CN203756846U - Plunger-type hydraulic buffer - Google Patents
Plunger-type hydraulic buffer Download PDFInfo
- Publication number
- CN203756846U CN203756846U CN201420162464.8U CN201420162464U CN203756846U CN 203756846 U CN203756846 U CN 203756846U CN 201420162464 U CN201420162464 U CN 201420162464U CN 203756846 U CN203756846 U CN 203756846U
- Authority
- CN
- China
- Prior art keywords
- plunger
- oil cylinder
- cylinder body
- guide nut
- hole
- 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.)
- Expired - Fee Related
Links
Landscapes
- Actuator (AREA)
Abstract
The utility model discloses a plunger-type hydraulic buffer which comprises an oil cylinder component, a guide nut, a return spring, a plunger component and a travel switch. The lower portion of the plunger component hermetically penetrates the guide nut and hermetically and movably enters an inner cavity of an oil cylinder body through a piston component, a control rod in the oil cylinder component penetrates a through hole of a floating control board and is connected with a spring support, so that the plunger component can vertically move along the control rod, and hydraulic oil in the oil cylinder body is compressed after the piston component enters the oil cylinder body, so that the hydraulic oil enters an inner cavity of a plunger body through a throttling hole in the floating control board. By the aid of the plunger-type hydraulic buffer, machining difficulty can be reduced, deceleration of buffer and stop is uniform, and running safety of an elevator is effectively ensured.
Description
Technical field
The utility model relates to a kind of plunger hydraulic buffer.
Background technique
The working procedure of plunger hydraulic buffer: the inertia impact → plunger assembly → plunger of stall car is to the stop that moves (braking) → stall car in oil cylinder.The inertia kinetic energy of stall car passes to hydraulic bjuffer.When bearing shock, move down the air in compression plunger, spring and in-oil cylinder hydraulic oil.Now, in fuel tank, become high-voltage oil cavity, in plunger, become low pressure oil pocket (high pressure air cavity).Therefore hydraulic oil can flow to plunger cavity from fuel tank chamber; Pressurized air can be discharged by venting gas appliance.The area control hydraulic oil that taper controlling rod changes throttle orifice with floating control plate by relative displacement is by the flow of damping hole.To reach the effect that all deceleration moves downward.Buffering course when car clashes into hydraulic bjuffer is apparent, and then under stall car continuous action, hydraulic oil flows to plunger cavity (throttling work done) from fuel tank by throttle orifice, now can produce a large amount of heats.This process is the process of hydraulic bjuffer work done, the process that consumes stall car inertia kinetic energy.
Buffer is after being subject to the shock of stall car, plunger assembly is along axis to lower compression, on plunger assembly, throttle orifice is more and more less by the gap of controlling rod, damping is increasing, cushioning effect is more and more obvious, when on plunger assembly, throttle orifice arrives controlling rod bottom, now gap is minimum, damping is maximum, stall car stop, buffering finishes, this buffering course only has several seconds, except the shock-absorbing capacity requirement to buffer is very high, also very high to the structural requirement of buffer, because be to prolong central axis fast to lower compression during buffer work, so coaxality requirement of controlling rod and cylinder body in cylinder component, guiding and sealing nut, the coaxality requirement of plunger assembly and cylinder component, the coaxality of throttle orifice and controlling rod requires all will be controlled in 0.05mm, so just improved difficulty of processing, increased cost.
Model utility content
The purpose of this utility model is to overcome the defect of prior art and a kind of plunger hydraulic buffer is provided, and it can reduce difficulty of processing, and the retardation that makes to cushion stop is more even, has effectively guaranteed the Security of elevator operation.
The purpose of this utility model is achieved in that a kind of plunger hydraulic buffer, comprises cylinder component, guide nut, return spring, plunger assembly and position limit switch, wherein,
Described cylinder component comprise be filled with hydraulic oil oil cylinder body, be sealed on oil cylinder body lower end base plate and be located at the inner chamber central authorities of oil cylinder body and be fixed on the controlling rod on described base plate;
The internal chamber wall of described guide nut is smooth cylndrical surface, and the bottom of outer surface is provided with the outside thread that the internal thread that arranges with the top of the inner cavity surface of described oil cylinder body is connected, offers a stop hole in the middle part of the wall of this guide nut;
Described plunger assembly comprises plunger body and is fixed on correspondingly venting gas appliance and the piston assembly of the upper and lower port of described plunger body; The middle part outer circumferential face of described plunger body is provided with a restraining groove;
Described return spring is arranged in the inner chamber of described plunger body by a spring support;
Described piston assembly comprise the piston only that is fixedly connected with plunger body, can be up and down and left and right floating ground be located at the floating control plate in the lower lumen of piston only, the surface central authorities of this floating control plate offer the through hole of the diameter adaptation of a diameter and described controlling rod, uniformly in the periphery of this through hole offer some throttle orifices;
Described position limit switch is arranged on the outer surface of described guide nut by a switch bracket, and the contact push rod of the trip switch inserts in the stop through hole on described guide nut;
The lower seal ground of described plunger assembly is through described guide nut and enter movably hermetically the inner chamber of described oil cylinder body by described piston assembly, controlling rod in described cylinder component is connected with described spring support through the through hole of described floating control plate, and described plunger assembly can be moved up and down along described controlling rod; At described piston assembly, enter after described oil cylinder body, compress the hydraulic oil in described oil cylinder body, make hydraulic oil enter the inner chamber of described plunger body by the throttle orifice on described floating control plate.
Above-mentioned plunger hydraulic buffer, wherein, described venting gas appliance comprise a wall top radially offer the upper cover of an exhaust port, be located at upper cover inner chamber top filter screen and be arranged on the rubber collision block on upper cover upper-end surface.
Above-mentioned plunger hydraulic buffer, wherein, described filter screen is also located at the inner chamber top of described upper cover by a sieve box and a capping, offer respectively airflow hole on the diapire of described sieve box and sidewall.
Above-mentioned plunger hydraulic buffer, wherein, described floating control plate is located in the lower lumen of piston only by jump ring.
The technological scheme of plunger hydraulic buffer of the present utility model, floating control plate is installed on to the inner chamber of piston and has certain gap with the internal chamber wall of piston, can free floating, if the coaxality of plunger assembly, cylinder component and controlling rod has deviation, the downward compression work of plunger assembly, floating control plate meeting automatic position adjusting function, remains concentric with controlling rod, until compression finishes.The advantage of plunger hydraulic buffer of the present utility model is: 1) because control panel is to float, so the concentricity tolerance of controlling rod and floating control plate can amplify, to reduce difficulty of processing, but orifice size is constant, flow is also constant, therefore shock-absorbing capacity is constant; 2) coaxality of plunger assembly, controlling rod and oil cylinder requires to have reduced, and difficulty of processing also decreases, and has saved cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of plunger hydraulic buffer of the present utility model;
Fig. 2 is the structural representation of the piston assembly in plunger hydraulic buffer of the present utility model;
Fig. 3 is the structural representation of the venting gas appliance in plunger hydraulic buffer of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Refer to Fig. 1 to Fig. 3, a kind of plunger hydraulic buffer of the present utility model, comprises cylinder component 1, guide nut 2, plunger assembly 3, return spring 4 and position limit switch 7, wherein:
Cylinder component 1 comprise be filled with hydraulic oil oil cylinder body 10, be sealed on oil cylinder body 10 lower end base plate 11 and be located at the inner chamber central authorities of oil cylinder body 10 and be fixed on the controlling rod 12 on 1 base plate 11;
The internal chamber wall of guide nut 2 is smooth cylndrical surface, and the bottom of outer surface is provided with the outside thread that the internal thread that arranges with the top of the inner cavity surface of oil cylinder body 10 is connected, offers a stop hole 20 in the middle part of the wall of this guide nut 2;
Plunger assembly 3 comprises plunger body 30 and is fixed on correspondingly venting gas appliance 5 and the piston assembly 6 of the upper and lower port of plunger body 30; The middle part outer circumferential face of plunger body 30 is provided with a restraining groove 31;
Return spring 4 is arranged in the inner chamber of plunger body 30 by a spring support 40;
Venting gas appliance 5 comprises the rubber collision block 55 that the upper cover 51 of an exhaust port 50 is radially offered on a wall top, the filter screen 54 and that is located at the inner chamber top of upper cover 51 by a sieve box 52 and a capping 53 is arranged on the upper-end surface of upper cover 51; On the diapire of sieve box 52 and sidewall, offer respectively airflow hole;
Piston assembly 6 comprise the piston only 60 that is fixedly connected with plunger body 30, can be up and down and left and right floating ground be located at the floating control plate 61 in the lower lumen of piston only 60, the surface central authorities of this floating control plate 61 offer the through hole of the diameter adaptation of a diameter and controlling rod 12, uniformly in the periphery of this through hole offer six throttle orifices; This floating control plate 61 is located in the lower lumen of piston only 60 by a jump ring 62.
Position limit switch 7 is arranged on the outer surface of guide nut 2 by a switch bracket 70, and the trip is opened 7 contact push rod and inserted in the stop hole 20 on guide nut 2.
Between guide nut 2 and plunger body 30, be provided with liquid airproof circle 21 and O RunddichtringO 22, in order to avoid hydraulic oil leaks, cause environmental pollution.
Between plunger body 60 and oil cylinder body 10, be provided with oil sealing 63 and O RunddichtringO 64, hydraulic oil can only be flowed by the throttle orifice on floating control plate 61.
The lower seal ground of plunger assembly 3 is through guide nut 2 and enter movably hermetically the inner chamber of oil cylinder body 10 by piston assembly 6, controlling rod 12 in cylinder component 1 is connected with spring support 40 through the through hole of floating control plate 61, and plunger assembly 3 can be moved up and down along controlling rod 12; At piston assembly 6, enter after oil cylinder body 10, the hydraulic oil in compression cylinder body 10, makes hydraulic oil enter the inner chamber of plunger body 30 by six throttle orifices on floating control plate 61.
The working procedure of plunger hydraulic buffer of the present utility model: when the collision block 55 of car or counterweight cushion at collision, plunger assembly 3 moves downward, by the hydraulic oil in piston assembly 6 compression cylinder bodies 10, the kinetic energy of elevator is passed to hydraulic oil, now, the inner chamber of oil cylinder body 10 becomes hyperbaric chamber, and the inner chamber of plunger body 30 becomes low-pressure cavity, therefore hydraulic oil can flow to plunger body 30 from oil cylinder body 10; Stop hole 20 on restraining groove in plunger body 30 13 and guide nut 2 when high, the restraining groove 31 in the contact push rod jacking plunger body 30 of position limit switch 7, the compression of plunger assembly 3 finishes, and makes stall car stop.When buffer resets, the potential energy of return spring 4 discharges, and plunger assembly 3 bounce-backs move upward, and the hydraulic oil of outflow is withdrawn in oil cylinder body 10.Controlling rod 12 in oil cylinder body 10 can be controlled the effect that the flow of hydraulic oil by the throttle orifice on floating control plate 61 moves downward to reach even deceleration, thereby guarantees the reliable ramp to stop of elevator safety.
Plunger hydraulic buffer of the present utility model, because floating control plate is installed on the inner chamber of piston and has certain gap with the internal chamber wall of piston, can free floating, thus the concentricity tolerance of controlling rod and floating control plate can amplify, to reduce difficulty of processing.
Above embodiment is only for illustration of the utility model, but not to restriction of the present utility model, person skilled in the relevant technique, in the situation that not departing from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technological schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (4)
1. a plunger hydraulic buffer, comprises cylinder component, guide nut, return spring, plunger assembly and position limit switch, it is characterized in that,
Described cylinder component comprise be filled with hydraulic oil oil cylinder body, be sealed on oil cylinder body lower end base plate and be located at the inner chamber central authorities of oil cylinder body and be fixed on the controlling rod on described base plate;
The internal chamber wall of described guide nut is smooth cylndrical surface, and the bottom of outer surface is provided with the outside thread that the internal thread that arranges with the top of the inner cavity surface of described oil cylinder body is connected, offers a stop hole in the middle part of the wall of this guide nut;
Described plunger assembly comprises plunger body and is fixed on correspondingly venting gas appliance and the piston assembly of the upper and lower port of described plunger body; The middle part outer circumferential face of described plunger body is provided with a restraining groove;
Described return spring is arranged in the inner chamber of described plunger body by a spring support;
Described piston assembly comprise the piston only that is fixedly connected with plunger body, can be up and down and left and right floating ground be located at the floating control plate in the lower lumen of piston only, the surface central authorities of this floating control plate offer the through hole of the diameter adaptation of a diameter and described controlling rod, uniformly in the periphery of this through hole offer some throttle orifices;
Described position limit switch is arranged on the outer surface of described guide nut by a switch bracket, and the contact push rod of the trip switch inserts in the stop through hole on described guide nut;
The lower seal ground of described plunger assembly is through described guide nut and enter movably hermetically the inner chamber of described oil cylinder body by described piston assembly, controlling rod in described cylinder component is connected with described spring support through the through hole of described floating control plate, and described plunger assembly can be moved up and down along described controlling rod; At described piston assembly, enter after described oil cylinder body, compress the hydraulic oil in described oil cylinder body, make hydraulic oil enter the inner chamber of described plunger body by the throttle orifice on described floating control plate.
2. plunger hydraulic buffer according to claim 1, is characterized in that, described venting gas appliance comprise a wall top radially offer the upper cover of an exhaust port, be located at upper cover inner chamber top filter screen and be arranged on the rubber collision block on upper cover upper-end surface.
3. plunger hydraulic buffer according to claim 2, is characterized in that, described filter screen is also located at the inner chamber top of described upper cover by a sieve box and a capping, offer respectively airflow hole on the diapire of described sieve box and sidewall.
4. plunger hydraulic buffer according to claim 1, is characterized in that, described floating control plate is located in the lower lumen of piston only by jump ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420162464.8U CN203756846U (en) | 2014-04-02 | 2014-04-02 | Plunger-type hydraulic buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420162464.8U CN203756846U (en) | 2014-04-02 | 2014-04-02 | Plunger-type hydraulic buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756846U true CN203756846U (en) | 2014-08-06 |
Family
ID=51252126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420162464.8U Expired - Fee Related CN203756846U (en) | 2014-04-02 | 2014-04-02 | Plunger-type hydraulic buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756846U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686050A (en) * | 2017-08-24 | 2018-02-13 | 芜湖市长江起重设备制造有限公司 | A kind of New overhead travelling crane oil pressure anticollision device, collision-prevention device |
| CN108644287A (en) * | 2018-08-03 | 2018-10-12 | 喻建中 | A kind of straight barrel type front damper with high performance |
| CN109987474A (en) * | 2019-04-15 | 2019-07-09 | 上海青浦电梯配件有限公司 | A kind of floating valve plate-type buffer |
| CN113998561A (en) * | 2020-07-28 | 2022-02-01 | 杭州沪宁电梯部件股份有限公司 | Elevator buffer |
| CN113998559A (en) * | 2020-07-28 | 2022-02-01 | 杭州沪宁电梯部件股份有限公司 | Plunger assembly for elevator buffer and elevator buffer |
-
2014
- 2014-04-02 CN CN201420162464.8U patent/CN203756846U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686050A (en) * | 2017-08-24 | 2018-02-13 | 芜湖市长江起重设备制造有限公司 | A kind of New overhead travelling crane oil pressure anticollision device, collision-prevention device |
| CN108644287A (en) * | 2018-08-03 | 2018-10-12 | 喻建中 | A kind of straight barrel type front damper with high performance |
| CN109987474A (en) * | 2019-04-15 | 2019-07-09 | 上海青浦电梯配件有限公司 | A kind of floating valve plate-type buffer |
| CN113998561A (en) * | 2020-07-28 | 2022-02-01 | 杭州沪宁电梯部件股份有限公司 | Elevator buffer |
| CN113998559A (en) * | 2020-07-28 | 2022-02-01 | 杭州沪宁电梯部件股份有限公司 | Plunger assembly for elevator buffer and elevator buffer |
| CN113998561B (en) * | 2020-07-28 | 2024-05-07 | 杭州沪宁电梯部件股份有限公司 | Elevator buffer |
| CN113998559B (en) * | 2020-07-28 | 2024-05-07 | 杭州沪宁电梯部件股份有限公司 | Plunger assembly for elevator buffer and elevator buffer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203756846U (en) | Plunger-type hydraulic buffer | |
| CN202175486U (en) | Hydraulic buffer of gas reset throttling hole for elevator | |
| CN103527697A (en) | Hydro-pneumatic spring suspension cylinder | |
| CN210884794U (en) | Hydraulic buffer | |
| CN102649524A (en) | Hydraulic buffer used for elevator | |
| CN202687688U (en) | Oil buffer | |
| US20040187546A1 (en) | Die cushion apparatus of press machine and surge pressure reduction method for die cushion apparatus | |
| JP2013001481A (en) | Oil-filled buffer of elevator | |
| WO2019000719A1 (en) | Automatic regulating valve of shock absorber and multistep oil drainage method therefor | |
| CN202897718U (en) | Buffer for straight-going lift | |
| CN108547986B (en) | Automatic exhaust device for pressure container | |
| CN101539182B (en) | Piston-type hydraulic buffer | |
| CN203463540U (en) | Guiding seat containing overtravel-preventive nitrogen spring with active safety function | |
| WO2019000720A1 (en) | Self-adjusting hydraulic shock absorber and adjustment method therefor | |
| CN204419758U (en) | A kind of buffering hydraulic cylinder | |
| CN106151354A (en) | A kind of air spring automatic air supply device | |
| CN205204557U (en) | Attenuator is pressed to elevator oil expenses | |
| CN203740788U (en) | High speed hydraulic buffer | |
| CN202038785U (en) | Air pressure buffer of elevator | |
| CN107458943A (en) | A kind of buffer unit being installed in stair shaft | |
| CN106402241A (en) | Air-pressure damping vibration absorber | |
| CN205117886U (en) | Thrust is floated and is cushioned industrial furnace hydraulic cylinder | |
| CN209957176U (en) | Embedded multi-stage elevator buffer | |
| CN101701591A (en) | Air control lifting selector valve | |
| CN106395550A (en) | Hydraulic oil cylinder buffering piston for elevator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |