Hydraulic oil cylinder with dustproof structure

Abstract

The hydraulic oil cylinder with the dustproof structure comprises a cylinder body, a piston rod and an oil nozzle, the piston rod slides in the cylinder body, the oil nozzle is welded to the front face of the cylinder body, an extension plate is integrally formed at the top of the cylinder body, a conical scraping block is arranged above the extension plate, two L-shaped receiving boxes are arranged on the extension plate, and the two L-shaped receiving boxes are connected with the piston rod. Baffles are integrally formed on the two L-shaped receiving boxes, rubber sheets are bonded on the L-shaped receiving boxes, and connecting mechanisms are arranged on the outer walls of the L-shaped receiving boxes; in the using process of the hydraulic oil cylinder, in the process that the piston rod enters the oil cylinder, dust and impurities attached to the outer wall of the piston rod can be scraped and intercepted through the arranged conical scraping block, the intercepted dust and impurities can be collected, and the problem that in the prior art, a dustproof pad is arranged at the top of the cylinder body for interception, and the dust and impurities cannot be collected is solved. However, dust and impurities still stay at the top of the cylinder body after interception.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder with a dustproof structure. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the motion is smooth, so it is widely used in the hydraulic systems of various machines. The output force of the hydraulic cylinder is proportional to the effective area of the piston and the pressure difference on both sides; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application, and other devices are indispensable.

[0003] During the use of the hydraulic cylinder, the piston rod can easily bring dust and impurities into the cylinder body, so a dustproof pad is usually set on the top of the cylinder body. The dustproof pad can intercept the dust and impurities on the piston rod, but the dust and impurities still remain on the top of the cylinder body after interception. For a long time, the dust and impurities may be brought into the cylinder body by the piston rod.

[0004] Therefore, we make improvements to this and propose a hydraulic cylinder with a dustproof structure. Utility Model Content

[0005] Purpose of the utility model: When the hydraulic cylinder is currently in use, the piston rod is prone to bring dust and impurities into the cylinder body, so a dustproof pad is usually provided on the top of the cylinder body, which can intercept the dust and impurities on the piston rod. However, after interception, the dust and impurities still remain on the top of the cylinder body, and the dust and impurities may be brought into the cylinder body by the piston rod for a long time.

[0006] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0007] A hydraulic cylinder with a dustproof structure is used to improve the above problems.

[0008] The specific application is as follows:

[0009] It includes a cylinder body, a piston rod and an oil nozzle, the piston rod slides in the cylinder body, the oil nozzle is welded to the front side of the cylinder body, an extension plate is integrally formed on the top of the cylinder body, a conical scraper block is arranged above the extension plate, two L-shaped receiving boxes are arranged on the extension plate, baffles are integrally formed on the two L-shaped receiving boxes, a rubber sheet is bonded to the L-shaped receiving box, and a connecting mechanism is arranged on the outer wall of the L-shaped receiving box.

[0010] As a preferred technical solution of the present application, a notch is provided at the bottom of the L-shaped receiving box.

[0011] As a preferred technical solution of the present application, a limiting block is fixedly installed on the extension plate, and the limiting block is matched with the notch.

[0012] As a preferred technical solution of the present application, a connecting rod is fixedly installed at the bottom of the conical scraping block, and one end of the connecting rod away from the conical scraping block is fixedly connected to the extension plate.

[0013] As a preferred technical solution of the present application, the connecting mechanism includes a connecting piece fixedly installed on the outer wall of the L-shaped receiving box, and a locking bolt is threadedly connected to the connecting piece.

[0014] As a preferred technical solution of the present application, a dust-proof pad is clamped on the top of the cylinder block.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] In the solution of the present application:

[0017] 1. When the piston rod moves into the cylinder block, the conical scraping block can intercept the dust and impurities attached to the outer wall of the piston rod. After frequent interception, the dust and impurities will be collected in the L-shaped receiving box, realizing the scraping and interception of the dust and impurities attached to the outer wall of the piston rod, and being able to collect the intercepted dust and impurities, solving the problem in the prior art that a dust-proof pad is set on the top of the cylinder block for interception, but the dust and impurities still stay on the top of the cylinder block after interception;

[0018] 2. By setting two L-shaped receiving boxes and locking bolts, it is convenient to remove the L-shaped receiving box for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a hydraulic cylinder with a dust-proof structure provided by the present application;

[0020] Figure 2 is a schematic notch structure diagram of a hydraulic cylinder with a dust-proof structure provided by the present application;

[0021] Figure 3 is a schematic structural diagram of a hydraulic cylinder with a dust-proof structure provided by the present application after removing the L-shaped receiving box;

[0022] Figure 4 is a schematic structure of a hydraulic cylinder with a dust-proof structure provided by the present application Figure 3 of the enlarged structure at A;

[0023] Figure 5 is a schematic sectional structure diagram of a hydraulic cylinder with a dust-proof structure provided by the present application;

[0024] Figure 6For the hydraulic cylinder with a dust-proof structure provided by this application Figure 5 Schematic enlarged structure diagram at position B in

[0025] Figure 7 Schematic structure diagram of the L-shaped receiving box, baffle, rubber sheet, and connecting piece of the hydraulic cylinder with a dust-proof structure provided by this application

[0026] Figure 8 Schematic structure diagram of the dust-proof pad of the hydraulic cylinder with a dust-proof structure provided by this application

[0027] Figure 9 Schematic structure diagram of the connecting rod of the hydraulic cylinder with a dust-proof structure provided by this application

[0028] Labels in the figure:

[0029] 1. Cylinder block; 2. Piston rod; 3. Conical scraping block; 4. Extension plate; 5. L-shaped receiving box; 6. Baffle; 7. Rubber sheet; 8. Connecting piece; 9. Locking bolt; 10. Limiting block; 11. Notch; 12. Connecting rod; 13. Dust-proof pad; 14. Oil nozzle. Detailed implementation manners

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model.

[0031] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model claimed, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0032] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0035] Embodiment:

[0036] As Figures 1-9 shown, this embodiment proposes a hydraulic cylinder with a dust-proof structure, including a cylinder block 1, a piston rod 2, and a nozzle 14. The piston rod 2 slides within the cylinder block 1, and the nozzle 14 is welded to the front of the cylinder block 1. An extension plate 4 is integrally formed at the top of the cylinder block 1. Above the extension plate 4, a conical scraping block 3 is provided. On the extension plate 4, there are two L-shaped receiving boxes 5. When the piston rod 2 moves into the cylinder block 1, the conical scraping block 3 can intercept the dust and impurities attached to the outer wall of the piston rod 2. After frequent interception, the dust and impurities will be collected in the L-shaped receiving boxes 5. On both of the two L-shaped receiving boxes 5, a baffle 6 is integrally formed. A rubber sheet 7 is adhered to the L-shaped receiving box 5, and a connecting mechanism is provided on the outer wall of the L-shaped receiving box 5. During the use of this hydraulic cylinder, when the piston rod 2 enters the cylinder 1, through the provided conical scraping block 3, the dust and impurities attached to the outer wall of the piston rod 2 can be scraped and intercepted, and the intercepted dust and impurities can be collected, solving the problem in the prior art that a dust-proof pad is provided at the top of the cylinder block for interception, but the dust and impurities still stay at the top of the cylinder block 1 after interception.

[0037] A notch 11 is opened at the bottom of the L-shaped receiving box 5.

[0038] A limit block 10 is fixedly installed on the extension plate 4. The limit block 10 cooperates with the notch 11, and the limit block 10 on the extension plate 4 is inserted into the notch 11 at the bottom of the L-shaped receiving box 5.

[0039] A connecting rod 12 is fixedly installed at the bottom of the conical scraping block 3. The end of the connecting rod 12 away from the conical scraping block 3 is fixedly connected to the extension plate 4.

[0040] In order to be able to remove the L-shaped receiving box 5 for cleaning, the connecting mechanism includes a connecting piece 8 fixedly installed on the outer wall of the L-shaped receiving box 5, and a locking bolt 9 is threadedly connected to the connecting piece 8.

[0041] A dust-proof pad 13 is clamped at the top of the cylinder block 1.

[0042] Specifically, when the hydraulic cylinder with a dust-proof structure is in use: when the piston rod 2 moves into the cylinder body 1, the conical scraping block 3 can intercept the dust and impurities attached to the outer wall of the piston rod 2. After frequent interception, the dust and impurities will be collected in the L-shaped receiving box 5. During the use of this hydraulic cylinder, when the piston rod 2 enters the cylinder body 1, through the arranged conical scraping block 3, the dust and impurities attached to the outer wall of the piston rod 2 can be scraped and intercepted, and the intercepted dust and impurities can be collected, solving the problem in the prior art that a dust-proof pad is arranged at the top of the cylinder body for interception, but the dust and impurities still stay at the top of the cylinder body 1 after interception; when it is necessary to clean the L-shaped receiving box 5, first remove the locking bolt 9, and then remove the two L-shaped receiving boxes 5 for cleaning. When installing after cleaning, insert the rubber sheet 7 on the L-shaped receiving box 5 into the gap between the conical scraping block 3 and the extension plate 4 (as Figure 6 shown), and at the same time, insert the limit block 10 on the extension plate 4 into the notch 11 at the bottom of the L-shaped receiving box 5, and then thread the locking bolt 9 onto the connecting piece 8 on the outer walls of the two L-shaped receiving boxes 5 to complete the installation.

[0043] All technical features in this embodiment can be freely combined according to actual needs.

[0044] The above embodiment is a preferred implementation solution of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims

1. A hydraulic cylinder with a dust-proof structure, comprising a cylinder block (1), a piston rod (2) and an oil nozzle (14), characterized in that, The piston rod (2) slides within the cylinder block (1). The nozzle (14) is welded to the front of the cylinder block (1). An extension plate (4) is integrally formed at the top of the cylinder block (1). Above the extension plate (4), a conical scraping block (3) is provided. On the extension plate (4), there are two L-shaped receiving boxes (5). On both of the two L-shaped receiving boxes (5), a baffle (6) is integrally formed. A rubber sheet (7) is bonded to the L-shaped receiving box (5). A connecting mechanism is provided on the outer wall of the L-shaped receiving box (5).

2. The hydraulic cylinder with a dust-proof structure according to claim 1, characterized in that, A notch (11) is formed at the bottom of the L-shaped receiving box (5).

3. A hydraulic cylinder with a dust-proof structure according to claim 1, characterized in that, A limiting block (10) is fixedly installed on the extension plate (4), and the limiting block (10) is matched with the notch (11).

4. A hydraulic cylinder with a dust-proof structure according to claim 1, characterized in that, A connecting rod (12) is fixedly installed at the bottom of the conical scraping block (3), and one end of the connecting rod (12) far from the conical scraping block (3) is fixedly connected to the extension plate (4).

5. A hydraulic cylinder with a dust-proof structure according to claim 1, characterized in that, The connecting mechanism includes a connecting piece (8) fixedly installed on the outer wall of the L-shaped receiving box (5), and a locking bolt (9) is threadedly connected to the connecting piece (8).

6. A hydraulic cylinder with a dust-proof structure according to claim 1, characterized in that, A dust-proof pad (13) is clamped at the top of the cylinder block (1).

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