the equipment body. The bottom of the slider is provided with an arc groove matching the arc seat, and a locking piece 2 is provided on the arc seat, and the locking piece 2 is used to lock the slider.

[0015] As a further improvement of the present invention, the second locking member includes a latch and a pin hole, the pin hole is provided on an outer wall of one side of the arc-shaped seat, one end of the latch is detachably connected to the pin hole, the other end of the latch is connected to the arc-shaped seat by a chain, and a plurality of limiting holes matching the latch are provided on the outer wall of the arc-shaped groove.

[0016] As a further improvement of the utility model, a threaded sleeve is fixedly installed on the top of the arc block, a threaded hole is provided on the base, a locking nut is threadedly connected to the threaded sleeve, and the locking nut passes through the threaded hole and is detachably connected to the threaded sleeve.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model is provided with a fixing mechanism, which clamps the arc block therein with the top surface of the fixing rod on the bamboo raft, and then rotates the adjusting rod on the adjusting handle so that the transmission gear 1 drives the bevel gear to rotate, and at the same time, the transmission gear 2 follows the rotation. When the transmission gear 1 and the transmission gear 2 rotate, the driving gear 1 and the driving gear 2 connected with the adjusting rod and the hollow sleeve follow the rotation. At this time, the arc rack 1 and the arc rack 2 meshing with the two slide in the arc block until the two ends of the arc rack 1 and the arc rack 2 pass through the arc groove of the arc block and hold the fixing rod tightly, then stop rotating the adjusting handle, thereby realizing the connection and fixing between the pusher as a whole and the bamboo raft body, without drilling holes on the bamboo raft to damage the bamboo raft body, and realizing quick installation.

[0019] 2. The utility model is provided with a locking piece, which pushes the movable clamping block to move in the direction of the fixed clamping block by rotating the threaded sleeve cover until it is clamped and fixed with the outer wall of the adjusting rod and stops rotating. Through this design, the adjusting rod can be locked and fixed to prevent loosening.

[0020] 3. The utility model is provided with an angle adjustment mechanism, which can realize the adjustment of the up and down position of the propeller on the propeller by pulling out the pin on the outer wall of the arc-shaped seat from the pin hole and pulling the propeller up and down so that the fixed block connected to the bottom pushes the slider to slide in the arc-shaped seat. After adjustment, the pin can be inserted into the pin hole and extended to the limiting hole of the arc-shaped groove on the slider for limiting and fixing. Furthermore, the bottom of the arc-shaped seat can be rotatably connected to the base, so as to realize the adjustment of the left and right position of the propeller, which is beneficial to control the moving direction of the bamboo raft and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the propeller of the utility model;

[0023] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 It is a side cross-sectional view of the fixing member of the utility model;

[0025] Figure 5 It is a top view cross-sectional view of the adjusting rod and the locking member of the utility model;

[0026] Figure 6 This is a front view of the angle adjustment mechanism of the utility model;

[0027] Figure 7 This is a diagram showing the fixing member and the base being separated from each other in the present utility model.

[0028] In the figure: 1. raft body; 101. fixing rod; 2. equipment body; 3. base; 301. locking nut; 302. threaded hole; 4. arc block; 401. arc rack 1; 402. arc rack 2; 403. threaded sleeve; 5. adjustment handle; 6. adjustment rod; 7. driving gear 1; 8. driving gear 2; 9. cover; 10. bevel gear; 11. driven wheel 1; 12. driven wheel 2; 13. hollow sleeve; 14. fixing sleeve; 15. fixing clamp block; 16. movable clamp block; 17. threaded sleeve cover; 18. arc seat; 19. slider; 20. fixing block; 21. arc groove; 22. latch; 23. pin hole; 24. limit hole. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0032] Embodiment 1:

[0033] See also Figure 1-6 The utility model provides a power propulsion device for a bamboo raft that is easy to install and disassemble, comprising a bamboo raft body 1 and a propeller. A plurality of fixing rods 101 are fixedly installed on the bamboo raft body 1, and the propeller is detachably installed on the fixing rods 101;

[0034] The propeller comprises a device body 2, a base 3, and a fixing mechanism, wherein the device body 2 is movably mounted on the base 3, the fixing mechanism is arranged at the bottom of the base 3, and the fixing mechanism is detachably connected to the bamboo raft body 1;

[0035] The fixing mechanism includes a plurality of fixing component groups, and the plurality of fixing component groups are evenly distributed at the bottom of the base 3. The fixing component groups include an arc block 4, a claw, and an adjusting component. The arc block 4 is detachably mounted at the bottom of the base 3, and the claw is movably mounted inside the arc block 4. The claw is connected to the adjusting component, and the adjusting component is used to control the claw to be locked and fixed to the bamboo raft body 1.

[0036] The adjusting member includes an adjusting handle 5, an adjusting rod 6, a driving gear 1 7, and a driving gear 2 8. A cover shell 9 is fixedly installed on the outer wall of one side of the arc block 4. A bevel gear 10 is arranged inside the cover shell 9. The adjusting handle 5 is fixedly connected to one end of the adjusting rod 6. The adjusting rod 6 passes through the cover shell 9 and is connected to a transmission member. The transmission member is connected to the driving gear 1 7 and the driving gear 2 8. The driving gear 1 7 and the driving gear 2 8 are connected to the claw. A locking member 1 is provided on the adjusting rod 6, and the locking member 1 is used to lock the adjusting rod 6 for rotation.

[0037] The claw comprises an arc-shaped rack 1 401 and an arc-shaped rack 2 402, the driving gear 1 7 and the driving gear 2 8 are respectively meshed with the arc-shaped rack 1 401 and the arc-shaped rack 2 402, and the arc-shaped rack 1 401 and the arc-shaped rack 2 402 are movably installed inside the arc block 4;

[0038] The transmission member includes a bevel gear 10, a driven wheel 11, and a driven wheel 2 12. The bevel gear 10 is installed inside the cover shell 9. The driven wheel 11 and the driven wheel 2 12 are arranged opposite to each other and mesh with the two sides of the bevel gear 10 respectively. The driven wheel 1 11 is fixedly connected to the adjusting rod 6. The end of the adjusting rod 6 is fixedly connected to the driving gear 1 7. A hollow sleeve 13 is sleeved on the outer wall of the adjusting rod 6. A fixing plate is fixedly installed on the outer wall of the arc block 4. The hollow sleeve 13 is rotatably connected to the center of the fixing plate. The two ends of the hollow sleeve 13 are respectively connected to the driven wheel 2 12 and the driving wheel 2.

[0039] An arc-shaped through groove is provided inside the arc block 4, and the arc-shaped rack 1 401 and the arc-shaped rack 2 402 are movably installed side by side in the arc-shaped through groove. The ends of the arc-shaped rack 1 401 and the arc-shaped rack 2 402 pass through the two ends of the arc-shaped through groove and are tightly fixed to the fixing rod 101.

[0040] When in use, after clamping the arc block 4 with the top surface of the fixed rod 101 on the bamboo raft, the adjusting rod 6 on the adjusting handle 5 is rotated to make the transmission gear 1 drive the bevel gear 10 to rotate, and at the same time, the transmission gear 2 follows the rotation. When the transmission gear 1 and the transmission gear 2 rotate, the driving gear 1 7 and the driving gear 2 8 connected with the adjusting rod 6 and the hollow sleeve 13 follow the rotation. At this time, the arc rack 1 401 and the arc rack 2 402 meshing with the two slide in the arc block 4 until the two ends of the arc rack 1 401 and the arc rack 2 402 pass through the arc groove of the arc block 4 and hold the fixed rod 101 tightly, then stop rotating the adjusting handle 5, thereby realizing the connection and fixation between the pusher as a whole and the bamboo raft body 1, without the need to drill holes on the bamboo raft to damage the bamboo raft body 1, and achieving quick installation.

[0041] Embodiment 2:

[0042] Please pay attention to Figure 3 , Figure 5The locking member 1 includes a fixed sleeve 14, a fixed clamping block 15, and a movable clamping block 16. The fixed clamping block 15 is fixedly installed inside the fixed sleeve 14, and the movable clamping block 16 is movably installed at one end inside the fixed sleeve 14. The fixed clamping block 15 and the movable clamping block 16 are opposite to each other on a side provided with a groove matching the outer wall of the adjusting rod 6. The outer wall of the fixed sleeve 14 is symmetrically provided with two through holes, and the two through holes are connected to the grooves. The adjusting rod 6 extends through the through holes on one side to the through holes on the other side. The outer wall of one end of the fixed sleeve 14 is threadedly connected with a threaded sleeve cover 17, and the threaded sleeve cover 17 is rotatably connected to the movable clamping block 16.

[0043] When in use, the threaded sleeve cover 17 is rotated to push the movable clamp block 16 to move toward the fixed clamp block 15 until it is clamped and fixed with the outer wall of the adjusting rod 6 and stops rotating. This design can lock and fix the adjusting rod 6 to prevent it from loosening.

[0044] Embodiment three:

[0045] Please pay attention to Figure 2 , Figure 4 , Figure 6 An angle adjustment mechanism is provided at the top center of the base 3 , and the angle adjustment mechanism is connected to the bottom of the device body 2 .

[0046] The angle adjustment mechanism includes an arc seat 18, the bottom of which is rotatably connected to the base 3, a slider 19 is slidably provided in the arc seat 18, a fixed block 20 is fixedly connected to the top of the slider 19, and the fixed block 20 is fixedly connected to the bottom of the equipment body 2, an arc groove 21 matching the arc seat 18 is provided at the bottom of the slider 19, and a locking piece 2 is provided on the arc seat 18, and the locking piece 2 is used to lock the slider 19.

[0047] The second locking member includes a latch 22 and a pin hole 23. The pin hole 23 is provided on an outer wall of one side of the arc seat 18. One end of the latch 22 is detachably connected to the pin hole 23. The other end of the latch 22 is connected to the arc seat 18 through a chain. A plurality of limiting holes 24 matching the latch 22 are provided on the outer wall of the arc groove 21.

[0048] When in use, after the latch 22 on the outer wall of the arc-shaped seat 18 is pulled out from the pin hole 23, the propeller is pulled up and down so that the fixing block 20 connected to the bottom pushes the slider 19 to slide in the arc-shaped seat 18, thereby adjusting the up and down position of the propeller on the propeller. After adjustment, the latch 22 can be inserted into the pin hole 23 to extend into the limiting hole 24 of the arc-shaped groove 21 on the slider 19 for limit fixing. Furthermore, the bottom of the arc-shaped seat 18 is rotatably connected to the base 3, thereby adjusting the left and right position of the propeller, which is beneficial to control the moving direction of the bamboo raft and has strong practicality.

[0049] Embodiment 4:

[0050] Please pay attention to Figure 7 A threaded sleeve 403 is fixedly installed on the top of the arc block 4, a threaded hole 302 is provided on the base 3, a locking nut 301 is threadedly connected to the threaded sleeve 403, and the locking nut 301 passes through the threaded hole 302 and is detachably connected to the threaded sleeve 403.

[0051] When in use, the locking nut 301 is rotated until the locking nut 301 is separated from the threaded sleeve 403. Through this design, the arc block 4 can be disassembled, and the direction of the arc can be adjusted according to actual needs, which is very practical.

[0052] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A power propulsion device for a bamboo raft that is easy to install and disassemble, characterized in that: It comprises a bamboo raft body (1) and a propeller, wherein a plurality of fixing rods (101) are fixedly mounted on the bamboo raft body (1), and the propeller is detachably mounted on the fixing rods (101); The propeller comprises a device body (2), a base (3), and a fixing mechanism, wherein the device body (2) is movably mounted on the base (3), the fixing mechanism is arranged at the bottom of the base (3), and the fixing mechanism is detachably connected to the bamboo raft body (1); The fixing mechanism comprises a plurality of fixing member groups, the plurality of fixing member groups being evenly distributed at the bottom of the base (3), the fixing member groups comprising an arc block (4), a claw, and an adjusting member, the arc block (4) being detachably mounted at the bottom of the base (3), the claw being movably mounted inside the arc block (4), the claw being connected to the adjusting member, and the adjusting member being used to control the claw to be locked and fixed to the bamboo raft body (1); An angle adjustment mechanism is also provided at the center of the base (3), and the angle adjustment mechanism is connected to the bottom of the device body (2).

2. The power propulsion device for bamboo rafts that is easy to install and disassemble according to claim 1 is characterized in that: The adjusting member comprises an adjusting handle (5), an adjusting rod (6), a driving gear 1 (7), and a driving gear 2 (8); a cover shell (9) is fixedly mounted on an outer wall of one side of the arc block (4); a bevel gear (10) is arranged inside the cover shell (9); the adjusting handle (5) is fixedly connected to one end of the adjusting rod (6); the adjusting rod (6) passes through the cover shell (9) and is connected to a transmission member; the transmission member is connected to the driving gear 1 (7) and the driving gear 2 (8); the driving gear 1 (7) and the driving gear 2 (8) are connected to the claw; a locking member 1 is provided on the adjusting rod (6); the locking member 1 is used to lock the adjusting rod (6) from rotating.

3. The power propulsion device for bamboo rafts that is easy to install and disassemble according to claim 2 is characterized in that: The locking member 1 comprises a fixed sleeve (14), a fixed clamping block (15), and a movable clamping block (16); the fixed clamping block (15) is fixedly mounted inside the fixed sleeve (14); the movable clamping block (16) is movably mounted at one end inside the fixed sleeve (14); a groove matching the outer wall of the adjusting rod (6) is provided on the opposite side of the fixed clamping block (15) and the movable clamping block (16); the outer wall of the fixed sleeve (14) is symmetrically provided with two through holes, the two through holes are connected to the grooves, the adjusting rod (6) passes through the through holes on one side to extend out from the through holes on the other side; a threaded sleeve cover (17) is threadedly connected to the outer wall of one end of the fixed sleeve (14); the threaded sleeve cover (17) is rotatably connected to the movable clamping block (16).

4. The power propulsion device for bamboo rafts that is easy to install and disassemble according to claim 2 is characterized in that: The claw comprises an arc-shaped rack 1 (401) and an arc-shaped rack 2 (402), the driving gear 1 (7) and the driving gear 2 (8) are respectively meshed with the arc-shaped rack 1 (401) and the arc-shaped rack 2 (402), and the arc-shaped rack 1 (401) and the arc-shaped rack 2 (402) are movably mounted inside the arc block (4); The transmission member comprises a bevel gear (10), a driven wheel 1 (11), and a driven wheel 2 (12); the bevel gear (10) is mounted inside the housing (9); the driven wheel 1 (11) and the driven wheel 2 (12) are arranged opposite to each other and mesh with two sides of the bevel gear (10) respectively; the driven wheel 1 (11) is fixedly connected to the adjusting rod (6); the end of the adjusting rod (6) is fixedly connected to the driving gear 1 (7); a hollow sleeve (13) is sleeved on the outer wall of the adjusting rod (6); a fixing plate is fixedly mounted on the outer wall of the arc block (4); the hollow sleeve (13) is rotatably connected to the center of the fixing plate; and the two ends of the hollow sleeve (13) are respectively connected to the driven wheel 2 (12) and the driving wheel 2.

5. The power propulsion device for bamboo rafts that is easy to install and disassemble according to claim 4 is characterized in that: An arc-shaped through groove is provided inside the arc-shaped block (4), and the arc-shaped rack one (401) and the arc-shaped rack two (402) are movably installed side by side in the arc-shaped through groove. The ends of the arc-shaped rack one (401) and the arc-shaped rack two (402) respectively pass through the two ends of the arc-shaped through groove and are tightly fixed to the fixing rod (101).

6. The power propulsion device for bamboo rafts that is easy to install and disassemble according to claim 1 is characterized in that: The angle adjustment mechanism comprises an arc seat (18), the bottom of which is rotatably connected to the base (3), a slider (19) is slidably arranged in the arc seat (18), a fixing block (20) is fixedly connected to the top of the slider (19), the fixing block (20) is fixedly connected to the bottom of the device body (2), the bottom of the slider (19) is provided with an arc groove (21) matching the arc seat (18), and a locking piece 2 is provided on the arc seat (18), and the locking piece 2 is used to lock the slider (19).

7. The power propulsion device for bamboo rafts that is easy to install and disassemble according to claim 6 is characterized by: The second locking member comprises a latch pin (22) and a pin hole (23); the pin hole (23) is provided on an outer wall of one side of the arc-shaped seat (18); one end of the latch pin (22) is detachably connected to the pin hole (23); the other end of the latch pin (22) is connected to the arc-shaped seat (18) via a chain; and a plurality of limiting holes (24) matching the latch pin (22) are provided on the outer wall of the arc-shaped groove (21).

8. The power propulsion device for bamboo rafts that is easy to install and disassemble according to claim 1 is characterized by: A threaded sleeve (403) is fixedly mounted on the top of the arc block (4); a threaded hole (302) is provided on the base (3); a locking nut (301) is threadedly connected to the threaded sleeve (403); and the locking nut (301) passes through the threaded hole (302) and is detachably connected to the threaded sleeve (403).

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