CN212532235U - Monitoring system of balance weight type forklift - Google Patents
Monitoring system of balance weight type forklift Download PDFInfo
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- CN212532235U CN212532235U CN202021949931.3U CN202021949931U CN212532235U CN 212532235 U CN212532235 U CN 212532235U CN 202021949931 U CN202021949931 U CN 202021949931U CN 212532235 U CN212532235 U CN 212532235U
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Abstract
The utility model provides a monitoring system of a balance weight type forklift, which comprises a system reset module, a tire pressure monitoring module, a judgment module and a display module; the system resetting module, the tire pressure monitoring module and the display module are respectively in communication connection with the judging module; the system resetting module is used for sending a resetting signal to the judging module; the tire pressure monitoring module is used for monitoring the tire pressure of the rear wheel of the forklift and sending the tire pressure to the judging module; the judgment module is used for determining an initial tire pressure value and a measured tire pressure value; the judgment module is also used for comparing the difference value between the tire pressure initial value and the tire pressure measured value with a preset threshold value so as to judge whether the moment of the forklift is normal or not; the display module is used for receiving and outputting the judgment result sent by the judgment module. The change of the tire pressure of the rear wheel of the forklift is monitored to represent the change of the torque state of the forklift, so that the forklift can be prevented from overloading or the rear wheel can be operated off the ground, and the risk of safety accidents of the counter-weight forklift is reduced.
Description
Technical Field
The utility model relates to a fork truck technical field, in particular to counter-balanced formula fork truck's monitoring system.
Background
The counter weight forklift is a stacking lift vehicle having a fork for carrying a load, the load being in a cantilever state with respect to a front wheel and being balanced by the mass of the vehicle. The rear of the counter weight type forklift is provided with a counter weight, the counter weight and the fork are respectively positioned on the front side and the rear side of the front wheel, and the counter weight takes the front wheel as a fulcrum to play the roles of load limiting and balancing. When a driver uses the counter-weight type forklift, the forklift is usually prevented from being overloaded according to the weight of the counter weight.
However, during the use of the forklift, most of the weight of the goods is not directly marked on the surface of the goods, which may cause the forklift to have an accident due to overload; in addition, even be same goods, because the uneven and the not fixed reason such as the position of placing of goods on the fork of the distribution of quality of goods itself leads to promoting same goods and can appear the arm of force variation, moment variation promptly, like this probably leads to fork truck's rear wheel liftoff, and then leads to the incident.
SUMMERY OF THE UTILITY MODEL
The utility model provides a counter weight formula fork truck's monitoring system to solve the technical problem that current counter weight formula fork truck takes place the incident easily.
In order to solve the technical problem, the utility model provides a monitoring system of a balance weight type forklift, which comprises a system reset module, a tire pressure monitoring module, a judgment module and a display module; the system resetting module, the tire pressure monitoring module and the display module are respectively in communication connection with the judging module;
the system resetting module is used for sending a resetting signal to the judging module;
the tire pressure monitoring module is used for monitoring the tire pressure of a rear wheel of the forklift and sending the tire pressure of the rear wheel to the judging module, wherein the tire pressure of the rear wheel comprises an initial tire pressure value of the rear wheel when the forklift is in no load and a measured tire pressure value of the rear wheel when the forklift is in load;
the judgment module is used for taking the tire pressure of the first rear wheel behind the reset signal as the initial tire pressure value and taking the tire pressure of the rear wheel behind the initial tire pressure value as the measured tire pressure value according to the time sequence;
the judgment module is also used for comparing the difference value between the tire pressure initial value and the tire pressure measured value with a preset threshold value so as to judge whether the moment of the forklift is normal or not;
and the display module is used for receiving and outputting the judgment result sent by the judgment module.
Optionally, the system further includes a communication module, and the communication module is configured to send the determination result to a remote monitoring device.
Optionally, the preset threshold includes a first threshold, a second threshold and a third threshold which are sequentially increased, and the determining module is configured to determine a size relationship between a difference between the initial tire pressure value and the tire pressure measurement value and the first threshold, the second threshold and the third threshold; if the difference value is smaller than or equal to the first threshold value, the judging module is used for judging that the moment of the forklift is in a low moment state; if the difference value is larger than the first threshold value and smaller than or equal to the second threshold value, the judging module is used for judging that the moment of the forklift is in a medium moment state; if the difference value is larger than the second threshold value and smaller than or equal to the third threshold value, the judging module is used for judging that the moment of the forklift is in a high moment state; and if the difference value is larger than the third threshold value, the judgment module is used for judging that the moment of the forklift is in a dangerous moment state.
Optionally, when the judgment module judges that the moment of the forklift is a dangerous moment state, the judgment module is further configured to send a signal corresponding to the reduction of the power of the fork to a control system of the forklift, and the control system of the forklift is configured to reduce the power of the fork according to the signal corresponding to the reduction of the power of the fork until the fork stops operating.
Optionally, the display module includes a display screen, a voice player and a warning light, the display screen is used for displaying the characters corresponding to the determination result, the voice player is used for playing the voice corresponding to the determination result, and the warning light is used for displaying the light color corresponding to the determination result.
Optionally, the number of the tire pressure monitoring modules and the number of the rear wheels of the forklift are two, and the two tire pressure monitoring modules are respectively used for monitoring the tire pressure of one of the rear wheels.
The utility model provides a pair of counter weight formula fork truck's monitoring system changes the torque state who comes the sign fork truck through the tire pressure of monitoring fork truck rear wheel and changes, can prevent fork truck overload or rear wheel liftoff operation to the risk that the incident appears in counter weight formula fork truck has been reduced.
Drawings
Fig. 1 is a schematic structural diagram of a monitoring system of a counter-weight forklift according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a monitoring system of a counter-weight forklift according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating a truck with a constant weight according to an embodiment of the present invention lifting goods;
fig. 4 is a schematic flow chart of a monitoring method for a counter-weight forklift according to an embodiment of the present invention.
[ reference numerals are described below ]:
1-rear wheel; 2-cargo; 3-a pallet fork.
Detailed Description
To make the objects, advantages and features of the present invention clearer, the following description of the monitoring system of a counter-balanced forklift according to the present invention is provided with reference to the accompanying drawings. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
As shown in fig. 1 and 3, arrows in the drawings indicate transmission directions of signals, and the embodiment provides a monitoring system of a counter-weight forklift, which includes a system resetting module, a tire pressure monitoring module, a judging module and a display module; the system resetting module, the tire pressure monitoring module and the display module are respectively in communication connection with the judging module; the system resetting module is used for sending a resetting signal to the judging module; the tire pressure monitoring module is used for monitoring the tire pressure of a rear wheel 1 of the forklift and sending the tire pressure of the rear wheel 1 to the judging module, wherein the tire pressure of the rear wheel 1 comprises an initial tire pressure value of the rear wheel when the forklift is in no load and a measured tire pressure value of the rear wheel 1 when the forklift is in load; the judging module is used for taking the tire pressure of the first rear wheel 1 behind the reset signal as the initial tire pressure value and taking the tire pressure of the rear wheel 1 behind the initial tire pressure value as the measured tire pressure value according to the time sequence; the judgment module is also used for comparing the difference value between the tire pressure initial value and the tire pressure measured value with a preset threshold value so as to judge whether the moment of the forklift is normal or not; and the display module is used for receiving and outputting the judgment result sent by the judgment module.
In the scheme provided by the embodiment, considering the influence of the weight and air temperature change of each driver and the volume change of the air filled in the rear wheel 1 on the tire pressure of the rear wheel 1, a system resetting module is arranged to accurately acquire the initial values of the tire pressure of the rear wheel 1 at different moments; a driver can manually operate the reset module when the forklift is in no-load, the reset module generates a reset signal and sends the reset signal to the judgment module, and after the judgment module receives the reset signal, the tire pressure monitoring module can acquire an initial tire pressure value of the rear wheel 1 when the forklift is in no-load; in the continuous operation process of the forklift, a driver can manually operate the system reset module only when the forklift is started. The tire pressure measurement value of the rear wheel 1 of the forklift under load refers to the tire pressure of the rear wheel 1 when the forklift lifts the goods 2. The preset threshold value can be one value or a plurality of values, and when the preset threshold value is one value, if the difference value is greater than the preset threshold value, the moment abnormality of the forklift can be judged; when the preset threshold is a plurality of values, the moment state of the forklift may be subdivided into a plurality of states. The monitoring system can judge whether the moment of the forklift is normal by monitoring the tire pressure of one rear wheel 1 or monitoring the tire pressures of two rear wheels 1 at the same time, and when the tire pressures of the two rear wheels 1 are monitored, the display module can respectively output the moment states of the forklift represented by the tire pressures of the two rear wheels 1.
The monitoring system of the counter-weight forklift provided by the embodiment can prevent the forklift from overloading or the rear wheel 1 from lifting off the ground by representing the torque state change of the forklift through the tire pressure change of the rear wheel 1 of the monitoring forklift, thereby reducing the risk of safety accidents of the counter-weight forklift.
Optionally, as shown in fig. 2, an arrow in the figure indicates a transmission direction of a signal, and the system further includes a communication module, where the communication module is configured to send the determination result to a remote monitoring device.
In the scheme that this embodiment provided, will through communication module judge result sends to remote supervisory equipment, can increase the supervision dynamics, further reduces the risk that counter-weight formula fork truck the incident appears.
Optionally, the preset threshold includes a first threshold, a second threshold and a third threshold which are sequentially increased, and the determining module is configured to determine a size relationship between a difference between the initial tire pressure value and the tire pressure measurement value and the first threshold, the second threshold and the third threshold; if the difference value is smaller than or equal to the first threshold value, the judging module is used for judging that the moment of the forklift is in a low moment state; if the difference value is larger than the first threshold value and smaller than or equal to the second threshold value, the judging module is used for judging that the moment of the forklift is in a medium moment state; if the difference value is larger than the second threshold value and smaller than or equal to the third threshold value, the judging module is used for judging that the moment of the forklift is in a high moment state; and if the difference value is larger than the third threshold value, the judgment module is used for judging that the moment of the forklift is in a dangerous moment state. The low moment state, the medium moment state, the high moment state and the dangerous moment state all belong to judgment results of the judgment module.
In the scheme provided by the embodiment, the preset threshold is set to three values, so that the torque state of the forklift is subdivided into four intervals, and the torque change of the forklift can be reflected more accurately.
Optionally, referring to fig. 3, when the determining module determines that the torque of the forklift is in a dangerous torque state, the determining module is further configured to send a signal corresponding to reduction of power of the fork 3 to a control system of the forklift, and the control system of the forklift is configured to reduce the power of the fork 3 according to the signal corresponding to reduction of power of the fork 3 until the fork 3 stops operating. The control system of the forklift is a system for controlling the operation of the forklift.
In the scheme that this embodiment provided, the judge module can with fork truck's control system communication, when fork truck is in dangerous torque state, judge module can be timely to fork truck's control system sends the signal, makes fork truck in time reduce the power of fork 3 until fork 3 stall, avoids fork truck to continue carrying goods 2 and lead to taking place the incident under dangerous torque state.
Optionally, the display module includes a display screen, a voice player and a warning light, the display screen is used for displaying the characters corresponding to the determination result, the voice player is used for playing the voice corresponding to the determination result, and the warning light is used for displaying the light color corresponding to the determination result.
In the scheme that this embodiment provided, divide into characters, pronunciation and three kinds of modes outputs of light with the judged result of judging module to timely warning driver's fork truck is located the moment state.
Optionally, referring to fig. 1 and fig. 3, the number of the tire pressure monitoring modules and the number of the rear wheels 1 of the forklift are two, and the two tire pressure monitoring modules are respectively used for monitoring the tire pressure of one of the rear wheels 1.
In the scheme that this embodiment provided, it is considered that the tire pressure change of two rear wheels 1 may be different, so adopt two tire pressure monitoring modules to monitor the tire pressure of a rear wheel 1 respectively, make the monitoring more comprehensive.
Based on the same technical concept as the monitoring system of the counterweight type forklift, this embodiment further provides a monitoring method of the counterweight type forklift, where an execution main body of the method may be the determination module, and the determination module may be a single chip, and the method includes the following steps as shown in fig. 4:
s1, acquiring an initial value of the tire pressure of the rear wheel of the forklift in the no-load state;
s2, acquiring a tire pressure measured value of a rear wheel of the forklift during loading;
s3, calculating the difference value between the tire pressure initial value and the tire pressure measured value;
s4, comparing the difference value with a preset threshold value, and judging whether the moment of the forklift is normal or not;
and S5, outputting a judgment result.
According to the monitoring method for the counter weight type forklift, the moment state change of the forklift is represented by monitoring the tire pressure change of the rear wheel of the forklift, the forklift can be prevented from overloading or the rear wheel works off the ground, and therefore the risk of safety accidents of the counter weight type forklift is reduced.
Optionally, after the step S5, the method further includes: and sending the judgment result to remote monitoring equipment.
In the scheme that this embodiment provided, will through communication module judge result sends to remote supervisory equipment, can increase the supervision dynamics, further reduces the risk that counter-weight formula fork truck the incident appears.
Optionally, the preset threshold includes a first threshold, a second threshold, and a third threshold that increase sequentially, and the step S4 specifically includes:
judging the magnitude relation between the difference value of the tire pressure initial value and the tire pressure measured value and the first threshold value, the second threshold value and the third threshold value; if the difference is smaller than or equal to the first threshold value, determining that the moment of the forklift is in a low moment state; if the difference value is larger than the first threshold value and smaller than or equal to the second threshold value, determining that the moment of the forklift is in a medium moment state; if the difference value is larger than the second threshold value and smaller than or equal to the third threshold value, determining that the moment of the forklift is in a high moment state; and if the difference is larger than the third threshold value, judging that the moment of the forklift is in a dangerous moment state.
In the scheme provided by the embodiment, the preset threshold is set to three values, so that the torque state of the forklift is subdivided into four intervals, and the torque change of the forklift can be reflected more accurately.
Optionally, when it is determined that the moment of the forklift is a dangerous moment state, the method further includes: and sending a signal corresponding to the reduction of the power of the fork to a control system of the forklift, and reducing the power of the fork by the control system of the forklift according to the signal corresponding to the reduction of the power of the fork until the fork stops running.
In the scheme that this embodiment provided, the judge module can with fork truck's control system communication, when fork truck is in dangerous torque state, judge module can be timely to fork truck's control system sends the signal, makes fork truck in time reduce the power of fork until fork stall, avoids fork truck to continue carrying the goods under dangerous torque state and leads to taking place the incident.
As a specific embodiment, when the counter-weight forklift is unloaded, a forklift driver manually operates the system reset module, the judgment module receives a reset signal sent by the system reset module, receives and records tire pressure data sent by the tire pressure monitoring module at the same time, takes the tire pressure data at the moment as a tire pressure initial value pdot, and then enters a real-time monitoring state, the judgment module receives the tire pressure data sent by the tire pressure monitoring module in real time, that is, a tire pressure measured value pdot, and the judgment module calculates a difference value Δ P between the tire pressure initial value pdot and the tire pressure monitoring value pdot, where Δ P is pdot-pdot. When the delta P is less than or equal to the P low, the judgment module judges that the forklift is in a low-load state; when P is lower than delta P and is less than or equal to P, the judgment module judges that the forklift is in a medium load state; when the weight P is less than or equal to delta P in the weight P, the judgment module judges that the forklift is in a high-load state; when the delta P is larger than the P weight, the judgment module judges that the forklift is in a dangerous load state and sends a signal corresponding to the reduction of the power of the fork to a control system of the forklift, wherein the P low can be 0.1MPa, the P medium can be 0.2MPa, the P weight can be 0.4MPa, and the P low, the P medium and the P high are respectively the first threshold, the second threshold and the third threshold.
To sum up, the utility model provides a pair of counter weight formula fork truck's monitoring system and monitoring method changes the torque state who comes the representation fork truck through monitoring 1 tire pressure of fork truck rear wheel and changes, can prevent fork truck overload or 1 liftoff operation of rear wheel to the risk of incident appears in counter weight formula fork truck has been reduced.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the claims of the present invention.
Claims (6)
1. The monitoring system of the counter weight type forklift is characterized by comprising a system resetting module, a tire pressure monitoring module, a judging module and a display module; the system resetting module, the tire pressure monitoring module and the display module are respectively in communication connection with the judging module;
the system resetting module is used for sending a resetting signal to the judging module;
the tire pressure monitoring module is used for monitoring the tire pressure of a rear wheel of the forklift and sending the tire pressure of the rear wheel to the judging module, wherein the tire pressure of the rear wheel comprises an initial tire pressure value of the rear wheel when the forklift is in no load and a measured tire pressure value of the rear wheel when the forklift is in load;
the judgment module is used for taking the tire pressure of the first rear wheel behind the reset signal as the initial tire pressure value and taking the tire pressure of the rear wheel behind the initial tire pressure value as the measured tire pressure value according to the time sequence;
the judgment module is also used for comparing the difference value between the tire pressure initial value and the tire pressure measured value with a preset threshold value so as to judge whether the moment of the forklift is normal or not;
and the display module is used for receiving and outputting the judgment result sent by the judgment module.
2. The monitoring system of claim 1, further comprising a communication module configured to send the determination result to a remote monitoring device.
3. The monitoring system of claim 1, wherein the preset threshold comprises a first threshold, a second threshold and a third threshold which are sequentially increased, and the judging module is configured to judge a size relationship between a difference value between the initial tire pressure value and the measured tire pressure value and the first threshold, the second threshold and the third threshold; if the difference value is smaller than or equal to the first threshold value, the judging module is used for judging that the moment of the forklift is in a low moment state; if the difference value is larger than the first threshold value and smaller than or equal to the second threshold value, the judging module is used for judging that the moment of the forklift is in a medium moment state; if the difference value is larger than the second threshold value and smaller than or equal to the third threshold value, the judging module is used for judging that the moment of the forklift is in a high moment state; and if the difference value is larger than the third threshold value, the judgment module is used for judging that the moment of the forklift is in a dangerous moment state.
4. The monitoring system of claim 3, wherein when the determining module determines that the moment of the forklift is a dangerous moment state, the determining module is further configured to send a signal corresponding to a decrease in the power of the fork to a control system of the forklift, and the control system of the forklift is configured to decrease the power of the fork according to the signal corresponding to the decrease in the power of the fork until the fork stops operating.
5. The monitoring system of claim 1, wherein the display module comprises a display screen, a voice player and a warning light, the display screen is used for displaying characters corresponding to the judgment result, the voice player is used for playing voice corresponding to the judgment result, and the warning light is used for displaying light colors corresponding to the judgment result.
6. The system of claim 1, wherein the number of the tire pressure monitoring modules and the number of the rear wheels of the forklift are two, and the two tire pressure monitoring modules are respectively used for monitoring the tire pressure of one of the rear wheels.
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| CN202021949931.3U CN212532235U (en) | 2020-09-08 | 2020-09-08 | Monitoring system of balance weight type forklift |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111908391A (en) * | 2020-09-08 | 2020-11-10 | 上海市特种设备监督检验技术研究院 | Monitoring system and monitoring method for balance weight type forklift |
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2020
- 2020-09-08 CN CN202021949931.3U patent/CN212532235U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111908391A (en) * | 2020-09-08 | 2020-11-10 | 上海市特种设备监督检验技术研究院 | Monitoring system and monitoring method for balance weight type forklift |
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