Control structure for synchronous operation of pneumatic locomotive window wiper
By combining a controller, a position sensor, and a reversing solenoid valve, the synchronous operation of the windshield wipers in pneumatic vehicles is achieved, solving the problem of asynchronous wiper positions and improving the driver's visibility and safety.
Patent Information
- Application Number
- CN202520352716.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-03-03
AI Technical Summary
Existing pneumatic vehicle windshield wipers operate independently, resulting in different operating speeds and asynchronous wiper positions, which affects the driver's visibility and safety.
The system employs a combination of a controller, a position sensor, and a reversing solenoid valve. The sensor determines the wiper rotation position and synchronously controls the wiper reversal, ensuring that the left and right wipers reverse direction simultaneously.
It enables the synchronized operation of the left and right windshield wipers, avoiding the accumulation of positional differences and improving driving safety.
Smart Images
Figure CN223672471U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to rail transit vehicle technical field especially relates to a control structure that pneumatic locomotive wiper synchronous operation. BACKGROUND
[0002] Locomotive wiper is the component that clears rainwater and other dirt on the front windshield of locomotive, and is the important auxiliary equipment to ensure the safe operation of locomotive.
[0003] Pneumatic locomotive wiper uses high-pressure gas as the power source of wiper operation, and high-pressure air acts on the pneumatic motor, and the reciprocating movement of the piston rod of the motor drives the wiper wiper on the windshield to reciprocate.
[0004] At present, most of the lookout windows of locomotives are two small front windshield glasses or one large front windshield glass, and two wipers are required to be used to wipe at the same time to meet the requirements of the driver's lookout field of view.
[0005] Now most of the two wipers on the front windshield of the locomotive work independently. When two pneumatic wipers work independently, the running speed of the two wipers may differ due to different lengths of the installed air pipe, different external friction, etc., or different friction in the motor cylinder, etc., which will eventually cause the running positions of the two wiper wipers to differ, and the position difference will gradually accumulate and become larger, eventually resulting in the two wiper wipers wiping each other and unable to run synchronously.
[0006] The asynchronous running mode of the wiper will seriously affect the lookout field of view of the driver on rainy days, and easily cause visual fatigue of the driver, affecting safe driving.
[0007] For the phenomenon of asynchronous operation of the two pneumatic wipers, there is no good solution in the industry at present. When the locomotive uses pneumatic wipers, the general design scheme is to use one wiper, install it in the middle of the glass, and lengthen the length of the wiper arm and the wiper blade, increase the wiping angle of the wiper, and increase the wiping area as much as possible. However, if the length-width ratio of the windshield glass is large, the above scheme will still have a large area on the left and right sides of the windshield glass that cannot be wiped by the wiper wiper, and in rainy and snowy weather, the lookout field of view of the driver will be seriously reduced, which will affect the safe driving of the train.
[0008] Or use two pneumatic wipers, each wiper is controlled independently, and the synchronization of the two wipers is not considered, and they are independently wiped. When the two wipers are not synchronized, the driver is prone to visual fatigue, which poses a certain safety hazard to the driver driving the locomotive.
[0009] In view of the above, it is necessary to design a control structure for synchronous operation of the pneumatic vehicle wiper to solve the above problems. Content of the utility model
[0010] The main purpose of the utility model is to provide a control structure for synchronous operation of the pneumatic vehicle wiper, so as to effectively solve the problems in the background art.
[0011] To achieve the above object, the utility model takes the following technical scheme: a control structure for synchronous operation of the pneumatic vehicle wiper, comprising a controller, a left wiper, a right wiper, a right wiper motor and a left wiper motor; the left wiper and the right wiper are fixed on a left wiper motor drive shaft and a right wiper motor drive shaft respectively, a left position sensor is fixed at the rear end of the left wiper motor drive shaft, and a right position sensor is fixed at the rear end of the right wiper motor drive shaft;
[0012] A right reversing electromagnetic valve is installed on the right wiper motor, and a left reversing electromagnetic valve is installed on the left wiper motor, so as to change the rotating direction of the wiper;
[0013] The left wiper motor and the right wiper motor are connected to a high-pressure gas supply pipe through a pipeline;
[0014] The left reversing electromagnetic valve, the right reversing electromagnetic valve, the left position sensor and the right position sensor are electrically connected to the controller, the controller is electrically connected to a control switch and is connected to a power line.
[0015] Preferably, the left position sensor and the right position sensor can judge the rotating position of the left wiper motor drive shaft and the right wiper motor drive shaft, and when the wiper motor drive shaft rotates to the leftmost side or the rightmost side, the left and right position sensors respectively send signals to the controller.
[0016] Preferably, the controller is electrically connected to the left reversing electromagnetic valve and the right reversing electromagnetic valve, and after the controller receives the position signals of the left wiper motor drive shaft and the right wiper motor drive shaft sent by the left position sensor and the right position sensor, the controller simultaneously sends reversing signals to the left reversing electromagnetic valve and the right reversing electromagnetic valve, so that the left wiper motor and the right wiper motor simultaneously change direction and operate, and the reciprocating wiping action of the wiper is realized.
[0017] When this control method is adopted, even if there is a difference in running speed between the left wiper and the right wiper during operation, since the two wipers simultaneously change direction, the position difference during the operation of the wipers will not be accumulated to cause obvious out-of-sync phenomenon, and it can be considered that the synchronous operation of the left wiper and the right wiper is realized.
[0018] The utility model has the beneficial effects that the synchronous operation of the left wiper and the right wiper is realized, and the driver will not be affected by the out-of-sync of the two wipers. DRAWINGS
[0019] ATTACHFigure 1 This is a schematic diagram of the structure of this utility model.
[0020] Appendix Figure 2 This is a schematic diagram of the motor connection structure of this utility model.
[0021] Appendix Figure 1 —2, Left wiper 1, Right wiper 2, Right wiper motor 3, Left wiper motor 4, Power cord 5, Control switch 6, Controller 7, High-pressure air supply pipe 8, Left wiper motor drive shaft 9, Right wiper motor drive shaft 9-1, Left position sensor 10, Right position sensor 10-1, Left reversing solenoid valve 11, Right reversing solenoid valve 11-1. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0023] Appendix Figure 1 , 2 As shown, a control structure for synchronous operation of pneumatic vehicle windshield wipers includes a controller 7, a left wiper 1, a right wiper 2, a right wiper motor 3, and a left wiper motor 4; the left wiper 1 and the right wiper 2 are respectively fixed on the left wiper motor drive shaft 9 and the right wiper motor drive shaft 9-1, a left position sensor 10 is fixed to the rear end of the left wiper motor drive shaft 9, and a right position sensor 10-1 is fixed to the rear end of the right wiper motor drive shaft 9-1;
[0024] A right reversing solenoid valve 11-1 is installed on the right wiper motor 3, and a left reversing solenoid valve 11 is installed on the left wiper motor 4 to change the direction of wiper rotation.
[0025] The left wiper motor 4 and the right wiper motor 3 are connected to the high-pressure air supply pipe 8 via pipelines.
[0026] The left reversing solenoid valve 11, the right reversing solenoid valve 11-1, the left position sensor 10, and the right position sensor 10-1 are electrically connected to the controller 7. The controller 7 is electrically connected to the control switch 6 and connected to the power line 5.
[0027] The left position sensor 10 and the right position sensor 10-1 can determine the rotational position of the left wiper motor drive shaft 9 and the right wiper motor drive shaft 9-1. When the wiper motor drive shaft rotates to the leftmost or rightmost position, the left and right position sensors send signals to the controller 7 respectively.
[0028] The controller 7 is electrically connected with the left reversing electromagnetic valve 11 and the right reversing electromagnetic valve 11-1, when the controller 7 receives the position signal of the left wiper motor drive shaft 9 and the right wiper motor drive shaft 9-1 sent by the left position sensor 10 and the right position sensor 10-1, the left reversing electromagnetic valve 11 and the right reversing electromagnetic valve 11-1 are sent the reversing signal at the same time, the left wiper motor 4 and the right wiper motor 3 are operated reversely at the same time, and the reciprocating wiping action of the wiper is realized.
[0029] The control method can avoid the phenomenon that the position difference of the wiper in the operation process is obviously out of synchronization due to the accumulation of the position difference of the left wiper 1 and the right wiper 2 in the operation process, and can be considered to realize the synchronous operation of the left wiper 1 and the right wiper 2.
[0030] Beneficial effects: the synchronous operation of the left wiper 1 and the right wiper 2 is realized, and the driver is not affected by the asynchronization of the two wipers.
[0031] Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions recorded in the foregoing embodiments or replace part of the technical features equivalently, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A control structure for synchronous operation of windshield wipers in a pneumatic vehicle, characterized in that: It includes a controller, a left wiper, a right wiper, a right wiper motor, and a left wiper motor; the left wiper and the right wiper are respectively fixed on the left wiper motor drive shaft and the right wiper motor drive shaft, a left position sensor is fixed to the rear end of the left wiper motor drive shaft, and a right position sensor is fixed to the rear end of the right wiper motor drive shaft. A right reversing solenoid valve is installed on the right wiper motor, and a left reversing solenoid valve is installed on the left wiper motor to change the direction of wiper rotation. The left and right wiper motors are connected to the high-pressure air supply pipe via tubing. The left reversing solenoid valve, the right reversing solenoid valve, the left position sensor, and the right position sensor are electrically connected to the controller. The controller is electrically connected to the control switch and is connected to the power supply.
2. The control structure for synchronous operation of a pneumatic vehicle windshield wiper according to claim 1, characterized in that: The left and right position sensors can determine the rotational position of the left and right wiper motor drive shafts. When the wiper motor drive shaft rotates to the leftmost or rightmost position, the left and right position sensors send signals to the controller respectively.
3. The control structure for synchronous operation of a pneumatic vehicle windshield wiper according to claim 1, characterized in that: The controller is electrically connected to the left and right reversing solenoid valves. When the controller receives the position signals of the left and right wiper motor drive shafts from the left and right position sensors, it simultaneously sends reversing signals to the left and right reversing solenoid valves. The left and right wiper motors then reverse their operation, realizing the reciprocating wiping action of the wipers.