Bolt anti-loosening structure, measuring tool and stamping mechanism

Abstract

The invention relates to the technical field of wind driven generators, and aims to solve the technical problem that no anti-loosening function exists. In order to solve the technical problem, the invention provides a bolt anti-loosening structure, a measuring tool and a stamping mechanism. The method comprises the steps that a to-be-installed part is installed; unloading a to-be-mounted part; the bolt comprises a screw and a nut; the upper pressing piece comprises an upper horizontal plate and an upper vertical plate which are arranged in an L shape; an upper through hole is formed in the upper horizontal plate; the lower fastener comprises a first lower horizontal plate, a lower vertical plate and a second lower horizontal plate which are connected in sequence; a lower through hole is formed in the first lower horizontal plate; wherein the screw penetrates through the upper to-be-mounted piece and the lower to-be-mounted piece and is connected with the nut; the upper through hole sleeves the head of the screw, and the upper vertical plate covers the edges of the upper to-be-mounted part and the lower to-be-mounted part; the lower through hole is sleeved on the nut; the lower vertical plate abuts against the outer wall of the upper vertical plate, and the second lower horizontal plate wraps the top of the upper horizontal plate. The bolt is prevented from being loosened in the long-time use process.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine equipment, and in particular to a bolt anti-loosening structure, a measuring tool, and a stamping mechanism. Background Art

[0002] The connection between many components of a wind turbine needs to be realized through bolts; for example, the connection between the nacelle and the tower, etc. The bolts in the prior art do not have an anti-loosening function, so there are the following risks during long-term use: ‌Equipment failure and safety hazards‌: Bolt loosening will cause the clamping force between the connecting components to weaken, which may lead to equipment vibration, increased noise, and even equipment failure. Long-term loosening may also cause component damage and may trigger safety accidents in severe cases.

[0003] ‌Performance degradation and efficiency reduction‌: Loose bolts will affect the overall performance of the equipment, resulting in a decrease in work efficiency and an increase in maintenance costs. For example, loose bolts may cause mechanical components to move smoothly, affecting the normal operation of the equipment.

[0004] ‌‌Economic losses‌: Bolt loosening will not only cause equipment downtime for maintenance, but also increase maintenance costs and downtime losses. In some cases, loosening may lead to major accidents, causing greater economic losses.

[0005] Therefore, it is necessary to design a bolt with an anti-loosening function for the installation of a wind turbine to prevent equipment failures and safety hazards; avoid performance and efficiency degradation; and avoid economic losses. Summary of the Invention

[0006] To this end, the technical problem to be solved by the present invention is to overcome the above problems existing in the prior art.

[0007] To solve the above technical problems, the present invention provides a bolt anti-loosening structure, including: An upper component to be installed; A lower component to be installed; A bolt, including a screw and a nut; An upper pressing member, including an upper horizontal plate and an upper vertical plate arranged in an L shape; an upper through hole is provided on the upper horizontal plate; A lower fastening member, including a first lower horizontal plate, a lower vertical plate, and a second lower horizontal plate that are sequentially connected into a U-shaped structure; a lower through hole is provided on the first lower horizontal plate; Wherein, the screw passes through the upper component to be installed, the lower component to be installed and is connected to the nut; the upper through hole is sleeved on the head of the screw, and the upper vertical plate covers the edges of the upper component to be installed and the lower component to be installed; the lower through hole is sleeved on the nut; the lower vertical plate abuts against the outer wall of the upper vertical plate, and the second lower horizontal plate covers the top of the upper horizontal plate.

[0008] In an embodiment of the present invention, the lower fastener and the upper pressing member are prefabricated into an L-shaped structure; after the screw passes through the upper member to be installed, the lower member to be installed and is connected to the nut, the upper through hole is sleeved on the head of the screw, and after the lower through hole is sleeved on the nut, the free end of the lower fastener is bent so that the lower fastener forms a U-shaped structure.

[0009] The present invention also provides a measuring tool for measuring the distance L1 from the axis of the screw to the edge of the upper member to be installed, the distance L2 from the axis of the nut to the outer wall of the upper vertical plate, the graphic orientation of the upper through hole, and the graphic orientation of the lower through hole in any of the above embodiments; the measuring tool includes: A gauge, which is an L-shaped structure, and the gauge includes a horizontal section and a vertical section; a long hole extending in the X direction is provided on the horizontal section, and the vertical section abuts against the edge of the upper member to be installed or the outer wall of the upper vertical plate; An axis measuring member, which is internally provided with a profiling hole consistent with the outer shape of the screw head and the outer shape of the nut; the axis measuring member rotates and slides in the long hole along the X direction; A base, and the base abuts against the lower part of the gauge; A fastening assembly for fixing the gauge, the axis measuring member and the base.

[0010] In an embodiment of the present invention, the axis measuring member includes a main body and an end connected to the top end of the main body; the main body is located in the long hole, and the end is placed on the top of the gauge.

[0011] In an embodiment of the present invention, a plurality of connecting ears are evenly distributed along the circumferential direction on the outer wall of the end; the fastening assembly includes a first fastener; the connecting ears are connected to the gauge through the first fastener.

[0012] In an embodiment of the present invention, the fastening assembly further includes a second fastener for connecting and fixing the axis measuring member and the base.

[0013] The present invention also provides a stamping mechanism for processing the upper through hole and the lower through hole in any of the above embodiments after being measured by the measuring tool in any of the above embodiments; the stamping mechanism includes: An upper die assembly, which includes an upper fixing block, an upper punch rotatably connected to the bottom of the upper fixing block, and a locking member; the locking member is used to lock and fix the upper fixing block and the upper punch; Lower die assembly, including a lower die, a limiting member, a locking member and a clamping member; the lower die is provided with a communication hole, and the top of the lower die is provided with a profiling groove communicating with the communication hole; the limiting member is slidably connected to one side of the lower die along the X direction and is connected to the lower die through the locking member; a gauge, an upper pressing member and a lower fastening member are respectively arranged on the upper surface of the lower die and are respectively connected to the lower die through the clamping member; the vertical section of the gauge, the upper vertical plate of the upper pressing member, and the lower vertical plate of the lower fastening member are abutted against one side of the limiting member; the base is located in the profiling groove, and the axis measuring member is located in the communication hole.

[0014] In an embodiment of the present invention, the lower die is further provided with a limiting groove communicating above the profiling groove, and the limiting groove is used for limiting the gauge, the upper pressing member and the lower fastening member.

[0015] In an embodiment of the present invention, the limiting member is of a U-shaped structure; the limiting member includes a limiting side and connecting sides vertically connected to both ends of the limiting side; the limiting side is used for limiting the gauge, the upper pressing member and the lower fastening member; the two connecting sides are respectively connected to the lower die through the locking member.

[0016] In an embodiment of the present invention, the vertical section of the gauge, the upper vertical plate of the upper pressing member, and the lower vertical plate of the lower fastening member are abutted against the inner side of the limiting member; the thicknesses of the vertical section, the upper vertical plate and the lower vertical plate are equal.

[0017] The above technical solution of the present invention has the following advantages compared with the prior art: The bolt loosening prevention structure, measuring tool and stamping mechanism of the present invention. In this embodiment, the upper pressing member and the lower fastening member can bite tightly with each other, so as to relatively fix the screw and nut on the upper to-be-installed part and the lower to-be-installed part, thereby avoiding the loosening of the bolt during long-term use, further ensuring the stable reliability of the connection between the upper to-be-installed part and the lower to-be-installed part, reducing the accident rate, and reducing the maintenance cost, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the present invention easier to be clearly understood, the following further describes the present invention in detail according to the specific embodiments of the present invention and in conjunction with the drawings, wherein: Figure 1 is a schematic structural diagram of a bolt loosening prevention structure in a preferred embodiment of the present invention; Figure 2 is a schematic structural diagram of a measuring tool in a preferred embodiment of the present invention; Figure 3 is Figure 2 a top view of the measuring tool; Figure 4 is Figure 3 the A-A cross-sectional view of; Figure 5 is adopted Figure 2Schematic diagram of measurement using a measuring tool (screw); Figure 6 is a schematic diagram of measurement using Figure 2 a measuring tool (nut); Figure 7 is a schematic diagram of the structure of the upper die assembly in a stamping mechanism in a preferred embodiment of the present invention; Figure 8 is Figure 7 a sectional view taken along line B of Figure 9 is a schematic diagram of the structure of the lower die assembly in a stamping mechanism in a preferred embodiment of the present invention; Figure 10 is Figure 9 a top view of a lower die assembly in a stamping mechanism shown in Figure 11 is Figure 10 a sectional view taken along line C-C of Figure 12 is a schematic diagram of placing a measuring tool in the lower die assembly; Figure 13 is a schematic diagram of performing upper through-hole punching on the Figure 1 upper pressing part in a stamping mechanism; Figure 14 is a schematic diagram of performing lower through-hole punching on the Figure 1 lower fastening part in a stamping mechanism; Explanation of reference numerals in the drawings of the specification: 100, mounting assembly; 110, upper part to be mounted; 120, lower part to be mounted; 130, edge; 140, bolt; 141, screw; 142, nut; 200, upper pressing part; 210, upper horizontal plate; 211, upper through-hole; 220, upper vertical plate; 300, lower fastening part; 310, first lower horizontal plate; 311, lower through-hole; 320, lower vertical plate; 330, second lower horizontal plate; 400, gauge; 410, horizontal section; 411, long slot; 420, vertical section; 500, axis measuring part; 510, profiling hole; 520, main body; 530, end part; 540, connecting ear; 600, base; 700, fastening assembly; 710, first fastener; 720, second fastener; 800, upper die assembly; 810, upper fixing block; 820, upper punch; 830, locking part; 900, lower die assembly; 910, lower die; 911, communication hole; 912, profiling groove; 913, limit groove; 920, limiting member; 921, limiting side; 922, connecting side; 930, locking member; 940, clamping member. Detailed implementation

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it, but the embodiments cited are not intended to limit the present invention.

[0020] Refer to Figures 1 to 14 As shown, an embodiment of the present invention provides a bolt loosening prevention structure, including an installation assembly 100, an upper pressing member 200, and a lower fastening member 300.

[0021] The installation assembly 100 includes an upper member to be installed 110, a lower member to be installed 120, and a bolt 140. The bolt 140 includes a screw 141 and a nut 142; The upper pressing member 200 includes an upper horizontal plate 210 and an upper vertical plate 220 arranged in an L shape; an upper through hole 211 is provided on the upper horizontal plate 210; The lower fastening member 300 includes a first lower horizontal plate 310, a lower vertical plate 320, and a second lower horizontal plate 330 that are sequentially connected into a U-shaped structure; a lower through hole 311 is provided on the first lower horizontal plate 310; Among them, the screw 141 passes through the upper member to be installed 110 and the lower member to be installed 120 and is connected to the nut 142; the upper through hole 211 is sleeved on the head of the screw 141, and the upper vertical plate 220 covers the edge 130 of the upper member to be installed 110 and the lower member to be installed 120; the lower through hole 311 is sleeved on the nut 142; the lower vertical plate 320 abuts against the outer wall of the upper vertical plate 220, and the second lower horizontal plate 330 covers the top of the upper horizontal plate 210.

[0022] Specifically, after the screw 141, the upper component to be installed 110, the lower component to be installed 120, and the nut 142 are installed, the upper pressing member 200 is sleeved on the head of the screw 141. The upper vertical plate 220 of the upper pressing member 200 covers the edges of the upper component to be installed 110 and the lower component to be installed 120. Then, the lower through hole 311 of the lower fastening member 300 is sleeved on the nut 142, and the lower vertical plate 320 of the lower fastening member 300 covers the outer wall of the upper vertical plate 220. Finally, the second lower horizontal plate 330 of the lower fastening member 300 covers the top of the upper horizontal plate 210. It can be seen that the upper pressing member 200 and the lower fastening member 300 of this embodiment can bite tightly with each other, so as to relatively fix the screw 141 and the nut 142 on the upper component to be installed 110 and the lower component to be installed 120, thereby preventing the bolt 140 from loosening during long-term use, further ensuring the stable reliability of the connection between the upper component to be installed 110 and the lower component to be installed 120, reducing the accident rate, and reducing the maintenance cost, etc.

[0023] In some embodiments, both the upper pressing member 200 and the lower fastening member 300 are straight plate-shaped structures. After the screw 141, the upper component to be installed 110, the lower component to be installed 120, and the nut 142 are connected, first, the upper pressing member 200 is sleeved on the head of the screw 141, and then the construction worker manually bends the other end of the upper pressing member 200, so that the upper pressing member 200 is in an L shape. Then, the lower fastening member 300 is sleeved on the nut 142, and the construction worker manually bends the other end of the lower fastening member 300 on both sides, so that the lower fastening member 300 is in a U shape. This embodiment requires on-site manual bending, so that the anti-loosening structure can be directly formed according to the on-site situation.

[0024] However, for the anti-loosening structure formed by on-site bending in the above embodiments, on the one hand, the construction efficiency is low; on the other hand, the consistency is poor, resulting in a relatively large difference in the anti-loosening effect. To solve this problem, further, both the lower fastening member 300 and the upper pressing member 200 of this embodiment are prefabricated into L-shaped structures. After the screw 141 passes through the upper component to be installed 110 and the lower component to be installed 120 and is connected to the nut 142, the upper through hole 211 is sleeved on the head of the screw 141. At this time, the upper vertical plate 220 of the pressing member 200 has covered the edges of the upper component to be installed 110 and the lower component to be installed 120. Then, after the lower through hole 311 is sleeved on the nut 142, at this time, the lower vertical plate 320 of the lower fastening member 300 covers the outer wall of the upper vertical plate 220, and the free end of the upper vertical plate 220 is bent to cover the top of the upper horizontal plate 210, so that the lower fastening member 300 forms a U-shaped structure. That is to say, in this embodiment, the upper pressing member 200 and the lower fastening member 300 are directly produced into L-shaped structures in the factory, and then the lower fastening member 300 is bent into a U-shaped structure on site. This reduces the on-site bending operation and improves the efficiency. In addition, during the production process, the consistency of the lower fastening member 300 and the consistency of the upper pressing member 200 can be fully ensured, thus ensuring the consistency of the anti-loosening effect.

[0025] However, in the embodiment where the above-mentioned lower fastener 300 and upper pressing member 200 are prefabricated into an L-shaped structure in the factory, during the installation process of passing the screw 141 through the upper member to be installed 110, the lower member to be installed 120 and connecting them with the nut 142, it is necessary to rotate the screw 141 and the nut 142 to achieve a fixed connection. However, after the installation is completed, the orientation of the hexagons of the screw 141 and the nut 142 (for example, the head of the hexagon screw 141, the hexagon nut 142) is uncertain. Therefore, after the upper pressing member 200 is sleeved on the head of the screw 141, how to ensure that the upper vertical plate 220 is still parallel and in contact with the edges 130 of the upper member to be installed 110 and the lower member to be installed 120 is a difficult problem to solve. Similarly, after the lower fastener 300 is sleeved on the nut 142, how to ensure that the lower vertical plate 320 is still parallel and in contact with the outer wall of the upper vertical plate 220 is a difficult problem to solve.

[0026] To solve this problem, our company has conducted research and can design a measuring tool and a stamping mechanism. After the screw 141, the upper member to be installed 110, the lower member to be installed 120, and the nut 142 are installed. The following parameters are measured by the measuring tool: the distance L1 from the axis of the screw 141 to the edge 130 of the upper member to be installed 110, the distance L2 from the axis of the nut 142 to the outer wall of the upper vertical plate 220, the graphic orientation of the upper through-hole 211, and the graphic orientation of the lower through-hole 311. Then, the distances L1 and L2 are transferred to the stamping mechanism, and the stamping mechanism punches holes while ensuring the dimensions of the distances L1 and L2, and ensures that the graphic orientations of the punched holes (the upper through-hole 211, the lower through-hole 311) are respectively consistent with the graphic orientations of the head of the screw 141 and the nut 142. The specific structure is as follows.

[0027] Refer to Figures 1 to 14 As shown, the measuring tool is used to measure the above parameters: the distance L1 from the axis of the screw 141 to the edge of the upper member to be installed 110, the distance L2 from the axis of the nut 142 to the outer wall of the upper vertical plate 220, the graphic orientation of the upper through-hole 211, and the graphic orientation of the lower through-hole 311. The measuring tool includes a gauge 400, an axis measuring member 500, a base 600, and a fastening assembly 700.

[0028] The gauge 400 has an L-shaped structure. The gauge 400 includes a horizontal section 410 and a vertical section 420; a long hole 411 extending in the X direction is provided on the horizontal section 410, and the vertical section 420 abuts against the edge 130 of the upper member to be installed 110 and the lower member to be installed 120 (for measuring the screw) or the outer wall of the upper vertical plate 220 (for measuring the nut); The internal of the axis measuring member 500 is provided with a profiling hole 510 that is consistent with the outer shape of the head of the screw 141 and the outer shape of the nut 142 (for example, if the head of the screw 141 and the nut 142 are hexagonal, then the profiling hole 510 is hexagonal; another example, if the head of the screw 141 and the nut 142 are quadrilateral, then the profiling hole 510 is quadrilateral). The axis measuring member 500 rotates in the long slot 411 and slides along the X direction; The base 600 is sleeved outside the axis measuring member 500, and the base 600 abuts against the lower part of the gauge 400; the base 600 and the fastening assembly 700 realize the pre-fixation of the gauge 400 and the axis measuring member 500, so that the gauge 400 and the axis measuring member 500 are pre-connected together, avoiding the situation that the gauge 400 and the axis measuring member 500 are separated during the measurement process, resulting in measurement failure and affecting the measurement error.

[0029] The fastening assembly 700 is used to fix the gauge 400, the axis measuring member 500 and the base 600.

[0030] Specifically, in this embodiment, the axis measuring member 500 is rotated and sleeved on the head of the screw 141 or the nut 142, and then the gauge 400 is slid so that the inner wall of the vertical section 420 of the gauge 400 abuts against the edge 130 of the upper to-be-installed part 110 and the lower to-be-installed part 120 or the outer wall of the upper vertical plate 220, and then the gauge 400 and the axis measuring member 500 are fixed by the fastening assembly 700, that is, the measurement is completed. Among them, when measuring the screw 141, the distance from the inner wall of the vertical section 420 to the axis of the screw 141 is the above-mentioned distance L1; when measuring the nut 142, the distance from the inner wall of the vertical section 420 to the axis of the nut 142 is the above-mentioned distance L2. By rotating the axis measuring member 500 and sleeving it on the head of the screw 141 or the nut 142, the graphic orientation of the head of the screw 141 and the nut 142 can be measured, and then the punching can be carried out according to this orientation graph. It can be seen that this embodiment can measure the above-mentioned distance L1, distance L2, the graphic orientation of the head of the screw 141 and the graphic orientation of the nut 142, with simple structure, low cost and high measurement efficiency.

[0031] Furthermore, the axis measuring member 500 includes a main body 520 and an end portion 530 connected to the top end of the main body 520. The main body 520 passes through the long slot 411 and is connected to the base 600, and the end portion 530 is placed on the top of the gauge 400, that is to say, the gauge 400 is clamped between the end portion 530 and the base 600. In some embodiments, the main body 520 and the end portion 530 are coaxial cylinders, and the diameter of the end portion 530 is greater than the diameter of the main body 520. Specifically, this embodiment is convenient for avoiding the separation of the axis measuring member 500 and the gauge 400 when pulling the gauge 400 to measure the distance L1 and the distance L2, thus making the operation more convenient and improving the measurement efficiency.

[0032] Further, a plurality of connecting lugs 540 (at least three) are circumferentially and uniformly distributed on the outer wall of the end portion 530. The fastening assembly 700 includes a first fastener 710; the connecting lug 540 is connected to the gauge 400 by the first fastener 710. In some embodiments, the first fastener 710 is a jacking screw 141. A threaded hole is provided on the connecting lug 540, and the jacking screw 141 is connected to the threaded hole and abuts against the surface of the gauge 400. Specifically, in this embodiment, the plurality of connecting lugs 540 are used to fix the axis measuring member 500 to the gauge 400 when the axis measuring member 500 rotates to any angle.

[0033] Further, the fastening assembly 700 further includes a second fastener 720 for connecting and fixing the axis measuring member 500 and the base 600. In some embodiments, the second fastener 720 is a snap ring, and the main body 520 of the axis measuring member 500 is connected to the base 600 by the snap ring. Specifically, the second fastener 720 in this embodiment can further connect and fix the base 600 and the axis measuring member 500, and prevent the axis measuring member 500 from moving upward to affect the measurement accuracy and measurement efficiency.

[0034] In order to facilitate the sliding of the gauge 400 and prevent the gauge 400 from detaching from the axis measuring member 500, a guiding member can be provided between the gauge 400 and the axis measuring member 500. In some embodiments, the guiding member includes a protrusion and a guiding chute. A protrusion is provided on one of the side walls of the long hole 411 and the outer wall of the main body 520 of the axis measuring member 500, and a guiding chute is provided on the other.

[0035] Refer to Figures 1 to 14 As shown, after being measured by the measuring tool, the stamping mechanism processes the upper through hole 211 and the lower through hole 311 of the anti-loosening structure of the bolt 140. The stamping mechanism includes an upper die assembly 800 and a lower die assembly 900.

[0036] The upper die assembly 800 includes an upper fixing block 810, an upper punch 820 rotatably connected to the bottom of the upper fixing block 810, and a locking member 830; the locking member 830 is used to lock and fix the upper fixing block 810 and the upper punch 820. The shape of the upper punch 820 is the same as that of the head of the screw 141 and the nut 142. In some embodiments, a connecting shaft is provided at the bottom of the upper fixing block 810, and the upper punch 820 is rotatably connected to the connecting shaft by a bearing. In some embodiments, the locking member 830 is a locking screw 141; a threaded hole penetrating through its wall body is provided on the side wall of the upper punch 820, and the locking screw 141 passes through the threaded hole and abuts against the outer wall of the connecting shaft.

[0037] The lower die assembly 900 includes a lower die 910, a stopper 920, a locking member 930, and a clamping member 940. In some embodiments, both the locking member 930 and the clamping member 940 are adjustable quick compressors. The lower die 910 is provided with a communication hole 911, and a profiling groove 912 communicating with the communication hole 911 is provided at the top of the lower die 910; the stopper 920 is slidably connected to one side (for example, the left side) of the lower die 910 in the X direction, and the stopper 920 is fixedly connected to the lower die 910 through the locking member 930. The gauge 400, the upper pressing member 200, and the lower fastening member 300 are respectively placed on the upper surface of the lower die 910, and the three are respectively connected to the lower die 910 through the clamping member 940. The base 600 is located in the profiling groove 912, and the axis measuring member 500 is located in the communication hole 911; the vertical section 420 of the gauge 400, the upper vertical plate 220 of the upper pressing member 200, and the lower vertical plate 320 of the lower fastening member 300 are abutted against one side (for example, the outer side; or the inner side, taking the inner side as an example in this application) of the stopper 920.

[0038] Specifically, after the measurement is completed, the measuring tool is placed on the lower die assembly 900. The axis measuring member 500 of the measuring tool is placed in the communication hole 911, the base 600 is located in the profiling groove 912, the horizontal section 410 of the gauge 400 is placed on the lower die 910, and the vertical section 420 hangs on one side of the lower die 910, and the measuring tool is fixed to the lower die through the clamping member 940. Then slide the stopper 920 so that the stopper 920 abuts against one side of the vertical section 420, and then lock the locking member 930 so that the stopper 920 is fixed to the lower die 910. The upper punch 820 moves downwards and approaches the axis measuring member 500 of the measuring tool. The operator manually rotates the upper punch 820 so that the upper punch 820 can enter the profiling hole 510 of the axis measuring member 500 after descending, and then locks and fixes the upper punch 820 to the upper fixing block 810, and finally moves the upper punch 820 upwards. Thus, the measured distance L1, the graphic orientation or distance L2 of the upper through hole 211, and the graphic orientation of the lower through hole 311 have been transferred to the lower die 910. Then the measuring tool is removed from the lower die 910 (keeping the stopper 920 fixed to the lower die 910 during the removal process), and the upper pressing member 200 or the lower fastening member 300 is placed on the lower die 910, ensuring that the upper vertical plate 220 (or the lower vertical plate 320 of the lower fastening member 300) of the upper pressing member 200 abuts tightly against the stopper 920, and then start the upper die assembly 800 to make the upper punch 820 move downwards to punch the upper through hole 211 (or the lower through hole 311). It can be seen that the structure of this embodiment is simple and compact, and can quickly punch the lower through hole 311 and the upper through hole 211 on site, ensuring that the graphic orientation of the upper through hole 211 is consistent with that of the screw 141, the distance L1, the graphic orientation of the lower through hole 311 is consistent with that of the nut 142 and the distance L2, thus ensuring the anti-loosening effect, high punching efficiency and ensuring the processing size.

[0039] Further, the vertical section 420 of the gauge 400, the upper vertical plate 220 of the upper pressing member 200, and the lower vertical plate 320 of the lower fastening member 300 are abutted against the inner side of the limiting member 920; the thicknesses of the vertical section 420, the upper vertical plate 220, and the lower vertical plate 320 are equal.

[0040] Specifically, in this embodiment, the upper vertical plate 220 and the lower vertical plate 320 of the lower fastening member 300 are abutted against the inner side of the limiting member 920. In this way, the limiting member 920 abuts against the outer sides of the upper vertical plate 220 and the lower vertical plate 320 of the lower fastening member 300 to further limit them, preventing the upper vertical plate 220 and the lower vertical plate 320 of the lower fastening member 300 from moving in the X direction.

[0041] Further, a limiting groove 913 communicating above the profiling groove 912 is further provided on the lower mold 910. The limiting groove 913 is used to limit the gauge 400, the upper pressing member 200, or the lower fastening member 300. Specifically, in this embodiment, the limiting groove 913 is used to initially limit the gauge 400, the upper pressing member 200, and the lower fastening member 300. Then, on the basis of the initial limitation, the gauge 400, the upper pressing member 200, and the lower fastening member 300 are fixedly connected to the lower mold 910 through the locking member 930 or the clamping member 940, making the operation more convenient and fast.

[0042] Further, the limiting member 920 is of a U-shaped structure; the limiting member 920 includes a limiting side 921 and connecting sides 922 vertically connected to both ends of the limiting side 921. The limiting side 921 is used to limit the gauge 400, the upper pressing member 200, and the lower fastening member 300; the two connecting sides 922 are respectively connected to the lower mold 910 through the locking member 930. Since the limiting side 921 can slide relative to the lower mold 910 in the X direction and needs to be fixed to the lower mold 910 through the locking member 930 after sliding. The conventional structure is to place the locking member 930 on the upper and lower sides or the left and right sides of the limiting side 921. This will cause interference with the up and down stamping or the movement of the limiting side 921. Specifically, on the one hand, in this embodiment, the connecting side 922 sets the connection structure between the limiting member 920 and the lower mold 910 on the front and rear sides of the lower mold 910, so as not to cause interference with other movements or components; on the other hand, the connecting side 922 of the present application can play a guiding role when the limiting side 921 slides, improving the smoothness and stability when the limiting member 920 slides.

[0043] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present invention.

Claims

1. A bolt loosening prevention structure, characterized in that: Comprising: Upper component to be installed; Lower component to be installed; Bolts, including screws and nuts; Upper pressing component, including an upper horizontal plate and an upper vertical plate arranged in an L shape; an upper through hole is provided on the upper horizontal plate; Lower fastening component, including a first lower horizontal plate, a lower vertical plate, and a second lower horizontal plate sequentially connected into a U-shaped structure; a lower through hole is provided on the first lower horizontal plate; Wherein, the screw passes through the upper component to be installed, the lower component to be installed and is connected to the nut; the upper through hole is sleeved on the head of the screw, and the upper vertical plate covers the edges of the upper component to be installed and the lower component to be installed; the lower through hole is sleeved on the nut; the lower vertical plate abuts against the outer wall of the upper vertical plate, and the second lower horizontal plate covers the top of the upper horizontal plate.

2. The bolt loosening prevention structure according to claim 1, characterized in that: The lower fastening component and the upper pressing component are prefabricated into an L-shaped structure; after the screw passes through the upper component to be installed, the lower component to be installed and is connected to the nut, and the upper through hole is sleeved on the head of the screw and the lower through hole is sleeved on the nut, the free end of the lower fastening component is bent so that the lower fastening component forms a U-shaped structure.

3. A measuring tool, characterized in that: For measuring, in any one of claims 1 to 2, the distance L1 from the axis of the screw to the edge of the upper component to be installed, the distance L2 from the axis of the nut to the outer wall of the upper vertical plate, the graphic orientation of the upper through hole, and the graphic orientation of the lower through hole; the measuring tool includes: A gauge, in an L-shaped structure, the gauge includes a horizontal section and a vertical section; a long hole extending in the X direction is provided on the horizontal section, and the vertical section abuts against the edge of the upper component to be installed or the outer wall of the upper vertical plate; Axis measuring member, internally provided with a profiling hole consistent with the outer shape of the screw head and the outer shape of the nut; the axis measuring member rotates and slides in the long hole along the X direction; Base, the base abuts against the lower part of the gauge; Fastening assembly, used to fix the gauge, the axis measuring member and the base.

4. The measuring tool according to claim 3, characterized in that: The axis measuring member includes a main body and an end connected to the top of the main body; the main body is located in the long hole, and the end is placed on the top of the gauge.

5. The measuring tool according to claim 4, characterized in that: A plurality of connecting ears are evenly distributed along the circumferential direction on the outer wall of the end; the fastening assembly includes a first fastener; the connecting ears are connected to the gauge through the first fastener.

6. The measuring tool according to claim 3, characterized in that: The fastening assembly further includes a second fastener for connecting and fixing the axis measuring member and the base.

7. A stamping mechanism, characterized in that: After measurement by the measuring tool according to any one of claims 3 to 6, the processing of the upper through hole and the lower through hole according to any one of claims 1 to 2; the stamping mechanism includes: Upper die assembly, including an upper fixing block, an upper punch rotatably connected to the bottom of the upper fixing block, and a locking member; the locking member is used to lock and fix the upper fixing block and the upper punch; The lower die assembly includes a lower die, a limiting member, a locking member, and a clamping member; the lower die is provided with a communication hole, and a profiling groove communicating with the communication hole is provided at the top of the lower die; the limiting member is slidably connected to one side of the lower die in the X direction and is connected to the lower die through the locking member; the gauge, the upper pressing member, and the lower fastening member are respectively placed on the upper surface of the lower die and are respectively connected to the lower die through the clamping member; the vertical section of the gauge, the upper vertical plate of the upper pressing member, and the lower vertical plate of the lower fastening member abut against one side of the limiting member; the base is located in the profiling groove, and the axis measuring member is located in the communication hole.

8. The stamping mechanism according to claim 7, characterized in that: The lower die is further provided with a limiting groove communicating above the profiling groove, and the limiting groove is used for limiting the gauge, the upper pressing member, and the lower fastening member.

9. The stamping mechanism according to claim 7, wherein: The limiting member is of a U-shaped structure; the limiting member includes a limiting side and connecting sides vertically connected to both ends of the limiting side; the limiting side is used for limiting the gauge, the upper pressing member, and the lower fastening member; the two connecting sides are respectively connected to the lower die through the locking member.

10. The stamping mechanism according to claim 7, wherein: The vertical section of the gauge, the upper vertical plate of the upper pressing member, and the lower vertical plate of the lower fastening member abut against the inner side of the limiting member; the thicknesses of the vertical section, the upper vertical plate, and the lower vertical plate are equal.

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