CN201729630U - Expander device - Google Patents

Abstract

An expander device, comprising a support mechanism for expanding and deforming a vehicle body and a power mechanism for providing expansion power to the support mechanism, and the power mechanism is composed of a portable air pump and a storage battery for powering the air pump; The lower end of the support mechanism is slidably arranged in the cylinder body, an air bag is arranged between the bottom surface of the support mechanism and the bottom surface of the cylinder body, and the air pump in the power mechanism inflates the air bag through the air delivery pipe; The supporting block of the deformed vehicle body is telescopically arranged on the upper end of the supporting mechanism. The dilator stroke of the utility model is composed of a screw transmission stroke and an airbag push stroke, and has a large stroke, a stable power source support, a small size, a light weight, simple manufacturing process, convenient installation and disassembly, and low cost.

Description

A dilator device

technical field

The utility model relates to a rescue device used after a car accident occurs, in particular to an expander used for self-rescue of people in the car.

Background technique

Cars are one of the most important means of transportation. Traffic accidents are often caused by drivers’ illegal driving, slippery roads and pedestrians’ failure to obey traffic rules during driving, and major traffic accidents are likely to cause the occupants of the car to be arrested. The deformed seat or frame is pressed down. In this case, if the occupants of the car cannot escape in a short time, it will not only delay the timing of medical treatment, but also cause secondary injuries. Therefore, there is a need for a car accident when the self-rescue device.

At present, the existing self-rescue devices used for automobile accidents generally have certain defects, such as a commonly used airbag jack, which includes an airbag and a power source. The power source is high-pressure gas and is supplied by a special air supply device. Set the airbag on the side of the deformed frame or seat, and input high-pressure gas through the power source to expand the airbag, thereby pushing away the frame or seat in the deformed position of the car, so that the feet and body of the human body can no longer be under pressure , and detached from the body. But because its gap is very small after people's legs or health are suppressed, just can make people be rescued after the car body of deformation must be opened enough big space, and the stroke of this air bag type jack is very little, and after it is inflated The height of the air cushion cannot support a large enough escape space, and the air supply device attached to it is too bulky. When the occupants are stuck, these devices cannot be used normally at all, so it cannot meet the requirements of self-rescue. Another example is another car self-rescue airbag, which is an inflatable airbag installed under the chassis of the car. The air inlet of the airbag is connected with the exhaust gas outlet of the car. stand up. However, after a major car accident, the car may not be able to start the engine normally, so that the airbag cannot be supported by a reliable power source, and the purpose of expanding the vehicle frame cannot be achieved, so the rescue requirement cannot be met. In addition, there are some equipment used for rescue, such as large-scale lifting airbags. This kind of airbag uses a large area of support surface to realize the lifting function, but its volume is too large and its weight is very heavy, so it can only be used for lifting large-scale airbags. Ships, buildings, etc. are not suitable for use by cars; there is also a kind of rescue equipment, in order to solve the problem of power source, it is provided with high-pressure gas cylinders on the car, and the air bags are inflated by high-pressure gas cylinders, but this high-pressure gas cylinder is long The safety and airtightness after time placement cannot be guaranteed, so it is difficult for the equipment to achieve the expected effect after the accident, and the airbag cannot be fixed in a specific position during use, and the stability is poor, so this equipment is also Can not satisfy the requirement of carrying out self-rescue after automobile accident takes place.

Utility model content

In view of the above-mentioned deficiencies in the prior art, the main purpose of this utility model is to solve the problem that the stroke of the support mechanism of the self-rescue device currently used in automobiles is too small to expand a large enough escape space, and further solve the problem of the traditional expansion The size and weight of the device are too large to be inconvenient to use, and the problem of lack of power source support is provided, and a dilator device with a larger stroke, smaller size and weight, and sufficient power source support is provided.

The technical solution of the present utility model: an expander device, which is characterized in that it includes a support mechanism for expanding and deforming the vehicle body and a power mechanism for providing expansion power to the support mechanism, and the power mechanism is composed of an air pump and The storage battery used to supply power to the air pump is composed of; the lower end of the support mechanism is slidably arranged in the cylinder body, and an air bag is arranged between the bottom surface of the support mechanism and the bottom surface of the cylinder body, and the air pump in the power mechanism supplies the air bag through the air delivery pipe. Inflating: the support mechanism includes a support block for supporting the deformed vehicle body, and the support block is telescopically arranged on the upper end of the support mechanism.

The support mechanism also includes a piston, which is slidably arranged in the cylinder body; an upwardly protruding bearing cover is fixed on the upper end of the piston, and a cavity is formed between the bearing cover and the piston, and a cavity is formed between the bearing cover and the piston. There is an upper positioning ring and a lower positioning ring inside, and a thrust bearing is fixed between the upper positioning ring and the lower positioning ring, the upper positioning ring is pressed against the bearing cap, and the lower positioning ring is pressed against the piston; The piston rod passes through the upper positioning ring from the top of the bearing cover and then extends into the cavity. The lower end of the piston rod is pressed against the upper surface of the thrust bearing. A rotating shaft is fixed on the bottom of the piston rod, and a positioning A block is also fixed at the lower end of the rotating shaft, and the positioning block is stuck between the lower surface of the thrust bearing and the block; a synchronous pulley is fixed on the upper end of the piston rod, and a The motor powered by the battery is equipped with a runner on the shaft of the motor, and the runner drives the synchronous pulley through the belt to drive the piston rod to rotate; the piston rod is a cylindrical structure with an open upper end, and the screw rod is inserted into the piston rod And it is threadedly connected with the piston rod, and the upper end of the screw rod is connected with the supporting block.

Working principle of the utility model:

During use, the support mechanism is first taken out and placed on the deformed car body or seat. Since the size of the support mechanism of the utility model is less than 11 cm, it can be easily put into the deformed car body gap. Then press the motor switch, press the support block at the upper end of the support mechanism and the bottom of the cylinder body at the lower end of the support mechanism respectively against the deformed part of the car body through synchronous belt transmission and screw transmission, and then turn on the air pump switch after releasing the motor switch. Inflate the airbag through the air pipe, and the airbag will gradually expand, thereby lifting the support mechanism to move upward to stretch the deformed car body; the motor drives the synchronous pulley to rotate through the runner, because the synchronous pulley and the piston rod are fixedly connected, so the piston The rod also rotates synchronously to make the screw move, so there will be an upward and downward force between the piston rod and the screw rod; the piston rod nut is subjected to a downward force, but because the lower end of the piston rod is resisted by the thrust bearing, the piston rod It cannot move downward but can only rotate at the original position, and the screw rod is subjected to an upward force, so the screw rod will protrude upward and drive the support block at the upper end to move. In this way, the support block expands and pushes away the vehicle body at the deformed part under the combined force of the upward movement of the screw rod itself and the upward movement of the support mechanism as a whole driven by the expansion of the air bag. When the expander combining the above two expansion methods is used, it can exert a greater force on the vehicle body at the deformed part, and at the same time, the stroke of the support block is also significantly increased, which can basically achieve double the original stroke. Double the distance, it can provide a larger escape space for the trapped people when they rescue themselves.

When retracting the support block, just turn off the air pump switch and reverse the motor, at this time the air bag will automatically deflate, so that the support mechanism will descend; at the same time, the motor's runner drives the synchronous pulley to rotate in reverse, and the piston rod also rotates in reverse , the screw will be retracted into the piston rod by downward force, thus returning the dilator to its pre-use state. The motor of the utility model can be driven by a storage battery, or can be driven by a vehicle-mounted storage battery. The switch of the motor can be arranged on the support block, so that it is convenient to start the switch in an emergency.

Further, the airbag is a double-layer structure consisting of an inner liner made of rubber material and a jacket made of nylon cloth, and talcum powder is also arranged between the inner liner and the jacket of the airbag. The double-layer mechanism can prevent the airbag from being broken during operation, and the function of talcum powder is to prevent the inner liner and outer cover of the airbag from sticking together when folded.

Further, a spherical hinge is provided at the lower end of the supporting block, and the supporting block is movably connected with the screw through the spherical hinge. After the spherical hinge is set, the support block can be turned flexibly, which makes it more convenient to align the upper end surface of the support block with the force-bearing position of the vehicle body, making the positioning of the support mechanism more accurate during expansion, and the expanded space position can satisfy personnel escape demand.

Further, a ball bearing is provided at the top of the cylinder, and the synchronous pulley is rotatably matched with the cylinder through the ball bearing, and a pulley cover is also fixed at the top of the cylinder, and the synchronous pulley is arranged in the pulley cover . The synchronous pulley can be protected by the pulley cover to prevent the synchronous pulley from being stuck or worn by external objects during rotation. In addition, the ball bearing can not only support the synchronous pulley, but also prevent the synchronous pulley from When turning, it tilts to both sides, so that the timing pulley remains coaxial with the central axis of the piston rod at all times.

Compared with the prior art, the utility model has the following advantages:

1. The stroke of the supporting mechanism is relatively large: the airbag dilator of the present utility model adopts a structure combining an airbag and a telescopic supporting mechanism. When the airbag is inflated, the supporting mechanism can be lifted and moved upwards, thereby realizing the expansion of the supporting mechanism Open the deformed frame or seat; at the same time, the screw inside the support mechanism can also be rotated and stretched out under the drive of the motor, which further prolongs the stroke of the entire expander, enabling the expander to support in a narrow space Create a large enough escape space to help people escape from the damaged vehicle body.

2. Supported by a stable power source: the utility model uses a battery-driven air pump as the power source of the expander, and the power source is placed in the middle of the front seat or under the rear seat of the car, so that the automatic The method with a power source can effectively solve the problem of lack of power source; and because the battery and the air pump are mature equipment, they will not fail due to being placed for a long time, and they also have a variety of models, so you can choose one with a smaller volume and weight. A small battery and an air pump are combined to form a power source, so that the volume and weight of the power source can be better controlled to meet the needs of placement and use in a small space in the car.

3. Small size and light weight: the expander of the utility model takes into account the small gap between the legs or body of the squeezed person and the frame, so the size and weight of the supporting mechanism are strictly controlled. At the same time, the support mechanism is required to provide a large enough support force, so that the output power of the power source, the stroke of the support mechanism and its own weight can be perfectly matched, so that it is convenient for people to use for self-rescue when they are trapped.

4. The manufacturing process is simple, and the installation and disassembly are convenient. The cylinder body and parts of the support mechanism of the utility model adopt the national standard 45 steel seamless steel pipe, which has the advantage of good welding mechanical properties, and the cylinder body and the bottom of the cylinder and each The separated parts are connected by welding, which simplifies the manufacturing process; the cylinder head and the cylinder body are connected by bolts, which makes disassembly and assembly more convenient and reduces the manufacturing cost of the equipment.

Description of drawings

Fig. 1 is a structural sectional view of the dilator device of the present invention.

In the figure, 1—air pump, 2—battery, 3—cylinder body, 4—air bag, 5—support block, 6—piston, 7—bearing cap, 8—cavity, 9—piston rod, 91—upper positioning ring, 92—lower positioning ring, 10—thrust bearing, 11—rotating shaft, 12—locating block, 13—block, 14—synchronous pulley, 15—motor, 16—running wheel, 17—screw rod, 18—spherical hinge, 19 —ball bearing, 20—washer, 21—wheel cover, 22—air valve, 23—air pipe.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

As shown in Figure 1, a kind of expander device, comprises the supporting mechanism that is used for expanding and deforming car body and is used for providing the power mechanism of expansion power to described supporting mechanism, and described power mechanism is made up of air pump 1 and is used for air supply pump 1 is composed of a battery 2 for power supply. When installing, the power mechanism is placed in the middle of the front seat of the car or under the rear seat; An air bag 4 is arranged between the bottom surfaces of the cylinder block 3, and the air pump 1 in the power mechanism inflates the air bag 4 through the air delivery pipe 23, and an air valve 22 is also arranged on the air delivery pipe 23 between the air pump 1 and the air bag 4; The mechanism includes a support block 5 for supporting the deformed vehicle body, and the support block 5 is telescopically arranged on the upper end of the support mechanism. When connecting the air delivery pipe 23 between the air pump 1 and the air bag 4, a vent hole is set on the cylinder body 3 outside the support mechanism, and the air delivery pipe 23 passes through this vent hole to be connected with the air bag, and the vent hole can be provided At the bottom of the cylinder body 3, it can also be arranged on the side wall of the cylinder body 3.

Referring to Fig. 1, the supporting mechanism of the present utility model also includes a piston 6, which is slidably arranged in the cylinder body 3; an upwardly protruding bearing cover 7 is fixed on the upper end of the piston 6, and the bearing cover 7 and the piston 6 A cavity 8 is formed between them, and an upper positioning ring 91 and a lower positioning ring 92 are arranged in the cavity 8, and a thrust bearing 10 is fixed between the upper positioning ring 91 and the lower positioning ring 92, and the upper positioning ring 91 and the lower positioning ring 92 are fixed. The positioning ring 91 is pressed against the bearing cover 7, and the lower positioning ring 92 is pressed against the piston 6; the piston rod 9 passes through the upper positioning ring 91 from the top of the bearing cover 7 and then extends into the cavity 8, and the lower end of the piston rod 9 Press against the upper surface of the thrust bearing 10, a rotating shaft 11 is also fixed at the bottom of the piston rod 9, a positioning block 12 is sleeved on the rotating shaft 11, and a stopper 13 is also fixed at the lower end of the rotating shaft 11. The block 12 is stuck between the lower surface of the thrust bearing 10 and the block 13; a synchronous pulley 14 is fixed on the upper end of the piston rod 9, and a motor 15 powered by a storage battery is fixed on the cylinder body 3 and is connected to the motor. Runner 16 is installed on the rotating shaft of 15, and described runner 16 drives synchronous pulley 14 by belt and then drives piston rod 9 to rotate, and the height of runner 16 and synchronous pulley 14 is substantially equal when installing, and just can make belt like this Keep smooth, also can reduce the friction between belt and wheel; Also be provided with ball bearing 19 at the top of cylinder block 3, synchronous belt pulley 14 is rotated with cylinder block 3 through ball bearing 19 and fits, and can not only be synchronously by ball bearing The pulley plays a supporting role, and can also prevent the timing pulley from tilting to both sides when rotating, so that the timing pulley remains coaxial with the central axis of the piston rod all the time. Described piston rod 9 is the cylindrical structure of upper end opening, and screw rod 17 is inserted in the piston rod 9 and is threadedly connected with piston rod 9, and the lower end of support block 5 is also provided with spherical hinge 18, and described screw rod 17 is connected with spherical hinge 18 by spherical hinge 18. The support block 5 is movably connected. A pulley cover 21 is also fixed on the top of the cylinder body 3, and the synchronous pulley 14 is arranged in the pulley cover 21, and a through hole is left on the upper end and the side of the pulley cover 21, and the screw rod 17 is connected from the top of the pulley cover 21. The through hole goes out, and the belt on the motor runner 16 passes through the through hole on the side of the pulley cover 21 to be connected with the synchronous pulley 14 .

Referring to Fig. 1, since the piston rod 9 will drive the thrust bearing 10 to rotate when it rotates, and the upper positioning ring 91 and the lower positioning ring 92 at the upper and lower ends of the thrust bearing 10 are fixed, so in order to reduce the size of the upper positioning ring 91 and the friction between the lower positioning ring 92 and the thrust bearing 10 , washers 20 are respectively provided between the thrust bearing 10 and the upper positioning ring 91 and the lower positioning ring 92 . In this way, the thrust bearing 10 can be isolated from the upper and lower positioning rings by the washer 20, and the washer 20 can be made of soft plastic or rubber, so that the inside of the thrust bearing 10 will not be stuck when rotating. In the present invention, both the upper positioning ring 91 and the lower positioning ring 92 are bearings.

Referring to Fig. 1, in the supporting mechanism of the present utility model, the purpose of setting the rotating shaft 11 at the lower end of the piston rod 9 is to make the piston rod 9 rotate around the rotating shaft 11 and prevent the piston rod 9 from shifting when rotating, so the rotating shaft 11 Set on the central axis of the piston rod 9; at the same time, the positioning block 12 sleeved on the rotating shaft 11 can not only limit the upward position, but also limit the position in the left and right directions. When installing, the position of the positioning block 12 The left and right ends are pressed against the inner wall sides of the lower positioning ring 92 respectively, so that the position of the rotating shaft 11 can be limited so that it remains vertical and coaxial with the central axis of the piston rod 9 .

Referring to Fig. 1, the cylinder body 3 of the utility model can be set as a split structure, that is, it is composed of a cylinder head at the top and a cup-shaped body at the lower end, and the cylinder head and the cup-shaped body are connected by bolts, which is more convenient for disassembly. In order to make the manufacturing simple and feasible and control the cost, the material of the cylinder body adopts the national standard 45 steel seamless steel pipe, and the bottom of the cylinder body and all separated parts are connected by welding. Since 45 steel is low carbon steel, it has welding mechanics The advantage of good performance is simpler and labor-saving in production.

Because the support mechanism has the support of the cylinder body, the airbag in the utility model mainly plays a sealing role, so that the manufacturing requirements of the airbag can be reduced. Here, the airbag of the utility model adopts a lining made of rubber material and nylon The double-layer structure of the jacket made of cloth, with talcum powder between the inner lining of the airbag and the jacket, can prevent the airbag from being broken when it is bonded together, and the thickness of the airbag is less than 25mm after compression, thus The production cost can be reduced.

The utility model solves the power source problem after a car accident by adopting a self-contained air pump, and solves the problem of traditional expansion tools (hydraulic jacks, pneumatic jacks, airbag jacks, etc.) due to weight, Due to the limitations of the working stroke, its own size and the working system, it cannot be used for self-rescue, and it is easier to manufacture, which overcomes the defect of high manufacturing requirements of the traditional expansion mechanism.

It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than limit the technical solution. Although the applicant has described the utility model in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that those who are not familiar with the utility model The modification or equivalent replacement of the technical solution of the utility model cannot deviate from the purpose and scope of the technical solution, and shall be covered by the claims of the utility model.

Claims (9)

1. dilator device, it is characterized in that, comprise that supporting mechanism that is used for the dilatating and deformable car body and the actuating unit that is used for providing expansion power to described supporting mechanism, described actuating unit are by air pump (1) and are used for constituting to the storage battery (2) of air pump (1) power supply; Described supporting mechanism lower end slidably is arranged in the cylinder body (3), is provided with air bag (4) between the bottom surface of the bottom surface of supporting mechanism and cylinder body (3), and the air pump (1) in the actuating unit is given air bag (4) inflation by gas piping (23); Described supporting mechanism comprises the back-up block (5) that is used for the supporting deformation car body, the telescopic upper end that is arranged at supporting mechanism of described back-up block (5).

2. dilator device according to claim 1 is characterized in that, described supporting mechanism also comprises piston (6), and described piston (6) slidably is arranged in the cylinder body (3); Be fixed with a bearing cap shim that raises up (7) in the upper end of piston (6), between bearing cap shim (7) and piston (6), form cavity (8), in described cavity (8), be provided with one and go up a steady ring (91) and a following steady ring (92), between last steady ring (91) and following steady ring (92), be fixed with a thrust baring (10), the described steady ring (91) of going up pushes against with bearing cap shim (7), and described steady ring (92) down pushes against with piston (6); Piston rod (9) stretches in the cavity (8) after passing steady ring (91) from the top of bearing cap shim (7), the upper surface of the lower end of piston rod (9) and thrust baring (10) pushes against, also be fixed with a rotating shaft (11) in the bottom of piston rod (9), in rotating shaft (11), be with a locating piece (12), also be fixed with a block (13) in the lower end of rotating shaft (11), described locating piece (12) is stuck between the lower surface and block (13) of thrust baring (10); The upper end of described piston rod (9) is fixed with a synchronous pulley (14), being fixed with one on cylinder body (3) is provided the motor (15) of power and runner (16) is installed in the rotating shaft of motor (15) by storage battery, described runner (16) drives synchronous pulley (14) and then drive piston rod (9) rotation by belt; Described piston rod (9) is the cylindrical structure of upper end open, and screw rod (17) inserts in the piston rod (9) and with piston rod (9) and is threaded, and the upper end of screw rod (17) links to each other with back-up block (5).

3. dilator device according to claim 1 is characterized in that, the double-decker that the overcoat that liner that described air bag (4) is made by elastomeric material and nylon cloth are made is formed also is provided with french talc between the liner of air bag (4) and overcoat.

4. according to claim 1 or 3 described dilator device, it is characterized in that, on the gas piping (23) between air pump (1) and the air bag (4), also be provided with air valve (22).

5. dilator device according to claim 2 is characterized in that, is provided with spherical hinge (18) in the lower end of back-up block (5), and described back-up block (5) flexibly connects by spherical hinge (18) and screw rod (17).

6. dilator device according to claim 2 is characterized in that, is provided with ball-bearing casing (19) on the top of cylinder body (3), and described synchronous pulley (14) is by ball-bearing casing (19) and cylinder body (3) normal-running fit.

7. dilator device according to claim 2 is characterized in that, thrust baring (10) and last steady ring (91) and and following steady ring (92) between be respectively equipped with packing ring (20).

8. dilator device according to claim 2 is characterized in that, described rotating shaft (11) is positioned on the central axis of piston rod (9).

9. dilator device according to claim 6 is characterized in that, also is fixed with a belt wheel cover (21) on the top of cylinder body (3), and described synchronous pulley (14) is arranged in the belt wheel cover (21).

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