CN109592618A - Twin columns car lift topples over warning device - Google Patents
Twin columns car lift topples over warning device Download PDFInfo
- Publication number
- CN109592618A CN109592618A CN201811423999.5A CN201811423999A CN109592618A CN 109592618 A CN109592618 A CN 109592618A CN 201811423999 A CN201811423999 A CN 201811423999A CN 109592618 A CN109592618 A CN 109592618A
- Authority
- CN
- China
- Prior art keywords
- chip microcontroller
- pallet
- alarm
- lifting
- twin columns
- 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
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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
-
- 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
- B66F2700/00—Lifting apparatus
- B66F2700/12—Lifting platforms for vehicles or motorcycles or similar lifting apparatus
Abstract
The present invention proposes that twin columns car lift topples over warning device, including twin columns car lift ontology, for the twin columns car lift with multiple pallet lifting automobiles of the vertical lifting at two support columns, the warning device includes single-chip microcontroller, alarm device and the pressure sensor at each pallet；The pressure sensor is connected through variable resistance circuit with single-chip microcontroller；The adjustable variable rheostat of resistance value is equipped in the variable resistance circuit；When pallet lifting automobile, vehicle weight compressive pressure sensor makes its change in resistance to change output level of the variable resistance circuit to single-chip microcontroller, when output level variation reaches threshold value, single-chip microcontroller determines that the automobile of current lifting movement topples over that risk is larger, and single-chip microcontroller controls alarm device alarm；The present invention can detect the stress condition of each pallet of lifting machine, to effectively carry out overturning-preventing detection to vehicle hoisting operation.
Description
Technical field
The present invention relates to automotive service equipement technical field, especially twin columns car lift topples over warning device.
Background technique
Automobile is shown in not newly repeatly the phenomenon that lifting machine is fallen, and causes very big danger, and double-column lifter is more realized now
Automobile lifting, could not detect whether four fulcrums of lifting machine support to automobile chassis, generation when not toppling over automobile
Early warning.
Summary of the invention
The present invention proposes that twin columns car lift topples over warning device, can examine to the stress condition of each pallet of lifting machine
It surveys, to effectively carry out overturning-preventing detection to vehicle hoisting operation.
The present invention uses following technical scheme.
Twin columns car lift topples over warning device, including twin columns car lift ontology, the twin columns car lift
With multiple pallet lifting automobiles of the vertical lifting at two support columns, the warning device includes single-chip microcontroller, alarm device and sets
Pressure sensor at each pallet；The pressure sensor is connected through variable resistance circuit with single-chip microcontroller；It is set in the variable resistance circuit
There is the adjustable variable rheostat of resistance value；When pallet lifting automobile, vehicle weight compressive pressure sensor makes its change in resistance to change
Become output level of the variable resistance circuit to single-chip microcontroller, when output level variation reaches threshold value, single-chip microcontroller determines current lifting movement
Automobile to topple over risk larger, single-chip microcontroller controls alarm device alarm.
Before pallet lifting automobile, the resistance value of the variable rheostat is adjusted to preset value by car mass, so that variable resistance circuit
It can be used for determining that automobile topples over the level signal of risk to single-chip microcontroller output with the change in resistance of pressure sensor.
The pressure sensor is set to pallet center；The resistance value of pressure sensor increases with the pressure being subject to and is reduced.
Signal power source and signal relay are equipped in the variable resistance circuit；The movable contact of the signal relay is elasticity touching
It puts and is connected with single-chip microcontroller；The coil of signal relay is powered by variable resistance circuit；The pressure sensor and variable rheostat are in variable resistance
It is arranged in series in circuit to limit the electric current of variable resistance circuit；When pallet lifting automobile, if pressure sensor resistance value is too small to be made to become
Electric current in resistance circuit is greater than threshold value, then signal relay movable contact is attracted by coil to signal power source, make signal power source to
Single-chip microcontroller exports high level；When single-chip microcontroller receives the high level of signal power source output, single-chip microcontroller determines current lifting movement
It is larger that automobile topples over risk.
The pallet of the twin columns car lift includes pallet behind left front pallet, right front tray, left back pallet, the right side；It is described
Single-chip microcontroller is 51 single-chip microcontrollers, and P0.0, P0.1, P0.2, P0.3 pin of 51 single-chip microcontrollers are to topple over signal pins；Single-chip microcontroller is additionally provided with
The alarm pin being connected with alarm device；Four topple over signal pins respectively with the signal relay movable contact phase at four pallets
Even；When topple over any of signal pins receive signal power source output high level when, single-chip microcontroller through alarm pin control police
Report device sounds an alarm.
The alarm pin is connected with alarm sound circuit, the warning indicator light circuit in alarm device respectively；The alarm
Sound circuit, warning indicator light circuit are mutually indepedent and can independently alarm.
The single-chip microcontroller is additionally provided with lifting machine and shuts down pin；The lifting machine shuts down pin and is connected with relay is shut down, institute
Shutdown relay is stated to be connected with lifting machine rise button；The height that signal power source exports is received when toppling over any of signal pins
When level, single-chip microcontroller control shuts down relay and is shorted lifting machine rise button, so that lifting machine is risen button and is shielded.
The limit sensors being connected with warning device are equipped at the pallet lift path of the support column, when pallet rises to
When at limit sensors, the alarm activation.
A detection modular pressure, Ke Yiyong is respectively arranged by four tray centers in double-column lifter in the invention patent
Judge that gravity has not in pallet middle, when automobile is on four pallets of lifting machine, have a pallet stress it is abnormal when,
It can sound an alarm and stop lifting movement.For lifting machine, if automobile gravity all in four support dot center,
The probability toppled over is just very low, and the invention is all constantly to go whether detection pressure pallet is abnormal at any one time,
Whole process is safe and reliable.
Pressure detecting function of the invention can be allowed to match with vehicle weight, therefore have by changing variable rheostat resistance value
Very wide versatility.
Detailed description of the invention
The present invention is described in more detail with reference to the accompanying drawings and detailed description:
Attached drawing 1 is circuit diagram of the invention；
Attached drawing 2 is the circuit diagram of variable resistance circuit of the invention；
Attached drawing 3 is the scheme of installation of limit sensors；
Attached drawing 4 is the partial schematic diagram of twin columns car lift；
In figure: 1- pallet；2- support column；3- limit sensors；4- alarm sound circuit；5- warning indicator light circuit；6- lifting
Machine rises button；7- shuts down relay；8- signal relay；9- signal power source；10- single-chip microcontroller；11- pressure sensor；12- becomes
Hinder case；13- pallet lift path.
Specific embodiment
As shown in Figs 1-4, twin columns car lift topples over warning device, including twin columns car lift ontology, described double
For column car lift with 1 lifting automobile of multiple pallets of the vertical lifting at two support columns 2, the warning device includes monolithic
Machine 10, alarm device and the pressure sensor 11 at each pallet；The pressure sensor is connected through variable resistance circuit with single-chip microcontroller；
The adjustable variable rheostat 12 of resistance value is equipped in the variable resistance circuit；When pallet lifting automobile, vehicle weight compressive pressure sensing
Device makes its change in resistance to change output level of the variable resistance circuit to single-chip microcontroller, when output level variation reaches threshold value, monolithic
Machine determines that the automobile of current lifting movement topples over that risk is larger, and single-chip microcontroller controls alarm device alarm.
Before pallet lifting automobile, the resistance value of the variable rheostat is adjusted to preset value by car mass, so that variable resistance circuit
It can be used for determining that automobile topples over the level signal of risk to single-chip microcontroller output with the change in resistance of pressure sensor.
The pressure sensor is set to pallet center；The resistance value of pressure sensor increases with the pressure being subject to and is reduced.
Signal power source 9 and signal relay 8 are equipped in the variable resistance circuit；The movable contact of the signal relay is elasticity
Contact and it is connected with single-chip microcontroller；The coil of signal relay is powered by variable resistance circuit；The pressure sensor and variable rheostat are becoming
It is arranged in series in resistance circuit to limit the electric current of variable resistance circuit；When pallet lifting automobile, if pressure sensor resistance value is too small to be made
Electric current in variable resistance circuit is greater than threshold value, then signal relay movable contact is attracted by coil to signal power source, makes signal power source
High level is exported to single-chip microcontroller；When single-chip microcontroller receives the high level of signal power source output, single-chip microcontroller determines current lifting movement
Automobile to topple over risk larger.
The pallet of the twin columns car lift includes pallet behind left front pallet, right front tray, left back pallet, the right side；It is described
Single-chip microcontroller is 51 single-chip microcontrollers, and P0.0, P0.1, P0.2, P0.3 pin of 51 single-chip microcontrollers are to topple over signal pins；Single-chip microcontroller is additionally provided with
The alarm pin being connected with alarm device；Four topple over signal pins respectively with the signal relay movable contact phase at four pallets
Even；When topple over any of signal pins receive signal power source output high level when, single-chip microcontroller through alarm pin control police
Report device sounds an alarm.
The alarm pin is connected with alarm sound circuit 4, the warning indicator light circuit 5 in alarm device respectively；The police
Report sound circuit, warning indicator light circuit is mutually indepedent and can independently alarm.
The single-chip microcontroller is additionally provided with lifting machine and shuts down pin；The lifting machine shuts down pin and is connected with relay 7 is shut down, institute
Shutdown relay is stated to be connected with lifting machine rise button 6；Signal power source output is received when toppling over any of signal pins
When high level, single-chip microcontroller control shuts down relay and is shorted lifting machine rise button, so that lifting machine is risen button and is shielded.
The limit sensors 3 being connected with warning device are equipped at the pallet lift path 13 of the support column, when on pallet
When rising at limit sensors, the alarm activation.
Embodiment:
Operator, which presses lifting machine rise button, does not put, and lifting machine detects that lifting machine rises button and is in triggering state, then
Lifting movement, when pallet rises at limit sensors, the alarm activation are executed to the automobile on pallet.
When automobile has side to have slope trend, due to the pressure being subject to mitigates resistance value occurs for the pressure sensor at pallet
Become smaller, when the too small electric current made in variable resistance circuit of pressure sensor resistance value is greater than threshold value, signal relay movable contact is by coil
It is attracted to signal power source, signal power source is made to export high level to single-chip microcontroller；When single-chip microcontroller receives the height electricity of signal power source output
Usually, it is larger to determine that the automobile of current lifting movement topples over risk for single-chip microcontroller, sounds an alarm, control shuts down relay and is shorted lifting
Machine rises button, so that lifting machine is risen button and is shielded, and the vehicle hoisting of lifting machine, which acts, to be stopped.
Claims (8)
1. twin columns car lift topples over warning device, including twin columns car lift ontology, the twin columns car lift with
Multiple pallet lifting automobiles of vertical lifting at two support columns, it is characterised in that: the warning device includes single-chip microcontroller, police
Report device and the pressure sensor at each pallet；The pressure sensor is connected through variable resistance circuit with single-chip microcontroller；The variable resistance
The adjustable variable rheostat of resistance value is equipped in circuit；When pallet lifting automobile, vehicle weight compressive pressure sensor makes its resistance value
Variation is to change output level of the variable resistance circuit to single-chip microcontroller, and when output level variation reaches threshold value, single-chip microcontroller determines current
It is larger that the automobile of lifting movement topples over risk, and single-chip microcontroller controls alarm device alarm.
2. twin columns car lift according to claim 1 topples over warning device, it is characterised in that: when pallet lifting automobile
Before, the resistance value of the variable rheostat is adjusted to preset value by car mass, so that variable resistance circuit can be become with the resistance value of pressure sensor
Changing to single-chip microcontroller output can be used for determining that automobile topples over the level signal of risk.
3. twin columns car lift according to claim 2 topples over warning device, it is characterised in that: the pressure sensor
Set on pallet center；The resistance value of pressure sensor increases with the pressure being subject to and is reduced.
4. twin columns car lift according to claim 3 topples over warning device, it is characterised in that: in the variable resistance circuit
Equipped with signal power source and signal relay；The movable contact of the signal relay is resilient contact and is connected with single-chip microcontroller；Signal
The coil of relay is powered by variable resistance circuit；The pressure sensor and variable rheostat are arranged in series to limit and become in variable resistance circuit
The electric current of resistance circuit；When pallet lifting automobile, if the too small electric current made in variable resistance circuit of pressure sensor resistance value is greater than threshold value,
Then signal relay movable contact is attracted by coil to signal power source, and signal power source is made to export high level to single-chip microcontroller；Work as monolithic
When machine receives the high level of signal power source output, it is larger that single-chip microcontroller determines that the automobile of current lifting movement topples over risk.
5. twin columns car lift according to claim 4 topples over warning device, it is characterised in that: the twin columns automobile
The pallet of lifting machine includes pallet behind left front pallet, right front tray, left back pallet, the right side；The single-chip microcontroller is 51 single-chip microcontrollers, and 51 is single
P0.0, P0.1, P0.2, P0.3 pin of piece machine are to topple over signal pins；Single-chip microcontroller is additionally provided with the alarm being connected with alarm device and draws
Foot；Topple over signal pins for four to be connected with the signal relay movable contact at four pallets respectively；When toppling in signal pins
When any one receives the high level of signal power source output, single-chip microcontroller is sounded an alarm through alarm pin control alarm device.
6. twin columns car lift according to claim 5 topples over warning device, it is characterised in that: the alarm pin point
It is not connected with alarm sound circuit, the warning indicator light circuit in alarm device；The alarm sound circuit, warning indicator light circuit
It can independently alarm independently of each other and.
7. twin columns car lift according to claim 5 topples over warning device, it is characterised in that: the single-chip microcontroller is also set
There is lifting machine to shut down pin；The lifting machine shuts down pin and is connected with relay is shut down, the shutdown relay and lifting machine liter
Button is played to be connected；When topple over any of signal pins receive signal power source output high level when, single-chip microcontroller control shut down
Relay is shorted lifting machine and rises button, so that lifting machine is risen button and is shielded.
8. twin columns car lift according to claim 1 topples over warning device, it is characterised in that: the support of the support column
Pan Shengjianglujingchu is equipped with the limit sensors being connected with warning device, when pallet rises at limit sensors, the report
Alarm device starting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811423999.5A CN109592618A (en) | 2018-11-27 | 2018-11-27 | Twin columns car lift topples over warning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811423999.5A CN109592618A (en) | 2018-11-27 | 2018-11-27 | Twin columns car lift topples over warning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109592618A true CN109592618A (en) | 2019-04-09 |
Family
ID=65959677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811423999.5A Pending CN109592618A (en) | 2018-11-27 | 2018-11-27 | Twin columns car lift topples over warning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109592618A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0566195B1 (en) * | 1992-04-14 | 1997-07-30 | Stertil B.V. | Safety ratchet device |
| CN202671130U (en) * | 2012-06-12 | 2013-01-16 | 山东省特种设备检验研究院济宁分院 | Anti-overload and anti-rollover forklift with alarm function |
| CN204204286U (en) * | 2014-03-31 | 2015-03-11 | 李壮豫 | A kind of overload alarm teaching aid |
| CN107055370A (en) * | 2017-04-28 | 2017-08-18 | 赛埃孚汽车保修设备（太仓）有限公司 | A kind of stroke compensating mechanism and its method of work for twin columns elevator |
| CN206447526U (en) * | 2016-12-30 | 2017-08-29 | 重庆樽明汽车零部件有限公司 | A kind of double-column lifter supporting table with prior-warning device |
-
2018
- 2018-11-27 CN CN201811423999.5A patent/CN109592618A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0566195B1 (en) * | 1992-04-14 | 1997-07-30 | Stertil B.V. | Safety ratchet device |
| CN202671130U (en) * | 2012-06-12 | 2013-01-16 | 山东省特种设备检验研究院济宁分院 | Anti-overload and anti-rollover forklift with alarm function |
| CN204204286U (en) * | 2014-03-31 | 2015-03-11 | 李壮豫 | A kind of overload alarm teaching aid |
| CN206447526U (en) * | 2016-12-30 | 2017-08-29 | 重庆樽明汽车零部件有限公司 | A kind of double-column lifter supporting table with prior-warning device |
| CN107055370A (en) * | 2017-04-28 | 2017-08-18 | 赛埃孚汽车保修设备（太仓）有限公司 | A kind of stroke compensating mechanism and its method of work for twin columns elevator |
Non-Patent Citations (2)
| Title |
|---|
| 刘坤: "《51单片机应用系统典型模块开发大全》", 28 February 2013 * |
| 尹学飞: "《汽车实训指导》", 31 March 2017, 北京理工大学出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190409 |
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| RJ01 | Rejection of invention patent application after publication |