RU208652U1 - POWER CLAMP CONNECTION - Google Patents

Abstract

This utility model relates to the field of mechanical engineering and can be used in the manufacture of spacecraft. Designed for fixing and transmitting torque to the executive elements of the structure, pipe connection. This design is used in structures with high positioning accuracy, where it is necessary to exclude the failure of the structure setting under high impact loads or impacts. type of connection. The essence of the utility model lies in the fact that in the connection the clamp and the element to be fixed have corrugations, and also in the connection there is an insert made of plastic material, which deforms when the clamp is tightened, forming adhesion along the side surface of the protrusions of the corrugations. This utility model is implemented in positioning high-precision equipment on the rod of the spacecraft. This connection makes it possible to eliminate the failure of the equipment settings at the stages of launching the spacecraft, separation from the launch vehicle and the transfer of high torque during abnormal operation. At the same time, the design of the power clamp connection allows you to simply adjust the position of the rod and does not require highly qualified personnel.

Description

This utility model relates to the field of mechanical engineering, and can be used in the manufacture of spacecraft. Designed for fixing and transmitting torque to the actuating elements of the structure. This design is used in structures with high positioning accuracy, where it is necessary to avoid failure of the structure setting under high impact loads or impacts.

Known from the existing prior art is a “Toothed clamp assembly, clamp and corresponding pipe connection” (patent RU No. 2450198, C2, F16L 21/06, 02.09.2008). The toothed clamp consists of two C-shaped halves tightened with screws. Each of the 2 C-halves has toothed inserts that are able to engage with the surface of the pipe being swaged, which improves the grip of the clamp and the pipe.

The disadvantage of this design is that the clamp holds the pipe only in the axial direction.

Known "Device for clamping tubing for coupling-reversing machines" (patent RU No. 147604, U1, B23Q 3/06, 29.01.2014). The clamping device includes self-aligning slips that clamp the pipe. The design of the rams has a serrated surface that contacts the clamped pipe, fixing it from moving.

The device has a number of disadvantages:

- engagement with the surface of the pipe being pressed damages (uncontrollably) the surface of the pipe (extrusion of depressions with teeth);

- the transfer of loads occurs only along the tip of the teeth.

The following devices are also known:

- “Bicycle handlebar adjustment device” (US patent No. 2005/0109152, A1, B62K 21/16, 11/25/2003);

"Removal of the steering wheel of a bicycle" (patent WO No. 2014/123502, A1, B62K 21/16 08/14/2014).

The design of these devices has an extension (body), which is attached to the vertical tube of the front fork of the bicycle, and a clamp (clamping block), which clamps the tube of the bicycle handlebar with screws.

The disadvantages of this design is that the element fixed by the clamp is kept from turning frictionally (due to friction forces), since the contact surfaces of the mating parts are smooth. The friction force is directly proportional to the tightening torque of the screws. Such a connection is unreliable under shock loads, vibrations, high loads. The named disadvantage often manifests itself, for example, when passing mountain trails on a bicycle or falling on it. When hit, the steering wheel turns out and loses its adjustment.

The utility model "Removable holder for a T-shaped trampoline handle" (patent RU No. 188436, U1, A63B, 5/16, 04/12/2019) was chosen as a prototype. This utility model includes a housing and a clamp. On the one hand, the body has threaded holes, through which the target (executive) structure is fixed - the trampoline handle. On the reverse side of the body, a recess is made in the form of a segment of a circle, into which the trampoline frame pipe is inserted, and threaded holes are located along the perimeter, through which the body is fixed to the trampoline frame. The clamp, in turn, also has a recess in the form of a circle segment, into which the trampoline frame pipe is inserted and smooth holes around the perimeter for screws. To fix the structure on the trampoline frame, the body and clamp are installed opposite to each other and tightened with screws. The disadvantages of this design is also the transfer of loads by friction, because. the surfaces of the recesses of the body and the clamp are smooth. Also, on the trampoline frame, when the body and clamp are tightened or rotated, scuffs and scratches can form, which spoils the appearance of the trampoline and the mechanical properties of its elements.

The task to be solved by the claimed technical solution is to expand the technical means in this area, as well as to improve the mechanical characteristics of this type of connection.

This task is achieved due to the fact that the power clamp connection contains a body, clamp, tightening elements. Power clamp connection is made with the possibility of detachable fixation of the element to be fixed. An insert made of plastic material is installed between the fixed element and the clamp with the body, and the insert can be made of two or more elements. Corrugation is applied on the body, clamp and fastened element along the surfaces associated with an insert made of plastic material, while corrugation is made in the form of pyramids on the body and clamp of the collar.

The utility model is illustrated by drawings:

Fig.1 - Clamp (body and clamp);

Fig.2 - Section D-D, shown in Fig.1;

Fig.3 - Power clamp connection;

Fig.4 - Corrugation on the fixed element;

Fig.5 - Section A-A shown in Fig.3;

Fig.6 - Deformation of an insert made of plastic material;

Fig.7 - The use of power clamp connection in the industry.

Power clamp connection contains clamp, consisting of body 1 and clamp 2, tightening elements 3. copper). Insert 5 can be made of two or more parts. On the body 1, the clamp 2 and the fixed element 4, corrugations are applied on the surfaces associated with the insert 5 made of plastic material. When the body 1 with the clamp 2 is pulled together by the tightening elements 3, the insert 5 is deformed, while part of the material is pressed into the space of the recesses of the corrugation of the fastened element 4 and the body 1 with the clamp 2, forming an engagement along the side surface of the corrugation protrusions on dimensions C and D (rigid connection) . Since the corrugation is applied on all contact surfaces of the body 1, the clamp 2 and the fastened element 4, the engagement occurs over the entire surface of the joint. The corrugation on the body 1 and clamp 2 is made in the form of tetrahedral pyramids. Housing 1 and clamp 2 can be made of various designs and have a variety of interfaces for installing structural details (flange, pipe, nut, etc.) and installation dimensions. When tightening the body 1 and the clamp 2 with tightening elements 3, damage to the fastened element and the clamp is excluded, because all deformations remain on the more plastic material of insert 5.

Power clamp connection works as follows. Let the fixed element 4 rotate with a certain torque M. This torque is transmitted to the insert 5 through the engagement on the dimension D, and then to the body 1 and the clamp 2 through the engagement on the dimension B. Thus, the clamp also rotates around the fixed element 4. The tightening elements 3 tighten the elements of the power clamp connection, preventing the formation of gaps between the contacting parts during operation.

This utility model is implemented in the positioning of high-precision equipment on the rod 6 of the spacecraft (see Fig. 7). This connection makes it possible to eliminate the failure of the equipment settings at the stages of launching the spacecraft, separation from the launch vehicle and the transfer of high torque during abnormal operation. At the same time, the design of the power clamp connection allows you to simply adjust the position of the rod 6 and does not require highly qualified personnel.

Claims (3)

1. Power clamp connection containing a body, clamp, tightening elements, made with the possibility of detachable fixation of the fixed element, characterized in that an insert of plastic material is installed between the fixed element and the clamp with the body, and corrugation is applied on the body, clamp and the fixed element along surfaces mated with an insert made of plastic material. 2. Power clamp connection according to claim 1, characterized in that the corrugation on the body and clamp of the clamp is made in the form of tetrahedral pyramids. 3. Power clamp connection according to claim 1, characterized in that the insert is made of two or more elements.

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