Metal shaft with limiting function

Abstract

The utility model discloses a metal axle with limiting function belongs to metal axle technical field, including positioning axle body, the outer wall of positioning axle body is equipped with limiting sliding slot, and the one side circumference of limiting sliding slot extends and has the positioning groove, the adjusting axle body is equipped in the outside of positioning axle body, and the inner wall fixed connection of adjusting axle body has the locating block, the locating block rotation is engaged to the inside of positioning groove, the one side of adjusting axle body is equipped with the storage hole and second threaded hole and is equipped with the countersunk bolt in the inside screw thread connection of second threaded hole, and the countersunk bolt abuts in the inside of limiting sliding slot. Through the establishment of positioning groove, make locating block abut in the inside of positioning groove, through its rigid abutment limit, improve its circumference load capacity and axial load capacity, make the device adjustable and improve its transmission stability.

Description

Technical Field

[0001] This utility model relates to the field of metal shaft technology, specifically a metal shaft with a limiting function. Background Technology

[0002] Metal shafts are core components in mechanical engineering. They are metal parts used for mechanical transmission and support, usually made of metal materials such as carbon steel and alloy steel. They are mostly cylindrical in shape, and the diameter of each section can be different. They are mainly used to transmit motion, torque or bending moment, and to support rotating parts.

[0003] An investigation revealed that a utility model patent (publication number: CN221033588U) discloses a metal shaft with a limiting function, comprising a metal shaft body, a stop block on one side of the metal shaft body, a sliding sleeve on the surface of the metal shaft body, a fixing block fixedly mounted on the surface of the sliding sleeve, and a fixing mechanism inside the fixing block. The limiting block fixedly mounted on the surface of the sliding sleeve allows for adjustment of the overall length of the device by moving the sliding sleeve, facilitating connection. By rotating the screw, the moving block moves downwards, causing the surface of the rubber block to contact the bottom surface of the groove, thus fixing the sliding sleeve. The limiting block facilitates connection of the metal shaft body to other components. When connecting other components, rotating the stop block removes it, rotating the screw moves the moving block upwards, and the sliding sleeve can be removed. Then, a sliding sleeve with the required limiting block can be replaced and fixed, resulting in greater applicability.

[0004] Although the aforementioned patent achieves length adjustment through a sliding connection between the metal body and the sliding sleeve, its fixing structure uses a screw abutment method for length adjustment and fixing. Its friction can only support small axial loads and cannot support large axial loads. When subjected to a large axial load, its sliding positioning will slip and shift, thus affecting its stability in use.

[0005] Therefore, this utility model provides a metal shaft with a limiting function to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved This invention provides a metal shaft with a limiting function, which aims to solve the problems mentioned in the background art.

[0007] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a metal shaft with a limiting function, comprising a positioning shaft body, wherein a limiting groove is formed on the outer wall of the positioning shaft body, and a positioning groove extends circumferentially on one side of the limiting groove. An adjusting shaft is sleeved outside a positioning shaft, and a positioning block is fixedly connected to the inner wall of the adjusting shaft. The positioning block is rotated and engaged inside the positioning groove. A receiving hole and a second threaded hole are provided on the side of the adjusting shaft near the positioning block. A countersunk bolt is threaded into the second threaded hole and abuts against the inside of the limiting slide groove.

[0008] As a preferred technical solution of this application, the inner diameter of the positioning shaft is equal to the outer diameter of the adjusting shaft, and a tensioning component is fixedly connected to the end of the adjusting shaft away from the positioning shaft.

[0009] As a preferred technical solution of this application, the adjacent receiving holes and the adjacent limiting slides are distributed at the same angle, and each limiting slide has two receiving holes and a second threaded hole.

[0010] As a preferred technical solution of this application, the receiving hole and the second threaded hole are coaxially distributed, the diameter of the receiving hole is larger than the diameter of the second threaded hole, and the depth of the receiving hole is equal to the depth of the second threaded hole.

[0011] As a preferred technical solution of this application, the volume of the positioning groove is equal to the volume of the positioning block, the cross section of the positioning block is the same as the cross section of the limiting slide groove, and the positioning block is slidably connected between the limiting slide grooves.

[0012] As a preferred technical solution of this application, the width of the limiting groove is equal to the diameter of the countersunk bolt, the depth of the limiting groove is less than the depth of the second threaded hole, and the height of the countersunk bolt is less than the sum of the depths of the receiving hole and the second threaded hole.

[0013] As a preferred technical solution of this application, the outer wall of the positioning shaft is provided with scale lines, and the spacing between the positioning blocks in the same row is an integer multiple of the spacing between adjacent positioning slots.

[0014] As a preferred technical solution of this application, the end of the adjusting shaft away from the positioning shaft is provided with a first threaded hole, the tightening component includes a positioning sleeve, the positioning sleeve is provided with a positioning hole corresponding to the first threaded hole, and a bolt passes through the positioning hole and is connected to the first threaded hole.

[0015] As a preferred technical solution of this application, the positioning sleeve is provided with an expansion flange ring inside, the inner wall of the positioning sleeve is inclined, the outer wall of the expansion flange ring is also inclined, and the expansion flange ring is an open structure.

[0016] As a preferred technical solution of this application, the end of the positioning sleeve away from the adjusting shaft is provided with a threaded groove, and the threaded groove is located between adjacent positioning holes at the end of the positioning sleeve. A high-strength bolt passes through the expansion flange ring and is connected to the threaded groove.

[0017] (III) Beneficial Effects The beneficial effects of this application are as follows: 1. This utility model, through the opening of the positioning groove, allows the positioning block to abut against the inside of the positioning groove. Through its rigid abutment and limitation, the axial load force of the positioning shaft and the adjusting shaft of the device is improved. At the same time, with the setting of the countersunk bolt, the countersunk bolt is tightened on the inner wall of the limiting slide groove to abut and fix the positioning block, preventing the positioning block from rotating in a circle, further improving its circumferential load force. This allows the metal shaft to achieve adjustability while ensuring the stability of its transmission of motion, torque or bending moment.

[0018] 2. This utility model, through the setting of the expansion clamping component, enables the adjusting shaft to better adapt to the shaft for expansion clamping. At the same time, its adjustable structure facilitates the clamping and fixing of shafts of different diameters, thereby improving the adaptability and flexibility of the docking between the metal shaft and the shaft body. Furthermore, by changing the model of the expansion clamping component, the metal shaft can meet the auxiliary docking requirements of other components. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present utility model; Figure 2 This is a schematic diagram of the axial cross-sectional structure of this utility model; Figure 3 For the present utility model Figure 2 A magnified structural diagram of A in the middle; Figure 4 This is a partial cross-sectional view of the adjusting shaft of this utility model; Figure 5 This is a schematic diagram of the overall structure of the positioning shaft of this utility model; Figure 6 This is a partial cross-sectional structural diagram of the positioning block of this utility model in abutment state.

[0020] In the picture: 1. Positioning shaft; 11. Limiting slide groove; 12. Positioning groove; 2. Adjusting shaft; 21. First threaded hole; 22. Receiving hole; 23. Second threaded hole; 24. Positioning block; 25. Countersunk bolt; 3. Expansion assembly; 31. Positioning sleeve; 32. Expansion flange ring; 33. High-strength bolt. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-6 As shown, this utility model provides a metal shaft with a limiting function, including a positioning shaft body 1. The outer wall of the positioning shaft body 1 has a limiting groove 11, and a positioning groove 12 extends circumferentially on one side of the limiting groove 11. An adjusting shaft body 2 is sleeved outside the positioning shaft body 1, and a positioning block 24 is fixedly connected to the inner wall of the adjusting shaft body 2. The positioning block 24 is rotatably engaged with the inside of the positioning groove 12. A receiving hole 22 and a second threaded hole 23 are provided on the side of the adjusting shaft body 2 near the positioning block 24. A countersunk bolt 25 is threaded into the second threaded hole 23, and the countersunk bolt 25 abuts against the limiting groove 11. Inside the positioning groove 12, the positioning block 24 is rotated to the appropriate position to adjust the length of the positioning shaft 1 and the adjusting shaft 2. At the same time, the countersunk bolt 25 is adjusted by screwing it so that it abuts against the inner wall of the limiting slide groove 11, and the positioning block 24 is circumferentially abutted and positioned to prevent the positioning block 24 from rotating circumferentially. This ensures the stability of the positioning block 24 when it is engaged inside the positioning groove 12, thereby improving the stability of the rotational transmission of the positioning shaft 1 and the adjusting shaft 2. At the same time, the abutting positioning of the positioning groove 12 and the positioning block 24 allows the positioning shaft 1 and the adjusting shaft 2 to withstand higher axial loads.

[0023] Furthermore, the inner diameter of the positioning shaft 1 is equal to the outer diameter of the adjusting shaft 2. The end of the adjusting shaft 2 away from the positioning shaft 1 is fixedly connected to the tensioning component 3. The tensioning component 3 facilitates the docking and installation of the external shaft. At the same time, by replacing different models of tensioning components 3, it is convenient to install and fix different parts.

[0024] Furthermore, the adjacent receiving holes 22 and adjacent limiting grooves 11 are distributed at the same angle. Each limiting groove 11 has two receiving holes 22 and a second threaded hole 23. The receiving holes 22 and the second threaded hole 23 are coaxially distributed. The diameter of the receiving hole 22 is larger than the diameter of the second threaded hole 23, and the depth of the receiving hole 22 is equal to the depth of the second threaded hole 23. The width of the limiting groove 11 is equal to the diameter of the countersunk bolt 25, and the depth of the limiting groove 11 is less than the depth of the second threaded hole 23. The height of the countersunk bolt 25 is less than the sum of the depths of the receiving holes 22 and the second threaded hole 23. Through the coaxial cooperation of the receiving holes 22 and the second threaded hole 23, the countersunk bolt 25 threadedly connected to the second threaded hole 23 can be spirally adjusted inside the second threaded hole 23 and the receiving hole 22, preventing the countersunk bolt 25 from extending on the outer wall of the adjusting shaft 2, thus completing the implicit storage of the countersunk bolt 25.

[0025] Furthermore, the volume of the positioning groove 12 is equal to the volume of the positioning block 24. The cross-section of the positioning block 24 is the same as the cross-section of the limiting slide groove 11, and the positioning block 24 is slidably connected between the limiting slide groove 11. Through the limiting sliding connection between the positioning block 24 and the limiting slide groove 11, it is convenient to adjust the connection length of the positioning shaft 1 and the adjusting shaft 2, thereby improving the length adjustment and the installation flexibility. Moreover, the positioning groove 12 and the positioning block 24 are the same size, which makes the contact between the positioning block 24 and the positioning groove 12 more stable, ensuring the firmness of the contact between the positioning block 24 and the positioning groove 12, and avoiding the existence of gaps between the positioning block 24 and the positioning groove 12 that could cause axial displacement.

[0026] Furthermore, the outer wall of the positioning shaft 1 is provided with scale lines, and the spacing between the positioning blocks 24 in the same row is an integer multiple of the spacing between adjacent positioning grooves 12. By setting the scale lines on the outer wall of the positioning shaft 1, it is convenient to accurately adjust the extension length of the positioning shaft 1 and the adjusting shaft 2, and at the same time, it is convenient to align the positioning blocks 24 with the positioning grooves 12, thereby improving the convenience of adjusting the length of the positioning shaft 1 and the adjusting shaft 2.

[0027] Furthermore, the end of the adjusting shaft 2 away from the positioning shaft 1 is provided with a first threaded hole 21. The expansion assembly 3 includes a positioning sleeve 31. The positioning sleeve 31 is provided with a positioning hole corresponding to the first threaded hole 21, and a bolt passes through the positioning hole and is connected to the first threaded hole 21. An expansion flange ring 32 is fitted inside the positioning sleeve 31. The inner wall of the positioning sleeve 31 is inclined, and the outer wall of the expansion flange ring 32 is also inclined. The expansion flange ring 32 is an open structure. The end of the positioning sleeve 31 away from the adjusting shaft 2 is provided with a threaded groove, and the threaded groove is located between the adjacent positioning holes at the end of the positioning sleeve 31. A high-strength bolt 33 passes through the flange of the expansion flange ring 32 and is connected to the threaded groove. By tightening the high-strength bolt 33, the expansion flange ring 32 and the positioning sleeve 31 are brought into contact. Then, the expansion flange ring 32 is contracted to complete the expansion clamping of the shaft.

[0028] Working principle: First, adjust the extension length of the positioning shaft 1 and adjusting shaft 2 according to their usage length. By rotating the countersunk bolt 25, the countersunk bolt 25 is housed inside the second threaded hole 23 and the receiving hole 22. At this time, rotate the adjusting shaft 2 so that the positioning block 24 is inside the limiting slide groove 11. Then, axially displace the adjusting shaft 2 to adjust the extension length of the positioning shaft 1 and adjusting shaft 2. After adjusting to the appropriate position, rotate the adjusting shaft 2 so that the positioning block 24 engages and abuts against the inside of the positioning groove 12. Further rotate the countersunk bolt 25 so that it abuts against the inner wall of the limiting slide groove 11, thus limiting the rotation of the positioning block 24 and ensuring the stability and firmness of the adjustment of the positioning shaft 1 and adjusting shaft 2. At this time, the shaft can be connected and fixed to the external shaft through the tightening component 3 to achieve the docking transmission of the shaft.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A metal shaft with a stop function, characterized by: It includes a positioning shaft (1), the outer wall of which is provided with a limiting groove (11), and a positioning groove (12) extends circumferentially on one side of the limiting groove (11). Adjusting shaft (2), the adjusting shaft (2) is sleeved on the outside of positioning shaft (1), and a positioning block (24) is fixedly connected to the inner wall of the adjusting shaft (2). The positioning block (24) is rotated and engaged inside the positioning groove (12). The adjusting shaft (2) has a receiving hole (22) and a second threaded hole (23) on the side near the positioning block (24), and a countersunk bolt (25) is threaded inside the second threaded hole (23). The countersunk bolt (25) abuts against the inside of the limiting slide groove (11).

2. The metal shaft with a limiting function according to claim 1, characterized in that: The inner diameter of the positioning shaft (1) is equal to the outer diameter of the adjusting shaft (2), and the end of the adjusting shaft (2) away from the positioning shaft (1) is fixedly connected to a tensioning component (3).

3. The metal shaft with a limiting function according to claim 2, characterized in that: The adjacent receiving holes (22) and the adjacent limiting grooves (11) have the same distribution angle, and each limiting groove (11) has two receiving holes (22) and a second threaded hole (23).

4. The metal shaft with a limiting function according to claim 3, characterized in that: The receiving hole (22) and the second threaded hole (23) are coaxially distributed. The diameter of the receiving hole (22) is greater than the diameter of the second threaded hole (23), and the depth of the receiving hole (22) is equal to the depth of the second threaded hole (23).

5. The metal shaft with a limiting function according to claim 1, characterized in that: The volume of the positioning groove (12) is equal to the volume of the positioning block (24). The cross section of the positioning block (24) is the same as the cross section of the limiting slide groove (11), and the positioning block (24) is slidably connected between the limiting slide grooves (11).

6. The metal shaft with a limiting function according to claim 5, characterized in that: The width of the limiting groove (11) is equal to the diameter of the countersunk bolt (25), the depth of the limiting groove (11) is less than the depth of the second threaded hole (23), and the height of the countersunk bolt (25) is less than the sum of the depths of the receiving hole (22) and the second threaded hole (23).

7. The metal shaft with a limiting function according to claim 5, characterized in that: The outer wall of the positioning shaft (1) is provided with scale lines, and the spacing between the positioning blocks (24) in the same row is an integer multiple of the spacing between the adjacent positioning grooves (12).

8. The metal shaft with a limiting function according to claim 3, characterized in that: The adjusting shaft (2) has a first threaded hole (21) at one end away from the positioning shaft (1). The tightening assembly (3) includes a positioning sleeve (31). The positioning sleeve (31) has a positioning hole corresponding to the first threaded hole (21), and a bolt passes through the positioning hole and is connected to the first threaded hole (21).

9. A metal shaft with a limiting function according to claim 8, characterized in that: The positioning sleeve (31) is fitted with an expansion flange ring (32). The inner wall of the positioning sleeve (31) is inclined, and the outer wall of the expansion flange ring (32) is also inclined. The expansion flange ring (32) is an open structure.

10. The metal shaft with a limiting function according to claim 9, characterized in that: The positioning sleeve (31) has a threaded groove at one end away from the adjusting shaft (2), and the threaded groove is located between adjacent positioning holes at the end of the positioning sleeve (31). A high-strength bolt (33) passes through the flange of the expansion flange ring (32) and is connected to the threaded groove.

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