CN114893470A - Novel mechanical self-locking oil cylinder - Google Patents

Novel mechanical self-locking oil cylinder Download PDF

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Publication number
CN114893470A
CN114893470A CN202210695276.0A CN202210695276A CN114893470A CN 114893470 A CN114893470 A CN 114893470A CN 202210695276 A CN202210695276 A CN 202210695276A CN 114893470 A CN114893470 A CN 114893470A
Authority
CN
China
Prior art keywords
cavity
brake
rotating shaft
oil cylinder
piston rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202210695276.0A
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Chinese (zh)
Inventor
张剑
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Kapu Heavy Industry Technology Co ltd
Original Assignee
Shanghai Kapu Heavy Industry Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Kapu Heavy Industry Technology Co ltd filed Critical Shanghai Kapu Heavy Industry Technology Co ltd
Priority to CN202210695276.0A priority Critical patent/CN114893470A/en
Publication of CN114893470A publication Critical patent/CN114893470A/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1457—Piston rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1457—Piston rods
    • F15B15/1461—Piston rod sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1471—Guiding means other than in the end cap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/26—Locking mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/26—Locking mechanisms
    • F15B15/262—Locking mechanisms using friction, e.g. brake pads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/26—Locking mechanisms
    • F15B2015/268—Fluid supply for locking or release independent of actuator pressurisation

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention discloses a novel mechanical self-locking oil cylinder, which comprises an oil cylinder barrel and a piston rod assembly, wherein the piston rod assembly is arranged on the oil cylinder barrel; a braking cavity and a piston motion cavity are arranged in the cylinder barrel of the oil cylinder; a rotating shaft is arranged in the cylinder barrel of the oil cylinder, and the outer wall of the rotating shaft is provided with threads; a rotating shaft advancing cavity is formed in the piston rod assembly, one end of the rotating shaft extends into the rotating shaft advancing cavity of the piston rod assembly, and a rotating power pin is arranged in the piston rod assembly and meshed with threads on the outer wall of the rotating shaft; the other end of the rotating shaft extends into a braking cavity of the cylinder barrel of the oil cylinder, a brake assembly is arranged in the braking cavity, and the brake assembly brakes one end of the rotating shaft extending into the braking cavity. According to the novel mechanical self-locking oil cylinder, the brake is reset by stopping injecting oil into the brake cavity, so that the rotating shaft is braked, and the piston rod assembly is locked.

Description

Novel mechanical self-locking oil cylinder
Technical Field
The invention belongs to the technical field of oil cylinders, and particularly relates to a novel mechanical self-locking oil cylinder.
Background
The existing oil cylinder equipment mostly needs a locking and positioning function, the equipment is often positioned by means of a hydraulic lock, but the risk of leakage exists in hydraulic pressure, and the locking is possibly caused to fail.
Disclosure of Invention
The invention aims to provide a novel mechanical self-locking oil cylinder, which realizes locking and positioning of the oil cylinder by directly locking a piston rod assembly, and avoids the occurrence of locking failure caused by oil leakage when a hydraulic lock is adopted for locking.
In order to achieve the purpose, the technical scheme of the invention is to design a novel mechanical self-locking oil cylinder, which comprises an oil cylinder barrel and a piston rod assembly; a brake cavity and a piston motion cavity are arranged in the cylinder barrel of the oil cylinder, the piston rod assembly moves in the piston motion cavity, and the piston motion cavity is divided into a rodless cavity and a rod cavity by the movable rod assembly;
a rotating shaft is arranged in the cylinder barrel of the oil cylinder, and threads are arranged on the outer wall of the rotating shaft; a rotating shaft advancing cavity is formed in the piston rod assembly, one end of the rotating shaft extends into the rotating shaft advancing cavity of the piston rod assembly, and a rotating power pin is arranged in the piston rod assembly and meshed with threads on the outer wall of the rotating shaft; the other end of the rotating shaft extends into a brake cavity of the cylinder barrel of the oil cylinder, a brake assembly is arranged in the brake cavity, and the brake assembly brakes one end of the rotating shaft extending into the brake cavity;
and a rodless cavity inlet and a rod cavity inlet are respectively arranged on the cavity walls of the rodless cavity and the rod cavity of the oil cylinder barrel.
Furthermore, one end of the cylinder barrel of the oil cylinder is provided with a guide cylinder cover; the piston rod assembly extends from the guide cylinder head.
Furthermore, a second bearing and a first bearing are respectively arranged in a rotating shaft advancing cavity of the piston rod assembly and on partition walls of a braking cavity and a piston motion cavity of the cylinder barrel of the oil cylinder; and two ends of the rotating shaft respectively penetrate through the second bearing and the first bearing.
Furthermore, the brake component is a hydraulic brake, and a brake hydraulic oil inlet is formed in the cavity wall of a brake cavity of the oil cylinder barrel; the initial state of the brake assembly is a braking state.
Further, the brake assembly is a caliper disc brake or a brake pad brake.
Furthermore, a sealing assembly is arranged on the contact surface of the guide cylinder cover and the piston rod assembly.
The invention has the advantages and beneficial effects that: according to the novel mechanical self-locking oil cylinder, hydraulic oil enters the braking cavity to loosen the rotating shaft by the brake assembly, after the rotating shaft is loosened, the hydraulic oil enters the rodless cavity or the rod cavity to enable the piston rod assembly to move, when the piston rod assembly needs to be locked, oil is only required to be injected into the braking cavity to enable the brake to reset, so that the rotating shaft is braked, and the locking of the piston rod assembly is completed.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The brake device comprises an oil cylinder barrel 1, a brake component 2, a first bearing 3, a rotating shaft 4, a rotating power pin 5, a second bearing 6, a guide cylinder cover 7, a sealing component 8, a piston rod component 9, a brake hydraulic oil inlet X, a rodless cavity inlet P1 and a rod cavity inlet P2.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example (b):
the novel mechanical self-locking oil cylinder comprises an oil cylinder barrel 1, a brake component 2, a first bearing 3, a rotating shaft 4, a rotating power pin 5, a second bearing 6, a guide cylinder cover 7, a sealing component 8, a piston rod component 9, a brake hydraulic oil inlet X, a rodless cavity inlet P1 and a rod cavity inlet P2;
a brake cavity and a piston motion cavity are arranged in the oil cylinder barrel 1, the piston rod assembly 9 moves in the piston motion cavity, and the piston motion cavity is divided into a rodless cavity and a rod cavity by the piston rod assembly 9;
one end of the oil cylinder barrel 1 is provided with a guide cylinder cover 7, and a piston rod assembly 9 extends out of the guide cylinder cover 7; a rotating shaft advancing cavity is arranged in the piston rod assembly 9, and a second bearing 6 and a first bearing 3 are respectively arranged in the rotating shaft advancing cavity of the piston rod assembly 9 and on partition walls of a braking cavity and a piston motion cavity of the oil cylinder barrel 1; two ends of the rotating shaft 9 respectively penetrate through the second bearing 6 and the first bearing 3; the outer wall of the rotating shaft 9 is provided with threads, a rotating power pin 5 is arranged in the piston rod assembly 9, and the rotating power pin 5 is meshed with the threads on the outer wall of the rotating shaft 9;
the brake component 2 is positioned in a brake cavity of the oil cylinder barrel 1, and a brake end of the brake component 2 is used for braking one end of the rotating shaft 4;
a rodless cavity inlet P1 and a rod cavity inlet P2 are respectively arranged on the cavity walls of the rodless cavity and the rod cavity of the oil cylinder barrel 1; a brake hydraulic oil inlet X is arranged on the cavity wall of a brake cavity of the oil cylinder barrel 1;
the brake component 2 is a hydraulic brake, and the brake component 2 can be a caliper disc brake or a brake pad brake. (ii) a
The brake component 2 is in a braking state in an initial state;
the using method comprises the following steps: the external hydraulic device is sequentially connected with a brake hydraulic oil inlet X, a rodless cavity inlet P1 and a rod cavity inlet P2 through three oil pipes respectively, each oil pipe is provided with an independent valve, and hydraulic oil enters different inlets by controlling different valves.
When hydraulic oil enters the brake hydraulic oil inlet X, (in an initial state, the brake assembly 2 keeps braking) the brake assembly 2 releases braking;
(an example of the brake is that a brake plate with a spring is arranged in a brake cavity, the brake plate tightly presses a rotating shaft 4 in an initial state, the spring is compressed after hydraulic oil enters the brake cavity, and the brake plate leaves the rotating shaft; when oil injection into the brake cavity is stopped, the brake plate is reset under the action of the spring, the hydraulic oil returns from a brake hydraulic oil inlet X, and the brake plate presses the rotating shaft 4);
then if hydraulic oil enters from a rodless cavity inlet P1, the piston rod assembly 9 extends out along with the continuous entering of the hydraulic oil into the rodless cavity, and in the process, along with the movement of the piston rod assembly 9, the rotating shaft 4 axially rotates in situ under the transmission of the rotating power pin 5;
when the brake assembly 2 releases the brake, if hydraulic oil enters from the rod cavity inlet P2, the piston rod assembly 9 retracts along with the continuous entering of the hydraulic oil into the rod cavity, and the rotating shaft 4 axially rotates in situ under the transmission of the rotating power pin 5 along with the movement of the piston rod assembly 9 in the process;
when the piston rod assembly 9 in the extending or retracting state needs to be fixed, on one hand, oil injection into the rodless cavity inlet P1 or the rod cavity inlet P2 needs to be stopped, on the other hand, oil injection into the brake hydraulic oil inlet X is stopped, the brake assembly 2 is reset, namely, the brake assembly 2 enters the braking state again, hydraulic oil in the brake cavity is discharged from the brake cavity in the process, at the moment, the rotating shaft 4 is braked, so that the piston rod assembly 9 meshed with the rotating shaft 4 through the rotating power pin 5 is braked by the rotating shaft 4, namely, the piston rod assembly 9 is fixed.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. The utility model provides a novel machinery auto-lock hydro-cylinder which characterized in that: comprises an oil cylinder barrel and a piston rod assembly; a brake cavity and a piston motion cavity are arranged in the cylinder barrel of the oil cylinder, the piston rod assembly moves in the piston motion cavity, and the piston motion cavity is divided into a rodless cavity and a rod cavity by the movable rod assembly;
a rotating shaft is arranged in the cylinder barrel of the oil cylinder, and threads are arranged on the outer wall of the rotating shaft; a rotating shaft advancing cavity is formed in the piston rod assembly, one end of the rotating shaft extends into the rotating shaft advancing cavity of the piston rod assembly, and a rotating power pin is arranged in the piston rod assembly and meshed with threads on the outer wall of the rotating shaft; the other end of the rotating shaft extends into a brake cavity of the cylinder barrel of the oil cylinder, a brake assembly is arranged in the brake cavity, and the brake assembly brakes one end of the rotating shaft extending into the brake cavity;
and a rodless cavity inlet and a rod cavity inlet are respectively arranged on the cavity walls of the rodless cavity and the rod cavity of the oil cylinder barrel.
2. The novel mechanical self-locking oil cylinder according to claim 1, characterized in that: one end of the cylinder barrel of the oil cylinder is provided with a guide cylinder cover; the piston rod assembly extends from the guide cylinder head.
3. The novel mechanical self-locking oil cylinder according to claim 1, characterized in that: a second bearing and a first bearing are respectively arranged in a rotating shaft advancing cavity of the piston rod assembly and on partition walls of a braking cavity and a piston motion cavity of the cylinder barrel of the oil cylinder; and two ends of the rotating shaft respectively penetrate through the second bearing and the first bearing.
4. The novel mechanical self-locking oil cylinder according to claim 1, characterized in that: the brake assembly is a hydraulic brake, and a brake hydraulic oil inlet is formed in the cavity wall of a brake cavity of the cylinder barrel of the oil cylinder; the initial state of the brake assembly is a braking state.
5. The novel mechanical self-locking oil cylinder according to claim 1, characterized in that: the brake component is a caliper disc brake or a brake pad brake.
6. The novel mechanical self-locking oil cylinder according to claim 1, characterized in that: and a sealing assembly is arranged on the contact surface of the guide cylinder cover and the piston rod assembly.
CN202210695276.0A 2022-06-20 2022-06-20 Novel mechanical self-locking oil cylinder Withdrawn CN114893470A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210695276.0A CN114893470A (en) 2022-06-20 2022-06-20 Novel mechanical self-locking oil cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210695276.0A CN114893470A (en) 2022-06-20 2022-06-20 Novel mechanical self-locking oil cylinder

Publications (1)

Publication Number Publication Date
CN114893470A true CN114893470A (en) 2022-08-12

Family

ID=82728416

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210695276.0A Withdrawn CN114893470A (en) 2022-06-20 2022-06-20 Novel mechanical self-locking oil cylinder

Country Status (1)

Country Link
CN (1) CN114893470A (en)

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Application publication date: 20220812