CN2081878U - Multifunctional working ladder - Google Patents

Abstract

The utility model relates to a multifunctional working ladder being composed of a few main components, such as a main ladder, an auxiliary ladder, a shift axis device, a positioning regulation device, etc. The position regulating device and the shift axis device reaches the action to enforce the elevating height of an elastic regulation by the components orderly combined. The multifunctional working ladder can be turned into a step ladder use.

Description

Multifunctional working ladder

The relevant a kind of multifunctional working ladder of the utility model especially refers to a kind ofly can promote effect and have the working stand of advanced character on the function scope of application.

Working stand commonly used owing to adopt the level altitude design, is not made the suitably elastic telescopic ability of height, it is one of drawback, and it uses only for simple function again, can't reach the principle of economic benefit, it is two of a drawback, and in addition, working stand can't be used for the place as the stair step shape, so it uses the place object to be restricted, it is three of a drawback, moreover, dismounting difficulty (all dead) with the rivet nail, the position so its volume quite takes up space, it is four of a drawback.

The purpose of this utility model is to promote the working stand scope of application, makes working stand also can make ladder and uses.

Another purpose of the present utility model is to make working stand can have the flexible ability of suitable elasticity adjustment height.

Working stand of the present utility model can be transformed into ladder to be used, adopting the exchanging shaft device, make two pairs of positioning of rotating that are main backstop work 180 degree of correspondence on the body frame, cooperate two pairs of secondary bracing frames that are correspondence of subframe to do upper and lower extension and landing action respectively again, and reach the step shape ladder of a suitable height.

The bracing frame of working stand of the present utility model, can make suitable Height Adjustment, be on main ladder, to cooperate one group of subframe of assembling again, its secondary bracing frame then depends on the main backstop respectively, track on the mat body frame makes subframe do lifting and slides, and through positioning adjustment device, makes secondary ladder be adjusted to one suitably during height, energy mat positioning adjustment device is main terraced and secondary terraced in conjunction with fixing, and reaches lift adjustment and firm effect.

The utility model is used as secondary ladder location during lifting action on main ladder with positioning adjustment device, even also main ladder is terraced in conjunction with pair, the anxiety of avoiding secondary ladder to drop, the element of its use is under the structure that cooperates mechanics principle, it is respond well really in conjunction with crystallized ability, and has safety.

A kind of multifunctional working ladder that the utility model provides:

(1) utilizes positioning adjustment device, make working stand under the cooperation of major and minor ladder, need not to use any instrument can reach single one or both sides purpose of adjustable height simultaneously, break through the fraud that the work on hand ladder adopts the height Fixed Design.

(2) utilize the exchanging shaft device, make working stand can be transformed into ladder and use, and can need height, and made suitable Height Adjustment, reach the purpose of multi-functional, improve the fraud of work on hand ladder simple function according to it.

(3) demolition combination function easily makes such working stand save the time of combination during fabrication, stores and transports also comparatively simple and conveniently, can save a large amount of expenses and cost.

(4) with the customer, when no matter when and where using, not only carry light, and the unexpected restriction that is subjected to the place, this structure all is to use screw and fixed by nut to finish, and except that the folding dress was convenient, this structure met the mechanical structure principle more fully, so the unexpected situation that the screw loose or dislocation is arranged is used safer.

About the structure of the utility model, be described as follows with the possible embodiments conjunction with figs. now:

Fig. 1 is the utility model stereo appearance figure;

Fig. 2～1 is the main backstop and the main crossbearer assembling three-dimensional exploded view of the utility model;

Fig. 2～2 are the main backstop and the main crossbearer combination dissected figure of the utility model;

Fig. 3～1 is the exchanging shaft device three-dimensional exploded view of the utility model;

Fig. 3～2 are the internal construction cut-away view of the utility model exchanging shaft device embodiment;

Fig. 4 is the positioning adjustment device three-dimensional exploded view of the utility model;

Fig. 4～1 is the assembled sectional view of the positioning adjustment device of the utility model;

Fig. 5 is the lift in height embodiment outside drawing of the utility model;

Fig. 6 is for being implemented on the enforcement illustration of staircase;

Fig. 7 becomes the enforcement illustration of ladder for the utility model;

Outward appearance of the present utility model sees also Fig. 1, includes main ladder (1), secondary ladder (2), exchanging shaft device (3) and positioning adjustment device main members such as (4);

Main ladder (1) (1B) becomes corresponding institute to form by forward and backward main backstop (1A) respectively; Should before main backstop (1A) respectively by a left side that is the l font, right main support column (11-A) (11-B) prop up into about corresponding setting, an and left side, right main support column (11-A) (11-B) then is a corresponding Contraband shape left side by two respectively, right framework (111) (112) is formed (seeing also shown in Fig. 2～1), left side framework (111) goes up edge tail and establishes protruding grain (111-A), and following edge tail is established concave arc (111-B), left framework (112) goes up edge tail and establishes concave arc (112-A) in addition, and following edge tail is established protruding grain (112-B), the two mat concaveconvex structure becomes a rail mounted and can piece together one mutually, and constitute a ducted body (113) in the centre, a moreover left side, right main brace post (11-A) (11-B) become corresponding within side surface be provided with and place the cover endless tube (12) that is hollow form in the quantity hole (113) that is equidistant; This cover endless tube (12) end-rings is established flange (121); With engaging hole (114), and establish screw (122), the two ends that cooperate main spreader (13), wear left and right main brace post (11-A) respectively (11-B) in cover endless tube (12), and mat screw (14) is fixed it with the screw (122) (131) that nut (15) passes cover endless tube and main spreader (13) in regular turn, please cooperate and consult shown in Fig. 2～1 and Fig. 2～2; The member and the compound mode of back main backstop (1B) are identical with the combining structure of preceding main backstop in addition, so do not repeat them here;

Secondary ladder (2) is (2B) to become corresponding institute to form by forward and backward secondary bracing frame (2A) respectively; Secondary bracing frame (2A) before being somebody's turn to do is by one respectively

The left and right secondary support column (21-A) of shape (21-B) two become

The corresponding setting of type, and left and right secondary support column (21-A) (21-B) within side surface be equipped with groove (22), can make forward and backward main backstop (1A) left and right main support column (11-A) half one (11-B) (1B) of main ladder (1) be placed through inside; Moreover left and right secondary support column (21-A) (21-B) within side surface be equipped with groove (22), can make forward and backward main backstop (1A) left and right main support column (11-A) half one (11-B) (1B) of main ladder (1) be placed through inside; Moreover left and right secondary support column (21-A) (21-B) before end surfaces be provided with equidistant quantity screw (23), matching pair spreader (24) be across this left and right secondary support column (21-A) (21-B) on, mat stator (25) is fixed on it again, sees also shown in Figure 1; In addition, the element structure and the compound mode of this secondary bracing frame in back (2B) are identical with the combining structure of preceding secondary main backstop (2A), so do not repeat them here;

Exchanging shaft device (3) (see also Fig. 3～1 and cooperate shown in Fig. 3～2) spiral shell respectively is located at forward and backward main backstop (1A) top (1B); It includes guide bar (31), left and right sides bonding pad (32) (33), rotating shaft (34) and handle base main members such as (35).

Guide bar (31), it is a body of rod shape, its end is established flange (311), and establish chase (312) apart from flange (311) inner surface ring, and establish two apart from chase (312) inner surface and be corresponding chamfered edge plane (313), (313) inner surface appropriate location is established through hole (314) in the plane again, and this guide bar (31) surface is equipped with spring (37);

Left side bonding pad (32), groove (321) is established at its edge, and the surface is equipped with cavity (322), and is connected with otch (323) at cavity (322) appropriate location, establishes two small holes (324) in cavity (322) appropriate location again;

Right bonding pad (33), be in the groove (321) that is matched with left bonding pad (32), can do spinning movement, its bonding pad (32) position, surface engagement left side is equipped with cavity (331), be connected with otch (332) and appropriate location and establish two rectangular openings (333), this rectangular opening (333) also is connected with otch (334) and becomes corresponding setting with the otch (334) of another rectangular opening (333);

Rotating shaft (34), be installed in (322) (331), the cavity of left and right bonding pad (32) (33), wear through hole (341) in it to run through guide bar (31), and the surface is provided with prominent grain (not indicating among the figure) to be sticked in left and right bonding pad (32) (33) cavity (322) (331) otch (323) (332), slide when preventing to locate, and establish bead (342) in rotating shaft (34) end, bead (342) surface wears notch (343), to run through inserted sheet (38) is set;

Handle base (35), its both sides are respectively set up projection (351) separately, in the hole (324) and rectangular opening (333) that are placed through left and right bonding pad (32) (33), and be equipped with shrinkage pool (352) in the inner surface centre, hold before with clamping guide bar (31), and handle base (35) side is established small holes (353), after each elements combination of above-mentioned exchanging shaft device (3), mat pin (39) runs through the through hole (314) of small holes (353) and guide bar (31) in regular turn to be fixed up again;

Positioning adjustment device (4) (seeing also shown in Figure 4), the secondary bracing frame (2A) that system is installed in secondary ladder (2) respectively is (2B) in the secondary spreader (24) of each both sides, in order to adjust the working stand height and to give reaching firm fixed effect in conjunction with main ladder (1) and secondary ladder (2); Its position fixing knob (41) appropriate location is provided with fixed bar (42) and motion bar (43); This fixed bar (42) is equipped with the clamping block (44) of tool screw (441) in regular turn, spring (45) and packing ring (46), and wear in regular turn finish after, and fixed bar (42) end flattened (as Fig. 4～1), and be placed through in the secondary spreader (24) of secondary ladder (2), the hole (441) of this clamping block this moment (44) is relative connected state with the hole (251) of stator (25), mat screw (A) is when the spiral shell hole (251) of being located at stator (25) and the hole (441) of clamping block (44) are gone up (please cooperate and consult shown in Fig. 4～1) this positioning adjustment device (4) and implemented in regular turn again, its fixed bar (42) can be positioned in secondary spreader (24) hole, in addition motion bar (43) then is placed through respectively in the main spreader (13) of the aperture (24) of secondary ladder (2) and main ladder (1) in regular turn, make main ladder (1) and secondary ladder (2) be able to the fixed bar (42) and motion bar (43) of mat positioning adjustment device (4), and reach the purpose of positioning combination.

The working stand of the new structure of forming by said modules, it is implemented to regulate the high action situation and (sees also Fig. 4, Fig. 4～1, shown in Figure 5), at first position fixing knob (41) application of force of positioning adjustment device (4) is extracted out outward, hereat the spring (45) gone up of fixed bar (42) under the compressing of packing ring (46) (because the fixed bar end is the pressing shape, its pressing diameter area is bigger than the hole diameter of packing ring, so cause the end of fixed bar (42) can packing ring forced to move forward), make spring (45) be forced to tighten in one of clamping block (44) side, right its motion bar this moment (43) but breaks away from the main spreader (13) of main ladder (1) interior (because of the length of motion bar (43) shorter than fixed bar (42)), the application of force is under drop-down situation again, can make secondary ladder (2) make lifting action along main ladder (1), when adjusting to the suitable height place of desire, toward interior pressure motion bar (43) and fixed bar (42) are penetrated with in main cross bar (13) and the secondary cross bar (24) once again respectively positioning adjustment device (4) application of force again, to reach the purpose of adjusting the location.

The utility model more may be implemented in the surface state that staircase is step shape, any side that as long as it adjust highly rise to appropriate location after, give positioning adjustment device (4) is done the action of location fastening again, its operation sequence as mentioned above, do not repeat them here, and reach purpose (as shown in Figure 6) stably.

The utility model can be made general ladder and use, its operation sequence, at first must be with the left side of exchanging shaft device, right bonding pad is launched respectively, down behind 180 degree, the Height Adjustment of being made positioning adjustment device again (sees also Fig. 3～1, and cooperate shown in Fig. 3～2), at first handle base (35) application of force is pulled out outward, make flange (311) pressuring spring (37) of guide bar (31) tighten inserted sheet (38) in rotating shaft (34) in a side, and the chase (312) that this guide bar (31) is gone up just in time is sticked on the two end centres of inserted sheet (38), hereat, two projections (351) that handle base (35) is gone up break away from a left side respectively, the hole (324) and the rectangular opening (333) of right bonding pad (32) (33), do not rotate at guide bar (31) then, and under the situation of rotating shaft (34) rotation, rise up to pair ladder (2) secondary bracing frame (2A) of establishing with right bonding pad (33) spiral shell and to rotate to when secondary bracing frame (2B) with another corresponding limit is 180 degree, this spring (37) is subjected to chamfered edge plane (313) influence on guide bar (31) surface, and under unresisted situation, automatically rebound backward, and drive handle base (35) springs into toward in, make the projection (351) at these two ends just in time be arranged in respectively in two otch (334) of right bonding pad (33), and reach left, right bonding pad (32) (33) is 180 degree and launches fixing action, moreover be exactly on pair ladder (2) work that main ladder (1) is gone up, the action of following lifting, its operation is implemented as above-mentioned positioning adjustment device (4) moves identical, so do not repeat them here, embodiment sees also shown in Figure 7.

By structure that above embodiment disclosed as can be known, positioning adjustment device of the utility model and exchanging shaft device, really can make general working stand do highly flexible and convert ladder to use, two kinds of effects roll into one, and are easy to use and increased the utilization rate of ladder.

Claims (1)

1, a kind of multifunctional working ladder is characterized in that this working stand includes main members such as main ladder, secondary ladder, exchanging shaft device and positioning adjustment device;

One main ladder becomes corresponding institute to form by forward and backward main backstop respectively; Should being by one respectively by preceding main backstop | two of the left and right main support columns of word shape become the corresponding setting in the left and right sides, and left and right main support column then is the corresponding left and right framework of ㄈ shape by two respectively and forms, edge tail is established protruding grain on the framework of a left side, and following edge tail is established concave arc, edge tail is established concave arc on the left framework in addition, and edge tail is established protruding grain down, and the two mat concaveconvex structure forms a track, and can piece together one mutually, and constitute a ducted body in the centre; Moreover left and right main support column become corresponding within side surface be provided with the quantity hole that is equidistant, place the cover endless tube that is hollow form in the hole; This cover endless tube end-rings is established flange, with the engaging hole, and establish screw and cooperate the two ends of main spreader to be arranged in left and right main brace post respectively in the cover endless tube, and mat screw and nut passes the screw that overlaps endless tube and main spreader in regular turn and fixes it; The element structure and the compound mode of back main backstop are identical with the combining structure of preceding main backstop in addition;

One secondary ladder is to put up corresponding institute by forward and backward secondary support respectively to form, and secondary bracing frame is by one respectively before this Two of the left and right secondary support columns of shape become〉＜the corresponding setting of type, and side surface is equipped with groove within the left and right secondary support column; Moreover end surfaces is provided with equidistant quantity screw before the left and right secondary support column, and the matching pair spreader is across on this left and right secondary support column, and the mat stator is fixed on it; The element structure and the compound mode of this secondary bracing frame in back are identical with the combining structure of preceding secondary main backstop;

One exchanging shaft device is that spiral shell is located at the top of forward and backward main backstop respectively; It includes critical elements such as guide bar, left and right bonding pad, rotating shaft and handle base;

Guide bar is a body of rod shape, and its end is established flange, and establishes chase apart from flange inner surface ring, and establishes two apart from the chase inner surface and be corresponding chamfered edge plane, establishes through hole in plane inner surface appropriate location again, and this guide bar surface is equipped with spring;

Left side bonding pad, groove is established at its edge, and the surface is equipped with the cavity, and is connected with otch at empty appropriate location, establishes two small holes in empty appropriate location again;

Right bonding pad, pivot closes in the groove of left bonding pad, and its bonding pad position, surface engagement left side is equipped with that the cavity is connected with otch and appropriate location is established two rectangular openings, and this rectangular opening also is connected with otch and becomes corresponding setting with the otch of another rectangular opening;

Rotating shaft is installed in the cavity of left and right bonding pad, wears through hole in it, and running through guide bar, and the surface is provided with prominent grain, and establishes bead in the rotating shaft end, and flange surface wears notch, to run through inserted sheet is set;

Handle base, its two are respectively set up separately projection, and are equipped with shrinkage pool in the inner surface centre, and the handle base side establishes small holes, and after above-mentioned each elements combination of exchanging shaft device, the mat latch runs through the through hole of small holes and guide bar in regular turn to be fixed up again;

Positioning adjustment device is to be installed in respectively in the secondary spreader of each both sides of secondary bracing frame of secondary ladder, and its position fixing knob appropriate location is provided with fixed bar and motion bar; This fixed bar is equipped with clamping block, spring, the packing ring of tool screw in regular turn, and cooperate one can pass the screw of stator and spiral shell is solid in the screw of clamping block, and can be arranged in the secondary spreader of secondary ladder, and motion bar then is placed through the aperture of secondary ladder in regular turn respectively and leads in the main spreader of ladder.

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