Knife angle bolt and preparation process thereof

Abstract

The invention relates to the technical field of bolts, provides a tool angle bolt and a preparation process thereof, and solves the problem of time-consuming installation caused by design defects of an existing tool angle bolt. The tool angle bolt comprises a bolt body, a reducing section is arranged at the other end of the bolt body, and a plurality of protrusions and a plurality of grooves are annularly arranged on the outer side of the reducing section at intervals; the adjacent protrusions are connected through the grooves, and one end of each groove is concaved inwards to form a clamping part. A U-shaped groove is formed in one end of the nut; the limiting piece is arranged in the U-shaped groove, the limiting piece is of a hollow structure, and an opening is formed in the limiting piece; one end of the arc-shaped piece is connected with the limiting piece, the other end of the arc-shaped piece extends clockwise in an arc shape and is matched with one clamping part, and the extending direction of the arc-shaped piece is the same as the thread direction of the bolt; and anticlockwise rotation of the nut is limited through cooperation of the arc-shaped piece and the clamping part, and the anti-loosening effect is achieved while the installation duration is not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of bolts, and in particular to a knife angle bolt and a preparation process thereof. Background Art

[0002] Knife-angle bolts are a special type of Hexagon-head bolt, also known as "L-bolts," named for their "knife-shaped" head. Knife-angle bolts are widely used, particularly in lifting equipment, machinery, and vehicles.

[0003] Chinese patent publication number CN221779813U discloses a knife corner bolt, wherein the knife corner bolt comprises: a bolt body, the bolt body having a connecting end and an insertion end, the connecting end being connected to the insertion end, and the connecting end and the insertion end being integrally formed, the connecting end having an assembly hole at one end away from the insertion end, and the assembly hole being in the shape of a frustum; and a connecting piece, one end of the connecting piece being threadedly connected to the assembly hole.

[0004] This utility model stabilizes the connection between the bolt body and the nut by providing an insertion rod. However, due to this structural design, the installation of the insertion rod requires the third insertion hole on the nut to be aligned with the hole on the bolt body, which is time-consuming to install. Summary of the Invention

[0005] Therefore, in order to solve the above problems, the present invention provides a knife corner bolt and a preparation process thereof, which solves the problem that the existing knife corner bolts are time-consuming to install due to design defects.

[0006] To achieve the above object, the present invention is achieved through the following technical solutions: A knife angle bolt comprises: a bolt, one end of the bolt is provided with a screw head, the other end of the bolt is provided with a reduced diameter section, the outer spacer ring of the reduced diameter section is provided with a plurality of protrusions and a plurality of grooves, adjacent protrusions are connected by the grooves, and one end of each groove is recessed inward to form a clamping portion; a nut, the nut and the bolt are connected by threads, the nut and the bolt are locked clockwise, one end of the nut is provided with a U-shaped groove, the opening of the U-shaped groove is provided on the inner side wall of the nut; a limiting member, the limiting member is provided in the U-shaped groove, both sides of the U-shaped groove protrude inward, the two side walls of the limiting member are recessed inward, the limiting member is a hollow structure, and the limiting member An opening is provided on the component; an arc-shaped piece, the arc-shaped piece is connected to the opening, one end of the arc-shaped piece is connected to the limit piece, the other end of the arc-shaped piece extends clockwise in an arc shape and cooperates with a clamping portion, and the extension direction of the arc-shaped piece is the same as the thread direction of the bolt; a gasket, the gasket is sleeved on the bolt, and a plurality of dividing lines are provided on the gasket, each of the dividing lines extends outward from the inner ring of the gasket, and a fold is obliquely provided between adjacent dividing lines, and the gasket is bent along each fold to form a folded piece, and the gasket includes a first gasket and a second gasket, and the inclination directions of the folds on the first gasket and the second gasket are opposite.

[0007] Furthermore, the nut is provided with a blocking piece at one end of the U-shaped groove, and the blocking piece is provided at the location where the arc-shaped piece is provided.

[0008] Furthermore, the height of the limiting member is greater than the depth of the U-shaped groove.

[0009] Furthermore, a plurality of fixing blocks are provided on one side of the first gasket, and a plurality of fixing grooves are provided on one end of the nut away from the U-shaped groove.

[0010] Furthermore, it also includes a disassembly component, which includes two curved arms, one end of the two curved arms is rotatably connected, the other end of the two curved arms is provided with a holding part, the two holding parts are arranged at intervals, and the adjacent sides of the two curved arms are provided with a corresponding number of positioning holes, and one end of each positioning hole is provided with an embedded piece.

[0011] Furthermore, the size of each positioning hole gradually decreases from one end where the two crank arms are connected to the other end.

[0012] Furthermore, the inner side wall of the limiting member protrudes from the inner side wall of the nut.

[0013] A process for preparing a corner bolt, used for preparing the above-mentioned corner bolt, comprises the following steps: S1. Cutting: Cut the raw material into long flake blanks of the same length; S2. Bending: bend the long sheet blank at equal distances to form three indentations at both ends and in the middle of the long sheet blank; S3. Folding: fold the long sheet of blank along the edges of the three indentations to form a hollow structure with an opening and an arc-shaped piece, thereby obtaining the limiting member.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a reduced diameter section provided at one end of the bolt and an arc-shaped piece provided at one end of the nut. When locked clockwise, the deformation of the arc-shaped piece is utilized to enable it to pass through the gap between the protrusion and the inner wall of the nut during the locking process, and rebound to its original position when the arc-shaped piece is in the groove position. After locking, the counterclockwise rotation of the nut is limited by the cooperation between the arc-shaped piece and the clamping portion, thereby having an anti-loosening effect without affecting the installation time.

[0015] 2. The present invention uses an oblique crease on the gasket to make the widths of the two sides of the folded piece formed by bending along the crease different. When locked clockwise, the smaller side of the folded piece on the second gasket will not hinder the larger side of the folded piece on the first gasket, so as to ensure that the folded pieces on the two gaskets continue to approach each other through elastic deformation in the locked state. After locking, since the creases on the first gasket and the second gasket are inclined in opposite directions, the folded piece on the first gasket cooperates with the folded piece on the second gasket to limit the counterclockwise rotation of the first gasket and the second gasket.

[0016] 3. The present invention forms three indentations at both ends and in the middle of the long sheet blank, and folds the long sheet blank along the edges of the three indentations to form a limiting member with an opening and an arc-shaped piece. Not only is the preparation cost low, but the formed limiting member can also be stably set in the U-shaped groove without the possibility of detachment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of an embodiment of the present invention; Figure 2 This is a schematic diagram of the U-shaped groove configuration structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the coordination structure between the arc-shaped piece and the clamping portion according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a position limiting member according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the fold arrangement structure of the first gasket and the second gasket according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the disassembly assembly structure of an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the baffle arrangement according to a preferred embodiment of the present invention; Figure 8 This is a schematic diagram of the indentation arrangement structure according to an embodiment of the present invention.

[0018] Explanation of Figure Numbers Bolt 1; screw head 11; reduced diameter section 12; protrusion 13; groove 14; retaining portion 15; Nut 2; U-shaped groove 21; baffle 22; fixing groove 23; Limiting member 3; opening 31; Arc piece 4; Gasket 5; dividing line 51; fold 52; folding piece 53; first gasket 54; second gasket 55; fixing block 56; Disassembly assembly 6; curved arm 61; grip portion 62; positioning hole 63; embedded piece 64; Long sheet blank 7; indentation 71. DETAILED DESCRIPTION

[0019] The following will describe the implementation methods of the present invention in detail with reference to specific embodiments, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Example

[0020] like Figures 1 to 8 As shown, a knife angle bolt comprises: a bolt 1, wherein one end of the bolt 1 is provided with a screw head 11, and the other end of the bolt 1 is provided with a reduced diameter section 12, and the outer spacer ring of the reduced diameter section 12 is provided with six protrusions 13 and six grooves 14, and the adjacent protrusions 13 are connected by the grooves 14, and one end of each groove 14 is recessed inward to form a clamping portion 15; a nut 2, wherein the nut 2 is connected to the bolt 1 through a thread, and the nut 2 and the bolt 1 are locked clockwise, and one end of the nut 2 is provided with a U-shaped groove 21, and the opening of the U-shaped groove 21 is provided on the inner side wall of the nut 2; a limiting member 3, wherein the limiting member 3 is provided in the U-shaped groove 21, and the two sides of the U-shaped groove 21 protrude inward, and the two side walls of the limiting member 3 are recessed inward, and the limiting member 3 is a hollow structure. An opening 31 is provided on the component 3; an arc-shaped piece 4, which is connected to the opening 31, one end of the arc-shaped piece 4 is connected to the limit component 3, and the other end of the arc-shaped piece 4 extends in a clockwise arc and cooperates with a clamping portion 15, and the extension direction of the arc-shaped piece 4 is the same as the thread direction of the bolt 1; a gasket 5, which is sleeved on the bolt 1, and is provided with six dividing lines 51 on the gasket 5, each of which extends outward from the inner circle of the gasket 5, and a fold 52 is obliquely provided between adjacent dividing lines 51, and the gasket 5 is bent along each fold 52 to form a folding piece 53, and the gasket 5 includes a first gasket 54 and a second gasket 55, and the inclination directions of the folds 52 on the first gasket 54 and the second gasket 55 are opposite.

[0021] Among them, the opening 31 on the limiting member 3 cooperates with the protrusions on both sides of the U-shaped groove 21 and the recesses on both side walls of the limiting member 3. After the limiting member 3 is placed in the U-shaped groove 21, the limiting member 3 will not move toward the inside of the nut 2, and the state is stable. When the nut 2 is not locked with the bolt 1, the limiting member 3 will not separate from the U-shaped groove 21.

[0022] The reduced diameter section 12 provided at one end of the bolt 1 and the arc-shaped piece 4 provided at one end of the nut 2, when locked clockwise, utilizes the deformation of the arc-shaped piece 4 to make it pass through the gap between the protrusion 13 and the inner wall of the nut 2 during the locking process, and rebounds and recovers when the arc-shaped piece 4 is in the groove 14 position. After locking, the counterclockwise rotation of the nut 2 is limited by the cooperation between the arc-shaped piece 4 and the clamping portion 15, which has an anti-loosening effect without affecting the installation time; the folded piece formed by bending along the folded line 52 is formed by the inclined folded line 52 on the washer 5. The widths of the two sides of 53 are different. When locked clockwise, the smaller side of the folding piece 53 on the second gasket 55 will not hinder the larger side of the folding piece 53 on the first gasket 54, so as to ensure that the folding pieces 53 on the two gaskets continue to approach each other through elastic deformation in the locked state. After locking, since the folds 52 on the first gasket 54 and the second gasket 55 are inclined in opposite directions, the folding piece 53 on the first gasket 54 cooperates with the folding piece 53 on the second gasket 55 to limit the counterclockwise rotation of the first gasket 54 and the second gasket 55.

[0023] The retaining portion 15 provided in the present invention is limited by the size of the bolt 1, so that the arc-shaped piece 4 is placed on the retaining portion 15 but is not in a locked state. When the torque of loosening the nut 2 is too large, the arc-shaped piece 4 and the retaining portion 15 are used alone, and there is a possibility of disengagement during the maintenance period of the bolt. Similarly, the first washer 54 and the second washer 55 are used alone, and there is also a possibility of disengagement. However, when the two are provided at the same time, the torque during loosening can be evenly distributed, ensuring that the bolt 1 and the nut 2 will not loosen during the maintenance period.

[0024] In other preferred embodiments, the nut 2 is provided with a baffle 22 at one end of the U-shaped groove 21, and the baffle 22 is provided at the location where the arc-shaped piece 4 is provided; the setting of the baffle 22 can prevent the limiting member 3 from falling out of the U-shaped groove 21 when the arc-shaped piece 4 is not deformed, and when the arc-shaped piece 4 cooperates with the clamping portion 15 to bulge and deform, the limiting member 3 is no longer blocked by the baffle 22 when it is taken out.

[0025] In other preferred embodiments, the height of the limiting member 3 is greater than the depth of the U-shaped groove 21 ; this arrangement makes it easy to remove the limiting member 3 from the U-shaped groove 21 during disassembly.

[0026] Three fixing blocks 56 are provided on one side of the first gasket 54, and six fixing grooves 23 are provided on the end of the nut 2 away from the U-shaped groove 21; the thread corrosion rate between the bolt 1 and the nut 2 is different in different usage scenarios. In order to avoid difficulty in disassembly after rusting, the three extra fixing grooves 23 can be used for injecting lubricant during disassembly, and can also be used for injecting thread locking agent during installation.

[0027] It also includes a disassembly component 6, which includes two curved arms 61, one end of the two curved arms 61 is rotatably connected, and the other end of the two curved arms 61 is provided with a holding portion 62, the two holding portions 62 are arranged at intervals, and the adjacent sides of the two curved arms 61 are provided with corresponding positioning holes 63, and one end of each positioning hole 63 is provided with an embedding piece 64. The arrangement of the two curved arms 61 is used to open the interval of the embedding piece 64 at the same position, and the embedding piece 64 can be embedded between the first gasket 54 and the second gasket 55 as the holding portion 62 is gripped, so that the folding piece 53 on the first gasket 54 and the folding piece 53 on the second gasket 55 are disengaged, and can be quickly disassembled without damaging the thread between the bolt 1 and the nut 2.

[0028] The size of each positioning hole 63 gradually decreases from one end where the two crank arms 61 are connected to the other end; the positioning hole 63 near the end where the crank arms 61 are connected has a larger size, corresponding to a larger size bolt, and is located near the end where the connection is made more labor-saving during disassembly.

[0029] The inner wall of the limiter 3 protrudes from the inner wall of the nut 2. This design can use the elasticity of the inner wall of the limiter 3 to press the limiter 3 into the U-shaped groove 21, and enable the inner wall of the limiter 3 to push out the arc-shaped piece 4 so that it cooperates with the clamping portion 15. The limiter 3 is connected to the inner wall of the nut 2 on the side of the inner wall where the opening 31 is not provided, to prevent the limiter from being pushed out of the U-shaped groove 21 when the bolt 1 and the nut 2 are tightened.

[0030] A process for preparing a corner bolt, used for preparing the above-mentioned corner bolt, comprises the following steps: S1, cutting: cutting the raw material into long sheet blanks 7 of the same length; S2, bending: bend the long sheet blank 7 at equal intervals to form three indentations 71 at both ends and in the middle of the long sheet blank; S3, folding: folding the long sheet blank 7 along the edges of the three indentations 71 to form a hollow structure with an opening 31 and an arc-shaped piece 4, thereby obtaining the limiting member 3.

[0031] By forming three indentations 71 at both ends and in the middle of the long sheet blank 7, and folding the long sheet blank 7 along the edges of the three indentations 71, a limiting member 3 with an opening 71 and an arc-shaped piece is formed. Not only is the preparation cost low, but the formed limiting member 3 can be stably set in the U-shaped groove 21 and will not fall off easily.

[0032] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. A knife angle bolt, characterized in that: include: A bolt (1), wherein one end of the bolt (1) is provided with a screw head (11), the other end of the bolt (1) is provided with a reduced diameter section (12), a spacer ring outside the reduced diameter section (12) is provided with a plurality of protrusions (13) and a plurality of grooves (14), adjacent protrusions (13) are connected via the grooves (14), and one end of each groove (14) is recessed inwardly to form a clamping portion (15); A nut (2), wherein the nut (2) is connected to the bolt (1) by means of a thread, the nut (2) and the bolt (1) are locked clockwise, a U-shaped groove (21) is provided at one end of the nut (2), and an opening (31) of the U-shaped groove (21) is provided on an inner side wall of the nut (2); A limiting member (3), the limiting member (3) being arranged in the U-shaped groove (21), the two sides of the U-shaped groove (21) protruding inwards, the two side walls of the limiting member (3) being recessed inwards, the limiting member (3) being a hollow structure, and the limiting member (3) being provided with an opening (31); An arc-shaped piece (4), one end of the arc-shaped piece (4) being connected to the limiting member (3), the other end of the arc-shaped piece (4) extending in a clockwise arc shape and cooperating with a clamping portion (15), and the extending direction of the arc-shaped piece (4) being the same as the thread direction of the bolt (1); A gasket (5), the gasket (5) being sleeved on the bolt (1), the gasket (5) being provided with a plurality of dividing lines (51), each of the dividing lines (51) extending outward from the inner circle of the gasket (5), a folding mark (52) being obliquely provided between adjacent dividing lines (51), the gasket (5) being bent along each of the folding marks (52) to form a folding sheet (53), the gasket (5) comprising a first gasket (54) and a second gasket (55), the folding marks (52) on the first gasket (54) and the second gasket (55) being inclined in opposite directions.

2. A knife angle bolt according to claim 1, characterized in that: The nut (2) is provided with a blocking piece (22) at one end of the U-shaped groove (21), and the blocking piece (22) is arranged at the location where the arc-shaped piece (4) is arranged.

3. A knife angle bolt according to claim 1, characterized in that: The height of the limiting member (3) is greater than the depth of the U-shaped groove (21).

4. The blade angle bolt according to claim 1, characterized in that: A plurality of fixing blocks (56) are provided on one side of the first gasket (54), and a plurality of fixing grooves (23) are provided on one end of the nut (2) away from the U-shaped groove (21).

5. The blade angle bolt according to claim 1, characterized in that: The device also comprises a disassembly assembly (6), wherein the disassembly assembly (6) comprises two curved arms (61), one end of the two curved arms (61) being rotatably connected, the other end of the two curved arms (61) being provided with a holding portion (62), the two holding portions (62) being arranged at intervals, a plurality of corresponding positioning holes (63) being provided on adjacent sides of the two curved arms (61), and one end of each positioning hole (63) being provided with an embedding sheet (64).

6. A knife angle bolt according to claim 5, characterized in that: The size of each positioning hole (63) gradually decreases from one end where the two curved arms (61) are connected to the other end.

7. The blade angle bolt according to claim 1, characterized in that: The inner side wall of the limiting member (3) protrudes from the inner side wall of the nut (2).

8. A process for preparing a corner bolt, used for preparing a corner bolt according to any one of claims 1 to 7, characterized in that: The steps include: S1, cutting: cutting the raw material into long flake blanks (7) of the same length; S2, bending: the long sheet blank (7) is bent at equal intervals to form three indentations (71) at both ends and in the middle of the long sheet blank (7); S3, folding: folding the long sheet-shaped blank (7) along the edges of the three indentations (71) to form a hollow structure with an opening (31) and an arc-shaped sheet (4), thereby obtaining the stopper (3).

Images