Automatic tensioning device for small space

Abstract

The utility model relates to the technical field of automatic tensioning devices, and discloses an automatic tensioning device for a small space, which comprises an automatic tensioning device, a screw rod is in threaded connection with the inside of an inner sleeve, a mounting seat A is mounted on the outer surface of a fixed pipe, and a mounting seat B is mounted at the upper end of the outer surface of the screw rod; a spring is installed between the top end of the installation base A and the bottom end of the installation base B. The outer surface of the lead screw is in threaded connection with a nut, and the nut is arranged at the top end of the installation base B. An inner sleeve is additionally arranged in the fixing pipe, and a threaded groove is formed in the inner wall of the inner sleeve. The spring is limited by the mounting seat A and the lead screw, and the spring is flexibly limited, so that when the force exceeds the rigidity range of the spring, the fixing pipe is used for hard limiting, and the device can meet the automatic tensioning working condition at any angle.

Description

Technical Field

[0001] This utility model relates to the field of automatic tensioning device technology, specifically an automatic tensioning device for small spaces. Background Technology

[0002] An automatic tensioning device is a device used to maintain stable tension in a mechanical system. It ensures the normal operation of the system by automatically adjusting the tension and is commonly used in mechanical equipment such as belt conveyors, drive belts, and chain drive systems.

[0003] Conventional tensioning devices use guide rails as limiting mechanisms and springs as tensioning structures. They occupy a large space and can only function within a 180° range in front and behind. This makes them unsuitable for customers with limited space and wide requirements. The structure is also relatively complex, making assembly troublesome and increasing the workload of personnel.

[0004] Therefore, we propose an automatic tensioning device for small spaces to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide an automatic tensioning device for small spaces, so as to solve the problems of limited space and complicated assembly of tensioning devices mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic tensioning device for small spaces, comprising an automatic tensioning device, wherein the automatic tensioning device includes a fixed tube and an inner sleeve installed in the middle of the fixed tube, the inner sleeve is threaded with a lead screw, an mounting seat A is installed on the outer surface of the fixed tube, an mounting seat B is installed on the upper end of the outer surface of the lead screw, and a spring is installed between the top end of the mounting seat A and the bottom end of the mounting seat B.

[0007] The outer surface of the lead screw is threaded with a nut, and the nut is located at the top of the mounting base B.

[0008] Preferably, the outer surface of the fixing tube is provided with an injection hole, and one end of the injection hole and the inside of the fixing tube and the inner sleeve are provided with a delivery hole.

[0009] Preferably, a bottom rotation groove is provided at the bottom end of the delivery hole and inside the body of the fixing tube, and the bottom rotation groove is located on the side close to the injection hole.

[0010] Preferably, a rotating rod is installed between the inner walls of the bottom rotating groove, and a baffle is installed on the outer surface of the rotating rod.

[0011] Preferably, a circular groove is provided at the middle of both ends of the rotating rod, and a torsion spring is installed inside the circular groove.

[0012] Preferably, the inner sleeve is a tubular component made of nylon.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model discloses an automatic tensioning device for small spaces. An inner sleeve is added inside the fixed tube. The inner wall of the inner sleeve has a threaded groove. The self-lubricating property of nylon is used to provide lubrication for the fixed tube, reducing frictional resistance. The mounting seat A and the screw limit the spring. The spring is flexibly limited. When the force exceeds the rigidity range of the spring, the fixed tube provides hard limit. The device can meet the automatic tensioning conditions at any angle.

[0015] 2. The present invention discloses an automatic tensioning device for small spaces, wherein the oil injection end of the oil bottle can be inserted into the injection hole, and the lubricating oil flows into the threaded groove of the inner sleeve through the delivery hole. The lubricating oil flows along the threaded groove of the inner sleeve to lubricate the lead screw and the inner sleeve, making it easier to rotate the lead screw. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the automatic tensioning device of this utility model;

[0018] Figure 3 This is a schematic diagram of the fixed tube structure of this utility model;

[0019] Figure 4 For the present utility model Figure 3 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Automatic tensioning device; 11. Fixed tube; 12. Mounting seat A; 13. Lead screw; 14. Mounting seat B; 15. Spring; 16. Nut; 17. Injection hole; 18. Inner sleeve; 19. Conveying hole; 191. Rotating rod; 192. Circular groove; 193. Torsion spring; 194. Baffle; 195. Bottom rotating groove. 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] Example 1: Please refer to Figure 1 and Figure 2An automatic tensioning device for small spaces includes an automatic tensioning device 1. The automatic tensioning device 1 includes a fixed tube 11 and an inner sleeve 18 installed in the middle of the fixed tube 11. A lead screw 13 is threadedly connected to the inner sleeve 18. A mounting seat A12 is installed on the outer surface of the fixed tube 11. A mounting seat B14 is installed on the upper end of the outer surface of the lead screw 13. A spring 15 is installed between the top end of the mounting seat A12 and the bottom end of the mounting seat B14. The spring 15 is restricted by the mounting seat A12 and the mounting seat B14 to prevent the spring 15 from moving.

[0023] The outer surface of the lead screw 13 is threaded with a nut 16, and the nut 16 is located at the top of the mounting base B14. The position of the mounting base B14 can be adjusted by rotating the nut 16.

[0024] The inner sleeve 18 is a tubular component made of nylon material, which facilitates the rotation of the lead screw 13.

[0025] In this embodiment: an inner sleeve 18 is added inside the fixed tube 11. The inner sleeve 18 is a tubular component made of nylon material. The inner wall of the inner sleeve 18 is provided with a threaded groove. The self-lubricating property of nylon is used to provide lubrication for the fixed tube 11 and reduce frictional resistance. The mounting seat A12 installed on the outer surface of the fixed tube 11 and the mounting seat B14 installed on the upper end of the outer surface of the lead screw 13 restrict the spring 15 located on the outer surface of the fixed tube 11 and the outer surface of the lead screw 13, preventing the spring 15 from moving horizontally. The spring 15 is flexibly limited. When the force exceeds the rigidity range of the spring 15, the fixed tube 11 is used for hard limiting. The device can meet the automatic tensioning condition at any angle. The fixed tube 11 is welded to the automatically tensioned workpiece.

[0026] Example 2: This example is an improvement upon Example 1. For details, please refer to [link / reference]. Figure 3 and Figure 4 An injection hole 17 is provided on the outer surface of the fixed tube 11. A delivery hole 19 is provided at one end of the injection hole 17 and inside the fixed tube 11 and the inner sleeve 18. The interior of the delivery hole 19 is connected to the interior of the threaded groove opened on the inner wall of the inner sleeve 18.

[0027] A bottom rotation groove 195 is provided at the bottom end of the delivery hole 19 and inside the body of the fixed tube 11. The bottom rotation groove 195 is close to the side of the injection hole 17. The cross-sectional area of ​​the delivery hole 19 is larger than that of the injection hole 17.

[0028] A rotating rod 191 is installed between the inner walls of the bottom rotating groove 195. A baffle 194 is installed on the outer surface of the rotating rod 191. The area of ​​the baffle 194 is larger than the cross-sectional area of ​​the injection hole 17. The length of the bottom rotating groove 195 is the same as the distance between the top of the baffle 194 and the bottom of the rotating rod 191.

[0029] The rotating rod 191 has a circular groove 192 at the middle of both ends. A torsion spring 193 is installed inside the circular groove 192. One end of the torsion spring 193 is installed on the inner wall of the bottom rotating groove 195.

[0030] In this embodiment: after the device has been used for a period of time, when it is difficult to rotate the lead screw 13, the oil filling end of the oil bottle can be inserted into the injection hole 17, so that the baffle 194 moves into the bottom rotating groove 195. When the baffle 194 is rotated under force, the rotating rod 191 rotates, and the torsion spring 193 connected between the inner wall of the circular groove 192 and the inner wall of the bottom rotating groove 195 deforms. When the oil bottle is squeezed, the lubricating oil flows into the threaded groove of the inner sleeve 18 through the delivery hole 19. The lubricating oil flows along the threaded groove of the inner sleeve 18 to lubricate the lead screw 13 and the inner sleeve 18, making it easier to rotate the lead screw 13.

[0031] Working principle: An inner sleeve 18 is added inside the fixed tube 11. The inner wall of the inner sleeve 18 is provided with a threaded groove. The self-lubricating property of nylon is used to provide lubrication for the fixed tube 11, reducing frictional resistance. The mounting seat A12 and the screw 13 restrict the spring 15. The spring 15 is flexibly limited. When the force exceeds the rigidity range of the spring 15, the fixed tube 11 provides hard limiting. The device can meet the automatic tensioning conditions at any angle.

[0032] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic tensioning device for small spaces, comprising an automatic tensioning device (1), characterized in that: The automatic tensioner (1) comprises a fixed tube (11) and an inner sleeve (18) mounted at the middle end inside the fixed tube (11), the inner sleeve (18) is screwed with a lead screw (13), the outer surface of the fixed tube (11) is provided with a mounting seat A (12), the outer surface of the lead screw (13) is provided with a mounting seat B (14), and the spring (15) is mounted between the top end of the mounting seat A (12) and the bottom end of the mounting seat B (14). The outer surface of the lead screw (13) is screwed with a nut (16), and the nut (16) is arranged at the top end of the mounting seat B (14).

2. An automatic tensioning device for small spaces according to claim 1, characterized in that: The outer surface of the fixed tube (11) is provided with an injection hole (17), one end of the injection hole (17) is provided with a delivery hole (19) inside the fixed tube (11) and the inner sleeve (18).

3. An automatic tensioning device for small spaces according to claim 2, characterized in that: The bottom end of the delivery hole (19) is provided with a bottom rotating groove (195) inside the body of the fixed tube (11), and the bottom rotating groove (195) is close to one side of the injection hole (17).

4. An automatic tensioning device for small spaces according to claim 3, characterized in that: The inner wall between the bottom rotating groove (195) is provided with a rotating rod (191), and the outer surface of the rotating rod (191) is provided with a baffle (194).

5. An automatic tensioning device for small spaces according to claim 4, characterized in that: The middle part of both ends of the rotating rod (191) is provided with a circular groove (192), and the inner part of the circular groove (192) is provided with a torsion spring (193).

6. An automatic tensioning device for small spaces according to claim 1, characterized in that: The material of the inner sleeve (18) is a tubular member made of nylon material.

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