CN215854991U

CN215854991U - Lifting type platform ladder

Info

Publication number: CN215854991U
Application number: CN202122025551.1U
Authority: CN
Inventors: 蔡彬彬; 刘双; 熊裕平
Original assignee: Shanghai Ruiju Metal Products Co ltd
Current assignee: Shanghai Ruiju Metal Products Co ltd
Priority date: 2021-08-26
Filing date: 2021-08-26
Publication date: 2022-02-18
Anticipated expiration: 2031-08-26

Abstract

The utility model provides a lifting platform ladder, which comprises a base and a lifting platform, wherein a lifting component is fixedly arranged between the base and the lifting platform, which comprises a driving part, two telescopic parts and a connecting rod, wherein the two telescopic parts are respectively and fixedly arranged at the two sides of the base, a driving part is fixedly arranged between the two telescopic parts, the driving part is fixedly arranged on the base, a rotating shaft of the driving part is in transmission connection with the extensible part to drive the extensible part to extend or contract along the length direction of the substrate, one end of the connecting rod is rotatably connected with the lifting platform, the other end of the connecting rod is rotatably connected with the telescopic piece, the utility model has the advantages of simple structure, convenience for the air operation personnel to stand and capability of being independently operated by one person.

Description

Lifting type platform ladder

Technical Field

The utility model relates to the technical field of ladders, in particular to a lifting type platform ladder.

Background

The ladder is an old and young tool, which is said to be old because: the use of the building can trace back to the age of human settlement and begin to build a house; it is said to be young because: in modern times today, various "height" challenges are encountered and are also being used in large numbers to solve problems. The appearance and the function of the tools in the world are not changed greatly for thousands of years, and the ladder is not eliminated all the time despite the progress of technology, and is the first place among the tools! It contributes significantly to humans! The ladder can extend the height of a human being. In life, various works and constructions, a large number of ladders are used, and for some aerial trimming workers, the existing ladders cannot well enable the trimming workers to operate with both hands in the using process, so that the whole aerial trimming work is extremely difficult.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a lifting type platform ladder which has the advantages of simple structure, convenience for the aerial operation personnel to stand and capability of being independently operated by one person.

The above object of the present invention is achieved by the following technical solutions: the utility model provides an over-and-under type platform ladder, includes base, elevating platform, the base with fixed lifting unit that is provided with between the elevating platform, it includes driving piece, extensible member, connecting rod, the quantity of extensible member is two, and respectively fixed set up in the both sides of base, two fixed driving medium that is provided with between the extensible member for the transmission of power, the driving piece is fixed set up in on the base, just the pivot of driving piece with the extensible member transmission is connected, drives the extensible member stretches out or contracts along base plate length direction, the one end and the elevating platform of connecting rod rotate to be connected, the other end with the extensible member rotates to be connected, the elevating platform with fixed guide structure that is provided with between the base.

Preferably, the extensible member includes gear, first rack, second rack, wherein, base both ends surface indent forms to be used for the installation cavity of gear, the gear set up in the installation cavity, and with the base rotates to be connected, first rack and second rack set up respectively in the both sides of gear, just the base with indent forms to have the sliding tray on first rack, the second rack relevant position.

Preferably, the transmission mode of the transmission part is any one of belt transmission, gear transmission, chain transmission and worm transmission.

Preferably, the guide structure comprises a plurality of guide rods which are sleeved, one end of each guide rod is fixedly connected with the base, the other end of each guide rod is fixedly connected with the lifting platform, the guide rods limit the rotation between the lifting platform and the base, and the guide rods can stretch along the length of the guide rods.

Preferably, the bottom of the base is fixedly provided with a rolling body.

Preferably, guard rails are fixedly arranged at the top of the lifting platform, and one of the guard rails is movably mounted on the lifting platform.

In summary, the utility model includes at least one of the following beneficial technical effects:

1. in this embodiment, through set up lifting unit between elevating platform and base, make the elevating platform can provide platform and space for aerial operation personnel at the ascending in-process, the aerial operation personnel of being convenient for can carry out the bimanualness, reduce the operation degree of difficulty, improve work efficiency, can realize one and operate.

2. In this embodiment, can rotate through the control motor as required, drive the elevating platform and go up and down to the height that needs, realize controlling the lift of whole device alone, and this device can be good at the operation stability, adopts the four corners to support simultaneously, the condition of slope can not appear.

Drawings

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

FIG. 2 is a schematic structural view showing a relationship between the elevating assembly and the elevating platform according to the present invention;

fig. 3 is a sectional view showing a cover plate in the present invention.

Reference numerals: 1. a base; 2. a lifting platform; 3. a lifting assembly; 31. a drive member; 32. a telescoping member; 321. a gear; 322. a first rack; 323. a second rack; 33. a connecting rod; 4. a mounting cavity; 5. a sliding groove; 6. a transmission member; 7. a cover plate; 71. a rotating groove; 8. a guide structure; 9. a rolling body; 10. a guard rail.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this application do not denote a limitation of quantity, but rather denote the presence of at least one.

In the description of the present specification and claims, the terms "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 to 3 show a specific embodiment of the lifting platform ladder of the present invention, which includes a base 1 and a lifting platform 2, wherein a lifting assembly 3 is fixedly disposed between the base 1 and the lifting platform 2, and the lifting platform 2 is lifted or lowered by the lifting assembly 3, wherein in this embodiment, the lifting assembly 3 includes a driving member 31, two telescopic members 32, and a connecting rod 33, the number of the telescopic members 32 is two, and the two telescopic members 32 are respectively and fixedly disposed on two sides of the base 1, so that the structure is more stable in the process of driving the lifting platform 2 to lift or lower the whole lifting assembly 3, therefore, the two telescopic members 32 are symmetrically disposed on two sides of the base 1, and the forces applied to the lifting platform 2 by the telescopic members 32 in the moving process are the same.

In this embodiment, the extensible member 32 includes a gear 321, a first rack 322, and a second rack 323, a mounting cavity 4 for mounting the gear 321 is formed in the surface of each end of the base 1, the gear 321 is disposed in the mounting cavity 4 and is rotatably connected to the base 1 by a rotating shaft, the first rack 322 and the second rack 323 are respectively disposed on two sides of the gear 321, a sliding slot 5 is formed in the corresponding position of the base 1, the first rack 322 and the second rack 323, and the first rack 322 and the second rack 323 are mounted in the sliding slot 5 and are rotated by the gear 321 to synchronously extend or retract the first rack 322 and the second rack 323.

In this embodiment, the transmission member 6 is fixedly disposed between the two extensible members 32 and used for power transmission, wherein the transmission mode of the transmission member 6 is any one of belt transmission, gear transmission, chain transmission and worm transmission, in this embodiment, the transmission member 6 adopts the belt transmission mode to transmit power, the gear 321 in the extensible member 32 adopts the two-section gear 321, the meshing teeth at the bottom layer are meshed with the rack, and the meshing teeth at the top portion are meshed with the rack, so that the rack is in transmission connection with the two extensible members 32, and in this embodiment, the initial extending amount of the rack in the two extensible members 32 is consistent, so that the magnitude and the direction of the force applied to the lifting platform 2 during subsequent extending and retracting are consistent, and the influence on the overall structural stability is avoided.

In this embodiment, the fixed apron 7 that is provided with in one side that is located the toothed chain of base 1, the bottom surface of apron 7 is formed with the rotation groove 71 that supplies the toothed chain motion, wherein, adopts the bolt fastening mode to carry out fixed connection between base 1 and the apron 7, and simple structure is convenient for the later stage and is maintained.

Of course, the base 1 and the cover plate 7 can be fixed by arranging a hasp, and at least the above functions can be realized.

The driving member 31 is fixedly disposed on the cover plate 7, and the rotating shaft of the driving member 31 is in transmission connection with the telescopic member 32, specifically, in this embodiment, the driving member 31 employs a motor, so that the rotating shaft of the motor penetrates through the surface of the cover plate 7 and is fixedly connected with the rotating shaft, and the gear 321 is driven by the motor to rotate forward and backward, thereby extending and retracting the rack.

In this embodiment, the number of the connecting rods 33 is four, and the connecting rods are respectively arranged on four vertexes of the lifting platform 2, one end of each connecting rod 33 is hinged to the bottom of the lifting platform 2, and the other end of each connecting rod 33 is hinged to one end of the rack extending out of the rack, so that the rack is stretched and retracted, the connecting rods 33 are driven to move, and the lifting platform 2 is promoted to ascend or descend.

In this embodiment, fixed guide structure 8 that is provided with between elevating platform 2 and the base 1, it is concrete, guide structure 8 includes the guide bar that the multisection cover was established, the one end and the 1 fixed connection of base of guide bar, the other end and elevating platform 2 fixed connection, in this embodiment, the cross section of guide bar adopts the rectangle setting, thereby realized that the guide bar is injectd and is rotated between elevating platform 2 and the base 1, the guide bar that the cover was established is under the promotion of connecting rod 33, can be through sliding each other, it is flexible to follow elevating platform 2, guide structure 8 not only can make elevating platform 2 and base 1 not take place relative rotation, can also avoid the invariant of horizontal plane position between elevating platform 2 and the base 1, thereby the rising and the decline of elevating platform 2 have been guaranteed.

In this embodiment, the fixed rolling element 9 that is provided with in bottom of base 1, the quantity of rolling element 9 are four, and respectively fixed the setting in four apex angle departments of base 1, and in this embodiment, rolling element 9 adopts the universal wheel that has locking function, moves the platform ladder through the universal wheel, and when reacing the settlement position, the accessible makes the lock of universal wheel dead, avoids aerial operating personnel when standing to elevating platform 2, and the universal wheel slides, causes the occurence of failure that personnel dropped very easily.

In addition, guard rails 10 are fixedly arranged on the top of the lifting platform 2, one guard rail 10 is movably mounted on the lifting platform 2, the guard rail 10 is arranged on the top of the lifting platform 2, so that the air worker can be further protected, and the air worker can be prevented from falling off accidentally, and in the embodiment, one guard rail 10 is movably connected with the lifting platform 2, so that the air worker can conveniently stand on the lifting platform 2.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides an over-and-under type platform ladder, includes base, elevating platform, a serial communication port, the base with fixed lifting unit that is provided with between the elevating platform, it includes driving piece, extensible member, connecting rod, the quantity of extensible member is two, and respectively fixed set up in the both sides of base, two fixed driving medium that is provided with between the extensible member for the transmission of power, the driving piece is fixed set up in on the base, just the pivot of driving piece with the extensible member transmission is connected, drives extensible member stretches out or the shrink along base plate length direction, the one end and the elevating platform of connecting rod rotate to be connected, the other end with the extensible member rotates to be connected, the elevating platform with fixed guide structure that is provided with between the base.

2. The lifting platform ladder according to claim 1, wherein the extension member comprises a gear, a first rack and a second rack, wherein a mounting cavity for mounting the gear is formed in the surface of each end of the base, the gear is disposed in the mounting cavity and is rotatably connected to the base, the first rack and the second rack are respectively disposed on both sides of the gear, and a sliding slot is formed in the base corresponding to the first rack and the second rack.

3. The elevating platform ladder as claimed in any one of claims 1-2, wherein the transmission means is any one of belt transmission, gear transmission, chain transmission and worm transmission.

4. The elevating platform ladder as claimed in claim 1, wherein the guide structure comprises a plurality of guide rods fixedly connected at one end to the base and at the other end to the elevating platform, the guide rods limiting rotation between the elevating platform and the base, the guide rods being extendable and retractable along their length.

5. The elevating platform ladder as claimed in claim 1, wherein the base is fixedly provided at a bottom thereof with rolling bodies.

6. The elevating platform ladder as claimed in claim 1, wherein guard rails are fixedly installed on the top of the elevating platform, and one of the guard rails is movably installed on the elevating platform.