CN207347061U - A kind of mechanical whole freight weight limit power-off protection apparatus and its ground jack of application - Google Patents
A kind of mechanical whole freight weight limit power-off protection apparatus and its ground jack of application Download PDFInfo
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- CN207347061U CN207347061U CN201721092139.9U CN201721092139U CN207347061U CN 207347061 U CN207347061 U CN 207347061U CN 201721092139 U CN201721092139 U CN 201721092139U CN 207347061 U CN207347061 U CN 207347061U
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- mobile jib
- weight limit
- freight weight
- small lever
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Abstract
The utility model discloses a kind of mechanical whole freight weight limit power-off protection apparatus, including mobile jib, the front end grafting lifting small lever of the mobile jib, the rear end of the small lever is bolted on mobile jib by connecting, protective case is equipped with below the small lever, the protective case is interspersed on mobile jib and is fixedly connected with mobile jib, the upper end of the protective case keeps spacing with small lever, lower end is fixedly connected with nut, freight weight limit spring is placed in protective case, adjusting bolt is cased with the nut, the freight weight limit spring one end is abutted with small lever lower surface, the other end is abutted with the screw tip of adjusting bolt；The mobile jib is equipped with travel switch, and the cursor of the travel switch is connected to the front end of small lever.The utility model has the advantages that cargo whole process hoisting weight can be adjusted, carries out machine overload protection and Electronic control overload protection dual safety to motor.
Description
Technical field
The utility model, which belongs to outside superaltitude room, lifts field, and in particular to a kind of mechanical whole freight weight limit power-off protection dress
The ground jack put and its applied.
Background technology
As China's modernization development is getting faster, urban construction skyscraper is more and more, twenty or thirty floor in city
High building is seen everywhere.The operation such as outdoor high-rise working such as decoration industry, air-conditioning installing and dismounting, the installation of anti-theft net push wave now is most
Scabrous is exactly upper air installing, and outdoor over height stacking operation Hoisting Security risk is big, and the visual field is unknown.Lift by crane nearly hundred meters of twenty or thirty building
Superelevation null process, which easily hooks to touch outdoor objects and cause lifting process steel wire to be broken etc., causes annual accident to occur again and again.
In upper air installing industry, we find the patent No. 201621330936.1, utility model title：A kind of simple lifting
Device, discloses a kind of simple ground jack, the main prypole of the simple ground jack（4）The body of rod in be equipped with can from manipulatable end extract out matching somebody with somebody
Weight bar（7）, weight linear meter（7）Both ends are equipped with banking stop（701）, gag lever post is additionally provided with the manipulatable end（401）, the gag lever post
（401）Position be higher than weight linear meter（7）, and it is less than banking stop（701）Top margin；Work as weight linear meter（7）After extraction, the gag lever post
（401）By weight linear meter（7）The banking stop of non-withdrawal end（701）Clamping.The utility model is small, easy to carry, work efficiency
It is high, save manpower, using simple and be suitable for skyscraper.But the ground jack is in the process risen using electric drive
In, if there is a situation where cargo midway is stuck or when cargo is overweight, it be easy to cause motor overload；Meanwhile the ground jack
Secondary bar afterbody is only a piece of banking stop, can not keep the balance of whole device, and driving device center of gravity is in pole when causing to use
Top, after moving anterior support piece fixing point, center of gravity falls, and there are hidden danger.At present on the market without a kind of whole lifting overload
Monitor the device of protection.
The content of the invention
The purpose of this utility model solves above-mentioned technical problem, there is provided one kind can adjust cargo whole process hoisting weight, to electricity
Machine carry out machine overload protection and Electronic control overload protection dual safety mechanical whole freight weight limit power-off protection apparatus and its
The ground jack of application.
To realize above-mentioned purpose, the technical solution of the utility model is：
A kind of mechanical whole freight weight limit power-off protection apparatus, including mobile jib, the small thick stick of front end grafting lifting of the mobile jib
Bar, the rear end of the small lever are bolted on mobile jib by connecting, and protective case, the protective case are equipped with below the small lever
It is interspersed on mobile jib and is fixedly connected with mobile jib, upper end and the small lever of the protective case keeps spacing, and lower end is fixed with nut
Connection, protective case is interior to place freight weight limit spring, and adjusting bolt, the freight weight limit spring one end and small lever following table are cased with the nut
Face abuts, and the other end is abutted with the screw tip of adjusting bolt；The mobile jib is equipped with travel switch, and the travel switch turns
Swing arm is connected to the front end of small lever, and the travel switch is electrically connected with the driving device of lifting appliance.
As further technical solution, freight weight limit spring described above is connected to away from the 1/3-1/2 of small lever front end.
As further technical solution, the upper end of protective case described above and the spacing of small lever are 3-15mm.
A kind of ground jack, including mechanical whole freight weight limit power-off protection apparatus as mentioned, break in mechanical whole freight weight limit
The small lever front end of electrical protective device sets guider, and suspension hook is equipped with below the guider；Mechanical whole process freight weight limit breaks
The mobile jib rear end of electrical protective device is equipped with fixed frame, and fixed frame is equipped with driving device, and one end of the suspension hook and lifting rope connects,
The other end of lifting rope is connected around guider with driving device, and the lower section of the mobile jib is equipped with support device, the support dress
Put the length away from mobile jib front end accounts for mobile jib length 1/（3-4）；The travel switch of mechanical whole process freight weight limit power-off protection apparatus with
The rising driving part series connection of the driving device.
As further technical solution, driving device described above includes reel, motor and motor remote control switch, described
Motor remote control switch and motor are electrically connected, and the motor and reel are all installed on fixed frame, and the other end of the lifting rope bypasses
Guider is connected with reel, the power output connection of the reel and motor, the travel switch and motor remote control switch
Lifting key is connected.
As further technical solution, fan is additionally provided with above motor described above, the fan is installed on fixed frame
On.
As further technical solution, Current Display and voltage display, institute are additionally provided with fixed frame described above
State Current Display and voltage display is electrically connected with motor.
As further technical solution, fixed frame bottom described above is equipped with traveling wheel.
The secondary bar that can be extracted out from mobile jib rear end, the pair are equipped with as further technical solution, in mobile jib described above
Bar includes the secondary bar body of rod, and the front end of the secondary bar body of rod is arranged in mobile jib, and secondary bar stop tab is equipped with secondary bar lever front end, described
Mobile jib rear end is equipped with the gear-stopping bar for backstop secondary bar stop tab；The rear end of the secondary bar body of rod is arranged on outside mobile jib, in secondary bar bar
The rear end of body is equipped with the secondary bar balancing pole for being used for keeping driving device left-right balance.
As further technical solution, support device described above is made of the support chip of two pieces of rectangular bendings,
One outer surface of support chip and the lower surface of mobile jib connect, and the spacing of two pieces of support chips is 10-12cm；The guider is
Directive wheel.
In the utility model, optimal mobile jib total length is 1.5-2.5m.Optimal counterweight pole length is 1.5-2.5m.Support
Length of the device away from mobile jib front end accounts for the 1/ of mobile jib length（3-4）, stress minimum 1 during lifting:3, maximum 1:8；The former equivalent to
Often increase 10kg counterweights, 30kg can be increased and play weight, the latter can increase 80kg and play weight equivalent to every increase 10kg.
Compared with prior art, the beneficial effects of the utility model are：
1st, the utility model can adjust cargo hoisting weight.
The mechanically whole freight weight limit power-off protection apparatus of the utility model is moved up and down using adjusting bolt to adjust freight weight limit bullet
The decrement of spring, causes small lever to drive termination travel switch by spring-compressed displacement certain angle by the change of decrement
（Limit switch）Action, if adjusting bolt turns downwards, the initial compression amount of freight weight limit spring is small（That is freight weight limit spring is more loose）, then it is small
The affordable lift heavy amount of lever is with regard to small；If adjusting bolt turns upwards, the initial compression amount of freight weight limit spring is big（I.e. freight weight limit spring compared with
Tightly）, then the affordable lift heavy amount of small lever is with regard to big.
2nd, the utility model can carry out overload protection to motor.
The mechanically whole freight weight limit power-off protection apparatus of the utility model can set the initial of freight weight limit spring according to lifting capacity
Decrement, it is assumed that when loop wheel machine set lifting capacity as 100kg, actual use lifting amount be 50KG, within this range, freight weight limit spring
Reset condition is enough to support small lever to be lifted by crane.When in lifting process.Cause to lift by crane object and hook to foreign matter to cause due to colliding with
Lifting capacity increase >=100KG, the compression of freight weight limit camber of spring, small lever front end can be pulled down, and trigger travel switch, and motor rises disconnected
Electricity, then only carries out step-down operation and releases lifting position-limit, realize whole overload protection function.The ground jack of the utility model is also
, to understand the situation of lifting, power-off guarantor manually can be carried out to motor by observing the electric current and voltage and changed power of motor
Shield.Compared to traditional crane, the mechanically whole freight weight limit power-off protection apparatus of the utility model has full safety overload protection
Function, solves the drawbacks of conventional hoist only reaches upper limit ability overload protection.Realize that whole lifting is more safe and efficient.
Have wide range of applications.
3rd, the utility model ground jack is simple in structure, easy to use, safer.
The utility model ground jack uses lever principle, using support device as fulcrum, the installation driving dress on fixed frame
Put as the first counterweight, kill two birds with one stone, that is, realize to lifting the lifting operation of cargo, and realize counterweight, simplify structure.
Meanwhile in order to lift more heavy weight cargo, the utility model has also added weight linear meter in mobile jib, when cargo is overweight,
Weight linear meter can be extracted out out of main prypole, as the second counterweight.The utility model is equipped with the rear end of the secondary bar body of rod to be used to protect
The secondary bar balancing pole of single unit system left-right balance is held, also can be by pair after moving anterior support piece fixing point and causing mass centre changing
Bar balancing pole keeps the balance of single unit system, will not topple over, ensure the safety of hoisting process.
4th, utility model works are efficient.
The utility model ground jack uses lever principle, with the dead weight of 20-30kg, rises and slings higher than more than 3 times of dead weight
Cargo, compared to other ground jacks, beneficial to carrying into skyscraper elevator, and only needs less mass, realizes slinger
Make more efficient.
5th, the utility model design is reasonably distributed, and floor space is small, is convenient for carrying.
The utility model ground jack is using support device as fulcrum, and weight linear meter is closed in main prypole so that counterweight is more reasonable
Increase, and rod-like structure floor space smaller is easily accessible elevator, traveling wheel is additionally provided with below fixed frame, convenient to move
It is dynamic to carry.
6th, the utility model is more suitable for the lifting of skyscraper.
The support device and counterweight of the utility model ground jack need not be arranged on same plane, directly by the utility model
Window side is connected to by support device, driving device is put in ground, support device by two pieces of rectangular bendings support chip
Composition, can be connected to the exterior wall on window side and either inner wall or directly live windowsill by two pieces of stop tabs, in actual operation
It can flexibly adjust, can more tackle the situation that various liftings occur.
7th, the utility model saves manpower.
Since current many upper air installings are all to pull installation by manpower, dangerous big, human cost is high, related personnel's labor
Fatigue resistance is big, by using the utility model, only needs two to three people easily to complete lifting operation.Ensure safety,
Manual labor's intensity is reduced again.
Brief description of the drawings
Fig. 1 is the structure diagram of the mechanically whole freight weight limit power-off protection apparatus of the utility model；
Fig. 2 is the internal structure schematic diagram of the mechanically whole freight weight limit power-off protection apparatus of the utility model；
Fig. 3 is the positive structure schematic of the utility model ground jack；
Fig. 4 is the structure schematic diagram of the utility model ground jack；
Fig. 5 is the utility model ground jack front end enlarged structure schematic diagram；
Fig. 6 is the structure diagram of the utility model secondary bar；
Fig. 7 is the top view of Fig. 6 secondary bars.
Reference numeral：1- small levers, 2- travel switches, 3- mobile jibs, 31- connection bolts, 32- gear-stopping bars, 4- nuts, 5- tune
Section bolt, 6- protective cases, 7- freight weight limit springs, 8- support devices, 9- suspension hooks, 10- guiders, 11- lifting ropes, 12- driving devices,
121- fans, 122- voltage displays, 123- Current Displays, 124- motor remote control switches, 125- fixed frames, 126- motors,
127- reels, 57- motors, 13- traveling wheels, 14- secondary bars, 141- secondary bar balancing poles, the 142- secondary bar bodies of rod, 143- secondary bar backstops
Piece.
Embodiment
The utility model is described in further detail with reference to embodiment, but the embodiment of the utility model is simultaneously
It is not limited to the scope of embodiment expression.
Embodiment 1：
As shown in Figs. 1-2, a kind of mechanical whole freight weight limit power-off protection apparatus, including mobile jib 3, the front end grafting of mobile jib 3
Small lever 1 is used in lifting, and the rear end of small lever 1 is connected on mobile jib 3 by connection bolt 31, and the lower section of small lever 1 is equipped with protective case 6,
Protective case 6 is interspersed on mobile jib 3 and is fixedly connected with mobile jib 3, and upper end and the small lever 1 of protective case 6 keep spacing, lower end and spiral shell
Mother 4 is fixedly connected, and freight weight limit spring 7 is placed in protective case 6, adjusting bolt 5,7 one end of freight weight limit spring and small lever are cased with nut 4
1 lower surface abuts, and the other end is abutted with the screw tip of adjusting bolt 5；Mobile jib 3 is equipped with travel switch 2, travel switch 2
Cursor is connected to the front end of small lever 1.Freight weight limit spring 7 is connected to away from 1 front end 1/3 of small lever.The upper end of protective case 6 with it is small
The spacing of lever 1 is 3mm.
Embodiment 2：
As shown in Figs. 1-2, a kind of mechanical whole freight weight limit power-off protection apparatus, including mobile jib 3, the front end grafting of mobile jib 3
Small lever 1 is used in lifting, and the rear end of small lever 1 is connected on mobile jib 3 by connection bolt 31, and the lower section of small lever 1 is equipped with protective case 6,
Protective case 6 is interspersed on mobile jib 3 and is fixedly connected with mobile jib 3, and upper end and the small lever 1 of protective case 6 keep spacing, lower end and spiral shell
Mother 4 is fixedly connected, and freight weight limit spring 7 is placed in protective case 6, adjusting bolt 5,7 one end of freight weight limit spring and small lever are cased with nut 4
1 lower surface abuts, and the other end is abutted with the screw tip of adjusting bolt 5；Mobile jib 3 is equipped with travel switch 2, travel switch 2
Cursor is connected to the front end of small lever 1.Freight weight limit spring 7 is connected to away from 1 front end 1/2.5 of small lever.The upper end of protective case 6 with
The spacing of small lever 1 is 10mm.
Embodiment 3：
As shown in Figs. 1-2, a kind of mechanical whole freight weight limit power-off protection apparatus, including mobile jib 3, the front end grafting of mobile jib 3
Small lever 1 is used in lifting, and the rear end of small lever 1 is connected on mobile jib 3 by connection bolt 31, and the lower section of small lever 1 is equipped with protective case 6,
Protective case 6 is interspersed on mobile jib 3 and is fixedly connected with mobile jib 3, and upper end and the small lever 1 of protective case 6 keep spacing, lower end and spiral shell
Mother 4 is fixedly connected, and freight weight limit spring 7 is placed in protective case 6, adjusting bolt 5,7 one end of freight weight limit spring and small lever are cased with nut 4
1 lower surface abuts, and the other end is abutted with the screw tip of adjusting bolt 5；Mobile jib 3 is equipped with travel switch 2, travel switch 2
Cursor is connected to the front end of small lever 1.Freight weight limit spring 7 is connected to away from 1 front end 1/2 of small lever.The upper end of protective case 6 with it is small
The spacing of lever 1 is 15mm.
Embodiment 4：
As shown in fig. 3 to 7, a kind of ground jack, includes the mechanical whole freight weight limit power-off protection apparatus of embodiment 1, in machine
1 front end of small lever of tool formula whole process freight weight limit power-off protection apparatus sets guider 10, and the lower section of guider 10 is equipped with suspension hook 9；
3 rear end of mobile jib of mechanical whole process freight weight limit power-off protection apparatus is equipped with fixed frame 125, and fixed frame 125 is equipped with driving device 12,
Suspension hook 9 is connected with one end of lifting rope 11, and the other end of lifting rope 11 is connected around guider 10 with driving device 12, mobile jib 3
Lower section is equipped with support device 8, and length of the support device 8 away from 3 front end of mobile jib accounts for the 1/3 of 3 length of mobile jib；Mechanical whole process freight weight limit breaks
The travel switch 2 of electrical protective device is connected with the rising driving part of driving device 12.Driving device 12 includes reel 127, electricity
Machine 126 and motor remote control switch 124, motor remote control switch 124 and motor 126 are electrically connected, and motor 126 and reel 127 are all installed
On fixed frame 125, the other end of lifting rope 11 is connected around guider 10 with reel 127, and reel 127 is dynamic with motor 126
Power output connection, travel switch 2 are connected with the lifting key of motor remote control switch 124.The top of motor 126 is additionally provided with fan 121, wind
Fan 121 is installed on fixed frame 125.Current Display 123 and voltage display 122 are additionally provided with fixed frame 125, electric current is shown
Device 123 and voltage display 122 are electrically connected with motor 126.125 bottom of fixed frame is equipped with traveling wheel 13.Being equipped with mobile jib 3 can be from
The secondary bar 14 of 3 rear end of mobile jib extraction, secondary bar 14 include the secondary bar body of rod 142, and the front end of the secondary bar body of rod 142 is arranged in mobile jib 3, in pair
142 front end of club shaft is equipped with secondary bar stop tab 143, and 3 rear end of mobile jib is equipped with the gear-stopping bar 32 for backstop secondary bar stop tab 143；
The rear end of the secondary bar body of rod 142 is arranged on outside mobile jib 3, is equipped with the rear end of the secondary bar body of rod 142 and is used to keep driving device 12 or so flat
The secondary bar balancing pole 141 of weighing apparatus.Support device 8 is made of the support chip of two pieces of rectangular bendings, one outer surface of support chip and master
The lower surface connection of bar 3, the spacing of two pieces of support chips is 10cm；Guider 10 is directive wheel.
Embodiment 5：
As shown in fig. 3 to 7, a kind of ground jack, includes the mechanical whole freight weight limit power-off protection apparatus of embodiment 2, in machine
1 front end of small lever of tool formula whole process freight weight limit power-off protection apparatus sets guider 10, and the lower section of guider 10 is equipped with suspension hook 9；
3 rear end of mobile jib of mechanical whole process freight weight limit power-off protection apparatus is equipped with fixed frame 125, and fixed frame 125 is equipped with driving device 12,
Suspension hook 9 is connected with one end of lifting rope 11, and the other end of lifting rope 11 is connected around guider 10 with driving device 12, mobile jib 3
Lower section is equipped with support device 8, and length of the support device 8 away from 3 front end of mobile jib accounts for the 1/4 of 3 length of mobile jib；Mechanical whole process freight weight limit breaks
The travel switch 2 of electrical protective device is connected with the rising driving part of driving device 12.Driving device 12 includes reel 127, electricity
Machine 126 and motor remote control switch 124, motor remote control switch 124 and motor 126 are electrically connected, and motor 126 and reel 127 are all installed
On fixed frame 125, the other end of lifting rope 11 is connected around guider 10 with reel 127, and reel 127 is dynamic with motor 126
Power output connection, travel switch 2 are connected with the lifting key of motor remote control switch 124.The top of motor 126 is additionally provided with fan 121, wind
Fan 121 is installed on fixed frame 125.Current Display 123 and voltage display 122 are additionally provided with fixed frame 125, electric current is shown
Device 123 and voltage display 122 are electrically connected with motor 126.125 bottom of fixed frame is equipped with traveling wheel 13.Being equipped with mobile jib 3 can be from
The secondary bar 14 of 3 rear end of mobile jib extraction, secondary bar 14 include the secondary bar body of rod 142, and the front end of the secondary bar body of rod 142 is arranged in mobile jib 3, in pair
142 front end of club shaft is equipped with secondary bar stop tab 143, and 3 rear end of mobile jib is equipped with the gear-stopping bar 32 for backstop secondary bar stop tab 143；
The rear end of the secondary bar body of rod 142 is arranged on outside mobile jib 3, is equipped with the rear end of the secondary bar body of rod 142 and is used to keep driving device 12 or so flat
The secondary bar balancing pole 141 of weighing apparatus.Support device 8 is made of the support chip of two pieces of rectangular bendings, one outer surface of support chip and master
The lower surface connection of bar 3, the spacing of two pieces of support chips is 11cm；Guider 10 is directive wheel.
Embodiment 6：
As shown in fig. 3 to 7, a kind of ground jack, includes the mechanical whole freight weight limit power-off protection apparatus of embodiment 3, in machine
1 front end of small lever of tool formula whole process freight weight limit power-off protection apparatus sets guider 10, and the lower section of guider 10 is equipped with suspension hook 9；
3 rear end of mobile jib of mechanical whole process freight weight limit power-off protection apparatus is equipped with fixed frame 125, and fixed frame 125 is equipped with driving device 12,
Suspension hook 9 is connected with one end of lifting rope 11, and the other end of lifting rope 11 is connected around guider 10 with driving device 12, mobile jib 3
Lower section is equipped with support device 8, and length of the support device 8 away from 3 front end of mobile jib accounts for the 1/4 of 3 length of mobile jib；Mechanical whole process freight weight limit breaks
The travel switch 2 of electrical protective device is connected with the rising driving part of driving device 12.Driving device 12 includes reel 127, electricity
Machine 126 and motor remote control switch 124, motor remote control switch 124 and motor 126 are electrically connected, and motor 126 and reel 127 are all installed
On fixed frame 125, the other end of lifting rope 11 is connected around guider 10 with reel 127, and reel 127 is dynamic with motor 126
Power output connection, travel switch 2 are connected with the lifting key of motor remote control switch 124.The top of motor 126 is additionally provided with fan 121, wind
Fan 121 is installed on fixed frame 125.Current Display 123 and voltage display 122 are additionally provided with fixed frame 125, electric current is shown
Device 123 and voltage display 122 are electrically connected with motor 126.125 bottom of fixed frame is equipped with traveling wheel 13.Being equipped with mobile jib 3 can be from
The secondary bar 14 of 3 rear end of mobile jib extraction, secondary bar 14 include the secondary bar body of rod 142, and the front end of the secondary bar body of rod 142 is arranged in mobile jib 3, in pair
142 front end of club shaft is equipped with secondary bar stop tab 143, and 3 rear end of mobile jib is equipped with the gear-stopping bar 32 for backstop secondary bar stop tab 143；
The rear end of the secondary bar body of rod 142 is arranged on outside mobile jib 3, is equipped with the rear end of the secondary bar body of rod 142 and is used to keep driving device 12 or so flat
The secondary bar balancing pole 141 of weighing apparatus.Support device 8 is made of the support chip of two pieces of rectangular bendings, one outer surface of support chip and master
The lower surface connection of bar 3, the spacing of two pieces of support chips is 12cm；Guider 10 is directive wheel.
In use, regulating the initial compression amount of freight weight limit spring 7 with adjusting bolt 5, support device 8 is then stuck in window side
The outer wall of wall either on inner wall or windowsill, place on the ground, keeps overall by secondary bar balancing pole 141 by driving device 12
Balance, starts the decline key of motor remote control switch 124 and puts down suspension hook 9, suspension hook 9 catches on cargo, starts on motor remote control switch 124
Key is risen, cargo is lifted；When the heavy burden of driving device 12 is not enough to lifting cargo, secondary bar 14 is extracted out from 3 rear end of mobile jib, its
On non-withdrawal end clamping gear-stopping bar 32, the connection of mobile jib 3 and secondary bar 14 is kept；When cargo is overweight or is being stuck in midair,
Freight weight limit spring 7 is further compressed, and small lever 1 pushes triggering travel switch 2, and motor 126 rises power-off, then only carries out
Step-down operation releases lifting position-limit, realizes whole overload protection function.
In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " preceding ",
The orientation of the instruction such as " rear ", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " or position are closed
It is to be described based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplifying, rather than
Indicate or imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore cannot
It is interpreted as the limitation to scope of protection of the utility model.
It is last it is to be noted that：Above example is only to illustrate the technical solution of the utility model, rather than it is limited
System.Although the utility model is described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should manage
Solution：It can still modify the technical solution described in foregoing embodiments, or to which part technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model
The spirit and scope of technical solution.
Claims (10)
1. a kind of mechanical whole freight weight limit power-off protection apparatus, including mobile jib（3）, it is characterised in that：The mobile jib（3）Front end
Grafting lifting small lever（1）, the small lever（1）Rear end by connection bolt（31）It is connected to mobile jib（3）On, the small thick stick
Bar（1）Lower section is equipped with protective case（6）, the protective case（6）It is interspersed in mobile jib（3）Upper and and mobile jib（3）It is fixedly connected, the guarantor
Sheath（6）Upper end and small lever（1）Keep spacing, lower end and nut（4）It is fixedly connected, protective case（6）Interior placement freight weight limit bullet
Spring（7）, the nut（4）Inside it is cased with adjusting bolt（5）, the freight weight limit spring（7）One end and small lever（1）Lower surface abuts,
The other end and adjusting bolt（5）Screw tip abut；The mobile jib（3）It is equipped with travel switch（2）, the travel switch
（2）Cursor be connected to small lever（1）Front end.
2. mechanical whole freight weight limit power-off protection apparatus according to claim 1, it is characterised in that：The freight weight limit spring
（7）It is connected to away from small lever（1）At the 1/3-1/2 of front end.
3. mechanical whole freight weight limit power-off protection apparatus according to claim 1, it is characterised in that：The protective case（6）
Upper end and small lever（1）Spacing be 3-15mm.
A kind of 4. ground jack, it is characterised in that：Including the mechanical whole freight weight limit power-off as any one of claim 1-3
Protective device, in the small lever of mechanical whole freight weight limit power-off protection apparatus（1）Front end sets guider（10）, the guiding
Device（10）Lower section is equipped with suspension hook（9）；The mobile jib of mechanical whole process freight weight limit power-off protection apparatus（3）Rear end is equipped with fixed frame
（125）, fixed frame（125）It is equipped with driving device（12）, the suspension hook（9）With lifting rope（11）One end connection, lifting rope（11）
The other end bypass guider（10）With driving device（12）Connection, the mobile jib（3）Lower section be equipped with support device（8）,
The support device（8）Away from mobile jib（3）The length of front end accounts for mobile jib（3）The 1/ of length（3-4）；Mechanical whole process freight weight limit power-off is protected
The travel switch of protection unit（2）With the driving device（12）Rising driving part series connection.
5. ground jack according to claim 4, it is characterised in that：The driving device（12）Including reel（127）, motor
（126）With motor remote control switch（124）, the motor remote control switch（124）And motor（126）It is electrically connected, the motor（126）
And reel（127）All it is installed on fixed frame（125）On, the lifting rope（11）The other end bypass guider（10）With reel
（127）Connection, the reel（127）With motor（126）Power output connection, the travel switch（2）Opened with motor remote control
Close（124）Lifting key series connection.
6. ground jack according to claim 5, it is characterised in that：The motor（126）Top is additionally provided with fan（121）,
The fan（121）Installed in fixed frame（125）On.
7. ground jack according to claim 5, it is characterised in that：The fixed frame（125）On be additionally provided with Current Display
（123）And voltage display（122）, the Current Display（123）And voltage display（122）With motor（126）It is electrically connected.
8. ground jack according to claim 4, it is characterised in that：The fixed frame（125）Bottom is equipped with traveling wheel（13）.
9. ground jack according to claim 4, it is characterised in that：The mobile jib（3）Interior be equipped with can be from mobile jib（3）Take out rear end
The secondary bar gone out（14）, the secondary bar（14）Including the secondary bar body of rod（142）, the secondary bar body of rod（142）Front end be arranged on mobile jib（3）
It is interior, in the secondary bar body of rod（142）Front end is equipped with secondary bar stop tab（143）, the mobile jib（3）Rear end, which is equipped with, is used for backstop secondary bar backstop
Piece（143）Gear-stopping bar（32）；The secondary bar body of rod（142）Rear end be arranged on mobile jib（3）Outside, in the secondary bar body of rod（142）After
End, which is equipped with, to be used to keep driving device（12）The secondary bar balancing pole of left-right balance（141）.
10. ground jack according to claim 4, it is characterised in that：The support device（8）By two pieces of rectangular bendings
Support chip composition, one outer surface of support chip and mobile jib（3）Lower surface connection, the spacing of two pieces of support chips is 10-
12cm；The guider（10）For directive wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721092139.9U CN207347061U (en) | 2017-08-29 | 2017-08-29 | A kind of mechanical whole freight weight limit power-off protection apparatus and its ground jack of application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109353941A (en) * | 2018-12-12 | 2019-02-19 | 柳州中科科技有限公司 | Rush to summit power-off and whole freight weight limit power-off protection apparatus and ground jack for ground jack |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109353941A (en) * | 2018-12-12 | 2019-02-19 | 柳州中科科技有限公司 | Rush to summit power-off and whole freight weight limit power-off protection apparatus and ground jack for ground jack |
| CN109353941B (en) * | 2018-12-12 | 2024-02-06 | 柳州中科科技有限公司 | Top-punching power-off and full-range weight-limiting power-off protection device for jack and jack |
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