CN115285905B - Safety dead point mechanism of lifter - Google Patents
Safety dead point mechanism of lifter Download PDFInfo
- Publication number
- CN115285905B CN115285905B CN202210916132.3A CN202210916132A CN115285905B CN 115285905 B CN115285905 B CN 115285905B CN 202210916132 A CN202210916132 A CN 202210916132A CN 115285905 B CN115285905 B CN 115285905B
- Authority
- CN
- China
- Prior art keywords
- motion control
- connecting rod
- mounting plate
- rod seat
- control mechanism
- 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
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 75
- 230000033001 locomotion Effects 0.000 claims abstract description 30
- 238000007906 compression Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 10
- 238000007667 floating Methods 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
- B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms
-
- 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
- F16H—GEARING
- F16H21/00—Gearings comprising primarily only links or levers, with or without slides
- F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
- F16H21/44—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for conveying or interconverting oscillating or reciprocating motions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Types And Forms Of Lifts (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The invention relates to the technical field of logistics transportation and discloses the technical field of a safety dead point mechanism of an elevator, which comprises a mechanism mounting plate, a motion control mechanism, a buffer block and a power mechanism, wherein the motion control mechanism is positioned on the mechanism mounting plate, the buffer block is positioned at the front end of the motion control mechanism, the power mechanism is connected with the motion control mechanism, the existing lifting platforms of some elevators lack necessary protection measures, certain potential safety hazards such as shaking of the lifting platforms, failure of the lifting mechanisms, falling of the platform stall and the like exist.
Description
Technical Field
The invention relates to the technical field of logistics transportation, in particular to the technical field of a safety dead point mechanism of an elevator.
Background
The invention relates to a safety technology of an elevator, belongs to the field of logistics transportation, and is one of safety lifting transportation equipment. The elevator is a multifunctional lifting loading and unloading mechanical device which can finish lifting, descending and other functions, and is widely applied to various industries such as machinery, metallurgy, water conservancy, chemical industry, medical treatment, culture, sanitation and the like. When the transmission angle on the driven member is equal to zero, the effective rotation moment of the driving force on the driven member is zero, the position is called a dead point position of the mechanism, the position where the dead point occurs is a collinear position of the connecting rod and the plane connecting rod mechanism of the crank, and the driven member cannot be driven to move when the connecting rod is positioned at certain specific positions.
Because of the particularity of the movement positions of the elevators, the lifting platforms of some of the existing elevators lack the necessary protection measures, such as only the lowering fixed position waiting for the loading and unloading position to be protected and the raising fixed position waiting for the loading and unloading position to be unprotected; the lifting platform shakes, the lifting mechanism fails, the platform stalls and falls, and certain potential safety hazards exist.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a safety dead point mechanism of an elevator, which can keep a lifting platform in a limited space when the lifting platform is positioned at the highest point, ensure the safety of the lifting mechanism when the lifting mechanism fails and effectively prevent the lifting mechanism from sliding down.
In order to achieve the above purpose, the invention provides a safety dead point mechanism of an elevator, which comprises a mechanism mounting plate, a motion control mechanism, a buffer block and a power mechanism, wherein the motion control mechanism is positioned on the mechanism mounting plate, the buffer block is positioned at the front end of the motion control mechanism, and the power mechanism is connected with the motion control mechanism.
Preferably, the motion control mechanism comprises a connecting rod seat, a compression screw, an oilless bushing, a fixed screw, a bearing and a bearing gasket, wherein the connecting rod seat is arranged on the mechanism mounting plate, the compression screw is connected with the oilless bushing, the fixed screw is movably arranged on the connecting rod seat, and the bearing is connected with the fixed screw through the bearing gasket.
Preferably, the connecting rod seat is provided with a round hole for fixing the compression screw and the oilless bushing, and an arc-shaped groove for adjusting the fixing screw.
Preferably, the power mechanism comprises a cylinder and a floating joint, and the cylinder is connected with a connecting rod seat in the motion control mechanism through the floating joint.
Preferably, the cylinder projecting shaft moves linearly.
Preferably, the device can be additionally provided with a limiting mechanism for connecting the elevator with the mechanism mounting plate in series, and can also be directly connected with the lifting platform.
The invention has the beneficial effects that: according to the safety dead point mechanism of the elevator, the movement of the lifting platform at the starting and ending positions is limited, so that shaking caused by full load and no-load change and falling of the lifting platform caused by failure of a lifting device are reduced, and the safety of the elevator is improved.
When the lifting platform is at the highest point, a certain gap which is convenient for retraction and extension exists among the buffer block, the mechanism mounting plate, the motion control mechanism, the power mechanism and the limiting mechanism.
The features and advantages of the present invention will be described in detail by way of example with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic view of a safety dead center mechanism of an elevator according to the present invention.
Fig. 2 is a front view of the present invention.
In the figure: 1-buffer block, 2-connecting rod seat, 3-cylinder, 4-compression screw, 5-oilless bush, 6-mechanism mounting plate, 7-bearing, 8-bearing washer, 9-set screw, 10-floating joint, 20-motion control mechanism, 30-power mechanism.
Detailed Description
Referring to fig. 1 and 2, the safety dead point mechanism of the elevator comprises a buffer block 1, a mechanism mounting plate 6, a motion control mechanism 20 and a power mechanism 30, wherein the motion mechanism 20 comprises a connecting rod seat 2, a compression screw 4, an oilless bushing 5, a bearing 7, a bearing gasket 8 and a fixing screw 9, and the power mechanism 30 comprises a cylinder 3 and a floating joint 10, and a limiting mechanism is connected with the elevator and the mechanism mounting plate in series.
The working process of the invention comprises the following steps:
In the working process of the safety dead point mechanism of the elevator, the buffer block 1 is fixedly arranged on the connecting rod seat 2, and the connecting rod seat 2 ensures that only rotary motion exists between the connecting rod seat 2 and the mechanism mounting plate 6 through the compression screw 4 and the oilless bushing 5. The movement angle can be controlled within the required range by the fixing screw 9 and the arc-shaped groove on the connecting rod seat 2. The sliding friction generated during guiding between the fixed screw 9 and the connecting rod seat 2 is changed into rolling friction by utilizing the bearing 7 and the bearing gasket 8, so that the movement resistance is reduced. The floating joint 10 is fixedly connected with the connecting rod seat 2 and the air cylinder 3, and the linear motion of the extension shaft of the air cylinder 3 is converted into the swing of the connecting rod seat 2 at a certain angle, namely the swing of the buffer block 1, so that the buffer block 1 is perpendicular to the limiting mechanism.
After the lifting platform of the lifter reaches the highest point, the air cylinder 3 acts, and the linear motion is converted into the circular arc motion of the connecting rod seat 2 and the buffer block 1 through the motion conversion of each component. The invention is essentially equivalent to a link mechanism, and when the lifting device of the lifter fails, such as belt breakage, turbine tooth breakage and chain breakage, the platform falls down, the included angle between the gravity direction and the movement direction of the link seat 2 is 90 degrees, and the lifting device is at a dead point position. All forces are transmitted to the compression screw 4 and the oilless bushing 5 at the same time, and the cylinder 3 is not damaged. The limiting mechanism can enable the lifting platform to be kept in a limited space when being located at the highest point, so that safety of the lifting mechanism when the lifting mechanism fails is guaranteed, and the lifting platform is effectively prevented from sliding downwards.
According to the safety dead point mechanism of the elevator, the movement of the lifting platform at the starting and ending positions is limited, so that shaking caused by full load and no-load change and falling of the lifting platform caused by failure of a lifting device are reduced, and the safety of the elevator is improved.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (2)
1. An elevator safety dead point mechanism which is characterized in that: the device comprises a buffer block (1), a mechanism mounting plate (6), a motion control mechanism (20) and a power mechanism (30), wherein the motion control mechanism (20) is positioned on the mechanism mounting plate (6), the buffer block (1) is positioned at the front end of the motion control mechanism (20), the power mechanism (30) is connected with the motion control mechanism (20), the motion control mechanism comprises a connecting rod seat (2), a compression screw (4), an oilless bushing (5), a fixing screw (9), a bearing (7) and a bearing gasket (8), the connecting rod seat (2) is positioned on the mechanism mounting plate (6), the compression screw (4) is connected with the oilless bushing (5), the fixing screw (9) is movably positioned on the connecting rod seat (2), the bearing (7) is connected with the bearing gasket (8), the fixing screw (9) is connected with the bearing gasket (8), a round hole for fixing the compression screw (4) and the oilless bushing (5) is formed in the connecting rod seat (2), an arc-shaped groove for adjusting the fixing screw (9), the power mechanism (30) comprises a floating cylinder (3) and a control joint (10) which are connected with the floating cylinder (10) through the control joint (20), when the included angle between the gravity direction of the lifting platform and the movement direction of the connecting rod seat (2) is 90 degrees, the safety dead point mechanism of the lifter is positioned at the dead point position, and all forces are transmitted on the compression screw (4) and the oilless bushing (5).
2. A safety dead center mechanism of an elevator as set forth in claim 1, wherein: when the lifting platform is at the highest point, a certain gap which is convenient for retraction and extension exists between the mechanism mounting plate (6) and the limiting mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210916132.3A CN115285905B (en) | 2022-08-01 | 2022-08-01 | Safety dead point mechanism of lifter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210916132.3A CN115285905B (en) | 2022-08-01 | 2022-08-01 | Safety dead point mechanism of lifter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115285905A CN115285905A (en) | 2022-11-04 |
| CN115285905B true CN115285905B (en) | 2024-06-11 |
Family
ID=83825955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210916132.3A Active CN115285905B (en) | 2022-08-01 | 2022-08-01 | Safety dead point mechanism of lifter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115285905B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629318A (en) * | 2017-02-24 | 2017-05-10 | 中国汽车工业工程有限公司 | Elevator locating control device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201437190U (en) * | 2009-06-26 | 2010-04-14 | 上汽通用五菱汽车股份有限公司 | Clamping mechanism for positioning vehicle body tool |
| EP2487130B1 (en) * | 2011-02-14 | 2013-06-05 | Siemens Aktiengesellschaft | Static safety guard for a platform lift and a platform lift with same |
| CN203459844U (en) * | 2013-07-30 | 2014-03-05 | 长城汽车股份有限公司 | Positioning device and conveying system for white car body welding production line |
| CN207581314U (en) * | 2017-11-27 | 2018-07-06 | 昆山韦德智能装备科技有限公司 | The anti-fracture release mechanism of elevator |
| CN208532110U (en) * | 2018-03-12 | 2019-02-22 | 广州功川自动化科技有限公司 | A kind of synchronous lifting mechanism |
-
2022
- 2022-08-01 CN CN202210916132.3A patent/CN115285905B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629318A (en) * | 2017-02-24 | 2017-05-10 | 中国汽车工业工程有限公司 | Elevator locating control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115285905A (en) | 2022-11-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2014059749A1 (en) | Pumping unit capable of automatically adjusting balance | |
| CN101788044A (en) | Pressure transmission mechanism of intermediate connecting plate | |
| CN115285905B (en) | Safety dead point mechanism of lifter | |
| CN211039472U (en) | 360-degree mechanical locking mechanism for hoisting machinery | |
| CN107511822A (en) | A kind of mechanical arm | |
| CN209022057U (en) | A kind of hanger rail type robot lift structure | |
| JP4071521B2 (en) | Lift device | |
| CN208196790U (en) | A kind of novel four axis palletizing mechanical arm | |
| CN208279249U (en) | Lifting drive and hoistable platform with lifting drive | |
| CN205876276U (en) | Horizontal beam -pumping unit of crank connecting rod | |
| CN110374394B (en) | Lifting device of seawater tower and control method thereof | |
| CN110989706A (en) | Tension adjusting device and method for elevator steel wire rope testing machine | |
| CN209367725U (en) | A kind of crane | |
| CN112264967A (en) | Mechanical arm construction work platform | |
| CN221696970U (en) | Mechanical arm of robot | |
| CN212180470U (en) | Main machine crossbeam lifting device for electronic pressure tester | |
| CN220745164U (en) | Protective structure for crane | |
| CN217079875U (en) | Stage overturning equipment driven by crank sliding block | |
| CN2202628Y (en) | Concrete mixer | |
| CN220011999U (en) | Lifting table device | |
| CN218708873U (en) | Electric scissor type lifting platform | |
| KR890002257Y1 (en) | A weight balance equipment for industrial robot | |
| CN216190709U (en) | Automatic lifting mechanism | |
| CN211712117U (en) | Carrying device and plate stacking equipment | |
| CN217076849U (en) | Servo elevating system |
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 |