CN115432586A - Device for preventing reverse operation brake of large-scale traveling crane and control method - Google Patents
Device for preventing reverse operation brake of large-scale traveling crane and control method Download PDFInfo
- Publication number
- CN115432586A CN115432586A CN202211074509.1A CN202211074509A CN115432586A CN 115432586 A CN115432586 A CN 115432586A CN 202211074509 A CN202211074509 A CN 202211074509A CN 115432586 A CN115432586 A CN 115432586A
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- Prior art keywords
- spline
- motor
- shaft
- traveling crane
- sleeve
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000009776 industrial production Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B66C13/18—Control systems or devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention relates to a device for preventing a large-scale travelling crane from reversely operating and braking and a control method thereof.A spline sliding mechanism is arranged at one end of a large-scale travelling crane motor, the characteristic that the spline sleeve has different axial friction forces with a spline shaft when rotating and standing is utilized, and a reset spring and a contact switch are respectively arranged at two side surfaces of the spline sleeve, so that an electric key which is operated and controlled in the opposite direction on an operating handle fails in the operation process of a driving device, the purpose that the large-scale travelling crane cannot be reversely operated in the operation process is realized, and the problem that travelling crane parts are damaged due to the operation of a reverse operation surface is solved. The invention has the advantages of ingenious design, simple operation, stable operation, good control effect and the like.
Description
Technical Field
The invention relates to a control device for preventing reverse operation brake in the running process of a traveling crane and a control method using the device, belonging to the technical field of mechanical and electrical integration.
Background
The traveling crane is commonly used in large-scale projects, such as workshops, subways, viaducts and the like, and is widely applied. In modern heavy industrial production, large-scale driving is more popular, often sets up many driving in a workshop to satisfy the lift by crane and the transport of heavy object, this just requires that there are many driving operating personnel. In the actual production process, an operator is prone to error, particularly when the moving distance exceeds the actual required travel, the standard operation program is to move in the reverse direction after braking, however, some operators directly perform reverse operation, and although the traveling crane can return after emergency braking, the traveling crane brings great damage to various running parts of the traveling crane, especially when heavy objects are hung, the damage is more serious, and the failure rate of the traveling crane is very high.
Disclosure of Invention
The invention provides a device for preventing a large-scale traveling crane from reversely operating a brake and a control method.
The invention is implemented through the following technical scheme, a device for preventing a large-scale traveling crane from reversely operating and braking and a control method, the device comprises a device for realizing the control method and an operation method, the device comprises a driving device and the traveling crane, the driving device comprises a motor and a control handle, one end of a rotating shaft of the motor drives the traveling crane, the motor rotates forwards and backwards to drive the traveling crane to move left and right, the control handle is provided with a plurality of electric keys with different functions, and the device is characterized in that:
the other end of the motor rotating shaft is provided with a spline shaft, a spline sleeve is arranged on the spline shaft, and the spline sleeve is meshed with the spline shaft and can slide on the spline shaft;
two side surfaces of the spline sleeve are provided with return springs, and the return springs control the position of the spline sleeve on the spline shaft;
two side surfaces of the spline sleeve are respectively provided with an electromagnet, and the spline sleeve is driven to axially slide on the spline shaft;
the two side surfaces of the spline housing are respectively provided with a contact switch, the contact switch arranged on the left side surface is used for switching on or off a control circuit of the motor running rightwards, and the contact switch arranged on the right side surface is used for switching on or off a control circuit of the motor running leftwards;
the control method comprises the following steps:
the electric key for controlling the leftward movement function on the control handle is pressed, the motor is electrified to rotate forward to drive the traveling crane to move leftward, the electromagnet on the right side of the spline sleeve is electrified to toggle the spline sleeve to slide leftward on the spline shaft, the reset spring on the left side of the spline sleeve is compressed, the contact switch on the left side of the spline sleeve is disconnected, and the electric key for controlling the rightward movement function of the traveling crane on the control handle fails;
the electric key on the control handle for controlling the leftward movement function is loosened, the electromagnet on the right side is powered off and reset, the motor is powered off and decelerates, the spline housing rotates along with the motor shaft, the friction force between the spline housing and the spline shaft is greater than the elastic force of the reset spring on the left side, and the spline housing cannot be reset;
the motor decelerates gradually to stop rotating, the elastic force of the reset spring on the left side is larger than the friction force between the spline housing and the spline shaft, the spline housing returns to the initial position, and the control handle controls the electric key of the traveling crane to move rightwards to be switched on.
The electric key for controlling the function of moving the travelling crane to the right on the control handle is pressed, the motor is powered to rotate reversely, the travelling crane is driven to move to the right, the electromagnet on the left side of the spline sleeve is powered to shift the spline sleeve to slide to the right on the spline shaft, the reset spring on the right side of the spline sleeve is compressed, the contact switch on the right side of the spline sleeve is disconnected, and the electric key for controlling the function of moving the travelling crane to the left on the control handle is disabled;
the electric key on the control handle for controlling the function of moving rightwards is loosened, the electromagnet on the left side is powered off and reset, the motor is powered off and decelerates, the spline housing rotates along with the motor shaft, the friction force between the spline housing and the spline shaft is greater than the elastic force of the reset spring on the right side, and the spline housing cannot reset;
the motor gradually decelerates to stop rotating, the elastic force of the right reset spring is larger than the axial friction force between the spline housing and the spline shaft, the spline housing returns to the initial position, and the control handle controls the electric key of the traveling crane to move leftwards to be switched on.
Furthermore, the number of the electromagnets is one, and the spline is pulled to be sleeved on the spline shaft to slide leftwards or rightwards.
Further, the contact switch is a travel switch contact switch.
According to the invention, one end of the large-scale traveling crane motor is set as the spline sliding mechanism, the characteristic that the spline sleeve has different axial friction with the spline shaft when rotating and standing is utilized, and the spline sleeve is matched with the return spring and the control contact switch, so that the keys on the operating handle which run in opposite directions fail in the running process of the driving device, and the purpose that the large-scale traveling crane cannot be operated reversely in the running process is realized.
The invention has the advantages of ingenious design, simple operation, stable operation, good control effect and the like.
Drawings
FIGS. 1, 4, 5 and 8 are position state diagrams of various parts of the control device in a running static state;
FIG. 2 is a position state diagram of each component of the control device when the traveling crane runs leftwards;
FIG. 3 is a position state diagram of each component of the control device in the process of braking when the vehicle runs leftwards;
FIG. 6 is a diagram showing the position of each component of the control device when the vehicle is moving to the right;
FIG. 7 is a diagram showing the position of the various components of the control device during the braking process of the right-hand operation of the vehicle.
In the attached drawing, 1 is a spline shaft, 2 is a spline sleeve, 3 is a return spring, A and B are electromagnets, D is a motor, and a and B are contact switches.
Detailed Description
The invention is further explained below with reference to the drawings:
fig. 1 and 5 show position state diagrams of components in the starting position control device, in which the spline shaft 1 is in a stationary state, the return springs 3 press the spline housing 2 at the middle position of the spline shaft 1, and at this time, the pressing forces of the return springs 3 on both sides of the spline housing 2 on the spline housing 2 are minimum and offset each other.
As shown in the attached drawing 2, a key controlling leftward movement on the control handle is pressed, the motor D drives the traveling crane to move leftward, the electromagnet B on the right side of the spline housing 2 is electrified, the electromagnet B drives the spline housing 2 to slide leftward on the spline shaft 1, the reset spring 3 on the left side of the spline housing 2 is compressed, the contact switch a on the left side of the spline housing 2 is disconnected, a control power supply controlling rightward movement of the traveling crane is disconnected, and the key controlling rightward movement of the traveling crane on the control handle is disabled.
As shown in the attached figure 3, when the control handle is loosened to control the key moving leftwards, the electromagnet B on the right side is powered off and reset, the motor D is powered off and decelerates, the spline housing 2 rotates along with the shaft of the motor D, the friction force between the spline housing 2 and the spline shaft 1 is larger than the elastic force of the reset spring 3 on the left side, and the spline housing 2 cannot reset.
As shown in the attached figure 4, as the motor D gradually decelerates to stop rotating, the elastic force of the return spring 3 on the left side is greater than the friction force between the spline housing 2 and the spline shaft 1, the spline housing 2 returns to the initial position, and the control handle is connected with a key for controlling the traveling crane to move rightwards.
As shown in the attached figure 6, a key controlling the traveling crane to move rightwards is pressed down on the control handle, the motor D drives the traveling crane to move rightwards, the electromagnet A on the left side of the spline housing 2 is electrified, the electromagnet A drives the spline housing 2 to slide rightwards on the spline shaft 1, the reset spring 3 on the right side of the spline housing 2 is compressed, the contact switch b on the right side of the spline housing 2 is disconnected, a control power supply for controlling the traveling crane to move leftwards is disconnected, and the key controlling the traveling crane to move leftwards on the control handle is invalid.
As shown in the attached figure 7, when an electric key which controls the right movement on the control handle is loosened, the electromagnet A on the left side is powered off and reset, the motor D is powered off and decelerates, the spline housing 2 rotates along with the shaft of the motor D, the friction force between the spline housing 2 and the spline shaft 1 is larger than the elastic force of the reset spring 3 on the right side, and the spline housing 2 cannot reset.
As shown in fig. 8, as the motor D gradually decelerates to stop rotating, the elastic force of the right return spring 3 is greater than the friction force between the spline housing 2 and the spline shaft 1, the spline housing 2 returns to the initial position, and the control handle controls the key on the traveling crane to move left to be switched on.
Claims (4)
1. A device for preventing reverse operation brake of a large-scale traveling crane comprises: drive arrangement and driving, drive arrangement includes motor and brake valve lever, the one end drive of motor shaft the driving, the motor is positive reverse to rotate the drive the driving side-to-side movement, brake valve lever is last to be equipped with the key of a plurality of different functions, its characterized in that:
in the device for realizing the control method, a spline shaft is arranged at the other end of the rotating shaft of the motor, a spline sleeve is arranged on the spline shaft, and the spline sleeve is meshed with the spline shaft and can slide on the spline shaft;
the two side faces of the spline housing are provided with return springs which control the position of the spline housing on the spline shaft;
two side surfaces of the spline sleeve are respectively provided with an electromagnet, and the spline sleeve is driven to axially slide on the spline shaft;
the two side surfaces of the spline housing are respectively provided with a contact switch, the contact switch arranged on the left side surface is used for switching on or switching off a control circuit of the motor running rightwards, and the contact switch arranged on the right side surface is used for switching on or switching off the control circuit of the motor running leftwards.
2. The device for preventing the reverse operation brake of a large-scale traveling crane according to claim 1, wherein: the number of the electromagnets is one, and the spline is shifted to be sleeved on the spline shaft to slide leftwards or rightwards.
3. The device for preventing the reverse operation brake of a large-scale traveling crane according to claim 1, wherein: the contact switch is a travel contact switch.
4. A control method using the apparatus of claim 1, characterized in that:
the electric key for controlling the leftward movement function on the control handle is pressed, the motor is electrified to rotate forward to drive the traveling crane to move leftward, the electromagnet on the right side of the spline sleeve is electrified to toggle the spline sleeve to slide leftward on the spline shaft, the reset spring on the left side of the spline sleeve is compressed, the contact switch on the left side of the spline sleeve is disconnected, and the electric key for controlling the rightward movement function of the traveling crane on the control handle fails;
the electric key on the control handle for controlling the leftward movement function is loosened, the electromagnet on the right side is powered off and reset, the motor is powered off and decelerates, the spline housing rotates along with the motor shaft, the friction force between the spline housing and the spline shaft is greater than the elastic force of the reset spring on the left side, and the spline housing cannot reset;
the motor is gradually decelerated to stop rotating, the elastic force of the reset spring on the left side is larger than the friction force between the spline housing and the spline shaft, the spline housing returns to the initial position, and the control handle is connected with a key for controlling the function of rightward movement of the traveling crane;
the electric key for controlling the function of moving the travelling crane leftwards on the control handle is pressed, the motor is electrified to rotate reversely, the travelling crane is driven to move rightwards, the electromagnet on the left side of the spline sleeve is electrified, the spline sleeve is stirred to slide rightwards on the spline shaft, the reset spring on the right side of the spline sleeve is compressed, the contact switch on the right side of the spline sleeve is disconnected, and the electric key for controlling the function of moving the travelling crane leftwards on the control handle fails;
loosening an electric key on the control handle for controlling the function of moving rightwards, powering off and resetting the electromagnet on the left side, powering off and decelerating the motor, rotating the spline housing along with the motor shaft, wherein the friction force between the spline housing and the spline shaft is greater than the elastic force of a reset spring on the right side, and the spline housing cannot be reset;
the motor gradually decelerates to stop rotating, the elastic force of the right reset spring is larger than the axial friction force between the spline housing and the spline shaft, the spline housing returns to the initial position, and the control handle controls the electric key of the traveling crane to move leftwards to be switched on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211074509.1A CN115432586A (en) | 2022-09-03 | 2022-09-03 | Device for preventing reverse operation brake of large-scale traveling crane and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211074509.1A CN115432586A (en) | 2022-09-03 | 2022-09-03 | Device for preventing reverse operation brake of large-scale traveling crane and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115432586A true CN115432586A (en) | 2022-12-06 |
Family
ID=84246418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211074509.1A Pending CN115432586A (en) | 2022-09-03 | 2022-09-03 | Device for preventing reverse operation brake of large-scale traveling crane and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115432586A (en) |
-
2022
- 2022-09-03 CN CN202211074509.1A patent/CN115432586A/en active Pending
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Application publication date: 20221206 |
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| WD01 | Invention patent application deemed withdrawn after publication |