SU1423827A1 - Device for locking movable link of kinematic joint - Google Patents

Abstract

The invention relates to the field of instrumentation and can be used for locking the moving links of mechanisms. The goal is to expand the functionality of the device by allowing simultaneous locking of the moving link during its rotational and translational motion. The device contains a stationary link-holder 1, a movable element made in the form of a rod 3 and a ring 2, a lock element made in the form of two spring-loaded rollers 4, 5 and located between the clip and a rod, and a mechanism for switching off the lock element, including a leash 7, mounted with the ability to interact with the rollers. The rod 3 is mounted for translation in a direction perpendicular to the axis of rotation of the ring. 3 з.п, ф-л, 6 Il. S O)

Description

 to

with

00

Yu

. physical /

The invention relates to instrumentation and can be used, and in particular, for locking. Podvils.ny links mechanisms pr and their rotary Iyh.i and translational movements.

The aim of the invention is to expand the functional capabilities of the Device by providing the possibility of simultaneous locking of the sub-link with its rotational 1 translational motion.

Figo 1 shows a device. Figure 2 shows a section A-A in figure 1 in the case of: e performing rolling 2 (a element with a rectangular transversal utterance; in fig. 3 - the same with round n (with a cross section; in figure 4 - cross section 5B is a device in section in the case of the implementation of an arbor in the form of a sliding plug; 6 is the same, in the case of execution of a boyma with a conical inner - in the surface.

The device for locking the movable link of the kinematic connection consists of a fixed link-cage 1, a movable link containing a ring 2 installed with the possibility of rotation relative to the cage 1, and w | tangu 3 installed with possible translational movement in the end 2 Between the rod 3 and the yoke 1i are installed the rollers 4 and 5, in the axial openings of which are mounted the ends of the spring 6 of the torsion. On ring 2, set the lRn with the possibility of rotation of the leash 7 | connected with the handle 8 to turn off the stopper. In the case of the execution of podvodka 7 in the form of a sliding fork (See. Fig. 3), it consists of two-element 9 and 10, installed with the possibility of mutual. opposite rotation about the axis 1t fixed on the ring 2. Elements 9 and 10 containing bending 12 and 13 in contact with the rollers 4 and 5, as well as bendings 14 and 15 in contact with the cam 16 connected with the shut-off handle from Gopor.

In the case of a cage 1 with a conical inner surface 17, the outer surfaces of the rollers 4 and 5 are made as a part of the torus surface 1 $ and set at an angle, the angle between the axis and the forming surface 17. To ensure the possibility of jamming and wedging (locking on and off

s 0

5 g 5

five

0

0

five

NIN stopper) pojruKOB 4 and 5, the geometrical dimensions of the roller-cops (see Fig. 1) of the rod 3 and the holder 1 are satisfied. letvor yup1imi condition:

d + t cosyi ----- cos -,

where 2j is the angle between the tangents to the circumference of the roller in the places of its contact with the clip 1 and the rod 3j f is the angle of the roller's friction on

holder and rod-, d - diameter of the roller 4 and 5; D - inner diameter

clips 1;

t is the size of the rod 3. The rod 3 may be made rectangular (Fig. 2) or circular (Fig. 3). In the latter case, the rollers 4 and 5 are performed with steps (Fig. 4). For greater consistency in Figures 2, 3 and 6, rollers 4 and 5 are conventionally shown coaxially with one another.

The operation of the device for locking the moving link - rod 3 is carried out as follows.

In the absence of an impact on the handle 8, connected with the leash 7, the elements 9 and 10 (fig. 3) of the leash in the form of a sliding fork, the bar 3 is locked, i.e. does not have the ability to rotate around the collars 1 together with the ring 2 and the translational movement in the ring 2. This is due to the fact that the torsion spring 6 pushes the rollers 4 and 3 in different directions, wedging them between the yoke 1 and the rod 3. In this case, the roller 3 prevents the QOBMecTHo boom 3 with ring 2 in the X direction from rotating and the boom 3 moving in the Y direction (shown by solid arrows), and the roller 4 prevents the boom 3 from rotating and translating in the opposite directions -X and -Y (the dotted lines are shown).

mi arrows).

I

To move the rod 3 in the directions X and At, the handle 8 is turned so that the lead 7 presses on the roller 3 (wedged it). If it is necessary to move the rod in the directions -X and -H, the handle 8 is turned in the opposite direction, wedging the roller 4. In the device in FIG.

the bends 14 and 15 of the elements 9 and 10 of the sliding guide, which are rotated to the flat sides on the axis 1 1 and with the help of the bend, 12 and 13 move the rollers 4 and 5 one to another, wedging them, and thereby provide the possibility of turning and translating rod movement 3 n both directions. When turning the cam 16 backward, the spring 6 pushes the rollers 4 and 5 one from the other, jamming them between the yoke 1 and the rod 3, stopping it from any movements. Rotated1 {and, containing a sub-17knoe star.no, made in the form, a movable link, ycTanoBJUUiftoe with the possibility of wrenching into, a locking element, a short lead in all two spring-loaded pojkKOBs, and a mechanism for turning off the stopper, element, including a leash, and a leash, turned on the leash, and a lock-off switch, an element that turns on the leash the ability to interact with the rollers, characterized in that, in order to expand the functional capabilities of the devices by means of the simultaneous locking

20

and do; In moving, the movable link is made in two sections in the form of a rod and a ring and is installed with the possibility of translational movement of the rod in a direction perpendicular to the axis of rotation of the ring, and the rollers are located between the yoke and the rod.

25

2. The device according to claim 1,

about tl and h ae e with

by that

that the leash is articulated

1 and 5 are limited by the size of the sample in the cage 1. In the device shown in Fig. 6, the rotation of the rod 3 is not limited because the inner surface of the yoke 1 is tapered and placing the rollers at an angle to the axis of rotation of the ring 2; the yoke 1 does not prevent the multi-turn rotation of the rod 3 together with the ring 2. The outer surface 18 of the rollers, made as part of the torus surface, ensures their jamming between the rod 3 and konich tion surface 17 both 1 despite the fact that the normals to the surfaces at their points of contact of the rollers 4 and 5 and the holder 1 are perpendicular to the axis of rotation of the rollers.

The use of the invention allows to significantly expand the functionality of the device by allowing the simultaneous locking of the movable link during its rotational and translational motion.

thirty

35

y u

not in the form of a plug

installed on the ring.

 3. The device according to claim 1, characterized in that the inner surface of the sleeve 1 1 is copically compacted, the outer working surface of the rollers is rounded as a part of the torus surface, the rollers are set at an angle to the axis of rotation of the movable link, and the angle between the axes of the rollers and the movable link is equal to the angle between the axis and the conical surface of the cage.

A. The device is pop.1, which differs from the fact that, in order to simplify the design of the device, the elastic element P is made in the form of a cylindrical helical torsion spring, the ends of which are connected to the rollers, and the axis of the spring is paraplelny to the axis of the rollers.

relocation.

Claims (3)

1. Device for locking the movable link of the kinematic connection and do; In moving, the movable link is made in two sections in the form of a rod and a ring and is installed with the possibility of translational movement of the rod in a direction perpendicular to the axis of rotation of the ring, and the rollers are located between the yoke and the rod. moving link with its rotational 2. The device according to claim 1, about tl and h ae e with by that that the leash is articulated moving link with its rotational y u not in the form of a plug installed on the ring.  3. The device according to claim 1, characterized in that the inner surface of the sleeve 1 1 is copically compacted, the outer working surface of the rollers is rounded as a part of the torus surface, the rollers are set at an angle to the axis of rotation of the movable link, and the angle between the axes of the rollers and the movable link is equal to the angle between the axis and the conical surface of the cage. A. The device is pop.1, which differs from the fact that, in order to simplify the design of the device, the elastic element P is made in the form of a cylindrical helical torsion spring, the ends of which are connected to the rollers, and the axis of the spring is paraplelny to the axis of the rollers. -X FIG. 2 S-5 fae. H fie. feed five fae. 6