JPS6336265B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elevating device equipped with a rope, a drum, and a braking mechanism, which is suitable for application to, for example, an evacuation device in the event of a building fire or a climbing device for mountain climbing.

In a conventional evacuation device in which a wire rope is wound around a drum, as shown in FIG. There is a problem where it swings left and right within the range of . Therefore, the user who attaches the device containing the drum 2 to his or her body is psychologically shaken, and even when descending from a not-so-high position, a sense of psychological fear precedes the user, and this type of device actively It has the disadvantage of not being utilized.

Furthermore, when descending using the above-mentioned device, if the user's weight is light, a conventional structure such as a structure based on the frictional force of the rotating peripheral surface of the drum (for example, Japanese Patent Application Laid-Open No. 50-72495) may prevent the user from falling. Since the speed depends on the load and the material of the component parts, when evacuating quickly, the falling speed cannot be controlled freely, which may lead to disasters such as delays in escape. There is.

Furthermore, if the user is unable to fully use this type of device, such as a child, it is necessary to separately control the falling speed at a distance from the device. However, in the past, such countermeasures have been insufficient, and it is currently difficult for elderly people and children to use the device.

In view of these points, the present invention has a structure that allows the user to freely change and control the falling speed, and even when the user is in a state of psychological turmoil during use.
Emergency braking can be operated without error, allowing elderly people and
The main purpose is to propose a lifting device of this type that has a wide range of usability considering the use by children and can be actively used by anyone without feeling psychologically frightened.

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 2 is an external perspective view showing an example of the present invention. 1 indicates a wire rope, which extends upward from a drum installed inside the housing 13. A board, actually a chest plate, is screwed to the casing 13, and belts 4 and 5 for fixing the body are firmly attached to the chest plate 3. The belt 4 is hung like a sash around the shoulders, the belt 5 is held around the waist by inserting both legs, and the one-touch belt fasteners 4a, 5 are attached.
The structure is such that it is firmly engaged at point a. Housing 1
A rope winding handle 6 is removably provided on the right side of 3, and is removed when used exclusively for lowering. The wire rope 1 is provided with a cover 7 having a built-in rope regulating guide that protrudes from the upper part of the housing 13 at a certain length, and on the left side of the cover 7 is a braking lever 8 that regulates and brakes the rotation of the drum during descent. is installed. Reference numeral 9 indicates a connecting wire of the brake lever 8, and reference numeral 1a indicates a locking device provided at the tip of the rope 1.

FIG. 3 is a sectional view taken along the line - in FIG. 2, and is a transverse sectional view centered on an axis parallel to the breastplate plate 3. The rope 1 passes through a rope regulation guide 10 provided inside the cover 7 and is wound around a drum 11. The rope regulation guide 10 is a set of three rollers 1.
As shown in FIG. 4, it is guided while being held between rollers 12 having a concave circumference. Each roller 12 is rotatably or fixedly attached to a shaft 13 supported by the cover 7 divided into two parts. In this case, one set of rollers 12 provides frictional resistance to the rope 1, as shown in FIG.
The axis between c and the second roller 12b is slightly narrowed,
The second roller 12b is connected to the first and third rollers 12.
It can be arranged so as to be inserted between c. Therefore, the frictional resistance between the rope 1 and the roller 12 becomes large. Two or more sets of three rollers 12 can be provided depending on the size of the lifting device. 14 is a screw that integrates the divided cover 7;
Reference numeral 15 indicates screws for fixing the cover 7 to the breastplate plate 3, respectively. The drum 11 is fitted onto a shaft 17 horizontally mounted on left and right bearings 16 erected on the chest plate 3, and an internal gear 19 is provided with internal gears 18 and 19 on the flanges on both sides, respectively. As shown in FIG. 5, three planetary gears 21 are disposed between a sun gear 20 fitted to a shaft 17, and a planetary gear mechanism is employed. 22 is a flange 17 provided integrally with the shaft 17
The support shaft of the planetary gear 21 is shown in FIG. Therefore, as the drum 11, ie, the internal gear 19, rotates clockwise, the sun gear 20 rotates counterclockwise. The internal gear 19 is further provided with a friction plate 24 fitted with the same number of teeth as the internal gear 19, and a sun gear 20.
and friction plates 26 fitted into square sleeves 25 formed integrally with the friction plates 26 are assembled in a stacked state alternately. Therefore, as the drum 11 rotates clockwise, the friction plate 24 rotates clockwise and the friction plate 26 rotates counterclockwise. , 26, the mutual frictional resistance will further increase.

Figure 6 is a sectional view taken along the line - in Figure 3;
The figure is a sectional view taken along the line -- in Figure 6, and shows the brake lever 8.
By operating the drum 1 by both friction plates 24 and 26,
FIG. 1 is a diagram showing a mechanism for performing the first braking.
In FIG. 7A, the other 9a of the connecting wire 9 is
It is fixed to one end of a shift lever 30 that rotates around a pin 29 that is set up on a support plate 28 formed protruding from the bearing 16 . The other end of the shift lever 30 is the shaft 1
7 and is engaged with a shifter 31 that is slidably fitted in the axial direction, and a press pin engagement disc 32 is integrally fixed to the shifter 31. In this case, the shift lever 30 is configured such that the arm on the wire 9 side is long and the arm on the shifter 31 side is short with respect to the pin 29.
It is designed so that the pressing force required when operating the brake lever 8 provided at the tip of the wire 9 is small. The engagement disc 32 has three holes bored around its circumference in which the friction plate pressing pins 33 engage. Friction plate press pin 3
3 is fitted into holes 34a formed at three circumferential locations on the side surface of the pressing pin guide 34, as shown in FIGS. 3 and 6. It goes without saying that one end of the pressing pin 33 is aligned with the position of the hole 34a. The press pin 33 passes through a hole 35a formed in the internal gear support plate 35 and is in contact with the friction plate 24, and the other end is engaged with a snap ring 36 to prevent the engagement disc 32 from coming off. . The pressing pin 33 is composed of a large diameter portion that fits into the internal gear support plate 35 and a small diameter portion that fits into the pressing pin guide 34, and is compressed between the pressing pin guide 34 and the stepped portion of the pressing pin 33. A spring 37 is interposed. Therefore, under normal conditions, the pressure pin 33 is pressed against the friction plate 2 by the pressure of the compression spring 37.
4 and 26 are brought to the sun gear 20 side, and the friction plate 2
4 and 26, and thus the rotation of the drum 11 is braked. Even when the weight of a person is added, the drum 11
It goes without saying that the compression spring 37 should be adjusted appropriately so that the rotation of the spring is damped. Furthermore, sealing oil is sealed inside the friction plates 24 and 26, which are partitioned by the internal gear 19 and the internal gear support plate 35, and the planetary gear device is built in, thereby increasing the braking effect and friction of the friction plates 24 and 26. Contributes to the prevention of damage. Therefore, seal rings 38 are buried in necessary locations such as between the shaft 17 and the drum 11, between the shaft 17 and the pressing pin guide 34, and between the pressing pin 33 and the pressing pin guide 34, so that oil does not leak outside. Take care not to leak.

As shown in FIG. 8, an external small gear 41 is meshed with the internal gear 18 on the left side of the drum 11 in FIG. 3, and the shaft 42 of the small gear 41 is rotatably supported by the bearing 16. . The tip of the shaft 42 is a bearing 16
The rope winding handle 6 is formed to protrude outward.
It is formed into an angular shape for fitting. Therefore, by rotating the handle 6, the rope 1, which has been braked by the rope regulation guide 10, is regularly wound around the drum 11 under tension. After the winding of the rope 1 is completed, the handle 6 can be removed from the shaft 42.

Next, how to use the lifting device of the present invention will be explained.
First, when using the evacuation device as an evacuation device, the rope 1 is always wound around each room in a hotel, etc., and the anchor 1a is fixed and installed. In an emergency, first fix each belt 4, 5 to your body and head outside the building. At this time, since the drum 11 is in a braking state, the device will not suddenly lower due to the weight of the body. The user grips the cover 7 with his right hand to stabilize his body, and with his left hand moves the brake lever 8 in the direction indicated by arrow A in Figure 3B.
By pressing in the direction, the connecting wire 9 is pulled as shown in FIG. 7B, so the shift lever 30 rotates counterclockwise about the support shaft 29.
The press pin engagement disk 32 is biased to the right in the figure together with the shifter 31. In this case, the shift lever 30
As a result, the pressure on the shifter 31 is doubled, so even if the brake lever 8 is operated with a small force, the braking force is effective. Therefore, as shown in Figure 3B,
Press pin 3 engaged with press pin engagement disk 32
3 is biased to the right in the figure against the compression spring 37, and the pressure on the friction plate 24 is gradually released. Therefore,
The frictional resistance between the friction plates 24 and 26 decreases, and the rotation of the drum 11 causes the rope 1 to be stretched in the direction of the center of gravity of the device, that is, in the downward direction.
At this time, the rope 1 is wound around the drum 11, but since it is guided from a fixed position inside the cover 7 by the rope regulation guide 10, the center of gravity increases as the rope 1 approaches the left and right ends of the drum 11. There will be no movement, or the amount of movement of the center of gravity will be extremely small. To restore the original state after use, press the brake lever 8.
While pressing , the handle 6 is engaged with the shaft 42 and rotated. Therefore, the rope 1 is regularly wound around the drum 11 under tension because of the frictional resistance caused by the rope regulation guide 10.

Next, when using the rope as a climbing tool, fix the locking device 1a of the rope 1 to the bedrock using a harken, and while releasing the braking state by pressing the brake lever 8, roll in the handle 6. Rotate in the direction. If it becomes difficult to continue the rotational operation, the brake lever 8 is immediately released from the pressure to maintain the braked state, so that it can remain in the brake position for a long time.

As described above, according to the present invention, in a lifting device in which a braking mechanism is provided on a drum around which a rope is wound, a friction plate meshing with an internal gear to which rotation from the drum is transmitted, and a friction plate meshing with the internal gear The friction plates that are transmitted through the planetary gear mechanism are provided so that their rotational directions are opposite to each other, and a means is provided for pressing from one side of the friction plates to release the braking or pressing of the drum. Compared to one friction plate that is fixed, the two friction plates will wear more severely, increasing the braking force. In addition, the friction plates are subject to severe wear, so if they need to be replaced, they can be replaced by releasing the engaged state and removing them. If one of the friction plates was fixed as in the past, it would be difficult to remove it easily and the number of maintenance steps would increase significantly, but the present invention eliminates these drawbacks. Ru.

In addition, when braking is performed while the drum is rotating, the relative rotational speed of both friction plates is greater than that of a structure in which one of the friction plates is fixed, thus achieving a braking effect with less pressing force. can be done. Therefore, according to the present invention, when the user's weight is light, if the user uses a conventional structure, for example, a structure that relies only on the frictional force of the rotating peripheral surface of the drum, the falling speed will depend on the load and the material of the constituent members. This solves the problem of not being able to freely control the falling speed when evacuating quickly, which can lead to disasters such as delays in escape. have an effect.

Further, according to the present invention, both friction plates are in a laminated state, and a brake lever for applying braking by pressing from the side surface of one friction plate or releasing the press is provided via a connecting means and a transmission mechanism, Since the lever is removable, even if the user is unable to fully use this type of device, such as a child, the brake lever can be separated from the main body and placed separately from the device. The falling speed can be controlled by a skilled person, so that it can be used effectively by the elderly and children.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram for explaining the conventional drawbacks, Fig. 2 is an external perspective view showing an example of the present invention, Figs. 3 A and B are sectional views showing the internal structure and diagrams showing its operating state, Figure 4 is a cross-sectional view taken along the line in Figure 3A, Figure 5 is a cross-sectional view taken along the line in Figure 3A, Figure 6 is a cross-sectional view taken along the line in Figure 3A, and Figures 7A and B are cross-sectional views taken along the line in Figure 3A. FIG. 6 is a cross-sectional view taken along the line in FIG. 6 and a diagram showing its operating state, and FIG. 8 is a cross-sectional view taken along the line in FIG. 1... Rope, 3... Board, 7... Cover, 1
0...Rope regulation guide, 11...Drum, 12
a, 12b, 12c... roller, 18, 19...
Internal gear, 20...sun gear, 21...planetary gear, 24, 26...friction plate, 33...friction plate pressing pin, 37...compression spring.

Claims (1)

[Scope of Claims] 1. In a lifting device in which a braking mechanism is provided on a drum around which a rope is wound, a friction plate that meshes with an internal gear to which rotation from the drum is transmitted and a planetary gear from the internal gear A lifting device characterized in that a friction plate that transmits transmission through a mechanism is provided so that the rotation directions are opposite to each other, and a means is provided for pressing from one side of the friction plate to release the braking or pressing of the drum. Device. 2. The elevating device according to claim 1, wherein the friction plates are in a laminated state. 3. The elevating device according to claim 1, wherein the means for braking or releasing the pressure is a braking lever with a connecting wire and a transmission mechanism interposed therebetween. 4. The elevating device according to claim 3, wherein the transmission mechanism is a mechanism for slightly adjusting the operating force of the brake lever.