Full-stroke adjustable oil cylinder

Abstract

The utility model discloses a full-stroke adjustable oil cylinder which comprises a cylinder body, a rodless cavity oil port, a piston, a piston rod, a stroke adjusting sleeve, a rod cavity oil port, a stroke adjusting sleeve locking nut, a piston rod lug ring locking nut and a piston rod lug ring. The outer circle of the stroke adjusting sleeve is matched with an inner hole of the guide sleeve and is sealed through a guide sleeve sealing ring; the stroke adjusting sleeve is installed on the piston rod through threads, the position of the stroke adjusting sleeve locking nut and the position of the piston rod are locked through threads, the position of the piston rod lug ring is installed on the piston rod through threads, and the position of the piston rod lug ring locking nut and the position of the piston rod are locked through threads. The piston is connected with the piston rod, and the distance between the stroke adjusting sleeve and the piston is changed by rotating the stroke adjusting sleeve to adjust the stroke of the oil cylinder. The utility model has the advantages of simple structure, high flexibility, convenience in processing, convenience in stroke control and full-stroke adjustment.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil cylinders, and in particular relates to an oil cylinder with full-stroke adjustment. Background Art

[0002] Most of the existing oil cylinder strokes cannot be adjusted. Conventional oil cylinders often change the oil cylinder stroke by adding a spacer between the piston and the guide sleeve in the cylinder barrel, which requires the oil cylinder to be disassembled and the spacer to be installed. In some oil cylinder use conditions, the oil cylinder needs to stop frequently and accurately at different positions. In this case, the oil cylinder stroke needs to be adjusted, and the oil cylinder stroke needs to be adjusted during equipment commissioning and operation without disassembling the oil cylinder. Utility Model Content

[0003] The utility model aims to provide a full-stroke adjustable oil cylinder to solve the above technical problems.

[0004] The utility model provides a full-stroke adjustable oil cylinder, comprising a cylinder body, a rodless cavity oil port, a piston, a piston rod, a stroke adjustment sleeve, a rod cavity oil port, a stroke adjustment sleeve locking nut, a piston rod earring locking nut, and a piston rod earring;

[0005] The outer circle of the stroke adjustment sleeve cooperates with the inner hole of the guide sleeve and is sealed by the guide sleeve sealing ring; the stroke adjustment sleeve is installed on the piston rod through threads, the stroke adjustment sleeve locking nut and the piston rod are locked in position through threads, the piston rod earring is installed on the piston rod through threads, and the piston rod earring locking nut and the piston rod are locked in position through threads; the piston is connected to the piston rod, and the cylinder stroke is adjusted by rotating the stroke adjustment sleeve to change the distance with the piston.

[0006] Furthermore, a sealing ring and an external thread are provided on the outer circle of the piston rod, and the major diameter of the external thread is smaller than the outer circle diameter of the piston rod.

[0007] Furthermore, the piston rod and the piston are processed integrally, or connected via threads.

[0008] Furthermore, the left section of the inner hole of the stroke adjustment sleeve is a light hole that cooperates with the sealing ring to form a seal, and the right section is an internal thread that cooperates with the external thread of the piston rod.

[0009] Furthermore, a step is provided at the left end of the stroke adjustment sleeve, the diameter of which is smaller than the inner diameter of the cylinder body and leaves an oil-passing gap, and a milled flat or hexagonal wrench position is provided at the right end of the stroke adjustment sleeve.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model has the advantages of simple structure, high flexibility, easy processing, convenient stroke control and full stroke adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a fully-stroke adjustable oil cylinder of the utility model.

[0013] Figure 2 This is a diagram of the utility model showing the maximum stroke extension state of the oil cylinder.

[0014] Figure 3 This is a diagram of the utility model in which the oil cylinder is extended and retracted after the stroke is adjusted.

[0015] Figure 4 This is a diagram of the utility model when the oil cylinder stroke is zero.

[0016] Numbers in the figure:

[0017] 1-cylinder body; 2-rodless chamber oil port; 3-piston; 4-piston rod; 5-stroke adjustment sleeve; 6-rod chamber oil port; 7-guide sleeve; 8-stroke adjustment sleeve locking nut; 9-piston rod earring locking nut; 10-piston rod earring; 11-sealing ring; 12-milled flat or external hexagonal wrench position; 13-external thread. DETAILED DESCRIPTION

[0018] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0019] Ginseng Figure 1 As shown, this embodiment provides a full-stroke adjustable oil cylinder, including a cylinder body 1, a rodless chamber oil port 2, a piston 3, a piston rod 4, a stroke adjustment sleeve 5, a rod chamber oil port 6, a guide sleeve 7, a stroke adjustment sleeve locking nut 8, a piston rod earring locking nut 9, and a piston rod earring 10; the outer circle of the stroke adjustment sleeve 5 cooperates with the inner hole of the guide sleeve 7, and is sealed by the guide sleeve sealing ring; the stroke adjustment sleeve 5 is installed on the piston rod 4 by threads, the stroke adjustment sleeve locking nut 8 and the piston rod 4 are locked in position by threads, the piston rod earring 10 is installed on the piston rod 4 by threads, and the piston rod earring locking nut 9 and the piston rod 4 are locked in position by threads; the piston 3 is connected to the piston rod 4, and the cylinder stroke is adjusted by rotating the stroke adjustment sleeve 5 to change the distance from the piston 3.

[0020] The fully-stroke adjustable oil cylinder has the advantages of simple structure, high flexibility, easy processing, convenient stroke control and full-stroke adjustment.

[0021] In this embodiment, a sealing ring 11 and an external thread 13 are provided on the outer circumference of the piston rod 4 , and the major diameter of the external thread 13 is smaller than the outer diameter of the piston rod 4 .

[0022] In this embodiment, the piston rod 4 is integrally processed with the piston 3 or connected with the piston rod 4 through threads.

[0023] In this embodiment, the left section of the inner hole of the stroke adjustment sleeve 5 is a smooth hole that cooperates with the sealing ring 11 to form a seal, and the right section is an internal thread that cooperates with the external thread 13 of the piston rod.

[0024] In this embodiment, a step is provided at the left end of the stroke adjustment sleeve 5, the diameter of which is smaller than the inner diameter of the cylinder body 1 and leaves enough oil flow clearance, and a milled flat or hexagonal wrench position 12 is provided at the right end of the stroke adjustment sleeve 5.

[0025] Ginseng Figure 2 As shown, loosen the locking nut 8 of the stroke adjustment sleeve, rotate the stroke adjustment sleeve until the left end face fits with the right end face of the piston, and lock the locking nut of the stroke adjustment sleeve. Oil enters the rodless chamber oil port 2, and oil returns to the rod chamber oil port 6. The cylinder extends, the right end face of the stroke adjustment sleeve step fits with the left end face of the guide sleeve, and the cylinder stops moving. At this time, the cylinder is working at the maximum stroke.

[0026] Ginseng Figure 3 As shown, loosen the travel adjustment sleeve locking nut 8, rotate the travel adjustment sleeve 5 to the desired position, and lock it with the travel adjustment sleeve locking nut 8. The rodless chamber oil port 2 enters the oil, and the rod chamber oil port 6 returns the oil. The cylinder extends, the right end face of the stroke adjustment sleeve step fits with the left end face of the guide sleeve, and the cylinder stops moving. At this time, the cylinder works for the adjusted stroke, and adjusting the cylinder stroke does not affect the installation distance.

[0027] Loosen the locking nut 8 of the stroke adjustment sleeve, rotate the stroke adjustment sleeve 5 until the left end face fits with the right end face of the piston 3, and lock the locking nut 8 of the stroke adjustment sleeve. The oil enters the rodless chamber oil port 2, and the oil returns to the rod chamber oil port 6. The cylinder extends to the required working position, loosen the locking nut 8 of the stroke adjustment sleeve, rotate the stroke adjustment sleeve 5 until the right end face fits with the left end face of the guide sleeve, and the cylinder stroke is set. After that, the cylinder will work according to this stroke. If the stroke needs to be readjusted, repeat the above method.

[0028] Ginseng Figure 4 As shown, by rotating the stroke adjustment sleeve 5 to change the distance from the piston 3, the cylinder stroke can be adjusted from zero to the maximum stroke in real time.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A fully adjustable oil cylinder, characterized in that: It comprises a cylinder body (1), a rodless chamber oil port (2), a piston (3), a piston rod (4), a stroke adjustment sleeve (5), a rod chamber oil port (6), a guide sleeve (7), a stroke adjustment sleeve locking nut (8), a piston rod earring locking nut (9), and a piston rod earring (10); The outer circle of the stroke adjustment sleeve (5) matches the inner hole of the guide sleeve (7) and is sealed by a guide sleeve sealing ring; the stroke adjustment sleeve (5) is installed on the piston rod (4) by threading, the stroke adjustment sleeve locking nut (8) and the piston rod (4) are locked in position by threading, the piston rod earring (10) is installed on the piston rod (4) by threading, and the piston rod earring locking nut (9) and the piston rod (4) are locked in position by threading; the piston (3) is connected to the piston rod (4), and the stroke of the oil cylinder is adjusted by rotating the stroke adjustment sleeve (5) to change the distance with the piston (3).

2. The fully-stroke adjustable oil cylinder according to claim 1, characterized in that: A sealing ring (11) and an external thread (13) are provided on the outer circle of the piston rod (4); the major diameter of the external thread (13) is smaller than the outer circle diameter of the piston rod (4).

3. The fully adjustable oil cylinder according to claim 2, characterized in that: The piston rod (4) and the piston (3) are processed integrally or connected via threads.

4. The fully adjustable oil cylinder according to claim 1, characterized in that: The left section of the inner hole of the stroke adjustment sleeve (5) is a smooth hole, which cooperates with the sealing ring (11) to form a seal, and the right section is an internal thread, which cooperates with the external thread (13) of the piston rod.

5. The fully-stroke adjustable oil cylinder according to claim 1, characterized in that: The left end of the stroke adjustment sleeve (5) is provided with a step, the diameter of which is smaller than the inner diameter of the cylinder body (1) and leaves an oil-passing gap, and the right end of the stroke adjustment sleeve (5) is provided with a milling flat or external hexagonal wrench position (12).

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