A special vehicle winding drum safety protection device, winding drum and safety protection method

Abstract

The application discloses a kind of reel safety protection device of special vehicle, reel and safety protection method, belong to special vehicle technical field.Therein, reel safety protection device includes at least two proximity switches, control unit, reel in place indicating device, gearbox control module and reel control module, the proximity switch is arranged on reel support, and proximity switch, reel in place indicating device, gearbox control module and reel control module are electrically connected with control unit;The reel utilizes the safety protection device to carry out safety protection;Further, the method for utilizing the safety protection device to carry out safety protection is proposed.The application can be in when operator does not lock reel in place, in time protection is carried out, and operator is prompted in time to lock reel, to avoid the occurrence of safety accident caused by reel not being limited.

Description

Technical Field

[0001] This invention belongs to the field of special vehicle technology, specifically relating to a drum safety protection device, drum, and safety protection method for special vehicles. Background Technology

[0002] Some special vehicles, such as rock drilling rigs and cranes, are limited by the overall shape of the machine and the space of the engine, gearbox, and frame, and need to be designed to be compact. In this case, the drum (water pipe drum or cable drum) is designed to be able to rotate and fold around a fixed axis of the frame.

[0003] When the vehicle is in normal use, the reel should be retracted to one side of the vehicle body. When vehicle maintenance is required, the folding reel must be manually unfolded to expose the maintenance points, and the reel must be securely fixed before maintenance or repairs are carried out. After vehicle maintenance is completed, the reel must be retracted and locked with a locking pin to prevent it from slipping out uncontrollably. If the operator fails to effectively lock the reel at this time, the reel will be unrestrained, and when the vehicle is started for relocation or rock drilling work, it can easily cause safety accidents. For example, when the operator is rewinding or unwinding water pipes or cables from the reel, the uncontrolled direction of the reel's output may crush the pipes or cables. At the same time, when moving, the reel may scrape against the surrounding rock walls, causing damage to the vehicle's mechanical structure and, in severe cases, injury or death to the operator.

[0004] However, existing special vehicles equipped with folding drums lack effective protective measures to prevent accidents. Therefore, it is necessary to study this issue in order to avoid safety accidents. Summary of the Invention

[0005] Technical Problem: For some special vehicles equipped with folding drums, operator error can easily lead to the drum failing to be effectively locked, causing safety accidents. This invention provides a drum safety protection device for special vehicles, along with a drum and a drum safety protection method. By detecting the drum's status and controlling the gearbox and drum's movement, the device alerts the operator to promptly detect when the drum is not locked, thereby effectively reducing the occurrence of safety accidents caused by the drum not being locked.

[0006] Technical solution: The special vehicle drum safety protection device of the present invention is used for safety detection of folding drums, including at least two proximity switches, a control unit, a drum position indicator, a gearbox control module and a drum control module. The proximity switches are mounted on the drum bracket, and the proximity switches, the drum position indicator, the gearbox control module and the drum control module are all electrically connected to the control unit.

[0007] Furthermore, there are two proximity switches.

[0008] Furthermore, the control unit is a PLC.

[0009] Furthermore, the positioning indicator is at least one indicator light.

[0010] The special vehicle drum of the present invention includes a drum bracket, a drum drive component and a drum body disposed on the drum bracket, a locking device disposed on the vehicle frame for locking the drum, and a safety protection device for protecting the drum. The output end of the drum drive component is connected to the drum body, so that the drum drive component drives the drum body to rotate. The safety protection device includes at least two proximity switches, a control unit, a drum position indicator, a gearbox control module and a drum control module. The proximity switches are disposed on the drum bracket, and the proximity switches, the drum position indicator, the gearbox control module and the drum control module are all electrically connected to the control unit.

[0011] Furthermore, the locking device includes a connecting part for connecting to the frame, a support and a locking part disposed on the connecting part, and a locking pin disposed on the support. A spring is sleeved on the locking pin, one end of the spring is fixed to the locking pin, and the other end is fixed to the support. A pin hole is opened on the locking part, and the locking pin can be inserted into the pin hole.

[0012] Furthermore, there are two proximity switches.

[0013] Furthermore, the control unit is a PLC.

[0014] Furthermore, the positioning indicator is at least one indicator light.

[0015] The present invention provides a method for the safety protection of a special vehicle's drum, used for the protection and control of the drum of a special vehicle, comprising:

[0016] The system detects the first position arrival signal and the second position arrival signal and sends them to the PLC. The PLC judges the drum status based on the received signals and sends control signals to the gearbox control module, the drum control module, and the indicator lights to control the gearbox, the drum, and the indicator lights to perform corresponding actions. The drum status includes: in position and locked, in position but not locked, and not in position.

[0017] Furthermore, if the PLC does not receive the first position signal and the second position signal, the PLC determines that the drum is not in position. Therefore:

[0018] The PLC sends a signal to the transmission to restrict upshifting, thus limiting the transmission from upshifting.

[0019] The PLC sends a stop signal to the drum, restricting the drum's winding and unwinding;

[0020] The PLC sends a light-on signal to the indicator light, causing the indicator light to illuminate.

[0021] Furthermore, if the PLC only receives either the first position signal or the second position signal, and the PLC determines that the drum is in position but not locked, then:

[0022] The PLC sends a signal to the transmission to prevent upshifting, thus restricting the transmission from shifting gears.

[0023] The PLC sends a release signal to the drum, allowing the drum to perform the winding and unwinding actions.

[0024] The PLC sends a flashing signal to the indicator light, causing the indicator light to flash.

[0025] Furthermore, the PLC receives the first position signal and the second position signal, and determines that the drum is in the correct position and locked. Then:

[0026] The PLC sends a signal to the transmission to lift the gear restriction, allowing the transmission to shift up.

[0027] The PLC sends a release signal to the drum, allowing the drum to perform the winding and unwinding actions.

[0028] The PLC sends a light-off signal to the indicator light, causing the indicator light to turn off.

[0029] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0030] (1) The drum safety protection device of the present invention includes at least two proximity switches, a control unit, a drum position indicator, a gearbox control module, and a drum control module. The proximity switches are mounted on the drum support. The proximity switches, the drum position indicator, the gearbox control module, and the drum control module are all electrically connected to the control unit. The proximity switches detect whether the drum is in position and send the detected signal to the PLC. Based on the received signal, the PLC sends control commands to the gearbox control module, the drum control module, and the indicator light to execute corresponding protection actions. This provides protection when the operator forgets to lock the drum, effectively reducing the occurrence of safety accidents caused by the drum not being limited.

[0031] (2) The special vehicle drum of the present invention is provided with a safety protection device on the drum support, so that the drum can be protected during use. In the process of using the drum, if the operator fails to lock the drum in place, the protection action will be performed in time and the operator will be prompted to lock the drum in time, thereby avoiding the occurrence of safety accidents caused by the drum not being limited.

[0032] (3) The drum safety protection method of the present invention uses a proximity switch to detect the first position signal and the second position signal and send them to the PLC. The PLC judges the drum status according to the received signals and sends control signals to the gearbox control module, the drum control module and the indicator light to control the gearbox, the drum and the indicator light to perform corresponding actions. When the operator fails to lock the drum in place, timely protection is provided and the operator is prompted to lock the drum in time, thereby avoiding the occurrence of safety accidents caused by the drum not being limited. Attached Figure Description

[0033] Figure 1 This is a diagram of the drum structure of a special vehicle in an embodiment of the present invention;

[0034] Figure 2 This is a diagram of the drum structure of a special vehicle in an embodiment of the present invention;

[0035] Figure 3 This is a diagram of the drum structure of a special vehicle in an embodiment of the present invention;

[0036] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0037] Figure 5 This is an electrical schematic diagram of the safety protection device in an embodiment of the present invention;

[0038] Figure 6 This is a flowchart of a security protection method in an embodiment of the present invention.

[0039] The diagram shows: 1. Drum support; 2. Drum drive unit; 3. Drum body; 4. Locking device; 5. Proximity switch; 6. Connecting part; 7. Support; 8. Locking part; 9. Locking pin; 10. Spring; 11. Locking hole. Detailed Implementation

[0040] The present invention will be further described below with reference to the embodiments and the accompanying drawings.

[0041] This invention is aimed at special vehicles equipped with folding drums, such as rock drilling rigs, and combines... Figure 1 , Figure 2 and Figure 3 As shown, the drum includes a drum support 1, a drum drive component 2 mounted on the drum support 1, a drum body 3, a locking device 4 mounted on the frame for locking the drum, and a safety protection device for protecting the drum. The output end of the drum drive component 2 is connected to the drum body 3, causing the drum drive component to drive the drum body 3 to rotate. In embodiments of the present invention, the drum drive component 2 can be an electric motor or a hydraulic motor, for example... Figure 1-3In the embodiment shown, the drum drive component 2 uses a hydraulic motor.

[0042] In practical applications, the drum support 1 is rotatably mounted on the frame of a special vehicle, allowing the entire drum to rotate around a fixed axis, thereby achieving the folding of the drum.

[0043] In an embodiment of the present invention, the safety protection device includes at least two proximity switches 5, a control unit, a drum position indicator, a gearbox control module, and a drum control module. The proximity switches 5 are mounted on the drum support 1, and the proximity switches, the drum position indicator, the gearbox control module, and the drum control module are all electrically connected to the control unit.

[0044] For example in Figure 1-3 In the embodiment shown, a total of two proximity switches 5 are provided on the drum bracket 1. The purpose is to prevent false detection caused by mechanical gaps during the installation of the folding drum. By using two proximity switches 5 as a redundancy design, it is possible to more accurately detect whether the drum is accurately limited, thereby improving safety.

[0045] The gearbox control module is mainly used to control the gearbox. When it is detected that the drum is not limited, the gearbox control module can be used to perform protective actions. The gearbox control module needs to be determined according to the type of gearbox used. For example, if a hydraulically controlled gearbox is used, the gearbox control module can use a solenoid valve to achieve the control requirements.

[0046] The drum control module can control the drum and its winding and unwinding actions. The choice of the drum control module also depends on the drive device used for the drum. For example, if a hydraulic motor drives the drum, then the drum control module can use a solenoid valve to control the drum by controlling the hydraulic oil circuit; if an electric motor drives the drum, then a motor driver can be used.

[0047] In the embodiments of the present invention, the control unit is a PLC, which can realize programmable logic control. The drum position indicator device is at least one indicator light. In general, the indicator light used in engineering can have three states: on, off, and flashing, all of which can be controlled by a PLC. In the preferred embodiment of the present invention, the requirements can be achieved using only one indicator light.

[0048] Furthermore, such as Figure 4 As shown, the locking device 4 includes a connecting part 6 for connecting to the frame, a support 7 and a locking part 8 provided on the connecting part 6, and a locking pin 9 provided on the support 7. A spring 10 is sleeved on the locking pin 9. One end of the spring 10 is fixed to the locking pin, and the other end is fixed to the support 7. A pin hole is opened on the locking part 8, and the locking pin 9 can be inserted into the pin hole.

[0049] exist Figure 1-3 In the embodiment of the structure shown, the spring 10 is a compression spring. At this time, the lower end of the compression spring is fixed to the locking pin 9, and the upper end is fixed to the support 7. When the drum needs to be locked, the locking pin 9 is pulled upward manually. The compression spring is compressed by the pressure, and the lower end of the locking pin 9 disengages from the pin hole. Then the drum support 1 is pushed into place. The drum support 1 has a locking hole 11. Then the locking pin 9 is released. Under the action of the spring force, the locking pin 9 moves downward. The lower end of the locking pin 9 passes through the locking hole 11 and inserts into the pin hole, completing the drum locking. Under the action of the spring force, the locking pin 9 will not disengage from the pin hole, ensuring that the drum is effectively locked.

[0050] To unlock the drum, pull up the locking pin 9 to extend the drum bracket 1, then release the locking pin 9, which will return to its original position. Therefore, this locking device not only facilitates locking and unlocking of the drum, but also provides a better locking effect due to the spring action.

[0051] In other embodiments, for example, Figure 1 The locking device shown is rotated 180°. When in use, the locking pin 9 is pulled down. At this time, the spring 10 is a tension spring. When the drum needs to be locked, the locking pin 9 is pulled down manually. The spring is stretched by the tension force, and the upper end of the locking pin 9 disengages from the pin hole. Then the drum bracket 1 is pushed into place, and the locking pin 9 is released. Under the action of the elastic force, the locking pin 9 moves upward. The upper end of the locking pin 9 passes through the locking hole and inserts into the pin hole, completing the drum locking. When the drum is unlocked, the locking pin 9 is pulled down, the drum bracket 1 is pulled out, and then the locking pin 9 is released, and the locking pin 9 returns to its original position.

[0052] like Figure 5 The diagram shows an electrical schematic of an embodiment of the present invention, including two proximity switches and an indicator light. In the diagram, proximity switch B1 transmits a first position signal to the PLC through port in1, and proximity switch B2 transmits a second position signal to the PLC through port in2. The PLC then makes a judgment based on the two signals and sends a corresponding control signal to indicator light H1 through port out1 to control the indicator light to operate; it also sends a corresponding control signal to drum control module C1 through port out2 to control whether the drum can perform winding and unwinding operations; and it outputs a signal to gearbox control module through port out3 to control whether the gearbox can perform upshifting operations.

[0053] The safety protection device provided by this invention can protect the drum. It uses a proximity switch to detect whether the drum is in position and sends the detection signal to the PLC. The PLC sends control commands to the gearbox control module, the drum control module and the indicator lights according to the received signal, and executes the corresponding protection actions. This protects the drum when the operator forgets to lock it, effectively reducing the occurrence of safety accidents caused by the drum not being locked.

[0054] In an embodiment of the present invention, a safety protection method for a drum equipped with two proximity switches is provided. The two proximity switches 5 are used to detect the arrival signals of two positions of the drum, namely the first position arrival signal and the second position arrival signal. The two detected arrival signals are then sent to a PLC. The PLC then judges the drum state based on the received arrival signals, including the arrival and locking state, the arrival but unlocked state, and the non-arrival state. Based on the judgment result, control signals are sent to the gearbox control module, the drum control module, and the indicator lights, thereby controlling the gearbox, the drum, and the indicator lights to perform corresponding actions. This enables vehicle protection control and provides warnings, allowing operators to detect problems in a timely manner.

[0055] Specifically, such as Figure 6 As shown, when the PLC receives the first position signal and the second position signal, and determines that the drum is in position and locked, then: the PLC sends a gear restriction release signal to the gearbox, allowing the gearbox to shift up; the PLC sends a take-up / untake signal to the drum, allowing the drum to take-up / untake action; the PLC sends an indicator light extinguishing signal to the indicator light, turning off the indicator light.

[0056] When the PLC does not receive the first position signal and the second position signal, the PLC determines that the drum is not in position. The PLC then sends a limit upshift signal to the gearbox to restrict upshifting; the PLC sends a prohibition on winding and unwinding signal to the drum to restrict winding and unwinding; and the PLC sends an indicator light signal to the indicator light to illuminate.

[0057] When the PLC receives only the first position signal or the second position signal, the PLC determines that the drum is in position but not locked. The PLC then sends a prohibition signal to the gearbox to restrict the gearbox from shifting up; the PLC sends an unlock signal to the drum to allow the drum to perform winding and unwinding actions; and the PLC sends a flashing signal to the indicator light to make the indicator light flash.

[0058] For example, in an embodiment of the present invention, utilizing Figure 5The electrical principle illustrated is as follows: When the operator shifts the gearbox upshift, the PLC receives the upshift signal GEAR_ADD. The PLC then sends a command to the proximity switch, which begins detecting the first and second position completion signals. Following the method described above, if the PLC receives both signals, it determines the drum is in position and locked, and sends an unlock signal to the gearbox control module, allowing the gearbox to shift up. If the PLC does not receive either signal, it determines the drum is not in position and sends an upshift restriction signal to the gearbox control module, restricting upshifting. If the PLC receives only one signal or the second signal, it determines the drum is in position but not locked, and sends an upshift prohibition signal to the gearbox, restricting upshifting.

[0059] When the operator operates the reel to wind up or unwind, the PLC receives the reel-up input signal REEL_IN or the reel-out input signal REEL_OUT. The PLC then sends a command to the proximity switch. The proximity switch begins detecting the first and second position arrival signals. Following the method described above, if the PLC receives both signals, it determines the reel is in position and locked, and sends an unlock signal to the reel control module, allowing the reel to wind up or unwind. If the PLC does not receive either signal, it determines the reel is not in position and sends a prohibit signal to the reel control module, restricting wind up or unwind. If the PLC receives only either the first or second signal, it determines the reel is in position but not locked, and sends a prohibit signal to the gearbox, allowing the reel to wind up or unwind.

[0060] When the PLC determines that the drum is in position but locked, it sends an "off" signal to the indicator light, turning it off. When the PLC determines that the drum is not in position, it sends an "on" signal to the indicator light, turning it on. When the PLC determines that the drum is in position but not locked, it sends a "blink" signal to the indicator light, causing it to flash. If the indicator light is on or flashing, it indicates that the drum is not locked in position, prompting the operator to lock it promptly.

[0061] The control method of this invention enables timely safety protection actions when the operator forgets to lock the drum, thereby effectively reducing the occurrence of safety accidents caused by the drum not being locked.

[0062] The above embodiments are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several improvements and equivalent substitutions without departing from the principle of the present invention. All such improvements and equivalent substitutions to the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A safety protection device for a special vehicle's reel, used for safety detection of a folding reel, characterized in that, The system includes at least two proximity switches, a control unit, a drum position indicator, a gearbox control module, and a drum control module. The proximity switches are mounted on the drum support. All three components—the proximity switches, the drum position indicator, the gearbox control module, and the drum control module—are electrically connected to the control unit. Two proximity switches are redundantly positioned at different locations on the drum support to eliminate false detections caused by mechanical backlash. These two proximity switches detect whether the drum is in position. The control unit is a PLC, and the drum position indicator is at least one indicator light. The proximity switches detect a first position position signal and a second position position signal and send them to the PLC. The PLC determines the drum state based on the received signals and sends control signals to the gearbox control module, the drum control module, and the indicator light to control the gearbox, the drum, and the indicator light to perform corresponding actions. The drum state includes: in position and locked, in position but unlocked, and not in position.

2. A drum for a special vehicle, characterized in that, The device includes a drum support, a drum drive component and a drum body mounted on the drum support, a locking device mounted on the frame for locking the drum, and a drum safety protection device for protecting the drum. The output end of the drum drive component is connected to the drum body, so that the drum drive component drives the drum body to rotate. The drum safety protection device adopts the drum safety protection device for a special vehicle as described in claim 1.

3. The drum for a special vehicle according to claim 2, characterized in that, The locking device includes a connecting part for connecting to the frame, a support and a locking part disposed on the connecting part, and a locking pin disposed on the support. A spring is sleeved on the locking pin, one end of the spring is fixed to the locking pin, and the other end is fixed to the support. A pin hole is opened on the locking part, and the locking pin can be inserted into the pin hole.

4. A method for protecting the drum of a special vehicle, comprising employing a drum safety protection device for a special vehicle as described in claim 1, for protecting and controlling the drum of the special vehicle, characterized in that, include: The system detects the first position arrival signal and the second position arrival signal and sends them to the PLC. The PLC judges the drum status based on the received signals and sends control signals to the gearbox control module, the drum control module, and the indicator lights to control the gearbox, the drum, and the indicator lights to perform corresponding actions. The drum status includes: in position and locked, in position but not locked, and not in position.

5. The method for protecting the drum of a special vehicle according to claim 4, characterized in that, If the PLC does not receive the first position completion signal and the second position completion signal, and the PLC determines that the drum is not in the correct position, then: The PLC sends a signal to the transmission control module to restrict upshifting, thus limiting the transmission from upshifting. The PLC sends a prohibition signal to the drum control module to restrict the winding and unwinding of the drum. The PLC sends a light-up signal to the indicator light, causing the indicator light to illuminate.

6. The method for protecting the drum of a special vehicle according to claim 4, characterized in that, If the PLC only receives either the first position signal or the second position signal, and determines that the drum is in position but not locked, then: The PLC sends a signal to the transmission control module to prohibit upshifting, thus restricting the transmission from upshifting. The PLC sends a signal to the drum control module to enable the winding and unwinding action of the drum. The PLC sends a flashing signal to the indicator light, causing the indicator light to flash.

7. The method for protecting the drum of a special vehicle according to claim 4, characterized in that, The PLC receives the first position signal and the second position signal, determines that the drum is in position and locked, then: The PLC sends a signal to the transmission control module to unlock the gear position restriction, allowing the transmission to shift up. The PLC sends a signal to the drum control module to enable the winding and unwinding action of the drum. The PLC sends a light-off signal to the indicator light, causing the indicator light to turn off.

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