Torque transmission structure of bolt tensioning piece
By using electroplating to fix hard particles in the torsion transfer structure of bolt tensioning parts, the problem of the traditional torsion transfer method generating shear force during load impact is solved, and a longer service life and stronger torsion transfer capability is achieved.
Patent Information
- Application Number
- CN202421702078.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-18
AI Technical Summary
The traditional torsion transfer method is prone to generate shear force when the load impacts, shortening the service life of the bolt and reducing its torsion transfer ability.
The bolt tensioning member torque transfer structure is adopted, and hard particles are fixed by electroplating on both sides of the friction plate, and the hard particles are pressed into the connecting surface of the torque transfer member to increase friction and reduce the shear force encountered by the fastening bolts.
It improves the service life and torque transfer capability of the fastening bolts, enhances resistance to load impact, and avoids early damage caused by shear forces.
Smart Images
Figure CN222924840U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical transmission, and particularly to a torque transmission structure of a bolt tensioning member. Background Technique
[0002] At present, traditional torque transmission methods often rely only on simple bolt fastening. In this way, the two connecting surfaces are mainly in direct contact through machined surfaces. Due to the low friction coefficient, large shear forces are likely to be generated when dealing with load impacts, thereby shortening the service life of the bolts and reducing their torque transmission capacity.
[0003] Therefore, it is very necessary to propose a torque transmission structure of a bolt tensioning member to solve the above problems. Content of the Utility Model
[0004] (I) Technical Problems to be Solved
[0005] The purpose of the utility model is to provide a torque transmission structure of a bolt tensioning member to solve the problem that the existing torque transmission connection method shortens the service life of the bolts and reduces their torque transmission capacity when shear forces are generated, as mentioned in the above background technique.
[0006] (II) Technical Solutions
[0007] To achieve the above purposes, the utility model is realized through the following technical solutions: A torque transmission structure of a bolt tensioning member, comprising:
[0008] A friction plate, the friction plate includes a metal substrate and hard particles. Electroplated layers are provided on both sides of the metal substrate. A part of the hard particles is embedded in the electroplated layer, and the other part of the hard particles protrudes from the electroplated layer to form a friction-increasing surface;
[0009] Torque transmission members, there are two torque transmission members, and the two torque transmission members are respectively located on both sides of the friction plate;
[0010] A fastening bolt, bolt holes for passing the fastening bolt are provided at corresponding positions of the friction plate and the torque transmission members, and the fastening bolt is used to fix the two torque transmission members and press the hard particles protruding from the electroplated layer into the torque transmission members.
[0011] Preferably, the hardness of the hard particles is greater than the hardness of the torque transmission members.
[0012] Preferably, the shape of the friction plate is adapted to the shape of the connection surface of the torque transmission member.
[0013] Preferably, it further includes a pre-positioning member. A pre-positioning blind hole is provided on one side of one of the torque transmission members close to the friction plate, a pre-positioning through hole is provided at the position of the friction plate corresponding to the pre-positioning blind hole, and one end of the pre-positioning member passes through the friction plate through the pre-positioning through hole and is inserted into the pre-positioning blind hole.
[0014] Preferably, there are at least two of the pre-positioning members.
[0015] Preferably, the pre-positioning member is a sleeve. A through groove is axially formed in the wall of the sleeve. Chamfers are formed at both ends of the sleeve. The diameters of the pre-positioning through hole and the pre-positioning blind hole are the same.
[0016] Preferably, the pre-positioning member is a silica gel cap. The silica gel cap has a limiting portion, a supporting portion and a positioning portion arranged in sequence. The diameters of the pre-positioning through hole and the pre-positioning blind hole are the same. The diameter of the supporting portion is adapted to the diameter of the pre-positioning through hole. The diameters of the limiting portion and the positioning portion are both larger than the diameter of the pre-positioning through hole.
[0017] (III) Beneficial effects
[0018] Compared with the prior art, the present utility model provides a torque transmission structure of a bolt tensioning member, which has the following beneficial effects:
[0019] 1. In this torque transmission structure of the bolt tensioning member, hard particles are fixed on both sides of the friction plate by electroplating. The hard particles are stably fixed and not easy to fall off. After connection, the hard particles on both sides of the friction plate are respectively pressed into the connection surfaces of the two torque transmission members, thereby increasing the friction force between the two torque transmission members, reducing the shear force received by the fastening bolt, and improving the service life of the fastening bolt, solving the problems that the shear force generated during load impact reduces the life of the fastening bolt and the torque transmission capacity.
[0020] 2. In this torque transmission structure of the bolt tensioning member, by providing a pre-positioning member, the friction plate is pre-mounted on the connection surface of one of the torque transmission members through the pre-positioning member, avoiding the problem of misalignment of the friction plate relative to the connection surface of the torque transmission member during installation, resulting in installation errors; at the same time, avoiding the problem that the fastening bolt acts on the friction plate to cause deformation when there is an error, affecting its friction increasing effect and reusability. Description of the drawings
[0021] Figure 1 is a cross-sectional view of the friction plate of the present utility model;
[0022] Figure 2 is a sectional view of the structure of the present utility model;
[0023] Figure 3 is a three-dimensional view of the structure of the present utility model;
[0024] Figure 4 is a three-dimensional view of the friction plate of the present utility model pre-positioned by a sleeve;
[0025] Figure 5 is a three-dimensional view of the sleeve of the present utility model;
[0026] Figure 6 This is a schematic cross-sectional view of the friction plate of the present utility model pre-positioned by a silica gel cap;
[0027] Figure 7 This is a schematic view of the flattened state of the silica gel cap of the present utility model;
[0028] Figure 8 This is a schematic cross-sectional view of the silica gel cap of the present utility model.
[0029] In the figure: 1, friction plate; 2, torque transmission member; 4, metal substrate; 5, plating layer; 6, hard particles; 7, fastening bolt; 8, bolt hole; 9, sleeve; 10, chamfer; 11, pre-positioning blind hole; 12, silica gel cap; 13, pre-positioning through hole; 14, limiting portion; 15, supporting portion; 16, positioning portion; 17, through groove. Specific embodiments
[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.
[0031] Please refer to Figures 1 - 3 As shown, a torque transmission structure of a bolt tensioning member includes a friction plate 1, a torque transmission member 2, and a fastening bolt 7. The friction plate 1 includes a metal substrate 4 and hard particles 6. Plating layers 5 are provided on both sides of the metal substrate 4. A part of the hard particles 6 is embedded in the plating layer 5, and the other part of the hard particles 6 protrudes from the plating layer 5; there are two torque transmission members 2, and the two torque transmission members 2 are respectively located on both sides of the friction plate 1; bolt holes 8 for passing the fastening bolt 7 are provided at corresponding positions of the friction plate 1 and the torque transmission member 2, and the fastening bolt 7 is used to fix the two torque transmission members 2 and press the hard particles 6 protruding from the plating layer 5 into the torque transmission member 2.
[0032] Specifically, during the electroplating process of the plating layer 5, hard particles 6 are added. As the plating layer 5 thickens, a part of the hard particles 6 is coated by the plating layer 5, thereby realizing the embedding of the hard particles 6; the thickness of the metal substrate 4 is not less than 0.1 mm, the particle size of the hard particles 6 is not less than 5 μm, and the thickness of the plating layer 5 is not less than 1 μm.
[0033] When connecting the two torque transmission members 2, the friction plate 1 is placed between the two torque transmission members 2, the fastening bolt 7 is passed through the bolt hole 8 and tightened. The two torque transmission members 2 apply force to squeeze the friction plate 1. Under the action of the pressure, the hard particles 6 protruding from the outside of the plating layer 5 of the friction plate 1 are pressed into the torque transmission member 2, thereby increasing the friction force of the connection surface of the two torque transmission members 2, reducing the shear force received by the fastening bolt 7, and improving the service life of the fastening bolt 7 to cope with the problem that the life of the fastening bolt 7 is reduced and the torque transmission capacity is reduced due to the shear force generated during the load impact.
[0034] Specifically, the hardness of the hard particles 6 is greater than that of the torque transmission member 2, so as to ensure that the hard particles 6 can be pressed into the torque transmission member 2 when being pressed, so as to achieve the effect of increasing friction.
[0035] In order to avoid the friction plate 1 affecting the connection area of the two torque transmission members 2, the shape of the friction plate 1 is adapted to the shape of the connection surface of the torque transmission member 2.
[0036] Please refer to Figures 4 - 8 As shown, in some embodiments, a pre-positioning member is further included. A pre-positioning blind hole 11 is provided on one side of the torque transmission member 2 close to the friction plate 1. A pre-positioning through hole 13 is provided at a position corresponding to the pre-positioning blind hole 11 on the friction plate 1. One end of the pre-positioning member passes through the friction plate 1 through the pre-positioning through hole 13 and is inserted into the pre-positioning blind hole 11.
[0037] By providing the pre-positioning member, the friction plate 1 can be pre-mounted on the connection surface of one of the torque transmission members 2, avoiding the problem that the friction plate 1 is misaligned relative to the connection surface of the torque transmission member 2 during installation, resulting in installation errors. Under the action of the pre-positioning member, the bolt holes 8 on the friction plate 1 and the torque transmission member 2 are aligned, avoiding the situation that when there is an error, the inserted fastening bolt 7 acts on the friction plate 1 to cause deformation, affecting its repeated use.
[0038] In order to avoid the friction plate 1 rotating after being pre-mounted through the pre-positioning member, there are at least two pre-positioning members.
[0039] Please refer to Figures 4 - 5 As shown, in some embodiments, the pre-positioning member is a sleeve 9. A through groove 17 is provided on the wall of the sleeve 9 along its axis. Chamfers 10 are provided at both ends of the sleeve 9. The diameters of the pre-positioning through hole 13 and the pre-positioning blind hole 11 are the same. Preferably, the outer diameter of the sleeve 9 is slightly larger than the diameter of the pre-positioning blind hole 11. By providing the chamfers 10, the sleeve 9 can be inserted into the pre-positioning blind hole 11. By providing the through groove 17, it can generate elastic deformation and fit with the inner walls of the pre-positioning through hole 13 and the pre-positioning blind hole 11 under the action of its own elastic force, avoiding loosening.
[0040] During connection, one end of the sleeve 9 is inserted into the pre-positioning blind hole 11, then the friction plate 1 is installed on the other end of the sleeve 9 through the pre-positioning through hole 13, and the friction plate 1 is made to fit with the torque transmission member 2. Then, the two torque transmission members 2 are fixed by the fastening bolt 7. Under the action of the other torque transmission member 2, the sleeve 9 is pressed into the pre-positioning blind hole 11.
[0041] Please refer to Figures 5 - 8As shown, in some embodiments, the pre-positioning member is a silicone cap 12. The silicone cap 12 has a limiting portion 14, a supporting portion 15, and a positioning portion 16 arranged in sequence. The diameters of the pre-positioning through hole 13 and the pre-positioning blind hole 11 are the same. The diameter of the supporting portion 15 is adapted to the diameter of the pre-positioning through hole 13. The diameters of both the limiting portion 14 and the positioning portion 16 are larger than the diameter of the pre-positioning through hole 13. Specifically, the thickness of the silicone cap 12 is ≤ 5 mm, and the diameter is 1.2 to 5 times the diameter of the pre-positioning through hole 13. The material is made of soft heat-resistant silicone so that it will not affect the pressing of the hard particles 6 into the torque transmission member 2 after being deformed under pressure.
[0042] During connection, place the friction plate 1 on the connection surface of the torque transmission member 2, and then pass the positioning portion 16 of the silicone cap 12 through the friction plate 1 through the pre-positioning through hole 13 and press it into the pre-positioning blind hole 11, so that the limiting portion 14 fits with the friction plate 1. The positioning portion 16 is elastically deformed under the limitation of the pre-positioning blind hole 11, thereby increasing the friction force and preventing the silicone cap 12 from falling off. Under the limitation of the silicone cap 12, pre-assemble the friction plate 1 on the connection surface of one of the torque transmission members 2, and then fix the two torque transmission members 2 with the fastening bolts 7. The two torque transmission members 2 press the middle part of the limiting portion 14 into the pre-positioning blind hole 11 and flatten the edge of the limiting portion 14. Preferably, a pre-positioning blind hole 11 is provided on the connection surface of one of the torque transmission members 2, and a groove for accommodating the limiting portion 14 is provided at a position corresponding to the pre-positioning blind hole 11 on the connection surface of the other torque transmission member 2.
[0043] This torque transmission structure is applicable to torque transmission members connected by bolts and is used to increase the torque transmission stability of single or multiple bolts and the bolt shear resistance.
[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A torque transmission structure of a bolt tensioner, characterized in that: include: A friction plate (1), the friction plate (1) comprising a metal substrate (4) and hard particles (6), the metal substrate (4) having electroplating layers (5) on both sides, a portion of the hard particles (6) embedded in the electroplating layers (5), and another portion of the hard particles (6) protruding from the electroplating layers (5) to form a friction-increasing surface; A torque transmission member (2), wherein there are two torque transmission members (2), and the two torque transmission members (2) are respectively located on both sides of the friction plate (1); A fastening bolt (7), wherein bolt holes (8) for inserting the fastening bolt (7) are provided at corresponding positions of the friction plate (1) and the torque transmission member (2), and the fastening bolt (7) is used to fix the two torque transmission members (2) and to press the hard particles (6) protruding from the electroplating layer (5) into the torque transmission member (2).
2. A bolt tensioning member torque transmission structure according to claim 1, characterized in that: The hardness of the hard particles (6) is greater than the hardness of the torque transmission member (2).
3. A torque transmission structure of a bolt tensioner according to claim 1, characterized in that: The shape of the friction plate (1) is adapted to the shape of the connecting surface of the torque transmission member (2).
4. A bolt tensioning member torque transmission structure according to claim 1, characterized in that: It also includes a pre-positioning member, wherein a pre-positioning blind hole (11) is provided on one side of the torque transmission member (2) close to the friction plate (1), a pre-positioning through hole (13) is provided on the friction plate (1) at a position corresponding to the pre-positioning blind hole (11), and one end of the pre-positioning member passes through the friction plate (1) through the pre-positioning through hole (13) and is inserted into the pre-positioning blind hole (11).
5. A torque transmission structure of a bolt tensioner according to claim 4, characterized in that: There are at least two pre-positioning members.
6. A bolt tensioning member torque transmission structure according to claim 4, characterized in that: The pre-positioning member is a sleeve (9), a through groove (17) is provided on the wall of the sleeve (9) along its axial direction, chamfers (10) are provided at both ends of the sleeve (9), and the pre-positioning through hole (13) and the pre-positioning blind hole (11) have the same diameter.
7. A bolt tensioning member torque transmission structure according to claim 4, characterized in that: The pre-positioning member is a silicone cap (12), the silicone cap (12) having a limiting portion (14), a supporting portion (15) and a positioning portion (16) arranged in sequence, the pre-positioning through hole (13) and the pre-positioning blind hole (11) having the same diameter, the supporting portion (15) having a diameter that matches the pre-positioning through hole (13), and the limiting portion (14) and the positioning portion (16) having diameters that are greater than the diameter of the pre-positioning through hole (13).