An emergency starting device for a diesel engine

Abstract

The utility model relates to the diesel engine starting field, concretely relates to a diesel engine emergency starting device, realizes two independent starting modes of electric power automatic and manpower manual through setting up electromagnetic drive module and manual drive module, realizes two drive mode switch in same circuit through setting up movable contact as the common execution terminal of electromagnetic drive module and manual drive module, realizes the rotation of drive arm conversion to the linear drive to movable contact through setting up connecting rod assembly, resets to the movable contact disconnecting state with drive arm and connecting rod assembly automatic after setting up elastic reset subassembly, avoids movable contact and cannot press tightly first fixed contact and second fixed contact and the defect that the device cannot automatic quick tripping reset after the hand is released when the manual closing operation, solves the problem that the existing diesel engine starting device exists excessive dependence secondary control loop, leads to redundant starting system still will be paralyzed when secondary circuit is completely invalid.

Description

Technical Field

[0001] This utility model relates to the field of diesel engine starting technology, and in particular to an emergency starting device for diesel engines. Background Technology

[0002] The starting of existing diesel engines generally relies on electronic control systems, with electric starting being the most common method. In critical equipment, two redundant motors are even installed simultaneously to improve reliability. However, both modes depend on a secondary control loop, which is a circuit containing control components such as relays and PLCs. This loop is used to activate and coordinate the self-starting program. When the secondary control loop completely fails due to a fault, its control commands cannot be issued, potentially causing the redundant systems of both motors to fail simultaneously and paralyze, hindering rapid emergency response.

[0003] Therefore, there is an urgent need for an emergency diesel engine starting device that can start the diesel engine even when the secondary control circuit completely fails. Utility Model Content

[0004] To address the problem that existing diesel engine starting devices over-rely on the secondary control loop, causing the redundant starting system to fail even when the secondary loop completely fails.

[0005] This utility model provides a diesel engine emergency starting device, including a base, a circuit connection module, an electromagnetic drive module, and a manual drive module mounted on the base. The circuit connection module includes a first fixed contact, a second fixed contact, and a moving contact, with the first and second fixed contacts spaced apart. The electromagnetic drive module is connected to the moving contact and is used to drive the moving contact to press against the first and second fixed contacts in response to an electrical signal. The manual drive module includes a drive arm, a linkage assembly, and an elastic reset assembly. The drive arm is hinged to the base and rotates around its hinge point under external force. The linkage assembly converts the rotation of the drive arm into a linear drive of the moving contact, pressing against the first and second fixed contacts. The elastic reset assembly drives the drive arm and linkage assembly to quickly reset to the initial open / disconnected position after the external force is removed.

[0006] Preferably, the electromagnetic drive module includes a housing, and a fixed magnet, a movable magnet, a first return spring, and a coil disposed within the housing; the housing is connected to a base; the fixed magnet is connected to one side inside the housing; the movable magnet is slidably connected to the other side inside the housing, and the movable magnet and a movable contact are fixedly connected; the two ends of the first return spring are respectively connected to the fixed magnet and the movable magnet; the coil is wrapped around the outside of the movable magnet and the fixed magnet, and the coil is used to drive the movable magnet to slide, and the coil is electrically connected to a lead wire, which is exposed outside the housing.

[0007] Preferably, the end where the moving magnet and the moving contact are connected extends outward to form a joint, which is used to engage with the linkage assembly.

[0008] Preferably, the linkage assembly includes a flipping seat, a flipping rod, and a top post; the elastic reset assembly includes a limiting spring, a second reset spring, and a third reset spring; the bottom of the flipping seat is hinged to the drive arm; the bottom of the flipping rod is hinged to the flipping seat, and the top of the flipping rod is movably connected to the drive arm; one end of the top post abuts against one side of the flipping rod; the limiting spring is sleeved on the flipping rod, and the top end of the limiting spring is connected to the drive arm, and the bottom end of the limiting spring is connected to the bottom of the flipping rod; one end of the second reset spring is connected to the base, and the other end of the second reset spring is connected to the drive arm; one end of the third reset spring is connected to the moving contact, and the other end of the third reset spring is connected to the top post.

[0009] Preferably, the elastic force of the limiting spring is greater than the elastic force of the second return spring.

[0010] Preferably, a transmission rod is fixedly connected to the top of the drive arm, and a handle ball is fixedly connected to the end of the transmission rod away from the drive arm.

[0011] Preferably, the elastic reset assembly further includes a guide rod fixed to the base, the guide rod passing through the drive arm and slidingly engaging with the drive arm, and a second reset spring sleeved on the guide rod.

[0012] Preferably, the base is integrally formed and includes a first extension, a second extension, and a third extension; the first extension is fixedly connected to the encapsulation shell, one end of the guide rod is fixedly connected to the second extension, and the other end of the guide rod is fixedly connected to the third extension after passing through the second reset spring and the drive arm in sequence, and the drive arm is hinged to the third extension.

[0013] Preferably, the first fixed contact is fixedly connected to the first terminal block, and the second fixed contact is fixedly connected to the second terminal block.

[0014] Preferably, the diesel engine emergency starting device further includes a locking assembly, which includes an arc-shaped groove, a guide groove, a third return spring, a limiting member, and a slider. The arc-shaped groove is located on the base and is arranged around the hinge point between the drive arm and the base. The guide groove is located on the base and communicates with the arc-shaped groove. The third return spring and the limiting member are both housed in the guide groove. The bottom end of the third return spring is connected to the guide groove, and the top end of the third return spring is connected to the limiting member. One side of the top end of the limiting member has a sloped structure, and the bottom of the limiting member has a handle that protrudes from the guide groove. The limiting member is used to restrict the movement of the slider. The slider is fixedly connected to one side of the drive arm and slidably connected to the arc-shaped groove.

[0015] The beneficial effects of this invention are as follows: By setting up an electromagnetic drive module and a manual drive module, two independent starting methods—electric automatic and manual—are achieved, without interference between them; by setting a moving contact as a shared execution terminal for both the electromagnetic drive module and the manual drive module, both drive modes are used to connect the same circuit; by setting up a linkage assembly, the rotation of the drive arm is converted into linear drive of the moving contact, solving the problem that manual operation is difficult to directly and efficiently convert into circuit connection action; by setting up an elastic reset assembly, the drive arm and linkage assembly automatically reset to the state of being disconnected from the moving contact after the external force is removed, avoiding the defects of the moving contact not being able to press the first and second fixed contacts during manual closing operation and the device not being able to automatically and quickly open and reset after releasing the force. This solves the problem that existing diesel engine starting devices rely excessively on the secondary control circuit, causing the redundant starting system to fail even when the secondary circuit completely fails. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the diesel engine emergency start device of Example 1.

[0017] Figure 2 This is a cross-sectional structural schematic diagram of the diesel engine emergency starting device of Example 1.

[0018] Figure 3 This is a three-dimensional structural diagram of a portion of the diesel engine emergency starting device of Example 1.

[0019] Figure 4 This is a three-dimensional structural diagram of the diesel engine emergency start device of Example 2.

[0020] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0021] In the diagram: 1-Base; 11-First extension section; 12-Second extension section; 13-Third extension section; 2-Circuit conduction module; 21-First fixed contact; 22-Second fixed contact; 23-Moving contact; 3-Electromagnetic drive module; 31-Encapsulation shell; 32-Fixed magnet; 33-Moving magnet; 34-First return spring; 35-Coil; 36-Joint; 4-Manual drive module; 41-Drive arm; 411-Transmission rod; 412-Handle ball; 42-Flip seat; 43-Flip rod; 44-Top column; 45-Limit spring; 46-Second return spring; 47-Third return spring; 48-Guide rod; 5-Locking assembly; 51-Arc-shaped slide groove; 52-Guide groove; 53-Third return spring; 54-Limiting component; 55-Slider; 56-Handle. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Example 1: Reference Figures 1-3 An emergency starting device for a diesel engine includes a base 1, a circuit connection module 2, an electromagnetic drive module 3, and a manual drive module 4 mounted on the base 1. The circuit connection module 2 includes a first fixed contact 21, a second fixed contact 22, and a moving contact 23, with the first fixed contact 21 and the second fixed contact 22 spaced apart. The electromagnetic drive module 3 is connected to the moving contact 23 and is used to drive the moving contact 23 to press against the first fixed contact 21 and the second fixed contact 22 in response to an electrical signal. The manual drive module 4 includes a drive arm 41, a connecting rod assembly, and an elastic reset assembly. The drive arm 41 is hinged to the base 1 and rotates around its hinge point under the action of an external force. The connecting rod assembly is used to convert the rotation of the drive arm 41 into a linear drive of the moving contact 23 and press against the first fixed contact 21 and the second fixed contact 22. The elastic reset assembly is used to drive the drive arm 41 and the connecting rod assembly to quickly reset to the initial open and de-energized position after the external force is removed.

[0024] By setting up electromagnetic drive module 3 and manual drive module 4, two independent starting methods, automatic power and manual operation, are achieved without interference between them. By setting the moving contact 23 as a shared execution terminal for both electromagnetic drive module 3 and manual drive module 4, both drive modes can be used to connect the same circuit. By setting up a linkage assembly, the rotation of drive arm 41 is converted into linear drive of moving contact 23, solving the problem that manual operation is difficult to directly and efficiently convert into circuit connection. By setting up an elastic reset assembly, the drive arm 41 and linkage assembly automatically reset to the state of being disconnected from moving contact 23 after the external force is removed, avoiding the defects of moving contact 23 not being able to press the first fixed contact 21 and the second fixed contact 22 during manual closing operation, and the device not being able to automatically and quickly open and reset after releasing the force. When the drive arm 41 is driven to reset to the initial position, moving contact 23 separates from the first fixed contact 21 and the second moving contact 22, and the electrical connection between the first fixed contact 21 and the second fixed contact 22 is broken. This solves the problem that existing diesel engine starting devices rely too heavily on the secondary control loop, causing the redundant starting system to fail even when the secondary loop completely fails.

[0025] In some embodiments, the electromagnetic drive module 3 includes a housing 31, and a fixed magnet 32, a movable magnet 33, a first return spring 34, and a coil 35 disposed within the housing 31; the housing 31 is connected to the base 1; the fixed magnet 32 ​​is connected to one side inside the housing 31; the movable magnet 33 is slidably connected to the other side inside the housing 31, and the movable magnet 33 is fixedly connected to the movable contact 23; the two ends of the first return spring 34 are respectively connected to the fixed magnet 32 ​​and the movable magnet 33; the coil 35 is wrapped around the outside of the movable magnet 33 and the fixed magnet 32, and the coil 35 is used to drive the movable magnet 33 to slide, and the coil 35 is electrically connected to a lead wire, which is exposed outside the housing 31.

[0026] The coil 35 generates a magnetic field, which attracts the moving magnet 33 to move towards the fixed magnet 32, thereby moving the moving contact 23. This allows the moving contact 23 to be electrically connected to both the first fixed contact 21 and the second fixed contact 22. By setting a first reset spring 34, it is ensured that after the coil 35 is de-energized, the moving magnet 33 moves away from the fixed magnet 32 ​​under the elastic force of the first reset spring 34, thus achieving automatic reset of the moving contact 23.

[0027] Preferably, the end where the movable magnet 33 and the movable contact 23 are connected extends outward to form a joint 36, which is used to engage with the linkage assembly.

[0028] The joint 36 serves as the connection point between the electromagnetic drive module 3 and the manual drive module 4, ensuring that the linear motion of the linkage assembly can be accurately transmitted to the moving contact 23, and ensuring that the moving contact 23 can accurately move to the conducting position.

[0029] In some embodiments, the linkage assembly includes a flipping seat 42, a flipping rod 43, and a top post 44; the elastic reset assembly includes a limiting spring 45, a second reset spring 46, and a third reset spring 47; the bottom of the flipping seat 42 is hinged to the drive arm 41; the bottom of the flipping rod 43 is hinged to the flipping seat 42, and the top of the flipping rod 43 is movably connected to the drive arm 41; one end of the top post 44 abuts against one side of the flipping rod 43; the limiting spring 45 is sleeved on the flipping rod 43, and the top end of the limiting spring 45 is connected to the drive arm 41, and the bottom end of the limiting spring 45 is connected to the bottom of the flipping rod 43; one end of the second reset spring 46 is connected to the base 1, and the other end of the second reset spring 46 is connected to the drive arm 41; one end of the third reset spring 47 is connected to the moving contact 23, and the other end of the third reset spring 47 is connected to the top post 44.

[0030] Reference Figure 2 The operator moves the drive arm 41 along the direction of the arrow in the diagram towards the position indicated by the dotted line. As the drive arm 41 moves, it must simultaneously overcome the elastic force of the limiting spring 45 and the second return spring 46 until the drive arm 41 is aligned with the limiting spring 45, the flipping rod 43, and the flipping seat 42. Figure 2At the position indicated by the dotted line, the limiting spring 45 is compressed to its maximum extent, storing mechanical energy. Continuing to operate the drive arm 41, once it passes the dotted line, the energy of the limiting spring 45 is released instantaneously. Under the thrust of the limiting spring 45, the tilting rod 43 drags the tilting seat 42 towards... Figure 2 Moving rapidly in the opposite direction indicated by the middle arrow, the flipping lever 43 drives the top column 44 to move quickly towards the moving iron core, pushing the moving iron core to the bottom. Specifically, the top column 44 first abuts against the connecting part 36, and then pushes the moving iron core to move. The moving iron core drives the moving contact 23 to quickly connect the first fixed contact 21 and the second fixed contact 22, completing the manual operation. The operator continues to exert force to maintain the state of the drive arm 41 until the engine starts successfully.

[0031] Preferably, the elastic force of the limiting spring 45 is greater than the elastic force of the second return spring 46.

[0032] Once the engine has been successfully started in an emergency, the operator releases the drive arm 41. At this point, the return spring pushes the drive arm 41 back to its original position. Because the force of the return spring is greater than the force of the limit spring 45, the drive arm 41 moves backward... Figure 2 When the movement is in the opposite direction indicated by the middle arrow, it can quickly pass through the dotted line position. The limit spring 45 is compressed again by the rebound force of the reset spring. After the drive arm 41 passes the dotted line position, the flipping rod 43 returns quickly to the original stationary direction under the pushing force of the limit spring 45. The moving contact 23 quickly separates from the first fixed contact 21 and the second fixed contact 22, realizing the circuit cut-off.

[0033] Preferably, a transmission rod 411 is fixedly connected to the top of the drive arm 41, and a handle ball 412 is fixedly connected to the end of the transmission rod 411 away from the drive arm 41.

[0034] By setting up the transmission rod 411 and the handle ball 412, it is easier for the operator to grip, and at the same time the lever arm of the drive arm 41 is extended. According to the lever principle, the operator needs to exert the least force when applying force at the handle ball 412, thus making it easier to push the moving contact 23.

[0035] Preferably, the elastic reset assembly further includes a guide rod 48 fixed to the base 1, the guide rod 48 passing through the drive arm 41 and slidingly engaging with the drive arm 41, and a second reset spring 46 sleeved on the guide rod 48.

[0036] By setting the guide rod 48, the second return spring 46 is prevented from bending, jamming or undergoing non-axial deformation during compression and extension.

[0037] More preferably, the base 1 is integrally formed and includes a first extension 11, a second extension 12 and a third extension 13; the first extension 11 is fixedly connected to the encapsulation shell 31, one end of the guide rod 48 is fixedly connected to the second extension 12, and the other end of the guide rod 48 is fixedly connected to the third extension 13 after passing through the second reset spring 46 and the drive arm 41 in sequence, and the drive arm 41 is hinged to the third extension 13. The top of the third extension 13 protrudes to limit the movement range of the flip seat 42.

[0038] The first extension 11, the second extension 12, and the third extension 13 are formed by cutting and bending the base 1. By setting the first extension 11, the second extension 12, and the third extension, a solid mounting foundation is provided for the encapsulation shell 31, the guide rod 48, and the drive arm 41, respectively. The one-piece structure of the base 1 makes the installation of the electromagnetic drive module 3 and the manual drive module 4 more stable.

[0039] In some embodiments, the first fixed contact 21 is fixedly connected to the first terminal block, and the second fixed contact 22 is fixedly connected to the second terminal block.

[0040] The first fixed contact 21, the first terminal block, the second fixed contact 22, and the second terminal block are all made of conductive material.

[0041] When the moving contact 23 moves to the conducting position, its two ends contact the first contact piece and the second contact piece, respectively, thus electrically connecting the first terminal and the second terminal. The first and second terminals are specifically screw holes or nut posts, used to secure the large power cable connectors, ensuring a firm connection and preventing loosening due to vibration. The first and second contact pieces are copper contacts, used to withstand the arcing during switching and the frequent mechanical impacts with the moving contact 23.

[0042] Example 2: Reference Figures 4-5 The difference between this embodiment and Embodiment 1 is that the diesel engine emergency starting device further includes a locking component 5. The locking component 5 includes an arc-shaped slide groove 51, a guide groove 52, a third return spring 53, a limiting member 54, and a slider 55. The arc-shaped slide groove 51 is located on the base 1 and is arranged around the hinge point of the drive arm 41 and the base 1. The guide groove 52 is located on the base 1 and communicates with the arc-shaped slide groove 51. The third return spring 53 and the limiting member 54 are both housed in the guide groove 52. The bottom end of the third return spring 53 is connected to the guide groove 52, and the top end of the third return spring 53 is connected to the limiting member 54. One side of the top end of the limiting member 54 is a sloping structure. The bottom of the limiting member 54 is provided with a handle 56, which is exposed outside the guide groove 52. The limiting member 54 is used to restrict the movement of the slider 55. The slider 55 is fixedly connected to one side of the drive arm 41 and slidably connected to the arc-shaped slide groove 51.

[0043] When the drive arm 41 moves towards Figure 2 When the slider is moved in the direction indicated by the middle arrow, the slider 55 moves along the arc-shaped groove 51 towards... Figure 2 Move in the opposite direction indicated by the middle arrow until it passes the limiting member 54, pushing the moving contact 23 to the conducting position. At this time, the limiting member 54, under the pushing force of the third return spring 53, pushes into the arc-shaped slide groove 51, and the slider 55 is blocked by the limiting block, preventing the drive arm 41 from resetting. The operator only needs to press down the handle 56 to compress the third return spring 53, causing the limiting member 54 to retract into the guide groove 52, and the drive arm 41 will return to its initial position under the action of the return spring.

[0044] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] 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 diesel engine emergency starting device, comprising a base, a circuit connection module, an electromagnetic drive module, and a manual drive module mounted on the base, characterized in that: The circuit conduction module includes a first fixed contact, a second fixed contact, and a moving contact, with the first fixed contact and the second fixed contact spaced apart. The electromagnetic drive module is connected to the moving contact. The electromagnetic drive module is used to drive the moving contact to press the first fixed contact and the second fixed contact in response to the electrical signal. The manual drive module includes a drive arm, a linkage assembly, and an elastic reset assembly. The drive arm is hinged to the base and rotates around its hinge point under the action of external force. The linkage assembly is used to convert the rotation of the drive arm into linear drive of the moving contact and press the first fixed contact and the second fixed contact. The elastic reset assembly is used to drive the drive arm and linkage assembly to quickly reset to the initial open and de-energized position after the external force is removed.

2. The diesel engine emergency starting device according to claim 1, characterized in that: The electromagnetic drive module includes a housing, and a fixed magnet, a movable magnet, a first return spring, and a coil disposed within the housing. The housing is connected to a base. The fixed magnet is connected to one side inside the housing. The movable magnet is slidably connected to the other side inside the housing, and the movable magnet and a moving contact are fixedly connected. The two ends of the first return spring are respectively connected to the fixed magnet and the movable magnet. The coil is wrapped around the outside of the movable magnet and the fixed magnet, and is used to drive the movable magnet to slide. The coil is electrically connected to a lead wire, which is exposed outside the housing.

3. The diesel engine emergency starting device according to claim 2, characterized in that: The end where the moving magnet and the moving contact are connected extends outward to form a joint, which is used to engage with the linkage assembly.

4. The diesel engine emergency starting device according to claim 2, characterized in that: The linkage assembly includes a flipping seat, a flipping rod, and a top post. The elastic reset assembly includes a limiting spring, a second reset spring, and a third reset spring. The bottom of the flipping seat is hinged to the drive arm. The bottom of the flipping rod is hinged to the flipping seat, and the top of the flipping rod is movably connected to the drive arm. One end of the top post abuts against one side of the flipping rod. The limiting spring is sleeved on the flipping rod, and the top end of the limiting spring is connected to the drive arm, and the bottom end of the limiting spring is connected to the bottom of the flipping rod. One end of the second reset spring is connected to the base, and the other end of the second reset spring is connected to the drive arm. One end of the third reset spring is connected to the moving contact, and the other end of the third reset spring is connected to the top post.

5. A diesel engine emergency starting device according to claim 4, characterized in that: The elastic force of the limiting spring is greater than that of the second reset spring.

6. A diesel engine emergency starting device according to claim 1 or 4, characterized in that: A transmission rod is fixedly connected to the top of the drive arm, and a handle ball is fixedly connected to the end of the transmission rod away from the drive arm.

7. A diesel engine emergency starting device according to claim 4, characterized in that: The elastic reset assembly also includes a guide rod fixed to the base, the guide rod passing through the drive arm and slidingly engaging with the drive arm, and a second reset spring sleeved on the guide rod.

8. A diesel engine emergency starting device according to claim 7, characterized in that: The base is integrally formed and includes a first extension, a second extension, and a third extension. The first extension is fixedly connected to the encapsulation shell. One end of the guide rod is fixedly connected to the second extension. The other end of the guide rod is sequentially connected to the third extension after passing through the second reset spring and the drive arm. The drive arm is hinged to the third extension.

9. A diesel engine emergency starting device according to claim 1, characterized in that: The first fixed contact is fixedly connected to the first terminal block, and the second fixed contact is fixedly connected to the second terminal block.

10. A diesel engine emergency starting device according to claim 1, characterized in that: It also includes a locking assembly, which comprises an arc-shaped slide groove, a guide groove, a third return spring, a limiting member, and a slider. The arc-shaped slide groove is located on the base and is positioned around the hinge point between the drive arm and the base. The guide groove is located on the base and communicates with the arc-shaped slide groove. The third return spring and the limiting member are both housed within the guide groove. The bottom end of the third return spring is connected to the guide groove, and the top end of the third return spring is connected to the limiting member. One side of the top end of the limiting member has a sloping structure, and the bottom of the limiting member has a handle that protrudes from the guide groove. The limiting member is used to restrict the movement of the slider. The slider is fixedly connected to one side of the drive arm and slidably connected to the arc-shaped slide groove.

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