CN109516342B - Improved elevator buffer - Google Patents
Improved elevator buffer Download PDFInfo
- Publication number
- CN109516342B CN109516342B CN201910014545.0A CN201910014545A CN109516342B CN 109516342 B CN109516342 B CN 109516342B CN 201910014545 A CN201910014545 A CN 201910014545A CN 109516342 B CN109516342 B CN 109516342B
- Authority
- CN
- China
- Prior art keywords
- cover plate
- axial
- upper cover
- vibration reduction
- cylinder body
- 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.)
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- 239000000872 buffer Substances 0.000 title claims abstract description 35
- 229920001967 Metal rubber Polymers 0.000 claims abstract description 38
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 34
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000006096 absorbing agent Substances 0.000 claims abstract description 30
- 230000009467 reduction Effects 0.000 claims abstract description 19
- 230000035939 shock Effects 0.000 abstract description 9
- 238000013016 damping Methods 0.000 abstract description 6
- 239000006260 foam Substances 0.000 description 22
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Vibration Dampers (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention relates to the technical field of safety protection of special equipment, in particular to an improved elevator buffer, which comprises a base, wherein the base is connected with the bottom of an elevator shaft through bolts; the bottom of the cylinder body is connected with the top surface of the base, and the cylinder body is provided with an axial through cavity; the bottom of the upper cover plate is provided with a support column integrally formed with the upper cover plate; the vibration reduction body is arranged at the bottom of the upper cover plate and sleeved with the support column, and the vibration reduction body is partially positioned in the axial through cavity; the outer spring is sleeved with the vibration reduction body, one axial end of the outer spring abuts against the bottom of the upper cover plate, and the other axial end of the outer spring abuts against the top of the cylinder body. The shock absorber that this application combined metal rubber to make, the impact absorber that foamed aluminum made, parts such as outer spring, the inner spring of specific structure for the life-span of shock absorber is high, and the damping is effectual, and the ability of absorbing the impact is strong, makes the performance of shock absorber obtain greatly improving.
Description
Technical Field
The invention relates to the technical field of safety protection of special equipment, in particular to an improved elevator buffer.
Background
The elevator buffer is a safety protection device arranged at the bottom of the elevator shaft, and plays a role in buffering and damping when the elevator suddenly descends accidentally, so that the elevator is prevented from directly contacting the ground, and passengers are protected; when the normal speed of the elevator is reduced, the elevator buffer plays a role in vibration reduction, and the comfort of passengers is improved. The existing elevator buffers are mainly divided into three types of hydraulic buffers, spring buffers and polyurethane buffers. The hydraulic buffer can generate large impact force when the elevator contacts with the hydraulic buffer, so that secondary injury can be caused to passengers; polyurethane buffers in the harsh environment of an elevator hoistway can rapidly decrease in life if immersed for extended periods of time; the spring damper absorbs the impact energy difference.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides an improved elevator buffer which can effectively reduce vibration, effectively absorb impact force and has long service life.
The technical scheme adopted for solving the technical problems is as follows: an improved elevator buffer comprising
The base is connected with the bottom of the elevator shaft through bolts;
the bottom of the cylinder body is connected with the top surface of the base, and the cylinder body is provided with an axial through cavity;
the bottom of the upper cover plate is provided with a support column integrally formed with the upper cover plate;
the vibration reduction body is arranged at the bottom of the upper cover plate and sleeved with the support column, and the vibration reduction body is partially positioned in the axial through cavity;
the outer spring is sleeved with the vibration reduction body, one axial end of the outer spring is propped against the bottom of the upper cover plate, and the other axial end of the outer spring is propped against the top of the cylinder body;
the guide ring is sleeved between the vibration reduction body and the outer spring, and one axial end of the guide ring is connected with the top end of the cylinder body;
the lower cover plate is sleeved with the support column and closely contacted with the bottom of the vibration reduction body through a nut;
the impact force absorber is arranged in the axial through cavity, and the bottom of the impact force absorber is connected with the top surface of the base;
and the inner spring is sleeved on the outer periphery of the impact force absorber.
Preferably, the vibration damping body is made of metal rubber.
Preferably, the impact absorber is made of aluminum foam.
Preferably, the top of the impact absorber is provided with a groove matched with the end part of the nut and the end part of the support column.
Preferably, the axial height of the inner spring is higher than the height of the impact absorber.
Preferably, the axial through cavity, the vibration reduction body, the impact force absorber and the lower cover plate are all cylindrical.
Preferably, the outer circumference radius of the inner spring is the same as the radius of the axial through cavity.
Preferably, the radius of the inner ring of the guide ring is smaller than the radius of the axial through cavity.
Preferably, one axial end of the inner spring abuts against the bottom of the lower cover plate.
Preferably, the stiffness of the inner spring is greater than the stiffness of the outer spring.
The shock absorber has the beneficial effects that the shock absorber is combined with the shock absorber made of metal rubber, the impact absorber made of foamed aluminum, the outer spring, the inner spring and other parts with specific structures, so that the shock absorber has long service life, good shock absorption effect and strong capability of absorbing impact, and the performance of the shock absorber is greatly improved.
Drawings
Fig. 1 is a cross-sectional view of an improved elevator buffer of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the buffer in FIG. 1;
wherein, 1, a base, 2, bolts, 3, a cylinder body, 4, a guide ring, 5, an outer spring, 6 and an upper cover plate, 7, a vibration reduction body, 8, a lower cover plate, 9, a nut, 10, an impact force absorber, 11 and an inner spring.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 and 2, an improved elevator buffer comprises a base 1 fixedly connected with the bottom of an elevator shaft, bolts 2 fixedly used by the base 1, a cylindrical cylinder body 3 fixedly connected with the base 1, a cylindrical foam aluminum impact absorber 10, an inner spring 11, a cylindrical metal rubber vibration damper 7, a lower cover plate 8 at the lower end of the vibration damper 7, an upper cover plate 6 on the upper surface of the vibration damper 7, a connecting nut 9 for the upper cover plate 6 and the lower cover plate 8, an outer spring 5 wrapping the vibration damper 7 and a guide ring 4 positioned on the upper surface of the cylinder body 3. The positions and connections of the components are: the base is a base of 1 integral components and is used for supporting the main body part of the buffer and fixedly connected with the bottom of the elevator shaft in a bolt 2 mode. The cylinder body 2 is positioned on the upper surface of the base 1 and is fixedly connected with the base. The inner part of the axial through cavity of the cylinder body 1 is provided with an aluminum foam impact absorber 10 and an inner spring 11, the aluminum foam impact absorber 10 is arranged in the inner spring, the aluminum foam impact absorber and the inner spring are simultaneously arranged in the cylinder body 1, and the lower part of the inner spring 11 is in contact connection with the upper surface of the base 1. The support column of upper cover plate 6 passes the hole in the middle of metal rubber damping body 7, and lower apron 8 is located the lower surface of metal rubber damping body 7, and the support column of upper cover plate 6 passes through nut 9 with lower apron 8 to be connected, and upper and lower apron presss from both sides metal rubber damping body 7 in the centre. The upper cover plate 6, the metal rubber and the lower cover plate 8 are connected together through the support column of the upper cover plate, the tail end of the support column is carved with threads, and the upper cover plate and the lower cover plate are fixed with the metal rubber through nuts 9.
The lower cover plate 8 is in contact with the upper portion of the inner spring 11. The upper surface of the cylinder body 3 is provided with a guide ring 4 through which a metal rubber vibration damper 7 passes. The inner diameter of the guide ring 4 is slightly smaller than the inner diameter of the cylinder body 4 and is equal to the diameter of the metal rubber, and the inner diameter of the guide ring 4 is in clearance fit with the diameter of the metal rubber. The guide ring 4 is coaxial with the upper and lower cover plates and the metal rubber, and when the upper cover plate 6 is stressed, the upper cover plate 6, the metal rubber and the lower cover plate 8 descend as a whole along the axis of the guide ring 4. The upper surface of the cylinder body 3 is provided with an outer spring 5, one axial end of the outer spring 5 is contacted with the upper surface of the cylinder body 3, the other axial end is contacted with the lower surface of a circular plate of the upper cover plate 6, and the outer spring 5 is sleeved on the outer periphery side of the metal rubber vibration damper 7 and the guide ring 4.
The damper of the present application comprises two special materials, namely metal rubber located between the upper and lower cover plates and aluminum foam inside the cylinder 3. The metal rubber and the foamed aluminum have slow performance degradation in a long-term soaking environment, and can be suitable for complex and severe working conditions. The metal rubber has a vibration reduction effect, when the elevator is in contact with the upper cover plate, a large amount of impact force is transmitted, so that the elevator and the buffer generate a large amount of vibration, and the metal rubber and the outer spring 5 work in a combined mode, so that the vibration and part of impact force can be directly reduced. The foam aluminum in the cylinder body 3 is used for absorbing impact force, and the lower cover plate 8 transmits the impact force born by the metal rubber to the inner spring 11 and the foam aluminum material, so that the impact force is further reduced. The metal rubber has a pore structure, has good vibration reduction and absorption performances, and eliminates strong vibration generated when the elevator car rapidly descends and the upper cover plate contacts. The function of the foam aluminum is to absorb impact force, and the foam aluminum is added on the basis of the two-stage spring mechanism, so that the impact force absorbing capacity of the elevator buffer can be greatly improved.
The damper of the present application comprises a secondary spring mechanism, an outer spring 5 is respectively contacted with the lower side of an upper cover plate 6 and the upper surface of a cylinder body 3, the rigidity of the outer spring 5 is smaller than that of an inner spring 11, directly bear the impact force transmitted by the upper cover plate 6 and reset the upper cover plate, the lower cover plate and the metal rubber after eliminating the impact force and vibration. The inner spring 11 is located inside the cylinder body, one axial end is in contact with the lower cover plate 8, the other axial end is in contact connection with the upper surface of the base 1, the height of the inner spring 11 is slightly higher than that of the foamed aluminum, when the buffer does not work, the inner spring 11 only bears part of the weight of the metal rubber and the upper and lower cover plates, and the length of the inner spring 11 is larger than that of the foamed aluminum. When an external force is applied to the upper cover plate 6, the metal rubber and the lower cover plate 8 move downwards as a whole, and the lower cover plate 8 compresses the inner spring 11 to further slow down the impact force. The inner and outer springs absorb external impact force during operation, the outer springs 5 bear part of the weight of the upper cover plate 6, and the lower cover plate 8 bears part of the weight of the upper and lower cover plates and the metal rubber. When the buffer is in the original position, the inner spring and the outer spring are in a compressed state due to the gravity of the upper cover plate, the lower cover plate and the metal rubber. When the inner spring 11 bears gravity only, the height of the spring is larger than that of the foam aluminum, so that the lower cover plate is prevented from directly contacting the foam aluminum. When in daily work, the foam aluminum can not contact with the lower cover plate, and the foam aluminum does not need to work.
The upper cover plate 6 is a combination of a disc and a cylindrical support column, the support column can directly penetrate through the metal rubber and the central hole of the lower cover plate 8, the support column of the upper cover plate 6 is fixedly connected with the lower cover plate 8 through a nut 9, the metal rubber is cylindrical, a through hole is formed in the middle of the metal rubber, and the metal rubber is clamped between the disc of the upper cover plate 6 and the lower cover plate 8. The upper cover plate 6 can be directly contacted with the bottom of the elevator car, and the upper cover plate 6, the metal rubber and the lower cover plate 8 can axially move along the guide ring 4 as a whole.
The foam aluminum is positioned in the cylinder body 3, is cylindrical in shape, is provided with a circular groove at the top, and can accommodate the nut 9 and one end of the support column of the upper cover plate 6 when the upper cover plate and the lower cover plate are stressed to descend, and the lower cover plate 8 is directly contacted with the upper surface of the foam aluminum, so that the foam aluminum plays a role in reducing impact force. The foam aluminum is the cylinder, and the circular recess degree of depth at top is greater than the support column extension end portion of upper cover plate 6, and when the buffer atress, lower apron 8 moves down, directly contacts with the foam aluminum, but because the recess, upper cover plate support column and nut 9 can not contact the foam aluminum, avoid nut 9 to receive the destruction and become invalid. When the elevator normally falls, the compression amount of the inner spring 11 is small, the lower cover plate cannot contact with foamed aluminum, and the foamed aluminum does not need to absorb impact force.
The base 1 is rectangular and is fixedly connected with the elevator shaft through bolts 2. The cylinder body 3 is placed on the base and fixedly connected with the base.
The working sequence of each part of the elevator buffer is as follows: when the elevator fails and descends rapidly, the upper cover plate 6 contacts the elevator car, the outer spring 5 is compressed, and the metal rubber vibration damper 7 starts to absorb vibration generated by the buffer; the upper and lower cover plates and the metal rubber descend as a whole, and the lower cover plate 8 compresses the inner spring 11; the whole body is further lowered, the lower cover plate 8 is contacted with the foam aluminum impact absorber 10, and the foam aluminum plays a role in absorbing impact. Until the impact force and vibration are completely removed, the inner and outer springs return the components, during the whole process, the metal rubber always plays a role in absorbing vibration. When the elevator works normally, the small compression amount of the two-stage springs can reduce the speed, and the metal rubber vibration damper 7 absorbs vibration; the lower cover plate is not contacted with the foamed aluminum, and the foamed aluminum is in an unoperated state.
The elevator buffer has two working states, one is that the elevator fails and descends rapidly, the compression amount of the two-stage springs is large, and metal rubber and foamed aluminum play roles; and the other is that the elevator works normally, the compression amount of the two-stage springs is small, the metal rubber absorbs vibration, but the foamed aluminum does not work.
The above examples are only illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical scheme of the present invention will fall within the protection scope of the present invention without departing from the design concept of the present invention, and the technical content of the present invention is fully described in the claims.
Claims (8)
1. An improved elevator buffer, characterized in that: comprising
The base (1) is connected with the bottom of the elevator shaft through bolts (2);
the bottom of the cylinder body (3) is connected with the top surface of the base (1), and the cylinder body (3) is provided with an axial through cavity;
the upper cover plate (6), the bottom of the upper cover plate (6) is provided with a support column integrally formed with the upper cover plate;
the vibration reduction body (7) is arranged at the bottom of the upper cover plate (6) and is sleeved with the support column, and part of the vibration reduction body (7) is positioned in the axial through cavity;
the outer spring (5) is sleeved with the vibration reduction body (7), one axial end of the outer spring (5) is propped against the bottom of the upper cover plate (6), and the other axial end of the outer spring is propped against the top of the cylinder body (3);
the guide ring (4) is sleeved between the vibration reduction body (7) and the outer spring (5), and one axial end of the guide ring (4) is connected with the top end of the cylinder body (3);
the lower cover plate (8) is sleeved with the supporting column and closely contacted with the bottom of the vibration reduction body (7) through a nut (9);
the impact force absorber (10) is arranged in the axial through cavity, and the bottom of the impact force absorber (10) is connected with the top surface of the base (1);
an inner spring (11), wherein the inner spring (11) is sleeved on the outer periphery side of the impact force absorber (10);
the top of the impact force absorber (10) is provided with a groove matched with the nut (9) and the end part of the support column;
the axial height of the inner spring (11) is higher than the height of the impact absorber (10).
2. An improved elevator buffer as defined in claim 1, wherein: the vibration damper (7) is made of metal rubber.
3. An improved elevator buffer as defined in claim 1, wherein: the impact absorber (10) is made of foamed aluminum.
4. An improved elevator buffer as defined in claim 1, wherein: the axial through cavity, the vibration reduction body (7), the impact force absorber (10) and the lower cover plate (8) are all cylindrical.
5. An improved elevator buffer as defined in claim 1, wherein: the outer circumference radius of the inner spring (11) is the same as the radius of the axial through cavity.
6. An improved elevator buffer as defined in claim 1, wherein: the radius of the inner ring of the guide ring (4) is smaller than the radius of the axial through cavity.
7. An improved elevator buffer as defined in claim 1, wherein: one axial end of the inner spring (11) is propped against the bottom of the lower cover plate (8).
8. An improved elevator buffer as defined in claim 1, wherein: the stiffness of the inner spring (11) is greater than the stiffness of the outer spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910014545.0A CN109516342B (en) | 2019-01-08 | 2019-01-08 | Improved elevator buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910014545.0A CN109516342B (en) | 2019-01-08 | 2019-01-08 | Improved elevator buffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109516342A CN109516342A (en) | 2019-03-26 |
| CN109516342B true CN109516342B (en) | 2024-02-02 |
Family
ID=65798960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910014545.0A Active CN109516342B (en) | 2019-01-08 | 2019-01-08 | Improved elevator buffer |
Country Status (1)
| Country | Link |
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| CN (1) | CN109516342B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111285228B (en) * | 2020-03-24 | 2021-03-19 | 浙江西沃电梯有限公司 | Damping device and passenger elevator car |
| CN113526296B (en) * | 2021-06-28 | 2022-09-06 | 福建省特种设备检验研究院 | Elevator buffer based on metal rubber |
| CN113860117A (en) * | 2021-09-24 | 2021-12-31 | 福州大学 | Three-way elevator buffer based on metal rubber |
| CN113879937B (en) * | 2021-09-30 | 2022-07-15 | 福州大学 | Elevator buffer and working method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000302353A (en) * | 1999-04-22 | 2000-10-31 | Toshiba Corp | Elevator spring shock absorber |
| JP2003252546A (en) * | 2002-03-01 | 2003-09-10 | Mitsubishi Electric Corp | Elevator shock absorber |
| KR200340820Y1 (en) * | 2003-11-12 | 2004-02-05 | 덕 규 김 | A buffer for elevator |
| CN101481061A (en) * | 2009-02-04 | 2009-07-15 | 上海永大电梯设备有限公司 | Upper mechanical preventing device of vertical lift elevator |
| KR20120005011U (en) * | 2010-12-30 | 2012-07-10 | 덕 규 김 | A buffer for elevator |
| KR20140008938A (en) * | 2012-07-13 | 2014-01-22 | 이미숙 | Buffer device of the elevator |
| CN209493189U (en) * | 2019-01-08 | 2019-10-15 | 福州大学 | An Improved Elevator Buffer |
-
2019
- 2019-01-08 CN CN201910014545.0A patent/CN109516342B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000302353A (en) * | 1999-04-22 | 2000-10-31 | Toshiba Corp | Elevator spring shock absorber |
| JP2003252546A (en) * | 2002-03-01 | 2003-09-10 | Mitsubishi Electric Corp | Elevator shock absorber |
| KR200340820Y1 (en) * | 2003-11-12 | 2004-02-05 | 덕 규 김 | A buffer for elevator |
| CN101481061A (en) * | 2009-02-04 | 2009-07-15 | 上海永大电梯设备有限公司 | Upper mechanical preventing device of vertical lift elevator |
| KR20120005011U (en) * | 2010-12-30 | 2012-07-10 | 덕 규 김 | A buffer for elevator |
| KR20140008938A (en) * | 2012-07-13 | 2014-01-22 | 이미숙 | Buffer device of the elevator |
| CN209493189U (en) * | 2019-01-08 | 2019-10-15 | 福州大学 | An Improved Elevator Buffer |
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| Publication number | Publication date |
|---|---|
| CN109516342A (en) | 2019-03-26 |
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