JPH079879U - Rapid fall prevention device for elevators and traveling equipment - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The purpose was to prevent rapid drops due to accidents such as heavy lifting objects in elevators and traveling equipment. [Composition] The distribution rail 5 and the eccentric roller are combined with a hydraulic damper 6 to utilize the characteristics of the hydraulic damper 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a safety device for a sudden drop due to an accident of an elevator, various elevators, and various traveling devices.

[0002]

[Prior art]

 Safety devices used in current elevators, various elevators, and various tilting traveling devices stop when the lifting heavy objects drop due to abnormalities, because the ratchet pawls are stuck in the ratchet type metal fittings. Or, in the case of an inclined traveling device, some brakes are applied.

[0003]

[Problems to be solved by the device]

 The safety device of the conventional device does not operate when there is no accident. Since it is operated in the event of an accident, it will remain in that state for a long time, and it will malfunction due to rust or dust. In addition, it is not difficult for the ratchet claw to fit completely into the ratchet-type metal fitting. The braking of a tilting traveling device is also difficult to operate when it is instantaneous. It is necessary that the safety device be constantly moving up and down, running, and be able to respond immediately in the event of an accident. It is also essential that no impact is applied during a rapid drop due to an accident or the like.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the description will be made with reference to the drawings. As shown in FIGS. 1 and 2, apart from two rails (1) on which four wheels (3) roll on a heavy lifting object (2), Provide a long and gentle distribution rail in the descending direction, and provide two distribution rails (5) in the rising direction with a number of short and slightly large distributions. A roller (11) is held at the tip, with the pin (10) as a fulcrum, it keeps horizontal when descending and is free when ascending. Attach the hydraulic damper (6) with two nuts (8) on each side of the heavy lifting object (2), attach the roller (11) to the distribution rail (5), and return the hydraulic damper (6). Press with force. Although the hydraulic damper is widely used by changing its shape, since it is a component used in the present invention, the hydraulic damper (6) used in the present invention will be described once. When it hits and stops, an impact force is generated on the object and the object that hits it. In this, kinetic energy of a moving object is converted into impact energy. This kinetic energy increases as the mass increases and as the speed increases, and when it stops, a large impact force is generated, and this impact energy is converted into other energy. The structure is such that the piston moves in a cylinder tube filled with oil, and the oil absorbs energy by the orifice of the hole. The size of the hole can be changed by adjusting the adjustment knob (7), and the magnitude of the impact force can be freely changed. The rod of the piston goes out and is equipped with a mounting bracket to which the link A (9) is mounted. The return force of the piston and the return time are determined by the strength of the spring inserted inside, and the return time is 10 mm and is about 0.1 to 0.5 seconds. The piston is always returned in the forward direction by the spring.

Further, as shown in FIGS. 4 and 5, in the traveling device when the vehicle has a certain inclination, one of the four wheels (3) attached to the weight lifting object (2) is used. The eccentric roller (15) is fixed to the center of the eccentric roller shaft (14) connecting the two wheels (3), and the links B (17) are fixed to both sides of the eccentric roller shaft (14) by holding the rollers (11) rotating around the outer circumference. ), Two oil flow rate adjusting hydraulic dampers (6) are concentrically attached to the eccentric roller (15) with two nuts (8).

[0006]

[Operation] When the weight lifting object (2) gently descends with the chain (4) or the wire rope (16), the roller (11) attached to the tip of the hydraulic damper (6) moves to the slope rail ( Roll at 5). However, due to the slope, it rolls while pushing the piston of the hydraulic damper (6), but as described above, even if the piston of the hydraulic damper (6) is gently pushed due to the characteristics of the hydraulic damper, almost no force is applied, and the weight of the lifting object (2) falls naturally. The eccentric roller (15) also has the same principle as that of the distribution rail (5). When the wheel (3) rotates due to eccentricity, the eccentric roller (15) rotates and the piston of the hydraulic damper (6) rotates. Push. At this time, when the eccentric roller (15) is used, only one of the hydraulic dampers (6) serves as a hydraulic damper. As described above, the hydraulic damper (6) is internally provided with a spring for returning the piston, so that the roller (11) is constantly pressed against the rolling surface of the slope rail (5) or the eccentric roller (15). At the time of ascent, the distribution rail (5) has a slightly large and short distribution, so the link A (9) does not operate the pin (10) so that the hydraulic damper (6) does not work as shown in FIG. A spring (13) with a weak force enough to restore the link A (9) to its original position is attached by the spring hook (12). In the case of the eccentric roller (15), the same action as in the case of descending is obtained only by rotating in the opposite direction to that in case of descending. When the heavy lifting object (2) rapidly drops due to an accident, it tries to move the piston of the hydraulic damper (6) more rapidly due to the distribution and eccentricity. However, due to the characteristics of the hydraulic damper, the piston of the hydraulic damper (6) is not pushed rapidly, and the lifting object (2) has its operating force adjusted beforehand by the adjusting knob (7). It descends gently without stopping within the range of its operating force.

[0007]

【Example】

 The heavy lifting object (2) rolls on the rail (1) by the four wheels (3), and the roller (11), the distribution rail (5) and the eccentric roller (15) are strong. Use materials with Further, as shown in FIG. 4, four hydraulic dampers (6) may be attached to the four sides of the heavy lifting object (2) without vertically using the wheel (3) and the rail (1) as shown in FIG. It is a thing. The larger the number of hydraulic dampers (6), the more effective. Two eccentric rollers (15) may be used and four hydraulic dampers (6) may be attached.

[0008]

[Effect of device]

 The rapid fall prevention device in the elevator traveling device of the present invention broadens the range of design of the structure of each elevator and traveling device up to now, and enhances the safety effect. Further, when the device of the present invention is used together with the existing device, or in combination, the further effect can be exhibited.

[Brief description of drawings]

FIG. 1 is a view showing a state in which the distribution rail (5) of the device of the present invention is raised and lowered when it is used.

FIG. 2 is a bottom view of FIG. 1 with a heavy lifting object (2) cut away.

FIG. 3 is a diagram showing the movement of a link A (9) in FIG.

FIG. 4 is a top view of four hydraulic dampers (6) used.

FIG. 5 is a plan view when an eccentric roller (15) of the tilt traveling device is used.

6 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 rail 2 heavy lifting object 3 wheel 4 chain 5 distribution rail 6 hydraulic damper 7 adjustment knob 8 nut 9 link A 10 pin 11 roller 12 spring hook 13 spring 14 eccentric roller shaft 15 eccentric roller 16 wire rope 17 link B

Claims (2)

[Scope of utility model registration request] 1. A distribution rail (5) having a long and gentle slope in the descending direction and a short or large distribution in the ascending direction, and a roller (11) at the tip. ) Is held, the pin (10) is used as a fulcrum to maintain a horizontal position when descending, and a free linking mechanism A (9) which is free when ascending is mounted on an oil flow rate adjustable hydraulic damper (6). A rapid drop prevention device in an elevator and a lifting device configured to be attached to a heavy lifting object (2) holding four wheels (3). 2. A center of an eccentric roller shaft (14) connecting two wheels (3) of either one of the four wheels (3) attached to a lifting object (2) rising and descending. ,
The link B (1) fixed by fixing the eccentric roller (15) and holding the rollers (11) around the outer circumference on both sides thereof.
Oil flow rate adjustable hydraulic damper (6) via 7)
A quick fall prevention device for an elevator and a lifting device, which is configured so that two rollers are mounted concentrically with an eccentric roller (15).