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CN-121993453-A - Novel telescopic cylinder group

CN121993453ACN 121993453 ACN121993453 ACN 121993453ACN-121993453-A

Abstract

The invention relates to a novel telescopic cylinder group, and belongs to the technical field of hydraulic systems. The hydraulic cylinder comprises a hydraulic cylinder shell, wherein a hydraulic inner cylinder body is connected inside the hydraulic cylinder shell in a sliding manner, a first push rod is connected inside the hydraulic inner cylinder body in a sliding manner, an extrusion piston is installed at one end of the first push rod, an oil inlet pipe is communicated with the bottom end of the inside of the hydraulic cylinder shell, an oil outlet pipe is communicated with the top end of the inside of the hydraulic cylinder shell, the oil inlet pipe and the oil outlet pipe are respectively communicated with the hydraulic inner cylinder body, an inner sealing assembly is arranged at the other end of the extrusion piston and used for sealing the inside of the hydraulic cylinder, and a locking assembly is arranged at the upper end of the hydraulic inner cylinder body and used for locking the first push rod. According to the invention, through the combination of the piston cavities distributed in the annular array, the V-shaped locking seats and the obtuse isosceles triangle wedge-shaped locking blocks, the tail end deflection caused by single-point stress unbalance is avoided.

Inventors

  • HAN QINGMING
  • SHEN BIN
  • SHEN DA

Assignees

  • 无锡市一源液压机械有限公司

Dates

Publication Date
20260508
Application Date
20260408

Claims (10)

  1. 1. The novel telescopic oil cylinder group is characterized by comprising a hydraulic oil cylinder shell (1), wherein the hydraulic oil cylinder shell (1) is internally and slidably connected with a hydraulic inner cylinder body (2), a first push rod (3) is slidably connected in the hydraulic inner cylinder body (2), an extrusion piston (4) is arranged at one end of the first push rod (3), an oil inlet pipe (9) is communicated with the inner bottom end of the hydraulic oil cylinder shell (1), an oil outlet pipe (10) is communicated with the inner top end of the hydraulic oil cylinder shell (1), and the oil inlet pipe (9) and the oil outlet pipe (10) are respectively communicated with the hydraulic inner cylinder body (2); the other end of the extrusion piston (4) is provided with an inner sealing component (5), and the inner sealing component (5) is used for sealing the interior of the oil cylinder; the upper end of the hydraulic inner cylinder body (2) is provided with a locking assembly (6), and the locking assembly (6) is used for locking the first push rod (3); An outer sealing assembly (7) is arranged at the bottom end of the locking assembly (6), and the outer sealing assembly (7) is used for sealing the first push rod (3); The outside of locking subassembly (6) is provided with drain subassembly (8), drain subassembly (8) are used for leading-in locking subassembly (6) with hydraulic oil.
  2. 2. The novel telescopic cylinder group according to claim 1, wherein the inner sealing assembly (5) comprises a microporous elastic ring (501), the other end of the extrusion piston (4) is embedded with the microporous elastic ring (501), and a spiral groove (502) is formed in the outer wall of the microporous elastic ring (501).
  3. 3. The novel telescopic cylinder group according to claim 2, wherein the inner sealing assembly (5) further comprises a spiral sealing strip (503), the inner wall of the spiral groove (502) is adhered with the spiral sealing strip (503), and the outer walls of the two ends of the extrusion piston (4) are embedded with first sealing rings (504).
  4. 4. The novel telescopic cylinder group according to claim 1, wherein the locking assembly (6) comprises an annular mounting seat (601), the annular mounting seat (601) is fixedly connected to the outer wall of the top end of the hydraulic inner cylinder body (2), a plurality of piston cavities (602) are formed in the inner wall of the top end of the annular mounting seat (601), and a plurality of piston cavities (602) are annularly arrayed on the top end of the annular mounting seat (601).
  5. 5. The novel telescopic cylinder group according to claim 4, wherein the locking assembly (6) further comprises a plurality of micro push rods (604), the plurality of micro push rods (604) are respectively and slidably connected in the piston cavity (602), one end of each micro push rod (604) is fixedly connected with a sealing piston (603), and each sealing piston (603) is slidably connected with the inner wall of the piston cavity (602).
  6. 6. The novel telescopic cylinder group according to claim 5, wherein the locking assembly (6) further comprises a plurality of V-shaped locking seats (605), the V-shaped locking seats (605) are respectively and fixedly connected to the other ends of the mini push rods (604), soft cushions (606) are adhered to the inner sides of the V-shaped locking seats (605), a plurality of first return springs (609) are fixedly connected to the two ends of the outer sides of the V-shaped locking seats (605), and the other ends of the first return springs (609) are fixedly connected with the inner walls of the annular mounting seats (601).
  7. 7. The novel telescopic cylinder group of claim 6, wherein the locking assembly (6) further comprises a plurality of spherical extrusion rods (610), the spherical extrusion rods (610) are respectively and fixedly connected to the bottom ends of the V-shaped locking seats (605), a plurality of wedge-shaped locking blocks (607) are adhered to the inner side of each soft cushion (606), herringbone guide grooves (608) are formed in the inner side of each soft cushion (606), and the wedge-shaped locking blocks (607) and the herringbone guide grooves (608) are distributed alternately.
  8. 8. The novel telescopic cylinder group according to claim 4, wherein the outer sealing assembly (7) comprises an annular wedge seat (701), the annular wedge seat (701) is arranged at the inner bottom end of the annular mounting seat (601), a second sealing ring (702) is embedded in the bottom end of the annular wedge seat (701), a plurality of sliding blocks (703) are fixedly connected to the outer part of the annular wedge seat (701), and a second reset spring (704) is fixedly connected to the bottom end of each sliding block (703).
  9. 9. The novel telescopic cylinder group according to claim 8, wherein the outer sealing assembly (7) further comprises a plurality of guide grooves (705), the guide grooves (705) are respectively formed in the inner bottom ends of the annular mounting seats (601), each guide groove (705) is slidably connected with the outer wall of the sliding block (703), and the bottom ends of the second return springs (704) are fixedly connected with the inner bottom ends of the guide grooves (705).
  10. 10. The novel telescopic cylinder group according to claim 4, wherein the liquid guide assembly (8) comprises a plurality of corrugated liquid guide pipes (801), the corrugated liquid guide pipes (801) are respectively communicated with the inside of the piston cavity (602), the other ends of the corrugated liquid guide pipes (801) are communicated with an annular liquid storage seat (804), the annular liquid storage seat (804) is fixedly connected with the outer wall of the hydraulic cylinder shell (1), a connecting pipe (802) is communicated with the inside of the annular liquid storage seat (804), a first electromagnetic valve (803) is installed in the connecting pipe (802), and the other ends of the connecting pipe (802) are communicated with an oil inlet pipe (9).

Description

Novel telescopic cylinder group Technical Field The invention relates to the technical field of hydraulic systems, in particular to a novel telescopic cylinder group. Background The telescopic cylinder group is a hydraulic cylinder with a special structure, and is composed of two or more cylinders which are nested together, and when the telescopic cylinder group works, the internal cylinder is driven by hydraulic pressure to extend or retract step by step according to a fixed sequence. The body of rod of telescopic cylinder group on the market at present relies on cylinder inner wall direction and single piston drive more, lack the terminal location of pertinence and prevent the skew structure, under multistage flexible, heavy load or high frequency vibration operating mode, when the body of rod stretches out to maximum stroke, because the cooperation clearance of body of rod and cylinder can increase gradually because of long-term friction, lead to the offset accumulation, and then influence equipment operation precision, the seal structure of telescopic cylinder adopts static seal piece more simultaneously, the sealed effect relies on initial pretightning force, when the hydro-cylinder is in high-pressure operating condition, the seal piece is easy to be pressed to the cooperation clearance by pressure, lead to internal leakage or leak outward, the clearance that produces when the terminal skew of body of rod can further aggravate the seepage simultaneously, not only cause hydraulic oil extravagant, polluted environment, still can lead to hydraulic system pressure loss, influence the power take off efficiency of hydro-cylinder. Therefore, the application provides a novel telescopic cylinder group to meet the demands. Disclosure of Invention The invention aims to solve the technical problem of providing a novel telescopic cylinder group so as to solve the problem that a rod body at the tail end of the telescopic cylinder group is easy to deviate, and a sealing element is easy to be pressed to a fit clearance by pressure, so that internal leakage or external leakage is caused. In order to solve the technical problems, the invention provides the following technical scheme: A novel telescopic oil cylinder set comprises a hydraulic oil cylinder shell, wherein a hydraulic inner cylinder body is connected inside the hydraulic oil cylinder shell in a sliding mode, a first push rod is connected inside the hydraulic inner cylinder body in a sliding mode, an extrusion piston is installed at one end of the first push rod, an oil inlet pipe is communicated with the inner bottom end of the hydraulic oil cylinder shell, an oil outlet pipe is communicated with the inner top end of the hydraulic oil cylinder shell, the oil inlet pipe and the oil outlet pipe are respectively communicated with the hydraulic inner cylinder body, an inner sealing assembly is arranged at the other end of the extrusion piston and used for sealing the inner portion of an oil cylinder, a locking assembly is arranged at the upper end of the hydraulic inner cylinder body and used for locking the first push rod, an outer sealing assembly is arranged at the bottom end of the locking assembly and used for sealing the first push rod, and a liquid guiding assembly is arranged outside the locking assembly and used for guiding hydraulic oil into the locking assembly. Optionally, the inner sealing component comprises a micropore elastic ring, the other end of the extrusion piston is embedded with the micropore elastic ring, and the outer wall of the micropore elastic ring is provided with a spiral groove. Optionally, the inner sealing assembly further comprises a spiral sealing strip, the inner wall of the spiral groove is adhered with the spiral sealing strip, and the outer walls of the two ends of the extrusion piston are embedded with first sealing rings. Optionally, the locking subassembly is including annular mount pad, annular mount pad fixed connection is at the top outer wall of the interior barrel of hydraulic pressure, a plurality of piston chamber has been seted up to the top inner wall of annular mount pad, a plurality of piston chamber annular array is in the top of annular mount pad. Optionally, the locking assembly further comprises a plurality of micro push rods, the micro push rods are respectively and slidably connected in the piston cavity, one end of each micro push rod is fixedly connected with a sealing piston, and each sealing piston is slidably connected with the inner wall of the piston cavity. Optionally, the locking assembly further comprises a plurality of V-shaped locking seats, the plurality of V-shaped locking seats are respectively and fixedly connected to the other end of the miniature push rod, soft cushions are adhered to the inner sides of the V-shaped locking seats, a plurality of first reset springs are fixedly connected to the two ends of the outer sides of the V-shaped locking seats, and the other ends of the first r