Low-temperature hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, and discloses a low-temperature hydraulic oil cylinder which comprises a hydraulic oil cylinder body, a second support is fixedly installed at the telescopic end of the hydraulic oil cylinder body, and a first support is fixedly installed at the bottom end of the hydraulic oil cylinder body. When the connection state of the installation base and the hydraulic oil cylinder body is switched, only the rotating button needs to be rotated, the rotating button drives the guide column to slide along the inner wall of the guide groove, when the guide column slides into the tail section of the guide groove, the installation base is rotationally connected with the fixing barrel, and at the moment, the installation base and the hydraulic oil cylinder body are in a rotationally installed state; when the guide column slides into the head section of the guide groove, the installation base is fixedly connected with the fixing barrel, when the connection mode of the installation base and the hydraulic oil cylinder body is switched through the device, a plurality of bolts do not need to be tightened or loosened, the switching process is simple and easy to operate, and operation of a user is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a low-temperature hydraulic cylinder. Background Art

[0002] The hydraulic cylinder is the working medium for the hydraulic system to achieve energy transmission, conversion and control. In addition, it is also responsible for the lubrication, rust prevention, corrosion prevention and cooling of the system. The hydraulic cylinder is generally composed of a cylinder body, a piston, a piston rod, a rubber dust ring, a rubber sealing ring and a cylinder head. The piston, the rubber dust ring and the rubber sealing ring are all arranged in the cylinder body. The piston rod is usually made of metal material, the sealing ring is made of rubber material, and the hydraulic oil has excellent low temperature performance.

[0003] An existing low-temperature hydraulic cylinder (publication number: CN212536308U) has at least the following disadvantages:

[0004] When the two ends of the hydraulic cylinder need to be fixedly connected to the connecting parts, the above patent can be fixed by bolts and nuts through the fixing holes. When the two ends of the hydraulic cylinder need to be hinged to the connecting parts, the push plate is pushed to move on the screw rod, so that the push plate moves close to the fixed plate. The push plate drives the connecting block and the fixed ring to move, so that the fixed ring extends out of the storage groove, and then the tightening nut is rotated to fix the position of the push plate. When the above patent switches the connection mode, it is necessary to tighten and loosen multiple bolts. The process of tightening and loosening multiple bolts is relatively cumbersome and inconvenient for users to operate. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a low-temperature hydraulic cylinder.

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

[0007] A low-temperature hydraulic cylinder comprises a hydraulic cylinder body, a second support is fixedly installed on the telescopic end of the hydraulic cylinder body, a first support is fixedly installed on the bottom end of the hydraulic cylinder body, a fixing cylinder is fixedly installed on the inner walls of the first support and the second support, both ends of the fixing cylinder pass through the outer surfaces of the first support and the second support, a mounting seat is sleeved on the outer surface of the fixing cylinder, the mounting seat and the fixing cylinder are rotatably installed, a limiting assembly is provided between the mounting seat and the fixing cylinder, the limiting assembly comprises a plurality of sliding holes equidistantly penetrated and opened on the circumferential outer surface of the fixing cylinder, the sliding holes are respectively arranged at both ends of the fixing cylinder, a positioning column is slidably installed on the inner wall of the sliding hole, and a positioning hole matching the positioning column is opened on the inner wall of the mounting seat.

[0008] As a further solution of the utility model, a hexagonal sealing cover is fixedly installed on one end of the fixed cylinder, and a hexagonal mounting plate is fixedly installed on the other end of the fixed cylinder. A blind hole is opened on the outer surface of the rotation center of the inner wall of the hexagonal sealing cover, and a sliding rod is slidably installed on the inner wall of the blind hole, and the sliding rod is arranged inside the fixed cylinder.

[0009] As a further solution of the utility model, a plurality of driving rods are fixedly installed at equal intervals on the circumferential outer surface of the sliding rod, a driving groove matching the driving rod is opened at the bottom end of the positioning column, and the driving rod is slidably installed on the inner wall of the driving groove.

[0010] As a further solution of the utility model, the other end of the sliding rod passes through the outer surface of the hexagonal mounting plate and is rotatably installed with a rotating knob, the outer surface of the hexagonal mounting plate is fixedly installed with a sleeve, the rotating knob and the sleeve are arranged on the same axis, the outer surface of the rotating knob is fixedly installed with a guide column, the outer surface of the sleeve is penetrated with a guide groove, and the guide column and the guide groove are slidably installed on the inner wall.

[0011] As a further solution of the utility model, a retaining ring is fixedly installed on the outer surface of the sliding rod near the rotating button, and a spring is sleeved on the outer surface of the sliding rod, and the spring is arranged between the retaining ring and the hexagonal mounting plate.

[0012] As a further solution of the utility model, the guide groove is divided into three sections, and the length of the first section is greater than the length of the last section.

[0013] As a further solution of the utility model, an opening and closing mark is provided on the outer surface of the rotating button.

[0014] As a further solution of the utility model, the angle between the axis of the driving rod and the axis of the sliding rod is 30°.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] When switching the connection state between the mounting seat and the hydraulic cylinder body, it is only necessary to turn the knob so that the knob drives the guide post to slide along the inner wall of the guide groove. When the guide post slides into the end section of the guide groove, the mounting seat and the fixed tube are rotationally connected. At this time, the mounting seat and the hydraulic cylinder body are in a rotationally mounted state. When the guide post slides into the first section of the guide groove, the sliding rod drives the driving rod to slide away from the turning knob under the action of the spring, and the positioning post is inserted into the inside of the positioning hole. At this time, the mounting seat and the fixed tube are fixedly connected. When using this device to switch the connection mode between the mounting seat and the hydraulic cylinder body, there is no need to tighten and loosen multiple bolts. The switching process is simple and easy to operate, which is convenient for users to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a low-temperature hydraulic cylinder proposed by the utility model;

[0018] Figure 2 This is a right side structural schematic diagram of a low temperature hydraulic cylinder proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of a mounting base of a low-temperature hydraulic cylinder proposed by the utility model;

[0020] Figure 4 This is a schematic diagram of a positioning hole of a low-temperature hydraulic cylinder proposed by the utility model;

[0021] Figure 5 This is a schematic diagram of a fixing cylinder of a low-temperature hydraulic oil cylinder proposed by the utility model;

[0022] Figure 6 This is a cross-sectional schematic diagram of a fixing barrel of a low-temperature hydraulic oil cylinder proposed by the utility model;

[0023] Figure 7 A schematic diagram of a sliding rod of a low-temperature hydraulic cylinder proposed by the utility model;

[0024] Figure 8 This is a schematic diagram of a driving rod of a low-temperature hydraulic cylinder proposed by the utility model;

[0025] Fig. 9 The utility model is a schematic diagram of a guide groove of a low-temperature hydraulic cylinder.

[0026] In the figure: 1. Hydraulic cylinder body; 2. First support; 3. Second support; 4. Mounting seat; 5. Fixing cylinder; 6. Hexagonal mounting plate; 7. Sleeve; 8. Turning knob; 9. Hexagonal sealing cover; 10. Sliding hole; 11. Sliding rod; 12. Positioning column; 13. Driving rod; 14. Retaining ring; 15. Spring; 16. Guide groove; 17. Guide column; 18. Opening and closing mark; 19. Positioning hole. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Reference Figure 1-Figure 9 A low-temperature hydraulic cylinder comprises a hydraulic cylinder body 1, a second support 3 is fixedly installed on the telescopic end of the hydraulic cylinder body 1, a first support 2 is fixedly installed on the bottom end of the hydraulic cylinder body 1, a fixing cylinder 5 is fixedly installed on the inner walls of the first support 2 and the second support 3, both ends of the fixing cylinder 5 pass through the outer surfaces of the first support 2 and the second support 3, a mounting seat 4 is sleeved on the outer surface of the fixing cylinder 5, the mounting seat 4 and the fixing cylinder 5 are rotatably installed, a limiting component is provided between the mounting seat 4 and the fixing cylinder 5, the limiting component comprises a plurality of sliding holes 10 equidistantly penetrated and opened on the circumferential outer surface of the fixing cylinder 5, the sliding holes 10 are respectively arranged at both ends of the fixing cylinder 5, a positioning column 12 is slidably installed on the inner wall of the sliding hole 10, and a positioning hole 19 matching the positioning column 12 is opened on the inner wall of the mounting seat 4.

[0031] When switching the connection state between the mounting seat 4 and the hydraulic cylinder body 1, it is only necessary to rotate the knob 8 so that the knob 8 drives the guide column 17 to slide along the inner wall of the guide groove 16. When the guide column 17 slides into the end section of the guide groove 16, the mounting seat 4 is rotationally connected with the fixed tube 5. At this time, the mounting seat 4 and the hydraulic cylinder body 1 are in a rotationally installed state. When the guide column 17 slides into the first section of the guide groove 16, the sliding rod 11 drives the driving rod 13 to slide away from the rotating knob 8 under the action of the spring 15. The positioning column 12 is inserted into the inside of the positioning hole 19. At this time, the mounting seat 4 is fixedly connected with the fixed tube 5. When the device is used to switch the connection mode between the mounting seat 4 and the hydraulic cylinder body 1, there is no need to tighten and loosen multiple bolts. The switching process is simple and easy to operate, which is convenient for users to operate.

[0032] In this embodiment, a hexagonal sealing cover 9 is fixedly installed at one end of the fixed cylinder 5, and a hexagonal mounting plate 6 is fixedly installed at the other end of the fixed cylinder 5. A blind hole is provided on the outer surface of the inner wall rotation center of the hexagonal sealing cover 9, and a sliding rod 11 is slidably installed on the inner wall of the blind hole. The sliding rod 11 is arranged inside the fixed cylinder 5, and a plurality of driving rods 13 are fixedly installed at equal intervals on the circumferential outer surface of the sliding rod 11. A driving groove matching the driving rod 13 is provided at the bottom end of the positioning column 12, and the driving rod 13 is slidably installed on the inner wall of the driving groove. The other end of the sliding rod 11 A rotating button 8 is rotatably installed on the outer surface of the hexagonal mounting plate 6, and a sleeve 7 is fixedly installed on the outer surface of the hexagonal mounting plate 6. The rotating button 8 and the sleeve 7 are arranged on the same axis. A guide column 17 is fixedly installed on the outer surface of the rotating button 8. A guide groove 16 is penetrated through the outer surface of the sleeve 7. The guide column 17 and the guide groove 16 are slidably installed on the inner wall. A retaining ring 14 is fixedly installed on the outer surface of the sliding rod 11 near one end of the rotating button 8. A spring 15 is sleeved on the outer surface of the sliding rod 11, and the spring 15 is arranged between the retaining ring 14 and the hexagonal mounting plate 6.

[0033] The guide post 17 can be tightened to the end of the guide groove 16 by the spring 15 to prevent the position of the guide post 17 from being offset. Under the action of the spring 15, the sliding rod 11 drives the driving rod 13 to slide away from the rotating button 8. The driving rod 13 drives the positioning post 12 to extend out of the outer surface of the fixed tube 5 through the driving groove, and the positioning post 12 is inserted into the interior of the positioning hole 19. At this time, the mounting seat 4 is fixedly connected to the fixed tube 5.

[0034] In this embodiment, the guide groove 16 is divided into three sections, the length of the first section is greater than the length of the last section, and an opening and closing mark 18 is provided on the outer surface of the turning button 8. The open state of the opening and closing mark 18 corresponds to the last section of the guide groove 16, and the closed state of the opening and closing mark 18 corresponds to the first section of the guide groove 16, which respectively correspond to the rotation and fixed states of the mounting seat 4 and the hydraulic cylinder body 1.

[0035] In this embodiment, the included angle between the axis of the driving rod 13 and the axis of the sliding rod 11 is 30°. The 30° setting makes it easier for the driving rod 13 to drive the positioning column 12 to telescopically slide through the driving groove.

[0036] In this embodiment, when the mounting seat 4 is fixedly connected to the fixing tube 5, the mounting seat 4 can be rotated before fixing, so that the mounting seat 4 and the hydraulic cylinder body 1 have multiple fixing angles to choose from, which improves the applicability of the device. The selection range of the angle is related to the number of positioning columns 12 and positioning holes 19, and the number of positioning columns 12 affects the structural strength of the fixing tube 5. In actual production, selective processing can be performed according to the characteristics of the product.

[0037] It should be noted that when the utility model is in use, the user can choose whether the mounting seat 4 and the hydraulic oil cylinder body 1 are rotated or fixed according to the usage situation. By rotating the knob 8, the knob 8 drives the guide column 17 to slide along the inner wall of the guide groove 16. When the guide column 17 slides into the end of the guide groove 16, the rotation direction of the knob 8 is the position where the opening and closing mark 18 is opened. The knob 8 drives the slide bar 11 to slide in the direction close to the knob 8, so that the slide bar 11 drives the driving rod 13 to move close to the knob 8. The driving rod 13 drives the positioning column 12 to retract the internal movement of the fixed tube 5 through the driving groove. At this time, the positioning column 12 leaves the positioning hole 19, and the mounting seat 4 and the fixed The cylinder 5 is rotatably connected, and the guide column 17 can be tightened to the end section of the guide groove 16 by the spring 15 to prevent the position of the guide column 17 from being offset; when the guide column 17 slides into the first section of the guide groove 16, the sliding rod 11 drives the driving rod 13 to slide away from the turning button 8 under the action of the spring 15, and the driving rod 13 drives the positioning column 12 to extend out of the outer surface of the fixed cylinder 5 through the driving groove, and the positioning column 12 is inserted into the inside of the positioning hole 19. At this time, the mounting seat 4 is fixedly connected to the fixed cylinder 5. When the device is used to switch the connection mode between the mounting seat 4 and the hydraulic cylinder body 1, there is no need to tighten and loosen multiple bolts. The switching process is simple and easy to operate, which is convenient for users to operate.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A low-temperature hydraulic cylinder, comprising a hydraulic cylinder body (1), a second support (3) being fixedly mounted on the telescopic end of the hydraulic cylinder body (1), and a first support (2) being fixedly mounted on the bottom end of the hydraulic cylinder body (1), characterized in that: A fixing cylinder (5) is fixedly mounted on the inner walls of the first support (2) and the second support (3); both ends of the fixing cylinder (5) penetrate the outer surfaces of the first support (2) and the second support (3); a mounting seat (4) is sleeved on the outer surface of the fixing cylinder (5); the mounting seat (4) and the fixing cylinder (5) are rotatably mounted; a limiting assembly is arranged between the mounting seat (4) and the fixing cylinder (5); the limiting assembly comprises a plurality of sliding holes (10) equidistantly penetrated and arranged on the circumferential outer surface of the fixing cylinder (5); the sliding holes (10) are respectively arranged at both ends of the fixing cylinder (5); a positioning column (12) is slidably mounted on the inner wall of the sliding hole (10); and a positioning hole (19) matching the positioning column (12) is arranged on the inner wall of the mounting seat (4).

2. A low temperature hydraulic cylinder according to claim 1, characterized in that: A hexagonal sealing cover (9) is fixedly mounted on one end of the fixed cylinder (5), and a hexagonal mounting plate (6) is fixedly mounted on the other end of the fixed cylinder (5). A blind hole is provided on the outer surface of the rotation center of the inner wall of the hexagonal sealing cover (9), and a sliding rod (11) is slidably mounted on the inner wall of the blind hole. The sliding rod (11) is arranged inside the fixed cylinder (5).

3. A low temperature hydraulic cylinder according to claim 2, characterized in that: A plurality of driving rods (13) are fixedly mounted at equal intervals on the circumferential outer surface of the slide rod (11), a driving groove matching the driving rod (13) is formed at the bottom end of the positioning column (12), and the driving rod (13) is slidably mounted on the inner wall of the driving groove.

4. A low temperature hydraulic cylinder according to claim 3, characterized in that: The other end of the slide rod (11) passes through the outer surface of the hexagonal mounting plate (6) and is rotatably mounted with a rotating button (8); the outer surface of the hexagonal mounting plate (6) is fixedly mounted with a sleeve (7); the rotating button (8) and the sleeve (7) are arranged on the same axis; the outer surface of the rotating button (8) is fixedly mounted with a guide column (17); the outer surface of the sleeve (7) is penetrated with a guide groove (16); the guide column (17) and the guide groove (16) are slidably mounted on the inner wall.

5. A low temperature hydraulic cylinder according to claim 4, characterized in that: A retaining ring (14) is fixedly mounted on the outer surface of one end of the slide bar (11) close to the rotating knob (8), and a spring (15) is sleeved on the outer surface of the slide bar (11), and the spring (15) is arranged between the retaining ring (14) and the hexagonal mounting plate (6).

6. A low temperature hydraulic cylinder according to claim 4, characterized in that: The guide groove (16) is divided into three sections, and the length of the first section is greater than the length of the last section.

7. A low temperature hydraulic cylinder according to claim 4, characterized in that: An opening and closing mark (18) is provided on the outer surface of the rotating knob (8).

8. The low-temperature hydraulic cylinder according to claim 3, characterized in that: The included angle between the axis of the driving rod (13) and the axis of the sliding rod (11) is 30°.

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