Telescopic structure capable of adjusting pipe length

Abstract

The utility model discloses a telescopic structure capable of adjusting the length of a pipe, and relates to the technical field of telescopic rods. Comprising a main aluminum pipe, one end of the outer surface of the main aluminum pipe is provided with a locking body, the surface of the locking body is in threaded connection with a locking ring, the inner wall of the main aluminum pipe is slidably connected with an auxiliary aluminum pipe, the outer surface of the auxiliary aluminum pipe is provided with a clamping ring, the inner wall of the clamping ring is a locking face, the locking face is movably connected with the auxiliary aluminum pipe, and the outer surface of the clamping ring is movably connected with the locking ring. Stable adjusting mechanisms are arranged in the main aluminum pipe and the auxiliary aluminum pipe. By arranging the main aluminum pipe and the auxiliary aluminum pipe, the telescopic operation can be carried out when the equipment is used, the situation that the working rod is too long or too short due to different heights of branches is reduced, the equipment can be conveniently adjusted when being used, and the convenience, practicability and applicability of the equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic rods, in particular to a telescopic structure capable of adjusting the length of a tube. Background Art

[0002] High branch saws are mainly used for pruning branches of taller trees. People do not need to climb up the trees to prune. They have the advantages of simple operation, fast speed, high efficiency, low labor intensity, and are convenient for outdoor field operations. Their popularity is gradually increasing, which reduces the labor intensity of operators and improves efficiency.

[0003] The existing high-branch saw mainly includes a gasoline engine, a working rod, a saw head, and a throttle operating system. The gasoline engine and the working rod are connected by a transition connector, and the saw head is directly connected to the working rod. When working, the gasoline engine rotates at high speed to drive the passive disk through the clutch, and the passive disk drives the transmission shaft, and the transmission shaft drives the saw head to rotate at high speed to achieve the sawing effect.

[0004] The existing high branch saws have the problem that the branches to be sawed are of different heights, and the working rod is too long or too short. Even if the length can be adjusted, it still needs the help of tools, which is inconvenient to operate and affects the use efficiency, reducing people's willingness to use high branch saws. Utility Model Content

[0005] The purpose of the utility model is to provide a telescopic structure capable of adjusting the length of a tube, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a telescopic structure with adjustable tube length, comprising a main aluminum tube, a locking body is installed at one end of the outer surface of the main aluminum tube, a locking ring is threaded on the surface of the locking body, a secondary aluminum tube is slidably connected to the inner wall of the main aluminum tube, a clamping ring is installed on the outer surface of the secondary aluminum tube, the inner wall of the clamping ring is a locking surface, the locking surface and the secondary aluminum tube are movably connected, the outer surface of the clamping ring and the locking ring are movably connected, and a stable adjustment mechanism is arranged inside the main aluminum tube and the secondary aluminum tube.

[0007] Preferably, the stabilizing adjustment mechanism includes a secondary transmission shaft, the surface of the secondary transmission shaft is movably connected with an aluminum tube support near one end, one end of the aluminum tube support is fixedly connected with a connecting sleeve, the outer surface of the connecting sleeve is fixedly connected with an aluminum tube support positioning platform, a secondary aluminum tube inner wall is provided with a secondary aluminum tube positioning hole near one end, the aluminum tube support positioning platform and the secondary aluminum tube positioning hole are adapted to each other, a secondary transmission shaft support is installed on the inner wall of the secondary aluminum tube, the outer surface of the secondary transmission shaft is installed on the secondary transmission shaft support, the inner wall of the secondary transmission shaft is slidably connected with the main transmission shaft, a plurality of main transmission shaft supports are installed on the main transmission surface, the outer surface of each main transmission shaft support is slidably connected to the inner wall of the main aluminum tube, and each main transmission shaft support is slidably connected to the main transmission shaft.

[0008] Preferably, each of the main transmission shaft supports includes an upper bearing bracket and a lower bearing bracket, each upper bearing bracket and the lower bearing bracket are adapted to each other, and a bearing aluminum tube support inner wall is also installed with a bearing between each upper bearing bracket and the lower bearing bracket.

[0009] Preferably, a main aluminum tube positioning hole is opened on the inner wall of the main aluminum tube away from one end of the auxiliary aluminum tube, a spring base positioning platform is installed at the main aluminum tube positioning hole, an aluminum tube positioning platform is installed on the inner wall of the aluminum tube, the aluminum tube positioning platform is installed by positioning the spring base, the inner wall of the spring base is installed on the surface of the main transmission shaft, and a telescopic spring is arranged between each spring base and the main transmission shaft support and the aluminum tube support.

[0010] Preferably, a retaining ring is installed inside the aluminum tube support, an aluminum tube positioning platform is installed on the inner wall of the main aluminum tube, the upper bearing bracket, the lower bearing bracket and the aluminum tube positioning platform are adapted to each other, and a clamping ring opening is provided on the outer surface of the clamping ring.

[0011] Preferably, rivets are installed between the locking body and the main aluminum tube.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The telescopic structure with adjustable tube length realizes the telescopic operation of the device when in use by means of the main aluminum tube and the auxiliary aluminum tube, thereby reducing the situation where the working rod is too long or too short due to the different heights of branches, so that the device can be conveniently adjusted when in use, reducing the need for use efficiency, increasing people's willingness to use high branch saws, increasing the convenience of the device, increasing the practicality of the device, and increasing the applicability of the device.

[0014] At the same time, through the internal and external spline clearance fit connection between the main and auxiliary transmission shafts, not only can torque be transmitted, but also axial sliding can be achieved. The main transmission shaft is suspended in the main aluminum tube through the main transmission shaft support, bearings and bearing brackets. When the aluminum tube is telescopic, the internal telescopic spring can evenly distribute multiple main transmission shaft supports in the main aluminum tube, which ensures stable operation and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main aluminum tube positioning structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the second structure of the main aluminum tube positioning created by the utility model;

[0017] Figure 3 This is a schematic diagram of the main transmission shaft assembly structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the locking structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the clamping ring opening structure of the utility model;

[0020] Figure 6 The utility model is a schematic diagram of the internal structure of the aluminum tube.

[0021] In the figure: 1. spring base positioning platform; 2. main aluminum tube positioning hole; 3. spring base; 5. main aluminum tube; 7. telescopic spring; 8. main transmission shaft; 11. bearing; 12. main transmission shaft support; 15. bearing upper bracket; 20. bearing lower bracket; 23. retaining ring; 26. aluminum tube support positioning platform; 27. auxiliary aluminum tube positioning hole; 31 aluminum tube support; 32. connecting sleeve; 33. auxiliary aluminum tube; 34. rivet; 35. locking body; 38. locking ring; 39. clamping ring; 40. locking surface; 41. auxiliary transmission shaft; 42. auxiliary transmission shaft support; 43. clamping ring opening; 51. aluminum tube positioning platform. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] A high branch saw is needed for pruning branches of higher trees. A telescopic structure for adjusting the length of the tube is needed during the use of the high branch pruning saw. The utility model needs to use lightweight materials in its manufacturing to ensure that the overall weight of the equipment can be reduced when it is taken after production, and that it needs to be regularly maintained after use to ensure that the equipment can achieve a good service life during use and that the equipment can operate normally during subsequent work.

[0024] like Figure 1 ﹣ Figure 4As shown, the utility model provides a technical solution: a telescopic structure with adjustable tube length, comprising a main aluminum tube 5, a locking body 35 is installed at one end of the outer surface of the main aluminum tube 5, a locking ring 38 is screwed on the surface of the locking body 35, a secondary aluminum 33 is slidably connected to the inner wall of the main aluminum tube 5, a clamping ring 39 is installed on the outer surface of the secondary aluminum tube 33, the inner wall of the clamping ring 39 is a locking surface 40, the locking surface 40 and the secondary aluminum tube 33 are movably connected, the outer surface of the clamping ring 39 and the locking ring 38 are movably connected, the main aluminum tube 5 and the secondary aluminum tube 33 are provided with a stabilizing adjustment mechanism, the locking body 35 and the main aluminum tube 5 are connected A rivet 34 is installed between them, and the stabilizing and adjusting mechanism includes a secondary transmission shaft 41. The surface of the secondary transmission shaft 41 is movably connected with an aluminum tube support 31 near one end, and a connecting sleeve 32 is fixedly connected to one end of the aluminum tube support 31. The outer surface of the connecting sleeve 32 is fixedly connected to an aluminum tube support positioning platform 26. A secondary aluminum tube 33 inner wall is provided with a secondary aluminum tube positioning hole 27 near one end, and the aluminum tube support positioning platform 26 and the secondary aluminum tube positioning hole 27 are adapted to each other. A secondary transmission shaft support 42 is installed on the inner wall of the secondary aluminum tube 33. The secondary transmission shaft support 42 is installed on the outer surface of the secondary transmission shaft, and the inner wall of the secondary transmission shaft 41 is slidably connected with the main transmission shaft 8, a plurality of main transmission shaft supports 12 are installed on the main transmission surface, and the outer surface of each main transmission shaft support 12 is slidably connected to the inner wall of the main aluminum tube 5, and each main transmission shaft support 12 is slidably connected to the main transmission shaft 8, and each main transmission shaft support 12 includes a bearing upper bracket 15 and a bearing lower bracket 20, and each bearing upper bracket 15 is adapted to the bearing lower bracket 20, and a bearing 11 is installed between each bearing upper bracket 15 and the bearing lower bracket 20, and the inner wall of the aluminum tube support 31 is also installed with a bearing 11, and a main aluminum tube positioning hole 2 is opened at one end of the inner wall of the main aluminum tube 5 away from the auxiliary aluminum tube 33, and the main A spring base positioning platform 1 is installed at the aluminum tube positioning hole 2, an aluminum tube positioning platform 51 is installed on the inner wall of the aluminum tube, and the aluminum tube positioning platform 51 is installed by positioning the spring base 3. The inner wall of the spring base 3 is installed on the surface of the main transmission shaft 8. A telescopic spring 7 is arranged between each spring base 3 and the main transmission shaft support 12 and the aluminum tube support 31. A retaining ring 23 is installed inside the aluminum tube support 31. An aluminum tube positioning platform 51 is installed on the inner wall of the main aluminum tube 5. The upper bearing bracket 15 and the lower bearing bracket 20 and the aluminum tube positioning platform 51 are adapted to each other, and a clamping ring opening 43 is opened on the outer surface of the clamping ring 39.

[0025] The spring base 3 is assembled in the positioning hole on the main aluminum tube 5 through the spring base positioning platform 1. The aluminum tube support 31 is assembled on the auxiliary aluminum tube 33 through the aluminum tube support positioning platform 26. The outer diameter of the aluminum tube support 31 matches the inner hole clearance of the main aluminum tube 5. It can slide axially through the aluminum tube positioning platform 51. The locking body 35 is fixed to the main aluminum tube 5 through the rivet 34. The outer surface is provided with a thread that matches the inner thread of the locking ring 38. The clamping ring 39 squeezes and holds the auxiliary aluminum tube 33 through the locking surface 40. The auxiliary transmission shaft support 42 is assembled in the auxiliary aluminum tube 33. It is made of tough plastic and can effectively reduce vibration. The auxiliary transmission shaft 41 is assembled in the auxiliary transmission shaft support 42. There is a gap In order to achieve the purpose, the main transmission shaft 8 is an outer seven-tooth spline, which is in clearance with the inner seven-tooth spline of the auxiliary transmission shaft 41, and can slide axially and transmit torque through the spline. The main transmission shaft 8 is equipped with a main transmission shaft support 12, which is assembled on the inner hole of the bearing 11. It can rotate and slide axially in the main aluminum tube 5 through the upper bearing bracket 15 and the lower bearing bracket 20. A plurality of telescopic springs 7 are arranged in the main aluminum tube 5. The main transmission shaft support 12, the bearing 11, the upper bearing bracket 15 and the lower bearing bracket 20 are arranged between every two telescopic springs 7. When contracted, the telescopic spring is compressed, and the auxiliary transmission shaft 41 moves toward the main transmission shaft 8. When extended, the auxiliary aluminum tube 33 can be easily extended by the force of the telescopic spring 7.

[0026] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A telescopic structure with adjustable tube length, comprising a main aluminum tube, characterized in that: A locking body is installed at one end of the outer surface of the main aluminum tube, a locking ring is threaded on the surface of the locking body, a secondary aluminum tube is slidably connected to the inner wall of the main aluminum tube, a clamping ring is installed on the outer surface of the secondary aluminum tube, the inner wall of the clamping ring is a locking surface, the locking surface and the secondary aluminum tube are movably connected, the outer surface of the clamping ring and the locking ring are movably connected, and a stabilizing adjustment mechanism is arranged inside the main aluminum tube and the secondary aluminum tube.

2. A telescopic structure with adjustable tube length according to claim 1, characterized in that: The stabilizing and adjusting mechanism comprises a secondary transmission shaft, the surface of the secondary transmission shaft is movably connected with an aluminum tube support near one end, one end of the aluminum tube support is fixedly connected with a connecting sleeve, the outer surface of the connecting sleeve is fixedly connected with an aluminum tube support positioning platform, a secondary aluminum tube inner wall is provided with a secondary aluminum tube positioning hole near one end, the aluminum tube support positioning platform and the secondary aluminum tube positioning hole are adapted to each other, a secondary transmission shaft support is installed on the inner wall of the secondary aluminum tube, the outer surface of the secondary transmission shaft is installed on the secondary transmission shaft support, the inner wall of the secondary transmission shaft is slidably connected with a main transmission shaft, a plurality of main transmission shaft supports are installed on the main transmission surface, the outer surface of each main transmission shaft support is slidably connected to the inner wall of the main aluminum tube, and each main transmission shaft support is slidably connected to the main transmission shaft.

3. A telescopic structure with adjustable tube length according to claim 2, characterized in that: Each of the main transmission shaft supports includes an upper bearing bracket and a lower bearing bracket, each upper bearing bracket is adapted to the lower bearing bracket, and a bearing aluminum tube support inner wall is also installed with a bearing between each upper bearing bracket and the lower bearing bracket.

4. A telescopic structure with adjustable tube length according to claim 3, characterized in that: A main aluminum tube positioning hole is formed on the inner wall of the main aluminum tube at one end away from the auxiliary aluminum tube, a spring base positioning platform is installed at the main aluminum tube positioning hole, an aluminum tube positioning platform is installed on the inner wall of the aluminum tube, the aluminum tube positioning platform is installed by positioning the spring base, the inner wall of the spring base is installed on the surface of the main transmission shaft, and a telescopic spring is arranged between each spring base and the main transmission shaft support and the aluminum tube support.

5. The telescopic structure with adjustable tube length according to claim 3, characterized in that: A retaining ring is installed inside the aluminum tube support, an aluminum tube positioning platform is installed on the inner wall of the main aluminum tube, the upper bearing bracket, the lower bearing bracket and the aluminum tube positioning platform are adapted to each other, and a clamping ring opening is provided on the outer surface of the clamping ring.

6. The telescopic structure with adjustable tube length according to claim 1, characterized in that: Rivets are installed between the locking body and the main aluminum tube.

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