CN211231093U - Automobile hydraulic tail board - Google Patents

Abstract

The utility model discloses a car hydraulic pressure tailboard relates to automobile manufacturing technical field, include the panel and be used for going up and down the support assembly of this panel, be equipped with a set of lift hydro-cylinder and a set of upset hydro-cylinder on the support assembly, one of them lift hydro-cylinder is equipped with normally closed solenoid valve in its oil inlet department, and is equipped with normally closed solenoid valve lift hydro-cylinder opposite one side the normally closed solenoid valve is equipped with in its oil inlet department to the upset hydro-cylinder, compares with prior art, the utility model discloses normally closed solenoid valve is equipped with in the oil inlet department of lift hydro-cylinder and upset hydro-cylinder, when the vehicle is in the transport state, when the high pressure fuel pipe that is equipped with normally closed solenoid valve takes place to break, folds up the hydraulic pressure tailboard of laminating on the carriage back door.

Description

Automobile hydraulic tail board

Technical Field

The utility model belongs to the technical field of the automobile manufacturing technique and specifically relates to an automobile hydraulic pressure tailboard.

Background

The automobile tail plate is also called an automobile hydraulic tail plate, an automobile loading and unloading tail plate, a hoisting tail plate, a hydraulic automobile tail plate and a truck tail plate, and is hydraulic hoisting loading and unloading equipment which is arranged at the tail parts of trucks and various vehicles and takes a vehicle-mounted storage battery as a power source; the van vehicle with the additional tail plate is not limited by sites, equipment and manpower when loading and unloading goods, and can finish the goods loading and unloading even if only one person is used, the tail plate loading and unloading have the characteristics of high loading and unloading speed, safety and high efficiency, the transportation and loading and unloading efficiency can be greatly improved, the cost is saved, and the van vehicle is one of necessary equipment for modern logistics transportation. Traditional hydraulic pressure tailboard is installed at the carriage afterbody, including the panel that is used for accepting the goods and the support assembly that is used for lift panel, the one end and the panel of support assembly are articulated, and the other end is used for being connected with the vehicle, and the support assembly is equipped with support hydraulic drive mechanism and panel hydraulic drive mechanism, and the tailboard of structure like this, in transportation or handling goods in-process, when high pressure fuel pipe takes place to break, the hydro-cylinder loses the effect, and the tailboard can fall rapidly, easily causes the damage of tailboard.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem that a car hydraulic pressure tailboard is provided, can solve in the transportation goods process, the problem of the security performance of tailboard when the hydro-cylinder breaks suddenly.

In order to solve the above problem, the utility model discloses a technical scheme is: the lifting oil cylinder lifting mechanism comprises a panel and a support assembly used for lifting the panel, wherein the support assembly is provided with a group of lifting oil cylinders and a group of overturning oil cylinders, one of the lifting oil cylinders is provided with a normally closed electromagnetic valve at an oil inlet, and the overturning oil cylinder on the side opposite to the lifting oil cylinder provided with the normally closed electromagnetic valve is provided with a normally closed electromagnetic valve at an oil inlet.

In the above technical solution of the automobile hydraulic tailgate, a more specific technical solution may also be: the normally closed electromagnetic valve is a normally closed plug-in mounting electromagnetic valve.

Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:

1. because the normally closed solenoid valves are arranged at the oil inlets of the lifting oil cylinder and the overturning oil cylinder, when a vehicle is in a transportation state and a high-pressure oil pipe connected with the normally closed solenoid valves breaks, the hydraulic tail plate folded and attached to the rear door of the carriage cannot fall off, and accidents are avoided.

2. Because the utility model discloses oil inlet department at lift cylinder and upset hydro-cylinder is equipped with explosion-proof valve, and when at the goods handling in-process, when the pipeline of advancing explosion-proof valve takes place to explode, explosion-proof valve seals the oil of hydro-cylinder immediately, and the tail-gate panel will stop on the pipeline breaks momentary position to prevent that the tailboard from dropping suddenly and causing the occurence of failure of tailboard and goods damage.

Drawings

Fig. 1 is a schematic structural diagram of a state side of the present invention.

Fig. 2 is a schematic structural diagram of the state side of the present invention.

Fig. 3 is a schematic structural diagram of a normally closed solenoid valve.

Fig. 4 is a schematic structural diagram of the explosion-proof valve of the present invention.

Description of the sequence numbers:

the anti-explosion valve comprises a panel 1, a lifting oil cylinder 2, a normally closed electromagnetic valve 3, a hollow bolt 3-1, a valve body 3-2, a coil 3-3, a power line 3-4, a transition joint 3-5, a square steel support 4, a turnover oil cylinder 5, a pressure cylinder 6, an anti-explosion valve 7, a valve body 7-1, a valve core 7-2, a valve rod 7-3, an anti-slip nut 7-4, a valve plate 7-5, a channel 7-6, a spring hole 7-7, a spring 7-8 and a lifting arm 8.

Detailed Description

The invention will be described in more detail with reference to the following embodiments:

as shown in fig. 1-2, the lifting tail plate of the present embodiment comprises a panel 1 and a bracket assembly for lifting the panel, a square steel support 4 transversely arranged of the support assembly is connected with an automobile beam through a support connecting plate, a high-pressure oil pipe is arranged in the square steel support 4, a group of lifting arms 8, a group of lifting oil cylinders 2 and a group of overturning oil cylinders 5 which are connected with a panel 1 are arranged on the square steel support 4, the panel 1 is hinged with a carriage bottom plate, the overturning oil cylinders 5 are arranged on the outer sides of the lifting arms 8, the lifting oil cylinders 2 are arranged on the inner sides of the lifting arms, as shown in fig. 1, the lifting oil cylinder 2 on the left side is provided with an explosion-proof valve 7 at the oil inlet thereof, the overturning oil cylinder 5 on the left side is provided with a normally closed electromagnetic valve 3 at the oil inlet thereof, the lifting oil cylinder 2 on the right side is provided with the normally closed electromagnetic valve 3 at the oil inlet thereof, and the overturning oil cylinder 5 on the right side is provided with the explosion-proof valve 7 at the oil inlet thereof; as shown in fig. 3, the normally closed electromagnetic valve used in this embodiment is a normally closed plug-in solenoid valve, a valve body 3-2 of the normally closed electromagnetic valve is provided with a coil 3-3, the coil is communicated with a power supply through a power line 3-4, an oil outlet of the normally closed electromagnetic valve is provided with a hollow bolt 3-1, the hollow bolt 3-1 is connected with an oil inlet of an oil cylinder, an oil inlet of the electromagnetic valve is provided with a transition joint 3-5, and the transition joint is connected with a high-pressure oil pipe; when the tail plate loads and unloads goods, the normally closed electromagnetic valve is electrified and is in an open state, so that the normal circulation of an oil way can be ensured; when the tail plate is used, the power supply is turned off, the tail plate is folded and overlapped on the carriage back door in the transportation process, the normally closed electromagnetic valve is closed, the oil way is in a closed state, and at the moment, if the high-pressure oil pipe connected with the transition joint 3-5 is broken, the hydraulic tail plate can keep the current state and cannot fall off, so that the safety of the tail plate is ensured.

As shown in fig. 4, the explosion-proof valve is a tubular explosion-proof valve, and comprises a valve body 7-1, a valve core 7-2 is fixed in a mounting through hole of the valve body, the outer diameter of the valve core 7-2 is smaller than the inner diameter of the valve body 7-1, a channel 7-6 for the hydraulic oil to travel is reserved between the valve core and the inner wall of the valve body, a valve rod 7-3 is inserted in an inner hole of the valve core, the end of the valve rod 7-3 extending in the valve body 7-1 is screwed with an anti-slip nut 7-4, and the anti-slip nut is abutted against the end of the valve core 7-; the end of the valve rod end extending out of the valve body 7-1 is connected with a valve plate 7-5, the diameter of the valve plate is larger than the inner diameter of the valve body 7-1, when a pipeline is suddenly broken, the valve plate is used for closing a channel 7-6, and an oil path flow channel is sealed, so that a tail gate panel can be guaranteed to stay at the position of the pipeline at the moment of breakage, and the accident that the tail gate and goods are damaged due to sudden falling of the tail gate is prevented; a spring hole 7-7 communicated with the inner cylinder of the valve core is arranged in the end of the valve core 7-2, which is flush with the valve body, the inner diameter of the spring hole is larger than that of the inner hole of the valve core, a spring 7-8 is sleeved outside the valve rod 7-3, one end of the spring is abutted against the bottom end of the spring hole, and the other end of the spring is abutted against the inner side of the valve plate 7-5; in the figure 3, the port A is connected with an oil inlet of a lifting oil cylinder or a turnover oil cylinder, the port B is connected with a high-pressure oil pipe, under the condition of normal use, the pressure difference of a valve port of a valve plate cannot exceed the spring force, the valve plate leaves a valve seat under the action of the spring force, and the valve port can maintain a certain opening degree, so that normal oil passing can be ensured under the condition. If the pipeline connected with the port B is broken, the flow from the end A to the end B is increased sharply, when the flow resistance of the oil passage 7-6 exceeds the spring force, the valve core is closed immediately, the load stays at the position of the pipeline at the moment of breakage, and the hydraulic oil can not normally circulate until the end B recovers the normal pressure.

Claims (2)

1. The utility model provides an automobile hydraulic pressure tailboard, includes panel (1) and is used for going up and down the support assembly of this panel, be equipped with a set of lift cylinder (2) and a set of upset hydro-cylinder (5) on the support assembly, its characterized in that: one of the lifting oil cylinders is provided with a normally closed electromagnetic valve (3) at an oil inlet, and the overturning oil cylinder (5) at the side opposite to the lifting oil cylinder provided with the normally closed electromagnetic valve is provided with the normally closed electromagnetic valve (3) at the oil inlet.

2. The automotive hydraulic tailgate according to claim 1, characterized in that: the normally closed electromagnetic valve (3) is a normally closed plug-in electromagnetic valve.

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