CN117249189A - Buffer without base - Google Patents

Buffer without base Download PDF

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Publication number
CN117249189A
CN117249189A CN202311367483.4A CN202311367483A CN117249189A CN 117249189 A CN117249189 A CN 117249189A CN 202311367483 A CN202311367483 A CN 202311367483A CN 117249189 A CN117249189 A CN 117249189A
Authority
CN
China
Prior art keywords
oil
cylinder assembly
inner cylinder
outer cylinder
assembly
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.)
Pending
Application number
CN202311367483.4A
Other languages
Chinese (zh)
Inventor
朱景恒
朱联江
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.)
Foshan Chuanglian Technology Co ltd
Original Assignee
Foshan Chuanglian 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 Foshan Chuanglian Technology Co ltd filed Critical Foshan Chuanglian Technology Co ltd
Priority to CN202311367483.4A priority Critical patent/CN117249189A/en
Publication of CN117249189A publication Critical patent/CN117249189A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/3207—Constructional features
    • F16F9/3235—Constructional features of cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/28—Buffer-stops for cars, cages, or skips
    • B66B5/282—Structure thereof
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/48—Arrangements for providing different damping effects at different parts of the stroke
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)

Abstract

The utility model provides a buffer without a base, which relates to the technical field of buffers and comprises an outer cylinder assembly and an inner cylinder assembly, wherein the inner cylinder assembly is slidably inserted into the outer cylinder assembly; the cavity of the outer cylinder assembly is filled with hydraulic oil; an oil passing column casing is arranged in the outer cylinder assembly, a plurality of oil holes are longitudinally formed in the side of the oil passing column casing, and a top oil passing hole is formed in the upper end of the oil passing column casing; the inner cylinder assembly is provided with an inner cylinder bottom hole, and the oil column cylinder is movably inserted into the inner cylinder bottom hole. The utility model has the advantages that the movable spliced outer cylinder assembly and the movable spliced inner cylinder assembly are arranged, when the buffer is compressed, the oil holes exposed in the outer cylinder assembly are gradually reduced, and the oil holes exposed in the inner cylinder assembly are gradually increased, so that the flow rate of hydraulic oil is reduced, the hydraulic pressure is increased, the buffer force is gradually increased, and the impact force is gradually increased just when the buffer force is matched with the impact, so that the buffer force and the impact force can be better resisted.

Description

Buffer without base
Technical Field
The utility model relates to the technical field of buffers, in particular to a buffer without a base.
Background
In mechanical equipment such as lifting transportation, elevators, metallurgy, port machinery, railway vehicles and the like, a buffer is often the last link of a safety system, and plays a role in buffering when the equipment breaks down or the equipment is in a squat state, so that people in the equipment are prevented from being directly impacted or from being damaged by hard collision. During a collision or impact, the force between objects increases suddenly and then disappears quickly, also known as impact or collision force. The impact force is characterized in that the action time is extremely short, but the magnitude can reach very big, when two objects of courseware collide each other, the force between the objects has a process of becoming bigger gradually, but the buffer on the market, especially the oil pressure buffer, because the buffer utilizes all to be used is that hydraulic oil flows between two cavities to realize the buffering, in the course of designing, the change of the force received in the buffering process can be considered very little, but in the time of striking, there is the process of impact force change, if the buffer that can not change the buffering pressure is used, the impact force sense that the human body receives can be stronger when the impact force becomes bigger, and the injury can not be reduced to the minimum for the human body in the equipment or the object that receives the impact.
The technical contents disclosed in the Chinese patent document (application number: CN201920094427.0, patent name: an elevator buffer) are as follows: the oil level check device comprises an oil cylinder, a plunger movably matched with the oil cylinder and a reset mechanism for resetting the plunger, wherein the plunger is guided by the oil cylinder, an inner cavity of the plunger is communicated with an inner cavity of the oil cylinder, a top cover is arranged at the top of the plunger, an oil filling nozzle is arranged on the top cover, and an oil level check mechanism is arranged on the oil cylinder. The elevator buffer can replace the traditional elevator buffer with the oil nozzle, the manufacturing process is simplified, the manufacturing cost of the elevator buffer is reduced, and the oil injection is more convenient.
As is apparent from the above embodiments, the buffer of the elevator is buffered by the oil cylinder, but in the expression of the utility model, no mechanism for realizing pressure change is found, so that the buffer reversing force provided by the buffer is the same in the buffering process of the buffer, so that when the impact force of the elevator is the maximum, a person in the elevator can feel the maximum impact sense, and therefore, when the elevator impacts the buffer, the protection force of the person in the elevator box cannot reach the optimal state, and the person in the elevator box is easy to be injured due to the impact.
Disclosure of Invention
The present utility model provides a buffer without a base, which can overcome the defects in the prior art mentioned in the background art.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
a base-free damper having an outer cylinder assembly and an inner cylinder assembly slidably received within the outer cylinder assembly; the cavity of the outer cylinder assembly is filled with hydraulic oil;
an oil passing column casing is arranged in the outer cylinder assembly, a plurality of oil holes are longitudinally formed in the side of the oil passing column casing, and a top oil passing hole is formed in the upper end of the oil passing column casing;
the inner cylinder assembly is provided with an inner cylinder bottom hole which is sleeved on the oil passing column casing in an up-down movable mode.
Further, in the compressed state, the inner cylinder assembly can be completely pressed into the outer cylinder assembly, the upper end of the inner cylinder assembly is connected with the face cover assembly, the face cover assembly comprises a face cover body, and the face cover body is provided with an oil conveying hole which is communicated with the oil storage component.
Further, the oil passing column casing comprises a column casing body, the oil hole is arranged on the cylindrical surface of the column casing body, the upper part of the column casing body is connected with a column casing upper cover, and the top oil passing hole is arranged on the column casing upper cover; the upper cover of the cylinder is in a circular plate shape, and the diameter size of the upper cover of the cylinder is larger than that of the bottom hole of the inner cylinder.
Furthermore, a positioning key groove is formed in the outer side of the cylinder body, a positioning key pin is arranged on the positioning key groove, a bottom hole positioning key groove is formed in the inner side of the bottom hole of the inner cylinder, and the bottom hole positioning key groove is movably inserted with the positioning key pin.
Still further, the oil storage part includes first defeated oil pipe, and first defeated oil pipe is connected to the oil storage lid, and the second defeated oil pipe is connected to oil storage lid lower extreme, and oil storage lid lower extreme threaded connection has the surplus oil tank, and the inner bottom of surplus oil tank is pressed close to the lower extreme export of second defeated oil pipe.
Still further, the outer cylinder assembly includes outer cylinder body, and the inner upside of outer cylinder body is provided with first sealing washer, and the inner cylinder assembly includes the inner cylinder body, and the lower extreme outside of inner cylinder body is provided with the second sealing washer.
Further, a spring is arranged on the outer side of the outer cylinder assembly, the upper end of the spring is fixedly connected with the face cover assembly, and the lower end of the spring is fixedly connected with the lower end of the outer cylinder assembly.
Furthermore, a limit switch is arranged on the outer side of the outer cylinder component, the limit switch comprises a switch controller and a switch contact rod which are movably inserted, the upper end of the switch contact rod is connected with the surface cover component, and the switch controller is connected with the outer cylinder component.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The movable spliced outer cylinder assembly and the movable spliced inner cylinder assembly are arranged, and the inner cylinder assembly can be completely pressed into the outer cylinder assembly, so that compared with a traditional buffer with the same height, the buffer has a larger buffer stroke value; compared with the traditional buffer with the same buffer stroke value, the buffer has lower height, can reduce the depth of pit digging when applied to an elevator shaft, and is convenient for construction.
(2) The bottom of the inner cylinder assembly is provided with an inner cylinder bottom hole, the inner cylinder bottom hole is sleeved on the oil passing column casing in a sliding way up and down, the upper end of the oil passing column casing is provided with a top oil passing hole, a plurality of oil holes are longitudinally arranged on the side of the oil passing column casing, when the buffer is not compressed, hydraulic oil is stored in a cavity of the outer cylinder assembly, when the buffer is compressed, the inner cylinder assembly is gradually pressed into the outer cylinder assembly (oil inlet and oil outlet can occur in the oil holes on the oil passing column casing at the moment, the oil inlet or the oil outlet is by taking the bottom surface of the inner cylinder assembly as a boundary line, the oil inlet is arranged at the oil holes below the bottom surface of the inner cylinder assembly, the oil outlet is arranged at the oil holes above the bottom surface of the inner cylinder assembly, and hydraulic oil in the outer cylinder assembly enters the oil passing column casing from the oil holes above the bottom surface of the inner cylinder assembly and the top oil passing hole to the inner cylinder assembly at the moment; and along with the inner cylinder assembly is pressed into the outer cylinder assembly, the oil through column casing is also gradually inserted into the inner cylinder assembly, the oil hole in the outer cylinder assembly is gradually reduced, the oil hole exposed to the inner cylinder assembly is gradually increased, the oil inlet hole is reduced, the oil outlet hole is increased, the flow rate of hydraulic oil entering the inner cylinder assembly from the outer cylinder assembly is reduced because the oil inlet hole is reduced, the hydraulic pressure is increased, the impact force is gradually increased when the impact force is gradually increased just fits the impact, and therefore the buffer force can be better resisted with the impact force.
(3) The inner cylinder assembly is arranged in the outer cylinder assembly in a vertical sliding manner, the outer cylinder assembly is provided with an oil passing column casing, the inner cylinder assembly is provided with an inner cylinder bottom hole, and when the inner cylinder assembly moves up and down relative to the outer cylinder assembly, the inner cylinder bottom hole also slides up and down along the oil passing column casing, so that the matched arrangement of the inner cylinder bottom hole and the oil passing column casing also achieves a certain guiding effect, and the moving stability is enhanced; the traditional buffer adopts a conical column with a small upper end and a large lower end to replace the oil passing column barrel of the utility model, and oil drainage and buffering are carried out through a gap between the conical column and an inner cylinder bottom hole of an inner cylinder assembly, but the structure has the defect that when the inner cylinder assembly is positioned at the highest position, the gap between the inner cylinder bottom hole and the upper end of the conical column is larger, so that the inner cylinder assembly can slightly shake and has poor stability. In this technical scheme, can the design in jar bottom hole just can satisfy along the extension lead to oily column casing reciprocate can, in the aperture size in jar bottom hole just with lead to the size matching of oily column casing promptly, the compactness can be higher, avoids jar subassembly to take place to rock in, and stability obtains further improvement.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, in which:
FIG. 1 is a schematic diagram of a buffer;
FIG. 2 is a cross-sectional view of a bumper;
FIG. 3 is a first exploded view of the buffer;
FIG. 4 is a second exploded view of the buffer;
FIG. 5 is an overall view of the face cap assembly;
FIG. 6 is a general diagram of a buffer compression state;
FIG. 7 is a cross-sectional view of a compressed state of the damper;
fig. 8 is a schematic view of a through-oil column.
In the figure: 1. an outer cylinder assembly; 101. an outer cylinder body; 102. a first seal ring; 2. an oil-passing column casing; 201. a column casing body; 2011. an oil hole; 2012. positioning a key groove; 202. a column casing upper cover; 2021. a top oil through hole; 203. positioning a key pin; 3. a spring; 4. an inner cylinder assembly; 401. an inner cylinder body; 4011. an inner cylinder bottom hole; 4012. positioning key grooves of bottom holes; 402. a second seal ring; 5. a face cap assembly; 501. a face cover body; 5011. an oil delivery hole; 502. an oil storage member; 5021. a first oil delivery pipe; 5022. an oil storage cap; 5023. the second oil delivery pipe; 5024. a residual oil tank; 6. a limit switch; 601. a switch controller; 602. and a switch contact rod.
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model.
As shown in fig. 1 to 8, a buffer without a base can be placed at the bottom of an elevator shaft for falling buffer of an elevator car, and is provided with an outer cylinder assembly 1 and an inner cylinder assembly 4, wherein the outer cylinder assembly 1 is in sliding connection with the inner cylinder assembly 4, the inner cylinder assembly 4 is in sliding connection with the outer cylinder assembly 1, a cavity of the outer cylinder assembly 1 is filled with hydraulic oil, and when the buffer is in compression buffer, the inner cylinder assembly 4 can be fully pressed into the outer cylinder assembly 1, namely, when in a full compression state, a surface cover body 501 is attached to an outer cylinder body 101; therefore, the technical scheme has the advantage that compared with the traditional buffer with the same height, the buffer stroke value of the buffer is larger; compared with the buffer with the same buffer stroke value, the buffer has lower height, can reduce the pit digging depth when applied to an elevator shaft, is convenient for construction, can realize gradual enlargement of buffer force in the compression process, and has the same force change with the impact force change, so the buffer can well resist the impact force and reduce the damage caused by the impact to the maximum extent.
The inside oil column section of thick bamboo 2 that leads to that is provided with of outer jar subassembly 1, the side of oil column section of thick bamboo 2 vertically is provided with a plurality of oilhole 2011, the upper end of oil column section of thick bamboo 2 is provided with top oil hole 2021, the inner jar subassembly 4 is provided with interior cylinder bottom hole 4011, interior cylinder bottom hole 4011 cup joints on oil column section of thick bamboo 2 from top to bottom movably, oil column section of thick bamboo 2 includes column section of thick bamboo body 201, oilhole 2011 sets up on the face of cylinder of column section of thick bamboo body 201, column section of thick bamboo upper cover 202 is connected to column section of thick bamboo body 201 top, top oil hole 2021 sets up on column section of thick bamboo upper cover 202. Wherein the upper cylinder cover 202 is disc-shaped, the diameter of the upper cylinder cover 202 is larger than the diameter of the bottom hole 4011, and the purpose of the design is to prevent the inner cylinder assembly 4 from being separated from the outer cylinder assembly 1. When the buffer is not compressed, hydraulic oil is stored in the cavity of the outer cylinder assembly 1, when the buffer is compressed, the inner cylinder assembly 4 is gradually pressed into the outer cylinder assembly 1 (when the inner cylinder assembly 4 moves downwards, oil inlet and oil outlet can occur to the oil hole 2011 on the oil passing cylinder 2, the oil inlet or the oil outlet is formed by taking the bottom surface of the inner cylinder assembly 4 as a boundary, the oil inlet is formed by the oil inlet 2011 below the bottom surface of the inner cylinder assembly 4, and the oil outlet is formed by the oil inlet 2011 above the bottom surface of the inner cylinder assembly 4), and at the moment, hydraulic oil in the outer cylinder assembly 1 enters the oil passing cylinder 2 from the oil inlet 2011 below the bottom surface of the inner cylinder assembly 4 in the oil passing cylinder 2 and then is discharged into the inner cylinder assembly 4 from the oil inlet 2011 above the bottom surface of the inner cylinder assembly 4 and the top oil passing hole 2021; as the inner cylinder assembly 4 is pressed into the outer cylinder assembly 1, the oil passing cylinder 2 is gradually inserted into the inner cylinder assembly 4, the oil hole 2011 in the outer cylinder assembly 1 is gradually reduced, the oil hole 2011 exposed in the inner cylinder assembly 4 is gradually increased, the bottom surface of the inner cylinder body 401 is taken as a dividing line, the oil hole 2011 above the inner cylinder body 401 is increased, the oil hole 2011 below the inner cylinder body 401 is decreased, and when the inner cylinder assembly 4 is pressed down, hydraulic oil enters from the oil hole 2011 below the inner cylinder body 401 and is discharged from the oil hole 2011 above the inner cylinder body 401 and the top oil passing hole 2021, so that the oil inlet hole is reduced, the oil outlet hole is increased, and the flow rate of hydraulic oil is reduced and the hydraulic pressure is increased because the oil inlet hole is reduced.
The outside of the outer cylinder assembly 1 is provided with the spring 3, the upper end and the face lid subassembly 5 rigid coupling of spring 3, the lower extreme and the lower extreme rigid coupling of outer cylinder assembly 1 of spring 3 have avoided spring 3 to take place to rotate in the use like this, also further limited and take place to rotate between outer cylinder assembly 1 and the inner cylinder assembly 4, when the bumper is compressed, spring 3 also can be compressed gradually, the direction elasticity after spring 3 is compressed also can become progressively bigger, this kind of buffer force has become progressively bigger just fits the impact time, therefore the buffer force can resist with the impact force better, when the pressure is withdrawn, under the resilience force of spring 3, the bumper can resume original state, then inner cylinder assembly 4 rise from the inside of outer cylinder assembly 1, and hydraulic oil can flow to the inside of oil through cylinder assembly 2 from top oil feed-through hole 2021 and oilhole 2011, thereby from the oil through cylinder assembly 2 exposes in the oil feed-through cylinder assembly 1 department to the inner chamber of outer cylinder assembly 1.
The cylinder outside of the column casing body 201 is provided with a positioning key groove 2012, the positioning key groove 2012 is provided with a positioning key pin 203, the inner side of the inner cylinder bottom hole 4011 is provided with a bottom hole positioning key groove 4012, the bottom hole positioning key groove 4012 is movably inserted with the positioning key pin 203, because the lower end of the column casing body 201 is fixedly connected with the inner bottom surface of the outer cylinder body 101, the oil passing column casing 2 and the outer cylinder assembly 1 cannot rotate relatively, the oil passing column casing 2 is movably inserted with the positioning key pin 203, the positioning key pin 203 is movably inserted with the bottom hole positioning key groove 4012, the oil passing column casing 2 and the inner cylinder assembly 4 are further limited to not rotate relatively, and therefore the inner cylinder assembly 4 and the outer cylinder assembly 1 cannot rotate relatively.
The limit switch 6 is arranged on the outer side of the outer cylinder assembly 1, the limit switch 6 comprises a switch controller 601 and a switch feeler lever 602 which are movably inserted, the upper end of the switch feeler lever 602 is connected with the face cover assembly 5, and the switch controller 601 is connected with the outer cylinder assembly 1; the limit switch 6 is of prior art and will not be described in detail here.
The outer cylinder assembly 1 comprises an outer cylinder body 101, a first sealing ring 102 is arranged on the upper side of the inner end of the outer cylinder body 101, the inner cylinder assembly 4 comprises an inner cylinder body 401, a second sealing ring 402 is arranged on the outer side of the lower end of the inner cylinder body 401, and hydraulic oil cannot leak when the inner cylinder body and the outer cylinder body are connected in a sliding mode.
The upper end of the inner cylinder assembly 4 is connected with the face cover assembly 5, the face cover assembly 5 comprises a face cover body 501, the face cover body 501 is connected with a switch feeler lever 602 and an oil storage component 502, the face cover body 501 comprises an oil conveying hole 5011, the oil storage component 502 comprises a first oil conveying pipe 5021, the oil conveying hole 5011 is communicated with the first oil conveying pipe 5021, the first oil conveying pipe 5021 is connected with an oil storage cover 5022, the oil storage cover 5022 is connected with a second oil conveying pipe 5023, namely the oil conveying hole 5011, the first oil conveying pipe 5021 and the second oil conveying pipe 5023 are communicated, and the oil storage cover 5022 is in threaded connection with a residual oil tank 5024, so that the oil storage cover 5022 is convenient to assemble and disassemble; when the residual oil tank 5024 is assembled to the oil storage cap 5022, the lower end of the second oil delivery pipe 5023 is arranged to extend to be close to the inner bottom end of the residual oil tank 5024.
The purpose of the arrangement of the residual oil tank 5024 is that, since the inner cylinder body 401 is movably sleeved in the outer cylinder body 101 and the inner cylinder body 401 can be completely pressed into the outer cylinder body 101, the cavity volume of the outer cylinder body 101 is necessarily larger than the cavity volume of the inner cylinder body 401, that is, when the buffer is pressed, hydraulic oil in the cavity of the outer cylinder body 101 flows into the cavity of the inner cylinder body 401, the cavity of the inner cylinder body 401 cannot completely fill the hydraulic oil, and at the moment, the residual hydraulic oil can flow into the residual oil tank 5024 sequentially through the oil delivery hole 5011, the first oil delivery pipe 5021 and the second oil delivery pipe 5023, so that the hydraulic oil in the cavity of the outer cylinder body 101 can completely flow out, and the buffered stroke value is enhanced; when the inner cylinder body 401 rises upward relative to the outer cylinder body 101, the hydraulic oil in the cavity of the inner cylinder body 401 flows back to the cavity of the outer cylinder body 101, and at this time, the cavity of the inner cylinder body 401 is vacuumized, so that the hydraulic oil in the residual oil tank 5024 is also pumped back to the cavity of the inner cylinder body 401 and finally flows back to the cavity of the outer cylinder body 101; the lower end of the second oil delivery pipe 5023 extends to be close to the inner bottom end of the residual oil tank 5024, so that when oil is returned, the oil at the bottommost part of the residual oil tank 5024 can be sucked out of the second oil delivery pipe 5023, the hydraulic oil in the residual oil tank 5024 is guaranteed to flow back as much as possible, and the stability of a system is guaranteed; if there is no residual oil tank 5024, it is still ensured that the inner cylinder body 401 can completely load hydraulic oil in the outer cylinder body 101, and the inner cylinder assembly 4 must be set longer and longer, so that the effect of lower design height of the buffer and reduction of pit digging depth in the technical scheme of the application cannot be achieved.
Finally, it should be noted that: although the present utility model has been described in detail with reference to the embodiments, it should be understood that the utility model is not limited to the preferred embodiments, but is capable of modification and equivalents to some of the features described in the foregoing embodiments, but is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (8)

1. A shock absorber without a base, which is provided with an outer cylinder assembly (1) and an inner cylinder assembly (4), and is characterized in that the inner cylinder assembly (4) is in sliding connection with the outer cylinder assembly (1); the cavity of the outer cylinder assembly (1) is filled with hydraulic oil;
an oil passing column casing (2) is arranged in the outer cylinder assembly (1), a plurality of oil holes (2011) are longitudinally formed in the side of the oil passing column casing (2), and a top oil passing hole (2021) is formed in the upper end of the oil passing column casing (2);
the inner cylinder assembly (4) is provided with an inner cylinder bottom hole (4011), and the inner cylinder bottom hole (4011) is movably sleeved on the oil column tube (2) up and down.
2. A bottomless damper according to claim 1, characterized in that in the compressed state the inner cylinder assembly (4) is fully pressed into the outer cylinder assembly (1); the upper end of the inner cylinder assembly (4) is connected with the face cover assembly (5), the face cover assembly (5) comprises a face cover body (501), an oil conveying hole (5011) is formed in the face cover body (501), and the oil conveying hole (5011) is communicated with the oil storage component (502).
3. The buffer without a base according to claim 1, wherein the oil passing cylinder (2) comprises a cylinder body (201), an oil hole (2011) is formed in the cylindrical surface of the cylinder body (201), a cylinder upper cover (202) is connected above the cylinder body (201), and a top oil passing hole (2021) is formed in the cylinder upper cover (202); the cylinder upper cover (202) is in a circular sheet shape, and the diameter size of the cylinder upper cover (202) is larger than the diameter size of the inner cylinder bottom hole (4011).
4. A buffer without a base according to claim 3, characterized in that a positioning key groove (2012) is arranged on the outer side of the cylinder body (201), a positioning key pin (203) is arranged on the positioning key groove (2012), a bottom hole positioning key groove (4012) is arranged on the inner side of the bottom hole (4011) of the inner cylinder, and the bottom hole positioning key groove (4012) is movably inserted into the positioning key pin (203).
5. The buffer without a base according to claim 2, wherein the oil storage component (502) comprises a first oil delivery pipe (5021), the first oil delivery pipe (5021) is connected with an oil storage cover (5022), the lower end of the oil storage cover (5022) is connected with a second oil delivery pipe (5023), the lower end of the oil storage cover (5022) is in threaded connection with a residual oil tank (5024), and the lower end outlet of the second oil delivery pipe (5023) is close to the inner bottom of the residual oil tank (5024).
6. A base-less damper according to any of claims 1 to 5, wherein the outer cylinder assembly (1) comprises an outer cylinder body (101), a first sealing ring (102) is provided on the upper side of the inner end of the outer cylinder body (101), the inner cylinder assembly (4) comprises an inner cylinder body (401), and a second sealing ring (402) is provided on the outer side of the lower end of the inner cylinder body (401).
7. The buffer without the base according to claim 2, wherein a spring (3) is arranged outside the outer cylinder assembly (1), the upper end of the spring (3) is fixedly connected with the face cover assembly (5), and the lower end of the spring (3) is fixedly connected with the lower end of the outer cylinder assembly (1).
8. A buffer without a base according to claim 2, characterized in that the outer side of the outer cylinder assembly (1) is provided with a limit switch (6), the limit switch (6) comprises a switch controller (601) and a switch feeler lever (602) which are movably inserted, the upper end of the switch feeler lever (602) is connected with the face cover assembly (5), and the switch controller (601) is connected with the outer cylinder assembly (1).
CN202311367483.4A 2023-10-21 2023-10-21 Buffer without base Pending CN117249189A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311367483.4A CN117249189A (en) 2023-10-21 2023-10-21 Buffer without base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311367483.4A CN117249189A (en) 2023-10-21 2023-10-21 Buffer without base

Publications (1)

Publication Number Publication Date
CN117249189A true CN117249189A (en) 2023-12-19

Family

ID=89135051

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311367483.4A Pending CN117249189A (en) 2023-10-21 2023-10-21 Buffer without base

Country Status (1)

Country Link
CN (1) CN117249189A (en)

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