Pentagonal ratchet type locknut

Abstract

The invention discloses a pentagonal ratchet wheel type locknut, and aims to provide a pentagonal ratchet wheel type locknut which is convenient to disassemble while achieving an anti-loosening effect. The nut comprises a nut body, a screw rod, a ratchet wheel assembly and a gasket, the nut body is in threaded connection with the screw rod, the gasket is sleeved on the screw rod and matched with one side of the nut body, one end of the ratchet wheel assembly is detachably connected with the screw rod, and the other end of the ratchet wheel assembly is connected with the other side of the nut body. A first ratchet block is arranged on the side face, facing the nut body, of the gasket and makes contact with the nut body, and the first ratchet block is detachably connected with the gasket. The anti-loosening nut has the beneficial effects that the anti-loosening effect is achieved, meanwhile, dismounting is convenient, the rotating direction of the nut body can be limited, the first ratchet wheel block can be dismounted, the gasket can be prevented from sliding, the relative position of the nut body and the gasket can be fixed, the position of the nut body on a screw can be limited, and the position of the screw can be limited.

Description

Technical Field

[0001] The invention relates to the technical field related to loosening nuts, in particular to a five-angle ratchet type anti-loosening nut. Background Art

[0002] Bolts and nuts are commonly used fasteners. Traditional nuts are easy to loosen when subjected to vibration or impact, causing the connection parts to separate, posing a safety hazard. Therefore, various anti-loosening measures are added to prevent loosening. Among them, ratchet nuts are often used because of their excellent anti-loosening performance. However, existing ratchet anti-loosening nuts are mostly difficult to disassemble. For scenes where workpieces need to be disassembled, the use of ratchet anti-loosening nuts is limited.

[0003] The Chinese patent authorization announcement number is CN113944680B, and the authorization announcement date is August 5, 2022. A ratchet locking mechanism is disclosed, including: a screwing assembly, the screwing assembly includes a nut and a rotating seat sleeved on the outside of the nut, a spring piece is installed on the radial outer side of the nut, and a ratchet that can lock the spring piece is connected to the rotating seat to prevent the nut from rotating in the opposite direction; the screwing assembly is connected to a screw rod, and a stop washer connected to the rotating seat is sleeved on the screw rod to prevent the nut from rotating, and the stop washer includes a stop plane located on its inner wall surface, and a flat cut surface matching the stop plane is provided on the side wall of the screw rod; the rotating seat, the ratchet and the stop washer are arranged in sequence, and the ratchet and the stop washer are separately connected by a fastening pin, and a plurality of claws are provided on the end face of the rotating seat close to the ratchet, and an annular groove for the claws to be engaged is provided on the outer wall of the ratchet. The shortcoming of this utility model is that the ratchet structure of the device is located inside the nut, which is inconvenient when the nut needs to be removed. Summary of the invention

[0004] The invention aims to overcome the disadvantage that most of the existing ratchet anti-loosening nuts in the prior art are difficult to disassemble, and provides a five-pointed ratchet anti-loosening nut which can achieve the anti-loosening effect and is also easy to disassemble.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A five-pointed ratchet anti-loosening nut comprises a nut body, a screw, a ratchet assembly and a gasket, wherein the nut body is threadedly connected to the screw, the gasket is sleeved on the screw, the gasket matches one side of the nut body, one end of the ratchet assembly is detachably connected to the screw, the other end of the ratchet assembly is connected to the other side of the nut body, a ratchet block is provided on a side surface of the gasket facing the nut body, the ratchet block is in contact with the nut body, and the ratchet block is detachably connected to the gasket.

[0006] The nut body and the nut constitute the main structure of the fastener. When tightening and connecting, the gasket is placed between the nut body and the workpiece. When the nut is screwed down, the gasket is squeezed, and the ratchet block on the gasket contacts the nut body. During the squeezing process of the nut body and the ratchet block, the ratchet block one fixes the nut body to limit the direction of the nut body being screwed. However, because the ratchet block one and the gasket are detachably connected, the fixation of the nut body by the gasket is released by removing the ratchet block one, and then a detachable ratchet assembly is installed on the other side of the nut body. The ratchet assembly restricts the nut body and the screw together to prevent the nut body from rotating due to the rotation of the screw. The ratchet assembly can also be disassembled. After both the ratchet block one and the ratchet assembly are disassembled, the nut body can be removed. After the nut is fixed and prevented from loosening by the ratchet block one and the ratchet assembly, the anti-loosening assembly can also be quickly removed when it is necessary to disassemble, thereby achieving the purpose of achieving the anti-loosening effect while facilitating disassembly.

[0007] Preferably, a plurality of ratchet blocks 2 distributed in a circle are installed on one side of the nut body, the cross-sectional shape of the ratchet block 2 is triangular, the ratchet block 1 is provided with a plurality of pieces and distributed in a circle on the gasket, the cross-sectional shape of the ratchet block 1 is also triangular, the ratchet block 1 and the ratchet block 2 are in opposite directions, and the ratchet block 1 and the ratchet block 2 correspond one to one. A plurality of ratchet blocks 2 distributed in a circle are installed on the side of the nut body facing the workpiece, the ratchet block 2 is in an arc shape and has a triangular cross-sectional shape, the ratchet block 1 and the ratchet block 2 correspond one to one, and the protrusion ends of the ratchet block 1 and the ratchet block 2 are opposite, and the direction of the screwing process of the nut body can be limited by the screwing contact between the ratchet block 1 and the ratchet block 2 to achieve an anti-loosening effect, and in the process of the ratchet block 2 squeezing the ratchet block 2, the gasket can better fit the workpiece to ensure the tight connection between the gasket and the workpiece, and such a design can limit the rotation direction of the nut body.

[0008] Preferably, a sliding block 1 is installed on the bottom surface of the ratchet block 1, a sliding groove 1 is provided on one side of the gasket, the ratchet block 1 is slidably connected with the gasket through the cooperation of the sliding block 1 and the sliding groove 1, and a pull ring is installed on the outer side of the ratchet block 1. Before tightening the nut, the ratchet block 1 is connected with the gasket along the sliding groove 1, and after the ratchet block 1 is fully installed, it can be matched with the nut body. When the nut body needs to be disassembled, the ratchet block 1 is pulled through the pull ring on the ratchet block 1, and the ratchet block 1 is pulled out of the gasket along the sliding groove 1 for disassembly. Such a design allows the ratchet block 1 to be disassembled.

[0009] Preferably, a retaining ring is provided on the gasket, and the inner side of the retaining ring is in contact with the outer side of the ratchet block 1, and the gasket on one side of the retaining ring is in contact. Since the ratchet block 1 and the gasket are detachably connected, in order to prevent the ratchet block from falling during use, a retaining ring is installed on the gasket to limit the position of the ratchet block 1, and the inner ring of the retaining ring contacts the outer side of the ratchet block 1. The retaining ring is in contact with the gasket, and the retaining ring is made of plastic and can be damaged. When the ratchet block 1 needs to be removed, the retaining ring can be used to limit the position of the ratchet block 1 by destroying the retaining ring contact. Such a design can limit the position of the ratchet block 1.

[0010] Preferably, a plurality of friction particles are provided on the side of the gasket away from the nut body, the cross-sectional shape of the friction particles is semicircular, and the friction particles are distributed in a circular pattern. The side of the gasket that fits the workpiece is prone to sliding, and the gasket will rotate with the nut body, thereby reducing the anti-loosening effect. Therefore, a plurality of friction particles distributed in a circular pattern are installed on the side of the gasket that contacts the workpiece. The friction particles contact the workpiece, and the gasket is squeezed during the screwing process of the nut body. The friction block on the gasket will press a dent on the workpiece. The gasket is limited by the friction particles to ensure that it will not slide, thereby better limiting the nut body. Such a design can prevent the gasket from sliding.

[0011] As a preference, the nut body is provided with a plurality of connecting screws distributed in a circumference, the connecting screws are threadedly connected with the nut body, the gasket is provided with a plurality of connecting plates, the connecting plates correspond to the connecting screws one by one, the connecting plates are provided with connecting holes, the lower end of the connecting screws penetrates the nut body and is placed in the connecting holes. During long-term use, the nut body is also prone to deflection, and in order to limit the deflection of the nut body, a plurality of connecting screws distributed in a circumference are installed on the nut body, the connecting screws are threadedly connected with the nut body, the connecting screws are connected with the nut body by screwing, the lower end of the connecting screws is inserted into the connecting hole of the connecting plate on the gasket, and is used to ensure the relative position of the gasket nut body, after the ratchet block 2 on the nut body cooperates with the ratchet block 1 on the gasket, the gasket and the nut body are limited by the connecting screws, the rotation of the nut body will drive the gasket to rotate together, and the gasket fits with the workpiece through the friction particles, so as to ensure the position of the nut body, such a design can fix the relative position of the nut body and the gasket.

[0012] Preferably, the ratchet assembly includes a ratchet ring and a fixed plate, the ratchet ring is provided with a plurality of ratchet grooves distributed in a circumferential manner, the ratchet ring is sleeved on the screw, one end of the fixed plate is rotatably connected to the nut body, the other end of the fixed plate matches the ratchet groove, a rebound plate is installed on the screw, the rebound plate is provided with a spring, one end of the spring is connected to the rebound plate, and the other end of the spring is connected to the fixed plate. In order to further improve the anti-loosening effect, the position of the nut body on the screw is limited by a ratchet assembly installed on the screw, and a ratchet ring is installed on the screw, and the bottom surface of the ratchet ring contacts the side surface of the nut body. The ratchet ring is provided with circumferentially distributed ratchet grooves, and a fixing plate is installed on the nut body. The cross-sectional shape of one end of the fixing plate is triangular and can cooperate with the ratchet groove. The fixing plate is rotatably connected to the nut body, and one end of the fixing plate pushes the fixing plate to fit into the ratchet groove through a spring. The rotation of the ratchet ring is limited by the cooperation between the ratchet groove and the fixing plate. The nut body will loosen on the screw only when it is twisted. Due to the fit of the ratchet ring and the nut body, the ratchet ring can limit the rotation of the nut body, thereby improving the anti-loosening performance of the nut body. Such a design can limit the position of the nut body on the screw.

[0013] Preferably, the ratchet ring is provided with a mounting frame, the mounting frame includes a bonding plate and a connecting rod, the bonding plate is bonded to the bottom surface of the screw, the connecting rod is provided with a plurality of connecting rods and distributed in a circle, one end of the connecting rod is connected to the bonding plate, and the other end of the connecting rod is connected to the ratchet ring. The ratchet ring is provided with a mounting frame, the mounting frame can ensure that the ratchet ring is bonded to the side of the nut body, the bonding plate of the mounting frame is bonded to the bottom surface of the screw, and then the connecting rods distributed in a circle on the bonding plate are connected to the ratchet ring, the position of the ratchet ring is limited by the mounting frame, and the ratchet ring can also be removed by the mounting frame, such a design can install the ratchet ring.

[0014] Preferably, a mounting block is installed on the side of the bonding plate facing the screw rod, and a plurality of circumferentially distributed card plates are installed on the mounting block, a card slot is installed on the bottom surface of the screw rod, and the mounting block is placed in the card slot, and a plurality of limit plates are arranged on the side of the card slot, and the limit plates correspond to the card plates one by one, and the limit plates include a top plate and a side plate, and the cross-sectional shape of the limit plates is L-shaped. In order to ensure that the connection between the mounting frame and the screw rod is detachable, the mounting block of the bonding plate on the mounting frame is placed in the card slot on the bottom surface of the screw rod body, and then the mounting frame is rotated to screw the card plate on the mounting block into the inner side of the limit plate in the card slot, and the connection between the mounting frame and the screw rod is completed under the restriction of the limit plate, and then under the cooperation of the fixed plate and the ratchet ring, the card plate cannot be screwed out of the limit plate, and the fixing of the mounting frame is completed. If the mounting frame needs to be disassembled, it is necessary to first separate the fixed plate and the ratchet ring, and then rotate the mounting frame to separate the card plate and the limit plate, and then the mounting frame and the ratchet ring can be removed. Such a design is convenient for disassembling the mounting frame.

[0015] Preferably, a plurality of positioning cones are provided on the side of the screw rod facing the nut body, the plurality of positioning cones are distributed in a circumference, and the cross-sectional shape of the positioning cones is triangular. When the nut body is prevented from loosening, the vibration of the screw rod is also likely to cause loosening, so a plurality of positioning cones are installed on the side where the top cap of the screw rod contacts the workpiece, and the positioning cones are cone-shaped. When tightening, the positioning cones contact the workpiece, and as the external force increases, the positioning cones can wedge into the workpiece, thereby limiting the position of the screw rod and preventing the screw rod from vibrating and deviating. Such a design can limit the position of the screw rod.

[0016] The beneficial effects of the present invention are: while achieving the anti-loosening effect, it is also easy to disassemble, can limit the rotation direction of the nut body, can remove the ratchet block one, can limit the ratchet block one, can prevent the gasket from sliding, can fix the relative position of the nut body and the gasket, can limit the position of the nut body on the screw, can install a ratchet ring, facilitate disassembly of the mounting frame, and can limit the position of the screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 yes Figure 1 A schematic diagram of the structure of the nut body; Figure 3 yes Figure 1 A schematic diagram of the structure of the middle gasket; Figure 4 yes Figure 1 Another structural schematic diagram of the middle gasket; Figure 5 yes Figure 1 A schematic diagram of the structure of the middle ratchet block 1; Figure 6 yes Figure 1 A schematic diagram of the structure of the middle ratchet assembly; Figure 7 yes Figure 1 Schematic diagram of the structure of the middle screw.

[0018] In the figure: 1. nut body; 11. ratchet block 2; 12. connecting screw; 13. rebound plate; 2. screw; 21. slot; 22. limit plate; 23. top plate; 24. side plate; 25. positioning cone; 3. ratchet assembly; 31. ratchet ring; 32. fixing plate; 33. ratchet slot; 34. spring; 35. mounting frame; 36. fitting plate; 37. connecting rod; 38. mounting block; 39. clamping plate; 4. gasket; 41. sliding slot 1; 42. friction particles; 43. connecting plate; 44. connecting hole; 5. ratchet block 1; 51. sliding block 1; 52. pull ring; 6. retaining ring. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] like Figure 1 In the embodiment, a pentagonal ratchet anti-loosening nut includes a nut body 1, a screw rod 2, a ratchet assembly 3 and a gasket 4. The nut body 1 is threadedly connected to the screw rod 2, and the gasket 4 is sleeved on the screw rod 2. The gasket 4 matches one side of the nut body 1. One end of the ratchet assembly 3 is detachably connected to the screw rod 2, and the other end of the ratchet assembly 3 is connected to the other side of the nut body 1. A ratchet block 5 is provided on the side surface of the gasket 4 facing the nut body 1. The ratchet block 5 is in contact with the nut body 1, and the ratchet block 5 is detachably connected to the gasket 4.

[0021] like Figure 2 As shown, a plurality of ratchet blocks 11 distributed in a circle are installed on one side of the nut body 1, and the cross-sectional shape of the ratchet block 11 is triangular. A plurality of ratchet blocks 15 are provided and distributed in a circle on the gasket 4, and the cross-sectional shape of the ratchet block 15 is also triangular. The ratchet block 15 and the ratchet block 11 are oriented in opposite directions, and the ratchet block 15 and the ratchet block 11 correspond one to one.

[0022] like Figure 3 , Figure 5 As shown, a sliding block 51 is installed on the bottom surface of the ratchet block 5, a sliding groove 41 is provided on one side of the gasket 4, the ratchet block 5 is slidably connected with the gasket 4 through the cooperation of the sliding block 51 and the sliding groove 41, and a pull ring 52 is installed on the outer side of the ratchet block 5.

[0023] like Figure 4 As shown, a retaining ring 6 is provided on the gasket 4, the inner side of the retaining ring 6 is in contact with the outer side of the ratchet block 5, and the gasket 4 is in contact with one side of the retaining ring 6. A plurality of friction particles 42 are provided on the side of the gasket 4 away from the nut body 1, and the cross-sectional shape of the friction particles 42 is semicircular, and the friction particles 42 are distributed in a circumference.

[0024] A plurality of connecting screws 2 distributed in a circle are provided on the nut body 1, and the connecting screws 2 are threadedly connected to the nut body 1. A plurality of connecting plates 43 are installed on the gasket 4, and the connecting plates 43 correspond to the connecting screws 2 one by one. The connecting plates 43 are provided with connecting holes 44, and the lower ends of the connecting screws 2 pass through the nut body 1 and are placed in the connecting holes 44.

[0025] like Figure 6 As shown, the ratchet assembly 3 includes a ratchet ring 31 and a fixed plate 32. The ratchet ring 31 is provided with a plurality of ratchet grooves 33 distributed in a circumferential manner. The ratchet ring 31 is sleeved on the screw rod 2. One end of the fixed plate 32 is rotatably connected to the nut body 1, and the other end of the fixed plate 32 matches the ratchet groove 33. A rebound plate 13 is installed on the screw rod 2. The rebound plate 13 is provided with a spring 34. One end of the spring 34 is connected to the rebound plate 13, and the other end of the spring 34 is connected to the fixed plate 32.

[0026] A mounting frame 35 is provided on the ratchet ring 31, and the mounting frame 35 includes a bonding plate 36 and a connecting rod 37. The bonding plate 36 is bonded to the bottom surface of the screw rod 2, and a plurality of connecting rods 37 are provided and distributed in a circle. One end of the connecting rod 37 is connected to the bonding plate 36, and the other end of the connecting rod 37 is connected to the ratchet ring 31.

[0027] like Figure 7 As shown, a mounting block 38 is installed on the side of the bonding plate 36 facing the screw rod 2, and a plurality of circumferentially distributed clamping plates 39 are installed on the mounting block 38. A clamping groove 21 is installed on the bottom surface of the screw rod 2. The mounting block 38 is placed in the clamping groove 21. A plurality of limiting plates 22 are provided on the side of the clamping groove 21. The limiting plates 22 correspond to the clamping plates 39 one by one. The limiting plates 22 include a top plate 23 and a side plate 24. The cross-sectional shape of the limiting plates 22 is L-shaped.

[0028] A plurality of positioning cones 25 are provided on one side of the screw rod 2 facing the nut body 1 . The plurality of positioning cones 25 are distributed in a circumference, and the cross-section of the positioning cones 25 is triangular.

[0029] To tighten the connection, first connect the screw rod 2 to the workpiece, ensuring that the side of the screw rod 2 equipped with the positioning cone 25 is in contact with the workpiece. Then, put the washer 4 equipped with the ratchet block 5 on the screw rod, making the side of the washer 4 equipped with the friction particles 42 in contact with the workpiece, and then screw the nut body 1 into the screw rod.

[0030] After the nut body 1 is screwed in, as the nut body 1 descends, the ratchet block 1 5 on the nut body 1 contacts the ratchet block 2 11 until they engage with each other, completing the cooperation between the gasket 4 and the nut body 1, and then the connecting screw 12 passes through the nut body 1 and the connecting hole 44 of the connecting plate 43 on the gasket 4, thereby further fixing the position of the nut body 1 and the gasket 4. Due to the cooperation between the ratchet block 1 5 and the ratchet block 2 51, the reverse rotation of the nut body 1 is restricted, and the friction particles 42 on the gasket 4 fit with the workpiece under external force, thereby preventing the gasket 4 from rotating together with the nut body 1, thereby completing the restriction of the rotation direction of the nut body 1.

[0031] The ratchet assembly 3 is then installed on the screw rod 2, and the mounting frame 35 of the ratchet assembly 3 is sleeved on the screw rod 2, and the mounting block 38 on the fitting plate 36 is placed in the slot 21 on the screw rod 2, and then the mounting frame 35 is rotated to screw the clamping plate 39 on the mounting block 38 into the inner side of the limiting plate 22 in the slot 21 to complete the connection between the mounting frame 35 and the screw rod 2. After the mounting frame 35 is installed, the ratchet ring 31 installed on the bottom surface of the mounting frame 35 is connected to the nut body 1, and the ratchet groove 33 on the ratchet ring 31 corresponds to the fixed plate 32 rotatably connected to the nut body 1, and the fixed plate 32 limits the rotation direction of the ratchet ring 31, so as to always limit the clamping plate 39 on the mounting frame 35 in the limiting plate 22 to prevent the mounting frame 35 from falling off. The ratchet ring 31 below the mounting frame 35 can ensure the position of the nut body 1 on the screw rod 2, and the nut body 1 is further prevented from loosening.

[0032] When the nut body 1 needs to be disassembled, the ratchet assembly 3 is first disassembled to separate the fixing plate 32 from the ratchet ring 31, and then the mounting frame 35 is rotated to rotate the clamping plate 39 on the mounting frame 35 out of the limiting plate 22, and the mounting frame 35 and the ratchet ring 31 are separated from the screw rod 2, and the restriction of the mounting frame 35 on the nut body 1 is released. Then the retaining ring 6 on the gasket 4 is destroyed to cancel the restriction on the ratchet block 1 5, and then the ratchet block 1 5 is completely pulled out of the gasket 4 through the pull ring 52, so that the ratchet block 2 11 is not squeezed and contacts the restriction of the gasket 4 on the nut body 1. After the restriction of the nut body 1 is released, the nut body 1 can be disassembled.

Claims

1. A five-pointed ratchet lock nut, characterized in that: The invention comprises a nut body (1), a screw rod (2), a ratchet assembly (3) and a gasket (4), wherein the nut body (1) is threadedly connected to the screw rod (2), the gasket (4) is sleeved on the screw rod (2), the gasket (4) matches one side of the nut body (1), one end of the ratchet assembly (3) is detachably connected to the screw rod (2), the other end of the ratchet assembly (3) is connected to the other side of the nut body (1), a ratchet block (5) is provided on a side surface of the gasket (4) facing the nut body (1), the ratchet block (5) is in contact with the nut body (1), and the ratchet block (5) is detachably connected to the gasket (4).

2. A pentagonal ratchet lock nut according to claim 1, characterized in that: A plurality of ratchet blocks 2 (11) distributed in a circumference are mounted on one side of the nut body (1), the cross-sectional shape of the ratchet block 2 (11) being triangular, a plurality of ratchet blocks 1 (5) are provided and distributed in a circumference on the gasket (4), the cross-sectional shape of the ratchet block 1 (5) also being triangular, the ratchet block 1 (5) and the ratchet block 2 (11) facing in opposite directions, and the ratchet block 1 (5) and the ratchet block 2 (11) corresponding one to one.

3. A pentagonal ratchet lock nut according to claim 2, characterized in that: A sliding block (51) is installed on the bottom surface of the ratchet block (5), and a sliding groove (41) is provided on one side of the gasket (4). The ratchet block (5) is slidably connected to the gasket (4) through the cooperation between the sliding block (51) and the sliding groove (41), and a pull ring (52) is installed on the outer side of the ratchet block (5).

4. A pentagonal ratchet lock nut according to claim 2, characterized in that: A retaining ring (6) is provided on the gasket (4), the inner side of the retaining ring (6) is in contact with the outer side of the ratchet block 1 (5), and one side of the retaining ring (6) is in contact with the gasket (4).

5. A pentagonal ratchet lock nut according to claim 2, characterized in that: A plurality of friction particles (42) are provided on a side of the gasket (4) away from the nut body (1); the cross-sectional shape of the friction particles (42) is semicircular, and the friction particles (42) are distributed in a circumferential manner.

6. A pentagonal ratchet lock nut according to claim 2, characterized in that: The nut body (1) is provided with a plurality of connecting screws (2) distributed in a circumference, the connecting screws (2) being threadedly connected to the nut body (1), the gasket (4) being provided with a plurality of connecting plates (43), the connecting plates (43) corresponding one to the connecting screws (2), the connecting plates (43) being provided with connecting holes (44), the lower ends of the connecting screws (2) passing through the nut body (1) and being placed in the connecting holes (44).

7. The pentagonal ratchet lock nut according to claim 1, characterized in that: The ratchet assembly (3) comprises a ratchet ring (31) and a fixing plate (32), wherein the ratchet ring (31) is provided with a plurality of ratchet grooves (33) distributed in a circumferential manner, the ratchet ring (31) is sleeved on the screw rod (2), one end of the fixing plate (32) is rotatably connected to the nut body (1), and the other end of the fixing plate (32) matches the ratchet groove (33), and a rebound plate (13) is installed on the screw rod (2), and a spring (34) is provided on the rebound plate (13), one end of the spring (34) is connected to the rebound plate (13), and the other end of the spring (34) is connected to the fixing plate (32).

8. A pentagonal ratchet lock nut according to claim 7, characterized in that: The ratchet ring (31) is provided with a mounting frame (35), the mounting frame (35) comprising a bonding plate (36) and a connecting rod (37), the bonding plate (36) being bonded to the bottom surface of the screw rod (2), a plurality of connecting rods (37) being provided and distributed in a circumference, one end of the connecting rod (37) being connected to the bonding plate (36), and the other end of the connecting rod (37) being connected to the ratchet ring (31).

9. A pentagonal ratchet lock nut according to claim 8, characterized in that: A mounting block (38) is mounted on the side of the laminating plate (36) facing the screw rod (2), and a plurality of circumferentially distributed clamping plates (39) are mounted on the mounting block (38). A clamping groove (21) is mounted on the bottom surface of the screw rod (2), and the mounting block (38) is placed in the clamping groove (21). A plurality of limiting plates (22) are arranged on the side of the clamping groove (21), and the limiting plates (22) correspond to the clamping plates (39) one by one. The limiting plates (22) include a top plate (23) and a side plate (24), and the cross-sectional shape of the limiting plates (22) is L-shaped.

10. The pentagonal ratchet lock nut according to claim 1, characterized in that: A plurality of positioning cones (25) are provided on a side of the screw rod (2) facing the nut body (1), the plurality of positioning cones (25) are distributed in a circumference, and the cross-section of the positioning cones (25) is triangular.

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