CN205592248U - Retractable rod piece - Google Patents

Abstract

The utility model discloses a telescopic rod, which comprises a rod body. A hydraulic cylinder, a first piston, and a piston rod are sequentially arranged in the rod body. One end of the piston rod extends out of the rod body. The end of the main body close to the hydraulic cylinder is connected with a connecting cylinder arranged perpendicular to the body of the rod. The connecting cylinder is provided with a second piston connected to the hydraulic cylinder, and a rotating member is arranged above the second piston. The rotating member includes A rotating handle located outside the connecting cylinder, a rotating rod arranged under the rotating handle and connected to the second piston, the rotating rod can be telescopically embedded in the connecting cylinder. The utility model can freely adjust the length of the telescopic rod without releasing the original pressure, is easy to operate, has a wide range of use, does not appear dislocation, stuck phenomenon, has the characteristics of stable connection, high precision and sensitivity, etc., and has good practicability. It is worth promoting widely.

Description

a telescopic rod

technical field

The utility model relates to a telescopic rod.

Background technique

The telescopic rod has the characteristics of simple structure, flexible scalability, compact size when folded, etc., which is convenient to use, store and carry, and is widely used in different fields. A traditional telescopic rod includes an outer fixed sleeve and a telescopic rod embedded in the sleeve. The telescopic rod expands and contracts along the axial direction of the sleeve, and when adjusted to a suitable length or height, it is stuck in the sleeve and remains fixed relative to the sleeve, in order to prevent the dislocation between the telescopic rod and the sleeve from causing jamming , The cross-section of the telescopic rod is generally square or oval, which requires high precision, difficult processing technology, and cumbersome operation.

Chinese patent No. 2012203646676 is a utility model, which discloses a telescopic rod, including a core tube with an elastic pin at the end, an outer tube with a positioning hole on the tube wall, and a sleeve sleeve at the end of the outer tube. The core tube is The round tube, the outer tube is a quasi-round tube, the quasi-round tube means that the round tube protrudes outwards and has a ridge parallel to the center line, and the positioning hole is set at the position of the ridge. Although this utility model adopts circular pipe fittings to reduce processing difficulty, it still has the following defects: one, the distance between the extension and shortening of the telescopic rod is limited by the number of positioning holes on the outer tube and the distance between them, and the telescopic The length of the rod cannot be adjusted freely, the scope of use is limited, and the practicability is poor, and the length of the telescopic rod can only be adjusted by releasing the original pressure, which is difficult and laborious; secondly, there is no relevant scale on the telescopic rod. The length of elongation or shortening cannot be visually displayed, which makes it inconvenient to use.

Utility model content

Aiming at the deficiencies in the prior art, the utility model provides a telescopic rod with wide application range, free length adjustment and easy operation.

In order to achieve the above object, the technical scheme that the utility model takes:

A telescopic rod, comprising a hollow rod body, in which a hydraulic cylinder, a first piston, and a piston rod are sequentially arranged, and one end of the piston rod extends out of the rod body, and the rod body is close to One end of the hydraulic cylinder is connected with a connecting cylinder arranged perpendicular to the body of the rod, and a second piston connected to the hydraulic cylinder is arranged in the connecting cylinder, and a rotating member is arranged above the second piston, and the rotating member includes a The rotating handle outside the cylinder, the rotating rod arranged under the rotating handle and connected with the second piston, the rotating rod can be telescopically embedded in the connecting cylinder.

As an optimal technical solution, in order to visually display the distance of extension or shortening of the telescopic rod, facilitate operation, and improve the accuracy of telescopic, a scale is provided on the piston rod.

As a preferred technical solution, in order to make the telescopic rod easy to operate and at the same time ensure the tightness and stability of the connection of the telescopic rod, the rotating rod and the connecting cylinder are connected by threads.

As a preferred technical solution, in order to facilitate the connection between the connecting cylinder and the rod body, and at the same time ensure the tightness and stability of the connection, the rod body is connected to the connecting cylinder through the connecting piece on its end, and the connecting piece and the connecting cylinder are threaded. connect.

Compared with the prior art, the utility model has the beneficial effects:

1. The relative length of the rod body and the piston rod is changed by hydraulic means to realize the extension or shortening of the telescopic rod, which changes the traditional nesting structure and can freely adjust the length of the telescopic rod without releasing the original pressure. The operation is simple, the application range is wide, and the practicability is good.

2. There is a scale on the piston rod, which can visually display the distance that the telescopic rod is extended or shortened, which is convenient and practical to operate, and at the same time improves the accuracy of telescopic.

3. The rotating rod and the connecting cylinder are connected by thread, and the length adjustment of the telescopic rod is realized by rotation, which is easy to operate and the connection is tight and stable; the connecting piece connected with the connecting cylinder by thread is provided to facilitate the assembly of the connecting cylinder and the rod body. Also make sure the connections are tight.

Description of drawings

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a sectional view of the utility model;

Fig. 3 is the structural representation of bar body;

Fig. 4 is the structural representation of rotating member;

Figure 5 is a sectional view of the connecting cylinder;

Reference numerals: 1. rod body, 1-1, connector, 2. hydraulic cylinder, 3. first piston, 4. piston rod, 4-1, scale, 5. connecting cylinder, 6. second piston , 7, rotating part, 7-1, rotating handle, 7-2, rotating rod.

detailed description

As shown in Figures 1 and 2, a specific embodiment of the utility model is proposed, a telescopic rod, including a hollow rod body 1, in which a hydraulic cylinder 2, First piston 3, piston rod 4, one end of the piston rod 4 extends out of the rod body, and the diameter of the piston rod 4 extending out of the rod body 1 is smaller than the diameter of the piston rod 4 in the body 1, the rod One end of the body 1 near the hydraulic cylinder 2, that is, the top end, is connected with a connecting cylinder 5 arranged perpendicular to the rod body 1, and the connecting cylinder 5 is provided with a second piston 6 connected to the hydraulic cylinder 2, and the second piston 6 There is a T-shaped rotating member 7 on the upper side, which includes a rotating handle 7-1 located outside the connecting cylinder 1, a rotating rod 7-1 located below the rotating handle 7-1 and connected to the second piston 6 2. The rotating rod 7-2 is telescopically embedded in the connecting cylinder 5, and the top end of the rod body 1 is provided with a cylinder cover.

The piston rod 4 that extends out of the rod body 1 is provided with a scale 4-1, which can visually display the distance of extension or shortening of the telescopic rod, combined with the scale 4-1 for reasonable operation, it is simple and practical , while improving the accuracy of stretching.

The rotating rod 7-2 is threadedly connected with the connecting cylinder, that is, the outer upper end of the rotating rod 7-2 is provided with an external thread, as shown in Figure 4, and the corresponding position inside the connecting cylinder 5 is provided with an internal thread, as shown in Figure 5 As shown, just hold the rotating handle 7-1 and rotate to change the length of the rotating rod 7-2 embedded in the connecting cylinder 5, which is easy to operate, and the threaded connection ensures the tight connection between the rotating rod 7-2 and the connecting cylinder.

The rod body 1 is connected to the connecting cylinder 5 through the connecting piece 1-1 on its end, and the connecting piece 1-1 and the connecting cylinder 5 are connected by threads, that is, the outer surface of the connecting piece 1-1 is provided with external threads, As shown in Figure 3, an internal thread is provided at the corresponding position on the inner surface of the connecting cylinder 5, as shown in Figure 5, the thread fit makes the connecting cylinder 5 and the rod body 1 easy to assemble, the processing technology is simple, and at the same time ensures that the connection is tight and stability.

When the utility model is used: connect the utility model to the corresponding position of the equipment or tool, if the length of the telescopic rod needs to be extended, hold the rotary handle 7-1 and rotate it downward, and the second piston 6 squeezes the hydraulic pressure downward. Cylinder 2, so that the hydraulic cylinder 2 pushes the first piston 3 forward, and then the first piston 3 pushes the piston rod 4 to extend out of the rod body 1; if the length of the telescopic rod needs to be shortened, hold the rotary handle 7-1 Rotating upward, the second piston 6 releases the hydraulic cylinder 2, so that the hydraulic cylinder 2 releases the first piston 3 to move backward, thereby shortening the length of the piston rod 4 extending out of the rod body 1; The relative length of telescoping rod part 1 and piston rod realizes.

Of course, the above is only a detailed description of the preferred embodiment of the utility model in conjunction with the accompanying drawings, and is not intended to limit the scope of implementation of the utility model. All equivalent changes made according to the principle, structure and structure of the utility model shall be Covered within the protection scope of the present utility model.

Claims (4)

1. a telescoping rod, including the rod member body (1) of hollow, it is characterised in that: described bar Hydraulic cylinder (2), first piston (3), piston rod (4) it is sequentially provided with in part body (1), described Rod member body (1) is extended outward in one end of piston rod (4), and described rod member body (1) is near liquid One end of cylinder pressure (2) connects to have and is perpendicular to company's cylinder (5) that rod member body (1) is arranged, described even cylinder (5) the second piston (6) being connected with hydraulic cylinder (2) it is provided with in, described second piston (6) Be arranged over revolving part (7), this revolving part (7) include being positioned at the outer rotary handle (7-1) of even cylinder (5), The lower section being located at rotary handle (7-1) and the swingle (7-2) being connected with the second piston (6), institute State in swingle (7-2) scalability ground embedding even cylinder (5).

A kind of telescoping rod the most according to claim 1, it is characterised in that: described piston rod (4) graduation apparatus (4-1) it is provided with.

A kind of telescoping rod the most according to claim 1 and 2, it is characterised in that: described rotation Bull stick (7-2) is threaded connection with even cylinder (5).

A kind of telescoping rod the most according to claim 3, it is characterised in that: described rod member is originally Body (1) is connected with even cylinder (5) by the connector (1-1) being located on its end, and connector (1-1) It is threaded connection with even cylinder (5).