RU2373076C2 - Device to open and close vehicle open body - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: device to open and closed vehicle body top comprises ringed cable (3d and 3s), self-centering supports (21a and 21b), rear side pulleys (4d and 4s), and vertical driving pulleys arranged in telescopic casing (9). Driving pulleys are mounted to be driven by bevel gear wheels. One gear wheel with driving pulley and another gear wheel with driving pulley are mounted aligned one before the other, on opposite sides of central bevel gear wheel. Sections of aforesaid ringed cables (3c and 3f), passed between aforesaid pulleys (5d-5'd and 5s-5's), are located in parallel so that top side sections move in one direction.

EFFECT: simple and reliable operation.

5 cl, 8 dwg

Description

Technical field

The present invention relates to a device for opening and closing the top, designed to close open bodies of industrial, agricultural and / or similar vehicles. This device allows you to simply and easily open and close the top, for example, canvas, to close the bodies of vehicles.

State of the art

It is known that in industrial vehicles, to close the so-called open bodies, they use, among other things, a top, for example a tarpaulin, with which the transported materials are closed, protected, held in place and, therefore, prevent their loss.

During the transportation of bulk and loose materials, such as, for example, sand, gravel, etc., they can be carried out of the body by a swirling stream of air onto vehicles that follow.

This can make driving difficult and lead to damage and accidents caused by poor visibility, cracking or destruction of the windshield of the vehicle following it, as well as other negative consequences, such as pollution of the road surface. Various solutions to the problem of closing vehicle bodies are known.

Such decisions are complex and expensive, and each time they must be based on the actual dimensions of the vehicle body, which must be closed, i.e. require a lot of time and complex actions.

In addition, such solutions involve the use of complex mechanisms containing, for example, transmission gears for transmitting rotation and actuating self-centering supports supporting the tarpaulin.

To drive the entire system, such transmission gears contain bevel pairs for transmitting rotation to other shafts located in the corners of the body, and require a reduction gear to reduce force.

The systems described above are difficult to move with your hands, because they are very heavy and are characterized by significant frictional forces, even if they contain a lower gear. Therefore, such systems require the use of auxiliary drive means, such as electric motors, etc.

EP 1228912 describes a device for opening and closing the top of a vehicle comprising drive pulleys driven by twin bevel gears. Both drive pulleys are mounted on the same wheel, and therefore rotate in the same direction, so the looped cable passing from one of the two pulleys must be crossed so that the upper side sections of the cable move in the same direction. The disadvantage of this design is that the tension of the crossing and non-crossing cables are not equal, due to which the stresses are distributed unevenly; in addition, the crossing cable enters the twin side pulleys (5s and 5′s, FIG. 1) with a skew relative to the grooves of these pulleys, which can lead to its slipping.

Disclosure of invention

In this regard, the object of the present invention is to provide an easy-to-use, structurally simple and reliable device for opening and closing the top of vehicles, which allows you to symmetrically distribute the cable tension on both sides of the body and carry out its linear and reliable movement in the drive pulleys.

The system by which the task is solved is described in paragraph 1 of the claims. Other aspects of the invention are defined in additional claims.

For a better understanding of the subject matter of the present invention, its description is given with reference to the accompanying drawings. For simple and reliable tension of looped cables (3d and 3s) extending along the lateral sides of an open vehicle body, the present invention proposes a device in which drive pulleys (6a-6b) are configured to be driven by bevel gears (7a 7b and 7c), wherein the wheel 7a with the pulley 6a and the wheel 7c with the pulley 6b are mounted coaxially one before the other on opposite sides of the central bevel wheel 7b, driven manually by the handle (81) and the drive shaft (8). The sections of looped cables 3c and 3f passing between the pulleys 5d-5′d and 5s-5′s are parallel to each other, so that the upper side sections (3a) move in the same directions.

Therefore, using the proposed device, it is possible to evenly distribute the cable tension on the pulleys 6a and 6b without crossing it, which allows the cable to pass through the side pulleys 5′d and 5′s exactly along their grooves, thereby eliminating the risk of its jumping off.

Detailed Description of Drawings

Figure 1 is a perspective view of the proposed device mounted on an open body of a conventional vehicle, some of the invisible parts of which are shown in thin lines.

Figure 2 is a side view of the proposed device mounted on a usually open body of the preferred vehicle, and in the maximum extended position, the canvas top is shown in bold dotted lines, and in the maximum allotted open position, it is shown in thin dash-dotted lines.

Figure 3 is a section along the line I-I (figure 2) of an open body with a device in which the retracted position of the self-centering supports supporting the tarpaulin is shown by thin dashed lines.

Figure 4 is a section along the line II-II (figure 3), which shows only the position of the main components, movement groups and systems of the coupled axles, which are located in a tubular telescopic housing installed in the upper front part of the front side of the open body.

FIG. 5 is an image of the same tubular telescopic body as in FIG. 4, including cables used to move the top of an open body.

Fig.6 is an enlarged section III-III (Fig.5) of a movement group located in a tubular telescopic housing.

Fig.7 is an enlarged detailed image of the grooves of the pulleys included in the movement group shown in Fig.6.

Fig. 8 is a front view, partially in section, of a telescopic self-centering support used to support the top of various widths.

In the above drawings, the same elements have the same designations.

In figures 1, 2 and 3, thin lines show the body 1 of a typical industrial vehicle in which the proposed device is installed.

The body 1 has a bottom 11, side flanges 12d and 12s, a movable rear side 12 and a fixed front side 14.

The device constituting the object of the present invention is used with the body 1, it is fully illustrated in figure 1, and figure 2, 3, 4, 5, 6 and 7 using various types and sections shows its components.

For clarity and simplification of the drawing in figure 1 and 3, the canvas top 2 is not shown.

Canvas top 2 is shown only in figure 2, and in the maximum extended position covering the entire body 1, it is shown in bold dotted lines, and in the retracted position, in which the tarpaulin top 2 is assembled at side 14 and the body 1 is fully open, it is shown thin dash-dotted lines.

The canvas top 2 is supported by substantially the same self-centering supports 21a and 21b.

As can be seen from Figs. 1, 2, 3, and especially from Fig. 8, these self-centering supports contain tubular telescopically adjustable elements, described in more detail below.

As can be seen from Fig. 8, the supports 21a and 21b have the same structure and are essentially formed by a section 23, which is formed from a suitable metal tube. The metal tube is respectively curved and thereby forms a support 21a-21b, which forms an upwardly convex wall to support the canvas top 2.

Corresponding tubes 24 are inserted into the ends of the pipe forming the section 23, which have an outer diameter equal to the inner diameter of the section 23, and which, in addition, are bent like a section 23, so that they can move freely inside the section 23. The outer ends of the tubes 24 welded to the corresponding identical nozzles 22a and 22b extending perpendicular to the tubes 24.

Due to this, it is possible to adjust the length of the supports 21a, 21b for various sizes of the body 1, on which the proposed device is installed. The final length can be fixed with the corresponding V screws, rivets, etc.

Although the supports 21a and 21b are the same, they are used for different purposes, and therefore, they have different purposes.

In particular, the support 21a with its tubes 22a is rigidly fixed to the upper section of the cable 3a, and the supports 21b with their tubes 22b can move along it.

The pipes of the rear support 21a are fixed to the cable 3a by known methods and known means, and the pipes 22b of the movable supports 21b can freely move along the indicated upper section of the cable 3a, which extends inside them.

It should be noted that the tubes 22a, 22b and the corresponding section of the cable 3a are symmetrically located on both sides of the body, in particular, in the upper part of the sides 12d and 12s.

As shown in the aforementioned drawings, the cable section 3a is a part of the cable forming a closed loop. In particular, in the described embodiment of the invention, there are two different cables that form closed loops that differ from each other only in length and, therefore, their location in the front drive part.

Since the two looped cables obtained in this way are used on two different sides, they are indicated by 3d and 3s.

Both cables 3d and 3s move in the grooves of the corresponding rear vertical pulleys 4d and 4s, which are installed at the ends of the upper edges of the respective side flanges 12d and 12s.

The 3d and 3s cables move in the grooves of the paired front horizontal pulleys 5d-5′d and 5s-5′s, slightly protruding from the lateral ends of the telescopic housing 9, which is formed by suitable tubes of circular or rectangular cross section inserted one into the other with the possibility of movement.

Next, the ropes 3d and 3s are rolled in the corresponding groove of the paired vertical drive pulleys 6a, 6b, which are placed in the same housing 9.

The housing 9, such as that shown in figures 1 and 2, is fixed with or without removability by known methods and means on the upper outer part of the body 1, in particular on the upper outer part of the bead 14 of the body 1.

Pulleys 6a and 6b are rigidly connected respectively to wheels 7a and 7c, mounted coaxially one in front of the other on opposite sides of the wheel 7b with which they interact. The wheel 7b is connected to the shaft 8, on the opposite free end of which there is a handle 81.

The twin pulleys 6a and 6b and the corresponding wheels 7a-7c are separately shown on an enlarged scale in FIG. 6.

In addition, the shape of the grooves 61a and 61b in the pulleys 6a and 6b is visible from FIG. 7 on an enlarged scale.

In the described preferred embodiment, the ratio of the speed of the wheel 7a to the speed of the wheel 7b is 3/1, since such a ratio is most suitable for such a device.

Obviously, to drive the pulleys 6a, 6b, instead of hand-held devices, suitable power devices, such as a gear motor and / or similar means, can be used.

The upper right sections 3a, the right lower sections 3b, the right upper sections 3c and the lower right sections 3f form the right cable 3d and move parallel to each other in the grooves of the corresponding pulleys 4d, 5d, 5′d and 6a.

The corresponding sections of the left side, namely the upper left section 3a and the lower left section 3b, are also parallel to one another, as are the corresponding left sections 3c and 3f.

7 shows that the grooves 61a and 61b of the pulleys 6a and 6b not only have a width equal to the diameter of the cables interacting with them and completely avoid slipping of both cables 3d and 3s in the grooves 61a and 61b, but also have a wedge-shaped shape with sides converging inward and having an appropriate roughness, which allows to increase friction and avoid the cable slippage indicated above.

After describing all the components designed to move the canvas top, it should be noted that the group of pulleys 5s, 5′s, 5d and 5′d, as well as the group of pulleys 6a and 6b, made integral with the wheels 7a-7c, are placed in a box-shaped telescopic case 9, which can be lengthened and / or shortened depending on the parameters of the body on which it is necessary to install the described device.

Both cables 3d, 3s are respectively tensioned by known means and devices to ensure their frictional grip by the respective pulleys 6a and 6b and to completely prevent slippage in the grooves 61a and 61b.

For example, in the described embodiment, the tension of the 3d and 3s cables is ensured by installing the rear pulleys 4d and 4s on the respective tensioners 41d and 41s, which are pulled back, thereby gradually tensioning the corresponding 3d, 3s cables. After disclosing the design of the proposed device, its operation is described.

By means of the handle 81 and the corresponding shaft 8, it is possible to rotate the wheels 7a-7c, which, in turn, rotate the pulleys 6a and 6b in opposite directions.

The movement of both cables 3d and 3s begins when the folded canvas top is located on the side 14 by rotating the pulleys 6a, 6b in the first direction.

In this case, the upper part of the section 3a, both on the right and on the left side, causes the support 21a to move, which is attached to the section 3a on both the right and left sides by the corresponding tubes 22a. Thus, the support 21a moves from the side 14 to the side 13.

The translational movement of the support 21a leads to the fact that, with the gradual deployment of the canvas top, the support 21a entrains the supports 21b.

This continues until the body 1 is completely closed.

Obviously, when the handle 81, the shaft 8 and the drive group are rotated from the wheels 7a-7c and the pulleys 6a, 6b in the opposite direction to the previous one, the supports 21a and 21b will move in the opposite direction and will occupy the position in which the canvas top is folded at the front body 1, as shown by thin dashed lines in figures 1, 2 and 3.

A feature of the proposed device is the ability to exclude the intersection of sections 3c and 3f, which are located between the pulley 6b and pulleys 5s, 5′s, which allows you to set in motion both the upper section 3a and the lower section 3b of the cable 3s in the same direction as the corresponding , the upper section 3a and the lower section 3b of the 3d cable without the risk of the cable slipping off the pulleys 5′d and 5′s.

From the description it is clear that the proposed device consists of very simple components that are commercially available, it is easy to work with, it is easy to install, and also to fit any type of bodywork of industrial, agricultural and / or similar vehicles.

In addition, to reduce installation costs, all components are made in the form of parts of the so-called do-it-yourself kit. Therefore, such parts of the DIY kit are easy to assemble by unskilled personnel without a special tool that is available only in specialized mechanical workshops.

Obviously, the design of the proposed device can be modified without going beyond the scope of the invention, which is limited by the claims with reference to the accompanying drawings, and therefore without going beyond the scope of legal protection of the present industrial invention.

Claims (5)

1. A device for opening and closing the top, for example tarpaulin, intended for closing open bodies of industrial, agricultural and / or similar vehicles, containing the corresponding looped cables (3d and 3s) installed with the possibility of movement along the side boards (12d and 12s) of the open the body (1) of a vehicle, such as a truck, and self-centering supports (21 a and 21 b) supporting the canvas top fixed on them (2) and placed on the upper right and left sections (3a) of the looped t wasps (3d, 3s), and the self-centering support (21a), facing the rear of the open body (1), is mounted on the corresponding upper sections (3a) of these looped cables (3d and 3s), respectively, on the right and left side by means of nozzles (22a) ) located at its ends, subsequent self-centering supports (21b) are mounted to move on these sections (3a), and looped cables (3d and 3s) are stretched between the rear side pulleys (4d and 4s), which are installed on the rear ends of the upper edges corresponding side sides (12d and 12s) of the body, and vertical drive pulleys (6a and 6b), which are placed in the telescopic case (9) passing through the twin pulleys (5d-5'd and 5s-5's), which protrude somewhat from the lateral ends of this case (9 ) and the corresponding grooves of which are at the same height with the grooves of the rear side pulleys (4d and 4s) and aligned with them, characterized in that said drive pulleys (6a-6b) are mounted with the possibility of driving by bevel gears (7a, 7b and 7c), wherein one gear wheel 7a with a drive pulley 6a and the other gear a wheel 7c with a drive pulley 6b is mounted coaxially one before the other on opposite sides of the central bevel gear 7b, which is made to be manually actuated by a handle (81) mounted on the drive shaft (8), and sections of looped cables (3c and 3f ) extending between said pulleys (5d-5'd and 5s-5's) are arranged parallel to each other so that the upper side sections (3a) move in the same directions. 2. The device according to claim 1, characterized in that the said rear vertical pulleys (4d and 4s) are mounted on the respective tensioners (41d and 41s) to push these pulleys (4d and 4s) back and out from the vertical drive pulleys (6a and 6b ), due to which the necessary tension of the corresponding cables (3d and 3s) is ensured, and sections of these cables (3d and 3s) interacting with the grooves (61a and 61b) of the corresponding vertical drive pulleys (6a and 6b) are completely prevented. 3. The device according to claim 1 or 2, characterized in that the self-centering supports (21a and 21b) are made telescopic, which allows them to be customized for open bodies (1) of various widths. 4. The device according to claim 1, characterized in that said telescopic body (9) is formed by tubes of circular or rectangular cross-section inserted one into the other with the possibility of movement, and can be fixed with or without removal on the upper outer part of the front sides (14) of an open body (1). 5. The device according to one of claims 1 to 2 or 4, characterized in that it is made with the possibility of driving the entire group of pulleys, cables and other moving parts of the device both manually and using auxiliary devices, such as a gear motor .

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