CN210317130U

CN210317130U - Movable telescopic ladder

Info

Publication number: CN210317130U
Application number: CN201920238791.XU
Authority: CN
Inventors: 李成; 陈国瑜; 梁陆叶; 张宇; 熊美俊; 崔路飞
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2019-02-26
Filing date: 2019-02-26
Publication date: 2020-04-14
Anticipated expiration: 2029-02-26

Abstract

The utility model provides a portable telescopic ladder, including first ladder leg, second ladder leg, third ladder leg, fourth ladder leg, trample the unit, the screw rod, remove the wheel, it is dull and stereotyped to carry the thing, rotate the flat board, the seat, first motor, the second motor, four ladder legs have the internal thread hole, the screw rod passes through threaded connection with ladder leg upper and lower part internal thread hole, the lower extreme of screw rod passes through the shaft coupling and is connected with the second motor, it has the lift structure to rotate dull and stereotyped one end, it connects first stabilizer blade and second stabilizer blade to rotate dull and stereotyped bottom through the revolute pair, first motor is connected with vertical reducing gear box, vertical reducing gear box is connected with the rotatory cylinder transmission, the bottom surface of seat is provided with the hinge support, and four ladder leg upper ends are connected with the support through the revolute pair. The beneficial effects of the utility model are that can realize the lateral shifting and the flexible function of ladder to can transport the material from top to bottom, and can adapt to complicated operating modes such as slope ground, slope, use manpower sparingly, and detachability is good, simple structure, and the practicality is strong.

Description

Movable telescopic ladder

Technical Field

The utility model relates to a ladder, concretely relates to portable flexible ladder.

Background

The ladder is widely applied to the fields of families, building construction, industry and the like as a climbing tool, is mainly used for facilitating manual high-altitude operation, and has the following problems in the prior ladder: firstly, the height of the ladder is fixed, and construction working conditions of various heights cannot be realized; secondly, the self-moving can not be realized, when the work of a certain area is finished, the ladder needs to be manually moved to the area to be constructed, such as wall painting and the like, time and labor are wasted, the labor amount of workers is increased, and the production efficiency is reduced; thirdly, during construction, materials need to be carried up and down manually, and the labor intensity of workers is greatly increased; and fourthly, the steel wire rope is easy to slip on an inclined ground and an inclined slope, and the working capability is poor.

Disclosure of Invention

In view of the problem that above-mentioned ladder exists, it is necessary to provide a portable telescopic ladder, this ladder rotates about through rotating the flat board at every turn, under the condition that the worker need not the lower ladder, rely on the reaction force of stabilizer blade to realize the lateral shifting of ladder, the utility model discloses a portable telescopic ladder is provided with hoisting device, realize the upper and lower transportation function of material, very big unnecessary manpower of saving, and through the inside screw drive who sets up of ladder leg, realize the flexible of ladder leg, thereby the range of height that the ladder can work has been enlarged, and the ladder leg motor with one side rotates in step, realize the flexible length difference of ladder leg of both sides, adaptable slope ground, complicated operating mode such as slope, and this ladder has set up the reliability of stopping the very big assurance ladder of device of stopping, moreover, the steam generator is simple in structure, detachability is good, degree of automation is high, therefore.

In order to achieve the purpose, the utility model discloses the technical scheme who takes is:

a movable telescopic ladder comprises a first ladder leg, a second ladder leg, a treading unit, a screw rod, a moving wheel, a carrying flat plate, a rotating flat plate, a seat, a hand push rod, a first motor, a second motor, a first connecting plate and a second connecting plate, and is characterized in that the first ladder leg is connected with a third ladder leg through the first connecting plate, the second ladder leg is connected with a fourth ladder leg through the second connecting plate, the first ladder leg, the second ladder leg, the third ladder leg and the fourth ladder leg are divided into an upper part and a lower part, the upper part and the lower part are provided with inner threaded holes, the screw rod is in threaded connection with the upper inner threaded hole and the lower inner threaded hole of the ladder leg, the lower end of the screw rod is connected with the second motor through a coupler, the second motor is fixed in the ladder legs, the four ladder legs are of a symmetrical structure and have the same screw rod connection mode and transmission mode, one end of the rotating flat plate is connected with the carrying flat plate, the other end supports on trampling the unit, the revolute pair has the detachability, and fixes with the pin during operation, the other end of rotating the flat board is provided with lifts the structure, rotate dull and stereotyped bottom and pass through revolute pair and connect first stabilizer blade and second stabilizer blade, first motor passes through bolted connection on the motor cabinet, and the motor cabinet welding is on carrying the dull and stereotyped, first motor is connected with vertical reducing gear box, vertical reducing gear box is connected with the rotary drum transmission, there is the safety cover vertical reducing gear box and first motor outside, with vertical reducing gear box fixes on carrying the dull and stereotyped, the bottom surface four corners of seat is provided with the ear seat, and is connected with the ear seat through the revolute pair on four terraced legs.

As the utility model discloses an optimized technique, be connected with between first ladder leg and the second ladder leg and trample the unit, the connected mode is for trampling unit both ends and the inboard rigid connection of ladder leg, trample the unit and arranged a plurality ofly from top-down between two ladder legs, it is hollow rectangle steel construction to trample the unit.

As a preferred technique of the utility model, four terraced leg lower extremes are connected with the removal wheel, the connected mode is for connecting through the both sides connecting block, connecting block upper portion and terraced leg surface rigid connection, the lower part is through revolute pair and the hub connection that removes the wheel, and removes the wheel and be connected for the interference with the axle.

As a preferred technique of the utility model, the start-up and the closing of the inside second motor of first ladder leg, second ladder leg have the synchronism, and are controlled by switch I, the start-up and the closing of the inside second motor of third ladder leg, fourth ladder leg have the synchronism, and are controlled by switch II.

As a preferred technique of the utility model, rotate dull and stereotyped bottom and pass through revolute pair and connect first stabilizer blade and second stabilizer blade, the connected mode is the hole of the hinged-support through under the base and the hub connection of stabilizer blade upper end, and is releasable connection, and the during operation is fixed with the pin, the length of stabilizer blade can reach and carry out the plane contact with ground, the stabilizer blade bottom scribbles the wear-resisting rubber material.

As a preferred technique of the utility model, the seat is saddle-shaped, and the two sides are curved surface structures.

As the utility model discloses an optimal technique, the removal wheel that is connected with third ladder leg, fourth ladder leg all stops the device of stopping, it has friction ring, handspike and horizontal pole to constitute to stop the device of stopping, the friction ring is the quarter ring structure, and has the through-hole in the middle of to support in the top of removing the wheel through the fixed axle, the fixed axle supports in the both sides connecting block, friction ring working surface scribbles wear-resisting rubber material, friction ring both sides clearing hole is connected with the axle of removing the wheel with the revolute pair, the horizontal pole links to each other with the handspike rigidity at the overhanging end of friction ring of third ladder leg, fourth ladder leg.

As the utility model discloses a preferred technique, carry dull and stereotyped one end of thing and pass through fixed plate and seat connection, connected mode is rigid connection, carry the dull and stereotyped other end of thing and support on trampling the unit, it has stop device to carry a dull and stereotyped side, stop device and carry dull and stereotyped rigid connection of thing, stop device is second grade extending structure, comprises fixed hole and the telescopic shaft of accomodating, stop device is second grade extending structure, stop device is spacing with the handspike cooperation.

As an optimized technique of the utility model, the ear seat connecting mode of the four ladder legs one ends through the revolute pair and the seat is a detachable revolute pair connection formed by the shaft of the ladder leg and the hole of the ear seat, and the connection is fixed through the pin.

As a preferred technique of the utility model, first connecting plate, second connecting plate one end are passed through the revolute pair and are connected with third ladder leg, fourth ladder leg respectively, and the other end distributes a plurality of connecting holes to form releasable connection through bolt and first ladder leg, second ladder leg.

Drawings

FIG. 1 is a general schematic view of the present invention;

FIG. 2 is a schematic view of another perspective of the present invention;

fig. 3 is a schematic view of the internal structure of the first ladder leg of the present invention;

fig. 4 is an overall side view of the present invention;

fig. 5 is a schematic view of the friction ring and the movable wheel of the present invention.

In the figure: 1. a first ladder leg; 2. a second ladder leg; 3. a stepping unit; 4. a screw; 5. a first leg; 6. a second leg; 7. connecting blocks; 8. a moving wheel; 9. rotating the flat plate; 10. a fixing plate; 11. a seat; 12. Carrying flat plate; 13. a third ladder leg; 14. a fourth ladder leg; 15. a vertical reduction gearbox; 16. rotating the drum; 17. A friction ring; 18. a cross bar; 19. a handspike; 20. a first connecting plate; 21. a second connecting plate; 22. a first motor; 23. a limiting device; 24. a hinged support; 25. a second motor; 26. a coupling; 27. and fixing the shaft.

Detailed Description

The following description of the present invention is provided to explain the working principle of the present invention, with reference to the accompanying drawings.

As shown in fig. 1, 2, 3, 4 and 5, a mobile extension ladder comprises a first ladder leg 1, a second ladder leg 2, a tread unit 3, a screw rod 4, a moving wheel 8, a carrier plate 12, a rotating plate 9, a seat 11, a hand push rod 19, a first motor 22, a second motor 28, a first connecting plate 20 and a second connecting plate 21, wherein the first ladder leg 1 is connected with a third ladder leg 13 through the first connecting plate 20, the second ladder leg 2 is connected with a fourth ladder leg 14 through the second connecting plate 21, the first ladder leg, the second ladder leg, the third ladder leg and the fourth ladder leg are divided into an upper part and a lower part, the upper part and the lower part are provided with inner threaded holes, the screw rod 4 is in threaded connection with the upper part and the lower part of the ladder leg, the lower end of the screw rod 4 is connected with a second motor 25 through a coupling 26, the second motor 25 is fixed inside the ladder leg, the four ladder legs are of a symmetrical structure and have the same screw rod connection mode and transmission mode, one end of a rotating flat plate 9 is connected with an object carrying flat plate 12 through a revolute pair, the other end of the rotating flat plate is supported on a stepping unit 3, the revolute pair is detachable and fixed by pins during working, a lifting structure is arranged at the other end of the rotating flat plate 9, the bottom of the rotating flat plate 9 is connected with a first supporting leg 5 and a second supporting leg 6 through a hinged support 24 through the revolute pair, a first motor 22 is connected on a motor base through bolts and welded on the object carrying flat plate 12, the first motor 22 is connected with a vertical reduction gearbox 15, the vertical reduction gearbox 15 is in transmission connection with a rotary drum 16, protective covers are arranged outside the vertical reduction gearbox 15 and the first motor 22, the vertical reduction gearbox 15 is fixed on the object carrying flat plate 12, and ear seats are arranged at four corners of the bottom surface of the, and the upper ends of the four ladder legs are connected with the ear seats through revolute pairs.

As the utility model discloses an optimized technique, be connected with between first ladder leg 1 and the second ladder leg 2 and trample unit 3, the connected mode is for trampling 3 both ends and the inboard rigid connection of ladder leg, trample unit 3 and arranged a plurality ofly from top-down between two ladder legs, it is hollow rectangle steel construction to trample unit 3.

As the utility model discloses a preferred technique, four terraced leg lower extremes are connected with and remove wheel 8, the connected mode is for connecting through the both sides connecting block, connecting block upper portion and terraced leg surface rigidity are connected, and the lower part is through revolute pair and the hub connection that removes wheel 8.

As a preferred technique of the present invention, the start and the close of the second motor 25 inside the first ladder leg 1 and the second ladder leg 2 are synchronized and controlled by the switch i, and the start and the close of the second motor 25 inside the third ladder leg 13 and the fourth ladder leg 14 are synchronized and controlled by the switch ii.

As a preferred technique of the utility model, the first stabilizer blade 5 of revolute pair connection and second stabilizer blade 6 are passed through to the bottom of rotating flat plate 9, the connected mode is the hole through hinged-support 24 under the base and the hub connection of stabilizer blade upper end, and is releasable connection, and the during operation is fixed with the pin, the length of stabilizer blade can reach and carry out plane contact with ground, the stabilizer blade bottom scribbles wearability rubber materials.

As a preferred technique of the utility model, the seat 11 is saddle-shaped, and the two sides are curved surface structures.

As an optimized technique of the utility model, the removal wheel 8 that is connected with third ladder leg 13, fourth ladder leg 14 all has the device of stopping to stop, it has friction ring 17, horizontal pole 18 and handspike 19 to constitute to stop the device, friction ring 17 is the quarter ring structure, and has the through-hole in the middle of to support in the top of removing the wheel through fixed axle 27, fixed axle 27 supports in both sides connecting block 7, friction ring 17 working surface scribbles rubber wear-resistant material, horizontal pole 18 and third ladder leg 13, the overhanging end rigid connection of friction ring of fourth ladder leg 14 to link to each other with handspike 19 rigidity in one end.

As an optimized technology of the utility model, carry dull and stereotyped 12 one end of thing and pass through fixed plate 10 and be connected with seat 11, connected mode is rigid connection, carry the dull and stereotyped 12 other end of thing and support on trampling unit 3, there is stop device 23 on carrying a side of dull and stereotyped 12, stop device 23 and carrying dull and stereotyped 12 rigid connection, stop device is second grade extending structure, comprises fixed hole and the telescopic shaft of accomodating, stop device 23 is spacing with the 19 cooperation of handspike.

As a preferred technique of the utility model, the ear seat connecting mode of four ladder leg one ends through revolute pair and seat 11 is the removable revolute pair connection of the hole formation of axle and ear seat through the ladder leg to fix through the pin.

As a preferred technique of the present invention, the first connecting plate 20 and the second connecting plate 21 are connected to the third ladder leg 13 and the fourth ladder leg 14 through revolute pairs, and the other ends of the third connecting plate and the fourth connecting plate are distributed with a plurality of connecting holes, and are detachably connected to the first ladder leg 1 and the second ladder leg 2 through bolts.

When the device is used specifically, a user sits on a seat, two legs are arranged on two sides of a saddle surface, when the device needs to be moved, the brake stopping device is in a non-working state, one leg is inserted into the lifting device of the rotating flat plate, the rotating flat plate is driven to rotate upwards, the first support leg and the second support leg below the rotating flat plate can rotate downwards due to the gravity center, when the rotating flat plate rotates downwards to restore the original state, the first support leg and the second support leg can generate acting force with the ground, the ladder is under the action of reaction force, transverse movement is carried out by the aid of the moving wheels, when the working position is moved, the hand push rod is pushed, the friction ring is in surface contact with the wheels, the hand push rod is matched with the limiting device with the secondary expansion and contraction, the motion of the hand push. When the flexible function of needs, stop the device of stopping and be in operating condition, first connecting plate is dismantled through the releasable connection of bolt with the second connecting plate, the inside second motor of four ladder legs starts, it makes rotary motion to drive the screw rod through the shaft coupling, because of the motor is fixed inside ladder leg, the rotation of dead axle is made to the screw rod, drive first one of ladder leg and make rectilinear motion, thereby reach flexible function, after flexible the completion, select suitable bolted connection hole on first connecting plate and the second connecting plate, fixed connection carries out again. When the inclined ground and the slope work, the motors on the two sides rotate independently, and the telescopic height of one side can be independently adjusted, so that the inclination angle of the ladder can be adjusted, and a proper working state can be achieved. When the materials are transported up and down, the first motor is started, the rotating roller is driven to rotate through the speed reduction and distance increasing effects of the reduction gearbox, and the goods are lifted up through the rope.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single technical solution, and such description is for clarity only, and those skilled in the art should understand that, when the present description is taken as a whole, the technical solutions in the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.

Claims

1. A movable telescopic ladder comprises a first ladder leg (1), a second ladder leg (2), a treading unit (3), a screw rod (4), a moving wheel (8), a loading flat plate (12), a rotating flat plate (9), a seat (11), a hand push rod (19), a first connecting plate (20), a second connecting plate (21), a first motor (22) and a second motor (25), and is characterized in that the first ladder leg (1) is connected with a third ladder leg (13) through the first connecting plate (20), the second ladder leg (2) is connected with a fourth ladder leg (14) through the second connecting plate (21), the first ladder leg (1), the second ladder leg (2), the third ladder leg (13) and the fourth ladder leg (14) are divided into an upper part and a lower part, the upper part and the lower part are provided with internal thread holes, the screw rod (4) is in threaded connection with the upper part and the lower part of the ladder leg, the lower end of the screw rod (4) is connected with the second motor (25) through a coupler (26), the second motor (25) is fixed inside the ladder legs, the four ladder legs are of a symmetrical structure and have the same screw rod connection mode and transmission mode, one end of the rotating flat plate (9) is connected with the object carrying flat plate (12) through a revolute pair, the other end of the rotating flat plate is supported on the stepping unit (3), the revolute pair is detachable and fixed by pins during working, the other end of the rotating flat plate (9) is provided with a lifting structure, the bottom of the rotating flat plate (9) is connected with the first support leg (5) and the second support leg (6) through the revolute pair, the first motor (22) is connected onto a motor base through bolts, the motor base is welded on the object carrying flat plate (12), the first motor (22) is connected with the vertical reduction gearbox (15), the vertical reduction gearbox (15) is in transmission connection with the rotary drum (16), and protective covers are arranged outside the vertical reduction gearbox (15) and the first motor (22), the vertical reduction box (15) is fixed on the object carrying flat plate (12), ear seats are arranged at four corners of the bottom surface of the seat (11), and the upper ends of the four ladder legs are connected with the ear seats through revolute pairs.

2. The mobile telescopic ladder according to claim 1, wherein a treading unit (3) is connected between the first ladder leg (1) and the second ladder leg (2) in a manner that two ends of the treading unit (3) are rigidly connected with the inner sides of the ladder legs, a plurality of treading units (3) are arranged between the two ladder legs from top to bottom, and the treading unit (3) is of a hollow rectangular steel structure.

3. A mobile extension ladder as claimed in claim 1, wherein the lower ends of the four ladder legs are connected with moving wheels (8) through connecting blocks (7) at two sides, the upper parts of the connecting blocks (7) are rigidly connected with the surfaces of the ladder legs, the lower parts of the connecting blocks are connected with the shafts of the moving wheels (8) through revolute pairs, and the moving wheels (8) are in interference connection with the shafts.

4. A mobile telescopic ladder according to claim 1, characterized in that the activation and deactivation of the second motor (25) inside the first (1) and second (2) ladder legs is synchronized and controlled by switch i, and the activation and deactivation of the second motor (25) inside the third (13) and fourth (14) ladder legs is synchronized and controlled by switch ii.

5. A mobile extension ladder as claimed in claim 1, characterized in that the bottom of the pivotal plate (9) is connected to the first (5) and second (6) legs by means of a revolute pair, said connection being made by means of an axle connected to the upper end of the legs through holes in hinged supports (24) under the base, and being releasable, and fixed in operation by means of pins, said first (5) and second (6) legs being of such a length as to come into planar contact with the ground, and the bottom being coated with a wear-resistant rubber material.

6. A mobile extension ladder according to claim 1, characterized in that the seat (11) is saddle-shaped with curved surfaces on both sides.

7. The mobile extension ladder as claimed in claim 1, wherein the moving wheels (8) connected with the third ladder leg (13) and the fourth ladder leg (14) are provided with a brake device, the brake device is composed of a friction ring (17), a cross bar (18) and a hand push rod (19), the friction ring (17) is of a quarter-circle structure, is provided with a through hole in the middle and is supported above the moving wheels through a fixed shaft (27), the fixed shaft (27) is supported in the connecting blocks (7) at two sides, the working surface of the friction ring (17) is coated with rubber wear-resistant material, and the cross bar (18) is rigidly connected with the outward extending ends of the friction rings of the third ladder leg (13) and the fourth ladder leg (14) and is rigidly connected with the hand push rod (19) at one end.

8. The mobile telescopic ladder according to claim 1, wherein one end of the carrier plate (12) is connected with the seat (11) through a fixing plate (10), the connection mode is rigid connection, the other end of the carrier plate (12) is supported on the stepping unit (3), a limiting device (23) is arranged on one side surface of the carrier plate (12), the limiting device (23) is rigidly connected with the carrier plate (12), the limiting device is of a secondary telescopic structure and consists of a fixed accommodating hole and a telescopic shaft, and the limiting device (23) is matched with a hand push rod (19) for limiting.

9. A mobile extension ladder as claimed in claim 1, characterised in that the four legs are connected at one end to the ear seats of the seat (11) by means of revolute pairs, which are detachably connected by means of holes formed in the shaft of the legs and in the ear seats and fixed by means of pins.

10. A mobile extension ladder as claimed in claim 1, wherein the first connecting plate (20) and the second connecting plate (21) are connected to the third ladder leg (13) and the fourth ladder leg (14) at one end by a revolute pair, and are detachably connected to the first ladder leg (1) and the second ladder leg (2) at the other end by a plurality of connecting holes.