Control System of Guardrail Cleaning Mechanism and Guardrail Cleaning Vehicle

Abstract

The present invention relates to a control system for a guardrail cleaning mechanism and a guardrail cleaning vehicle. The control system includes: an extension branch, and the extension branch includes: a first self-locking circuit, the input end of the first self-locking circuit is connected to a power supply; a first trigger unit, the normally closed point of the first trigger unit is connected to the swing arm extension reversing valve of the guardrail cleaning mechanism; a first time relay, the normally closed point of the first time relay is connected to the outer rolling brush extension reversing valve of the guardrail cleaning mechanism; a second trigger unit, the second trigger unit is used to disconnect the normally closed point of the second trigger unit when the outer rolling brush of the guardrail cleaning mechanism is sensed; a first relay, the output unit of the first relay is connected to the outer rolling brush lifting valve of the guardrail cleaning mechanism. There is no need to manually operate the extension action of the guardrail cleaning mechanism, solving the problems of frequent manual operation, low efficiency and easy error.

Description

Technical Field

[0001] The present application relates to the technical field of sanitation equipment, and in particular to a guardrail cleaning mechanism control system and a guardrail cleaning vehicle. Background Art

[0002] Guardrail cleaning vehicles are mainly used for guardrail cleaning and urban road isolation guardrail cleaning. They can also be used to clean industrial drainage pipes, wall surfaces, urban road isolation guardrails, and walls on both sides of the road. At present, the cleaning mechanism of environmental protection equipment guardrail cleaning vehicles is divided into three parts: ① Preparatory work before cleaning: first extend and lower the swing arm mechanism, then extend the outer roller brush assembly, and finally rotate the outer roller brush backward. Each step is operated independently. ② Cleaning process operation: move the whole vehicle close to the isolation guardrail, make the inner roller brush close to the guardrail, and make the longitudinal axis of the vehicle parallel to the guardrail, then lower the outer roller brush, retract the outer roller brush, make the outer roller brush close to the guardrail, turn on the roller brush rotation and high-pressure (or low-pressure) water spray. The vehicle drives along the guardrail to start the guardrail cleaning operation until the guardrail cleaning is completed, turn off the roller brush rotation and high- and low-pressure waterways, extend the outer roller brush outward, rotate the outer roller brush backward, and drive the vehicle away from the guardrail. ③After the vehicle leaves the guardrail and returns to the parking lot, retract the cleaning mechanism: rotate and lower the raised outer roller brush, retract the outer roller brush inward, and finally retract the swing arm inward and upward. From the above operation process, it can be seen that each action of the entire cleaning operation is operated separately, with many manual operation steps, the process is very cumbersome, inefficient, and prone to errors. Summary of the invention

[0003] In view of the above problems, the present application provides a guardrail cleaning mechanism control system and a guardrail cleaning vehicle to solve the problems of frequent manual operation, low efficiency and easy errors in the guardrail cleaning mechanism of the existing guardrail cleaning vehicle.

[0004] To achieve the above purpose, the inventor provides a guardrail cleaning mechanism control system, comprising:

[0005] The extended branch includes:

[0006] A first self-locking circuit, wherein an input end of the first self-locking circuit is connected to a power supply, and the first self-locking circuit is used to output a working power supply when triggered;

[0007] A first trigger unit, wherein the input end of the first trigger unit is connected to the output end of the first self-locking circuit, the normally closed point of the first trigger unit is connected to the swing arm extension reversing valve of the guardrail cleaning mechanism, and the first trigger unit is used to be triggered when the swing arm of the guardrail cleaning mechanism is extended to a preset position, at which time the normally closed point of the first trigger unit is disconnected and the first normally open point of the first trigger unit is closed;

[0008] A first time relay, wherein the input end of the first time relay is connected to the first normally open point of the first trigger unit, the normally closed point of the first time relay is connected to the outer roller brush extension reversing valve of the guardrail cleaning mechanism, and the first time relay is used to start timing when the first normally open point of the first trigger unit is closed, and when the first preset time is reached, the normally closed point of the first time relay is disconnected and the normally open point of the first time relay is closed;

[0009] A second trigger unit, wherein the input end of the second trigger unit is connected to the output end of the first self-locking circuit, and the second trigger unit is used to connect the normally open point of the second trigger unit when the outer roller brush of the guardrail cleaning mechanism is sensed;

[0010] The first relay, the control end of the first relay is connected to the normally open point of the second trigger unit, the input end of the first relay is connected to the normally open point of the first time relay, and the output end of the first relay is connected to the outer roller brush lifting valve of the guardrail cleaning mechanism.

[0011] Further optimization also includes:

[0012] A retraction branch, the retraction branch comprising:

[0013] A second self-locking circuit, wherein an input end of the second self-locking circuit is connected to a power supply, and the second self-locking circuit is used to output a working power supply when triggered;

[0014] A third trigger unit, wherein the input end of the third trigger unit is connected to the output end of the second self-locking circuit, and the third trigger unit is used to connect the normally open point of the third trigger unit when the outer roller brush of the guardrail cleaning mechanism is sensed;

[0015] A second relay, wherein a control end of the second relay is at a normally closed point of the third trigger unit, an input end of the second relay is connected to an output end of the second self-locking circuit, and a normally closed point of the second relay is connected to an outer roller brush lowering valve of a guardrail cleaning mechanism;

[0016] A second time relay, wherein the control end of the second time relay is connected to the normally open point of the second relay through the normally open point of the second relay, the input end of the second time relay is connected to the second normally open point of the first trigger unit, and the normally closed point of the second time relay is connected to the outer roller brush retraction valve;

[0017] A fourth trigger unit, wherein the input end of the fourth trigger unit is connected to the output end of the second self-locking circuit, and the fourth trigger unit is used to be triggered when the swing arm of the guardrail cleaning mechanism is retracted to the original position, at which time the normally closed point of the fourth trigger unit is disconnected;

[0018] The third relay, the control end of the third relay is connected to the normally closed point of the fourth trigger unit through the normally open point of the second time relay, the input end of the third relay is connected to the normally closed point of the fourth trigger unit, and the normally open point of the third relay is connected to the swing arm retraction valve.

[0019] Further optimized, the first self-locking circuit includes a first self-reset switch and a first self-locking relay,

[0020] The input end of the first self-resetting switch is connected to the power supply, and the input end of the first self-resetting switch is connected to the control end of the first self-locking relay;

[0021] The input end of the normally open point of the first self-locking relay is connected to the power supply through the second normally closed point of the first relay;

[0022] The second self-locking circuit includes a second self-resetting switch and a second self-locking relay;

[0023] The input end of the second self-resetting switch is connected to the power supply, and the input end of the second self-resetting switch is connected to the control end of the second self-locking relay;

[0024] The input end of the normally open point of the second self-locking relay is connected to the power supply through the second normally closed point of the fourth trigger unit.

[0025] Further optimized, the input end of the normally open point of the first self-latching relay is connected to the power supply through the second normally closed point of the first relay and the normally closed point of the second self-latching relay;

[0026] The input end of the normally open point of the second self-latching relay is connected to the power supply through the second normally closed point of the fourth trigger unit and the normally closed point of the first self-latching relay.

[0027] Further optimized, the first self-locking circuit also includes a third time relay, the control end of the third time relay is connected to the normally open point output end of the first self-locking relay, the normally closed point input end of the third time relay is connected to the normally open point output end of the first self-locking relay, and the normally closed point output end of the third time relay outputs the working power supply;

[0028] The second self-locking circuit also includes a fourth time relay, the control end of the fourth time relay is connected to the normally open point output end of the second self-locking relay, the normally closed point input end of the fourth time relay is connected to the normally open point output end of the second self-locking relay, and the normally closed point output end of the fourth time relay outputs the working power supply.

[0029] Further optimization also includes an avoidance electronic control branch, and the avoidance electronic control branch includes:

[0030] A pressure switch, wherein the input end of the pressure switch is connected to the working power supply, and the pressure switch is used to detect the oil pressure of the hydraulic oil circuit, and when the oil pressure of the hydraulic oil circuit reaches a preset pressure value, the output end outputs a trigger signal;

[0031] A third self-latching relay, wherein a control end of the third self-latching relay is connected to an output end of the pressure switch, and one end of a normally open point of the third self-latching relay is connected to a working power supply;

[0032] A fifth time relay, wherein the control end of the fifth time relay passes through the other end of the normally open point of the third self-locking relay;

[0033] A first reversing relay, wherein the control end of the first reversing relay is connected to the other end of the third self-locking relay through the normally closed point of the fifth time relay, one end of the normally closed point of the first reversing relay is connected to the output end of the first self-locking circuit, the other end of the normally closed point of the first reversing relay is connected to the input end of the first trigger unit and the input end of the second trigger unit, one end of the normally open point of the first reversing relay is connected to the output end of the second self-locking circuit, and the other end of the normally open point of the first reversing relay is connected to the input end of the third trigger unit and the input / output end of the fourth trigger unit;

[0034] A second reversing relay, the control end of the second reversing relay is connected to the other end of the third self-locking relay through the normally closed point of the fifth time relay, one end of the normally closed point of the second reversing relay is connected to the output end of the second self-locking circuit, the other end of the normally closed point of the second reversing relay is connected to the input end of the third trigger unit and the input end of the fourth trigger unit, one end of the normally open point of the second reversing relay is connected to the output end of the first self-locking circuit, and the other end of the normally open point of the second reversing relay is connected to the input end of the first trigger unit and the input and output ends of the second trigger unit.

[0035] Further optimization, the extending branch and the retracting branch are connected to the working power supply through the normally open point of the main relay.

[0036] Further optimization includes a low temperature temperature control switch and / or a high temperature temperature control switch and / or a hydraulic level switch and / or an emergency stop switch;

[0037] The control end of the main relay is connected to the working power supply through a low-temperature temperature control switch and / or a high-temperature temperature control switch and / or a hydraulic level switch and / or an emergency stop switch.

[0038] Further optimization also includes a voice reminder module and / or a video monitoring module.

[0039] Further optimization, the first trigger unit and the fourth trigger unit are both travel switches.

[0040] Further optimization, the second trigger unit and the third trigger unit are both proximity switches.

[0041] Further optimized, the output end of the extension branch is connected to the overflow valve of the guardrail cleaning mechanism through a first diode;

[0042] The output end of the retracting branch is connected to the overflow valve of the guardrail cleaning mechanism through a second diode.

[0043] For further optimization, fuses are provided on both the extending branch and the retracting branch.

[0044] Another technical solution is also provided: a guardrail cleaning vehicle, including a guardrail cleaning mechanism and a control system;

[0045] The guardrail cleaning mechanism includes a swing arm cylinder, a base, a swing arm, an outer roller brush telescopic cylinder, a movable plate, an outer roller brush rotating frame, an outer roller brush rotating lifting cylinder, an outer roller brush and an inner roller brush;

[0046] One end of the swing arm is hingedly arranged on the base, one end of the swing arm oil cylinder is connected to the base, and the other end of the swing arm oil cylinder is connected to the swing arm, and the swing arm oil cylinder is used to drive the swing arm to extend or retract;

[0047] The outer roller brush is arranged on the movable plate through the outer roller brush rotating frame, and the outer roller brush rotating lifting cylinder is used to drive the outer roller brush to rotate or lower through the outer roller brush rotating frame;

[0048] The outer roller brush telescopic oil cylinder is arranged at the other end of the swing arm, and the outer roller brush telescopic oil cylinder is connected to the movable plate, and the outer roller brush telescopic oil cylinder is used to drive the movable plate to telescope;

[0049] The inner roller brush is arranged at the other end of the swing arm;

[0050] The control system is the guardrail cleaning mechanism control system described above.

[0051] Different from the prior art, the above technical solution, when the guardrail cleaning mechanism needs to extend, the guardrail cleaning mechanism is triggered to extend through the first self-locking circuit. When the first self-locking circuit is triggered, the first self-locking circuit outputs a working power supply. Since the normally closed point of the first trigger unit is in a closed state at this time, the swing arm extension reversing valve works, and the swing arm cylinder of the guardrail cleaning mechanism drives the swing arm to extend. When the swing arm of the guardrail cleaning mechanism is extended to a preset position, the first trigger unit is triggered. This time the normally closed point of the first trigger unit is disconnected, the swing arm extension reversing valve stops working, and the swing arm of the guardrail cleaning mechanism stops extending. At this time, the second normally open point of the first trigger unit is closed, and the input end of the first time relay is connected to the output end of the first self-locking circuit through the first normally open point of the first trigger unit, and the first time relay starts working. The normally closed point of the first time relay is closed, the outer roller brush extension reversing valve of the guardrail cleaning mechanism works, and the outer roller brush telescopic cylinder of the guardrail cleaning mechanism works, driving the outer roller brush to extend outward. When the first time relay reaches the preset time, the normally closed point of the first time relay is disconnected, and at the same time, the normally open point of the first time relay is closed, and the outer roller brush rotation lifting valve works, and the outer roller brush is driven to rotate and lift through the outer roller brush rotation lifting cylinder. When the outer roller brush is rotated and the second trigger unit is triggered, the normally closed point of the second trigger unit is disconnected, and the first relay stops working. The normally closed point of the first relay is disconnected, and the outer roller brush rotation lifting valve stops working, completing the rotation of the outer roller brush. One-touch operation of multi-level actions can be achieved through the extension branch; there is no need to manually operate the extension action of the guardrail cleaning mechanism, which solves the problems of frequent manual operation, low efficiency and easy errors.

[0052] The above-mentioned records related to the invention content are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation mode and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present application and other related contents, and shall not be considered as limitations of the present application.

[0054] In the drawings of the specification:

[0055] Figure 1 A circuit schematic diagram of the control system of the guardrail cleaning mechanism described in the specific implementation method;

[0056] Figure 2 A circuit schematic diagram of the control system of the guardrail cleaning mechanism described in the specific implementation method;

[0057] Figure 3 It is a schematic structural diagram of the guardrail cleaning mechanism described in the specific implementation manner;

[0058] Figure 4 It is a schematic structural diagram of the initial state of the guardrail cleaning mechanism described in the specific implementation manner;

[0059] Figure 5 It is a schematic structural diagram of the state where the swing arm of the guardrail cleaning mechanism described in the specific implementation manner is lowered in place;

[0060] Figure 6 It is a schematic structural diagram of the state where the outer rolling brush of the guardrail cleaning mechanism described in the specific implementation manner extends in place;

[0061] Figure 7 It is a schematic structural diagram of the state where the outer rolling brush of the guardrail cleaning mechanism described in the specific implementation manner rotates and lifts in place.

[0062] The description of the reference numerals involved in the above-mentioned respective drawings is as follows:

[0063] 1. First trigger unit, 2. Swing arm oil cylinder, 3. Base, 4. Fourth trigger unit, 5. Swing arm, 6. Outer rolling brush telescopic oil cylinder, 7. Second trigger unit, 8. Movable plate, 9. Outer rolling brush rotating frame, 10. Outer rolling brush rotating and lifting oil cylinder, 11. Third trigger unit, 12. Outer rolling brush, 13. Inner rolling brush; 14. First fuse, 15. First self-resetting switch, 16. First self-locking relay, 17. Third time relay, 18. Swing arm extension reversing valve, 19. First time relay, 20. Outer rolling brush extension reversing valve, 21. First relay, 22. Diode, 23. Outer rolling brush rotation and lifting valve, 24. Relief valve, 25. Second fuse, 26. Second self-resetting switch, 27. Second self-locking relay, 28. Fourth time relay, 29. Second relay, 30. Outer rolling brush lowering valve, 31. Second time relay, 32. Outer rolling brush retracting valve, 33. Third relay, 34. Swing arm contraction valve, 35. Pressure switch, 36. Third self-locking relay, 37. Fifth time relay, 38. First reversing relay, 39. Second reversing relay; 40. Main relay, 41. Low-temperature temperature control switch, 42. High-temperature temperature control switch, 43. Hydraulic liquid level switch, 44. Emergency stop switch, 45. Heating relay, 46. Heater, 47. Cooling relay, 48. Cooler, 49. Voice alarm, 50. Speaker, 51. Video monitor, 52. Camera, 53. Power indicator light. Specific implementation manner

[0064] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0065] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0066] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0067] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0068] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0069] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0070] In this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0071] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0072] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0073] See also Figure 1-2 , this embodiment provides a guardrail cleaning mechanism control system, including:

[0074] The extended branch includes:

[0075] A first self-locking circuit, wherein an input end of the first self-locking circuit is connected to a power supply, and the first self-locking circuit is used to output a working power supply when triggered;

[0076] A first trigger unit 1, wherein the input end of the first trigger unit 1 is connected to the output end of the first self-locking circuit, the normally closed point of the first trigger unit 1 is connected to the swing arm extension reversing valve 18 of the guardrail cleaning mechanism, and the first trigger unit 1 is used to be triggered when the swing arm 5 of the guardrail cleaning mechanism is extended to a preset position, at which time the normally closed point of the first trigger unit 1 is disconnected, and the first normally open point of the first trigger unit 1 is closed;

[0077] The first time relay 19, the input end of the first time relay 19 is connected to the first normally open point of the first trigger unit 1, the normally closed point of the first time relay 19 is connected to the outer roller brush extension reversing valve 20 of the guardrail cleaning mechanism, and the first time relay 19 is used to start timing when the first normally open point of the first trigger unit 1 is closed, and when the first preset time is reached, disconnect the normally closed point of the first time relay 19 and close the normally open point of the first time relay 19;

[0078] The second trigger unit 7, the input end of the second trigger unit 7 is connected to the output end of the first self-locking circuit, and the second trigger unit 7 is used to connect the normally open point of the second trigger unit 7 when the outer roller brush 12 of the guardrail cleaning mechanism is sensed;

[0079] The first relay 21, the control end of the first relay 21 is connected to the normally open point of the second trigger unit 7, the input end of the first relay 21 is connected to the normally open point of the first time relay 19, and the output unit of the first relay 21 is connected to the outer roller brush lifting valve 23 of the guardrail cleaning mechanism.

[0080] Please refer to Figure 3-7, when the guardrail cleaning mechanism needs to perform an extension operation, the first self-locking circuit is triggered to perform the extension operation of the guardrail cleaning mechanism. When the first self-locking circuit is triggered, the first self-locking circuit outputs the working power supply. Since the normally closed point of the first trigger unit 1 is in the closed state at this time, the swing arm extension reversing valve 18 works, and the swing arm oil cylinder 2 of the guardrail cleaning mechanism drives the swing arm 5 to extend. When the swing arm 5 of the guardrail cleaning mechanism extends to the preset position, the first trigger unit 1 is triggered. At this time, the normally closed point of the first trigger unit 1 is disconnected, and the swing arm extension reversing valve 18 stops working after reaching the position. At this time, the swing arm 5 of the guardrail cleaning mechanism stops extending; at the same time, the second normally open point of the first trigger unit 1 is closed, and the input end of the first time relay 19 is connected to the output end of the first self-locking circuit through the first normally open point of the first trigger unit 1. The first time relay 19 starts to work, and the normally closed point of the first time relay 19 is closed. The outer roller brush extension reversing valve 20 of the guardrail cleaning mechanism works, and the outer roller brush telescopic oil cylinder 6 of the guardrail cleaning mechanism works, driving the outer roller brush 12 to extend outwards. When the first time relay 19 reaches the preset time, the normally closed point of the first time relay 19 is disconnected, and at the same time, the normally open point of the first time relay 19 is closed, then the outer roller brush rotation and lifting valve 23 works, driving the outer roller brush 12 to rotate and lift through the outer roller brush rotation and lifting oil cylinder 10. When the outer roller brush 12 rotates and lifts and triggers the second trigger unit 7, the normally open point of the second trigger unit 7 is connected, then the first relay 21 stops working, and the normally closed point of the first relay 21 is disconnected, then the outer roller brush rotation and lifting valve 23 stops working, completing the rotation and lifting of the outer roller brush 12. Through the extension branch, one-key operation of multi-stage actions can be realized; there is no need to manually operate the extension action of the guardrail cleaning mechanism, solving the problems of frequent manual operation, low efficiency and easy error. Under the condition of ensuring driving and operation safety, reduce operations as much as possible, especially before and after operations, realize the automation and intelligence of mechanical actions, can significantly reduce manual operation actions, and reduce the labor intensity of the driver.

[0081] Please refer to Figure 1 , in some embodiments, it further includes:

[0082] A retraction branch, and the retraction branch includes:

[0083] A second self-locking circuit, the input end of the second self-locking circuit is connected to the power supply, and the second self-locking circuit is used to output the working power supply when triggered;

[0084] A third trigger unit 11, the input end of the third trigger unit 11 is connected to the output end of the second self-locking circuit, and the third trigger unit 11 is used to connect the normally open point of the third trigger unit 11 when detecting the outer roller brush 12 of the guardrail cleaning mechanism;

[0085] The second relay 29, the control terminal of the second relay 29 is at the normally open point of the third trigger unit 11, the input terminal of the second relay 29 is connected to the output terminal of the second self-locking circuit, and the normally closed point of the second relay 29 is connected to the outer roller brush lowering valve 30 of the guardrail cleaning mechanism;

[0086] The second time relay 31, the control terminal of the second time relay 31 is connected to the second normally open point of the first trigger unit 1 through the normally open point of the second relay 29, the input terminal of the second time relay 31 is connected to the normally open point of the second relay, and the normally closed point of the second time relay 31 is connected to the outer roller brush retracting valve 32;

[0087] The fourth trigger unit 4, the input terminal of the fourth trigger unit 4 is connected to the output terminal of the second self-locking circuit, and the fourth trigger unit 4 is triggered when the swing arm 5 of the guardrail cleaning mechanism retracts to the original position. At this time, the normally closed point of the fourth trigger unit 4 is disconnected;

[0088] The third relay 33, the control terminal of the third relay 33 is connected to the normally closed point of the fourth trigger unit 4 through the normally open point of the second time relay 31, the input terminal of the third relay 33 is connected to the normally closed point of the fourth trigger unit 4, and the normally open point of the third relay 33 is connected to the swing arm contraction valve 34.

[0089] Please refer to Figure 3-7, when the guardrail cleaning mechanism needs to retract, it is triggered by the second self-locking circuit to perform the retraction operation. When the second self-locking circuit is triggered, the second self-locking circuit outputs the working power supply. Since the normally closed point of the second relay 29 is in the closed state, the outer roller brush lowering valve 30 works, and the outer roller brush 12 is driven to lower by the outer roller brush rotary lifting oil cylinder 10. When the third trigger unit 11 is triggered when the outer roller brush 12 rotates and lifts, the normally open point of the third trigger unit 11 is turned on, then the normally closed point of the second relay 29 is disconnected and the normally open point of the second relay 29 is closed, so the outer roller brush lowering valve 30 stops working. At this time, since the first trigger unit 1 is still in the triggered state, the second normally open point of the first trigger unit 1 is in the closed state, and the normally open point of the second relay 29 is closed, then the second time relay 31 starts to work. The normally closed point of the second time relay 31 is closed, so the outer roller brush retraction valve 32 works, and the outer roller brush 12 is driven to retract by the outer roller brush 12 oil cylinder. During the process of the outer roller brush 12 retracting, when the second time relay 31 reaches the preset time, the normally closed point of the second time relay 31 is disconnected, and the outer roller brush retraction valve 32 stops working, and the outer roller brush 12 stops retracting; at the same time, the normally open point of the second time relay 31 is closed, the normally closed point of the fourth trigger unit 4 at this time is closed, and the normally open point of the third relay 33 is closed at this time, and the swing arm contraction valve 34 works. At this time, the swing arm oil cylinder 2 drives the oil cylinder to retract. When the swing arm 5 reaches the original position and triggers the fourth trigger unit 4, the normally closed point of the fourth trigger unit 4 is disconnected, then the swing arm contraction valve 34 stops working, and the oil cylinder stops retracting. There is no need to manually operate the retraction action of the guardrail cleaning mechanism, solving the problems of frequent manual operation, low efficiency and easy error.

[0090] In some embodiments, the first self-locking circuit includes a first self-resetting switch 15 and a first self-locking relay 16.

[0091] The input end of the first self-resetting switch 15 is connected to the power supply, and the input end of the first self-resetting switch 15 is connected to the control end of the first self-locking relay 16;

[0092] The input end of the normally open point of the first self-locking relay 16 is connected to the power supply through the second normally closed point of the first relay 21;

[0093] The second self-locking circuit includes a second self-resetting switch 26 and a second self-locking relay 27;

[0094] The input end of the second self-resetting switch 26 is connected to the power supply, and the input end of the second self-resetting switch 26 is connected to the control end of the second self-locking relay 27;

[0095] The input end of the normally open point of the second self-locking relay 27 is connected to the power supply through the second normally closed point of the fourth trigger unit 4.

[0096] When the first self-resetting switch 15 in the first self-locking circuit is triggered, the first self-resetting switch 15 emits an excitation signal, causing the first self-locking relay 16 to operate. The self-locking of the first self-locking relay 16 enables the first self-locking circuit to output a working power supply. When the outer rolling brush 12 finishes its lifting operation, the second normally closed point of the first relay 21 disconnects, and the first self-locking circuit stops working, thus disconnecting the working power supply output by the first self-locking circuit. Similarly, when the second self-resetting switch 26 is triggered, the second self-locking circuit outputs a working power supply, and when the swing arm 5 retracts, the second self-locking circuit stops outputting the working power supply.

[0097] In some embodiments, the input end of the normally open point of the first self-locking relay 16 is connected to the power supply through the second normally closed point of the first relay 21 and the normally closed point of the second self-locking relay 27.

[0098] The input end of the normally open point of the second self-locking relay 27 is connected to the power supply through the second normally closed point of the fourth trigger unit 4 and the normally closed point of the first self-locking relay 16.

[0099] When the first self-locking circuit is triggered, that is, when the first self-locking circuit outputs a working power supply, the normally closed point of the first self-locking disconnects, and the second self-locking circuit stops working, preventing the second self-locking circuit from outputting a working power supply due to the accidental triggering of the second self-resetting switch 26. Similarly, when the second self-locking circuit is triggered, the first self-locking circuit will not be accidentally triggered.

[0100] In some embodiments, the first self-locking circuit further includes a third time relay 17. The control end of the third time relay 17 is connected to the output end of the normally open point of the first self-locking relay 16. The input end of the normally closed point of the third time relay 17 is connected to the output end of the normally open point of the first self-locking relay 16, and the output end of the normally closed point of the third time relay 17 outputs a working power supply.

[0101] The second self-locking circuit further includes a fourth time relay 28. The control end of the fourth time relay 28 is connected to the output end of the normally open point of the second self-locking relay 27. The input end of the normally closed point of the fourth time relay 28 is connected to the output end of the normally open point of the second self-locking relay 27, and the output end of the normally closed point of the fourth time relay 28 outputs a working power supply.

[0102] When the first self-locking circuit is triggered to output the working power supply, the third time relay 17 starts to work. When the third time relay 17 reaches the preset time, the normally closed point of the third time relay 17 disconnects, and the first self-locking circuit stops outputting the working power supply. Similarly, when the second self-locking circuit is triggered to output the working power supply, the fourth time relay 28 starts to work. When the fourth time relay 28 reaches the preset time, the normally closed point of the fourth time relay 28 disconnects, and the second self-locking circuit stops outputting the working power supply.

[0103] Please refer to Figure 2 , in some embodiments, it further includes an avoidance electric control branch, and the avoidance electric control branch includes:

[0104] A pressure switch 35, the input end of the pressure switch 35 is connected to the working power supply, and the pressure switch 35 is used to detect the oil pressure of the hydraulic oil circuit. When the oil pressure of the hydraulic oil circuit reaches the preset pressure value, the output end outputs a trigger signal;

[0105] A third self-locking relay 36, the control end of the third self-locking relay 36 is connected to the output end of the pressure switch 35, and one end of the normally open point of the third self-locking relay 36 is connected to the working power supply;

[0106] A fifth time relay 37, the control end of the fifth time relay 37 passes through the other end of the normally open point of the third self-locking relay 36;

[0107] A first reversing relay 38, the control end of the first reversing relay 38 is connected to the other end of the third self-locking relay 36 through the normally closed point of the fifth time relay 37. One end of the normally closed point of the first reversing relay 38 is connected to the output end of the first self-locking circuit, and the other end of the normally closed point of the first reversing relay 38 is connected to the input end of the first trigger unit and the input end of the second trigger unit. One end of the normally open point of the first reversing relay 38 is connected to the output end of the second self-locking circuit, and the other end of the normally open point of the first reversing relay 38 is connected to the input end of the third trigger unit and the input end of the fourth trigger unit;

[0108] A second reversing relay 39, the control end of the second reversing relay 39 is connected to the other end of the third self-locking relay 36 through the normally closed point of the fifth time relay 37. One end of the normally closed point of the second reversing relay 39 is connected to the output end of the second self-locking circuit, and the other end of the normally closed point of the second reversing relay 39 is connected to the input end of the third trigger unit and the input end of the fourth trigger unit. One end of the normally open point of the second reversing relay 39 is connected to the output end of the first self-locking circuit, and the other end of the normally open point of the second reversing relay 39 is connected to the input end of the first trigger unit and the input end of the second trigger unit.

[0109] A pressure switch 35 is installed in the main oil circuit of the equipment's hydraulic system, mainly for oil circuit detection. If any action during the extension or retraction of the cleaning mechanism gets stuck, the oil pressure in the hydraulic oil circuit will instantly rise. When the pressure value in the hydraulic oil circuit rises to be greater than (or equal to) the preset pressure value set by the pressure switch 35, the electrical contacts inside the pressure switch 35 change from open to closed; when the pressure value in the hydraulic oil pipe changes from high to low and is less than the pressure value set by the pressure switch 35, the electrical contacts inside the pressure switch 35 change from closed to open. The pressure switch 35 can serve as a trigger signal circuit to trigger the self-locking circuit composed of the subsequent third self-locking relay 36 and the fifth time relay 37. This self-locking circuit drives the subsequent fifth time relay 37. The time of the fifth time relay 37 can be set to the total time of a one-way extension (or retraction). The output current is sent to the first reversing relay 38 and the second relay through the fifth time relay 37. Through two sets of contacts, the circuit is sent to one of the two reversing relays by closing or opening, and through the switching of the reversing relay circuit, the original circuit is disconnected and the current is directed to one of the circuits for reverse movement; for example, when the cleaning mechanism gets stuck during the operation of the extension branch, the first reversing relay 38 is triggered, causing the normally closed point of the first reversing relay 38 to open and the normally open point to close, making the cleaning mechanism retract. In some embodiments, an oil pressure sensor and a controller can also be used. Based on the principle that different pressures of the oil pressure sensor generate different currents, the change of the oil pressure is judged. When a jam occurs, the system is first pressurized to a fixed pressure value. After a period of pressure holding, the operation is repeated once or multiple times to cause slight vibration of the oil circuit and make the oil circuit smoother, and this technology can be used to eliminate the jams caused by the unsmoothness inside the oil circuit.

[0110] In some embodiments, the extension branch and the retraction branch are connected to the working power supply through the normally open points of the main relay 40. The working power supply first protects the extension branch and the retraction branch through a fuse, and then is connected in series with a main relay 40, so that the extension branch and the retraction branch can be controlled through the main relay 40.

[0111] In some embodiments, it further includes a low-temperature temperature control switch 41 and / or a high-temperature temperature control switch 42 and / or a hydraulic liquid level switch 43 and / or an emergency stop switch 44;

[0112] The control terminal of the main relay 40 is connected to the working power supply through the low-temperature temperature control switch 41 and / or the high-temperature temperature control switch 42 and / or the hydraulic liquid level switch 43 and / or the emergency stop switch 44.

[0113] The coil of the main relay 40 is controlled by a low-temperature temperature control switch 41, a high-temperature temperature control switch 42, a hydraulic liquid level switch 43, and an emergency stop switch 44. When detecting the temperature of the hydraulic oil in the hydraulic oil circuit through the low-temperature temperature control switch and the high-temperature temperature control switch, if the temperature of the hydraulic oil is too low, the low-temperature temperature control switch controls the main relay 40 to disconnect; while if the temperature of the hydraulic oil is too high, the high-temperature temperature control switch 42 controls the main relay 40 to disconnect. The hydraulic liquid level switch 43 detects the liquid level and pressure of the hydraulic oil in the hydraulic oil circuit. If the liquid level of the hydraulic oil is too low, the hydraulic liquid level switch 43 controls the main relay 40 to disconnect.

[0114] In some embodiments, a heating relay 45 and a heater 46 are further included. The control terminal of the heating relay 45 is connected to the working power supply through the normally open contact of the low-temperature temperature control switch 41, and the heater 46 is connected to the working power supply through the normally open contact of the heating relay 45. When the low-temperature temperature control switch 41 detects that the temperature of the hydraulic oil in the hydraulic oil circuit is too low, the normally open contact of the low-temperature temperature control switch 41 closes, the heating relay 45 works, so that the heater 46 is connected to the working power supply to heat the hydraulic oil. When the temperature reaches the preset temperature, the normally open contact of the low-temperature temperature control switch 41 disconnects, and the heater 46 disconnects from the working power supply and stops working.

[0115] In some embodiments, a cooling relay 47 and a cooler 48 are further included. The control terminal of the cooling relay 47 is connected to the working power supply through the normally open contact of the high-temperature temperature control switch 42, and the cooler 48 is connected to the working power supply through the normally open contact of the cooling relay 47. When the high-temperature temperature control switch 42 detects that the temperature of the hydraulic oil in the hydraulic oil circuit is too high, the normally open contact of the high-temperature temperature control switch 42 closes, and the cooler 48 starts to work to cool the hydraulic oil. When the temperature drops to the preset temperature, the normally open contact of the high-temperature temperature switch disconnects, and the cooler 48 disconnects from the power supply and stops working. Herein, the cooler 48 is a cooling fan.

[0116] In some embodiments, a voice reminder module and / or a video monitoring module are further included. The voice reminder module includes a voice alarm 49 and a voice speaker 50. The output terminals of the low-temperature control switch, the high-temperature control switch, the hydraulic liquid level switch 43, and the emergency stop switch are all connected to the voice alarm 49. At the same time, the output terminal of the pressure switch 35 is also connected to the voice alarm 49. The voice alarm 49 can alarm various situations through the voice speaker 50, such as too low or too high temperature of the hydraulic oil, oil leakage, and jamming of the cleaning mechanism. The video monitoring module includes a video monitor 51 and a camera 52. The camera 52 can obtain the working process of the cleaning mechanism, and the driver can monitor the working process of the cleaning mechanism through the video monitor 51.

[0117] The working power supply first passes through a fuse, which plays a role in current limiting and protecting the circuit. In the main circuit, a contact circuit of the main relay 40 is connected in series, so that the on-off of the main circuit is controlled by the main relay 40. The coil of the main relay 40 is simultaneously controlled by a low-temperature control switch, a high-temperature control switch, a hydraulic liquid level switch 43 and an emergency stop switch. The outputs of the low-temperature control switch, the high-temperature control switch, the hydraulic liquid level switch 43 and the emergency stop switch are all connected to the voice alarm 49. When any one of the switches is turned off, the main circuit power supply will be disconnected, and at the same time, a signal (which can also be a low-potential signal) will be sent to the voice alarm 49. When the voice alarm 49 receives any one of the signals, the voice alarm 49 will issue different voice reminders. If the oil temperature in winter is too low, lower than the set value, in addition to automatically cutting off the circuit and giving a voice alarm, the system will automatically start the heater 46 to heat the hydraulic oil until the oil temperature is higher than the set value, and the operating system will automatically be powered on, and the power indicator light 53 will be lit, and the operator can perform a one-key operation. If it is a high-temperature and oil leakage alarm, the voice alarm 49 will, through an independent output, delay the disconnection of the main circuit through a time relay. The purpose is that after the operator hears the voice alarm, the operator can perform the equipment recovery operation to avoid power-off during the operation when the cleaning support assembly is not retracted. The electronic control system will simultaneously start the cooler 48 to cool the hydraulic oil. When the oil temperature drops to normal (set value), the operating system will automatically be powered on, and the power indicator light 53 will be lit, and the operator can perform a one-key operation. The voice alarm 49 is also connected to the hydraulic switch of the main oil circuit. When the pressure of the hydraulic oil circuit is too high, the pressure switch 35 is turned on, and the signal is sent to the voice alarm 49 to remind the operator through voice. The driver can understand the operation conditions of each part of the equipment on the screen through the positions of multiple cameras 52. It can also be understood by playing back the monitoring video of the monitoring system. When the oil temperature is too low, the main circuit is powered off, and the electronic control system cannot be turned on. At the same time, the voice alarm is started to remind the operator to avoid damage to the equipment. During the operation of the equipment, if the oil temperature is too high (especially in summer), the relay coil circuit is disconnected, the main circuit is disconnected, and at the same time, the alarm circuit is started to remind the operator. The voice alarm 49 provides a short-time current to the main circuit relay coil, and the operator can use this time to operate the equipment to retract and stop the operation to avoid losses of the equipment or hydraulic oil. During the operation of the equipment, if there is oil leakage or the oil quantity is insufficient, the system will automatically cut off the main circuit current and remind the operator through voice. At the same time, the system will also delay for a period of time. The operator can operate the equipment to retract through a period of time. After the equipment is stopped and retracted, maintenance and refueling are carried out. If the cleaning mechanism gets stuck during the process of extending or retracting, the system will automatically move in the reverse direction back to the original position, and at the same time, the voice alarm will be started. The operator can observe the internal situation through the monitor and check the equipment to avoid damage caused by forced operation of the equipment.

[0118] In some embodiments, the first trigger unit 1 and the fourth trigger unit 4 are both travel switches. A travel switch, a type of position switch (also known as a limit switch), is a commonly used small-current master switch. It uses the collision of the moving parts of the production machinery to make its contacts act to achieve the on or off control circuit and reach a certain control purpose. In other embodiments, the first trigger unit 1 and the fourth trigger unit 4 can also use other position switches, such as proximity switches.

[0119] In some embodiments, the second trigger unit 7 and the third trigger unit 11 are both proximity switches. A proximity switch is a position switch that can be operated without mechanical direct contact with the moving parts. When the object approaches the sensing surface of the proximity switch to the operating distance, the switch can be actuated without mechanical contact and applying any pressure, thereby driving a DC electrical appliance or providing a control instruction to a computer (PLC) device. A proximity switch is a switch-type sensor (i.e., a non-contact switch). It has the characteristics of both travel switches and microswitches, and at the same time has sensing performance, reliable action, stable performance, fast frequency response, long service life, strong anti-interference ability, etc., and has the characteristics of waterproof, shockproof, corrosion-resistant, etc. The products include inductive, capacitive, Hall, AC and DC types. In other embodiments, the second trigger unit 7 and the third trigger unit 11 can also use other position switches, such as travel switches.

[0120] In some embodiments, the output end of the extending branch is connected to the overflow valve 24 of the guardrail cleaning mechanism through the first diode 22;

[0121] The output end of the retracting branch is connected to the overflow valve 24 of the guardrail cleaning mechanism through the second diode 22.

[0122] In some embodiments, fuses are provided on both the extending branch and the retracting branch. A first fuse 14 is provided on the extending branch, and a second fuse 25 is provided on the retracting branch. The fuses can protect the electrical safety of the extending branch and the retracting branch.

[0123] Please refer to Figure 1-3 , in another embodiment, a guardrail cleaning vehicle includes a guardrail cleaning mechanism and a control system;

[0124] The guardrail cleaning mechanism includes a swing arm oil cylinder 2, a base 3, a swing arm 5, an outer brush telescopic oil cylinder 6, a movable plate 8, an outer brush rotating frame 9, an outer brush rotating lifting oil cylinder 10, an outer brush 12 and an inner brush 13;

[0125] One end of the swing arm 5 is hinged to the base 3. One end of the swing arm oil cylinder 2 is connected to the base 3, and the other end of the swing arm oil cylinder 2 is connected to the swing arm 5. The swing arm oil cylinder 2 is used to drive the swing arm 5 to extend or retract;

[0126] The outer rotary brush 12 is arranged on the movable plate 8 through the outer rotary brush rotating frame 9, and the outer rotary brush rotary lifting oil cylinder 10 is used to drive the outer rotary brush 12 to rotate and lift or lower through the outer rotary brush rotating frame 9;

[0127] The outer rotary brush telescopic oil cylinder 6 is arranged at the other end of the swing arm 5. The outer rotary brush telescopic oil cylinder 6 is connected to the movable plate 8, and the outer rotary brush 12 telescopic rod is used to drive the movable plate 8 to expand and contract;

[0128] The inner rotary brush 13 is arranged at the other end of the swing arm 5;

[0129] The control system is the guardrail cleaning mechanism control system in the above embodiment.

[0130] Please refer to Figure 3-7 , when it is necessary for the guardrail cleaning mechanism to perform an extension operation, the first self-locking circuit is triggered to perform the extension operation of the guardrail cleaning mechanism. When the first self-locking circuit is triggered, the first self-locking circuit outputs the working power supply. Since the normally closed point of the first trigger unit 1 is in the closed state at this time, the swing arm extension directional valve 18 works, and the swing arm oil cylinder 2 of the guardrail cleaning mechanism drives the swing arm 5 to extend. When the swing arm 5 of the guardrail cleaning mechanism extends to the preset position, the first trigger unit 1 is triggered. At this time, the normally closed point of the first trigger unit 1 is disconnected, and the swing arm extension directional valve 18 stops working. At this time, the swing arm 5 of the guardrail cleaning mechanism stops extending; at the same time, the second normally open point of the first trigger unit 1 is closed, and the input end of the first time relay 19 is connected to the output end of the first self-locking circuit through the first normally open point of the first trigger unit 1. The first time relay 19 starts to work, the normally closed point of the first time relay 19 is closed, the outer rotary brush extension directional valve 20 of the guardrail cleaning mechanism works, and the outer rotary brush telescopic oil cylinder 6 of the guardrail cleaning mechanism works to drive the outer rotary brush 12 to extend outwards. When the first time relay 19 reaches the preset time, the normally closed point of the first time relay 19 is disconnected, and at the same time, the normally open point of the first time relay 19 is closed, then the outer rotary brush lifting valve 23 works, and the outer rotary brush 12 is driven to rotate and lift through the outer rotary brush rotary lifting oil cylinder 10. When the second trigger unit 7 is triggered when the outer rotary brush 12 rotates and lifts, the normally closed point of the second trigger unit 7 is disconnected, then the first relay 21 stops working, the normally closed point of the first relay 21 is disconnected, and the outer rotary brush lifting valve 23 stops working, completing the rotation and lifting of the outer rotary brush 12. Through the extension branch, one-key operation of multi-stage actions can be realized; there is no need to manually operate the extension action of the guardrail cleaning mechanism, solving the problems of frequent manual operation, low efficiency, and easy error. Under the condition of ensuring driving and operation safety, reduce operations as much as possible, especially before and after operations, realize the automation and intelligence of mechanical actions, can significantly reduce manual operation actions, and reduce the labor intensity of the driver.

[0131] Please refer to Figure 4-7, when the guardrail cleaning mechanism needs to perform a retraction operation, it is triggered by the second self-locking circuit to perform the retraction operation. When the second self-locking circuit is triggered, the second self-locking circuit outputs the working power supply. Since the normally closed point of the second relay 29 is in the closed state, the outer roller brush lowering valve 30 works, and the outer roller brush 12 is driven to lower by the outer roller brush rotary lifting oil cylinder 10. When the third trigger unit 11 is triggered when the outer roller brush 12 rotates and lifts, the normally closed point of the third trigger unit 11 disconnects, then the normally closed point of the second relay 29 disconnects and the normally open point of the second relay 29 closes, so the outer roller brush lowering valve 30 stops working. At this time, since the first trigger unit 1 is still in the triggered state, the second normally open point of the first trigger unit 1 is in the closed state, and the normally open point of the second relay 29 is closed, then the second time relay 31 starts to work. The normally closed point of the second time relay 31 closes, so the outer roller brush retraction valve 32 works, and the outer roller brush 12 is driven to retract by the outer roller brush 12 oil cylinder. During the retraction process of the outer roller brush 12, when the second time relay 31 reaches the preset time, the normally closed point of the second time relay 31 disconnects, and the outer roller brush retraction valve 32 stops working, and the outer roller brush 12 stops retracting; at the same time, the normally open point of the second time relay 31 closes, the normally closed point of the fourth trigger unit 4 closes at this time, and the normally open point of the third relay 33 closes, and the swing arm contraction valve 34 works. At this time, the swing arm oil cylinder 2 drives the oil cylinder to retract. When the swing arm 5 reaches the original position and the swing arm 5 triggers the fourth trigger unit 4, the normally closed point of the fourth trigger unit 4 disconnects, then the swing arm contraction valve 34 stops working, and the oil cylinder stops retracting. There is no need to manually operate the retraction action of the guardrail cleaning mechanism, solving the problems of frequent manual operation, low efficiency and easy error.

[0132] Please refer to Figure 4-7, Installation connection and movement process of the guardrail cleaning mechanism: The right travel switch SQ1 (i.e., the first trigger unit 1) is fixed on the base 3. When the swing arm 5 moves outward and downward and reaches the position, the roller of the right travel switch SQ1 can just touch the bracket of the swing arm 55, and the internal switch of the right travel switch SQ1 undergoes a conversion action. The left travel switch SQ4 (i.e., the fourth trigger unit 4) is fixed on the left side of the base 3. When the bracket of the swing arm 5 retracts to the position, the outer left part of the swing arm 5 bracket just touches the roller of the left travel switch SQ4, and the internal switch of the left travel switch SQ4 undergoes a conversion. The fixed end of the swing arm oil cylinder 2 is connected to the base 3 under the swing arm 5, and the movable end of the swing arm oil cylinder 2 is connected to the swing arm 5. When the swing arm oil cylinder 2 contracts, it drives the entire cleaning mechanism to move outward and downward until the right swing arm 5 touches the right travel switch SQ1; when the swing arm oil cylinder 2 extends to the position, it drives the entire cleaning mechanism to move inward and upward until the outer side of the left swing arm 5 just touches the left travel switch SQ4. The fixed end of the outer roller brush 12 oil cylinder is fixed on the top beam of the swing arm 5, and the movable end is fixed on the movable plate 8. The movable end of the outer roller brush 12 oil cylinder drives the movable plate 8, and the fixed end of the outer roller brush rotating frame 9 is fixed on the movable plate 8. When the outer roller brush 12 oil cylinder extends, the movable plate 8, the outer roller brush rotating frame 9, and the outer roller brush 12 all extend outward until the extension time reaches the set time (the time is determined according to the first time relay 19). When the outer roller brush 12 oil cylinder retracts, the movable end of the outer roller brush 12 oil cylinder pulls the movable plate 8, the outer roller brush rotating frame 9, the outer roller brush 12, etc. to retract together, and at the same time, the distance between the inner and outer roller brushes 12 decreases, and the retraction movement reaches the set time (the specific time is determined by the second time relay 31). The fixed end of the outer roller brush 12 rotating oil cylinder is installed on the movable plate 8, and the movable end is connected to the rotating frame of the outer roller brush 12. The outer roller brush 12 is fixed on the outer roller brush rotating frame 9. There are also an upper proximity switch (i.e., the second trigger unit 7) and a lower proximity switch (i.e., the second trigger unit 7) fixed on the movable plate 8. When the outer roller brush 12 lifting oil cylinder extends, the movable end of the outer roller brush 12 oil cylinder pushes the outer roller brush rotating frame 9 to rotate backward, and the outer roller brush rotating frame 9 drives the outer roller brush 12 to rotate backward and lift (i.e., lift). When the outer roller brush 12 lifts to the horizontal position and senses the upper proximity switch, the outer roller brush 12 lifting oil cylinder no longer extends. When the outer roller brush 12 lifting oil cylinder contracts, the movable end of the outer roller brush 12 oil cylinder pulls the outer roller brush rotating frame 9 to rotate downward and forward, and the outer roller brush rotating frame 9 drives the outer roller brush 12 to rotate downward and forward to land (i.e., lower). When the outer roller brush 12 descends to the vertical state and the outer roller brush 12 senses the lower proximity switch, the outer roller brush 12 oil cylinder no longer contracts.

[0133] Composition of the electric control system: right travel switch SQ1 (first trigger unit 1), left travel switch SQ4 (fourth trigger unit 4), upper proximity switch SQ2 (second trigger unit 7), lower proximity switch SQ3 (third trigger unit 11), fuse FU1, self - reset push - button switch SB1 (first self - reset switch 15), self - locking relay K1 (first self - locking relay 16), time relay KT1 (third time relay 17), swing arm extension reversing valve 18, time relay KT2 (first time relay 19), outer brush 12 extension reversing valve, relay K2 (first relay 21), diode 22, outer brush lifting valve 23, overflow valve 24, fuse FU2, self - reset push - button switch SB2 (second self - reset switch 26), self - locking relay K3 (second self - locking relay 27), time relay KT3 (fourth time relay 28), relay K4 (second relay 29), outer brush lowering valve 30, time relay KT4 (second time relay 31), outer brush retraction valve 32, relay K5 (third relay 33), swing arm retraction valve 34.

[0134] Please refer to Figure 4-7 , for the working process of the electric control system:

[0135] One - key extension of the upper cleaning mechanism's electric control part:

[0136] One - key extension power supply electric control part: The power supply is provided by the fuse FU1 of the extension branch. A first self - locking circuit is formed by the normally - closed contact of the first relay 21, the normally - closed contact of the second self - locking relay 27, the normally - open contact of the first self - locking relay 16, and the first self - reset switch 15. The first self - reset switch 15 emits an excitation signal to make the first self - locking circuit work. The first self - locking circuit supplies power to the third time relay 17, making the third time relay 17 work during the total time of the extension of the entire cleaning mechanism. When the time exceeds or the outer brush 12 is lifted in place and the guardrail cleaning mechanism retracts, this power circuit will be powered off.

[0137] Automatic extension and descent of the swing arm 5 mechanism: It is connected to the swing arm extension reversing valve 18 through the closed contact switch of the right travel normal switch SQ1. After being powered on, the entire cleaning mechanism moves outward and downward until the bracket of the swing arm 5 touches the right proximity switch SQ1. The extension work of the swing arm 5 ends by the disconnection of the normally - closed contact when the right travel switch SQ1 is in place. During the extension and descent of the swing arm 5, current is provided to the overflow valve 24 through the diode 22 at the same time.

[0138] Outer rolling brush 12 extends: After the swing arm 5 extends and lowers into place, the normally open contact switch of the right travel switch SQ1 is closed, and the closed circuit conducts. Connect the first time relay 19 to set a specified time to supply current to the outer rolling brush extension reversing valve 20, so that the outer rolling brush 12 continuously extends outward within the specified time until the time is up. During the extension of the outer rolling brush 12, current is simultaneously supplied to the overflow valve 24 through the diode 22.

[0139] Outer rolling brush 12 rotates and lifts: The normally open contact of the first time relay 19 and the normally closed contact of the first relay 21 are connected in series to supply power to the outer rolling brush rotation and lift valve 23, so that the outer rolling brush 12 continuously rotates and lifts backward until the upper proximity switch SQ2 disconnects the normally closed contact of the relay K2 from the outer rolling brush 12. During the rotation and lift of the outer rolling brush 12, current is simultaneously supplied to the overflow valve 24 through the diode 22.

[0140] One-key retraction of the upper cleaning mechanism's electric control part:

[0141] One-key retraction of the power supply electric control part: Power is supplied through the fuse FU2 of the retraction branch. The normally closed contact of the left travel switch SQ4, the normally closed contact of the first self-locking relay 16K1 of the extension circuit power supply, the normally open contact of a second self-locking relay 27, and the self-resetting push-button switch SB2 form a second self-locking circuit. The self-resetting push-button switch SB2 emits an excitation signal to make the second self-locking circuit work. The second self-locking circuit supplies power to the fourth time relay 28KT3, so that the fourth time relay 28KT3 works during the total time of the entire cleaning mechanism's retraction. Power is continuously supplied until the total retraction time is up or the cleaning mechanism is retracted in place.

[0142] Outer rolling brush 12 descends: Power is supplied to the outer rolling brush descending valve 30 through the normally closed contact of a relay K4 to get electricity. When the outer rolling brush 12 descends to the vertical position, the outer rolling brush 12 senses the lower proximity switch SQ3, and the lower proximity switch SQ3 conducts the relay K4 coil, causing the normally closed contact of the relay K4 to disconnect, and the outer rolling brush 12 stops rotating downward and forward. During the downward rotation of the outer rolling brush 12, current is simultaneously supplied to the overflow valve 24 through the diode 22.

[0143] Outer rolling brush 12 retracts inward: The normally open contact of the right travel switch SQ1 is connected to the normally closed contact of the time relay KT4 to supply power to the outer rolling brush retraction valve 32. The outer rolling brush retraction valve 32 gets electricity, and the outer rolling brush telescopic cylinder 6 retracts inward, driving the entire outer rolling brush 12 to retract inward. At the same time, the normally open contact of the previous relay K4 is used to activate the time relay KT4 to work. Until the time of the time relay KT4 is up, the normally closed contact of the time relay KT4 disconnects, and the outer rolling brush retraction valve 32 loses power and stops working. During the contraction of the outer rolling brush 12, current is simultaneously supplied to the overflow valve 24 through the diode 22.

[0144] The swing arm 5 retracts: The normally open contacts of the left travel switch SQ4, the time relay KT4, and a normally open contact of a relay K5 form a self-locking circuit to supply power to the swing arm retraction valve 34, causing the cleaning mechanism to move inward and upward until the swing arm 5 touches the roller of the left travel switch SQ4. During the retraction of the swing arm 5, current is simultaneously supplied to the overflow valve 24 through the diode 22.

[0145] The cleaning structure has a one-key operation circuit for both lowering and retracting, enabling automatic operation of the upper installation: ① Coordinate three independent actions, namely, extending the swing arm 5 mechanism, extending the outer rotary brush 12, and rotating the outer rotary brush 12 backward and lifting it, into a smooth operation for extending the cleaning mechanism. ② Coordinate three independent actions, namely, rotating and lowering the lifted outer rotary brush 12, retracting the outer rotary brush 12, and retracting the swing arm 5, into a smooth operation for retracting the cleaning mechanism. Six extension and retraction actions can also be completed by simply pressing the left and right of a selector switch, which can greatly reduce the workload of operators, reduce operation errors, and also reduce operation time and improve work efficiency.

[0146] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of this application, the patent protection scope of this application cannot be limited thereby. Any technical solutions resulting from equivalent structure or equivalent process substitution or modification using the content described in the text and drawings of the specification of this application based on the essence of this application, as well as those directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are all included in the patent protection scope of this application.

Claims

1. Control system for guardrail cleaning mechanism Characterized in that Comprising Extended branch, the extended branch comprising First self-locking circuit, the input end of the first self-locking circuit is connected to the power supply, and the first self-locking circuit is used to output working power when triggered; First trigger unit, the input end of the first trigger unit is connected to the output end of the first self-locking circuit, the normally closed point of the first trigger unit is connected to the swing arm extension reversing valve of the guardrail cleaning mechanism, and the first trigger unit is used to be triggered when the swing arm of the guardrail cleaning mechanism extends to a preset position. At this time, the normally closed point of the first trigger unit is disconnected, and the first normally open point of the first trigger unit is closed; First time relay, the input end of the first time relay is connected to the first normally open point of the first trigger unit, the normally closed point of the first time relay is connected to the outer roller brush extension reversing valve of the guardrail cleaning mechanism, and the first time relay is used to start timing when the first normally open point of the first trigger unit is closed, and when the first preset time is reached, disconnect the normally closed point of the first time relay and close the normally open point of the first time relay; Second trigger unit, the input end of the second trigger unit is connected to the output end of the first self-locking circuit, and the second trigger unit is used to connect the normally open point of the second trigger unit when the outer roller brush of the guardrail cleaning mechanism is sensed; First relay, the control end of the first relay is connected to the normally open point of the second trigger unit, the input end of the first relay is connected to the normally open point of the first time relay, and the output unit of the first relay is connected to the outer roller brush lifting valve of the guardrail cleaning mechanism; Retracted branch, the retracted branch comprising Second self-locking circuit, the input end of the second self-locking circuit is connected to the power supply, and the second self-locking circuit is used to output working power when triggered; Third trigger unit, the input end of the third trigger unit is connected to the output end of the second self-locking circuit, and the third trigger unit is used to connect the normally open point of the third trigger unit when the outer roller brush of the guardrail cleaning mechanism is sensed; Second relay, the control end of the second relay is connected to the normally open point of the third trigger unit, the input end of the second relay is connected to the output end of the second self-locking circuit, and the normally closed point of the second relay is connected to the outer roller brush lowering valve of the guardrail cleaning mechanism; Second time relay, the control end of the second time relay is connected to the normally open point of the second relay through the normally open point of the second relay, the input end of the second time relay is connected to the second normally open point of the first trigger unit, and the normally closed point of the second time relay is connected to the outer roller brush retraction valve; Fourth trigger unit, the input end of the fourth trigger unit is connected to the output end of the second self-locking circuit, and the fourth trigger unit is used to be triggered when the swing arm of the guardrail cleaning mechanism retracts to the original position. At this time, the normally closed point of the fourth trigger unit is disconnected; Third relay, the control end of the third relay is connected to the normally closed point of the fourth trigger unit through the normally open point of the second time relay, the input end of the third relay is connected to the normally closed point of the fourth trigger unit, and the normally open point of the third relay is connected to the swing arm contraction valve; The first self-locking circuit includes a first self-resetting switch and a first self-locking relay. The input end of the first self-resetting switch is connected to the power supply, and the input end of the first self-resetting switch is connected to the control end of the first self-locking relay. The input end of the normally open point of the first self-locking relay is connected to the power supply through the second normally closed point of the first relay. The second self-locking circuit includes a second self-resetting switch and a second self-locking relay. The input end of the second self-resetting switch is connected to the power supply, and the input end of the second self-resetting switch is connected to the control end of the second self-locking relay. The input end of the normally open point of the second self-locking relay is connected to the power supply through the second normally closed point of the fourth trigger unit.

2. The control system for the guardrail cleaning mechanism according to claim 1, characterized in that the input end of the normally open point of the first self-locking relay is connected to the power supply through the second normally closed point of the first relay and the normally closed point of the second self-locking relay. the input end of the normally open point of the second self-locking relay is connected to the power supply through the second normally closed point of the fourth trigger unit and the normally closed point of the first self-locking relay.

3. The control system for the guardrail cleaning mechanism according to claim 1, characterized in that the first self-locking circuit further includes a third time relay, the control end of the third time relay is connected to the output end of the normally open point of the first self-locking relay, the input end of the normally closed point of the third time relay is connected to the output end of the normally open point of the first self-locking relay, and the output end of the normally closed point of the third time relay outputs the working power supply. the second self-locking circuit further includes a fourth time relay, the control end of the fourth time relay is connected to the output end of the normally open point of the second self-locking relay, the input end of the normally closed point of the fourth time relay is connected to the output end of the normally open point of the second self-locking relay, and the output end of the normally closed point of the fourth time relay outputs the working power supply.

4. The control system for the guardrail cleaning mechanism according to claim 1, characterized in that it further includes an avoidance electric control branch, and the avoidance electric control branch includes: a pressure switch, the input end of the pressure switch is connected to the working power supply, the pressure switch is used to detect the oil pressure of the hydraulic oil circuit, and when the oil pressure of the hydraulic oil circuit reaches a preset pressure value, the output end outputs a trigger signal. a third self-locking relay, the control end of the third self-locking relay is connected to the output end of the pressure switch, and one end of the normally open point of the third self-locking relay is connected to the working power supply. a fifth time relay, the control end of the fifth time relay passes through the other end of the normally open point of the third self-locking relay. The first commutation relay, the control terminal of the first commutation relay is connected to the other end of the third self-locking relay through the normally-closed point of the fifth time relay, one end of the normally-closed point of the first commutation relay is connected to the output terminal of the first self-locking circuit, the other end of the normally-closed point of the first commutation relay is connected to the input terminal of the first trigger unit and the input terminal of the second trigger unit, one end of the normally-open point of the first commutation relay is connected to the output terminal of the second self-locking circuit, and the other end of the normally-open point of the first commutation relay is connected to the input terminal of the third trigger unit and the input terminal of the fourth trigger unit; The second commutation relay, the control terminal of the second commutation relay is connected to the other end of the third self-locking relay through the normally-closed point of the fifth time relay, one end of the normally-closed point of the second commutation relay is connected to the output terminal of the second self-locking circuit, the other end of the normally-closed point of the second commutation relay is connected to the input terminal of the third trigger unit and the input terminal of the fourth trigger unit, one end of the normally-open point of the second commutation relay is connected to the output terminal of the first self-locking circuit, and the other end of the normally-open point of the second commutation relay is connected to the input terminal of the first trigger unit and the input terminal of the second trigger unit.

5. The control system of the guardrail cleaning mechanism according to claim 1, characterized in that, The extending branch and the retracting branch are connected to the working power supply through the normally-open point of the main relay.

6. The control system of the guardrail cleaning mechanism according to claim 5, characterized in that, It further includes a low-temperature temperature control switch and / or a high-temperature temperature control switch and / or a hydraulic liquid level switch and / or an emergency stop switch; The control terminal of the main relay is connected to the working power supply through a low-temperature temperature control switch and / or a high-temperature temperature control switch and / or a hydraulic liquid level switch and / or an emergency stop switch.

7. The control system of the guardrail cleaning mechanism according to claim 1, characterized in that, It further includes a voice reminder module and / or a video monitoring module.

8. A guardrail cleaning vehicle, characterized in that, It includes a guardrail cleaning mechanism and a control system; The guardrail cleaning mechanism includes a swing arm oil cylinder, a base, a swing arm, an outer brush telescopic oil cylinder, a movable plate, an outer brush rotating frame, an outer brush rotating lifting oil cylinder, an outer brush and an inner brush; One end of the swing arm is hinged to the base, one end of the swing arm oil cylinder is connected to the base, the other end of the swing arm oil cylinder is connected to the swing arm, and the swing arm oil cylinder is used to drive the swing arm to extend or retract; The outer brush is arranged on the movable plate through the outer brush rotating frame, and the outer brush rotating lifting oil cylinder is used to drive the outer brush to rotate and lift or lower through the outer brush rotating frame; The outer brush telescopic oil cylinder is arranged at the other end of the swing arm, the outer brush telescopic oil cylinder is connected to the movable plate, and the outer brush telescopic oil cylinder is used to drive the movable plate to expand and contract; The inner brush is arranged at the other end of the swing arm; The control system is the control system of the guardrail cleaning mechanism according to any one of claims 1-7.

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