CN209838256U - Telescopic double ladder - Google Patents
Telescopic double ladder Download PDFInfo
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- CN209838256U CN209838256U CN201822103925.5U CN201822103925U CN209838256U CN 209838256 U CN209838256 U CN 209838256U CN 201822103925 U CN201822103925 U CN 201822103925U CN 209838256 U CN209838256 U CN 209838256U
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Abstract
The utility model provides a telescopic herringbone ladder, a first main supporting leg and a second main supporting leg are arranged in parallel, and a plurality of steps are arranged between the first main supporting leg and the second main supporting leg; the third main supporting leg and the fourth main supporting leg are arranged in parallel, and a plurality of steps are arranged between the third main supporting leg and the fourth main supporting leg; the first bearing component and the second bearing component are hinged with each other; the first auxiliary supporting leg is telescopically sleeved outside the lower end of the first main supporting leg, the second auxiliary supporting leg is telescopically sleeved outside the lower end of the second main supporting leg, the third auxiliary supporting leg is telescopically sleeved outside the lower end of the third main supporting leg, and the fourth auxiliary supporting leg is telescopically sleeved outside the lower end of the fourth main supporting leg. The utility model provides a telescopic double ladder not only has the folding function of traditional double ladder, still has the flexible function that traditional double ladder did not possess, can conveniently reduce the volume of double ladder, is convenient for deposit and operate more.
Description
Technical Field
The utility model relates to a daily instrument technical field relates to a telescopic double ladder, especially relates to a telescopic double ladder suitable for interior decoration job site.
Background
In the process of interior decoration, operating personnel need to use the double ladder to carry out the operation off the ground many times. The herringbone ladder does not need to be fixed through a wall, but is directly erected on the ground, so that the herringbone ladder is relatively wide in application scene and is not limited to a place close to the wall. The specific use method of the herringbone ladder comprises the following steps: after the herringbone ladder is moved to a specific place, the herringbone ladder is unfolded and fixed, and an operator can reach a certain height along the ladder steps, so that the off-ground operation is carried out.
In order for the operator to work off the ground, the length of the trestle ladders is generally between 1.2m and 1.8m, whereas in the prior art, the trestle ladders are generally collapsible and not telescopic. Because the herringbone ladder in the prior art is not telescopic, the length of the herringbone ladder is not changed no matter in a working state or an idle state, and great troubles are brought to the storage and the operation of the herringbone ladder.
Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a telescopic double ladder, not only have the folding function of traditional double ladder, still have the flexible function that traditional double ladder did not possess, can conveniently reduce the volume of double ladder, be convenient for deposit and operate more.
The utility model provides a technical scheme that technical problem adopted as follows:
a telescopic herringbone ladder comprises a first bearing component, a second bearing component, a first main supporting leg, a second main supporting leg, a third main supporting leg and a fourth main supporting leg;
the first main supporting leg and the second main supporting leg are arranged in parallel, the first bearing assembly is arranged at the top of the first main supporting leg and the second main supporting leg, and a plurality of steps are arranged between the first main supporting leg and the second main supporting leg;
the third main supporting leg and the fourth main supporting leg are arranged in parallel, the second bearing assembly is arranged at the top of the third main supporting leg and the fourth main supporting leg, and a plurality of steps are arranged between the third main supporting leg and the fourth main supporting leg;
the first bearing assembly and the second bearing assembly are hinged with each other;
the auxiliary support device also comprises a first auxiliary support leg, a second auxiliary support leg, a third auxiliary support leg and a fourth auxiliary support leg;
first auxiliary supporting legs telescopically overlap the outside of first main tributary dagger lower extreme, second auxiliary supporting legs telescopically overlaps the outside of second main tributary dagger lower extreme, third auxiliary supporting legs telescopically overlaps the outside of third main tributary dagger lower extreme, fourth auxiliary supporting legs telescopically overlaps the outside of fourth main tributary dagger lower extreme.
Compared with the prior art, the beneficial effects of the technical scheme are that: when the herringbone ladder is in a working state, the first auxiliary supporting leg extends out of the lower end of the first main supporting leg, the second auxiliary supporting leg extends out of the lower end of the second main supporting leg, the third auxiliary supporting leg extends out of the lower end of the third main supporting leg, and the fourth auxiliary supporting leg extends out of the lower end of the fourth main supporting leg; when the herringbone ladder is in an idle state, the first auxiliary supporting leg is retracted into the first main supporting leg, the second auxiliary supporting leg is retracted into the second main supporting leg, the third auxiliary supporting leg is retracted into the third main supporting leg, and the fourth auxiliary supporting leg is retracted into the fourth main supporting leg. Therefore, make the utility model provides a telescopic double ladder not only has the folding function of traditional double ladder, still has the flexible function that traditional double ladder did not possess, can conveniently reduce the volume of double ladder, is convenient for deposit and operate more.
Further, the lock also comprises a locking bolt;
the first main supporting leg, the second main supporting leg, the third main supporting leg, the fourth main supporting leg, the first auxiliary supporting leg, the second auxiliary supporting leg, the third auxiliary supporting leg and the fourth auxiliary supporting leg are all tubular structures;
a first U-shaped elastic sheet is arranged at the bottom of the first main supporting leg, one end of the first U-shaped elastic sheet is fixedly arranged on the inner wall of the first main supporting leg, and an adjusting bolt is arranged at the other end of the first U-shaped elastic sheet and extends out of a bolt hole in the first main supporting leg; the bottom of the first main supporting leg is also provided with a pair of symmetrical supporting through holes, and one of the supporting through holes is arranged below the bolt hole;
the first auxiliary supporting leg is provided with a plurality of pairs of mutually symmetrical adjusting through holes along the length direction;
when the adjusting bolt penetrates through the bolt hole and abuts against the inner wall of the first auxiliary supporting leg, the first auxiliary supporting leg is in a telescopic state; when the adjusting bolt penetrates through the bolt hole and is embedded into the adjusting through hole, and the locking bolt penetrates through the pair of adjusting through holes and the pair of supporting through holes, the first auxiliary supporting leg is in a fixed state.
Furthermore, a second U-shaped elastic sheet is arranged at the bottom of the second main supporting leg, one end of the second U-shaped elastic sheet is fixedly arranged on the inner wall of the second main supporting leg, and an adjusting bolt is arranged at the other end of the second U-shaped elastic sheet and extends out of a bolt hole in the second main supporting leg; the bottom of the second main supporting leg is also provided with a pair of symmetrical supporting through holes, and one of the supporting through holes is arranged below the bolt hole;
the second auxiliary supporting leg is provided with a plurality of pairs of mutually symmetrical adjusting through holes along the length direction;
when the adjusting bolt penetrates through the bolt hole and abuts against the inner wall of the second auxiliary supporting leg on the second main supporting leg and the second auxiliary supporting leg, the second auxiliary supporting leg is in a telescopic state; when the adjusting bolt penetrates through the bolt hole and is embedded into the adjusting through hole, and the locking bolt penetrates through the pair of adjusting through holes and the pair of supporting through holes, the second auxiliary supporting leg is in a fixed state.
Furthermore, a third U-shaped elastic sheet is arranged at the bottom of the third main supporting leg, one end of the third U-shaped elastic sheet is fixedly arranged on the inner wall of the third main supporting leg, and an adjusting bolt is arranged at the other end of the third U-shaped elastic sheet and extends out of a bolt hole in the third main supporting leg; the bottom of the third main supporting leg is also provided with a pair of mutually symmetrical supporting through holes, and one of the supporting through holes is arranged below the bolt hole;
the third auxiliary supporting leg is provided with a plurality of pairs of mutually symmetrical adjusting through holes along the length direction;
when the adjusting bolt penetrates through the bolt hole and abuts against the inner wall of the third auxiliary supporting leg on the third main supporting leg and the third auxiliary supporting leg, the third auxiliary supporting leg is in a telescopic state; when the adjusting bolt penetrates through the bolt hole and is embedded into the adjusting through hole, and the locking bolt penetrates through the pair of adjusting through holes and the pair of supporting through holes, the third auxiliary supporting leg is in a fixed state.
Furthermore, a fourth U-shaped elastic sheet is arranged at the bottom of the fourth main supporting leg, one end of the fourth U-shaped elastic sheet is fixedly arranged on the inner wall of the fourth main supporting leg, and an adjusting bolt is arranged at the other end of the fourth U-shaped elastic sheet and extends out of a bolt hole in the fourth main supporting leg; the bottom of the fourth main supporting leg is also provided with a pair of mutually symmetrical supporting through holes, and one of the supporting through holes is arranged below the bolt hole;
the fourth auxiliary supporting leg is provided with a plurality of pairs of mutually symmetrical adjusting through holes along the length direction;
when the adjusting bolt penetrates through the bolt hole and abuts against the inner wall of the fourth auxiliary supporting leg on the fourth main supporting leg and the fourth auxiliary supporting leg, the fourth auxiliary supporting leg is in a telescopic state; when the adjusting bolt penetrates through the bolt hole and is embedded into the adjusting through hole, and the locking bolt penetrates through the pair of adjusting through holes and the pair of supporting through holes, the fourth auxiliary supporting leg is in a fixed state.
The beneficial effect who adopts above-mentioned scheme is: the function of adjusting the extension can be realized through the first U-shaped elastic sheet, the second U-shaped elastic sheet, the third U-shaped elastic sheet and the fourth U-shaped elastic sheet; when the height is adjusted to the required height, the locking bolt passes through the pair of adjusting through holes and the pair of supporting through holes, and the fixing effect can be achieved.
Furthermore, an accommodating cavity for placing the locking bolt is formed in the lower surface of the first bearing component or the second bearing component;
a normally closed cover is arranged on the accommodating cavity; the edge of the accommodating cavity is provided with a first mounting lug and a second mounting lug, and the edge of the normally closed cover is provided with a third mounting lug and a fourth mounting lug;
the third mounting lug and the fourth mounting lug are nested between the first mounting lug and the second mounting lug, the first mounting lug, the second mounting lug, the third mounting lug and the fourth mounting lug are coaxially arranged, a rotating shaft penetrates through the first mounting lug, the second mounting lug, the third mounting lug and the fourth mounting lug, a torsion spring is sleeved on the rotating shaft, and a first outer convex end and a second outer convex end are respectively arranged at two ends of the torsion spring;
the torsion spring is arranged between the third mounting lug and the fourth mounting lug, the first outer convex end is fixed on the edge of the accommodating cavity, and the second outer convex end is fixed on the normally closed cover.
The beneficial effect who adopts above-mentioned scheme is: on one hand, the accommodating cavity is used for accommodating the locking bolt, and when the herringbone ladder is in an idle state, the locking bolt can be placed in the accommodating cavity, so that the locking bolt can be conveniently used next time while being prevented from being lost; on the other hand, the accommodating cavity is formed in the lower surface of the first bearing assembly or the lower surface of the second bearing assembly, so that the flatness of the upper surfaces of the first bearing assembly and the second bearing assembly is guaranteed, and operators are prevented from being scratched in the using process. And the normally closed cover is used for accommodating the locking bolt in the accommodating cavity, so that the locking bolt is prevented from falling off, and meanwhile, the locking bolt is convenient for operators to take and place.
Further, a recessed portion is arranged around the adjusting through hole.
The beneficial effect who adopts above-mentioned scheme is: because first auxiliary supporting legs, second auxiliary supporting legs, third auxiliary supporting legs and fourth auxiliary supporting legs all have certain thickness, and because the existence of this thickness, press the regulation bolt to a certain extent and caused the trouble, consequently, be provided with the depressed part around adjusting the through-hole and can offset the influence that thickness brought to the operation, be convenient for operate the double ladder more.
Furthermore, reinforcing ribs are arranged on the inner walls of the first main supporting leg, the second main supporting leg, the third main supporting leg and the fourth main supporting leg along the length direction; and reinforcing ribs are arranged on the outer walls of the first auxiliary supporting leg, the second auxiliary supporting leg, the third auxiliary supporting leg and the fourth auxiliary supporting leg along the length direction.
The beneficial effect who adopts above-mentioned scheme is: the reinforcing ribs arranged along the length direction have the functions similar to keels in buildings, and can greatly improve the strength of the first main supporting leg, the second main supporting leg, the third main supporting leg, the fourth main supporting leg, the first auxiliary supporting leg, the second auxiliary supporting leg, the third auxiliary supporting leg and the fourth auxiliary supporting leg; because the first auxiliary supporting leg is sleeved outside the first main supporting leg, the second auxiliary supporting leg is sleeved outside the second main supporting leg, the third auxiliary supporting leg is sleeved outside the third main supporting leg, and the fourth auxiliary supporting leg is sleeved outside the fourth main supporting leg, the reinforcing ribs on the first main supporting leg, the second main supporting leg, the third main supporting leg and the fourth main supporting leg are arranged on the inner walls of the first main supporting leg, the second auxiliary supporting leg, the third auxiliary supporting leg and the fourth auxiliary supporting leg are arranged on the outer walls of the first auxiliary supporting leg, the second auxiliary supporting leg, the third auxiliary supporting leg and the fourth auxiliary supporting leg, two pairs of reinforcing ribs are more convenient to match, and the first auxiliary supporting leg, the second auxiliary.
Further, the first main supporting leg, the second main supporting leg, the third main supporting leg, the fourth main supporting leg, the first auxiliary supporting leg, the second auxiliary supporting leg, the third auxiliary supporting leg and the fourth auxiliary supporting leg are made of aluminum alloy.
The beneficial effect who adopts above-mentioned scheme is: the aluminum alloy has the characteristics of light weight, high strength and easiness in processing, can reduce the weight and improve the strength by adopting the aluminum alloy as the material of the herringbone ladder, and has the advantage of low processing cost.
Further, the lengths of the first main supporting leg, the second main supporting leg, the third main supporting leg, the fourth main supporting leg, the first auxiliary supporting leg, the second auxiliary supporting leg, the third auxiliary supporting leg and the fourth auxiliary supporting leg are between 0.6m and 1.0 m.
The beneficial effect who adopts above-mentioned scheme is: the lengths of the first main supporting leg, the second main supporting leg, the third main supporting leg, the fourth main supporting leg, the first auxiliary supporting leg, the second auxiliary supporting leg, the third auxiliary supporting leg and the fourth auxiliary supporting leg are controlled to be 0.6-1.0 m, so that on one hand, most application environments can be met, and on the other hand, the size of the herringbone ladder cannot be too large, and the herringbone ladder is convenient to store and operate.
Drawings
Fig. 1 is a schematic view of the telescopic herringbone ladder of the present invention.
Fig. 2 is a schematic view of the first main supporting leg and the first auxiliary supporting leg in the telescopic herringbone ladder of the present invention.
Fig. 3 is a schematic view of the first U-shaped elastic piece in the telescopic herringbone ladder of the present invention.
Fig. 4 is a bottom view of the first bearing assembly in the telescopic herringbone ladder of the present invention.
Fig. 5 is a schematic view of the normally closed cover in the telescopic herringbone ladder of the present invention.
Fig. 6 is a schematic view of the concave portion of the telescopic herringbone ladder of the present invention.
Fig. 7 is a sectional view of the concave portion of the telescopic herringbone ladder of the present invention.
Fig. 8 is a schematic view of the reinforcing rib on the first main supporting leg of the telescopic herringbone ladder of the present invention.
Fig. 9 is a schematic view of the reinforcing rib on the first auxiliary supporting leg in the telescopic herringbone ladder of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a telescopic herringbone ladder comprises a first bearing component 1, a second bearing component 2, a first main supporting leg 3, a second main supporting leg 4, a third main supporting leg 5 and a fourth main supporting leg 6.
The first main supporting leg 3 and the second main supporting leg 4 are arranged side by side, the first bearing component 1 is arranged on the top of the first main supporting leg 3 and the second main supporting leg 4, and a plurality of steps 7 are arranged between the first main supporting leg 3 and the second main supporting leg 4.
The third main supporting leg 5 and the fourth main supporting leg 6 are arranged side by side, the second bearing component 2 is arranged on the top of the third main supporting leg 5 and the fourth main supporting leg 6, and a plurality of steps 7 are arranged between the third main supporting leg 5 and the fourth main supporting leg 6.
The above structure is similar to the herringbone ladder in the prior art. The first bearing component 1 and the second bearing component 2 which are hinged with each other play a bearing role, so that an operator can conveniently sit or step on the chair; the first main supporting leg 3, the second main supporting leg 4, the third main supporting leg 5 and the fourth main supporting leg 6 play a role in supporting and heightening.
Different from the prior art, the utility model discloses an among the telescopic double ladder, still include first auxiliary supporting legs 31, second auxiliary supporting legs 41, third auxiliary supporting legs 51 and fourth auxiliary supporting legs 61. Wherein, first auxiliary supporting legs 31 telescopically overlaps and is established the outside of 3 lower extremes of first main supporting legs, second auxiliary supporting legs 41 telescopically overlaps and is established the outside of 4 lower extremes of second main supporting legs, third auxiliary supporting legs 51 telescopically overlaps and is established the outside of 5 lower extremes of third main supporting legs, fourth auxiliary supporting legs 61 telescopically overlaps and is established the outside of 6 lower extremes of fourth main supporting legs.
When the herringbone ladder needs to be used, an operator extends the first auxiliary supporting foot 31 from the lower end of the first main supporting foot 3, the second auxiliary supporting foot 41 from the lower end of the second main supporting foot 4, the third auxiliary supporting foot 51 from the lower end of the third main supporting foot 5, and the fourth auxiliary supporting foot 61 from the lower end of the fourth main supporting foot 6, so that the height of the herringbone ladder can be further increased; after the use of the double ladder, the operator retracts the first auxiliary supporting leg 31 into the first main supporting leg 3, retracts the second auxiliary supporting leg 41 into the second main supporting leg 4, retracts the third auxiliary supporting leg 51 into the third main supporting leg 5, retracts the fourth auxiliary supporting leg 61 into the fourth main supporting leg 6, and then folds the double ladder by the first bearing assembly 1 and the second bearing assembly 2 which are hinged with each other. Therefore, make the utility model provides a telescopic double ladder not only has the folding function of traditional double ladder, still has the flexible function that traditional double ladder did not possess, can conveniently reduce the volume of double ladder, is convenient for deposit and operate more.
Preferably, in order to realize scalable function, the utility model provides a telescopic double ladder still includes locking bolt, and locking bolt's effect lies in playing the fixed action.
The utility model discloses in, first main tributary supporting legs 3 second main tributary supporting legs 4 third main tributary supporting legs 5 fourth main tributary supporting legs 6 first auxiliary supporting legs 31 the second auxiliary supporting legs 41 third auxiliary supporting legs 51 with fourth auxiliary supporting legs 61 is the tubular structure.
As shown in fig. 2 and 3, a first U-shaped elastic sheet 311 is disposed at the bottom of the first main supporting leg 3, one end of the first U-shaped elastic sheet 311 is fixedly disposed on the inner wall of the first main supporting leg 3, an adjusting bolt 312 is disposed at the other end of the first U-shaped elastic sheet 311, and the adjusting bolt 312 extends out of a bolt hole of the first main supporting leg 3; the bottom of the first main supporting leg 3 is further provided with a pair of supporting through holes 313 which are symmetrical to each other, wherein one of the supporting through holes 313 is arranged below the pin hole. The first auxiliary supporting leg 31 is provided with a plurality of pairs of mutually symmetrical adjusting through holes 314 along the length direction.
The first auxiliary supporting leg is taken as an example to explain the meanings of mutual symmetry. The first auxiliary supporting leg is provided with a plurality of pairs of mutually symmetrical adjusting through holes along the length direction, namely two rows of adjusting through holes are arranged on the first auxiliary supporting leg, and the two rows of adjusting through holes are symmetrical relative to the central line of the first auxiliary supporting leg.
On the first main supporting leg 3 and the first auxiliary supporting leg 31, when the adjusting bolt 312 passes through the bolt hole and abuts on the inner wall of the first auxiliary supporting leg 31, the first auxiliary supporting leg 31 is in a telescopic state; when the adjusting bolt 312 passes through the bolt hole and is inserted into the adjusting through hole 314, and the locking bolt passes through a pair of adjusting through holes 314 and a pair of support through holes 313, the first auxiliary support leg 31 is in a fixed state.
An operator presses the adjusting bolt 312, retracts the adjusting bolt 312 against the elastic force, and then abuts against the inner wall of the first main supporting leg 3, so that the operator can adjust the matching length of the first main supporting leg 3 and the first auxiliary supporting leg 31 according to the requirement; when the adjusting bolt 312 is inserted into the supporting through-hole 313 and the adjusting through-hole 314 in turn and passes through the pair of adjusting through-holes 314 and the pair of supporting through-holes 313 by the locking bolt, the fitting length of the first main supporting leg 3 and the first auxiliary supporting leg 31 can be fixed.
A plurality of pairs of mutually symmetrical adjusting through holes 314 are formed in the first auxiliary supporting leg 31 along the length direction, and the height of the herringbone ladder can be adjusted through the adjusting through holes 314 at different positions.
The locking bolt is used for penetrating the first main supporting leg 3 and the first auxiliary supporting leg 31 and fixing the two. When an operator gets on the herringbone ladder, the weight of the operator can be loaded on the herringbone ladder, and at the moment, if the operator only needs to stretch into the supporting through hole 313 by the adjusting bolt 312 for fixing, the operator cannot bear excessive weight for a long time; and because the locking bolt passes through the first main supporting leg 3 and the first auxiliary supporting leg 31, the locking bolt can enable the first main supporting leg 3 and the first auxiliary supporting leg 31 to be fixedly connected together, so that the bearing capacity of the herringbone ladder can be greatly improved. The utility model discloses in, make first main tributary supporting legs 3 and the mutual fixed connection back of first auxiliary supporting legs 31 through lock pin, telescopic double ladder's bearing weight can reach 120 KG.
It should be noted that, as shown in fig. 2, on the first main supporting leg 3, the distance between the pin hole and one of the supporting through holes 313 is L; and on the first auxiliary supporting leg 31, the distance between the adjacent adjusting through holes 314 is also L. Therefore, when the adjusting pin 312 is inserted into one of the adjusting through holes 314, the positions of the supporting through holes 313 are overlapped with the positions of the next pair of adjusting through holes 314. At this time, only the locking bolt needs to be penetrated, and fixation can be realized.
A second U-shaped elastic sheet is arranged at the bottom of the second main supporting leg, one end of the second U-shaped elastic sheet is fixedly arranged on the inner wall of the second main supporting leg, and an adjusting bolt is arranged at the other end of the second U-shaped elastic sheet and extends out of a bolt hole in the second main supporting leg; the bottom of the second main supporting leg is also provided with a pair of supporting through holes which are symmetrical to each other, and one of the supporting through holes is arranged below the bolt hole. And a plurality of pairs of mutually symmetrical adjusting through holes are formed in the second auxiliary supporting leg along the length direction.
When the adjusting bolt penetrates through the bolt hole and abuts against the inner wall of the second auxiliary supporting leg on the second main supporting leg and the second auxiliary supporting leg, the second auxiliary supporting leg is in a telescopic state; when the adjusting bolt penetrates through the bolt hole and is embedded into the adjusting through hole, and the locking bolt penetrates through the pair of adjusting through holes and the pair of supporting through holes, the second auxiliary supporting leg is in a fixed state.
A third U-shaped elastic sheet is arranged at the bottom of the third main supporting leg, one end of the third U-shaped elastic sheet is fixedly arranged on the inner wall of the third main supporting leg, and an adjusting bolt is arranged at the other end of the third U-shaped elastic sheet and extends out of a bolt hole in the third main supporting leg; the bottom of the third main supporting leg is also provided with a pair of supporting through holes which are symmetrical to each other, and one of the supporting through holes is arranged below the bolt hole. And a plurality of pairs of symmetrical adjusting through holes are formed in the third auxiliary supporting leg along the length direction.
When the adjusting bolt penetrates through the bolt hole and abuts against the inner wall of the third auxiliary supporting leg on the third main supporting leg and the third auxiliary supporting leg, the third auxiliary supporting leg is in a telescopic state; when the adjusting bolt penetrates through the bolt hole and is embedded into the adjusting through hole, and the locking bolt penetrates through the pair of adjusting through holes and the pair of supporting through holes, the third auxiliary supporting leg is in a fixed state.
A fourth U-shaped elastic sheet is arranged at the bottom of the fourth main supporting leg, one end of the fourth U-shaped elastic sheet is fixedly arranged on the inner wall of the fourth main supporting leg, and an adjusting bolt is arranged at the other end of the fourth U-shaped elastic sheet and extends out of a bolt hole in the fourth main supporting leg; the bottom of the fourth main supporting leg is also provided with a pair of supporting through holes which are symmetrical to each other, and one of the supporting through holes is arranged below the bolt hole. And a plurality of pairs of symmetrical adjusting through holes are formed in the fourth auxiliary supporting leg along the length direction.
When the adjusting bolt penetrates through the bolt hole and abuts against the inner wall of the fourth auxiliary supporting leg on the fourth main supporting leg and the fourth auxiliary supporting leg, the fourth auxiliary supporting leg is in a telescopic state; when the adjusting bolt penetrates through the bolt hole and is embedded into the adjusting through hole, and the locking bolt penetrates through the pair of adjusting through holes and the pair of supporting through holes, the fourth auxiliary supporting leg is in a fixed state.
The structure between the first main support leg 3 and the first auxiliary support leg 31 is the same as the structure between the second main support leg 4 and the second auxiliary support leg 41, the structure between the third main support leg 5 and the third auxiliary support leg 51, and the structure between the fourth main support leg 6 and the fourth auxiliary support leg 61, and therefore, the following description of the groups is omitted.
As shown in fig. 4, preferably, a receiving cavity 8 for placing the dead bolt is opened on a lower surface of the first bearing component 1 or the second bearing component. The first bearing component 1 is provided with a receiving cavity 8 for placing the locking bolt on the lower surface.
On one hand, the accommodating cavity 8 is used for accommodating the locking bolt, and when the herringbone ladder is in an idle state, the locking bolt can be placed in the accommodating cavity 8, so that the locking bolt is prevented from being lost and can be conveniently used next time; on the other hand, the accommodating cavity 8 is arranged on the lower surface of the first bearing component 1 or the lower surface of the second bearing component 2, so that the flatness of the upper surfaces of the first bearing component 1 and the second bearing component 2 is ensured, and the operator is prevented from being scratched in the using process.
As shown in fig. 5, a normally closed cover 9 is arranged on the accommodating cavity 8; the edge of the accommodating cavity 8 is provided with a first mounting lug 91 and a second mounting lug 92, and the edge of the normally closed cover 9 is provided with a third mounting lug 93 and a fourth mounting lug 94.
The third installation ear 93 with fourth installation ear 94 nests in first installation ear 91 with between the second installation ear 92, first installation ear 91 the second installation ear 92 the third installation ear 93 with the coaxial setting of fourth installation ear 94, first installation ear 91 the second installation ear 92 the third installation ear 93 with wear to be equipped with the rotation axis between the fourth installation ear 94, the cover is equipped with a torsional spring 95 on the rotation axis, the both ends of torsional spring 95 are provided with first epirelief end 951 and second epirelief end 952 respectively.
The torsion spring 95 is disposed between the third mounting ear 93 and the fourth mounting ear 94, the first convex end 951 is fixed on the edge of the accommodating cavity 8, and the second convex end 952 is fixed on the normally closed cover 9.
The working principle of the normally closed cover 9 is as follows: when the normally closed cover 9 is in the closed state, the torsion spring 95 is in a natural state; when the normally closed cover 9 is driven by external force to open, along with the opening of the normally closed cover 9, the torsion spring 95 is in a compression state because the first convex end 951 of the torsion spring 95 is fixed on the edge of the accommodating cavity 8 and the second convex end 952 is fixed on the normally closed cover 9, and at this time, as long as the external force applied to the normally closed cover 9 disappears, the torsion spring 95 drives the normally closed cover 9 to automatically close.
In the utility model, the locking bolt is a long bar independent of the herringbone ladder, and only when the herringbone ladder is in a use state, the locking bolt can pass through the pair of adjusting through holes 314 and the pair of supporting through holes 313; when the herringbone ladder is in an idle state, the herringbone ladder needs to be placed in other places for storage, and the herringbone ladder is prevented from being lost. Therefore, the locking bolt can be accommodated in the accommodating cavity 8 through the normally closed cover 9, the locking bolt is prevented from falling off, and meanwhile, the locking bolt is convenient for an operator to take and place.
As shown in fig. 6 and 7, a recess 3141 is preferably formed around the adjusting through hole 314. Because first auxiliary supporting legs, second auxiliary supporting legs, third auxiliary supporting legs and fourth auxiliary supporting legs all have certain thickness, and because the existence of this thickness, press down the regulation bolt to a certain extent and caused the trouble to operating personnel. Therefore, the recessed portion 3141 is arranged around the adjusting through hole 314 to offset the influence of the thickness on the operation, and the herringbone ladder is more convenient to operate.
As shown in fig. 8, it is preferable that reinforcing ribs 315 are provided on inner walls of the first main supporting leg 3, the second main supporting leg, the third main supporting leg, and the fourth main supporting leg along a length direction.
As shown in fig. 9, it is preferable that reinforcing ribs 315 are provided on outer walls of the first auxiliary supporting leg 31, the second auxiliary supporting leg, the third auxiliary supporting leg, and the fourth auxiliary supporting leg along a length direction.
The reinforcing ribs 315 arranged along the length direction have the functions similar to those of keels in buildings, and can greatly improve the strength of the first main supporting leg 3, the second main supporting leg 4, the third main supporting leg 5, the fourth main supporting leg 6, the first auxiliary supporting leg 31, the second auxiliary supporting leg 41, the third auxiliary supporting leg 51 and the fourth auxiliary supporting leg 61; because the first auxiliary supporting leg 31 is sleeved outside the first main supporting leg 3, the second auxiliary supporting leg 41 is sleeved outside the second main supporting leg 4, the third auxiliary supporting leg 51 is sleeved outside the third main supporting leg 5, and the fourth auxiliary supporting leg 61 is sleeved outside the fourth main supporting leg 6, the reinforcing ribs 315 on the first main supporting leg 3, the second main supporting leg 4, the third main supporting leg 5, and the fourth main supporting leg 6 are arranged on the inner wall thereof, and the reinforcing ribs 315 on the first auxiliary supporting leg 31, the second auxiliary supporting leg 41, the third auxiliary supporting leg 51, and the fourth auxiliary supporting leg 61 are arranged on the outer wall thereof, thereby being more convenient for matching two by two and being sleeved together.
Preferably, the first main supporting leg 3, the second main supporting leg 4, the third main supporting leg 5, the fourth main supporting leg 6, the first auxiliary supporting leg 31, the second auxiliary supporting leg 41, the third auxiliary supporting leg 51 and the fourth auxiliary supporting leg 61 are made of aluminum alloy. The aluminum alloy has the characteristics of light weight, high strength and easiness in processing, can reduce the weight and improve the strength by adopting the aluminum alloy as the material of the herringbone ladder, and has the advantage of low processing cost.
In the present invention, the length of the first main supporting leg 3, the second main supporting leg 4, the third main supporting leg 5, the fourth main supporting leg 6, the first auxiliary supporting leg 31, the second auxiliary supporting leg 41, the third auxiliary supporting leg 51 and the fourth auxiliary supporting leg 61 is between 0.6m and 1.0 m. Specifically, the lengths of the first main supporting leg 3, the second main supporting leg 4, the third main supporting leg 5, the fourth main supporting leg 6, the first auxiliary supporting leg 31, the second auxiliary supporting leg 41, the third auxiliary supporting leg 51 and the fourth auxiliary supporting leg 61 are 0.8 m.
The height of a fixed floor of a modern building determines the height of a herringbone ladder to a certain extent, and the height of the herringbone ladder widely applied in the prior art is generally 1.2m or 1.5m or 1.8 m. The utility model provides a double ladder is the telescopic, consequently, first main tributary supporting legs 3, second main tributary supporting legs 4, third main tributary supporting legs 5, fourth main tributary supporting legs 6, first auxiliary supporting legs 31, second auxiliary supporting legs 41, third auxiliary supporting legs 51 and fourth auxiliary supporting legs 61's length control is between 0.6m-1.0m, can satisfy the application environment of majority on the one hand, and on the other hand can make double ladder's size can not be too big again, is convenient for deposit and operates.
Preferably, the first auxiliary supporting leg 31, the second auxiliary supporting leg 41, the third auxiliary supporting leg 51 and the fourth auxiliary supporting leg 61 are provided with anti-skidding foot sleeves at their bottoms. Specifically, the anti-skidding foot sleeves are rubber sleeves. The rubber sleeve is used as the anti-slip foot sleeve, on one hand, the rubber can be tightly attached to the floor, and the herringbone ladder is prevented from sliding when in use; on the other hand, the rubber has the characteristic of being soft, and the first auxiliary supporting leg 31, the second auxiliary supporting leg 41, the third auxiliary supporting leg 51 and the fourth auxiliary supporting leg 61 can be prevented from scratching the floor.
In summary, the utility model provides a telescopic herringbone ladder, which comprises a first bearing component 1, a second bearing component 2, a first main supporting leg 3, a second main supporting leg 4, a third main supporting leg 5 and a fourth main supporting leg 6; the first main supporting leg 3 and the second main supporting leg 4 are arranged side by side, the first bearing assembly 1 is arranged on the top of the first main supporting leg 3 and the second main supporting leg 4, and a plurality of steps 7 are arranged between the first main supporting leg 3 and the second main supporting leg 4; the third main supporting leg 5 and the fourth main supporting leg 6 are arranged side by side, the second bearing assembly 2 is arranged on the top of the third main supporting leg 5 and the fourth main supporting leg 6, and a plurality of steps 7 are arranged between the third main supporting leg 5 and the fourth main supporting leg 6; the first bearing component 1 and the second bearing component 2 are hinged with each other; the auxiliary support also comprises a first auxiliary support foot 31, a second auxiliary support foot 41, a third auxiliary support foot 51 and a fourth auxiliary support foot 61; first auxiliary supporting legs 31 telescopically overlap the outside of 3 lower extremes of first main supporting legs, second auxiliary supporting legs 41 telescopically overlap the outside of 4 lower extremes of second main supporting legs, third auxiliary supporting legs 51 telescopically overlap the outside of 5 lower extremes of third main supporting legs, fourth auxiliary supporting legs 61 telescopically overlaps the outside of 6 lower extremes of fourth main supporting legs. Compared with the prior art, the beneficial effects of the technical scheme are that: when the herringbone ladder is in a working state, the first auxiliary supporting foot 31 extends from the lower end of the first main supporting foot 3, the second auxiliary supporting foot 41 extends from the lower end of the second main supporting foot 4, the third auxiliary supporting foot 51 extends from the lower end of the third main supporting foot 5, and the fourth auxiliary supporting foot 61 extends from the lower end of the fourth main supporting foot 6; when the herringbone ladder is in an idle state, the first auxiliary supporting leg 31 is retracted into the first main supporting leg 3, the second auxiliary supporting leg 41 is retracted into the second main supporting leg 4, the third auxiliary supporting leg 51 is retracted into the third main supporting leg 5, and the fourth auxiliary supporting leg 61 is retracted into the fourth main supporting leg 6. Therefore, make the utility model provides a telescopic double ladder not only has the folding function of traditional double ladder, still has the flexible function that traditional double ladder did not possess, can conveniently reduce the volume of double ladder, is convenient for deposit and operate more.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a telescopic double ladder, includes first carrier assembly, second carrier assembly, first main tributary supporting leg, second main tributary supporting leg, third main tributary supporting leg and fourth main tributary supporting leg, its characterized in that:
the first main supporting leg and the second main supporting leg are arranged in parallel, the first bearing assembly is arranged at the top of the first main supporting leg and the second main supporting leg, and a plurality of steps are arranged between the first main supporting leg and the second main supporting leg;
the third main supporting leg and the fourth main supporting leg are arranged in parallel, the second bearing assembly is arranged at the top of the third main supporting leg and the fourth main supporting leg, and a plurality of steps are arranged between the third main supporting leg and the fourth main supporting leg;
the first bearing assembly and the second bearing assembly are hinged with each other;
the auxiliary support device also comprises a first auxiliary support leg, a second auxiliary support leg, a third auxiliary support leg and a fourth auxiliary support leg;
first auxiliary supporting legs telescopically overlap the outside of first main tributary dagger lower extreme, second auxiliary supporting legs telescopically overlaps the outside of second main tributary dagger lower extreme, third auxiliary supporting legs telescopically overlaps the outside of third main tributary dagger lower extreme, fourth auxiliary supporting legs telescopically overlaps the outside of fourth main tributary dagger lower extreme.
2. The telescopic herringbone ladder of claim 1, wherein: the lock also comprises a locking bolt;
the first main supporting leg, the second main supporting leg, the third main supporting leg, the fourth main supporting leg, the first auxiliary supporting leg, the second auxiliary supporting leg, the third auxiliary supporting leg and the fourth auxiliary supporting leg are all tubular structures;
a first U-shaped elastic sheet is arranged at the bottom of the first main supporting leg, one end of the first U-shaped elastic sheet is fixedly arranged on the inner wall of the first main supporting leg, and an adjusting bolt is arranged at the other end of the first U-shaped elastic sheet and extends out of a bolt hole in the first main supporting leg; the bottom of the first main supporting leg is also provided with a pair of symmetrical supporting through holes, and one of the supporting through holes is arranged below the bolt hole;
the first auxiliary supporting leg is provided with a plurality of pairs of mutually symmetrical adjusting through holes along the length direction;
when the adjusting bolt penetrates through the bolt hole and abuts against the inner wall of the first auxiliary supporting leg, the first auxiliary supporting leg is in a telescopic state; when the adjusting bolt penetrates through the bolt hole and is embedded into the adjusting through hole, and the locking bolt penetrates through the pair of adjusting through holes and the pair of supporting through holes, the first auxiliary supporting leg is in a fixed state.
3. The telescopic herringbone ladder of claim 2, wherein: a second U-shaped elastic sheet is arranged at the bottom of the second main supporting leg, one end of the second U-shaped elastic sheet is fixedly arranged on the inner wall of the second main supporting leg, and an adjusting bolt is arranged at the other end of the second U-shaped elastic sheet and extends out of a bolt hole in the second main supporting leg; the bottom of the second main supporting leg is also provided with a pair of symmetrical supporting through holes, and one of the supporting through holes is arranged below the bolt hole;
the second auxiliary supporting leg is provided with a plurality of pairs of mutually symmetrical adjusting through holes along the length direction;
when the adjusting bolt penetrates through the bolt hole and abuts against the inner wall of the second auxiliary supporting leg on the second main supporting leg and the second auxiliary supporting leg, the second auxiliary supporting leg is in a telescopic state; when the adjusting bolt penetrates through the bolt hole and is embedded into the adjusting through hole, and the locking bolt penetrates through the pair of adjusting through holes and the pair of supporting through holes, the second auxiliary supporting leg is in a fixed state.
4. The telescopic herringbone ladder of claim 2, wherein: a third U-shaped elastic sheet is arranged at the bottom of the third main supporting leg, one end of the third U-shaped elastic sheet is fixedly arranged on the inner wall of the third main supporting leg, and an adjusting bolt is arranged at the other end of the third U-shaped elastic sheet and extends out of a bolt hole in the third main supporting leg; the bottom of the third main supporting leg is also provided with a pair of mutually symmetrical supporting through holes, and one of the supporting through holes is arranged below the bolt hole;
the third auxiliary supporting leg is provided with a plurality of pairs of mutually symmetrical adjusting through holes along the length direction;
when the adjusting bolt penetrates through the bolt hole and abuts against the inner wall of the third auxiliary supporting leg on the third main supporting leg and the third auxiliary supporting leg, the third auxiliary supporting leg is in a telescopic state; when the adjusting bolt penetrates through the bolt hole and is embedded into the adjusting through hole, and the locking bolt penetrates through the pair of adjusting through holes and the pair of supporting through holes, the third auxiliary supporting leg is in a fixed state.
5. The telescopic herringbone ladder of claim 2, wherein: a fourth U-shaped elastic sheet is arranged at the bottom of the fourth main supporting leg, one end of the fourth U-shaped elastic sheet is fixedly arranged on the inner wall of the fourth main supporting leg, and an adjusting bolt is arranged at the other end of the fourth U-shaped elastic sheet and extends out of a bolt hole in the fourth main supporting leg; the bottom of the fourth main supporting leg is also provided with a pair of mutually symmetrical supporting through holes, and one of the supporting through holes is arranged below the bolt hole;
the fourth auxiliary supporting leg is provided with a plurality of pairs of mutually symmetrical adjusting through holes along the length direction;
when the adjusting bolt penetrates through the bolt hole and abuts against the inner wall of the fourth auxiliary supporting leg on the fourth main supporting leg and the fourth auxiliary supporting leg, the fourth auxiliary supporting leg is in a telescopic state; when the adjusting bolt penetrates through the bolt hole and is embedded into the adjusting through hole, and the locking bolt penetrates through the pair of adjusting through holes and the pair of supporting through holes, the fourth auxiliary supporting leg is in a fixed state.
6. A telescopic herringbone ladder according to any one of claims 2 to 5, characterized in that: the lower surface of the first bearing component or the second bearing component is provided with an accommodating cavity for placing the locking bolt;
a normally closed cover is arranged on the accommodating cavity; the edge of the accommodating cavity is provided with a first mounting lug and a second mounting lug, and the edge of the normally closed cover is provided with a third mounting lug and a fourth mounting lug;
the third mounting lug and the fourth mounting lug are nested between the first mounting lug and the second mounting lug, the first mounting lug, the second mounting lug, the third mounting lug and the fourth mounting lug are coaxially arranged, a rotating shaft penetrates through the first mounting lug, the second mounting lug, the third mounting lug and the fourth mounting lug, a torsion spring is sleeved on the rotating shaft, and a first outer convex end and a second outer convex end are respectively arranged at two ends of the torsion spring;
the torsion spring is arranged between the third mounting lug and the fourth mounting lug, the first outer convex end is fixed on the edge of the accommodating cavity, and the second outer convex end is fixed on the normally closed cover.
7. A telescopic herringbone ladder according to any one of claims 2 to 5, characterized in that: and a concave part is arranged around the adjusting through hole.
8. The telescopic herringbone ladder of claim 1, wherein: reinforcing ribs are arranged on the inner walls of the first main supporting leg, the second main supporting leg, the third main supporting leg and the fourth main supporting leg along the length direction; and reinforcing ribs are arranged on the outer walls of the first auxiliary supporting leg, the second auxiliary supporting leg, the third auxiliary supporting leg and the fourth auxiliary supporting leg along the length direction.
9. The telescopic herringbone ladder of claim 1, wherein: the first main supporting leg, the second main supporting leg, the third main supporting leg, the fourth main supporting leg, the first auxiliary supporting leg, the second auxiliary supporting leg, the third auxiliary supporting leg and the fourth auxiliary supporting leg are made of aluminum alloy.
10. The telescopic herringbone ladder of claim 1, wherein: the lengths of the first main supporting leg, the second main supporting leg, the third main supporting leg, the fourth main supporting leg, the first auxiliary supporting leg, the second auxiliary supporting leg, the third auxiliary supporting leg and the fourth auxiliary supporting leg are 0.6-1.0 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822103925.5U CN209838256U (en) | 2018-12-14 | 2018-12-14 | Telescopic double ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822103925.5U CN209838256U (en) | 2018-12-14 | 2018-12-14 | Telescopic double ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209838256U true CN209838256U (en) | 2019-12-24 |
Family
ID=68896524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822103925.5U Expired - Fee Related CN209838256U (en) | 2018-12-14 | 2018-12-14 | Telescopic double ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209838256U (en) |
-
2018
- 2018-12-14 CN CN201822103925.5U patent/CN209838256U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191224 Termination date: 20211214 |