CN113847301B - Oil cylinder capable of resisting lateral force - Google Patents

Oil cylinder capable of resisting lateral force Download PDF

Info

Publication number
CN113847301B
CN113847301B CN202111101434.7A CN202111101434A CN113847301B CN 113847301 B CN113847301 B CN 113847301B CN 202111101434 A CN202111101434 A CN 202111101434A CN 113847301 B CN113847301 B CN 113847301B
Authority
CN
China
Prior art keywords
piston assembly
outer sleeve
oil
piston
lateral force
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.)
Active
Application number
CN202111101434.7A
Other languages
Chinese (zh)
Other versions
CN113847301A (en
Inventor
洪建军
张小波
李秀珍
雷建红
郭绍波
熊俊
王辉
夏成强
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.)
General Designing Institute of Hubei Space Technology Academy
Original Assignee
General Designing Institute of Hubei Space Technology Academy
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 General Designing Institute of Hubei Space Technology Academy filed Critical General Designing Institute of Hubei Space Technology Academy
Priority to CN202111101434.7A priority Critical patent/CN113847301B/en
Publication of CN113847301A publication Critical patent/CN113847301A/en
Application granted granted Critical
Publication of CN113847301B publication Critical patent/CN113847301B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • F15B15/1428—Cylinders
    • 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
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • 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
    • F15B15/1466—Hollow piston sliding over a stationary rod inside the cylinder
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
    • F16J10/02—Cylinders designed to receive moving pistons or plungers
    • F16J10/04—Running faces; Liners
    • 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
    • F15B2015/267—Manual locking or release

Abstract

The application relates to an oil cylinder for resisting lateral force, and relates to the technical field of mechanical engineering, comprising an outer sleeve, a piston assembly and a locking mechanism, wherein the piston assembly is connected in the outer sleeve and is provided with a first oil cavity and a second oil cavity; the locking mechanism comprises an inner sleeve and a lock tongue, wherein the inner sleeve is sleeved outside the piston assembly, one end of the inner sleeve is arranged on the piston assembly in a sliding way, and a first oil cavity is formed between the inner sleeve and the piston assembly; one end of the lock tongue is connected with the other end of the inner sleeve, a second channel is formed between the lock tongue and the piston assembly, and the other end of the lock tongue is a bearing surface for bearing lateral force; the oil cylinder is in an extending state and a retracting state, when the oil cylinder is in the extending state, pressure oil is injected into the second oil cavity and is introduced into the second channel, and the lock tongue moves in a direction away from the piston assembly under the pushing of the pressure oil; when the locking bolt is in a retracted state, pressure oil is injected into the first oil cavity and introduced into the first channel, and the inner sleeve drives the locking bolt to move towards the direction approaching to the piston assembly under the pushing of the pressure oil.

Description

Oil cylinder capable of resisting lateral force
Technical Field
The application relates to the technical field of mechanical engineering, in particular to an oil cylinder capable of resisting lateral force.
Background
At present, the piston and the piston rod of the oil cylinder do high-speed reciprocating motion together and bear larger lateral force, so that friction between the piston and the piston rod and between the wall of the oil cylinder and a sealing structure is increased, the leakage quantity of a hydraulic system is increased, the piston and the piston rod generate radial deformation, and the service life of the oil cylinder is influenced.
In the related art, the oil cylinder with a common structure has certain lateral force resistance capacity by means of the measures of reinforcing the sealing of the piston and the guide sleeve, increasing the wall thickness of the cylinder barrel and the like, but can only resist smaller lateral force and has larger limitation.
Disclosure of Invention
The embodiment of the application provides an oil cylinder resistant to lateral force, which aims to solve the problems that in the related art, the oil cylinder of a common structure has certain lateral force resistance by means of measures such as reinforcing piston and guide sleeve sealing, increasing cylinder barrel wall thickness and the like, but only can resist smaller lateral force and has larger limitation.
In a first aspect, there is provided a lateral force resistant cylinder comprising:
an outer sleeve;
a piston assembly connected within the outer sleeve; a first oil cavity and a second oil cavity are formed in the piston assembly;
a locking mechanism, comprising:
-an inner sleeve which is sleeved outside the piston assembly, one end of which is slidably arranged on the piston assembly, and a first channel is formed between the inner sleeve and the piston assembly, and the first channel is communicated with the first oil cavity;
-a bolt, one end of which is connected to the other end of the inner sleeve and forms a second channel with the piston assembly communicating with the second oil chamber, the other end being a bearing surface for bearing lateral forces;
the oil cylinder is in an extending state and a retracting state, when the oil cylinder is in the extending state, pressure oil is injected into the second oil cavity and is introduced into the second channel, and the lock tongue moves in a direction away from the piston assembly under the pushing of the pressure oil; when the locking mechanism is in a retracted state, pressure oil is injected into the first oil cavity and introduced into the first channel, and the inner sleeve drives the lock tongue to move towards the direction close to the piston assembly under the pushing of the pressure oil.
In some embodiments, the oil cylinder further comprises a positioning mechanism, the positioning mechanism is arranged on the inner wall of the outer sleeve, and the locking mechanism is in butt joint with the outer sleeve through the positioning mechanism.
In some embodiments, the positioning mechanism comprises:
the positioning piece is arranged at one end of the outer sleeve, which is far away from the piston assembly, along the inner circumferential direction of the outer sleeve;
and the supporting piece is arranged in the middle of the outer sleeve along the inner circumferential direction of the outer sleeve, and the length of the supporting piece is not less than the maximum stroke of the locking mechanism.
In some embodiments:
the inner wall of the outer sleeve is provided with a plurality of grooves which are arranged at intervals along the axial direction of the outer sleeve;
the support piece comprises a plurality of support rings, each support ring corresponds to one groove, the support rings are arranged in the grooves, and the locking mechanism is propped against the support rings.
In some embodiments, the piston assembly comprises:
a piston rod, one end of which is connected with the outer sleeve;
a piston connected to the other end of the piston rod, and having a diameter larger than that of the piston rod; the inner sleeve is sleeved on the piston and arranged on the piston rod through the guide piece, and the inner sleeve, the guide piece, the piston rod and the piston jointly form the first channel.
In some embodiments:
the first oil cavity comprises a first section and a second section which are communicated with each other, the first section and the second section are respectively arranged along the axial direction and the radial direction of the piston assembly, and the second section is communicated with the first channel;
the second oil chamber is disposed along an axial direction of the piston assembly and penetrates the piston assembly.
In some embodiments:
the bolt is provided with a first thread and a second thread at intervals along the axial direction;
the locking mechanism further comprises a nut which is matched with the first thread and the second thread, and when the locking mechanism is in an extending state and a retracting state, the nut is respectively in threaded connection with the first thread or the second thread and is propped against the outer sleeve.
In some embodiments, the cylinder further comprises an anti-rotation mechanism disposed on the locking bolt and configured to prevent rotation of the locking bolt.
In some embodiments, the anti-rotation mechanism comprises:
the guide sleeve is arranged on the outer sleeve;
the guide rod is arranged along the axial direction of the outer sleeve and is arranged in the guide sleeve in a sliding manner;
and one end of the inserting rod is connected with the guide rod, and the other end of the inserting rod is vertically inserted into the lock tongue.
In some embodiments, the bearing surface is a beveled surface.
The beneficial effects that technical scheme that this application provided brought include: according to the embodiment of the application, the lock tongue and the inner sleeve are arranged, and the radial component force generated by the lateral force is supported by the lock tongue and the inner sleeve, so that the piston assembly and the outer sleeve are not subjected to the radial component force, radial deformation is not generated, the pressure oil in the oil cylinder is ensured not to leak inwards and outwards, and the lateral force resistance of the oil cylinder is improved.
The embodiment of the application provides an oil cylinder resisting lateral force, because after a lock tongue stretches out to a certain stroke, a bearing surface of the lock tongue contacts a load and pushes the load to move continuously until the specified stroke is reached, the oil cylinder is stopped. In the process, the lateral force applied by the load to the lock tongue is decomposed into an axial component force and a radial component force, wherein the axial component force is supported by the piston assembly and the outer sleeve, and the radial component force is supported by the lock tongue and the inner sleeve.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a retraction state of a lateral force resistant cylinder according to an embodiment of the present disclosure;
fig. 2 is a schematic view of an extension state of a lateral force resistant cylinder according to an embodiment of the present disclosure;
FIG. 3 is a left side view of FIG. 2;
fig. 4 is a schematic structural diagram of an anti-rotation mechanism according to an embodiment of the present application.
In the figure: 1. an outer sleeve; 10. a groove; 2. a piston assembly; 20. a first oil chamber; 200. a first section; 201. a second section; 21. a second oil chamber; 22. a piston rod; 23. a piston; 3. a locking mechanism; 30. an inner sleeve; 31. a first channel; 32. a bolt; 33. a second channel; 34. a bearing surface; 35. a guide member; 36. a first thread; 37. a second thread; 38. a nut; 4. a positioning mechanism; 40. a positioning piece; 41. a support; 410. a support ring; 5. an anti-rotation mechanism; 50. a guide sleeve; 51. a guide rod; 52. and a plunger.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
Referring to fig. 1 and 2, the embodiment of the application provides a lateral force resisting oil cylinder, which comprises an outer sleeve 1, a piston assembly 2 and a locking mechanism 3, wherein the piston assembly 2 is connected in the outer sleeve 1; a first oil cavity 20 and a second oil cavity 21 are formed in the piston assembly 2; the locking mechanism 3 comprises an inner sleeve 30 and a lock tongue 32, the inner sleeve 30 is sleeved outside the piston assembly 2, one end of the inner sleeve is slidably arranged on the piston assembly 2, a first channel 31 is formed between the inner sleeve and the piston assembly 2, and the first channel 31 is communicated with the first oil cavity 20; one end of the lock tongue 32 is connected with the other end of the inner sleeve 30, and a second channel 33 communicated with the second oil cavity 21 is formed between the lock tongue and the piston assembly 2, and the other end is a bearing surface 34 for bearing lateral force. The oil cylinder has an extending state and a retracting state, when the oil cylinder is in the extending state, pressure oil is injected into the second oil cavity 21 and is introduced into the second channel 33, and the lock tongue 32 moves away from the piston assembly 2 under the pushing of the pressure oil; when in the retracted state, the first oil cavity 20 is filled with pressure oil and is led into the first channel 31, and the inner sleeve 30 drives the lock tongue 32 to move towards the direction approaching the piston assembly 2 under the pushing of the pressure oil.
The retracting process of the oil cylinder resisting the lateral force is as follows:
the first oil cavity 20 is filled with pressure oil, the second oil cavity 21 is connected with return oil, the oil pressure in the first oil cavity 20 is increased, high-pressure hydraulic oil is introduced into the first channel 31, force for pushing the piston assembly 2 and force for pushing the inner sleeve 30 leftwards are generated, and the left end of the piston assembly 2 is fixedly connected with the left end of the outer sleeve 1, so that the piston assembly 2 cannot move rightwards, and the inner sleeve 30 drives the lock tongue 32 to move along the direction approaching the piston assembly 2 under the pushing of the pressure oil, and the moving process is retracting movement of the oil cylinder resisting lateral force.
The extending process of the oil cylinder resisting the lateral force is as follows:
the second oil cavity 21 is filled with pressure oil, the first oil cavity 20 is connected with return oil, the oil pressure in the second oil cavity 21 is increased, high-pressure hydraulic oil is introduced into the second channel 33, force for pushing the piston assembly 2 leftwards and force for pushing the lock tongue 32 rightwards are generated, the left end of the piston assembly 2 is fixedly connected with the left end of the outer sleeve 1, the piston assembly 2 cannot move leftwards, and therefore the lock tongue 32 drives the inner sleeve 30 to move along a direction away from the piston assembly 2 under the pushing of the pressure oil, and the moving process is the extending movement of the oil cylinder resisting the lateral force.
The process of bearing lateral force in the extending process of the oil cylinder resisting lateral force is as follows:
after the lock tongue 32 extends to a certain stroke, the bearing surface 34 of the lock tongue 32 contacts the load and pushes the load to move continuously until the specified stroke is reached, and the oil cylinder stops. In this process, the lateral force applied by the load to the lock tongue 32 (the lateral force in this embodiment refers to the tilting force applied by the load to the end face of the extending end of the cylinder, where the tilting force forms a certain angle with the axis of the cylinder), is decomposed into an axial component and a radial component, where the axial component is supported by the piston assembly 2 and the outer sleeve 1, and the radial component is supported by the lock tongue 32 and the inner sleeve 30, so that the radial deformation of the piston assembly 2 and the outer sleeve 1 is as small as possible, and it is ensured that the pressure oil in the cylinder cannot leak inward and outward.
Therefore, in the embodiment of the application, by arranging the lock tongue 32 and the inner sleeve 30 and supporting the radial component force generated by the lateral force by the lock tongue 32 and the inner sleeve 30, the piston assembly 2 and the outer sleeve 1 are not subjected to the radial component force and cannot generate radial deformation, so that the pressure oil in the oil cylinder is ensured not to leak inwards and outwards, and the lateral force resistance of the oil cylinder is improved.
Optionally, referring to fig. 2, the oil cylinder further includes a positioning mechanism 4, the positioning mechanism 4 is disposed on an inner wall of the outer sleeve 1, and the locking mechanism 3 is abutted with the outer sleeve 1 through the positioning mechanism 4.
The lateral force applied by the load to the lock tongue 32 is decomposed into an axial component force and a radial component force, wherein the axial component force is supported by the piston assembly 2 and the outer sleeve 1, and the radial component force is supported by the contact cooperation of the positioning mechanism 4 and the outer sleeve 1, so that the radial deformation of the lock tongue 32 and the inner sleeve 30 is as small as possible, the influence of the radial deformation on the piston assembly 2 and the outer sleeve 1 is small, and the oil cylinder is ensured not to leak inwards and outwards.
Preferably, referring to fig. 2, the positioning mechanism 4 includes a positioning member 40 and a supporting member 41, wherein the positioning member 40 is disposed at an end of the outer sleeve 1 away from the piston assembly 2 along the inner circumferential direction of the outer sleeve 1; the support 41 is provided in the middle of the outer sleeve 1 in the inner circumferential direction of the outer sleeve 1, and the length of the support 41 is not less than the maximum stroke of the lock mechanism 3.
The radial component force applied to the lock tongue 32 causes the lock tongue 32 and the inner sleeve 30 to deform along the radial direction, that is, the lock tongue 32 and the inner sleeve 30 together form a lever structure, and the bearing surface 34 of the lock tongue 32 is subjected to the radial component force, so that the right end of the lever structure is tilted upwards and the left end is pressed downwards; in this case, one fulcrum between the lever structure and the outer sleeve 1 is located at the rightmost end of the outer sleeve 1, and the other fulcrum is located in the middle of the outer sleeve 1 and is located at a different position according to the movement stroke of the oil cylinder. Therefore, in the embodiment of the application, the positioning piece 40 is arranged at the position of the first supporting point, the supporting piece 41 is arranged at the position of the second supporting point, and the length of the supporting piece 41 is not smaller than the maximum stroke of the locking mechanism 3 so as to meet different strokes of different oil cylinders.
Then, the radial component force applied to the lock tongue 32 is supported by the contact cooperation between the positioning piece 40 and the supporting piece 41 and the outer sleeve 1, so that the influence of the radial component force on the lock tongue 32 and the inner sleeve 30 is reduced, the radial deformation of the lock tongue 32 and the inner sleeve 30 is reduced as much as possible, and the service life of the oil cylinder is prolonged.
The positioning piece 40 is made of high-strength materials, the wear resistance is good, the use times are high, meanwhile, the positioning piece 40 is designed to be of a structure which can be separated from the outer sleeve 1, and after the positioning piece 40 is worn after being used for a long time, only the positioning piece 40 can be replaced without integral replacement.
The support 41 is made of composite materials, so that the wear resistance is good, and in order to prolong the service life of the oil cylinder, a lubricating nipple is designed near the support ring 410, and the support ring 410 can be filled with lubricating grease through the lubricating nipple for lubrication.
Further, a plurality of grooves 10 are formed on the inner wall of the outer sleeve 1 at intervals along the axial direction; the support 41 includes a plurality of support rings 410, each support ring 410 corresponds to one groove 10, the support rings 410 are disposed in the grooves 10, and the locking mechanism 3 abuts against the support rings 410.
Because the length of the support 41 is not less than the maximum travel of the locking mechanism 3, in order to realize the larger span of the support 41, the support 41 is not beneficial to processing and forming as a whole and is not beneficial to replacement, therefore, the support 41 is manufactured into a plurality of support rings 410 which are respectively arranged in a plurality of grooves 10, and the processing and the replacement of the support 41 are convenient.
Further, referring to fig. 1, the piston assembly 2 includes a piston rod 22 and a piston 23, and one end of the piston rod 22 is connected with the outer sleeve 1; the piston 23 is connected with the other end of the piston rod 22, and the diameter of the piston 23 is larger than that of the piston rod 22; the inner sleeve 30 is sleeved on the piston 23 and is arranged on the piston rod 22 through the guide member 35, and the inner sleeve 30, the guide member 35, the piston rod 22 and the piston 23 together form a first channel 31.
According to the embodiment of the application, through the structural design, the piston rod 22 and the piston 23 are fixed, the inner sleeve 30 and the lock tongue 32 move, meanwhile, the inner sleeve 30 and the lock tongue 32 bear radial component force, the guide piece 35 and the piston 23 affecting the sealing performance of the oil cylinder are far away from the bearing position, the radial deformation of the guide piece 35 and the piston 23 is ensured to be very small, the oil cylinder can normally operate under the condition of bearing larger lateral force, and internal leakage and external leakage do not occur.
Further, referring to fig. 1 and 3, the first oil chamber 20 includes a first section 200 and a second section 201 which are communicated with each other, the first section 200 and the second section 201 are respectively disposed along the axial direction and the radial direction of the piston assembly 2, and the second section 201 is communicated with the first passage 31, and the second section 201 is disposed on the piston rod 22 and is disposed close to the piston; the second oil chamber 21 is provided in the axial direction of the piston assembly 2 and penetrates the piston assembly 2.
The first oil cavity 20 is a rod cavity, the second oil cavity 21 is a rodless cavity, and for improving the safety of the oil cylinder, the first oil cavity 20 and the second oil cavity 21 are designed to the left end face of the fixed piston rod 22, and a safety valve block can be directly installed, so that the safety risk caused by hose breakage due to the fact that a hose is required to be directly connected in the movement of an oil port is avoided.
Further, the bolt 32 is provided with a first thread 36 and a second thread 37 at intervals along the axial direction thereof; the locking mechanism 3 further comprises a nut 38, the nut 38 is matched with the first thread 36 and the second thread 37, and when in an extending state and a retracting state, the nut 38 is respectively screwed on the first thread 36 or the second thread 37 and is abutted against the outer sleeve 1.
The first thread 36 in the embodiment of the present application is located at the left side of the second thread 37, and when the oil cylinder is in the extended state, the nut 38 is screwed on the first thread 36; when the cylinder is in the retracted state, the nut 38 is screwed onto the second screw 37.
When the oil cylinder is in an extending state, in order to avoid the problem that the oil cylinder is in a long-term bearing state, the stroke of the oil cylinder automatically retreats due to the leakage in the oil cylinder, and the safety risk is caused by the fact that the load cannot be attached reliably. After the oil cylinder extends to a specified stroke, the nut 38 is rotated to the first thread 36 and screwed until the nut 38 is tightly attached to the right end face of the outer sleeve 1, so that the lock tongue 32 is reliably positioned.
The unlocking process of the oil cylinder resisting the lateral force is as follows: the nut 38 is subjected to a large load due to the load acting on the bearing surface 34 of the tongue 32 for a long period of time, and may not be normally unscrewed. The second oil cavity 21 is filled with pressure oil, the first oil cavity 20 is connected with oil return, after the lock tongue 32 stretches out by 1-2mm, the nut 38 moves rightwards along with the lock tongue 32 and is separated from the right end face of the outer sleeve 1, and then the nut 38 is screwed out by using a special tool.
Optionally, referring to fig. 4, the cylinder further includes an anti-rotation mechanism 5, where the anti-rotation mechanism 5 is disposed on the lock tongue 32 and is used to prevent the lock tongue 32 from rotating.
When the lock tongue 32 contacts with a load, the bearing surface 34 of the lock tongue 32 is an inclined surface, so that the inclined surface cannot be well attached to the load after the lock tongue 32 rotates, and safety risk is generated. For this purpose, the anti-rotation mechanism 5 is designed to ensure that the tongue 32 does not rotate.
Preferably, referring to fig. 4, the anti-rotation mechanism 5 includes a guide sleeve 50, a guide rod 51 and an insert rod 52, wherein the guide sleeve 50 is arranged on the outer sleeve 1; the guide rod 51 is arranged along the axial direction of the outer sleeve 1 and is arranged in the guide sleeve 50 in a sliding manner; one end of the insertion rod 52 is connected to the guide rod 51, and the other end is inserted vertically into the lock tongue 32.
The guide rod 51 and the insert rod 52 move telescopically with the lock tongue 32, and the insert rod 52 is inserted into the lock tongue 32 in the radial direction to prevent rotation of the lock tongue 32.
Preferably, the bearing surface 34 is beveled.
The bearing surface 34 of the lock tongue 32 has a certain inclined angle, so that reliable fitting with a load is ensured;
in the embodiment of the application, in the process of extending and retracting the oil cylinder, air between the outer sleeve 1 and the guide piece 35 is repeatedly extruded and sucked to form certain compressed air or negative pressure, and the in-place precision of the oil cylinder is affected. For this purpose, a vent plug is provided, by means of which it is ensured that the air in the space can circulate normally.
In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
It should be noted that in this application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An oil cylinder resistant to lateral force, characterized in that it comprises:
an outer sleeve (1);
-a piston assembly (2) connected within the outer sleeve (1); a first oil cavity (20) and a second oil cavity (21) are formed in the piston assembly (2), and the left end of the piston assembly (2) is fixedly connected with the left end of the outer sleeve (1); locking mechanism (3), it includes:
-an inner sleeve (30) which is sleeved outside the piston assembly (2) and one end of which is slidingly arranged on the piston assembly (2) and forms a first passage (31) with the piston assembly (2), the first passage (31) being in communication with the first oil chamber (20);
-a bolt (32) connected at one end to the other end of the inner sleeve (30) and forming between the piston assembly (2) a second channel (33) communicating with the second oil chamber (21), the other end being a bearing surface (34) for bearing lateral forces;
the oil cylinder is in an extending state and a retracting state, when the oil cylinder is in the extending state, pressure oil is injected into the second oil cavity (21) and is introduced into the second channel (33), and the lock tongue (32) moves away from the piston assembly (2) under the pushing of the pressure oil; when the piston assembly is in a retracted state, pressure oil is injected into the first oil cavity (20) and is introduced into the first channel (31), and the inner sleeve (30) drives the lock tongue (32) to move towards a direction approaching to the piston assembly (2) under the pushing of the pressure oil.
2. The oil cylinder against lateral force according to claim 1, further comprising a positioning mechanism (4), wherein the positioning mechanism (4) is arranged on the inner wall of the outer sleeve (1), and the locking mechanism (3) is abutted with the outer sleeve (1) through the positioning mechanism (4).
3. The cylinder against lateral forces according to claim 2, characterized in that the positioning mechanism (4) comprises:
the positioning piece (40) is arranged at one end of the outer sleeve (1) far away from the piston assembly (2) along the inner circumferential direction of the outer sleeve (1);
and the supporting piece (41) is arranged in the middle of the outer sleeve (1) along the inner circumferential direction of the outer sleeve (1), and the length of the supporting piece (41) is not less than the maximum stroke of the locking mechanism (3).
4. A lateral force resistant ram as recited in claim 3, wherein:
the inner wall of the outer sleeve (1) is provided with a plurality of grooves (10) which are arranged at intervals along the axial direction of the outer sleeve;
the support piece (41) comprises a plurality of support rings (410), each support ring (410) corresponds to one groove (10), the support rings (410) are arranged in the grooves (10), and the locking mechanism (3) is propped against the support rings (410).
5. The cylinder against lateral forces according to claim 1, characterized in that the piston assembly (2) comprises:
a piston rod (22) one end of which is connected to the outer sleeve (1);
a piston (23) connected to the other end of the piston rod (22), and the diameter of the piston (23) is larger than the diameter of the piston rod (22); the inner sleeve (30) is sleeved on the piston (23) and arranged on the piston rod (22) through the guide piece (35), and the inner sleeve (30), the guide piece (35), the piston rod (22) and the piston (23) jointly form the first channel (31).
6. The lateral force resistant cylinder of claim 1, wherein:
the first oil cavity (20) comprises a first section (200) and a second section (201) which are communicated with each other, the first section (200) and the second section (201) are respectively arranged along the axial direction and the radial direction of the piston assembly (2), and the second section (201) is communicated with the first channel (31);
the second oil chamber (21) is disposed along the axial direction of the piston assembly (2) and penetrates the piston assembly (2).
7. The lateral force resistant cylinder of claim 1, wherein:
the bolt (32) is provided with first threads (36) and second threads (37) at intervals along the axial direction;
the locking mechanism (3) further comprises a nut (38), the nut (38) is matched with the first thread (36) and the second thread (37), and when the locking mechanism is in an extending state and a retracting state, the nut (38) is respectively screwed on the first thread (36) or the second thread (37) and is propped against the outer sleeve (1).
8. The lateral force resistant cylinder of claim 1, further comprising an anti-rotation mechanism (5), said anti-rotation mechanism (5) being disposed on said tongue (32) and configured to prevent rotation of said tongue (32).
9. The cylinder against lateral forces according to claim 8, characterized in that the anti-rotation mechanism (5) comprises:
a guide sleeve (50) arranged on the outer sleeve (1);
a guide rod (51) which is arranged along the axial direction of the outer sleeve (1) and is arranged in the guide sleeve (50) in a sliding manner;
and one end of the inserting rod (52) is connected with the guide rod (51), and the other end of the inserting rod is vertically inserted into the lock tongue (32).
10. A lateral force resistant ram as claimed in claim 1, characterised in that the bearing surface (34) is a bevel.
CN202111101434.7A 2021-09-18 2021-09-18 Oil cylinder capable of resisting lateral force Active CN113847301B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111101434.7A CN113847301B (en) 2021-09-18 2021-09-18 Oil cylinder capable of resisting lateral force

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111101434.7A CN113847301B (en) 2021-09-18 2021-09-18 Oil cylinder capable of resisting lateral force

Publications (2)

Publication Number Publication Date
CN113847301A CN113847301A (en) 2021-12-28
CN113847301B true CN113847301B (en) 2024-02-02

Family

ID=78974661

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111101434.7A Active CN113847301B (en) 2021-09-18 2021-09-18 Oil cylinder capable of resisting lateral force

Country Status (1)

Country Link
CN (1) CN113847301B (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989002987A1 (en) * 1987-09-26 1989-04-06 Alfred Teves Gmbh & Co Ohg Lockable hydraulic cylinder
US5172625A (en) * 1991-11-04 1992-12-22 Latham Robert P Hydraulic cylinder with lateral support
CN102857021A (en) * 2012-08-22 2013-01-02 北京摩诘创新科技有限公司 Servo electric cylinder
CN203978999U (en) * 2014-08-13 2014-12-03 合肥长源液压股份有限公司 Can bear larger side to the hydraulic jack of pressure
CN105065363A (en) * 2015-08-04 2015-11-18 山东同力液压装备有限公司 High-precision lateral-force-resistant self-locking wind power hydraulic cylinder
CN107355445A (en) * 2017-06-20 2017-11-17 北京机械设备研究所 A kind of hydraulic car leg oil cylinder
CN207740267U (en) * 2017-12-19 2018-08-17 华侨大学 A kind of telescoping mechanism that can bear radial load
CN213684763U (en) * 2020-09-22 2021-07-13 济南华辰实业有限责任公司 Mechanical locking anti-rotation hydraulic cylinder

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989002987A1 (en) * 1987-09-26 1989-04-06 Alfred Teves Gmbh & Co Ohg Lockable hydraulic cylinder
US5172625A (en) * 1991-11-04 1992-12-22 Latham Robert P Hydraulic cylinder with lateral support
CN102857021A (en) * 2012-08-22 2013-01-02 北京摩诘创新科技有限公司 Servo electric cylinder
CN203978999U (en) * 2014-08-13 2014-12-03 合肥长源液压股份有限公司 Can bear larger side to the hydraulic jack of pressure
CN105065363A (en) * 2015-08-04 2015-11-18 山东同力液压装备有限公司 High-precision lateral-force-resistant self-locking wind power hydraulic cylinder
CN107355445A (en) * 2017-06-20 2017-11-17 北京机械设备研究所 A kind of hydraulic car leg oil cylinder
CN207740267U (en) * 2017-12-19 2018-08-17 华侨大学 A kind of telescoping mechanism that can bear radial load
CN213684763U (en) * 2020-09-22 2021-07-13 济南华辰实业有限责任公司 Mechanical locking anti-rotation hydraulic cylinder

Also Published As

Publication number Publication date
CN113847301A (en) 2021-12-28

Similar Documents

Publication Publication Date Title
AU2011282321B9 (en) Hydraulic oil cylinder, correlative device thereof, hydraulic cushion system, excavator and concrete pump truck
AU2011282322B2 (en) Hydraulic oil cylinder, hydraulic cushion system, excavator and concrete pump truck
EP2857711B1 (en) Overtravel pressure relief for a gas spring
CN214247860U (en) Hydraulic cylinder with self-locking function
CN113847301B (en) Oil cylinder capable of resisting lateral force
CN112443532A (en) Hydraulic cylinder
CN101303051A (en) Locking device for shaft
CN104358731A (en) Hydraulic cylinder for locking hydraulic clamp
CN213684763U (en) Mechanical locking anti-rotation hydraulic cylinder
KR101061422B1 (en) Power conversion apparauts of manual hadraulic equipment
CN107630861B (en) Flexibly adjustable safety self-locking oil cylinder
US4002107A (en) Disposable fluid actuator
CN112096686B (en) Hydraulic cylinder
CN105971967B (en) Cylinder with floating piston, low profile swivel cap and lubricated rod
RU2406885C2 (en) Plunger hydraulic cylinder
CN112922921A (en) Hydraulic cylinder capable of being locked at any position
CN108032997B (en) Lock mechanism
CN112664508A (en) Swing linear oil cylinder
CN216430137U (en) Mechanical locking lifting cylinder suitable for locking at any position
CN112664507A (en) Hydraulic cylinder for hoisting equipment
CN219911099U (en) Tube pump
CN113790041B (en) Multifunctional pumping aid with righting function
CN212356376U (en) Hydraulic jack
CN212429399U (en) Ultra-high pressure ultra-thin oil cylinder
CN217633228U (en) Hydraulic cylinder with mechanical locking function

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant