Military armored vehicle starting motor protection device
By introducing a time relay into the starter system circuit to delay the disconnection of the starting circuit, the problem of the starter motor of military armored vehicles working for a long time under abnormal conditions is solved, thus protecting the starter motor and reducing the failure rate and maintenance costs.
Patent Information
- Application Number
- CN202520347426.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-28
AI Technical Summary
The starter motor of military armored vehicles is damaged due to prolonged operation caused by the key being stuck in the start position or mechanical component failure. Existing technology cannot effectively solve this problem.
A time relay is introduced into the starter system circuit to delay the disconnection of the starting circuit. The time relay's delay protection mechanism prevents damage to the starter motor and ensures wiring stability and safety.
It effectively prevents the starter motor from being damaged due to prolonged operation under abnormal conditions, reduces the failure rate, reduces maintenance costs and time, and extends the service life of the starter motor.
Smart Images
Figure CN223767633U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle starter technology, specifically a protection device for the starter motor of a military armored vehicle. Background Technology
[0002] Under normal circumstances, when the vehicle's ignition key is turned to the start position, the electromagnetic force switch is activated, the drive gear meshes with the engine flywheel, and the power to the starter motor is connected, driving the engine to rotate. Once the engine starts, when the key is released, it should automatically return to the "ON" position, disconnecting the starting circuit, and the drive gear should also retract to prevent further operation.
[0003] However, if the key gets stuck in the start position, or if a mechanical component malfunctions and gets stuck in the start position, or if someone accidentally turns the ignition key to start the vehicle while it is already running, the starter motor will continue to operate or experience issues such as gear knocking, ultimately leading to damage to the starter motor. Similar malfunctions are frequent in military armored vehicles. Replacing the starter motor in military armored vehicles requires lifting the engine for the operation, which is time-consuming and labor-intensive. Furthermore, starter motors are expensive, resulting in high replacement and repair costs. Utility Model Content
[0004] The purpose of this invention is to provide a protection device for the starter motor of military armored vehicles to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a protection device for the starter motor of a military armored vehicle, including a time relay, which is connected in the starter system circuit to delay and cut off the starting circuit to prevent the starter motor from burning out due to prolonged operation caused by a fault. The time relay is provided with a terminal block, and the terminal block is provided with a socket that is electrically connected to the time relay. The wire is connected to the socket through a wire lug, making wiring convenient and quick.
[0006] A clamping strip is mounted on a terminal block, and a clamping device is provided on the lower surface of the clamping strip;
[0007] The pressure plate is rotatably connected to the terminal block. The clamping device presses the pressure plate into contact with the socket post to ensure stable wiring, good wiring, and to prevent poor contact problems.
[0008] Furthermore, the terminal block is equipped with a partition, and the pressure plate is rotatably connected to the partition through a plug-in post, ensuring that adjacent plug-in posts are insulated from each other, preventing short circuits and making electricity use safer.
[0009] Furthermore, the clamping device includes a connecting rod and a spring that fits around the connecting rod. The spring presses against the pressure plate to ensure that the spring stably presses against the pressure plate, and the wire is stably connected to the sleeve post.
[0010] Furthermore, the time relay includes a circuit breaker, a thermal relay, a time relay coil, and a contactor coil. Terminal 2 of the time relay is connected to the live wire from the selection button and the normally open contact terminal 6. Terminal 7 of the time relay is connected to the thermal relay and the A1 terminal of the contactor coil KM1. The normally open contact 8 of the time relay is connected to the A2 terminal of the contactor coil KM1.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] (1) The time relay starts to be energized and starts timing when the ignition key is turned to the start position. After the preset time is reached, regardless of whether the engine starts successfully, the contactor will immediately disconnect the power supply circuit of the starter motor, thereby protecting the starting system and preventing damage to the starter motor.
[0013] (2) The wire passes through the connector lug and is fitted onto the connector post. The spring pushes the pressure plate to press the connector lug, ensuring a stable connection while making the wiring operation convenient and requiring no tools. Attached Figure Description
[0014] Figure 1 This is a new top view of the utility model;
[0015] Figure 2 This is a schematic diagram of the interior of the terminal block of this utility model;
[0016] Figure 3 This is a schematic diagram of the time relay of this utility model.
[0017] In the diagram: 1. Time relay; 2. Mounting base; 3. Fixing base; 4. Pressure plate; 5. Plug-in post; 6. Sleeve post; 7. Clamping strip; 8. Connecting rod; 9. Spring; 10. Terminal block; 11. Partition plate. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Example:
[0020] Please see Figure 1-3This utility model provides a technical solution: a protection device for the starter motor of a military armored vehicle, including a time relay 1. The time relay 1 is connected in the starter system circuit and delays the starter circuit. Regardless of whether the engine starts successfully, the starter motor is de-energized to prevent damage to the starter motor, avoid unnecessary maintenance problems of the armored vehicle, and reduce the failure rate of the armored vehicle.
[0021] The time relay 1 is provided with a terminal block 10, and the terminal block 10 is provided with a socket post 6 that is electrically connected to the time relay 1. The wires of the starter system are connected to the terminal lugs. The terminal lugs are fitted over the socket post 6 to realize the electrical connection between the time relay 1 and the starter system.
[0022] A clamping strip 7 is installed on the terminal block 10, and a clamping device is provided on the lower surface of the clamping strip 7;
[0023] The pressure plate 4 is rotatably connected to the terminal block 10. The clamping device presses the pressure plate 4 into contact with the socket 6 to ensure that the terminal lug will not detach from the socket 6 and will not cause poor contact due to the vibration of the armored vehicle.
[0024] In this embodiment, as Figure 1 and Figure 2 As shown, the terminal block 10 is provided with a partition 11. The pressure plate 4 is rotatably connected to the partition 11 through the plug post 5. When the wire lug is connected to the socket post 6, the pressure plate 4 is bent upward to facilitate the wire lug to fit onto the socket post 6.
[0025] In this embodiment, as Figure 1 and Figure 2 As shown, the terminal block 10 has a fixing seat 3 on its side. The clamping strip 7 is connected to the fixing seat 3 by screws to ensure that the clamping strip 7 stably maintains the clamping state of the spring 9 on the pressure plate 4 and prevents the pressure plate 4 from tilting upward.
[0026] In this embodiment, as Figure 1 and Figure 2 As shown, the time relay 1 has mounting bases 2 on its left and right sides, and screws can be used to fix the time relay 1 to a designated position.
[0027] In this embodiment, as Figure 2 As shown, the clamping device includes a connecting rod 8 and a spring 9 that fits around the connecting rod 8. The spring 9 abuts against the pressure plate 4, and the connecting rod 8 fixes the spring 9 to prevent it from being lost, maintain the installation state of the spring 9, and ensure stable clamping of the pressure plate 4.
[0028] In this embodiment, as Figure 3As shown, the time relay 1 includes a circuit breaker, a thermal relay, a time relay 1 coil, and a contactor coil. Terminal 2 of the time relay 1 is connected to the live wire from the selection button and the normally open contact terminal 6. Terminal 7 of the time relay 1 is connected to the thermal relay and the A1 terminal of the contactor coil KM1. The normally open contact 8 of the time relay 1 is connected to the A2 terminal of the contactor coil KM1.
[0029] Specifically, during use, a time relay 1 is added to the starter system circuit, the wire is connected to the lug, the pressure plate 4 is separated from the socket 6, the lug is put on the socket 6, the pressure plate 4 is released, the spring 9 pushes the pressure plate 4 to block the lug, ensuring a stable connection between the lug and the socket 6.
[0030] like Figure 3 As shown, the delayed start is connected to normally open contacts 6 and 8, and the delayed stop is connected to normally closed contacts 5 and 8. When the selector switch is closed, time relay KT1 is energized first. The normally open contact of KT1 closes to achieve self-locking, and the time relay is energized to start the delay. When the delay time is up, the delayed closing contact of the time relay closes, the contactor KM is energized and works, disconnecting the power supply line to the starter motor, and the starter motor stops working.
[0031] The time relay begins energizing and timing from the moment the ignition key is turned to the start position (e.g., preset to 5 seconds). After the preset 5-second time, regardless of whether the engine starts successfully, it immediately controls the contactor to disconnect the starter motor power supply circuit, thus protecting the starting system. Therefore, after the starter motor starts the engine, in addition to the normal power-off protection, an abnormal power-off protection mechanism is added:
[0032] 1. Power failure protection under normal circumstances (time relay timing < 5s): When the ignition key is turned to the start position, the electromagnetic force switch is activated, the drive gear meshes with the engine flywheel, and at the same time the power supply of the starter motor is connected, driving the engine to rotate. Once the engine starts, release the key, the key should automatically return to the "ON" position, disconnect the starting circuit, the drive gear should also return, and the engine should operate normally.
[0033] 2. Power failure protection under abnormal conditions (time relay timing > 5s): If the ignition key is stuck in the start position or the mechanical parts are stuck in the start position, the time relay will start to be energized from the moment the ignition key is turned to the start position. After the preset time of 5s is reached, regardless of whether the engine starts successfully, the contactor will be immediately controlled to disconnect the power supply circuit of the starter motor, thereby protecting the starting system.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A protection device for the starting motor of a military armored vehicle, characterized in that, Including: Time relay (1), the time relay (1) is connected in the starter system loop, the time relay (1) is provided with a terminal block (10), the terminal block (10) is provided with a sleeve joint column (6) electrically connected with the time relay (1); Compression strip (7), the compression strip (7) is installed to the terminal block (10), the lower surface of the compression strip (7) is provided with a compression device; The pressing piece (4) is rotatably connected with the terminal block (10), and the compression device presses the pressing piece (4) to contact the sleeve joint column (6).
2. A starting motor protection device for a military armored vehicle according to claim 1, characterized in that: The terminal block (10) is provided with a partition (11), and the pressing piece (4) is rotatably connected with the partition (11) through a plug-in column (5).
3. A protective device for the starting motor of a military armored vehicle according to claim 1, characterized in that: The side surface of the terminal block (10) is provided with a fixing seat (3), and the compression strip (7) is connected with the fixing seat (3) through a screw.
4. A protective device for the starting motor of a military armored vehicle according to claim 1, characterized in that: The left and right side surfaces of the time relay (1) are provided with an assembly seat (2).
5. A protective device for the starting motor of an armored military vehicle according to claim 1, characterized in that: The compression device includes a connecting rod (8) and a spring (9) sleeving the connecting rod (8), and the spring (9) abuts against the pressing piece (4).
6. A protective device for the starting motor of an armored military vehicle according to claim 1, characterized in that: The time relay (1) includes a circuit breaker, a thermal relay, a time relay (1) coil, a contactor coil, a 2nd terminal of the time relay (1) is connected with a fire wire from a selection button and a normally open contact 6th terminal, a 7th terminal of the time relay (1) is connected with a thermal relay and an A1 terminal of a contactor coil KM1, and an 8th normally open contact of the time relay (1) is connected with an A2 terminal of the contactor coil KM1.