Hydraulic cylinder with dustproof structure

Abstract

The utility model relates to the technical field of hydraulic cylinders, and discloses a hydraulic cylinder with a dustproof structure, which comprises a cylinder seat, a cylinder body is welded at the top of the cylinder seat, a cylinder cover is detachably connected at the top of the cylinder body, a dustproof component is arranged on the outer wall of the cylinder cover, and a protective component is arranged on the outer wall of the cylinder seat. The dustproof assembly comprises a mounting seat, a bolt hole is formed in the top of the cylinder cover, a fixing bolt is arranged on the outer wall of the mounting seat, and a sliding groove is formed in the inner wall of the mounting seat. The hydraulic cylinder with the dustproof structure is provided with the mounting base, the bolt hole, the fixing bolt, the sliding groove, the spring, the sliding block, the scraping piece and the rubber pad, the scraping piece is tightly attached to the surface of the plug rod through the elastic force of the spring, the scraping piece scrapes off oil dirt and dust on the plug rod through the rubber pad along with movement of the plug rod, and the dustproof effect is achieved; the dustproof capability is improved, and the requirements of people are met.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder with a dust-proof structure. Background Technique

[0002] As an important actuator in a hydraulic system, a hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and makes a linear reciprocating motion, and is widely used in various mechanical equipment; however, in a complex and changeable working environment, during the telescopic process of the piston rod of the hydraulic cylinder, dust is easily attached to the piston rod, and the accumulation of more dust will affect the sealing performance of the hydraulic cylinder and shorten the service life of the hydraulic cylinder.

[0003] The prior art patent document with the publication number CN216642623U provides a hydraulic cylinder, which cools the hydraulic cylinder by continuously introducing a cooling medium into the first flow channel and the second flow channel, avoiding the influence of high temperature on the hydraulic cylinder, thereby improving the service life and working efficiency of the hydraulic cylinder.

[0004] In the above prior art, although the hydraulic cylinder can be cooled, during the use process, the dust-proof measure of the hydraulic cylinder often uses a sealing ring for dust-proofing. Only using a sealing ring for dust-proofing has an unsatisfactory dust-proof effect and cannot meet people's needs. Therefore, we need a hydraulic cylinder with a dust-proof structure. Content of the Utility Model

[0005] The purpose of the utility model is to provide a hydraulic cylinder with a dust-proof structure to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, the utility model provides the following technical solution: A hydraulic cylinder with a dust-proof structure, including a cylinder base, the top of the cylinder base is welded with a cylinder body, and the top of the cylinder body is detachably connected with a cylinder head. A dust-proof component is arranged on the outer wall of the cylinder head, and a protection component is arranged on the outer wall of the cylinder base;

[0007] The dust-proof component includes a mounting seat, bolt holes are opened at the top of the cylinder head, fixing bolts are arranged on the outer wall of the mounting seat, a sliding groove is opened on the inner wall of the mounting seat, a spring is fixedly connected to the inner wall of the sliding groove, and one end of the spring is fixedly connected with a sliding block. One end of the sliding block is fixedly connected with a scraping blade, and a rubber pad is fixedly connected to the inner wall of the scraping blade;

[0008] The protection component includes a threaded groove, a screw rod is threadedly connected to the inner wall of the threaded groove, one end of the screw rod is fixedly connected with a long rod, a fixing cover is detachably connected to the outer wall of the cylinder head, and fastening bolts are arranged on the outer wall of the fixing cover. A through groove is opened on the inner wall of the fixing cover.

[0009] Preferably, a piston is slidably connected to the inner wall of the cylinder block, and a piston rod is fixedly connected to the outer wall of the piston.

[0010] Preferably, the cylinder head and the mounting seat form a fixed structure through fixing bolts, and one end of the fixing bolt is threaded through the mounting seat and extends into the bolt hole for connection.

[0011] Preferably, the mounting seat and the slider form an elastic structure through a spring, and one end of the slider extends into the chute and is connected to the spring.

[0012] Preferably, the number of the scraping blades is two, and the two scraping blades are symmetrically arranged with the perpendicular bisector of the piston rod as the axis of symmetry.

[0013] Preferably, the cylinder base and the screw rod form a threaded structure through a threaded groove, and one end of the screw rod extends into the threaded groove for connection.

[0014] Preferably, the number of the screw rods is multiple, and the multiple screw rods are equidistantly arranged on the cylinder base.

[0015] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0016] First, the present utility model is provided with a mounting seat, a bolt hole, a fixing bolt, a chute, a spring, a slider, a scraping blade and a rubber pad. The scraping blade is closely attached to the surface of the piston rod through the elastic force of the spring. As the piston rod moves, the scraping blade scrapes off the oil stains and dust on the piston rod through the rubber pad, achieving the effect of dust prevention. By cooperating with the sealing ring in the cylinder head, the dust prevention ability is improved, meeting the needs of people.

[0017] Second, the present utility model is provided with a threaded groove, a screw rod, a long rod, a fixing cover, a fastening bolt and a through groove. The long rod can be well threadedly installed on the cylinder base through the screw rod. When being impacted by the outside world, the cylinder block can be protected through the arrangement of multiple long rods. When the long rod is damaged and needs to be replaced, only the damaged long rod needs to be replaced, reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the front view structural schematic diagram of the present utility model;

[0019] Figure 2 is the structural schematic diagram of the cylinder base and the cylinder block of the present utility model;

[0020] Figure 3 is the present utility model Figure 2 the enlarged structural schematic diagram at A in;

[0021] Figure 4 is the structural schematic diagram of the cylinder head and the fixing cover of the present utility model;

[0022] Figure 5For the present utility model Figure 4 The enlarged structural schematic diagram at position B in the present utility model

[0023] Wherein: 1. Cylinder base; 2. Cylinder body; 3. Cylinder head; 4. Dust-proof component; 401. Mounting seat; 402. Bolt hole; 403. Fixing bolt; 404. Chute; 405. Spring; 406. Slide block; 407. Scraping blade; 408. Rubber pad; 5. Protection component; 501. Thread groove; 502. Screw rod; 503. Long rod; 504. Fixed cover; 505. Fastening bolt; 506. Through groove; 6. Piston; 7. Piston rod Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , a hydraulic cylinder with a dust-proof structure, including a cylinder base 1, a cylinder body 2 is welded to the top of the cylinder base 1, and a cylinder head 3 is detachably connected to the top of the cylinder body 2. A dust-proof component 4 is arranged on the outer wall of the cylinder head 3, and a protection component 5 is arranged on the outer wall of the cylinder base 1; the dust-proof component 4 includes a mounting seat 401, a bolt hole 402 is opened on the top of the cylinder head 3, a fixing bolt 403 is arranged on the outer wall of the mounting seat 401, a chute 404 is opened on the inner wall of the mounting seat 401, a spring 405 is fixedly connected to the inner wall of the chute 404, one end of the spring 405 is fixedly connected to a slide block 406, one end of the slide block 406 is fixedly connected to a scraping blade 407, and a rubber pad 408 is fixedly connected to the inner wall of the scraping blade 407; the protection component 5 includes a thread groove 501, a screw rod 502 is threadedly connected to the inner wall of the thread groove 501, one end of the screw rod 502 is fixedly connected to a long rod 503, a fixed cover 504 is detachably connected to the outer wall of the cylinder head 3, a fastening bolt 505 is arranged on the outer wall of the fixed cover 504, and a through groove 506 is opened on the inner wall of the fixed cover 504

[0026] Through the above technical solution, the scraping piece 407 is closely attached to the surface of the plug rod 7 by the elastic force of the spring 405. As the plug rod 7 moves, the scraping piece 407 scrapes off the oil stains and dust on the plug rod 7 through the rubber pad 408, achieving the effect of dust prevention. By cooperating with the sealing ring in the cylinder head 3, the dust prevention ability is improved, meeting people's needs; the long rod 503 can be well threadedly installed on the cylinder block 1 through the screw rod 502. When impacted by the outside world, the cylinder block 2 can be protected by the arrangement of multiple long rods 503. When a long rod 503 is damaged and needs to be replaced, only the damaged long rod 503 needs to be replaced, reducing the maintenance cost.

[0027] Specifically, a piston 6 is slidably connected to the inner wall of the cylinder block 2, and a plug rod 7 is fixedly connected to the outer wall of the piston 6.

[0028] Through the above technical solution, a sealing ring is provided on the piston 6, and a sealing ring is provided at the connection between the cylinder head 3 and the plug rod 7, strengthening the sealing effect, which can well prevent dust and leakage. A sealing ring is provided at the connection between the cylinder head 3 and the cylinder block 2, which is a prior art and improves the sealing effect of the device.

[0029] Specifically, the cylinder head 3 and the mounting seat 401 form a fixed structure through the fixing bolt 403, and one end of the fixing bolt 403 is threadedly passed through the mounting seat 401 and extends into the bolt hole 402 for connection.

[0030] Through the above technical solution, the connection effect between the cylinder head 3, the fixing bolt 403 and the mounting seat 401 is improved. The number of the fixing bolts 403 is two, which can well fix the mounting seat 401 on the cylinder head 3, facilitating installation and disassembly. The number of the mounting seats 401 is two, and they are symmetrically arranged on the cylinder head 3.

[0031] Specifically, the mounting seat 401 and the slider 406 form an elastic structure through the spring 405, and one end of the slider 406 extends into the chute 404 to be connected with the spring 405.

[0032] Through the above technical solution, the connection effect between the mounting seat 401, the spring 405 and the slider 406 is strengthened. The slider 406 transmits the elastic force of the spring 405 to the scraping piece 407, so that the scraping piece 407 is closely attached to the plug rod 7 by the elastic force of the spring 405.

[0033] Specifically, the number of the scraping pieces 407 is two, and the two scraping pieces 407 are symmetrically arranged with the perpendicular bisector of the plug rod 7 as the axis of symmetry.

[0034] Through the above technical solution, the two scraping pieces 407 are arranged one on the left and one on the right, and their shapes and sizes are designed according to the plug rod 7, which can well scrape off the oil stains and dust on the plug rod 7.

[0035] Specifically, the cylinder block 1 and the screw rod 502 form a threaded structure through the threaded groove 501, and one end of the screw rod 502 extends into the threaded groove 501 for connection.

[0036] Through the above technical solution, the connection effect between the cylinder block 1, the threaded groove 501 and the screw rod 502 is strengthened. The number of the threaded grooves 501 is multiple, and the threads in the threaded groove 501 match the threads on the screw rod 502, which is convenient for the threaded installation of the screw rod 502.

[0037] Specifically, the number of the screw rods 502 is multiple, and the multiple screw rods 502 are arranged on the cylinder block 1 at equal distances.

[0038] Through the above technical solution, multiple long rods 503 are arranged around the cylinder block 2 at equal distances, which can provide good protection for the cylinder block 2.

[0039] During use, first, the scraping blades 407 arranged on the left and right are closely attached to the piston rod 7 by the elastic force of the spring 405. When the piston 6 moves to drive the piston rod 7 to move, through the movement of the piston rod 7, the scraping blades 407 scrape off the oil stains and dust on the piston rod 7 through the rubber pads 408, achieving the effect of dust prevention. The rubber pads 408 serve as the contact layer between the scraping blades 407 and the piston rod 7. With their softness and elasticity, they can better fit the surface of the piston rod 7, while reducing the wear on the piston rod 7 and effectively scraping off the oil stains and dust. When subjected to an external impact, through the arrangement of multiple long rods 503, protection can be provided for the cylinder block 2. When a long rod 503 is damaged and needs to be replaced, only the damaged long rod 503 needs to be replaced, reducing the maintenance cost. When the long rod 503 needs to be replaced, the fastening bolts 505 on the fixed cover 504 are disassembled, the fixed cover 504 is disassembled and removed, the long rod 503 is rotated, the long rod 503 drives the screw rod 502 to rotate, and the screw rod 502 is rotated out of the threaded groove 501 of the cylinder block 1 to complete the disassembly of the screw rod 502. The screw rod 502 on the new long rod 503 is threadedly installed into the threaded groove 501, the through groove 506 on the fixed cover 504 is aligned with the long rod 503 for installation, the fixed cover 504 is sleeved on the long rod 503 to make the installation of the long rod 503 more stable, and the fixed cover 504 is fixed by using the fastening bolts 505, thus completing all the work. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of this application is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder with a dust-proof structure, comprising a cylinder base (1), characterized in that: The cylinder block (2) is welded to the top of the cylinder block seat (1), and the cylinder head (3) is detachably connected to the top of the cylinder block (2). A dust-proof component (4) is arranged on the outer wall of the cylinder head (3), and a protection component (5) is arranged on the outer wall of the cylinder block seat (1). The dust-proof component (4) includes a mounting seat (401). A bolt hole (402) is formed in the top of the cylinder head (3). A fixing bolt (403) is arranged on the outer wall of the mounting seat (401). A sliding groove (404) is formed in the inner wall of the mounting seat (401). A spring (405) is fixedly connected to the inner wall of the sliding groove (404). One end of the spring (405) is fixedly connected to a sliding block (406). One end of the sliding block (406) is fixedly connected to a scraping blade (407). A rubber pad (408) is fixedly connected to the inner wall of the scraping blade (407). The protection component (5) includes a threaded groove (501). A screw rod (502) is threadedly connected to the inner wall of the threaded groove (501). One end of the screw rod (502) is fixedly connected to a long rod (503). A fixing cover (504) is detachably connected to the outer wall of the cylinder head (3). A fastening bolt (505) is arranged on the outer wall of the fixing cover (504). A through groove (506) is formed in the inner wall of the fixing cover (504).

2. The hydraulic cylinder with a dust-proof structure according to claim 1, wherein: A piston (6) is slidably connected to the inner wall of the cylinder block (2), and a piston rod (7) is fixedly connected to the outer wall of the piston (6).

3. A hydraulic cylinder with a dust-proof structure according to claim 1, characterized in that: The cylinder head (3) and the mounting seat (401) form a fixed structure through the fixing bolt (403), and one end of the fixing bolt (403) threadedly passes through the mounting seat (401) and extends into the bolt hole (402) for connection.

4. A hydraulic cylinder with a dust-proof structure according to claim 1, wherein: The mounting seat (401) and the sliding block (406) form an elastic structure through the spring (405), and one end of the sliding block (406) extends into the sliding groove (404) and is connected to the spring (405).

5. A hydraulic cylinder with a dust-proof structure according to claim 1, characterized in that: The number of the scraping blades (407) is two, and the two scraping blades (407) are symmetrically arranged with the perpendicular bisector of the piston rod (7) as the axis of symmetry.

6. A hydraulic cylinder with a dust-proof structure according to claim 1, characterized in that: The cylinder block seat (1) and the screw rod (502) form a threaded structure through the threaded groove (501), and one end of the screw rod (502) extends into the threaded groove (501) for connection.

7. A hydraulic cylinder with a dust-proof structure according to claim 1, characterized in that: The number of the screw rods (502) is multiple, and the multiple screw rods (502) are equidistantly arranged on the cylinder block seat (1).

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