Sleeve telescopic oil cylinder adopting novel guide sleeve telescopic core tube structure

Abstract

The utility model provides a sleeve telescopic oil cylinder adopting a novel guide sleeve telescopic core tube structure. Comprising a cylinder barrel, a cylinder bottom arranged at the bottom of the cylinder barrel, a piston rod contained in the cylinder barrel, a piston used for driving the piston rod, a cylinder outer oil pipe connected to the cylinder bottom and a supporting plate arranged at the end of the piston. According to the utility model, the structure is improved, the length of the rod head of the piston rod is effectively shortened, and the weight of the piston rod is reduced, so that the inertia of the piston rod is reduced, and the friction between the piston rod and the inner wall of the cylinder barrel is greatly reduced after the inertia is smaller; the service life of the oil cylinder is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hydraulic oil cylinder, concretely relates to a sleeve telescopic oil cylinder adopting novel guide sleeve telescopic core pipe structure. BACKGROUND

[0002] The oil cylinder is hydraulic cylinder, and the hydraulic cylinder is a linear motion type executing element outputting force and proportional to the effective area of a piston and pressure difference of both sides thereof. It functions to convert hydraulic energy into mechanical energy. The input of the hydraulic cylinder is the flow and pressure of fluid, and the output is linear motion speed and force. The piston of the hydraulic cylinder can complete linear reciprocating motion, and the output linear displacement is limited. The hydraulic cylinder is an energy conversion device converting hydraulic energy into mechanical energy of linear reciprocating motion. The hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device are determined according to specific application occasions, and the other devices are indispensable. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides a sleeve telescopic oil cylinder adopting novel guide sleeve telescopic core pipe structure to solve the problems mentioned in the background.

[0004] To solve the above technical problems, the utility model provides the following technical scheme:

[0005] A sleeve telescopic oil cylinder adopting novel guide sleeve telescopic core pipe structure, including cylinder, cylinder bottom being arranged at the bottom of cylinder, piston rod being contained in the inside of cylinder, piston being used for driving piston rod, cylinder outer oil pipe being connected to cylinder bottom, support plate being arranged at the end of piston, telescopic core pipe guide sleeve being installed on support plate and telescopic core pipe being contained in telescopic core pipe guide sleeve, the outer periphery of telescopic core pipe guide sleeve is sleeved with telescopic sleeve pipe.

[0006] Preferably, sealing piece one is arranged between the telescopic core pipe guide sleeve and the telescopic sleeve pipe.

[0007] Preferably, sealing piece two is arranged between the telescopic core pipe guide sleeve and the telescopic core pipe.

[0008] Preferably, the telescopic core pipe is welded with the cylinder bottom, and there is a weld seam between the telescopic core pipe and the cylinder bottom, and the weld seam is an angle weld seam.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] 1, adopt support plate to replace piston nut and threaded gland, telescopic core pipe guide sleeve and support plate sleeve joint, compared with traditional installation structure and better sealing effect,

[0011] 2. The improved structure effectively shortens the length of the piston rod head, reduces the weight of the piston rod, and makes the inertia of the piston rod smaller, so that the friction between the piston rod and the inner wall of the cylinder is greatly reduced, and the service life of the oil cylinder is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further described in connection with the drawings.

[0013] Figure 1 It is the whole structure schematic view of the utility model embodiment;

[0014] In the figure: 1 - sealing piece one, 2 - sealing piece two, 3 - cylinder, 4 - A1 oil passage, 5 - C oil passage, 6 - B1 oil passage, 7 - piston rod, 8 - telescopic sleeve, 9 - piston, 10 - telescopic core pipe guide sleeve, 11 - support plate, 12 - telescopic core pipe, 13 - cylinder outer oil pipe, 14 - cylinder bottom, 15 - A2 oil passage, 16 - B2 oil passage. DETAILED DESCRIPTION

[0015] The technical scheme in the utility model embodiment will be described clearly and completely in connection with the drawings in the utility model embodiment. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0016] Embodiment 1

[0017] Please refer to Figure 1 A telescopic sleeve telescopic oil cylinder with a novel telescopic core pipe guide sleeve structure comprises a cylinder 3, a cylinder bottom 14 arranged at the bottom of the cylinder 3, a piston 9 rod 7 accommodated in the cylinder 3, a piston 9 for driving the piston 9 rod 7, a cylinder outer oil pipe 13 connected to the cylinder bottom 14, a support plate 11 arranged at the end of the piston 9, a telescopic core pipe guide sleeve 10 mounted on the support plate 11, and a telescopic core pipe 12 accommodated in the telescopic core pipe guide sleeve 10. The outer periphery of the telescopic core pipe guide sleeve 10 is sleeved with a telescopic sleeve 8.

[0018] Sealing piece one 1 is arranged between the telescopic core pipe guide sleeve 10 and the telescopic sleeve 8, and sealing piece two 2 is arranged between the telescopic core pipe guide sleeve 10 and the telescopic core pipe 12, so as to improve the sealing performance.

[0019] The utility model mainly is used in the occasion of two oil cylinders constitute upper and lower telescopic arm cylinder, the utility model is used as upper arm oil cylinder, is equipped with A1 oil passage 4 and B1 oil passage 6 and is located in telescopic core pipe 12 C oil passage 5, lower arm oil cylinder is equipped with A2 oil passage 15 and B2 oil passage 16, from A1 oil passage 4 oil inlet, piston 9 promotes piston 9 stem 7 to stretch out, B1 oil passage 6 oil inlet, promotes piston 9 to withdraw, C oil passage 5 is located on cylinder outer oil pipe 13, cylinder outer oil pipe 13 is communicated A2 oil passage 15, B2 oil passage 16 is communicated with the rod cavity of upper arm oil cylinder.

[0020] Embodiment 2

[0021] On the basis of embodiment 1, the telescopic core pipe 12 is welded with the cylinder bottom 14, there is a weld seam between the telescopic core pipe 12 and the cylinder bottom 14, and the weld seam is an angle weld seam.

[0022] It should be noted that the terms "comprising", "including", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0023] Although embodiments of the utility model have been shown and described, it will be apparent to those having ordinary skill in the art that a number of changes, modifications, replacements, and variations of the embodiments can be made without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A telescopic cylinder with a new type of telescopic core pipe structure, characterized in that: The device comprises a cylinder, a cylinder bottom arranged at the bottom of the cylinder, a piston rod accommodated in the cylinder, a piston for driving the piston rod, an external oil pipe connected to the cylinder bottom, a support plate arranged at the end of the piston, a telescopic core pipe guide sleeve mounted on the support plate, and a telescopic core pipe accommodated in the telescopic core pipe guide sleeve, and the outer periphery of the telescopic core pipe guide sleeve is sleeved with a telescopic sleeve pipe.

2. The telescopic cylinder with a telescopic core pipe structure of a new type of guide sleeve according to claim 1, characterized in that: A sealing piece one is arranged between the telescopic core pipe guide sleeve and the telescopic sleeve pipe.

3. The telescopic cylinder with a telescopic core pipe structure of a new type of guide sleeve according to claim 2, characterized in that: A sealing piece two is arranged between the telescopic core pipe guide sleeve and the telescopic core pipe.

4. The telescopic cylinder with a telescopic core pipe structure of a new type of guide sleeve according to claim 3, characterized in that: The telescopic core pipe is welded with the cylinder bottom, and there is a welding seam between the telescopic core pipe and the cylinder bottom, which is an angle welding seam.

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