KR0159000B1 - Ladder for work of switchboard m.d.f. - Google Patents

Abstract

The present invention relates to a braking device structure of a telephone ladder M.D.F. Previously, the MDF working ladder was pressurized by a brake band installed on the lower wheel, which caused the inconvenience of having to move up and down frequently. This caused the accident to fall off the ladder while performing work with the brake released. Often there was. Accordingly, the present invention is a stopper (53; 53 ') protruding to the brake gear 13 formed in the center of the moving wheel 10 shaft in the lower part of the first step of the ladder to lock the operation handle 15 in the upper workbench The stopper (53; 53 ') can be pushed out by simply releasing or locking the braking gear (13), and at the bottom only when the operation handle (15) is placed in a neutral state after the end of work. The stop gears 53 and 53 'of the brake gear 13 are released to prevent the MDF working ladder from flowing by stepping on the brake release pedal 20 by an unconscious action of another person. According to the present invention, in addition to the creation of the stabilizer structure as described above, MDF lightning arrester test tweets are installed on the frame as various efficient auxiliary facilities, and also, the steam bar (3) and the security plug (5) are arranged in the worker's ladder work space. It is a new useful invention that further enhances its use value.

Description

Braking system for M.D.F working ladder

1 is a perspective view of one embodiment of the present invention.

2 is an exploded perspective view of the present invention,

(a) is a perspective view of a part of the ladder upper body assembled.

(b) is a partially disassembled perspective view of the lower part of the ladder.

Figure 3 is a skeleton view of the braking device of the present invention, a perspective view of the main portion installed on the lower footing and the upper working platform.

4 is an operation perspective view of the stopper and the braking release scaffold installed under the braking scaffold as a main part of the present invention.

(a) is a perspective view of the operation of the brake pedal on the left side of the ladder,

(b) is a perspective view of the operation of the brake pedal unit on the right side of the ladder.

5 is a view showing the operation of the stopper is installed on the lower left side of the ladder footrest according to the invention,

(a) is a perspective view of the main part.

(b) is the main part excerpt sectional view.

6 is a view showing the operation of the stopper installed on the lower side of the brake on the right side of the ladder according to the present invention,

(a) is a major excerpt perspective view.

(b) is the main part excerpt sectional view.

Figure 7 is an excerpt of the main part of the brake pedal is locked state (step) in accordance with the present invention stepped,

(a) is sectional drawing which shows internal operation.

(b) is an asymptotic side view of an essential part showing external operation.

8 is an extract of the main part of the brake gear is released by operating the brake release step according to the present invention,

(a) is sectional drawing which shows internal operation.

(b) is an essential part operation diagram showing external operation.

9 is a reference diagram for use in one embodiment according to the present invention.

* Explanation of symbols for main parts of the drawings

1: lower main frame 1A: braking scaffolding installation frame

2: Tool Box 3: Jimbar

4: base 5: security plug

6: safety chain 7: upper workbench

8: front railing 8 ': rear railing

9: guide roller mounting base 9 ': guide roller

10: moving wheel 10A: moving wheel shaft

11: left side brake foot 12: right side brake foot

13: Brake gear 14,14 ': Lightning arrester test tweet

14A: Rechargeable Battery 15: Operation Handle

16: handle mounting bracket 17: hinge

18: operating handle mounting frame 19: scaffolding

19A: Scaffold frame 20: Braking release scaffold

21: wheel holder 22: bearing stand

23 joint 24 operating handle rod

25: adjusting rod 26,26 ': steering rod

27: transfer rod 28,28 ': rod tube

29: operation handle transfer rod with link 30: braking foot release connecting rod

31: return spring 32: guide band

33: Bolt 34: Nut

35: braking foot presser 36: lily fred

37: Braking Foot Hook 38: Cradle

39: Braking release scaffolding 40,40 ': Braking release scaffolding flow tube

41,41 ': Tube shaft 42: Relief fixed arm

43: Braking termination foot arm 44,44 ': Braking termination foot return spring

45,45 ': Tapered Rod 46: Endurance Tube

47,47 ': Termination shaft 48,48': Connecting arm

49: connecting arm return spring 50,50 ': stopper rod

51,51 ': Stopper Rod Tube 52,52': Stopper Casing

53,53 ': Stopper 54,54': Stopper return spring

55,55 ': Stopper hook 56,56': Washer

57: Braking release scaffolding connecting arm 58,58 ': Connecting arm fixed shaft

59,59 ': Stopper casing fixing plate 60: Braking pedal upper limit tap

61: braking foot spring return housing 62: braking foot spring return

63: stopper push rod 64: guide rail

The present invention relates to a braking device structure of a telephone ladder MDF (Maind Distributing Frame) working ladder, in particular, immediately upon stepping on the first step, the braking gear and the operation handles of the upper working platform mounted on the wheel of the working ladder at the same time locked position The main purpose of the present invention is to prevent the safety device from being released even when others step on the brake release foot at the bottom, and to turn the brake gear on and off with the operation handles installed on the upper workbench.

In the current MDF work ladder, the brake wheel is installed at the bottom of the ladder by pressurizing the wheels with a brake band. There is a case that another worker unconsciously pushes the ladder from the bottom, causing an accident that the worker standing on the upper ladder of the ladder falls.

Accordingly, the present invention is to compensate for the above problems to automatically operate the safety device and the braking device when the operator climbs the ladder, the brake and the safety device of the brake on the upper workbench to be released, in the accompanying drawings Looking at the configuration and operation of the present invention by the following.

As an exemplary embodiment and an exploded assembly perspective view of the present invention, as shown in FIGS. 1 and 2, five scaffolds 19 are formed on the scaffold frame 19A on both sides of the upper work platform 7, and the scaffold frame ( 19A) Forming the lower main frame 1 under the ladder where the front railing 8 and the rear railing 8 'are installed in the front and rear, and installing the tool box 2 on both sides of the lower main frame 1; Mounting the wheel 10 to the moving wheel shaft 10A to which the brake gear 13 is attached by attaching the bearing arm 22 to the wheel holder 21 welded to the bottom of the lower main frame 1. The formation of the guide roller 9 'on the guide roller mounting base 9 welded to both side portions of the lower main frame 1 is similar in form to a conventional ladder for MDF work.

The present invention has been invented with respect to the braking device of the telephone switchboard MDF working ladder as described above, the lower main frame (1) and the left and right side braking step 11 first from the frame roughness as shown in FIG. 12) the braking device installed on the unit and the operation handle 15 installed on the upper work table 7 as shown in the accompanying drawings, each of the above, the upper part of the braking footrest mounting frame (1A) of the lower main frame (1) Under the stopper casing fixing plate (59; 59 ') welded across, the stub per casing (52; 52') is welded so that the stoppers (53; 53 ') are welded so that they are welded to the stopper casing (52; 52). A stopper rod (50; 50 ') is introduced into the stop tube (51; 51') by the stopper on the side wall, and the stopper rod (50; 50 ') is formed on the connecting arm fixing shaft (58; 58'). It is held on one side of the connecting arm 48; 48 ', and on the other side of the connecting arm 48; 48', the release shaft ends 47; 47 'are welded to the inner side of the braking step mounting frame 1A. A tube shaft protruding to the outside of the braking scaffolding installation frame 1A through the guide tube 46, wherein the braking release scaffolding flow tube 40; 40 'is disposed on the outer surface of the braking scaffolding installation frame 1A. 41; 41 '), and weld one end of the braking release scaffold mounting bracket 39; 39' onto the braking release scaffold flow tube 40; 40 ', and the braking release scaffold 20 at the other end. And a tapered rod (45; 45 ') on the upper contact portion of the release shaft end (47; 47') located below the braking release scaffolding installation (39; 39 '), and the braking release scaffolding installation (39). The braking release scaffold 20 is welded to the wall of the braking scaffolding installation frame 1A by mounting the braking release scaffold return springs 44 and 44 '.

On the other hand, the braking release scaffolding which is installed on the braking release scaffolding mount 39 above the braking release scaffolding flow tube 40 of the braking release scaffolding mount 39 formed on the braking scaffolding mounting frame 1A of the left side braking scaffolding 11. Braking release foot connecting rods that are projected to the lower side of the braking release footing flow tube 40 'of the braking release footrest mounting plate 39 formed on the arm 43 and the right side brake footrest 12 57) between the braking foot release connector 30 and again, at the end of the relief rod 20 inserted from the end side of the lower main frame 1 of the left foot brake foot 11 to the inner center of the left foot brake foot 11. After inserting the holder 38, the braking footrest hook 37 is welded and formed on the inner inner bending jaw of the left side braking foot 11, and again, the lower main frame 1 outside the left footing foot 11 A brake foot presser (35) and a lily lock fixed arm (42) ) Is fixed to the opposite side to the welding direction of the braking footrest hook 37, and binds the operation handle transfer rod 29 with a link to the end of the relief rod fixed arm 42. On the other hand, by fixing the handle mounting bracket (16) to the bottom of the upper workbench (8) side of the front handrail (8) so that the lower end of the operating handle (15) is bound to the joint (23), the bottom of the joint 23 The operation handle rod 24 is coalesced together with the return spring 31 at one end of the adjustment rod 25, and the other end of the adjustment rod 25 is engaged with the steering rod 26 to intrude into the one end of the transmission rod 27. After inserting the tube 28, the other end of the transmission rod 27 has a rod tube 28 ', and then the steering rod 26' is engaged to bind to the upper shaft of the linkage operation handle transfer rod 29. It is. Meanwhile, after the stopper return spring 54 is inserted into the stopper casing 52; 52 ', the stopper 53; 53' having the stopper hook 55; 55 'formed on the outer periphery of the upper end stopper casing fixing plate ( 59; 59 '), the upper end portion of the stopper 53; 53' protrudes on the stopper casing fixing plate 59; 59 'with the stopper return spring 54 fully relaxed. Meanwhile, as shown in FIGS. 7 to 8, the braking foot spring return housing 62 fixed to the stopper casing fixing plate 59; The stopper pressure bar 63 is welded to the contact portion of the stopper 53 and 53 'on the bottom of the brake footing 11 and the right side brake footing 12.

Looking at the effect of one embodiment according to the present invention configured as described above are as follows.

In the MDF working ladder as shown in FIG. 1 as an example, as shown in FIG. 9, a guide welded to the lower main frame 1 of the MDF working ladder on the guide rail 64 installed at the bottom of the MDF. The guide roller 9 'of the roller mounting table 9 is inserted to prevent the risk of falling of the operator due to inadvertent inclination of the MDF work ladder by the carelessness of the worker, and the worker on the upper work table 7 When the user wants to move the work by holding the MDF, in the conventional ladder, it descends to the bottom of the ladder to release the hand brake, and then moves the position. Occasionally, due to the above-mentioned trouble, safety risks were followed because the MDF work was performed without the hand brake being operated. However, in the present invention, the left side and the right side braking pedals 11 and 12 may be used on either side of the MDF work ladder. When stepping on the upper work platform 7, the upper part of the stopper 53 protruding on the stopper casing fixing plate 59, as shown in the cross-sectional view of the left side brake foot 11 in Figs. As the stopper push rod 63 is pressed, the stopper 53 in the stopper casing 52 is pushed downward, and the stopper rod 50 is connected to the stopper hook 55 formed on the upper shaft of the stopper 53 by an arm return. As shown in Figs. 6a and b, the stopper 53 protrudes below the stopper casing 52 and is inserted into the brake gear 13 gear because the spring 49 is inserted into the elasticity of the spring 49. Is braking. Therefore, the present invention is a device capable of inserting and braking the brake gear 13 by the stopper 53 when the worker steps on the first step of the ladder, while firmly braking the MDF work on the upper worktable 7. As a device structure that can be made, when the work ladder is to be moved according to the MDF work position during the MDF work as described above, as shown in FIG. 3, the operation handle 15 formed on one floor of the upper work bench 7 is When operating in the release position, the linkage operation handle transfer rod 29 is pushed downward, and as shown in FIG. 4, when the relief rod fixed arm 42 is rotated downward with the relief rod 36 as the rotation axis point. At the same time, the brake foot presser 35, which is inclined in the same direction as the relief rod fixed arm 42, rotates downward at the same time and pushes the brake release footrest installation part 39 downward, while braking release footrest installation part 39 is downward. On The attached taper rod 45 presses the release shaft end 47 so that the release shaft end 47 moves in the direction of the arrow A, and the stopper rod 50 moves the connection arm fixing shaft 58 to the rotation axis point. In the direction of departure, the end of the stopper rod 50 inserted into the stopper hook 53, as shown in FIG. Therefore, the stopper 55 is collectively released from the brake gear 13 so that the release of the movable wheel 10 can be operated only by the operation handle 15 on the upper worktable 7. Therefore, in order to apply braking to the brake wheel 10 again using only the operation handle 15 on the upper work table 7, the operation handle 15 is operated to the braking (locking) position, as shown in FIG. The link operation handle transfer rod 29 is turned in the 8-A direction. Then, the relief rod 36 is turned clockwise (on Fig. 8B) with respect to the rotation axis point, so that the relief rod 42 rotates clockwise. Accordingly, while rotating in the same direction as the relief rod fixed arm 42, the brake is released on the rear side of the braking foot release connecting member 30, which is built up in the braking stop foot arm 43 as shown in FIG. At the same time the foot presser 35 is placed horizontally, the brake footrest hook 37 inserted into the left side brake foot 11 is rotated in a clockwise direction with respect to the rotational axis point of the left foot brake foot 11. ) In a horizontal state. Therefore, as soon as the stopper rod 63 protruding from the inner bottom of the braking step 11 presses the stopper 53 shaft built in the stopper casing 52, the stopper 53 'as shown in FIG. ), The stopper rod 50 is inserted into the stopper hook 55 ', so that the stopper 53 is inserted between the gears of the brake gear 13, thereby firmly braking the moving wheel 10. will be.

In the present invention as described above, even if the operator steps on either the left side braking foot 11 or the right side braking foot 12 and the passengers ride on the upper work platform 7, the stopper 53; 53 'is provided on both braking gears 13. At the same time, the upper working platform (7), the stopper (53; 53 ') installed on the lower end of the operation even if it does not go down, to improve the efficiency and safety of work. On the other hand, in the braking device structure of the present invention as a safety device to prevent the stopper (53; 53 ') hanging on the braking gear 13, even if another person unknowingly step on the braking release foot 20, As shown in FIG. 7, the linkage operation handle transfer rod 29 is operated in a locked state so that the brake foot presser 35, which is fixed on the brake release foot flow tube 40; 40 ', is fixed in a horizontal state. In order to switch the operation handle 15 to the locked state of the handle mounting bracket (16).

The present invention, in addition to the configuration of the safe braking device of the MDF ladder for work as described above, by expanding the work area of the MDF top wide, easy to work on the top, the safety ring chain (6) on the top railing side, eliminating the risk of falling. In addition, two MDF lightning arrestor test tweeters were attached to each frame of one foot plate (13) on the lower frame of the upper work table (7) to determine whether the arrester was defective quickly.

In addition, it is equipped with a steaming bar (3) in the lower half of the ladder to increase the work efficiency, install a tool box on the lower ladder main frame (1), the security plug box on the upper front railing (8). Through this, one embodiment of the present invention is a novel invention to further enhance the use value.

Claims (1)

Braking gear (13) at the bottom of the lower main frame (1) of the MDF work ladder, which has five footrests (19) on both sides of the upper work platform (7), and the front and rear handrails (8; 8 ') are installed. A stopper casing fixing plate (59) welded on the upper side of the braking step mounting frame (1A) in an MDF working ladder mounted with the moving wheel (10) below the braking step mounting frame (1A) on the moving wheel shaft (10A). A stopper casing (52; 52 ') with a stopper (53; 53') protruding from the bottom of the stopper casing (52; 52 '), and is connected to the stopper tube (51; 51') on the sidewall of the stopper casing (52; 52 '). Retained in the connecting arm (48; 48 ') of the fixed shaft (58; 58'), the other end is terminated shaft ends (47; 47 ') through the guide tube 46 to the outside of the braking step mounting frame (1A) On the other hand, a braking release scaffolding installation (39; 39 ') is welded to the tube shaft (41; 41') having the braking release scaffolding flow tube (40; 40 ') on the outer surface of the braking scaffolding installation frame (1A). On the other end The east coast scaffold 20 is installed, and the tapered rods 45 and 45 'are welded to the upper contact portion of the disengagement shaft ends 47 and 47' positioned below the braking release scaffolding mounts 39 and 39 '. Under the braking scaffolding mount 39, a braking release scaffolding mount 44 (44; 44 ') is installed on the wall of the braking scaffolding mounting frame (1A), while the braking release scaffolding (11) is formed on the left side of the braking scaffold (11). A braking foot release connector between the braking release foot connecting arm (57) protruding on the side and the bottom of the braking release footrest mounting plate (39) formed on the side of the braking release foot arm (43) welded onto the 39 (30) is fastened, but the brake footrest hook (37) formed at the end of the lower side of the main frame (1) of the lower side main frame (1) of the side of the relief leaf (20) inserted into the left side brake foot 11 ), The braking foot presser (35) and the relief rod fixed arm (42) are mounted on the inner bending jaw, The operating handle 15 fixed to the opposite side to the welding direction of the brake footrest hook 37 and coupled to the handle mounting base 16 on the bottom of the relief rod fixing arm 42 and the upper worktable 7 by a joint 23. The operating handle rod 24, the adjusting rod 25, the steering rod 26, the transmission rod 27, and the return spring 31 are sequentially coupled to each other to connect the shaft to the upper and lower ends of the operation handle transfer rod 29 with a link. Braking system for switching platform MDF working ladder.