Pre-tightening type nut seat

Abstract

The utility model discloses a pre-tightening type nut seat which comprises two nut seat bodies, a plurality of elastic telescopic connecting pieces are distributed on the peripheries of the inner sides of the two nut seat bodies and used for providing reverse elastic support, and a linear transmission assembly is further arranged on the upper middle portion between the two nut seat bodies and used for driving the two nut seat bodies to rotate. The two nut seat bodies are arranged on the base and used for adjusting the distance between the two nut seat bodies so as to apply axial pre-tightening force, first mounting holes are formed in the two sides of the top of each nut seat body, and a plurality of second mounting holes are formed in the outer side of each nut seat body in a circumferential array mode. According to the pre-tightening type nut seat, through cooperation of the double nut seats, the linear transmission assembly and the elastic telescopic connecting piece, the pre-tightening force can be adjusted, the distance between the double nut seats can also be adjusted, the requirements of different working conditions are easily met, and the application range is wide.

Description

Technical Field

[0001] This utility model relates to the field of mechanical assembly technology, specifically a pre-tightening nut seat. Background Technology

[0002] In mechanical assembly and engineering applications, nut seats are widely used in various mechanical equipment as an important connecting and fixing component. Traditional nut seats are usually directly fixed to nuts using bolts or screws. Although this can achieve basic connection functions, it has the following problems in practical applications: traditional nut seats cannot be pre-tightened as needed during assembly, causing some trouble in actual work. At the same time, the fixed structure of traditional nut seats cannot be flexibly adjusted according to actual needs, making it difficult to meet the assembly requirements under different working conditions. Utility Model Content

[0003] The purpose of this utility model is to overcome or at least partially solve the above problems by proposing a pre-tightening nut seat.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a pre-tightening nut seat, comprising two nut seat bodies, with multiple elastic telescopic connectors distributed around the inner sides of the two nut seat bodies to provide reverse elastic support; a linear transmission assembly is also provided in the upper middle part between the two nut seat bodies to adjust the distance between the two nut seat bodies to apply axial pre-tightening force; mounting holes I are provided on both sides of the top of each nut seat body, and multiple mounting holes II are arranged in a circular array on the outer side of each nut seat body.

[0005] In a preferred embodiment, the elastic telescopic connector includes a sleeve, a round rod, a limiting head, and a spring. The round rod is inserted into both sides of the sleeve. The outer end of the round rod is connected to the nut seat body, and the inner end of the round rod is provided with a limiting head that is adapted to the inner cavity of the sleeve. The inner sides of the two limiting heads are provided with springs.

[0006] In a preferred embodiment, a plurality of connecting holes are distributed around the outer side of the nut seat body, and a portion of the inner wall of the connecting hole is threaded. A portion of the outer wall of the round rod is threaded, and the thread of the outer wall of the round rod is screwed into the thread of the inner wall of the connecting hole. The outer wall of the round rod is also interference-fitted with an external hexagonal sleeve.

[0007] In a preferred embodiment, the outer end of the round rod is further provided with a threaded hole, and the outer side wall of the nut seat body is further provided with an inner groove corresponding to the first connecting hole. An internal hexagon bolt is inserted into the outer side of the first connecting hole, and the end of the internal hexagon bolt is screwed into the threaded hole at the outer end of the round rod. The head of the internal hexagon bolt is embedded in the inner groove of the first connecting hole.

[0008] In a preferred embodiment, the linear drive assembly includes a threaded sleeve and a hexagonal socket screw that is threadedly engaged with it. The threaded sleeve is mounted to one of the nut seat bodies, and the hexagonal socket screw is rotatably connected to the other nut seat body.

[0009] In a preferred embodiment, a second connecting hole is provided on the upper outer side of the nut seat body connected to the internal hexagonal screw, and an inner groove is provided on the outer side of the nut seat body at a position corresponding to the second connecting hole. A bearing is provided in the inner groove at the second connecting hole, and the head of the internal hexagonal screw is embedded in the inner groove at the second connecting hole and connected to the inner ring of the bearing.

[0010] Compared with the prior art, this utility model provides a preloadable nut seat. Through the cooperation of double nut seats, linear transmission components and elastic telescopic connectors, it can not only adjust the preload, but also adjust the distance between the double nut seats, which can easily meet the needs of different working conditions and has a wide range of applications. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a three-dimensional structural diagram of the nut seat body of this utility model;

[0013] Figure 3 This is a three-dimensional structural diagram of the elastic telescopic connector of this utility model.

[0014] In the diagram: 1. Nut seat body; 2. Mounting hole one; 3. Mounting hole two; 4. Connecting hole one; 5. Connecting hole two; 6. Round rod; 7. Sleeve; 8. Limiting head; 9. Spring; 10. External hexagonal sleeve; 11. Internal hexagonal bolt; 12. Threaded sleeve; 13. Internal hexagonal screw. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings.

[0016] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this description, those skilled in the art can make creative modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0017] This utility model provides a pre-tightening nut seat, which solves the technical problems in the prior art. The overall concept is as follows:

[0018] Example 1:

[0019] Please see Figures 1-3A preloadable nut seat includes two nut seat bodies 1. Multiple elastic telescopic connectors are distributed around the inner sides of the two nut seat bodies 1 to provide reverse elastic support. A linear transmission assembly is also provided in the upper middle part between the two nut seat bodies 1 to adjust the distance between the two nut seat bodies 1 to apply axial preload. Mounting holes 2 are provided on both sides of the top of the nut seat body 1 for connecting with other components. Multiple mounting holes 3 are arranged in a circular array on the outer side of the nut seat body 1 for connecting the nut to the nut seat body 1.

[0020] In specific implementation, the elastic telescopic connector includes a sleeve 7, a round rod 6, a limiting head 8, and a spring 9. The round rod 6 is inserted into both sides of the sleeve 7. The outer end of the round rod 6 is connected to the nut seat body 1, and the inner end of the round rod 6 is provided with a limiting head 8 that is adapted to the inner cavity of the sleeve 7. The inner side of the two limiting heads 8 is provided with a spring 9. When the distance between the two nut seat bodies 1 is adjusted, it will drive the round rod 6 to move in the sleeve 7, compressing or gradually releasing the spring 9. The elastic force generated by the spring 9 can also assist in applying preload.

[0021] In specific implementation, multiple connecting holes 4 are distributed around the outer side of the nut seat body 1, and a part of the inner wall of the connecting hole 4 is threaded, and a part of the outer wall of the round rod 6 is threaded. The outer wall thread of the round rod 6 is screwed into the thread of the inner wall of the connecting hole 4. In order to enhance the stability of the connection and facilitate operation, the outer wall of the round rod 6 is also interference-fitted with an external hexagonal sleeve 10. Tools such as wrenches can be used to install and remove the round rod 6 through the external hexagonal sleeve 10.

[0022] In practice, to further secure the round rod 6, a threaded hole is provided at the outer end of the round rod 6. An inner groove is also provided on the outer side wall of the nut seat body 1 at the position corresponding to the connecting hole 4. An internal hexagon bolt 11 is inserted into the outer side of the connecting hole 4, and the end of the internal hexagon bolt 11 is screwed into the threaded hole at the outer end of the round rod 6. The head of the internal hexagon bolt 11 is embedded in the inner groove at the connecting hole 4. This double fixing method further enhances the connection strength between the round rod 6 and the nut seat body 1 and prevents loosening.

[0023] In specific implementation, the linear transmission assembly includes a threaded sleeve 12 and an internal hexagon screw 13 that is threadedly engaged with it. The threaded sleeve 12 is installed together with one of the nut seat bodies 1, and the internal hexagon screw 13 is rotatably connected to the other nut seat body 1. By rotating the internal hexagon screw 13, the distance between the two nut seat bodies 1 can be adjusted, thereby applying axial preload.

[0024] In specific implementation, a connecting hole 2 5 is provided on the upper middle part of the outer side of the nut seat body 1 connected to the internal hexagonal screw 13, and an inner groove is provided on the outer side of the nut seat body 1 at the corresponding position of the connecting hole 2 5. A bearing is provided in the inner groove at the connecting hole 2 5. The head of the internal hexagonal screw 13 is embedded in the inner groove at the connecting hole 2 5 and connected to the inner ring of the bearing. The bearing enables the internal hexagonal screw 13 to rotate stably and smoothly.

[0025] The above description of the embodiments is provided to facilitate understanding and use of the present invention by those skilled in the art. It is obvious to those skilled in the art that various modifications can be made to the embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, the present invention is not limited to the above embodiments. Any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A preloadable nut seat, characterized in that: It includes two nut seat bodies (1), and multiple elastic telescopic connectors are distributed around the inner sides of the two nut seat bodies (1) to provide reverse elastic support. A linear transmission assembly is also provided in the upper middle part between the two nut seat bodies (1) to adjust the distance between the two nut seat bodies (1) to apply axial preload.

2. The preloadable nut seat according to claim 1, characterized in that: The elastic telescopic connector includes a sleeve (7), a round rod (6), a limiting head (8), and a spring (9). The round rod (6) is inserted into both sides of the sleeve (7). The outer end of the round rod (6) is connected to the nut seat body (1), and its inner end is provided with a limiting head (8) that is adapted to the inner cavity of the sleeve (7). The inner side of the two limiting heads (8) is provided with a spring (9).

3. A preloadable nut seat according to claim 2, characterized in that: The outer side of the nut seat body (1) is provided with a plurality of connecting holes (4), and a part of the inner wall of the connecting hole (4) is threaded. A part of the outer wall of the round rod (6) is threaded. The outer wall thread of the round rod (6) is screwed into the thread of the inner wall of the connecting hole (4). The outer wall of the round rod (6) is also interference-fitted with an external hexagonal sleeve (10).

4. A preloadable nut seat according to claim 3, characterized in that: The outer end of the round rod (6) is also provided with a threaded hole. The outer side wall of the nut seat body (1) is also provided with an inner groove corresponding to the connection hole (4). An internal hexagon bolt (11) is inserted into the outer side of the connection hole (4), and the end of the internal hexagon bolt (11) is screwed into the threaded hole at the outer end of the round rod (6). The head of the internal hexagon bolt (11) is embedded in the inner groove at the connection hole (4).

5. A preloadable nut seat according to claim 4, characterized in that: The linear transmission assembly includes a threaded sleeve (12) and an internal hexagonal screw (13) screwed thereto. The threaded sleeve (12) is installed together with one of the nut seat bodies (1), and the internal hexagonal screw (13) is rotatably connected to the other nut seat body (1).

6. A preloadable nut seat according to claim 5, characterized in that: A connecting hole 2 (5) is provided on the upper outer side of the nut seat body (1) connected to the internal hexagonal screw (13), and an inner groove is provided on the outer side of the nut seat body (1) corresponding to the connecting hole 2 (5). A bearing is provided in the inner groove at the connecting hole 2 (5), and the head of the internal hexagonal screw (13) is embedded in the inner groove at the connecting hole 2 (5) and connected to the inner ring of the bearing.

7. A preloadable nut seat according to any one of claims 1-6, characterized in that: The nut seat body (1) has mounting holes 1 (2) on both sides of its top, and multiple mounting holes 2 (3) are arranged in a circular array on the outer side of the nut seat body (1).

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