CN206624584U - A kind of improved safety protects crane gear - Google Patents
A kind of improved safety protects crane gear Download PDFInfo
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- CN206624584U CN206624584U CN201720353240.9U CN201720353240U CN206624584U CN 206624584 U CN206624584 U CN 206624584U CN 201720353240 U CN201720353240 U CN 201720353240U CN 206624584 U CN206624584 U CN 206624584U
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- weighing sensor
- improved safety
- crane gear
- reel
- reductor
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Abstract
The utility model discloses a kind of improved safety to protect crane gear, belongs to hoisting machinery technical field.It includes reductor, reel, axle housing, weighing sensor and control circuit；Steel wire rope is wound with the reel, steel wire rope is provided with suspension hook by hanging wheel；One end of reductor and reel is connected；The one end of reel away from reductor is arranged in axle housing by bearing, and axle housing is supported by base；Weighing sensor is arranged between axle housing and base；Control circuit includes power supply, amplifier, comparator, PLC and audible-visual annunciator, and weighing sensor, amplifier, comparator and PLC are sequentially connected with；Power supply connects weighing sensor and comparator；PLC controls audible-visual annunciator.The utility model can be shown and alarmed, check weighing is accurate, stable performance, and long lifespan to the real-time detection of hoisting weight.
Description
Technical field
The utility model belongs to hoisting machinery technical field, and lifting is protected more specifically to a kind of improved safety
Equipment.
Background technology
Crane is widely used in all trades and professions, is that mega project is constructed essential key equipment, load lifting limiter
It is a kind of safety precautions of crane.With the continuous development of construction industry, the horizontal continuous improvement of construction machineization,
Workmanship to tower crane and the horizontal requirement of its technical also more and more higher.Because lifting overload and caused by lifting security incident when
There is generation, it is the important guarantee for preventing such event from occurring that load lifting limiter is installed on hoisting machinery.
Conventional load lifting limiter includes two proving rings, an arm root for being fixed to tower crane of two proving rings
A pulley is fixedly mounted in portion, the other end of two proving rings, and the hoist rope of tower crane bypasses pulley, and one end of steel wire rope is fixed
Onto the lifting mechanism reel of tower crane, the other end fixes tower crane suspension hook.When tower crane hoisting heavy, steel wire rope will be by equal proportion
Pulling force, be the weight of detectable tower crane lift heavy by the value of thrust of measuring steel wire rope.In two proving rings, a proving ring is
Idle loop, for playing symmetrical counterweight effect, another proving ring is used for the pulling force size of measuring steel wire rope.After tower crane lift heavy, hang
The weight of weight can proportionally become pulling force on proving ring, and after proving ring tension, the dynamometry ring body of ring-type can produce up and down
The deformation that direction is drawn high, and the arc spring lamination that two panels is installed in opposite directions is fixed with the summit up and down of dynamometry ring body, in two panels arc
Limit switch is separately installed with shape shell fragment and is met and discussed, when in the presence of lift heavy, dynamometry ring body produces above-below direction and drawn high
During deformation, the relative distance of two panels arc spring lamination will diminish, by adjusting the relative distance met and discussed with limit switch, so that it may make certain
Some fixed lift heavy values triggering limit switches actions, the electric-control system of tower crane by detecting the on off operating mode of different limit switches,
Current lift heavy is may know that, and then takes different control strategies.
The limit switch installed on the arc spring lamination of the proving ring of existing load lifting limiter and meet and discuss, glued with AB glue
In proving ring body, because from different places, season is different, and the temperature difference is big, areal is early, also there are very big difference, the heat of metal in evening
Swollen shrinkage, the change of the deformation coefficient of material, the aging of glue come off.Influence the performance and used life of load lifting limiter.Such as
Chinese Patent Application No. is：201521122034.4 publication date is：The patent document on June 29th, 2016, disclose a kind of rise
Weight limitor, including becket and cover plate, becket inside are provided with load control device, and becket upper and lower side is provided with hanger,
Cover plate lid is open before and after becket and becket inside is sealed, and protecgulum is stretched in outside the regulation handle of load control device
Plate, front shroud pass through provided with corresponding through hole by regulation handle activity；The load control device includes upper lower mounting seat, on
Mounting seat is connected to the top of lower pull bar, and the bottom of lower pull bar is connected to the bottom of becket inner ring, and lower mounting seat is connected to
The bottom of pull bar, the top of upper connecting rod are connected to the top of becket inner ring, and upper mounting seat installation is provided with contact stem and adjustment portion
Part, the activity of contact stem are driven by regulating member, and the action of regulating member is driven by regulation handle, and lower mounting seat installation is provided with micro-
Dynamic switch, switch contact and the contact stem face of microswitch.In the program, before being stretched in outside the regulation handle of load control device
Cover plate, so avoiding the need for opening up through hole or screwed hole on the side ring wall of becket, so that the bulk strength of becket
Improve, reduce stress concentration, the uniform force of the left and right ring wall of becket, but its performance and used life could be improved.
The content of the invention
1st, to solve the problems, such as
For existing load lifting limiter modified is provided in the defects of performance and used life problem, the utility model
Safeguard protection crane gear, hoisting weight can be detected in real time, check weighing is accurate, stable performance, and long lifespan.In addition,
The utility model additionally provides detection control circuit, and the weight signal detected to device is shown, alarmed.
2nd, technical scheme
To solve the above problems, the utility model adopts the following technical scheme that.
A kind of improved safety protects crane gear, including reductor, reel, axle housing and weighing sensor；The reel
On be wound with steel wire rope, steel wire rope is provided with suspension hook by hanging wheel；One end drive connection of the reductor and reel；The volume
The one end of cylinder away from reductor is arranged in axle housing by bearing, and axle housing is supported by base；The weighing sensor is arranged on
Between axle housing and base.
As further improvement of the utility model, the weighing sensor is resistance strain type sensor.
As further improvement of the utility model, the weighing sensor is QCX type sensors.
As further improvement of the utility model, in addition to control circuit；The control circuit includes power supply, amplification
Device, comparator, PLC and audible-visual annunciator, weighing sensor, amplifier, comparator and PLC are sequentially connected with；
The power supply connection weighing sensor and comparator；The PLC controls audible-visual annunciator.
As further improvement of the utility model, the amplifier connects display.
As further improvement of the utility model, described PLC passes through Control reductor.
As further improvement of the utility model, described comparator has three, the fiducial values of three comparators according to
It is secondary to be set as 90%, 100% and the 130% of reference voltage rated value.
As further improvement of the utility model, the operating voltage of the power supply is 6V DC voltages.
As further improvement of the utility model, described amplifier, which is arranged on, to be fixed on weighing sensor side
In amplification case.
3rd, beneficial effect
Compared to prior art, the beneficial effects of the utility model are：
(1) the utility model improved safety protection crane gear, one end connection reductor of reel, the other end pass through bottom
Seat supports are arranged in axle housing, therefore reel both ends are stably supported, and lay winding wire ropes on reel, steel wire rope is installed by hanging wheel
There are suspension hook, reductor driving spool turns so that suspension hook is lifted by crane to object, and the device is provided between axle housing and base
Weighing sensor, suspension hook institute hanging object body weight is can detect, realize monitoring in real time；This kind of structure design, weighing sensor is not by season
Saving the extraneous factor change such as warm-natured degree influences, and check weighing is more accurate, stable performance, long lifespan；
(2) the utility model improved safety protection crane gear, weighing sensor is resistance strain type sensor, outside
Power effect is lower to produce mechanical deformation, makes resistance value occur to change accordingly therewith, in suspension hook lift heavy thing, weighing sensor is pressurized
The voltage signal proportional to load is produced, the conversion between weight and voltage signal is completed, preferentially selects QCX type sensors；
(3) the utility model improved safety protection crane gear, devises control circuit and device is controlled, power supply
Powered for weighing sensor and comparator, weight signal is converted into passing to amplifier after electric signal and put by weighing sensor
Greatly, on the one hand amplified signal passes to display, weight information is shown on a display screen, on the other hand by comparator with setting
After fixed benchmark rated voltage is compared, contrast signal is transferred to PLC and sent to be controlled audible-visual annunciator
Sound and light alarm signal, or the start and stop by Control reductor, realize intelligentized control method, ensure the security of lifting；
(4) the utility model improved safety protection crane gear, control circuit use three comparators, and fiducial value is successively
It is set as 90%, 100% and the 130% of reference voltage rated value, when load reaches 90%, PLC control acousto-optic report
Alert device sends alarm, and yellow indicator lamp is bright, but relay is failure to actuate, and reductor works on；When load reaches 100%, rise
Hang and reach rated weight, PLC control audible-visual annunciator sends alarm, and red led is bright, and reductor works on；When
When load reaches 130%, lifting overload, PLC control audible-visual annunciator sends alarm, and red led is bright, relay
Action, reductor circuit being cut off, reductor does not work, set by classifying alarm, operator is understood hoisting heavy situation, and
When handle, and there is overload protection function, operation is safer；
(5) the utility model improved safety protection crane gear, amplifier, which is arranged on, is fixed on weighing sensor side
On amplification case in, amplifier is protected, avoids clashing and breaking；
(6) the utility model improved safety protection crane gear, it is simple in construction, it is reasonable in design, it is easily fabricated.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram that the utility model improved safety protects crane gear；
Fig. 2 is the scheme of installation that the utility model improved safety protects weighing sensor in crane gear；
Fig. 3 is Fig. 2 sectional view；
Fig. 4 is the control principle block diagram that the utility model improved safety protects crane gear.
In figure：1st, reductor；2nd, reel；3rd, axle housing；4th, base；5th, weighing sensor；6th, steel wire rope；7th, suspension hook.
Embodiment
The utility model is further described below with reference to specific embodiments and the drawings.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of improved safety protection crane gear of the present embodiment offer, including reductor 1,
Reel 2, axle housing 3 and weighing sensor 5；Wherein, steel wire rope 6 is wound with the reel 2, steel wire rope 6 is provided with by hanging wheel
Suspension hook 7；One end of the reductor 1 and reel 2 is connected；Installed by bearing the described one end of reel 2 away from reductor 1
In axle housing 3, axle housing 3 is supported by base 4；The weighing sensor 5 is arranged between axle housing 3 and base 4.
In the present apparatus, one end connection reductor 1 of reel 2, the other end is arranged in axle housing 3 by the support of base 4, therefore
The both ends of reel 2 are stably supported, and lay winding wire ropes 6 on reel 2, steel wire rope 6 is provided with suspension hook 7 by hanging wheel, and reductor 1 drives
Reel 2 rotates so that suspension hook 7 lifts by crane to object, and the device is provided with weighing sensor between axle housing 3 and base 4
5,7 hanging object body weights of suspension hook are can detect, realize monitoring in real time；Such a structure design, weighing sensor 5 is not by seasonal temperature
Change influence Deng outside environmental elements, check weighing is more accurate, stable performance, long lifespan.
In the present embodiment, weighing sensor 5 is resistance strain type sensor, produces mechanical deformation under external force, makes
Resistance value occurs to change accordingly therewith, and in suspension hook lift heavy thing, weighing sensor 5, which is pressurized, produces the voltage proportional to load
Signal, the conversion between weight and voltage signal is completed, specifically selects QCX type sensors here.
Embodiment 2
The present embodiment provides a kind of improved safety protection crane gear, and electricity is controlled to equipment on the basis of embodiment 1
Road optimizes design.Specifically as shown in figure 4, control circuit includes power supply, amplifier, comparator, PLC, acousto-optic report
Alert device and display；Wherein, weighing sensor 5, amplifier, comparator and PLC are sequentially connected with, and power supply connects biography of weighing
Sensor 5 and comparator, PLC control audible-visual annunciator, amplifier are also connected with display.Also, PLC by after
Electrical equipment control reductor 1.Power supply is that weighing sensor 5 and comparator are powered, and weight signal is converted into telecommunications by weighing sensor 5
Amplifier is passed to after number to be amplified, on the one hand amplified signal passes to display, show weight information on a display screen,
On the other hand after being compared by comparator with the benchmark rated voltage set, contrast signal is transferred to PLC
It is controlled audible-visual annunciator and sends sound and light alarm signal, or the start and stop by Control reductor, realizes intelligent control
System, ensure the security of lifting.
What deserves to be explained is comparator has three in the control circuit of the present embodiment, the fiducial values of three comparators according to
It is secondary to be set as 90%, 100% and the 130% of reference voltage rated value.In use, when load reaches 90%, PLC controls
Device control audible-visual annunciator processed sends alarm, and yellow indicator lamp is bright, but relay is failure to actuate, and reductor works on；Work as load
When reaching 100%, lifting reaches rated weight, and PLC control audible-visual annunciator sends alarm, and red led is bright, subtracts
Fast machine 1 works on；When load reaches 130%, lifting overload, PLC control audible-visual annunciator sends alarm, red
Indicator lamp is bright, the actuating of relay, cuts off the circuit of reductor 1, and reductor 1 does not work.Such a mode is set by classifying alarm, is made
Operator understands hoisting heavy situation, timely processing, and has overload protection function, and operation is safer.
In addition, in the present embodiment, the operating voltage of power supply is 6V DC voltages；Amplifier, which is arranged on, is fixed on weighing and sensing
In amplification case on the side of device 5, amplifier is protected, avoids clashing and breaking.
Schematically the utility model and embodiments thereof are described above, this describes no restricted, accompanying drawing
Shown in be also one of embodiment of the present utility model, actual structure is not limited thereto.So if this area
Those of ordinary skill enlightened by it, do not depart from the utility model create objective in the case of, without creativeness design
The frame mode similar to the technical scheme and embodiment, the scope of protection of the utility model all should be belonged to.
Claims (9)
1. a kind of improved safety protects crane gear, including reductor (1) and reel (2)；Steel is wound with the reel (2)
Cord (6), steel wire rope (6) are provided with suspension hook (7) by hanging wheel；The reductor (1) and one end of reel (2) are connected,
It is characterized in that：Also include axle housing (3) and weighing sensor (5)；The one end of the reel (2) away from reductor (1) passes through axle
Hold in axle housing (3), axle housing (3) is supported by base (4)；The weighing sensor (5) is arranged on axle housing (3) and base
(4) between.
A kind of 2. improved safety protection crane gear according to claim 1, it is characterised in that：The weighing sensor
(5) it is resistance strain type sensor.
A kind of 3. improved safety protection crane gear according to claim 2, it is characterised in that：The weighing sensor
(5) it is QCX type sensors.
A kind of 4. improved safety protection crane gear according to claim 1 or 2 or 3, it is characterised in that：Also include control
Circuit processed；The control circuit includes power supply, amplifier, comparator, PLC and audible-visual annunciator, weighing sensor
(5), amplifier, comparator and PLC are sequentially connected with；The power supply connection weighing sensor (5) and comparator；It is described
PLC controls audible-visual annunciator.
A kind of 5. improved safety protection crane gear according to claim 4, it is characterised in that：The amplifier connection
Display.
A kind of 6. improved safety protection crane gear according to claim 4, it is characterised in that：Described PLC controls
Device passes through Control reductor (1).
A kind of 7. improved safety protection crane gear according to claim 4, it is characterised in that：Described comparison utensil
There are three, the fiducial value of three comparators is set as 90%, 100% and the 130% of reference voltage rated value successively.
A kind of 8. improved safety protection crane gear according to claim 4, it is characterised in that：The work of the power supply
Voltage is 6V DC voltages.
A kind of 9. improved safety protection crane gear according to claim 4, it is characterised in that：Described amplifier is set
Put in the amplification case being fixed on weighing sensor (5) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720353240.9U CN206624584U (en) | 2017-04-01 | 2017-04-01 | A kind of improved safety protects crane gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720353240.9U CN206624584U (en) | 2017-04-01 | 2017-04-01 | A kind of improved safety protects crane gear |
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| Publication Number | Publication Date |
|---|---|
| CN206624584U true CN206624584U (en) | 2017-11-10 |
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ID=60207229
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720353240.9U Active CN206624584U (en) | 2017-04-01 | 2017-04-01 | A kind of improved safety protects crane gear |
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| Country | Link |
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| CN (1) | CN206624584U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002231A (en) * | 2017-11-30 | 2018-05-08 | 无锡市汇鼎金属制管有限公司 | A kind of crane weighing device |
| CN108502761A (en) * | 2018-03-31 | 2018-09-07 | 江西中天机械有限公司 | A kind of boom hoisting of the derrick crane with overload self-unloading function |
-
2017
- 2017-04-01 CN CN201720353240.9U patent/CN206624584U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002231A (en) * | 2017-11-30 | 2018-05-08 | 无锡市汇鼎金属制管有限公司 | A kind of crane weighing device |
| CN108502761A (en) * | 2018-03-31 | 2018-09-07 | 江西中天机械有限公司 | A kind of boom hoisting of the derrick crane with overload self-unloading function |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 243000 Anhui city in Ma'anshan Province, Huashan district and Road No. 3 Patentee after: Eagle International Holdings Ltd. Address before: 243000 Anhui city in Ma'anshan Province, Huashan district and Road No. 3 Patentee before: Anhui Shanying Paper Industry Co., Ltd. |