SU1140798A1 - Device for damping impact load - Google Patents

Abstract

1. A DEVICE FOR SUBSTITUTION OF A SHOCK LOAD, containing a fixed support and a flexible tape, connected to a means, perceiving loads, characterized in that, in order to increase reliability in operation, a means, perceiving loads. It has a holder and loops of flexible lengthy material, fixed on the tape and freely strung on the holder. 2. The device according to claim 1, characterized in that the holder is made in the form of a bracket, the ends of which are rigidly fixed on a fixed support. 3. The device according to paragraphs. 1 and 2, that is, that K) is so that one end of the tape is rigidly connected to the fixed support. 4. The device according to Claim 1, which is made in such a way that the holder is made in the form of an annular element freely suspended from the hinges, and one end of the tape is rigid (L is fixed on a fixed support. 5. Device ho pp. 1 and 4 characterized in that the annular element is rigidly connected to one of the ends of the tape.

Description

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00 The invention relates to a snubber; it is developed in shock absorbing devices for transport safety belts, safety devices and any other energy absorption devices. For the protection of passengers and the driver in case of accidents, seat belts and shock absorbers are widely used. Of these devices, seat belts are the most widely used, which is explained by their simple design. However, seat belts, which usually have the form of a cushion, do not adequately protect people during accidents. Such belts are slightly lengthened even when compressed; Particularly large loads and, moreover, they are instantly compressed after the load is removed, can themselves be a source of human injury. A car seat belt design is known with a cushioning unit that provides programmable belt lengthening at a given load, which is provided by a tape folded into a loop and stitched with sewing threads. The stitched loop is pressed against the tape, and the sleeve is put on it. However, under load, the sleeve first collapses, and then the sewing threads are torn. Therefore, it is necessary to use special sewing threads. The sewing stitches should be strictly perpendicular to the main thread and the direction of application of the load, since even minor distortions, which are practically difficult to avoid, reduce the possibility of simultaneous breaking of sewing threads along the entire length of the stitch, which leads to unevenness of the breaking load and, consequently, reliability of the shock absorber. At the same time, it is impossible to create breaking loads of more than 200 kgf when stitching loops from tapes WIDTH 25-30 mm. If the destruction of the sleeve occurs under heavy loads, then damage to the power part of the belt is possible, which reduces the reliability of the device. At low open loads, the sleeve will not have an energy-absorbing function. . In addition, it is impossible to conduct a sufficient non-destructive quality control of the firmware, which also reduces the reliability of the damping device. The closest if if the invention, by its technical nature, is a device for damping a shock load, comprising a fixed support and a flexible tape connected to a load sensing means, a coil on which the tape is wound, and a load sensing means is made in the form of a lining consisting of two parts glued together. . When a heavy load is applied on. The belt reel, equipped with special clamps, wedges the tape, not allowing it to unwind from the reel. When a given load is completed, the bracket with the coil is separated from the fixed mount — and the shock absorber tape begins to be loaded, as a result of which the plates are loaded and separated at a given load. The main energy absorbing parts of this design are the bracket and the cover plate. AT . The invention provides the possibility of using a cushioning tape of the loops sewn with sewing pads 2. The disadvantages of the known device are the difficulty of maintaining the tearing load of the glued lining during long-term operation and exposure to light weather, as well as the impossibility of carrying out reliably. non-destructive quality control of gluing both at the gluing stage and during operation. The aim of the invention is to improve the reliability of the device for absorbing shock loads. When the specified load is reached, the tape folded in the device with the help of a tearing means begins, in steps, to expand to a predetermined value, after which the tape elongation is strictly limited. After the load is removed, the device does not tend to be restored to its previous length by shortening. The goal is achieved by the fact that in a shock absorbing device supporting the fixed support and a flexible tape connected to the means receiving the loads, the latter has a holder and loops of flexible long-length material fixed loosely strung onto the holder. In this case, the holder can be made in the form of a bracket, the ends of which are rigidly mounted on a fixed support. Moreover, one end of the tape can be rigidly connected with a fixed support. Besides. The holder can be made in the form of an annular element, freely suspended from the hinges, and one end of the tape is rigidly connected, with a fixed support. The ring-shaped element can be rigidly connected to one of the ends of the tape. FIG. 1a, S shows the corresponding appearance and filling pattern of the woven tape, which is convenient for receiving the device; in fig. 2-22 are embodiments of the device in FIG. 23 and 24 are typical device schedules; in fig. 25-27 - energy-efficient devices with different types of holders. In the device (Fig. 2a), the tape 1 is loosely strung with loops 2 on a holder 3, made in the form of a clamp. One end of the tape and the bracket are fixed on a fixed support 4. A load P is applied to the loose end of the tape (Fig. 25). In the device of FIG. For tape 1, the arch-shaped one is stitched with loops 2. A ring-like element 3 is attached to the ring, one end of which is fixed to the fixed support 4. Load is attached to the loose end of the tape (Figure 35) In the device of figure 4, tape 1 is loosely strung by loops 2 ring-shaped: element 3, with one end of the tape fixed on the fixed support 4. The holder 3 is applied to the load P (Fig.45). In the device in Fig. 5a, the tape 1 is freely strung on loops 2 on a ring shaped like, item 3. One end of the yarn is fixed on a fixed support 4 and the holder 3 is fixed on the end of the tapes. A load P is attached to the loose end of the tape (FIG. 55). In the device in Fig. 6a, the tape 1 is loosely strung with loops 2 on a knot-shaped element 3, one end of the tape is fixed on the fixed supports 4, and the ring-shaped element 3 is the beginning of the tape. A load P is applied to the loose end of the tape (Fig. B). The device in Fig. 7o (the tape 1 is loosely strung with loops 2 on the holder 3, made in the form of a bracket. The ends of the bracket are fixed on a fixed base. A load P is applied to the loose end of the tape Fig. 7 (). Tables 1 and 2 give a systematization of the construction of diagrams of energy-absorbing devices based on the basic versions of devices (Fig.2-7) with varying arrangement of loops in the tape, number of rows of loops in the tape, number of tapes in the device the number of points fixed fixed tape and holder. Part A of the scheme of Table 1 shows the principle of operation of energy-absorbing devices (figure 2-6): B | corresponds to figure 2, B - fig.Z; B - figure 4; B - figure 5; Bj - Fig. 6. Macfb C shows the possibility of obtaining variations of devices from the basic variants of Part B by varying the arrangement of loops on the tape. Part D shows the possibility of obtaining variations of devices by varying the number of rows of loops in the tape, the number of holders in the device, the number of tapes in the device. Part E shows the possibility of obtaining variants of devices with a symmetric and asymmetrical arrangement of the loops of one row or its part relative to the loops of another row or its part. In part A of the scheme table. 2 shows the principle of operation of the device. Part B contains the basic device of FIG. 7. Part C shows the possibility of obtaining varieties of devices from the basic version of Part B by varying the position of the loops on the tape. Part D shows the possibility of obtaining options for devices by varying the number of loop loops on the tape, holders, tapes, and fixed points for fixing the tape in the device. Part E shows the possibility of obtaining variants of devices with a symmetric and asymmetrical arrangement of the loops (in one row or its part relative to the loops of another row or its part. FIG. 8-22 shows the variants of devices obtained by

at

schemes table. 1 and 2 based on the basebps variants of FIG. 2-7. In this case, the tape 1, the loops 2, the holder 3, the fixed support 4, the load P, exceed the predetermined strength of the loops 2 are indicated.

The fabrication of the woven tape 1 for an energy absorbing device can be divided into the following steps.

The first stage is the manufacture of the fixing portion (Fig. 1). This part of the ribbon is made in the usual way of weaving. In this case, all the threads of the framework are involved. FIG. 1-1 the program of work of the main yarn of the fixing section is carried out with shims IV-XIII, and the program of work of the main yarn of the looped area - shafts XIV-XV

The second stage is the fabrication of a section of M (Fig. 1), which serves to form a loop. At the same time weaving produces: at. the disconnected commodity mechanism, removal of the secondary section of the secondary section from the fabric-forming zone, additional deceleration of the main yarn of the looped section, excluding their release, as well as removal of a predetermined part of the load of the basic yarn tension of the looped section in order to obtain the required density for the duck of the looped section .

The program for shutting down the output mechanism is carried out by hedging III as it rises.

The program for braking the main threads of the hinge section is carried out by hedging II as it rises.

The program for removing a part of the load of tension of the main threads of the hinge section is carried out by hemming I as it rises.

The third stage is the formation of a loop from the woven area developed in the second stage, which coincides with the beginning of the next fixing area. The manufacture of this section is carried out with the included delivery mechanism and the insertion of a fixing section into the pa6oty of the main threads. In order to facilitate the formation of a loop, a certain amount of the first weft feeds of the third Stage is carried out with the removal of a given part of the load of the thread of the main thread of the looped section with the same technique as in the second stage.

07986

Further production of this section is carried out according to the mode of the first stage.

Making woven area in

of the second stage and the formation of a loop from it in the third stage is provided only in the case when the total tension of the main threads of the fixing section exceeds the total

tensioning the main threads of the looped area. In addition, the length of the fixing section (fig.la) or the number of repetitions of rapport in the first stage (fig.1B) should provide

5 solid earnings of the main threads of the loop section and exclude transfer of them from one loop to another. The structure of the tape (Fig. 1) made by the sack interlacing with pierced yarns is the most rational in the manufacture of such tapes. However, this does not preclude the use of other weaves.

5 A device for damping a shock load operates as follows.

When a load P is applied to the loose end of the tape 1 (Fig. 2), which exceeds the specified strength of the loops 2, the loops are broken, successively inserting the next interlope sections of the tape and the loops under load. Loop destruction occurs until the length of the threaded tape 1 exceeds the length of the holder 3. After the tape is fully straightened, the loop breaks stop, the load is perceived only by the base of the tape and therefore further

0 tape elongation in the device is strictly limited and depends mainly

from the raw material composition of the unbreakable warp threads and the structure of the interlobel of the site.

If the load P is applied to the loose end of the tape 1 (FIG. 3b), then the destruction of the loops 2 occurs until the length of the strung part of the tape 1 exceeds the length of the holder 3. If, after fully straightening the tape, the load P is applied to the holder 3 (FIG. 46) then after the last loop 2 breaks, the tape 1 separates from the holder 3.

If the load P is applied to the loose end of the tape 1 (FIG. 5B), then the destruction of the loops occurs before. As long as the length of the strung part of the tape 1 exceeds the length of the holder 3. After the tape has been completely straightened, the basis of the tape perceives the load. If the load P is applied to the loose end of the tape 1 and the holder 3 (fig.bb), then the loops 2 are destroyed until the length: the strung part of the tape 1 exceeds the length of the holder 3. After the tape is fully straightened, the load is perceived by the tape base. If the load P is applied to either end of the tape 1 (FIG. 7B), then after the last loop 2 breaks, the tape 1 separates from the holder 3. Thus, using the basic options of energy-absorbing devices, you can get a large number of new options with the help of the schemes given in tab. 1 and 2. Use the chart table. 1 is needed as follows. Consistently composing the base variants of part B, taking into account the location of the loops in the loop, the number of rows of loops in the tapes, the number of holders and tapes in the device, the number of fixed points of the tape and the holder specified in parts C, D and D : then, G, D B.V.GzD, BlV.G.D, B, C, GzD, B.VgGzD, B ,,, D,., ..D, BgV., t, Bg.GzD, BgVgG D. FIG. 8 shows a combination device, which may have a tape 1 s and bolts of loops 2 arranged symmetrically to each other (Fig. 8a) and a certain shift relative to each other (Fig. 8B), and rows of loops 2 can be strung as on one end of the holder 3 (FIG. 8B) and each row to its end of the bracket (FIG. 8e (, c). When a load P is applied in the circuit, it simultaneously loads and collapses along one loop from each row. Herewith their breaking loads are folded. When the circuit 5 is operated, the loops in rows are loaded and destroyed alternately. The device is loaded and destroyed alternately. Fig. 10 shows the device by combination. When the device operates according to the ot scheme, the loops 2 in both belts 1 are destroyed independently of each other as they are loaded. According to the scheme S, the tapes 1 are connected at the point of application of the load P. The fastening of the tape 1 and the point of application of the load P provide a symmetrical arrangement of the loops 2 of both tapes. Therefore, during operation, the devices simultaneously load and break one loop of each tape. However, their breaking loads add up. In the device according to the scheme in fixing the tape 1 and the point of application of the load P, the loops 2 are located in rows 1 of a given shift. Therefore, when the device is operated first, the loop of the upper ribbon is destroyed first, then the lower one and so on in turn. FIG. 11 shows a combination device. The operation of this device is similar to the operation of the device by a combination, but one tape is used. FIG. 12 shows a combination device. By varying the length of the destructive elements 3, it is possible to obtain, by operating the device, a successive breaking of loops 2 in rows and a simultaneous breaking of two loops 2 — along each row from each row when their breaking loads are added. FIG. 13 shows a combination device. In the device, tapes 1 are connected at the point of load P. As in the examples, varying the length of the tearing elements 3, fastening the tapes 1 and the point of application of the load P, can be achieved as a simultaneous breaking of one loop 2 of each tape 1 by adding the breaking loads and sequential break loops 2 in tapes 1.. FIG. 14 shows the device by combination B, C, D, D. In the device, the tapes 1 are connected at the point of load R.

tapes 1 and the DOT of the load p can be achieved both by the simultaneous breaking of two or even four loops 2 when adding their breaking loads, and the successive breaking of the loops 2 in the tapes 1. In FIG. 15 shows the device according to the combination B in FIG. 16 is a combination device (two tapes 1 are connected at the point where the load P is applied); in fig. 17, the device according to the combination GD, in FIG. 18 — device according to the combination (two tapes 1 are connected at the point where the load P is applied); .on FIG. 19 —the device according to the combination in FIG. 20 —the device according to the combination B. (two tapes 1 are connected at the point of application of the load P) i in FIG. 21 is a device according to a combination B., D (two tapes 1 are connected at the point where the load P is applied) i in FIG. 22 a combination device (two tapes 1 are connected at the point of application of the load P).

Scheme table. 2 should be used in the same way as the table. Combinations of basic versions of Part B are consistently compiled, taking into account Parts C, D and D:

B, C, D, D, B. BV, D, GD, then B.,

, G, D, B..D

After making the combinations, you can start building diagrams of energy absorbing devices.

If the power consumption of the device exceeds the value of the

the kinetic energy on it, the device operation diagram has the form shown in FIG. 23.

If the power consumption of the device is less than the magnitude of the kinetic energy acting on it, the diagram of the operation of the device has the form shown in FIG. 24

These types of holders (Fig. 2-22) do not limit the use of their other form and device. The holders 3 (FIGS. 25 and 26) can have a wide variety of shapes and can be made from a wide variety of materials. The holder can be rigid, elastic or elastic. To increase the power consumption of the device, the holder may consist of two parts (Fig. 27): rigid E and elastic.

The wide range of programming of the energy capacity of the device in the manufacture of it from conventional textile yarns saves costly sewing threads.

At the same time, simplicity and reliability of non-destructive quality control of both manufactured tape and energy-absorbing device are characteristic

The tape type LKR-65, which works to tear apart at a load of 65 kgf, has an elongation of 100%. In order to obtain an effort when tearing 200-250 kgf, the tape LKR-65 is stitched in four folds. At the same time, the weight of 1 m of such a compaction is 148 g. Using the invention allows to obtain a device with a breaking load of tape loops when they are destroyed in the device 200-250 kgf, elongation 100% and the weight of the tape in the device 65-75 g, which is 1.9 times lighter composition tape LCR-65.

one

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Table 1

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P successive destruction of the loops by the holder and loading of the inter-loop sections of the tape. the holder has a fixed mount, the tape has a fixed mount, the load is applied to the tape. the holder does not have a fixed mount, the tape has a fixed mount, the load is applied to the tape. the holder does not hang a fixed mount, the tape has a fixed mount, the load is applied to the holder. the holder has a fixed mount on the tape, the tape has a fixed mount, the load is applied to the tape. the holder has a fixed fastening on the tape, the tape has a fixed fastening, the load is applied to the tape and the holder, the loops are located on one side of the tape. loops are located on both sides of the tape, there are two or more rows of loops in the tape, one holder and one tape in the device, one tape fixed point in the tape, one row of loops in the device, two or more holders and one tapes have one fixed point, there is one row of loops in the tape, there is one holder and two or more tapes in the device, and the tape has one fixed point. there is one row of loops in the tape, one holder and one tape in the device, the tape has two or more fixed points, two or more loops in the tape, two or more holders and one tape in the device, the tape has one fixed point.

- the tape has one row of loops in the device

two or more holders and two or more tapes, the tape has one fixed point.

- there is one row of loops in the tape, in the device one holder and two or more tapes, the tape has two or more fixed points.

- there are two or more rows of loops in the tape, one holder and one tape in the device, the tape has two or more fixed points.

- there are two or more rows of loops in the tape, in the device one holder and two or more tapes, the tape has one fixed point.

- there is one row of loops in the tape, two or more holders and one tape in the device, the tape has two or more fixed points.

- there are two or more rows of loops in the tape, in the device two or more holders and two or more Tapes, tapes have one fixed point.

- there are two or more rows of loops in the tape, two or more holders and one tape in the device, the tape has two or more fixed points.

- in the tape two or more rows of loops, in the device one holder and two or more tapes,

The tape 1 has two or more fixed points.

- there is one row of loops in the ribbon, there are two or two in the device

more holders and two or more tapes, tape

has two or more fixed points.

- there are two or more rows of loops in the tape, two or more holders and two or more tapes in the device, a tape. It has two or more fixed points.

- symmetric and asi1 1metrical arrangement of the loops of one row (or its part) relative to the loop of the other rows (or another part of it).

iB P

successive destruction of the loops by the holder and loading of the inter-loop sections of the tape. the holder has a fixed mount, the tape does not have a fixed mount, the load is applied to the tape. loops are located with one CTOpofju tape, loops are located on both sides of the tape, the tape has one row of loops, in the device one holder and two or more tapes, the tape has one row of loops, in the device two or more holders and one tape, the tape has two rows of loops, in the device one holder and one tape. the tape has two or more rows of loops, in the device two or more holders and one tape. the tape has one row of loops, the device has two or more holders and color or more tapes, the tape has two rows of loops, the device has one holder and two or more tapes, the tape has two rows of loops, the device has two or more holders and two or more ribbons, symmetrical or asymmetrical arrangement of the loops of one row (or its part) relative to the loops of the other rows (or another part of it).

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Claims (5)

1. DEVICE FOR EXTINGUISHING SHOCK LOADS, comprising a fixed support and a flexible tape connected to a load receiving means, characterized in that, in order to increase reliability, the load receiving means has a holder and loops of flexible long material fixed to ribbon and loosely strung on a holder. 2. The device according to claim 1, characterized in that the holder is made in the form of a bracket, the ends of which are rigidly fixed to a fixed support. 3. The device according to paragraphs. 1 and 2, characterized in that one end of the tape is rigidly connected to a fixed support. 4. The device according to claim 1, wherein the holder is made in the form of an annular element freely suspended on loops, and one end of the tape is rigidly fixed to a fixed support. 5. The device ho pp. 1 and 4, it was cast with the fact that the ring-shaped element is rigidly connected to one of the ends of the tape. (L Shiite