KR910008152Y1 - Safety device for mechanical garage - Google Patents

Abstract

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Description

Fall prevention safety device for hydraulic hoist

1 is a state of use of the present invention.

2 is a perspective view of the present invention.

3 is an enlarged view of portion A in operation.

4 is an enlarged view of a portion A when power is turned off.

5 is an enlarged partial view of the right side of FIG.

* Explanation of symbols for main parts of the drawings

1: Safety device body 2: Electromagnet coil

3: electromagnet 4: hook weight

5: External frame 6, 6 ': External frame fixing piece

7: Hanging weight support center 8, 8 ': Hanging jaw

9: jamming fixing piece 10: fastening hole

11: iron piece 12: hook flat surface portion

13, 13 ': binding pin 14: binding hole

21: lower frame 22, 22 ': support arm

23: upper plate 24: hydraulic cylinder

30: Link 31: Bracket

32: upper rail 33: lower rail

34: round bar 35: roller

36: fastening bolt 37: fastening bolt

The present invention relates to a safety device for preventing the vehicle parking table to be lifted and lowered by the fluid pressure due to its own weight and the load of the loaded vehicle.

Originally, the lifting parking lot using fluid pressure is to operate the hydraulic cylinder selection switch to move the parking lot up and down. When the power supply is interrupted by stopping the power supply, the parking plate stops the lifting and maintains a certain position. It is difficult to completely control the weight of the parking plate itself or the load of the car loaded thereon, and the plate has a problem that the plate gradually decreases with time.

Due to this problem, if the parking plate is raised or lowered for a long time, or if the fluid pressure cylinder has an abnormal condition, the hydraulic pressure cannot be maintained because the upper plate is suddenly lowered above the specified speed. The car could be damaged, and in some cases, it could cause damage to life. The object of the present invention is to provide a safety device that prevents the plate, which has once been elevated to a certain position, from falling down due to its own weight or an unexpected failure of the hydraulic cylinder.

According to the accompanying drawings, the structure and the effect of the present invention will be described in detail.

As shown in FIG. 2 and FIG. 3, the safety device main body 1 includes an electromagnet coil 2, an electromagnet 3, a locking weight 4 and an iron piece 11, an outer frame 5 and a fixing piece ( 6, 6 '), in which the electromagnet coils 2 are inserted into the rectangular spaces on the left and right sides of the outer frame 5, and the center support section of the locking weights 4 is placed in the center space of the electromagnet coils 2, respectively. Interlocking latch (4) is interpolated so that (7) can move up and down by external pressure, and forming locking jaws (8, 8 ') at the upper left and right of the center support section (7) of the locking weight (4), The locking weight fixing piece 9 with the binding hole 10 perforated at the end is pressed against the locking weight 4 with a binding pin to be bound, and the iron piece 11 is screwed into the binding hole 10. When the electromagnet (3) is installed on the bottom sole portion of the outer frame (5) and the electric power is drawn into the electromagnet coil, the locking piece (12) is pulled up by the attraction force of the magnet, and the iron piece is fastened to the binding hole (10). Let (11) go up together. The left and right side surfaces of the outer frame 5 are bound to the fixing pieces 6 and 6 'by the binding pins 13.

Meanwhile, as shown in FIGS. 4 and 5, a bracket 31 having rails 32 and 33 formed at upper and lower ends is installed at a predetermined portion of the lower frame 21 of the parking lot, and the parking stand is supported on the space between the upper and lower rails. As the eggs 22 and 22 'are driven left and right, the annular bar 34 connected to the link 30 is internally driven so as to be driven left and right together, and a predetermined portion of the upper rail is cut to bind to the locking weight 4 at the cut portion. The binding hole 14 of the safety device main body 1 is screwed and fastened to the bracket so that the iron piece 11 lowered and the driving of the round bar 34 can be controlled.

Effects of the present invention configured as described above are as follows. As shown in FIG. 1, when the hydraulic cylinder 24 is operated by the selection switch, the cylinder is driven up and down by the fluid pressure, so that the upper plate 23 connected to the cylinder is also lifted up and down together with the left side of the upper plate 23 at this time. The support arms 22 and 22 'connected to the right end of the lower frame 21 and the left end of the lower frame 21 and the right of the upper plate 23 cross each other as the upper plate 23 moves up and down. Drive left and right to maintain the balance of the elevator car, the safety device according to the present invention is to prevent the falling of the upper plate is raised by a certain height by its own weight or unintentionally falling due to malfunction of the selection switch, etc. It works. That is, when the upper plate is elevated to a certain height, the electric power is cut off to stop the operation of the hydraulic cylinder, and the electromagnet of the safety device main body 1 which is fastened to the bracket 31 mounted on the right side of the lower frame 21. When the power source connected to the coil (2) is cut off, the locking weight (4) of the safety device body is lowered, and the iron piece (11) screwed to the locking weight (4) is cut off of the upper rail (32) formed at the upper portion of the bracket. The support arm is lowered through the part and thus blocks the rail space so that the round bar 34 connected to the support arm 22 by the link 30 can be driven to the right side so that the rail space can be driven left and right. 22, 22 'acts to trough the force as a pedestal and allows the upper plate 23 to maintain a constant position.

On the other hand, when the upper plate 23 is lowered to release the parked car, the lower switch connected to the hydraulic cylinder is operated and the power is supplied to the cord connected to the electromagnet coil 2 inserted in the safety device body (1). The lower magnetic force is generated on the electromagnet (3) installed on the bottom of the outer frame (5) of the safety device as shown in FIG. 3 As it is raised up to the cut portion of the upper rail 323, the drive to the right side of the rod 34 is free, so that the upper plate 23 connected by the link 30 is lowered at the prescribed speed.

As described above, the subject innovation of the present invention is that the parking lot which is lifted and lowered by its own weight is attached to the bracket 31 installed at a certain part of the lower frame 21 of the parking lot by a simple structure. It is a useful design to prevent inadvertent fall by the selection switch or the engine failure in the cylinder.

Claims (1)

As shown in FIG. 2, the electromagnet coil 2 is interpolated in a rectangular space portion of which the left and right sides penetrate to the left and right sides of the outer frame 5 bound to the fixing piece 6 by the binding pin 13, In the center space of the electromagnet coil 2, the center support section 7 of the locking weight 4 is interpolated so that it can be moved up and down by external pressure, and the center supporting space 7 of the locking weight 4 is inserted. The locking jaw (8, 8 ') is formed on the upper left and right, the binding hole (10) is drilled at the lower end, and the locking weight fixing piece (9) for screwing the iron piece (11) is binding pin (13). It is attached to the locking weight (4) by '), the safety device for preventing falling of the elevator car, characterized in that the electromagnet (3) is installed on the bottom sole portion of the outer frame (5).