Guiding device of hydraulic oil cylinder

Abstract

The utility model discloses a hydraulic oil cylinder guiding device which comprises a second fixing disc arranged on one side of a first fixing disc, a first connecting hole is formed in the center of the first fixing disc, a second connecting hole is formed in the center of the second fixing disc, a first telescopic cavity is formed in the first fixing disc, and a second telescopic cavity is formed in the second fixing disc. Fixing blocks are arranged in the four first telescopic cavities; the second telescopic cavities are formed in the second fixing disc, and limiting blocks are arranged in the four second telescopic cavities; the through holes are formed in the four corners of the first fixing disc, a connecting rod is arranged on one side of the second fixing disc, the first fixing disc of the guiding device is fixedly arranged outside an oil cylinder body in a sleeving mode, the second fixing disc is arranged outside a piston rod in a sleeving mode, the limiting blocks make contact with the outer wall of the piston rod, and the guiding effect is achieved when the piston rod stretches out and draws back. The guiding function of oil cylinder piston rods with different radiuses can be met, and the guiding effect of the hydraulic oil cylinder is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic oil cylinder guide device. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy, performing linear reciprocating motion. Its simple structure and reliable operation eliminate the need for a reduction gear when implementing reciprocating motion, eliminate transmission backlash, and ensure smooth motion. Therefore, it is widely used in the hydraulic systems of various machines. The piston rod of a hydraulic cylinder used in a hydraulic system continuously grows, and the rod itself, due to the limitations of the material it is made of, increases in toughness. Consequently, when the force is offset, the rod can bend at the contact point between the rod and the cylinder body.

[0003] The Chinese patent publication number is CN117847043B, and the authorization announcement date is June 28, 2024. A hydraulic cylinder guide device, belonging to the field of hydraulic cylinders, is used for cylinder guidance and includes a cylinder sleeve with a guide mounting plate, a guide outer plate, and a piston rod. A guide sleeve is provided between the guide mounting plate and the guide outer plate, and the guide sleeves are evenly distributed around the central axis of the piston rod. A ball connecting rod is coaxially provided inside the guide sleeve, and the bottom end of the ball connecting rod extends from the guide sleeve. A spring is provided at the position where the ball connecting rod is located inside the guide sleeve. The end of the ball connecting rod extending from the guide sleeve is connected to a ball seat body, and a guide ball is rotatably provided inside the ball seat body. The guide sleeve moves away from or closer to the piston rod under the action of an adjusting gear. This application can simplify the structural complexity of the hydraulic cylinder external guide device while improving the guiding function of the hydraulic cylinder piston rod, helping to reduce the manufacturing cost of the equipment and facilitate subsequent maintenance.

[0004] The existing guide device can only guide the cylinder piston rod of a specific size, and the guide structure cannot be adjusted. It cannot bear the force well when guiding the cylinder piston rods of different radius sizes, which reduces the guiding effect of the cylinder piston rod and cannot meet the use requirements. Utility Model Content

[0005] The purpose of the present utility model is to provide a hydraulic cylinder guide device to solve the problem in the above background technology that the existing guide device can only guide the cylinder piston rod of a specific size, the guide structure cannot be adjusted, and it cannot bear the force well when guiding the cylinder piston rods of different radius sizes, thereby reducing the guiding effect of the cylinder piston rod and failing to meet the use requirements.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a hydraulic cylinder guide device, comprising a first fixed plate, and further comprising:

[0007] A second fixed disk is provided on one side of the first fixed disk, a first connecting hole is provided at the center of the first fixed disk, a second connecting hole is provided at the center of the second fixed disk, a first telescopic cavity is provided inside the first fixed disk, four first telescopic cavities are provided, and the four first telescopic cavities are equidistantly arranged on the first fixed disk, the first telescopic cavity is connected to the first connecting hole, a fixing block is provided inside each of the four first telescopic cavities, and the fixing block is slidably connected to the first fixed disk;

[0008] A second telescopic cavity is provided inside the second fixed plate, and there are four second telescopic cavities, which are equidistantly arranged on the second fixed plate. The second telescopic cavity is connected to the second connecting hole, and a limit block is provided inside each of the four second telescopic cavities, and the limit block is slidably connected to the second fixed plate;

[0009] Through holes are provided at the four corners of the first fixed plate, and there are four through holes. A connecting rod is provided on one side of the second fixed plate, and there are four connecting rods. One end of the connecting rod is fixedly connected to the second fixed plate. The connecting rod is provided through the through hole, and the connecting rod is slidably connected to the first fixed plate.

[0010] Preferably, a first locking bolt is provided on the outside of the first fixed disk, and there are four first locking bolts, which are equidistantly arranged on the outside of the first fixed disk. The first locking bolt is threadedly connected to the first fixed disk, and one end of the first locking bolt is rotatably connected to the fixed block.

[0011] Preferably, an electric push rod is provided inside each of the four second telescopic cavities, and two ends of the electric push rod are fixedly connected to the second fixed plate and the limit block respectively.

[0012] Preferably, one end of each of the four fixing blocks is provided with a rubber pad, and the rubber pad is connected to the fixing block as a whole.

[0013] Preferably, second locking bolts are provided on both sides of the first fixed plate, four second locking bolts are provided, and the second locking bolts are threadedly connected to the first fixed plate, the second locking bolts are provided corresponding to the through holes, and flat surfaces are provided on the side walls of the four connecting rods, and the flat surfaces are provided corresponding to the second locking bolts.

[0014] Preferably, one end of each of the four limit blocks is provided with a wear-resistant pad, and the wear-resistant pad is connected to the limit block as a whole.

[0015] Preferably, one end of each of the four limit blocks is provided with a ball, and the ball is rollingly connected to the limit block and the wear-resistant pad.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The utility model device is provided with a first fixed plate, a second fixed plate, a first locking bolt, a fixed block, a limit block and an electric push rod. The first fixed plate is sleeved on the outside of the hydraulic cylinder body. The first locking bolt is rotated to drive the fixed block to move. The first fixed plate is connected and fixed to the cylinder body with the help of the fixed block, which makes it convenient to sleeve the first fixed plate on the outside of the hydraulic cylinder body of different sizes, install the guide device and the hydraulic cylinder, and the second fixed plate is sleeved on the outside of the hydraulic cylinder piston rod. The electric push rod drives the limit block to extend and retract, changes the distance between the limit blocks, and brings the limit block into contact with the piston rod, plays a guiding role when the hydraulic cylinder piston rod is extended and retracted, thereby improving the use effect of the hydraulic cylinder;

[0018] 2. The utility model device is provided with a connecting rod and a second locking bolt. The connecting rod is slidably connected to the first fixed plate, and the connecting rod connects the first fixed plate and the second fixed plate into one body. The distance between the first fixed plate and the second fixed plate can be changed by stretching the connecting rod. The second fixed plate is placed at the required position of the hydraulic cylinder piston rod for guidance. The second locking bolt is rotated to push one end of the second locking bolt into a flat surface to closely contact the connecting rod, thereby limiting the position of the connecting rod.

[0019] 3. The utility model device is provided with a wear-resistant pad and a ball. The wear-resistant pad increases the wear resistance of the end face of the limit block and reduces the wear of the guide structure. The ball directly contacts the outer wall of the hydraulic cylinder piston rod, which can reduce the extension and contraction resistance of the hydraulic cylinder piston rod, further reduce wear, and improve the guiding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a cross-sectional view of the connection between the fixing block and the first fixing plate of the present invention;

[0022] Figure 3 This is a cross-sectional view of the connection between the limit block and the second fixed plate of the utility model;

[0023] Figure 4 This is a diagram showing the connection relationship between the connecting rod and the first fixed plate of the present utility model.

[0024] In the figure: 1. First fixed plate; 2. Second fixed plate; 3. First connecting hole; 4. Second connecting hole; 5. Limit block; 6. Through hole; 7. Connecting rod; 8. First locking bolt; 9. Second locking bolt; 10. Fixed block; 11. First telescopic cavity; 12. Rubber pad; 13. Flat surface; 14. Second telescopic cavity; 15. Electric push rod; 16. Wear-resistant pad; 17. Ball. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] See also Figure 1-4 The present invention provides an embodiment of a hydraulic cylinder guide device, comprising a first fixed plate 1, and further comprising:

[0027] The second fixed disk 2 is arranged on one side of the first fixed disk 1, and a first connecting hole 3 is provided at the center of the first fixed disk 1, and a second connecting hole 4 is provided at the center of the second fixed disk 2. A first telescopic cavity 11 is provided inside the first fixed disk 1, and four first telescopic cavities 11 are provided, and the four first telescopic cavities 11 are equidistantly arranged on the first fixed disk 1, and the first telescopic cavity 11 is connected to the first connecting hole 3. A fixing block 10 is provided inside the four first telescopic cavities 11, and the fixing block 10 is slidingly connected to the first fixed disk 1, and a first locking bolt 8 is provided on the outside of the first fixed disk 1, and four first locking bolts 8 are provided, and the four first locking bolts 8 are equidistantly arranged on the outside of the first fixed disk 1, the first locking bolt 8 is threadedly connected to the first fixed disk 1, and one end of the first locking bolt 8 is rotatably connected to the fixing block 10;

[0028] A second telescopic cavity 14 is provided inside the second fixed disk 2. There are four second telescopic cavities 14, and the four second telescopic cavities 14 are equidistantly arranged on the second fixed disk 2. The second telescopic cavity 14 is connected to the second connecting hole 4. A limit block 5 is provided inside each of the four second telescopic cavities 14, and the limit block 5 is slidably connected to the second fixed disk 2. An electric push rod 15 is provided inside each of the four second telescopic cavities 14, and the two ends of the electric push rod 15 are fixedly connected to the second fixed disk 2 and the limit block 5 respectively;

[0029] A through hole 6 is provided at the four corners of the first fixed disk 1, and there are four through holes 6. A connecting rod 7 is provided on one side of the second fixed disk 2. Four connecting rods 7 are provided, and one end of the connecting rod 7 is fixedly connected to the second fixed disk 2. The connecting rod 7 and the through hole 6 are arranged to pass through, and the connecting rod 7 is slidingly connected to the first fixed disk 1. Second locking bolts 9 are provided on both sides of the first fixed disk 1, and four second locking bolts 9 are provided, and the second locking bolts 9 are threadedly connected to the first fixed disk 1. The second locking bolts 9 are arranged corresponding to the through holes 6, and flat surfaces 13 are provided on the side walls of the four connecting rods 7, and the flat surfaces 13 are arranged corresponding to the second locking bolts 9.

[0030] During use: the first fixed plate 1 is mounted on the outside of the hydraulic cylinder body, the first locking bolt 8 is rotated to drive the fixed block 10 to move, and the first fixed plate 1 is connected and fixed to the cylinder body with the help of the fixed block 10, and the second fixed plate 2 is mounted on the outside of the hydraulic cylinder piston rod. The electric push rod 15 drives the limit block 5 to extend and retract, changes the distance between the limit blocks 5, and makes the limit block 5 contact with the piston rod, which plays a guiding role when the hydraulic cylinder piston rod is extended and retracted, thereby improving the use effect of the hydraulic cylinder; the connecting rod 7 is slidably connected to the first fixed plate 1, and the distance between the first fixed plate 1 and the second fixed plate 2 can be changed by stretching the connecting rod 7, and the second fixed plate 2 is placed at the required position of the hydraulic cylinder piston rod for guiding, and the second locking bolt 9 is rotated to push one end of it into the flat surface 13 to make close contact with the connecting rod 7, thereby limiting the connecting rod 7.

[0031] See also Figure 1 and Figure 2 One end of each of the four fixing blocks 10 is provided with a rubber pad 12, and the rubber pad 12 is connected to the fixing block 10 as a whole. The rubber pad 12 plays a protective role on the connection part between the fixing block 10 and the hydraulic cylinder body.

[0032] See also Figure 1 and Figure 3 One end of each of the four limit blocks 5 is provided with a wear-resistant pad 16, and the wear-resistant pad 16 is connected to the limit block 5 as a whole. One end of each of the four limit blocks 5 is provided with a ball 17, and the ball 17 is rollingly connected to the limit block 5 and the wear-resistant pad 16. The wear-resistant pad 16 increases the wear resistance of the end face of the limit block 5 and reduces the wear of the guide structure. The ball 17 directly contacts the outer wall of the hydraulic cylinder piston rod, which can reduce the extension and contraction resistance of the hydraulic cylinder piston rod, further reduce wear, and improve the guiding effect.

[0033] Working principle: The first fixed plate 1 is mounted on the outside of the hydraulic cylinder body, and the first locking bolt 8 is rotated to drive the fixed block 10 to move. The first fixed plate 1 is connected and fixed to the cylinder body with the help of the fixed block 10. The second fixed plate 2 is mounted on the outside of the hydraulic cylinder piston rod. The electric push rod 15 drives the limit block 5 to extend and retract, changes the distance between the limit blocks 5, and makes the limit block 5 contact with the piston rod, which plays a guiding role when the hydraulic cylinder piston rod is extended and retracted, thereby improving the use effect of the hydraulic cylinder; the connecting rod 7 is slidably connected to the first fixed plate 1. By stretching the connecting rod 7, the distance between the first fixed plate 1 and the second fixed plate 2 can be changed, and the second fixed plate 2 is placed at the required position of the hydraulic cylinder piston rod for guiding. The second locking bolt 9 is rotated to push one end of it into the flat surface 13 to make close contact with the connecting rod 7, thereby limiting the connecting rod 7; the wear-resistant pad 16 increases the wear resistance of the end face of the limit block 5, reduces the wear of the guide structure, and the ball 17 directly contacts the outer wall of the hydraulic cylinder piston rod, which can reduce the extension and retraction resistance of the hydraulic cylinder piston rod, further reduce wear, and improve the guiding effect.

[0034] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0035] 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 these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic cylinder guide device, comprising a first fixed plate (1), characterized in that: Also includes: A second fixed disk (2) is provided on one side of the first fixed disk (1), a first connecting hole (3) is provided at the center of the first fixed disk (1), a second connecting hole (4) is provided at the center of the second fixed disk (2), a first telescopic cavity (11) is provided inside the first fixed disk (1), four first telescopic cavities (11) are provided, and the four first telescopic cavities (11) are equidistantly provided on the first fixed disk (1), the first telescopic cavity (11) is connected to the first connecting hole (3), a fixing block (10) is provided inside each of the four first telescopic cavities (11), and the fixing block (10) is slidably connected to the first fixed disk (1); A second telescopic cavity (14) is provided inside the second fixed disk (2), four second telescopic cavities (14) are provided, and the four second telescopic cavities (14) are equidistantly arranged on the second fixed disk (2), the second telescopic cavity (14) is connected to the second connecting hole (4), and a limiting block (5) is provided inside each of the four second telescopic cavities (14), and the limiting block (5) is slidably connected to the second fixed disk (2); Through holes (6) are provided at the four corners of the first fixed plate (1), and there are four through holes (6). A connecting rod (7) is provided on one side of the second fixed plate (2), and there are four connecting rods (7). One end of the connecting rod (7) is fixedly connected to the second fixed plate (2), and the connecting rod (7) and the through holes (6) are connected, and the connecting rod (7) is slidably connected to the first fixed plate (1).

2. A hydraulic cylinder guide device according to claim 1, characterized in that: A first locking bolt (8) is provided on the outside of the first fixed disk (1), and four first locking bolts (8) are provided, and the four first locking bolts (8) are equidistantly arranged on the outside of the first fixed disk (1). The first locking bolt (8) is threadedly connected to the first fixed disk (1), and one end of the first locking bolt (8) is rotatably connected to the fixed block (10).

3. The hydraulic cylinder guide device according to claim 1, characterized in that: An electric push rod (15) is provided inside each of the four second telescopic cavities (14), and two ends of the electric push rod (15) are fixedly connected to the second fixed disk (2) and the limit block (5) respectively.

4. The hydraulic cylinder guide device according to claim 1, characterized in that: One end of each of the four fixing blocks (10) is provided with a rubber pad (12), and the rubber pad (12) and the fixing block (10) are connected as a whole.

5. The hydraulic cylinder guide device according to claim 1, characterized in that: Second locking bolts (9) are provided on both sides of the first fixed plate (1), four second locking bolts (9) are provided, and the second locking bolts (9) are threadedly connected to the first fixed plate (1), the second locking bolts (9) are provided corresponding to the through holes (6), and the side walls of the four connecting rods (7) are provided with flat surfaces (13), and the flat surfaces (13) are provided corresponding to the second locking bolts (9).

6. The hydraulic cylinder guide device according to claim 1, characterized in that: One end of each of the four limiting blocks (5) is provided with a wear-resistant pad (16), and the wear-resistant pad (16) and the limiting block (5) are connected as a whole.

7. The hydraulic cylinder guide device according to claim 6, characterized in that: One end of each of the four limiting blocks (5) is provided with a ball (17), and the ball (17) is rollingly connected to the limiting block (5) and the wear-resistant pad (16).

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