RU231497U1 - CONNECTION DEVICE OF THE SPAN OF THE WATER PIPELINE OF A MULTI-SUPPORT MOBILE IRRIGATION MACHINE WITH THE PIPE OF THE SUPPORT TROLLEY - Google Patents

Abstract

The utility model relates to agriculture, namely, to artificial irrigation of fields, and can be used in the design of a water supply pipeline of a mobile, primarily self-propelled, multi-support irrigation machine with circular or frontal movement as a hinged device for connecting its spans. The device for connecting the span 10 of the water supply pipeline 1 of the multi-support mobile irrigation machine with the pipe 11 on the support trolley 3 comprises a hinged unit located on adjacent pipes 11, 13, the first part of which, including a ball pin 14, is connected by means of a first bracket 15 to the pipe 13 of the extreme section 9 of the span 10 of the pipeline 1, and the second part in the form of a cup 16 with an internal spherical cavity is connected to a second bracket 17 fixed to the pipe 11 of the support trolley 3. Each bracket 15, 17 is made box-shaped and is provided with internal and external reinforcing elements 18, 19, wherein the internal reinforcing elements 18 are connected from the inside to the side walls 20 of the bracket 15 or to the side walls 21 of the bracket 17, connected, respectively, to the pipe 13 or the pipe 11 of the pipeline 1, and the external reinforcing elements 19 are connected to the outer surface of the side wall 20 or the side wall 21 and with the outer surface of the pipe 13 or the pipe 11, on which the bracket 15 or the bracket 17, respectively, is located. The spherical part 24 of the ball pin 14 is located in the spherical cavity 25 of the cup 16 of the hinge joint, wherein the ball pin 14 of the hinge joint is connected to the mounting plate 26, fixed on the side walls 20 and the internal reinforcing elements 18 of the first bracket 15, and the cup 16 of the hinge joint is made with a through hole 27 in the bottom and fixed on the side walls 21 and the internal reinforcing elements 18 of the second bracket 17. 8 s.p. f-ly, 8 fig.

Description

The utility model relates to agriculture, namely, to artificial irrigation of fields, and can be used in the design of a water supply pipeline of a mobile, primarily self-propelled, multi-support irrigation machine with circular or frontal movement as a hinged device for connecting its spans.

A self-propelled sprinkler machine generally consists of a water supply pipeline with sprinklers mounted on self-propelled support carts equipped with an electric drive for the wheels. A frontal sprinkler machine is designed to move along a cultivated field along an irrigation canal, taking water from it with a pump. A pivot sprinkler machine can move around a fixed pressure pipeline secured by means of a rotary elbow on a central fixed support, transferring water further into a water supply pipeline with sprinklers. The pipeline, preferably made of thin-walled steel pipes, consists of sections assembled into spans, each span being located between self-propelled support carts and connected to short pipes secured to these carts. The preference for using thin-walled steel pipes, usually galvanized, is explained by the stability of maintaining their shape within the required tolerances when operating under load, when the pipeline is completely filled with water, as well as when the ambient temperature changes. However, when vertically or horizontally bending a pipeline, the span sections of which are made up of thin-walled steel pipes, these pipes may break and the machine may fail. To prevent the pipes of a multi-support irrigation machine from breaking, it uses a hinged connection of spans with short pipes fixed on self-propelled support trolleys.

A hinged device for connecting spans of a multi-support irrigation machine pipeline is known, described in US Patent No. 3,777,979 for invention (published on 12/11/1973), in which the spans are hingedly connected to each other immediately next to the support trolleys in order to maximize the support of the pipe sections in their connection. For this purpose, the adjacent end portions of the pipes, respectively, which are to be hingedly connected to each other, are provided with brackets fixed, for example, by welding, to the upper side of the pipes and located at a small distance from their ends. A hook element in the form of an elongated lever having an end bent downwards is fixed to one of the brackets, wherein the lever extends horizontally in a vertical position parallel to the first pipe in the direction towards the end of the first pipe and has dimensions allowing it to project beyond the end of the pipe by a small distance, wherein the hook portion extends downwards by a distance slightly less than the distance between the lever and the adjacent peripheral surface of the first pipe in order to end at a small distance from the surface of the pipe. A member in the form of a horizontally disposed plate having an opening for an eye is secured as by welding to the second bracket, wherein the plate extends horizontally in a parallel relationship above the surface of the second pipe by a value less than the distance between the lever and the first pipe, but greater than the distance between the end of the hook member and the level of the first pipe, so that the hook member will extend through the eye for a pivot connection when the first and second pipes are in line in their interconnected relationship. For this purpose, the opening for the eye has a size larger in cross-section than the end of the hook of the lever to allow the hook member to extend downwardly through it. The lever and the plate have dimensions allowing the hook and eye to be located in a substantially vertically aligned relationship midway between the ends of the first and second pipes when they are in their interconnected relationship, to determine a pivot point between them.

The described design of the hinge device can only be used in the design of a multi-support irrigation machine with cable mast support of spans, since such a connection will not withstand the increased loads inherent in the cable-stayed structure of spans.

From US Patent No. 4,041,975 for invention (published on August 16, 1977), a hinged connection of pipes for an irrigation system with a central turn is known.

The external hinged connecting unit according to the invention provides an external connection between the pipe segments without applying compressive or tensile forces to the connecting element connecting the ends of the pipes. The external hinged connecting unit includes two opposite longitudinally aligned mounting pipes, which are located above the segments of the first and second pipes and are attached to them, respectively. The mounting pipes are installed at a small angle relative to the first and second pipes, wherein the segments of the first and second pipes slightly extend downwards in the direction of each other and to the connecting element. Each of the mounting pipes includes a rear end, which is attached by welding to the upper section of the connecting flanges of the first and second pipes. Each of the mounting pipes has an open end directed toward the open end of the other mounting pipe. The mounting pipes are attached to the first and second pipes, respectively, by saddle brackets.

The external hinged connection assembly further includes a first shaft having an internal end that projects into the first mounting pipe, and an external end that projects from it. The external end has a threaded hole formed therein for receiving the ball pin shaft. The pin shaft has a ball mounted on its end. Bolts pass transversely through the first mounting pipe and the first shaft, rigidly fixing the shaft from any longitudinal movement inside the first mounting pipe. The external hinged connection also includes a second shaft having an end that extends into the second mounting pipe and is fixed therein with bolts. A socket cover is mounted on the external end of the second shaft, having a spherical cavity in it that corresponds to the ball of the ball pin. An opening is formed in the socket cover communicating with the spherical cavity for receiving and installing the ball pin on the second shaft. The ball and the socket cavity are located directly above the connecting element of the first and second pipes. The external pivot joint allows the coupling assembly to rotate horizontally about a vertical axis and vertically about a horizontal axis determined by the location of the ball and the socket cavity.

The design of the considered hinge joint is not reliable enough due to constant alternating loads on the shaft of the ball pin during operation of the sprinkler machine, which leads to fracture of the shaft and cessation of operation of the hinge as a whole.

A leveling device for a hinged irrigation system is known, described in US Patent No. 9,066,475 B1 for an invention (published on June 30, 2015), where the irrigation leveling device is formed so that the extension section assembly can rotate around the main section assembly to irrigate areas that would otherwise be inaccessible due to obstacles. In the implementation, the irrigation leveling device includes a ball connector, structurally configured to connect to the main section assembly, and a socket for receiving the ball connector, which is configured to at least partially rotate around the ball connector. The socket is formed to connect to the extension section assembly. The irrigation leveling device also includes a socket pulley connected to the socket around the centroid of the ball connector, and is structurally configured to at least partially rotate the socket around the ball connector. The nest pulley is configured to be connected to a coupling element that is connected to the cam shaft via the cam shaft pulley. The cam shaft may be in connection with several switches for controlling (for example, selectively powering) at least one of the main section assembly or the extension section assembly (for example, selectively powering the drive assemblies of the corresponding section assembly). The cam shaft is also configured to indicate the positional alignment of the extension section assembly. In the implementation, the coupling element may be a flexible toothed belt or chain.

In the described design, the ball joint is structurally integrated into more complex units, the ball element itself is located at the bottom of the socket, which makes it difficult to lubricate the joint, which reduces its reliability.

From U.S. Patent No. 4,434,936 for invention (published March 6, 1984), a hinged joint of pipes for an irrigation system is known, including an outer clamp and an inner clamp. The clamps are essentially arched elements extending over the pipeline and are hingedly connected at their lower ends on opposite sides of the pipeline by pins or bolts. The clamps rotate relative to each other about a generally horizontal axis, practically perpendicular to the pipeline, and the axis of rotation approximately intersects with the longitudinal axis of the pipeline. A bracket extending from the top of one of the sections of the pipeline to the top of the outer clamp rigidly connects the outer clamp to one section of the pipeline. Another bracket, extending from the top of the adjacent section of pipeline under the top of the inner clamp, is rigidly fixed at one end to the section of pipeline and has an upwardly facing socket at the other end for receiving a ball attached to the top of the inner clamp and located below it.

Directly below the ball and socket is a flexible hose section that connects the ends of adjacent sections of pipe that are in axial alignment but are held apart. This separation, in conjunction with the ball, socket, and flexible hose section, allows the joint to flex about horizontal and vertical axes.

The hinge joint in the considered design is part of the system for leveling the spans of the pipeline of a multi-support irrigation machine and requires increased precision in manufacturing and assembly, which increases the cost of manufacturing and assembly of the irrigation machine.

From the patent of the Russian Federation No. 169550 U1 for a utility model (published on March 22, 2017), a connecting structure of adjacent sections of a water supply pipeline of a multi-support irrigation machine is known, taken as a prototype.

The connecting structure consists of connecting elements made in the form of short and long cups with end walls located at adjacent ends of the pipes, to each of which cams are attached, pressed into the cup up to the reinforcing rib and having a welded joint along the outer diameter of the cup. In the socket of the cam of the long cup there is a metal insert in the form of a cup with an internal spherical cavity. On the platform of the cam of the short cup there is a through hole with a ball pin fixed in it, the spherical part of which is located in the internal spherical cavity of the insert of the long cup, forming a ball joint. In the ball pin there is a through axial hole, and in its upper part there is a nipple for pumping in lubricant. Each cup has reinforcing ribs and an internal rib for connecting with pipes of adjacent sections of the water-carrying pipeline.

A long cup with a fist is installed at the end of the water supply pipeline of each of the adjacent sections, and a short cup with a fist is installed at the beginning of the pipeline of each of the sections. Fastening occurs by welding the end walls, reinforcing and internal ribs with the water supply pipeline. When the multi-support sprinkler machine is in operation, the spherical part of the ball pin rotates freely in the metal insert. If the coaxiality of two adjacent sections is disturbed, which can occur both due to the complexity of the terrain of the processed soil and the speed of the sprinkler machine itself, the spherical part of the ball pin continues to rotate in the metal insert, made with an internal spherical cavity, preventing the adjacent sections from separating.

The reliability of the described design is insufficient due to the weakening of the strength of the short cup cam at the installation site of the ball pin, where a platform with a hole for its installation is formed. In almost the same way, the long cup cam is weakened when forming a nest in which a metal insert with an internal spherical surface is located. The fastening of the cups to the pipes is also minimized by one internal rib between the cup and the pipe, one end wall and one reinforcing rib. In addition, the metal insert forming part of the ball joint is made closed from below, while there are no means for removing waste lubricant. In the field, in the absence of any external protection of the joint, the lubricant quickly fills with dust particles and water supplied for irrigation of the treated area, resulting in increased wear of the joint, which also reduces its reliability.

Thus, the technical problem is the insufficient reliability of the connecting structure of adjacent sections of the water supply pipeline of the multi-support irrigation machine taken as a prototype.

The specified technical problem in the device for connecting the span of a water supply pipeline of a multi-support mobile irrigation machine with a pipe on a support trolley, containing a hinged unit located on adjacent pipes, the first part of which, including a ball pin, is connected to the outer pipe of the pipeline span by means of a first bracket, and the second part in the form of a cup with an internal spherical cavity is connected to the second bracket fixed to the pipe of the support trolley, wherein the spherical part of the ball pin is located in the spherical cavity of the cup of the hinged unit, and the first and second brackets are made box-shaped, equipped with reinforcing elements, is solved in that each bracket contains internal and external reinforcing elements, wherein the internal reinforcing elements are connected from the inside to the side walls of the bracket connected to the pipeline pipe, and the external reinforcing elements are connected to the outer surface of the side walls and to the outer surface of the pipe on which the bracket is located, wherein the ball pin of the hinged unit is connected to the mounting bar fixed to the side walls and reinforcing elements of the first bracket, and the cup of the hinged unit is made with through hole in the bottom and secured to the side walls and reinforcing elements of the second bracket.

The hinge joint is preferably installed on bracket projections formed at different levels, extending along the longitudinal axis of the pipe on which it is fixed, beyond its end. In this case, the projection of the first bracket with the ball pin is located, as a rule, higher than the projection of the second bracket, equipped with a cup with an internal spherical cavity.

Each side wall of each bracket is preferably provided with mounting sockets for the mounting protrusions of the reinforcing elements.

At the ends of the outer pipe of the pipeline span section and the pipe on the support trolley facing each other with their ends facing each other, a flexible insert is preferably installed, secured to the pipes with clamps.

The ball pin of the hinge assembly is usually provided with an end thread and secured with a nut in the hole of the mounting plate.

In another case, the ball pin of the hinge assembly can be placed in the hole of the mounting plate and connected to it by welding.

Also, the ball pin of the hinge assembly can be made integral with the mounting plate.

The reinforcing elements are preferably connected to the surfaces of the brackets and pipes by welding.

The technical result of the utility model is an increase in the reliability of the device for connecting the span of the water supply pipeline of a multi-support mobile irrigation machine with the pipe of the support trolley.

The given set of features in comparison with the known level of technology allows us to conclude that the claimed technical solution complies with the condition of "novelty". At the same time, the claimed technical solution is applicable in agriculture in the design of the pipeline of mobile multi-support sprinkler machines used for artificial irrigation of fields, therefore it complies with the condition of "industrial applicability".

The claimed utility model is shown in the following figures.

Fig. 1 shows a multi-support mobile irrigation machine.

Fig. 2 shows the span of a multi-support mobile irrigation machine, installed on self-propelled support trolleys, front view.

Fig. 3 shows the span of a multi-support mobile irrigation machine, installed on self-propelled support trolleys, view from above.

Fig. 4 shows a device for connecting a span of a water supply pipeline of a multi-support mobile irrigation machine with a pipe on a support trolley in axonometric view.

Fig. 5 shows a device for connecting a span of a water supply pipeline of a multi-support mobile irrigation machine with a pipe on a support trolley in longitudinal section.

Fig. 6 shows a device for connecting a span of a water supply pipeline of a multi-support mobile irrigation machine with a pipe on a support trolley in the version of welding the ball pin of the hinge joint with the mounting bar.

Fig. 7 shows a device for connecting a span of a water supply pipeline of a multi-support mobile irrigation machine with a pipe on a support trolley in a version of the execution of a ball pin of a hinged assembly integrally with a mounting bar to form a single part.

Fig. 8 shows a device for connecting a span of a water supply pipeline of a multi-support mobile irrigation machine with a pipe on a support trolley in a real implementation on an irrigation machine.

The multi-support mobile irrigation machine consists of a water supply pipeline 1 with sprinklers 2, mounted on self-propelled support carts 3, equipped with an electric drive 4 wheels 5. The frontal irrigation machine is designed to move along the cultivated field along the irrigation canal, taking water from it with a pump. The pivot irrigation machine shown in Fig. 1 has the ability to move around a fixed pressure pipeline 6, secured to a central fixed support 7, by means of a rotary elbow 8, transferring water further into a water supply pipeline 1 with sprinklers 2. The water supply pipeline 1 consists of sections 9 assembled into spans 10 (Fig. 2, 3), each span 10 is located between self-propelled support trolleys 3 and connected to short pipes 11 of the pipeline 1, secured to the trolleys 3. As a rule, the span 10 of the water supply pipeline 1 is installed on two lines of ties 12 by means of posts and diagonals 13 distributed along the span 10. Each span 10 by a pipe 13 of its outermost section 9 is mechanically connected on at least one side to a short pipe 11 secured to the support trolley 3 by a connecting device located above.

The device for connecting the span 10 of the water supply pipeline 1 of the multi-support mobile irrigation machine with the pipe 11 on the support trolley 3 comprises a hinged unit located on adjacent pipes 11, 13, the first part of which, including a ball pin 14, is connected by means of a first bracket 15 to the pipe 13 of the extreme section 9 of the span 10 of the pipeline 1, and the second part in the form of a cup 16 with an internal spherical cavity is connected to a second bracket 17 fixed to the pipe 11 of the support trolley 3. Each bracket 15, 17 is made box-shaped and is provided with internal and external reinforcing elements 18, 19, wherein the internal reinforcing elements 18 are connected from the inside to the side walls 20 of the bracket 15 or to the side walls 21 of the bracket 17, connected, respectively, to the pipe 13 or the pipe 11 of the pipeline 1, and the external reinforcing elements 19 are connected to the outer surface of the side wall 20 or the side wall 21 and with the outer surface of the pipe 13 or the pipe 11, on which the bracket 15 or the bracket 17 is located, respectively. In this case, each side wall 20, 21 of each bracket 15, 17 can be provided with mounting sockets 22 for mounting projections 23 of the reinforcing elements 18, 19, which, as a rule, are connected to the surfaces of the brackets 15, 17 and the pipes 13, 11 by welding.

The spherical portion 24 of the ball pin 14 is located in the spherical cavity 25 of the cup 16 of the hinge assembly, wherein the ball pin 14 of the hinge assembly is connected to the mounting plate 26, fixed on the side walls 20 and the internal reinforcing elements 18 of the first bracket 15, and the cup 16 of the hinge assembly is made with a through hole 27 in the bottom and fixed on the side walls 21 and the internal reinforcing elements 18 of the second bracket 17. The ball pin 14 of the hinge assembly in the preferred embodiment is provided with an end thread and is fixed with a nut 28 in the hole of the mounting plate 26. In another case, the ball pin 14 of the hinge assembly can be placed in the hole of the mounting plate 26 and connected to it by welding 29. At the same time, the ball pin of the hinge assembly can also be made integral with the mounting plate to form a single part.

The hinged joint is preferably mounted on projections 30, 31 of brackets 15, 17 formed at different levels, extending along the longitudinal axis of pipe 13, 11, on which it is secured, beyond its end. Projection 30 of the first bracket 15 with ball pin 14 is located, as a rule, higher than projection 31 of the second bracket 17, equipped with cup 16 with internal spherical cavity 25. At the ends of the outer pipe 13 of span 10 of pipeline 1 and pipe 11 facing each other on support trolley 3, as a rule, a flexible insert 32 is mounted, secured to pipes 13, 11 with clamps or other devices.

When the multi-support mobile irrigation machine is in operation, the hinged joint of the device for connecting the span 10 of the water supply pipeline 1 with the pipe 11 on the support trolley 3 allows the span 10 to deviate by an acceptable angle both vertically and horizontally during movement over an uneven field without destroying the pipeline 1, after which the system for maintaining the straightness of the pipeline 1 is activated and the deviation is eliminated by changing the speed of movement of the support trolley 3.

The presence of several external and internal reinforcing elements on each bracket allows to increase the reliability of the bracket design, the reliability of the bracket connection with the corresponding pipe and the reliability of fastening the parts of the hinge joint to the brackets. The implementation of the hinge joint cup with a through hole in the bottom allows to remove the used lubricant filled with dust and water particles during operation, which also increases the reliability of the hinge joint.

It should be noted that the above embodiments illustrate, but do not limit the utility model, and that those skilled in the art will be able to develop many alternative embodiments without departing from the scope of the attached claims of the utility model. The mere fact that certain criteria are listed in mutually different dependent claims of the utility model does not indicate that a combination of these criteria cannot be used to obtain a beneficial effect.

Claims (9)

1. A device for connecting a span of a water supply pipeline of a multi-support mobile irrigation machine to a pipe on a support trolley, comprising a hinged assembly located on adjacent pipes, the first part of which, including a ball pin, is connected to the outer pipe of the pipeline span by means of a first bracket, and the second part in the form of a cup with an internal spherical cavity is connected to a second bracket fixed to the pipe of the support trolley, wherein the spherical part of the ball pin is located in the spherical cavity of the cup of the hinged assembly, and the first and second brackets are made box-shaped, provided with reinforcing elements, characterized in that each bracket contains internal and external reinforcing elements, wherein the internal reinforcing elements are connected from the inside to the side walls of the bracket connected to the pipeline pipe, and the external reinforcing elements are connected to the outer surface of the side walls and to the outer surface of the pipe on which the bracket is located, wherein the ball pin of the hinged assembly is connected to a mounting strip fixed to the side walls and reinforcing elements of the first bracket, and the cup of the hinged assembly is made with a through hole in the bottom and is secured to the side walls and reinforcing elements of the second bracket. 2. A span connection device according to paragraph 1, characterized in that the hinge joint is installed on bracket extensions formed at different levels, extending along the longitudinal axis of the pipe on which it is secured, beyond its end. 3. A span connection device according to item 2, characterized in that the projection of the first bracket with a ball pin is located above the projection of the second bracket, equipped with a cup with an internal spherical cavity. 4. A span connection device according to item 1, characterized in that each side wall of each bracket is provided with mounting sockets for the mounting protrusions of the reinforcing elements. 5. A device for connecting a span according to paragraph 1, characterized in that a flexible insert, secured to the pipes with clamps, is installed at the ends of the outer pipe of the pipeline span section and the pipe on the support trolley facing each other with their ends. 6. A span connection device according to item 1, characterized in that the ball pin of the hinge joint is provided with an end thread and is secured with a nut in the hole of the mounting plate. 7. A span connection device according to item 1, characterized in that the ball pin of the hinge assembly is placed in the opening of the mounting plate and connected to it by welding. 8. A span connection device according to item 1, characterized in that the ball pin of the hinge assembly is made integral with the mounting plate. 9. A span connection device according to item 1, characterized in that the reinforcing elements are connected to the surfaces of the brackets and pipes by welding.