BG207Y1 - Winch - Google Patents

Abstract

The winch is designed to open and shut the ventilation valvesin fire-extinguishing systems. It increases the reliability ofmeshing-unmeshing of the wormscrew-worm wheel system. Theunmeshing device of the winch is designed as a two-worm lever (19)manually or pneumatically driven where its axis of revolving isincluded in space limited by two parallel planes - bothperpendicular to the plane of assembly of the winch. One of theparallel planes includes the axis of revolution of the wormscrewwheel (7), and the other plane includes the axis of revolution ofa cantelever bearing yoke (9). The axis of rotation of the two-armlever (19) favourably matches the axis of rotation of yoke (9).The unmeshing device does not optionally include a one-arm lever(24) for electromagnetic actuation, fitted in the plane parallelto the main surface of the two-arm lever (19) the axis ofrevolution of which coincides with the axis of revolution of thewormwheel (7). The winch has members for manual, pneumatic andelectromagnetic unmeshing.(11) 208

Description

Technical field

The object of the present utility model is a winch intended in particular for opening and closing ventilation valves in fire hazardous systems.

BACKGROUND OF THE INVENTION

A winch is known, having a support plate with a rotor drum on it, the axis of which is parallel to the plane of mounting on the wall. A rope is wound on the drum which passes through a guide roller system and is used to open and close the ventilation valve. The drum is attached to a worm wheel, engaged by a worm shaft. The latter is supported by a cantilever fork, which may have an oscillation amplitude with respect to the worm wheel. The fork is locked in a locked position by a single lever, pressed by a flat spring. To release / release / use a two-lever lever, pressed into the locked position by another flat spring. The system is released by overcoming the resistance of the second spring as a result of releasing the pushbutton locking system. The system can also be released by an additional lever pushed by the anchor of the electromagnet as it is released.

The technical nature of the utility model

According to a useful model, the winch also has a drum with a twisted rope on it, mounted in the winch body. The drum is driven by a worm wheel connected to it, which is engaged by a worm shaft actuated by a handle. The worm shaft is mounted in a cantilever fork, which is held in a secured position by a pin.

The essence of the solution according to the present utility model is that the release / release system is constructed as a two-lever lever designed to act both manually and pneumatically, the axis of rotation of which is enclosed in a space bounded by two parallel planes, both perpendicular to the winch mounting plane, one of the parallel planes including the axis of rotation of the worm wheel and the other plane including the axis of rotation of the fork; the axis of rotation of the two-hand lever favorably coincides with the axis of rotation of the bearing fork. Optionally, the winch may have in the release device a one-way electromagnetic lever positioned in a plane parallel to the main surface of the two-arm lever whose axis of rotation coincides with the axis of rotation of the worm wheel. The two-hand lever that releases the thumb has a pneumatic release support element resting on the piston rod of the pneumatic servo cylinder mounted on the mounting support. On the other side of the lever there is an element for manual release.

The one-way lever is branched at the end near the axis of rotation, while the other end of the lever has a tooth connecting the gripping / contact / plate, which is the intermediate part between the one-way lever and the electromagnet.

The clamping plate is pivotally mounted on the electromagnetic carrier, which is attached to the mounting support and has two surfaces perpendicular to each other, one of which serves as a heel / support surface / for the one-way lever, while the other has a lining that is attracted by the electromagnet. The gripping plate also has a spring attached to it, the other end of which is attached to the electromagnetic carrier.

The elastic member that extends the one-way lever to the position in which it acts on the two-lever lever, which in turn releases the safety pin, is constructed in the form of a coil spring, one end of which is attached to the one-way lever while its other end is attached. to the clamping device in the mounting support.

The thumb that carries the cantilever fork is held in place by an elastic element designed as a coil spring, while the elastic member that tightens the ring to a cleavage position is constructed as a coil spring, one end of which is attached to the cantilever fork until its other end is attached to the clamping device in the mounting support; the spring is positioned at an acute angle to the axis of the worm shaft.

In another embodiment, the worm shaft is mounted in a cantilever bearing fork whose rotational axis is included in a space limited by two parallel planes, both perpendicular to the winch mounting plane, one of the parallel planes including the axis of rotation of the winch. the worm wheel and the other plane includes the axis of rotation of the worm shaft in the engagement position. The worm shaft is pressed against the worm wheel and is held in position by the thumb supporting the fork. The thumb has a cantilever beam in the form of a two-handed lever with arms perpendicular to each other. The thumb release member is constructed as a two-lever arm, on which both arms are spaced apart and the axis of rotation coincides with the axis of rotation of the bearing fork.

The fork has a projection with a support surface located at the other end of the fork diagonal with respect to the fork axis of the fork.

The thumb is shaped like a groove profile and is equipped with rollers mounted inside the angular profile which rests on the support surface of the projection of the fork and the thumb is pivotally mounted on a stud.

In another embodiment, the crankshaft is mounted in a bearing fork whose axis of rotation is positioned outside the space bounded by the two parallel planes, both perpendicular to the winch mounting plane, one of the parallel planes including the axis of rotation of the winch. the worm wheel, while the other plane includes the axis of rotation of the worm shaft in the engagement position. The worm shaft is pressed against the worm wheel and is held in position by engagement with the thumb supporting the fork. The thumb has an outer cantilever beam in the form of a single lever. The thumb-releasing element is in the form of a two-handed lever, the two arms of which are arranged along each other.

The toe has the shape of a grooved profile attached to an angular profile and along with the outer cantilever beam is pivotally mounted on a pin-shaped axis, where the toe has two support surfaces perpendicular to each other, one surface of which is defined on the front and the other surface is defined on the face of one of the arms having an angular profile which is parallel to said face of the chute.

The fork has rollers resting on the support surfaces of the thumb, and the axis of rotation of the rollers is positioned perpendicular to the axis of rotation of the worm shaft.

An advantage of the solution according to the present utility model is the simplicity of the design and the resulting reliability of engagement and securing of the worm wheel-worm shaft system. The release element can be mounted in any chosen way, enabling the winch to be constructed in many variants: with manual and pneumatic cleavage, manual and electromagnetic cleavage, and manual, pneumatic and electromagnetic cleavage at the same time.

Description of the attached figures

The utility model is illustrated by the exemplary embodiment shown in the figures where:

Figure 1 is a side view of the winch;

FIG. 2 - longitudinal profile of the winch; Figure 3 is a top view of the winch;

Figure 4 is a side view of the two-handed lever;

Figure 5 is a side view of the one-way lever;

Figure 6 is a side view of the gripping plate;

Figure 7 is a side view of one winch variant;

Figure 8 is a longitudinal profile of the same winch variant.

Examples of implementation of the utility model

In the winch housing 1, including mounting support 2, a drum 4 is mounted in such a way that it rotates in the body 3. A rope 5 is wound on the drum 4, which passes through a sleeve 6. The drum 4 is connected to a worm wheel 7. mounted on the drum axis. The worm wheel 7 is engaged with the worm shaft 8, which has a hexagonal end for engagement with a handle. The worm shaft 8 is mounted in such a way that it rotates in the cantilever bearing fork 9.

The fork 9 is pivotally connected so that it can have a swing amplitude with respect to the worm wheel 7. The axis of rotation of the fork 9 is included in the space bounded between two parallel plates, both perpendicular to the winch mounting plane, such as one of the parallel planes includes the axis of rotation of the worm wheel 7 and the other plane the axis of rotation of the worm shaft 8 in the engagement position. The fork 9 has a projection 10 with a support surface "a" located at the other end of the diagonal of the fork 9 relative to the axis of rotation of the fork. The axis of rotation of the fork 9 is in the form of a stud 11.

The worm shaft 8 mounted in the bearing fork 9 is pressed against the worm wheel 7 and is supported in the engagement position by the pin 12 carrying the support surface "a" of the projection 10 on the fork 9.

The pin 12 is mounted on a stud 13 that acts as its pivot axis. The toe 12 has the shape of a grooved profile and has an outer cantilever beam 14. The outer cantilever beam 14 of the thumb 12 has the form of a two-arm lever with mutually perpendicular arms. The pin 12 has rollers 15 mounted inside it that lie on the support surface "a" of the projection 10 on the bearing fork 9. The axis of rotation of the rollers 15 is located perpendicular to the axis of rotation of the worm shaft 8.

The pin 12 is held in the engagement position by an elastic element having the form of a helical spring called the first helical spring 16. The elastic member which stretches (pulls / the fork 9 to the cleavage / release position) has the form of a helical spring called a second coil spring 17, one end of which is attached to the fork 9, while the other end is attached to the clamping device in the mounting support 2 and the spring is inclined at an acute angle to the axis of the worm shaft 8.

On the axis 18 is a hinged two-arm lever 19, the end of which lies on the outer cantilever beam 14 of the thumb 12. The arms of the two-arm lever 19, which have the form of a flat strip, are perpendicular to each other. The axis of rotation 18 of the two-arm lever 19 coincides with the axis of rotation of the bearing fork 9.

The outer cantilever beam 14 and the lever 19 form a two-lever system, both of which are L-shaped.

The two-arm lever 19, which releases the pin 12 through the outer cantilever beam 14, has a support element 20 whose surface is perpendicular to the main surface of the lever 19 and whose edge (side) is parallel to the main edge of the flat web. The support element 20 can be operated by the piston rod 21 of the pneumatic servo cylinder 22 mounted on the mounting support 2.

On the other side, with respect to the support element 20 of the two-arm lever 19, there is a manual release element 23 whose surface is perpendicular to the main surface of work 19 and whose bead is parallel to the main surface of the flat web.

In parallel to the two-arm lever 19, which releases the pin 12 via the outer cantilever beam 14, a single-arm lever 24 may be mounted whose axis of rotation coincides with the axis of rotation of the worm wheel 7.

The single lever is actuated by the support / pusher / element 20 of the two-lever 19. The elastic element that pulls the single-lever to the position of interaction with the two-lever 19 is a third coil spring 25, one end of which is attached to a gripping device in the mounting support. 2.

The one-way lever 24 has a branched end "b" near the axis of rotation.

The other end of the single lever 24 has a tooth 26 connecting the gripping plate 27. The latter has two perpendicular surfaces. It is the intermediate element between the one-way lever 24 and the solenoid 29. The gripping plate 27 is pivotally mounted on the carrier 28 of the solenoid 29, which is attached to the mounting support 2. One of the surfaces of the gripping plate 27 serves as the heel / support surface / for the one-lever lever. 24, while the other has a lining 30 which is attracted by the electromagnet 29. The elastic element which pulls the gripping plate 27 to the engagement position is constructed as a coil spring 31, one end of which is attached to the gripping plate 24. astina 27 and its other end is attached to the electromagnet magnet carrier 28.

Way of acting

After the operator pulls the member 23 of the two-arm lever 19 toward him, the other end of the lever presses the outer cantilever beam 14 of the pin 12, thereby overcoming the spring resistance 16. The pin 12 rotates about the stud 13 and its rollers 5 displaced from the support surface "a" of the projection 10. Under the influence of the force exerted by the second spring 17, the bearing fork 9 rotates about its pin 11 and deviates away from the worm wheel 7. The worm wheel system 7 worm shaft 8 is cleaved / release.

As a result, the rope 5 can develop freely from the drum 4, releasing the blockage of the ventilation valve. The valve opens under the action of, for example, a pressure-operated actuator.

When using a pneumatic servo cylinder that can be mounted in the winch, the brutal rod 21 at the same pressure presses the support element 20 of the two-arm lever 19, which, when rotated, releases the thumb 12 through the outer cantilever beam 14. As a result, the worm shaft system 8 - worm wheel 7 is cleaved / released /.

When using the electromagnet 29, which can be mounted in the winch in addition to a single lever 24 and a clamping plate 27, a power outage causes the lining 30 to be released from the clamping plate 27 and to release the lug 26 of the single lever 24. The third spring 25 causes the single lever 24 to rotate and the gripping plate 27 is displaced. The single-lever 24 presses the support element 20 of the two-lever 19, forcing it to rotate and uncouple the worm shaft system 8 - the worm wheel 7, through the outer cantilever beam 14 of the pin 12. The spring 31 holds the gripping plate 27 in a deflected position. this way allows the system to lock in again.

The worm shaft system 8 - the worm wheel 7 is engaged again by a handle after the resistance of the second spring 17 is overcome.

The winch release device can be mounted in any way. In any case, it includes a two-arm lever 19 actuated by the outer cantilever beam 14 of the thumb 12. In addition, the device may comprise pneumatic release / release elements / which include a cylinder 22 with a piston rod 21 of a pneumatic servo cylinder, along with a feeder system, or may comprise electromagnetic cleavage members, which include electromagnet 29, a single lever 24, and a clamping plate 27. Elements for both pneumatic and electromagnetic cleavage may also be mounted.

Another example of an embodiment of the winch according to the present utility model is shown in Figures 7 and 8. In this embodiment, the element releasing the cantilever bearing fork 109 of the worm shaft 108 to the cleavage position has the form of a two-arm lever 119 pivotally disposed on its axis 118, both arms of the two-arm lever extending along each other.

The axis 118, serving as the axis of rotation of the two-arm lever 119, is located in a space bounded by two parallel planes, both perpendicular to the plane of mounting of the winch and including the axis of rotation of the worm wheel 107 and the axis of rotation of the bearing fork 109 which axis has the form of a stud 111.

One end of the two-arm lever 119 rests on the outer cantilever beam 114 of the thumb 112. The shoulder of the two-arm lever that rests on the outer cantilever beam 114 of the thumb 112 is clipped (there is an undercut).

The bearing fork 109 is locked by a connecting element 110. The fork 109 is pivotally mounted on its mounting pin 111 so that it can deviate away from the worm wheel 107. The worm shaft 108, which is mounted in the bearing fork 109, is pressed against the worm wheel 107 in a locked position via the thumb 112 which carries the connecting element 110 of the bearing fork 109.

The toe 112 is pivotally mounted on its stud 113 and has an angular profile with an attached groove profile that partially closes the angular profile. The thumb 112 has two support surfaces perpendicular to one another, one surface of which is defined on the face side "al" of the chute profile and the other surface on the face side "a2" of one of the arms with an angular profile that is parallel to front side of the "al" profile above. Also mounted on stud 113 is the outer cantilever beam 114, which has the form of a single-lever arm and is actuated by the thumb 112.

The pin 112 is actuated by rollers 115 mounted in the connecting element 110, which are immobilized in a locked position by the support surfaces "al" and "a2" of the pin 112. The axis of rotation of the rollers 115 is positioned perpendicular to the axis of rotation of the worm shaft. 108.

The toe 112 is held in a position of engagement by an elastic member having the form of a helical spring called the first helical spring 116.

In this embodiment, by manually clamping the member 123 of the two-arm lever 119, the other end of the lever compresses the outer cantilever beam 114 of the thumb 112, thereby overcoming the resistance of the first spring 116 and releasing the thumb 112. Under the influence of forces, applied by the second spring 117, the bearing fork 109 rotates on its stud 111 and deviates away from the worm wheel 107. The worm wheel system 107 - the worm shaft 108 is cleaved / released /.

When a pneumatic servo cylinder and / or electromagnet is used, the winch is released analogously to the first embodiment described, with the single lever 124.

Also in this second embodiment, the winch release device can be mounted in any chosen manner. In any case, it contains a two-lever arm 119 actuated by the outer cantilever beam 114.

In addition, the device may comprise elements for pneumatic or electromagnetic separation.

It is also possible to mount components for both pneumatic and electromagnetic separation.

The examples presented above do not limit the implementation of the utility model.

Claims

Claims (12)

1. Winch, in particular for opening and closing movable ventilation valves in fire-fighting systems, consisting of a casing, comprising a reel-mounted drum mounted in the body and driven by an attached worm wheel, secured by a worm shaft, and / releasable / by means of a system of levers and springs mounted in a cantilever fork and held in a locked position by means of a pin, characterized in that the release device is constructed as a two-handed lever (19) intended for manual and pneumatic action, the axis of which is rotation / 18 / is included in the space bounded by two parallel plates and two perpendicular to the winch mounting plane, one of the parallel planes including the axis of rotation of the worm wheel 111 and the other plane including the axis of rotation of the bearing fork / 9 /; the axis of rotation / 18 / of the two-hand lever / 19 / favorably coincides with the axis of rotation of the bearing fork / 9 / and in addition, the release device optionally comprises a one-way lever / 24 / actuated by an electromagnet (29) arranged in a plane parallel to the main surface of the two-arm lever / 19 / whose axis of rotation coincides with the axis of rotation of the worm wheel / 7 /. Winch according to claim 1, characterized in that the two-arm lever (19) releasing the thumb (12) has a support element (20) for pneumatic cleavage lying on the piston rod (21) of the pneumatic servo cylinder (22), which is attached to the mounting support (2) and has, in the position opposite to the support element (20), a manual release element (23). Winch according to claims 1 and 2, characterized in that the one-way lever (24) has a branched end (b) near the axis of rotation, while the other end of the one-way lever (24) has a tooth (26) connecting the gripping plate / 27 / which is an intermediate part between the one-way lever / 24 / and the electromagnet / 29 /. Winch according to claim 3, characterized in that the gripping plate (27) is pivotally mounted on the electromagnet carrier (28) attached to the mounting support (2) and has two surfaces perpendicular to each other, one of which serves as the heel for the one-way lever (24), while the other has a lining (30) which is attracted by the electromagnet (29) and further characterized in that the gripping plate also has a spring (31), one end of which is attached to the clamping plate (27) while the other end is attached to m of the carrier / 28 / of the electromagnet / 29 /. A winch according to claim 3 or 4, characterized in that the elastic member which pulls the one-way lever (24) to the position where it acts on the two-lever lever (19), thereby releasing the thumb (12), has the form of a coil spring (25), one end of which is attached to the one-way lever (24), while the other end is attached to a clamping device in the mounting support (2). Winch according to any one of claims 3 to 4, characterized in that the finger (12) supporting the bearing fork (9) is held in the engagement position by an elastic member shaped like a first coil spring (16) until the elastic an element that tightens the ring / 9 / to the cleavage position is formed as a second coil spring / 17 /, one end of which is attached to the ring / 9 /, while its other end is attached to the clamping device in the mounting support / 2 / and the spring is inclined at an acute angle to the axis of the worm shaft / 8 /. Winch according to any one of claims 1 to 6, characterized in that the worm shaft (8) is mounted in the cantilever bearing fork (9), whose axis of rotation is included in the space bounded by two parallel planes, both perpendicular to the winch mounting plane, one of the parallel planes including the axis of rotation of the worm wheel / 7 / and the other plane includes the axis of rotation of the worm shaft / 8 / in the engagement position and where the worm shaft / 8 / is pressed by the worm wheel / 7 / in the engagement position through a pin / 12 / bearing the bearing fork / 9 / having an outer cantilever beam / 14 / in the form of a two-arm lever / 19 / with mutually perpendicular arms, while the element releasing the thumb / 12 / has the form of a two-arm lever / 19 / with arms perpendicular to each other and whose axis of rotation / 18 / coincides with the axis of rotation of the bearing fork / 9 /. Winch according to claim 7, characterized in that the bearing fork (9) has a projection (10) with a support surface (a) located at the other end of the diagonal of the bearing fork (9) with respect to the axis of rotation of the bearing. the fork / 9 /. Winch according to claims 7 and 8, characterized in that the pin (12) having the shape of a groove profile is provided with rollers (15) located inside the groove profile which lie on the support surface (a) of the projection / 10 / on the bearing fork / 9 /, where the finger / 12 / is pivotally mounted on a stud / 13 /. Winch according to any one of claims 1 to 6, characterized in that the worm shaft (108) is mounted in the bearing fork (109) whose axis of rotation is positioned in a space bounded by two parallel planes and two perpendicular to the plane. on mounting the winch, one of the parallel plates including the axis of rotation of the worm wheel (107) and the other plane includes the axis of rotation of the worm shaft (108) when it is in the engagement position; it is pressed against the worm wheel (107) and is held in the engagement position by the thumb (112) carrying the bearing fork (109) and where the thumb (112) has an outer cantilever beam (114) in the form of a single-lever until the releasing member the thumb / 12 / is in the form of a two-handed lever / 119 /, the two arms of which are located along each other. A winch according to claim 10, characterized in that the pin (112) has the shape of a groove profile attached to the angular profile and, in addition to the outer cantilever beam (114), is mounted so as to rotate the axis of rotation , which is a stud / 113 /, where the finger / 112 / has two support surfaces perpendicular to each other, one surface of which is defined on the face / a1 / of the groove profile and the other surface is defined on the face / a2 / on. one of the arms having an angular profile parallel to said groove side on / a1 /. Winch according to claims 10 and 11, characterized in that the bearing fork (109) has rollers (115) lying on support surfaces (a1), (a2) of the thumb (112) and that the axis of rotation of the rollers / 115 / is located perpendicular to the axis of rotation of the worm shaft / 108 /.