Pin penetrating oil cylinder

Abstract

The utility model relates to the technical field of hydraulic cylinders, in particular to a pin penetrating oil cylinder. The hydraulic cylinder comprises a cylinder barrel, a piston rod, a piston, an oil inlet, an oil return port and a pin assembly, the piston divides the internal space of the cylinder barrel into a rod cavity and a rodless cavity, the oil inlet is communicated with the rodless cavity, the oil return port is communicated with the rod cavity, the end, away from the piston, of the piston rod extends out of the cylinder barrel, and the pin assembly is detachably connected to the end, away from the piston, of the piston rod. According to the pin penetrating oil cylinder, the independent pin shaft is adopted, the situation that more oil ways are integrated in the oil cylinder is avoided, and the pin shaft and the piston rod can be freely separated, are convenient to disassemble and can be replaced at any time.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder technical field especially relates to a wear pin oil cylinder. BACKGROUND

[0002] The wear pin oil cylinder is a kind of hydraulic element using oil cylinder as pin shaft, which can provide power to wear pin butt joint between movable device and fixed positioning component, to realize quick positioning and locking.

[0003] The existing wear pin oil cylinder structure usually uses cylinder body as pin shaft, and in actual production and application, user needs to frequently plug and unplug pin shaft for replacing working device.Because cylinder body is used as pin shaft, part of elements must be integrated in oil cylinder.For example, oil pipe is welded as pipeline in the inside of piston rod, and then welded into hollow piston rod, which greatly increases the processing cost of oil cylinder.Meanwhile, due to the welding position in the inside of oil cylinder, oil cylinder may not work.

[0004] In addition, when oil cylinder is damaged, if cylinder body as pin shaft is damaged, cylinder spare part needs to be replaced at this time, and if piston rod is damaged, welded piston rod also needs to be replaced, with high cost.Furthermore, when user wants to replace pin shaft, oil cylinder needs to be detached from complete machine, cylinder body and piston rod are separated, and then replaced, with high cost of manpower and material resources in the whole process. UTILITY MODEL CONTENTS

[0005] In view of at least one of the above technical problems, the utility model provides a wear pin oil cylinder and a suspension system with the same, so that pin shaft and piston rod can be freely separated, convenient to disassemble, and can be replaced at any time.

[0006] The utility model provides a wear pin oil cylinder, which comprises a cylinder barrel, a piston rod, a piston, an oil inlet, an oil return port and a pin assembly, the inside space of the cylinder barrel is divided into a rod cavity and a rodless cavity by the piston, the oil inlet is communicated with the rodless cavity, the oil return port is communicated with the rod cavity, one end of the piston rod away from the piston extends out of the cylinder barrel, and the pin assembly is detachably connected to one end of the piston rod away from the piston.

[0007] Further, one end of the piston rod away from the piston is provided with external threads, and the corresponding position in the inside of the pin assembly is provided with internal threads, so that the piston rod and the pin assembly are detachably connected through thread connection.

[0008] Further, the pin assembly comprises a pin shaft, a lubricating structure and a locking structure, and the lubricating structure and the locking structure are arranged in the inside of the pin shaft.

[0009] Further, the locking structure comprises a locking screw, a through hole radially arranged on the pin shaft, and an inner thread arranged on the inner wall of the through hole and matched with the outer thread of the locking screw.

[0010] Further, the locking structure further comprises a gasket arranged between the locking screw and the piston rod.

[0011] Further, the lubricating structure comprises a lubricating oil channel and an oil cup, one end of the lubricating oil channel is communicated with the outside, and the other end is blocked by the oil cup.

[0012] Further, the lubricating oil channel is arranged in multiple channels, the opening of the lubricating oil channel communicated with the outside is arranged annularly on the pin shaft, and the openings are arranged at intervals along the axial direction of the pin shaft.

[0013] Further, a stepped portion is arranged at the abutting position of the piston rod and the pin shaft, and the end of the stepped portion away from the pin shaft is provided with oppositely arranged planes.

[0014] Further, a guide sleeve is further arranged, the guide sleeve is arranged at one end of the cylinder barrel close to the pin assembly, and a sealing assembly is arranged between the guide sleeve and the piston rod.

[0015] Further, the pin shaft is a columnar structure.

[0016] The piston rod and the pin shaft of the pin-penetrating oil cylinder are detachably connected through thread connection, the locking structure of the locking screw and the gasket is adopted, the locking and anti-loosening effects are achieved, the external thread on the piston rod is not damaged, the pin shaft can be replaced for multiple times, the pin-penetrating oil cylinder adopts a separate pin shaft, the arrangement of the integrated oil circuit in the oil cylinder is avoided, the pin shaft and the piston rod can be freely separated, the disassembly is convenient, and the pin shaft can be replaced at any time. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 It is a structure schematic view of the pin-penetrating oil cylinder in the embodiments of the present application.

[0019] Figure 2 is a structure diagram of a pin shaft of the pin-through oil cylinder in the embodiment of the utility model;

[0020] Figure 3 is a structure state diagram of a piston rod part of the pin-through oil cylinder in the embodiment of the utility model;

[0021] Figure 4 is a structure diagram of state one of the pin-through oil cylinder in the embodiment of the utility model;

[0022] Figure 5 is a structure diagram of state two of the pin-through oil cylinder in the embodiment of the utility model.

[0023] Explanation of reference signs:

[0024] 1, cylinder barrel; 2, piston rod; 3, piston; 4, oil inlet; 5, oil return; 6, pin assembly; 7, guide sleeve; 8, sealing assembly; 9, locked part; 11, rod cavity; 12, rodless cavity; 21, step part; 22, plane; 61, pin shaft; 62, locking screw; 63, through hole; 64, gasket; 65, lubricating oil channel; 66, oil cup; 91, pin hole; 651, opening. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0026] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can be present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are made only for purposes of illustration, and are not intended to be limiting.

[0027] In this document, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", and the like are used to describe the orientation or position of the technical solutions based on the orientation or position shown in the drawings, and are only for the purpose of expressing the technical solutions clearly and conveniently, and therefore cannot be understood as a limitation on the utility model.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for describing particular embodiments only and is not intended to be limiting of the application. The use herein of the terms "including", "comprising", "having" and the like are meant to encompass the items listed thereafter as well as other items.

[0029] Referring to Figure 1 The utility model provides a kind of wear pin oil cylinder, including cylinder 1, piston rod 2, piston 3, oil inlet 4, oil return 5, guide sleeve 7 and pin assembly 6. Wherein, piston 3 is located in cylinder 1 and is arranged at the one end of piston rod 2, piston 3 will the internal space of cylinder 1 be divided into rod cavity 11 and rodless cavity 12, oil inlet 4 is communicated with rodless cavity 12, and oil return 5 is communicated with rod cavity 11. Referring to Figure 1 And Figure 5 When oil inlet 4 enters oil, oil enters rodless cavity 12, and piston rod 2 and piston 3 are pushed out, and pin assembly 6 arranged at the one end of piston rod 2 is pushed out, and pin assembly 6 enters the pin hole 91 of the locked part 9 of host machine, and plays the role of wear pin butt joint, positioning and locking;Referring to Figure 1 And Figure 4 When oil return 5 enters oil, oil enters rod cavity 11, and piston rod 2 and piston 3 are retracted, and at this time, spare parts of the locked part 9 of host machine can be replaced, or damaged parts of wear pin oil cylinder can be replaced.

[0030] Guide sleeve 7 is arranged at the one end of cylinder 1 close to pin assembly 6, and sealing assembly 8 is arranged between guide sleeve 7 and piston rod 2. Guide sleeve 7 plays the role of guiding and supporting to piston rod 2, and sealing assembly 8 can prevent oil in rod cavity 11 from leaking.

[0031] The one end of piston rod 2 away from piston 3 extends out of cylinder 1, and pin assembly 6 is detachably connected to the one end of piston rod 2 away from piston 3. In a specific embodiment, the one end of piston rod 2 away from piston 3 is provided with external thread, and the corresponding position inside pin assembly 6 is provided with internal thread, and piston rod 2 and pin assembly 6 are detachably connected through thread connection, so that pin assembly 6 and piston rod 2 can be freely separated, and are convenient to disassemble and can be replaced at any time.

[0032] Referring to Figure 1 And Figure 2 Pin assembly 6 includes pin shaft 61, lubricating structure and locking structure, and the lubricating structure and the locking structure are arranged inside the pin shaft 61. Wherein, pin shaft 61 is columnar structure, and needs to be matched with the cross-sectional shape of pin hole 91, for example, cylindrical structure, hexagonal prism structure, etc., which is not specifically limited here.

[0033] The locking structure comprises a locking screw 62 and a gasket 64. More specifically, the pin shaft 61 is provided with a through hole 63 arranged in the radial direction, and the inner wall of the through hole 63 is provided with internal threads matched with the external threads of the locking screw 62. The locking screw 62 and the pin shaft 61 are more firmly connected by being provided with the locking screw 62. When the pin shaft 61 is damaged, the locking screw 62 is simply unscrewed, the pin shaft 61 is rotated to disengage the internal threads of the pin shaft 61 from the external threads of the piston rod 2, and the pin shaft 61 can be disassembled for replacement of spare parts. The gasket 64 is arranged between the locking screw 62 and the piston rod 2. In a specific embodiment, the gasket 64 is made of nylon. After the pin shaft 61 and the piston rod 2 are threadedly connected, the locking screw 62 is tightened to make the gasket 64 abut against the outer surface of the piston rod 2, so as to achieve the locking and anti-loosening effect. Since the gasket 64 is made of soft material, the external threads on the piston rod 2 are not damaged in the process of tightening the locking screw 62, so that the pin shaft 61 can be replaced multiple times. In addition, the locking screw 62 can also be fixed by means of glue coating and anti-loosening punching.

[0034] The lubricating structure comprises a lubricating oil channel 65 and an oil cup 66. One end of the lubricating oil channel 65 is in communication with the outside, and the other end is blocked by the oil cup 66. Figure 1 and Figure 5 As shown in the drawings, the axial length of the pin shaft 61 is slightly greater than the length of the pin hole 91 of the locked member 9, that is, when the piston rod 2 extends to the maximum stroke, the end face of the pin shaft 61 away from the piston rod 2 protrudes out of the pin hole 91 of the locked member 9. At this time, the oil cup 66 arranged on the end face of the pin shaft 61 can be used to supply lubricating oil at any time to lubricate the penetrating portion, thereby achieving the effects of lubrication and rust prevention. The lubricating oil channel 65 can be arranged in multiple channels. The openings 651 in communication with the outside of the lubricating oil channel 65 are arranged in a ring shape on the pin shaft 61. The multiple openings 651 are arranged in the axial direction of the pin shaft 61. The contact area between the lubricating oil and the penetrating portion can be increased, and the effects of lubrication and rust prevention are better. In a specific embodiment, the lubricating oil channel 65 is arranged in multiple channels. For example, two or three channels, etc., which are not specifically limited herein.

[0035] When one end of the piston rod 2 is threaded, the piston rod 2 is a rotary body, and it is difficult to clamp and add torque to tighten the pin shaft 61 and the piston rod 2. Therefore, as shown in Figure 2 and Figure 3 , a stepped portion 21 is arranged at the abutting position of the piston rod 2 and the pin shaft 61. The end of the stepped portion 21 away from the pin shaft 61 is provided with a flat surface 22 arranged oppositely. The flat surface 22 is machined by milling process, which facilitates the effective application of torque and facilitates the installation between the pin shaft 61 and the piston rod 2.

[0036] In conclusion, the piston rod 2 of the pin-penetrating oil cylinder and the pin shaft 61 are detachably connected through thread connection; meanwhile, the locking structure of the locking screw 62 and the gasket 64 is adopted, which plays the locking and anti-loosening role, and does not damage the external thread on the piston rod 2, so that the pin shaft 61 can be replaced for many times. The pin-penetrating oil cylinder adopts the separate pin shaft 61, avoids the integration of more oil paths in the oil cylinder; the pin shaft 61 and the piston rod 2 can be freely separated, are convenient to disassemble, and can be replaced at any time. When the pin shaft 61 is damaged, it is convenient to replace, and the spare part price of the pin shaft 61 is lower, at this time, the whole cylinder body does not need to be replaced, and the machining difficulty and cost are reduced. In addition, the lubricating oil channel 65 is arranged in the pin shaft 61, and the lubrication and rust prevention functions are increased.

[0037] Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A pinning ram, characterized by, The cylinder (1), the piston rod (2), the piston (3), the oil inlet (4), the oil return (5) and the pin assembly (6), the piston (3) divides the internal space of the cylinder (1) into a rod cavity (11) and a rodless cavity (12), the oil inlet (4) is communicated with the rodless cavity (12), the oil return (5) is communicated with the rod cavity (11), the piston rod (2) extends out of the cylinder (1) at one end away from the piston (3), and the pin assembly (6) is detachably connected at one end of the piston rod (2) away from the piston (3).

2. The pinning ram of claim 1, wherein, The piston rod (2) is provided with external threads at one end away from the piston (3), and the corresponding position inside the pin assembly (6) is provided with internal threads, so that the piston rod (2) and the pin assembly (6) are detachably connected through threaded connection.

3. The pinning ram of claim 1, wherein, The pin assembly (6) comprises a pin shaft (61), a lubricating structure and a locking structure, and the lubricating structure and the locking structure are arranged inside the pin shaft (61).

4. The pinning ram of claim 3, wherein, The locking structure comprises a locking screw (62), a through hole (63) is formed on the pin shaft (61) in a radial direction, and the inner wall of the through hole (63) is provided with internal threads matched with the external threads of the locking screw (62).

5. The pinning ram of claim 4, wherein, The locking structure further comprises a gasket (64), and the gasket (64) is arranged between the locking screw (62) and the piston rod (2).

6. The pinning ram of claim 3, wherein, The lubricating structure comprises a lubricating oil channel (65) and an oil cup (66), one end of the lubricating oil channel (65) is communicated with the outside, and the other end is blocked by the oil cup (66).

7. The pinning ram of claim 6, wherein, The lubricating oil channel (65) is provided with multiple channels, and the opening (651) of the lubricating oil channel (65) communicated with the outside is arranged in a ring shape on the pin shaft (61), and the opening (651) is arranged in an axial direction of the pin shaft (61).

8. The pinning ram of claim 3, wherein, The abutting portion of the piston rod (2) and the pin shaft (61) is provided with a stepped portion (21), and the stepped portion (21) has oppositely arranged flat surfaces (22) at one end away from the pin shaft (61).

9. The pinning ram of claim 1 wherein, Further comprising a guide sleeve (7), the guide sleeve (7) is arranged at one end of the cylinder (1) close to the pin assembly (6), and a sealing assembly (8) is arranged between the guide sleeve (7) and the piston rod (2).

10. The pinning ram of claim 3, wherein, The pin shaft (61) is a columnar structure.

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