CN111573504A - Unit hoist and mount and lift and hang in coordination hoist device and mobile crane - Google Patents

Abstract

The utility model provides a unit hoist and mount and lift hoist device, characterized by (1) installs detection lifting hook declination device: hanging a crane fixed pulley assembly a1 on a lifting lug b2 of a lifting arm b1 through a connecting piece a3, wherein one end of the connecting piece a3 is connected with the fixed pulley assembly a1 through a hinge shaft a2, the hinge shaft a2 is arranged in a vertical direction to the axis of the fixed pulley, and the other end of the connecting piece a3 is hung on a lifting lug b2 of the lifting arm b1 through a shackle a 5; a platform surface a6 perpendicular to a force action line of a pulley block is fixedly arranged on the connecting piece a3, an angle measuring instrument a7 is arranged on the platform surface a6, and the detected real-time component is synthesized along the axial direction X, Y and is equal to a real-time hook deflection angle; (2) installing a lifting hook deflection angle wireless transmission device; (3) installing a hoisting load detector; (4) and installing a wireless transmission device for the hoisting load. The device is used for the mobile crane to monitor the single machine hoisting and the lifting and hoisting cooperation hoisting.

Description

Unit hoist and mount and lift and hang in coordination hoist device and mobile crane

Technical Field

The invention discloses a single-machine hoisting and lifting device, belongs to the technical field of cranes, and further relates to a mobile crane comprising the single-machine hoisting and lifting device.

Background

According to the SH/3515-2003 large-scale equipment hoisting engineering construction process standard 9.1.4, the crane hoisting process is required to meet the requirement that in the hoisting process, the deflection angle of a lifting hook is less than 3 degrees, and according to the latest SH/T3515-2017 petrochemical large-scale equipment hoisting engineering construction technical specification 11.1.4, in the hoisting process, the crane with the deflection angle of the lifting hook being less than 1 degree has a series of functions of lifting, rotating, amplitude changing, arm stretching and retracting, walking and the like, and is required to be carried out when the deflection angle of the lifting hook is less than an allowable value in the hoisting process according to the specification. According to the fact that a crane appears in 1883 in the west, a high-speed road multi-level crane capable of crossing the country has been developed, however, the development of the crane serving as hoisting process equipment is relatively slow in the aspect of hoisting, so far, a crane driver cannot know whether a crane pulley block (shown in figure 1) in hoisting is in a vertical state or not, particularly in large-scale hoisting, the crane driver needs to grasp the crane pulley block by naked eyes and years of experience of a hoisting commander, and the crane driver adjusts the vertical state of the pulley block to complete hoisting operation.

Disclosure of Invention

The invention aims to provide a single-machine hoisting and lifting hoisting device, and further aims to provide a mobile crane comprising the single-machine hoisting and lifting hoisting device.

The single machine hoisting and the lifting are both basic operation of the mobile crane or the engineering crane hoisting, and the number of independent hoisting points with definite stress can only be less than or equal to 3, so the lifting is generally double-machine or three-machine lifting, according to the hoisting mathematical model (Linhanding. mathematical model of hoisting and hoisting stress control [ J ], academy of building engineering of Nanjing, 1996(4) 72-77), the danger of lifting comes from that the deflection angle of the hoisting hook in the hoisting is not monitored, and the load of the crane is changed excessively (exceeds the hoisting design value), when the position of the two hoisting points of the double-machine lifting is determined, the load of the two hoisting points in the hoisting is changed excessively, and only the slope of the connecting line of the two hoisting points deviates from the design value, so the hoisting load between the lifting cranes can be compared to operate the crane, the normal distribution of the hoisting load of the double-machine of the lifting is realized, and a hoisting hook deflection angle and hoisting load detection and transmission device is, the method overcomes the danger of single machine hoisting and lifting hoisting, and has universal applicability to double-machine or three-machine lifting with single machine hoisting and definite stress.

When the lifting load between the cranes is controlled to change or the deflection angle of the lifting hook between the cranes is controlled to change, the cranes are mutually cooperative, and when the deflection angle of the lifting hook between the main machine and the auxiliary machine is controlled to change, the main machine and the auxiliary machine are mutually cooperative.

The size of the hook deflection angle generated between the main machine and the auxiliary machine is approximately in inverse proportion to the respective hoisting loads borne by the main machine and the auxiliary machine, so that the hook deflection angle displayed by the auxiliary machine is not more than an allowable value for operating the crane to hoist. When the main machine and the auxiliary machine are hoisted, the auxiliary machine bears all hoisting weight and is unhooked by the main machine, so that only the deflection angles of the hoisting hooks in the hoisting of the main machine and the auxiliary machine are monitored, and the change of the hoisting weight load in the hoisting is not monitored.

At present, a hoisting commander commands a crane driver to operate according to information provided by a person monitoring the posture change of a hoisted object when large-scale hoisting or hoisting is carried out, and a special person is arranged to monitor the posture change of the hoisted object, so that the crane is effectively provided with a device for displaying the deflection angle of the lifting hook in real time for hoisting of a mobile crane so as to monitor the deflection angle of the lifting hook in hoisting of the crane, and for the crane needing to control the distribution of the hoisting load, the normal distribution of the hoisting load is realized by comparing the hoisting load among hosts with the crane for controlling the crane.

A single machine hoisting and lifting hoisting device (shown in figures 2 and 3), which is characterized in that,

(1) installing a device for detecting the deflection angle of the lifting hook:

(fig. 4 and 6) hanging crane fixed pulley assembly a1 on lifting lug b2 of boom b1 through connecting piece a3, wherein one end of connecting piece a3 is connected with fixed pulley assembly a1 through hinge shaft a2, and hinge shaft a2 is arranged in a vertical direction to the axis of the fixed pulley, and the other end of connecting piece a3 is hung on lifting lug b2 of boom b1 through shackle a 5; a platform surface a6 perpendicular to a force action line of a pulley block is fixedly arranged on the connecting piece a3, an angle measuring instrument a7 is arranged on the platform surface a6, and the detected real-time component is synthesized along the axial direction X, Y and is equal to a real-time hook deflection angle;

the lifting lug b2 hung on the boom b1 through the connector a3 is provided at a fixed pulley of a boom, arm support or the like of the existing crane, and the crane fixed pulley assembly is hung on the lifting lug through the limited connector.

(2) Installing a lifting hook deflection angle wireless transmission device: a set of device for remotely switching two channels and a remote switch which is arranged in a crane operation room and wirelessly transmits a signal of the measured hook deflection angle, and a set of receiving control device for receiving and displaying the hook deflection angle and switching two channels are arranged on the connector a3 or the fixed pulley guard plate of the crane;

switching channels to display real-time hook deflection angles of the two cooperative lifting and hoisting parties: when the cranes select to lift, each crane starts the hook deflection angle wireless transmitting device through a remote control switch arranged in a crane operating room respectively, and each crane occupies one channel; the receiving control devices arranged in the crane operation room respectively remove one set of receiving control devices and switch to the local machine channel, the real-time hook deflection angle of the local machine is displayed outside the local machine operation room, meanwhile, the hook deflection angle receiving control device of the receiving cooperative party is switched to the cooperative party crane channel, and the real-time hook deflection angle of the cooperative party is displayed in the local machine operation room.

(3) Installing a hoisting load detector: a hoisting load detector is arranged on the crane;

(4) installing a wireless transmission device for the hoisting load: a set of device for remotely switching two channels and a remote switch arranged in a crane operation room and wirelessly transmitting a measured hoisting load signal, and a set of load receiving control device of the crane and a set of load receiving control device of a cooperative party for switching two channels, which are matched with the crane operation room and are used for switching the two channels;

switching channels to display real-time hoisting loads of the hoisting parties: when the cranes select to lift, each crane starts a hoisting load wireless transmitting device through a remote control switch arranged in a crane operating room, and each crane occupies one frequency channel; the receiving control devices arranged in the crane operation chambers respectively remove one set of the receiving control devices and switch to the local channel, real-time hoisting loads are displayed outside the local operation chambers, meanwhile, the load receiving control devices of the receiving cooperative parties are switched to the crane channels of the cooperative parties, and the real-time hoisting loads are displayed in the local operation chambers.

The single-machine hoisting and lifting hoisting device is characterized in that when the single machine is hoisted, the single-machine hook deflection angle wireless transmitting device is started to occupy one channel through a remote switch arranged in an operation chamber of a crane, and only the hook deflection angle receiving control device for receiving the single-machine channel is started; or the real-time hook deflection angle is displayed in the single machine operation room through bus transmission.

The single machine hoisting and lifting hoisting device is characterized in that the hoisted object is centrally and vertically hoisted according to the single machine real-time lifting hook deflection angle, and the deflection angle of the lifting hook in the single machine hoisting is monitored not to exceed an allowable value.

The single machine hoisting and lifting hoisting device is characterized in that a set of three-channel remote control switching wireless transmitting device with a remote switch arranged in a crane operation chamber and used for transmitting a measured hook deflection angle signal and three sets of three-channel switching receiving and displaying hook deflection angle receiving control devices matched with the crane operation chamber are arranged on the connecting piece a3 or the fixed pulley guard plate;

the single machine hoisting and lifting hoisting device is characterized in that a set of three-channel remote control switching remote control switch is arranged on a crane optionally, a wireless transmitting device for transmitting a measured hoisting load signal is arranged in a crane operating room, and three sets of three-channel switching receiving and displaying hoisting load receiving control devices are arranged in the crane operating room;

the single machine hoisting and lifting hoisting device is characterized in that,

firstly, double-host lifting, namely, vertically and centrally lifting a lifted object according to the real-time hook deflection angle of the host, and monitoring that the hook deflection angle does not exceed an allowable value in single-host lifting; meanwhile, normal load distribution is realized by comparing the hoisting load among the main machines and operating the crane.

Secondly, the main machine and the auxiliary machine are lifted and hoisted by the double machines, and the main machine and the auxiliary machine are operated to hoist by using the condition that the deflection angle of the lifting hook displayed by the auxiliary machine is not more than an allowable value.

The content as the core of the scheme is analyzed as follows: fig. 4 and 6 show that a crane fixed pulley assembly a1 is hung on a lifting lug b2 of a boom b1 through a connecting piece a3, one end of the connecting piece a3 is connected with the fixed pulley assembly a1 through a hinge shaft a2, the hinge shaft a2 is arranged in a vertical direction to the axis of the fixed pulley, and the other end of the connecting piece a3 is hung on the lifting lug b2 of the boom through a shackle a 5; therefore, when the pulley block force application point acting on the fixed pulley axis is inclined, the fixed pulley assembly a1 is automatically adjusted along the hinge shaft a2 under the action of the pulley block hanging weight tension, the fixed pulley axis is slightly inclined, and the pulley block force application line is always vertical to the platform surface a6 when the pulley block force application line is hung weight when a platform which is vertical to the platform surface a6 is fixedly arranged on the connecting piece a3 because the pulley block force application line passes through the connecting piece a 3.

Because when hanging heavy the assembly pulley effort line perpendicular to all the time the platform face, work as the connector the fixed angle measuring apparatu of installing on the platform face, the contained angle between the perpendicular platform face of detected and assembly pulley effort line and horizontal plane, is equal to numerically the real-time lifting hook declination of the skew plumb line angle of assembly pulley effort line.

As shown in fig. 7, let the intersection angle between the b point passing through the pulley block force line m and the plumb line n passing through the b point be ≥ b, the included angle between the platform plane W (i.e. a6 in fig. 4) perpendicular to the pulley block force line m and the Z horizontal plane be ≤ a, the vertical legs of the perpendicular line from the b point in the dihedral angle to the W, Z dihedral plane are C, D, and the a point from the C point in the plane where Ca is perpendicular to the intersection line L of the W plane and the Z plane is made, and Da ≤ Ca, L ≤ bC are connected,

l < T > face bCa, < T > ba, also < T > bD, < T > face bDa, < T > Da,

the angle CaD is a plane angle of a dihedral angle, the quadrangle aCbD is coplanar with m and n straight lines, and the angle C = D =90 DEG

So < a (complementary to < CbD) is equal to the acute angle < b where the m-line intersects the n-line.

The above shows that: real-time the angle of the skew plumb line of assembly pulley effort line equals in real time with contained angle between the perpendicular platform face of assembly pulley effort line and the horizontal plane, real-time the position perpendicular to of the skew plumb line of assembly pulley effort line the platform face intersects with the horizontal plane, just the angle of the skew plumb line of real-time assembly pulley effort line, with contained angle is located the coplanar between the perpendicular platform face of real-time and assembly pulley effort line and the horizontal plane.

An angle gauge may thus be provided on the platform surface a6 to detect the real-time hook deflection angle of the pulley block force line from the plumb line angle.

The single-machine hoisting and lifting hoisting device and the mobile crane have the beneficial effects that:

the combined technical characteristics generate a synergistic effect, so that the precise hook deflection angle can be displayed, wired or wireless transmission including a bus can be selected to monitor the single machine real-time hook deflection angle, and the synergistic lifting can be realized.

Drawings

FIG. 1 is a schematic view of a pulley block structure;

in FIG. 1, the reference numbers: the crane comprises an A5 suspension arm, an A1 fixed pulley, an A2 movable pulley, an A3 steel wire rope and an A4 hook;

FIG. 2 is a hook declination cooperator block diagram;

FIG. 3 is a block diagram of a hoist load coordination party;

FIG. 4 is an explanatory view showing a deflection angle structure of the hook;

the numbers in fig. 4: a1 fixed pulley assembly, a2 hinge shaft, a3 link, a4 shackle 1, a5 shackle 2, a6 platform face, a7 angle gauge or inertial gauge;

FIG. 5 is a schematic diagram of a left side sectional structure of the embodiment of FIG. 4

FIG. 6 is a schematic view of a lifting lug of the crane boom;

reference numbers in fig. 6: b1 davit b2 shackle;

fig. 7 is an explanatory view of detection of a hook deflection angle from a pulley block force action line.

Detailed Description

Unit hoist and mount lifting hook declination detects

As shown in fig. 4, a crane fixed pulley assembly a1 is hung on a lifting lug b2 of a boom b1 through a connecting piece a3, one end of the connecting piece a3 is connected with the fixed pulley assembly a1 through a hinge shaft a2, the hinge shaft a2 is arranged in a vertical direction to the axis of the fixed pulley, and the other end of the connecting piece a3 is hung on the lifting lug b2 of the boom through a shackle a 5; therefore, when the pulley block force application point acting on the axis of the fixed pulley deviates angle, the fixed pulley assembly a1 is automatically adjusted along the hinge shaft a2 under the action of the pulley block hanging weight tension, the axis of the fixed pulley is slightly inclined, and the pulley block force application line is always vertical to the platform surface a6 when the pulley block force application line is hung weight because the pulley block force application line passes through the connecting piece a3 and a platform which is vertical to the platform surface a6 is fixedly arranged on the connecting piece a 3.

Therefore, the correct detection of the deflection posture and the like of the hook can be carried out through the platform surface a6, and the force action line of the pulley block is always vertical to the platform surface a6 during the hoisting; when the angle measuring instrument a7 is fixedly arranged on the platform surface a6 of the connecting piece a3, the detected included angle between the vertical platform surface of the force line of the pulley block and the horizontal plane is equal to the real-time hook deflection angle.

Real-time hook deflection angle detected by double-shaft dynamic inclinometer

A BWD-VG500 dynamic measurement inclinometer (X, Y shaft dynamic accuracy is 0.1 degree) of north micro sensing (WWW. angle. com. cn) is selected, and is arranged on the connecting piece a3 and the vertical platform surface a6 of the pulley block force action line, and transmits the detected real-time X, Y axial component wirelessly or through a bus, and the singlechip microcomputer calculates the real-time X, Y axial component synthetic value according to the real-time hook deflection angle value, meanwhile, the force action line of the pulley block is vertical to the intersection line of the platform surface and the horizontal plane according to the real-time direction of the deviation of the force action line of the pulley block from the plumb line, and the angle of the real-time pulley block force action line deviating from the plumb line and the included angle between the real-time pulley block force action line vertical platform surface a6 and the horizontal plane are positioned on the same plane, and according to the polarity of the real-time X, Y axial component, through the matched display screen in the prior art, the real-time numerical value and the direction of the deflection angle of the lifting hook are accurately displayed in the crane operation room.

And (4) hoisting the hoisted object in a centering way according to the displayed real-time deflection angle of the lifting hook, and monitoring that the deflection angle of the lifting hook of the crane is smaller than an allowable value in hoisting according to the real-time deflection angle of the lifting hook.

Due to the fact that the real-time hook deflection angle can be accurately displayed, the equipment is advanced and flexible to control, and the crane with the pilot type handle is adopted, when the real-time hook deflection angle is additionally displayed for the crane, a driver of the crane can achieve vertical lifting for eliminating the hook deflection angle (the hook deflection angle is 0 degrees) according to the matched operation of the driver, and the crane hook deflection angle in lifting is monitored to be smaller than an allowable value.

A suspended load detector is provided with a backing ring type weighing sensor.

Firstly, a purpose-made backing ring type weighing sensor is arranged between a fixing nut at the end part of a hook head of a lifting hook and a connecting beam, the sizes of guard plates at two sides of a movable pulley of a lifting pulley block of a crane are respectively increased by 30 centimeters, so that the distance between the pulley and the hook head of the lifting hook is enlarged, and therefore a set of wireless transmitting device which is provided with two channels for remote control switching and a remote control switch and outputs signals of the backing ring type weighing sensor is arranged in a local operating room.

Secondly, a set of local load receiving control device for switching two channels and a set of cooperative load receiving control device for switching two channels are arranged in the crane operation room in a matching way.

The cushion ring type weighing sensor converts the hanging weight of an object into an analog voltage signal, converts the analog voltage signal into a corresponding digital signal through the data acquisition board, amplification, filtering and A/D conversion, transmits the digital signal to the data processing board through wireless data transmission, and displays the digital signal on a screen.

In order to improve the comparability of the real-time local load and the cooperative load, the same hoisting load detector is arranged on both the crane and the cooperative crane.

The single-machine hoisting and lifting hoisting device is characterized in that the same type of hoisting load detectors are arranged on the crane and the cooperative square crane.

It should be noted that the above-mentioned embodiments of the present invention are examples only, and that several modifications and decorations made by those skilled in the art should be considered as the protection scope of the present invention.

Claims (6)

1. The utility model provides a unit hoist and mount and lift hoist device for hoist, characterized by:

(1) installing a device for detecting the deflection angle of the lifting hook:

hanging a crane fixed pulley assembly a1 on a lifting lug b2 of a lifting arm b1 through a connecting piece a3, wherein one end of the connecting piece a3 is connected with the fixed pulley assembly a1 through a hinge shaft a2, the hinge shaft a2 is arranged in a vertical direction to the axis of the fixed pulley, and the other end of the connecting piece a3 is hung on a lifting lug b2 of the lifting arm b1 through a shackle a 5; a platform surface a6 perpendicular to a force action line of a pulley block is fixedly arranged on the connecting piece a3, an angle measuring instrument a7 is arranged on the platform surface a6, and the detected real-time component is synthesized along the axial direction X, Y and is equal to a real-time hook deflection angle;

(2) installing a lifting hook deflection angle wireless transmission device:

a set of wireless transmitting devices for remotely switching two channels and a remote switch arranged in a crane operating room for transmitting the measured hook deflection angle signals are arranged on the connecting piece a3 or the fixed pulley guard plate of the crane, and a set of receiving cooperative square hook deflection angle receiving control devices for switching two channels are arranged in the crane operating room in a matching way;

(3) installing a hoisting load detector:

a hoisting load detector is arranged on the crane;

(4) installing a wireless transmission device for the hoisting load:

the remote control switch is arranged on a wireless transmitting device of a crane operation room for transmitting the measured hoisting load signal, and a set of local load receiving control device for switching two channels and a set of cooperative load receiving control device for switching two channels are arranged in the crane operation room in a matching way.

2. The single-machine hoisting and lifting hoisting device according to claim 1, wherein during single-machine hoisting, the single-machine hook deflection angle wireless transmitting device is enabled to occupy one channel through a remote switch arranged in a crane operating room, and only the hook deflection angle receiving control device for receiving the single-machine channel is enabled; or the real-time hook deflection angle is displayed in the single machine operation room through bus transmission.

3. The single machine lifting and hoisting device according to claim 1, wherein a set of three-channel remote control switch device is installed on the connector a3 or the fixed pulley guard plate, a remote switch is installed on the crane operating room to wirelessly transmit the measured hook deflection angle signal, and three sets of three-channel switching receiving and displaying hook deflection angle receiving control devices are installed on the crane operating room.

4. The single-machine hoisting and hoisting device as claimed in claim 1, wherein the crane is provided with a set of three-channel remote control switching device, a remote switch is arranged in the crane operation room and used for wirelessly transmitting the measured hoisting load signal, and three sets of three-channel switching receiving and displaying hoisting load receiving control devices are arranged in the crane operation room.

5. The stand-alone lifting and hoisting device according to claim 1, wherein the same type of said hoist load detector is installed on both the crane and the cooperating crane.

6. A mobile crane, comprising the single-crane hoisting and lifting hoisting device as claimed in any one of claims 1 to 5.

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