CN114701960A - Method and device for automatically adjusting dynamic balance weight of tower crane - Google Patents
Method and device for automatically adjusting dynamic balance weight of tower crane Download PDFInfo
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- CN114701960A CN114701960A CN202210521078.2A CN202210521078A CN114701960A CN 114701960 A CN114701960 A CN 114701960A CN 202210521078 A CN202210521078 A CN 202210521078A CN 114701960 A CN114701960 A CN 114701960A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 217
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 33
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 239000000725 suspension Substances 0.000 claims description 13
- 238000000429 assembly Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
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- 239000002184 metal Substances 0.000 description 4
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- 238000009434 installation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
- B66C23/76—Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/06—Arrangements or use of warning devices
- B66C15/065—Arrangements or use of warning devices electrical
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Abstract
A method and a device for automatically adjusting the dynamic balance weight of a tower crane are provided, wherein a bidirectional inclination switch module is used for detecting the inclination angle of the tower crane and setting an upper threshold value and a lower threshold value, and when the inclination angle of the tower crane is between the upper threshold value and the lower threshold value, the bidirectional inclination switch module does not output a control signal; when the tower crane inclines forwards and the inclination angle of the tower crane reaches one threshold value, the bidirectional inclination switch module controls the front submersible pump to be started through the first relay, and water in the front water tank is conveyed to the rear water tank, so that the tower crane stops inclining forwards and is finely adjusted in the opposite direction; when the tower crane tilts backwards to reach another threshold value, the second relay controls the rear submersible pump to be started, water in the rear water tank is conveyed to the front water tank, and therefore the tower crane stops tilting backwards and fine-tunes in the opposite direction. According to the scheme, fluid such as water is used as a dynamic balance weight medium, and the water pump is started to pour water between the far water tank and the near water tank when the threshold value specified by the inclination angle switch is exceeded through the control circuit with the inclination angle switch, so that the purpose of dynamic balance of the whole tower crane is achieved.
Description
Technical Field
The invention relates to the technical field of mechanical automation, in particular to a method and a device for automatically adjusting a tower crane dynamic balance weight.
Background
The tower crane is a necessary engineering tool for constructing high-rise buildings. The tower crane mainly comprises a tower crane base, a tower body, a sleeve frame, a tower cap, a suspension arm, a pulley, a balance weight, a cab and accessories. At present, tower crane counterweights used in most projects are still fixed, and the tower crane counterweights are generally made of reinforced concrete and have the weight of 2-8 tons per tower crane. The working principle of the tower crane is that the tower crane continues to keep stable after lifting a heavy object by the balance function of the balancing weight and the toughness of the metal structure of the tower body. Generally, the balance arm is heavy, and the balance arm is inclined towards the suspension arm after a heavy object is lifted. Therefore, the weight cannot be increased or decreased. Therefore, the conditions that the experience of operators is insufficient, and the tower crane is turned over and broken due to the lifting of an overloaded heavy object sometimes occur. Therefore, if the tower crane counterweight can be dynamically passed through, the overall balance of the tower crane can be constantly kept, and the operation safety of the tower crane can be greatly improved.
Patent CN201220033470.4 discloses a portable liquid weight box to the weight box of filling liquid replaces traditional weight box, and the supplementary hydraulic pressure mechanism that can remove this weight box realizes the holistic back-and-forth movement of weight box, realizes the dynamic counter weight of tower crane.
Patent CN201611189941.X discloses a balance crane, which uses a liquid container filled with liquid as a counterweight, and uses a light sensor to control a hydraulic system to move the hydraulic container left and right to achieve the purpose of assisting the balance of the crane. Patent CN201922097338.4 proposes a counterweight device for electric tire crane, which is convenient to install, and uses a container filled with water as a counterweight to replace the traditional counterweight, so as to achieve the purpose of saving metal resources.
The two dynamic counterweights related to the method for integrally moving the weight box have more related elements, the dynamic weight box needs larger power, the safe and stable dynamic counterweight and overload alarm functions are not realized, and certain potential safety hazards are realized.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method and a device for automatically adjusting the dynamic balance weight of a tower crane.
The technical scheme adopted by the invention is as follows: a method for automatically adjusting the dynamic counterweight of a tower crane comprises the following steps:
detecting the inclination angle of the tower crane through a bidirectional inclination angle switch module, setting an upper threshold value and a lower threshold value, and when the inclination angle of the tower crane is between the upper threshold value and the lower threshold value, not outputting a control signal by the bidirectional inclination angle switch module;
when the tower crane inclines forwards and the inclination angle of the tower crane reaches one of the threshold values, the bidirectional inclination switch module outputs a control signal, controls the front submersible pump to start through the first relay, and conveys water in the front water tank to the rear water tank so that the tower crane stops inclining forwards and finely adjusts in the opposite direction until the inclination angle of the tower crane stops between the upper threshold value and the lower threshold value;
when the tower crane tilts backwards and the inclination angle of the tower crane reaches another threshold value, the bidirectional inclination switch module outputs a control signal, the second relay controls the rear submersible pump to be started, water in the rear water tank is conveyed to the front water tank, and therefore the tower crane stops tilting backwards and fine-tunes in the opposite direction.
As the preferred scheme, still be equipped with the level sensor who is used for detecting water level in preceding water tank and the back water tank, when preceding, back water tank arbitrary one reachd low water level, low level sensor switches on alarm circuit, sets up warning light and buzzer in the driver's cabin.
The device is arranged on a counterweight arm of the tower crane through a suspension component and comprises a front water tank and a rear water tank which are arranged at intervals, a front submersible pump and a front water tank counterweight which are arranged in the front water tank, a rear submersible pump and a rear water tank counterweight which are arranged in the rear water tank, a forward water injection pipe, a backward water injection pipe and a control circuit, wherein a water outlet port of the backward water injection pipe is communicated with the rear water tank, the water inlet end of the front submersible pump is connected with the front submersible pump, the water outlet end of the front submersible pump is communicated with the front water tank, the water inlet end of the tower crane is connected with a rear submersible pump, the control circuit comprises a first relay for controlling the front submersible pump, a second relay for controlling the rear submersible pump and a bidirectional inclination switch module for detecting the inclination angle of the tower crane, and the signal output end of the bidirectional dip angle switch module is connected with the first relay and the second relay.
As a preferred scheme, the bidirectional inclination angle switch module is arranged on a tower body or a tower cap of the tower crane and used for detecting the inclination angle of the tower crane in real time, the inclination angle of the tower crane towards one side is set to be a positive inclination angle, the inclination angle of the tower crane towards the reverse side is set to be a negative inclination angle, two threshold values of positive and negative are set in the bidirectional inclination angle switch module, when the inclination angle of the tower crane is between the upper and lower threshold values, the bidirectional inclination angle switch module does not output a control signal, when the inclination angle of the tower crane reaches the threshold value of the positive inclination angle, the first relay is controlled to be powered on, and the front submersible pump is started; and when the inclination angle of the tower crane reaches the threshold value of the negative inclination angle, controlling the second relay to be electrified, and starting the rear submersible pump.
As the preferred scheme, the upper ends of the front water tank and the rear water tank are respectively provided with a suspension assembly, and the suspension assemblies are hung on the counterweight arms.
Preferably, the rear water tank is arranged at the end far away from the counterweight arm, the capacity of the rear water tank is larger than that of the front water tank, and the weight of the counterweight of the rear water tank is larger than that of the counterweight of the front water tank.
Preferably, the control circuit further comprises an alarm circuit, and a water level sensor for detecting the water level in the front water tank and the water level in the rear water tank is arranged in the alarm circuit.
Preferably, the alarm circuit comprises a low water level sensor and an alarm which are arranged in the front water tank and the rear water tank, when any one of the front water tank and the rear water tank reaches a low water level, the low water level sensor conducts the alarm circuit, and an alarm lamp and a buzzer which are arranged in the cab give an alarm.
The invention has the beneficial effects that:
according to the scheme, fluid such as water is used as a dynamic balance medium, a front water tank, a rear water tank and an adjusting system are arranged at intervals, and a control circuit with an inclination switch is used for starting a water pump to pour water between a far water tank and a near water tank when a threshold value specified by the inclination switch is exceeded, so that the purpose of dynamic balance of the whole tower crane is achieved; the scheme also has the following technical effects:
by adopting the optimization scheme, the control circuit is adopted to automatically control the user, so that the aim of accurate control can be fulfilled; the method comprises the following specific steps: detecting the inclination angle of the tower crane through a bidirectional inclination angle switch module, setting an upper threshold value and a lower threshold value, and when the inclination angle of the tower crane is between the upper threshold value and the lower threshold value, not outputting a control signal by the bidirectional inclination angle switch module; when the tower crane inclines forwards and the inclination angle of the tower crane reaches one of the threshold values, the bidirectional inclination switch module outputs a control signal, controls the front submersible pump to start through the first relay, and conveys water in the front water tank to the rear water tank so that the tower crane stops inclining forwards and finely adjusts in the opposite direction until the inclination angle of the tower crane stops between the upper threshold value and the lower threshold value; otherwise, the second relay controls the rear submersible pump to start, and water in the rear water tank is conveyed to the front water tank, so that the tower crane stops inclining backwards and is finely adjusted in the opposite direction;
in this scheme, still be equipped with the level sensor who detects preceding water tank and the interior water level of back water tank, when current, arbitrary one of back water tank reachs low water level, low level sensor switches on alarm circuit, and warning lamp and the buzzer of setting in the driver's cabin report to the police, through setting up alarm device, can effectively improve the device's practicality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the conditioning system of FIG. 1;
FIG. 3 is a control flow diagram of the present invention.
Reference numerals are as follows: 1. the tower body, 2, a sleeve frame, 3, a tower cap, 4, a pulley arm, 5, a pulley, 6-1, a pulley arm stay wire, 6-2, a counterweight arm stay wire, 7, a front water tank, 71, a front water tank suspension seat, 8, a rear water tank, 81, a rear water tank suspension seat, 9, an adjusting system, 91, a rear submersible pump, 92, a front water injection pipe, 93, a front submersible pump, 94, a rear water injection pipe, 95, a rear water tank counterweight, 96, a front water tank counterweight, 10 and a counterweight arm.
Detailed Description
The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
It should be noted that: unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" and "an" or "the" and similar referents in the description and claims of the present invention are not to be construed as limiting in number, but rather as indicating the presence of at least one. The word "comprise" or "comprises", and the like, indicates that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, but does not exclude other elements or items having the same function.
The structure and operation of the present solution will be described in detail with reference to the accompanying drawings 1-3:
a method for automatically adjusting the dynamic counterweight of a tower crane comprises the following steps:
the method comprises the following steps that a bidirectional inclination angle switch module is arranged on a tower body 1 or a tower cap 3 of the tower crane, the inclination angle of the tower crane is detected through the bidirectional inclination angle switch module, an upper threshold value and a lower threshold value are set, and when the inclination angle of the tower crane is between the upper threshold value and the lower threshold value, the bidirectional inclination angle switch module does not output a control signal;
when the tower crane inclines forwards and the inclination angle of the tower crane reaches one of the threshold values, the bidirectional inclination switch module outputs a control signal, controls the front submersible pump to start through the first relay, and conveys water in the front water tank to the rear water tank so that the tower crane stops inclining forwards and finely adjusts in the opposite direction until the inclination angle of the tower crane stops between the upper threshold value and the lower threshold value;
when the tower crane tilts backwards and the inclination angle of the tower crane reaches another threshold value, the bidirectional inclination switch module outputs a control signal, the second relay controls the rear submersible pump to start, water in the rear water tank is conveyed to the front water tank, and therefore the tower crane stops tilting backwards and fine adjustment in the opposite direction until the inclination angle of the tower crane is between the upper threshold value and the lower threshold value.
The water level sensor is used for detecting the water level in the front water tank and the rear water tank, when any one of the front water tank and the rear water tank reaches a low water level, the low water level sensor conducts an alarm circuit, and an alarm lamp and a buzzer which are arranged in the cab give an alarm.
As shown in fig. 1, the structure of the tower crane in the specific implementation state of the present invention is schematically illustrated, wherein the tower crane includes a tower body 1, a jacket frame 2, a tower cap 3, a pulley arm 4, a pulley 5 disposed on the pulley arm 4, a counterweight arm 10, a front water tank 7 disposed on the counterweight arm 10, a rear water tank 8, and an adjusting system 9; wherein the front water tank and the rear water tank are arranged at intervals and are hung on the counterweight arm 10 through respective hanging components; as shown in fig. 2, the adjusting system 9 includes a front submersible pump 93 and a front water tank counterweight 96 arranged in the front water tank 7, a rear submersible pump 91 and a rear water tank counterweight 95 arranged in the rear water tank 8, a front water injection pipe 92, a rear water injection pipe 94 and a control circuit, the water outlet of the rear water injection pipe 94 is communicated with the rear water tank 8, the water inlet of the rear water tank is connected with the front submersible pump 93, the water outlet of the front water injection pipe 92 is communicated with the front water tank 7, the water inlet of the front water injection pipe is connected with the rear submersible pump 91, the control circuit includes a first relay for controlling the front submersible pump 93, a second relay for controlling the rear submersible pump 91 and a bidirectional inclination switch module for detecting an inclination angle of the tower crane, and the signal output end of the bidirectional inclination switch module is connected with the first relay and the second relay.
In the scheme, the bidirectional inclination angle switch module is arranged on a tower body or a tower cap of the tower crane and used for detecting the inclination angle of the tower crane in real time, the inclination angle of the tower crane towards one side is set to be a positive inclination angle, the inclination angle of the tower crane towards the opposite side is set to be a negative inclination angle, two threshold values of positive and negative are set in the bidirectional inclination angle switch module, when the inclination angle of the tower crane is between the upper threshold value and the lower threshold value, the bidirectional inclination angle switch module does not output a control signal, when the inclination angle of the tower crane reaches the threshold value of the positive inclination angle, the first relay is controlled to be powered on, and the front submersible pump is started; and when the inclination angle of the tower crane reaches the threshold value of the negative inclination angle, controlling the second relay to be electrified, and starting the rear submersible pump.
It should be noted that: although the front water tank, the rear water tank and the like are used as part names in the scheme, the counterweight medium is not limited, and other liquid can be used as the counterweight medium, so that the same technical effect can be realized.
In the scheme, the front water tank 7 can be made of metal, is provided with a front water tank hanging seat 71, is hung on the counterweight arm 10 through the front water tank hanging seat 71 and is hung on one side close to the tower body; and a front water tank counterweight is also arranged in the front water tank 7 and used for lifting the weight of the front water tank. And provides working space for the front submersible pump.
The front submersible pump can inject water into the rear water tank through a rear water injection pipe connected with the front submersible pump;
the rear water tank 8 is made of available metal, is provided with a rear water tank suspension seat 81, is hung on the counterweight arm 10 through the rear water tank suspension seat 81, is hung on one side far away from the tower body, and is also internally provided with a rear water tank counterweight for lifting the weight of the rear water tank and providing an operation space for the rear submersible pump.
Because the current structural configuration of tower crane itself, back water tank can show more than what preceding water tank was done to increase back water tank counter weight as appropriate, that is to say: the capacity of the rear water tank needs to be larger than that of the front water tank, and the weight of the counterweight of the rear water tank is larger than that of the counterweight of the front water tank.
The rear submersible pump is connected with a forward water injection pipe to pour water into the forward water tank.
In the scheme, the control circuit is also provided with an alarm circuit which mainly comprises a low water level sensor and an alarm which are arranged on the front water tank and the rear water tank, when any one of the front water tank and the rear water tank reaches the low water level, the low water level sensor switches on the alarm circuit, an alarm lamp and a buzzer in a cab are reminded, and a main power supply of the dip angle switch is cut off simultaneously, so that the water pump stops operating.
The control flow of the invention is as follows:
and turning on the switch, and powering on the low water level alarm system and the main power supply of the bidirectional inclination switch. And if the inclination angle of the tower crane is between the upper threshold value and the lower threshold value at the moment, the whole adjusting system has no action.
When a heavy object is hoisted, the pulley arm is under the action of tension, the whole pulley arm tilts downwards and lowers, when a certain threshold value is reached, the forward tilting switch is started, the first relay is electrified, the front submersible pump works, and water in the front water tank is conveyed to the rear water tank; the conveying process gradually reduces the inclination angle, when the inclination angle is lower than a forward inclination threshold value, the front submersible pump stops working, and the heavy object is gradually hoisted;
along with the parallel translation of heavy object on the coaster arm, the inclination of coaster arm is also along with the change, triggers two-way inclination switch simultaneously or inclines forward and opens, or hypsokinesis is to open to this scheme utilizes the round trip transport water of preceding, back water tank to realize the dynamic counter weight balance of tower crane.
When a certain water tank reaches a low water level, the warning system gives an alarm, a certain margin is left in the set operation space, and the operation is stopped, so that the system is ensured not to have accidents.
Examples 1,
Based on the new standard, the verticality error of the tower body allowed by the tower crane in no load is not more than 0.3% of the independent installation height of the section of the tower body, and is stricter than 0.4% of the requirement of the old standard. But still rely on load lifting limiter, moment limiter, height limiter, change width of cloth stopper and gyration stopper to realize the safe work of tower crane, and in fact because there is tower crane installation error, sensor installation nonstandard, change width of cloth steel wire elasticity adjustment and be inconsistent, factor such as artifical modification sensor threshold value parameter still can't eliminate the potential safety hazard of tower crane operation.
Therefore, according to actual measurement data on the TC5013, when the free height is 40m, the maximum lifting capacity is 6 tons, the maximum amplitude lifting capacity is 2.3 tons, the lifting moment is 1150kN · m, the length of the balance arm is 11.88m, the balance weight is 5 pieces, 4 pieces, 3.1 tons, 1 piece, 3.7 tons, and the total balance weight is 16.1 tons. When the tower is unloaded, the difference between the bending moment generated by the balance arm to the tower body and the bending moment generated by the power arm to the tower body is-20 t.m, and the change of the inclination angle of the tower body is close to 0.3 percent.
Before the modification, the tower crane is provided with a moment protection device. When the lifting moment reaches 80% of the rated value, the S7-3 travel switch is actuated, and the amplitude variation trolley can only move slowly. When the lifting torque reaches 90% of the rated value, the S7-4 travel switch acts, the buzzer sends out intermittent early warning sound, when the lifting torque exceeds the rated value and reaches 105% of the rated value, the S7-1, (S7-2) and the KA5 act, the actions of the winch in the ascending direction and the outward direction of the amplitude-variable trolley are stopped, the buzzer sends out long-sounding alarm, the H5 indicator lamp is turned on, at the moment, the trolley can move inwards in amplitude to reduce the lifting torque, and then the winch is driven.
After the repacking, adopt 4 steel balance tank, every water tank dead weight is about 2 tons, and 2 are the water storage box, install nearly body of the tower department, and 2 are balance tank, install in former balanced heavy weight position. The total weight of the water storage tank is 20 tons after the water storage tank is filled with water. When the tower crane works to the limit load, the water in the water storage tank is pumped to the balance water tank by the water pump, and the balance moment which can be provided by about 1600 kN.m before the tower crane is modified is improved to 2000 kN.m. And the change quantity of the perpendicularity of the tower body is reduced to 0.2 percent from the original 0.3 percent which is nearly the limit, so that the safety of the tower crane operation is greatly improved. When the tower crane unloads the hanging object and reaches the no-load state, the balance moment of the counterweight arm is reduced to 900 kN.m from 1600 kN.m before modification, so that the original variation of the counterweight arm to the verticality of the tower body is reduced to 0.16% by approaching 0.3%. The safety of the tower crane is greatly improved when the tower crane stops working in windy days.
In this example, the dip switch is arranged on a vertical plate of the tower cap, the threshold value of the dip switch is-4-2 degrees, namely when the tower body tilts 4 degrees when the heavy object is lifted, the actual measurement shows that the verticality of the tower body is 0.2 percent, the submerged pump is corrected after starting, when the heavy object is lifted, the set dip threshold value is smaller due to the impact load factor of suddenly lifting the heavy object, so that the forward submerged pump can work more quickly, and the leveling is reducedThe weight of the weight is balanced. The response time is about 0.655s from the turn-on of the tilt switch to the operation of the submersible pump. In order to ensure that the water filling balance operation achieves better response speed, a submersible pump with higher power needs to be selected. The parameters of the QW150-200-10-15 type submersible pump selected in the embodiment are as follows: flow rate of 200m3H, the lift is 10m, and the motor power is 15 kw. The ideal experiment effect is achieved.
It should be noted that while the invention has been described in terms of the above-mentioned embodiments, other embodiments are also possible. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications be covered by the appended claims and their equivalents.
Claims (8)
1. A method for automatically adjusting the dynamic counterweight of a tower crane is characterized in that: the method comprises the following steps:
detecting the inclination angle of the tower crane through a bidirectional inclination angle switch module, setting an upper threshold value and a lower threshold value, and when the inclination angle of the tower crane is between the upper threshold value and the lower threshold value, not outputting a control signal by the bidirectional inclination angle switch module;
when the tower crane inclines forwards and the inclination angle of the tower crane reaches one of the threshold values, the bidirectional inclination switch module outputs a control signal, controls the front submersible pump to start through the first relay, and conveys water in the front water tank to the rear water tank so that the tower crane stops inclining forwards and finely adjusts in the opposite direction until the inclination angle of the tower crane stops between the upper threshold value and the lower threshold value;
when the tower crane tilts backwards and the inclination angle of the tower crane reaches another threshold value, the bidirectional inclination switch module outputs a control signal, the second relay controls the rear submersible pump to be started, water in the rear water tank is conveyed to the front water tank, and therefore the tower crane stops tilting backwards and fine-tunes in the opposite direction.
2. The method for automatically adjusting the dynamic counterweight of the tower crane according to claim 1, characterized in that: the water level sensor is used for detecting the water level in the front water tank and the rear water tank, when any one of the front water tank and the rear water tank reaches a low water level, the low water level sensor conducts an alarm circuit, and an alarm lamp and a buzzer which are arranged in the cab give an alarm.
3. Apparatus for use in a method according to claim 1 or claim 2, the apparatus being mounted on a counterweight arm of a tower crane by means of a suspension assembly, wherein: preceding water tank and back water tank, the preceding immersible pump in the water tank before setting up and preceding water tank counter weight, set up back immersible pump and back water tank counter weight in the water tank before the interval sets up, preceding water injection pipe, backward water injection pipe and control circuit, the play water port intercommunication of backward water injection pipe back water tank, preceding immersible pump is connected to its water inlet end, the play water port intercommunication to the water injection pipe preceding water tank, its water inlet end are connected the back immersible pump, control circuit is including the first relay that is used for controlling preceding immersible pump, the second relay that is used for controlling the back immersible pump and be used for detecting the two-way inclination switch module at tower crane inclination, the signal output part of two-way inclination switch module connects first relay and second relay.
4. Apparatus for use in the method according to claim 3, characterised in that: the bidirectional inclination angle switch module is arranged on a tower body or a tower cap of the tower crane and used for detecting the inclination angle of the tower crane in real time, the inclination angle of the tower crane towards one side is set to be a positive inclination angle, the inclination angle of the tower crane towards the opposite side is set to be a negative inclination angle, two threshold values of positive and negative are set in the bidirectional inclination angle switch module, when the inclination angle of the tower crane is between the upper threshold value and the lower threshold value, the bidirectional inclination angle switch module does not output a control signal, when the inclination angle of the tower crane reaches the threshold value of the positive inclination angle, the first relay is controlled to be powered on, and the front submersible pump is started; and when the inclination angle of the tower crane reaches the threshold value of the negative inclination angle, controlling the second relay to be electrified, and starting the rear submersible pump.
5. Apparatus for use in the method according to claim 3, characterised in that: and the upper ends of the front water tank and the rear water tank are respectively provided with a suspension assembly, and the suspension assemblies are hung on the counterweight arms through the respective suspension assemblies.
6. Apparatus for use in a method according to claim 3, wherein: the rear water tank is arranged at the far end of the counterweight arm, the capacity of the rear water tank is larger than that of the front water tank, and the weight of the counterweight of the rear water tank is larger than that of the counterweight of the front water tank.
7. Apparatus for use in the method according to claim 3, characterised in that: the control circuit also comprises an alarm circuit, and a water level sensor for detecting the water level in the front water tank and the rear water tank is arranged in the alarm circuit.
8. Apparatus for use in the method according to claim 3, characterised in that: the alarm circuit is composed of a low water level sensor and an alarm which are arranged in the front water tank and the rear water tank, when any one of the front water tank and the rear water tank reaches the low water level, the low water level sensor switches on the alarm circuit, and an alarm lamp and a buzzer which are arranged in the cab give an alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210521078.2A CN114701960A (en) | 2022-05-13 | 2022-05-13 | Method and device for automatically adjusting dynamic balance weight of tower crane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210521078.2A CN114701960A (en) | 2022-05-13 | 2022-05-13 | Method and device for automatically adjusting dynamic balance weight of tower crane |
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| CN114701960A true CN114701960A (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210521078.2A Pending CN114701960A (en) | 2022-05-13 | 2022-05-13 | Method and device for automatically adjusting dynamic balance weight of tower crane |
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| CN (1) | CN114701960A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116345355A (en) * | 2023-05-29 | 2023-06-27 | 国网山东省电力公司肥城市供电公司 | Cable installation equipment with tension adjusting function |
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| SU1323522A1 (en) * | 1986-03-24 | 1987-07-15 | Государственный проектно-конструкторский институт технологии монтажа промышленного оборудования | Tower crane |
| CN101723255A (en) * | 2008-10-14 | 2010-06-09 | 魏为亚 | Hydraulic balance tower crane |
| CN106744361A (en) * | 2016-12-23 | 2017-05-31 | 深圳市福田区青少年科技教育协会 | One kind automatically adjusts head mast device |
| CN206345620U (en) * | 2016-12-23 | 2017-07-21 | 深圳市福田区青少年科技教育协会 | A kind of safe head mast device |
| CN208200203U (en) * | 2018-03-30 | 2018-12-07 | 黄河科技学院 | A kind of adjustable derrick crane of counterweight |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1323522A1 (en) * | 1986-03-24 | 1987-07-15 | Государственный проектно-конструкторский институт технологии монтажа промышленного оборудования | Tower crane |
| CN101723255A (en) * | 2008-10-14 | 2010-06-09 | 魏为亚 | Hydraulic balance tower crane |
| CN106744361A (en) * | 2016-12-23 | 2017-05-31 | 深圳市福田区青少年科技教育协会 | One kind automatically adjusts head mast device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116345355A (en) * | 2023-05-29 | 2023-06-27 | 国网山东省电力公司肥城市供电公司 | Cable installation equipment with tension adjusting function |
| CN116345355B (en) * | 2023-05-29 | 2023-08-22 | 国网山东省电力公司肥城市供电公司 | Auxiliary assembly of cable tension installation |
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