Hydraulic telescopic rod

Abstract

The hydraulic telescopic rod comprises a cylinder body and a rod body, the rod body is movably arranged in the cylinder body, the top end of the rod body penetrates through the top of the cylinder body, two symmetrically-distributed semi-ring plates are arranged on the top of the cylinder body, arc-shaped grooves are formed in the sides, close to each other, of the two semi-ring plates, and the arc-shaped grooves are communicated with the cylinder body. Arc-shaped sealing strips are arranged in the arc-shaped grooves, the two arc-shaped sealing strips make contact with the outer wall of the rod body and are used for cleaning the outer wall of the rod body, and the tops of the two semi-ring plates are each sleeved with a semicircular shell. The arc-shaped sealing strips between the two semicircular shells and the two semi-ring plates are tightly attached to the outer wall of the rod body, when the rod body moves into the cylinder body, the arc-shaped sealing strips can remove dust particles attached to the surface of the rod body, the friction force between the rod body and the cylinder body is prevented from being increased by the dust particles, and therefore the service life of the rod body is prolonged; workers do not need to frequently and manually clean the rod body, and more time and labor are saved in use.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic rods, in particular to a hydraulic telescopic rod. Background Art

[0002] The hydraulic telescopic rod is a common mechanical device used to achieve the extension and adjustment of objects. The hydraulic telescopic rod is also used in the welding equipment of the tower foot of the power transmission line. It can easily and quickly limit the clamping of different workpieces and improve the processing efficiency. In addition, the hydraulic telescopic rod is also used in dump trucks, but the specific installation location and use effect may vary depending on the application scenario.

[0003] For example, a hydraulic telescopic rod with a prior art publication number of CN208010834U, the utility model adds an oil storage tank connected to the cylinder at the tail end of the cylinder, which greatly increases the oil storage capacity in the cylinder and effectively improves the damping effect; an oil circuit consisting of a first axial oil hole, an outer ring groove, a second axial oil hole, an oil storage groove, and a radial oil groove is arranged between the rodless cavity and the rod cavity, which greatly increases the damping effect of the hydraulic telescopic rod, and can increase the damping force of the hydraulic telescopic rod without increasing the diameter of the cylinder, which is safe and stable.

[0004] However, the above-mentioned prior art still has the following problems when used: due to the different use environments of the hydraulic telescopic rod, when the hydraulic telescopic rod is used in an environment with a lot of dust particles, the dust particles will adhere to the surface of the rod body on the hydraulic telescopic rod. When the rod body is retracted into the cylinder body, the dust particles will increase the friction on the surface of the rod body, thereby causing wear on the outer wall of the rod body and the inner wall of the cylinder body. The staff is required to frequently clean the rod body, which is time-consuming and laborious to use. Based on this, the utility model provides a hydraulic telescopic rod that can automatically clean the rod body. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a hydraulic telescopic rod, which is tightly fitted with the outer wall of the rod body through two arc-shaped sealing strips. When the rod body moves into the cylinder body, the arc-shaped sealing strip can remove dust particles adhering to the surface of the rod body, thereby preventing the dust particles from increasing the friction between the rod body and the cylinder body, thereby extending the service life of the rod body. There is no need for staff to frequently manually clean the rod body, which is more time-saving and labor-saving to use, thereby solving the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic telescopic rod, comprising a cylinder body and a rod body, the rod body being movably arranged inside the cylinder body, and the top end of the rod body passing through the top of the cylinder body, the top of the cylinder body being provided with two symmetrically distributed semi-ring plates, the two semi-ring plates being provided with arc grooves on one side close to each other, arc sealing strips being provided in the arc grooves, the two arc sealing strips being in contact with the outer wall of the rod body for cleaning the outer wall of the rod body, the tops of the two semi-ring plates being provided with semicircular shells, the two semi-circular shells being fixed by first bolts and nuts for easy disassembly of the two semi-circular shells, the outer wall surfaces of the two semi-ring plates and the inner wall surfaces of the two semi-circular shells being processed with threads, the two semi-circular shells being threadedly connected to the two semi-ring plates, and the tops of the two semi-circular shells being provided with through holes.

[0007] In a preferred embodiment, grooves are provided on both sides of the two semicircular shells for accommodating the first bolts and nuts, thereby preventing the first bolts and nuts from being exposed.

[0008] In a preferred embodiment, the inner diameters of the two through-holes are both smaller than the inner diameter of the arc-shaped sealing strip, thereby preventing the arc-shaped sealing strip from moving out of the through-holes.

[0009] In a preferred embodiment, multiple circular grooves are opened on the top of the two semi-ring plates, and second bolts are arranged in the multiple circular grooves. The semi-ring plates are fixed to the cylinder body by the multiple second bolts, which makes it easy for the staff to disassemble the semi-ring plates and clean and replace them.

[0010] In a preferred embodiment, a rubber plug is inserted into each circular groove, and the outer wall surface of the rubber plug and the inner wall surface of the circular groove are processed with multiple protrusions. The multiple protrusions can increase the friction between the rubber plug surface and the inner wall surface of the circular groove. Therefore, when the rubber plug is plugged into the circular groove, the multiple protrusions can increase the firmness between the rubber plug and the circular groove.

[0011] In a preferred embodiment, each rubber stopper has an embedding groove on the top, each rubber stopper has a receiving groove on the bottom, and the second bolt is arranged inside the receiving groove to prevent the second bolt from hindering the rubber stopper from being plugged into the circular groove.

[0012] In a preferred embodiment, the bottom end of the cylinder body and the top of the rod body are both fixed with connecting pieces, and the front ends of the two connecting pieces are both provided with connecting holes for connecting the cylinder body and the rod body to the device for use.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model closely fits the outer wall of the rod body through the arc-shaped sealing strip between the two semicircular shells and the two semi-ring plates. When the rod body moves into the cylinder body, the arc-shaped sealing strip can remove dust particles adhering to the surface of the rod body, so as to prevent the dust particles from increasing the friction between the rod body and the cylinder body, thereby extending the service life of the rod body. There is no need for the staff to frequently clean the rod body manually, which is more time-saving and labor-saving to use.

[0015] 2. By loosening the first bolt and nut and removing the two semicircular shells from the rod body, the two arc-shaped sealing strips can be taken out for replacement, and then the two semicircular shells can be reinstalled. The semicircular shells can be used to compress the arc-shaped sealing strips to improve the stability of the arc-shaped sealing strips. The staff can also pull out the rubber plug and then loosen the second bolt in the circular groove to remove the semi-ring plate from the top of the cylinder body for cleaning and replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is the overall structural front view of the utility model;

[0018] Figure 3 This is a structural diagram of two semicircular shells and two semi-ring plates of the utility model;

[0019] Figure 4 It is a bottom view of two semicircular shells of the utility model;

[0020] Figure 5 This is a structural diagram of the rubber plug, the second bolt and the semi-ring plate of the utility model.

[0021] The accompanying drawings are marked as follows: 1. cylinder body; 2. rod body; 3. semi-ring plate; 4. arc groove; 5. arc sealing strip; 6. semicircular shell; 7. first bolt; 8. nut; 9. through hole; 10. groove; 11. circular groove; 12. second bolt; 13. rubber plug; 14. protrusion; 15. embedded groove; 16. storage groove; 17. connecting piece; 18. connecting hole. 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] Refer to the instruction manual Figure 1-5The utility model provides a hydraulic telescopic rod, comprising a cylinder body 1 and a rod body 2, wherein the rod body 2 is movably arranged inside the cylinder body 1, and the top of the rod body 2 passes through the top of the cylinder body 1, and two symmetrically distributed semi-ring plates 3 are arranged on the top of the cylinder body 1, and arc grooves 4 are provided on the sides of the two semi-ring plates 3 close to each other, and arc sealing strips 5 are provided in the arc grooves 4, and the two arc sealing strips 5 are in contact with the outer wall of the rod body 2 for cleaning the outer wall of the rod body 2, and semicircular shells 6 are sleeved on the tops of the two semi-ring plates 3, and the two semi-circular shells 6 are fixed by first bolts 7 and nuts 8, so as to facilitate the separation of the two semi-circular shells 6, and grooves 10 are provided on both sides of the two semi-circular shells 6 for receiving the first bolts 7 and nuts 8, so as to avoid the first bolts 7 and nuts 8 being exposed to the outside;

[0024] The outer wall surfaces of the two semi-ring plates 3 and the inner wall surfaces of the two semicircular shells 6 are both processed with threads. The two semicircular shells 6 are threadedly connected to the two semi-ring plates 3. The tops of the two semicircular shells 6 are each provided with a through hole 9. The inner diameters of the two through holes 9 are both smaller than the inner diameter of the arc-shaped sealing strip 5, which can prevent the arc-shaped sealing strip 5 from moving out of the through hole 9. The bottom end of the cylinder body 1 and the top of the rod body 2 are both fixed with connecting parts 17. The front ends of the two connecting parts 17 are both provided with connecting holes 18, which are used to connect the cylinder body 1 and the rod body 2 to the equipment for use.

[0025] When in use, first fix the two semi-ring plates 3 on the cylinder body 1, and place the arc-shaped sealing strips 5 in the arc-shaped grooves 4 on the two semi-ring plates 3, and the two arc-shaped sealing strips 5 are in contact with and tightly attached to the outer wall of the rod body 2. When the rod body 2 moves into the cylinder body 1, the arc-shaped sealing strips 5 can remove dust particles adhering to the surface of the rod body 2 to prevent the dust particles from increasing the friction between the rod body 2 and the cylinder body 1, thereby extending the service life of the rod body 2, and there is no need for the staff to frequently manually clean the rod body 2, which is more time-saving and labor-saving to use.

[0026] Refer to the instruction manual Figure 1-5 , a plurality of circular grooves 11 are provided on the top of the two semi-ring plates 3, and a second bolt 12 is provided in each of the plurality of circular grooves 11. The semi-ring plates 3 are fixed to the cylinder body 1 by the plurality of second bolts 12, so that the staff can disassemble the semi-ring plates 3 and clean and replace the semi-ring plates 3;

[0027] Furthermore, in order to seal the circular groove 11, a rubber plug 13 is inserted into each circular groove 11, and the outer wall surface of the rubber plug 13 and the inner wall surface of the circular groove 11 are processed with a plurality of protrusions 14, and the plurality of protrusions 14 can improve the friction between the surface of the rubber plug 13 and the inner wall surface of the circular groove 11, so when the rubber plug 13 is plugged into the circular groove 11, the plurality of protrusions 14 can improve the firmness between the rubber plug 13 and the circular groove 11;

[0028] Moreover, each rubber stopper 13 has an embedding groove 15 on the top and a receiving groove 16 on the bottom. The second bolt 12 is arranged inside the receiving groove 16 to prevent the second bolt 12 from hindering the rubber stopper 13 from being plugged into the circular groove 11 .

[0029] By first loosening the two semicircular shells 6 from the two semi-ring plates 3, and then loosening the two first bolts 7 and the nuts 8, the two semicircular shells 6 are taken out from the rod body 2, and then the two arcuate sealing strips 5 can be taken out from the two arcuate grooves 4 respectively, and the arcuate sealing strips 5 are replaced, and then the two semicircular shells 6 are re-fixed on the two semi-ring plates 3, and the arcuate sealing strips 5 are compressed by the semicircular shells 6 to improve the stability of the arcuate sealing strips 5, and the staff can also pull out the rubber plug 13, and then loosen the second bolt 12 in the circular groove 11, and the semi-ring plate 3 can be removed from the top of the cylinder body 1 for cleaning and replacement.

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A hydraulic telescopic rod, comprising a cylinder body (1) and a rod body (2), wherein the rod body (2) is movably arranged inside the cylinder body (1), and the top end of the rod body (2) passes through the top of the cylinder body (1), characterized in that: The top of the cylinder body (1) is provided with two symmetrically distributed semi-ring plates (3), and the two semi-ring plates (3) are provided with arc grooves (4) on the sides close to each other. The arc grooves (4) are provided with arc sealing strips (5), and the two arc sealing strips (5) are in contact with the outer wall of the rod body (2) for cleaning the outer wall of the rod body (2); A semicircular shell (6) is sleeved on the top of the two semi-ring plates (3), and the two semi-circular shells (6) are fixed by a first bolt (7) and a nut (8) to facilitate the separation of the two semi-circular shells (6). The outer wall surfaces of the two semi-ring plates (3) and the inner wall surfaces of the two semi-circular shells (6) are both processed with threads, and the two semi-circular shells (6) are threadedly connected to the two semi-ring plates (3). The tops of the two semi-circular shells (6) are each provided with a through hole (9).

2. A hydraulic telescopic rod according to claim 1, characterized in that: Grooves (10) are provided on both sides of the two semicircular shells (6) for receiving the first bolts (7) and nuts (8).

3. The hydraulic telescopic rod according to claim 1, characterized in that: The inner diameters of the two through holes (9) are both smaller than the inner diameter of the arc-shaped sealing strip (5), thereby preventing the arc-shaped sealing strip (5) from moving out of the through holes (9).

4. The hydraulic telescopic rod according to claim 1, characterized in that: A plurality of circular grooves (11) are provided on the tops of the two semi-ring plates (3), and a second bolt (12) is provided in each of the plurality of circular grooves (11). The semi-ring plates (3) are fixed to the cylinder body (1) by the plurality of second bolts (12), so that the semi-ring plates (3) can be easily disassembled.

5. The hydraulic telescopic rod according to claim 4, characterized in that: A rubber plug (13) is inserted into each circular groove (11), and the outer wall surface of the rubber plug (13) and the inner wall surface of the circular groove (11) are processed with a plurality of protrusions (14) for improving the firmness between the rubber plug (13) and the circular groove (11).

6. A hydraulic telescopic rod according to claim 5, characterized in that: Each rubber stopper (13) has an embedding groove (15) at the top, and each rubber stopper (13) has a receiving groove (16) at the bottom. The second bolt (12) is arranged inside the receiving groove (16) to prevent the second bolt (12) from obstructing the rubber stopper (13).

7. The hydraulic telescopic rod according to claim 1, characterized in that: The bottom end of the cylinder body (1) and the top of the rod body (2) are both fixedly provided with connecting pieces (17), and the front ends of the two connecting pieces (17) are both provided with connecting holes (18).

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