UA78030C2 - Swivel joint of conduits and hydraulic equipment - Google Patents

Abstract

The invention relates to the crane building and it is intended for transfer of working fluid from the pump installed on a stationary supporting part of the crane to the hydraulic equipment on its turntable. A swivel joint of conduits and hydraulic equipment contains a cylindrical housing with vertical channels fixed on the supporting part of the crane, the channels are connected by radial openings with annular grooves on the housing, holder fixed on the turntable of crane with enclosing of housing, with radial openings opposite the annular grooves of housing with branch pipes, seal rings and conduits with connecting pipes. In the plane transverse to the rotational axis the housing is divided into two parts - upper and lower parts with the presence in each part of half of total quantity of vertical channels. In the lower part the open-end holes are executed, through which pass the conduits to vertical channels of upper part. Conduits are connected with vertical channels by welding to the surfaces of lower ends of the parts of housing. Technical result - improvement of compactness of the unit of swivel joint due to decrease of diametrical overall size.

Description

Description of the invention

The invention relates to crane construction and is intended for the transmission of working fluid from the pump installed in the stationary support part of the crane with a hydraulic drive to hydraulic equipment on its rotary platform - to hydraulic motors, hydraulic distributors, hydraulic cylinders, etc., and in the reverse direction.

It is known as an analog, a movable connection of pipelines, which contains fittings installed with the possibility of mutual rotation, the ends of which are connected by an annular groove with a diametrical hole on one of the fittings and with sealing of the mating surfaces | see book UDC 69.057.70. O.A. Smirnov and others. "Sydravlicheschies strelovye 70 kraniya on special chassis". M. "Vyissaya school". 1989, Page 68, Fig. 52. A photocopy of the title page and pages b7 and 68 are attached to the materials of this application on the 1st sheet. in the 1st note |

During the operation of the analogue, the working fluid flows from the channel of one fitting through the diametrical hole into its annular groove, from where it flows into the channel of the second fitting, regardless of the angle of rotation of the latter.

The disadvantage of the analogue is the limitation of its functional capabilities by connecting only one input-output 12 of the working fluid.

It is also known, selected as a prototype for the majority of the essential features that coincide and for the purpose, a rotary joint containing a cylindrical body fixed on the supporting part of the crane with vertical channels connected by radial holes with annular grooves on the body, fixed on the rotating platform of the crane and covering the body of the clamp with radial holes with nozzles made at the same horizontal level with the annular grooves of the housing, and pipelines with fittings screwed from below into the vertical channels of the housing, while each annular groove relative to the clip is sealed on both sides with sealing rings.

During the operation of the prototype, the working fluid from the pipelines through the vertical channels and radial holes in the housing enters its annular grooves, from where it flows through the radial holes in the bracket to its nozzles and from to the executive hydraulic equipment of the rotating platform of the crane at any point with a change in the angle of rotation of the bracket . Gee)

The prototype expands the functionality of the analog due to the simultaneous connection of many inputs-outputs of the working fluid, of which there are preferably at least six in the rotating connection of the faucet.

The structural disadvantage of the prototype is that the pipelines are screwed into the vertical holes of the housing, and at a pressure of 20MPa and more, such a screw connection of them requires reliable sealing with the use of locknuts on the pipelines, which in turn entails an increase in the center-to-center distance between adjacent vertical channels and, accordingly, an increase in the diametral size of the rotary joint as a whole.

The technical objective of the invention is to improve the compactness of the rotary joint unit by reducing the diameter. Gee)

To solve the task, the design of a rotary joint is proposed along with the essential features characteristic of the prototype, such as a cylindrical body fixed on the supporting part of the crane with - vertical channels connected by radial holes with annular grooves on the body, fixed on the rotating platform of the crane with the coverage of the body a clip with radial holes opposite the body grooves with nozzles, sealing rings and pipelines with fittings, contains new, significant "signs" different from the prototype, namely - in the plane transverse to the axis, the body is divided into two parts - upper and lower - with the presence in each part half of the total number of vertical channels, in the lower part through holes are made, through which the pipelines are passed to the vertical channels of the upper part, while the pipelines

And" connected to the vertical channels by welding to the surfaces of the lower ends of the thick body,

During the operation of the rotating connection, the working fluid from the pipelines through the vertical channels and radial holes in both parts of the housing enters their annular grooves, from where it flows through the radial holes in the 49 clamp into its nozzles, regardless of the angle of rotation of the clamp around the housing. When assembling the rotary unit and the connection, first half of the total number of pipelines is connected to the vertical channels of the lower

Ge | parts of the housing and weld the pipelines to the surface of its end, while free access to the welding places is provided by a significant center-to-center distance between the pipelines due to the absence of adjacent ones to be connected to the vertical channels of the upper part of the housing. Then, adjacent pipelines are passed to the upper part of the case through the 20 through holes of the lower part, they are connected to its vertical channels in the presence of a gap between the upper and lower parts, which provides access to the welding places of the pipelines of the upper part with an intercenter distance between them similar to the lower part. Next, both parts of the housing are oppositely brought together and the housing assembled in this way is inserted into a clip with sealing rings between the adjacent annular grooves and the ends of the housing parts. 25 Therefore, a new set of essential features, in comparison with the prototype, improves the compactness of the rotary assembly

GF) connection due to a more compact reduced distance between adjacent pipelines, achieved due to the separation of the housing and welding of pipelines, in particular, due to the removal of locknuts on the pipelines.

The essence of the invention is explained by the drawings, where:

Figure 1 shows the general view of the rotary joint; 60 in Fig. 2 is a bottom view according to arrow A in Fig. 1.

Fixed on the supporting part | of the crane in Fig. 1, the cylindrical body in the plane 2 transverse to the axis is divided into two parts - the lower C and the upper 4, with the presence in each part of half of the total number of vertical channels, respectively, 5 and 6. Each vertical channel is connected by a radial hole 7 to an annular groove 8 on the body. The vertical channels 5 of the lower part C are connected to pipelines 9 by welding in places 10, and the vertical channels 6 of the upper part 4 are also connected by welding in places 11 to pipelines 12, previously passed through through holes 13 in the lower part C of the case.

Pipelines 9 and 12 at the opposite ends are equipped with connecting fittings not shown in the drawings. The housing can be made with a central opening 14 for wires to the electrical collector on the crane's rotary platform. The rotating platform 15 is attached to the covering body of the clip 16 with radial holes 17 opposite the annular grooves 8 on the body. Each annular groove 8 relative to the clamp is sealed on both sides by sealing rings 18. The radial holes 17 of the clamp 16 are extended with nozzles 19 for pipelines to the hydraulic equipment of the crane's rotary platform.

During the operation of the rotary joint, the working fluid from pipelines 9 and 12 through vertical channels 5 and 6 7/o | radial holes 7 in both parts C and 4 of the housing enters their annular grooves 8, from where it flows through the radial holes 17 in the bracket 16 into its nozzles 19 regardless of the angle of rotation of the bracket around the housing.

Claims (1)

The formula of the invention, , , , , and what, The rotating connection of pipelines and hydraulic equipment, which includes a cylindrical body fixed on the support part of the crane with vertical channels connected by radial holes with annular grooves on the body, fixed on the rotating platform of the crane with the coverage of the body of a clip with radial holes opposite the grooves of the body with nozzles, sealing rings and pipelines with fittings, which is distinguished by the fact that in the plane transverse to the axis of rotation, the body is divided into two parts - the upper and lower, with the presence in each part of half of the total number of vertical channels, and in the lower part there are through holes through which pipelines to vertical channels of the upper part, while the pipelines are connected to the vertical channels by welding to the surfaces of the lower ends of the body parts. c) (ze) "c) (ee) and - - and" -i (ee) («in) (95) (42) name) 60 b5