CN201712564U - Supporting body for expander - Google Patents

Abstract

A support body for a dilator, comprising a support block, a spherical hinge is arranged at the lower end of the support block, and the support block is movably connected with a screw rod in the expander through the spherical hinge. The utility model can flexibly adjust the angle of the support block by setting a spherical hinge, so that the front of the support block is automatically aligned with the vehicle body part to be expanded, so that the deformed part of the vehicle body can be stressed more in place, and the expander is avoided. Sliding occurs during use, preventing secondary damage to the human body due to slipping. In addition, the support body of the utility model is very convenient to install and replace, the manufacturing process is simple, and the cost is also very low.

Description

A support for dilators

technical field

The utility model relates to an expander for helping people in the vehicle to save themselves after a car accident occurs, in particular to a support body used in the expander.

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 purpose of this utility model is to solve the problem that the support body at the upper end is difficult to align with the deformed car body when the currently used expander is positioned, and to provide a flexible adjustable support block angle support.

The technical scheme of the utility model: a support body for a dilator, which is characterized in that it includes a support block, and a spherical hinge is arranged at the lower end of the support block, and the support block connects with the screw rod in the expander through the spherical hinge. active connection.

The support body of the utility model is especially suitable for dilators with the following structures:

A self-rescue expander for a vehicle, 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 an air pump and a 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 support mechanism includes The supporting block supporting the deformed vehicle body is telescopically arranged on the upper end of the supporting 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.

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

By setting the spherical hinge, the angle of the support block can be flexibly adjusted, so that the front of the support block is automatically aligned with the part of the vehicle body to be expanded, so that the deformed part of the vehicle body can be stressed more in place, and the expander is avoided when the expander is in use. Sliding occurs, preventing secondary damage to the human body due to slipping. In addition, the support body of the utility model is very convenient to install and replace, has simple manufacturing process and low cost.

Description of drawings

Fig. 1 is a structural cross-sectional view of a dilator adopting the support body 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

The utility model will be further described below in conjunction with the accompanying drawings and a dilator adopting the support body of the utility model.

As shown in Figure 1, a vehicle self-rescue expander includes a support mechanism for expanding the deformed vehicle body and a power mechanism for providing expansion power to the support mechanism, and the power mechanism is composed of an air pump 1 and a power mechanism for The storage battery 2 for supplying power to the air pump 1 is formed. When installing, the power mechanism is placed in the middle of the front seat or under the rear seat of the automobile; the lower end of the support mechanism is slidably arranged in the cylinder body 3, and the An air bag 4 is arranged between the bottom surface and the bottom surface 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 provided on the air delivery pipe 23 between the air pump 1 and the air bag 4; The support 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 expander 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 is fixed on the cylinder body 3 and installed on the rotating shaft of the motor 15 Runner 16 is arranged, and described runner 16 drives synchronous belt pulley 14 by belt and then transmission piston rod 9 rotates, and the height of runner 16 and synchronous belt pulley 14 is substantially even when installing, just can make belt keep smooth like this, can also Reduce the friction between the belt and the wheel; there is also a ball bearing 19 on the top of the cylinder 3, the synchronous pulley 14 rotates with the cylinder 3 through the ball bearing 19, and the ball bearing can not only support the synchronous pulley The function can also prevent the synchronous pulley from tilting to both sides when rotating, so that the synchronous pulley is always kept coaxial with the central axis of the piston rod. 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, in this expander, because 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 it is necessary to reduce the pressure. The friction between the upper positioning ring 91 and the lower positioning ring 92 and the thrust bearing 10 is small, and the washer 20 is respectively arranged 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 this dilator, both the upper positioning ring 91 and the lower positioning ring 92 are bearings.

Referring to Fig. 1, in the support mechanism of the dilator, the purpose of setting the rotating shaft 11 at the lower end of the piston rod 9 is to enable the piston rod 9 to rotate around the rotating shaft 11 to 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 expander 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.

Since the support mechanism is supported by the cylinder, the air bag in the dilator mainly plays a sealing role, so that the manufacturing requirements for the air bag can be reduced. Here, the air bag of the dilator is made of rubber material and nylon lining. 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.

How this dilator works:

When in use, first take out the supporting mechanism and place it on the deformed part of the car body or seat. Since the size of the expander supporting mechanism is less than 11 cm, it can be easily put into the gap of the deformed car body. Then 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 are respectively pressed against the deformed part of the car body, and then the air pump switch and the motor switch are turned on. When the airbag is inflated, the airbag will gradually inflate, thereby lifting the support mechanism to move upward; on the other hand, the motor drives the synchronous pulley to rotate through the runner. Since the synchronous pulley and the piston rod are fixedly connected, the piston rod also rotates synchronously. At this time, due to the threaded connection between the piston rod and the screw rod, there will be an upward and downward force between the piston rod and the screw rod; the piston rod is subjected to a downward force, but because the lower end of the piston rod is resisted by the thrust bearing, the piston The rod cannot move downward but can only rotate at the original position, while the screw rod is subjected to an upward force, so the screw rod will protrude upward and drive the upper support block 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 expander can be driven by a storage battery, or can be driven by a vehicle battery, and the switch of the motor can be arranged on the support block, so that it is convenient to start the switch in an emergency.

Claims (1)

1. A support body for a dilator, characterized in that it includes a support block (5), a spherical hinge (18) is provided at the lower end of the support block (5), and the support block (5) passes through the spherical hinge ( 18) It is flexibly connected with the screw rod (17) in the expander.

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