CN108974161A - A kind of emergency repair vehicle of Urban flood - Google Patents

Abstract

The invention belongs to the technical field of rescue vehicles, and in particular relates to an emergency rescue vehicle for urban floods, which includes a chassis and a vehicle head arranged on the chassis, the chassis includes an upper chassis and a lower chassis, and the vehicle head is arranged on the upper chassis , the lower chassis is connected with a traveling mechanism, the upper chassis and the lower chassis are connected through a lifting device, and the lifting device can realize the lifting of the upper chassis, and the traveling mechanism adopts a hydraulic crawler walking mechanism, and the lifting device The lifting device adopts hydraulic lifting mechanism. The traveling mechanism adopts a hydraulic crawler traveling mechanism to ensure that it has good wading ability. The head of the car is set on the upper chassis, and the upper part can be lifted by a lifting device, so that the head and the upper chassis are above the water surface, ensuring normal operation of the staff.

Description

A kind of emergency rescue vehicle for urban flood

technical field

The invention belongs to the technical field of rescue vehicles, and in particular relates to an emergency rescue vehicle for urban floods.

Background technique

With the arrival of summer, the rainfall increases. During heavy rains, there is a large amount of accumulated water on urban roads, which leads to flooding.

The hydraulic walking structure has good wading ability. The crawler tracks of some excavators are driven by hydraulic motors, which can work in mud and water. At the same time, the positional relationship between the vehicle frame and the hydraulic traveling structure can be adjusted due to the hydraulic drive of the vehicle adopting the hydraulic traveling mechanism. For example: the invention patent with the patent application number 201711396853.1 discloses a fully hydraulic crawler road slope compaction device. Move or work on larger slopes.

In order to improve the rescue capability, flood rescue vehicles came into being. Existing flood rescue vehicles have certain limitations, such as insufficient movement performance in water and poor adhesion performance. At the same time, most of the existing rescue vehicles are driven by engines, and their wading ability is limited.

Contents of the invention

In view of the above technical problems, the present invention provides an emergency rescue vehicle for urban floods. The vehicle has good water wading capability, and the chassis can be lifted to ensure that the working surface of the vehicle is on the water surface.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

An emergency rescue vehicle for urban floods, comprising a chassis and a vehicle head arranged on the chassis, the chassis includes an upper chassis and a lower chassis, the vehicle head is arranged on the upper chassis, and the lower chassis is connected with a running mechanism, The upper chassis and the lower chassis are connected by a lifting device, and the upper chassis can be lifted by the lifting device. The traveling mechanism adopts a hydraulic crawler traveling mechanism, and the lifting device adopts a hydraulic lifting mechanism.

The lifting device includes a pillar and an oil cylinder, the pillar is arranged on the lower chassis, the upper chassis is slidingly connected with the pillar, the oil cylinder is connected with the upper chassis, and the upper chassis slides along the pillar through the expansion and contraction of the oil cylinder.

The cylinder body of the oil cylinder is connected with the upper chassis, and the piston rod of the oil cylinder is hinged with the lower chassis.

A fastener is provided between the pillar and the lower chassis, and the two ends of the fastener are respectively connected with the pillar and the lower chassis, which can improve the stability of the connection.

The front end of the lower chassis is provided with a front fender.

The upper chassis is provided with a truck-mounted crane mechanism.

Compared with the prior art, the present invention has the beneficial effects of:

The traveling mechanism adopts a hydraulic crawler traveling mechanism to ensure that it has good wading ability. The head of the car is set on the upper chassis, and can be lifted by a lifting device, so that the head of the car and the upper chassis are above the water surface to ensure work normal operation of personnel.

Description of drawings

Fig. 1 is the general assembly front view of the present invention;

Fig. 2 is the general assembly side view of the present invention;

Fig. 3 is the general assembly plan view of the present invention;

Fig. 4 is a structural diagram of the fixed-axis planetary reducer adopted in the present invention;

Fig. 5 is a front view of the chassis lifting device of the present invention;

Fig. 6 is a top view of the chassis lifting device of the present invention;

Fig. 7 is the sectional view of A-A place among Fig. 6;

Fig. 8 is a working principle diagram of the hydraulic system of the chassis lifting device of the present invention;

Fig. 9 working principle diagram of the hydrostatic system of the traveling mechanism of the present invention;

Among them: 1 is the walking mechanism, 2 is the lower chassis, 3 is the upper chassis, 4 is the cargo platform, 5 is the lifting device, 6 is the truck-mounted crane mechanism, 7 is the head of the car, 8 is the front baffle, 9 is Support, 10 is a fastener, 11 is a ball seat, 12 is an oil cylinder, 13 is the first oil cylinder, 14 is the second oil cylinder, 15 is the third oil cylinder, 16 is the fourth oil cylinder, and 17 is the three-position four-way electromagnetic switch 18 is the first oil tank, 19 is the one-way valve, 20 is the relief valve, 21 is the second oil tank, 22 is the driving motor, 23 is the hydraulic pump, 24 is the third oil tank, 25 is the variable pump and the adjustment mechanism , 26 is the variable motor and the adjustment mechanism, 27 is the safety valve, 28 is the one-way valve, 29 is the oil filling relief valve, 30 is the control valve, 31 is the relief valve 1, 32 is the oil filter, 33 is the supplementary valve Oil pump, 34 is a diesel engine, 35 is a speed reducing device, and 36 is a crawler track drive sprocket.

Detailed ways

The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1 to 3, a kind of emergency rescue vehicle for urban floods includes a chassis and a vehicle head 7 arranged on the chassis. The chassis includes an upper chassis 3 and a lower chassis 2, and the vehicle head 7 is arranged on the upper chassis 3. The lower chassis 2 is connected with a traveling mechanism 1, and the upper chassis 3 and the lower chassis 2 are connected through a lifting device 5. The lower chassis 2 can be used as a support surface, and the upper chassis 3 can be lifted up and down through the lifting device 5. The traveling mechanism 1 can use A hydraulic crawler traveling mechanism in the prior art. The upper chassis 3 can adopt a common frame structure, which is provided with a crossbeam structure, and the rigidity of the entire vehicle frame is guaranteed by the crossbeam.

The traveling mechanism 1 and the lifting device 5 are respectively connected with a hydraulic system, which provides power through the hydraulic system, and the hydraulic system is arranged on the upper chassis 3 . The specific structural composition and connection of the hydraulic system are well known to those skilled in the art, and can be appropriately adjusted according to actual conditions, so a brief description is given here.

The hydraulic system connected by traveling mechanism 1:

There are four running gears 1, two of which are respectively arranged on both sides of the lower chassis 2, which are four-wheel drives, and have matching control valves and hydraulic motors. The hydraulic motor is connected with the driving wheel in the traveling mechanism 1, and the hydraulic motor drives the track to move through the driving wheel. Considering that a power source with relatively large power is required, a diesel engine in the prior art is selected as the power device. The output shaft of the diesel engine is connected with the hydraulic pump to provide power for it.

The power route of the walking device is diesel engine-hydraulic pump-control valve-hydraulic motor-driving wheel-track. Both the hydraulic pump and the hydraulic motor are connected to the control valve, specifically: the hydraulic pump and the control valve are connected by a hydraulic pipeline, and the control valve and the hydraulic motor are connected by a hydraulic pipeline. As shown in Fig. 9, it is a diagram of the hydrostatic system of the traveling mechanism with one side and one wheel.

During specific operation, adjusting the displacement of the variable pump and the adjustment mechanism 25 can change the flow size and direction of the system, and the size and direction of the motor output speed can be changed; by controlling and adjusting the displacement of the variable motor and the adjustment mechanism 26, it can be When the external load of the system changes, the system pressure remains basically unchanged; this system adopts a closed oil circuit, high and low pressure can be interchanged, and is equipped with two safety valves 27 and two check valves - 28; the charge pump 33 passes through the one-way Valve one 28 supplies oil to the low-pressure line to provide the control pressure of the variable control mechanism. Further, considering the output stability, structural layout, transmission ratio and transmission efficiency of the reducer, the present invention adopts a fixed-axis planetary reducer, the input shaft of the reducer 35 is connected with the output shaft of the variable motor 26, and the output of the reducer 35 The shaft is connected to the track drive sprocket 36 (drive wheel).

The lifting device 5 adopts a hydraulic lifting mechanism, such as a scissor lifting mechanism, and can also be used: it includes a pillar 9 and an oil cylinder 12. The pillar 9 is arranged on the lower chassis 2, and the lower end of the pillar 9 is fixedly connected to the side of the lower chassis 2. The chassis 3 is slidingly connected with the pillar 9, and the oil cylinder 12 is connected with the upper chassis 3, and the sliding of the upper chassis 3 along the pillar 9 is realized through the expansion and contraction of the oil cylinder 12.

As shown in Figures 5-7, specifically: the cylinder body of the oil cylinder 12 can be connected with the lower chassis 2, the piston rod of the oil cylinder 12 can be connected with the upper chassis 3, the cylinder body and the piston rod of the oil cylinder 12 can be connected with the lower chassis 2 and the upper chassis 3 can be connected and fixed by means of bolts or the like. Certainly, the cylinder body of the oil cylinder 12 can also be connected with the upper chassis 3, and the piston rod of the oil cylinder 12 is hinged with the lower chassis 2, which can be articulated by means of a ball hinge. The end of the piston rod is provided with a ball head, and the lower chassis 2 is provided with a ball head seat 11 matched therewith.

A fastener 10 is provided between the pillar 9 and the lower chassis 2, and the two ends of the fastener 10 are respectively connected with the pillar 9 and the lower chassis 2 (welding may be used), which can improve the stability of the connection.

The number of lifting devices 5 can be adjusted according to the actual situation, preferably there are four, and two are respectively arranged on both sides of the lower chassis 2 . The four oil cylinders 12 (respectively the first oil cylinder 13, the second oil cylinder 14, the third oil cylinder 15, and the fourth oil cylinder 16) are controlled by a hydraulic system, and the specific structural composition and connection of the hydraulic system are well known to those skilled in the art and can be adjusted according to the actual situation, so here is a brief description.

The hydraulic system connected to the lifting device 5:

As shown in Figure 8, the four oil cylinders 12 are connected in series between the rod chamber and the rodless chamber through the hydraulic pipeline, which can ensure the smooth rise or fall of the lifting device 5, and the speed regulation is convenient and the speed regulation range is wide. big. Through the three-position four-way electromagnetic reversing valve 17 in the hydraulic system, the oil inlet and oil return paths of the hydraulic oil can be changed, thereby realizing the movement of the oil cylinder 12 . The hydraulic oil in the oil return line flows back into the first oil tank 18 .

A one-way valve 19 is arranged on the oil outlet pipeline of the hydraulic pump 23 to prevent the backflow of hydraulic oil. The oil outlet of the one-way valve 19 is provided with a relief valve 20 to prevent the oil pressure of the hydraulic line from being too high, and the overflowed hydraulic oil flows into the second oil tank 21 .

The driving motor 22 is connected with the hydraulic pump 23 to provide power; the low-pressure oil in the third oil tank 24 is converted into high-pressure oil and input into the hydraulic pipeline to provide power for the oil cylinder 12 .

The front end of the lower chassis 2 is provided with a front fender 8 . The upper chassis 3 is provided with a truck-mounted crane mechanism 6, and the truck-mounted crane mechanism 6 adopts a structure in the prior art. The upper surface of the upper chassis 3 can be provided with a loading platform 4 for transporting rescue materials. During work, the height of the upper chassis 3 can be raised and lowered by manipulating the lifting device 5 depending on the environmental conditions, so as to ensure that the working surface of the vehicle is on the water surface.

Only the preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the above-mentioned embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various modifications can also be made without departing from the gist of the present invention. Various changes should be included within the protection scope of the present invention.

Claims (6)

1. An emergency rescue vehicle for urban floods, comprising a chassis and a vehicle head (7) arranged on the chassis, characterized in that: the chassis includes an upper chassis (3) and a lower chassis (2), and the vehicle head (7) Set on the upper chassis (3), the lower chassis (2) is connected with a traveling mechanism (1), and the upper chassis (3) and the lower chassis (2) are connected through a lifting device (5) , the upper chassis (3) can be lifted up and down through the lifting device (5), the traveling mechanism (1) adopts a hydraulic crawler traveling mechanism, and the lifting device (5) adopts a hydraulic lifting mechanism. 2. The emergency rescue vehicle for urban floods according to claim 1, characterized in that: the lifting device (5) includes a pillar (9) and an oil cylinder (12), and the pillar (9) is arranged on the bottom On the chassis (2), the upper chassis (3) is slidingly connected to the pillar (9), and the oil cylinder (12) is connected to the upper chassis (3). Through the expansion and contraction of the oil cylinder (12), the upper chassis (3) is (9) Swipe. 3. An emergency rescue vehicle for urban floods according to claim 2, characterized in that: the cylinder body of the oil cylinder (12) is connected to the upper chassis (3), and the piston rod of the oil cylinder (12) is connected to the lower chassis (2) ) hinged. 4. The emergency rescue vehicle for urban floods according to claim 2, characterized in that: a fastener (10) is provided between the pillar (9) and the lower chassis (2), and the fastener ( The two ends of 10) are respectively connected with the pillar (9) and the lower chassis (2), which can improve the stability of the connection. 5. The emergency rescue vehicle for urban flood according to claim 1, characterized in that: the front end of the lower chassis (2) is provided with a front fender (8). 6. The emergency rescue vehicle for urban flood according to claim 1, characterized in that: the upper chassis (3) is provided with a vehicle-mounted crane mechanism (6).