Snow plough cabin locking device

Abstract

The application discloses a snow plough machine cabin locking device, which comprises two lock units capable of being locked with each other, the two lock units are respectively arranged on a machine cabin cover and a chassis, the two lock units are a first lock unit and a second lock unit, the first lock unit comprises a magnetic lock main lock capable of generating magnetism by power supply and a main lock mounting base for fixing the magnetic lock main lock, the magnetic lock main lock is connected with a power supply unit and a power-on switch; the second lock unit comprises a suction plate and a suction plate mounting base for fixing the suction plate, the suction plate is attracted to the magnetic lock main lock after being powered on; a limiting component capable of being engaged with each other is arranged between the first lock unit and the second lock unit, the limiting component comprises oppositely arranged limiting plates and a limiting seat, the limiting seat is provided with a protrusion, and the limiting plate is provided with a groove capable of being engaged with the protrusion. The application solves the problems that the existing locking device occupies large space, is difficult to arrange, cannot be applied to the reset of a small and medium-sized machine cabin turnover mechanism, and the machine cabin cover is easy to be displaced, thereby reducing the locking reliability.

Description

Technical Field

[0001] This invention relates to the field of specialized snow removal equipment manufacturing technology, and in particular to a snow removal vehicle engine compartment locking device. Background Technology

[0002] The snowplow's engine compartment is located at the front or middle of the chassis, primarily serving to protect components such as the engine, gearbox, reducer, and control system. Previous large three-in-one snowplows had ample chassis space, resulting in a longer overall engine compartment and a heavier engine cover. The engine cover was tilted using a hydraulic cylinder located within the engine compartment, and locking and unlocking were achieved using a hydraulic lock. This hydraulic lock consisted of a locking cylinder mounted on the engine cover and a lock seat, respectively, via mounting bases on the chassis connecting support. The lock seat had a insertion hole; the piston rod of the locking cylinder passed through this hole to lock the engine cover. This type of hydraulic lock requires hydraulic lines. While the ample space in a long engine compartment is more than sufficient for accommodating this type of hydraulic lock, in single-engine snowplows, due to the shorter overall size and more compact layout, the engine compartment is relatively short and lighter. The existing hydraulic locks used in large three-in-one snowplows, which require significant space for the locking cylinder and hydraulic lines, are too bulky and complex to be suitable for locking the resetting mechanism of the small to medium-sized engine compartment tilting mechanism in single-engine snowplows. Therefore, a new locking scheme needs to be considered. Furthermore, the lock seat hole of the aforementioned hydraulic lock is a round, oblong, or square hole larger than the diameter of the locking cylinder piston rod, allowing for smoother insertion of the piston rod. However, after prolonged opening and closing, the engine compartment cover is prone to shifting, reducing the reliability of the lock and causing abnormal noise. Summary of the Invention

[0003] The purpose of this invention is to provide a snowplow engine compartment locking device that can solve the problems of existing locking devices occupying a large space, being difficult to arrange, being unsuitable for resetting small and medium-sized engine compartment tilting mechanisms, and having reduced locking reliability due to easy displacement of the engine compartment cover.

[0004] To solve the above problems, the technical solution adopted by the present invention is as follows: This snowplow hood locking device includes two locking units that can lock together. The two locking units are respectively installed on the hood cover and the chassis. The two locking units are a first locking unit and a second locking unit. The first locking unit includes a magnetic lock main lock that is energized and magnetized, and a main lock mounting seat that fixes the magnetic lock main lock. The magnetic lock main lock is connected to a power supply unit and a power switch. The second locking unit includes a suction plate and a suction plate mounting seat that fixes the suction plate. The suction plate is attracted to the energized magnetic lock main lock. A mutually engaging limiting component is provided between the first locking unit and the second locking unit. The limiting component includes a limiting plate and a limiting seat that are arranged opposite to each other. The limiting seat has a protrusion, and the limiting plate has a groove that engages with the protrusion.

[0005] A more specific technical solution for the snowplow engine compartment locking device described above could be: the first locking unit is mounted on the chassis, and the second locking unit is mounted on the engine compartment cover.

[0006] Furthermore, the main lock mounting base of the first locking unit is fixed on the chassis connecting support beam of the chassis.

[0007] Furthermore, the suction plate mounting seat is fixed to the side beam of the cabin cover.

[0008] Furthermore, the protrusion is an upward-pointing cone with sloping sides and a rounded transition structure at the top. The groove is a V-shaped groove that matches the cone.

[0009] Furthermore, the power supply unit is a battery installed in the engine compartment, and the power switch is installed in the cockpit.

[0010] Furthermore, two sets of the first locking unit and the second locking unit are symmetrically arranged between the cabin cover and the chassis.

[0011] Furthermore, a reinforcing plate is provided on the suction plate mounting base.

[0012] Furthermore, the limiting plate is fixed to the suction plate mounting base.

[0013] Furthermore, the limiting plate is fixed to the side beam of the cabin cover, and the limiting plate is separated from the suction plate mounting seat.

[0014] By adopting the above technical solution, the present invention has the following advantages compared with the prior art:

[0015] 1. A suction plate and a magnetic lock main lock are respectively installed on the nacelle canopy and the chassis. The magnetic lock main lock is magnetized or demagnetized by the power supply unit and the power switch to lock and unlock the nacelle canopy. Taking advantage of the small space occupation, easy placement and sufficient strength to support small and medium weight nacelles, the magnetic lock is used to efficiently lock the reset of the tilting mechanism of small and medium-sized nacelles. By setting the limit component with protrusions and grooves, the locking device is firmly engaged, which improves the reliability of the lock and prevents the nacelle canopy from shifting and producing abnormal noise.

[0016] 2. The magnetic lock main lock is mounted on the chassis, which avoids the opening and closing of the engine compartment cover from affecting the external cables of the magnetic lock main lock, thus extending the service life of the device; the arrangement of each mounting base is reasonable and easy to install.

[0017] 3. The V-groove of the limiting plate matches the conical protrusion with the upper arc transition of the limiting seat, which can quickly align and lock, and ensure the reliability of the engagement.

[0018] 4. Utilizing the battery in the engine compartment as the power supply unit eliminates the need for a separate power source, reducing space occupation and lowering costs; installing the switch in the driver's cab improves ease of operation.

[0019] 5. Setting up two sets of first and second locking units can improve the reliability of locking. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the locked state of Embodiment 1 of the snowplow engine compartment locking device.

[0021] Figure 2 This is a schematic diagram of the unlocked state in Example 1.

[0022] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the snowplow engine compartment locking device.

[0023] Figure 4 This is the front view of Embodiment 2.

[0024] The following are the reference numerals: 1. Cabin cover; 2. Cabin cover side beam; 3. Reinforcing plate; 4. Suction plate mounting base; 5. Suction plate; 6. Magnetic lock main lock; 7. Main lock mounting base; 8. Limiting plate; 8-1. V-groove; 9. Limiting seat; 9-1. Protrusion; 10. Chassis connecting support beam. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0026] Example 1

[0027] Figure 1 and Figure 2The snowplow cabin locking device shown is used for the cabin of small and medium-sized snowplows that flip and reset. The cabin cover 1 flips open from the side upwards. The locking device is installed at the side opening and closing point. It includes two locking units that can be locked together by magnetic attraction and a limiting component that restricts the displacement of the cabin cover 1. The two locking units are respectively installed on the cabin cover 1 and the chassis of the snowplow. The two locking units are the first locking unit and the second locking unit. The first locking unit includes a magnetic lock main lock 6 that is energized and magnetized, and a main lock mounting base 7 that fixes the magnetic lock main lock 6. The main lock mounting base 7 is welded and fixed to the chassis connecting support beam 10. The magnetic lock main lock 6 is fixedly connected to the main lock mounting base 7 by bolts. The magnetic lock main lock 6 adopts a commercially available rectangular product. Its housing contains an iron core, a coil surrounding the iron core, and a circuit board. The coil is electrically connected to the circuit board. The circuit board enters the external cable connection of the power supply unit and the power switch through the wiring port of the housing. The power supply is a battery installed in the engine compartment. The power switch is a toggle switch located in the driver's cab. Moving the toggle switch can control the conduction and disconnection of the power supply circuit of the magnetic lock main lock 6, thereby energizing or demagnetizing the magnetic lock main lock 6. The second locking unit is installed on the cabin cover 1. The second locking unit includes a suction plate 5 and a suction plate mounting seat 4 for fixing the suction plate 5. The suction plate mounting seat 4 is welded and fixed to the side beam 2 of the cabin cover at the opening and closing end of the cabin cover 1. The welding position is at the front end of the cabin, which is a certain distance from the flipping point. The suction plate 5 is fixed to the suction plate mounting seat 7 by bolts. The suction plate mounting seat 7 is a flat plate with two triangular reinforcing plates 3 symmetrically arranged on the upper end face of the flat plate. The suction plate 5 is fixed to the lower end face of the flat plate. When the cabin cover 1 is reset and closed, the suction plate 5 is centered and directly above the magnetic lock main lock 6. A first locking unit, a second locking unit, and a limiting component are provided between the cabin cover 1 and the chassis. Alternatively, two sets of first locking units, second locking units, and limiting components can be symmetrically arranged between the cabin cover 1 and the chassis.

[0028] The limiting assembly includes a limiting plate 8 and a limiting seat 9 arranged opposite each other. Both the limiting plate 8 and the limiting seat 9 are made of sheet metal. The surface of the limiting plate 8 and the surface of the limiting seat 9 are perpendicular to each other. The limiting plate 8 is perpendicular to the side beam 2 of the snowplow cover. The limiting plate 8 has a groove, which is a V-shaped groove 8-1 that penetrates the plate body and faces downward. The limiting seat 9 has a protrusion 9-1 that engages with the V-shaped groove 8-1 of the limiting plate 8. The protrusion 9-1 is an upwardly oriented cone with inclined surfaces on both sides and a rounded transition structure at the top. In this embodiment, the limiting plate 8 is directly welded and fixed to the side beam 2 of the snowplow cover. The limiting plate 8 is separated from the suction plate mounting seat 4, and the corresponding limiting seat 9 is directly welded and fixed to the chassis connecting support beam 10. When the limiting plate 8 and the limiting seat 9 are engaged, the left and right movement of the snowplow cover 1 in the width direction can be restricted. Due to differences in spatial layout, the structures of the limiting components, the first locking unit, and the second locking unit will differ.

[0029] When the engine cover 1 needs to be lifted, the toggle switch is turned upwards, disconnecting the power circuit. The magnetic lock main lock 6 is de-energized and demagnetized, and the suction plate 5 is no longer attached to the magnetic lock main lock 6. The engine cover 1, in the unlocked state, is lifted and opened by the hydraulic cylinder tilting mechanism. The suction plate 5 and the limiting plate 9 detach from the magnetic lock as the engine cover 1 is lifted, allowing it to be tilted open. When the engine cover 1 needs to be closed, it tilts in the opposite direction and falls. When the engine cover 1 returns to its original position close to the chassis, the toggle switch is turned downwards, connecting the power circuit. The magnetic lock main lock 6 is energized and becomes magnetic. The suction plate 5 is attached to the magnetic lock main lock 6 under magnetic force. At the same time, the V-groove 8-1 of the limiting plate 8 engages with the protrusion 9-1 of the limiting seat 9, completing the limiting and preventing the engine cover 1 from shifting. The suction plate 5 is cushioned by magnetism within the magnetic field to reduce impact, and the magnetic surfaces of the suction plate 5 and the magnetic lock main lock 6 are in contact.

[0030] Example 2

[0031] like Figure 3 and Figure 4 As shown, in this embodiment, the limiting plate 8 of the limiting component is welded and fixed to the suction plate mounting base 4. The suction plate 5 replaces the mounting position of the reinforcing plate 3 in Embodiment 1. The limiting base 9 is also welded and fixed to the chassis, located directly below the limiting plate 8. The main lock mounting base 7 is modified according to the chassis structure. The main lock mounting base 7 has a side plate located on the side opposite to the limiting base 9. The upper edge of the side plate is higher than the interface where the suction plate 5 and the magnetic lock main lock 6 are attached. The remaining features are the same as in Embodiment 1.

Claims

1. A snowplow engine compartment locking device, comprising two locking units capable of locking each other, wherein the two locking units are respectively mounted on the engine compartment cover and the chassis, characterized in that: The two locking units are a first locking unit and a second locking unit. The first locking unit includes a magnetic lock main lock that is magnetized by electricity and a main lock mounting base for fixing the magnetic lock main lock. The magnetic lock main lock is connected to a power supply unit and a power switch. The second locking unit includes a suction plate and a suction plate mounting base for fixing the suction plate. The suction plate is attracted to the magnetic lock main lock after it is energized. A mutually engaging limiting component is provided between the first locking unit and the second locking unit. The limiting component includes a limiting plate and a limiting seat arranged opposite to each other. The limiting seat has a protrusion, and the limiting plate has a groove that engages with the protrusion. The locking unit is mounted on the chassis, and the second locking unit is mounted on the nacelle cover; the main lock mounting seat of the first locking unit is fixed on the chassis connecting support beam of the chassis; the suction plate mounting seat is fixed on the side beam of the nacelle cover; the protrusion is an upwardly oriented cone with inclined surfaces on both sides and a rounded transition structure at the upper end of the cone; the groove is a V-shaped groove that matches the cone; the power supply unit is a battery installed in the nacelle, and the power switch is installed in the cockpit; two sets of the first locking unit and the second locking unit are symmetrically arranged between the nacelle cover and the chassis.

2. The snowplow engine compartment locking device according to claim 1, characterized in that: The suction plate mounting base is equipped with a reinforcing plate.

3. The snowplow engine compartment locking device according to claim 2, characterized in that: The limiting plate is fixed to the suction plate mounting base.

4. The snowplow engine compartment locking device according to claim 3, characterized in that: The limiting plate is fixed to the side beam of the cabin cover, and the limiting plate is separated from the suction plate mounting seat.

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