Crane with a movable crane
阅读说明:本技术 起重机 (Crane with a movable crane ) 是由 林洋幸 于 2019-03-08 设计创作,主要内容包括:课题在于,提供实现操作性的提高和安全性的提高的起重机。起重机(1)具备起伏及伸缩自如的臂(7)、从所述臂(7)垂下的钢缆(8)、进行所述钢缆(8)的卷入及卷出的卷扬机(9)、以及通过所述钢缆(8)的卷入及卷出而升降的钩(10),该起重机具备能够指示所述卷扬机(9)的动作状态的卷绕操作工具(24),如果通过所述卷绕操作工具(24)的操作从而所述钩(10)上升到规定的吊下长度(d),则一边卷出所述钢缆(8)以保持该吊下长度(d),一边所述臂(7)起立而且伸长来使所述钩(10)的上升动作持续。(The problem is to provide a crane which improves operability and safety. A crane (1) is provided with an arm (7) which can freely rise and fall and stretch, a steel cable (8) which hangs down from the arm (7), a winding machine (9) which winds in and out the steel cable (8), and a hook (10) which ascends and descends by winding in and out the steel cable (8), the crane is provided with a winding operation tool (24) which can indicate the operation state of the winding machine (9), if the hook (10) ascends to a specified hanging length (d) through the operation of the winding operation tool (24), the lifting action of the hook (10) is continued while the steel cable (8) is wound out to maintain the hanging length (d) and the arm (7) stands up and stretches.)
1. A crane is provided with:
an arm which can freely move up and down and stretch;
a cable depending from the arm;
a winding machine for winding in and out the steel cable; and
a hook which is lifted and lowered by winding in and out the wire rope,
it is characterized in that the preparation method is characterized in that,
the crane is provided with a winding operation tool capable of indicating the operation state of the winch,
when the hook is raised to a predetermined hanging length by the operation of the winding operation tool, the arm is raised and extended while the wire rope is wound out to maintain the hanging length, thereby continuing the raising operation of the hook.
2. The crane according to claim 1,
the rising and extending movements of the arm are adjusted so that the rising movement of the hook is directed vertically upward.
3. A crane as claimed in claim 1 or claim 2,
the speed of the hook rising operation by the arm rising operation and the arm extending operation can be changed by the operation of the winding operation tool.
4. A crane is provided with:
an arm which can freely move up and down and stretch;
a cable depending from the arm;
a winding machine for winding in and out the steel cable; and
a hook which is lifted and lowered by winding in and out the wire rope,
it is characterized in that the preparation method is characterized in that,
the crane is provided with:
a winding operation tool capable of indicating an operation state of the hoisting machine; and
a switch capable of indicating to maintain the hook's drop length,
when the winding operation tool is operated in one direction when the switch is in an 'on' state, the arm is raised and extended to raise the hook while the wire rope is wound out to maintain the hanging length of the hook,
when the winding operation tool is operated toward the other side when the switch is in the "on" state, the arm falls down and contracts to lower the hook while winding in the wire rope to maintain the hanging length of the hook.
5. A crane as claimed in claim 4,
the rising and extending movements of the arm or the collapsing and retracting movements of the arm are adjusted to make the lifting and lowering movements of the hook vertically upward or vertically downward.
6. A crane as claimed in claim 4 or claim 5,
the speed of the hook lifting operation by the arm raising operation and the arm extending operation or the arm lowering operation and the arm retracting operation can be changed by the operation of the winding operation tool.
7. A crane is provided with:
an arm which can freely move up and down and stretch;
a cable depending from the arm;
a winding machine for winding in and out the steel cable; and
a hook which is lifted and lowered by winding in and out the wire rope,
it is characterized in that the preparation method is characterized in that,
the crane is provided with:
a winding operation tool capable of indicating an operation state of the hoisting machine; and
a switch capable of indicating to hold the head of the hook,
when the winding operation tool is operated in one direction when the switch is in an 'on' state, the arm stands up and extends to change the posture of the arm while the wire rope is wound out to hold the head of the hook,
when the winding operation tool is operated toward the other side when the switch is in the "on" state, the arm falls down and contracts to change the posture of the arm while winding in the wire rope to keep the head of the hook.
8. A crane as claimed in claim 7,
the rising and extending motion of the arm or the falling and retracting motion of the arm is adjusted to maintain the position of the hook.
9. A crane as claimed in claim 7 or claim 8,
the speed of change in the posture of the arm due to the rising and extending operations of the arm or the collapsing and retracting operations of the arm can be changed by the operation of the winding operation tool.
Technical Field
The present invention relates to cranes. And more particularly, to a crane that achieves an improvement in operability and an improvement in safety.
Background
Conventionally, a crane as a representative work vehicle is known (see patent document 1). The crane is mainly composed of a traveling body and a revolving body. The traveling body includes a plurality of wheels and is configured to travel freely. The revolving body is provided with a wire rope, a hoist, and a hook in addition to the arm, and is configured to freely convey the load.
Such a crane performs a cargo conveying operation in a state where the arm is raised and extended (see patent document 2). However, there are the following problems: the operation of winding out the cable and simultaneously making the arm stand up and stretch is complicated and difficult. In addition, there are also problems as follows: if the rising motion and the extending motion of the arm are not properly operated, the hook or the load moves in the horizontal direction, and the hook or the load collides with the side surface of the building or the like. Further, these problems also exist with respect to the operation of winding in the wire rope and simultaneously collapsing and contracting the arm. Accordingly, a crane that achieves both improvement in operability and improvement in safety is required.
Prior art documents
Patent document
Patent document 1 Japanese patent laid-open publication No. 2017-122003
Patent document 2 Japanese patent laid-open publication No. 2017-30634
Disclosure of Invention
Problems to be solved by the invention
Provided is a crane which achieves an improvement in operability and an improvement in safety.
Means for solving the problems
In the crane according to the present invention, it is preferable that the crane includes:
an arm which can freely move up and down and stretch;
a cable depending from the arm;
a winding machine for winding in and out the steel cable; and
a hook which is lifted and lowered by winding in and out the wire rope,
the crane is provided with a winding operation tool capable of indicating the operation state of the winch,
when the hook is raised to a predetermined hanging length by the operation of the winding operation tool, the arm is raised and extended while the wire rope is wound out to maintain the hanging length, thereby continuing the raising operation of the hook.
In the hoist of the present invention, it is preferable that,
the rising and extending movements of the arm are adjusted so that the rising movement of the hook is directed vertically upward.
In the hoist of the present invention, it is preferable that,
the speed of the hook rising operation by the arm rising operation and the arm extending operation can be changed by the operation of the winding operation tool.
A crane according to the present invention is a crane including:
an arm which can freely move up and down and stretch;
a cable depending from the arm;
a winding machine for winding in and out the steel cable; and
a hook which is lifted and lowered by winding in and out the wire rope,
the crane is provided with:
a winding operation tool capable of indicating an operation state of the hoisting machine; and
a switch capable of indicating to maintain the hook's drop length,
when the winding operation tool is operated in one direction when the switch is in an 'on' state, the arm is raised and extended to raise the hook while the wire rope is wound out to maintain the hanging length of the hook,
when the winding operation tool is operated toward the other side when the switch is in the "on" state, the arm falls down and contracts to lower the hook while winding in the wire rope to maintain the hanging length of the hook.
In the hoist of the present invention, it is preferable that,
the rising and extending movements of the arm or the collapsing and retracting movements of the arm are adjusted to make the lifting and lowering movements of the hook vertically upward or vertically downward.
In the hoist of the present invention, it is preferable that,
the speed of the hook lifting operation by the arm raising operation and the arm extending operation or the arm lowering operation and the arm retracting operation can be changed by the operation of the winding operation tool.
A crane according to the present invention is a crane including:
an arm which can freely move up and down and stretch;
a cable depending from the arm;
a winding machine for winding in and out the steel cable; and
a hook which is lifted and lowered by winding in and out the wire rope,
the crane is provided with:
a winding operation tool capable of indicating an operation state of the hoisting machine; and
a switch capable of indicating to hold the head of the hook,
when the winding operation tool is operated in one direction when the switch is in an 'on' state, the arm stands up and extends to change the posture of the arm while the wire rope is wound out to hold the head of the hook,
when the winding operation tool is operated toward the other side when the switch is in the "on" state, the arm falls down and contracts to change the posture of the arm while winding in the wire rope to keep the head of the hook.
In the hoist of the present invention, it is preferable that,
the rising and extending motion of the arm or the falling and retracting motion of the arm is adjusted to maintain the position of the hook.
In the hoist of the present invention, it is preferable that,
the speed of change in the posture of the arm due to the rising and extending operations of the arm or the collapsing and retracting operations of the arm can be changed by the operation of the winding operation tool.
Effects of the invention
According to the present invention, the crane includes a winding operation tool capable of indicating an operation state of the hoist. Further, if the hook is raised to a predetermined hanging length by the operation of the winding operation tool, the arm is raised and extended to continue the raising operation of the hook while the wire rope is wound out to maintain the hanging length. According to this crane, it is not necessary to perform an operation of winding out the wire rope and simultaneously raising and extending the arm. Further, since no operational error occurs in the operation of raising and extending the arm, it is possible to prevent the hook or the load from colliding with the side surface of the building or the like. Therefore, the operability and safety can be improved.
According to the crane of the present invention, the rising motion of the hook is made vertically upward by adjusting the rising motion and the extending motion of the arm. According to this crane, the hook or the cargo does not move in the horizontal direction, and therefore, further improvement in safety can be achieved.
According to the crane of the present invention, the speed of the hook lifting operation by the arm raising operation and the arm extending operation can be changed by the operation of the winding operation tool. According to this crane, since the ascending operation speed can be easily accelerated or decelerated based on the intention of the operator, further improvement in operability and further improvement in safety can be achieved.
According to the present invention, a crane is provided with a winding operation tool capable of indicating an operation state of a hoist, and a switch capable of indicating a hanging-down length of a holding hook. Further, if the winding operation tool is operated to one side when the switch is in the "on" state, the arm is raised and extended to raise the hook while the wire rope is wound out to maintain the hanging length of the hook, and if the winding operation tool is operated to the other side when the switch is in the "on" state, the arm is collapsed and contracted to lower the hook while the wire rope is wound in to maintain the hanging length of the hook. According to this crane, it is not necessary to perform an operation of winding out the wire rope and simultaneously raising and extending the arm. Further, since no operational error occurs in the operation of raising and extending the arm, it is possible to prevent the hook or the load from colliding with the side surface of the building or the like. Also, according to this crane, there is no need to perform an operation of winding in the wire rope and simultaneously lodging and contracting the arm. Further, since no operational error occurs in the operation of collapsing and retracting the arm, it is possible to prevent the hook or the load from colliding with the side surface of the building or the like. Therefore, the operability and safety can be improved.
According to the crane of the present invention, the raising and lowering operation of the hook is adjusted to be vertically upward or vertically downward by the raising and lowering operation and the extending operation of the arm or the lowering operation and the retracting operation of the arm. According to this crane, the hook or the cargo does not move in the horizontal direction, and therefore, further improvement in safety can be achieved.
According to the crane of the present invention, the speed of the hook lifting operation by the arm raising operation and the arm extending operation or the arm lowering operation and the arm retracting operation can be changed by the operation of the winding operation tool. According to this crane, since the elevating operation speed can be easily accelerated and decelerated based on the intention of the operator, further improvement in operability and further improvement in safety can be achieved.
According to the present invention, a crane is provided with a winding operation tool capable of indicating an operation state of a hoist, and a switch capable of indicating a lift of a holding hook. Further, if the winding operation tool is operated to one side when the switch is in the "on" state, the arm stands up and extends to change the posture of the arm while the wire rope is wound out to hold the lift of the hook, and if the winding operation tool is operated to the other side when the switch is in the "on" state, the arm falls down and contracts to change the posture of the arm while the wire rope is wound in to hold the lift of the hook. According to this crane, it is not necessary to perform an operation of winding out the wire rope and simultaneously raising and extending the arm. Further, since no operational error occurs in the operation of raising and extending the arm, it is possible to prevent the hook or the load from colliding with the side surface of the building or the like. Also, according to this crane, there is no need to perform an operation of winding in the wire rope and simultaneously lodging and contracting the arm. Further, since no operational error occurs in the operation of collapsing and retracting the arm, it is possible to prevent the hook or the load from colliding with the side surface of the building or the like. Therefore, the operability and safety can be improved.
According to the crane of the present invention, the position of the hook is maintained by adjusting the rising motion and the extending motion of the arm or the falling motion and the retracting motion of the arm. According to this crane, the hook or the cargo does not move in the vertical direction and the horizontal direction, and therefore, the safety can be further improved.
According to the crane of the present invention, the speed of change in the attitude of the arm due to the raising operation and the extending operation of the arm or the lowering operation and the retracting operation of the arm can be changed by the operation of the winding operation tool. According to this crane, since the attitude change speed can be easily accelerated and decelerated based on the intention of the operator, further improvement in operability and further improvement in safety can be achieved.
Drawings
Fig. 1 is a diagram showing a crane.
Fig. 2 is a view showing the interior of the cab.
Fig. 3 is a diagram showing a configuration of the control system.
Fig. 4 is a diagram showing a control method for the operation of the winding operation tool.
Fig. 5 is a diagram showing a state where the load is lifted by the winding operation of the hoist.
Fig. 6 is a diagram showing a state where the load is lifted by the arm raising operation and the arm extending operation.
Fig. 7 is a diagram showing a state where the load is suspended by the winding-out operation of the hoisting machine.
Fig. 8 is a diagram showing a control method for the operation of the winding operation tool.
Fig. 9 is a diagram showing a state where the load is lifted by the arm raising operation and the arm extending operation.
Fig. 10 is a diagram showing a state where the load is suspended by the collapsing operation and the retracting operation of the arm.
Fig. 11 is a diagram showing a control method for the operation of the winding operation tool.
Fig. 12 is a diagram showing a state in which the posture is changed by the arm standing operation and the arm extending operation.
Fig. 13 is a diagram showing a state in which the posture is changed by the collapsing operation and the retracting operation of the arm.
Fig. 14 is a diagram showing a remote operation terminal.
Detailed Description
The technical idea disclosed in the present application can be applied not only to the crane 1 described below but also to other cranes.
First, a schematic description of the crane 1 will be given with reference to fig. 1 and 2.
The crane 1 is mainly composed of a traveling body 2 and a revolving
The traveling body 2 includes a pair of left and right front tires 4 and
The
Next, a schematic description of the control system will be given with reference to fig. 3.
The control system is mainly constituted by the control device 100.
As described above, the arm 7 is rotatable by the actuator. In the present application, the actuator is defined as a turning
As described above, the arm 7 is configured to be freely raised and lowered by the actuator (see arrows a and B in fig. 1). In the present application, the actuator is defined as a
Further, as described above, the arm 7 is extendable and retractable by the actuator (see arrows C and D in fig. 1). In the present application, this actuator is defined as a
Further, as described above, the
With this configuration, the control device 100 can control the actuators (51/52/53/54) through the valves 31 to 34. However, it is expected that each actuator (51/52/53/54) will be replaced by an electric actuator in the near future. In this case, the control device 100 can directly control the electric actuator without passing through the various valves 31 to 34.
The control device 100 is connected to a changeover switch 41 and an overwind sensor 42.
The selector switch 41 is attached to the latch portion of the selector button 25. The operator can instruct the control device 100 to switch the control method for the operation of the winding
The overwind sensor 42 is attached to the
Next, a control method for the operation of the winding
In step S11, the control device 100 determines whether the winding
In step S12, the control device 100 starts the winding operation of the hoist 9. Specifically, the control device 100 controls the winding valve 34 to supply the working oil to the winding
In step S13, the control device 100 determines whether or not the overwind sensor 42 is operated. In other words, it is determined whether the
In step S14, control device 100 recognizes the posture of arm 7 (arm angle G and arm length H: see fig. 1). This is because the control amount of each control target changes according to the posture of the arm 7. For example, in a posture in which the arm angle G at which the arm 7 falls down is small, the amount of extension of the arm 7 is small with respect to the angle change due to the standing motion, and in a posture in which the arm angle G at which the arm 7 stands up is large, the amount of extension of the arm 7 is large with respect to the angle change due to the standing motion. Further, the amount of winding of the wire rope 8 by the hoist 9 is correlated with the amount of extension of the arm 7. Thereafter, the process proceeds to step S15.
In step S15, the control device 100 starts the winding-out operation of the hoist 9 and starts the raising operation and the extending operation of the arm 7. Specifically, the control device 100 controls the winding valve 34 to supply the hydraulic oil to the winding
At the same time, the control device 100 starts the raising operation of the arm 7. Specifically, the control device 100 controls the heave valve 32 to supply the hydraulic oil to the
Further, the control device 100 simultaneously starts the extending operation of the arm 7. Specifically, the controller 100 controls the expansion/contraction valve 33 to supply the hydraulic oil to the expansion/
In step S16, the control device 100 determines whether or not the winding
In step S17, the control device 100 starts the unwinding operation of the hoisting
As described above, the crane 1 includes the winding
Further, the crane 1 adjusts the raising operation and the extending operation of the arm 7 so that the raising operation of the
Further, the crane 1 can change the speed of the
Next, a control method for the operation of the winding
In step S21, the control device 100 determines whether the winding
In step S22, control device 100 recognizes the posture of arm 7 (arm angle G and arm length H: see fig. 1). This is because the control amount of each control target changes according to the posture of the arm 7. For example, in a posture in which the arm angle G at which the arm 7 falls down is small, the amount of extension of the arm 7 is small with respect to the angle change due to the standing motion, and in a posture in which the arm angle G at which the arm 7 stands up is large, the amount of extension of the arm 7 is large with respect to the angle change due to the standing motion. Further, the amount of winding of the wire rope 8 by the hoist 9 is correlated with the amount of extension of the arm 7. Thereafter, the process proceeds to step S23.
In step S23, the control device 100 starts the winding-out operation of the hoist 9 and starts the raising operation and the extending operation of the arm 7. Specifically, the control device 100 controls the winding valve 34 to supply the hydraulic oil to the winding
At the same time, the control device 100 starts the raising operation of the arm 7. Specifically, the control device 100 controls the heave valve 32 to supply the hydraulic oil to the
Further, the control device 100 simultaneously starts the extending operation of the arm 7. Specifically, the controller 100 controls the expansion/contraction valve 33 to supply the hydraulic oil to the expansion/
In step S24, the control device 100 determines whether or not the winding
In step S25, control device 100 recognizes the posture of arm 7 (arm angle G and arm length H: see fig. 1). This is because the control amount of each control target changes according to the posture of the arm 7. For example, in a posture in which the arm angle G at which the arm 7 stands up is large, the amount of contraction of the arm 7 is large with respect to the angle change due to the falling operation, and in a posture in which the arm angle G at which the arm 7 falls down is small, the amount of contraction of the arm 7 is small with respect to the angle change due to the falling operation. Further, the amount of winding of the wire rope 8 by the hoist 9 is correlated with the amount of extension of the arm 7. Thereafter, the process proceeds to step S26.
In step S26, the control device 100 starts the winding operation of the hoist 9 and starts the collapsing operation and the retracting operation of the arm 7. Specifically, the control device 100 controls the winding valve 34 to supply the working oil to the winding
At the same time, the control device 100 starts the collapsing operation of the arm 7. Specifically, the control device 100 controls the heave valve 32 to supply the hydraulic oil to the
Further, the control device 100 simultaneously starts the retracting operation of the arm 7. Specifically, the controller 100 controls the expansion/contraction valve 33 to supply the hydraulic oil to the expansion/
As described above, the crane 1 includes the winding
Further, the crane 1 adjusts the raising and lowering operation of the arm 7 or the lowering and retracting operation of the arm 7 so that the raising and lowering operation of the
Further, the crane 1 can change the speed of the lifting operation of the
Next, a control method for the operation of the winding
In step S31, the control device 100 determines whether the winding
In step S32, control device 100 recognizes the posture of arm 7 (arm angle G and arm length H: see fig. 1). This is because the control amount of each control target changes according to the posture of the arm 7. For example, in a posture in which the arm angle G at which the arm 7 falls down is small, the amount of extension of the arm 7 is small with respect to the angle change due to the standing motion, and in a posture in which the arm angle G at which the arm 7 stands up is large, the amount of extension of the arm 7 is large with respect to the angle change due to the standing motion. Further, the amount of winding of the wire rope 8 by the hoist 9 is correlated with the amount of extension of the arm 7. Thereafter, the process proceeds to step S33.
In step S33, the control device 100 starts the winding-out operation of the hoist 9 and starts the raising operation and the extending operation of the arm 7. Specifically, the control device 100 controls the winding valve 34 to supply the hydraulic oil to the winding
At the same time, the control device 100 starts the raising operation of the arm 7. Specifically, the control device 100 controls the heave valve 32 to supply the hydraulic oil to the
Further, the control device 100 simultaneously starts the extending operation of the arm 7. Specifically, the controller 100 controls the expansion/contraction valve 33 to supply the hydraulic oil to the expansion/
In step S34, the control device 100 determines whether or not the winding
In step S35, control device 100 recognizes the posture of arm 7 (arm angle G and arm length H: see fig. 1). This is because the control amount of each control target changes according to the posture of the arm 7. For example, in a posture in which the arm angle G at which the arm 7 stands up is large, the amount of contraction of the arm 7 is large with respect to the angle change due to the falling operation, and in a posture in which the arm angle G at which the arm 7 falls down is small, the amount of contraction of the arm 7 is small with respect to the angle change due to the falling operation. Further, the amount of winding of the wire rope 8 by the hoist 9 is correlated with the amount of extension of the arm 7. Thereafter, the process proceeds to step S36.
In step S36, the control device 100 starts the winding operation of the hoist 9 and starts the collapsing operation and the retracting operation of the arm 7. Specifically, the control device 100 controls the winding valve 34 to supply the working oil to the winding
At the same time, the control device 100 starts the collapsing operation of the arm 7. Specifically, the control device 100 controls the heave valve 32 to supply the hydraulic oil to the
Further, the control device 100 simultaneously starts the retracting operation of the arm 7. Specifically, the controller 100 controls the expansion/contraction valve 33 to supply the hydraulic oil to the expansion/
As described above, the crane 1 includes the winding
Further, the crane 1 adjusts the raising operation and the extending operation of the arm 7 or the lowering operation and the retracting operation of the arm 7 to maintain the position of the
Further, the crane 1 can change the posture change speed of the arm 7 by the raising operation and the extending operation of the arm 7 or the lowering operation and the retracting operation of the arm 7 by the operation of the winding
Next, the remote operation terminal 200 will be described with reference to fig. 14. However, the remote operation terminal 200 is an example of a remote operation terminal, and is not limited thereto.
The remote operation terminal 200 is provided with a swing operation tool 210, a raising and lowering operation tool 220, a telescopic operation tool 230, a winding operation tool 240, and the like, which are necessary for a conveyance operation. In addition, the remote operation terminal 200 is provided with a switch button 250.
The crane 1 operates in the same manner as when the above-described
Finally, the crane 1 may be provided with a joystick instead of the
The invention according to the present application is configured to control the arm 7 and the hoist 9. Here, in the case where the boom is provided at the tip end portion of the arm 7 and the boom is freely raised and lowered, the first to third inventions may be set up as the raising of the boom instead of the raising of the arm 7. In the fourth to sixth inventions, the lifting rod may be set to be raised or lowered instead of raising or lowering the arm 7. Further, in the seventh to ninth inventions, the lifting rod may be set to be raised or lowered instead of raising or lowering the arm 7.
That is, the jack rod is included in the arm 7 as a component of the arm 7.
Industrial applicability
The invention can be used for cranes. Specifically, the crane can be used to improve operability and safety.
Description of reference numerals:
1 Crane
2 traveling body
3a rotary body
7 arm
8 steel cable
9 hoist
10 hook
12 balance weight
21-turn operating tool
22 fluctuation operation tool
23 Telescopic operation tool
24-winding operation tool
25 switching button
31-turn valve
32 fluctuation valve
33 expansion valve
34 winding valve
41 Change-over switch (switch)
42 overwinding sensor (sensor)
51-turn motor
52 oil cylinder for heave
53 oil cylinder for extension
54 winding motor
100 control device
d length under suspension
h lift
W goods.
- 上一篇:一种医用注射器针头装配设备
- 下一篇:履带式起重机